Media Usage Behavior Essay Example | Topics and Well Written Essays - 500 words

Media Usage Behavior - Essay Example In this scenario, the website is offering enhanced techniques of business management and corporate recognition. This business website contains a large amount of research material for others to analyze and investigate. This business website offers a variety of marketing techniques and methods for the business improvement and management through online business marketing management. In addition, this business website offers corporate support and advocacy for the business management in case of marketing business. This business website also conducts the business marketing educational programs. At this web site, we can see technical support and conferences for the business management and potential enhancement of the business management. This web site also contains an online business registration facility that helps the organization improve its working structure. Through this business registration capability we can potentially gain a better business support for the business and corporate management. The second business promotional website that I have selected is promotion marketing association (www.pmalink.org). This business website is aimed at helping the businesses to improve their working. This business website contains online newsletters those are very effective for business enhancement and corporate management. This business website is offering marketing support in form of shopper marketing, digital marketing, entertainment marketing and experimental marketing. Additionally, this business website is offering advocacy and promotional support for a variety of the business arrangements. The business website is also offering very effective management capability for improving business operations. This is aimed improving the overall corporate working and business recognition to customers. In addition, this business website encompasses a variety of resources and research publications for the businesses. In this scenario, this web

Paper on the modern prison system Essay Example | Topics and Well Written Essays - 750 words

Paper on the modern prison system - Essay Example Contemporary research has shown a very high rate of changes in the prison system and it is well to inquire whether this is a consequence of various factors or it is just a mere coincidence. Going through the various factors in the contemporary prison system assists in understanding the changes that have taken place in the system over time and this is best done by using reports from Virginia that has a high number of prisons. The prison system that the country uses today and in the 20th century is the same. In the 20th century, the prisons experienced major reforms in terms of the structure and the staffing. However, one major aspect that the system did not accommodate was the technological characteristic (Wilson). Technology in major institutions is one very important characteristic as in the 21st century; most of the education relayed to students is through technology. For example, calculators have come in as a great deal to serve the contemporary students with faster ways of calculating in fields such as chemistry, physics and mathematics. The fact that there has not been any introduction of the new technology devices in the prison system is a factor showing that it is not a coincidence that there is a lack of literacy in the prison system. Where there are these gadgets in the prison system, many inmates would develop professional knowledge that would assist them in the advancements of a career. Upon release from the system, they would get proper jobs that would help them shun all criminal activities thus making the environment a safer place. Lack of the gadgets in the prisons encourages the prisoners to engage in or form illegal groups in prisons The contemporary days, the economic condition in the outside world is one other factor linked to the high amount of crime in the prisons as compared to older times. In the contemporary times, the rates of recession have been steadily on the rise and thus making people engage in activities that

Fuel Metering System In Si Engines

Fuel Metering System In Si Engines Carburetor: is a device which is used in automobiles, with spark ignition engines, for the purpose of fuel metering, i.e. to mix the appropriate amount of fuel with the incoming air which is to be supplied to the engine cylinders. The basic principle upon which the carburetor works is flow of air through the venturi. The fuel enters the carburetor through the air filter, which filters the air to remove any dust particles in the air; passing through the choke valve it enters the venturi (a converging-diverging nozzle), where due to decrease in cross-sectional area, the velocity of the air increases, decreasing the pressure in that area. A decrease in the pressure results in fuel flowing out of the float chamber and mixing with the air, hence forming an air-fuel mixture. Figure . Cross-sectional view of a basic carburetor Basic Requirements: In a spark ignition engine the torque and power output of the engine is controlled by controlling the amount of air-fuel mixture that enters the engine cylinder; and this is done by incorporating a butterfly valve (throttle valve) in the carburetor. In order to achieve complete combustion inside the engine cylinder and avoid the wastage of fuel into the exhaust, a stoichiometric mixture is required; which is a mixture that contains precise proportions of fuel and air required for the complete combustion of both the fuel and the air, which is equally important. In gasoline engines, this ratio is around 15:1. Even if this ratio is achieved, practically the mixture is still not combusted completely owing to the extremely short time available to the air-fuel mixture for combustion. The air-fuel mixture is unable to form a completely homogenous mixture resulting in exhaust gases containing traces of oxygen, carbon monoxide and some unburned and partially burnt fuel. The range of air-fuel ratio for ignitable mixture varies from 18:1 to around 7:1. The basic purpose of using a carburetor is to: Measure the airflow of the engine Deliver the correct amount of fuel to keep the air-fuel mixture in the proper range Mix the air and fuel finely and evenly The proper air-fuel mixture is required to be delivered to the engine cylinder at the various commonly faced conditions during the vehicle operation, namely: Cold start Hot start Idling or slow-running Acceleration High speed/high power at full throttle Cruising at part throttle The deficiencies of the elementary/early carburetor: At low loads the mixture becomes leaner; the engine requires the mixture to be enriched at low loads. At intermediate loads, the mixture equivalence ratio increases slightly as the air flow increases. The engine requires an almost constant equivalence ratio. As the air flow approaches the maximum wide-open throttle value, the equivalence ratio remains essentially constant. However, the mixture equivalence ratio should increase to 1.1 or greater to provide maximum engine power. The elementary carburetor cannot compensate for transient phenomena in the intake manifold. Nor can it enrich the mixture during engine starting and warm-up. The elementary carburetor cannot adjust to changes in ambient air density (due primarily to changes in altitude). Modern Carburetor Design: The changes required in the elementary carburetor for better and more efficient performance are: The main metering system must be compensated to provide essentially constant lean or stoichiometric mixtures over the 20 to 80 percent air flow range. An idle system must be added to meter the fuel flow at idle and light loads. An enrichment system must be added so the engine can provide its maximum power as wide-open throttle is approached. An accelerator pump which injects additional fuel when the throttle is opened rapidly is required to maintain constant the equivalence ratio delivered to the engine cylinder. A choke must be added to enrich the mixture during engine starting and warm-up to ensure a combustible mixture within each cylinder at the time of ignition. Altitude compensation is required to adjust the fuel flow to changes in air density. It is also necessary to increase the magnitude of the pressure drop available for controlling the fuel flow. Figure . Modern Carburetor design Basic Working and different parts of the Carburetor: Figure . Simple Carburetor with additional basic features 1) Float 2) Float needle 3) Float chamber 4) Main jet 5) Air tunnel(venture) 6) Throttle plate ( a. no-load operation) b. partial load; c. full load) 7) Air correction nozzle 8) Mixing tube 9) Mixing tube holes 10) Enrichment pipe 11) Jet (calibrated drilling) 12) No-load operation fuel nozzle 13) Idle run air duct 14) Idle mixture adjustment screw 15) Bypass drilling 16) Accelerator pump 17) Choke (for cold start) 18) Ventilation A carburetor basically consists of an open pipe, a throat/barrel through which the air passes into the inlet manifold of the engine. The pipe is in the form of a venturi; it narrows in section and then widens again, causing the airflow to increase in speed in the narrowest part. Below the venturi is a butterfly valve called the throttle valve (a rotating disc that can be turned end-on to the airflow), so as to hardly restrict the flow at all, or can be rotated so that it almost completely blocks the flow of air. This valve controls the flow of air through the carburetor throat and thus the quantity of air/fuel mixture the system will deliver, thereby regulating engine power and speed. The throttle is connected, usually through a cable or a mechanical linkage of rods and joints or rarely by pneumatic link to the accelerator pedal on a car or the equivalent control on other vehicles or equipment. Fuel is introduced into the air stream through small holes at the narrowest part of the venturi and at other places where pressure will be lowered when not running on full throttle. Fuel flow is adjusted by means of precisely-calibrated orifices, referred to as jets. Idle circuit: As the throttle plate is opened slightly from the fully closed position, the additional fuel delivery passages are uncovered behind the throttle plate. The low pressure area is created due to the throttle plate blocking the air flow; this allows more fuel to flow as well as compensating for the reduced vacuum that occurs when the throttle is opened. This smoothens the fuel flow through the jets when moving from closed throttle position to the open throttle circuit. This circuit plays its role when the engine is running on no load condition or is known as idling. The air enters from the idle run air duct, certain amount of fuel is mixed with this air depending on the no-load operation fuel nozzle and then goes into the intake manifold through the idle mixture screw path. This idle mixture screw is adjusted to regulate the amount of air-fuel mixture when idling. Main open-throttle circuit: When the throttle is opened, the vacuum inside the manifold decreases due to decreased restriction in the airflow. This reduces the flow through the idle and off-idle circuits. The airflow through the throat increases, and in accordance with the Bernoullis principle the pressure drops in the throat and the fuel flow through the jet, which is placed in the centre of the venturi, increases. Similarly, when the throttle is closed, the airflow through the venturi drops till the point when the lowered pressure is insufficient to maintain the fuel flow, and the idle circuit takes over. At times booster venturis are used to enhance the fuel flow out of the jet and into the air stream. Accelerator Pump: The inertia of the liquid gasoline is more than that of the air, which shows that when the throttle is opened suddenly during sudden acceleration, the amount of air that will flow would be far greater than the amount of fuel flow resulting in a temporary lean mixture, causing the engine to stumble under acceleration. This is not a desirable effect. In order to eliminate this unwanted effect, a small mechanical pump usually of diaphragm type is employed. It propels a small amount of gasoline through a jet, from where it is injected into the carburetor throat. This extra shot of fuel counteracts the transient lean condition during sudden acceleration. The accelerator pump is also used to prime the engine with fuel prior to a cold start. Excessive priming, like an improperly-adjusted choke, can cause flooding. This is when too much fuel and not enough air are present to support combustion. For this reason, some carburetors are equipped with an unloader mechanism: The accelerator is held at wide open throttle while the engine is cranked, the unloader holds the choke open and admits extra air, and eventually the excess fuel is cleared out and the engine starts. Choke: when the engine is cold, the fuel does not vaporize properly, instead it condenses on the walls of the intake manifold, and hence very little fuel is delivered to the cylinders. This makes it difficult for the engine to start. This calls for the need of a richer mixture to start and run the engine until it warms up, as the richer mixture is easier to ignite. Figure . Cross-sectional view of a choke To provide the extra fuel, a choke is typically used. It is a device that restricts the flow of air at the entrance to the carburetor, before the venturi. With this restriction in place, extra vacuum is developed in the carburetor barrel, which pulls extra fuel through the main metering system to supplement the fuel being pulled from the idle circuit. This provides the rich mixture required to sustain operation at low engine temperatures. Even in this era of advanced technology, cars like Suzuki Mehran still employ a choke which is connected to a pull-knob on the dashboard operated by the driver. In some carbureted cars it is automatically controlled by a thermostat employing a bimetallic spring, which is exposed to engine heat, or to an electric heating element. This heat may be transferred to the choke thermostat via simple convection, via engine coolant, or via air heated by the exhaust. More recent designs use the engine heat only indirectly: A sensor detects engine heat and varies electrical current to a small heating element, which acts upon the bimetallic spring to control its tension, thereby controlling the choke. A choke unloader is a linkage arrangement that forces the choke open against its spring when the vehicles accelerator is moved to the end of its travel. This provision allows a flooded engine to be cleared out so that it will start. Some carburetors do not have a choke but instead use a mixture enrichment circuit, or enrichener. Typically used on small engines, notably motorcycles, enricheners work by opening a secondary fuel circuit below the throttle valves. This circuit works exactly like the idle circuit, and when engaged it simply supplies extra fuel when the throttle is closed. Float chamber: To ensure a ready mixture, the carburetor has a float chamber or bowl that contains a quantity of fuel at near-atmospheric pressure, ready for use. This reservoir is constantly replenished with fuel supplied by a fuel pump. Float: The correct fuel level in the bowl is maintained by means of a float controlling an inlet valve. The fuel arriving from the tank is held inside a constant level float chamber. The liquid pressure head on the various jets is relatively constant. The float chamber level is kept constant by means of a fuel inlet valve, actuated by a float that follows free surface of the liquid in the float chamber. As fuel is used up, the float drops, opening the inlet valve and admitting fuel. As the fuel level rises, the float rises and closes the inlet valve. By having a high float level, a greater fuel quantity is delivered compared to the case with a low float level, under all operating conditions and for all of the carburetors circuits. Vent Tubes: Usually, special vent tubes allow air to escape from the chamber as it fills or enter as it empties, maintaining atmospheric pressure within the float chamber; these usually extend into the carburetor throat. Placement of these vent tubes can be somewhat critical to prevent fuel from sloshing out of them into the carburetor, and sometimes they are modified with longer tubing. Notch Pin: With this type of carburetor, the maximum depression zone is beneath the throttle valve (slide) which is raised and lowered by the throttle cable, controlling the speed of the engine. As shown in the drawing, the bottom of the slide features a tapered needle which fits into the fuel pick-up tube (needle jet) to meter the fuel delivery of the tube from about 1/4 throttle to 3/4 throttle. From 3/4 throttle to full throttle, the needle will not affect the fuel flow. At this point, fuel flow is metered by the main jet (position at the bottom of the tube). The setting of the notch determines the amount of fuel being allowed to mix with the incoming air; notch 1 providing a lean mixture and richer mixture as we proceed to notch 4. Figure 11. Notch Pin Types of Carburetors: Carburetors can be classified into three types: Float Feed Suction Feed/Diaphragm Constant Vacuum/Constant Depression/Zenith-Stromberg The difference between these is the way the fuel is supplied to the Air Stream. Float Feed: Float feed carburetors are so named because they maintain a fuel staging area at approximately ambient pressure with a float valve. Fuel level is maintained to tight tolerances because fuel metering is a function of float level. Higher levels make it richer. Figure 12. Operation of needle valve As the fuel is drawn for the bowl area the float drops, opening the float valve. Then the fuel pump pressure causes the bowl to refill, floating the valve closed. Under normal operations the float valve remains slightly open to very open, keeping the level constant. Floats can be concentric or eccentric. Concentric are levers, first or second class, whereas eccentrics are a slide float. Floats can be adjusted by shims under the valve or by adjusting a valve contact tab. Floats need to be carefully inspected for leaks and possible deterioration. The main source of fuel metering force comes from the pressure differential between the low pressure area within the venture and the ambient pressure in the float chamber, or bowl. This is called air metering force. Figure 13. Air-metring force being applied Idle circuits will exist that feed fuel through separate ports. These are located just downstream of the throttle plate; there may also be transition ports to assist throttle transition from idle to midrange. Idle and transition ports will only be active when throttle plate is closed or transitioning (they function only when the throttle plate is causing high velocity air or flow close to the port and once the throttle plate opens enough, the port stops delivering fuel flow); these ports usually form a completely separate fuel circuit from the main fuel metering. They may also have air bleed systems. Figure 14. Demonstration of relation between Idle circuit and main throat operation Most of these carburetors are up draft or side draft, and the systems are identical with the position of the fuel discharge venturis and idle circuits upstream of the throttle valve, regardless of the airflow direction. Figure 15. An up-draft carburetor Disadvantages: The three major disadvantages of float carburetors are: Various flight attitudes may cause the float system to malfunction. Carburetor icing is most prevalent with this type. Fuel metering and throttle transition is less accurate. Suction Feed: Suction Feed Carburetor is very similar to the float type. The one exception is there is no float to meter and control the level of fuel in the fuel chamber. The difference in pressure between the tank and the carburetor throat lifts the fuel up the fuel pipe past the main needle valve and through the discharge holes. Figure 16. Suction Feed Carburetor Figure 17. Cold Start Figure 18. Idling Constant Vacuum: The constant vacuum carburetor has a rubber diaphragm exposed to the cylinder intake stroke vacuum on one side and to atmospheric pressure on the other. The diaphragm moves against the inlet needle (cylindrical slide valve) allowing it to move from its seat. A spring returns the needle (cylindrical slide valve) to its seat when the vacuum stops. Figure . A typical Constant Vacuum type carburetor A few advantages of Carburetors: Carburetors are much easier to adjust/less technical skills required Cheaper to repair rebuild Less special equipment required. Problems with Carburetors: Have mechanical parts due to wear and tear needs periodic adjustments and maintenance. Flexibility limitations. Intake manifold length problems in the case of multi cylinder engines Carburetors arent very efficient as they cant make changes on the fly like fuel injection can. Conclusions: Keeping in mind the advantages and disadvantages of carburetor, regardless of the constant n continuous effort to improve the basic design into the most efficient one, the carburetors have finally been replaced by the latest technology referred to as fuel injectors. These fuel injectors are of various types, GDI being a personal favourite and the best technology available in the market. The fuel injectors efficiently meter the appropriate amount of fuel hence reducing the exhaust emissions, fuel wastage, the harmful pollutants and giving the best fuel economy possible.

The American Dream in Death of a Salesman by Arthur Miller, and The Gre

The American Dream in Death of a Salesman by Arthur Miller, and The Great Gatsby by F. Scott Fitzgerald In a majority of literature written in the 20th century, the theme of the ' American Dream" has been a prevalent theme. This dream affects the plot and characters of many novels, and in some books, the intent of the author is to illustrate the reality of the American Dream. However, there is no one definition of the American Dream. Is it the right to pursue your hearts wish, to have freedom to do whatever makes one happy? Or is it the materialistic dream prevalent in the 50's, and portrayed in such movies as Little Shop of Horrors? Or is the American Dream a thought so intangible, it changes in the heart of every person and can never be truly defined? Or is it an 'American' Dream at all, is it simply a human drive to pursue a better life? In the book, The Great Gatsby, by F. Scott Fitzgerald, and the play Death of a Salesman by Arthur Miller, the writers portray two completely different literary works which have an amazing connection. Both works are written to illustrate two viewpoints on the American Dream; either the pursuit of happiness, or the pursuit of material wealth. In both literary works, the authors show a comparison between these two visions of the American Dream, and in the end, the authors message is the same; the American dream cannot be a materialistic goal. Or, should not. For many Americans, the American Dream is a 2-door garage in a suburb, but as illustrated in the literary works, this sort of an American Dream leads to unhappiness, depression, and in the case of Willy Loman, suicide. In The Great Gatsby, it is Daisy who has a materialistic dream. She loved Gatsby. When he was a soldier, she loved him, but Gatsby knew he could never marry her, because of class. So, Daisy married Tom Buchanan, a wealthy man, a good looking man, but Daisy did not love him. In the book, Daisy is miserable. She knows Tom is having an affair, and she often cries. She wishes for her daughter to be " a beautiful little fool"( Gatsby 21) so that her daughter will not be smart enough to be unhappy. Daisy loves Gatsby, but she loves her lifestyle. And when she had the decision between the two, she chose her lifestyle, and she will regret her decision time and again. The concept of the American... ...attered, enough so that he could see who his father truly was. Biff had to reevaluate his life, and he came to a realization; " To devote your life to keeping stock, or making phone calls, or selling or buying. To suffer fifty weeks a year for the sake of a two week vacation, when all you want is to be outdoors"( Death 139). Biff came to the conclusion that humans were not meant to work in pursuit of this economic goal, but were meant to work outside. His father could never accept that, and if Willy had, the story would have had a much different ending. The American Dream has no singular definition, but a multitude of interpretations. Yet, in these two completely different literary works, the authors share the same message; the American Dream should not be a materialistic goal, but a goal in pursuit of true, spiritual happiness. This is shown in both Death of a Salesman by Arthur Miller, and The Great Gatsby by F. Scott Fitzgerald. Both authors feel very strongly about the issue, as do many other authors writing today, who fear American Economic views could doom the human race to a meaningless existence. With an ending not too dissimilar from Brave New World.

Respiratory Infections In Developing Countries Health And Social Care Essay

Respiratory infections are prevailing worldwide and are straight responsible for morbidity and a important proportion of mortality, particularly in kids. The most common respiratory conditions include acute respiratory piece of land infections, asthma, pneumonia and bronchitis. Acute respiratory infections ( ARIs ) continue to be the taking cause of acute unwellnesss globally and remain the most of import cause of baby and immature kids mortality and morbidity, which accounts for about two million deceases every twelvemonth and ranks as the first cause of disability-adjusted life-years ( DALYs ) lost in developing states. The populations who are at maximal hazard for developing a fatal respiratory disease are the really immature, the aged, and the immunocompromised. Upper respiratory infections are really frequent but are seldom dangerous. Lower respiratory infections are responsible for more terrible unwellnesss like grippe, pneumonia bronchiolitis, asthma and bronchitis which are t he taking subscribers to acute respiratory infections mortality ( WHO Acute respiratory infections update, 2009 ) . Acute respiratory infections continue to remain among the chief causes of child mortality globally. Even in the general population, they are the taking cause of acute morbidities. Hospital records from high mortality provinces of India show that up to 13 % of inpatient paediatric deceases are due to ARI. Harmonizing to recent WHO/UNICEF study, approximately 20 % of deceases in kids under five old ages of age are due to acute lower respiratory tract infections like bronchitis, bronchiolitis and pneumonia. ( Vashishth.V, 2010 ) . Respiratory diseases histories for a significant proportion of mortality all over India with the upper limit reported in the Central States and the lower limit reported in the North Eastern part of the state. Respiratory infections histories for the 2nd largest ( 22 % ) cause of deceases among kids aged below five old ages. ( Ministry of Health and Family Welfare, 2003 ) . Most of the disease load in rural India is due to the respiratory diseases like asthma, bronchitis, TB ( TB ) and pneumonia. In low income scenes these diseases are chiefly attributed with exposure to indoor pollution, solid-cooking fuels, hapless lodging, low nutritionary position and hapless healthful conditions 1. The association of respiratory upsets with geographical part may be important with population denseness, industrial and fabric pollutants, and baccy ingestion. ( Ramanakumar, 2005 ) . Wheezing is one of the commonest symptoms of respiratory diseases in kids. Epidemiologic surveies conducted worldwide have shown that 10 to 15 per centum of babies start to wheeze during their first twelvemonth of life, and around 25 per centum of kids less than five old ages of age nowadays to their clinicians with wheezing. ( Fakhouri, 2007 ) . Nebulized medicines are an built-in portion of direction of many respiratory diseases. Nebulizing a drug is a extremely effectual method of presenting drugs straight into the lungs in the signifier of aerosol atoms, provided with the right equipment and gas flow is used with the appropriate drug. This method of medicine disposal has an added benefit that it has minimum side effects compared with other manners of intervention. Nurses play an of import function in the disposal of medicine via a atomizer in any wellness attention puting. 1.1 Need for the survey: Respiratory attention patterns are altering, and pull offing respiratory diseases in kids is a existent challenge to the medical fraternity. Many clinical surveies have shown that O bringing and nebulization of bronchodilators via a gas driven jet atomizers play a cardinal function in the intervention of wheezing. Children differ from grownups in more than merely their size ; they have, for illustration, different external respiration form, respiratory rate, tidal volume and air passage construction. Nebulization is one of the easiest and most efficient ways to administrate respiratory medicines in kids. Beta agonist remains the most commonly prescribed medicine for wheezing in kids by respiratory baby doctors and general baby doctors likewise since they are proved to be the most effectual drug in the intervention of airway obstructor in kids. Despite the fact that nebulization of drug is an of import portion of intervention in assorted respiratory diseases, small attending has been paid to the efficiency of O therapy during nebulizations. The restraints in the handiness of high flow O cylinders and high cost of equipment bound the everyday usage of this technique in most primary wellness attention puting in developing states. 1.2 Statement of the Problem: A COMPARITIVE STUDY TO ASSESS THE EFFECTIVENESS OF NEBULIZATION WITH AND WITHOUT OXYGEN IN IMPROVING THE RESPIRATORY STATUS OF CHILDREN WITH WHEEZING IN A SELECTED HOSPITAL, COIMBATORE: Symptoms of respiratory diseases like wheezing affect the normal pneumonic map and impair the wellness of the kids. The purpose of the survey is to better the pneumonic map through nebulization with O. The cardinal intent defines the quality of wellness desired to consequence or sustain in patients and specifies particular duty in caring for patients. The cardinal intent of this survey was the betterment in respiratory position by nebulization with and without O. The 2nd construct is prescription for the fulfilment of cardinal intent. The prescription is directing to a directing activity that will most likely to take to fulfillment of cardinal intent. A prescription indicates the wide general action which is appropriate to the execution of the action. In this survey nebulization with and without O was used for kids with wheezing and 25 kids were assigned to each therapy. The therapies were given for 15-20 proceedingss with on-going appraisal of respiratory parametric quantities like respiratory rate, wheeze mark, O impregnation, abjurations and dyspnea class. The 3rd construct is worlds which include five constituents aa‚ ¬ † the agent, the receiver, the end, the agencies and the model. The agent is the practising nurse and is characterized by personal properties capacities, capablenesss and committedness and here research worker is considered as the agent. The receiver, the patient is characterized by personal properties and jobs and here the kids have jobs like wheezing, tachypnoea, abjurations and dyspnea. The end is the coveted result to accomplish. Reduction in respiratory ailments was considered as the end of this survey. The average comprise the activities and devices through which the practician is enabled to achieve the end. The scene of the survey was paediatric OPD of GKNM Hospital, Coimbatore which is a 530 bedded superspeciality infirmary. Oxygen and compressed air were used to ease the therapies and the technique of usage of devices was explained to parents and kids before disposal of therapies. The therapies were given for 15-20 proceedingss. The model consists of homo, environmental, professional and organisational installations and infirmary was considered as model.

Human and New Surgical Tools

Countless inventions have improved the quality of human life and made previously inconceivable notions possible. In some cases (such as the washing machine), they reduce the drudgery of day-to-day tasks. In others (such as the motion picture), they allow people to engage in new forms of artistic expression. Many inventions actually save human lives, such as new surgical tools and medical vaccines.With the science scientist invented the computer now everywhere we need and we are using computers, computers become a friendly in our nature that we can do anything from echnologies so I want to conclude that science is a boon not a bane if we use in a proper way. Science has invented marvellous machines and discovered energies that run these machines to take the drudgery out of man's work. By doing much of his work and doing it fast, machines have provided man with a lot of leisure. The rosy dream of an easy and luxurious life has come true for him. Distance has been conquered.Modern means of transport and communication have made the Modern means of transport and communication has made the world a global village. Men nd things and news and views can go around the globe today with lightening speed. Internet has brought people of the world together and brought about a revolution in the fields of information and communication. Man has already landed on the moon and man- made satellites have made voyages through the solar system. Our life has become healthier and longer. Modern hygiene, sanitation, medicine and surgery are conquering more and more physical and mental illness with each passing day.We now know and experience the Joys of good health and longevity. Through the inema, the radio, the tape recorder, the TV and the video, science has worked wonders in the fields of education and entertainment. Though we welcome these blessings of science, we have to consider the other side of the picture also. Man has not been able to face the problems created by the inventions of science and to stop the misuse or harmful consequences of scientific inventions. Factories have polluted the water and the atmosphere. They have caused noise pollution.Industrialization has led to slums in which human beings live a degraded life in the midst of filth and qualor. We have allowed science to master us instead of keeping it our servant. Medical inventions have, led to the pollution explosion and the consequent miseries. Again, science has put in our hands terrible weapons such as the nuclear bombs, the guided missiles and the means of chemicals and biological warfare. We are in danger of destroying ourselves with these monstrous means that ironically are our own creations. Rightly used science can bring heaven on earth. Wrongly used, it can turn this earth into hell.