Experiment 10 - Flow Characteristics of Valves NAME: CHER SUNG KANG GROUP NUMBER: B21 EXPERIMENT NUMBER: 10 DATE OF EXPERIMENT: 28/11/2011 DATE OF REPORT SUBMISSION: 5/11/2011 MARK/20 (for demonstrator use): Introduction Aim: 1. Describe operation of various types of valves 2. Measure frictional losses due to flows through different valves 3. Identify sources of errors Background & theory: In this experiment‚ the relationship between volumetric flow rate and percentages
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Salt from green beans Name: Ashni Couprie and Dennise Susanto Class: 5c Introduction From previous experiments we ’ve learned that salt is extracted from green beans. To be more specific: salt is extracted from when the beans are cooked in water in which salt has been dissolved. This experiment is based upon the osmoses theory. According to this theory the cell walls of the green beans are what we call a semi permeable membrane. This membrane only lets water through and not the substance
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The effect of varying temperature on thee Rennin enzyme Abstract The purpose of this experiment was to see what affect different temperate had on the reaction rate of the enzyme rennin. The experiment was performed by placing test tubes filled with renin and milk into water bath which was heated or cooled to one of the temperatures trialed. The hypothesis justified because it found because it though data that the enzyme reacted faster with the 45° temperate because it was
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Definitions of stress: The most commonly accepted definition of stress (mainly attributed to Richard S Lazarus) is that stress is a condition or feeling experienced when a person perceives that “demands exceed the personal and social resources the individual is able to mobilize.” In short‚ it’s what we feel when we think we’ve lost control of events. http://www.mindtools.com/pages/article/newTCS_00.htm The UK Healthy and Safety Executive defines stress in the following way: "the adverse
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created certain amounts of stress. The material presented thus far may have created feelings of anxiety‚ anger‚ and sadness. The multitude of problems and needs that I have personally encountered can be overwhelming and can lead job “burnout”. It happens to many people in most occupations. Human services workers may be particular vulnerable to burnout because of emotional stress from trying to assist people who have many emotional and social problems which they seek help. Stress occurs daily. It is not
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Abel Vigil Mr. Menard MGT 220 1 August 2013 Individual Stress Management Stress can be interpreted by a variety of people to be the manifestation of a perceived threat to our existence. In many cases stress has the potential to cripple us‚ but in other instances it may continue our survival. Many factors such as a stressor‚ or an apparent threat‚ may cause a person to act impulsively or place special demands on them. Since our subconscious will react to our environment in such a way that
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Occupational Stress By: David J. Derro (dderro1@netcarrier.com) Opening Statement: This paper will examine some causes and some of the effects of stress on individuals in the work environment. Role overload will be discussed as a major agent of stress at both work and home. Role Underload‚ Role Conflict‚ Role Ambiguity will be discussed briefly for comparison. Examples of stress in the work place will be used to illustrate the broad ramifications of stress in the occupational setting. Examples of
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Stress can be a positive thing - helping an individual to grow‚ develop‚ be stimulated and take action. However‚ if stress exceeds a person’s ability to cope it can impact on their mental and physical health in a range of ways. Some research studies estimate up to two thirds of illnesses seen by GP’s are stress related. In the days of the caveman‚ stress often came in the form of physical threats that required individuals to react quickly and decisively. The body helped out by automatically
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Stress and Coping Stress is the combination of physiological‚ psychological and behavioural effects when people are responding to any challenges or threatening situations. Long term stress reduced the capacity of our body to adapt. Stress influence conception‚ development and result of an illness. The source of stress has to change or adapt to balance our body system (Potter & Perry‚ 1997). Overton (2005) illustrates a good example that when our body is stressed due to the exposure
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What is the difference between pressure and stress? Answer: Pressure is the external force acting over a unit surface area of a material. Stress is an internal force acting over a cross sectional area within the material. It may also be thought of as the internal resistive response of a material to the applied external pressure. They both have the units of force / area. suppose we have a cubical solid mass. We apply external force of few magnitude on it and this force will try to deform the
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