The supply of oil, however, is far from limitless. According to the New York Times, in March 2011, economists at the major international bank HSBC warned that less than 50 years' supply of oil is left. And for the second disadvantage, many synthetic polymers' most desirable feature is their chemical inertness -- their resistance to various kinds of chemical degradation. This same property, however, also means they last a long time once they are thrown away. According to a 2007
[1] 2.1 Reactions and Products The FT process or FT synthesis is a set of catalytic processes for converting synthesis gas (syngas, carbon monoxide hydrogen and/or other gases mixture) into liquid hydrocarbons. [2] The reactions in the FT process are generally described as the following: Alkanes: (2n + 1)H2 + nCO ⇒ CnH2n+2 + nH2O
of CuO nanoparticles [8-9]. Basically, sol-gel method is divided into two categories aqueous and non-aqueous sol-gel methods both are beneficial for material preparation with simple laboratory equipment. Also, it gives various morphologies at the synthesis stage (chemical transformation of the molecular precursor into the final oxidic network) [10]. The aqueous sol-gel method has popular to fabricate bulk metal oxides; they have a few limitations, when it works at their nanoscale counterparts. It becomes
Abstract Magnetic polymer nanocomposites have attracted broad interest for hyperthermic cancer treatment because they are non-toxic, biocompatible, and can be remotely heated by alternating magnetic fields. The magnetic induction heating behavior provides a great benefit in biomedical applications, such as targeted drug delivery, and magnetic separation. In situ formation of an organic or polymer layer on their surface is one of the efficient methods for decreasing the aggregation between the nanoparticles
bacitracin: works by inhibiting peptidoglycan synthesis in actively dividing bacteria which normally results in osmotic lysis. b. nystatin: exerts its antifungal activity by binding to ergosterol found in fungal cell membranes. Binding to ergosterol causes the formation of pores in the membrane. Potassium and other cellular constituents leak from the pores causing cell death. c. tetracycline: exert their bacteriostatic effect by inhibiting protein synthesis in bacteria. This antibiotic prevents
of De-esterification for Synthesis of Benzoic Acid BATCH REACTOR Shane Bulk Chris Crosley David McGuire Max Skula Yunjing Song Shriram Sundarraj Nelson Zhou 155:416 Process Laboratory II Professor Jerry Sheinbeim January 28 – February 28, 2014 ABSTRACT The observed reaction that took place in this experiment was the de-esterification of ethyl benzoate to form benzoic acid. This experiment was used to determine the rate constant k of the synthesis of benzoic acid at different
Nanocomposites A nanocomposite is multiphase material consist one of the phases has one, two or three dimensions of less than 100 nm. Polymer nanocomposities have existed for decades. Term “nanocomposites” first appeared in 1994[Lan & Pinnavaia (1994), Lan et al. (1995), Giannelis(1996)]. After this a lot of researches started on the field of various fillers. Due to increased demands for the improvement in the performance of polymer materials led to emergence of new technologies. In these days,
As with organic acids, amino acid compounds also play a role in mineral uptake into plant tissue, because of the increase permeability effect of the amino acid on the cuticle (Table 5.5). Table 5.5: Amino acid –Advantage and Disadvantage Amino Acids-Advantages Amino Acids-Disadvantages Amino acids are one of the natural systems a plant utilizes to translocate and utilize minerals Enzymatically hydrolyzed protein is expensive to produce The groups of amino acids in NUE Amino minerals have been proven
History The attempt for synthetic diamond was began in late 1800 with some unclarified reports of synthesis. Henri Mossain, a French chemist has done early works on synthetic diamonds by using electric arc discharge. Later Sir Charles Algeornon Passons tried to reproduce Moissan’s method. But later passon revealed that the diamonds produced by him were likely synthetic spinel [1, 2]. In 1954, H.Tracy Hall’s group used the belt press method and reported reproducible synthetic diamond
ingestible product. The process of creating LSD has both benefits and disadvantages. The positive side of LSD arises because of the sheer volume that can be produced. Because the active dose of LSD is such as small concentration that five or six kilograms of the finished LSD drug can represent as many as one hundred million doses of the drug in its ingestible form. The miniscule size of the dosages represents another advantage in that it made the drug much easier to conceal than other drugs such