The sport discipline

The sport discipline In sport disciplines that rely on speed endurance or strength endurance, anaerobic glycolysis provides the primary energy source for muscular contractions (Zajac et al., 2009) During high intensity exercise there is an increase of hydrogen (H+) ions in the mitochondria (Pilegaard et al., 1999). The metabolic demands of high-intensity exercise are met primarily by glycolysis, which is the non-oxidative breakdown of glucose (Gosselink et al.,1995). This is caused when the demand for energy exceeds oxygen supply or utilisation rate. As a result the cell mitochondria cannot process all hydrogen ions joined to its carrier NADH. The hydrogen ions begin to accumulate in the cells which decrease the pH of exercising muscles and cellular acidosis occurs (Brooks 1985). To maintain availability of NAD+, and to prevent acidosis, excess Hydrogen ions are temporarily bound with pyruvate to form lactic acid. Rupp et al., (1983) states that at rest arterial blood pH is ~7.4, while venous blood pH is normally slightly lower (~7.3-7.35) and muscle pH is ~6.9. It is also suggested Exhaustive exercise decreases pH ~0.4 pH units in both blood and muscle, and is highly correlated to increased blood lactate concentration. Similarly, blood and muscle bicarbonate ion concentration decreases linearly as a function of increasing lactate ion concentration. This increase in hydrogen ion concentration interferes with anaerobic metabolism by disrupting the activities of key enzymes; it is also associated with reduction in ATP production, lipolysis, and muscle tension (Monedero Donne. 2000). Harrison and Thompson (2005) state that the increase in acidity ultimately inhibits energy transfer and the ability of the muscles to contract; forcing the athlete to decrease the intensity of exercise. Gollnick et al., (1986) suggests that this is because hydrogen ions displace calcium from troponin, which causes interference in muscle contraction. It is the production of these hydrogen ions and the decrease in pH that causes the effects associated with fatigue (Robergs, 2004) Acidemia also has an effect on the cardiovascular system, by reducing or stops the responses of the heart to stimulation of sympathetic nerves and slows the heart rate due to vagal stimulation (Hainsworth 1986) CO2 levels and the pH of the blood perfusing the cephalic circulation has an effect on efferent signal activity (Soladoye et al., 1985) The bodys first line of defence to prevent acidemia are naturally occurring chemical buffers such as a weak carbonic acid and sodium bicarbonates (Zajac et al., 2009) A buffer is a solution containing substances which have the ability to minimise changes in pH when an acid or base is added to it (worthley 1977) The intracellular buffering system, includes amino acids, proteins, Pi, HCO3, creatine phosphate (CrP) hydrolysis, and lactate production, binds or consumes H_ to protect the cell against intracellular proton accumulation (Robergs et al., 2004) Explain gradient In the bicarbonate buffer (HCO3) system the chemical equilibrium between carbonic acid and bicarbonate act as a ph regulator. Buffering results in H+ ions being drawn out from the muscle cells into the blood due to a concentration gradient. This process reduces the acidity within in the muscle cells (Lambert et al., 1993). If the [H+] in blood begins to drop then the pH raises, more carbonic acid dissociates, replenishing hydrogen ions. When [H+] rises, the bicarbonate ion acts as a base and removes the excess hydrogen ions lowering the pH (Mcnaughton et al., 2008) During buffering NaHCO3 in plasma exerts a strong buffering action on lactic acid to form sodium lactate and carbonic acid. An additional increase in [H+] from carbonic acid dissociation causes the dissociation reaction to move in the opposite direction to release carbon dioxide into plasma. (McArdle et al., 2007) Hydrogen ions, carbon dioxide, and oxygen are detected by specialized chemoreceptors in the brain. Inside cells, carbon dioxide (CO2) combines with water (H2O) to form carbonic acid (H2CO3). The carbonic acid breaks down rapidly into hydrogen ions and bicarbonate ions. Therefore, an increase in carbon dioxide results in an increase in hydrogen ions, while a decrease in carbon dioxide brings about a decrease in hydrogen ions (West 1995) chemoreceptors in the medulla detect the raised level of carbon dioxide and hydrogen ions. They send afferent signals the inspiratory center, which immidately stimulates veltilation to eliminate excess carbondioxide (McArdle et al., 2007) State how buffers work, conversion of co2 Hawthorn (1986) states that in the short term the most important buffer in the body is haemoglobin as it produces the smallest change in pH per given amount of acid, showing that it is most effective in retaining equilibrium. In the long term the most important buffer during exercise is the ventilatory buffer system in combination with bicarbonate. As the lungs remove excess CO2, reduced plasma CO2 levels accelerate the recombination of H+ and HCO3, lowering free [H+]s in plasma (McArdle et al., 2007) When the buffering capacity within the cell is exceeded, lactate and hydrogen ions diffuse outside the cells (McNaughton, 1992) thus reducing [H+] in muscle cell, this however leads to a higher H+ gradient in the blood (Robergs et al., 2004) resulting in an increased acidic environment. The ability to tolerate high-intensity exercise is limited by the bodys ability to counteract decreases in intracellular (muscle) and extracellular (blood) pH through its intrinsic buffering systems (Gosselink et al.,1995) What is Sodium Bicarbonate Lambert et al., (1993) states that Sodium bicarbonate is an alkalising agent that reduces the acidity of the blood by the process of buffering. Sodium bicarbonatebuffers the acidity from lactic acid that is created by anaerobic metabolism. This allows prolonged maintenance of force or power (Montgomery and Beaudin 1982) Sodium is an electrolyte that helps increase or maintain blood volume, creating a larger buffering space for muscles to excrete the extra acidity created by high-intensity activity. Benardot (2006) has suggested that the sodium in the sodium bicarbonate may actually be more useful than the bi carbonate. Potteiger et al. (1996) tested the effect of sodium citrate on 30-km cycling performance. Performance times averaged almost 3% faster than those in the placebo condition, showing the effectiveness of sodium and its effect on performance. Bicarbonate serves a crucial biochemical role in the pHbuffering system by accepting hydrogen ions from solutions when they are in excess and donating hydrogen ions to the solution when they are depleted, keeping a constant state of homeostasis. (Robergs et al., 2004) This process reduces the acidity within in the muscle cells. The process of buffering could therefore result in delayed fatigue and increased muscle force production. (Lambert et al., 1993) Despite an increase in extracellular bicarbonate, studies show that the sarcolemma is not permeable to bicarbonate (Mainwood Cechetto 1980). This suggests that H+ ions are not buffered inside muscle cells. Extracellular bicarbonate concentration results in greater H+ efflux to the blood (Mainwood Worsley-Brown. 1975) More about why Thus it has been reasoned by physiologists that by increasing bicarbonate reserves, the bodys extracellular buffering capacity will allow hydrogen ions to diffuse from the muscles at a faster rate. The benefit from sodium bicarbonate supplementation would therefore be a delayed onset of fatigue during anaerobic exercise (Cairns, 2006) In the early 1980s it was suggested that ingestion of NaCO3 could be effective in improving short-term exercise performance. Wilkes et al., (1983)compared the effects of NaCO3 and a placebo in six competitive 800-m runners. The bicarbonate was givenover a two-hour period at a dose equivalent to 21 gm for a 70-kg person (0.3 g per kg of body weight).The athletes completed a competitive 800-m race. Average performance was 2% faster in the bicarbonate condition than in the control or placebo conditions. In a similar study, but using a higher dose of sodium bicarbonate (0.4 g/kg, or 28 gm for a 70-kg person),Goldfinch et al. (l988)investigated the 400-m race performance of six trained runners.Athletes competed in pairs to simulate real competition. The performance of the bicarbonate group was 2% better than the control and placebo, which were not different from each other. The time difference was equivalent to a 10-m distance at the finish. Muscle biopsys on athletes have shown that after bicarbonate loading, the less acidic your blood pH and also less acidic your muscle pH. (Bouissou et al., 1988) Other studies Lactate production acts as both a buffering system, by consuming H+, and a proton remover, by transporting H+ across the sarcolemma, to protect the cell against metabolic acidosis. (Robergs et al., 2004) Katz and Sahlin (1988) states that rapid the increase in the production of lactic acid and the free H+ can be buffered by bicarbonate causing the nonmetabolic production of carbon dioxide (CO2). Consecutively the raised blood CO2 content stimulate an increased rate of ventilation causing the temporal relationship between the lactate and ventilatory thresholds (Stringer et al., 1992). Thomas et al., (2005) state that Lactate concentrations increase post exercise after NaHCO3 ingestion. This is common amongst studies testing the effects of NaHCO3. Raymer et al. (2004) suggests that at the point of fatigue, muscle [H+] does not decrease with sodium-bicarbonate ingestion. However the acidosis threshold increases, meaning that during induced alkalosis, muscle acidosis is lower at the same muscle workload. This is congruent with Cairns (2006) who stated that NaHCO3 delays onset of fatigue during anaerobic exercise. However there are potential negative side effects from taking sodium bicarbonate include severe gastrointestinal distress and nausea; this should give athletes reason to be careful before taking this potential ergogenic aid (Applegate 1999). These risks can be reduced through appropriate dosing and timing RPE and anticipation, if RPE is reduced then you should go faster How bicarb affects perceived exersion How other mechanism so regulating ph and mayb central gonenor afferent and efferent pacing algorithm However it has been suggested that NaHCO3 ingestion alone may not increase performance and other mechanisms may regulate performance for example the Central Governor model. The central governor model suggests that the brain is contently monitoring biochemical changes in the body through afferent and efferent signals and regulates them accordingly. This safety mechanism is in place to regulate and possibly stop exertion to prevent damage to the cells. This would suggest that the reason athletes are able to exert for longer is that the afferent signals such as pH levels in the muscle allow the brain to exert more without the risk of damage. Studies giving evidence for this argument include studies by Kostka Cafarelli (1982) have suggested that RPE during exercise maybe influenced through manipulation of acid-base status, suggesting that shifts in [H+] are linked to sensory processes (Renfree 2009) Ingestion of NaHCO3has been demonstrated to reduce RPE during supra lactate threshold (>LT) intensity exercise (Robertson et al 1986). This is congruent with finding from Renfree (2009) who found that Power output was higher (P Robbertson et al 1986 Applegate, E (1999). Effective nutritional ergogenic aids. International journal of nutrition. 9 (2) 229-39 Bouissou, P; Defer, G; Guezennec, C Y; Estrade, P Y; Serrurier, B (1988) Metabolic and blood catecholamine responses to exercise during alkalosis. Medicine Science in Sports Exercise, 20, (3) Cairns, S.P. (2006) Lactic acid and exercise performance. Sports Medicine 36, 279-289. concentration on the efflux of lactate from frog sartorius muscle. J. Physiol. (Lond.). 250:1-22, 1975. Dan Benardot. D (2006) Advanced Sports Nutrition Fitts, R. Holloszy, J. (1976). Lactate and contractile force in frog muscle during development of fatigue and recovery. American Journal of Physiology, 231(3), 430-433. Goldfinch, J., Mc Naughton, L.R., Davies, P. (1988). Bicarbonate ingestion and its effects upon 400-m racing time. European Journal of Applied Physiology and Occupational Physiology, 57, 45-48. Gollnick, P., Bayly, W. Hodgson, D. (1986). Exercise intensity, training diet, and lactate concentration in muscle and blood. Medicine and Science in Sport and Exercise, 18(3), 334-340. Gosselink. K, Linderman. J, Fahey. T (1995) Sodium Bicarbonate as an Ergogenic aid. Life Science journal, 239-250 Harrison, A. and Thompson, K. (2005) Ergogenic aids: sodium bicarbonate. Peak Performance 219, 9-10 Katz A and Sahlin K. (1988) Regulation of lactic acid production during exercise. J Appl Physiol 65: 509-518 Kostka, C., AND E.Caffarelli (1982) Effect of pH on sensation and vastus lateralis electromyogram during cycle exercise.J.App.Physiol.52(5)1181-1185. Lambert, C.P., Greenhaff, P.L., Ball., Maughan, R.J. (1993). Influence of sodium bicarbonate ingestion on plasma ammonia accumulation during incremental exercise in man. European journal of applied physiology, 66, 49-54. Lindermann, J.K., Gosselink, K.L. (1994). The effects of sodium bicarbonate ingestion on exercise performance, Sports Medicine, 18, 75-80. Mainwood, G.W., and D. Cechetto. The effect of bicarbonate concentration on fatigue and recovery in isolated rat diaphragm muscle. Can. J. Physiol. Pharmacol. 58:624-632, 1980. Mainwood, G.W., and P.A. Worsley-Brown. The effect of extracellular pH and buffer McArdle, W.D, Katch, F.I, Katch, V.L., (2005) Exercise Physiology, 6th edition. Baltamore: Lippincott, Williams Wilkins Mcnaughton, L.R., J. Siegler, And A. Midgley. (2008) Ergogenic Effects Of Sodium Bicarbonate. Curr. Sports Med. Rep., 7 (4) 230-236, Monedero, J. Donne, B. (2000). Effect of recovery interventions on lactate removal and subsequent performance. International Journal of Sports Medicine, 21, 593- 597 Montgomery, D.L, and Beaudin, P.A. (1982). Blood lactate and heart rate response of young females during gymnastic routines.J. Sports Med.22, 358-365. Pilegaard, H., Domino, K., Noland, T., Juel, C., Hellsten, Y., Halestrap, A. Bangsbo, J. (1999). Effect of high-intensity exercise training or lactate/H+ transport capacity in human skeletal muscle. American Journal of Physiology, 276(2), Raymer, G.H., Marsh, J.M. Kowalchuk, and. Thompson, R.T (2004) Metabolic effects of induced alkalosis during progressive forearm exercise to fatigue. J. Appl. Physiol. 96:2050-2056 Renfree 2009 (The effect of NaHCO3ingestion on power output during exercise at a constant level of perceived exertion) Proceedings of the Ecss conference 2009 Robergs, R.A, Ghiasvand. F, and Parker. D (2004) Biochemistry of exercise-induced metabolic acidosis. Am J Physiol Regul Integr Comp Physiol 287: 502-516 Robergs. R,Ghiasvand. F andParker. R (2004) Biochemistry of exercise-induced metabolic acidosis. Am J Physiol Regul Integr Comp Physiol 287: 502-516 Robertson R.J., J.E.Falkel, A.L.Drash, A.M.Swank, K.F.Metz, S.A.Spungen, AND J.R.LeBoeuf (1986) Effect of blood pH on peripheral and central signals of perceived exertion.Med.Sci.Sp.Ex.18(1)114-122 Rupp J.C., Bartels. R.L, Zuelzer. W, Fox. E.L and Clark. R.N (1983) Effect of sodium bicarbonate ingestion on blood and muscle pH and exercise performance. Med. Sci. Sports Exerc, 15, 115. Soladoye, A.O, Rankin. A.J, Hainsworth. R (1985)Influence Of Carbon Dioxide Tension In The Cephalic Circulation On Hind-Limb Vascular Resistance In Anaesthetized Dogs. Experimental Physiology,70,527-538. Stringer W, Casaburi R, and Wasserman K. (1992) Acid-base regulation during exercise and recovery in humans. J Appl Physiol 72: 954-961, Sutton, J.R., Jones, N.L., Toews, C.J. (1981). Effect of pH on muscle glycolysis during exercise. Clinical Science, 61, 331-338. West, J. B. (1995).Respiratory Physiology: the essentials, (5)1-10 Wilkes, D., Gledhill, N., Smyth, R. (1983). Effect of acute induced metabolic alkalosis on 800-m racing time, Medicine and Science in Sports and Exercise, 15, 277-280. Williams, M.H. (1992). Bicarbonate loading, Gatorade Sports Science Exchange, 4(36). Worthley LI.(1977) Hydrogen ion metabolism.Anaesth Intensive Care PubMed 5(4) 347-407 Zajac. A, Cholewa. J, Poprzecki. S, Waskiewicz. Z and Langfort. J. (2009) Effects of sodium bicarbonate ingestion on swim performance in youth athletes. Journal of Sports Science and Medicine, 8, 45-50

Guiliani vs Clinton :: essays papers

Guiliani vs Clinton The U.S. senate elections are right around the corner. All across the nation politicians from all parties are starting to lobby to gain support for various Senate seats. Who can run to be a Senator is outlined in the U.S. Constitution, which was written more than 200 years ago. The candidate must be over the age of 25 and must be a resident of the state he wishes to run for the Senate in. A promising candidate is Mayor Guliani. He has lived in New York most, if not all, of his life. During his 2 terms he has lowered the number of street vendors in Manhattan, has implemented stricter laws on cab drivers and increased fines for breaking certain laws; he has also decreased the sale and use of illegal fireworks by more than 95%. These are just a few of his accomplishments that have contributed to a safer and happier NYC. A "candidate" that is not as appropriate for the job of NY Senator is the First Lady, Hilary Clinton. She has lived in NY for only the past few days and has only one child that goes to college in California. During her husband's political career, she has been a strong supporter of her husband politically and personally, at least in the public’s eye. Over the past year rumors have spread of Hilary beginning an active political career, with her husband's winding to an end. During the past year the rumors have been more or less confirmed with Hilary buying a house in NY and her sudden "love" for the Yankees. Guliani's response has been to visit Hilary's former home, Arkansas, and gaining the support of its governor, who happens to be of an opposing party. The only benefit of this tactic was to mock Hilary's sudden conversions. Hilary can and probably will run for the Senate.

Tooth and Claw

â€Å"Disguises† Every character and their relationships between them in â€Å"Tooth and Claw† by T. Coraghessan Boyle, disguise themselves in many ways, both consciously and unconsciously, all for different purposes. The author introduces us to four major characters in this story that all interact with each other and have some sort of mask over themselves hiding their true identities and motives. The main character James Turner Jr. as recently moved to California â€Å"So that I could inject a little excitement into my life and mingle with all the college students in the bars†¦Ã¢â‚¬  he lives by himself in an apartment which his aunt pays for even though he has a full time job. This apartment is extremely messy and unorganized. It seems to me that James is not living up to his full potential, he is running away and maybe even hiding from something the apartment is perfect example of just that. James has a full time job but was recently told to take some time off and now he does not know what to do with his free time. James is drawn to a bar named â€Å"Daggets,† â€Å"Daggets is the only place I feel comfortable. And Why? Precicely because it was filled with old men drinking themselves into oblivion. It made me think of home. Or feel at home, anyway. † James has moved halfway across the country to â€Å"Mingle with the college students† yet he frequently visits a bar that is surrounded with â€Å"old men. † He has been eyeing a waitress at â€Å"Daggets† named Daria, but â€Å"hadn’t worked up the nerve to say more than hello and good-bye to her. â€Å"Daggets† may serve as another mask that James is hiding beneath, it reminds him of his father (who died sixth months earlier) and he can also relate to Daria because of how close in age they are. A mysterious man enters the bar named â€Å"Ludwig† who begins to show falsehoods right from the start. He begins to flirt with Daria and orders two raw eggs from her, everyone believes he is going t o eat them but he does not. After James has had a few drinks Ludwig convinces James to play him in a game of dice but doesn’t tell him what they are playing for. Ludwig surprises everyone and brings in a large cage with an African wild cat nside it, to everyone’s surprise this is what they will be playing for. James doesn’t have the courage to back down and â€Å"I couldn’t back out without feeling the shame rise to my face—and there was Daria to consider, because she was watching me, too. † It seems as though Ludwig sort of a con artist, he brings an exotic animal that he wants to get rid of to a bar where almost every person in there is judgment impaired. This was Ludwig’s plan, go to a bar, convince some drunk people to play a game, and dump this animal on them and leave. James is intoxicated enough to fall right into his plan, not knowing what hit him until it was too late. James wins the game of dice, winning the cat and immediately after Ludwig disappears and James is trying to figure out what has just happened. Daria witnesses this and immediately shows interest, excitement, and curiosity. â€Å"Daria rose and came to me with a look of wonder. ‘Don’t do a thing till I get off, O. K.? ’ and in her favor she took hold of my arm. ‘I get off at nine, so you wait, O. K.? ’† Daria is falsely identifying herself to James (unconsciously or consciously) she begins to lead him on. James believes she is interested in him but she is really interested, excited and curious about the cat and the moment, she is in for the ride. Daria has her own motives, it seems she does not really care about James. They go shopping together to buy essentials for the cat, Daria in control of the situation and in complete disregard for James. â€Å"I watched Daria march up and down the aisles seeking out kitty litter and the biggest cat pan they had†¦Ã¢â‚¬â„¢I’ve only got ten bucks,’ I said†¦she reached back to slip the band of her ponytail so that her hair fell glistening across her shoulders, a storm of hair, fluid and loose, the ends trailing down her back like liquid in motion. She tossed her head impatiently. ‘You do have a credit card, don’t you? ’† Daria is subtly flirting with James; she is leading him on again so that she will get what she wants. She does not care whether he has any money; she is so interested and curious about the animal that she will do anything to get what she wants. The next two days Daria stays at James’s house and they occasionally talk and have long conversations but becomes clear that she is only there for the concern and interest in the cat. The first day she leaves and says â€Å"Take care of our cat now, O. K.? † It seems as though she is implying that they are together and the cat is both of theirs. This seems to confuse James, he doesn’t know exactly what she meant by that. Replying to this he shows another falsehood by not showing exactly how he feels, â€Å"I shrugged in a helpless, submissive way, the pain of her leaving as acute as anything I’d ever felt. ‘Sure,’ I said. † She then pulls him in for a kiss and calls him â€Å"sweet. Every time she enters the apartment she goes right to the cat and every time she wakes up she immediately says â€Å"We have to feed the cat. † Soon Daria’s ride is over, her interest is lost in the cat and in James (if there was any real interest to begin with) and so is her curiosity. She soon figures out James’s real personality, how he is basically a loser and whatever interest she may have had with him, has been lost. After she has spent the last three days with him she ends up telling him that she has a boyfriend and that she doesn’t want to give him the wrong â€Å"impression. Whether she realizes it or not she leads him on this entire time and already did give him the wrong impression, she was falsely identifying herself and her actions towards James. James does not know what to do with himself after what Daria informs him. He formed a dependence on her, â€Å"I felt lost without her. † He becomes angry and hostile with the manager at â€Å"Daggets,† his boss, and himself. After he is asked to leave the bar for drinking too much and insulting the bartender, James faces the cat and essentially attempts to commit suicide. He goes back to his apartment, â€Å"Pulled open the door, and slipped inside. And then—and I don’t know why—I pulled the door shut behind me. † Every character in this story misrepresents themselves in one way or another with the way they act towards each other and with what they have people believe. Even the giant African cat misrepresents itself, it does not belong in a bar, nor does it belong in an apartment. The characters in this story hide behind masks, physically or theoretically all to gain something or to hide something.

Emotional venting Essay Example

Emotional venting Essay Example Emotional venting Essay Emotional venting Essay Essay Topic: The Healers The first stage in Kuibler-Rosss ( 1969) model is denial, a common reaction to being told that one is dying. During this stage patient rejects reality of his or her impeding death. Denial of death provides patient with time to direct energies toward coping with the now reality. Undoubtedly, denial is an important self-protective mechanism, in that it enables a person to keep from being overwhelmed or rendered helpless by the frightening and depressing events of life and to direct his or her attention to more rewarding experiences. It is certainly advisable for any seriously ill person to question a terminal prognosis and seek additional medical opinions. But denial becomes unrealistic when the patient invests precious time, money, and emotions in medical quacks and faith healers. Denial of death is manifested in many ways. For example, patients who have been told clearly and explicitly that they have a heart disorder, cancer, or some other serious illness may deny having been told anything. Such oversights demonstrate how denial operates in selective attention, perception, and memory. Defensive, unconscious denial also helps a person to minimize the importance of bad news without dogmatically refusing to believe it. Denial of death is, of course, not limited to dying patients. It is also quite common among medical personnel and among the family and friends of dying patients. Anger (Emotion) During this stage, patient resents interruption of personal hopes and plans. Continual deterioration of a terminally ill patients health and sense of well-being makes it more and more difficult to suppress the fact that time is growing short. As the dying process continues, denial gradually fades into partial acceptance of death. However, partial acceptance is accompanied by feelings of anger at the unfairness of having to die without being given a chance to do all that one wants to do, especially when so many less worthy people will continue to live. The feelings of anger experienced by a dying person are frequently nondiscriminating, being directed at family, friends, hospital staff, and even God. The direct target of the patients anger, however, is the unfairness of death rather than other people. It is important for those who have regular contacts with dying people to be prepared for these attacks of anger and to recognize that much of the hostility represents defensive displacement of emotion from the real target to a convenient scapegoat. To facilitate the expression of anger (emotional venting) in a safe atmosphere, Kubler-Ross ( 1969) recommended the use of screaming rooms for both the patients and the medical staff. Usually, expression of anger allows patient to move to next stage. Bargaining In the normal course of events, a dying patients anger fades and is replaced by a desperate attempt to buy time by striking a bargain with fate, God, attending physicians or nurses, family or anyone or anything that offers hope for recovery or at least a postponement of death. Bargaining is a healthier, more controlled reaction than denial or anger, and patients in this stage make many promises. They may promise to take their medicine without fussing, to attend church regularly, to be kinder to others, and so on. Praying for forgiveness, embracing new religious beliefs, and engaging in rituals or magical acts to ward off death are also quite common. During this stage patient gradually comes to understand reality of the situation.

Free Essays on Special Relativity

Frames of Reference Einstein's special theory of relativity is based on the idea of reference frames. A reference frame is simply "where a person (or other observer) happens to be standing". You sitting at your desk is your current reference frame. You feel like you are stationary, even though you know the earth is revolving on its axis and orbiting around the sun. Here is an important fact about reference frames: There is no such thing as an absolute frame of reference in our universe. By saying absolute, what is actually meant is that there is no place in the universe that is completely stationary. This statement says that since everything is moving, all motion is relative. Think about it - the earth itself is moving, so even though you are standing still, you are in motion. You are moving through both space and time at all times. Because there is no place or object in the universe that is stationary, there is no single place or object on which to base all other motion. Therefore, if John runs toward Hunter, it could be correctly viewed two ways. From Hunter's perspective, John is moving towards Hunter. From John's perspective, Hunter is moving towards John. Both John and Hunter have the right to observe the action from their respective frames of reference. All motion is relative to your frame of reference. Another example: If you throw a ball, the ball has the right to view itself as being at rest relative to you. The ball can view you as moving away from ! it, even though you view the ball as moving away from you. Keep in mind that even though you are not moving with respect to the earth's surface, you are moving with the earth. The First Postulate of the Special Theory of Relativity The laws of physics hold true for all frames of reference. Consider ruler and a cement block. If you measure the length on the block, you will get the same result regardless of whether you are standing on the ground or riding a bus. Next, mea... Free Essays on Special Relativity Free Essays on Special Relativity Frames of Reference Einstein's special theory of relativity is based on the idea of reference frames. A reference frame is simply "where a person (or other observer) happens to be standing". You sitting at your desk is your current reference frame. You feel like you are stationary, even though you know the earth is revolving on its axis and orbiting around the sun. Here is an important fact about reference frames: There is no such thing as an absolute frame of reference in our universe. By saying absolute, what is actually meant is that there is no place in the universe that is completely stationary. This statement says that since everything is moving, all motion is relative. Think about it - the earth itself is moving, so even though you are standing still, you are in motion. You are moving through both space and time at all times. Because there is no place or object in the universe that is stationary, there is no single place or object on which to base all other motion. Therefore, if John runs toward Hunter, it could be correctly viewed two ways. From Hunter's perspective, John is moving towards Hunter. From John's perspective, Hunter is moving towards John. Both John and Hunter have the right to observe the action from their respective frames of reference. All motion is relative to your frame of reference. Another example: If you throw a ball, the ball has the right to view itself as being at rest relative to you. The ball can view you as moving away from ! it, even though you view the ball as moving away from you. Keep in mind that even though you are not moving with respect to the earth's surface, you are moving with the earth. The First Postulate of the Special Theory of Relativity The laws of physics hold true for all frames of reference. Consider ruler and a cement block. If you measure the length on the block, you will get the same result regardless of whether you are standing on the ground or riding a bus. Next, mea...

Intertextuality in Films Essay Example | Topics and Well Written Essays - 2000 words

Intertextuality in Films - Essay Example Intertextuality occurs in popular media such as television shows, movies and even interactive video games. Intertextuality is often used to provide depth to the fictional reality portrayed in the medium, such as characters in one television show mentioning characters from another.intertextuality was first proposed by Julia Kristeva . According to her a single text that can consists of many texts or it is act of changing one set of the sign into another. the use of intertextuality is perhaps the most useful and essential method of ensuring a successful show or film in today’s marketplace. as there are many sources of entertainment available in today’s life apart from films, it is very useful for modern directors to attract a particular audience. many directors and filmmakers refer to previous and old books, novels, songs, history or remake many popular films because the audience get familiar with the next story they see hear or read will remind them of something they hav e already experienced. it is the tool available to the filmmakers to take advantage of intertextuality.it is the collection of text, people, ideas, new inventions, that interact with each other to form a framework or community in which to relate the thoughts and influence each other. It is the relationship, influence and conversation between the texts. One of the example is The O.C. is the best example of television using intertextuality, with its frequent references to movie characters and comic books such Spider-Man, and Star Wars protagonist Luke Skywalker. ... films on superhero Superman are also inspired by his herioc actins and stunts in comics and stories and series on television. Drama series Lost has a huge number of interextual tie-ins, including websites, broadcasts, and even a novel written by a character, which purport elements from the series to be real.Not only does the concept reveal the author's sources, it also aids in understanding the text at hand. Through intertexuality the reader may recognize concepts that possess similar qualities of a previously read work. Since the reader is familiar with texts that a work may or may not have built from, the reader him/herself has found an avenue into the text through the work's relationship to other texts. The discovery of a relationship provides the reader with a starting point which aids to unfold the meaning of the piece. The reader will find it easier to uncover the avenues that exist into the piece if he/she has read a wide range of books. For example within a film(one frame) an advertisement (other frame) of a product can be shown, such as billboard in a scene. The film in turn is a part of genre movies or film. On television, advertisement, often allude to other advertisement of the same product such as series of advertisement of the same products or television personalities or programmes.it is the standards of textuality in discourse analysis but is also relevant.Intertextuality is closely related to media and film industry. for example many films begin with the credits rolling as a car, a train or stage travels across a landscape and arrives at a town. It may refer far more than influences of the writers to each other. On television, advertisement, often allude to

Significance of moral virtues and moral principles Essay

Significance of moral virtues and moral principles - Essay Example The focus of moral principles on behavior is the major difference between principles and virtues. Moral principles designed for medical professionals are a standard for how practitioners should act and what they should do regarding treatment and in relationships with their patients. Moral virtues, in contrast, are the beliefs that a medical professional holds regarding the kind of person they should be. Moral principles are a starting point for ethical behavior, and, while far from being exhaustive, can help teach the relevant proper moral behavior. Appropriate behavior arises from the intersection of moral virtues and moral principles, and the correlation between the principles and the virtues is how those principles are able to teach those moral behaviors. Moral virtues and principles are generally the beliefs and actions supported by the general population. However, community support is not enough to designate a behavior, virtue, or belief as â€Å"moral†. Moral virtues req uire the background support of moral reason. If a principle is to be considered moral, it must teach morally valuable behavioral traits. Community morals must be backed by reasons as to why they are moral. This can cause a dilemma if the general beliefs of a community do not agree with a practitioner's personally held belief. For example, if a particular community's legal system does not allow abortions but a medical professional feels that one is morally indicated for a particular patient, he or she may be held to be immoral by principle but moral in virtue. Simply because an action fails to meet the community morality does not make such an action universally immoral. This specific example is of course controversial and does not attempt to make a statement on the morality of abortions, but simply to make a point about the difference between community standards and an individual's beliefs. Moral dilemmas can also arise from too-strict adherence to standards that have been built from moral principles. Moral principles are a guideline and a starting point for standards, but they cannot and should not be applied universally. A good example of over-applied standards affecting moral virtue is the principle of impartiality. Most medical standards and codes of ethics hold impartiality to be the correct course of behavior; these codes hold that a medical practitioner should treat all of his or her patients the same and to keep a professional distance with all patients. However, in practice, maintaining this distance is not always practical or even desirable, especially for long-term care. A principle of impartiality in a situation where such a distance is not ethical can cause a dilemma for the practitioner, as he or she must then decide whether to obey personal moral virtues or professional moral principles. The previous example is a sample of how the gap between practical ethics and theoretical ethics, of which principles are a type, can lead to dilemmas in medical practice. Principles should only be used as a starting point for developing standards of behavior. These principles need additional data and information in order to cover the true ethics implications of a situation in treatment, and they need flexibility enough to deal with the changing reality of medical treatment. As stated above, no principle can possibly cover every treatment scenario. The resultant dilemmas can be dealt with