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Nakyinsige, K.,Fatimah, A.B.,Aghwan, Z.A.,Zulkifli, I.,Goh, Y.M.,Sazili, A.Q. Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.3
A study was conducted to compare the effect of halal slaughter without stunning and gas stun killing followed by bleeding on residual blood content and storage stability of rabbit meat. Eighty male New Zealand white rabbits were divided into two groups of 40 animals each and subjected to either halal slaughter without stunning (HS) or gas stun-kill (GK). The volume of blood lost during exsanguination was measured. Residual blood was further quantified by determination of haemoglobin content in Longissimus lumborum (LL) muscle. Storage stability of the meat was evaluated by microbiological analysis and measuring lipid oxidation in terms of thiobarbituric acid reactive substances (TBARS). HS resulted in significantly higher blood loss than GK. HS had significantly lower residual haemoglobin in LL muscle compared to GK. Slaughter method had no effect on rabbit meat lipid oxidation at 0, 1, and 3 d postmortem. However, at 5 and 8 days of storage at $4^{\circ}C$, significant differences (p<0.05) were found, with meat from the GK group exhibiting significantly higher levels of MDA than that from HS. At day 3, greater growth of Pseudomonas aeroginosa and E. coli were observed in the GK group (p<0.05) with B. thermosphacta and total aerobic counts remained unaffected by slaughter method. At days 5 and 7 postmortem, bacterial counts for all tested microbes were affected by slaughter method, with GK exhibiting significantly higher growth than HS. It can be concluded that slaughter method can affect keeping quality of rabbit meat, and HS may be a favourable option compared to GK due to high bleed out.
Some aspects of conduction in metallic single-wall carbon nanotubes
Goh, S.K.,Kaiser, A.B.,Lee, S.W.,Lee, D.S.,Yu, H.Y.,Park, Y.W. Elsevier 2006 CURRENT APPLIED PHYSICS Vol.6 No.5
<P><B>Abstract</B></P><P>The current–voltage characteristics of several different types of material with partially metallic conductivity show similar nonlinearities. We analyze the current–voltage characteristics and their temperature dependence for metallic single-wall carbon nanotubes (SWNTs) suspended between electrodes and show their consistency with calculations for fluctuation-assisted tunnelling and activated conduction. We also make a comparison with earlier data on the current–voltage characteristics of networks of SWNTs and a SWNT rope.</P>
Evolution of scale-free random graphs: Potts model formulation
Lee, D.-S.,Goh, K.-I.,Kahng, B.,Kim, D. Elsevier 2004 Nuclear physics, B Vol.696 No.3
<P><B>Abstract</B></P><P>We study the bond percolation problem in random graphs of <I>N</I> weighted vertices, where each vertex <I>i</I> has a prescribed weight <I>P</I><SUB><I>i</I></SUB> and an edge can connect vertices <I>i</I> and <I>j</I> with rate <I>P</I><SUB><I>i</I></SUB><I>P</I><SUB><I>j</I></SUB>. The problem is solved by the <I>q</I>→1 limit of the <I>q</I>-state Potts model with inhomogeneous interactions for all pairs of spins. We apply this approach to the static model having <I>P</I><SUB><I>i</I></SUB>∝<I>i</I><SUP>−<I>μ</I></SUP> (0<<I>μ</I><1) so that the resulting graph is scale-free with the degree exponent <I>λ</I>=1+1/<I>μ</I>. The number of loops as well as the giant cluster size and the mean cluster size are obtained in the thermodynamic limit as a function of the edge density, and their associated critical exponents are also obtained. Finite-size scaling behaviors are derived using the largest cluster size in the critical regime, which is calculated from the cluster size distribution, and checked against numerical simulation results. We find that the process of forming the giant cluster is qualitatively different between the cases of <I>λ</I>>3 and 2<<I>λ</I><3. While for the former, the giant cluster forms abruptly at the percolation transition, for the latter, however, the formation of the giant cluster is gradual and the mean cluster size for finite <I>N</I> shows double peaks.</P>
Nakyinsige, K.,Sazili, A.Q.,Aghwan, Z.A.,Zulkifli, I.,Goh, Y.M.,Fatimah, A.B. Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.6
Unlike Europe (particularly, Italy and Spain), where a number of studies have been conducted on the stressful effects of transport on rabbit welfare, few studies have been conducted on transportation of rabbits under hot, humid tropical conditions experienced in countries like Malaysia. We studied the effects of transportation in hot humid tropical conditions of Malaysia on physiometabolic changes in New Zealand white rabbits. Eighty experimental animals were divided into two groups of 40 bucks each and transported for either 3 or 1 h. Transportation caused a significant upsurge of aspartate aminotransferase, alanine aminotransferase and creatine kinase activities (p<0.001) though did not significantly affect lactate dehydrogenase (LDH) activity (p = 0.0706). Both transportation periods caused elevation in plasma glucose levels, lactic acidosis and dehydration as evidenced through elevated packed cell volume and plasma protein concentration. It was concluded that regardless of the duration, transport of rabbits under hot humid tropical conditions, resulted in heat distress since the rabbits showed hyperglycemia, hypercalcemia, lactacidemia, lymphocytopenia, dehydration and increase in blood enzyme activities.
Some aspects of conduction in metallic single-wall carbon nanotubes
S.K. Goh,A.B. Kaiser,이상욱,이동수,H.Y. Yu,박영우 한국물리학회 2006 Current Applied Physics Vol.6 No.5
The currentvoltage characteristics of several dierent types of material with partially metallic conductivity show similar nonlin-earities. We analyze the currentvoltage characteristics and their temperature dependence for metallic single-wall carbon nanotubes(SWNTs) suspended between electrodes and show their consistency with calculations for uctuation-assisted tunnelling and acti-vated conduction. We also make a comparison with earlier data on the currentvoltage characteristics of networks of SWNTsand a SWNT rope.
천정봉(J. B. Chun),이동광(D. K. Lee),공정식(J. S. Kong),고민수(M. S. Goh),이응혁(E. H. Lee) 한국재활복지공학회 2011 한국재활복지공학회 학술대회논문집 Vol.2011 No.11
최근에 고령자인구의 증가로 인해 고령자를 위한 보행보조로봇에 대한 관심이 증가되고 있다. 그러나 대부분의 경우 동력이 없는 시스템으로 경사 등의 공간에서 취약성을 가지고 있다. 이에 동력형 보행보조로봇에 대한 관심이 증가되고 있으나, 대부분의 경우 보행보조로봇 조종이 여의치 않다. 이에 본 논문에서는 사용자의 조작의지를 파악하고 조작이 쉽고 간결한 시스템을 도입하고 이를 기초로 보행자의 안정적인 구동을 수행할 수 있도록 하였다. 고령자의 의지력은 FSR 센서를 이용하여 파악하고, 이를 기초로 하여 고령자가 이용하고자 하는 이동 방향과 이동속도 데이터를 계산하여, 보행보조로봇의 차량 속도와 방향에 대해 구동 바퀴의 차동구동을 통해 사용자의 의지에 맞춰 구동할 수 있도록 하였다. 이를 통해 사용자의 이동하려는 의지에 대해 안정적으로 차량을 이동시킬 수 있도록 보행 시스템을 구축하였다.
Branching process approach for Boolean bipartite networks of metabolic reactions.
Lee, Deokjae,Goh, K-I,Kahng, B Published by the American Physical Society through 2012 Physical review. E, Statistical, nonlinear, and so Vol.86 No.2
<P>The branching process (BP) approach has been successful in explaining the avalanche dynamics in complex networks. However, its applications are mainly focused on unipartite networks, in which all nodes are of the same type. Here, motivated by a need to understand avalanche dynamics in metabolic networks, we extend the BP approach to a particular bipartite network composed of Boolean AND and OR logic gates. We reduce the bipartite network into a unipartite network by integrating out OR gates and obtain the effective branching ratio for the remaining AND gates. Then the standard BP approach is applied to the reduced network, and the avalanche-size distribution is obtained. We test the BP results with simulations on the model networks and two microbial metabolic networks, demonstrating the usefulness of the BP approach.</P>
Kwon, D. K.,Goh, Y.,Son, D.,Kim, B. H.,Bae, H.,Perini, S.,Lanagan, M. Springer Science + Business Media 2016 Journal of electronic materials Vol.45 No.1
<P>A sol-gel-derived powder synthesis method has been used to prepare BaTiO3-NaNbO3 (BT-NN) solid-solution ceramic samples with various compositions. Fine and homogeneous complex perovskite ceramics were obtained at lower processing temperatures than used in conventional solid-state processing. The ferroelectric and relaxor ferroelectric properties of the sol-gel-synthesized (1 - x)BaTiO3-xNaNbO(3) [(1 - x)BT-xNN] ceramics in the wide composition range of 0 < x a parts per thousand currency sign 0.7 were extensively studied. Structural and dielectric characterization results revealed that a low level of NN addition (x = 0.04) to BT is sufficient to cause a continuous relaxor-to-ferroelectric transition, and the relaxor behavior was consistently observed at compositions with high NN content up to x = 0.7. A number of relaxor parameters including the Curie temperature, Burns temperature, freezing temperature, gamma, diffuseness parameter (delta), and activation energy were determined from the temperature and frequency dependency of the real part of the dielectric permittivity for various BT-NN compositions using the Curie-Weiss law and Vogel-Fulcher relationship. The systematic changes of these parameters with respect to composition indicate that a continuous crossover between BT-based relaxor and NN-based relaxor occurs at a composition near x = 0.4.</P>