Archives-January 2014

In this article, we have discussed the effect of changes in acceleration of gravity on the amount of human awareness. The concentration of research is on the outcomes of the brain which effectuates the loss of consciousness when the acceleration of gravity is changed (G-LOC). G-LOC, pronounced 'GEE-lock', is the abbreviation of G-force induced Loss Of Consciousness, a term generally used in aerospace physiology to describe a loss of consciousness occurring from excessive and sustained g-forces draining blood away from the brain causing cerebral hypoxia. The condition is most likely to affect pilots of high performance fighter and aerobatic aircraft or astronauts but is possible on some extreme amusement park rides. G-LOC incidents have caused fatal accidents in high performance aircraft capable of sustaining high g for extended periods. High-G training for pilots of high performance aircraft or spacecraft often includes ground training for G-LOC in special centrifuges, with some profiles exposing pilots to 9 gs for a sustained period. Experiments carried out on people all in good condition, revealed that they underwent different sofferings, both physically and mentally, when exposed to accelerated movements.

This study aims to identify the pedagogical practices of the teacher trainees of Design and Technology option in conducting lessons in mock teaching practice in order for the trainees to become excellent teachers. In addition, this study aims to see whether there is a relationship between the trainee teachers' perceptions to the mock teaching practices experienced during teaching in schools. The samples of this study are 81 teacher trainees taking Design and Technology option of Institut Pendidikan Guru Kampus Tun Hussein Onn, Batu Pahat, Johor January 2010 intake . The study was conducted through a quantitative approach using questionnaires. The results showed that the level of the teacher trainees’ pedagogical practices is medium in the teaching and learning process . The results also indicated positive perceptions of trainee teachers toward the third phase mock teaching practice gives a very good exposure.

In this work, an experimental study to obtain the fatigue endurance limit for an aluminum alloy7075-T651 were carried out at stress ratio R=-1 and rotary bending tests. The fatigue tests were performed at RT and 250 °C in order to establish the S–N curve equations. The fatigue endurance limits for the alloy at different temperature conditions were calculated at 107 cycles from the empirical S-N curve equations. It was found that the fatigue endurance limit decrease with increasing the temperature. Also The effect of shot peening on the rotating bending fatigue behavior of 7075-T651 was studied. The fatigue strength of specimens tested at250oC at 107cycles is reduced about 12%. The fatigue strength of specimens tested at250oC prior to (10 min.) SP at 107cycles is increased by 7.2%. The roughness of the samples increases after shot peening which leads to the deterioration of the fatigue strength, because the surface of the samples become prone to nucleation of cracks.

Titles are multi-layered and functional in nature. In the recent years, the academic field of titrology has paid particular attention to the analysis of titles from different scopes, but research on the translation of titles has been very limited, especially in the context of Persian language. This study has addressed structural differences and generic peculiarities of book titles and investigates the translation methods adopted by Iranian translators. To this aim 180 English book titles and their translations were analyzed according to the methodology proposed by Nord (1995) and their translation strategy is categorized according to Vinay-Darbelnet's model of translation strategies. The results showed Iranian translators' preference of direct translation methods, while indirect strategies were applied where generic conventions and cultural differences imprinted structural and lexical shifts.

Present study aims at exploring the phenomenon of graffiti and its presence in Pakistan. It also sets to investigate the frequency of different themes exhibited through graffiti and their corresponding relationship to socio-cultural and religious ideologies and attitudes of inhabitants of this part of the world. For given purpose the historical city of Lahore, which is also considered the hub of culture and education in country, was chosen as this practice is found in profusion there especially in areas under consideration locally named as Model Town, Centre Point, Hussain Chowk, etc. Graffiti is treated as a pliant feature of contemporary metropolitan setting and an ever-trendy researchable issue in academic research. Our contention here is not to label graffiti as a social territorial crime or a rebellious facet on the part of graffiti artists rather a social behavior and its relation to existing religious beliefs and socio-cultural norms of existing Pakistani social mosaic.

Heat Exchangers are widely used in many industries, such as chemical, food, air-conditioning system, petrochemical, oil, and thermal power plant. In the air-to-air and air-to-liquid heat exchangers for air-side heat transfer applications, special surfaces are often employed to obtain high rates of heat transfer. One geometry that can be used to enhances heat exchanger performance is a sinusoidally curved wavy passage. Wavy channels are easy to fabricate, and can provide significant heat transfer enhancement in the appropriate Reynolds number regime. This article offers a new method for calculating total heat transfer area in a plate-fin heat exchanger with waviness surfaces. Kays and London presented some experimental data to determine heat transfer area in wavy surfaces, based on the ratio of total heat transfer area / total volume. One of the important weakness of the method presented by Kays and London is calculating total heat transfer area is a chain process and depends on the other thermal properties of the heat exchanger. So, existence of a direct method can be helpful and , of course, a strong tool in optimization process.

In this research, immunoaffinity chromatography was used to purify factor VII from prothrombin complex (PPSB), which contains coagulation factors II, VII, IX and X. For this purpose DEAE-Sephadex and CNBr-activated Sepharose 4B gels were used. Specific activity of factor VII concentrate increased from 0.16 to 55.6 with purification-fold of 347.5 and the amount of activated factor VII (FVIIa) was found higher than PPSB (4.4-fold). Results of electrophoresis on agarose gel indicated higher purity of FVII compared to PPSB and these finding revealed that factor VII migrated as alpha-2 proteins. In order to improve viral safety, solvent-detergent treatment was applied prior to further purification and elimination of tween 80 was nearly complete (2 ?g/ml). Factor VII concentrate is used for patients with factor VII deficiency and also for hemophilia patients with inhibitors.

In today’s competitive business scenario manufacturing industries are under the pressure to reduce cost and cycle time. It is a lean manufacturing concept with a systematic approach to identify and eliminate waste through continuous and sustained improvements by manufacturing the product at the pull of the customer in pursuit of perfection. This paper is to Design and Integrate Assembly Lines ‘A’ and ‘B’ based on ‘Lean Concept’ using MTM/UAS analysis for determine the time and to identify the improvement. The study was carried out in 2 assembly lines in a reputed manufacturing industry. The paper concentrates only on assembly line and where assembly line ‘B’ is to be accommodated into assembly line ‘A’. The main focus of the paper is to study the existing system and designing the new solution based on Lean Line Design concept which would follow the standards of the manufacturing industry.

Entrepreneurship and entrepreneurial culture are receiving an increased amount of attention in both academic research and practice. Entrepreneurship is linked with value creation and, as such, is thought to have a significant impact on economic growth, continuous business renewal, and employment (Tang and Koreas, 2004). Thus, it is apparent why there is also an increased interest in educational programmers designed to encourage entrepreneurship and to provide a better infrastructure for Business start-ups (Vesper and Gartner, 1997). However, despite the high level of activity, there is concern about the effectiveness of such policies (Gibb, 2002). It is quite possible that a better understanding of the factors that influence attitudes towards entrepreneurship and entrepreneurial intent could facilitate the successful development of these initiatives, especially for university students who, in comparison to individuals without university education, are more likely to pursue self-employment that has significant impact on economic growth (Robinson and Sexton, 1994). In large organizations, supporting entrepreneurial behavior at all hierarchal levels for growth and increasing competitive advantages, is necessary. This study contributes to the entrepreneurship literature by introducing emotional intelligence as an additional factor that explains how entrepreneurs perceive their own success. Using survey data from 112 Iranian entrepreneurs, we find that emotionally intelligent entrepreneurs are more likely to judge their entrepreneurial success using the following criteria: employee satisfaction, social responsibility, personal satisfaction, customer satisfaction and business performance. Furthermore, not all EI dimensions are equally relevant to explain the phenomenon. We find that “regulation of emotion in others” seems to be the most important dimension, whereas “emotion in others” seems to be the less relevant one.

The dispersion of bioactive glass, (BG), sample was studied using cetyltrimethylammonium bromide (CTAB). An array of experimental techniques like adsorption, zeta potential and turbidity were used to achieve this goal. Turbidity was used as a parameter to reflect the degree of dispersion where a higher value of turbidity represents higher dispersion efficiency. Dispersion of the BG particles was largely affected by CTAB concentration and the solution pH. Dispersion of the BG particles was increased with increasing of CTAB concentration till the CMC of CTAB is reached. Beyond the CMC , the BG particles become hydrophilic causing a decrease in glass dispersion. On the other hand, dispersion of the BG particles was affected with the solution pH. It was increased with increasing pH till pH 9. At higher pH, dispersion was decreased where the formation of micelles is favored.