Different Cusines I Eat Essay Example for Free

Different Cusines I Eat Essay Eating with the people you love is the most blissful moments you could ever have, and eating your favorite kinds of ethnic cuisines with the people you love†¦ now that’s the best moments you could ever have. One of the delights of life is eating with friends, second to that is talking about eating. And, for an unsurpassed double whammy, there is talking about eating while you are eating with friends. said by Laurie Colwin. Every cuisine had its own taste, culture and history behind every cuisine we eat. My 3 favorite ethnic cuisines are Mediterranean, Far East Asian, and Indian. First kind of ethnic cuisine is Mediterranean. Which gain its name from the countries that border the Mediterranean Sea. The important aspects of the Mediterranean diet are high intakes of grains, fruits, vegetables, olive oil, onions, garlic, fresh herbs, seafood, and cereals, such as nuts, seeds, and dried beans. Cheese, yogurt, fish, and poultry are consumed in low to moderate amounts, and little red meat is eaten. Some of the common/my favorite foods that you might have heard are hummus, pita, chicken/ beef/ lamb kabobs, chicken/beef/falafel shawarma and baklava. Second kinds of ethnic cuisine are the Far East Asian cuisines. Food is an important part of their history and culture. Rice and noodles compose of the important part in the Asian cuisine. Besides, Asians’ daily meals consist of six food groups: grains (or starch staples), vegetables, fruits, legumes, meat, and spices. Asian cooking has developed into a very sophisticated art because Asian food also focuses on the harmony of sight, smell, taste, and texture. Moreover, color, aroma, and flavor are not the only the key elements in Asian cooking; nutrition is also highly concerned for most Asian dishes are cooked with meat and vegetables together, so the foods are low in calories, high in nutrients, invariably well balanced. In addition, the different climate and agriculture from East to West and North to South, and various cooking methods, such as roasting, boiling, steaming, stewing, and stir-frying create several kinds of Asian cuisine. Third kind of http://componchu. blogspot. com/2005/06/my-final-essay-for-this-semester. html http://jpgmag. com/stories/18131.

Synthesis and Properties of Liquid Crystals for VAN

Synthesis and Properties of Liquid Crystals for VAN Synthesis and properties of liquid crystals for vertically aligned nematic (VAN) displays Introduction Liquid crystals where first observed in 1853 and 1855 by Rudolph Virchow and C. Mettenheimer respectively, both observed a flowing fluid like compound which was birefringent (brightly coloured) between cross-polarisers much like a crystalline solid, hence the compound was both liquid and crystal thus liquid crystal. [3, 4]. It was not until the late 1980’s that Liquid crystals and their truly fascinating fundamental properties began their tremendous success in commercial applications.1–5 Subsequently giving rise to the vertically aligned nematic (VAN) mode in the early 1990’s. The liquid crystalline phase can be best described as a hybrid of the two most common phases of matter, Liquids and Crystals. LC compounds diffuse about much like the molecules of a liquid giving them a fluid nature, combined with this they manage to maintain a small magnitude of orientational order and sometimes some positional order in a similar manner as a crystalline solid would. Hence, liquid crystals are anisotropic fluids. Properties of Liquid crystals and the nematic mesophase The nematic phase of calamitic (rod like) liquid crystals is the simplest liquid crystal phase. In this phase the molecules maintain a preferred orientatioanl direction as they diffuse throughout the sample. There is no positional order in the phase as depicted by figure 1.1. Synthesis of Liquid Crystals General Synthesis Generally, the most common liquid crystals are based on aromatic sub units due to their ease of synthesis and obtainability. The vast majority of LC building blocks are commercially accessible or fairly simple to synthesize via electrophilic substitutions such as Friedel-Crafts acylation, bromonation and nitration. For those functional groups that cannot be directly substituted interconverions usually take place with bromine often being the chosen leaving group (e.g., CO2H, NH2, CN and OH). Due to the individual nature of substituents their specific directing effect and a specific effect on the rate of reaction must be taken into consideration. By taking this into account reactions must be carried out in the appropriate order to arrive at the desired product. Figure 1 Electrohpilic Substiutions of Benzene A key advancement in synthesis arrived with the recognition that a wide range of intermediates could be efficiently prepared from alkyl-bromo-benzenes due to the ease of conversion of the bromo substituent into a previously inaccessible groups. From a range of synthetic methods described in scheme 1 a valuable number of carboxcylic acids and phenols can be prepared. This follows on to the synthesis of multi-aryl LC materials where esterification (see Scheme 2) is employed to couple multiple aryl units. Esterification commonly occurs in two processes firstly, the traditional method (Method A) of converting the carboxcylic acid into the acid chloride derivative with either thionyl chloride or oxalyl chloride. The acid chloride is then reacted with the phenol in the presence of a base to remove the hydrogen chloride as it is formed. The second and more recent method (Method B) involves an in-situ reaction which uses N,N-dicyclohexylcarbodiimide (DCC) to activate the acid towards nucleop hilic attack from the phenol and a proton transfer catalyst ( 4-(N,N-dimethylamino)pyridine ) (DMAP). Scheme 2 Esterification coupling reaction LC materials with multiaryl cores (e.g., biphenyls and terphenyls) are somewhat more difficult to produce due to the direct bond between aryl sections. However, the development of palladium-catalysed cross-coupling reactions has created a means in which to form the direct carbon-carbon bonds needed. There are a vast number of methods to facilitate the generation of these carbon-carbon bonds but by far the most prolific involves the use of aryl bromides (4) and arylboronic acids (5). Figure 3 Palladium catalysed cross-coupling Alternative to the use aryl bromides are the aryl iodides, there increased stability as a leaving group provide a reaction pathway with an increased rate of reaction. Chloro and triflate are also other viable leaving groups, where the triflate group is essential in the synthesis of alkenyl-substituted LCs. Perhaps the most important palladium-catalysed cross-coupling reaction is the selective coupling that can occur by using a bromo-fluoro-iodo-substituted system (see Scheme 4) Figure 4 Dicouplong reactions of Benzene derivatives As the iodo group is a better leaving group it can be coupled with an arylboronic acid, following purification a second coupling reaction can occur on the bromo site giving rise to the synthesis of LC materials with more than two aromatic core units. In order to control the mesomorphic and physical properties of LC lateral substitutions are often employed, the fluoro substituent is the most commonly used lateral unit, as it is electron withdrawing in nature it renders adjacent H atoms acidic and thus making them vulnerable to strong basic conditions. By taking advantage of this vulnerability the desired functional groups for example the boronic acids needed for cross-coupling reactions are far more easily obtained. The only consistent approach for introducing a fluoro substituent into an aromatic system is via the diazotisation and successive fluoronation of the chosen aromatic amine, which in turn generated from the reduction of the nitroarene generated from the nitration of the bas ic aryl unit. Nonetheless, a broad variety of simple fluoro-substituted materials can be easily acquired commercially and thus synthesis often begins with fluro substituents already present (see Scheme 5). Unfortunately this gives rise to complications when trying to introduce terminal alkyl chains to the fluorinated compounds. Accordingly, a different approach is required and thus bromo-fluoro-iodo-benzene units are needed for successful synthesis of fluoro-substituted LC materials. Scheme 4 shows some reactions of these units to synthesis some adavance LC materials. The finishing touches Liquid crystals for VAN mode displays must have one vital property in order to be considered for this application, negative dielectric anisotropy. Negative dielectric anisotropy can be introduced by creating a strong lateral dipole within the LC material this is done by introducing lateral groups with high electronegativity such as fluorine as explained previously in this section, lateral chloro substitutents have also been considered in order to create negative dielectric anisotropy as they create a greater dipole than fluorine. However, the greater size of the chloro substituent renders it of little use as this subsequently gives the material low liquid crystal phase stability and high viscosity making it useless in VAN mode displays. Figure 5 Subsitution reactions of difluroaryl compounds Vertically aligned nematic (VAN) liquid crystal displays About the VAN displays The vertically aligned nematic (VAN) mode first came into development in the early 1990’s, first generation LC materials were based on rod like molecular structures and managed to achieve fast switching times of around 25ms. Unfortunately, the early attempts to introduce displays of this kind failed. This was for two major reasons, a switching time of What makes up a VAN display? VAN devices are made up of two parallel glass plates separated by a small gap of 3-10Â µm containing the nematic liquid crystal phase, on the top piece of glass sit a thin film of material which polarises a light that passes through it. On the inside of the top piece of glass there is a indium oxide (ITO) layer which acts as a conductor, this layer is linked to a surfactant. The inner layer of the bottom piece of glass is also coated with the ITO layer and the surfactant. The surfactant enables the liquid crystal to be connected with the conductor thus enabling the flow of a current. The display can be designed to be either passive or active. When passive the display does not generate any light itself it instead uses ambient light from surroundings which is reflected by a mirror like surface below the bottom piece of glass. When designed to be active the display is built with a light source behind the display which passes directly through the display rather than being reflected Working principle of VAN displays The average molecular orientation (director orientation) without the electric field is perpendicular to the substrate of the display. With this homeotropic orientation and crossed polarizers, the VA mode is working in the so called normally black mode. For the incident light the liquid crystal in the off state behaves like an isotropic medium (the light sees only the ordinary refractive index). As a consequence very good black states can be achieved independent of the wavelength of the light and the operating temperature. Pixel and electrode design of VA displays allow for a high aperture ratio resulting in a high brightness of the display. These two points are the main reason for the good contrast of VA LCDs.. Since the directors are oriented homeotropically in the off state, they can be tilted randomly in any direction by the electric field. This leads to disclination lines between domains of equal orientation, thus deteriorating the optical performance. Figure 6 VA Mode working display As VAN displays use LC materials with negative dielectric anisotropy, application of a voltage to the ITO films cause the director to tilt away from the normal to the glass surfaces as show in figure 2. This introduces a birefringence because the index of refraction for light polarised parallel to the director is different from the index of refraction for light polarised perpendicular to the director. Some of the resultant elliptically polarised light (all of it if the retardation is 180) passes through the crossed polariser and the display appears bright. In fact, since the retardation depends on the magnitude of the voltage applied to the display, this type of display can be used to produce a range of intensities of light. This is called a grey scale. For VA you have perfect black in the off-state and if apply a voltage the VA materials moves into the parallel position and this is bright. Therefore, you get a better contrast ration in VA displays. The second advantage is the switch ing process. It’s intrinsically faster to move the molecules this way.

The Radical Period of The French Revolution Essay -- European Europe H

The Radical Period of The French Revolution By the end of 1971, Europe was preparing to witness the end of a seemingly triumphant revolution in France. The country was restructuring its government in a forceful and bloodless manner, while the tyrant King Louis the XVI agreed to the demands of the masses (albeit without much choice). However, due to the fanatical aspirations of men such as Danton, Marat and Robespierre,it would be only a matter of months before the moderate stage of social and political reform was transformed into a radical phase of barbaric and violent force. In their quest for freedom, equality and fraternity, the leaders of the Jacobins inadvertently turned the revolution into an oligarchic dictatorship that threatened to destroy all that was achieved in the previous two years of insurrection. The revolution took a sharp turn on August 9th, 1792. The Municipal government was overthrown in Paris and a Commune was established by the leaders of the radical forces. During this time there were continual food riots erupting in every area of the country and, with the threat of war against Austria and Prussia looming, it was vital that order was to be maintained during such tumultuous times. Although the constitution was already enshrined and the citizens had their freedom and liberties, there was still plenty of public dissent and disapproval as to whether or not these laws would help create a new government and prevent the country from breaking apart. The people had come this far and were not prepared to watch their efforts lead to failure or the restoration of an absolute monarch. As a result, the radical forces were able to gain the support of the citizens in declaring that the ... ...) who allegedly opposed the will of the Jacobins, and therefore opposed the will of the republic. Robespierre never intended to justify his ends through such violent means. 1793 marked a year that could have been prevented, a period that should never have befallen the liberated citizens of France. Mirabeau warned that the destruction of the Monarchy would plunge the country into anarchy and his words rang true. France was not prepared for such social and political upheaval, and the resulting shift towards a republic would change the country forever. The Jacobins discarded their holy bible, the constitution, in order to ensure the security and stability of the country. Not only did their hasty actions backfire, but the tens of thousands of lives that perished during their reign symbolized the radical stage of the revolution in all its bloody glory.

Patient X Essay

Patient X’s doctor has been trying to convince him to practice better lifestyle habits to for several years to help combat his hypertension (on antihypertensive medication for 3 years), diabetes (6 years) and growing waistline. A recent routine check-up revealed a deterioration of his lipid profile (TC 260, TG 310, HDL 29, LDL 170) and fasting glucose of 172. Patient X is 55 years old, weighs 245 lbs and he is 5’10 . 1) Hypertension: Weight control to lower the risks associated with hypertension include a diet low in sodium and high in potassium. The risk of hypertension is lower when salt intake is lower and potassium helps reduce blood pressure by increasing the amount of sodium excreted in the urine. The DASH eating plan is the best option for maintaining hypertension. Physical activity is also a major lifestyle modification that should be adopted. Engaging in regular aerobic physical activity such as a brisk walk will lower the risk of hypertension. Diabetes: A diet to help control diabetes also focuses on weight management. Low glycemic index diets have been shown to reduce complications associated with diabetes. Exercise is also a key factor to controlling diabetes. A 3-5 days of the week exercise, which focuses on caloric expenditure and duration rather than intensity, has been proven to increase insulin sensitivity and glucose tolerance. *Exercise can reduce other risk factors such as weight control, lipid profile, and hypertension. Lipid Profile: Elevated triglycerides are best treated with increased physical activity and weight reduction. Aerobic exercise, weight reduction, smoking cessation, and moderate alcohol consumption will favorably affect HDL-C and lower LDL-C. After comparing these three aspects, it is easy to see that a diet focused on weight management, smoking cessation, and physical activity involving aerobic exercise will greatly lower Patient X’s risk factors for hypertension and diabetes. 2) Suggesting that Patient X begin the DASH diet would be the first place to start. The DASH diet includes an easy-to-use chart which helps plan menus. It also includes items that people generally like to eat, just in less moderation and with more fruit and vegetables. To help Patient X quit smoking, there are prescriptions or over the counter patches that will allow cessation. There are also therapy groups that Patient X could try if addiction proved to be too great. Exercising with someone, a friend or significant other is always easier than exercising alone. I would suggest that Patient X find an exercise buddy and possibly start a gym membership. If they feel this isn’t the right choice for them, then even walking around their block for 30 minutes allows some form of aerobic exercise in their life. After 6 months I would expect to see a lower blood pressure if Patient X had indeed been participating in physical activity. Improvement in blood pressure among hypertensive, takes effect within the first few weeks. I would also expect to see major improvement in total cholesterol, LDL-C, and triglycerides if the proper diet was maintained. I would also expect to see an increased insulin sensitivity and glucose tolerance. A drop in BMI will also be indicated.

Frogs Amphibian and Essays Research Papers

Frogs Amphibian and Essays Research Papers Frogs: Amphibian and Essays Research Papers Frogs are usually small animals that have smooth, moist skin, bulging eyes, and external eardrums behind the eyes; the adults lack a tail. Frogs have long hind legs, and most species can take long leaps. Many species also have webbed feet, making them excellent swimmers. Most frogs, especially males, are quite vocal. As the frog forces air through the voice box, or larynx, the vocal cords vibrate to make calls distinctive of its species. A much louder sound is produced by the males of species that possess vocal sacs, which swell enormously when the frog calls to attract a mate.... [tags: essays research papers] 413 words (1.2 pages) FREE Essays [view] Frogs - Frogs are needed for everyday life. They are part of pond life. Each animal is important because even in the pond, there is a food chain. Frogs are amphibians, animals that spend half of their lives under water, and remainder on land. The first frog appeared in the early Jurassic period about 200 million years ago. Frogs live on every continent except Antarctica, but tropical regions have the largest amount. Like all amphibians, frogs spend half their lives near water because they must return to the water to lay their eggs.... [tags: essays research papers fc] :: 1 443 words (1.3 pages) FREE Essays [view] Frogs - Frogs are amphibians in the order Anura. The order Anura is broken down into 22 different families of frogs and toads. Although they belong to the same order, frogs and toads are different in a lot of ways. Some of the more distinct differences are their skin and where they live. Frogs usually have smooth moist skin and toads usually have dry watery looking skin. Frogs spend most of their lives in or near water and toads spend more time on land. Amphibian means "double

How to Grow Color Change Crystals

How to Grow Color Change Crystals If you enjoy growing crystals, try this simple project that produces large crystals that change color from yellow to green to blue depending on light and temperature.   The crystals grow over a few hours to overnight and are sure to amaze! Color Change Crystal Materials Two chemicals react to produce the color change in the crystals: 10 grams potassium alum (potassium aluminum sulfate)3 grams red prussiate [potassium hexacyanoferrate(III)]50 milliliters hot water Alum is easy to find, but youll likely need to order red prussiate online. Another option is to simply order a color change crystal kit. The one by Thames and Kosmos is reliable and includes a total of three experiments. Prepare the Solution and Grow Crystals In a small clear container, simply dissolve the potassium alum and red prussiate in 50 milliliters of hot water. It make take a few minutes for the salts to fully dissolve. If you still have undissolved material after a couple of minutes, you can carefully set your container inside another larger container of very hot water, to act as a hot water bath and help the salts dissolve.Once the chemicals are dissolved, set your container of chemicals in a location where the crystals can grow without being disturbed.Youll start to see tiny crystals after 30 minutes to a couple of hours. Crystal growth should be complete overnight to a couple of days, depending mostly on temperature and the humidity of the air. At this point, the crystals will be yellowish green or green, depending on the temperature at which they grew.When you are satisfied with the crystal growth, use a spoon to remove the crystals from the container. You can set them on a saucer to dry. Dispose of the chemical solution by pouring it down the drain and rinsing with water. The easiest way to observe the color change is to divide the crystals between two containers. Place one container in a dark cabinet or closet and put the other container on a sunny window sill.Check on your crystals each day. Over time, the crystals in the sunlight will change color from yellow to green to blue. The crystals in the dark will remain yellow. The color change could take a couple of days, but in my experience, you see it within an hour or two. When I took the photo, the crystal on the left was canary yellow, but darkened to yellowish green under the bright lights How Color Changes Crystals Work Light and heat supply the energy to cause  a chemical reaction between the alum and red prussiate to produce Prussian blue or Berlin blue. This is an iron-based dye still in use today for blue ink cartridges and paints. Make Prussian Blue InkUse Prussian Blue in a Crystal Garden Safety Information The chemicals used in this project are safe to use, but you should wash your hands after handling the crystals, because the red prussiate and your crystals contain iron, which can be toxic if you get too much. Keep the chemicals and crystals out of reach of pets and young children for this reason. The kitchen is a perfect place to mix the solution and grow crystals, but be careful you dont get burned by the hot water and be sure to keep the chemicals and crystals away from food. Rinse any kitchen cookware you use so it doesnt have chemical residue. More Chemicals That Grow Crystals

Beverly Cleary Childrens Book Author of Ramona Quimby

Beverly Cleary Children's Book Author of Ramona Quimby Beverly Cleary, who turned 100 years old on April 12, 2016, is the beloved author of 30 childrens books, some published more than 60 years ago, all still in print, along with two autobiographies. She was honored by the Library of Congress in 2000 as a Living Legend and has won numerous awards for her childrens books, including the John Newbery Medal and the National Book Award. Childrens books by Beverly Cleary have delighted children, particularly 8 to 12-year-olds, for several generations. Her humorous, yet realistic, childrens books about the ordinary lives of children, along with such appealing characters as Ramona Quimby and Henry Huggins, have captured the interest of children around the world. Beverly Cleary has written 30-plus books, including three about a feisty mouse. Her books have been translated into more than a dozen languages. In addition, Ramona and Beezus, a movie based on Clearys Ramona Quimby and her older sister, Beatrice Beezus Quimby, was released in 2010. Beverly Cleary and Her Award-Winning Childrens Books Beverly Bunn was born April 12, 1916, in McMinnville, Oregon and spent her early years in Yamhill where her mother started a small library. Thus began the authors lifelong love of books. Her family moved to Portland when Beverly was six years old; she was delighted to find a large public library. Beverly went on to study library science at the University of Washington in Seattle and became a childrens librarian. In 1940, she married Clarence Cleary. Beverly Clearys first book, Henry Huggins was published in 1950 and was inspired by a boy who complained to the librarian that there werent any books about kids like him. It, and the other books about Henry Huggins and his dog Ribsy remain popular today. Her most recent book, Ramonas World, was published in 1999 and features one of her most beloved characters, Ramona Quimby. The first movie based on Clearys Ramona Quimby, Ramona and Beezus, centers on grade schooler Ramonas relationship with her older sister, Beatrice. This relationship is a part of all of the Ramona books, but most particularly in the book Beezus and Ramona. Beverly Cleary has won numerous awards, including the John Newbery Medal for Dear Mr. Henshaw.   Two of her books about Ramona Quimby, Ramona and Her Father and Ramona Quimby, Age 8 were designated Newbery Honor Books. Cleary also received the Laura Ingalls Wilder Award in honor of her contributions to childrens literature. If thats not enough, her books have also won about three dozen statewide childrens choice awards and she won the National Book Award for  Ramona and Her Mother. The Klickitat Street Books of Beverly Cleary When she was a child, Cleary noticed that there didnt seem to be any books about children like the ones who lived in her neighborhood. When Beverly Cleary began writing childrens books, she created her own version of Klickitat Street, a real street near her childhood neighborhood in Portland, Oregon. The children who live on Klickitat Street are based on the children she grew up with. Fourteen of Clearys books are set on Klickitat Street, beginning with her first book, Henry Huggins. While Henry was the focus of the first books, a number of Beverly Clearys books also highlighted Beatrice Beezus Quimby and Beezus little sister, Ramona. In fact, Ramona has been the title character in the last seven of the Klickitat Street books. The most recent Ramona book, Ramonas World, came out in 1999. HarperCollins published a paperback version in 2001. With a fifteen-year break between Ramonas World and the last previous Ramona book, you might be a little apprehensive about a lack of continuity.  But in ​Ramonas World, as in her other books featuring Ramona Quimby, Cleary is right on target as she addresses, in typically humorous fashion, the vicissitudes of the life of Ramona Quimby, now a fourth grader. Beverly Clearys books have remained popular because of characters like Ramona. If your children havent read any of her books, nows the time to introduce them to Clearys books.   They might also enjoy the movie version, Ramona and Beezus.