How Aerial Travel and Cabin Pressure Adversely Affects the Human Body Essay

The idea of humans traveling to the Moon or other areas out side of the Earth’s orbit is mostly scientific. However, when astronauts remain in space, having to re-balance the body to suit less or no gravity compared to the Earth could bring about many changes to the body. Scientists have found that the time required for recovery depends on the time spent in zero-gravity conditions. The longer one stays off of the Earth’s surface, the more damage can be caused. Strictly speaking, even a trip in an Airplane would require safety precautions to minimize damage to the body of this. For example, cabin pressure increased to maintain balance and prevent feeling different to a lower pressure. This essay will consist of two sections. The first will be of flight effects within the Earth’s hemisphere, and how to perhaps prevent damage to the body. The second, and longer section deals with space travel through Zero-gravity and effects of weightlessness on the body and the cou nter-measures to prevent damage to the body. Section 1, flight effects on the passengers, specifically dealing with cabin pressure: Airplanes fly at the cruising altitude of around 33’000 feet, or approximately 10’000 meters. Because the cruising altitude has a cabin pressure lower than air pressure on ground or even under sea-level, the oxygen availability is less and gases within the body expand. This causes the oxygen saturation level of the blood to reduce, which can lead to mild hypoxia, the reduced supply of oxygen to the tissues around the body. Due to the effects of hypoxia, alcohol consumption would affect the brain much more than it would on Earth. As the aircraft makes its decent back to Earth, air must be allowed to flow into the middle of the ear to equalize pressure differences. Passengers often can feel this change in air pressure. People with ear, nose and sinus infections are usually advised to avoid flying because of these changes in air pressure. Air travel in airplanes has less thank 20% humidity. This causes discomfort to the eyes, mouth and nose but does not risk the passenger’s health. This discomfort can be prevented by drinking liquids (water recommended) before and during the flight, and using skin moisturizers. Also passengers with short-sightedness or long-sightedness are advised to wear eye-glasses rather than contact lenses during flight as the contact lenses may dry out. In order to avoid de-hydration, passengers should drink non- alcoholic beverages. Section 2, how traveling through space affects humans Astronauts often experience â€Å"Zero- Gravity† during their travels through space. This zero gravity or micro gravity can bring about health concern to the body if astronauts remain in space for a long period of time. It would be much healthier for crews to live under artificial gravity. In order to prevent any biological changes in the body when experiencing zero gravity, scientists recommend a force of artificial gravity equal to a third of the Earth’s level of gravity. However, scientists still haven’t research affects of artificial gravity on humans but they know for a fact and there is an imbalance in the body due to the shifts of gravity levels. Artificial gravity prevents physiological changes from occurring. In zero-gravity, the body deteriorates. It takes less muscle to move around, so after a long period of time in space, muscles weaken so the body bends. Because there is no tension in space, muscles relax and after a while they atrophy as a result of disuse and eventually disappear. To prevent the fracture of bones, limbs and muscles, all space shuttles give the opportunity for astronauts to do rigorous exercise everyday to keep the muscles strong. Staying in Zero-gravity for months causes bones to lose mass and get thinner, as they are not carrying any weight. This means astronauts must go through rigorous trainings in the spacecraft everyday in order to keep muscle and bone strength. â€Å"When a great deal of the crew’s precious time in space is spent exercising rather than doing science, money and potential knowledge are being squandered for the sake of health. It is a sacrifice, but a necessary one1† In space, receptors in the inner ear allow humans to sense direction. In space, ear receptors don’t receive the same cues and the mind gets used to ignoring the inner ear’s feelings about balance. Hand-eye coordination, posture and balance are all affected by the disorientation of the mind. When astronauts return to earth, they are often â€Å"overwhelmed by dizziness† and have difficulty in maintaining balance. An example of the mind adapting to the new gravity less surroundings would be with Shannon Lucid, who was on board the Russian space Station MIR for six months. The astronaut said â€Å"You just sort of get used to floating around† but we also know that floating around is not all that astronauts do- they must resist the effects of micro gravity on the body. Also, no gravity means no resistance from growing, so some astronauts return to earth some 6 inches taller than when they left. It is only after a few months that they grow down/ shrink back to normal height. This is because of the unloading of spinal discs- because of lack of gravity, the discs in the spine are not holding up or don anything, so they tend to stretch rather than contract. Traveling through micro gravity causes bodily fluids to shift from the lower body to the cephalic area (head), and so people’s faces tend to swell and become rounder than they are on earth. When the brain senses a higher amount of blood than usual, it interprets the situation that there is now an overall increase in the total volume of fluids in the body. The brain responds by triggering the excretion of fluids, making astronauts prone to dehydration. Also, the fluid redistribution can shrink legs as the bones are weaker. These fluids pass through the kidneys, causing kidney filtration rate to increase, bone loss can cause Kidney stones. Fluids that leave the body include calcium loss and bone demineralization. The loss of blood plasma causes temporary Anemia upon the return to Earth. Some crew members get â€Å"space anemia.† Scientists are concerned about the affects of catching this disease on over all crew performance. Blood volume may decrease by 10 percent. The increase of fluids in the head causes the same feeling as when one has a cold and feels blocked in. in space astronauts begin to lose their sense of taste, causing the craving for strong flavorings in the food such as horseradish, mustard and taco sauce. Fluid loss, lack of exercise and diminished appetite cause weight loss as astronauts tend not to eat as much as they would on earth. Meals and exercise are planned to prevent excessive loss. Zero-gravity affects the cardio-vascular system. On earth we must cope with gravity, which sustains or slows down the blood-flow. In zero gravity, there is no gravity force, causing the heart to slow down due to the decreased demands of blood as it travels more freely. The immune system in the body is also affected by weightlessness. In space, one is exposed to illness as the immune response lowers and numbers of anti-bodies decrease after a long exposure to micro gravity. Approximately half of all astronauts are affected by this unpleasant syndrome which affects nausea, headache, lethargy and sweating (taken from NASA sources). Also, minor effects of weightlessness on the body include puffiness in the face, flatulence, weight loss, nasal congestion and often sleeping disturbances. Upon returning to earth, recovery time depends on the duration of stay in space. Muscles are weak and the body is not used to gravity forces, (causing them to feel dizzy) and so some astronauts are taken back in stretchers. This shows why astronauts need to be â€Å"at the peak of fitness.† If in the near future the human race would build space stations as tourist resorts, some would prefer hotels with zero-gravity and some would want partial gravity, which would bring about competition like hotels on earth, which would drive prices low. As gravity affects all biological, physical and chemical processes on earth, building an International Space Station gives new opportunity to study a world without gravity and its affect on animals and other living organisms. Observing the weightlessness effect on these living organisms could teach scientists about biological processes on earth, such as aging and osteoporosis. In the end, we can see that human travel through space is safer under artificial gravity when compared to astronauts being exposed to weightlessness, micro gravity or zero gravity (all three mean the same). Most of the problems mentioned such as fluid loss and muscle deterioration would not cause problems as long as the crew remained in a weightless environment. Remaining in a zero-gravity environment for over a long period of time could cause problems, however. In 1987, in the later stages of his 326-day mission, Russian Yuri Romanenko was fatigued both physically and mentally due to traveling through space. The majority of his day was spent sleeping regaining strength, in the meantime his bones were deteriorating. Some say if many like Romanenko stayed in space for much longer, he may not have survived re-entry to the Earth. Returning to Earth could cause problems as the body is much weaker due to demineralization and atrophy of the bones and shortage of red blood cells. Oneâ€℠¢s balance must now again be readjusted causing many astronauts to feel dizzy when back to a strong â€Å"g† force gravity on earth. Whether or not the large amount of time and money spent on keeping astronauts fit during space flight is worth the scientific findings is debatable. Physiological effects need to be prevented as much a possible. Again, this is usually prevented by rigorous exercise and micro gravity could still be a danger to the astronaut’s health. Many scientists believe that the benefits of transporting/sending out machines (robots) and humans to space, despite the health issues, are nothing compared to the huge benefit that society will receive. Humans will not be perfectly suited to living in a weightless environment, but that won’t stop Astrobiologists and many other research firms like NASA from exploring space. The many benefits of space exploration such as technological knowledge and inspiration easily outweigh the negative aspects. Bibliography: Sources were from Newspapers, CDs, web sites and a large extract of a book in one of the web-pages. Most web sites accessed on the 11th December 2003 and 9th January 2004. 1) http://library.thinkquest.org/C003763/index.php?page=adapt02 2) www.permanent.com/s-nograv.htm 3) http://library.thinkquest.org/C003763/index.php%3fpage=adapt02 4) www.spacefuture.com/habitat/zerog.shtml 5) http://mos.org/cst/article/77/6.html 6) http://school.discovery.com/schooladventures/spacestation/basics/why.html 7) www.relaxincomfort.com/zerogravity_benefits.html 8) http://experts.about.com/q/2540/2677459.htm 9) www.uclas.ac.uk/facs/science/physastr/courses/space/ssyear1/sc1201.htm 10) http://www.who.int/ith/chapter02_01.html 11) Definitions from Microsoft Encarta 2003 Premium Suite CD 12) http://library.thinkquest.org/2606/Environmental_problems/water_pollution_-_effects.html (used for first idea of project) 1 http://library.thinkquest.org/C003763/index.php%3fpage=adapt02

The Great Gatsby Final

In the novel The Great Gatsby, each heartache has very distinctive characteristics; all has life goals and dreams, and played an irreplaceable role in the novel. At first glance, the protagonists and antagonists are clear to see. One would place Jay Gatsby as the good guy, the one who has American dream, and who is a hopeless romantic who believes in everlasting love. For Daisy and Tom, they are definitely the antagonists, the bad ones, the one who tore Gatsby dreams and hopes apart.Nick on the other hand, has a great transformation throughout the novel; being the narrator of the novel, he seemed to have a fairly good view n himself while he's narrating the story'. Nevertheless, as the novel progress, there are parts and bits that could reveal how he may not be who he claimed to be. This paper would focus on the two characters, Nick Caraway and Daisy Buchanan. Their character will be viewed in an objective way, and attempt to see deeper into their life and why they did what they did. In the end, eventually find out whether they are actually the bad or good guy that people tend to view them, or perhaps there's something more to them. L. Nick Caraway: The narrator of this novel is Nick Caraway, a man who grew up in family of prominent, well-to-do people† in Chicago; he is a Yale graduate, loves literature and even considers himself as a â€Å"well-rounded man†. After he fought in the World War I, he joined the prosperous and fast-growing business world in New York.Somehow, he is the cousin of the tremendously wealthy Daisy Buchanan, and a college acquaintance of Tom Buchanan, they lived a luxurious life that was completely opposite of his. Being the narrator, it is easy to believe everything that he said, but there are signs that could show that he is not as simple or positive as he pronounce to be, as Peter L. Hays aid in his paper, Initially Nick's father tells him that â€Å"all the people in this world haven't had the advantages you've had† , presumably material advantages.But Nick interprets the statement to mean â€Å"a sense of fundamental decencies is parceled out unequally at birth†, something very different, and a belief that qualifies Nick very much as a snob. In the novel, Nick is a tolerant and open minded listener, and highly educated so is also an intellectual, people felt the urge to confide to him and trust him. However, while Gatsby made up his past and have illegal business in his present life,Nick's family also did something similar; they earn their money by selling hardware but cover it up by saying that they have ducal blood. When he describes his own house, he said his house is a â€Å"small eyesore,† and gives him â€Å"consoling proximity of millionaires. † Though sounding somehow self- mocking, he might actually feel like being near to the rich does make up for his own living standards, as if lying about his background and living next to the rich could take up closer to being one of the people in the high society.Nick's true thoughts over the rich and himself were never clearly identified, UT it seems possible that he does want to fit into the complicated high society, despite the fact that he views himself as morally more advance than all the rest The readers learn more about his personality by the way he speaks and how he described the others as the novel progress.Nick calls himself â€Å"one of the few honest people that I have ever known† In the beginning of the novel, he claimed that he would reserve all judgments while interacting with others, as quoted from the novel: â€Å"Whenever you feel like criticizing any One,† he told me, â€Å"just remember that all the people in this oral haven't had the advantages that you've had. † He didn't say any more, but we've always been unusually communicative in a reserved way, and I understood that he meant a great deal more than that. In consequence, I'm inclined to reserve all judgments [†¦J. In the above passage, Nick said that he would reserve judgment on all things, but throughout the novel, he seems to be making personal remarks on the other characters. For example, he said his gracious next door neighbor Jay Gatsby is â€Å"unaffected com†, and the Buchannan couple were â€Å"careless people†; even said that his lover Jordan Baker is â€Å"incurably dishonest. Nick is not only the righteous and objective narrator who he claimed to be, he is also someone whose sight is muddled by the lavish life Of the rich and famous.His internal conflict over the lifestyle of his new life in New York goes on throughout the book, and is especially represented by his romantic relationship with Jordan Baker. He is in love with her energy and sophistication, but he is repeatedly disgust by her carelessness and dishonesty. Towards the end of the novel, Jordan said, â€Å"You said a bad driver was only safe until she met another bad driver? Well, I met another bad driver, didn't l? I mean it was careless of me to make such a wrong guess. I thought you were rather an honest, straightforward person. Thought it was your secret pride. Perhaps in the end, the ones who seem the most trustworthy is the one that should not be trusted at all. I. Daisy Buchanan Daisy Buchanan is an interesting character to kick at. In common day terms, some people might view her as the head cheerleader who married the quarterback of the football team, a shallow beauty who cares about nothing but the superficial, money and good looks. Not exactly a scheming gold- digger, since she is already from the elite social class and has incredible lath of her own, but like what she said she wished her daughter would be, â€Å"a beautiful little fool†.Daisy was born in a rich and high class family in Louisville, where she had a short fling with the handsome young man Jay Gatsby who had a fake identity. When Nick described his cousin Daisy, he said she has a voice that m akes her untouchable and â€Å"full of money,† and made her sounds like someone who lives â€Å"high in a white palace, the king's daughter, the golden girl† She was the kind of girl who would make every girl feel jealous, who lived the life of comfort and had everything that any girl could ever wanted.To Gatsby, she is a symbol of wealth and social status, everything that he wanted and trying to achieve, and Gatsby fell in love with her, dedicated his whole life just for her basing on a faint hope that they could somehow be together once more. Unfortunately, the young lovers never got the chance to have their wishes come true, Daisy married another man when Gatsby was away at war. She did seem regretful though, before she got married, she drunkenly said: â€Å"Here, dearer'. â€Å"She groped around in a waste-basket she had with her on the bed and pulled out the string of peers. Take ‘me down-stairs and give ‘me back to whoever they belong to. Tell †˜me all Daisy change; her mind. Say: ‘Daisy's change' her mind! ‘†Ã¢â‚¬Ëœ She still ended up marrying the rich Tom Buchanan, some may say she married for the money or did not had the patience to wait for Gatsby any longer, but perhaps all she ever wanted was to be loved and live an easy life, as Jordan described: â€Å"If he left the room for a minute she'd look around uneasily, and say: â€Å"Where's Tom gone? † and wear the most abstracted expression until she saw him coming in the door.She used to sit on the sand with his head in her lap by the hour, rubbing her fingers over his eyes and looking at him with unfathomable delight. Her love for Tom was not entirely based on his wealth or power, but she simply loved him. When she eventually fell in love with Tom after she reluctantly had got married, it was not that she only cared for the fabulous life and forgot all about Jay Gatsby, she merely wanted what every other 20 something girls wanted, to love and to be loved. Most readers have negative opinions of her.She killed a person by driving clumsily and decided to run away, leaving Jay Gatsby broken hearted and in the end, dead. She is overly rich which caused her to seem careless and did not have any constructive thoughts over other subjects beside love and money. But one must not neglect the fact that she was raised and lived in an environment that only taught her to act the way she did, she did not know any better. As a rich girl growing up, she was probably well protected and well loved, what was she to know what it meant to be responsible for ones actions?And yet, when her baby girl was born, she told Nick: â€Å"all right,' I said, ‘I'm glad it's a girl. And I hope she'll be a fool – that's the best thing a girl can be in this world, a beautiful little fool†Ã¢â‚¬Ëœ It seemed that she was glad that her daughter was a girl, but in between her tears, a sadness also appeared, perhaps she ad wished that her chil d would be a boy, so it would not have to live as vulnerable as her. But since her child was a girl, she then wished that it was a beautiful fool like she is, to live a simple life and be blinded from all the unhappiness that she had to live with despite her wealth.Although not exactly not as complex and great as the â€Å"Great Gatsby', and very flawed, Nick and Daisy are still characters who are worth the reader's attention. They consist of complicated characteristics, both likable and repugnant, which made them seems like people who readers can relate to in their own lives. Novels are reflections of the realities, and having doubts and making bad decisions are things that everyone faces in their life.

Why is the UN's human rights agenda so limited Essay - 1

Why is the UN's human rights agenda so limited - Essay Example gressive developmental cooperation, some people around the globe, especially those concerned with the human rights treaties and millennium declaration, feel that it is a betrayal of the embodied universal values. Based on items of the current human rights agenda of MDGs, the only item that tries to address sustainable development is on environmental sustainability. However, it gives a bias to two specific issues, which are water and sanitation to improve access to safe drinking water. Apparently, the item seems to focus much to the problems that many societies in the developing and emerging nations struggle with than the already developed nations. The focus of MDGs on access to clean water and sanitation is just but a narrow focus to the big question of water resources management, in a world that is struggling with environmental degradation, declining water resources affected by the climatic conditions and increased utilization of water. The truth is that even after the ‘water for life decade of action’ comes to an end, there will still remain persistent issues related to water, least to mention the challenging factors associated with the environment that affect sustainable deve lopment. It is evident that there was a narrow focus on sustainable development. According to Schaefer- Preuss, MDGs focused on â€Å"halving the proportion of people in the globe who lacked access to sustainable clean water and basic sanitation† (2014, p.1). While this is just an aspect of the complex need to sustainable development, policy makers failed to consider crucial changes a decade later. Climatic conditions, population growth, and factors of economic development like industrialization are all working to influence the global water cycle and utilization. Today, there are far worse challenges to environmental sustainability inclusive of deforestation, extractive industries that could lead to humanitarian crisis, and which serve as potential hindrances to broad sustainable

Hezbollah and its history Term Paper Example | Topics and Well Written Essays - 2000 words

Hezbollah and its history - Term Paper Example 2%2'2''y2222''22222222222222 22222222''22222222''4222V2i2s2u2a2l2 2T2o2u2r2 2 2B2u2s2i2n2e2s2s2 2L2a2w222'''222222222 22 22222222''22222222''D2223022'''222D222222 22 222222222''2222222222222 22222222''222222222''!2221. 22'''222"222222222"222222"222'''222!222222 22 22222222''222 22222''' 22h2t2t2p2:2/2/2w2w2w2.2b2u2s2i2n2e2s2s2.2g2o2v2/2g2u2i2d2e2s2/2b2u2s2i2n2e2s2s2-2l2a2w2/2 2 2P2a2r2t2 2o2f2 2t2h2e2 2P2r2e2s2i2d2e2n2t2 s2 2e2-2g2o2v2e2r2n2m2e2n2t2 2i2n2i2t2i2a2t2i2v2e2,2 2t2h2e2 2s2i2t2e2 2o2f2f2e2r2s2 2h2e2l2p2 2a2n2d2 2g2u2i2d2a2n2c2e2 2o2n2 2v2a2r2i2o2u2s2 2t2o2p2i2c2s2 2l2i2k2e2 2i2n2c2o2r2p2o2r2a2t2i2o2n2,2 2t2y2p2e2s2 2o2f2 2b2u2s2i2n2e2s2s2,2 2l2i2c2e2n2s2i2n22222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222... 2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222'2''%22 2'(222'22'22'22'22222 22222222222 222222 '2 '22222 222 222'2'''22222''22222222''X222h2t2t2p2:2/2/2w2w2w2.2b2u2s2i2n2e2s2s2.2g2o2v2/2g2u2i2d2e2s2/2b2u2s2i2n2e2s2s2-2l2a2w2/22''X222h2t2t2p2:2/2/2w2w2w2.2b2u2s2i2n2e2s2s2.2g2o2v2/2g2u2i2d2e2s2/2b2u2s2i2n2e2s2s2- ''22222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222o2p2i2c2s2 2l2i2k2e2 2i2n2c2o2r2p2o2r2a2t2i2o2n2,2 2t2y2p2e2s2

Case study-Southwest Airlines Essay Example | Topics and Well Written Essays - 1250 words

Case study-Southwest Airlines - Essay Example It is a lucid fact that only a satisfied employee can have organizational commitment. ‘Organizational commitment’ is an attitude of an individual with a strong desire to remain a member of a particular organization with willingness to exert high levels of effort on behalf of the organization, accepting the values and goals of the organization. Incidentally, Organizational commitment can be expected only from a satisfied worker and a satisfied worker is always a motivated worker. If there is no conflict between group goals and personal goals of a member in a group, i.e. goals of an employee and an organization in which he/she works are complementary and not contradictory, then the employee is motivated to work for the goals of the company, because, by doing so, he will be achieving his own personal goals. Thus, success of an organization like Southwest Airlines has been on account of the apt application of the various concepts of organizational behaviour like Motivation, Decision Making, Group Behavior, Communication, Power and Politics, Organizational Structure, Organizational Culture, Human Resources Practices and Change Management. These core concepts of Management in Southwest Airlines have been elaborated in this study. Research proves that a motivated and productive employee experiences meaningfulness of the work done, experiences responsibility for the outcome of the work done and has high levels of knowledge of the results of the work performed (Hackman, 1976). Motivation is the core of management. The employee benefits in this organization are designed to balance the dissatisfiers and enhance the motivational factors as described by Herzberg (Fredrick Herzberg, 1959). One of the special benefits offered to employees working at Southwest is flying free effective from the first day of employment. Employees, spouses, eligible dependent children, and parents of Employees have unlimited

Chemotherapy Lounge Assignment Example | Topics and Well Written Essays - 250 words

Chemotherapy Lounge - Assignment Example Nursing as caring by Anne Boykin and Savina Schoenhofer is the most appropriate theory. The theory explains that caring is an innate virtue arising from the humanness of a person. It further explains that people live their live caring at every moment with each moment being unique. The patient in the case requires simple recognitions some of which arises from the humanness of the nurses. He wants the nurse to care for his unique needs at every moment. As such, the theory offers the best description of a nurse that would enhance his holistic healing. Jean Watson’s theory of human caring offers relational caring both for self and for others. The theory explains that one must always cultivate his or her spiritual practice beyond the ego. This requires a form of mind body and spirit type of wholesomeness in order for one to work as a nurse (Watson, 2008). Such an individual practices a form of loving kindness and equanimity that can help the patient in the

Impact of Education on Veterans Empowerment to Enhance Careers and Job Essay

Impact of Education on Veterans Empowerment to Enhance Careers and Job Satisfaction - Essay Example Soldiers of the World War II spent a considerable period of their lives in the battle field. Incidences taking place in the battle field caused psychological torture and trauma on these soldiers. During their homecoming, the process was characterized by a mixture of feelings and emotions. While those left in their homes advanced academically and improved in the social class, particularly friends and relatives, the soldiers were less educated, with their education stagnating. The civilians acquired higher education and got married, changed their lifestyles among others. On the contrary, the war soldiers came back to start their lives, some from destroyed families and others stalled careers. These problems they faced right on their return were too hard to bear. To solve them, they required economic, financial and psychological support. As a congratulatory message, they were presented with a range of benefits after completing the GI program. Education largely featured among these benefi ts. The potential of education in bringing the soldiers back to normal life as well as putting them in the same social class contributed to this emphasis. Many scholars undertook to conduct studies on the effects of these benefits in transforming the lives of these soldiers. While some argued that these were of no use in changing their way of life, others were confident that they would adequately change them. It is due to these conflicting studies and arguments that I will conduct this study. Its main intent wil