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First spin-parity constraint of the 306 keV resonance in Cl35 for nova nucleosynthesis
Chipps, K. A.,Pain, S. D.,Kozub, R. L.,Bardayan, D. W.,Cizewski, J. A.,Chae, K. Y.,Liang, J. F.,Matei, C.,Moazen, B. H.,Nesaraja, C. D.,O'Malley, P. D.,Peters, W. A.,Pittman, S. T.,Schmitt, K. T.,Smit American Physical Society 2017 Physical review. C Vol.95 No.4
<P>Of particular interest in astrophysics is the S-34(p,gamma) Cl-35 reaction, which serves as a stepping stone in thermonuclear runaway reaction chains during a nova explosion. Though the isotopes involved are all stable, the reaction rate of this significant step is not well known, due to a lack of experimental spectroscopic information on states within the Gamow window above the proton separation threshold of Cl-35. Measurements of level spins and parities provide input for the calculation of resonance strengths, which ultimately determine the astrophysical reaction rate of the S-34(p,gamma)Cl-35 proton capture reaction. By performing the Cl-37( p,t)Cl-35 reaction in normal kinematics at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory, we have conducted a study of the region of astrophysical interest in Cl-35, and have made the first-ever constraint on the spin and parity assignment for a level at 6677 +/- 15 keV (E-r = 306 keV), inside the Gamow window for novae.</P>
Son, J.,Min, N.Y.,Choi, J.-H.,Ko, Y.J.,Liang, W.,Rhee, S.,Lee, K.-H. S. Karger AG 2012 Cytogenetic and genome research Vol.138 No.1
<P>Abstract</P><P>Mammalian dosage compensation requires silencing of one of the two X chromosomes in females and is controlled by the X inactivation center (Xic). Xic contains many of the regulatory elements for the mutual interplay of X-inactive specific transcript <I>(Xist)</I> and <I>Tsix</I>, the antisense counterpart of <I>Xist</I>. The regulatory elements control X chromosome inactivation (XCI) via the formation of DNA-DNA and DNA-protein complexes with <I>cis</I>- and <I>trans</I>-acting factors. However, the process-dependent regulation of <I>Xist/Tsix</I> by these elements in each XCI process remains largely unknown. In this study, a 6-thioguanine-resistant female F<SUB>1</SUB> hybrid mouse cell line (designated HOBMSKI2) was constructed from a cross between a female HPRT-deficient transgenic mouse (designated BM3) and a male wild type <I>Mus spretus</I> mouse (designated MS), which enabled the direct discrimination of both allele-specific expression of X-linked genes and allele-specific binding of proteins associated with XCI due to DNA polymorphisms between BM3 and MS. Using this cell line, we found that <I>Tsix</I> on the active X chromosome (Xa) was not expressed in somatic cells despite the fact that CTCF, which ensures <I>Tsix</I> expression in embryonic stem cells, was still bound to the 5′ end of <I>Tsix</I> on Xa, implying that CTCF may function differently during each XCI process and its <I>trans</I>-activating activity for <I>Tsix</I> expression may be lost in the maintenance process. In addition, the monoallelic expression of <I>Tsix</I> on Xa was inhibited by epigenetic modification of the chromatin in the maintenance process, which was mediated by protein complexes recruited by MeCP2. The results indicate the value of HOBMSKI2 in directly detecting the allele-specific binding of CTCF and MeCP2 to the 5′ end of <I>Tsix</I>. The HOBMSKI2 mouse line is a versatile and useful resource for studying the molecular mechanism of the XCI process.</P><P>Copyright © 2012 S. Karger AG, Basel</P>
Yang, C.S.,Lee, J.S.,Rodgers, M.,Min, C.K.,Lee, J.Y.,Kim, H.,Lee, K.H.,Kim, C.J.,Oh, B.,Zandi, E.,Yue, Z.,Kramnik, I.,Liang, C.,Jung, Jae U. Elsevier Inc., Cell Press Imprint 2012 Cell host & microbe Vol.11 No.3
Phagocytosis and autophagy are two important and related arms of the host's first-line defense against microbial invasion. Rubicon is a RUN domain containing cysteine-rich protein that functions as part of a Beclin-1-Vps34-containing autophagy complex. We report that Rubicon is also an essential, positive regulator of the NADPH oxidase complex. Upon microbial infection or Toll-like-receptor 2 (TLR2) activation, Rubicon interacts with the p22phox subunit of the NADPH oxidase complex, facilitating its phagosomal trafficking to induce a burst of reactive oxygen species (ROS) and inflammatory cytokines. Consequently, ectopic expression or depletion of Rubicon profoundly affected ROS, inflammatory cytokine production, and subsequent antimicrobial activity. Rubicon's actions in autophagy and in the NADPH oxidase complex are functionally and genetically separable, indicating that Rubicon functions in two ancient innate immune machineries, autophagy and phagocytosis, depending on the environmental stimulus. Rubicon may thus be pivotal to generating an optimal intracellular immune response against microbial infection.
소형 근거리 이동용 전기자동차(NEV)용 10㎾급 BLAC 구동인버터 개발
이용균(Y.K LEE),김은경(E.K KIM),김선일(S.I KIM),홍찬희(C.H Hong),방량(Liang Fang),목형수(H.S Mok) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
This paper deals with 10㎾ BLAC drive inverter for neighborhood electric vehicle. First it introduces about hardware structure of inverter driven using 72volts battery. Then it explains motor control algorithm. Also performance of BLAC drive system is confirmed through experiments.
Continued Emissions of the Ozone-Depleting Substance Carbon Tetrachloride From Eastern Asia
Lunt, M. F.,Park, S.,Li, S.,Henne, S.,Manning, A. J.,Ganesan, A. L.,Simpson, I. J.,Blake, D. R.,Liang, Q.,O'Doherty, S.,Harth, C. M.,Mü,hle, J.,Salameh, P. K.,Weiss, R. F.,Krummel, P. B.,Fraser, P American Geophysical Union 2018 Geophysical research letters Vol.45 No.20