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X-선 회절을 이용한 SS41불림재와 M.E.F.복합조직강의 ΔK 및 K_max 추정에 관한 연구
김득진,조용배,주원식,임만배 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.1
This study verified the relationship between fracture mechanics parameters(ΔK, K_max) and X-ray parameters(σ_r, B) for normalized SS41 steel with homogeneous crystal structure and M.E.F. dual phase steel. The fatigue crack propagation test were carried out and X-ray diffraction technique according to crack length direction was applied to fatigue fractured surface. Residual stress, σ_r were independent on stress ratio(R=0.1, 0.5) by arrangement of ΔK and half-value breadth, B were independent by arrangement of K_max. The equation of σ_r-ΔK and B-K_max were established by the experimental datas. Therefore, fracture mechanics parameters could be estimated by the measurement of X-ray parameters.
Li, H.,Kilpelä,inen, T. O.,Liu, C.,Zhu, J.,Liu, Y.,Hu, C.,Yang, Z.,Zhang, W.,Bao, W.,Cha, S.,Wu, Y.,Yang, T.,Sekine, A.,Choi, B. Y.,Yajnik, C. S.,Zhou, D.,Takeuchi, F.,Yamamoto, K.,Chan, J. C.,Man Springer-Verlag 2012 Diabetologia Vol.55 No.4
<P><B>Aims/hypothesis</B></P><P><I>FTO</I> harbours the strongest known obesity-susceptibility locus in Europeans. While there is growing evidence for a role for <I>FTO</I> in obesity risk in Asians, its association with type 2 diabetes, independently of BMI, remains inconsistent. To test whether there is an association of the <I>FTO</I> locus with obesity and type 2 diabetes, we conducted a meta-analysis of 32 populations including 96,551 East and South Asians.</P><P><B>Methods</B></P><P>All studies published on the association between <I>FTO</I>-rs9939609 (or proxy [<I>r</I><SUP>2</SUP> > 0.98]) and BMI, obesity or type 2 diabetes in East or South Asians were invited. Each study group analysed their data according to a standardised analysis plan. Association with type 2 diabetes was also adjusted for BMI. Random-effects meta-analyses were performed to pool all effect sizes.</P><P><B>Results</B></P><P>The <I>FTO</I>-rs9939609 minor allele increased risk of obesity by 1.25-fold/allele (<I>p</I> = 9.0 × 10<SUP>−19</SUP>), overweight by 1.13-fold/allele (<I>p</I> = 1.0 × 10<SUP>−11</SUP>) and type 2 diabetes by 1.15-fold/allele (<I>p</I> = 5.5 × 10<SUP>−8</SUP>). The association with type 2 diabetes was attenuated after adjustment for BMI (OR 1.10-fold/allele, <I>p</I> = 6.6 × 10<SUP>−5</SUP>). The <I>FTO</I>-rs9939609 minor allele increased BMI by 0.26 kg/m<SUP>2</SUP> per allele (<I>p</I> = 2.8 × 10<SUP>−17</SUP>), WHR by 0.003/allele (<I>p</I> = 1.2 × 10<SUP>−6</SUP>), and body fat percentage by 0.31%/allele (<I>p</I> = 0.0005). Associations were similar using dominant models. While the minor allele is less common in East Asians (12–20%) than South Asians (30–33%), the effect of <I>FTO</I> variation on obesity-related traits and type 2 diabetes was similar in the two populations.</P><P><B>Conclusions/interpretation</B></P><P><I>FTO</I> is associated with increased risk of obesity and type 2 diabetes, with effect sizes similar in East and South Asians and similar to those observed in Europeans. Furthermore, <I>FTO</I> is also associated with type 2 diabetes independently of BMI.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1007/s00125-011-2370-7) contains peer-reviewed but unedited supplementary material, which is available to authorised users.</P>
Lee, K B,Jong Man Lee,Tae Soon Park,Sang Han Lee IEEE 2010 IEEE transactions on nuclear science Vol.57 No.5
<P>We developed a new 4πβ (LS)-γ coincidence counting system to be used for radionuclide standardization. The liquid scintillation detector used in this system enables the easy preparation of sources without self-absorption. A special β- β coincidence technique is implemented to suppress large thermal and electronic noises, resulting in a higher coincidence efficiency and reduced uncertainty in the measurements of low-energy beta-emitting radionuclides. The system is commissioned with the activity measurement of <SUP>60</SUP>Co. The measured activity is derived with 90% efficiency for the β-ray detection.</P>
KO, Sang-Hwan,LEE, Geun-Shik,VO, Thuy T. B.,JUNG, Eui-Man,CHOI, Kyung-Chul,CHEUNG, Ki-Wha,KIM, Jae Wha,PARK, Jong-Gil,OH, Goo Taeg,JEUNG, Eui-Bae Society for Reproduction and Development 2009 Journal of Reproduction and Development Vol.55 No.2
<P>The effect(s) of oral calcium and vitamin D<SUB>3</SUB> were examined on the expression of duodenal and renal active calcium transport genes, i.e., calbindin-D9k (<I>CaBP-9k</I>) and calbindin-D28k (<I>CaBP-28k</I>), transient receptor potential cation channels (<I>TRPV5</I> and <I>TRPV6</I>), Na<SUP>+</SUP>/Ca<SUP>2+</SUP> exchanger 1 (<I>NCX1</I>) and plasma membrane calcium ATPase 1b (<I>PMCA1b</I>), in <I>CaBP-9k</I> KO mice. Wild-type (WT) and KO mice were provided with calcium and vitamin D<SUB>3</SUB>-deficient diets for 10 weeks. The deficient diet significantly decreased body weights compared with the normal diet groups. The serum calcium concentration of the WT mice was decreased by the deficient diet but was unchanged in the KO mice. The deficient diet significantly increased duodenal transcription of <I>CaBP-9k</I> and <I>TRPV6</I> in the WT mice, but no alteration was observed in the KO mice. In the kidney, the deficient diet significantly increased renal transcripts of <I>CaBP-9k</I>, <I>TRPV6</I>, <I>PMCA1b</I>, <I>CaBP-28k</I> and <I>TRPV5</I> in the WT mice but did not alter calcium-relating genes in the KO mice. Two potential mediators of calcium-processing genes, vitamin D receptor (VDR) and parathyroid hormone receptor (PTHR), have been suggested to be useful for elucidating these differential regulations in the calcium-related genes of the KO mice. Expression of VDR was not significantly affected by diet or the KO mutation. Renal <I>PTHR</I> mRNA levels were reduced by the diet, and reduced expression was also seen in the KO mice given the normal diet. Taken together, these results suggest that the active calcium transporting genes in KO mice may have resistance to the deficiency diet of calcium and vitamin D<SUB>3</SUB>.</P>
Formation mechanism of self-organized nano-ripples on quartz surface using femtosecond laser pulses
Ahsan, Md. Shamim,Lee, Man Seop,Hasan, Mohammad Khairul,Noh, Young-Chul,Sohn, Ik-Bu,Ahmed, Farid,Jun, Martin B.G. Elsevier 2015 OPTIK -STUTTGART- Vol.126 No.24
<P><B>Abstract</B></P> <P>This article demonstrates the formation of self-organized nano-ripples on a quartz surface by irradiation of femtosecond laser pulses. Self-oriented nano-ripples are printed on the quartz surface by controlling various laser parameters: average pulse energy, pulse width, and number of laser pulses on each irradiated spot. We validate that the direction of the self-organized nano-ripples are oriented perpendicularly to the laser polarization direction. We also investigate and analyze the dependency of nano-ripples period on various laser parameters including the pulse energy, number of laser pulses, and pulse width. The nano-ripples show increasing trend with the increase of laser energy and pulse width, whereas show decreasing trend with the increase of irradiated laser pulses. We also explain, qualitatively, the formation mechanism of the self-organized nano-ripples on quartz surface.</P>
Man, Z.X.,An, N.B.,Xia, Y.J.,Kim, J. Academic Press 2014 Annals of physics Vol.351 No.-
In combination with the theories of open system and quantum recovering measurement, we propose a quantum state transfer scheme using spin chains by performing two sequential operations: a projective measurement on the spins of 'environment' followed by suitably designed quantum recovering measurements on the spins of interest. The scheme allows perfect transfer of arbitrary multispin states through multiple parallel spin chains with finite probability. Our scheme is universal in the sense that it is state-independent and applicable to any model possessing spin-spin interactions. We also present possible methods to implement the required measurements taking into account the current experimental technologies. As applications, we consider two typical models for which the probabilities of perfect state transfer are found to be reasonably high at optimally chosen moments during the time evolution.