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Connectedness and compactness of weak efficient solutions for vector equilibrium problems
Xian Jun Long,Jian Wen Peng 대한수학회 2011 대한수학회보 Vol.48 No.6
In this paper, without assumption of monotonicity, we study the compactness and the connectedness of the weakly efficient solutions set to vector equilibrium problems by using scalarization method in locally convex spaces. Our results improve the corresponding results in [X. H. Gong, Connectedness of the solution sets and scalarization for vector equilibrium problems, J. Optim. Theory Appl. 133 (2007), 151-161].
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A New Species of the Genus Xysticus (Araneae: Thomisidae) from China
Peng, Xian-Jin,Yin, Chang-Min,Kim, Joo-Pil The Korean Society for Integrative Biology 2000 Korean journal of biological sciences Vol.4 No.3
A new species, Xysticus jiangi n. sp. is described based on the specimens collected in Hunan province, China. X. jiangi is similar to X. chui, but distinguished by smaller spermathecae, distinct copulatory canals, and Y-shaped median apophysis. In addition, basal apophysis of tegulum is well developed, compared to that of the latter.
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Peng Zhu,An-Qin Duan,Ting-Xian Deng,Xing-Rong Lu,Xiao-Ya Ma,Sha-Sha Liang,Chun-Ying Pang,Xian-Wei Liang 한국생물공학회 2017 Biotechnology and Bioprocess Engineering Vol.22 No.5
In recent years, CRISPR/Cas9 has rapidly become one of the most promising genome editing tools because it is simple and easy to use and cost effective. However, the large size of Cas9 sequences limits its application in clinically promising vectors and it also impacts non-viral transfection. In this study, CRISPR/Cas9 adenovirus vectors that target the buffalo 18s rDNA gene were constructed, transfected into 293 cells for adenovirus packaging, and the adenovirus was used to knockout the 18s rDNA gene in buffalo mammary epithelial cells. The results demonstrated that the CRISPR/Cas9 adenovirus vectors for the buffalo 18s rDNA gene could efficiently target the sites as revealed by the fluorescence reporter system. After amplification, the adenovirus titer of Sn458- 18s1 and Sn458-18s2 reached 1.03 × 109PFU/mL and 1.05 × 109 PFU/mL, respectively. For buffalo mammary epithelial cell infection, the efficiency was 100% when the multiplicity of infection (MOI) 100 PFU/mL. There were 9 mutational clones found in the 20 clones, and the gene mutagenesis rate reached 45%. Of these, 2 clones were 35-bp deleted and 7 clones were 12-bp deleted. These results suggested that the adenovirus system overcame the low transfection efficiency of the buffalo mammary epithelial cells associated with using lipid-based methods or electroporation. Moreover, we preliminary developed an efficient technique for multiple-locus gene targeting at repeated sequences of the buffalo genome.
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Three new diphenylpropanes from Celastrus hindsii
Xian Qing Hu,Wei Han,Zhu Zhen Han,Qing Xin Liu,Xi-Ke Xu,Peng Fu,Hui-Liang Li 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.11
Three new diphenylpropanes, HindsiipropaneA–C (1–3), together with one known arylpropyl quinoneGriffithane D (4), were isolated from Celastrus hindsii. Their structures were established by 1D and 2D nuclearmagnetic resonance spectroscopic analysis, and massspectroscopy. Compound 4 was firstly obtained in thisgenus. All the isolated compounds were evaluated in vitrofor cytotoxicity against four human tumor cell lines (A549,HCT116, MDA-MB-231, BEL7404) by the MTT assay.
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Xian Jing,Kaixuan Wang,Jieqiong Lin,Peng Liu,Yudi Kan,Xu Zheng,Jie Sun,Yingchun Li 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.1
Slicing reference data and adaptive slicing algorithm are the key issues to find out appropriate layer thicknesses of three-dimensional (3D) microstructures with free-form surface in two photon polymerization (TPP). In the present work, an adaptive slicing method (ASM) was proposed to improve the fabricating efficiency of 3D microstructures with free-form surface in TPP microfabrication. In the proposed method, slicing reference data were obtained by intersecting a series of vertical planes with the triangular patch format along characteristic directions. Maximum acceptable chordal height played a role as judging criteria to obtain appropriate layer thicknesses. What's more, typical 3D microstructures with free-form surfaces were fabricated with uniform slicing method (USM) and the proposed ASM, respectively. The comparison results showed that the proposed method effectively improved fabricating efficiency, guaranteeing an acceptable surface quality at the same time. This work was expected to provide references for improving fabrication efficiency of complex 3D microstructures in TPP.
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Peng Liang,Tian-Tian Ren,Wei-Man Tian,Wen-Jia Xu,Gang-Hong Pan,Xian-Hong Yin 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.1
Three new transition metal complexes based on Ozagrel [Cu(Ozagrel)]n (1), [Zn(Ozagrel)(Cl)]n (2), {[Mn2- (Ozagrel)(1,4-ndc)2]·(H2O)}n (3), (Ozagrel = 3-(4-((1H-imidazol-1-yl)methyl)phenyl)acrylic acid; 1,4-ndc = 1,4-Naphthalenedicarboxylic acid) have been hydrothermally synthesized and characterized by elemental analyse, IR, TG, PXRD, electrochemical analysis and single crystal X-ray diffraction. X-ray structure analysis reveals that 1 and 3 are 3D coordination polymers, while complex 2 is a two-dimensional network polymer, the 2D layers are further packed into 3D supramolecular architectures that are connected through hydrogen bonds. The electrochemistry of 1-3 was studied by cyclic voltammetry in methanol and water using a glassy carbon working electrode. Also, thermal decomposition process and powder X-ray diffraction of complexes were investigated.
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One New Species of The Genus Phrynarachne(Araneae, Thomisidae) from China
Peng Xian-Jin, Yin Chang Min, 김주필(Joo Pil Kim) 한국거미연구소 2004 한국거미 Vol.20 No.1
게거미과의 중국산 신종인 Phrynarachne sinensis을 보고하고자 한다. The present paper reports one new species, Phrynarachne sinensis sp. nov., from China. Type specimen is deposited at College of Life Sciences, Hunan Normal University. Measurements are in millimeter.
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