The cardiac conduction system of the heart consists of specialized muscle cells that generate and send rhythmic electrical impulses to the myocardium in order for the heart to contract (Cardiac Conduction System‚ 2016). When there is the normal rhythm of the heart it is called sinus rhythm and any deviation from sinus rhythm is called an arrhythmia (Saladin‚ 2012). Electrocardiograms (ECG) record the electrical impulses and help determine when there are any abnormalities in the way the heart functions
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Conduction Through A Thick-Walled Tube This problem is important in the process industries‚ but we do need to make the distinction between thick and thin walled pipes. In general thin walled pipes can be considered by the previous analysis – but assuming that the pipe wall is effectively unwrapped so that it looks like a flat plate‚ with the process fluid on one side and the ambient condition on the other. The situation for thick pipes is‚ however‚ more complex. [pic] The figure shown above
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Forced Convection Heat Transfer Mahmood Mohsin AL-Khusaibi 85135 Amur Sultan Al-Habsi 86260 Rashid Nasser Al Shabibi 85362 Aim: The objective of this experiment to investigate the use of extended surface to improve heat transfer through surfaces. In addition‚ another target is to demonstrate the effect of the fluid speed on the heat transfer by convection. Introduction: Heat transfer by convection is one of three heat transfer methods which are conduction‚ radiation and convection
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Preparation Outline Public Speaking March 8‚ 2013 Specific Purpose: To inform my audience about radiation therapy. Central Idea: To clearly understand radiation therapy‚ you must know about the different types and side effects. Introduction During my life‚ I have seen how harsh cancer can be. It has took a toll of many people’s lives and changed families all over. I have witnessed it first hand as it has affected my family and has taken people from me who were very important. Experiencing
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Concepts of Radiation Radiation * Emission of energy from an atom and the transmission of this energy through space. * Energy propagated in a material medium or space. * Energy in transit. What are the types of radiation? * Radiation is of two general types in our environment. * They are called non-ionizing and ionizing. Ionization * the energy transferred to the electrons causes them to be pulled away or removed from an atom entirely. * The result is the
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Adaptive Radiation An example of adaptive radiation occurring after a mass extinction is the extinction that killed off the dinosaurs. What caused this mass extinction was when a massive comet hit earth‚ off the Yucatan Peninsula. However‚ the mammals that survived this catastrophic event for the most part‚ survived because they could burrow in holes for shelter. Regardless‚ about 90% of all life on earth was destroyed. This led to an opportunity for the surviving plants and animals to disperse
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level. In addition‚ there is a disc osteophyte complex and disc space narrowing at L5-S1 with mild spinal stenosis and left greater than right mild foraminal stenosis. Furthermore‚ there is impingement upon the left L5 nerve root. EMG and nerve conduction report dated 05/06/14 revealed evidence of bilateral L5 lumbar radiculopathy and bilateral peripheral neuropathy. Per operative reports‚ IW underwent left L4-5 and L5-S1 transforaminal ESI on 11/07/2014; 05/15/2015; and 07/24/2015‚ and left L4-5
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Heat Conduction along a Composite Bar Objective To study the conduction of heat along a composite bar and evaluate the overall heat transfer coefficient. Theory Thermal conduction is the mode of heat transfer which occurs in a material by virtue of a temperature gradient within it. A solid is chosen for the demonstration of pure conduction since both liquids and gasses exhibit excessive convective heat transfer. In a practical situation‚ heat conduction occurs in three detentions‚ a complexity
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Forced Convection Heat Transfer I. Introduction This laboratory deals with forced convection‚ forced convection can be considered as a staple of heat transfer. That is to say that forced convection can be found in almost any heat transfer problem‚ and thus understanding its importance and how it affects a given problem is one of the more important learning objectives/outcomes of heat transfer. When dealing with forced convection the most important section‚ after understanding how convection
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Radiation Exposure Do you know much radiation you are exposed to everyday? Many people are not aware of the radiation levels around them on a daily basis. I believe that exposure to radiation should be minimal. I think protection and prevention is vital. Being aware of the health risks and what can be done to protect yourself should be a well known piece of knowledge. If followed‚ this knowledge can help reduce radiation exposure levels. Exposure to radiation is higher today than it has ever
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