Friday, September 6, 2019
Purpose and Meaning of Education Essay Example for Free
Purpose and Meaning of Education Essay Poverty is my pride, struggle is my way of life, education is my weapon and love of Allah is my strength. (Hazrat Mohammad PBUH). Education in its general sense is a form of learning in which knowledge, skills, and habits of a group of people are transferred from one generation to the next through teaching, training, research, or simply through auto-didacticism. Generally, it occurs through any experience that has a formative effect on the way one thinks, feels, or acts. Islam has put great stress on Education. The very first word of the first revelation was Iqra means read. The Holy Quran emphasizes more that seeking of knowledge is compulsory upon every man woman. Islam has given very clear instructions for the Education and has made it compulsory for all the genders equally. The purpose of education according to Islam is to serve the humanity in every possible way and lead a peaceful life by obeying the commandments of Allah (the only creator of the entire universe). Lack of education is the root cause of every trouble and misery. It is education only by which we can bring change, peace as well as prosperity in the world. Our aim should be clear in this regard that the only possible way to make human life as better as we can is education only. We know very well that education is the only weapon which is the best anti-biotic to every evil cause. We can destroy every evil strength through this weapon and bring desirable changes in every part of the globe. Today when we look at the world we find it divided on the bases of religion, race, colour, caste, creed and tribe. Sectarian and ethnic discrimination has drawn the boundaries of hate and egotism. We can overcome all these by spreading education in the entire world and make it a way towards social and global brotherhood on the basis of humanity. Past history proves that human is the most furious creature on this planet which is why today we see this bloody picture and insecurity all over the world but if we adopt the education in our characters and deeds we can surely make this world a better place to live on. When we speak about standard education it means there should be same and qualitative education across the world so that every human being can seek it in the very same like others do. Standard education will destroy the poverty, misery, and hunger from the world. No any other human doctrine can stop the destruction of human beings except the education as it the need of the hour as well as the only way for the survival of humanity. Conclusion. From the above mentioned facts and realities it is quite clear that the meaning, purpose and cause of education should be to serve the humanity without any kind of discrimination on the basis of equality so that we can make our world a place better to live on peacefully and purposefully.
Thursday, September 5, 2019
Enzyme-linked immunosorbent assay (elisa)
Enzyme-linked immunosorbent assay (elisa) Enzyme-Linked Immunosorbent Assay (abbreviated as ELISA), is a kind of immunoassay technique to detect the presence of a specific antibody or antigen in the test samples. This method principally make use of both immunological reaction (the antibody-antigen reaction) to detect the present of specific antibody or antigen) and biochemical reaction (the enzyme substrate reaction) to produce a visible signal for both qualitative and quantitative measurement. The ELISA method used in this experiment is an example of indirect ELISA method. The ELISA plate wells are coated with optimized concentration of antigens before hand by means of charge interaction or with the help of a spacer coating (eg. L-lysine). Then the plate wells are washed with buffer solution, and a blocking step is preformed by adding bovine serum albumin or casein, to block any uncoated space in the well before using to detect antibodies in sample serum. Then the sample serum is added to detect the present of specific antibody, the antibodies will bind to the antigens in the well (in this experiment is the anti-DNA antibody). Then a secondary antibody (usually raised from a species against the antibody of the sample) with enzyme-linked (called conjugate) was added to bind. The enzyme used may be Alkaline phosphate or Horseradish peroxidase (in this experiment is Alkaline phosphate); this also serve as signal amplification step as the enzymes conjugate chose used usually have more than one binding sites for the substrate added subsequently. Then a substrate is added for the enzyme to produce a color reaction (in this experiment is the PNPP which produce a yellow color) to indicate the present of the specific antibody in the sample. The higher the concentration of the antibody in the test sample, the stronger the color developed. We can use a spectrometer (an ELISA reader in this experiment) to measure the color quantitatively instead of using our eye, which is more objective and accurate. Washing with buffer (usually a mild detergent) is applied between steps to remove unbind antibodies to avoid non-specific binding of antibodies. Usually positive and negative controls will be paralleled run with the test sample to validate the result. The cut-off point between a positive or negative result is usually determined statistically with known standards. In additions, with a serial dilution of a known standard (known concentration of the specific antibody want to detect in the test), we can also find the amount of the specific antibody in the test sample from the graph of absorbance against concentration of the known standard. Thus, the ELISA method can produce both qualitative and quantitative result in detecting the specific antibody in test sample. ELISA is a relatively high sensitive and specific test for detecting serum protein, the presence of specific antibody or antigen; and also considers as a high-throughput immunoassay. The use of ELISA also includes hormones and infectious antigens (including virus and bacteria). The most common example is detecting HIV in patient samples. In addition, it has the advantage of using non-radioactive substances, is safer than those radio-immunoassays. Other ELISA methods: Sandwich ELISA (or direct ELISA) is used to detect antigen in sample serum, is less-common. With known quantity of capture antibodies coated to the well, the antigens in the sample will bind to the antibodies to form complex. Then enzyme-linked primary antibodies will be applied to detect the present of the antigens. Competition ELISA is a different method from the indirect and sandwich ELISA, in which the kit contains enzyme-linked antigen rather than enzyme-linked antibody. The labeled antigen will compete with the antigen in the sample for the antibody binding sites in the well. Thus, more antigens in the sample will give weaker signal as less labeled antigen can bind to the antibody binding sites in the well. The advantage of this method is can be used to detect antigen in impure samples. Reverse ELISA is a new technology using immunosorbent polystyrene rod with protruding ogives. This ogives will dipped into the sample, thus a higher sample volume can be used to improve the sensitivity. Moreover, the ogives can be sensitized with different reagent to detect different antibodies or antigens simultaneously for multi-target assays.
Wednesday, September 4, 2019
Discussing Neumans System Model and its Application
Discussing Neumans System Model and its Application One of the most important contributions in the field of nursing is the publication of the Neumans System Model. Betty Neuman, a nursing theorist believes on a comprehensive wholistic and systematic perspective on learning. She aims to develop a system that will help introductory nursing students to learn the course and develop their over-all being. She assumes the existence of certain stressors where in certain preventions must also be formulated. This paper will present a brief background on the life and published works of Neuman. This will also include a detailed discussion on her systems model and the factors to consider when applying the model to certain situations. Lastly, given this model, how would a nursing student apply this to her current practice. 1. Introduction/Background a. Life/ school Betty Neuman, born in Ohio US has obtained her diploma as Registered Nurse in People Hospital School of Nursing (Ohio) in the year 1947. She worked in California as a head nurse and hospital staff, industrial nurse and school nurse. She has also engaged in clinical teaching in the following areas: communicable disease, medical- surgical and critical care. b. work/academic achievement/experiences She finished her baccalaureate degree with distinction in nursing in the year 1957. And in the year 1966, she received her masters degree in Mental Health, Public Health Consultation, from UCLA. In the year 1985, he received her doctoral degree in Clinical Psychology ffrom Pacific Western University. With this she started to incorporate and become pioneer in incorporating nursing involvement in mental health. She developed a model from in response to the needs of graduate nursing students who wished to have a course or a program that will expose them to an in-depth breadth of nursing problems. With this, she created a conceptual framework or model for nursing that has been initially published in the year 1972 entitled: Model for Teaching Total Person Approach to Patient Problems in Nursing Research. Along with this model, she refined and reviewed some aspects in for her published book entitled: The Neuman Systems Model: Application to Nursing Education and Practice. Neumans model has been reviewed as holistic, comprehensive, flexible and system based perspective for nursing. It primary attention has been focused on client response system towards the potential and actual environmental stressors. And she used all steps from primary to tertiary nursing prevention, intervention for retention, maintenance and attainment for a holistic wellness of clients. c. List of few works that is published. The Neuman Systems Model This work was published in the Nursing Research in 1872. She developed this model as a way to teach introductory nursing course to beginning nursing students. This aims to provide wholistic overview to the four aspects of a person. These four aspects are psychological, physiological, developmental and sociocultural. DESCRIPTION OF THE MODEL The Neuman Systems Model presents a systems-based framework for viewing individuals, families or communities. It is based on general systems theory with the client viewed as an open system, which reacts and adapts to both internal and external stressors. à NSM is based on numerous concepts and sub concepts, some of which are: stress, adaptation, homeostasis, levels of prevention, intra, inter and extra personal factors, optimal wellness and basic structure. The following description of the model is a brief summary of the description found in the original publication (Neuman Young 1972) with examples added by the authors. In this explanation of the model the client will be considered to be an individual. The client system is represented by a series of solid and broken circles. The central circle is the basic structure or energy source, which includes basic survival factors common to the species. Some examples are genetic response patterns, strengths or weaknesses of body organs and normal temperature range. The basic structure also consists of characteristics which are unique à to a given individual or client such as innate musical talent. The outer most solid circle is referred to as the à normal line of defense and represents the individuals normal state of wellness or the usual state of adaptation, which the person has maintained over time. à The broken line outside the normal line of defense is the flexible line of defense. It acts as a buffer or protection to the normal line of defense. Ideally it will prevent stressors from invading the client system by blocking or defusing stressors before they are able to attack the normal line of defense. The flexible line of defense is accordion like in its function. When it is expanded greater protection is provided. When it is narrowed and therefore closer to the normal line of defense, its ability to protect is diminished. The NSM also includes the concept of prevention at the primary, secondary and tertiary levels. This concept is of particular importance to those who work in the helping professions. Interventions can occur at a primary level to strengthen the flexible line of defense, at a secondary level to help restore the client system to equilibrium by treating symptoms that occur after penetration of the line of defense by a stressor or a at the tertiary level to prevent farther damage and maintain stability after reconstitution has occurred. INTERDISCIPLINARY FIT Although use of interdisciplinary teams is not new to health care industries, it has gained increasing favor in the environment à of health care reform as evidenced by governmental recommendations and guidelines (U S Bureau of Health Professions, 1995) and position statements from professional organizations (American Association of Colleges of Nursing, 1995). The trend in nursing is to collaborate with other health care disciplines as well as with clients. Use of à interdisciplinary health care (IHC) teams can facilitate the emergence of holistic client care goals from teams of diverse health care specialists. Upheaval in the health care industry is affecting à all health professions. In the movement for health care reform, emphasis is being placed on such things as the need for health promotion, coordinated care, and reduction in cost. Some of the watchwords are prevention, wellness and healthy lifestyles. Concepts in the NSM are parallels to those watch words. Therefore, it is not surprising that use of the N.S.M. as a framework for interdisciplinary health care practice is increasing, not only in the United States but also around the world. In Neuman (1995), Lowry, Walker and Mirenda state the following: à The Neuman Systems Model is clearly poised and ready for the challenges of the future. Sometimes characterized in the past as too broad, complex and comprehensive, the model is coming in to its own with the challenges of the 21st century. The complexities of the global society, of crises in health care delivery, and of changing patterns and dangers from the environment provide stimulus for new applications of the Neuman Systems Model. The model is not à only broad and comprehensive enough to provide structure for nursing interventions, but also for other disciplines interested in focusing on wellness and holistic care for patients and clients . . . . The ongoing use and scholarly development of the Neuman Systems Model in practice, education, FACTORS TO CONSIDER WHEN INCORPORATING THE NSM Understanding the Model Understanding the model is the first step to incorporation of the NSM in any à practice setting. There is much à flexibility in how this can take place, such as providing classes with an expert lecturing on the model, sending staff to NSM symposiums, holding a series of classes in which lecture and discussion focus on various aspects of the N.S.M. or taking the approach used by the authors à in which team members used the model to develop treatment protocols for actual cases. During the practice sessions, cases from team members lived experience quickly and effectively brought the NSM from the level of theory to that of application and allowed the team to experience the fit of the model to their institution and individual philosophies. Learning the Language of the Model Learning the language of the model is not a significant problem for most health à care professionals. As stated earlier, the model promotes synthesis of knowledge from areas of study which form the matrix for nursing education. That matrix has elements common to the educational foundations of other health care professions. Each of the five variables, i.e. physiological, psychological, socio-cultural, developmental and spiritual, is associated with a field of knowledge that forms the base for practice in some health care related profession. For example, medicine, psychology, physical therapy, social work, and marriage and family counseling, share portions of the educational matrix associated with nursing. Thus they are able, for the most part, to speak the language of the NSM, and make major contributions to an interdisciplinary health care team which uses the model. However, because of the breadth of à the NSM, other theories, some of which are profession specific, can and must b e related to the assessment and intervention processes. All team members must be sensitive to the particular language of their discipline (Morrissey, 1989) and must clarify to other members where appropriate. A common language will assist in development of unity among team participants. à It is helpful to establish as a group norm the expectation that each member is responsible to ask for and expect to receive clarification of all unfamiliar terminology used by any other team member. It is not unusual for clergy to have an educational background dissimilar to that of the health care professions. The spiritual expert on our team, a professor of religion who is also a lay minister, was the team member least familiar with terminology used in the NSM. Conversely, other members of the team were at times unfamiliar with certain religious terminology. In those instances when team members have dissimilar backgrounds, extra time and effort may be required for the team to learn to speak a common language. In summary, the primary reason the NSM adapts well to interdisciplinary use is because it was developed on the premise that the practice of holistic health care must be built on a foundation à of synthesized knowledge and interdisciplinary cooperation based in a common language and dynamic systems concepts (Neuman Young 1972). APPLICATION IN EDUCATION The team member, who represented expertise in human development, has developed and taught an interdisciplinary undergraduate course in general systems theory using the NSM as the main example for application of general systems theory in the clinical setting. Using the NSM, a case study and the Interdisciplinary Assessment Form, students assess the clients needs and determine which member of an interdisciplinary health care team would be the most appropriate care coordinator for the client. The team has developed a proposal for an honors course which would be open to any honors student interested in the health care professions or behavioral sciences. The course will be built on the à NSM and emphasize use of an interdisciplinary team for assessing and intervening in à client problems. A case study approach will be used. All members on the team will à participate in teaching with each member presenting information related to his/her major area of expertise. At the administrative and faculty level, interest in this course is generated by a desire for increased interdisciplinary activity on the Brigham Young University campus. INCORPORATING THE MODEL WITH MY DAILY PRACTICE Given this Neuman Systems Model and as a sub-acute practice nurse, I can apply this by following these steps: 1. Understand that my patients are unique and different from one another. One may respond to one stressor in a heavy manner and another may not. 2. Since I am a sub-acute nurse, and I am dealing with patients that are recovering from previous illnesses, I will assume that all stressors, light or heavy will contribute à a big factor on the recovery of my patient. This conjecture will help me not to be complacent with handling my patient. 3. Improve my communication with my patient by asking him or her about the stressor he or she experiences. Identify and evaluate the situations or events that contributes to this stressor. 4. Make an effort in researching and working on the proper preventions for the stressors my patient is exposed to. 5. Bear in mind that every little thing I do affect the wellness or illness of my patient. The theory emphases the wholistic care for better welfare and wellness to the patient as well to the health provider (doctors, nurse and sabacute nurse), just like other interventions it would brings enrichment to the patient and to its provider leading to areas that would increase the specialization. In this case as a sabacute nurse it is a better opportunity to enhance my daily work because it will support and develop my skills. SUMMARY This interdisciplinary health care team experience has enhanced the level of our professional expertise and has enriched both our professional and personal lives. The experience of coming together for the good of the client has its own intrinsic value. We believe that, with a history of increasing health care specialization and compartmentalization, the work of interdisciplinary health care teams using a wholistic model of care is one of the few health care options leading toward increased levels of wellness for all people in all countries.
Reintroduction of the Lynx Does More Harm Than Good :: Argumentative Persuasive Topics
Reintroduction of the Lynx Does More Harm Than Good à à à à à There I was, standing face to face with the bobtailed lynx. It was looking right at me and licking its chops with delight. It seemed as if the beast was thinking "Lunch" on this cold, gray December day, but I wasn't worried about being attacked. The reason for this was the fact that this was a domestic lynx that just happened to be on the other side of a stout metal cage, so there was no chance of the lynx getting a hold of me. à à à à à At one time, the lynx lived all the way along the Continental Divide clear up into Canada. Now, after being gone from Colorado for 25 years, the animal has been reintroduced into the lower tip of the lynx's historic habitat, the San Juan Mountains (Rogers). So far, out of 33 lynx that are being tracked, all of them are roaming in 276 square kilometers of the southwestern portion of Colorado that runs from the New Mexico border up to the I-70 corridor and from Monarch Pass over to Taylor Mesa (Shenk). In an attempt to find out how the animals, which look like bobcats with black tufts on their ears and huge paws, act in nature, scientists are tracking them with radio collars and airplanes (Lloyd). à à à à à Now, just a couple of years later, the Colorado Division of Wildlife is planning to release over 180 more lynx into the Colorado wilderness within the next five years. However, out of nearly 100 Canadian Lynx that have already been released so far, about half of them have died and none of them have reproduced. With the type of results that the process has received so far, the agencies involved in the reintroduction process should stop reintroducing the lynx into Colorado. Instead, they should try to find a way different way that will get results that save the species. The government agencies that are involved in reintroducing the lynx argue that it should be done in order to save an endangered species. In this argument they bring out three strong points for trying to save the lynx: every animal should have the opportunity to exist, many people feel happy when they see the animals they share the land with and all living things are part of a complex ecosystem ("Wild life Commission . . ."). However, they aren't sure how to reintroduce the lynx so that they don't all die.
Tuesday, September 3, 2019
Religion and State Sovereignty :: social issues
Religion and State Sovereignty The influence of religion on humankind can be traced back to the first records of history. Religion has served as a pillar of strength to some and binding chains to others. There are vast amounts of information and anthropological studies revealing the interaction of religion and humankind. However, for the purposes of this paper, the time periods of study will be broken up into three sections. Each section will give a general description of how religion affected the institution of the state and its Sovereignty in a Euro-centric perspective. The first period is the early period, which will encompass from Christianity and the Roman Empire to the Medieval times (approx. 311 to 1100 A.D.). The second period will include the Renaissance, the Reformation to the Treaty of Westphalia (1101 to 1648 A.D.). The third and increment of history will range from 1649 to 1945 A.D. The date 311 A.D. marks the issuing of the "Edict of Toleration" for Christians. This date is important because it symbolizes "national" acceptance of Christianity, and planted its roots as a political institution. Later the Roman Empire on the verge of internal collapse acknowledged the importance of Christianity and used it to hold together the remnants of it former self. This adoption of Christianity took form and eventually became the Catholic church.The church became intermingled with politics and became a strong entity. The policies delivered from the church had more authority than the local rulers and magistrates of the developing feudal system. For example, St. Augustine wrote about war and what justified its enactment against fellow men. This policy was followed and adhered to for hundreds of yea rs after St. Augustine wrote it. Another example, is the use of the Bible as a guideline for establishing governing systems. Scripture portrayed God as choosing the king of the people. The pope, being God's "representative" was then given the authority to crown the king. This crowning process gave the pope large influence in the political arena. This ritual continued for a number of centuries. The Crusades, which occurred around 1100 A.D., played a crucial role in challenging the church's authority. The pope identifying the spread of Islam as evil requested all of Europe embark on a "Crusade" to defeat the infidels. As the battles were fought, great treasures were found in the form of books and knowledge. These books were crude translations of old Greek texts, containing information which would eventually produce the waning of Church authority in the future.
Monday, September 2, 2019
Green Tea
Leeds, describes t h sec h e m is t ray of black tea manufacture Tea is the m so two I d e I yes o NSA u m De beverage in the w o r old . The economic importance of an annual w o r I d production of tea estimated to be in the region of 1-15 million tones has resulted in considerable attention being paid to the understanding of the chemical and physical changes w h I c h take place during tea manufacture.The three main types of tea, black, green and instant tea, are made by processing the y o n g shoot or flush, comprising the terminal b u d and t w o adjacent leaves of the tea plant (Camellia genesis), s h o w n opposite. Of these types of processed tea the most important is the familiar black tea, w h I c h is a fermented product, the coloring matter arising f r o m enzymes oxidation of phenol components of the tea leaf. Green tea, o n the other hand, resembles m o r e closely the dehydrated leaf, any chemical changes being non-enzymes and its brews do not contain highly colored pro ducts.Green tea is the m so t popular of r m of tea in a number of countries including China and Japan. Instant tea may be prepared f r o m both black and green tea, the process essentially involving extraction w I t h water, concentration and dehydration. The w o r I d market for instant tea, however, is small (some 5% of w o r I d tea production), indicating perhaps that satisfactory products have not yet reached the customer. The market has been further affected by the introduction of tea bags.In view of the commercial importance of black tea and the intricacy of the mechanisms of its manufacture, this product has received by far the most attention and the purpose of the present article is to outline some findings in this field. The black tea process 1 The freshly plucked tea flush is allowed to wither in air for some 18-20 hours, or for shorter periods when heated air is circulated, when it loses water and acquires a kid-glove feel. Important chemical changes have already begun to take place 2 .For example, amino acids are formed as precursors of compounds ultimately leading to the production of flavor and non-enzymes browning, the formation of kite compounds as flavor precursors and the 2 formation of caffeine. The leaf also becomes capable of acquiring a twist, rather than breaking up, when it is subsequently rolled. Fermentation is initiated by rolling when the enzyme, normally located in the chloroplast, and the phenol substrate, found in the cell vacuoles, are mixed in the presence of oxygen, without extensive damage to the outer cell wall.A three hour fermentation results in less than 10% of unchanged substrate remaining 3 . Fermentation is arrested by firing in a stream of hot air which also dries the product to some 3% moisture content. The final stage is grading. Enzymes oxidation Phenols or polysaccharides are enzymes which mediate in the oxidation of o-depletion to o-quinine's in the presence of oxygen but most of these enzymes are also capable of oxidation monopoles to o- quinine's. The tea enzyme is a polysaccharides but, unlike the ordinary for the so called fermentation are flavor components of the tea leaf.These are based on the flan structure, figure 1 . Polyphonic components comprise some 25-35% of the tea flush on a dry weight basis, of which some 20% may be found as flavor 4 . Specific flavor structures are shown in figure 2. They may clearly be divided into two groups ? the catechist and the collocations according to whether there are two or three hydroxyl (OH) groups in the right hand phenol ring. In fact, each group of compounds may be further distinguished according to the arrangements of groups around carbon atoms 2 and 3, resulting in four possible isomers.For example, the isomers of the catechisms are: (-) catechist, (+) catechist, (-) peachiness and (+) peachiness. In addition, these compounds exist as esters with Gaelic acid, figure 3. The most abundant are the collocations and specifically (-) epistemolo gically and its gallant ester (ca. 10% dry weight). In order of abundance, this is followed by (-) peachiness and its gallant (ca. 5 by weight) 4 . It is reasonable to assume that the first stage of oxidation involves conversion of Nutrition and Food Science these substrates to o-quinine's and is followed by condensation of these quinine's to dimmers and polymers.Flavor derived products in black tea The oxidation of flavors by way of quinine leads to the formation of dimmers by meaner of bonds between adjacent molecules, such that the 2â⬠² position on one molecule, figure 2, links to either the 6 or 8 position on another in the case of catechist (ahead to tail' dimmers), and in the case of collocations the 2â⬠² position on one molecule becomes linked to the 2â⬠² position on another (tail to tail' dimmers). These tail to tail dimmers have been identified in black tea and are found to be derived from (-) epistemologically and its gallant as expected 5 .During fermentation carbon dioxide is evolved and this is believed to arise from an unusual but most important reaction leading to the formation of a seven member ring. Carbon rings of this size are infrequently found in organic chemistry but the essentials of this reaction are illustrated by the oxidation of paroxysmal to form purloining, figure 4. Gaelic acid, found extensively in fermented tea, can undergo a similar reaction to form purpurogallincarboxylic acid.The thyroxin grouping of the collocations can react in a similar manner to paroxysmal and it is therefore, not surprising that compounds such as paleontologist, figure 5, are found to be present in black tea 6 . It is also found that the catechist can take the place of one molecule of reactant in the purloining reaction. Thus, catechist can react with Gaelic acid to form diphtheria acids, figure 6, but, more importantly, one molecule of catechist is capable of reacting with one molecule of collocating, again in a purloining type reaction 2 .T he product is known as deflating and the structure is shown in figure 7. Deflating and its gallant esters are very important orange-red coloring matters in black tea constituting some 2% by weight on a dry basis. However, by weight, the most important group of coloring matters in black tea is that known as therapeutics constituting more than 10% 7 . Their structure is still unknown but they may also Evaluation of tea Tea is evaluated under five headings: strength, color, briskness, aroma and quality.Strength is a measure of the total concentration of deflations and therapeutics and, since they are responsible mainly for the color of tea, with small contributions from paleontologists and products of November 1979 3 TEA continued non-enzymes browning, color and strength are related. However, the assessment of color is more a measure of the brightness of the color rather than total color and so is a measure of the balance between the deflations and therapeutics, the former contributing sensory brightness and the latter the depth 8 .The extent of popularization of tea polyphony's depends on such factors as time and temperature, more extensive popularization giving rise to reduction of solubility. The polymers combine readily with caffeine and the result on cooling is known as creaming, the compounds so formed tending to separate out. This is particularly undesirable in teas intended for making iced tea. Creaming can be assessed through the cream index which is determined by deliberate coagulation with acid.The astringency of tea is largely dependent on the amount of polyphonic compounds present, the degree of oxidation of the tea flavors and particularly by the amount of Gaelic acid groups present on the flavors and their oxidation products. Caffeine is reported to improve the briskness of tea and milk or lemon Juice may modify the taste of the polyphony's 2 . The overall quality of a tea infusion may also be related to he proportions of deflating and therapeutics present and also to the sum of their concentrations.The aroma of tea is not related to tea polyphony's but is determined by the volatile components. Some three hundred compounds have been identified in black tea and recent discoveries are listed in the latest review 2 . They comprise leaderless, stones, esters, pyridine's, paralyzes, thistles, squishiness, aromatic amines, amides and other compounds. The formation of carbonyl compounds is a result of Stretcher degradation reactions between amino acids and oxidized flavors according to: usability stresses the importance of the formation of amino acids during the withering stages of tea manufacture.Tea leaves, being photosynthetic organs, also contain a significant amount of cartooned and important black tea aroma components are probably produced as a result of the oxidative degradation of carotids. The oxidation of unsaturated fats may also contribute to flavor. Conclusion The most important stage of black tea manufacture involves e nzymes oxidation of flavor substrates. Demerit flavors and particularly deflating are important contributors to tea quality together with the higher polymers known as heartburning. It is worth noting, however, that condensation does not stop when the enzyme is inactivated during firing.
Sunday, September 1, 2019
Environmental Benefits of Solar Panels Essay
Environmental Benefits of Solar Solar Panels Produce Electricity with Zero Emissions Solar energy generated via solar panels (also known as Photovoltaic Solar or PV solar) is one of the most sustainable ways we have of generating energy and electricity today. First and foremost solar panels produce electricity without emissions of any kind. The majority of electricity we use in the United States today is generated from burning coal. Recently there has been a lot excitement around the idea of clean coal, but it is important to remember that this technology only exists as a concept and many experts doubt it will ever be commercially feasible. Solar panels are a proven, time tested, highly evolved technology and are ready for use now, and as the industry expands solar panels are becoming increasingly effective and cost efficient. Other Alternative Energy Technologies have Serious Environmental IssuesOther alternative energy technologies like nuclear reactors and hydroelectric dams pose both policy challenges and unfortunate environmental consequences when compared to PV solar. Nuclear reactors create hazardous waste that is piling up at power plants across the nation, and by the time the first nuclear waste storage facility might be finished, all of its available storage space will already be spoken for. In comparison, generating electricity with hydroelectric dams doesnââ¬â¢t result in the emission of greenhouse gases, but it does have disastrous effects on the ecosystem in and around the river it interrupts. Go Solar and Reduce Your Carbon Emissions by 23,000 pounds! The average American home uses more than 11,000kWh of electricity every year, resulting in the emission of 23,122lbs per year of CO2 from burning coal. By comparison, the average automobile in the United States is responsible for emitting approximately 14,600lbs of CO2 into the atmosphere in a given year. This means that for every American home that converts to solar energy and PV solar, the resulting reduction in greenhouse gas emissions is equivalent to taking about 1. cars off the road. If the state of California were to harness solar power to satisfy just its residential energy needs, the impact would be the same as taking almost 20 million cars off the road. By installing solar panels on your home or business you can make a major contributions to the fight against global warming while also insulating yourself from the inevitable price increases from power companies tied to diminishing fuel sources. Solar Energy is an Infinite ResourceAnd not only is electric power from solar panels free from greenhouse gas emissions, itââ¬â¢s also an infinite resource. The fact is there are only so many gallons of oil, trainloads of coal, and cubic feet of natural gas in our planet, and they will run out. Our daily lives rely on huge amounts of energy and while there is a fair amount of discussion and disagreement about how long these fuels will last, there is strong consensus that we use these resources faster than they are replenished and sooner or later they will run out. During a single day more energy in the form of sunlight finds its way to earth than we could ever hope to use. The sooner we begin to harness this energy through the deployment of solar panels (PV solar), solar water heaters, and other solar energy technologies, the sooner we will see the effects of anthropogenic climate change slow and reverse, and the sooner we will see our economy thrive without the limits of expensive and finite sources of energy.
Subscribe to:
Posts (Atom)