First‚ the pH probes were calibrated using buffer solutions with known pH values of 4.01 ± 0.01 and 7.00 ± 0.01. First‚ the pH probes were placed in the 4.01 buffer and the probe was calibrated‚ then rinsed with distilled water‚ placed into the 7.00 buffer‚ and calibrated again. The pH probe was very close in its measurements‚ as the 4.01 ± 0.01 buffer was measured to have a pH of 4.01 ± 0.01‚ and the 7.00 ± 0.01 buffer was measured to have a pH of 6.87 ± 0.01. After the calibration
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Biochem. J. (1995) 305‚ 17-20 (Printed in Great Britain) 17 RESEARCH COMMUNICATION The effect of low temperatures Nicole MORE‚ Roy M. DANIEL* and Helen H. PETACH on enzyme activity Thermophile Research Unit‚ University of Waikato‚ Private Bag 3105‚ Hamilton 2001‚ New Zealand The stability of two enzymes from extreme thermophiles (glutamate dehydrogenase from Thermococcales strain ANI and f‚- enzymes‚ glucosidase from Caldocellum saccharolyticum expressed in Escherichia
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Experiment 1: "A cis to trans conversion" Saturday‚ June 25‚ 2005 4:19 PM Notes on Theory • Alkenes o They are hydrocarbons with a C=C double bond • Double bonds are stronger and more reactive than single bonds o Hydrocarbons with double bonds used to be known as "olefins"‚ because they had an oily appearance • "Oleum" means oil • "Ficare" means make • Isomers o Geometric isomers have the same molecular formula‚ but a different geometric arrangement • They also have different physical properties
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What is the percent ionization of the acid in Problem #14? a) 100% b) 8.5% c) 0.11% d) 0.0011% e) 0.08% 16. What is the pH of a 0.20 M aqueous solution of the base methylamine‚ CH3NH2? Kb = 5.0 x 10-4. a) 2.0 b) 12.0 c) 16.0 d) 10.0 e) 0.01 17. A buffer solution is prepared by the
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Joanne Kathleen Saori T. Suzuki‚ Laurent Santos‚ Val Justin D.M. Tongco* College of Science‚ University of Santo Tomas‚ Manila Philippines Abstract Salivary amylase‚ found in humans‚ is enzyme that catalyzes the hydrolysis of starch into simpler compounds. Its enzymatic activity is affected by several factors‚ such as temperature and pH. The rates of enzymatic activity of salivary amylase in different temperatures and pH were measured and resulted to be very near 50 C and 7 respectively. However
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LEE ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 88‚ NO. 5‚ 2005 1269 DIETARY SUPPLEMENTS Determination of Total Monomeric Anthocyanin Pigment Content of Fruit Juices‚ Beverages‚ Natural Colorants‚ and Wines by the pH Differential Method: Collaborative Study JUNGMIN LEE U.S. Department of Agriculture‚ Agricultural Research Service‚ Pacific West Area (PWA)‚ Horticultural Crops Research Laboratory Worksite‚ 29603 University of Idaho Ln‚ Parma‚ ID 83660 ROBERT W. DURST and RONALD E. WROLSTAD Oregon
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Bases‚ Buffers and Respiration Darlene E. McDonald WCCC Fall 2012 Ap Lab 071-07 Dr. Roxanne Levandosky August 31‚ 2012 I. INTRODUCTION: A.PURPOSE: a. To define and understand the key terms. ~acid ~buffer system ~base ~acidosis ~pH ~alkalosis ~pH scale ~hypoventilation ~pH indicators ~hyperventilation b. To determine the acidic or base nature and actual pH of various substances. c. To discuss the formation of the carbonic acid/bicarbonate ion buffer system
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plants (Raphanus sativus)‚ by implementing varying pH levels of buffer solution into the soil. We have allotted a total of four days (Tuesday‚ April 10‚ 2012- Friday April 13‚ 2012) to examine the effects of acid rain. Purpose: To investigate the effect of implementing buffer solutions of varying pH levels in soil on the growth in height of radish plants (Raphanus sativus). Independent Variable: The varying levels of pH of buffer solutions placed into the plants’ soil Dependent Variable: The
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answers the question “whose DNA was left behind?”. Materials: * Transfer pipets * Agarose Gel * Dyed DNA samples * Electrophoresis Buffer * Electrophoresis Chamber * Casting Tray * Dams * Comb * Power Supply * Heat Source * 500 ml Beaker or Flask * Distilled Water (used to make buffer solutions) Procedure: 1. After all of the required materials are received‚ rubber dams must close off the ends of the casting tray. 2. A comb
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(841873)‚ MS04-012: Cumulative Update for Microsoft RPC/DCOM (828741)‚ MS03-043: Buffer Overrun in Messenger Service (828035)‚ MS06-035: Vulnerability in Server Service Could Allow Remote Code Execution (917159)‚ MS06-040: Vulnerability in Server Service Could Allow Remote Code Execution (921883)‚ MS09-001: Microsoft Windows SMB Vulnerabilities Remote Code Execution (958687)‚ MS03-039: Microsoft RPC Interface Buffer Overrun (824146)‚ MS04-011: Security Update for Microsoft Windows (835732)‚ MS04-007:
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