The Action Potential An action potential‚ also called a spike‚ nerve impulse‚ and discharge‚ is the rapid reversal of charge of the cell membrane. These changes in charge occur within milliseconds‚ meaning the action potential travels very quickly down the axon in order to convey information over long distances. This transfer of information occurs within six phases and requires the presence of multiple pumps and channels embedded in the membrane to control ion concentration. Phase 1: The Resting
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Samarpan Rai 30/11/012 Physics HL Investigation on Young Modulus Young’s modulus‚ also known as the tensile modulus‚ is a measure of the stiffness of an elastic material and is a quantity used to characterize materials. Young’s modulus is named after Thomas Young‚ the 19th century British scientist. It is a very important concept that categorizes metals on basis of their elasticity. In the last lab‚ we were asked to find out the Young Modulus of two wires: Copper and Steel. I worked on Copper
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INVESTIGATION: On 10-25-2016‚ at approximately 1900 hours‚ I was notified by Sgt. Kelley‚ of a traffic homicide investigation on Boyette Road at the intersection of Balm Riverview Road. I responded to the crash scene and arrived at approximately 1954 hours. Upon my arrival at the scene‚ I met with Detective Parsons # 226877 who forensically mapped the scene and took digital photographs of the crash scene. I also met with Deputy Reinsch # 4588‚ who completed the Department of Highway Safety and
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allow cell phones to be sold without pre-market testing. The rationale‚ known as the “low power exclusion‚” distinguished cell phones from dangerous microwave ovens based on the amount of power used to push the microwaves. At that time‚ the only health effect seen from microwaves involved high power strong enough to heat human tissue. The pressure worked‚ and cell phones were exempted from any type of regulatory oversight‚ an exemption that continues today. An eager public grabbed up the cell phones
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Problem Overview The purpose of this proposal is to show that the absence of motivation and interest in team members during a project can drastically affect its result. If the team members have low morale or a disregard for their tasks and activities on a project they can really affect how a project turns out whether it comes out on time or within budget. Problem Discussion A poorly motivated team can unravel a well-built construction plan in the blink of an eye. An experienced project manager
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DNA Profiling for Crime Investigation Rabia Awan Preston University Islamabad‚ Pakistan rabiawan079@gmail.com Abstract— DNA profiling also called as DNA typing or Gene fingerprinting has been used as a powerful process for identification of humans. Many countries around the world where forensic databases have created to store DNA patterns(DNA profiles) of crime scenes in order to put the actual criminals behind the bars and free the innocent who have been kept in jails for years without any
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An investigation into the specific heat capacity of a solid Introduction: In this experiment I investigated the specific heat capacity of brass and aluminium‚ in order to do this I arranged a series circuit with a heater‚ the heater would go inside the brass and aluminium and heat it for an amount of time in which I decided‚ I also used the voltmeter in parallel. This arrangement made me able to arrange the equation VIT= mcΔθ‚ since the electrical energy in would be equal to the mass times the
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The cells of the adaptive immune system are special types of leukocytes‚ called lymphocytes. There are two main types of lymphocytes‚ B cells and T cells‚ which are derived from hematopoietic stem cells in the bone marrow. T cells are involved in cell-mediated immune response‚ whereas B cells are involved in the humoral immune response. The surface of each lymphatic cell has receptors that enable them to recognize foreign substances. There are two major subtypes of T cells: the helper T cell and
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Seeding cells into needled felt scaffolds for tissue engineering applications SUMMARY: Tissue engineering methods are under development that will enable the repair or replacement of a variety of tissues‚ including articular cartilage and bone. To engineer functional tissue it is necessary that scaffolds initially be seeded with a large number of cells distributed evenly throughout the scaffold structure. It previously has been shown that‚ compared to static seeding conditions‚ seeding scaffolds
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Present State of Indian Cricket team The Indian cricket team is the national cricket team of India. Governed by the Board of Control for Cricket in India (BCCI)‚ it is a full member of the International Cricket Council (ICC) with Test and One Day International (ODI) status. Although cricket was introduced to India by European merchant sailors in the 18th century‚ and the first cricket club in India was established in Calcutta in 1792‚ India’s national cricket team did not play its first Test match
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