New fuel cell technology used to replace APU in new boeing 737 and Essay

New fuel cellular telephone technology used to replace APU in new boeing 737 and airbus A320 - Essay ExampleIt is monitored and controlled by the electronic Controller. There are actually many different kinds of APUs used in the Boeing 737, created by a few different manufacturers. The AlliedSignal APU has the highest power rating at 90kVA up to 31,000 ft. (Brady, 1999) this power rating drops at higher altitude. Fuel cell technology is currently able to match this 90 kilo-Volt-Ampere power rating, in enact to replace this APU. This has been demonstrated in test flights of hydrogen-powered aircraft, as described below.The SOFC uses jet fuel as the reformer in the proton exchange membrane to give a 440kW APU that is 75% efficient compared to the conventional 40-45% efficient APUs. This would give a typical fuel saving of 1,360t for a 737 over a year. It is actually a crossing gas turbine / fuel cell due to the sudden surges in demand eg engine starts and gear retraction etc. The SO FC will use air from a compressor passed through a heat exchanger for its gas turbine section. A potential drawback is that it has a 40min start-up sequence, so it would have to remain on for the whole day and depending upon its note levels this could be a problem at airports which require the APU to be shutdown during the turnaround. The efficiency of SOFCs over conventional APUs is large although the long start-up time top executive be prohibitable. The technology needed for a SOFC APU to replace the current Boeing APU may be available by 2010, but it could take much longer. Boeing was working in conjunction with Airbus to develop the necessary technologies to replace the APUs with fuel cell technology, since they essentially share the same supplier pool, but they were ready to split when it came to time to develop competitive finished products.The technology for building hydrogen-fueled aircraft has already been demonstrated. The Airbus A320 Fuel Cell Demonstrator was first pu blicly presented in Berlin in 2008. The fuel cell system provides 20kW of

Womanist Theology Research Paper Example | Topics and Well Written Essays - 1500 words

Womanist Theology - Research Paper ExampleMany theological stories associate African the Statesn women with motherhood. Black women had a strong bond with their children and existed in Africa before their movement to America as knuckle downs. Fathers could non assume their responsibility mainly due to reasons emanating from hard workerry in plantations or studs. As such, black women had to spirit their children on their own due to slavery. In other parts of Africa, black women earned their living through working as market women whereas in the America slave mothers worked in plantations and if they were city slaves, worked in other capacities as hired slaves. This paper will discuss womanhoodist theology basing its argument from theologian Delores Williams, the writer of The Sisters of the Wilderness. check to Delores Williams, a host of alien political and social forces controlled the black woman and shaped her present life. During slavery times, Anglo American family and soci al demands controlled her life and thus in the course of her life, she found herself falling victim of cultural redefinitions and black male female crises as well as role exploitation. These crises affected the black womans well being seriously and as s result the new world of slavery in America adjusted her to meet the American institutional needs during those times. Theological studies based on literary history reveals the role of African American women as vital in development of union since the time of antebellum in North America throughout today. Black women used religion to console themselves upon encountering emotional, psychological, spiritual exploitations from the white world and even round black community members. Black mothers used to serve as mammies in the white families back in slavery times however later, religion redeem their role and reinstituted and made them important denominational mothers of the church. In this context, black African American women used to se rve as powerful and figurative mothers of the church. Many slave narratives describe black African American mothers as burdened by bondage system between them and their children. However, of the hundred and thirty spiritual songs available in the Ballanta Taylor collection describe black mothers as helpful women, caring mothers, and nurtures filled with maturity. As opposed to spiritual songs, slave narratives projected the relationship between slave owners and black women as exploitative and negatively affected their well-being. Just as slave narrative narrated by Linda Brent, describe the relationship between the wife slave owner and the black mother as exploitative as the latter jargons avid her nurturing and mothering roles. Black or slave mothers manifested apparent and great strengths in not only nurturing and mothering their young ones they also manifested their strength in their ability to endure as well as emerge victorious over suffering and botheration that accompanied t heir hard roles. This endurance and later emergency of victory related directly to slave mothers in depth dependence on idol. This argument is translucent spiritual lines of songs in religious faith revealed in both slave narratives and religious songs. In other instances within the story, mothers depended on religion on gentility their children. A particular slave named Sojourner Truth in the excerpt describes her mother as using religious ritual to bring up him. She always prayed to God to protect her and her son from the oppression of slavery. With that respect, it is evident that slave mothers who were black African American women used religion as a means of survival by asking God to take care of both themselves and their children. Strength among slave mothers is also evident in other tasks that she performed such as providing for,

Quotes Essay Example | Topics and Well Written Essays - 500 words

Quotes - Essay ExampleHowever, there is still a life which goes on behind bars and a continuation of life which should be supported. date a prisoner is certainly placed under boundaries of law, s/he does not stop being a human being and it must be noted that s/he has the same right to be treated humanely and with as much importance as those who are not with him/her in prison. The treatments and the rights are controlled by those who are supposed to manage prisons and things such as college degree earning program for prisoners abide improve conditions for many prisoners. Instead of simply wait for their time in prison to pass, they can be educated and taught to enhance their abilities and as a captive audience, they would be receptive to the education which is given to them. just now put, with the program, the prison system can put out educated college graduates while without the program the prison system is only putting out ex-convicts.All professedly stories become unbeliev fitt ed as soon as we are told that they are true story or the events which are told to us are based on a true story. While we accept them as the truth, the element of disbelief and wonder is not taken away and we have to keep reminding ourselves that the story itself is true. We can certainly find examples of such stories in the media and even in anecdotes that we tell each other. For example, a baby that survives a burning building, a child who is able to beat grandmasters at chess, a person fighting against unbelievable odds, social stigma as well as other barriers that have been placed in his/her part and becoming successful in their endeavors. Most recently, we saw true events unfold in front of us as jetliners were used by terrorist as weapons against America.However, I feel that the most unbelievable true stories are the ones which take place everyday around us but are simply not reported. For example, a young high school student that does not take

Alternative Energy Resources Research Paper Example | Topics and Well Written Essays - 2000 words

Alternative Energy Resources - Research Paper ExampleThe temperature level in the solid ground has critical role hence it cannot be produced in in both the localities. Scientists have estimated that the amount of geothermic power present in the crust of earth is fitting to fulfill the energy requirements of the world for upcoming many centuries. It is sustainable, cost effective, and reliable and has the tendency to facilitate all mainstream energy units (Jorgensen 51). According to Ting (2011, p.230), the oil production port for the production of this kind of energy is very expensive. The machinery and equipment required for the digging purpose cannot be afforded easily. The selection of appropriate place needs accuracy as drilling be are too high. Governments intervention for this energy producing resource is essential as private bodies cannot solely bear its costs. Some countries like United States, Philippines, field glass land and Japan have taken serious measures to pro duce energy from this form. China is taking colossal steps in this regard too. The expense of machinery at long last effects on the consumers too thus people have to pay lot more than usual rates. Chevron Corporation has immensely invested in the geothermal production units. It is the largest private sector energy producing unit and has tremendously facilitated numerous consumers throughout the globe. The focus of the corporation remains to fulfill energy requirements of residents at all levels. Currently in United States more than 77 geothermal power electricity units are operational producing approximately 3086 MW energy. The Geysers, California is the region where Americas largest geothermal production unit is installed. Philippines government and private sector has taken incredible... This report stresses that geothermal power is one of the safest forms of energy production expeditions. The energy requirements of all the countries can be easily fulfilled if geothermal energy un its are incorporated. World would eventually progress rapidly and swiftly when energy shortfalls are eradicated. The machinery, equipment and team required for the plantation purpose of geothermal powers requires accuracy and precision. The costs of geothermal energy production are relatively higher than other forms of the energy producing models except it ensures long lasting success. The major constituent making geothermal prominent is the deduction methodology of this energy source. Since earths crust is the resource and too stores energy too, therefore there is no element of reserving it somewhere else. The independence by federal government of U.S to its respective states has brought significant outcomes. This essay makes a coating that moreover countries have to bear costs of this energy production unit once it can fulfill energy requirements for upcoming numerous years. Researchers have idealistic geothermal as the best method of energy production and have also discussed its economic factors too. In the inauguration of any energy producing reservoir costs have to be met. The amount is eventually spent annually or semiannually on the maintenance and up gradation of energy production models barely geothermal guarantees long-lasting sustainability, reliability and cost effectiveness.

H.W 12 GSC125-01 Essay Example | Topics and Well Written Essays - 250 words

H.W 12 GSC125-01 - Essay ExampleMore intense cells (tropical squall clusters) can form that are similar to middle analog squall lines. In contrast to middle latitudes, there is very little horizontal pressure gradient. 3. Describe the typical weather in the eye of a hurricane. Answer The eye is at the center of a hurricane and is an area of almost cloudless skies, subsiding air and light winds. The eye generally ranges from 10 to 65 km across, shrinking in diameter as the hurricane intensifies and winds strengthen. Passage of the hurricane eye is followed by heavy rains and ferocious winds blowing from the opposite direction. 4. What three conditions are required for a tropical cyclone to form? Answer A relatively high sea-surface temperatures, adequate Coriolis Effect, and weak winds aloft are the three necessary conditions for a tropical cyclone to form. 5. why does a hurricane weaken when the system tracks from ocean to land? Answer A hurricane over land is no longer in contact w ith its energy source, i.e. torrid ocean water. Additionally, the frictional resistance offered by the rougher land surface slows the wind and shifts the wind in direction toward the low-pressure center of the system causing the assault to fill and weaken. The system may still produce tornadoes after making landfall, partially due to strong wind shear between the surface and aloft. Chapter 12, comminuted Thinking Questions 7.

Aspergers Syndrome and High Functioning Autism Essay

Aspergers Syndrome and High Functioning Autism - Essay Example3, Wilson, 2005, par. 4). In fact, the similarities in the midst of these disorders be so extensive that numerous experts maintain there is no substantive diagnostic distinction between them. The frequently posed question is whether these disorders should be conceptualised (sic) as part of a individual continuum or whether they argon distinct diagnostic entities (Dissanayake, 2004, par. 2).The differences between AS and HFA are thought by some experts to be merely quantitative, not qualitative, such that they are limited to varying degrees of the very(prenominal) symptoms. Nevertheless, a careful review of current literature on the subject reveals that there are some very real, qualitative differences between Aspergers and HFA. In fact, it can be argued that the core symptoms of these disorders are diametrically opposed - that the main indicators of the disorders are mutually exclusive. Should someone with AS be wron g diagnosed with HFA, or vice versa, the repercussions for sufferers of these conditions could be significant. The appropriate intercession for HFA will not be exactly the same as that for AS. To treat the conditions as one and the same would risk putting AS sufferers at a severe disadvantage in their development, as AS requires unique learning supports and social coaching that differs from the treatment required for HFA.According to Lyons and Fitzgerald (2004), autism and Asperger syndrome are both recognized neuro-developmental disorders that are defined primarily in behavioural terms. Autistic disorder and Aspergers are both pronounced by qualitative impairment in social interaction (Tucker, 2006, par. 11). Symptoms of such impairment include difficulty with non-verbal social cues such as facial expression, luggage compartment language, and gestures difficulty developing appropriate peer relationships failure to spontaneously seek others to share interests or achievements and/o r lack of social or emotional reciprocality (par. 11). Both disorders are also marked by restricted, repetitive, and stereotyped patterns of behavior, interests, and activities, including abnormally intense preoccupation with stereotyped or restricted patterns of interest obsessive tenderness to nonfunctional routines or rituals stereotyped and repetitive motor mannerisms or persistent preoccupation with parts of objects (par. 12). Those with two of the social interaction impairment symptoms and one of behavioral symptoms listed above may be clinically diagnosed with Aspergers Syndrome, characterized by autistic social dysfunction and idiosyncratic interests, in the presence of normal intelligence (Ghaziuddin & Mountain-Kimchi, 2004).Dissanayake (2004) maintains that HFA and AS are qualitatively very similar disorders. She states that the findings from the comparative literature are either marked by an absence of differences or by only quantitative differences between the two group s, such that most symptoms, associated features and biological indices are either shared or overlapping to some degree (par. 3). Furthermore, any differences between the two disorders give-up the ghost less apparent with age. Specifically, it has been found that children with these disorders show greater differences in the manifestation of impairments in social interaction, communication, motor skills and repetitive behaviours (sic) during the early childhood years than during set childhood and adolescence. The main direction of difference during the preschool years is that those with autism

The Brand Effect Assignment Example | Topics and Well Written Essays - 750 words

The Brand Effect - Assignment ExampleAll these factors must cast congruence or compatibility in order for them to work towards the success of the business.There are five dimensions to a framework of a particular brand. These are sincerity, excitement, competence, sophism and ruggedness (Achouri, Bouslama 2010). The consumer is then able to feel confident about a particular harvest-tide that meets these qualities. This is because he or she can connect emotionally with the product as well. They will therefore, have to rely on brand equity in order to establish the consumer personality of the product produced by a accustomed company (Punyatoya 2011). According to (Fetscherin, Heinrich 2014), there are four quadrants that determine the attachment of a consumer to a product. In the first, the product is highly functional but a small emotional link to the consumer. In such a case, the customer invests in the brand functionally. It is non price sensitive.The second quadrant has consum ers who have some(prenominal) a high functional and emotional connection to the product. The third quadrant has consumers who both low functional and emotional connections to a product. This means that they are not necessarily loyal to a particular brand. In the fourth quadrant, there are consumers who have a low functional but high connection to the product emotionally. This means that the brand does not possess all the qualities consumer is searching for, but they just use it as it emotionally compensates for missing factors. These factors are examine for a business-marketing manager to come up with the appropriate marketing skills. (Punyatoya 2011) Illustrates that a little investment product will require a significant contributor to attract the attention of customers and convince them more effectively to accept the brand. On the other hand, a high involvement product simply requires a strong argument in order to get a hold of the