Saturday, November 23, 2019

Air Definition in Science

Air Definition in Science The term air refers to gas, but exactly which gas depends on the context in which the term is used. Learn about the modern definition of air in scientific disciplines and the earlier definition of the term. Modern Air Definition Air is the general name for the mixture of gases that makes up the Earths atmosphere. On the Earth, this gas is primarily nitrogen (78 percent), with oxygen (21 percent), water vapor (variable), argon (0.9 percent), carbon dioxide (0.04 percent), and many trace gases. Pure air has no discernible scent and no color. Air typically contains dust, pollen, and spores. Other contaminants are referred to as air pollution. On another planet (e.g., Mars), the air would have a different composition. There is no air in space. Older Air Definition Air is also an early chemical term for a type of gas. Many individual airs made up the air we breathe. Vital air was later determined to be oxygen, phlogisticated air became nitrogen. An alchemist might refer to any gas released by a chemical reaction as its air.

Thursday, November 21, 2019

Green IT Strategies and Applications Essay Example | Topics and Well Written Essays - 1000 words

Green IT Strategies and Applications - Essay Example There is a need to develop consensus and awareness among the corporations and hierarchy alike as to how implementing green based IT approach will benefit them both (Unhelkar, 2011). Is it an indirect condemnation of capitalism and promotion of capitalism? Without insight, this statement of the author can be easily taken out of context and preached as pro communist but in reality this is not the case here. The author simply means that in blind pursuit of profits for the company several important things like green IT measures are forgotten along the way which can benefit both the society and the corporation but is not seen by these public private entities because of blind following of profiteering and lack of vision. The political set up has nothing to do with it except implementing it and making legislations regarding it that will enable the green IT revolution to flourish. Other than that is strictly irrelevant to the cause. West and East Germany, People’s Republic of China an d Soviet Union as communist states were supposed to give equality and life of equal living to its citizens but in the environmental they had failed miserably (In case of China, it is still failing to address this issue). This went wrong not because they were communists. It went wrong because they failed to identify and correct the long term problems that come associated with industrialization like lower emissions and less nitrogenous content in the atmosphere. Why isn’t anyone implementing these Green IT procedures when they are proved to be more profitable? In the race for getting more profits, markets and control, the companies fail to address the longevity of the issues facing the world like pollution, perceived shortage of power and the recent issue of IT junk. The lack of implementation in this regard will also hurt the very environment which the corporations rely on to buy their products and services. The green IT ways are more efficient both monetarily and function wis e and it’s a dire need to create awareness about them at all levels of corporate and governmental enterprises. The implementation of these practices will not only result in increased profits and versatility (e.g. cloud hosting) to these organizations but it will also set a healthy trend in the market encouraging more and more to go green. As the new lean concept that was previously strictly the domain of Japanese Auto manufacturers making its way to companies around the world, the reduction of waste and careful monetary inspection of each process getting more and more importance, these efficient green IT products and upgrades are soon hopeful of making entry to the corporate fold (Jones, 2012). Is change in attitude towards green IT really positive or could it be coercion to transfer to new ways? The author clearly states that there are financial benefits to be reaped if an organization shifts to green IT applications, hardware and waste management so if there are monetary an d environmental benefits available at the same time one should really go for it and there should be no coercion involved. The author has over emphasized some points like the environmental benefits and the corporations lacking vision but if you see it the other way, we can feel that if lower

Tuesday, November 19, 2019

Do cell phones cause cancer Review the science about the potential Essay

Do cell phones cause cancer Review the science about the potential hazard to human health - Essay Example hildren and adults, and the actuality that these phones emit radio- frequency waves, researchers and health specialists have raised concern about the safety of cellular phone utilization. With regard to cancer, the focus is on whether the users of cell phones are more prone to the risk of brain tumors and other tumors in the neck and head area. The radio frequency waves from cell phone are given off through the antenna. The nearer the cell phone is held to the head, the closer the antenna and a greater exposure to radio frequency energy of the person using the cell phone. A number of factors affect the quantity of radio frequency waves absorbed by the brain, including: total time the person spends on phone, as different phones emit different amount of waves therefore the model of phone being used, how close the phone is held to the head, and the amount of cell phones a specific area at the time. Public health specialists and researchers throughout the world are busy in vigorous discussions concerning whether radiation from the cell phones lead to brain cancer or not. The early studies of short term cell phone use did not find any evidence for augmented risk of brain cancer, but the studies conducted for long-term cell phone utilization, have instituted a greater risk of developing two types of brain cancers on the ipsilateral side, that is, the side of brain on which the mobile phone is mostly held. The two types of cancers are: A multinational case-control study was developed by the International Agency for Research on Cancer (IARC), in the late 1990s. It was named â€Å"INTERPHONE† and its purpose was to attend to rising public concerns about the safety of cell phones which were becoming very strong. The objective of the INTERPHONE case study was to look into and determine whether the radio frequency radiations which are emitted by the cell phones are carcinogenic. Thirteen countries were participants of this project and the study took place from year 2000 to

Sunday, November 17, 2019

Teaching children Essay Example for Free

Teaching children Essay While it is necessary to monitor the programs that children are viewing on television, it is also important to understand that children do not have the concept of what is real and unreal at an early age. Teaching children to become media skeptics is expecting them to think and rationalize like adults. In the essay, Remote Control: How to Raise a Media Skeptic, Susan Douglas narrates how she tells her young daughter to become a more discriminating television viewer. The author is not against children watching television as evident in her statement, â€Å"I am not one of those virtuous, haloed parents who has banished the box from the home. She points out that growing up with TV provides her daughter with a form of cultural literacy that is important for the child’s growing years. She only wants her daughter to understand about what is on television and why it is there. It is an act of showing the child that whatever she sees on commercials is not what it is in reality. She believes that talking to children about what they see on television and what is unreal is important in raising them to become media skeptic. It is similar to giving them the skills and the tools to know that not everything is true on television because advertisements are there to attract us to buy products that are not as good as they are presented on TV. By nature, children are attracted to toys that are colorful, with moving parts and attractive sounds and media knows how to attract the very young consumers. Children prefer anything that stimulates their senses. They do not have the capability to understand about safety, durability, and cost. They are just kids who want to play with their toys. When they are in the toy section, they will pick toys that are seen on cartoons shows or TV commercials. When I was a child, I never had parents like Susan Douglas. My parents never pointed out what is good on television or what is real and unreal with what we see on the commercials. As we grow up, we have our own ability to know whether we are being fooled by the advertisements or whether they are telling us the truth. I believe that as long as we are studying, talking with people and we are exposed to all forms of media, the knowledge of determining what is real and not real will come naturally even without the intervention of the adults. Being a media critic, the writer Susan Douglas is sensitive to whatever she views on television. There is also a strong tendency for her to push her opinions on others and influence them on what she believes is real and what is not real. She monitors her daughter well and fears the effect of media on her child. Although there are positive and negative effects of television on the young viewers, I also believe that we should keep tract on what the children are viewing. However, I do not agree that children should be trained to become media skeptics at a young age. Adults should allow their children to be children. Pointing out everything that is right or wrong on television will affect the imaginary minds of the children. It will also spoil the fun of making children enjoy the toys that are in the market. We should not hasten the growth of the child and make them think like adults. I do not agree with the statement that â€Å"one of the best words to use when you’re watching TV with your kids is stupid. † Adults do not have the same imagination as children. What is stupid for adults may be fun for the kids. In time, children will know that ladies do not have perfect figures like the Barbie dolls and that both males and females do household chores and change babies’ diapers. Susan Douglas’ method may be effective because children trust the opinions of their parents and regard them as an authority figure. However, since most of us were not taught by our parents to be media skeptics, I believe that her techniques will not be fully acceptable to all parents.

Thursday, November 14, 2019

Essays --

Como ya se sabe la vida de un ser humano depende mucho en lo que la salud le brinde en su vida diaria. Para muchos de los seres humanos en el mundo, el no cuidarse les provoca enfermedades, las cuales producen que el ser sea parte de una vida la cual no sea protegida y sin ayuda mà ©dica. Con eso la exposicià ³n a la vida que se vive afuera expone al ser humano a situaciones severas y a veces causa una ayuda mà ¡s para ellos. En Mà ©xico como se sabe, el derecho a la salud es de una de las tantas principales bases para que el ser humano viva en el lugar correcto con una buena salud y con el bienestar que es necesario en su vida. La salud es el motor principal para que el humano sepa por donde su vida se pone en riesgo y por donde se puede pasar sin ningà ºn problema. Tambià ©n el ser humano es el cuerpo que en la ciencia forma parte por lo que la salud existe y mà ¡s teniendo a la piel expuesta a las bacterias y otras cosas que puedan afectar a la vida diaria de cada ser. Por el momento en Mà ©xico la salud es parte de la vida y pues con el derecho puesto en cada ser humano el producto resulta una ayuda mà ¡s para la poblacià ³n que la necesita. Con la promocià ³n del derecho de la salud en Mà ©xico se a puesto a prueba el uso de este para que los individuos se den cuenta la importancia y la necesidad que es tenerla. Teniendo el punto de vista de otro paà ­s, India, me a puesto otra perspectiva con la el significado que se toma en Mà ©xico de la salud. El contraste es masivo y pues la vida se puede poner en riesgo en los dos paà ­ses pero la salud se ve de otro modos en cada uno de estos paà ­ses. La India se mete en un lugar en donde las situaciones de su salud son normalmente provocadas por la escasez de higiene que existe en el paà ­s. Con esto se està ¡n provoca... ...mo el Programa Nacional de Salud, poniendo nuevos objetivos. Primero se querà ­a poner mas refuerzos interinstitucionales para el desarrollo de programas conjuntos e incrementar la cobertura y poner la oportunidad de los servicios de la salud mas gente de la poblacià ³n. Con todo esto, el gobierno mexicano esperaba elevar el à ­ndice de vida, reducir las tasas de mortalidad en todos sus tipos y mejorar la salud del paà ­s poniendo a la infraestructura primero que nada. Todo el tiempo se siguià ³ este esfuerzo y pues el sexenio que siguià ³ de Ernesto Zedillo, fue parte de esto tambià ©n. Durante el siglo XX, los gobiernos presentes en estas dos ultimas dà ©cadas el de De la Madrid, Salinas de Gortari y Ernesto Zedillo, trataron de meter unas series de medidas y programas para poder fortalecer y modificar el tema de la salud en el paà ­s y para poder ofrecerle mayores oportunidades

Tuesday, November 12, 2019

Media and Children

Today I came here to discuss the topic media and children In this topic I will I tell you what is the influence of media on our childrens But First of all I will explain to you what is media? Media: Communication channels  through which  news,  entertainment,  education,  data, or  promotional messages  are disseminated. In my opinion Our media has negative impact on our children’s . because When children see scenes of violence, natural disasters, and crime reports on TV Which leads to stress, and fear among children leaving far reaching impacts on their personality.Now I will tell you some points with examples Blind Imitation: you have often seen that young girls and boys imitate celebrities blindly do you give a thought to whether they are doing right or wrong?. in such that the impact of media is wrong Wrong Message: in our society negatives are highlighted with the purpose of awakening people about them. For example, the negative effects of addiction are port rayed through advertisements. Newspapers, television and the Internet are used to convey social messages.But unfortunately sometimes, the message is misconstrued. Unhealthy Lifestyle: Media is responsible for the change in eating habits of teenagers and the unhealthy lifestyle they are adopting. Media Addiction: The negative effects of media on children are manifested in terms of their changing mental setup and the declining quality of their lifestyle. Health Problems: Media has negative effects on the physical and psychological well-being of society. People spending hours in front of a television or surfing the Internet experience eye problems.A survey is conducted by  Gilani Research Foundation, on January 20, 2011 According to that survey Fifty two per cent people believed that media has a valuable effect on culture and lives . Whereas,   29 per cent said that it left no impact on their lives. A considerable 19 per cent gave no comments because they were unsure. Now I will te ll you about a seminar which is organized by a Youth Forum on Tuesday, June 29, 2004 at Aga Khan University Auditorium. The speakers said that research had shown that children were prone to imitate what they saw on media.Teachers' Development Centre Director Prof Abbas Hussain said that children through media got aware about certain facts of life mysteries, contradictions, tragedies and violence, which were not considered suitable for them to know. suggestions parents should see what children were watching in order to minimize the effects of such programmes. â€Å"Television should not be used as a baby-sitter,† we should remove television sets from bedrooms, monitoring of the websites they visit, setting of time limitation and finding alternative activities for them would be very helpful in reducing negative effects on personality of children.

Sunday, November 10, 2019

The Depletion Of Global Oil Reserves Environmental Sciences Essay

The literature reappraisal summarized the research done on the job that planetary oil militias are consuming twenty-four hours by twenty-four hours and there is a desperate demand to happen out and utilised surrogate energy options particularly for a underdeveloped state. The depletion of planetary oil militias has led to struggles between the states and surging of monetary values. Oil is the chief beginning of energy and developing states are confronting batch of jobs due to shortage of oil in supplying their populations better life criterions. The literature besides covered state of affairs of deficit of oil militias and energy crises consequent to it. It identifies chief consumers of oil in a state and jump energy resources that could perchance be worked on to run into the energy demand through beginnings other than oil.Depletion OF GLOBAL OIL RESERVESThe API estimated in 1999 the universe ‘s oil supply would be depleted between 2062 and 2094, presuming entire universe oil militias between 1.4 and 2 trillion barrels and ingestion at 80 million barrels per twenty-four hours. In 2004, entire universe militias were estimated to be 1.25 trillion barrels and day-to-day ingestion was about 85 million barrels, switching the estimated oil depletion twelvemonth to 2057. The US EIA predicted that universe ingestion of oil will increase to 98.3 million barrels per twenty-four hours in 2015 and 118 in 2030. With 2009 universe oil ingestion at 84.4, making the jutting 2015 degree of ingestion would stand for an mean one-year addition between 2009 and 2015 of 2.7 % per twelvemonth while EIA ‘s ain figures show worsening ingestion and worsening supplies during the 2005-2010 period. The universe ‘s oil supply is fixed because crude oil is of course formed far excessively easy to be replaced at the rate at which it is being extracted. Over many 1000000s of old ages, plankton, bacteriums, and other works and carnal affair become buried in deposits on the ocean floor. When conditions are right – a deficiency of O for decomposition, and sufficient deepness and temperature of burial – these organic remains are converted into crude oil compounds, while the deposit attach toing them is converted into sandstone, siltstone, and other porous sedimentary stone. When capped by impermeable stones such as shale, salt, or pyrogenic invasions, they form the crude oil reservoirs which are exploited today.3.2 ENERGY SECTOR IN PAKISTANEnergy is considered as one of the most of import inputs to economic growing and development. Its ingestion is besides one of the important indexs of the degree of development of any state. It is now good recognized that energy se rvices play a important function in heightening societal and economic development. Energy has become an engine of economic growing at local and planetary degree. It is needed worldwide for furthering and prolonging development procedure position of developing or developed provinces of the economic system. Keeping in position the planetary economic growing coupled with an addition in population, the demand for energy is bound to increase and run intoing this demand poses serious challenges at the planetary degree. In coming decennaries, the demand for energy is expected to turn more quickly in developing states. Since independency, the cardinal push of Pakistan ‘s energy policy has been on augmenting the state ‘s energy system. As a consequence of important planning and public investing, there has been significant enlargement of energy sector. Despite the important development in the energy sector, Pakistan yet suffers from energy deficit. This state of affairs has been progressively viewed as a constriction to industrial and agricultural sectors that in bend are seen critical in exciting the economic and societal development. Bing a developing state, Pakistan has faced the challenge of fueling industry and agribusiness sectors adequately for run intoing growing marks and supplying energy at low-cost monetary values to hapless particularly those populating in the rural countries. The handiness of energy at low-cost monetary values can be a major factor that determines a whole array of other productive activities taking to economic growing.NATIONAL ENERGY MIXEnergy sector in Pakis tan comprises electricity, gas, crude oil, coal and atomic power. The portion of natural gas in primary energy supplies during 2010 reached 45 per centum followed by oil ( 28 per centum ) , hydro electricity ( 15 per centum ) , coal ( 10 per centum ) and atomic electricity ( 2 per centum ) . As can be seen Pakistan is dependent on oil and Gas, which together contribute about 73 % of the entire primary energy supplied.3.4 POWER GENERATION, SECTORAL DISTRIBUTION AND CONSUMPTIONThe sum installed capacity coevals during 2006-07, was 19,440 MW. WAPDA generated 11,363 MW of which, hydle histories for 56.9 per centum or 6,463 MW, thermic histories for 43.1 per centum or 4,900 MW. IPPs coevals was 5858 ( MW ) which constituted 30 % of entire installed capacity. KESC with 1756 ( MW ) contributed 9.1 % portion and atomic added 2.4 % .Number of WAPDA consumers stood at 17 million out of which family accounted for 84 % , commercial 13 % and industrial and agricultural1.4 % each. As on 30th June, 2007 industrial sector consumed 26 % , agriculture 12 % and households 43 % besides commercial and others. The one-year per capita electricity ingestion in Pakistan is about 320kwh, and this lone caters for 60 per centum of the population. Forty per centum of Pakistanis st ill have no entree to electricity. There is presently load sloughing of up to 700 MW a twenty-four hours because of deficit & A ; hapless transmittal capablenesss. Electricity demand is expected to turn by eight per cent a twelvemonth during the period 2005 – 2015, necessitating an one-year installing capacity of about 2000 MW for the following 10 old ages. Presently about 45 % of Pakistan ‘s power supply is based on natural gas, 28 % on oil, 15 % on hydro and staying on coal, atomic and renewable electricity. Keeping in position the current power mix, it is indispensable to concentrate on autochthonal and cost effectual beginnings for power coevals.3.5 CURRENT ENERGY GAP IN PAKISTANPakistan is presently confronting electricity deficit of around 4000-9000 MW. Everyone agrees that an indispensable stipulation for industrial development is an uninterrupted supply of power.The installed capacity for coevals of electricity in the state is 11,500 MW of which 82.7 per cent was thermic ; 15.3 per centum was hydroelectric and 2 per centum was atomic. Pakistan needs to prolong an one-year economic growing rate of at least 6 to 7 per centum to relieve poorness and recognize desirable socio-economic and human development. To accomplish the growing mark of GDP, it is perfectly indispensable that the minimal electricity growing rate is maintained. The proviso of adequate and dependable supply of electricity at a sensible cost is a requirement to achieve this end. Power is the premier mover. Any large push of the economic system would necessitate accelerated power development. But there is a likeliness that Pakistan ‘s current economic growing might non prolong in the absence of consistent and uninterrupted devolution of new power undertakings.3.6 REVIEW OF PAKISTAN ‘S ENERGY PORTFOLIOLooking at the power portfolio of Pakistan it looks as if we are populating in an oil rich state. Soon, Pakistan has batch of oil fired power workss. Continuous hiking in furnace oil monetary values can do them unviable in close hereafter. But even if fortunes are non utmost, even if there are no turbulences in bring forthing states, no terrorist onslaughts and supply breaks, the monetary values will maintain traveling up. Why? Because there is a cardinal instability for oil in the universe economic system. Production is merely plenty to run into demand. There is no trim capacity to take attention of unanticipated closures, supply break or a farther rise in demand. Such an unbalance power profile carries serious reverberations. An evenhanded power portfolio would necessitate a just balance among assorted beginnings of power with no inordinate trust on any. One of the few affairs which must be considered in set uping the power portfolio is that inordinate trust on any individual beginning particularly foreign beginning on which we have no control over supply and monetary value can do things suffering any clip. Oil import measure of more than $ 7 billion or about 50 % of foreign exchange militias of a developing economic system with no hopes of making exportable excess in the close hereafter is doubtless really dismaying. As 28 % of the power coevals is based on oil therefore any hinderance in the transit of oil can do terrible harm to the economic system. In short, clip has proved that the best solution for all such jobs is encouragement and development of autochthonal resource. Many states, including the developed and emerging economic systems, have adopted extended plans for increasing hydle and coal based power into their energy portfolios. It would non be incorrect if we say that uninterrupted carelessness of autochthonal resource has made Pakistan ‘s power policy directionless. This carelessness, absence of precedences and concentrating on expensive foreign fuel has made inexpensive electricity and ego trust a twenty-four hours dream. Pakistan is fortunate plenty to hold two inexpensive autochthonal resources for power coevals i.e. H2O and coal. But it is absolute bad fortune that we have non been able to utilize both of these resources efficaciously. Estimated coal militias of Pakistan are around 185,175 million dozenss which is one of the largest coal militias of the universe whereas their use for electricity coevals is hardly 10 per centum. Basically autochthonal coal-based power will convey assorted benefits for Pakistan ; foremost and first benefit would be huge nest eggs in foreign exchange on import of expensive oil. Coal based power workss are labour intensive and will make 1000s of new occupations and assorted other new concern chances at works site in peculiar and in Pakistan in general.ENERGY CONSUMPTION AND QUALITY OF LIFE IN PAKISTANLike any other state, energy is critical for the economic development of Pakistan. Energy should non merely be available but it must be ensured that it is available at a s ensible and low-cost monetary value and with out any break. For a underdeveloped state, like Pakistan where the chief emphasis is on the poorness relief, energy dramas a positive function. It is imperative that energy production should be environment friendly. More over a mix of energy beginnings will be helpful in variegation of the sector and would guarantee the proviso of this critical resource where it is required. The phase of economic development and the criterion of life of persons in a given part strongly act upon the nexus between economic growing and energy demand. An increased usage of energy, either through natural gas or electricity, impacts favorably on the life criterions of the hapless as they so spend less clip looking for alternate signifiers of fuel such as firewood. Similarly, the proviso of electricity to the rural countries can assist in raising productiveness degrees of small-scale industry thereby indirectly raising income degrees and in the longer term bettering the quality of life for the rural hapless. Rural electrification is of import because it brings to the rural countries the benefits that urban consumers take for granted -an betterment in the criterion of life with the associated socio-economic benefits. Provision of electric power besides has a strictly economic result that of increasing the productive capacity of the rural countries with additions in agricultural end product.3.7 PAKISTAN ENERGY SECURITY PLAN AND ENERGY MIXPakistan historically has been subjected to energy demand suppression due to limited supplies and deficiency of substructure development for proviso of energy to the industrial sector. The non handiness of sustained and low-cost energy to industry has suppressed economic growing and created worsening inclination for industrial investing in the state. It is now more of import so of all time that an equal supply be made available to industry to drive economic growing, and make employment chances. Energy has besides to be made available to the domestic sector and the life line sections of society to supply economic support and the convenience of clean fuel for cookery and warming and forestall the go oning environmental debasement and deforestation by monolithic usage of wood for domestic fuel. The commercial handiness to assorted sector of the economic system will assist in increasing occupation chances, heightening agribusiness productiveness, bettering criterion of life and preserving environment through cut downing deforestation. A long term integrated National Energy Security Plan, covering the period up to 2030 has late been approved by the Government vide Mid Term Development Framework ( MTDF ) . The energy sector development is aimed at ( I ) sweetening in the development of hydropower, and geographic expedition and production activities of oil, gas and coal resources, and to increase the portion of coal and alternate energy in the overall energy mix, ( two ) optimal use of the state ‘s resources base to cut down dependance on imported oil through an institutionalised scheme, ( three ) making an environment conducive to the engagement of the private sector, and ( four ) developing the local energy scenario in the context of regional position. The current energy mix includes 28 per centum oil, 45 per centum natural gas, 10 per centum coal, 15 per centum hydro and 2 per centum atomic. By 2015, the portion of oil and gas is targeted to be reduced to 25 per centum and 42 per centum severally with matchi ng additions in the portion of coal to 12 per centum, hydro to 17.6 per centum, renewable to 1 per centum and atomic to 3 per centum. Over the long term, the addition in other beginnings of energy, has been targeted with significant decrease in the portion of oil.EXISTING ENERGY RESOURCES IN PAKISTAN THE CONVENTIONAL RESOURCES3.8 HYDROPOWERThe identified hydro power potency of Pakistan is 46,000 MW, out of which merely 14 per cent ( 6,500 MW ) has been exploited so far. Despite this large potency, no hydro power undertaking has been established by WAPDA since Tarbela Dam. The most executable and economical undertaking Kala Bagh Dam has become so controversial that it could non take off though consecutive authoritiess wished so. There are programs to develop the hydro resources on a big graduated table through storage and run -of-the-river undertakings. Feasibility surveies of several undertakings have already been prepared, while surveies of several extra undertakings are in advance ment or planned. Hydro is one of the major economic energy supply options in Pakistan for increasing the energy security of the state. The experts caution that for the clip skylines of around 100 old ages, hydro storage undertakings are ‘non -renewable ‘ due to the silting of these reservoirs. For illustration, over the last 30 old ages, the storage capacity of Tarbela dike has been reduced by 27 per cent due to silting. Similarly, there is a universe broad concern over the disruption of population and the environmental jeopardies associated with big dikes. Another issue related to the hydro power is that a big figure of extra sites with major possible exist in the cragged North, but the trouble of entree and the high cost of transmittal to the thickly settled South make the thought into a completed undertaking a distant chance. Not merely, it means extra cost to construct the transmittal substructure but at the same clip a immense loss occurs during the transmittal ( it is estimated to be between 28 to 30 per centum ) . Another job is the seasonal fluctuation, where in winter the coevals is reduced due to shortage of H2O in the storages. However, hydro is still the most economical energy resource in Pakistan.3.9 OIL AND GASThere are considerable oil and gas militias in Pakistan. The rough oil militias are estimated at 27 billion barrels including 300 million barrels proved militias. The degree of production is soon 22.6 million barrels compared with the degree of ingestion of 100 million barrels. The natural gas militias are 8 trillion three-dimensional metres including the proved militias of 0.8 trillion three-dimensional metres. The degree of production is soon 93 million three-dimensional metres per twenty-four hours compared with the degree of ingestion of 82 million three-dimensional metres per twenty-four hours. The oil sector has all along been to a great extent dependent on imports of approximately 85 per centum of the national demand. Ann ually about 7.8 million metric tons of petroleum oil, 5.2 million metric tons of oil merchandises and 2.8 million metric tons of coal are being imported. The local production of oil and gas would get down worsening due to depletion of resources. There would besides be a shortage of gas unless considerable part is made from new finds. In instance the spread is non met through autochthonal supply, there will be need to import gas, and the needed substructure would hold to be placed in a timely mode.3.10 CoalPakistan ‘s coal resources are estimated at 185 billion metric tons ( 82,700 MTOE, or 2 per cent of the universe coal resources ) , out of which 95 per cent are in the Thar coal field in Sindh. This coal is of lignite rank holding high wet content and low warming value. So far merely 3.3 billion metric tons of coal resources are in the ‘measured ‘ class, and sing a recovery factor of 60 per cent, these correspond to some 2.0 billion metric tons of recoverable coal militias. However, this coal is tantamount to the combined oil militias of Saudi Arabia and Iran. As portion of the scheme of increasing local energy content, a major accent is being placed on working coal resources for large-scale usage in power coevals, and perchance for the production of coal bed methane.3.11 NUCLEAR ENERGYPakistan has two atomic power workss, Chashma-1 and Kanupp, with 300 MW and 125 MW severally, of installed capacity. The PAEC operates both atomic workss. Pakistan is presently working on a 3rd atomic power works ( Chashma-2 ) , with the aid of China National Nuclear Corporation. The works will hold 325 MW of installed capacity expected to be completed by 2012.INTRODUCTION AND DESCRIPTION OF ALTERNATE ENERGYEnergy is one of the most of import issues for all authoritiess universe over. Developed provinces need energy to prolong their advanced manner of life and to provide to the every-changing demands of life dictated by engineering. Developing states need ener gy for it is the sine qua non for development. Alternative energy has been the most recent add-on to the academic and practical facets of the energy universe. The construct is relevant but its importance is absolute. Developed provinces have begun to pull off their energy sector in an progressively alternate energy based position and, this has a great lessons for a state like Pakistan which is draw a bead oning to develop into a healthy economic system with an improved quality of life for its citizens. The theory and usage of alternate energy is at the most introductory phase in Pakistan. However, in footings of resources and usage of surrogate energy, Pakistan stands good placed to use this fresh construct in the national policy model Alternate or renewable energy, beginnings show important promise in assisting to cut down the sum of toxins that are byproducts of energy usage. Not merely do they protect against harmful byproducts, but utilizing alternate energy helps to continue many of the natural resources that we presently use as beginnings of energy. The Alternate Energy Development Board ( AEDB ) has been established to ease development of renewable energy undertakings. At least 5 per cent of the entire electricity bring forthing capacity of the state is targeted to be based on these beginnings by the twelvemonth 2030. To understand how alternate energy usage can assist continue the delicate ecological balance of the planet, and assist us conserve the non-renewable energy beginnings like fossil fuels, it is of import to cognize what types of alternate energy can be brought into world in Pakistan. Renewable beginnings of energy like air current power, solar, geothermic energy, moving ridge and tidal power, biomass energy, H and fuel cells, every bit good as hydropower are options to fossil fuel and regarded as alternate beginnings of energy.3.12 WIND POWERWind power is one of the earliest signifiers of energy used by world. Windmills were used on farms in the early portion of the 20th century to pump H2O and generate electricity. Now considered an alternate energy beginning, air current power is being harnessed by modern windmills with lighter, stronger blades. In US provinces such as California, New Hampshire, Oregon, and Montana, up to several hundred windmills may run together in unfastened count ries with steady air currents. Single elephantine windmills capable of supplying electricity to several thousand places are besides runing in the United States. With new engineerings being developed to better windmill public presentation and efficiency, air current power is a promising, clean, inexpensive, and abundant beginning of energy for the hereafter. The air current power captured by turbines at is a beginning of energy that does non harm the environment. Wind energy harnesses the power of the air current to impel the blades of air current turbines. The rotary motion of turbine blades is converted into electrical current by agencies of an electrical generator. In the older windmills, wind energy was used to turn mechanical machinery to make physical work, like oppressing grain or pumping H2O. Wind towers are normally built together on air current farms. Now, electrical currents are harnessed by big graduated table air current farms that are used by national electrical grids every bit good as little single turbines used for supplying electricity to stray locations or single places. Wind power produces no pollution that can pollute the environment. Since no chemical procedures take topographic point, like in the combustion of fossil fuels, in air current power coevals, there are no harmful byproducts left over. Since air current coevals is a renewable beginning of energy, Pakistan will ne'er run out of it. Farming and graze can still take topographic point on land occupied by air current turbines which can assist in the production of bio-fuels. Wind farms can be built off-shore. Since 2001, planetary air current capacity has about doubled to 47,760 megawatts and is cheaper than natural gas even without subsidies ; on good sites, air current is even shuting in on coal. Pakistan has potencies of air current energy runing from 10000MW, yet power coevals through air current is in intiaial phases in Pakistnan and presently 06 MW has been installed in first stage in Jhampir through a Turkish company and 50 MW will be installed shortly. More wind power workss will be built in Jhampir, Gharo, Keti Bandar and Bin Qasim Karachi.3.13 SOLAR POWEREnergy from the Sun is a free, abundant, and nonpolluting beginning of energy. Solar power involves utilizing solar cells to change over sunshine into electricity, utilizing sunlight hitting solar thermic panels to change over sunshine to heat H2O or air. Pakistan has potency of more than 100,000 MW from solar energy. Buildinn of solar power workss is afoot in Kashmir, Punjab, Sindh and Balochistan. However, private sellers are importing panels/solar H2O warmers for ingestion in the market. Alternative Energy Development Board ( AEDB ) is working for 20,000 solar H2O warmers in Gilgit Baltistan. Mobile companies have been asked by theh authorities to switch supply of energy to their transmittal towers from crude oil to solar energy panels.3.14 GEOTHERMAL ENERGYGeothermal energy harnesses the heat energy present underneath the Earth. Hot stones under the land heat H2O to bring forth steam. When holes are drilled in the part, the steam that shoots up is purified and is used to drive turbines, which power electric generators. If done right, geothermic energy produces no harmful byproducts. Once a geothermic works is build, it is by and large self-sufficing energy wise. Geothermal power workss are by and large little and have small consequence on the natural landscape. Geothermal energy is the natural heat generated in the inside of Earth and released from vents and hot springs or from geysers that shoot out het H2O and steam. Reservoirs of hot H2O and steam under Earth ‘s surface can be accessed by boring through the stone bed. The of course het H2O can be used to heat edifices, while the steam can be used to bring forth electricity. Steam can besides be produced by pumping cold H2O into stone that is heated by geothermic energy ; such steam is so used to bring forth electric power. Geothermal energy is an of import alternate energy beginning in countries of geothermic activity, including parts of the United States, Iceland, and Italy. Homes in Boise, Idaho, are heated utilizing geothermic energy, as are most edifices in Iceland. The Geysers in California is the largest steam field in the universe and has been used to bring forth electricity since 1960. Unlike solar energy and air current power, nevertheless, the usage of geothermic energy has an environmental impact. Chemicals in the steam contribute to air pollution, and H2O assorted with the steam contains dissolved salts that can eat pipes and injury aquatic ecosystems.3.15 TIDAL AND OCEAN ENERGYThe rise and autumn of ocean tides contain tremendous sums of energy that can be captured to bring forth electricity. Tidal power cab be extracted from Moon-gravity-powered tides by turn uping a H2O turbine in a tidal current. The turbine can turn an electrical generator, or a gas compressor, that can so hive away en ergy until needed. Coastal tides are a beginning of clean, free, renewable, and sustainable energy. Plans are underway in Pakistan to tackle tidal energy, nevertheless, no execution has been made so far.3.16 AGRICULTURE BIOMASS/BIODIESELBiomass production involves utilizing refuse or other renewable resources such as sugar cane, maize or other flora to bring forth electricity. When refuse decomposes, methane is produced and captured in pipes and subsequently burned to bring forth electricity. Vegetation and wood can be burned straight to bring forth energy, like fossil fuels, or processed to organize intoxicants. Brazil has one of the largest renewable energy plans from biomass/biodiesel in the universe, followed by USA. Alternative Energy Development Board ( AEDB ) of Pakistann has planned to bring forth 10 MW of electricity from municipal waste in Karachi followed by similar undertakings in 20 metropoliss of state.

Thursday, November 7, 2019

Natural Resources Essay Example

Natural Resources Essay Example Natural Resources Essay Natural Resources Essay Soil, wood, oil. minerals, petroleum, water are considered natural resources because they occur in their natural form and are not made by human beings. Humans can only modify natural resources. The energy that makes natural resources comes from geochemical, geophysical and solar energy. The exploitation of nature and natural resources can be dated back to the advent of humankind and the very start of civilization. Earlier people used to cut trees for fuel, for building materials for boats and for shelter. There are two kinds of natural esources- renewable and nonrenewable. Wood which is one of the main natural resources has the advantage of being renewable. Fish, animals and forests can renew themselves if they are not over- harvested. Forests can be replanted and, in time, the wood that was used can be replaced. However in recent times, we have been witnessing the cutting down of trees at alarming rates. In cities it is becoming, increasing difficult to see a green patch. If we do not replace these trees at the same speed as we are using them then very soon his resource will be expended. The cutting of trees also results in loss of ecosystems and soil erosion, and less rainfall. When fossil fuels were discovered they momentarily took the pressure off wood. First there was coal, then oil as in crude oil or petroleum and then later petrol and more recently natural gas. However unlike trees that are a renewable resource all these are non renewable. The reserves are finite and at some point in the future they will be depleted. We need to first conserve what we have left and to do that the call of the day is to use hese natural resources sparingly and responsibly. We must resort to the use of alternative forms of energy which will lessen the burden on our natural resources. There are various forms of alternative energy available. Light from the Sun also called as Solar Energy can be converted into electricity. This solar energy could be used to cook food. Wind power could also be used to generate electricity. Bio gas which is generated by the action of bacteria on packed kitchen waste without xygen could be used as an alternative to liquid petroleum gas. The need of the hour is to make alternative forms of energy easily available and viable to the consumer. nature, preservation of endangered species, keeping of biodiversity, and so on. Recently there have been increasing reports about research of ecosystem preservation using remote sensing or GIS (Geographic Information Systems) spatial analysis. Sustainable forestry could be achieved by correctly managing forest resources hrough replanting, conversation, and protection from fire, disease and pollution. We must all Join hands in our efforts to preserve our natural resources. Preservation cannot happen without conservation; hence we must all do our part in conserving. Instead of using individual cars to work we could use car pools, we could make an effort not to use our domestic appliances during peak hours, we could use public transport wherever possible and we could switch to alternative power use. We, each of us, can make preservation happen.

Tuesday, November 5, 2019

Independent Variable Definition and Examples

Independent Variable Definition and Examples The two main variables in a science experiment are the independent variable and the dependent variable. Heres the definition on independent variable and a look at how its used: Key Takeaways: Independent Variable The independent variable is the factor that you purposely change or control in order to see what effect it has.The variable that responds to the change in the independent variable is called the dependent variable. It depends on the independent variable.The independent variable is graphed on the x-axis. Independent Variable Definition An independent variable is defines as the variable that is changed or controlled in a scientific experiment. It represents the cause or reason for an outcome.Independent variables are the variables that the experimenter changes to test their dependent variable. A change in the independent variable directly causes a change in the dependent variable. The effect on the dependent variable is measured and recorded. Common Misspellings: independant variable Independent Variable Examples A scientist is testing the effect of light and dark on the behavior of moths by turning a light on and off. The independent variable is the amount of light and the moths reaction is the dependent variable.In a study to determine the effect of temperature on plant pigmentation, the independent variable (cause) is the temperature, while the amount of pigment or color is the dependent variable (the effect). Graphing the Independent Variable When graphing data for an experiment, the independent variable is plotted on the x-axis, while the dependent variable is recorded on the y-axis. An easy way to keep the two variables straight is to use the acronym DRY MIX, which stands for: Dependent variable that Responds to change goes on the Y axisManipulated or Independent variable goes on the X axis Sources Dodge, Y. (2003). The Oxford Dictionary of Statistical Terms. OUP. ISBN 0-19-920613-9.Everitt, B. S. (2002). The Cambridge Dictionary of Statistics (2nd ed.). Cambridge UP. ISBN 0-521-81099-X.Gujarati, Damodar N.; Porter, Dawn C. (2009). Terminology and Notation. Basic Econometrics (5th international ed.). New York: McGraw-Hill. p. 21. ISBN 978-007-127625-2.

Sunday, November 3, 2019

Aviation Law Case Study Example | Topics and Well Written Essays - 2250 words

Aviation Law - Case Study Example A brief study of the various kinds of infringements of the rules and the supposed remedial measures or punishments for each help determine which rules Jack has infringed upon and understand the punishment he is liable for the same. Understanding of the severity of the infringements and a closer look at Jack's reasons and situations which have led to the supposed infringements by him help in a more detailed analysis and recommendations to Jack for facing the trial which would sure follow. Although the Jack has managed to avoid any serious accident or damage, it is still a case of serious infringement to a certain extent. Even the psychological conditions have to be taken into consideration as Jack had been awake all night and had been allowed to hire the aircraft without being strict in adherence to the rules before taking off. There exists provisions of the Air Navigation Order (ANO) with Regulations like The Rules of the Air Regulations, The Air Navigation (General) Regulations, the Air Navigation (Cosmic Radiation) (Keeping of Records) Regulations, the Air Navigation (Dangerous Goods) Regulations and a number of permanent Air Navigation (Restriction of Flying) Regulations made under the Order. These Regulations are it also contains the provisions of the Civil Aviation Authority Regulations. These basic categories of regulations and their ... The organizational bodies and their regulations are considered in detail which helps to identify the list of probable infringements Jack could face. The different regulations by the ANO that are framed are all concerned with each detail of aviation transportation, both civil and military aviation. The basic need for organized way of conducting the activity and ensuring safety of man and machine is kept in mind to formulate these rules. The provisions for flying and the orders or rules for the aircraft include the rule for pilots to comply with Air Navigation Order, Air Navigation General Rules and Rules of the Air. The Rules of the Air Regulations of 1991 specifies the regulations based on the context for interpretation of the same. These are categorized into general, visual flight rules, instrument flight rules, aerodrome flight rules, special and general flight rules, visual and aural signals and lights and signals to be shown by the aircraft (Statutory Instrument, 2000). Further, the authorizations and documents required, emergency drills, local regulations and accident reporting are also laid down (Bowman, 2007). According to Articles 3 to 7 of ANO, an aircraft should be registered by CAA in the United Kingdom and contain the trademark of the aircraft and country. Articles 8 to 24 and 95 of CAA like Certificate of Maintenance Review, Equipment of aircraft, and Radio equipment of aircraft require that any aircraft be checked for flight conditions before and after flying. All pilots are required to comply with all the regulations of the provisions of the ANO. Articles 26 and 28 to 37 lay the rules for validation of licences, personal flying log book, the pilot's