Analysing on Liberty by John Stuart Mill Essay Example for Free

Analysing on Liberty by John Stuart Mill Essay Humanity’s attempts to study the state of society have stretched back throughout the ages. From forefathers such as Socrates or Aristophanes to the great enlightenment philosophers of Locke or Voltaire, all have grappled with the questions of how humanity best functions as a collective. John Stuart Mill, hailed as a paradigmatic liberal political philosopher, continues this tradition of thought in his work On Liberty published in 1859. Mill’s major argument made is that the individual is sovereign in their actions insofar as they do not impeach upon the rights of others. His justifications centre strongly on the principles of utilitarianism, providing a model he believes to offer the greatest happiness to the greatest number. Through specific analysis it can be seen that he optimizes societal benefit by placing import on individuality but conversely justifying exactly when governance and restraint need to be exercised. Overall, his conclusions are an attempt to unify two competing social factors, individual liberty against circumstances in which power can be exerted over another, articulated in what has become known as the ‘harm principle’. The first and most fundamental principle Mill holds is outlined in the introductory chapter and describes the necessity for man to be free over â€Å"Over himself, over his own body and mind† (Mill, 1859: 31). Individual liberty is not only considered personally fulfilling, but also beneficial to the progress of civilisation for â€Å"Mankind are greater gainers by suffering each other to live as seems good to themselves, than by compelling each to live as seems good to the rest† (Mill, 1859: 33). It is important to note that Mill does not endorse freedom of expression for its own sake but for the greater purpose of stimulating discourse â€Å"His argument for liberty of expression is in fact an argument for liberty of discussion† (Larvor, 2006: 3) To support his claims, he highlights three primary freedoms in order of importance. Firstly, the freedom of thought itself should be unrestricted; second we should have the freedom to pursue ‘tastes †¦ to suit our own character’ (Mill, 1859: 33) regardless of whether social convention deems  otherwise; lastly, the freedom for citizens to unite, providing such action will not harm others. This idea of the ‘harm principle’ is prominent in On Liberty for each of these freedoms are subject to the overarching rule that liberty is complete so long as it does not â€Å"without justifiable cause, do harm to others† (Mill 1859: 72). He also notes that it is obvious that freedom of thought and of the mind does not directly correlate to freedom of action, for â€Å"No one pretends that actions should be as free as opinions† (Mill 1859: 72). He bases this on the logic that if ones free actions impinge upon another’s happiness, then the affected party’s own freedom is violated, outweighing the benefits of the first individual’s liberty. His conclusion is therefore â€Å"that in things which do not primarily concern others, individuality should assert itself† (1859: 73). This reasoning is fundamentally based in utilitarianism, which Mill is a eminent proponent of, as the key deciding factor needs to be maximum pleasure for minimum harm. The harm principle is the primary restraining factor on an individual’s calculus of liberty however Mill is not so blindingly liberal that he does not acknowledge the importance of government in maintaining social stability. In fact, Mill’s definition of liberty itself is intimately linked with authoritative intervention for he takes liberty to be the absence of human interference with the individuals actions (Crocker, 1980: 1). Again, utility becom es the object of question in deciding how pervasive governing bodies ought be. Mill contends, â€Å"the sole end for which mankind are warranted, individually or collectively in interfering with the liberty of action of any of their number, is self-protection†¦ His own good, either physical or moral, is not sufficient warrant†. It is here where Mill refers to the idea of ‘tyranny of the majority’, that pressure from the masses can be as pervasive as an oppressive state for there is more intangible a difficulty in arguing against the tyranny of the prevailing opinion and feeling. (Mill, 1859: 7) Yet here it is apparent that Mill defends the use of public pressure to control offensive opinion. Where then is the line drawn regarding what is unique, individual and valuable thought, and what is deemed inappropriate? While Mill’s consistent self-criticism often enriches his argument, there are contradictory moments wherein his â€Å"expressions are not only ambiguous, but contradictory† (Parker, 1865: 5). The idea of utility is once again at play, however Mill’s contradictions destabilise his  main point being that the use of outside force can be used defensively against another’s individuality if it would cause another’s liberty harm. As well as discussing and arguing Mill offers a number of disclaimers in his argument including the inapplicability of children or those who require the care of others and also â€Å"backward states of society in which the race itself may be considered as in its nonage† (Mill, 1859: 14). He also notes that a person â€Å"A person may cause evil to others not only by his actions but by his inaction† such as failing to help save a person when they are directly able to but choose against it. This idea has been argued against extensively in modern debate, particularly on a legal level. Many states, Australia amongst them, require no duty or obligation to act in such a way, the rationale [being] the protection of the autonomy (Edelman, 2011: 2). Liberty is irrevocably violated if one has no choice in a matter, even if that matter may be for social good. In an attempt to promote utilitarianism and provide an argument that supports social wellbeing, Mill has contradicted his own seemingly inviolate idea of individual sovereignty. Another hole in his discourse is that There seems then no obstacle in principle within utilitarian morality to a policy which indeed prevents harm but at the expense of the most basic interests of a minority (Gray, 2003: 7). Once more the tyranny of the majority is at question and Mill’s regard for individuality is destabilized by the conflicting interest of utilitarianism. It is apparent that Mill’s account is not watertight and this is acknowledged with the criticism On Liberty has received. In essence Mill concerns himself with the struggle between authority and liberty, (Mill, 1859: 3) as the essential factors to be balanced in order to maintain stable society. On an individual level, liberty is restrained by the harm principle and on a social plane; governance and public pressure control it. Beyond these factors, individuality is considered a sacred thing, which should be embraced for the good of progress. His entire theory is grounded solidly in utilitarian ideals, whereby social progression and greatest satisfaction is the primary goal. While a number of contentious arise throughout Mills’ discussions, overall the arguments are logical and coherent. On Liberty will continue to be an iconic if not contentious piece in political literature, as will most social theory which has been and will come in the future. Reference List Edelman, James. 2011. ‘Change of position: A defence of unjust disenrichment’ (presented at the launch of the Restatement (Third) Restitution and Unjust Enrichment, Boston University Law School 16-17 September 2011) Gray, John and Smith, G.W., eds. 2002. ‘JS Mill’s On Liberty In Focus’. London: Routeledge Gray, John. 1983. ‘Mill: On Liberty. A Defence’ Gray, John. 1979. ‘John Stuart Mill: Traditional and Revisionist Interpretations’. Literature of Liberty 2(2): 7-37 Hayek, F.A. 2011. ‘The Constitution of Liberty’. New York: The University of Chicago Press. Larvor, Brendan. 2006. Mill on Liberty of Thought and Discussion in John Stuart Mill: On Liberty Discussions (British Humanist Association). Mill, John Stuart. (1859). On Liberty. London: Cambridge University Press.

Mergers and Acquisitions in the Aviation Industry

Mergers and Acquisitions in the Aviation Industry Background: Aviation industry is a symbol of comprehensive national power and an extremely important part of the national defense. It is also a significant guarantee for national security and an essential support for the development of economic and society. In the entire aviation industry, civil aviation is made up of all types of aviation activities using aircraft except military applications, which includes defense, police and customs, and the civil aviation includes commercial aviation and general aviation. In recent years, the rapid development of civil aviation plays an increasingly important role in the aviation industry. In terms of globalization, the aviation industry is mainly concentrated in the United States, Europe, Canada, Australia and some other developed regions. Along with the rapid development of the global economy, the enthusiasm for developing aviation industry of many new industrialized countries has also been greatly inspired. A number of high-end manufacturing, including the aviation industry, are shifting from developed countries to developing countries, to meet the global market demand, many developed countries and developing countries began the cooperation. The economic turmoil and financial crisis of the current world has caused a great shock on aviation industry, although the condition is getting improved, it is still very difficult to predict what the future will be. As one of the leaders of the aviation industry all over the world, the market of aviation industry in the United States has been greatly affected in recent years. The fallen price of tickets, rising price of oil, as well as anti-monopoly policy, all have negative impacts on the civil aviation industry in America. Merger integration is trend of the development of international aviation industry in recent years. There are many examples: In Europe, Air France and KLM Royal Dutch Airlines were merged in 2003; Lufthansa purchased Swiss Air in 2005, and later purchased the Austrian Airlines; British Airways and Iberia Airlines merged in 2010 . After a series of mergers and reorganizations, the market is full of vitality and competitive power. In the United States in recent years, the operation of civil aviation industry has become much more difficult and many airline companies are seeking to break through this condition by mergers and acquisitions. In 2005, US Airways merged America West Airlines; Delta Air Lines purchased Northwest Airlines in 2008; two years later, the United Airlines and Continental Airlines were merged and turned into the United Continental Holdings incorporated; in 2011, Southwest Airlines purchased the AirTran and after two years, American Airlines merged US Airways. After th e mergers and reorganizations, these companies operating performance begins to rise out of recession, but whether the specific results really are optimistic? This dissertation will make analysis and judgment. Congress reduced the control of the market in 1978, which brought the US economy market unparalleled interests. America has a mature aviation industry market, which has become an important factor of the growth of economy now. Even if there is a little change in the industry, it can bring a big influence on various aspects. In this tough competitive environment at home and abroad, the civil aviation industry attracts much more attention. Concentration Tendency In recent years, the aviation industry in the United States had generated a lot of new companies and there have been a lot of bankruptcy and merger phenomena, which is bound to affect the competition tendency of the aviation industry. In this dissertation, the methods used to calculate the concentration of aviation industry are Herfindahl-Hirschman Index (HHI) and Concentration Ratio (CRn). The calculation method of industry concentration index is the most common, and it is also an important indicator of measuring the market structure. It indicates the degree of concentration of the industry by calculating the proportion of the relevant value (such as sales, value added, number of employees, total assets, etc.) of the first largest n companies in the industry toward those of the entire industry. For example, CR4 refers to the relevant market share occupied by the four largest enterprises and CR8 means the relevant market share occupied by the eight largest enterprises. If the CRn is greater, it indicating a higher degree of concentration of the industry and the more likely for competition in the market tend to be monopolistic; on the contrary, the lower the concentration is, the more likely for competition in the market tend to be competitive.(MBAlib, 2012) The formula is: CRn=. In this formula, Si means the market share of the enterprise i, n means the total number of firms (for instance, the number is 4 or 8.) in the industry. However, the disadvantage of CRn is that this concentration ratio cannot indicate the total number of enterprises which are operating and competitive in this industry. For example, the market share of 2 CR4 with the same value of 75% in two different industries might not be the same, because there may be only a few companies in one industry and the other industry may have many companies. Therefore, in the dissertation, HHI will be used to measure the market concentration to improve the credibility of the data. HHI calculates the sum of the squares of market share of the largest 50 companies in this industry (if the number of companies is less than 50, it includes all enterprises). Obviously, the greater HHI is, the higher the degree of market concentration and the higher the degree of monopoly. The index can not only reflect the market share of large enterprises, but also can reflect the market structure besides large enterprises. Therefore, HHI is able to reflect the impact of large enterprises on the market more accurately. The formula is: HHI=2. In this formula, Si means the market share of the enterprise i, n means the total number of firms in the industry. HHI changes between 1/n and 1, which indicates that the higher value is, the greater unevenness distribution of the size of a firm. As long as firms merge, the value of HHI will increase; as long as the firms decompose, the value of HHI will be reduced. The advantage of HHI are it reflects large-scale companies market share more sensitively, while reflects many small businesses’ market share very little, and it cannot be affected by the number of companies and the size distribution of the industry, which is better to measure the changes in the market concentration of the industry.(MBAlib, 2010) This table illustrates the values of CR4, CR8 and HHI in ten years. According to the concentration ratio CR4 and CR8, it can be obviously found that the aviation industry was behaving as an oligopoly and was a highly concentrated industry, while in terms of HHI, the market concentration was moderate. All of the 3 values were keeping decreasing from 2001 to 2006 and appeared to hit bottom in 2007, in which year the economy crisis took place. After that, the tendency of market concentration was improved and reached a new height in 2013. (Ahren J. 2011) In summary, the level of market concentration of aviation industry was decreasing first and then keeping increasing in the United States. Accordingly, the competition tendency also turned from competitive to monopolistic, which indicates the number of companies was reduced and the market shares of large firms have increased. References: MBAlib (2010) Concentration Ratioà ¯Ã‚ ¼Ã…’CRn[online]New York. Available from: http://wiki.mbalib.com/wiki/%E8%B5%AB%E8%8A%AC%E8%BE%BE%E5%B0%94%E2%80%94%E8%B5%AB%E5%B8%8C%E6%9B%BC%E6%8C%87%E6%95%B0 [Accessed 29 January 2015] Ahren Johnston (2011) CONCENTRATION IN THE AIRLINE INDUSTRY: EVIDENCE OF ECONOMIES OF SCALE?[online]New York, Journal of Transportation Management. Available from: http://www.deltanualpha.org/pdfarticles/2011/Ahren%20Johnston.pdf [Accessed 29 January 2015] MBAlib (2012) Herfindahl-Hirschman Index [online]New York. Available from: http://wiki.mbalib.com/wiki/%E8%A1%8C%E4%B8%9A%E9%9B%86%E4%B8%AD%E7%8E%87 [Accessed 29 January 2015]

Brave New World: Hypnopaedic Slogans :: essays research papers

Sleep teaching and mind control: hypnotism techniques used for manipulation and power over the individual. Hypnotism is not widely promoted in our society as formal education; yet, it lingers on the horizon. In Huxley's Brave New World, hypnopaedia is used to promote economic stability and control emotions of the inhabitants living in England. The economy-oriented society relies on hypnopaedia to keep consumers eager to spend by them with catchy, consume-driven phrases. For example, one slogan tells people that they "do love flying. [They] . . .do love flying" (33). A resident of London likes being high, using helicopters for all transportation, and the feeling of being safe in an indestructible machine. The gas-guzzling machines cost enormous amounts of money to keep fueled, and so the gasoline market goes up. In addition, the people believe that "ending is better than mending" (35). One is taught to do away with items instead of trying to fix them. Society encourages purchasing new, always buying more and more so as to boost the economy. Furthermore, children are taught that "the more stitches the less riches" (33). Stitching and other repairing of any kind are frowned upon, because it does not cost anything, rather, it saves money. The more one attempts to mend and keep rather than throw aw ay, the less money in circulation throughout the country and thus, the economy suffers. The prosperity of this money cycle is valued highly, and so these three jingles are sleep-taught to all. Hypnopaedic slogans focus also on encouraging emotionless bliss. For example, Lenina often says "a gramme is better than a damn" (37). Society teaches one to take a gram of soma, the drug with no after affect, to get rid of problems or worries. When people choose soma instead of dealing with problems, it promotes emotional stability throughout the nation. In addition, people learn that "one cubic centimeter cures ten gloomy sentiments"(60). One is supposed to take soma instead of feeling bad or upset about anything, which can distract the mind from other, more important matters. Instability in the workplace occurs when one has emotional stress that can take away from the quality and quantity of the work done. Furthermore, people ramble off that "was and will make me ill. I take a gramme and only am" (29). It is taught that the past and future do not matter, focusing only on the present is the correct way to be.

Oriental Art Essay -- Essays Papers

Oriental Art Oriental art is very distinct from other parts of the world. In their sculptures they still used such materials as clay, wood, and bronzes. However their art work promoted such things as goodness in nature, serenity, graceful balance, spiritual perfection, and a mystical harmony within themselves. There work avoided confusion, conflict and violent emotions at all costs. New or unprecedented experiments in their art work was never welcomed, and the expression of nobility and inner worth where demanded. Ultimately oriental art was said to be â€Å"a way of being†, but to understand this you must look at the words of the great Chinese philosopher Confucius who said â€Å"Raise yourself to the beautiful.† However not all Oriental art is the same, and to see the difference and the influences of their art you need to look at the area’s of China, Japan, and Korea. The Neolithic inhabitants of China were energetic in their pottery, and where the first to practice this art, in which China has remained supreme in until recent times. Not very much is known about the earliest Chinese craftsman or the society that produced them, other than the fact that they lived in pounded earth settlements in northern Honan, Shangtung, and Kansu. These early craftsman created fine pottery, and especially beautiful vessels for funerals which where used for food and other provisions for the dead. These craftsmen where taught to honor the â€Å"five rulers† who had taught their forefathers h... Oriental Art Essay -- Essays Papers Oriental Art Oriental art is very distinct from other parts of the world. In their sculptures they still used such materials as clay, wood, and bronzes. However their art work promoted such things as goodness in nature, serenity, graceful balance, spiritual perfection, and a mystical harmony within themselves. There work avoided confusion, conflict and violent emotions at all costs. New or unprecedented experiments in their art work was never welcomed, and the expression of nobility and inner worth where demanded. Ultimately oriental art was said to be â€Å"a way of being†, but to understand this you must look at the words of the great Chinese philosopher Confucius who said â€Å"Raise yourself to the beautiful.† However not all Oriental art is the same, and to see the difference and the influences of their art you need to look at the area’s of China, Japan, and Korea. The Neolithic inhabitants of China were energetic in their pottery, and where the first to practice this art, in which China has remained supreme in until recent times. Not very much is known about the earliest Chinese craftsman or the society that produced them, other than the fact that they lived in pounded earth settlements in northern Honan, Shangtung, and Kansu. These early craftsman created fine pottery, and especially beautiful vessels for funerals which where used for food and other provisions for the dead. These craftsmen where taught to honor the â€Å"five rulers† who had taught their forefathers h...

Whitman Essay -- Biography

Biography. Born on May 31st 1819, died March 26th 1892. Born into a working class family, ended his formal education at age 11, would later say that most of his meaningful education came from outside the school house. Had apprenticeships at working-class newspapers also started his own newspaper, The Long Islander, though it later failed. Whitman's most famous work is the collection of Leaves of Grass, first published in 1955 at his own expense. In total there were 9 editions each addressing the citizens of the United States, urging them to be large and generous, a new race nurtured in political liberty, and possessed of united souls and bodies published during Whitman's life with each having its own distinct virtues and faults. Emerson received praised and support from the Transcendentalism movement, specifically, Emerson, Thoreau and Alcott (Folson & Price, 2011). Beliefs: On Personal Development. Whitman believed that it was corruption of civilization that ultimately change the goodness of human and the soul by changing the state of good in the mind. Therefore, one should disc...

Factors Affecting Solubility

There are three main factors that control solubility of a solute. (1) Temperature (2) Nature of solute or solvent (3) Pressure EFFECT OF TEMPERATURE Generally in many cases solubility increases with the rise in temperature and decreases with the fall of temperature but it is not necessary in all cases. However we must follow two behaviours: In endothermic process, solubility increases with the increase in temperature and vice versa. For example: solubility of potassium nitrate increases with the increase in temperature. In exothermic process, solubility decrease with the increase in temperature.For example: solubility of calcium oxide decreases with the increase in temperature. Gases are more soluble in cold solvent than in hot solvent. NATURE OF SOLUTE AND SOLVENT Solubility of a solute in a solvent purely depends on the nature of both solute and solvent. A polar solute dissolved in polar solvent. Solubility of a non-polar solute in a solvent is large. A polar solute has low solubil ity or insoluble in a non-polar solvent. EFFECT OF PRESSURE The effect of pressure is observed only in the case of gases. An increase in pressure increases of solubility of a gas in a liquid.For example carbon dioxide is filled in cold drink bottles (such as coca cola, Pepsi 7up etc. ) under pressure. Properties of Solution Concentration The concentration of a solution is the measure of how much solute and solvent there is. A solution is concentrated if it contains a large amount of solute, or dilute if contains a small amount. Molarity Molarity is the number of moles of solute per litre of solution. It is abbreviated with the symbol M, and is sometimes used as a unit of measurement, e. g. a 0. 3 molar solution of HCl. In that example, there would be 3 moles of HCl for every 10 litres of water (or whatever the solvent as). Molality Molality is the number of moles of solute per kilogram of solvent. It is abbreviated with the symbol m (lowercase), and is sometimes used as a unit of me asurement, e. g. a 0. 3 molal solution of HBr. In that example, there would be 3 moles of HBr for every 10 kilograms of water (or whatever the solvent was). Mole Fraction The mole fraction is simply the moles of solute per moles of solution. As an example, you dissolve one mole of NaCl into three moles of water. Remember that the NaCl will dissociate into its ions, so there are now five moles of particles: one mole Na+, one mole Cl-, and three moles water.The mole fraction of sodium is 0. 2, the mole fraction of chloride is 0. 2, and the mole fraction of water is 0. 6. The mole fraction is symbolized with the Greek letter (chi), which is often written simply as an X. Dilution Dilution is adding solvent to a solution to obtain a less concentrated solution. Perhaps you have used dilution when running a lemonade stand. To cut costs, you could take a half-full jug of rich, concentrated lemonade and fill it up with water. The resulting solution would have the same total amount of sugar a nd lemon juice, but double the total volume. Its flavour would be weaker due to the added water.The key concept is that the amount of solute is constant before and after the dilution process. The concentration is decreased (and volume increased) only by adding solvent. Thus, the number of moles of solute before and after dilution are equal. moles1 = moles2 By definition of molarity, you can find the moles of solvent. M x V = moles Substituting the second equation into the first gives the dilution equation. M1 x V1 = M2 x V2 To determine the amount of solvent (usually water) that must be added, you must know the initial volume and concentration, and the desired concentration.Solving for V2 in the above equation will give you the total volume of the diluted solution. Subtracting the initial volume from the total volume will determine the amount of pure solvent that must be added. Ionic Solutes When ionic compounds dissolve in water, they separate into ions. This process is called diss ociation. Note that because of dissociation, there are more moles of particles in the solution containing ions than there would be with the solute and solvent separated. If you have two glasses of water, and you dissolve salt into one and sugar into the other, there will be a big difference in concentration.The salt will dissociate into its ions, but sugar (a molecule) will not dissociate. If the salt were NaCl, the concentration would be double that of the sugar. If the salt were MgCl2, the concentration would be triple (there are three ions). Solubility Rules Not all ionic compounds are soluble. Some ionic compounds have so much attractive force between their anions and cations that they will not dissociate. These substances are insoluble and will not dissolve. Instead, they clump together as a solid in the bottom of solution. Many ionic compounds, however, will dissociate in water and dissolve.In these cases, the attractive force between ion and water is greater than that between cation and anion. There are several rules to help you determine which compounds will dissolve and which will not. Solubility Rules 1. All compounds with Group 1 ions or ammonium ions are soluble. 2. Nitrates, acetates, and chlorates are soluble. 3. Compounds containing a halogen are soluble, except those with fluorine, silver, or mercury. If they have lead, they are soluble only in hot water. 4. Sulfates are soluble, except when combined with silver, lead, calcium, barium, or strontium. . Carbonates, sulfides, oxides, silicates, and phosphates are insoluble, except for rule #1. 6. Hydroxides are insoluble except when combined with calcium, barium, strontium, or rule #1. Sometimes, when two different ionic compounds are dissolved, they react, forming a precipitate that is insoluble. Predicting these reactions requires knowledge of the activity series and solubility rules. These reactions can be written with all ions, or without the spectator ions (the ion that don't react, present o n both sides of the reaction), a format known as the net ionic equation.For example, silver nitrate is soluble, but silver chloride is not soluble (see the above rules). Mixing silver nitrate into sodium chloride would cause a cloudy white precipitate to form. This happens because of a double replacement reaction. Electrolytes When solutes dissociate (or if a molecule ionizes), the solution can conduct electricity. Compounds that readily form ions, thus being good conductors, are known as strong electrolytes. If only a small amount of ions are formed, electricity is poorly conducted, meaning the compound is a weak electrolyte.A strong electrolyte will dissolve completely. All ions dissociate. A weak electrolyte, on the other hand, will partially dissociate, but some ions will remain bonded together. Colligative Properties Some properties are the same for all solute particles regardless of what kind. These are known as the colligative properties. These properties apply to ideal solut ions, so in reality, the properties may not be exactly as calculated. In an ideal solution, there are no forces acting between the solute particles, which is generally not the case. Vapor PressureAll liquids have a tendency for their surface molecules to escape and evaporate, even if the liquid is not at its boiling point. This is because the average energy of the molecules is too small for evaporation, but some molecules could gain above average energy and escape. Vapor pressure is the measure of the pressure of the evaporated vapor, and it depends on the temperature of the solution and the quantities of solute. More solute will decrease vapor pressure. The vapor pressure is given by Rauolt's Law, where X is the mole fraction of the solvent.Notice that the vapor pressure equals that of the pure solvent when there is no solute (X = 1). If X = 0, there would be no vapor pressure at all. This could only happen if there were no solvent, only solute. A solid solute has no vapor pressure . P solution = P pure solvent (X solvent) If two volatile substances (both have vapor pressures) are in solution, Rauolt's Law is still used. In this case, Rauolt's Law is essentially a linear combination of the vapor pressures of the substances. Two liquids in solution both have vapor pressures, so this equation must be used. P solution = P1 (X1) + P2(X2)The second equation shows the relationship between the solvents. If two liquids were mixed exactly half-and-half, the vapor pressure of the resulting solution would be exactly halfway between the vapor pressures of the two solvents. Another relation in Henry's Law, which shows the relationship between gas and pressure. It is given by Cg = k Pg , where C is concentration and P is pressure. As the pressure goes up, the concentration of gas in solution must also increase. This is why soda cans release gas when they are opened – The decrease in pressure results in a decrease in concentration of CO2 in the soda.Boiling Point Elev ation A liquid reaches its boiling point when its vapor pressure is equal to the atmosphere around it. Because the presence of solute lowers the vapor pressure, the boiling point is raised. The boiling point increase is given by: ?T solution = Kb X m solution The reduced vapor pressure increases the boiling point of the liquid only if the solute itself is non-volatile, meaning it doesn't have a tendency to evaporate. For every mole of non-volatile solute per kilogram of solvent, the boiling point increases by a constant amount, known as the molal boiling-point constant (Kb).Because this is a colligative property, K2 is not affected by the kind of solute. Freezing Point Depression A liquid reaches its freezing temperature when its vapor pressure is equal to that of its solid form. Because the presence of the solute lowers the vapor pressure, the freezing point is lowered. The freezing point depression is given by: ? T solution = K f X m solute Again, this equation works only for non- volatile solutes. The temperature of the freezing point decreases by a constant amount for every one mole of solute added per kilogram solvent. This constant (K f) is known as the molar freezing-point constant.Osmosis If you studied biology, you would know that osmosis is the movement of water through a membrane. If two solutions of different molarity are placed on opposite sides of a semipermiable membrane, then water will travel through the membrane to the side with higher molarity. This happens because the water molecules are â€Å"attached† to the solvent molecules, so they cannot travel through the membrane. As a result, the water on the side with lower molarity can more easily travel through the membrane than the water on the other side. The pressure of this osmosis is given in the equation. ? = MRTWhere pi is the pressure, M is molarity, R is the gas constant, and T is temperature in Kelvin. Electrolytes and Colligative Properties When one mole of table salt is added t o water, the colligative effects are double those that would have occurred if sugar were added instead. This is because the salt dissociates, forming twice as many particles as sugar would. This dissociation, called the Van't Hoff Factor describes how many particles that are dissociated into the solution and must be multiplied into the Boiling Point Elevation or Vapor Pressure Lowering equations. Different ways of expressing the concentration of solutionsMass Percentage The mass percentage of a component in a given solution is the mass of the component per 100g of the solution. For e. g. , if WA is the mass of the component A, WB is the mass of the component B in a solution. Then, Example: A 10% solution of sodium chloride in water (by mass) means that 10g of sodium chloride are present in 100g of the solution. Volume percentage This unit is used in case of a liquid dissolved in another liquid. The volume percentage is defined as the volume of the solute per 100 parts by volume of s olution. For e. g. , If VA is the volume of component A present is Vsol volume of the solution.Then, For e. g. , a 10% solution of ethanol C2H5OH, in water (by volume) means that 10cm3 of ethanol is present in 100cm3 of the solution. Strength of a solution is defined as the amount of the solute in gms, present in one litre of the solution. It is expressed as gL-1. Mathematically, Molarity Molarity of a solution is defined as the number of moles of solute dissolved per litre of solution. Mathematically, For e. g. , If ‘a' is the weight of the solute (in gms) present in VCC volume of the solution. Then, Molarity is expressed by the symbol M. It can also be expressed as, NormalityNormality of a solution is defined as the number of gram equivalents (gm. e) of a solute dissolved per litre of the given solution. Mathematically it is, For e. g. , If a is the weight of the solute (in gms) present in VCC volume of the solution. Then, Normality is expressed by the symbol N. It can also be expressed as, Relationship between molarity and normality The molarity and normality of a solution is related to each other as follows: Molality Molality of a solution is defined as the number of moles of solute dissolved in 1000g of a solvent. Mathematically, it is expressed as Molality is expressed by the symbol m.Molality does not change with temperature. Formality In case of ionic compounds like KCl, CaCO3 etc. Formality is used in place of molarity. It is the number of gram formula masses of solute dissolved per liter of the solution. It is denoted by the symbol F. Mathematically it is given as, Mole Fraction It is the ratio of number of moles of one component (solute or solvent) to the total number of moles of all the components (solute and solvent) present in the solution. It is denoted by the symbol X. Let us suppose that a solution contains two components A and B and suppose that nA moles of A and nB moles of B are present in the solution then,Adding eq (i) and (ii) we g et XA + XB = 1 Parts per million (ppm) When a solute is present in very small amounts, its concentration is expressed in parts per million. It is defined as the amount of the solute present in one million parts of the solution. It may be noted that the concentration units like molarity, mole fraction etc. are preferred as they involve the weight of the solute and solvent, which is independent of the temperature. But units like, molarity, normality etc. , involve volume of the solution, hence changes with temperature.

Hillcrest Case 7 Operative

OPERATIVE REPORT Patient: T. J. Moreno Patient ID: 110497DOB: 02/15Age: 44Sex: M Date of Admission: 10/09/2013 Date of Procedure: 10/09/2013 Admitting Physician: Patrick Keathley, MD Endocrinology Surgeon : Dr. Max Hirsch, MD Orthopedics Assistant: Markus Leroy Johnson PAC (Surgical assistant was used for soft tissue protection and retraction and also for maintaining reduction during temporary and permanent fixation use of surgical assistant was medically necessary, and to prove the safety and efficacy of the procedure. Preoperative Diagnosis: Left hindfoot osteoarthritis. Postoperative Diagnosis: Left hindfoot osteoarthritis. Operative Procedure: 1) Triple arthrodesis . 2) Popliteal sciatic block placed by surgeon explicitly for postoperative pain management. Anesthesia: General by Chuck Delaney, MD. Condition during anesthesia, stable. Specimen Removed: Nine. IV Fluids: See nurse’s notes. Estimated Blood Loss: See nurse’s notes. Urine output: See nurse’s notes. Complications: None. Postoperative condition: Stable (Continued) OPERATIVE REPORT Patient: T. J. MorenoPatient ID: 110497DOB: 02/15Age: 44Sex: M Page: 2 INDICATION: A 44 year old male with hindfoot osteoarthritis pain, who has failed conservative management after reviewing risks, benefits and alternatives, he has agreed to proceed with surgical management. Risks of delayed healing, non-healing and infection, nerve vessel tendon injury, ongoing pain and discomfort, procedure failure, need for revision surgery, and/or hardware removal noted. The fact that he will have a stiffed hindfoot noted. Patient’s questions were answered, and he was consented for the planned procedure.PROCEDURE IN DETAIL: The patient was taken to the operating room where general anesthesia was induced. Time out was taken indicating the appropriated site, procedure, and patient. Operative site was initialed, one gram of Ancef given IV. Popliteal block was placed medial to lateral hamstring, 3 fingerbreadt hs proximal flexion crease to the knee. Intraneural injection of avoided by reducing the amperage to below 1 milliamp, seeing an obliteration of motor response. The extremity was prepped and draped in the usual fashion. Extremity exsanguinated, tunicate inflated.No equinus was present. Metier incision made from the tip of the fibula to the base of the fourth metatarsal. Extensor digitorum brevis and fat pad were elevated off the inferior peroneal retinaculum. Calcaneocuboid and subtalar joints were carefully exposed, denuded of cartilage, and prepared with a 4mm osteotome for arthrodesis. The calcaneocuboid joint was exceptionally osteoarthritic. The talonevicular joint linear incision was made in line with the posterior tibial course, sharp dissection carried down through skin with blunt dissection of subcutaneous tissues.Saphenous vein was retracted in a dorsal postion, linear incision made in the periosteum. The calcaneo and the talonavicular joint were carefully exposed. Cartill age, or what was remaining of cartilage was removed. There were extreme osteoarthritic thoughout. Essentially 5%-10% of cartilage remained. The osteophytes were carefully excised with osteotome, the joint was prepared with microfracture using an osteotome on both sides of the joint. (Continued) OPERATIVE REPORT Patient: T. J. Moreno Patient ID: 110497DOB: 02/15Age: 44Sex: M Page: 3Shortly the incision made off the weight bearing surface of the posterior heel. Guide wire from the 70 cannulated set was advanced across the posterior heel across the subtalar joint into the talor neck body junction. This was done while the heel was held in a slight valgus position. After verifying position and measuring, the wire was advanced to the anterior ankle, held with a hemostat. This was followed by sequential reaming with 4. 0 and then 7. 0 cannulated reamers. Next, after tapping, a fully threaded 100 mm screw was placed over a washer. Care was taken to avoid soft tissue impingement posteriorly. Excellent compression, fixation, subtalar joint were obtained without impingement of the ankle. Next the talonavicular joint was reduced to a foot plantar grade position, held with two 4. 0 cannulated screws starting at the naviculocuneiform joint. Next the calcaneocuboid joint again was adjusted to allow for plantar grade foot position. The joint was held with 4 staples from the 3M 15X16mm stabilizer. All wounds were irrigated with normal saline, excellent compression was present in each position, the medial periosteal was repaired with 3. 0 vicral suture.Subcutaneus tissues closed with 3. 0 vicral and skin closed with skin clips. On the lateral side, extensor digitorum brevis was repaied to the inferior peroneal retinaculum as was the fat pad. Subcutaneous tissue was closed with 3. 0 vicral. Skin closed with 4. 0 nylon. The posterior heel was irrigated and closed with 4. 0 nylon suture. A sterile dressing was applied plus telfa dressing, sponge, Webril, cotton roll, and plaster sp lint. The foot was at a final plantar grade position. Image intensification showed well placed hardware, extra articular to the ankle.Patient was taken to the recovery room in stable condition with no known complications. POST-OPERATIVE PLAN: The patient will be observed overnight with pain control maintained. Once he is surgically stable, patient will be transferred to endocrinology for evaluation and care of his newly diagnosed diabetes and hypertension. He is to follow up in my office in one week for wound check. _______________________________________________________________ Max L. Hirsch, MD Orthopedic Surgery mh/xx D: 10/15/20 T: 10/15/20