Available online at www.sciencedirect.com South African Journal of Botany 76 (2010) 652 – 654 www.elsevier.com/locate/sajb Chemical composition of the wood and leaf oils from the “Clanwilliam Cedar” (Widdringtonia cedarbergensis J.A. Marsh): A critically endangered species G.P.P. Kamatou a ‚ A.M. Viljoen a‚⁎‚ T. Özek b ‚ K.H.C. Başer b a Department of Pharmaceutical Sciences‚ Faculty of Science‚ Tshwane University of Technology‚ Private Bag X680‚ Pretoria 0001‚ South Africa b Department
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Acetylcholinesterase and Butyrylcholinesterase substrate selectivity and various acting cholinesterase inhibitors Introduction Cholinesterases are a group of enzymes present in mammals which breakdown certain neurotransmitters by hydrolyzing the ester bonds within a molecule (Rang & Dale‚ 2007). There are two major types of enzymes‚ acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). Though similar in structure‚ they differ in distribution‚ function and substrate specificity. AChE is
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GRADE 11 CHEMISTRY (30S) Final Practice Examination Answer Key GRADE 11 CHEMISTRY (30S) Final Practice Examination Answer Key IInstructions The final examination will be weighted as follows Modules 1–3 Modules 4–6 The format of the examination will be as follows: Part A: Fill-in-the-Blanks Part B: Multiple Choice Part C: Short Answer Total Marks Include units with all answers as required. Useful Information You will need the following in order to complete this examination: n n n n 15–20% 80–85%
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EXPERIMENTAL STUDY TO IMPROVE THE PERFOMANCE OF NEEM OIL BIO DIESEL FUELLED SINGLE CYLINDER DIESEL ENGINE USING LPG INDUCTION SYSTEM Submitted in partial fulfillment for the award of the degree Of BACHELOR OF TECHNOLOGY In AUTOMOBILE ENGINEERING By HARSHAL AGARWAL (11108037) MITHUN GUPTA (11108054) OM PRAKASH KUMAWAT (11108065) Under the guidance of Dr. B NAGALINGAM (Professor‚ Department of Automobile Engineering) FACULTY OF ENGINEERING AND TECHNOLOGY SRM UNIVERSITY (under section 3 of
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consistent with the previously reported studies (Bhattacharjee‚ 2016; Chen et al.‚ 2016; Qu et al.‚ 2011; Shen et al.‚ (In Press)). The highest peak areas of the chemical compound analyzed by GC-MS correspond to cyclopropyl carbinol; 2-hydroxy-3-methyl-2-cyclopenten-1-one; 1‚2-benzenediol; phenol‚ 4-ethyl-2-methoxy; 2-methoxy-4-methylphenol. In general‚ chemical composition was similar to the poplar wood sawdust reported by Gu et al.
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Disadvantages: • highly water soluble • short duration of effect • gastric pH of 7 or above • can cause belching and flatulence Benefits: • sparkling flavor 2. ALUMINUM HYDROXIDE Forms: a. Aluminum Hydroxide Gel (suspension) • contain aromatics and sweetening • not more than 0.5% preservatives b. Dried Aluminum Hydroxide Gel (powder) • colloidial – great adsorptive powers • amphoteric characters Disadvantages: • loss of antacid properties on aging • causes constipation • causes
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The Open Mineral Processing Journal‚ 2011‚ 4‚ 25-44 25 Open Access Flotation Frothers: Review of Their Classifications‚ Properties and Preparation Hamid Khoshdast* and Abbas Sam Department of Mining Engineering‚ Faculty of Engineering‚ Shahid Bahonar University‚ 76169133‚ Kerman‚ Iran Abstract: The importance of frothers in flotation is widely acknowledged‚ particularly in terms of their role with respect to bubble size‚ and the stability and mobility of the froth phase. These factors
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mixture of cyclic hemi-acetals (ring) and open-chain (acyclic) form within aqueous solution. The ring of D-glucose consists of 5 carbons and oxygen which each carbon is linked to a hydroxyl group with exception of the 5th carbon which is linked to a methyl-hydroxyl group. D-Glucose has 4 chiral centers when it is in ring form which the anomeric carbon appears at C1 which lead to the structure of α(axial‚ down) and β(equatorial‚ up) position 2. The ratio of this anomer exists within the aqueous state
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Thin Layer Chromatography Submitted in partial fulfillment of the requirements for: CHE 324 Organic Chemistry Laboratory Dr. Robert Duncan Fall Semester 2012 Caitlin Inman‚ Team Leader October 9‚ 2012 Tyler Byrd‚ Data Collection Shared Role‚ Technique Expert Introduction: “Chromatography is used to separate components of a mixture. For example‚ imagine a mixture of wood pieces‚ pebbles‚ and large rocks to be separated and the chromatography setup as a stream. Flowing water
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GajendraUjjenia Rajiv Gandhi Institute of Petroleum Technology Catalysis in Hydrotreating and Hydrocracking
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