Four Procedures Commonly Used in Refractive Eye Surgery Essay examples

Four Procedures Commonly Used in Refractive Eye Surgery One of the first things put on in the morning and one of the last things taken off in the evening, glasses and contacts play a large part in the everyday lives of those who depend upon them to see clearly. These two types of corrective lenses allow for clearer vision, but glasses and contacts are also inconvenient. Sports, especially contact sports, are more difficult to play when glasses get in the way or break. For those who can wear them, contacts are an improvement over glasses; wearing contacts for 18 hours a day, however, is not healthy for the contacts or the eyes. Therefore, other methods are desired to correct vision. Ophthalmologists have long dreamed of equipment and techniques to permanently correct refractive problems. For more than 100 years, doctors have been exploring the use of surgery to reduce or eliminate patient's dependence on glasses and contacts ["Refractive," 1997]. This dream came true with the introduction of refractive surgical techniques for the correction of myopia and astigmatism. In refractive surgery, various micro-surgical procedures are used to re-shape the front surface of the cornea. Four main refractive eye procedures are clinically being studied: radial keratectomy (RK), automated lamellar keratoplasty (ALK), photorefractive keratectomy (PRK), and laser in-situ keratomileusis (LASIK). These four common procedures in refractive eye surgery will be compared and contrasted while taking into account the limitations of comparison such as the patient and the extent of the correction needed. Function of the Eye The human eye is a complex organ with a primary function of focusing light on the retina to provide the sense of sight f... ...ctive and Corneal Surgery (Boston: Little Brown and Company, 1996), pp. 10-120. "Laser Eye Center," http://www.lasereyecenter.com/ (Madison: University of Wisconsin, November 1997). McFadden, Murray, Dr. "Laser Eye Surgery, PRK, LASIK," http://www.prk.com/ (Madison: University of Wisconsin, November 1997). Raeburn, Paul, "Keep Your Eye on the Laser," Business Week (30 September 1996), p. 40. "Refractive Surgery Frequently Asked Questions," http://www.isrs.org/library/faq (Madison: University of Wisconsin, November 1997). Sanders, Donald, Radial Keratotomy (Thorofare: SLACK Incorporated, 1984), pp. 1-16. Sulting, Dr., "Laser In-situ Keratomileusis (LASIK)," http://www.emory.org/vision_correction/ (Madison: University of Wisconsin, November 1997). "Understanding Laser Vision Correction," pamphlet (USA: The Laser Center Inc., 1997), pp. 7-43.

Investigate whether firelighter, wood, ethanol, paraffin or wax contains the most energy :: GCSE Chemistry Coursework Investigation

Investigate whether firelighter, wood, ethanol, paraffin or wax contains the most energy Energy In Different Fuels Aim: I am going to investigate which fuels contain the most energy between; firelighter, wood, ethanol, paraffin and wax. Prediction: I think that the fuel that contains the most energy is the one that produces the highest rise in temperature of the water. I know this because†¦ Heat + fuel + oxygen => CO2 + H20 + energy. The energy realised is heat and light energy, which is dependent on the chemical potential energy in the fuel. The greater the chemical potential energy the more energy is transferred as heat and light; the greater the rise in temperature. And because of the fire triangle: tri2.gif (22406 bytes) Apparatus: List: Stop watch Thermometer Splint Clamp Matches Boiling tube Heat proof mat Fuels: Firelighter, Wood, Ethanol, Paraffin, Wax. Method (Preliminary test): first of all, I will make sure I take all of the safety precautions, I.e. tie back long hair, use goggles and make sure the room is well ventilated. Secondly I will set out the apparatus and get all the equipment from the list (shown on the previous page). Using the measuring cylinder, I will put 20cm3 of distilled water into a boiling tube, and take the starting temperature. In order to make this a fair test I will burn the fuel for one minute only, use 20cm3 of water and make sure the tip of the fuel’s flame is under the boiling tube. After the minute is up, I will blow out the flame or place the lid of the fuel over it, (cutting off the oxygen). I will then take the finial temperature. Then I will repeat the experiment for the other four fuels, in order to establish which two fuels produced the highest rise in temperature of the water. Method - Comparison: I will then compare these two fuels by heating them until they get to a certain temperature noting down the time every time the temperature increases by 10 °C in order to form a scatter graph using line of best fit. I will use step one and most of step two from the preliminary test (first of all, I will make sure I take all of the safety precautions, I.e. tie back long hair, use goggles and make sure the room is well ventilated. Secondly I will set out the apparatus and get all the equipment from the list (shown on the previous page). Using the measuring cylinder, I will put 20cm3 of distilled water into a boiling tube,) I then heat the water using the first fuel until it rises to 100 °C, noting the time every 10 °C starting from 20 °C.

First Communion Toast Essay

Ladies and Gentlemen, It is a real pleasure to have you all here to share and celebrate in this very important occasion of her life, the FHC of our darling Anishka D’ Souza. I feel privileged to be the uncle of such a lively and smart child Anishka. Anishka has waited a long time for this day. Today is one day Anishka will cherish and remember for the rest of her life. It is a day when we all celebrate Anishka’s commitment to our Catholic Faith in the presence of those who care most about her. So let us congratulate Anishka on this very special day, when she has received our Lord for the first time in communion and let us wish her all happiness in her Catholic life from this day forward. Ladies and gentlemen, please rise and raise your glasses to join us in toasting to Anishka. Dear Anishka, from the bottom of the hearts of all who are present here and those who could not make it and those who are not here to make it, especially your late abba Oswald, Aunty Rosemarie, Uncle Arun who are joining this graceful occasion and sending their blessings upon you from heaven: For Your First Holy Communion, dear Anishka May God grant you always, A sunbeam to warm you A moonbeam to charm you A sheltering angel so nothing can harm you Laughter to cheer you Faithful friends to surround you loving parents to protect you And when you pray, Heavens listen to you. We love you, Anishka! God bless you mightily. A whole new world unfolds before you from this day on. Let the faith in your heart, always be your guide. Congratulations on the most sacred of new beginnings

Socius Meaning And The Neighbor

The socius and the neighbor are two ways of relating with others. The socius pertains to the relationship with a group or a person through social function. In my understanding, this is a functional kind of relationship based on one’s label such as a student, for example, for being a part of an organization. Thus, in other words, the socius is the arbitrate relationship I have with others. The neighbor however, is a personal way of encountering the other as a person. It’s a relationship that develops deeper in degrees. It usually starts from an initial encounter that develops into a higher level of intimacy. Therefore, the neighbor is the abrupt relationship with others. On The Level of Astonishment: In the parable of The Good Samaritan, the Levite and the priest were surprised by the event they encountered before them but since they had a prior commitment and being a responsible member of an institution, they were unavailable to entertain the man. The traveler however did not have any institution to answer to which makes him available for the man in need. Through the encounter, the traveler became present to the man. His behavior is his natural character because he’s doing such an act without an institution being a catalyst. The Last Judgment on the other hand unveils the prophecy regarding the encounter of the Samaritan with the man. It is astonishing for the Samaritan to know the meaning of his simple, compassionate act. The Samaritan symbolizes the great acts of humans and encounter Christ in a way. Through this the message â€Å"Go and do likewise† is made known. On The Level of Reflection: There is no such thing as a â€Å"neighbor† if we base it on Sociology because according to its definition, Sociology is the systematic study of the development, structure, interaction, and collective behavior of organized groups of human beings. That is why in this point of view, the neighbor is called a â€Å"man of regret, dreams and myth† meaning it doesn’t exist. The socius would refer the neighbor as outdated. The parable of the Good Samaritan would bring us to the reflection that if there are no beggars to be given charity in the future where humankind will no longer suffer or experience hunger, because of men’s ability to evolve technology, then there’s no place for a neighbor. People will be a part of an association and the parable and the prophecy will have lost its meaning. This would bring us to the understanding that the socius is the â€Å"man of history† meaning he can mold the olden times. On The Level of Meditation: Both the socius and the neighbor are two dimensions of relating with others, an encounter. It shows how human relationship is in the current society. The neighbor is the private relationship we share with others and the socius is the publicity we make with our colleagues. In reality, there is no safe abode in our private lives without the protection of a public administration. Therefore the neighbor emerges from the socius. But also, man is awakened when he is socially stripped. Charity is humble. It is the common intention of the socius and the neighbor, their common ground. The socius and the neighbor are the two faces of charity. It is charity that gives meaning to the social interaction and to the event of the encounter. An encounter is not dependent on history with its disputation between the socius and the neighbor. But history ropes the extent of charity.

American Indians

American Indians is a term that is used to refer to people whose have Indian roots but are American citizen or live in America. This citizenship is a result of early migrations of people from their mother land in search of greener fields in the United States. However, these people were not appreciated by indigenous Americans in the 18th century since they were seen be inferior compared to indigenous Americans. Short essay 1 The long term study preferred by social cultural anthropologist can be the most effective in deciding someone’s culture.This is because a long term study would address changes that occur in long period of time in a society. Cultures do change with time and so along time study could be used in solving this. This experience that is gotten in the field makes the anthropologists come into direct contact with the issues in the society and this makes them write exactly what is on the since they experience it themselves. It’s worthy noting that this approac h is totally different from that used by a journalist or a historian.Historians and journalists do not get into that direct contact with the society and so they do not get the real idea like the anthropologists. Journalist’s historians do not spend much time studying the cultures of a particular society and in most cases they study or rely on the findings of other people. Short essay 2 According to Horseman the new racial ideology of the 19th century are racial ideologies that are supported by the principles of free democratic republicanism other than innate superiority of the American Anglo-Saxon group of people who were of Caucasian race.The previous ideologies placed American Anglo-Saxons a class above other races and they believed that they were destined to bring good governance, commercial prosperity as well as Christianity to America and to the world at large. This meant that the other races were inferior and they were reduced to a subordinate status failure to which th ey were faced with a possibility of racial extinction. This new racial ideology was very different from the earlier Euro-American view of Indians. Previously, both American and Europeans took some races to be superior to others for different reasons.These reasons included biblical theories and they followed these theories despite their inconsistencies and their contradictions since they believed that they had a special continental and world mission to accomplish as a race. Both Americans and Europeans both shared a belief in the political and individual freedoms as well as a need for uniqueness in language and racial origins unlike the new racial ideology which advocated for free democratic republicanism. In the 19th and 20th century, these views towards American Indians did not change either since they were subject to enslavement.At this time, many social scientists thought that native people were inferior to the Native Americans and so were subject to them and they went ahead to p rovide the much needed scientific proof for racial distinctions. During this time also, many government officials too felt that it was the descendant of the Anglo-Saxons who played great roles in the establishment of free government and hence the justification for their superiority altitude. Due to this, the government passed policies that bound the immigrants to conform to the prevailing political, economic and social systems .These new polices from the American government led to the justification of sufferings and deaths of blacks, Mexicans and even Indians since any feelings of guilty which would come afterwards could be assuaged by assumptions of both historical and scientific inevitability. The general public also felt that Americans were the people who were destined to shape the destiny of the world and the other races were inferior and were doomed to permanent subordination or risk facing extinction. Lastly it’s worthy noting that the representation of native people he ld by social scientists, early anthropologists, the U.S. government, and the American public are not contradictory since they seem to place them high above all the other races in all aspects of life. Short essay 3 The Indian country is today faced with an uphill task of determining who true Indians are and who are not. This task has not been easy since it has been surrounded by a lot of controversies. Many criteria’s have been proposed as the best to apply when determining who the true Indians are. First, there are those who believe that the true measure of how Indian one is through the amount of ‘Indian blood’ in them.This criteria has been largely criticized since some people argue that there no true measure of the Indian blood that is present in someone since there are people who are born of one Asian parent while the other parent is from anther ethnic group. Secondly, there are others who believe that the true marker of a true Indian identity should be geneal ogy, private property and competence in civilization. This group of people argues that the true evidence of a true Indian should be based mostly on shared history between a person and other people who are known to be of an Indian background.Social ties with people from Indian or who have Indian blood in them could be acceptable as a true claim to one being an Indian. This means that one needed to trace his ancestors and prove that his roots are Indian by tracing his ancestors. Attachment to Indian culture was proposed to be criteria too for determining who true Indian was. This required someone to be aware of all cultural believes and behaviors of the Indian people. Early practices like hunting and others were argued to be very effective criteria for identifying who real Indians were.The ability to communicate in traditional Indian language was also advocated for by the people who shared this view. This controversy in the best criteria for separating true Indians and fake ones has b een a big challenge to the Indian country since there still need for identifying who the true Indians. The American government is responsible for determining whether one is an American Indian or a Native American. The blood quantum criterion is used by the American government in the administration of Indian schools and land allotments.In census reports, this method of separating Indians and non Indians is applied. The society also can decide who a true Indian is through the application of cultural believes of indigenous Indians as well as their life styles. Scholars have not been left behind either and they too can use their knowledge and principles to differentiate between the two. The federal government of America uses several methods in determining whether someone is a Native American or not. Blood quantum is one of these criteria’s and it applies the idea of determining how much of American blood a person has in their body.In America, there is a settlement that is set asi de for people of Indian origin. Any new person who may claim to be an Indian must have a proof of relationship with the already settled Indians in this land allocated to people of Indian backgrounds. The ability of some one to speak in Indian language and display cultural practices of Indians are acceptable by the federal government as true claims for an Indian. These criteria’s that are used by the government are not very different from those used by Native Americans in determining who a true Indian is.To begin with, the native communities look mostly at the cultural connection between a person and the community in question. This criterion requires someone to practice Indian cultural practices and have some ties with well known Indian families. Physical appearances as well as the ability to communicate in Indian languages are used too. Non-native Americans on their side, identify the native ones by the kind of lifestyles they lead. The language they communicate in as well as their accent too. This identity of ones race is very important in many ways.First, it’s used by the federal government in allocation of many services like education and social welfare. All these efforts in trying to determine who true Indians are pits at risk the identity of persons who are of a mixed ancestry because it makes them feel that they belong nowhere. All socialcultural anthropologies ideas have not offered any solution to solve this problem. People may have mixed ancestry hence making it hard to pick out their true identity. References 1. Deloria, Vine (1969) Custer Died for Your Sins: an Indian Manifesto, New York: Macmillan.2. Calloway, Colin G. , (1995) The American Revolution in Indian Country: Crisis and Diversity in Native American Communities ,Cambridge University Press 3. O’Donnell, James, (1973) Southern Indians in the American Revolution ,University of Tennessee Press 4. Hirschfelder, Arlene B. ; Byler, Mary G. ; & Dorris, Michael (1983) Guide to research on North American Indians, American Library Association 5. Johnston, Eric F. (2003). The Life of the Native American. Atlanta, Tradewinds Press 6. Jones, Peter N.(2005 Respect for the Ancestors: American Indian Cultural Affiliation in the American West, Boulder, CO: Bauu Press 7. Nichols, Roger L. (1998) Indians in the United States & Canada, A Comparative History, University of Nebraska Press 8. Snipp, C. M. (1989). American Indians: The first of this land, New York: Russell Sage Foundation. 9. Sturtevant, William C. (Ed. ). (1978) Handbook of North American Indians , Smithsonian Institution 10. Tiller, Veronica E (1992) Discover Indian Reservations USA: A Visitors' Welcome Guide. Council Publications, Denver, Colorado

Andrew Jackson Democracy

Andrew Jackson and his supporters have been criticized for upholding the principles of majority rule and the supremacy of the federal government inconsistently and unfairly. The validity of this statement varies in the cases of the re-charter of the Bank, the nullification controversy, and the removal of the Native Americans. In the case of the re-charter of the bank, the statement is not valid. He did uphold the principles of the majority rule and not of the supremacy of the government.The bank and its branches received federal funding and they were to be used for public purpose by serving as a cushion for the ups and downs of the economy. Biddle, head of the bank, managed it effectively. But his arrogance led many, including Jackson, to believe that Biddle was abusing his power and was serving the interests of the wealthy. As a result, Jackson declared the bank to be unconstitutional even though it was previously said to be constitutional.In the election of 1832, Clay wanted to cha llenge Jackson on the issue by trying to persuade Congress to pass a bank re-charter-bill. Jackson vetoed it, saying that it was a private monopoly and that it favored the wealthy, and in turn led to the backfire of Clay’s plan. The majority of the voters agreed on his attack on the â€Å"hydra of corruption. † And as a result of this issue, Jackson got the majority of the votes and won the election. In his second term Jackson killed the national bank by vetoing its re-charter and by removing all of its money.In his veto message Jackson said â€Å"But when the laws undertake to add to these natural and just advantages artificial distinctions, to grant titles, gratuities, and exclusive privileges to make the rich richer and the potent more powerful, the humble members of society who have neither the time nor the means of securing like favors to themselves, have a right to complain of the injustices of their government†. He then took the money and put it into so c alled â€Å"pet banks† that were located throughout various state banks. He did this because he did not uphold to the ideas of the federal supremacy.Jackson is usually for state’s rights, but not if it leads towards disunion. That is exactly what happened in the issue of nullification. Around 1828 the legislation of South Carolina declared that the Tariff of Abominations, which was and increased tariff, was unconstitutional. According to Calhoun, Jackson’s vice-president, and his nullification theory, each state had the right to decide whether or not to obey it or to declare it void. Daniel Webster, of Mass. , debated against Hayne and attacked the idea that any state could leave the Union.Jackson believed that the Union should be preserved. South Carolina held a convention to nullify both the tariff of 1828 and the newly formed tariff of 1832. The convention determined that the collection of tariffs within a state is against the constitution. Jackson didnâ€⠄¢t like this, so he forced military action by persuading the Congress the pass a so-called Force bill to give him authority to use military action in South Carolina. But the troops did not go. Jackson decided to open up for compromise and to lower the tariff.Jackson did not uphold to the principle of majority to rule in this case because it only dealt with one state, but he did for the supremacy of the federal government. In the case of the removal of the Native Americans, the statement is valid. Jackson’s view on democracy did not extend to the Native Americans. Like the majority he did sympathize with the land-hungry citizens who desperately wanted to take over lands held by the Indians. Jackson thought that the reasonable answer was to require the Native Americans to leave their homeland and head towards west of the Mississippi.He signed the Indian Removal Act in 1830, which forced a resettlement of many thousand Native Americans. In 1831 the Cherokees challenged Georgia in the courts, but the Supreme Court ruled in this case (Cherokee Nation vs. Georgia) that the Cherokee’s where not a foreign nation and couldn’t sue in a federal court. In a second case, Worcester vs. Georgia (1832), the Supreme Court ruled that the laws of Georgia had no force within the boundaries of the Cherokee territory. In a dispute between state’s rights and federal courts, Jackson sided with the states.He said, â€Å"John Marshall has made his decision, now let him enforce it. † In a statement by Edward Everett, he said, â€Å"The Indians, as was natural, looked to the United States for protection. They came first to the President, deeming, and rightly, that it was his duty to afford them this protection. They knew he had but one constitutional duty to perform toward the treaties and laws – the duty of executing them. He informed them that he had no power, in his view of the rights of the States; prevent their extending their laws over th e Indians. This shows that he upheld the principle of the federal supremacy because he abided. Many presidents that have served in the U. S. have had criticisms against them because of the actions they have performed, Jackson being one of them. The validity of the criticism against Jackson varies with the issues regarding the re-charter of the bank, the nullification crisis and the removal of the Native Americans. His presidency changed the way that we look at presidents today.

Main topic is Markets Term Paper Example | Topics and Well Written Essays - 2250 words

Main topic is Markets - Term Paper Example This abrupt actualization of counterparty accident has artlessly arctic the markets beyond the western countries. With no bank adventuresome abundant to accommodate to other banks, deleveraging has larboard its blister on the market: affairs of assets in wish of capital leads to abatement in prices to even lower levels, which agency added and added charge for beginning capital. This has acutely added anchored lending to absolute economy-producers and consumers-which agency abatement in investments by businesses and bead in demand. This has added slowed down the advance of the economy. As advance drops, businesses are abiding to aim at cost-cutting exercises, which agency layoffs. The confused consumers will further abate their spending. That is how the financial crisis is feared to advance itself to the Wall Street-the absolute economy (Brown P, p. 105, 2005, Journal of Financial Economics). In the light of these, this paper deals with one topic entitled ‘new expectations in th e U.S. Market’ in detail and three other related topics as subtopics. The morphing of the financial hailstorm, which started about 18 months aback as the US subprime crisis, into bread-and-butter arrest is all but over: consumers are arise beneath the burden of non-availability of acclaim on the one hand, and abrupt abatement in application on the other (R.T. Baillie et al, p. 23, 1996, Journal of Applied Econometrics). To arrest the further spread of economic crisis and its intensity, the central banks and governments on either ancillary of the Atlantic accept redoubled their efforts, with bolstering from banks, by pumping in added capital, accouterment greater budgetary bang to jump-start the economy, and cut absorption ante added down. Of course, action moves are accepted to crop after-effects alone afterwards a time lag. In the US, capital injection conceivably adored the banking system, but its non-banking area