The formation of an action potential can be divided into five steps. (1) A stimulus from a sensory cell or another neuron causes the target cell to depolarize toward the threshold potential. (2) If the threshold of excitation is reached‚ all Na+ channels open and the membrane depolarizes. (3) At the peak action potential‚ K+ channels open and K+ begins to leave the cell. At the same time‚ Na+ channels close. (4) The membrane becomes hyperpolarized as K+ ions continue to leave the cell. The
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Redox potential – CV Acetonitrile Adjusted sensitivity Each ;line represents diff scan rates all been overlayed on one digarm Scan rates ranged from 0 .1 s-1 to 1 Peak due to iodide oxidation is read from +peak to – peak bottom line. Iodide to triiodide Glycol Didn’t work Using equation ip = 2.69 ×105 n3/2 A D1/2 C ν1/2 compare to linear equation y = mx+c y = peak current x = V1/2 c = zero Therefore m is = everything else C = concentration 0.05 M ethylene glycol (acetonitrile
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THE WORK DONE BY A CONSERVATIVE FORCE ALWAYS HAS FOUR PROPERTIES: 1. It can be expressed as the difference between the initial and final values of a potential-energy function. 3. It is independent of the path of the body and depends only on the starting and ending points. 2. It is reversible. 4. When the starting and ending points are the same‚ the total work is zero. The total mechanical energy ME = K + U is constant. Object moving in a uniform gravitational field gravitational a
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on the different security threats on the internet‚ and the different ways to prevent and protect yourself from them. The different threats that are going to be covered are viruses‚ trojan horses‚ hackers‚ spam‚ corrupt IP packets‚ port scanner attacks‚ DOS(denial of service) attacks‚ spider attacks‚ worms and socail attacks. Also‚ I will cover different security practices and computer software and hardware that can help protect and prevent these different attacks on your computer‚ or network
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Toshendra Sharma‚ 113050013 Saptarshi Sarkar‚ 113050044 Pankaj Vanwari‚ 114058001 Under guidance of: Prof. Bernard Menezes Outline Bluetooth history Bluetooth Protocol Layers in Bluetooth Security in Bluetooth Vulnerabilities Attacks/Exploits Demonstration Bluetooth Technology proprietary open wireless technology standard for exchanging data over short distances was originally conceived as a wireless alternative to RS232 data cables It uses short wave length radio transmission
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Potential Energy • Definition and Mathematics of Work • Calculating the Amount of Work Done by Forces • Potential Energy • Kinetic Energy • Mechanical Energy • Power An object can store energy as the result of its position. For example‚ the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly‚ a drawn bow is able to store energy as the result of its position. When assuming
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UNIVERSITY ENTRANCE EXAMINATION PHYSICS Duration : 2 hours Please read the following instructions carefully. 1. This paper is made up of 50 Multiple-Choice questions and comprises ELEVEN (11) printed pages. 2. Do not write on the question paper. 3. Answer all questions and indicate your answers on the answer sheet provided. Marks will not be deducted for wrong answers. 4. Do not take any paper‚ including the question paper or unused answer sheets‚ out of the examination
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Effects of a Cyber Attack on our Nations Infrastructure and Economy Kelly O’Connor HSM 305 Professor‚ Makuch May 5‚ 2010 The damaging effects on infrastructure through cyber terrorism have a critical effect on a Nation that can collapse an economy and destroy a nation’s safety. A very important infrastructure‚ that after 9/11 has changed dramatically‚ is mass transit or trains
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Delusion of a postracial area We might be aware of some stereotypes related to our social identity but what we don’t know much about is stereotype threat. Stereotype threat has been shown to reduce the performance of successful people belonging to a certain negatively stereotyped group. Claude Steele‚ the author of Whistling Vivaldi‚ a social psychologist and Columbia University provost‚ writes about the work he and his colleagues have done on this phenomenon‚ the tendency to expect‚
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* This is a program which appears to be useful‚ what you cannot see is that the program opens your computer to users on the internet to be used maliciously. Most of the time Trojan viruses are used to turn your computer into a bot to maliciously attack more computers on the internet or in your network by spreading the same file. * Email worms * This virus can duplicate itself to no end. It will send itself ro everyone in your address book appearing as an email sent from your email address
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