http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
RESULTS OF THERMAL CREEP TEST ON HIGHLY IRRADIATED ZIRLO
Quecedo, M.,Lloret, M.,Conde, J.M.,Alejano, C.,Gago, J.A.,Fernandez, F.J. Korean Nuclear Society 2009 Nuclear Engineering and Technology Vol.41 No.2
This paper presents a thermal creep test under internal pressure and post-test characterization performed on high burnup (68 MWd/kgU) ZIRLO. This research has been done by the CSN, ENRESA, and ENUSA in order to investigate the behavior of advanced cladding materials in contemporary PWRs at higher burnup under dry cask storage conditions. Also, to investigate the hydride reorientation, the cool-down of the samples after the test has been done in a coordinated manner with the internal pressure. The creep results obtained are consistent with the expected behavior from reference CWSR material, Zr-4. During the test, the material retained significant ductility: one specimen leaked during the test at an engineering strain of the tube section of 17%; remarkably, the crack closed due to de-pressurization. Although significant hydride reorientation occurred during the cool-down under pressure, no specimen failed during the cool-down.
RESULTS OF THERMAL CREEP TEST ON HIGHLY IRRADIATED ZIRLO
M. QUECEDO,M. LLORET,J. M. CONDE,C. ALEJANO,J.A. GAGO,F.J. FERNÁNDEZ 한국원자력학회 2009 Nuclear Engineering and Technology Vol.41 No.2
This paper presents a thermal creep test under internal pressure and post-test characterization performed on high burnup (68 MWd/kgU) ZIRLO. This research has been done by the CSN, ENRESA, and ENUSA in order to investigate the behavior of advanced cladding materials in contemporary PWRs at higher burnup under dry cask storage conditions. Also, to investigate the hydride reorientation, the cool-down of the samples after the test has been done in a coordinated manner with the internal pressure. The creep results obtained are consistent with the expected behavior from reference CWSR material, Zr-4. During the test, the material retained significant ductility: one specimen leaked during the test at an engineering strain of the tube section of 17%; remarkably, the crack closed due to de-pressurization. Although significant hydride reorientation occurred during the cool-down under pressure, no specimen failed during the cool-down.
SIR performance evaluation of MB-OFDM UWB system with residual timing offset
Islam, S. M. R.,Ullah, S.,Lloret, J.,Ullah, N.,Kwak, K. S. IET 2015 Electronics letters Vol.51 No.5
<P>Signal-to-interference ratio (SIR) performance of a multiband orthogonal frequency division multiplexing ultra-wideband system with residual timing offset is investigated. To do so, an exact mathematical derivation of the SIR of this system is derived. It becomes obvious that, unlike a cyclic prefixing based system, a zero padding based system is sensitive to residual timing offset.</P>
Huntingtin facilitates polycomb repressive complex 2
Seong, Ihn Sik,Woda, Juliana M.,Song, Ji-Joon,Lloret, Alejandro,Abeyrathne, Priyanka D.,Woo, Caroline J.,Gregory, Gillian,Lee, Jong-Min,Wheeler, Vanessa C.,Walz, Thomas,Kingston, Robert E.,Gusella, Ja Oxford University Press 2010 Human Molecular Genetics Vol.19 No.4
<P>Huntington's disease (HD) is caused by expansion of the polymorphic polyglutamine segment in the huntingtin protein. Full-length huntingtin is thought to be a predominant HEAT repeat α-solenoid, implying a role as a facilitator of macromolecular complexes. Here we have investigated huntingtin's domain structure and potential intersection with epigenetic silencer polycomb repressive complex 2 (PRC2), suggested by shared embryonic deficiency phenotypes. Analysis of a set of full-length recombinant huntingtins, with different polyglutamine regions, demonstrated dramatic conformational flexibility, with an accessible hinge separating two large α-helical domains. Moreover, embryos lacking huntingtin exhibited impaired PRC2 regulation of <I>Hox</I> gene expression, trophoblast giant cell differentiation, paternal X chromosome inactivation and histone H3K27 tri-methylation, while full-length endogenous nuclear huntingtin in wild-type embryoid bodies (EBs) was associated with PRC2 subunits and was detected with trimethylated histone H3K27 at <I>Hoxb9</I>. Supporting a direct stimulatory role, full-length recombinant huntingtin significantly increased the histone H3K27 tri-methylase activity of reconstituted PRC2 <I>in vitro</I>, and structure–function analysis demonstrated that the polyglutamine region augmented full-length huntingtin PRC2 stimulation, both in <I>Hdh</I><SUP><I>Q111</I></SUP> EBs and <I>in vitro</I>, with reconstituted PRC2. Knowledge of full-length huntingtin's α-helical organization and role as a facilitator of the multi-subunit PRC2 complex provides a novel starting point for studying PRC2 regulation, implicates this chromatin repressive complex in a neurodegenerative disorder and sets the stage for further study of huntingtin's molecular function and the impact of its modulatory polyglutamine region.</P>