ABSTRACT Concrete has been the most preferred construction material for over five decades. It is being increasing day to day all over the world due to its versatility‚ mould ability‚ high compressive strength and many more advantages. For several years beginning in 1983‚ the problem of the durability of the concrete structures was a major topic of interest in Japan. The creation of durable concrete structures requires adequate compaction by skilled workers. One solution for the achievement of durable
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Learning Activity 1 Preparation of Acetanilide Abstract Recrystallization is a common method of purifying organic substances through the difference in solubility at different temperature. In this experiment‚ acetanilide was produced by acetylation of aniline with acetic anhydride. The crude acetanilide was dissolved in a solvent in a heating water bath. The solution was cooled slowly in an ice bath as crystals form out. As the compound crystallizes from the solution‚ molecules of other compounds
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dalimss EV.S PROJECT Disease caused by the Environmental exposure MADE BY- [Type the author name] [Year] Environmental Diseases In epidemiology‚ environmental disease is disease caused by environmental factors that are not transmitted genetically or by infection. Apart from the true monogenic genetic disorders‚ environmental diseases may determine the development of disease in those genetically predisposed to a particular condition. Stress‚ physical and mental abuse‚ diet‚ exposure
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DV 1. Customer satisfaction 1. Customer satisfaction is a key factor in formation of customer’s desires for future purchase (Mittal & Kamakura‚ 2001). 2. Furthermore‚ the satisfied customers will probably talk to others about their good experiences. This fact‚ especially in the Middle Eastern cultures‚ where the social life has been shaped in a way that social communication with other people enhances the society‚ is more important (Jamal & Naser‚ 2002). 3. Customer satisfaction leads to repeat
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Kimpton Hotels’ Earth Care Program Kimpton hotel was one of the first hotels which emphasize nature preserving in their line of business. Thus‚ to ensure their social responsibility is carried‚ Kimpton hotels cultivated a program known as “EarthCare Program” in 1981. Not only boosting their reputation toward society‚ Kimpton Hotels was labeled as an eco friendly hotel worldwide. To realize the program from mere theory to reality‚ Kimpton uses environmentally friendly products for their hotel such
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with water. 1 (4) Give the IUPAC name of the organic compound 1 O II (CH3)2 C CH C CH3 = − − (5) Name the monomers of nylon 2 or nylon 6 ploymer. 1 (6) Give one example of an artificial sweetener used by the diabetic patients. 1 (7) Direct nitration of aniline is not carried out. Explain why? 1 (8) What type of linkage holds together the monomers of D.N.A.? 1 (9) Examine the illustration of a portion of the defective crystal given below and answer the following questions. (5) (i) What are
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Benzo[b]fluoranthene‚ Benzo[k]fluoranthene‚ Benzo[ghi]perylene‚ Benzo[a]pyrene‚ Chrysene‚ Dibenz[a‚h]anthracene‚ Dibenzo[a‚e]pyrene‚ 7‚12-Dimethylbenz[a]anthracene‚ Fluoranthene‚ Fluorene‚ Indeno[1‚2‚3-cd]pyrene‚ 3-Methylcholanthrene‚ 2-Methylnaphthalene‚ Naphthalene‚ Perylene‚ Phenanthrene‚ Pyrene)‚ 11 benzene derivatives (Acetophenone‚ Aniline‚ Benzoic acid‚ Benzyl alcohol‚ 2‚4-Dimethylphenol‚ Hydroquinone‚ 2-Methylphenol‚ 3-Methylphenol‚ 4-Methylphenol‚ Phenol‚ Resorcinol)‚ 4 heterocyclic compounds (Dibenzo[a
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POLLUTIONS Environmental issues become one of the top topics nowadays. Environmental issues like pollution‚ climate change‚ global warning and deforestation are being discussed this day. Pollution is one of biggest concern in the environmental issues because it covers all which are water pollution‚ air pollution‚ soil pollution and noise pollution. Pollution is contaminants that can cause an adverse change s to environment and human health. Pollutants is components of pollution where it can be foreign
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The present study describes a reliable method for callus induction of Hybanthus ennaspermus‚an important medicinal plant plant. Calli were in vitro initiated from leaves segments using Murashige and Skog (1962) basal media. The effect of NAA (_-naphthalene acetic acid) and 2‚4-D (2‚4-Dichlorophenoxy acetic acid) on callus induction was investigated. It was found that growth regulators and their concentrations have obvious effects on the callus induction‚ the increment of callus index and callus physical
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documented and citizen’s well waters have been tainted with toxic chemicals"‚ according to the Climate Progress. (Foster) Many of the chemicals used in the fracking process are proven toxins. These include benzene‚ ethyl-benzene‚ toluene‚ xylene‚ naphthalene‚ and other hazardous chemicals that are harmful if any contact is made. For these reasons‚ fracking in the United States should be halted. All around the United States‚ there are areas where the drilling takes place. Everywhere‚ people were told
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