CHM 116 Lab Investigations of Buffers I. Purpose The purpose of this experiment was to get an understanding as to how to properly prepare chemical buffers. Also part of this experiment was to gauge the effectiveness of the buffers by measuring their pH levels in various titration solutions‚ using a pH meter. II. Procedure To start our experiment we had to prepare Buffer B‚ which was the .060 M Ammonia/Ammonium solution. Using 3.0 M ammonia‚ we had to calculate
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University of Oxford Computing Laboratory MSc Computer Science Dissertation Automatic Generation of Control Flow Hijacking Exploits for Software Vulnerabilities Author: Sean Heelan Supervisor: Dr. Daniel Kroening September 3‚ 2009 Contents List of Figures v List of Tables vii List of Code Listings ix Acknowledgements xi Abstract 1 1 Introduction 3 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Motivation . . .
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BUFFER SOLUTIONS CONTENTS 1. Introductions. 2. Principles of buffering. 3. Applications a. Simple buffering agents. b. "Universal" buffer mixtures. c. Common buffer compounds used in biology. 4. Buffer capacity. 5. Calculating buffer pH a. Monoprotic acids. b. Polyprotic acids. 6. Biblography. INTRODUCTION A buffer is an aqueous
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Buffer Preparation (Gozani Lab) 1. 1 M Tris-HCl Buffers pH Volume (L) TrisBase (g) HCl (ml) pH 7.0 2 242.2 150-155 pH 7.5 2 242.2 120-125 pH 8.0 2 242.2 80-85 Autoclavable. 2. EDTA 0.5 M (pH8.0) 0.5M‚ 1L: 148 g EDTA + ~30-40 g NaOH to adjust pH (or 186 g EDTA-Na.2H2O + ~20 g NaOH) Note: pH adjusted by NaOH is essential for solubility. Autoclavable. 3. TAE DNA Electrophoresis Buffer (50 X) (2 M Tris‚ 50 mM EDTA) 2L 484 g Tris 114.2 ml glacial acetic acid 200 ml 0.5 M EDTA 8.0 To make
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BUFFER SOLUTION (ACID) An acidic buffer solution is simply one which has a pH less than 7. Acidic buffer solutions are commonly made from a weak acid and one of its salts - often a sodium salt. Objectives: 1. Measure the pH of the unknown solution first with indicators and then with pH paper. 2. compare the buffer solution with both a strong acid and a weak acid materials: 2 30 mL beakers 2 100mL volumetric flask 1 10mL pipet 2 aspirator 1 50mL graduated cylinder 1 10mL graduated
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Microsoft Windows Task Scheduler Remote Overflow (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
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Course content of CEH :Exam – 312-50 Module 1: Introduction to Ethical Hacking • • • • • Why Security? Essential Terminologies Elements of Security The Security‚ Functionality‚ and Ease of Use Triangle What Does a Malicious Hacker Do? o Reconnaissance o Scanning o Gaining access o Maintaining access o Covering Tracks • • • • • • • • • • • • • • • • • • Types of Hacker Attacks o Operating System attacks o Application-level attacks o Shrink Wrap code attacks o Misconfiguration attacks
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Page Ethical Hacking and Countermeasures http://www.eccouncil.org EC-Council Certified C EH Ethical Hacker EC-Council TM Page http://www.eccouncil.org Hackers are here. Where are you? Computers around the world are systematically being victimized by rampant hacking. This hacking is not only widespread‚ but is being executed so flawlessly that the attackers compromise a system‚ steal everything of value and completely erase their tracks within 20 minutes. The goal
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Buffers‚ and pH‚ and Diffusion oh my The pH of a solution is the measure of the concentration of charged Hydrogen ions in that given solution. A solution with a pH lower than seven is considered to be acidic. A solution with a higher pH is a base. It is very important for organisms to maintain a stable pH. Biological molecules such as proteins function only at a certain pH level and any changes in pH can result in them not functioning properly. To maintain these constant pH levels‚ buffer solutions
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Experiment 3 : Preparation of Solutions and Buffers Objectives : 1. To study and understand the principle theory and formula of preparation of buffer and solution. 2. To learn the methods of buffer and solution preparation. 3. To focus on concentration units of molarity‚ percentage of concentration‚ and dilution of solution. Introduction : When a substance‚ called a solute‚ is dissolved in another substance‚ called the solvent‚ a solution is formed. A solution is known as a homogeneous
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