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China Spallation Neutron Source: Accelerator Design Iterations and R&D Status
J. Wei,C.-D. Deng,C.-H. Wang,C.-T. Shi,H. Sun,H.-F. Ouyang,H.-M. Qu,H.-Y. Dong,J. Li,J. Zhang,J.-S. Cao,J.-Y. Tang,L. Dong,L.-L. Wang,Q. Qin,Q.-B. Wang,S. Wang,S.-N. Fu,S.-X Fang,T. -G. Xu,W. Kang,Y.- 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.I
The China Spallation Neutron Source (CSNS) is a high-power, accelerator-based project currently under preparation. The accelerator complex consists of an H$^-$ ion source, an H$^-$ linac, a rapid-cycling proton synchrotron, and the transport lines. During the past year, the design of most accelerator systems went through major iterations, and initial research and developments was started on the prototyping of several key components.
여대생의 성격 5요인과 이상섭식행동, 우울 및 삶의 만족도의 상관관계
강혜빈,고현진,김성연,박서인,박수연,박은별,유미연,이세인,조영은,Deng Wei,김석선,길민지 이화여자대학교간호학회 2020 이화간호학회지 Vol.- No.54
Purpose: The purpose of this study is to examine the correlations big five personality traits, abnormal eating behavior, depression and, life satisfaction among female university students. Methods: The subjects for this study were female university students in Seoul, Korea. The data were collected from 151 female university students from August 13, 2019 to August 22, 2019. They were asked to fill out Big Five Inventory- Korean version(BFI-K), The Korean Center for Epidemiologic Studies Depression Scale(KCES-D), The Korean Version of Eating Attitudes Test-26(KEAT-26), and, Satisfaction With Life Scale(SWLS). The collected data were analyzed using descriptive statistics, T-test, ANOVA, and Pearson’s correlation coefficient. Result: First, College students’ nervousness among the five personality traits was significantly associated with depression and life satisfaction. Second, College students’ agreeableness among the five personality traits was significantly associated with abnormal eating behavior and life satisfaction. Third, College students’ abnormal eating behaviors were significantly associated with depression. Conclusion: These results suggest that female university students with higher level of nervousness are vulnerable to depression. And, it suggests that female university students with higher level of agreeableness are vulnerable to abnormal eating behavior. The intervention to consider five personality traits may improve mental health among female university students.
Li, L.L.,Hou, Z.P.,Yin, Y.L.,Liu, Y.H.,Hou, D.X.,Zhang, B.,Wu, G.Y.,Kim, S.W.,Fan, M.Z.,Yang, C.B.,Kong, X.F.,Tang, Z.R.,Peng, H.Z.,Deng, D.,Deng, Z.Y.,Xie, M.Y.,Xiong, H.,Kang, P.,Wang, S.X. Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.5
This study was conducted to determine the effects of exogenous zinc-metallothionein (Zn-MT) on anti-oxidative function and pork quality. After feeding a corn-soybean meal-based diet for two weeks, 48 pigs ($Duroc{\times}Landrace{\times}Chinese\;Black Pig$) were assigned randomly to four groups. Pigs in Group 1 were maintained under non-stress conditions, whereas pigs in Groups 2, 3 and 4 were aggressively handled for 25 min to produce stress. Pigs in Groups 1, 2, 3, and 4 received intramuscular administration of saline (control group; CON), 0 (negative control group; NCON), 0.8 (low dose group; LOW), and 1.6 (high dose group; HIGH) mg rabbit liver Zn-MT per kg body weight, respectively. Pigs were slaughtered at 3 and 6 h post-injection. Zn-MT treatment increased (p<0.05) the activities of superoxide dismutase (SOD) and glutathione-peroxidase (GSH-PX) while decreasing the concentration of malondialdehyde (MDA) in liver. These responses were greater (p<0.05) at 6 h than at 3 h post Zn-MT injection. Zn-MT treatment increased (p<0.05) hepatic SOD mRNA levels in a time and dose-dependent manner and decreased (p<0.05) serum glutamate-pyruvate transaminase and lactate dehydrogenase activities (indicators of tissue integrity). Zn-MT administration decreased (p<0.05) lactate concentration and increased (p<0.05) pH and water-holding capacity in the longissimus thorasis meat. Collectively, our results indicate that intramuscular administration of Zn-MT to pre-slaughter stressed pigs improved tissue anti-oxidative ability and meat quality.
Large-Pore Apertures in a Series of Metal-Organic Frameworks
Deng, H.,Grunder, S.,Cordova, K. E.,Valente, C.,Furukawa, H.,Hmadeh, M.,Gandara, F.,Whalley, A. C.,Liu, Z.,Asahina, S.,Kazumori, H.,O'Keeffe, M.,Terasaki, O.,Stoddart, J. F.,Yaghi, O. M. American Association for the Advancement of Scienc 2012 Science Vol.336 No.6084
<P>We report a strategy to expand the pore aperture of metal-organic frameworks (MOFs) into a previously unattained size regime (>32 angstroms). Specifically, the systematic expansion of a well-known MOF structure, MOF-74, from its original link of one phenylene ring (I) to two, three, four, five, six, seven, nine, and eleven (II to XI, respectively), afforded an isoreticular series of MOF-74 structures (termed IRMOF-74-I to XI) with pore apertures ranging from 14 to 98 angstroms. All members of this series have noninterpenetrating structures and exhibit robust architectures, as evidenced by their permanent porosity and high thermal stability (up to 300C). The pore apertures of an oligoethylene glycol-functionalized IRMOF-74-VII and IRMOF-74-IX are large enough for natural proteins to enter the pores.</P>
Atomic-scale flattening of Ni-Cr alloy surfaces by electrochemical passivation treatments
H. Nanjo,N. J. Laycock,H. Deng,I. Ishikawa,N. Sanada 한국물리학회 2004 Current Applied Physics Vol.4 No.2-4
Ni–Cr alloys were electrochemically passivated in sulphuric acid solutions, generating atomically flat oxide surfaces on the terraces of the resulting passive films. High resolution ex-situ scanning tunnelling microscopy revealed a nanocrystalline structure for the passive film, with a tendency for the grain size to decrease with increasing Cr content in the alloy.
Park, H.G.,Deng, Y.,Lee, K.S.,Kim, B.Y.,Yoon, H.J.,Lee, K.Y.,Jin, B.R. 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol. No.
<P>The honeybee inhibitor cysteine knot (ICK) peptide acts as an antifungal peptide and insecticidal venom toxin. However, the ICK peptide from bumblebees has not been characterized. Here, we report the molecular cloning and antifungal activity of a bumblebee (Bombus ignitus) ICK peptide (BiICK). We identified a BiICK that contains an ICK fold. The BiICK was expressed in the epidermis, fat body, and venom gland of B. ignitus worker bees. A 6.7-kDa recombinant BiICK peptide was expressed in baculovirus-infected insect cells. Recombinant BiICK peptides directly bound to Beauveria bassiana, Ascosphaera apis, and Fusarium graminearum, but they did not bind to Escherichia coli, Paenibacillus larvae, or Bacillus thuringiensis. Consistent with this finding, BiICK exhibited antifungal activity against fungi. These results demonstrate that BiICK acts as an antifungal peptide. (C) 2015 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Published by Elsevier B.V. All rights reserved.</P>
Reconstruction of inhomogeneous conductivities via the concept of generalized polarization tensors
Ammari, H.,Deng, Y.,Kang, H.,Lee, H. Gauthier-Villars 2014 Annales de l'Institut Henri Poincaré. Analyse non Vol.31 No.5
This paper extends the concept of generalized polarization tensors (GPTs), which was previously defined for inclusions with homogeneous conductivities, to inhomogeneous conductivity inclusions. We begin by giving two slightly different but equivalent definitions of the GPTs for inhomogeneous inclusions. We then show that, as in the homogeneous case, the GPTs are the basic building blocks for the far-field expansion of the voltage in the presence of the conductivity inclusion. Relating the GPTs to the Neumann-to-Dirichlet (NtD) map, it follows that the full knowledge of the GPTs allows unique determination of the conductivity distribution. Furthermore, we show important properties of the the GPTs, such as symmetry and positivity, and derive bounds satisfied by their harmonic sums. We also compute the sensitivity of the GPTs with respect to changes in the conductivity distribution and propose an algorithm for reconstructing conductivity distributions from their GPTs. This provides a new strategy for solving the highly nonlinear and ill-posed inverse conductivity problem. We demonstrate the viability of the proposed algorithm by preforming a sensitivity analysis and giving some numerical examples.
Choice of dispersants for the nano-apatite filler of polylactide-matrix composite biomaterial
C. Deng,J. Weng,Q.Y. Cheng,S.B. Zhou,X. Lu,J.X. Wan,S.X. Qu,B. Feng,X.H. Li 한국물리학회 2007 Current Applied Physics Vol.7 No.6
The aim of this study is to compare de-aggregative ability of common organic dispersants for the acicular nano-apatite crystallite withmain composition of calcium hydroxyapatite (HA) as a ller of composite containing polylactide (PLA) matrix. Firstly, the acicularnano-apatite powders with an average length of 70120 nm were synthesized based on traditional chemical co-precipitation andfreeze-drying techniques. Common organic dispersants including tetrahydrofuran, acetone, chloroform,N,N-dimethyl formamideiments showed that nano-apatite suspension dispersed by DMF and ethanol presented homogeneous and stable colloid after vigorly stir-red for 24 h and then kept still for same time, respectively. Results of particle measurements and viscosity measurement illuminated that alarge number of the nano-apatite particles with an average dimension of 297.86 nm and viscosity of 0.8872 cP in DMF suspension couldbe dispersed up to 91.28 nm by the DMF dispersant and the DMF dispersant could minimize agglomeration between the apatite ultra-furan, acetone and ethanol, when the nano-apatite/PLA composite biomaterials were prepared.