Wednesday, October 30, 2019

Leading Public Relations Efforts Essay Example | Topics and Well Written Essays - 250 words

Leading Public Relations Efforts - Essay Example What made him influential among the masses was his understanding the need of the people and working accordingly, in the interests of the civil rights of the citizens. 2) The latest trends in marketing have been connecting with the customers emotionally so that they persuade the people to purchase the goods they are attached to. With this strategy, Kevin Roberts, CEO of Saatchi and Saatchi Advertising says "The brands that can move to that emotional level, that can create loyalty beyond reason, are going to be the brands where premium profits lie." Thus, clarifying that the premier goal of making profits can be achieved after establishing an emotional connection between the brands and the customers. 3) In both the above examples, the leaders left an impact of influence among the masses. The difference is that one persuaded the people towards their own interests, by making them understand their civil rights, and the other persuaded people as a marketing strategy towards more profit-making in their business. The times have also been different in both the cases, but talking of persuading the masses, both have had an iconic influence on the people. Both of them have been strategic leaders, by understanding the emotional levels of humans, they managed to gain their

Monday, October 28, 2019

Musical Impact Essay Example for Free

Musical Impact Essay In society today, music is shown to have an impact on ways of life. People within the society are raised with it in some way. Music is always present in society. It is natural then, to wonder about the origin of music. Music is a special type of sound and noises mixed in together. People create the meanings of these sounds and noises to create their own opinions and emotions of expressing themselves. Many people believed that music is created in the mind for this same reason. That we have the sounds and noises that are heard are within our own human being and along that, it can come once we are born with it. Although, this may not be true, due to the differences in today’s society, there are many aspects that can have a control of the musical taste of a person. Ones musical interests are not based on biology, rather the individual’s environment: community, culture, religion, and geography. First of all a community can effect an individual interest in music. The definition of a community is having the same beliefs, resources, needs and risks. When people tend to share and have the same interest they tend to also have the same interest in music. The term â€Å"community music† finds no more resonating tone than within minority groups working toward social acceptance and assimilation (Hayes 6). As shown in the International Journal we can see people tend to stick together in order to have the same identity and be accepted in the group. Also sharing the same risks and resources will help them have communication within each other, making it be easier on them to be able to relate. An example of this would be people in community, such as in Honduras, they have a lot of different beliefs. For example, in the burials, the community gathers around in order to their last goodbye to the deceased. Then they called upon a band, which in their thoughts mean that they celebrate the life of the deceased. They each sing and walk with the burial service and take them around. This event mentioned, to some may be disrespectful, but to Hondurans is a way to communicate with the dead. It shows that they respect him or her and show him or her that they are celebrating the life they had. Having communication in music brings to a community a better aspect to people and it is also very important for them. Yes, they can be sounds and noises to some, but many do not think that way. Like the people in Honduras, their beliefs are very important and they demonstrate them through music. Therefore, a community could determine a person’s interest in music because a community makes an individual do the same thing as other people. Another example would be, if a person listens to rock and they see that other people listen to it too, than they will would go ahead and hear it to. Secondly, culture is also another factor that influences music preferences on individuals. The culture of someone can affect the way of music choices. The two factors that generate culture will be academic knowledge and manners taught to each person (Yudkin 27). Each culture then possesses on its own musical language. This musical language reflects its own traditions, concerns, and activities; and in order to begin to understand the music of another culture, we need to understand something of the nature of its culture systems and the role the music plays in them (Yadkin 5). This is because many of the cultures have different academics and manners taught to them. An example is the culture would be of the Mandinka of Gambia in Senegal, they have a special musician leader, known as a jali. This leader is very important to the tribe due to that fact that he knows all the prayers and all the history of the tribe (Miller 44). As shown in this example each culture has its own special person and holds music as a special part of the community. The important part here is that a person needs to grow up somewhere. That place holds a significant knowledge making them a part of that culture group. With growing with them they hold a place within the culture. Music brings them all together making them communicate with each other easily and bring them normalcy. When this takes place the individual takes the musical knowledge and incorporates it into their system and beliefs. The beliefs that they incorporated can be seen in their academic areas. The literature, dance, and theater cannot go anywhere and do their expected ideas across without music. Music has to be in these areas in order to function well and be able to get the individuals culture across to the people. For example, dance cannot function without music. It gives the person the beats and the melody in order to create the feeling they want to get across to their audience (Miller 57). Dance also has different meanings in culture. A New Yorker can have a different rhythm than a person from China. This difference can be seen with the music they choose for their arts and their dance. It’s really difficult to be able to be prejudice to others cultures, because every culture is different. Music has that effect on society because it teaches the cultures and meanings of one’s society. The mixture of music to other society is also shown. Many of these arts can be seen throughout the world and from them people learn the differences in music. Music such as Jazz, Blues, and Gospels were produced when Europeans and Africans came together during the late nineteenth and twentieth century’s (Miller 61). Here we can see two cultures mixed in together and this is shown through their mix of their own music. Music can bring together worlds and is all due to its simplicity such as using their melodies and sounds. Music creates a new world for many people. The third factor that can affect the music choices of the individuals is the fact of one’s religion. Many religions do not allowed their followers to hear music from the outside world such hip-hop and rock. As said by Kong, â€Å"its nature is presented in a stylized and stereotypical fashion by the mass media the moral barricades are manned by bishops (Kong 104)†. An example of this is Christians and Catholics which have very different opinions regarding music. Christians is the larger group that includes Catholics. Christian women followers are not allowed to wear pants or the followers are not able to hear any type of music because in their regard they are preventing is a sin from them. While Catholic Church allowed their followers to wear their clothing with respect to God and be able to choose the type of music they listen to. As seen the music plays a big role due to the fact that Catholic churches make prayers into songs and sing them with their hearts, believing that God can be able to hear them (Miller kj187). While Christians cannot be able to do the same pray and sing to God due to the banned of music within their own. To many this is not unusual seeing the difference of worship. But once looked inside and see the music playing its role is different because it makes people think about what God thinks and which one he would prefer. If it is just music and prayers, then there is no music at all in its gatherings of worship. This is important because music can be seen playing a role in religions and making individuals having a different taste to the one with a Catholic follower. The religion of a person a can limit the person the knowledge of the evolution of the music outside their group. This can make it hard on them to relate to the others outside the society. The last and important factor that can make a difference in ones interest in music is the geography. Many people as seen can have different views and belief but geography make them have a different taste in music. We hear the melody, but we feel the beat. People in all cultures move their bodies to the rhythms of music, whether drumming, dancing, or rocking an infant (Silver and Trainer 2). This is important because a person in Los Angeles California will not have the same beats and rhythm as a person in London, Great Britain. Each part of the world is bound to have some type of music but the music differentiated in each part of the world. As mentioned in the seven themes of music geography â€Å"specific involvement with location of musical activities, such as the compositions and travels of their composers, rather than broader world distributions of regional delineations mentioned in Theme Two† (Nash and Carney 66). This means that even with culture and communities, music was first put into the field of geography due to the travels of the musicians and the spread of their ideas and tunes. This is important because it not only gives a way for questions to arise such the one that geography is the main factor as to the interest of music in humans. Due to the composers traveling, they spread around the ideas meaning that culture is affected and the belief is shaken with these ideas. The population of the countries is also a big factor because due to the fact that people are mixed together. People with different geography regions tend to have a different viewpoint of the world and music can be included in that. In conclusion this can be said, that these types of points can create music interest such one’s environment: community, culture, religion, and geography. This can be reasonable because people cannot be born with music interests. They are shaped by ones environment. People can have the same music interests if they shared the same belief and the same religion where they live. Music is very common in and around the world. Music is therefore a symbol to society because it represents the life and beliefs of people. Music can have a great impact on the life of people and this is important because this makes society. Music is evidently an important part of the lives of human beings. Music is reflected to our society we are in. The four aspects which are one’s community, culture, religion, and geography can determine each person’s interests in music rather than biological. Other factors can also relate to one’s musical preference, but the four aspects are the ones that are most common. Music is bound to be heard everywhere and without music the world would have hard times understanding things. Music is important to our world because it brings us together and also puts life and excitement. Music will always motivate people and will always be part of our lives. Without music, our society wouldn’t be the same including our feelings and impressions about it. Therefore, music brings happiness to our friends, and families, and all the people around the world.

Saturday, October 26, 2019

Poverty Vs. The Economy Essay -- Poor Poverty Economics Essays

Poverty vs. The Economy Poverty is a lack of goods and services necessary to maintain a minimal adequate standard of living. The definition of the term adequate varies, however, with the general standard of living in a society and with public attitudes toward deprivation. No university accepted definition of basic needs exists because poverty is a relative concept. In poorer countries it means living at the brink of subsistence, while in our country few improvised families confront starvation, although many suffer from undernourishment. A key issue in the area of poverty is inequality. Inequality has been a problem in all societies. No society distributes income evenly. Despite all the conceptual and technical problems of measurement, the government has devised a widely cited poverty index that reflects the different consumption requirements of families depending on their size and composition, on the sex and age of the family head, and on weather they live in rural or urban areas. Based on past surveys, the designers of the poverty index determined that families of three or more person spend approximately one-third of their income on food. Thus, the poverty level for these families was, therefore, set at three times the cost of the economy food plan. For smaller families and persons living alone, the cost of the economy food plan was multiplied by higher factors in order to compensate for the larger fixed expenses of smaller households. The poverty thresholds are updated every year to reflect changes in the consumer price index but overall rises in standard of living. (levington, page 147) Another issue is that the poverty index has several flaws. First, it does not allow for regional variations in the cost of living or for higher costs in the central city areas, where many of the poor are concentrated. Second, the flood costs for the budget were designed for temporary or emergence use and are thus inadequate for a perment diet because they provide only the barest subsistence. Finally, the government statistics fall to take into consideration nonmonetary benefits and assets in determining the number of poor. If these were counted, the numbers in the official poverty ranks would be reduced. The growing gap between the poverty level and median family income demonstrates the inaccuracy of adjusting a poverty level for price ... ...easy. Birth control and maternal care, designed to give children a better start in life, also leave the mother in a better position to become economically self sufficient or, at least, contribute to her own support. Similarly, the difference between cash subsides and rehabilitative programs is often blurred, for instance, stipends are necessary for the poor if they are to complete an effective training program. These various strategies for helping the poor complement each other. Not only must today's poverty be alleviated through cash and in-and aid, but steps must be taken to reduce it in the future by better preparing young people and by giving the poor a better chance in the job market. Bibliography Fitchen,Janet M.(1981). Poverty and Rural America New York,York: Random house Publishing Company. Jansson, Bruce S. (1988). The Reluctant Welfare State, A History of Amercians Social Welfare Policies. Belmont, California: Wadsworth Publishing Company. Katz, Michael B. (1990) The Undeserving Poor the War on Poverty to the war on Welfare, New York, New York. Levitan, Sar A. And Shapiro, Issac. (1987), Working But Poor. New York, New York: The free Press.

Thursday, October 24, 2019

Personality Traits of a Real Writer Essay

All writers are creative types, with cluttered desks, and messy piles, right? To be a good writer, one lives on coffee and stale potato chips only coming up for air when the book’s done, right? Maybe. Or maybe we as writers have convinced ourselves that this is how a â€Å"real† writer acts. Writers spend so much time trying to determine when they will be a â€Å"real† writer. Just like the stereotype that all accountants wear green eyeshades, the stereotypes about writers persist whether they are accurate or not. Writing is generally considered a creative â€Å"right-brain† activity. However, you don’t have to turn off the left-half of your brain to be a writer. The best writers learn the secrets of when to use their right-brain and when to use their left-brain. The most successful writers realize that writing is a business, and just like any other business, a certain amount of organization and timeliness is required. The best writers can read their mood. On creative days, they crank out the pages to their novel. On left-brain days, they send out invoices, clean out their files, and clean off their desks. MESSY VS. ORGANIZED Certain personality types crave â€Å"messes. † The clutter makes them feel comfortable. But it also eats away at their writing time since they spend it searching through piles of papers and old half-eaten sandwiches. The secret for the messy writer is to confine the messes to a â€Å"messy zone. † The messy zone is limited to one shelf in an office or the basket next to a reading chair. The mess is still there for the comfort factor, but it doesn’t take over. PROCRASTINATOR The procrastinating writer writes the book but never sends the manuscript. Their brilliant ideas pile up, but they never send a query. There’s always a better time†¦later. Unfortunately, the procrastinator never feels the joy of success. The procrastinator needs rewards, and lots of them. By planning wonderful rewards for simple acts, the procrastinator realizes the best time to write isn’t later. It’s right now. PERFECTIONIST The perfectionist writes the book but never finishes it. They are constantly revising, editing and reworking. This time eater takes away the fun of writing. Since nothing is ever good enough, what’s the point of writing anything? The perfectionist needs positive feedback and reinforcement. When they hear others say, â€Å"This is really good. You should submit it,† they can silence the inner critic that says, â€Å"You could make it sound better. † What is a real writer? It’s actually anyone who puts words to paper and sends them out into the world. And while anyone can sit down with a word processor, only real writers overcome the personality traits that could sidetrack them. Want to learn more? Visit http://www. organizedwriter. com? src=a103. Julie Hood is the author of â€Å"The Organized Writer: 30 Days to More Time, More Money and Less Frustration,† a new ebook with a roadmap for combining a writing career with the rest of your life. She manages the OrganizedWriter. com web site and writes Writer-Reminders, a weekly newsletter for writers. Newsletter subscribers receive a free ebook, The Sidetracked Writer’s Planner. When she isn’t writing, she sneaks in cleaning house around a busy household with two children, her husband, and two avid golfers. Copyright 2002 (c) Julie Hood, Finally Organized LLC. All Rights Reserved. Reprinted with permission.

Wednesday, October 23, 2019

Pay It Forward

Pay it Forward Jennifer Trager University of Phoenix PSY/490 Instructor: Vicki Koenig November 25, 2011 Pay it forward is becoming a more popular phrase it seems. When you drive through towns and different communities, one can see signs for soup kitchens, volunteer services, etc. There is something about the idea of giving back to others that is not only for the one receiving, but also beneficial to the one doing the work behind it. This idea is considered altruism and is driven by a want to contribute to someone else’s life instead of focusing on what one can get from others.There once was a movie called â€Å"Pay it forward† about the whole idea of doing something for someone with the only stipulation being to do something for someone else. Once, Oprah did a show on random acts of kindness and the reactions of those receiving these acts. Currently, it is the holiday season and it might be safe to assume that these acts of kindness might be more in the making. Some of these acts could include carrying someone’s groceries to their car, buying someone a cup of coffee at the local convenience store, or even paying someone’s check at a restaurant.Personally, one of my favorite things to do is pay the toll for multiple cars on one of our major highways. I enjoy this most because I am unable to see their reactions and I hope that they would â€Å"pay it forward† also essay writers online. Although I am not there to see their reactions, there have been moments when people have sped up to wave to me or mouth a thank you, which is nice even though these are not things I look for in doing this. Some might suggest that the idea of altruism can be based on Abraham Maslow’s hierarchy of needs model. This idea suggests that there are fundamental drives behind people’s actions.While the first two stages might suggest a more selfish need due to the idea of meeting one’s physical needs such as food, shelter, etc. and the second stage is security and the idea that one’s needs will be met in the future. The third stage is belong or a need for unconditional love and leads to the fourth and fifth stage. The fourth is purpose/esteem which is seen in one’s activities and the fifth is human potential that is suggested as meaning â€Å"self-actualisation† or the development of self, personal creative potential.In an article titled â€Å"Re-Establishing Altruism As a Viable Social Norm† (2011), it is stated that â€Å"people are generally keen to promote well-being of others, and a new generation is working as volunteers far more than their parents ever did†. This might be attributed to the idea that today needs are met with less struggle than in years past or that this â€Å"new generation is discovering the tremendous value of making a real contribution to the lives of others†.Another article in Psychology Today suggests that â€Å"acting with an unselfish regard for others doesn’t always come naturally, even though many psychologists believe we’re hard-wired for empathy†. And the final thought from this same article states that â€Å"most of us realize that when we make an effort to give without expectations of reciprocity, we feel fulfilled and energized†. So if this is the new idea behind our everyday, the world might not be doomed! I often feel that we are becoming more of a society that is all about themselves and what can be gained at anyone’s expense.This small assignment and project has shed some hope on my sometimes cynical attitude. And brings me to a place of realization in that there is always more that can be done on my part alone. References Psychology Today. (2011). Altruism Basics. Retrieved November 23, 2011 from http://www. psychologytoday. com/basics/altruism. Re-Establishing Altruism As A Viable Social Norm. (2011). Retrieved November 21, 2011 from http://www. altruists. org/ideas/psychol ogy.

Tuesday, October 22, 2019

Analysis Of Daisy Miller By Henry James English Literature Essay Essays

Analysis Of Daisy Miller By Henry James English Literature Essay Essays Analysis Of Daisy Miller By Henry James English Literature Essay Paper Analysis Of Daisy Miller By Henry James English Literature Essay Paper In the narrative Daisy Miller, written by Henry James, James tells a narrative about a immature American lady named Daisy Miller and her household members who are holidaying in Europe. Daisy is holidaying in a new universe and is seeking to happen a manner to larn and accommodate to her new milieus. She is seeking to suit in with the high category society but due to her life styles differences she is non accepted in their universe. Based on the narrative one would presume that the cause of Daisy s decease is eventful ; nevertheless, there are several given points that suggest it was strictly by happenstance and could hold happen to anyone. Henry James proves this by the usage of characters, puting, and symbolism. The other chief character focused is Winterbourne is a 27-year old expatriate American unmarried man ( Collins 1 ) . Winterbourne was raised and received most of his instruction in Geneva, he is considered to be reasonably quiet but extremely educated, he understands the European life styles but keeps his ain sentiment. Winterbourne has lost the capacity for love and he has lost the chance to come to life. ( Ohmann 3 ) . Daisy is turned off by him because she views him as a individual that does nt bask life. She feels like he would instead analyze and be serious so really populate his life. Winterbourne has an instant attractive force to her artlessness and beauty. However, Daisy sees him as being stiff and exanimate ( Wardley 4 ) . The chemical science between Winterbourne and Daisy is evident but because of her coquettish attitude he feels like it s merely a game to her. Although he is an American, he has the European attitude and shows his ego to Daisy. This shows the two un iverses that collided ; Daisy the American and Winterbourne the European. The scene for the narrative takes topographic point in Europe. The state is known for its well educated citizens, gustatory sensation for all right art and regard for societal societies. Daisy wants to see in Europe ( Deakin 5 ) . She is amazed at the life styles of the high category society and is taken off by the historical edifices and the people. It makes her experience like she is of import because she is able to see such a one time in a lifetime chance. The civilization is crude and refined in a developed gustatory sensation ( Scheiber 3 ) . The ambiance in Europe is cool and composure. Merely the fanciest and most expensive are for the European society. Many of the people in Europe have parties where people are to dress up in some of their finest apparels and come to garner. At these parties, many merely stand around speaking among each other while they listen to music and have a few drinks. Many of the people who attend this parties are considered to be high category or r ich folks. Daisy attends many of this parties but is frequently ill-mannered because she either leaves early to roll the streets with other gentleman or she spends all her clip speaking to people who are non considered to be reasonably of import. There are many symbols that describe the guiltless nature of Daisy. One symbol is when Daisy and Winterbourne foremost meet in the Hotel garden. As they are speaking, the Sun is beaming down on her caput. The sunlight beaming on her symbolizes Daisy as a pure guiltless immature adult female. When Daisy and Winterbourne meet, as she is standing entirely have oning a graphic white frock. Her frock and hat typify how pure Daisy truly is. She does nt recognize her failure to deliver him, Her expulsion from Eden ( Childress 2 ) . This foreshadows a loss of pureness and artlessness. The manner people view her is impure and guiltless because she has intimate gentleman friends. Although all she is making is speaking to them, still many of the Europeans view her as moving in a disgraceful manner. This led the Europeans to believe that caused her decease was eventful because she was out in the streets with so many work forces. They presumed that Daisy was wholly responsible for her ain decea se because she was moving so foolhardy. Europeans thought that if Daisy would hold acted with category and shown more regard for herself and others she would hold neer been out so tardily in the eventides. On the other manus, Daisy s decease was considered to others as being a coincident that could hold happen to anyone. There were several different unwellnesss distributing throughout Europe. There were no given facts that because Daisy was out so late that was the cause of her decease. After Daisy becomes badly, Winterbourne begins to recognize how pure she really is. He begins to experience sorry for the manner he and others viewed and judged her. The sad fact is that like many of the Europeans who judged Daisy, we all tend to look at others based on their actions and the manner we portray them.

Monday, October 21, 2019

Ulysses Grant Biography - 18th U.S. President

Ulysses Grant Biography - 18th U.S. President Ulysses Grants Childhood and Education Grant was born on April 27, 1822 in Point Pleasant, Ohio. He was raised in Georgetown, Ohio. He grew up on a farm. He went to local schools before attending the Presbyterian Academy and then being appointed to West Point. He was not necessarily the best student though he was good at math. When he graduated, he was placed in the infantry. Family Ties Grant was the son of Jesse Root Grant, a  tanner and merchant along with a strict abolitionist. His mother was  Hannah Simpson Grant. He had three sisters and two brothers.   On August 22, 1848, Grant married Julia Boggs Dent, the daughter of a St. Louis merchant and slaveholder.  The fact that her family owned slaves was a point of contention for Grants parents. Together they had three sons and one daughter: Frederick Dent, Ulysses Jr., Ellen, and Jesse Root Grant.   Ulysses Grants Military Career When Grant was graduated from West Point, he was stationed at Jefferson Barracks, Missouri. In 1846, America went to war with Mexico. Grant served with General Zachary Taylor and Winfield Scott. By the end of the war he was promoted to first lieutenant. He continued his military service  until 1854 when he resigned and tried farming. He had a hard time and eventually had to sell his farm. He did not rejoin the military until 1861 with the outbreak of the Civil War. U.S. Civil War At the beginning of the Civil War, Grant rejoined the military as a colonel of the 21st Illinois Infantry. He captured Fort Donelson, Tennessee in February 1862 which was the first major Union victory. He was promoted to major general. He had other victories at Vicksburg, Lookout Mountain, and Missionary Ridge. In March 1864, he was made the commander of all Union forces. He accepted Lees surrender at Appomattox, Virginia on April 9, 1865. After the war, he served as Secretary of War (1867-68). Nomination and Election Grant was unanimously nominated by the Republicans in 1868. The Republicans supported black suffrage in the south and a less lenient form of reconstruction than that espoused by Andrew Johnson. Grant was opposed by Democrat Horatio Seymour. In the end, Grant received 53% of the popular vote and 72% of the electoral vote. In 1872, Grant was easily renominated and won over Horace Greeley despite the many scandals that occurred during his administration. Events and Accomplishments of Ulysses Grants Presidency The largest issue of Grants presidency was  Reconstruction. He continued occupying the South with federal troops. His administration fought against states who denied blacks the right to vote. In 1870, the  fifteenth amendment  was passed providing that no one could be denied the right to vote based on race. Further in 1875, the  Civil Rights Act  was passed which ensured that African Americans would have the same right to use inns, transportation, and theaters among other things. However, the law was ruled unconstitutional in 1883. In 1873, an  economic depression  occurred that lasted five years. Many were unemployed, and many businesses failed. Grants administration was marked by five major scandals. Black Friday  - September 24, 1869. Two speculators,  Jay Gould  and  James Fisk, tried to buy up enough gold to corner the gold market while keeping Grant from dumping federal gold on the market. They drove up the price of gold quickly before Grant realized what was going on and was able to add enough gold onto the market to bring the price down. However, many investors and businesses were ruined because of this.Credit Mobilier - 1872. In order to cover up stealing money from the Union Pacific Railroad, officers of the Credit Mobilier company sold stocks cheaply to members of Congress.Grants Secretary of the Treasury, William A. Richardson gave special agent John D. Sanborn the job of collecting delinquent taxes allowing Sanborn to keep 50% of what he collected.Whiskey Ring - 1875. Many distillers and federal agents were keeping money that was being paid as liquor taxes. Grant called for punishment but protected his own personal secretary.Belknap Bribery - 1876. Grants Secre tary of War, W. W. Belknap was taking money from traders selling at Indian posts. However, through all of this, Grant still was able to get renominated and reelected to the presidency. Post-Presidential Period After Grant retired from the presidency, he and his wife traveled throughout Europe, Asia, and Africa. He then retired to Illinois in 1880. He helped his son by borrowing money to set him up with a friend named Ferdinand Ward in a brokerage firm. When they went bankrupt, Grant lost all his money. He ended up writing his memoirs for money to help his wife before he died on July 23, 1885. Historical Significance Grant is considered to be one of the worst presidents in Americas history. His time in office was marked by major scandals, and therefore he was not able to accomplish much during his two terms in office.

Sunday, October 20, 2019

Fascinating Facts About Caterpillars

Fascinating Facts About Caterpillars Surely youve seen a caterpillar in your lifetime, and youve probably even handled one, but how much do you know about Lepidopteran larvae? These cool facts about caterpillars will give you new respect for what remarkable creatures they are. A Caterpillar Has Just One Job to Eat During the larval stage, the caterpillar must consume enough to sustain itself through its pupal stage and into adulthood. Without proper nutrition, it may not have the energy to complete its metamorphosis. Malnourished caterpillars may reach adulthood, but be unable to produce eggs. Caterpillars can eat an enormous amount during a life cycle stage that typically lasts several weeks. Some consume 27,000 times their body weight during this life phase. Caterpillars Increase Their Body Mass by as Much as 1,000 Times or More The larval stage of the life cycle is all about growth. Within the span of a few weeks, the caterpillar will grow exponentially. Because its cuticle, or skin, is only so pliable, the caterpillar will molt multiple times as it gains size and mass. The stage between molts is called an instar, and most caterpillars go through 5 to 6 instars before pupating. No wonder caterpillars consume so much food! A Caterpillars First Meal Is Usually Its Eggshell In most cases, when a caterpillar ecloses (hatches) from its egg, it will consume the remainder of the shell. The outer layer of the egg, called the chorion, is rich in protein and provides the new larva  with a nutritious start. A Caterpillar Has as Many as 4,000 Muscles in Its Body Thats one seriously muscle-bound insect! By comparison, humans have just 629 muscles in a considerably larger body. The caterpillars head capsule alone consists of 248 individual muscles, and about 70 muscles control each body segment. Remarkably, each of the 4,000 muscles is innervated by one or two neurons.   Caterpillars Have 12 Eyes On each side of its head, a caterpillar has 6 tiny eyelets, called stemmata, arranged in a semi-circle. One of the 6 eyelets is usually offset a bit and located closer to the antennae. You would think an insect with 12 eyes would have excellent eyesight, but thats not the case. The stemmata serve merely to help the caterpillar differentiate between light and dark. If you watch a caterpillar, youll notice it sometimes moves its head from side to side. This most likely helps it judge depth  and distance as it navigates somewhat blindly. Caterpillars Produce Silk Using modified salivary glands along the sides of their mouth, caterpillars can produce silk as needed. Some caterpillars, like gypsy moths, disperse by ballooning from the treetops on a silken thread. Others, such as eastern tent caterpillars or webworms, construct silk tents in which they live communally. Bagworms use silk to join dead foliage together into a shelter. Caterpillars also use silk when they pupate, either to suspend a chrysalis or to construct a cocoon. Caterpillars Have 6 Legs, Just as Adult Butterflies or Moths Do There are way more than 6 legs on most caterpillars youve seen, but most of those legs are false legs, called prolegs, which help the caterpillar hold onto plant surfaces and allow it to climb. The 3 pairs of legs on the caterpillars thoracic segments are the true legs, which it will retain in adulthood. A caterpillar may have up to 5 pairs of prolegs on its abdominal segments, usually including a terminal pair on the hind end.   Caterpillars Move in a Wavelike Motion, From Back to Front Caterpillars with a full complement of prolegs move in a fairly predictable motion. Usually, the caterpillar will first anchor itself using the terminal pair of prolegs and then reach forward with one pair of legs at a time, starting from the hind end. Theres more going on than just leg action, though. The caterpillars blood pressure changes as it moves forward, and its gut, which is basically a cylinder suspended inside its body, advances in sync with the head and rear end. Inchworms and loopers, which have fewer prolegs, move by pulling their hind ends forward in contact with the thorax and then extending their front half. Caterpillars Get Creative When It Comes to Self Defense Life at the bottom of the food chain can be tough, so caterpillars employ all kinds of strategies to avoid becoming a bird snack. Some caterpillars, such as the early instars of black swallowtails, look like bird droppings. Certain inchworms in the family Geometridae mimic twigs, and bear markings that resemble leaf scars or bark. Other caterpillars use the opposite strategy, making themselves visible with bright colors to advertise their toxicity. A few caterpillars, like the spicebush swallowtail, display large eyespots to deter birds from eating them. If youve ever tried to take a caterpillar from its host plant, only to have it fall to the ground, youve observed it using thanatosis to thwart your efforts to collect it. A swallowtail caterpillar can be identified by its smelly osmeterium, a special defensive stink gland just behind the head. Many Caterpillars Use the Toxins From Their Host Plants to Their Own Advantage Caterpillars and plants co-evolve. Some host plants produce toxic or foul-tasting compounds meant to dissuade herbivores from munching their foliage. But many caterpillars can sequester the toxins in their bodies, effectively using these compounds to protect themselves from predators. The classic example of this is the monarch caterpillar and its host plant, milkweed. The monarch caterpillar ingests glycosides produced by the milkweed plant. These toxins remain within the monarch through adulthood, making the butterfly unpalatable to birds and other predators. Sources Caterpillar locomotion: A new model for soft-bodied climbing and burrowing robots, Barry A. Trimmer, Ann E. Takesian, and Brian M. Sweet, Tufts University, 2006.Unique Means of Animal Locomotion Reported for First Time, Tufts University media release, July 22, 2010.Caterpillars of Eastern North America, David L. Wagner.Encyclopedia of Insects, 2nd Edition, edited by Vincent H. Resh and Ring T. Cardà ©, 2009.Borror and Delongs Introduction to the Study of Insects, 7th Edition, by Charles A. Triplehorn and Norman F. Johnson, 2005.

Saturday, October 19, 2019

Discuss the beliefs in the supernatural in any of the selections in Essay

Discuss the beliefs in the supernatural in any of the selections in this section. In what ways would you consider these beliefs - Essay Example They believe everything looks supernatural until we explore it and prove it scientifically. According to them everything works in a methodical scientific way we just need to be technically advanced to understand it. Whereas those who belief in supernatural things accept the existence of supernatural things beyond their control. They actually find it magical and fanciful. Super natural belief system Every society has its own set of superstitions and super natural belief system. The belief about the extent of control over social and physical environment and over things varies from society to society. There are and will always be things which can be explained scientifically and whose results are very predictable e.g. with increase in disposable income our expenditure increases, two and two will make four etc. But we cannot deny the fact that there are things in life and around us which are beyond reasoning (Ferraro). For example during earth quake some of the houses are devastated while others remain unharmed. Some people despite their unhealthy habits remain healthy while conscious people get contaminated with all sorts of viruses. Some safe drivers encounter lethal accidents while rash drivers go luck unscathed. To explain the unexplainable people rely on things like magic, sorcery, witchcraft, religion, astronomy. Religious and other supernatural beliefs shape our values, beliefs and attitude and affect our businesses, work, lifestyle, efficiency and sense of responsibility. People will refrain from undesired and unwanted anti social behavior if they believe in super natural things out of the fear of punishment. If they believe in witchcraft they will refrain from deviant behavior because they regard their failures or misfortunes as a result of witchcraft. Superstitions This belief system leads to many superstitions present in every society. It is not considered food to walk under the ladder, Friday thirteenth, breaking of mirror, cat crossing your path etc. al l these are used to explain our misfortunes. An Anthology of US Latino literature There is a great no. of anthologies of short essays or short stories available but Latino Boom’s treatment of story and style is very different and unique. Here I will discuss his story in chapter four: The lost worlds. The story is about Dream and Betrayals. (Jose B Gonzales)Most of Latino’s fiction is about movement from one culture to another and the differences and the gaps and voids between the two. He handles the transition from a safe and convenient sphere to more painful one very expertly. Most of his stories deal with the delusion of the immigrants how they perceive their past. Mircea Eliadie regards the original edenic setting as â€Å"Land of pure†. It’s about false beliefs immigrants nurture about their native lands as they were a lost piece from paradise. Some go to such extent that they refuse to accept the changes and take active part in the new changed world. They spend their lives in day dreaming about their past live where everything was safe and recognizable and good. It impairs their ability to mingle with people. It talks about cultural differences. His usage of the word â€Å"between worlds† has almost become a cliche. His imagery of the distant green islands and peace of Puerto Rico reflects the notion of the lost paradise and debility to

Friday, October 18, 2019

Marketing plan for Nike (running shoes) Coursework

Marketing plan for Nike (running shoes) - Coursework Example Since the inception of Nike Company, the firm has been able to expand its market base to different parts of the world. Despite the increasing levels of globalization which results from liberalization of markets, efficient flow of information, and integration of economies, the firm has been able to maintain its strong competitive base. This is through the use of audio, visual, and print media in order to reach its target customers (Lamb, Hair, & McDaniel, 2012). Nike competitive advantage in the market are based on its strong goals which are to carry out on its legacy of innovative thinking whether is through developing products that will help athletes reach their potential or even to create a business opportunity that provide values to its shareholders. The company has an objective of helping the athletes unleash their potential irrespective of their background. Moreover, the firm focuses on improving the lives of less fortunate through participating in corporate social responsibility. Nike has been able to improve its competitive advantage through diversifying its markets. For instance, the company has positioned its running shoes strategically in the Europe and American markets (Lamb, 2012). This provides the company with a reliable source of revenue, an aspect that has enabled it to create a barrier of entry to other interested investors. Nike’s corporate strategy focuses on innovation and research. Over the years, the company has invested heavily on innovating new products through intensive research. This has enabled the firm to come up with innovative running shoes that helps in eliminating injuries and enhancing the comfort of the athletes. In addition, the strategy focuses on expanding the operations of the business in different parts of the world. Over the years, the firm has expanded to different markets across the world. This has reduced the risks and uncertainties associated with concentrating on a single market. The company’s business strategy

The writings of Augustine Essay Example | Topics and Well Written Essays - 1000 words

The writings of Augustine - Essay Example The political satires used in the writings of Augustine were aimed drawing a close relationship with the spread of Christianity in the western societies. Augustine was a Christian theologian who was concerned with showing the compatibility between the politics in the western society and the spread of Christianity. Augustine was the bishop of the Roman province in Africa. Augustine was a prolific writer and a strong proponent of Christianity. The writings of Augustine led to the spread of his increasing popularity and he was regarded as the father of the Church. The most important works of Augustine where he established a strong compatibility between the politics and Christianity are namely, City of God and Confessions. The age in which Augustine wrote his works resembled empiricism. The writings of the eighteenth century, however, reflected the growth of mercantilism. The growth of capital and the politics of the rulers showed that that they developed a strong urgency for the growth of capitalism which would help them to develop into stronger powers. The bold writings of Augustine that were produced in this age contained political satires that that unfolded the nuance and the political interests that created destructions and affected the spread of the religion of Christianity. Through his bold writings, Augustine expressed his deep concerns in showing the compatibility between the political environment and the spread of Christianity. â€Å"The worshippers of the many false Gods whom we worship by the customary name of pagans, blamed the Christian religion for the disaster and began to blaspheme the true God more sharply and bitterly than usual.† (Augustine,  Kries and  Fortin 1) After the conversion to Christianity, Augustine started to develop his own philosophies and theories based on the principle of the Christian religion. The tenure of Augustine as the Bishop in the Roman province in Africa saw the increase of slavery and influence of the politi cal interests in converting masses to religions of interests. This was heavily supported by the increase in capitalism and exploitation of human freedom. Augustine believed that by the grace of Jesus, the spirit of human freedom should be restored in the world and this should not be affected by the political measures in the western societies. The brave writings of Augustine in the area of politics and Christianity considering the socio-economic conditions of the eighteenth century have drawn perfect reconciliation of politics and Christianity which was driven by the attempts to restore humanity and curb the evil forces of power and politics. â€Å"Look at the Roman Republic which having changed little by little from the most beautiful and best, has become the worst and most disgraceful† (Augustine,  Kries and  Fortin 16). Augustine’s philosophy did not allow him to endorse the beliefs of the New Testament through ways of violence. Instead he believed that the true spirit of humanity lies in the peaceful politics that aims to take necessary steps for overall development of the society. Augustine also never wanted Christianity to dominate over the religious beliefs of other sections of the society. The reflection of these philosophies was done with the perspective to reconcile the political interests and the growth of Christianity. The reconcilement of politics and Christianity was the major concern in the political writings of Augustine as he realized that the holy spirit of man could develop in an environment which is peaceful and politically stable. Augustine showed deep concerns in reconciling politics and Chri

Thursday, October 17, 2019

Corporate Social Responisbility Research Paper Example | Topics and Well Written Essays - 1000 words

Corporate Social Responisbility - Research Paper Example This notion of corporate social responsibility has been heavily debated on in recent years so much so that researchers have called into question the existence of the â€Å"social† aspect in â€Å"corporate social responsibility†. Advocates of CSR have increasingly defined it in terms of human rights, ethics, closures of plants, relations with employees and the environment. A more comprehensive definition of CSR and sustainability encompasses all three foundations of sustainability, including the people, economy and the environment. If only the social and environmental development is taking place that is referred to as â€Å"bearable† (Chick and Micklethwaite 83). If only the social and economic development is taking place, that is referred to as â€Å"equitable†, whereas, if only the environmental and economic development takes places, that is referred to as â€Å"viable† (Chick and Micklethwaite 83). CSR is achieved only when all three dimensions d evelop simultaneously; that is, it is bearable, equitable and viable (Chick and Micklethwaite 83). The very mention of CSR calls into question the reason for business’ existence. Whether or not businesses should be responsible for the society and environment remains questionable since the primary purpose of a business is to satisfy its shareholders and generate profits. This is the line of argument used by classical theorists who are against the practice of CSR. According to Milton Friedman, the only social responsibility of a corporate entity is that of doing business in an open competitive marketplace that is free of deception and any fraud by utilizing its resources in order to increase profits (Friedman 6). The classical advocates further maintain that managers are mainly responsible for catering to shareholders’ interests by enhancing financial returns to the business. Practicing CSR may lead to the dilution of economic productivity since the investments made in C SR may be irrecoverable (due to the non-profit nature of CSR activities) (Friedman 6). However, advocates of CSR base their arguments in favor of the same for various reasons. Usually, companies engage in such disclosure for two main reasons: achieving a competitive edge by enhancing employee morale and goodwill and pressure by external stakeholders such as governments, environmental agencies etc. Not adhering to the latter’s demands would mean a loss in company’s goodwill and, hence, profits. This leads us to the argument related to stakeholder view used by proponents of CSR. This view was conceptualized as early as in the 1970’s by Freeman who described organizations in terms of the managers’ relationships with stakeholders (Garriga and Mele 59). A stakeholder is typically any individual entity or group that has an impact on, or is affected by the corporation’s goals and objectives (Garriga and Mele 59). Companies can reconcile the conflicting ob jectives amongst stakeholders by engaging in a successful CSR dialogue with them in which the company gives something of value (such as a public service) to a significant community in lieu of popular support from groups and individuals within the environment. Advocates of CSR further state that firms are required to exercise duty of care when dealing with both primary and silent stakeholders (such as the community) (O’Riordan and Fairbrass 748). By recognizing the fact that shareholders’ interests cannot be satisfied without satisfying (to some degree) the

Carry Trade Essay Example | Topics and Well Written Essays - 1250 words

Carry Trade - Essay Example While on the one hand exports are down and production are down, on the other hand a large number of job losses is causing further slide in economy. This raises the curiosity about the importance of carry trade in this scenario. Carry trade, as the name suggests is the trading activity that one indulges by carrying forward the returns or losses of the holdings by an individual or a business entity. Yen has been a popular instrument amongst the trading community as an important tool for holding foreign exchange and dealing in financial transactions. Selling the Yen at lower interest rates and then using the funds for purchasing higher interest currencies like dollar or pounds would yield considerable profits. Such a carry trade prospered, with the hope of sustaining the higher swap ratio and lower interest rates on Yen. But, with western economies reeling under recession, the Yen has considerably become strong, resulting in some loss making propositions for Carry trades. This has broug ht the issue of carry trade in focus. ... Such a carry trade prospered, with the hope of sustaining the higher swap ratio and lower interest rates on Yen. But, with western economies reeling under recession, the Yen has considerably become strong, resulting in some loss making propositions for Carry trades. This has brought the issue of carry trade in focus. This study is an effort towards analyzing the trends in Carry trade over the years and its impact on the economic conditions of different countries. An effort will also be made to foresee the futuristic trends while analysing and comparing the development of the markets. Chapter-1: Introduction Economic activities, financial services, and banking have experienced quite a few changes in the last couple of decades. With the opening up of economies, the industrial activities saw an upsurge on global scale. The financial system around the world also saw need to have a matching regulatory mechanism. The exchange rates became more transparent while investments in one region or country poured in from different corners of the world. The differences in rates of interests, prices indices, exchange rates led to a trading system termed as carry trade. 1.1 Background of the Study For many years the trading in foreign exchange has been a simple process. It basically involved buying the currencies with the highest returns while selling those with the lowest. Such a 'carry trade' helped in creating high returns with low volatility. This trend continued for many years creating bumper returns for some investors. Some analysts considered that Carry Trade violated the fundamental theories explaining the markets like the uncovered interest rate parity (UIP). The UIP states

Wednesday, October 16, 2019

Corporate Social Responisbility Research Paper Example | Topics and Well Written Essays - 1000 words

Corporate Social Responisbility - Research Paper Example This notion of corporate social responsibility has been heavily debated on in recent years so much so that researchers have called into question the existence of the â€Å"social† aspect in â€Å"corporate social responsibility†. Advocates of CSR have increasingly defined it in terms of human rights, ethics, closures of plants, relations with employees and the environment. A more comprehensive definition of CSR and sustainability encompasses all three foundations of sustainability, including the people, economy and the environment. If only the social and environmental development is taking place that is referred to as â€Å"bearable† (Chick and Micklethwaite 83). If only the social and economic development is taking place, that is referred to as â€Å"equitable†, whereas, if only the environmental and economic development takes places, that is referred to as â€Å"viable† (Chick and Micklethwaite 83). CSR is achieved only when all three dimensions d evelop simultaneously; that is, it is bearable, equitable and viable (Chick and Micklethwaite 83). The very mention of CSR calls into question the reason for business’ existence. Whether or not businesses should be responsible for the society and environment remains questionable since the primary purpose of a business is to satisfy its shareholders and generate profits. This is the line of argument used by classical theorists who are against the practice of CSR. According to Milton Friedman, the only social responsibility of a corporate entity is that of doing business in an open competitive marketplace that is free of deception and any fraud by utilizing its resources in order to increase profits (Friedman 6). The classical advocates further maintain that managers are mainly responsible for catering to shareholders’ interests by enhancing financial returns to the business. Practicing CSR may lead to the dilution of economic productivity since the investments made in C SR may be irrecoverable (due to the non-profit nature of CSR activities) (Friedman 6). However, advocates of CSR base their arguments in favor of the same for various reasons. Usually, companies engage in such disclosure for two main reasons: achieving a competitive edge by enhancing employee morale and goodwill and pressure by external stakeholders such as governments, environmental agencies etc. Not adhering to the latter’s demands would mean a loss in company’s goodwill and, hence, profits. This leads us to the argument related to stakeholder view used by proponents of CSR. This view was conceptualized as early as in the 1970’s by Freeman who described organizations in terms of the managers’ relationships with stakeholders (Garriga and Mele 59). A stakeholder is typically any individual entity or group that has an impact on, or is affected by the corporation’s goals and objectives (Garriga and Mele 59). Companies can reconcile the conflicting ob jectives amongst stakeholders by engaging in a successful CSR dialogue with them in which the company gives something of value (such as a public service) to a significant community in lieu of popular support from groups and individuals within the environment. Advocates of CSR further state that firms are required to exercise duty of care when dealing with both primary and silent stakeholders (such as the community) (O’Riordan and Fairbrass 748). By recognizing the fact that shareholders’ interests cannot be satisfied without satisfying (to some degree) the

Tuesday, October 15, 2019

Hip Hop Genre Essay Example | Topics and Well Written Essays - 1250 words

Hip Hop Genre - Essay Example He ventured into other business sectors, primarily in the fashion and media industries and has reaped huge dividends. His efforts o take the music from the streets to the airwaves was a resounding success. His contribution is still felt to date and has caused the immense wealth being displayed by the musicians. His business investment methods have been copied by heavyweights such as Jay Z, P Diddy and 50 Cent (vh1, 2007). Unfortunately, the freedom of expression promoted by hip-hop gave way to a negative expression channel, the use and glorification of violence, sex and drugs in lyrics. The demeaning use of women as sexual objects whose aim is to get pecuniary advantage from the rappers is a main concern. Ayanna (2008) states that: "images are shown to go along with a lot of the explicit lyrics that commonly contain name calling to suggest that women are not worth anything more than money, if that. Women are described as being only good for sexual relations by rappers who describe their life as being that of a pimp." This disrespect of women has had feminists on the rampage for years. Another vice promoted is the violence culture. The prolific growth of popularity of this culture is due to the exploitative use by record labels to make more bucks from their popularity. This phenomenon occurred during the 1990's when hip-hop became a cash cow and "gangsta rap" started. Real life "beef" was used to emotionally attach the listeners to the lyrical content. This was in contrast to the original message of hip hop, to distract youth from rowdy gang like behavior. One of the most famous incidents of violent exchange was the Biggy-Tupac feud, which resulted in both their deaths.... According to the essay "Hip Hop Genre" findings, the freedom of expression promoted by hip-hop gave way to a negative expression channel, the use and glorification of violence, sex and drugs in lyrics. The demeaning use of women as sexual objects whose aim is to get pecuniary advantage from the rappers is the main concern. Ayanna (2008) states that: â€Å"†¦images are shown to go along with a lot of the explicit lyrics that commonly contain name calling to suggest that women are not worth anything more than money if that. Women are described as being only good for sexual relations by rappers who describe their life as being that of a pimp.† This disrespect of women has had feminists on the rampage for years. Another vice promoted is the violence culture. The prolific growth of popularity of this culture is due to the exploitative use by record labels to make more bucks from their popularity. This phenomenon occurred during the 1990’s when hip-hop became a cash cow and â€Å"gangsta rap† started. Real life â€Å"beef† was used to emotionally attach the listeners to the lyrical content. This was in contrast to the original message of hip hop, to distract youth from rowdy gang like behavior. One of the most famous incidents of violent exchange was the Biggy-Tupac feud, which resulted in both their deaths. This lyric sample was taken from Tupac’s song â€Å"We Hit ‘Em Up† shows the extent of the hate that characterized their relationship. In this respect, I think these two; Biggie and Tupac were the most damaging influences in hip-hop.

Monday, October 14, 2019

Television Is harming children Essay Example for Free

Television Is harming children Essay It is my belief that television has overstepped its boundaries. It is my belief that children are becoming desensitised towards violence. It is my belief that this is to stop. What if I was to tell you that there are, today, half as many art programmes as there were in 1992? What if I was to tell you that current affairs programmes have fallen by more than a third? The truth is that all television executives want to do is make money, they do not want to provide a service, and they do not want to make the world a better place. And the reason that these programmes do not make money is the change of our childrens cultures. They no longer want to watch a programme that is educational; they would rather watch meaningless rubbish that caters for the intellectually challenged. I know this because I am guilty of it. I would much rather watch the ninth series of friends than watch the news, and I would much rather watch the Simpsons than watch an art programme. Let me describe to you a period. In this time period television is useful; shows provide a public service whilst still maintaining good ratings. In this time television has a purpose, which it lacks in this modern time. This time was when television was first produced. Its maker intended it to inform the masses about day-to-day events and problems, but this ideal has spiralled out of control. Your children are becoming desensitised, not only to sex, regularly displayed before the watershed, but to violence as well. Children growing up will become young men, and these young men will copy what theyve seen on television. You all know what impressionable young children are capable of. It has happened recently; a trio of gangsters, barely twenty, gunned down two innocent girls at a New Year party as a result of gang warfare. These people have to get their ideals somewhere, and if they are not in a strong family they will look to other mediums for guidance, like television, like videogames, and they will think the things are idols do are alright. Let me tell you this is not the case! Just recently there has been a story running in Coronation Street of a murderer and a drug dealer, and in the final episode two people were graphically murdered with a crowbar! And this was at seven thirty, well before the watershed. We are in the year of the couch potato. 78 % of people under sixty in the United Kingdom watch more television than read books. And if this television is of the aforementioned quality then this disturbs me. What about the literary skills that will be wasted? TV Quiz shows such as the weakest link and Who wants to be a millionaire, which value, random factual knowledge over, deeper understanding are creating a generation of vacuous teenagers, according to a leading Headmaster. Dr Giles Mercer, head of Prior park College in Bath believes that unless teenagers are fed a more demanding diet by the media they will become cynical about politics and apathetic about voting. So television is actually harming your children. So think of the children brought up to watch soaps rather than read a good book, which provides entertainment whilst also benefiting the child involved. But as long as we are entertained, right? Wrong! Television has pushed its limits; certainly there have been some events worthy of recognition, but in the main the programmes shown are demolishing our morals, they are making us complacent about the world around us. Not many people could argue Jerry Springer has a positive impact on our nations youth. If we were to believe everything television told us then we would all be certain that bombing Iraq is the right thing to do. The remaining factual programmes are often biased and do not show the big picture, e.g. what about the refugees, what about the children, are they part of Saddams regime? There are people who believe, as I do, that television could be beneficial for us; Tess Alps, deputy chairman of the media agency writes, I believe that the recent dumbing down of programmes and relaxation of censorship is wrong. Television could be successful, and informative but Television chiefs just dont want to see it.

Sunday, October 13, 2019

Evaluating The Waste Water Treatment Processes Environmental Sciences Essay

Evaluating The Waste Water Treatment Processes Environmental Sciences Essay Domestic wastewater treatment or sewage treatment, is the process of removing contaminants from wastewater and household sewage, both runoff (effluents) and domestic. It includes physical, chemical, and biological processes to remove physical, chemical and biological contaminants. Its objective is to produce an environmentally-safe fluid waste stream (or treated effluent) and a solid waste (or treated sludge) suitable for disposal or reuse (usually as farm fertilizer). Using advanced technology it is now possible to re-use sewage effluent for drinking water, although Singapore is the only country to implement such technology on a production scale in its production of NEWater. 1.2 ORIGIN OF WASTE WATER Sewage is created by residential, institutional, and commercial and industrial establishments and includes household waste liquid from toilets, baths, showers, kitchens, sinks and so forth that is disposed of via sewers. In many areas, sewage also includes liquid waste from industry and commerce. The separation and draining of household waste into greywater and blackwater is becoming more common in the developed world, with greywater being permitted to be used for watering plants or recycled for flushing toilets. Sewage may include stormwater runoff. Sewerage systems capable of handling stormwater are known as combined systems. Combined sewer systems are usually avoided now because precipitation causes widely varying flows reducing sewage treatment plant efficiency. Combined sewers require much larger, more expensive, treatment facilities than sanitary sewers. Heavy storm runoff may overwhelm the sewage treatment system, causing a spill or overflow. Sanitary sewers are typically much smaller than combined sewers, and they are not designed to transport stormwater. Backups of raw sewage can occur if excessive Infiltration/Inflow is allowed into a sanitary sewer system. Modern sewered developments tend to be provided with separate storm drain systems for rainwater. As rainfall travels over roofs and the ground, it may pick up various contaminants including soil particles and other sediment, heavy metals, organic compounds, animal waste, and oil and grease. (See urban runoff.) Some jurisdictions require stormwater to receive some level of treatment before being discharged directly into waterways. Examples of treatment processes used for stormwater include retention basins, wetlands, buried vaults with various kinds of media filters, and vortex separators (to remove coarse solids). CHAPTER TWO 2.1 OVERVIEW OF WASTE WATER TREATMENT PROCESSES Sewage can be treated close to where it is created, a decentralised system, (in septic tanks, biofilters or aerobic treatment systems), or be collected and transported via a network of pipes and pump stations to a municipal treatment plant, a centralised system, (see sewerage and pipes and infrastructure). Sewage collection and treatment is typically subject to local, state and federal regulations and standards. Industrial sources of wastewater often require specialized treatment processes as shown in the diagram below: Process Flow Diagram for a typical treatment plant via Subsurface Flow Constructed Wetlands (SFCW) Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment. Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. The settled and floating materials are removed and the remaining liquid may be discharged or subjected to secondary treatment. Secondary treatment removes dissolved and suspended biological matter. Secondary treatment is typically performed by indigenous, water-borne micro-organisms in a managed habitat. Secondary treatment may require a separation process to remove the micro-organisms from the treated water prior to discharge or tertiary treatment. Tertiary treatment is sometimes defined as anything more than primary and secondary treatment in order to allow rejection into a highly sensitive or fragile ecosystem (estuaries, low-flow rivers, coral reefs etc.). Treated water is sometimes disinfected chemically or physically (for example, by lagoons and microfiltration) prior to discharge into a stream, river, bay, lagoon or wetland, or it can be used for the irrigation of a golf course, green way or park. If it is sufficiently clean, it can also be used for groundwater recharge or agricultural purposes. 2.2 PRE-TREATMENT Pre-treatment removes materials that can be easily collected from the raw waste water before they damage or clog the pumps and skimmers of primary treatment clarifiers (trash, tree limbs, leaves, etc.). SCREENING The influent sewage water is screened to remove all large objects like cans, rags, sticks, plastic packets etc. carried in the sewage stream. This is most commonly done with an automated mechanically raked bar screen in modern plants serving large populations, whilst in smaller or less modern plants a manually cleaned screen may be used. The raking action of a mechanical bar screen is typically paced according to the accumulation on the bar screens and/or flow rate. The solids are collected and later disposed in a landfill or incinerated. Bar screens or mesh screens of varying sizes may be used to optimize solids removal. If gross solids are not removed they become entrained in pipes and moving parts of the treatment plant and can cause substantial damage and inefficiency in the process. GRIT REMOVAL Pre-treatment may include a sand or grit channel or chamber where the velocity of the incoming wastewater is adjusted to allow the settlement of sand, grit, stones, and broken glass. These particles are removed because they may damage pumps and other equipment. For small sanitary sewer systems, the grit chambers may not be necessary, but grit removal is desirable at larger plants. FAT AND GREASE REMOVAL In some larger plants, fat and grease is removed by passing the sewage through a small tank where skimmers collect the fat floating on the surface. Air blowers in the base of the tank may also be used to help recover the fat as a froth. In most plants however, fat and grease removal takes place in the primary settlement tank using mechanical surface skimmers. 2.3 PRIMARY TREATMENT In the primary sedimentation stage, sewage flows through large tanks, commonly called primary clarifiers or primary sedimentation tanks. The tanks are used to settle sludge while grease and oils rise to the surface and are skimmed off. Primary settling tanks are usually equipped with mechanically driven scrapers that continually drive the collected sludge towards a hopper in the base of the tank where it is pumped to sludge treatment facilities. Grease and oil from the floating material can sometimes be recovered for saponification. The dimensions of the tank should be designed to effect removal of a high percentage of the floatables and sludge. A typical sedimentation tank may remove from 60 to 65 percent of suspended solids, and from 30 to 35 percent of biochemical oxygen demand (BOD) from the sewage. 2.4 SECONDARY TREATMENT Secondary treatment is designed to substantially degrade the biological content of the sewage which are derived from human waste, food waste, soaps and detergent. The majority of municipal plants treat the settled sewage liquor using aerobic biological processes. To be effective, the biota require both oxygen and food to live. The bacteria and protozoa consume biodegradable soluble organic contaminants (e.g. sugars, fats, organic short-chain carbon molecules, etc.) and bind much of the less soluble fractions into floc. Secondary treatment systems are classified as fixed-film or suspended-growth systems. Fixed-film or attached growth systems include trickling filters and rotating biological contactors, where the biomass grows on media and the sewage passes over its surface. Suspended-growth systems include activated sludge, where the biomass is mixed with the sewage and can be operated in a smaller space than fixed-film systems that treat the same amount of water. However, fixed-film systems are more able to cope with drastic changes in the amount of biological material and can provide higher removal rates for organic material and suspended solids than suspended growth systems.[6]:11-13 Roughing filters are intended to treat particularly strong or variable organic loads, typically industrial, to allow them to then be treated by conventional secondary treatment processes. Characteristics include filters filled with media to which wastewater is applied. They are designed to allow high hydraulic loading and a high level of aeration. On larger installations, air is forced through the media using blowers. The resultant wastewater is usually within the normal range for conventional treatment processes. A generalized, schematic diagram of an activated sludge process. A filter removes a small percentage of the suspended organic matter, while the majority of the organic matter undergoes a change of character, only due to the biological oxidation and nitrification taking place in the filter. With this aerobic oxidation and nitrification, the organic solids are converted into coagulated suspended mass, which is heavier and bulkier, and can settle to the bottom of a tank. The effluent of the filter is therefore passed through a sedimentation tank, called a secondary clarifier, secondary settling tank or humus tank. ACTIVATED SLUDGE In general, activated sludge plants encompass a variety of mechanisms and processes that use dissolved oxygen to promote the growth of biological floc that substantially removes organic material. The process traps particulate material and can, under ideal conditions, convert ammonia to nitrite and nitrate and ultimately to nitrogen gas. SURFACE-AERATED BASINS (LAGOONS) Many small municipal sewage systems in the United States (1 million gal./day or less) use aerated lagoons. Most biological oxidation processes for treating industrial wastewaters have in common the use of oxygen (or air) and microbial action. Surface-aerated basins achieve 80 to 90 percent removal of BOD with retention times of 1 to 10 days. The basins may range in depth from 1.5 to 5.0 metres and use motor-driven aerators floating on the surface of the wastewater. In an aerated basin system, the aerators provide two functions: they transfer air into the basins required by the biological oxidation reactions, and they provide the mixing required for dispersing the air and for contacting the reactants (that is, oxygen, wastewater and microbes). Typically, the floating surface aerators are rated to deliver the amount of air equivalent to 1.8 to 2.7  kg O2/kW ·h. However, they do not provide as good mixing as is normally achieved in activated sludge systems and therefore aerated basins do not achieve the same performance level as activated sludge units. Biological oxidation processes are sensitive to temperature and, between 0  °C and 40  °C, the rate of biological reactions increase with temperature. Most surface aerated vessels operate at between 4  °C and 32  °C. CONSTRUCTED WETLANDS Constructed wetlands (can either be surface flow or subsurface flow, horizontal or vertical flow), include engineered reedbeds and belong to the family of phytorestoration and ecotechnologies; they provide a high degree of biological improvement and depending on design, act as a primary, secondary and sometimes tertiary treatment, also see phytoremediation. One example is a small reedbed used to clean the drainage from the elephants enclosure at Chester Zoo in England; numerous CWs are used to recycle the water of the city of Honfleur in France and numerous other towns in Europe, the US, Asia and Australia. They are known to be highly productive systems as they copy natural wetlands, called the Kidneys of the earth for their fundamental recycling capacity of the hydrological cycle in the biosphere. Robust and reliable, their treatment capacities improve as time go by, at the opposite of conventional treatment plants whose machinery age with time. They are being increasingly used, alt hough adequate and experienced design are more fundamental than for other systems and space limitation may impede their use. FILTER BEDS (OXIDIZING BEDS) In older plants and those receiving variable loadings, trickling filter beds are used where the settled sewage liquor is spread onto the surface of a bed made up of coke (carbonized coal), limestone chips or specially fabricated plastic media. Such media must have large surface areas to support the biofilms that form. The liquor is typically distributed through perforated spray arms. The distributed liquor trickles through the bed and is collected in drains at the base. These drains also provide a source of air which percolates up through the bed, keeping it aerobic. Biological films of bacteria, protozoa and fungi form on the medias surfaces and eat or otherwise reduce the organic content. This biofilm is often grazed by insect larvae, snails, and worms which help maintain an optimal thickness. Overloading of beds increases the thickness of the film leading to clogging of the filter media and ponding on the surface. SOIL BIO-TECHNOLOGY A new process called Soil Bio-Technology (SBT) developed at IIT Bombay has shown tremendous improvements in process efficiency enabling total water reuse, due to extremely low operating power requirements of less than 50 joules per kg of treated water. Typically SBT systems can achieve chemical oxygen demand (COD) levels less than 10  mg/L from sewage input of COD 400  mg/L. SBT plants exhibit high reductions in COD values and bacterial counts as a result of the very high microbial densities available in the media. Unlike conventional treatment plants, SBT plants produce insignificant amounts of sludge, precluding the need for sludge disposal areas that are required by other technologies. BIOLOGICAL AERATED FILTERS Biological Aerated (or Anoxic) Filter (BAF) or Biofilters combine filtration with biological carbon reduction, nitrification or denitrification. BAF usually includes a reactor filled with a filter media. The media is either in suspension or supported by a gravel layer at the foot of the filter. The dual purpose of this media is to support highly active biomass that is attached to it and to filter suspended solids. Carbon reduction and ammonia conversion occurs in aerobic mode and sometime achieved in a single reactor while nitrate conversion occurs in anoxic mode. BAF is operated either in upflow or downflow configuration depending on design specified by manufacturer. Schematic diagram of a typical rotating biological contactor (RBC). The treated effluent clarifier/settler is not included in the diagram. ROTATING BIOLOGICAL CONTACTORS Rotating biological contactors (RBCs) are mechanical secondary treatment systems, which are robust and capable of withstanding surges in organic load. RBCs were first installed in Germany in 1960 and have since been developed and refined into a reliable operating unit. The rotating disks support the growth of bacteria and micro-organisms present in the sewage, which break down and stabilise organic pollutants. To be successful, micro-organisms need both oxygen to live and food to grow. Oxygen is obtained from the atmosphere as the disks rotate. As the micro-organisms grow, they build up on the media until they are sloughed off due to shear forces provided by the rotating discs in the sewage. Effluent from the RBC is then passed through final clarifiers where the micro-organisms in suspension settle as a sludge. The sludge is withdrawn from the clarifier for further treatment. A functionally similar biological filtering system has become popular as part of home aquarium filtration and purification. The aquarium water is drawn up out of the tank and then cascaded over a freely spinning corrugated fiber-mesh wheel before passing through a media filter and back into the aquarium. The spinning mesh wheel develops a biofilm coating of microorganisms that feed on the suspended wastes in the aquarium water and are also exposed to the atmosphere as the wheel rotates. This is especially good at removing waste . MEMBRANE BIOREACTORS Membrane bioreactors (MBR) combine activated sludge treatment with a membrane liquid-solid separation process. The membrane component uses low pressure microfiltration or ultra filtration membranes and eliminates the need for clarification and tertiary filtration. The membranes are typically immersed in the aeration tank; however, some applications utilize a separate membrane tank. One of the key benefits of an MBR system is that it effectively overcomes the limitations associated with poor settling of sludge in conventional activated sludge (CAS) processes. The technology permits bioreactor operation with considerably higher mixed liquor suspended solids (MLSS) concentration than CAS systems, which are limited by sludge settling. The process is typically operated at MLSS in the range of 8,000-12,000  mg/L, while CAS are operated in the range of 2,000-3,000  mg/L. The elevated biomass concentration in the MBR process allows for very effective removal of both soluble and particula te biodegradable materials at higher loading rates. Thus increased sludge retention times, usually exceeding 15 days, ensure complete nitrification even in extremely cold weather. SECONDARY SEDIMENTATION The final step in the secondary treatment stage is to settle out the biological floc or filter material through a secondary clarifier and to produce sewage water containing low levels of organic material and suspended matter. TERTIARY TREATMENT The purpose of tertiary treatment is to provide a final treatment stage to raise the effluent quality before it is discharged to the receiving environment (sea, river, lake, ground, etc.). More than one tertiary treatment process may be used at any treatment plant. If disinfection is practiced, it is always the final process. It is also called effluent polishing. FILTRATION Sand filtration removes much of the residual suspended matter. Filtration over activated carbon, also called carbon adsorption, removes residual toxins. LAGOONING Lagooning provides settlement and further biological improvement through storage in large man-made ponds or lagoons. These lagoons are highly aerobic and colonization by native macrophytes, especially reeds, is often encouraged. Small filter feeding invertebrates such as Daphnia and species of Rotifera greatly assist in treatment by removing fine particulates. NUTRIENT REMOVAL Wastewater may contain high levels of the nutrients nitrogen and phosphorus. Excessive release to the environment can lead to a build up of nutrients, called eutrophication, which can in turn encourage the overgrowth of weeds, algae, and cyanobacteria (blue-green algae). This may cause an algal bloom, a rapid growth in the population of algae. The algae numbers are unsustainable and eventually most of them die. The decomposition of the algae by bacteria uses up so much of oxygen in the water that most or all of the animals die, which creates more organic matter for the bacteria to decompose. In addition to causing deoxygenation, some algal species produce toxins that contaminate drinking water supplies. Different treatment processes are required to remove nitrogen and phosphorus. NITROGEN REMOVAL The removal of nitrogen is effected through the biological oxidation of nitrogen from ammonia to nitrate (nitrification), followed by denitrification, the reduction of nitrate to nitrogen gas. Nitrogen gas is released to the atmosphere and thus removed from the water. Nitrification itself is a two-step aerobic process, each step facilitated by a different type of bacteria. The oxidation of ammonia (NH3) to nitrite (NO2à ¢Ã‹â€ Ã¢â‚¬â„¢) is most often facilitated by Nitrosomonas spp. (nitroso referring to the formation of a nitroso functional group). Nitrite oxidation to nitrate (NO3à ¢Ã‹â€ Ã¢â‚¬â„¢), though traditionally believed to be facilitated by Nitrobacter spp. (nitro referring the formation of a nitro functional group), is now known to be facilitated in the environment almost exclusively by Nitrospira spp. Denitrification requires anoxic conditions to encourage the appropriate biological communities to form. It is facilitated by a wide diversity of bacteria. Sand filters, lagooning and reed beds can all be used to reduce nitrogen, but the activated sludge process (if designed well) can do the job the most easily. Since denitrification is the reduction of nitrate to dinitrogen gas, an electron donor is needed. This can be, depending on the wastewater, organic matter (from faeces), sulfide, or an added donor like methanol. PHOSPHORUS REMOVAL Phosphorus removal is important as it is a limiting nutrient for algae growth in many fresh water systems. (For a description of the negative effects of algae, see Nutrient removal). It is also particularly important for water reuse systems where high phosphorus concentrations may lead to fouling of downstream equipment such as reverse osmosis. Phosphorus can be removed biologically in a process called enhanced biological phosphorus removal. In this process, specific bacteria, called polyphosphate accumulating organisms (PAOs), are selectively enriched and accumulate large quantities of phosphorus within their cells (up to 20 percent of their mass). When the biomass enriched in these bacteria is separated from the treated water, these biosolids have a high fertilizer value. Phosphorus removal can also be achieved by chemical precipitation, usually with salts of iron (e.g. ferric chloride), aluminum (e.g. alum), or lime. This may lead to excessive sludge production as hydroxides precipitates and the added chemicals can be expensive. Chemical phosphorus removal requires significantly smaller equipment footprint than biological removal, is easier to operate and is often more reliable than biological phosphorus removal  . Another method for phosphorus removal is to use granular laterite. Once removed, phosphorus, in the form of a phosphate-rich sludge, may be stored in a land fill or resold for use in fertilizer. DISINFECTION The purpose of disinfection in the treatment of waste water is to substantially reduce the number of microorganisms in the water to be discharged back into the environment. The effectiveness of disinfection depends on the quality of the water being treated (e.g., cloudiness, pH, etc.), the type of disinfection being used, the disinfectant dosage (concentration and time), and other environmental variables. Cloudy water will be treated less successfully, since solid matter can shield organisms, especially from ultraviolet light or if contact times are low. Generally, short contact times, low doses and high flows all militate against effective disinfection. Common methods of disinfection include ozone, chlorine, ultraviolet light, or sodium hypochlorite. Chloramine, which is used for drinking water, is not used in waste water treatment because of its persistence. Chlorination remains the most common form of waste water disinfection in North America due to its low cost and long-term history of effectiveness. One disadvantage is that chlorination of residual organic material can generate chlorinated-organic compounds that may be carcinogenic or harmful to the environment. Residual chlorine or chloramines may also be capable of chlorinating organic material in the natural aquatic environment. Further, because residual chlorine is toxic to aquatic species, the treated effluent must also be chemically dechlorinated, adding to the complexity and cost of treatment. Ultraviolet (UV) light can be used instead of chlorine, iodine, or other chemicals. Because no chemicals are used, the treated water has no adverse effect on organisms that later consume it, as may be the case with other methods. UV radiation causes damage to the genetic structure of bacteria, viruses, and other pathogens, making them incapable of reproduction. The key disadvantages of UV disinfection are the need for frequent lamp maintenance and replacement and the need for a highly treated effluent to ensure that the target microorganisms are not shielded from the UV radiation (i.e., any solids present in the treated effluent may protect microorganisms from the UV light). In the United Kingdom, UV light is becoming the most common means of disinfection because of the concerns about the impacts of chlorine in chlorinating residual organics in the wastewater and in chlorinating organics in the receiving water. Some sewage treatment systems in Canada and the US also use UV light for their effluent water disinfection. Ozone (O3) is generated by passing oxygen (O2) through a high voltage potential resulting in a third oxygen atom becoming attached and forming O3. Ozone is very unstable and reactive and oxidizes most organic material it comes in contact with, thereby destroying many pathogenic microorganisms. Ozone is considered to be safer than chlorine because, unlike chlorine which has to be stored on site (highly poisonous in the event of an accidental release), ozone is generated onsite as needed. Ozonation also produces fewer disinfection by-products than chlorination. A disadvantage of ozone disinfection is the high cost of the ozone generation equipment and the requirements for special operators. ODOUR CONTROL Odours emitted by sewage treatment are typically an indication of an anaerobic or septic condition. Early stages of processing will tend to produce smelly gases, with hydrogen sulfide being most common in generating complaints. Large process plants in urban areas will often treat the odours with carbon reactors, a contact media with bio-slimes, small doses of chlorine, or circulating fluids to biologically capture and metabolize the obnoxious gases. Other methods of odour control exist, including addition of iron salts, hydrogen peroxide, calcium nitrate, etc. to manage hydrogen sulfide levels. PACKAGE PLANTS AND BATCH REACTORS To use less space, treat difficult waste and intermittent flows, a number of designs of hybrid treatment plants have been produced. Such plants often combine at least two stages of the three main treatment stages into one combined stage. In the UK, where a large number of wastewater treatment plants serve small populations, package plants are a viable alternative to building a large structure for each process stage. In the US, package plants are typically used in rural areas, highway rest stops and trailer parks. One type of system that combines secondary treatment and settlement is the sequencing batch reactor (SBR). Typically, activated sludge is mixed with raw incoming sewage, and then mixed and aerated. The settled sludge is run off and re-aerated before a proportion is returned to the headworks. SBR plants are now being deployed in many parts of the world. The disadvantage of the SBR process is that it requires a precise control of timing, mixing and aeration. This precision is typically achieved with computer controls linked to sensors. Such a complex, fragile system is unsuited to places where controls may be unreliable, poorly maintained, or where the power supply may be intermittent. Extended aeration package plants use separate basins for aeration and settling, and are somewhat larger than SBR plants with reduced timing sensitivity. Package plants may be referred to as high charged or low charged. This refers to the way the biological load is processed. In high charged systems, the biological stage is presented with a high organic load and the combined floc and organic material is then oxygenated for a few hours before being charged again with a new load. In the low charged system the biological stage contains a low organic load and is combined with flocculate for longer times. SLUDGE TREATMENT AND DISPOSAL The sludges accumulated in a wastewater treatment process must be treated and disposed of in a safe and effective manner. The purpose of digestion is to reduce the amount of organic matter and the number of disease-causing microorganisms present in the solids. The most common treatment options include anaerobic digestion, aerobic digestion, and composting. Incineration is also used albeit to a much lesser degree. Sludge treatment depends on the amount of solids generated and other site-specific conditions. Composting is most often applied to small-scale plants with aerobic digestion for mid sized operations, and anaerobic digestion for the larger-scale operations. ANAEROBIC DIGESTION Anaerobic digestion is a bacterial process that is carried out in the absence of oxygen. The process can either be thermophilic digestion, in which sludge is fermented in tanks at a temperature of 55 °C, or mesophilic, at a temperature of around 36 °C. Though allowing shorter retention time (and thus smaller tanks), thermophilic digestion is more expensive in terms of energy consumption for heating the sludge. Anaerobic digestion is the most common (mesophilic) treatment of domestic sewage in septic tanks, which normally retain the sewage from one day to two days, reducing the BOD by about 35 to 40 percent. This reduction can be increased with a combination of anaerobic and aerobic treatment by installing Aerobic Treatment Units (ATUs) in the septic tank. One major feature of anaerobic digestion is the production of biogas (with the most useful component being methane), which can be used in generators for electricity production and/or in boilers for heating purposes. AEROBIC DIGESTION Aerobic digestion is a bacterial process occurring in the presence of oxygen. Under aerobic conditions, bacteria rapidly consume organic matter and convert it into carbon dioxide. The operating costs used to be characteristically much greater for aerobic digestion because of the energy used by the blowers, pumps and motors needed to add oxygen to the process. Aerobic digestion can also be achieved by using diffuser systems or jet aerators to oxidize the sludge. COMPOSTING Composting is also an aerobic process that involves mixing the sludge with sources of carbon such as sawdust, straw or wood chips. In the presence of oxygen, bacteria digest both the wastewater solids and the added carbon source and, in doing so, produce a large amount of heat. INCINERATION Incineration of sludge is less common because of air emissions concerns and the supplemental fuel (typically natural gases or fuel oil) required to burn the low calorific value sludge and vaporize residual water. Stepped multiple hearth incinerators with high residence time and fluidized bed incinerators are the most common systems used to combust wastewater sludge. Co-firing in municipal waste-to-energy plants is occasionally done, this option being less expensive assuming the facilities already exist for solid waste and there is no need for auxiliary fuel. CHAPTER THREE TERTIARY TREATMENT 3.1 SLUDGE DISPOSAL When a liquid sludge is produced, further treatment may be required to make it suitable for final disposal. Typically, sludges are thickened (dewatered) to reduce the volumes transported off-site for disposal. There is no process which completely eliminates the need to dispose of biosolids. There is, however, an additional step some cities are taking to superheat sludge and convert it into small pelletized granules that are high in nitrogen and other organic materials. In N

Saturday, October 12, 2019

Comparing Silkos Yellow Woman and Chopins Story of an Hour :: comparison compare contrast essays

Comparing Silko's Yellow Woman and Chopin's Story of an Hour In the stories "Yellow Woman" and "Story of an Hour", both women were under the subjection of men. They were depicted as weak, loving the men of domination, but wanting to escape the men's shadows. In Silko's "Yellow Woman", the confusing western-type setting of dry, hot alkali-white crust dirt, rivers, and horses with the contrast of modern day mentioning of trucks, schools, and jello set the tone. The narrator's desire to seek solace in her grandpa who was dead(191). But the next best thing was to seek comfort in his story that he liked to tell. Instead, the narrator placed herself in the story which she told to her family(193). The protagonist ,which is the narrator, was depicted as a weak, but sex driven woman. She was handled roughly by Silva due to his pinning her down (191) and threats of "you will do what I want"(190). She wanted to get away but chose not to leave. Silva was a man that spoke dictatingly and to the point. The protagonist in the story took pride in her lover Silva. She enjoyed his sexual encounters as well as his physical attributes. She also enjoyed the adventures of riding off with him to places where he went, but not knowing him for he was a stranger. The narrator was torn between the present ( husband Al, baby, grandma and mother) and the past (grandpa, story about ka'tsina spirit). The protagonist seemed to to enjoy being dictated what to do by Silva. The narrator and Silva seemed to be free spirits. They both loved adventure. But Silva was entitled to the right whereas Yellow Woman was no more than a weak follower with no say in the matter. The narrator and Yellow Woman felt that they had to be submissive to their men. The narrator's Indian background, Pueblo, seemed to be strict with the women expressing how they really feel to their husband. Also, the men seem to be honest since the narrator sopke "the men don't do things like that"(190). The narrator deserve to escape but she just took a walk along the river but she would eventually "come home"(191). It was strikingly interesting to see Al playing with the baby with no clue as to how the narrator was feeling. On the other hand, Chopin's The Story of an