Aluminum foam Essay Example | Topics and Well Written Essays - 750 words

Aluminum foam - Essay Example The tortuous path and the controlled pressure drop across the foam ensure that the necessary micro-turbulent mixing required for proper mixing of gases is achieved. Thus aluminum foam is used as gas diffusers and mixers. In addition, these foams have found application as liquid/gas separator as a result of the three-dimensional continuous ligament, which facilitate the complete removal of entrained liquids. The continuously connected aluminum structure ensures that particles are not generated within the liquid/gas generator. As energy and impact absorbent (ERG; MIT) Aluminum foam can act as energy and impact absorbent when the density and alloy of the foam are varied, provided the foam’s isotropic properties gives identical response without regards to impact angle. Indeed, it has been found that a high strength-to-weight ratio performs better and provides greater shear strength than honeycomb of the same density. As compact heat exchangers (ERG) The excellent heat conducting p roperty of aluminum combined with the high surface area to volume ratio as well as the ligament structure of the foam makes aluminum foam good compact heat exchangers. Indeed, the high surface area to volume ratio makes for more compact designs, while thorough mixing and efficient scrubbing of the heat exchange surfaces is provided by the ligament structure. ... Other applications of aluminum foams (ERG) Their cellular nature mimics those of cancerous bone materials found in the body. Thus aluminum foam is used in bio-mimicking in orthopedic research and testing. In addition, the foams can be incorporated into systems as spark and flame arrestor as a result of their low-pressure drops properties. Furthermore, these foams are highly desirable for fuel cell applications due to their open structures. Indeed, the foams have being used in this regards by military, emergency, industrial and recreational personnel. As mentioned above, aluminum is reputed for its excellent heat as well as electricity conducting properties. These properties combined with the foam’s cellular nature has made it an excellent heat exchange media and chemical support matrix for atmospheric carbon (IV) oxide control system on the space shuttle and International Space Station. Unlike the amine powder granules that can also provide similar chemical support for atmosph eric carbon (IV) oxide, but require heat to initiate the process, the aluminum foam does not require any heat to kick off the reaction. Thus the foam is more efficient and has faster response rate. Works Cited ERG. ERG Materials and Aerospace Corp. 2011. 08 May 2011 . MIT. Technology Review. 11 July 2006. 08 May 2011

Graduate Employability Essay Example | Topics and Well Written Essays - 2000 words

Graduate Employability - Essay Example The Department of Trade also ranked Systems Software among the thirty fastest growing professions; Systems Software will grow by 30.4 percent by the year 2018 (Scott, 2012). Trading activities are going international with the increased rate of globalization. Nowadays, a trader does not have to travel to a foreign country in order to purchase merchandise or personal goods. Online orders and payments are sufficient to do financial transactions and transport goods to the buyer. Cross-border traders, therefore, require system developers and administrators to ensure that the transaction systems are updated. The next decade will be characterised three out of four new science and engineering jobs being in computing. For example, two hundred and ninety-five thousand and two hundred jobs (representing 27 percent of the new STEM jobs) will be in software engineering (Scott, 2012). STEM further projects that the number of jobs in Network Analysis and Administration will exceed the number of vac ancies in traditional engineering by two hundred and thirty-five thousand, and seven hundred (Smeding, 2012). Basic computer literacy such as Microsoft Word, PowerPoint, Access and Excel will not enable a prospective employee to secure these jobs. This is because these professional occupations further knowledge and skills gained through the study of Computer Science, Software Engineering and Information Systems. 1.1.1 Computer Science Computer Science will expose the students and job seekers to practical approaches of computation and its applications. Computer Science enables learners of IT/Computing to study the feasibility, mechanization, expression and structure of computer algorithms. The computer algorithms underlie storage, communication, acquisition, representing, and accessing... The primary focus of this essay is to provide insights into the needs and perceptions of graduate employers in the Information Technology/Computing sector. This will be achieved by a close study of the jobs available, the requirements for employment, responsibilities of the employees and their remunerations. The report also covers the necessity of various skills and abilities required by employers, the level of graduate education required to fill the vacant positions, the challenges that companies face in recruiting graduates and views on how graduates can enhance their employability skills. The researcher mentions that the reader of the report will be able to identify the areas that are buoyant or depressed in IT and Computing; the information will be crucial to prospective employees and current students of Information Technology/Computing once they begin searching for jobs. The researcher of this report also focused on the employability skills of people aspiring to pursue courses i n Information Technology/Computing. The esssay considered the general course of computer engineering, and the skills that employers require to hire candidates for computing-related jobs. Information Technology is a broad field of study that encompasses Computer Science, Software Engineering and Information Systems. In conclusion, the researcher also included in this report the descriptions of the occupations, that fall under Computer Science and the salaries that professionals in IT/Computing sector earn.