Photocatalytic degradation of methylene blue using TiO2 nanoparticles Nupur Mittal Chemical Engineering‚ IIT (BHU) Varanasi. Abstract: The aim of this research is to reduce the pollution caused by methylene blue dye in waste water coming from textile industries. For this purpose‚ TiO2 nanoparticles are made as they show good photocatalytic activity in degradation of dyes into harmless products. Synthesis is done using titanium butoxide and 2-propanol. The particles formed were a little larger
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Modernization and Dependency theory Nowadays the rapid development of the word and the growing integration of countries can hardly fail to affect the development of new theories which attempt to explain the relationship between countries and the existing inequality between developed countries and countries of the third world. In this respect‚ it is possible to refer to Modernization theory and Dependency theory which‚ being quite different‚ still have certain similarities
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Teachers also must deal with their students having the resources to cheat by using the internet to give them the answers. The growing teenage dependency on the internet has both a negative and positive impact on the world. Some people may say that teens are not too dependent on the internet. Teenagers use to internet to complete homework‚ projects‚ and study for tests because of all the resources available. The internet provides a large collection of online books‚ newspapers‚ and magazines‚ allowing
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Alloy - An alloy is a substance made by melting two or more elements together‚ at least one of them a metal. An Example: Examples of alloys include brass‚ bronze‚ 14k gold‚ and sterling silver. covalent bond - A covalent bond is a chemical link between two atoms in which electrons are shared between them. An Example: There is covalent between the oxygen and each hydrogen in (H 2 O). Each of the bonds contains two electrons - one from a hydrogen atom and one from the oxygen atom. Both atoms
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Exley Chemical Case Analysis Introduction The purpose of this analysis is to offer insight into difficulties experienced by Exley Chemical Company. Case analysis will provide an objective view of the identified problems (both macro and micro)‚ the causes‚ affected systems‚ alternatives and recommendations. In a collaborative effort‚ this report reflects multiple observations and opinions regarding the case analysis. Analysis I. Problems A. Macro Lack of coordination within the companies
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The Fast Food Dependency Thesis: The fast food industry is entirely unhealthy‚ disintegrating not only our health but also many other things‚ including our morals and expectations. I. The fast food industry provides the world with food that is diminishing our health. a. Restaurants not required to provide nutritional info b. Restaurant secrets revealed c. Proportion sizes and names change II. David Kessler plays a big role in reconstruction of the FDA. d.
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Dependency of Fossil Fuels The flip of a switch‚ turn of a key‚ or the press of a button is all it takes to power up almost everything today. One simple motion holds the key to our future and unlocks our past‚ but at what price? With sources that were once thought to be endless‚ energy consumption and its byproducts has now become a front runner among debates. A far sight from the campfire and miles away from its full potential what does tomorrow hold for energy consumption and its
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COM 073 4/14/2011 The Effects of Dependency on Technology Since the days of the industrial revolution‚ man has always wanted to improve his environment‚ or to make his life ceasier. Whether it was a way to speed up production of goods‚ better communication‚ or just improving and existing
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where greater society has come to question it. The highly debated question on whether it should be allowed for learning relates to the dependency issues‚ the ability to communicate or focus on the task at hand‚ and copyright or plagiarism issues. No matter how some teenagers differ‚ most all have had their learning affected by themselves or even others. Dependency issues have been a major problem for teenagers when it comes to technology. They rely a great deal on who is doing what and how many
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Characteristics of both bonds: * Occur between 2 atoms * Composed of 2 electrons * Have both ionic and covalent characteristics * Together = 100% * Both bonds are measured on an electronegativity scale * Both contain a nonmetal * Chemical bonds * Are determined by using the “magic number” (1.67) * Have bond angle and bond axis Characteristics of metallic bonds: * In metals (d-block electrons only..because of shape and prop.) * They’re delocalized (no electron ‘belongs’
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