Thursday, November 28, 2019

6 Problems with Punctuation

6 Problems with Punctuation 6 Problems with Punctuation 6 Problems with Punctuation By Mark Nichol Six categories of punctuation errors include missing, extraneous, misplaced, excessive, incorrect, and inconsistent punctuation. Each of the following sentences illustrate one of those errors in that order, accompanied by discussion and revision. 1. One man jumped on a police car, leaving its front and rear windows smashed and the top dented in and other protesters sprayed graffiti on another law enforcement vehicle. The description of the effects of the man’s actions constitute a parenthetical phrase inserted into the main clause, which is â€Å"One man jumped on a police car, and other protesters sprayed graffiti on another law enforcement vehicle.† The parenthesis requires punctuation at the end as well as at the beginning: â€Å"One man jumped on a police car, leaving its front and rear windows smashed and the top dented in, and other protesters sprayed graffiti on another law enforcement vehicle.† 2. Security-monitoring techniques, that highlight potential incidents and enable a real-time response from the organization, are becoming increasingly important. The phrase located between the commas is not parenthetical; it is essential to the meaning of the sentence in describing exactly which type of security monitoring techniques are being discussed, so no punctuation should interfere: â€Å"Security-monitoring techniques that highlight potential incidents and enable a real-time response from the organization are becoming increasingly important.† (If all security-monitoring characteristics had these capabilities, then that phrase would be a parenthetical one that provides additional information to the sentence, but that would have to be replaced by which to signal that nonessential information follows: â€Å"Security-monitoring techniques, which highlight potential incidents and enable a real-time response from the organization, are becoming increasingly important.†) 3. Quarterback Peyton Manning threw for 290 yards and a touchdown, and perhaps more importantly, was not sacked all day. No comma is required after touchdown, because what follows is not an independent clause. However, â€Å"perhaps more importantly† is a parenthetical phrase, so a comma should precede it: â€Å"Quarterback Peyton Manning threw for 290 yards and a touchdown and, perhaps more importantly, was not sacked all day.† 4. Style comes from the characteristics that make one garment- a piece of clothing- or accessory- a nonessential item that you wear or carry- different from another. Too many instances of the same punctuation mark can confuse the reader because the sentence does not provide distinctive cues about its organization and the hierarchy of information presented. If a sentence has more than one parenthetical phrase (in this case, the definitions of garment and accessory), open and closed parentheses, which face each other and more obviously set off what appears between them, should supplant dashes or commas: â€Å"Style comes from the characteristics that make one garment (a piece of clothing) or accessory (a nonessential item that you wear or carry) different from another.† (Note that using commas in place of dashes is not an improvement, because the sentence organization is still confusing: â€Å"Style comes from the characteristics that make one garment, or piece of clothing, or accessory, or nonessential item that you wear or carry, different from another.†) 5. I’ve been there before, I found it overrated. Here a semicolon, rather than a comma, is required, because the sentence consists of two independent clauses: â€Å"I’ve been there before; I think it’s overrated.† (Alternatively, the sentence could be divided into two separate sentences, or a conjunction could replace the punctuation: â€Å"I’ve been there before, but I think it’s overrated.†) 6. Last year, a man agreed to give up his $6,000 drone system and promise not to fly a drone for three years. . . . Last month the FAA announced there are now more registered drone operators in the United States than there are registered manned aircraft. If one short introductory phrase is followed by punctuation, any similar construction within a piece of writing should adhere to this style: â€Å"Last year, a man agreed to give up his $6,000 drone system and promise not to fly a drone for three years. . . . Last month, the FAA announced there are now more registered drone operators in the United States than there are registered manned aircraft.† The same rule applies for any other style, such as how a list is punctuated; if one list is punctuated, for example, â€Å"lock, stock, and barrel,† another should not be styled, for example, â€Å"rock, paper and scissors.† Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Punctuation category, check our popular posts, or choose a related post below:Homograph Examples34 Writing Tips That Will Make You a Better WriterHow to Send Tactful Emails from a Technical Support Desk

Monday, November 25, 2019

The Great Depression Essays

The Great Depression Essays The Great Depression Paper The Great Depression Paper The Great Depression: The Extensive Effects The 1920s was a time of roaring prosperity. Even mid-October of 1929, the average middle-class American saw an â€Å"illimitable vista of prosperity† (Dixon 1). The thought of poverty was close to an end; in 1928, President Herbert Hoover stated, â€Å"We have not yet reached the goal, but given a chance to go forward with the policies of the last eight years, and we shall soon with the help of God be within sight of the day when poverty will be banished from the nation† (Dixon 1). The prescience of the end of poverty became known as the American Dream; however, this foresight was shortly lived. On Tuesday, March 26, 1929, the Hoover Administration saw the largest stock market crash of their administration to that date. Several months later brought Black Monday, the largest stock market crash in American history and the cardinal cause of the Great Depression. The Great Depression is one of the single most important events in the financial history of the United States and the world; the effects of and leading to the Great Depression lasted for several years. The Great Depression was an economic deficit with worldwide effects that began with the stock market crash of October 1929; the most profound effect of the Great Depression was the highest rate of unemployment in American history: banks, factories, and stores closed, leaving millions of Americans jobless with no money. Without money, many Americans had to rely on either the government or donations from charities to be obtain food; as the depression continued, however, the Roosevelt administration created government agencies to aid in supplying Americans with food, relieving the effects of the Great Depression, preventing a catastrophic event like it from occurring again (Great Depression). The group of people most affected by the Great Depression and the events it instigated were the American stockholders; thousands of stockholders lost large sums of money due to the rapid decrease of stock values caused by the crash of Black Monday. Although this was a huge loss, predicting it was impossible; from 1925 to 1929, the average stock price of a common stock on the New York Stock Exchange more than doubled, causing many people to make large investments in the stock market in hope of making large profits. Even people who had no prior knowledge of the stock market or how it worked attempted to invest in anticipation of profits. Economists, such as Irving Fisher, assured stockholders that they were â€Å"dwelling on a permanently high plateau of prosperity (Dixon 1)†. This, along with the assurance of many other reporters and professionals, cause the popularity of being a stockholder to skyrocket: in 1920, there were only 29,609 stockholders; a mere ten years later, there were 70,950. Stockholders’ ignorance of how the stock market worked soon turned against the thousands of investors in America and spread throughout the rest of the United States, halting economic flow (Dixon 2). The Depression had a remarkable effect on the United States; however, the United States was not the only place to feel the consequences of the Great Depression: Canada was also profoundly affected (The Global Effects of the Great Depression 1). Previously, Canada’s economy relied on the export of grain and other raw materials. The people who exported these goods suffered huge losses after other countries increased tariffs on imported products. Following the closing of many Canadian companies, the unemployment rate in Canada rose from three percent in 1929 to twenty-three percent in 1933 (Great Depression). Other governments were affected by the Depression as well. As the Depression was at its zenith in 1933, the only country hit as hard as the United States was Germany (Garraty 182). Approximately six million individuals in Germany were left unemployed. Many aspects of German life led to these despondent times. Most prominent were the reparations Germany was still paying from World War I. Chaos arose in Germany after the war, causing hyperinflation in 1923; Germany was just recovering when the stock market crash hit (Effects on Germany 1). Another factor in the economic downturn was the German government. Germany suffered a series of poor leaders; the chancellors of 1932, as Herbert Hoover said, were unable to deal with the effects of the deepening Depression. On January 30, 1933, Adolf Hitler became the chancellor of Germany (Garraty 183). The leadership of Hitler, one of the key figures in the relief of the Great Depression both in Germany and worldwide, marked the foundation of the collapse of the Great Depression. The actions beginning in 1933 aimed at relieving the Great Depression in the United States and Germany had a major influence on other nations, particularly Great Britain (Garraty 214). Great Britain, unlike the United States, had a moribund economy prior to the stock market crash of October 1929 (Smitha 27); however, the British economy did not suffer a morbid crash, as did the economies of the United States and Germany (Effects on the United Kingdom 1). Britain did, however, suffer declines in both imports and exports during the Depression. In comparison to other thriving nations during the time of the Great Depression, the United Kingdom remained in a fairly stable economic condition (Effects on the United Kingdom 2). Unlike Great Britain, the Great Depression hit many other countries in Europe immeasurably. One of these unlucky countries was France, the last major nation of at that point in time to feel the effects of the Great Depression; the reason for the delayed impact on France was the undervaluation of the French Franc (Effects on France 1). France, as Great Britain, was impacted by the efforts of the United States to relieve the Depression (Garraty 214). Finally, in 1932, the Depression brutally found its way to France: the number of tourists dropped and exports of perfume fell, as did those of wine, food, and other items (Smitha 23). Even though the Depression hit France late, it came violently. Unemployment rose fifteen percent and industrial production dropped twenty-five percent from their levels in 1929. In hope of a change, Andre Tardieu was elected to run a new French government in 1932; he gained his popularity by aiming his campaign towards the threat of communism (Smitha 24). Like many other countries, France eventually overcame the Depression through involvement in World War II, which created jobs and caused money to begin circulating once again. The Great Depression also hit Italy, with its highly regarded corporate-fascist government led by Mussolini. The public saw the erratic policy changes Mussolini made as genius; however, these changes did not benefit the economy. Even though Italy’s contribution to world manufacturing was down almost three percent, it rose from the depression in 1934 (Smitha 26). The United States, like all countries, eventually emerged from the deficits of the Great Depression. At the forefront of this recovery was World War II: it increased manufacturing and created millions of jobs. In addition, aiding in the recovery were government agencies, such as the Tennessee Valley Authority (TVA); the TVA was created in May 1933 to supervise the development of a 640,000 square mile area in the Tennessee Valley (Smitha 36). The Tennessee Valley was a region in which sharecroppers and farmers were malnourished and soils were useless for growing agricultural products. The TVA planned to help this region and restore a large amount of agricultural production to the United States (Smitha 36). Although there were many other agencies, such as the Civilian Conservation Corps (CCC), the Federal Emergency Relief Administration (FERA), and the Public Works Administration (WPA), most of them followed in the footsteps of the TVA: they were aimed at creating jobs while simultaneously either beautifying the United States or boosting the economy (Great Depression). The Great Depression heavily affected the United States and the world as a whole for several years. The Depression has taught governments around the world how to deal with economic problems in hope that it will not happen again. As Wecter Dixon stated, the stock market could be very profitable: If a man saves $15 a week, and invests in good common stocks, and allows the dividends and rights to accumulate, at the end of twenty years he will have at least $80,000 and an income from investments of around $400 a month. He will be rich. And because income can do that, I am firm in my belief that anyone can not only be rich, but ought to be rich (4). However, the stock market crash of October 1929 and the ensuing depression alerted stockholders to how volatile being involved in the stock market without knowledge could be. Even in the current recession, many world leaders are influenced by measures taken to end the Great Depression to revive economic conditions. Due to its tremendous effects in the United States and throughout the world, the Great Depression is known in history as a narrow escape from the downfall of the world economy. Hopefully, one day the world economy will be as rich and prosperous as the roaring 1920s, and America and the rest of the orld will be chasing the â€Å"American Dream† once again, barring another unforeseen event such as the Great Depression. Dixon, Wecter. The Age of the Great Depression, 1929-1941. New York: Macmillian, 1952. Effects on France. 12 April 2009 thegreatdepression. co. uk/effects-on-france/. Effects on Germany. 12 April 2009 thegreatdepression. co. uk/effects-on-germany/. E ffects on the United Kingdom. 12 April 2009 thegreatdepression. co. uk/effects-on-the- united-kingdom/. Garraty, John A. The Great Depression: An Inquiry into the Cause, Course, and Consequences of the Ninteen-Thirties as Seen by Contemporaries and in the Light of History. 1st Edition. Orlando: Harcourt Brace Jovanovich Publishers, 1986. Great Depression. World Book Encyclopedia 2001: 338-43. Smitha, Frank E. The Great Depression, to 1935. 1998-2005. 11 April 2009 fsmitha. com/h2/ch15wd. html. The Global Effects of the Great Depression. 20 March 2008. 11 April 2009 http://recessionhistory. info/the-global-effects-of-the-great-depression/.

Thursday, November 21, 2019

Retailing Assignment Example | Topics and Well Written Essays - 4000 words

Retailing - Assignment Example Dynamic economic conditions have compelled the leading retailers to re-evaluate the strategies related to the marketing channels. The varied altering trends in grocery retailing have created various opportunities for the suppliers and the manufacturers. With reference to the competitive market scenario, the retailers have enforced certain strategies and advanced plans as regards to the consumers’ behaviour (Memedovic, 2010). Company Information Tesco is considered to be the one of the biggest retailers in the global perspective. In the year 1997, it had established itself as the one of the prominent and trusted names in the field of grocery retail. Tesco represents the largest online grocery business; it targets its customers on the basis of purchase behaviour. The opportunities provided by Tesco within the websites facilitate to meet the requirement of its target consumers comprising the younger audience as well as the wealthy family audience (Datamonitor, 2004). J Sainsbury plc represents the parent as well as the host company of Sainsbury’s Supermarkets Ltd. It represents the third largest supermarket chain within the United Kingdom. It has implemented and executed certain strategies along with plans that ensure the sustainability within the competitive market scenario. Sainsbury’s vision is to be a trusted retailer (Irish Food Board, 2011). In accordance with the retailing business, the objective of the study is to compare and contrast between Tesco and Sainsbury with respect to their performance in various areas. The respective areas include store format, store design, advertising and promotions, customer segmentation and multi-channel platform. In this study, Mehrabian and Russell's approach-avoidance model will be applied. This model represents the effects of the store environment upon the consumer behaviour. In accordance with Mehrabian and Russell's approach-avoidance model, it has been further revealed that it lays emphasis upon n onverbal responses related to environmental factors that act as a major determinant of change in behaviour. Comparison and Contrast of Tesco and Sainsbury’s Performance Store Format The store format of an organisation has profound impact on the purchasing decisions. In several instances, store atmosphere, interior design and overall store environment determine the reaction of customers with respect to product purchase and consumption. The store environment comprises certain indications, messages and propositions to the customers. It can enhance the positive feeling and direct the anticipated consumer behaviour such as high inclination to purchase or longer time to stay in retail store (Gilboa & Rafaeli, 2002). Store atmosphere is a vital component of image of an organisation. For several retailers, aspects such as store layout, colour, lighting and music among others help to influence the buying behaviour of customers. They determine the selection of customers about the store to patronise. However, since the

Wednesday, November 20, 2019

Reader Response Essay Example | Topics and Well Written Essays - 500 words

Reader Response - Essay Example Nowadays American people have change completely the meaning of the word macho making this Mexican rood word someone really bad, just like golf player Tiger Woods, who cheat to his wife with more than one hundred women and was very rude with her and his fans (in 2005, he cancelled a party that his wife organized for him when he won just because he was used to win almost every month therefore that is not a fact to celebrate).   The worst thing of this as Guibault said, is that the media and the people is getting used to this misrepresented meaning of the word and it is becoming very popular all over the United States. Today I still smile and do not get upset when someone tells me that I look like a macho.   People move on with their stereotypical thinking and they have already made images in their minds about the word macho but this is again very stereotypical of them and will only misguide the other people. Guibault has done a wonderful job describing the word macho; he has described it really well. There are cultural misunderstandings which must be avoided; the use of language has brought about a significant change in our

Monday, November 18, 2019

Tourism in the German Kaiserstuhl Wine Region Dissertation

Tourism in the German Kaiserstuhl Wine Region - Dissertation Example It is evidently clear from the discussion that disapproval of ethnic-racial discrimination as well as the development of amicable social and commercial ties of the USA and Europe with the Eastern Europe and Far Eastern nations has also applied encouraging impacts on multiple industries related to tourism at the larger scale. Consequently, the tourism industry has turned out to be great in respect of providing multiple sources of entertainment and information to the tourists on the one hand, and in generating astounding revenues for the local and national economies on the other out of a constant increase in the number of tourists from different corners of the globe. The present study aims to explore the motivations behind planning the tours and traveling behavior of the tourists in the contemporary era by furnishing special concentration upon the stimulations and inspirations of the visitors to the fabulous Kaiserstuhl region of Germany. The main objective behind investigating the top ic above-mentioned is to study the factors in the wake of exceptionally fast growth of the tourist industry during modern times, which observes the tremendous increase in its nature and scope. Moreover, the study is equally interested in estimating the attraction of the tourists in this Rhine Valley Rift area of Germany. Consequently, the region is visited by thousands of visitors from all parts of Germany, Switzerland and France on the one hand, and the young people from the divergent cultures, societies, socioeconomic positions and ethnic-racial backgrounds on the other, who arrive there throughout the year in order to enjoy and entertain themselves with the natural beauty as well as thrill environment this hilly wine and food zone offers to them. In addition, its splendid larger volcanic valleys and unique wine region also fascinate the attention of the young people. The researcher has elaborated on the topic under consideration within the historical perspective. In addition, the researcher looks for adopting the qualitative method of research while collecting the informational data for the present research. The data gathered from Emmendingen district as well as from the visitors to Kaiserstuhl have been analyzed, tabulated and computed in order to estimate the increase in the percentage of the tourists visiting the region under analysis. The results revealed the very fact that: there exists a noteworthy relationship between the wine and fruit producing warm land and its enthusiastic and thrill-seeking young visitors, which would not miss the opportunity of spending their vacations and quality time to visit such a wonderful and hygienic region, situated at the junction of Germany, France, and Switzerland i.e. Kaiserstuhl.

Friday, November 15, 2019

The Kelvin equation

The Kelvin equation The Kelvin equation relates the vapour pressure of a liquid to the effect of surface curvature i.e. a meniscus with radius. The equation illustrates that due to the surface tension and the surface being larger than the volume, there is much higher evaporation rate for smaller droplet liquids when compared to that of larger droplets. ln(P/P0 ) = 2?Vm /rRT The Kelvin equation also shows that smaller particles exhibits higher solubility than larger particles. This occurs because of much greater pressure inside the droplet than outside and therefore gas diffusion can occur across the plateau borders of the droplet, weakening the walls (from high to low pressure). The vapour pressure of that over the droplet of water of radius r and inside a bubble in water at a specific temperature could be calculated using the Kelvin equation below. KELVIN EQUATION PARAMETERS P: Actual vapour pressure P0: Saturated vapour pressure Surface tension of liquid MW: Molecular weight r: Radius Density R: Universal gas constant (8.314 J K-1 mol-1) T: Temperature in Kelvin The Kelvin equation has a variety of significant effects as it provides clarifications for such phenomena including supersaturation of vapours, superheating, Ostwald ripening and capillary condensation. This effect is known as Kelvin effect and also Gibbs-Kelvin effect or Gibbs-Thomson effect. (Barnes 2005) Supersaturation The effect on the Kelvin equation could be explained in terms of supersaturation of vapour. The term of supersaturation refers to the state in which a solution has overly dissolved material than that of a saturated solution. Supersaturation could also be referred to the compounds vapour having greater partial pressure than that of the vapour pressure of the compound. In the solid form, the small particles can lead to crystallites or large single crystals formation. In a polydisperse suspension the material will dissolve until it has reached its saturated level at that temperature. When the sample is stored, the temperature will fluctuate slightly regardless of storage location. For example, if the sample is stored in the fridge, the temperature could vary and so the temperature of suspension could increase leading to a rise in saturation level allowing smaller particles to further dissolve until a new saturation level is reached. When the temperature drops, the suspension is affected in terms of consisting more than usual of the dissolved species. The new concentration is described as supersaturation. The remaining dissolved species would precipitate back on all the particles, the smaller particles preferentially dissolve and so larger particles having a coat will enlarge. Hence, supersaturated solutions are a result because of alteration of the saturated solution, i.e. temperature, volume or pressure. Some examples of supersaturation are beer and carbonated water. Water is able to dissolve a lot of carbon dioxide than at atmospheric pressure, which happens at the elevated pressure in bottle. At the state of atmospheric pressure, the escape of the carbon dioxide gas from the supersaturated liquid is quite slow. This process is advanced by the existence of small bubbles which is caused by shaking the product. Rock candy Rock candy is a type of confectionery mineral composed of relatively large sugar crystals. The candy is formed by allowing a supersaturated solution of sugar and water to crystallize onto a surface suitable for crystal nucleation, such as a string or stick In the phenomenon of superheating, the homogeneous substance without boiling is heated at a temperature in which is greater than the liquids normal boiling point. In order for a vapour bubble to expand and consequently burst at the surface (to boil), the temperature heating must be highly sufficient (raised above the boiling point) that the vapour pressure will go beyond the atmospheric pressure. (Patrick 2006) An insufficient temperature that is below will cause the vapour bubble to decrease and so disappear. However, in terms of superheating, the liquid is seen that it does not boil despite having the vapour pressure exceeding the atmospheric pressure. As a result, the surface tension restrains the growth of the bubbles. Boiling chips which are also known as boiling stones or anti-bumping granules are purposely added to the liquid to make boiling easier without the liquid becoming superheated. They are small and insoluble porous stones composing of calcium carbonate or silicon carbide. Inside the stones, they have pores that allow cavities to trap air and supply spaces in which the solvent bubbles can develop (nucleation sites i.e. formation of the vapour bubbles in on cavities). When there is an addition of boiling chips to a solvent and is heated, it would release very small bubbles. These tiny bubbles prevent bumping, loss of solution and hence allows liquid to boil easier without being superheated. Without the addition of boiling chips in a solvent, the heated liquid could be defined as superheated, an unstable state and therefore would be able to release a quantity of bubble of gas all of a sudden or perhaps violently. As a consequence of the sudden expel of vapour from the container of the liquid, it could lead to from ruining of the experiment to causing harsh burns. Ostwald ripening In regards to droplets that are spherical and being in contact with their vapour, the two radii situated in the liquid phase are equal and so maintain positive signs. Therefore in reference to the Kelvin equation, the droplets vapour pressure will be higher than the same liquid with a flat surface. An example is that for a radius of water droplet of 10nm, the increase in vapour pressure is approximately 10%. The smaller the droplets radius, the greater the vapour pressure. (Barnes 2005) For instance, in the case a polydispersion system (droplets with different sizes), the smaller particles has the tendency to dissolve (i.e. have greater solubility) or evaporate attaching themselves onto the surface of the larger ones, leading the larger particles to continue to grow with time but the smaller particles disappearing. This spontaneous process known as Ostwald ripening was first recognised in 1896 by Wilhelm Ostwald. (Ostwald 1896) A real life effect of the Kelvin equation occurs in clouds in which the larger droplets grow expecting to be heavy enough to fall as rain. Similarly, this process also exists for crystals contained in solutions. The larger crystals will tend to grow rather than the smaller ones resulting in a process of Ostwald ripening. This process is an important ageing effect occurring in any polydisperse systems. It could be observed in foams, emulsions as well as aqueous sols. (Adamson 1990) In terms of foam instability, the reason of instability could be due to Ostwald ripening. The Ostwald ripenings driving force arises because of the variation of Laplace pressure between bubbles of unequal size that is the smaller and larger foam bubbles. (Barnes 2005) The smaller bubbles having a greater gas pressure than the larger bubbles causes an effect on the foam stability. For the period of foam storage, the bubbles rise in the gravity field to the top of the liquid due to the large density existing between the liquid and the gas phases. From here, they shape a loosely closed-packed or honeycomb like structure from which the liquid drains forming foam that turns out to be dryer. The thin films created can collapse due to gravity and causing coalescence of bubbles. When increased of gas solubility with pressure happens, gas between bubbles are able to diffuse from the smaller to the larger bubbles. A large bubble in the foam that is surrounded by smaller bubbles could ultimately cause a big hole in the structure of the foam. (Hubbard 2002) Ostwald ripening is the cause of foam instability when a larger pressure difference of foam bubbles that are spherical cam be seen. In the case of polyhedral foam (with planar liquid lamella), the foam bubbles pressure difference is not great and so foam instability is not because of the Ostwald process. (Tadros 2005) Since the surface of the bubble behaves like viscoelastic behaviour, the process of Ostwald ripening in foam bubbles could be reduced by addition of a gas that is only soluble in the liquid. As a result of this process, it also has an effect of decreasing of specific surface area in time due to the highly soluble particles. (Lyklema 2005) The Ostwald ripening is important as it is used to increase the efficiency in both industrial and analytical filtration. (Barnes 2005) Capillary Condensation The Kelvin effect can also be observed in terms of capillary condensation due to the existence of a curvature, a meniscus. Capillary condensation arises because of the vapours adsorption in a capillary which creates a liquid surface with tiny radius of curvature. (Fisher 2002) The liquids vapour pressure being lower than that of the same liquid with a flat surface is a consequence of the radii being positioned in the vapour phase. If the actual vapour pressure is greater than the vapour pressure calculated from using the Kelvin equation for the curved surface than condensation would likely to occur. The actual vapour pressure for a flat surface may possibly be lower than its saturation vapour pressure. (Patrick 2006) As the capillary filled by capillary condensation occurs, immediately a meniscus is generated (which depends on the liquids surface tension) at the liquid-vapour interface enabling the equilibrium to be under the Psat (saturation vapour pressure). At low vapour pressure, the liquid condenses in smaller radius of the capillary. As the vapour pressure increases, further condensation of the liquid at the larger radius capillary is filled causing the radius of the meniscus to increase (capillary becoming full). The Kelvin equation implies that the Pv/Psat rises inside a capillary and the meniscus radius will further expand causing a creation of more flat surface. Hence, the vapour condensation is able to occur smoothly over the range of vapour pressures. For any liquid-vapour interface involving a meniscus, the Kelvin equation therefore relates the change between the equilibrium vapour pressure and the saturation vapour pressure. Capillary condensation as an important factor, is significant by means in both naturally and synthetic occurring porous structures. These structures allow scientists to recognize the concept of capillary condensation to determine pore size distribution as well as surface area through adsorption isotherms. (Barnes, 2005) References Adamson, W 1990, Physical chemistry of surfaces, 5th edn, John Wiley Sons, Canada Barnes, G.T 2005, Interfacial science, Ist edn, Oxford University press, United States CUBoulder Organic Chemistry, 2007, Boiling Chips, viewed 28 March, 2010 Economic expert, 2010, Supersaturation, viewed 28 March, 2010 Farlex, 2010, Kelvin equation, the free encyclopedia viewed 25 March, 2010, Fisher, LR Israelachvili JN 2002, Colloid Interfacial science, 3rd edn, Elsevier LTD, United States Gordon, M 1988, Physical Chemistry, 5th edn, McGraw-Hill, United States Hiemenz, CP 1997, Principles of Colloid and Surface, 3rd edn, Marcel Dekker, United States Hubbard, T 2002, Encyclopedia of Surface and Colloid Science: Por Z, 2nd edn, Marcel Dekker, New York Lyklema, J 2005, Fundamentals of interface and colloid science, 2nd edn, Academic press, London, vol. 2, p. 24 Ostwald, W 1896. Lehrbuch der Allgemeinen Chemie, vol. 2, part 1. Leipzig, Germany. Sinko, PJ 2006, Martins physical pharmacy and pharmaceutical sciences, 5th edn, Lippincott Williams and Wilkins, Philadelphia Tadros, F.T 2005, Applied Surfactants: principles and application 4th edn, edn, Wiley-VCH, Germany. The engineering toolbox, 2005, Introduction to vapor and steam, viewed 28 March, 2010, UBC Chemistry Department, 2002, Boiling Chips, viewed 28 March, 2010 Uci education, 2005, Boiling point and distillation, RDG, viewed 28 March, 2010 https://eee.uci.edu/programs/hongchem/RDGbpdostill.pdf

Wednesday, November 13, 2019

My Home :: Descriptive Essay Examples, narrative

My Home    Each year millions of dollars are spent on therapy because people want to re-live their childhood. These people discover late in life that childhood was the time period where the most meaningful parts of life were. Things from our past don't just fade away, they are part of us, and most people greatly miss them weather they know it or not. My most meaningful place is my parents' house because it is a symbol of reliving my childhood, indulging in good times, and just plain feeling at home.    Childhood is the time in life where personality traits are formed and memories haven't yet taken a sentimental feeling. Now that those times are gone, I remember running through the neighborhood with my friends and many other happy times where I knew I was having fun. The time my brother and I were playing hockey in my living room was fun. It was a friendly game, and we even had the cushions form the couch set up so nothing would get broken. Little did we know one stray puck would have us replacing drywall at 11:30 PM so our parents wouldn't see it, but, like everything else, we did it because it was enjoyment. My theory on life is, in order for something to be meaningful, you have to want it. I don't always want the irresponsible times of discovery that were my childhood back, but I do strive for the feelings I had toward life when I was there. Having a pleasant attitude all the time may not be possible this day in age, but I know it's a good feeling when you can. I can recall these memories at any time, but they are especially present when I am at my home. It's not just because most of these things took place while I was at home, but because I actually feel like I can do everything again while I am there. In this aspect, my parents' home is a giant playground of memories with every toy I can imagine.    I don't live far from this home. I've decided to make it a habit to visit every Sunday with the rest of my siblings that have moved on. I recall lots of fighting when we were children. We weren't dysfunctional or anything, but like most families, the children argued.