Free Essays on Hydrologic

The hydrologic cycle is a rotation of water exchange between the land, the ocean, and the atmosphere on earth. It is an amazing fact that water circulates without any loss of water.  ¡Ã‚ °Hydrologic cycle includes evaporation form the sea, movement of water vapor over the land, condensation, precipitation, surface runoff, subsurface runoff, and so on ¡Ã‚ ±. (p.189) Because it is a complex and long process, humans did not recognize what was exactly going on until recent times. Talking about how humans developed the idea of the hydrologic cycle, we begin with the ideas of people from the sixteenth century. They believed that water discharged by springs and streams could not be derived form the rain, for two reasons. The first reason was that rainfall was treated as inadequate in quantity. The other reason was that they believed the earth was too impervious to permit penetration of water very far below the surface. (p.190) However, people from even earlier ages, the ancients, knew that the ocean never overflowed. So they figured that was why the rivers flowed to the oceans. One thing the ancients wondered about was how the water got into the rivers from the seas, and how it lost its salt content. The evidence suggests that the ancients ¡Ã‚ ¯ ideas came from the Bible. In Ecclesiastes 1:7, it says,  ¡Ã‚ ®all the rivers run into the sea, yet the sea is not full; unto the place from whence the rivers come thither they return again. ¡Ã‚ ¯  ¡Ã‚ °Once again the recognition of the role of infiltration in supplying water to springs and rivers began in the sixteenth century ¡Ã‚ ±. (p.190) Leonardo da Vinci is credited with one of the earliest accurate descriptions of the hydrologic cycle. He was a brilliant scientist, and he was in charge of canals in the Milan area at the time. Probably his occupation of being in charge of canals helped him developing his theory about the hydrologic cycle. Whence we may conclude that the water goes form... Free Essays on Hydrologic Free Essays on Hydrologic The hydrologic cycle is a rotation of water exchange between the land, the ocean, and the atmosphere on earth. It is an amazing fact that water circulates without any loss of water.  ¡Ã‚ °Hydrologic cycle includes evaporation form the sea, movement of water vapor over the land, condensation, precipitation, surface runoff, subsurface runoff, and so on ¡Ã‚ ±. (p.189) Because it is a complex and long process, humans did not recognize what was exactly going on until recent times. Talking about how humans developed the idea of the hydrologic cycle, we begin with the ideas of people from the sixteenth century. They believed that water discharged by springs and streams could not be derived form the rain, for two reasons. The first reason was that rainfall was treated as inadequate in quantity. The other reason was that they believed the earth was too impervious to permit penetration of water very far below the surface. (p.190) However, people from even earlier ages, the ancients, knew that the ocean never overflowed. So they figured that was why the rivers flowed to the oceans. One thing the ancients wondered about was how the water got into the rivers from the seas, and how it lost its salt content. The evidence suggests that the ancients ¡Ã‚ ¯ ideas came from the Bible. In Ecclesiastes 1:7, it says,  ¡Ã‚ ®all the rivers run into the sea, yet the sea is not full; unto the place from whence the rivers come thither they return again. ¡Ã‚ ¯  ¡Ã‚ °Once again the recognition of the role of infiltration in supplying water to springs and rivers began in the sixteenth century ¡Ã‚ ±. (p.190) Leonardo da Vinci is credited with one of the earliest accurate descriptions of the hydrologic cycle. He was a brilliant scientist, and he was in charge of canals in the Milan area at the time. Probably his occupation of being in charge of canals helped him developing his theory about the hydrologic cycle. Whence we may conclude that the water goes form...

Pericardiumâ€Anatomy and Function

Pericardium- Anatomy and Function The pericardium is the fluid-filled sac that surrounds the heart and the proximal ends of the aorta, venae cavae, and the pulmonary artery. The heart and pericardium are situated behind the sternum (breastbone) in a position in the middle of the chest cavity known as the mediastinum. The pericardium serves as an outer protective covering of the heart, a vital organ of the circulatory system and cardiovascular system. The primary function of the heart is to help circulate blood to the tissues and organs of the body. Function of the Pericardium The pericardium has several protective functions: Keeps the heart contained within the chest cavityPrevents the heart from over-expanding when blood volume increasesLimits heart motionReduces friction between the heart and surrounding tissuesProtects the heart against infection While the pericardium provides a number of valuable functions, it is not essential for life. The heart can maintain normal function without it. Pericardial Membranes The pericardium is divided into three membrane layers: Fibrous pericardium is the outer fibrous sac that covers the heart. It provides an outer protective layer that is attached to the sternum by  sternopericardial ligaments. Fibrous pericardium helps to keep the heart contained within the chest cavity. It also protects the heart from an infection that could potentially spread from nearby organs such as the lungs.Parietal pericardium is the layer between the fibrous pericardium and visceral pericardium. It is continuous with fibrous pericardium and provides an additional layer of insulation for the heart.Visceral pericardium is both the inner layer of the pericardium and the outer layer of the heart wall. Also known as the epicardium, this layer protects the inner heart layers and also assists in the production of pericardial fluid. Epicardium consists of connective tissue elastic fibers and adipose (fat) tissue, which help to support and protect the inner heart layers. Oxygen-rich blood is supplied to the epicardium and inner heart la yers by the coronary arteries. Pericardial Cavity The pericardial cavity lies between the visceral pericardium and the parietal pericardium. This cavity is filled with pericardial fluid which serves as a shock absorber by reducing friction between the pericardial membranes. There are two pericardial sinuses that pass through the pericardial cavity. A sinus is a passageway or channel. The transverse pericardial sinus is positioned above the left atrium of the heart, anterior to the superior vena cava and posterior to the pulmonary trunk and ascending aorta. The oblique pericardial sinus is situated posteriorly to the heart and is bounded by the inferior vena cava and pulmonary veins. Heart Exterior The surface layer of the heart (epicardium) is directly below the fibrous and parietal pericardium. The external heart surface contains grooves or sulci, which provide passageways for blood vessels of the heart. These sulci run along lines that separate atria from ventricles (atrioventricular sulcus) as well as right and left sides of ventricles (interventricular sulcus). Main blood vessels extending from the heart include the aorta, pulmonary trunk, pulmonary veins, and venae cavae. Pericardial Disorders Pericarditis is a disorder of the pericardium in which the pericardium becomes swollen or inflamed. This inflammation disrupts normal heart function. Pericarditis can be acute (happens suddenly and over quickly) or chronic (happens over a period of time and lasts for a long time). Some causes of pericarditis include bacterial or viral infections, cancer, kidney failure, certain medicines, and heart attack. Pericardial effusion is a condition caused by the accumulation of large amounts of fluid between the pericardium and the heart. This condition can be caused by a number of other conditions that affect the pericardium, such as pericarditis. Cardiac tamponade is pressure build up on the heart due to excessive fluid or blood build up in the pericardium. This excess pressure does not allow the heart ventricles to fully expand. As a result, cardiac output is lowered and blood supply to the body is insufficient. This condition is most commonly caused by hemorrhage due to penetration of the pericardium. The pericardium may become damaged as a result of severe trauma to the chest, a knife or gunshot wound, or accidental puncture during a surgical procedure. Other possible causes of cardiac tamponade include cancer, heart attack, pericarditis, radiation therapy, kidney failure, and lupus.

Motivation Methods Used In the Hotels in Sheffield Coursework

Motivation Methods Used In the Hotels in Sheffield - Coursework Example and J. Clanchy 1997). Throughout this period so, universities in Australia, Canada, USA, UK experienced an internationalisation of their action; together in terms of the number of worldwide students studying intercontinental higher education programmes, and an add to in the width of international students, with around one in ten of the total enrolment make overseas. Frequently, the prevalence of international students that study for an Australia, Canada, USA, UK requirement start from Asia. Dobson et al. state that: Moreover, for part time university students studying human resource management (HRM) as a core subject, chapter will serve as a textbook at higher levels of undergraduate study and postgraduate/Masters study. For business management students studying HRM as a core subject or an option, this text will serve as secondary/further reading for motivation methods. As a sectoral source it builds upon introductions in organizational behaviour, people management or employee relations, and will be useful at higher undergraduate and post-graduate/Masters/Masters in Business Administration (MBA) levels. Social science students m... As a sectoral source it builds upon introductions in organizational behaviour, people management or employee relations, and will be useful at higher undergraduate and post-graduate/Masters/Masters in Business Administration (MBA) levels. Social science students may also be interested in the research, as industrial relations and the employment relationship of part time students with motivation are very important dimensions of the sociology of work. For them this text will represent a rich source of information on contemporary characteristics of service sector work that can exemplify theoretical sociological perspectives, such as fragmentation and feminization of labour, and inform debates on labour process theory. Here the chapter will provide secondary/ further reading on optional courses (Barron, P. and C. 2002). What Are The Significance Of Hotel Industries For Part Time Students in Sheffield For the purposes of this chapter, the term hospitality or Hotel industry (HI) serves as an overarching label for businesses whose primary purpose is to offer food, beverage and accommodation for sale on a commercial basis. The main activities or sub-sectors in the International Standard Industrial Classification of all Economic Activities (ISIC) Division 55 (Hotels and restaurants) are hotels, restaurants, bars (including pubs and clubs) and (contract) catering (International Labour Organization (ILO), 2001:5-6). Table I.1 shows the numbers employed in hospitality-specific occupations in the UK. These are the sub-sectors covered by WERS, by comparable Labour Force Surveys (LFSs) in the European Union (EU) and by much of the academic literature

Some questions to answer Article Example | Topics and Well Written Essays - 500 words

Some questions to answer - Article Example More people need to read the Declaration Independence, Constitution, and law in the Capital. Maybe if lawmakers spent more time doing that instead of raising money for their campaigns, the U.S. would not have as many ignorant lawmakers as there is today. Granny D had to pay a ten dollar fine and was processed as a criminal. I think the system is being twisted by criminals calling themselves politicians and lawmakers. Assignment #2: Pretend that you hug three old persons without any reason and you told them that you love them. Explain your reaction and then explain their reactions It would depend on the three old persons. Some, with Alzheimer’s or feisty personalities, would probably curse or ask if I was crazy. Others would embrace me back and tell me they loved me too. The final group would not have a real reaction, but seemed confused. I would be uncomfortable, because I am not a hug type of person. My discomfort would probably be conveyed. Their reactions would depend on th eir personalities. Old people like young people and other ages all are unique individuals. Some are huggers, some are not. It would depend on the person’s personalities. Just like I am not a hugger, older people would react on their individual personalities. Assignment #3: You have to go to shake your hand with five persons from the Military and tell them "Thank you for your serving" without any reason.

Thermal Conductivity In Physical Engineering Engineering Essay

Thermal Conductivity In Physical Engineering Engineering Essay Thermal Conductivity  is an essential physical property for designing engineering process and measuring the capacity of temperature exchange between heat and cold passing through a material mass. Techniques were developed to measure thermal conductivity in a various materials, Hence the objective of this work was to evaluate the feasibility of utilizing different methods for measuring thermal conductivity as well as construction of the experimental assemble to measure thermal conductivity of numerous materials with the aim of analysis of the experimental data. This paper illustrates the methods of the measurements of thermal conductivity and the process by which it will be brought to a successful culmination. The study of thermal conductivity is important for engineers to know the nature of thermal energy, temperature and how materials store thermal energy as well as to predict the performance of any given material over its lifetime in a specific application. Also to identify the thermal properties of material so as to assess the performance of certain material and develop efficient heat transfer materials for engines and spacecrafts. This project has been taken on board, due to a lack of information and research available on thermal conductivity measurements. Heat is transferred by three procedures which include Conduction, Convection and Radiation. It engages transfer of thermal energy from one place to another. Thermal conductivity is a significant parameter for the analysis of heat transfer through conduction. Conduction takes place due to the particle collision which results in the transfer of thermal energy. Thermal conductivity (k) is an essential property of a material and defined as amount of heat transferred in a unit thickness of materials in a direction because of change in temperature in constant boundary state in a direction perpendicular to the area of transfer. It is measured in watts per Kelvin per meter (WK-1m-1) and determines the rate of energy loss through a material. The project is titled as study of methods for measurement of thermal conductivity. The project will present the literature review about the methods as well as conducting an experiment to measure the thermal conductivity of different materials. In addition, a thorough analysis of the experimental data is to be obtained while performing the experiment. The aims and objectives of this report pursue as: Understanding of theoretical and experimental methods to measure thermal conductivity of solids, liquids and gases. Construction of experimental rig. A thorough analysis of the experimental data. DELIVERABLES 3.1 GENERIC DELIVERABLES Based on the module guide, the following are the generic deliverables for the academic year 2010-2011; Semester Title Start Date Submission Date Semester 1 Preliminary start Monday 27th September Submit Project Planning Report + Log Book Friday 26th November Semester 2 Dissertation start Monday 31st January Project seminars and poster Week commencing 11th April Submission of final report Thursday 28th April Table 2 Delivery dates set by Kingston University for entire project 3.2 PROJECT DELIVERABLES The objectives of the project have been identified and analysed to produce the following deliverables that will have been produced at the end of the project Construction of an experimental rig to measure thermal conductivity of selected material Analysis of the experimental Data Comparison of the results ANALYSIS OF TASKS The tasks that need to be executed in order to achieve the aims of the project, produce the deliverables on schedule and bring the project to a successful end are as follows: Literature review of conductivity methods Journals Books E-resources Research Conductivity methods of solids Conductivity methods of Liquids Conductivity methods of gas Construction of the experimental Rig Results Comparison A literature review will give an insight into various methods of conductivity. Journals, books and other forms of resources will be used to get an understanding of current concepts of methods and recent modifications (Advantages, disadvantages and limitation). This will form the base of the construction of the experimental rig. Once the technique is selected to perform, various materials will be used to determine their conductivity and hence, the data obtained will be analysed. GANTT CHART A timeline/Gantt chart should be produced, showing the sequence and duration of the tasks over the project lifetime. A set of key milestones by which the project progress can be monitored may also be produced. Figure 1 Illustrate an Inital Gantt Chart PROGRESSION TO DATE As of 26/11/10 the project is at the beginning of the research phase. The literature review has been completed by looking into journals and online resources. The information gathered has been on advantages, disadvantages, limitation, process and setup of the conductivity measurement techniques. I have gathered and read a number of journals relating to conductivity measurements. 6.1 METHODS TO MEASURE THERMAL CONDUCTIVITY OF SOLIDS In solids, particles are packed close together by chemical bonds. As heat is transferred, the particles gains energy which results in increase in kinetic energy and particles vibrate against theneighbouring particles causing transfer of energy between the particles. Increase in temperature causes increase in thermal conductivity because of the mobility of boundless electrons. Heat energy is transferred in solids by means of lattice waves, electrical carriers and electromagnetic waves. In metals, the heat is largely transferred by electrical carriers whilst in insulators lattice waves carry large amount of heat. The change in magnitude and temperature of thermal conductivity of solids is due to the dislocations, imperfections of lattice forces and interface between lattice waves and carriers. However the change of thermal conductivity varies depending upon materials. A summary of different techniques to measure thermal conductivities is shown on next page. C-THERM TCi SYSTEM TRANSIENT PLANE SOURCE METHOD HOT-WIRE METHOD NEEDLE PROB METHOD Figure 2 Summary of Techniques to measure thermal conductivity of solids Transient Techniques Methods to measure thermal conductivity of solids Steady State Techniques Comparative Method Pipe Test Method Cut Bar Method Guarded Hot Plate Method 6.1.1 HOT-WIRE METHOD It exists in three forms which include single, crossed resistive wires and two parallel wires distant apart. It is utilized to measure thermal conductivity of refractories and takes several assumptions into account which pursue as: Isotropic Material with Uniform preliminary Temperature Figure 3 Setup of Hot-Wire method (2010, Home, [Internet], Available at: http://www.tpl.fpv.ukf.sk/engl_vers/hot_wire.htm , accessed on 8 October 2010)Hot wire an ideal, infinite thin, and long line heat supply Thermal Conductivitycan be determined by temperature vs. time response (K) due to production of heat flux (q) in the wire surrounded in the sample. Equation 2 Measurement of thermal Conductivity using Hot-Wire Method Advantages Disadvantages Precise Extensive Procedure of measuring at specified temperature Simplistic in Configuration Not utilized to measure thermal conductivity of anisotropic material Short Duration in Measurement Expertise required Table 3 Advantages and Disadvantages of Hot-wire Method 6.1.2 NEEDLE PROB METHOD It is utilized to measure thermal conductivity of materials as well as thermal diffusivity and specific heat. It has the ability for in-situ measurements and effective contact of the sample with a single tiny gap. When measuring the thermal conductivities of solids, samples are outfitted with hole machined in order to enclose probe diameter whilst measuring liquids, probes are pushed into the samples that are to be tested. This method consists of hollow tube functioning as heat supply element and temperature sensor estrange by means of medium with high thermal conductivity and electrical insulation to ensure minor difference of radial temperature within the probe. 6.1.3 TRADITIONAL TRANSIENT PLANE SOURCE METHOD (TPS) Figure 4 Apparatus of TPS (2010, Home, [Internet] Available at: http://www.ask.com/wiki/Thermal_conductivity_measurement , 10 October 2010)It is also acknowledged as Hot Disk Method and has several advantages such as accurate, comprehensiveness and ease of application. It consists of a flat sensor along with continuous double spiral of electrically conducting nickel metal etched out of thin foil and clad between two layer of kapton which provides mechanically stability and electrically insulation to the sensor. The rise in temperature is caused when current passes through nickel spiral and heat formed is dispersed by sample. Thermal conductivity is measured by recording temperature vs. time response in the sensor. In addition, modified traditional transient plane source method imparts maximum flexibility for scrutinizing thermal conductivity of liquids and powder and sustain heating element on a support. It utilizes single surface interfacial heat reflectance sensor that provides constant heat to the sample and functions temporarily. 6.1.4 TRANSIENT LINE SOURCE METHOD (C-THERM TCi SYSTEM) It is the infinite line source with constant power per unit length and identical in principle to Hot-wire method. In order to determine temperature at a certain distance the following equation was taken into consideration: Equation 3 Measurement of temperature using C-Therm TCi System where: Q = Power per unit Length E = Exponential Integral t = Time Passed since Heating 6.1.5 PIPE TEST METHOD Figure 5 Apparatus of Pipe Test Method (2010, Home, [Internet], Available at: http://www.evitherm.org/default.asp?lan=1ID=894Menu1=894 , 13 October 2010)It is identical in concept to the guarded hot plate method. It consists of a central heater which contains a cylinder placed in such a way that the heater achieves a constant temperature by means of alteration in spacing of windings in the heater in permutation with the utilization of concise split guard heaters at the ends. It can operate horizontally and vertically by situating the apparatus in a stable environment. It employs radial flow to determine thermal conductivity of minerals, plastics etc. 6.1.6 COMPARATIVE TECHNIQUE Figure 6 Apparatus of Comparative Technique (2010, Home, [Internet], Available at: http://www.evitherm.org/default.asp?lan=1ID=893Menu1=893 , 15 October 2010)A test specimen is crammed under load flanked by two reference materials; each is bounded by longitudinal guard cylinder. This results in production of temperature gradient along with the stack as well as longitudinal heat flows as consequences of temperature gradient in the guard cylinder to that in specimen stack. Therefore, the thermal conductivity is measured by recording the difference in temperature across the reference and test specimen. It has several advantages which pursue as: Versatile Simple in implementation Adaptable It is also known as the workhorse of the thermal conductivity field and can be utilized to measure homogenous and heterogeneous composite solids. 6.1.7 GUARDED HOT-PLATE METHOD Figure 7 Apparatus of Guarded Hot Plate Method (2010, Home; [Internet], Available at: http://www.azom.com/details.asp?ArticleID=2667 , 16 October 2010)The test material is positioned on a flat plate heater with electrically heated inner plate surrounded by guard heater. Its function is to maintain similar temperature at both sides of the gap extricating the main and guard heaters as a result, prevention of lateral heat flow and heat energy flows in the direction of sample. Calculated direct current is functioned to the hot plate and numerous temperatures across cold plates and heater is controlled in order to give off constant temperature at the sample surfaces. Hence, the accuracy of thermal conductivity measurements is dependent on conservation of constant temperature conditions and is measured by Fourier heat flow equation: Equation 4 Measurement of Thermal Conductivity using Guarded Hot plate method where: W = Electrical Power Input dT = Difference in temperature across the specimens d = Sample thickness 6.1.8 CUT-BAR TECHNIQUE Figure 8 Apparatus of Cut-Bar Technique (2010, Home, [Internet] Available at: http://www.anter.com/TN67.htm , 17 October 2010)It is utilized for axial thermal conductivity measurements. An unknown thermal conductivity disk sample is sandwiched between two known thermal conductivity cylinder metal brass by thermal grease and pliable metal in order to reduce interfacial thermal between the cylinders. In addition, a thermocouple situated along the three material pieces produces information on the rate of heat flow by the two known thermal conductivity. Hence, thermal conductivity is calculated using the following equation: Equation 5 Measurement of thermal Conductivity using cut-bar technique There are some other techniques to measure thermal conductivity of solids which include: Steady-State techniques Transient Techniques Four-Probe Method Laser Flash Method Guarded Heat Flow Method Angstrom Method Heat Flow Meter Method Photo thermal Method Transient Hot Strip Method Table 4 Other Techniques to measure thermal conductivity of solids 6.2 METHODS TO MEASURE THERMAL CONDUCTIVITY OF LIQUIDS Liquids particles are situated in a cubic lattice, as energy moves from a single lattice plane to the following at a speed at which sound passes through the liquid of interest. Thermal conductivity can be estimated using Bridgemans equation: Equation 6 Bridgemans Equation where: N = Avogadros Constant = (6.023 x 1023) K = (Boltzmanns Constant) = (1.3807 x 10-23 J/K) V= Molar Mass = M/à Ã‚  = Speed of sound through fluid sample A summary of different techniques to measure thermal conductivities of liquids is shown on next page. LASER FLASH METHOD HOT-WIRE METHOD DIFFRENTIAL SCANNING CALORIMTER TRANSIENT TECHNIQUES 3 OMEGA METHOD STEADY STATE TECHNIUQES RADIAL HEAT FLOW APPARATUS CALORIMETER PHOTOPYROELECTRIC DEVICE METHODS TO MEASURE THERMAL CONDUCTIVITY OF LIQUIDS Figure 9 Techniques to measure thermal conductivity of liquids 6.2.1 HOT-WIRE METHOD The apparatus consists of hot-wire cells utilizing electrically insulated hot wires dependent on an electrically conducting fluid. Wires of minute diameter are immersed within the fluid and utilized simultaneously as an electrical resistance as well as resistance thermometers, thus to enable calculation of the increase in temperature due to the resistance heating. Thermal conductivity is determined using the same process as mentioned above. Finite dimensions of the fluid can be improved, however modification to the finite dimension of wire can be reduced by utilizing minute hot-wires. 6.2.2 3-OMEGA METHOD Its features include a heating frequency (of 10 KHz), direct measurement of thermal conductivity and temperature range of -190 to 500. It comprises of alternating current and lock in amplifier to estimate thermal conductivity of the dielectric materials directly. Advantages of 3-Omega Method are being precise and fast. Thin metal situated on the specimen, an alternating current with frequency à Ã¢â‚¬ ° exceeds via strip causing heating of the material and measurement of voltage v (t) simultaneously. In addition, assumption of the heat flow along the cross plane axis of the film results in determination of the thermal conductivity using the following equation: Equation 7 Determination of thermal conductivity using 3 Omega Method where: P1 = Power b = Width of the strip =Increase in temperature oscillation of the strip 6.2.3 LASER FLASH METHOD A liquid sample is sandwiched between a minute thin metal disk and a sampler holder. Sample holder minimizes thermal contact with the sample plus suppresses stray light transmitted from the laser to the IR detector. At the time when the laser beam is taken in the front surface of the metal disk, the heat flows downward through liquid sample and temperature rises. Thus, thermal conductivity can be estimated by the disks foil temperature without measuring the thickness of the sample liquid layer and reference material. 6.2.4 DIFFERENTIAL SCANNING CALORIMETER (DSC) It is a linear heating process that has super imposed sinusoidal oscillation which yields in cyclic heating of the sample. Advantages of the method pursue as: Short Analysis time No instrument modification Figure 10 Apparatus of DSC (2010, Home, [Internet], Available at: http://pslc.ws/macrogcss/dsc.html, 1 November 2010) http://pslc.ws/macrogcss/dsc.html Small thermal gradient across the sample Experiment is performed in a non-adiabatic surrounding; numerous unknown specimens with identical length and cross sectional areas are formed. Furthermore, known specimens with their conductivity and a density supplied to the unknown specimen are formed with identical length and cross sectional to the unknown specimen. Each specimen is subjected to an equal amount of rise in heat to estimate the specific heat capacity. Therefore, the thermal conductivity obtained is: Equation 8 Measurement of thermal conductivity using DSC where: D = diameter of the specimen M = Mass of the specimen = Specific heat capacity 6.2.5 CALORIMETER A device designed to overcome the effects of convection that Prevents accurate measurement of liquids conductivities. Measures organic liquids conductivity rapidly and has several advantages which follow as: Short time measurement Accuracy Constant current passes via thermistor which functions as a heating element immersed in the liquid sample. As conductivity varies with liquid, the rate of temperature varies with liquids. Hence, thermal conductivity is inversely proportional to rate of temperature change. 6.2.6 RADIAL HEAT FLOW APPARATUS Figure 11 Apparatus of Radia Heat Flow (2010, Home, [Internet], Available at: http://www.scielo.br/scielo.php?pid=S0104-66321999000400009script=sci_arttext, 27 October 2010)A steady-state technique which offers variation of conductivity under pressure as well as absolutes values of conductivity. It is fast and requires a small pressure gradient. Liquid sample is situated between two concentric cylinders (brass and Pyrex glass construction), the axis of the inner cylinder acts as a supply of heat which flows out radially crossways the layer of fluid. Measurements of difference in temperature between inner and an outer surface of the layer of the fluid are taken to obtain thermal conductivity. 6.3 METHODS TO MEASURE THERMAL CONDUCTIVITY OF GAS Figure 12 TCD to measure thermal Conductivity of Gas (2010, Home, [Internet], Available at: http://www.scielo.br/scielo.php?script=sci_arttextpid=S0103-50532004000600009, 2 November 2010) Thermal conductivity detector (TCD) is utilized to measure thermal conductivity of gas by pulse injection. Heat is transmitted from hot to cold element by way of thermal conduction passing through the carrier gas. However, the difference in temperature between hot and cold element is maintained. Due to the thermal flow energy into the gas medium thermal gradient is generated. The power need to heat the hot element is a direct evaluation of the electrically signal output for the thermal conductivity. DISCUSSION As mentioned above, the project is currently at the beginning of the research phase. Investigation into the areas described above is vital as the information gathered will have implications on the selection of the technique for the experiment. The project objectives should be met on schedule as there are not any limitations restricting the project from completion. Whilst performing the experiment in the near future, there may be some timing conflicts as there will be other students using the same machinery in the workshop but as enough time is allocated for the task in hand there should not be any difficulty in completing the objectives. Although there may be some complications when obtaining results, however with the knowledge and experience available via the lab technicians any problem(s) shall be duly addressed. CONCLUSION In conclusion the project aims and deliverables have been identified and the required tasks needed achieve the aims and produce the deliverables have been identified and discussed. An initial Gantt chart has been drawn up to illustrate the sequences and durations of the tasks to be completed. It can be seen that the performance so far is coincident with the planned set of activities for this time period within the Gantt chart. As a result, it is expected that the project is likely to be completed on time.

Moral Absolutes Essay

Why are Christian ethics and theology inseparable? What did Francis Schaeffer mean when he said that not all things are the same to God? Christian ethics is inseparable from theology because it is grounded in the character of God. Francis Schaeffer said that not all things are the same to God and means that God exists and has a character, but not all things are the same to him. Some things conform to His character, and some are opposed to his character. 2. What did Schaeffer conclude about a society without moral absolutes? Do we see this in society? Schaeffer concludes that if a society has no moral absolutes then there is no final appeal to judge between individuals and groups whose moral judgments conflict. There will be no standards and only conflicting opinions. 3. On what authority do Christians base their belief in moral absolutes? How specific is this authority? Christians base their beliefs in moral absolutes through the Bible. Of course, you cannot solve all moral decisions by referring to the Bible but there sufficient guidelines provided to give us a sense of what is morally right. These guidelines are the Decalogue also known as the Ten Commandments and tat is how specific the authority is. 4. Ethically speaking, what are Christians called to do? Christians are called to love the Lord with all their heart, all their soul, and with all their strength and with their entire mind and love your neighbor as yourself. 5. What did Dietrich Bonhoeffer mean by the question, â€Å"Where are the responsible people? He meant Christians, who are willing to treat God’s moral order with the same respect they show His physical order; who love God with their whole body, soul, spirit, mind and strength; who treat others as they desire to be treated. Ethics 3. 2 6. Why do Muslims view Muhammad as morally exemplary even though the Hadith does not paint a flattering portrait of his life? Muslims are conditioned to look at the whole picture through the eyes of faith. Certain things that the Prophet did do not conform to ordinary ideas of morality and may be considered sensual and cruel, but believers look at the whole thing differently. To them morality derives from the Prophet’s actions; the moral is whatever he did. Morality does not determine the Prophet’s actions, but his actions determines morality. 7. How do Christianity and Islam differ in relation to their beliefs about ethical absolutes? Christianity and Islam differ because Christianity is based on the Bible and Islam is based on the Qur’an and the Bible grounds morality in God’s essential character; the Qur’an teaches that God cannot be ultimately known. 8. In what two ways is the term jihad used? First: the battle against temptation and sin for the sake of self-control and the development of virtue; Second: the battle against any and all who oppose Islam. 9. What motivates Muslims to behave ethically? They are motivated by several fronts like: to develop personal virtue and spirituality, to better the state of others, to strengthen relationships, and to anticipate the coming judgment. 10. Which motivation is strongest? The anticipation of final judgment. Ethics 3. 3 11. What is the ultimate ethical question for a Secular Humanist? What questions did Morris B. Storer outline in his book Humanist Ethics? The ultimate ethical question for a Secular Humanist is Can morality be achieved without the foundation of absolute religious beliefs? Who makes the rules, God or men? Morris B. Storer outlined: Is personal advantage the measure of right and wrong or the advantage of all affected? Is there truth in ethics? Are right and wrong expressions of heart or head? Do people have free wills? Do you measure morality by results or by principles? Do people have duties as well as rights? 12. Why are there such diverse views and conflicts regarding humanistic ethics? There are diverse views and conflicts because there is a lack of consensus about the foundation of ethics and that is problematic for the whole concept of Humanistic ethics. 13. Who proposed the â€Å"no-truth thesis† and what does it state? Kai Nelson and it states that no question of the truth or falsity of moral values can sensibly arise. 14. How do most humanists attempt to dodge the â€Å"no-truth thesis†? How does Corliss Lamont address this issue? They attempt to doge it by claiming that they use reason to determine right and wrong in the context of ethical relativism. Lamont addresses the issue with optimism stating that as long as we pursue activities that are healthy, socially useful and in accordance with reason, pleasure and happiness will accompany us and the supreme good will the eventual result. 15. What did Arthur E. Gravatt, Joseph Fletcher, Herbert W. Schneider, and Paul Kurtz have to say about Ethics? Dr. Arthur E. Gravatt: Moral behavior may differ from situation to situation. Behavior might be moral for one person and not another or moral at one time and not another. Joseph Fletcher: Rights and wrongs are determined by objective facts or circumstances, that is, by the situations in which moral agents have to decide for the most beneficial course open to choice. Herbert W. Schneider: Morality is â€Å"an experimental art† and is the â€Å"basic art of living well together. † Moral right and wrong must therefore be conceived in terms of moral standards generated in a particular society. Paul Kurtz: Moral principles should be treated as hypotheses, tested by their practical worth and judged by what they cause to happen. Ethics 3. 4 16. How did Karl Marx and Friedrich Engels view the issue of morality? Marx and Engels denied that moral ideals, moral considerations, are central in human life and social evolution. Rather, it is biological and social evolution that determines their definition of morality. What is right and wrong is determined by what is best for evolution. 17. What is the Marxist-Leninist morality of the future? How will it be determined? Their morality of the future is when the proletariat finally destroys the bourgeoisie. The new classless society will determine the new morality, just as this evolution toward a classless society is dictating today’s morality. 18. What is the Marxist-Leninist view of â€Å"old morality?They view old morality as products of the bourgeoisie invented and used by the propertied class to oppress the propertyless proletariat. 19. What is the Marxist code of ethics according to the book Scientific Communism? â€Å"Devotion to the cause of the working class, collectivism, mutual aid, comradely solidarity, hatred toward the bourgeois ie and toward traitors to the common cause, internationalism, and stoicism in struggle are traits which not only define the content of proletarian ethics, but also characterize the moral image of the typical representatives of the working class. 20. What means have Marxists historically believed would bring about a society without class distinction? What have been the results of such an ethical system? They believe that revolution is the most efficient means for creating a society without class distinctions. This system is responsible for 83 million deaths between 1917 and 1964. But from a Marxist-Leninist point of view, it is worth the price if people die to abolish social classes and private property.

Recidivism And The Criminal Justice System - 1686 Words

Currently there are 2.4 million inmates in state and federal prisons across the United States. (Cullen, 2011) Each year, more than 700,000 individuals are released from state and federal prisons. Statistics indicate that more than two-thirds of state prisoners are rearrested within three years of their release and half are reincarcerated. High rates of recidivism mean more crime, more victims and more pressure on an already overburdened criminal justice system. A topic of much discussion is what happens when the inmates are released back into society? Are they prepared for the â€Å"outside† world? Has the institution done enough to prevent recidivism? It can be said that prison based education is a means of rehabilitating and re-direction. If someone is released with only the same knowledge, skills, and abilities they entered prison with, then they are likely to become involved in the same activities as prior to being incarcerated. This action is known in the criminal justice community as recidivism. Recidivism is a tendency to relapse into a previous condition or mode of behavior. (Merriam-Webster, 2014) Recidivism is the largest concern for prison system professionals. The goal of most prisons is to rehabilitate the offender, not to punish per say. If the inmate is to return to free society, prison officials need to attempt to reduce or eliminate the possibility of committing criminal offenses upon release. Currently prisons provide various forms of education toShow MoreRelatedRecidivism in the United States Criminal Justice System Essay1203 Words   |  5 PagesRecidivism in the United States Criminal Justice System An ongoing and increasingly evident issue in the criminal justice system is how convicted individuals reenter society with little or no gradual process. These individuals often resort back to criminal activity in an act termed recidivism. 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