Saturday, January 25, 2020

Maintaining Marine Reef Aquarium Essay -- essays papers

Maintaining Marine Reef Aquarium Important Aspects in Maintaining a Marine Reef Aquarium There is something fascinating and relaxing in having an aquarium in a home. Like a fireplace’s warm glow and bright colors, the colors that are emitted from an aquarium can be just as warm and even more colorful. From the slow and graceful movement of the fish to the frantic feeding frenzy, an aquarium is different each time it is viewed. Although a freshwater tank can be full or color, it does not come close to the fiery colors that are present in a marine aquarium. Unfortunately, all the color and life that a marine aquarium holds is much more fragile and not as easy to keep as a freshwater tank. Therefore, the marine aquarium requires a plethora of devices working together and at optimum levels to maintain a successful tank. Items like protein skimmers, ultraviolet filters, sump filters, reverse osmosis units, and even wave-makers are just a few of the devices that are required to properly maintain a marine aquarium. With the exception to a properly constructed tank, nothing is as important to the marine aquarium as the water within the tank and the lighting given its inhabitants. Since water is the medium that the aquarium inhabitants must live in, it is the most vital component in any tank. The quality of the water used will directly effect how successful the aquarium is. The chemical balance of the water must be watched closely. If the salt content varies too much, or harmful chemicals build up, the water will kill the inhabitants of the tank. Since fresh pure sea water is not readily accessible, the easiest water source for the majority of hobbyists is the faucet. However, the tap water that comes from the local water treatment plants may be safe for human consumption but is most likely toxic to marine life. Water treatment plants remove most of the harmful chemicals, but the water delivered is anything but pure. Often this tap water contains high levels of phosphates and nitrates that can be harmful to aquarium inhabitants. Also, copper may leach from pipes, and it is deadly to marine invertebrates (Goldstein 8). This leaves very few options for water to the hobbyist. One of the last, and probably the best option for obtaining a pure water source is by using reverse osmosis water. Reverse osmosis is a process of filtering ... ...k monitoring water conditions and lighting quickly becomes only a minor chore as the aquarium begins to regulate itself. Considering the amount of work and money a fireplace requires, the aquarium is a much easier and cheaper centerpiece that can be added to any room. It becomes a landscaping of art that even the best painters have difficulty capturing, and can be enjoyed by everyone. Works Cited Dakin, Nick, The Marine Aquarium Problem Solver. Blaksburg, VA: Tetra Press, 1998. Friese, U. Erich. Keeping a Reef Aquarium. Neptune, NJ:YearBOOKS Inc, 1996. Gamble, Sam. Light Energy 5 October 1999. Goldstein, Robert J. Marine Reef Aquarium Handbook. New York: Barron’s Educational Series, Inc, 1997. Larson, Scott. Personal Interview. 10 September 1999. Madison, Pieter. â€Å"You Can Succeed with Marines.† Tropical Fish Hobbyist. August 1999: 38-46. Paletta, Mike. â€Å"Water Changes.† SeaScope, Fall 1997, 3. Reefkeeper’s FAQ. 18 September 1999. Shimek, Ronald L. â€Å"So, You Want to Join the Marines.† Aquarium USA, 1999: 61-75. Tullock, John H. Natural Reef Aquariums. Shelborne, VT: Microcosm Ltd, 1997. Walker, Matt. Personal Interview. 20 October 1999

Thursday, January 16, 2020

Race and Ethnicity Essay

Race in America is one of those subjects that scholars rarely broach and are heavily criticized for these omissions by their constituents. For this reason, the subject of race and urbanization felt a proper choice for this final paper. Following, we will incorporate data from multiple sources including Khaled Hosseini’s The Kite Runner, a novel that examines the harrowing trials of different groups in Afghanistan and what happens to the ones lucky enough to escape the violence of their homeland into the safety net of American soil; in an attempt to show the inalienable link between race and urbanization. This discussion on urbanization and race in American will also include a brief discussion on classism. Classism is a part of the structural organization of society that can be measured as part of the contributing factors to the socioeconomic divisiveness experienced in this urbanized world. Some argue that gentrification, in all of its wonders is class based. Others argue it more a matter of ethnicity and race, both may be correct. Nevertheless, the issue of race, as aforementioned should be granted a closer look. By examining the ideas and experiences of anthropologists and sociologists past and present this paper will attempt to specify on how classism, racism, and urbanization are connected. Growing Cities and Ghettos The Industrial Revolution sparked an enormous wave of migrants and immigrants into American cities creating an urban ecology. Chapter 3 of the Giddens et. al. text, describes the social movement from Gemeinschaft to Gesellschaft; from a community based ideology in society to a more individualized world. Afghanistan is an agriculturally based society. Urbanization is a global process that draws people away from rural areas and into the cities. Once in those cities, people tend to gravitate to areas that are inhabited by people of their same cultural fabric. In discussing theories of urbanization, gentrification and displacement, John Bentacur (2010) in Gentrification and Community Fabric in Chicago points out how people are drawn to areas that have a cultural/ethnic connectivity, â€Å"immigrants with different characteristics compete for space until they get accommodated with alike others in locations that correspond to their competitive strengths† (p 384). In the novel, The Kite Runner, Amir and his father make the arduous migration from Kabul, Afghanistan to Fremont, California. Their low income neighborhood of Fremont is ethnically diverse but with a notable concentration of Afghani residents. It makes sense that when people leave their countries of origin to settle in a new place, they will be drawn to people and areas that are familiar to them. Even with familiarity problems arise, urban studies reveal several difficulties that plague densely populated urban neighborhoods; poverty, crime and dilapidated conditions to name a few. In Afghanistan Baba, Amir’s father, was rich and even wielded some power for being a respected business man and serving the community by creating an orphanage that would later be destroyed by the Taliban regime. In America, there would be no such accolades to speak of for their family. In fact, they would live in a type of poverty, they had never experienced nor hardly imagined. They would experience the existence that many black Americans face with no end in sight. A growing world population combined with globalization and the heightened mobility that comes with it has led to the creation of cities and a scramble for affordable housing. Gentrification also known as ‘urban regeneration’ or ‘re-urbanization’ is the process that happens in a community when it becomes urbanized and consists of the higher income families moving into lower income areas. During this process demographic changes are notable; in America, gentrification is notably marked by white families moving into black neighborhoods. Race and Ethnicity America is a multicultural nation. Our history of slavery created the black and white groups and the immigrant populations from around the world contributes to a high variety of culture and ethnic background. The macro-sociological issue of race and ethnicity has been the source of much debate and discussion. The reason for this is that the issue of race has been the root cause of social and political turmoil. Douglas Massey and Nancy Denton provide the backdrop in history when segregation by race was created in America in their book American Apartheid: Segregation and the Making of the Underclass. Massey and Denton edify that racial segregation was not always a fact of life in American society and that in fact; blacks and whites lived in close proximity to each other, albeit in the alley ways of the big homes occupied by their white neighbors, â€Å"industrialization in the north unleashed a set of social, economic and technological changes that dramatically altered the urban environment in ways that promoted segregation between social groups† (1993:19-26). Urbanization and technological advancement (causing blacks in the south to migrate to northern cities by the tens of thousands) would be the foundation for residential segregation where blacks and other minorities would be relegated to the outskirts of town. Black ghettos would remain isolated from society in a manner that was rarely, experienced by the European immigrants that came to this country during industrialization. Blacks and later, Latinos, would be destined to live isolated and neglected from social organizations and deprived from many of the benefits enjoyed by white communities with little hope of escape, â€Å"not only was the segregation of European ethnic groups lower, it was also temporary. Whereas Europeans isolation indices began to drop shortly after 1920, the spatial isolation characteristics of blacks had become a permanent feature of the residential structure of large American cities by 1940† (Massey and Denton 1993:57). In America, race and ethnicity is more clearly defined than in places like Afghanistan. According to data gathered from the PBS News Hour website, Afghanistan has nine different ethnic groups that reside in different territories of the country. They have fought and continue to fight civil wars, over culture (religion), legislative power and territory. Afghanistan and the U. S. are similar in their historical oppression of one ethnic group over another. In Afghanistan, the Pashtun/Sunni have for a long time ruled the land and claimed dominion over the Hazara/Shites. The Hazara group can be considered the equivalent to the Black demographic in America where historically they were the slave class, but are currently represented in government. Statistics In a rapidly modernizing world, Afghanistan is among the severely underdeveloped countries of the Middle East. As previously mentioned, Afghanistan is a multiethnic/multifaith, agriculturally based democracy, with a history of violence. And it perhaps it is this history, in addition to deep religious belief systems that have kept this land from joining the rest of the modern world. In reviewing the Millennium Development Goals indicators, data collected by the United Nations Statistics Division (UNSD), I reviewed several indicators that point to the fact that Afghanistan has a long road ahead. Afghanistan is making slow but sure progress trying to bring itself into a socially, politically and economically stable place. The first indicator measured the number of underweight children less than 59 months. The UNSD defines this indicator as a high number of moderately to severely underweight children, â€Å"whose weights for age are less than two standard deviations†. According to the report a healthy population will have 2. 3 percent of their children in this category. In 2004, 32. 9 percent of Afghanistan’s children were reportedly underweight, compared to 44. 9 percent in 1997. This indicator points to the poverty level and lack of nourishment recorded within a seven year period in Afghanistan. A second indicator measures women’s rights and representation in government. This indicator is defined as, â€Å"the portion of seats held by women in national parliament† increased from 3. 7 percent in 1990 to 27. 3 percent in 2006. The measurement was sustained through 2012 at 27. 7 percent. More work needs to be done and educating the population should be the place to start. Theological Link The Modernization Theory discussed in the text looks to explain the underdevelopment of countries like Afghanistan. Marx worried about capitalism and the effects it had on the lower-class population and thereby, the democratic process. Marx’s Conflict Theory dictates that societies are ruled by a small group of elite that create social order for the larger population. In this, we have the creation of divisions by class (division of labor), a central topic of discourse since the beginning of industrialized times. The French Revolution of 1787 (also known as the revolt of the bourgeois or middle-class society) creating capitalism and thereby usurping government power from monarchs. Karl Marx hated democracy. â€Å"Democracy is the road to socialism† (Karl Marx) Capitalism created tensions between the working and bourgeois classes. Summary Race and urbanization are indivisibly linked. Marxism and Class Conflict is the most applicable theory of today’s society. Considering the current events and status of world order, it is undeniable; capitalism continues to be the most powerful ideology in the world. The United States is a powerful country and the way it retains power is by unwaveringly maintaining capitalistic ideology and participating in global conflict around the world in defense of this ideology, â€Å"power, ideology, and conflict are always closely connected† (Giddens 2012:20). Societies are based on trust and these trusts are broken by the people that create and uphold unjust rules for the population of color and the poor. Works Cited. Betancur, John. 2010. â€Å"Gentrification and community fabric in Chicago. † Urban Studies Journal Foundation. Sage 48(2): 383 – 407. Retrieved from http://usj. sagepub. com/content/48/2/383 Giddens, Anthony, Mitchell Duneier, Richard P. Applebaum and Deborah Carr. 2012. â€Å"Introduction to sociology. † New York: W. W. Norton and Company. Eighth ed. , pp. 15-78. Massey, Douglas and Nancy A. Denton. 1993. â€Å"The construction of the ghetto. † Pp 17-59 in American Apartheid: Segregation and the Making for the Underclass. Harvard University Press. Retrieved from http://ereserve. baruch. cuny. edu.remote. baruch. cuny. edu/eres/coursepage. aspx? cid=3155&page=docs United Nations Statistics Division. (1991-2011) [Table Data on Gender Parity Index in Primary Enrollment retrieved November 5, 2012. ] Millenium Development Goals Indicators. Retrieved from http://mdgs. un. org/unsd/mdg/Metadata. aspx? IndicatorId=0&SeriesId=559 United Nations Statistics Division. (1991-2011) [Table Data on Gender Parity Index in Primary Enrollment retrieved November 5, 2012. ] Millenium Development Goals Indicators. Retrieved from http://mdgs. un. org/unsd/mdg/Metadata. aspx? IndicatorId=0&SeriesId=557.

Wednesday, January 8, 2020

Infectious Bursal Disease Recognized A Syndrome Essay

Epidemiology Infectious bursal disease recognized a syndrome, later termed Avian nephrosis on broiler farm near the community of Gumboro Delaware U.S.A. Avian nephrosis or Gumboro disease characterized by acute morbidity and mortality (Cosgrove and Lasher., 1957). IBD rapidly spread from farm to farm (Edgar and Cho., 1961). Early workers were also confused by simultaneous infection with a typical corona virus in flock affected by the infectious bursal disease agent (Winter field and Hitchner., 1962). The prevalence of clinical IBD was reduced following the introduction of live vaccines from 1966 onwards (Edgar and Cho., 1965). The syndrome Infection bursal disease has been designated for the first time instead of Gumboro Disease when describing specific pathogenic lesion in the cloacal bursa (Hitchner., 1970). IBDV infection at early were immunosuppressive. Additional protection was provided to broilers and commercial pullets when inactivated emulsified vaccines were administered to parent flock to increase transfer of maternal antibodies to progeny (Allan et al., 1972). Control of IBD viral infection has been complicated by the recognition of variant strains of serotype I of IBDV that were found in Delmarva poultry producing area (Rosenberger et al., 1985). Variant strains as breaking through maternal immunity against standard strains and also differs fromShow MoreRelatedInfectious Bursal Disease Recognized A Syndrome Essay2028 Words   |  9 Pages Infectious bursal disease recognized a syndrome, later termed Avian nephrosis on broiler farm near the community of Gumboro Delaware U.S.A. Avian nephrosis or Gumboro disease characterized by acute morbidity and mortality (Cosgrove and Lasher., 1957). IBD rapidly spread from farm to farm (Edgar and Cho., 1961). Early workers were also confused by simultaneous infection with a typical corona virus in flock affected by the infectious bursal disease agent (Winter