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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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Gene Mapping Related to Yellow Green Leaf in a Mutant Line in Rice (Oryza sativa L.)
Peng Du,Ying Hua Ling,Xian Chun Sang,Fang Ming Zhao,Rong Xie,Zheng Lin Yang,Guang Hua He 한국유전학회 2009 Genes & Genomics Vol.31 No.2
A mutant, which derived from the restorer line Jinhui10 treated with EMS, showed completely yellow green leaves, and it had low chlorophyll content and poor agronomic characteristics during the growing stage. The F1 plants from the cross between normal × the mutant showed normal green leaves, and the segregation ratio of normal to yellow green leaves was 3:1 in F2 population. It indicated that the trait was controlled by a single recessive nuclear gene, temporarily designated as ygl3. The gene ygl3 was mapped between RM468 and RM3684 with genetic distances 8.4 cM and 1.8 cM on chromosome 3. This result would be used as genetic information for fine mapping and map-based cloning of ygl3 gene.
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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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Physiological character and molecular mapping of leaf-color mutant wyv1 in rice (Oryza sativa L.)
Xian-chun Sang,Li-kui Fang,Yuenyong Vanichpakorn,Ying-hua Ling,Peng Du,Fang-ming Zhao,Zheng-lin Yang,Guang-hua He 한국유전학회 2010 Genes & Genomics Vol.32 No.2
The seed of an excellent indica restorer line Jinhui10 (Oryza sativa L. ssp. indica) was treated by ethyl methanesulfonate (EMS); a leaf-color mutant displaying distinct phenotype throughout development grown in paddy field was identified from the progeny. The mutant leaf showed white-yellow at seedling stage and then turned to yellow-green at tillering stage, after that, virescent color appeared until to maturity. The mutant was thus temporarily designed as wyv1. The chlorophyll contents decreased significantly and the changing was consistent with the chlorotic level of wyv1 leaves. Chlorophyll fluorescence kinetic parameters measured at the seedling stage showed that co-efficiency of photochemical quenching (qP),actual photosystem II efficiency (ΦPS II), electron transport rate (ETR) and initial chlorophyll fluorescence level (Fo), net photosynthetic rate (Pn) and maximum photochemical efficiency (Fv / Fm) significantly decreased in severe chlorotic leaf of the mutant compared with that of wild type. However,no significant differences were observed for Pn and Fv/Fm between virescent leaf and normal green leaf. Genetic analysis suggested that the mutant phenotype was controlled by a single recessive nuclear gene which was finally mapped between SSR marker Y7 and Y6 on rice chromosome 3 based on F2 population of Xinong1A / wyv1. Genetic distances were 0.06 cM and 0.03 cM respectively, and the physical distance was 84kb according to the sequence of indica rice 9311. The results must facilitate map-based cloning and functional analysis of WYV1 gene.
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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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