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Jayaraj, Rama,Singh, Jagtar,Baxi, Siddhartha,Ramamoorthi, Ramya,Thomas, Mahiban Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.18
Incidence trends of head and neck cancer (HNC) have implications for screening strategies, disease management, guiding health policy making, and are needed to further oral cancer research. This paper aims to describe trends in age-adjusted HNC incidence rates focusing on changes across calendar period between 2007 and 2010 in Australian Northern Territory. Age-adjusted incidence rates of HNC were calculated for 2007-2010 using Northern Territory population based data assembled by Department of Health, Northern Territory Government of Australia. Changes in the HNC rate ratio (RR) and Estimated Annual Percentage Change (EAPC) between 2007-2008, 2008-2009 and 2009-2010 were calculated. A total of 171 HNC patients were recorded by the Northern Territory Department of Health during the time period between 2007 and 2010, out of which, 135 were males (78.9% of male HNC patients) and 36 were females (21.1% of female HNC patients). In conclusion, HNC incidence rate has decreased in the Northern Territory Australian males but remains unchanged in Australian females. High incidences of HNC may be associated with the high smoking rate and high alcohol consumption in the Northern Territory. Continued monitoring of trends in HNC incidence rates is crucial to inform Northern Territory based cancer prevention strategies.
Jayaraj, J.,Kim, K.B.,Ahn, H.S.,Fleury, E. Elsevier 2007 Materials science & engineering. properties, micro Vol.449 No.-
<P><B>Abstract</B></P><P>The Fe<SUB>49</SUB>Cr<SUB>15.3</SUB>Mo<SUB>15</SUB>Y<SUB>2</SUB>C<SUB>15</SUB>B<SUB>3.4</SUB>N<SUB>0.3</SUB> (numbers indicate at.%) amorphous alloy in concentrated HCl solution was found to have a corrosion resistance of at least one order of magnitude higher than the N-free Fe-base amorphous alloy. X-ray photoelectron spectroscopy analyses were performed to understand the corrosion mechanism. It was found that the enrichment of Cr oxide and the presence of MoN nitrides on the surface in the passive layer were at the origin of the high corrosion resistance of the N-containing Fe-base amorphous alloy.</P>
Development of metallic glasses for bipolar plate application
Jayaraj, J.,Kim, Y.C.,Seok, H.K.,Kim, K.B.,Fleury, E. Elsevier 2007 Materials science & engineering. properties, micro Vol.449 No.-
<P><B>Abstract</B></P><P>Fe- and Ni-base amorphous alloys were developed and characterized as alternative bipolar plate materials for polymer electrolyte membrane fuel cell (PEMFC). Lower interfacial contact resistances were obtained for the Fe-base in comparison with Ni-base alloys and particularly the N-containing Fe-base amorphous composition exhibited values almost comparable to that of stainless steel upon high compaction load. Under conditions simulating the anodic and cathodic PEMFC environments, both the Fe- and Ni-base amorphous alloys displayed higher corrosion resistance than stainless steel.</P>
Corrosion studies on Fe-based amorphous alloys in simulated PEM fuel cell environment
Jayaraj, J.,Kim, Y.C.,Kim, K.B.,Seok, H.K.,Fleury, E. Elsevier 2005 SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS Vol.6 No.3
<P><B>Abstract</B></P><P>In this paper, we introduce a novel idea of using metallic amorphous material as a bipolar plate for polymer electrolyte membrane fuel cell (PEMFC). The major requirement of the metallic bipolar plate material is their high corrosion resistance. Owing to its chemical homogeneity, and absence of defects (like grain boundaries, dislocations, etc.), amorphous materials exhibit a combination of attractive properties for bipolar plates such as high corrosion resistance and high strength (∼ about 2GPa). The corrosion properties of Fe<SUB>48</SUB>Cr<SUB>15</SUB>Mo<SUB>14</SUB>Y<SUB>2</SUB>C<SUB>15</SUB>B<SUB>6</SUB> and of a newly developed Fe<SUB>50</SUB>Cr<SUB>18</SUB>Mo<SUB>8</SUB>Al<SUB>2</SUB>Y<SUB>2</SUB>C<SUB>14</SUB>B<SUB>6</SUB> bulk metallic amorphous alloys have been investigated under conditions that simulate the fuel cell environment and are compared with those of a stainless steel. Hydrogen gas and pressurized air were bubbled into a 1M H<SUB>2</SUB>SO<SUB>4</SUB>+2ppm F<SUP>−</SUP> solution at 75°C solution, throughout the experiment to simulate the respective anodic and cathodic PEMFC environment. In comparison to the stainless steel, the Fe<SUB>50</SUB>Cr<SUB>18</SUB>Mo<SUB>8</SUB>Al<SUB>2</SUB>Y<SUB>2</SUB>C<SUB>14</SUB>B<SUB>6</SUB> amorphous alloy displays significantly higher corrosion resistance.</P>
A Review on the Analysis and Experiment of Fluid Flow and Mixing in Micro-Channels
Simon Jayaraj,Sangmo Kang,Yong Kweon Suh 대한기계학회 2007 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.21 No.3
The studies with respect to micro-channels and micro-mixers are expanding in many dimensions. Most significant area of micro-mixer study is the flow analysis in various micro-channel configurations. The flow phenomena in microchannel devices are quite different from that of the macro-scale devices. An attempt is made here to review the important recent literature available in the area of micro-channel flow analysis and mixing. The topics covered include the physics of flow in micro-channels and integrated simulation of the micro-channel flow. Also, the flow control models and electro-kinetically driven micro-channel flows are dealt in detail. A survey of important numerical methods, which are currently popular for micro-channel flow analysis, is carried out. Different options for mixing in microchannels are provided, in sufficient detail.
On Micro-Channel Flow and Mixing : A Review
심슨 자야라즈(Simon Jayaraj),서용권(Yong Kweon Suh) 한국유체기계학회 2006 유체기계 연구개발 발표회 논문집 Vol.- No.-
This paper presents a review of the important recent literature available in the area of micro-channel flow analysis and mixing. The topics covered include the physics of flows in micro-channels and integrated simulation of micro-channel flows. Also the flow control models and electro-kinetically driven micro-channel flows are explained. A comparison of various mixing principles in micro-channels are provided in sufficient detail.