Personal Ethics Essay Example | Topics and Well Written Essays - 1750 words

Personal Ethics - Essay Example In addition, she worked to assure that patients under her care were healthy. Her critical thinking of Environmental Theory dramatically revolutionized the nursing methodology in which sanitary conditions for patience became a focal point for all nurses. As a nurse, it is imperative to provide the utmost care to patients especially in the realm of elderly. As a nurse, one must understand that not nurturing elders can be against the moral standards of a nurse. Elderly neglect is one of the most prominent issues that needs to be addressed in modern society. It is clear that every year, an estimated 4 million older Americans are victims of neglect. Elderly neglect has been an issue not only in nursing houses but also in other aspects. Conducive research indicates that for every case of elder abuse and neglect reported to authorities, experts estimate as many as 23 cases go undetected. The quality of life of older individuals who experience abuse is a critical element because elderly often feel neglected which may cause physiological trauma that is definitely not healthy. This physical trauma can be a huge element as much research also suggests that older people who have been abused tend to die earlier, which is a huge concern. For the elderly, it highly imperative that they don’t experience this short of emotional trauma in their later years. From my personal perspective, nursing are majority in charge of handling patient’s nutritional status. Most patients that are sick tend to lose weight and must be supplemented with proper amount of food and nutrients. Conducive research indicates that as many as 65% of elderly patients are malnourished when they enter the hospital while in the hospital. Without having the proper nutritional assessment, it is highly illogical and difficult to monitor their status. Morally, they must have the right to

Common Sense Summary Essay Example for Free

Common Sense Summary Essay Summary of Thomas Pains Common Sense Thomas Pain believed strongly in supporting the colonies for colonial independence. The sun never shined on a cause of greater worth, says Thomas Pain. He believed that not only the country should be involved but of at least 1/8 part of the globe. He illustrates in his article that a new era for politics has struck which leads to a new method of thinking. Pain also shows that reconciliation with Britain is not the answer. He states that America will flourish as much or more without Britain. Pain also illustrates how people think that Britain is protecting them. He responds saying that Britain was only thinking of Britains own interest instead of thinking of the interests of the colonies. Pain concludes in his article four of why they must show their declaration for independence. First he states that Britain and the Colonies may quarrel forever. Secondly he states that France and Spain want help the colonies unless they rebel and fight. Thirdly he states that they should be considered rebels and unite to fight the British. Fourthly they will send out to foreign courts published documents that state miseries that they have endured and the peaceful methods they used in return.

What is cross cultural marketing?

What is cross cultural marketing? INTRODUCTION: CROSS CULTURAL MARKETING: Cross cultural marketing is a marketing done with two or more different cultures i.e. it is done internationally on a personal level, which means when planning marketing campaigns and media cultural differences are taken into consideration, understanding the need for maintaining the balance between Globalization and Localization and last but not the least Implementation of the strategies that are required to respect the differences while unifying of brand messages are taken into consideration. Cross Cultural Marketing is a research that takes place across the cultural groups or nations. Due to Globalization and International marketing, Cross Cultural Marketing has become very important. The nature of the Research is also becoming highly diverse. According to International view, to determine the degrees of adaption, competitive advantage and attractiveness of the markets the information of marked is used. GREET HOFSTEDE THEORY: Greet Hofstedes Cultural Theory has described National Cultures. This research was firstly conducted between 64 countries to identify the national culture differences across subsidiaries of multinational firms (IBM). There were many other research conducted such as: elites of 19 countries, studies of students of 23 countries, up-market consumers of 15 countries and commercial airline pilots in 23 countries. All the above studies together identified four cultural dimensions and the fifth one was added later on. The nature of all the managerial skills depends specifically on their culture. It is not necessary that a management philosophy or technique is going to be same as another. Culture is said to be a conflict source rather than synergy and cultural difference can be disastrous and often nuisance at its best level. There are Five Cultural Dimensions in Hofstede Cultural Dimensions, they are: Power Distance Index(PDI) Individualism(IDV) Masculinity(MAS) Uncertainty Avoidance Index(UAI) Long Term Orientation(LTO) 1) Power Distance Index: It is an extent to which the members who are less powerful in the organisation think that the distributions of the power amongst them are unequal. It defines inequality but it is defined from below and not from above (more vs. less). It says that the level of inequality in society is advised by the followers as much as by the leaders. The power on Inequality are of course includes in the extremely facts of any society. The awareness of societal inequality is there in anybody having some International experience, but some of them are more unequal than others. 2) Individualism: Individualism is a degree in which ‘Individualism is on one side vs. the opposite side ‘collectivism; on the individualistic side individual are collected into groups and we can find the societies in which the co operation between the individuals are loose, everyone is for himself/herself and his/her family. On the other hand Collectivism, we can find the societies in which Individuals are in groups but having great co operation amongst them, these families include grandparents, uncles and aunties, which protect them in exchanging unquestioning loyalties. This dimension is addressed to all the societies of the world and is extremely fundamental. 3) Masculinity: Masculinity has femininity on its opposite side (Masculinity vs. Femininity). Another fundamental issue on any society in the world is the distribution of roles between the genders of the society. According to IBM studies, the value of mens differing more than the value of womans in the society. The value of mens from one country to another containing the dimensions are assertive, competitive and maximal to the value of the women on one side to modest, caring and similar to the value of womens on the other hand. The assertive pole is said to be ‘Masculine. There is a gap between the mens value and womens value in masculine countries as they are competitive and assertive. 4) Uncertainty Avoidance Index: The societies of Uncertainity and ambiguity are tolerated by the ‘Uncertainty avoidance index. It refers to the search of truth by mans. It refers till what extent a culture program is comfortable or uncomfortable to its member in a situation which is unstructured such as surprising, novel and unusual. In the countries avoiding uncertainty peoples are emotional and inner nervous energy motivate them a lot. Countries avoiding uncertainty minimises such situation by applying strict rules and laws, safety and security measures and the opposite countries accepting uncertainty have few rules and are relativist on religious and philosophical level, and avoid their environment to accept emotion. 5) Long term orientation: It has Short term orientation on its opposite side, in this dimention the students of 23 countries were taken into consideration and a study was been done by way of questionnaire framed by Chinese scholar. It was not on the basis of truth. In Long term orientation the values are on the basis of frugality steadfastness and in short term orientation there was traditional respect, fulfilling social obligations. The techniques of Confucius found both the negative and positive v alues of the dimensions. This dimention is also applied on the country without a Confucian heritage. Those who are engaged in International Business, Sometimes it is amazing to know how different peoples behave in other cultures. We Human tend to have a feeling that all the peoples are same, but it is not like that. Therefore if somebody goes to some other country to make decisions and is going to make decisions same like he used to take in his own country, then it is sure that he is going to take some very bad decisions. Hofstedes research gives us some knowledge about other cultures so that if we are going to some other country, we should be more effective   interacting with peoples in that country. If the information of Hofstedes research is applied properly than it should reduce the level of anxiety, concern and frustration. Most importantly this theory will give an Understanding edge which results to more successful results. Apart from all this there are several drawbacks of applying Hofstedes Theory they are: Firstly the individuals of a country are not related to the averages of that country. Even if this model of theory is said to be correct when it is applied to a general population, one has to be aware that all the regions or even individual will not fit in the mould. It can be used as a reference guide to understand the cultural difference of different countries, but not as a law, as it is known that there are always some exceptions to any rule. Secondly, what is the accuracy of the data? The data is collected by the form of Questionnaires and it has its own limitations. In some cultures the content of the questions asked are more important than the context of the questions asked. If the group oriented cultures are taken into considerations than the individual might can answer as if it is addressed to the group in which he or she is. And Thirdly Are the data that has been collected is up to date? As there are many internal and external factors by which the culture of the country change over times. TROMPENAARS THEORY OF CULTURAL DIMENSIONS: Trompenaars theory was invented by a Dutch author named ‘FONS TROMPENAARS. This model was invented to explain the national cultural differences in the organisation and to show that it is a major challenge for international managers to manage this differences in this incongruous world. Trompenaars and Hampden-Turner took ten years to   gather data. Over 15000 managers in 28 countries were sent the questionnaire and 500 usable response was received per country. This helped them to differentiate national cultures. They introduced seven cultural dimensions, they are: Universalism vs. Pluralism Individualism vs. Communitarisnism Specific vs. defuse Affectivity vs. Neutrality Inner direct and outer direct Achieved status vs. Ascribed status Sequential time vs. synchronic time 1) Universalism vs. Particularism: This is based on the question â€Å"Rules are more important or relationships†? A culture assigns the degree of importance either to personal relations or to the law. In universalism peoples think that values, standards and general rules are based on the needs of friends and other relationships and in Particularism friendships and other relations are the terms people think as culture and the rules are on the basis of how peoples are related to each other. 2) Individualism vs. Communitarianism: It is based on the question that â€Å"functions that are done by us are on the basis of groups or Individuals†? This means that the peoples are functioning more as individually or in community. In Individualism, Individual are placed in front of community by the peoples and people think that if the individual is happy or fulfilled then they are happy and fulfilled and they themselves take care of their own. In Communitarianism community is placed in front of Individual, hense it is the responsibility of the individual to act in such a way that serve the society. 3) Specific vs. defuse: It is based on a question that â€Å"how far we get involved†? It shows that the responsibility is assigned specifically or accepted defusely. The elements are analysed individually first and then put together in Specific culture and accordingly the lives of the peoples are divided. People concentrates on hard facts, contracts and standards and in Defuse culture all individual elements are related to each other. The Individual elements are given less importance than the relationships between the elements. 4) Affectivity vs. Neutrality: is based on â€Å"Are we displaying our emotions†? In Affectivity people dont feels to hide their feelings, they prefer to show their emotions and on the other side peoples dont posses to show their feelings and they controls their emotions. 5) Inner direct and outer direct: It is based on â€Å"Are we controlling our environment or we are working with it†? This is a degree in which Individual beleaves that they can control the environment or environment is controlling them. In Inner Direct culture peoples believe that Human can control nature if he/she makes an effort to do that even if it is complex. In Outer direct culture peoples believe to live in Harmony with nature as they have an organic view of nature. 6) Achieved status vs. Ascribed status: It is a degree in which Individuals have to prove themselves to achieve status or it is automatically achieved. Peoples in Achieved status culture believe that they have to accomplish something to get their status and in Ascribed Status culture, peoples believe that they have their status from their birth, gender, wealth or age. 7) Sequential time vs. synchronic time: It is a degree with Individual think in one at a time vs. Individual thinking several things at a time. In a sequential culture people think that time is sequential and the do one thing at a time and in Synchronic culture peoples believe that time is flexible and do several things at a time. (http://www.provenmodels.com/580/seven-dimensions-of-culture/charles-hampden-turnerfons-trompenaars/) COMPARISION OF GREET HOFSTEDE THEORY AND TROMPENAARS THEORY OF CULTURAL DIMENSIONS: Of the seven dimensions of Trompenaars Theory two dimentions of Hofstede Theory are closely reflected. Firstly Trompenaars Communitarianism vs. Individualism value orientation seems to be closely identical to the Individualism value orientation of Hofstede theory and secondly Trompenaars Achieved status vs. Ascribed status appears to be linked with Hofstedes Power Distance Index, If one accepts that Nature has done compromise with Status and not achievement than it shows that it has more willingness to accept power distance. This does not completely matches as Hofstedes power index in not dealing only on how according of status is been done but also how power distance is accorded within the society which is not at all covered by Trompenaars Theory. Trompenaars other dimentions such as Affectivityvs. Neutrality which says that feelings are expressed openly can be compared with Hofstedes Masculinity dimension as it focuses highly on some effects of value dimensions as Trompenaars dimension is not a value aspects but behavioural aspect in itself. The Universalism vs. Particularism which does not trust relationships and is preferring roles can determine meaning as a part of Hofstedes Uncertainty Avoidance Index on one hand and Individualism on the other hand. The Specific vs. defuse dimention of Trompenaars Theory cannot be compared to Hopsteades Theory as there are no links between them. CLASSIFICATION OF THE COUNTRIES ACCORDING TO THEIR RESPECTIVE CONSISTANCY: According to an examination that was done and several countries of the world were taking into consideration, It explains that according to both Hofstedes and Trompenaars Theory   the countries like Japan and India are relatively weaker, while UK, USA and Denmark are relatively Egocentric. There are several other countries such as Greece, Spain and Maxico which are more Egostical according to Trompenaars than Hofstedes theory and the differences cannot be explained wholly. According to Hodgetts and Luthans(2000) they feels that the differences can be due to differ in time frames of both the studies which indicates that change of culture has taken place. On the other hand it indicates that Hofstedes theory is becoming out-dated. Let us take an example of Mexico, its consolidation into Global Economy may be moving away from communitarian value. Cultures does not remains same, they changes as time changes. It is not like todays characterization would be same as it was in 1960s or 70s. The interesting point to note is that the countries such as Hungary and Russia are relatively egoistic despite of their communist past. Trompenaars also extended his research by examine the different cultures according to their nationalities, for this he introduced a new dimension: equality vs. hierarchy, in Hierarchy culture the leader has full authority and is having the best knowledge, this dimension is related with Power Distance dimension of Hofstedes theory. There are some more similarities in both the theories such as: UK and North America are relatively egoistic according to   Trompenaars theory and are relatively low according to the power distance dimension of Hofstedes theory. The countries such as Spain and France are said to be less egalitarian and high in power distance dimension on Hofstedes theory. According to Trompenaars German Culture is hierarchical, but Hofstede says that Germany is relatively low according to power distance. These were some of the countries classified by both the theories according to their respective consistency. (www1.ximb.ac.in//Hofstede%20and%20Trompenaars%20compared) TROMPENAARS DIMENTIONS IN INDIA: Indians believe that they are controlled by the environment, so they strongly accept this point, They are concerned how application of ideas and practices should be done. People in India believe that they are a part of a group, as it is a multicultural country; Indians have respect for their religion and are strongly into family values and traditions. Indians displays their affection neutrally, but they shows assertiveness which is allowed to them. They are always non-violent that is what is thought to them from starting. The size of both Public and Private Spaces are same. The people of India Takes care of their Public spaces as entry to their Public spaces can make entries to their private spaces. Most of the Indians are value ascriptions as they believe in their caste system. Their status title depends on their professional titles, their degrees and age. Friendship is given more importance.

Shellac for Film Formation and its Modification

Shellac for Film Formation and its Modification Shellac for film formation and its modification for enhancement of properties Abstract With the growing environmental concerns associated with synthetic polymers, the need for biopolymers has strongly emerged which can have applications ranging from packaging to electrical applications. Shellac, which is a naturally occurring product resin obtained from insects (female lac bug), is one such component which can be used for production of biopolymeric film. However, due to limitations on mechanical and barrier properties, modification of Shellac is necessary. Following is a reviewed study of modifications of Shellac to improve its film properties, heat resistance, water resistance, gloss and hardness. Keywords: Biopolymers, Shellac, modification, coatings. 1. Shellac With the decrease in petroleum reserves, the need for biocompatible polymers has emerged. Polylactic acid, Zein protein films and Shellac, as in this case, have become vital for environmental concerns. Shellac is a naturally occurring polymer, obtained from resinous secretions of lac insects, Laccifer Lacca (Soradech et al) 1. Shellac as a coating material is mainly used in the fields of food and pharmaceutical industries (Jinwei Wang, Lei Chen, Yedong He) 2. However, one of shellac’s problems is a lack of solubility in commonly used coating solvents such as ketones and glycol ethers (Jennifer T. Otto, David L. Trumbo) 3. Problems associated with shellac are batch-to-batch variation, need of organic solvent, less stability and less solubility in alkaline pH of intestine, comparing to synthetic and semi-synthetic enteric polymers. Shellac is primarily used as a naturalprimer,sandingsealant,tannin-blocker,odour-blocker,stain, andhigh-glossvarnish. Applications of Shellac Due to excellent film forming and protective properties, it is widely used in food industry, paint industry and to a considerable extent in pharmaceutical industry. Use of biopolymers for packaging applications is severely limited due to poor barrier and mechanical properties (Melissa Gurgel Adeodato Vieira et al) 4. Significant work was carried out by (Hult et al) 5 by using Microfibrillar cellulose (MFC), incorporation of which reduces the Oxygen Transmission Rate (OTR) value (Syverud et al)6 combined with Shellac to produce fibre based packaging. Significant oxygen barrier for packaging was not obtained but multilayer coating with MFC and Shellac reduced OTR greatly. (D. Phan Te et al) 7 presents another way of eliminating the limitations of biopolymers for packaging. Formation of hydrocolloid-shellac bilayer films produced an enhanced resistance to water and moisture permeability with good mechanical properties. Better mechanical properties and better adhesion to the hydrocolloid layers was obtained with the use of plasticizer. Shellac has also been used widely in Pharmaceutical and drug retention applications. (Berg et al) 8 describes shellac as one of the very few materials to be used as a pharmaceutical coatings. It finds special applications in health applications and nutraceuticals (Krause et al) 9. 2. Modifications of Shellac for enhancement of properties Modification has been carried out to overcome many popular limitations of Shellac films like low heat resistance, poor water resistance, poor solvent resistance, chemical resistance, brittleness, etc. (Sharma et al.) 10 2.1 Crosslinking of acetoacetylated Shellac with multifunctional amine or acrylate (Jennifer T. Otto, David L. Trumbo) 3 Crosslinking of films was carried out by reaction between acetoacetylated shellac with a multifunctional amine or with a multifunctional acrylate under Michael addition reaction parameters (Jennifer T. Otto, David L. Trumbo et al.)3. According to (Jennifer T. Otto, David L. Trumbo et al.)3 Shellac/t-butylacetoacetate films were synthesised for this purpose. The glass transition temperature of the modified shellac was observed to be 4.5 °C. The Tg of unmodified shellac is 54.6 °C.High level of acetoacetylation is indicated to have occurred as acetoacetylation is known to reduce Tgs by reduction in hydrogen bonding capabilities (Clemens, RJ, Rector, FD et al)11. Major purpose was to alter the solubility of the shellac. Modified Shellac was attempted to dissolve in various solvents. It was noted that the modified shellac was soluble in MEK, methyl amyl ketone (MAK), acetone, CHCl3, dipropylene glycol monomethyl ether (DPM), THF, and DMAC. The unmodified shellac was soluble in ethano l and DMAC and sparingly soluble or insoluble in MEK, CHCl3, MAK, and DPM. Thus, desired modification was obtained, and (Jennifer T. Otto, David L. Trumbo) 2 formed thermoset films crosslinked with two different species, an amine and a multifunctional acrylate. It is possible to modify shellac by reaction with t-butyl acetoacetate. This modification changed significantly different solubility characteristics and the ability to be crosslinked with different species at different temperatures, including ambient temperature. The crosslinked films have well to excellent properties, with the exception of low angle gloss for the DYTEK A cured films. This could reflect some incompatibility on a microscale between the modified shellac and the diamine. Gel content measurements suggest that a high degree of crosslinking has been obtained. 2.2 Modification by use of Maleated Shellac (Hasmukh S. Patel and Sumeet J. Patel) 12 Following modification was employed for coating preparation of maleated shellac-acrylic resin emulsion paints, acrylic resin its application as surface coating materials and characteristic. According to (Hasmukh S. Patel and Sumeet J. Patel) 12, maleated Shellac was synthesised by treating Shellac with Maleic Anhydride. Shellac solution in tetrahydrofuran (THF), different proportions (10–30% wt of shellac) of maleic anhydride was added and well mixed. The resultant reaction mixture was refluxed for 5 h before cooling and pouring into cold water. Adhesion and smooth finish film were obtained and no observable damage and detachment of the film was observed. Blending of Maleated Shellac with acrylic resin might give rise to the polymerization and/or crosslinking between the two components through the functionality due to unsaturation which resulted in better water resistance and decent alkali resistance even though shellac and becomes easily soluble when it comes in to contact wi th water and alkali, respectively. The coated panels were immersed by (Hasmukh S. Patel and Sumeet J. Patel) 12 in water for 5 months and no detachment or discolouration was observed. On the coating after taking out the panels from water. It was noted that water that was socked by the panels, evaporated kept at room temperature. Deterioration water socked panels of the coating was not observed which indicates that the composition resisted uphold of the water/ moisture within the system which is an important feature of the paint formulation. 2.3 Blending of Shellac with Epoxy resin (D. N. Goswami and S. Kumar) 13 The reaction represented below was employed as a modification for Shellac. Figure 1: Shellac and Epoxy group reaction (D. N. Goswami and S. Kumar) 13 The above reaction represented in Figure-1 is a reaction mechanism between Shellac and Epoxy group. This reaction was monitored by reducing acid value or reducing epoxide value. The properties obtained were found to be optimum for cured samples containing 70 parts of shellac and 30 parts of the epoxy resin (Tripathi et al) 14. Following figure (Fig. 2) shows the variation in dissipation factor (tan ÃŽ ´) for various shellac-epoxy resin blends with time. Figure-2:Variation of dissipation factor (tan ÃŽ ´) of shellac-epoxy resin varnishes with time. (1) Dewaxed lemon (DL) shellac: epoxy resin = 60:40, mol. wt. of epoxy resin 500; (2) dewaxed lemon (DL) shellac: epoxy resin = 70: 30, mol. Wt. of epoxy resin 1 OOO; (3) dewaxed orange (DO) shellac: epoxy resin = 50: 50, mol. wt. of epoxy resin 1 OOO. (D. N. Goswami and S. Kumar) 13 The dissipation factor undergoes an initial rise up to around the sixth day after blending and remains almost constant thereafter. The variation of conductivity of different shellac-epoxy resin blends with time is shown in Fig. 3. Figure-3: Conductivity variation with time (D. N. Goswami and S. Kumar) 13 Conductivity, like dissipation factor, also showed an initial increase with time. Around the sixth day, the variation was found to be biphasic in nature with an inflection. For the blends containing epoxy resins with molecular weights of 500 and 1000 the nature of variation of both dissipation factor and conductivity with time was found to be similar. The variation of specific viscosity of the 70: 30 and 50: 50 blends with time is shown in Fig. 4. Figure 4: Variation of specific viscosity of dewaxed lemon (DL) shellac-epoxy resin varnishes (D. N. Goswami and S. Kumar) 13 It was observed that initially specific viscosity increases with time and becomes almost constant after six days. A small plateau was observed for the next few days and thereafter specific viscosity increases. It was observed that the values of dissipation factor, conductivity, dielectric strength and specific viscosity of the epoxy resin-free shellac solutions were more or less constant. If the reaction is carried for a longer period, besides the reaction mechanism as shown previously, cross-linking occurs. In this process, the hydroxyl groups of shellac produced by the above mentioned reaction probably react with the epoxide group and/or with the carboxyl group forming a three-dimensional network as shown in Fig.5 Figure 5: Reaction between Hydroxyl group and/or Epoxy or Carboxylic group. (D. N. Goswami and S. Kumar) 13 2.4 Combination of Shellac and Polyamidoamine (R. K. Dey, G. S. Tiwary, Tanushree Patnaik, Usha Jha) 15 The modification mentioned below was essentially done for drug delivery applications. Natural biodegradable and biocompatible polymer is encouraged as a starting material for synthetic purpose so as to reduce the production of the toxic biodegradable products in body’s physiological environment. By varying the ratio, a wide range of polymers were prepared. Shellac: PAA as 1: 1, 1: 2, and 1: 3 ratios was taken though the characterization was done by taking Shellac and PAA in the ratio 1: 1. According to (R. K. Dey, G. S. Tiwary, Tanushree Patnaik, Usha Jha) 15, the samples were prepared using the appropriate amount of PAA dissolved in 20 mL of methanol, added to a solution of Shellac in methanol. A solution of 2, 2-dimethoxy-2-phenyl acetophenone (about 2 wt % with respect to the PAA) was added in methanol (around 5 mL) to this mixture with mild stirring. The reaction mixture was poured into a glass petridish and was kept at room temperature. The polymerization was initiated by irradiation with an incandescent broad-spectrum lamp (Philips Comptalux, 150 W), positioned 25 cm above the petridish. Irradiation was continued for 7 h until gelation occurred. The schematic sketch of the reaction leading to the formation of polymeric material is shown in Figure 6. The polymeric material was extensively washed with methanol to remove any residual monomer, then freeze-dried and stored until further use. The resultant product was cut in films, dry in air for three days, and place in a vacuum oven at 25 °C until constant weight. It was observed that PAA was soluble in water where as the corresponding polymer of Shellac-PAA was insoluble in water. Figure-6: Synthesis of Shellac-PAA by photopolymerization technique (R. K. Dey, G. S. Tiwary, Tanushree Patnaik, Usha Jha) 15 Ethanol served as an ideal solvent for dissolving both the PAA and Shellac-PAA. In acetone the Shellac-PAA was found to be partially soluble. In acetone the Shellac-PAA was found to be partially soluble. Intrinsic viscosity in ethanol for Shellac-PAA was calculated to be 0.247 dL/g. 2.5 Modification of Natural Shellac using a diamine (Jinwei Wang, Lei Chen, Yedong He) 2 Due to the growing concern on the environment and health made it necessary and extremely urgent and valuable to develop environmental friendly coatings. Many commonly used coatings such as polyurethane, epoxy etc. were produced as waterborne coating, solvent-free paint, and radiation curing paints, etc. so that their injury to people and environment could be reduced as little as possible. Shellac is one such environmental friendly coating based on natural product. Shellac was prepared by using aliphatic diamine as a crosslinking agent and ethanol as a solvent. Experimental procedure as reported in (Jinwei Wang, Lei Chen, Yedong He) 2 is that 30 ml purified shellac in ethanol solution (10%wt.) was poured into a flask with mechanic siring. When the solution temperature reached 50 à ¢- ¦C, 1,3-propanediamine (5%wt.of shellac) was dropped into the flask in 30 min followed by continuously stirring for another 1 h. The modified shellac could be obtained as a yellowbrown solution which c ould be used directly or deep brown powder by evaporating the ethanol at 45 à ¢- ¦C under vacuum. Natural Shellac was modified with 1,3-propanediamine by using Ethyl alcohol functioning as a solvent. When compared this modified shellac to the usual shellac, it was observed that the anticorrosive performances of the modified shellac on copper was greatly improved. These betterments were said to have occurred due to the establishment of network structure and the origination of hydrophobic propane chain in the shellac structure, and hence reducing the penetration speed of ionics and water onto the surface of copper. Other organic diamine such as, ethylene diamine, 1,6-hexamethylenediamine, etc. can also be used for similar modification. Depending on the chain lengths of these aliphatic groups, we might have different effect on the protective performance of the modified shellac. 3. Conclusion Thus, considering the various limitations of Shellac like pH sensitivity, limited solubility, less stability, etc we can employ the modifications described in the above section. Modifications can include blending with another polymer to form a biocompatible polymer, or crosslinking. It can also be done by converting Shellac to some other material, as in this case, Maleated Shellac. Such modifications are of great importance which will result in better heat resistance, gloss, hardness, water resistance, etc. and overcoming of limitations of Shellac, which is a vital component in the field of biopolymer. References Sitthiphong Soradech, Jurairat Nunthanid, Sontaya Limmatvapirat, Manee Luangtana-anan (2011) â€Å"An approach for the enhancement of the mechanical properties and film coating efficiency of shellac by the formation of composite films based on shellac and gelatin† Journal of Food Engineering 108 (2012) 94–102 Jinwei Wang , Lei Chen, Yedong He (2008) â€Å"Preparation of environmental friendly coatings based on natural shellac modified by diamine and its applications for copper protection† Progress in Organic Coatings 62 (2008) 307–312 Jennifer T. Otto, David L. Trumbo (2010) â€Å"A shellac derivative in thermoset coatings† J. Coat. Technol. Res., 7 (4) 525–527, 2010 Melissa Gurgel Adeodato Vieira, Mariana Altenhofen da Silva, Lucielen Oliveira dos Santos, Marisa Masumi Beppu (2010) â€Å"Natural-based plasticizers and biopolymer films: A review† European Polymer Journal 47 (2011) 254–263 Eva-Lena Hult, Marco Iotti, Marianne Lenes (2010) â€Å"Efficient approach to high barrier packaging using microfibrillar cellulose and shellac† Cellulose (2010) 17:575–586 Syverud K, Stenius P (2009) Strength and barrier properties of microfibrillar cellulose (MFC) films. Cellulose 16(1):75–85 Phan The D, Debeaufort F, Luu D, Voilley A (2008) Moisture barrier, wetting and mechanical properties of shellac/agar or shellac/cassava starch bilayer bio-membrane for food applications. J Membr Sci 325:277–283 Sonja Berg, Manuela Bretz, Eva Maria Hubbermann, Karin Schwarz (2011) â€Å"Influence of different pectins on powder characteristics of microencapsulated anthocyanins and their impact on drug retention of shellac coated granulate† Journal of Food Engineering 108 (2012) 158–165 Krause, K.P., Mà ¼ller, R.H., (2001) â€Å"Production of aqueous shellac dispersions by high pressure homogenisation†. International Journal of Pharmaceutics 223 (1–2), 89–92 S. K. Sharma, S. K. Shukla, D. N. Vaid (1983) â€Å"Shellac-Structure, Characteristics Modification† Def Sci J, yo] 33, No.3, July 1983, pp 261-271 Clemens, RJ, Rector, FD (1989) ‘‘Synthesis of Acetoacetyl—Functional Resins.’’ J. Coat. Technol., 61 770 Hasmukh S. Patel and Sumeet J. Patel (2010) â€Å"Novel Surface Coating System Based on Maleated Shellac† E-Journal of Chemistry 2010, 7(S1), S55-S60 D. N. Goswami and S. Kumar (1984) â€Å"Study on the Curing of Shellac with Epoxy Resins by Dielectric Measurements† Die Angewandte Makromolekulare Chemie 126 (1984) 145 152 (Nr. 1992) S. K. M. Tripathi, S. Kumar, G. S. Misra, Indian J. Technol. 4 (1966) 15 R. K. Dey, G. S. Tiwary, Tanushree Patnaik, Usha Jha (2012) â€Å"Shellac-Polyamidoamine: Design of a New Polymeric Carrier Material for Controlled Release Application† Journal of Applied Polymer Science, Vol. 125, 2626–2635 (2012)

King Lear :: William Shakespeare Literature Essays

King Lear, Abbey exhibited King Lear, another of his large, dramatic pictures, at the Royal Academy in 1898; the painting was accompanied in the catalog by these lines from Act I, scene i: Ye jewels of our father, with washed eyes Cordelia leaves you. I know what you are; And, like a sister, am most loth to call Your faults as they are named. Love well our father. To your professed bosoms I commit him. But yet, alas! stood I within his grace, I would prefer him to a better place. So farewell to you both. The critics saw much to like in Abbey's King Lear. The reviewer for The Art Journal (1898, p. 176) comments especially on the bold use of color and the grouping of the figures on the canvas: If the admirers of Mr. Abbey felt that the note of the superbly dramatic 'Richard III.' was not repeated with similar force in last year's 'Hamlet and Ophelia,' all doubts should be set at rest by the barbaric majesty of the Scene from 'Lear,' a subject which, under the title of 'Cordelia's Portion,' inspired Madox Brown to the production of one of his finest compositions. The dominant figure in Mr. Abbey's commanding decoration is Cordelia, and it is impossible to resist the colour-charm in which she is invested. Her yellow-green vestment with the deep blue border set against the green robe of France, and opposed to the menacing reds and blacks of Goneril and Regan, is a triumph of originality. As in Richard III. there is a strong suggestion motion, and the drooping figure of Lear sustained by his pages and followed by his men-at-arms from the left to right of the canvas gives this note. The dramatic figure of the sisters in the attitudes of dignified indifference and mock courtesy are splendidly realized, and the foot-light effect discernible throughout the picture certainly adds to the intenseness of the composition. Unmistakably in this important group, Mr. Abbey has reached a very high level and is going far to prove, by this magnificent series of object lessons, that his decorative style is capable of giving the fullest expression of dramatic motives. "H. S.," the reviewer for The Spectator (May 14, 1898, p. 694), also remarks on the "audacity of the colour" and judges the effects "gorgeous and beautiful." "The truth of the gestures," he adds, "are as finely conceived as are the combinations of scarlet and purple black crimson and sea-green.

Global Warming Essay -- Environmental Global Climate Change

What happens when too much carbon dioxide gets omitted into the Earth’s atmosphere? The condition known as Global Warming occurs. Global Warming is the rising of the Earth’s surface temperature due to chemicals in the atmosphere. Global Warming has many threats on the climate and even the health of the people on this planet. Some of these threats include the altering of crop seasons and even effect the way organisms survive on the planet. The first thing I think I should discuss when talking about global warming is what causes it to occur. Gases such as carbon dioxide, methane and nitrous oxide, which are known as greenhouse gases, all build up in the atmosphere of the earth. All these gases make it so that it becomes harder for the radiation that the sun shines into the atmosphere to escape. The heat continues to build up and this is what causes the temperatures to increase. I know this seems like the temperatures increase massively but in the last hundred years the average temperature of the Earth has gone up between 0.8 and 1.0 degrees farenheight. Also in the last fifteen years, we have had the ten warmest years in record. Global Warming also helps the Earth and it has been for many years. Without global warming, the Earth’s temperature would be a lot lower than the 60-degree average. Unfortunately due to there being many more harmful â€Å"greenhouse gases† being placed into the atmosphere, instead of the temperature staying at a constant, its rising. What are many of the dangers of the Earth’s temperature rising? First of all it cause many of the glaciers that are floating in the Arctic and Greenland to melt. This in turn causes the sea levels to rise around the world. In the last hundred years alone the seas around the planet have risen anywhere from four to ten inches. I know it does not sound like a massive change but being able to raise all the seas in the world a whole ten inches is a huge problem. Sea levels also continue to rise is because the hotter temperature cause the ocean water to expand. An example of the sea level causing problems could happen on a little Native Island in the middle of an Ocean. On these islands usually where native tribes live, if the sea level rises three fourths of a meter then half of the island will sink. This could happen in many different islands around the world and if the water keeps on rising as it ... ...ications for the rest of the world are serious. Even a partial melting of the polar ice caps will cause sea levels to rise so much as to completely wipe out most coastal cities. This includes such big cities such as San Francisco and New York. Those cities that are not totally wiped out by the water will eventually be hit with hurricanes much more severe than any other one in history. Of course, inland cities are not safe either. Rather than surging seawaters and hurricanes, they will face drought. So what can be done in order to keep from all of that from happening? We need to stop putting so much pollution in to the air. No matter what there will always be a little bit of Carbon Dioxide omitted into the atmosphere. If we could just limit all the coal and fossil fuels that we burn, there will not be so much â€Å"greenhouse gases† and it would keep all of that from happening so quickly. There have also been many attempts by the United States Presidents Administrations in order to help slow down the effect. In my lifetime I know that I won’t see anything too drastic happen due to global warming, but there is a chance that my children and grandchildren will. Hopefully they wont.

The Effects of Television on Child Development Essay -- TV Television

Our generation has been raised in a technological advanced world and there has been definite controversy over many of these innovations that this new culture has brought. An innovation that has troubled the youth of America for many years is television. Although there is no certainty to eliminate this 'plug-in drug,'; there are many ways to control and monitor your television as a parent.   Ã‚  Ã‚  Ã‚  Ã‚  Children between two and eleven years of age watch an average of 25 hours of television a week.(Children's Television) Which means that children spend more time watching television than in school. With that statistic it is no wonder why this is such a huge problem that this nation has to deal with.   Ã‚  Ã‚  Ã‚  Ã‚  There are many facts that show how children are affected by television. The most obvious is the effects that television has on the brain. 'Television interferes with the development of intelligence, thinking skill and imagination.';(LimiTv) A huge element of thinking is taking from what you already know and deciding how it applies in different situation. School makes you do this, but television does not. Michael and Sheila Cole, sociologist, say that 'Children socialized to learn from television had lower than normal expectations about the amount of mental effort required to learn from written texts, and tended to read less and perform relatively poorly in school.';(Development of Children 24) Which means that it takes very little effort to follow a television show and kids are raised on television believe that it takes less effort to learn from television rather than books because they have been 'spoon-fed'; information by television. 'Opportunities for a child's imagination to develop are also denied by habitual viewing.'; (Neural Activity and the Growth of the Brain) Children need some unstructured time to allow imagination skills to form by thinking about a book or story, a conversation, or an event. 'Television also conditions a child to dual stimui: sound and images.';(Neural Activity and the Growth of the Brain) The constant and rapidly changing sound and images can condition a child to expect the level of televisions in other situations. The problem with this is that in school children are called upon to speak, to listen, to work some problems, or read, and none of these tasks contain the 'dual stimula'; that children expect from television. Dr. Hinto... ...-off fail because each parent has different opinions, sending mixed messages to the children. Confidently present the idea of a turn-off, giving all the reasons you think is worthwhile. Make straightforward deals 'If you'll do this, I'll do†¦). And even if you can't get outright participation, try for a show of solidarity in front of the children. Presenting the idea to pre-school children and toddlers does not require advance discussion. In most cases, all that is needed is a matter of fact statement that we will not be watching television this week. Also, getting company for you television turn-off is valuable. Support from friends and neighbors, as well as teachers and classmates can be a great help. A turn-off is more enjoyable if other families are involved. During this turn-off time you will find that your kids, as well as you have, a lot of more time on your hands. During this time that your children are not watching television there is many enjoyable activities that your children will find fun and that are educational as well, see appendix. These great ways to have fun with your children are a great alternative to television and your children will love these games also.