General Studies Unit Kaduna State University‚ Kaduna Kaduna State‚ Nigeria GST 203 HISTORY AND PHILOSOPHY OF SCIENCE LECTURE NOTES COURSE INTRODUCTION: This course is designed with the objectives of not only educating students on the historical developments that have taken place in the fields of science and technology and the philosophical basis on which achievements were made but to stimulate discuss and interests in the minds of students irrespective of the course they offer in the
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Office Use Only | | | | | | | | | | | | Monash University Semester Two Examination Period 2010 Faculty Of Science EXAM CODES: CHM1022 TITLE OF PAPER: CHEMISTRY EXAM DURATION: 3 hours writing time READING
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6 years | 511.0‚ 1274.5 | Zinc-65 | 304510 TBq/Kg (8230 Ci/g) | 244 days | 511.0‚ 1115.5 | Tritium (Hydrogen-3) | 357050 TBq/Kg (9650 Ci/g) | 12.32 years | 5.7 (average) | Alpha emission only Isotope | Activity | Half-life | Energies (KeV) | Polonium-210 | 166500 TBq/Kg (4500 Ci/g) | 138 days | 5304.5 | Isotope | Activity | Half-life | Radiation types | Energies (KeV) | Caesium-137 | 3256 TBq/Kg (88 Ci/g) | 30.1 years | Gamma & beta | G: 32‚ 661.6 B: 511.6‚ 1173.2 |
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Table of Contents Components of cigarette smoke 2 Effects of EACH component of Cigarette Smoke on the Human Body 4 Secondhand Smoke 11 The effects of smoking on pregnancy 14 Four ways the government sought to decrease the effect of smoking 17 Should smoking be banned and Why 18 References 20 Components of cigarette smoke One well-known fact about cigarettes is that a single cigarette contains over 4‚000 chemicals. And of course‚ many of these chemicals are actually toxic
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Identification and Production of Materials ================================ Ethene‚ Polymers and Ethanol ================================ Catalytic Cracking Oil refineries need to balance their outputs of various products (petrol‚ diesel‚ fuel oil‚ etc.) to match the demands of the marketplace. Catalytic cracking is the process in which high molecular weight (high boiling point) fractions from crude oil are broken into lower molecular weight (lower boiling point) substances in order to increase
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2011 H I G H E R S C H O O L C E R T I F I C AT E E X A M I N AT I O N Physics Total marks – 100 General Instructions • Reading time – 5 minutes • Working time – 3 hours • Write using black or blue pen Black pen is preferred • Draw diagrams using pencil • Board-approved calculators may be used • A data sheet‚ formulae sheets and Periodic Table are provided at the back of this paper • Write your Centre Number and Student Number at the top of pages 9‚ 13‚ 15‚ 19 and 21 Section I Pages
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CHEMISTRY OF NATURAL PRODUCTS Terpenoids Sameena Bano Department of Chemistry Faculty of Science Jamia Hamdard New Delhi-110062 (24.09.2007) CONTENTS Introduction Classification of Terpenoids Isolation of mono and sesquiterpenoids General properties of Terpenoids General methods of structure elucidation Terpenoids Citral Menthol Camphor Eugenol Keywords Terpenes‚ isoprene‚ citral‚ menthol‚ camphor and eugenol 1 Introduction There are many different classes of naturally occurring
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Chemistry (Chapter 4-9‚ 12) *Ionic compounds have relatively high melting temperatures. *Know about polar bonds‚ nonpolar bonds‚ avogadro’s number‚ and calculating the atomic mass (unit?) * Chapter 4: Basically about theories of atoms and the atom itself 4-1: Theories The Greeks believed that all matter was composed of earth‚ fire‚ air and water. Democritus: the first person to propose the idea of atoms (that matter was not infinitely divisible): atomos. “Atoms are solid‚ homogenous
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H2 Chemistry 9647 Term 3 Block Test 2010 – Examiner’s report H2 CHEMISTRY 9647 Paper 2 (Section A) Structured Questions Question 1 – Atomic Structure and Redox Titration Most elements exist in nature as mixture of isotopes. At present‚ there are about 1600 known isotopes‚ of which only one-sixth are stable. The unstable isotopes lose energy by emitting ionising particles or radiation through the process of radioactive decay. Ernest Rutherford and later Paul Villard discovered the three
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Cytotoxic and Genotoxic Effects of Gutkha using Allium cepa Assay EKTA BHATTACHARYA Roll BGC/BOT No. 112001 M.Sc Semester IV Examination 2013 Under the supervision of Dr. Shyamal Kr. Chakraborty Associate Professor‚ Cytogenetics Laboratory‚ PG Dept of Botany‚ Barasat Government College Cytotoxic And Genotoxic Effects of Gutkha using Allium cepa Assay EKTA BHATTACHARYA Roll BGC/BOT No. 112001 M.Sc Semester
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