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Preparation of Anhydrous LnCl_3(Ln=Eu, Er, Lu) by Chemical Vapor Transport

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Journal of Rare Earths 2000年第2期18卷 152-154页

作者： WANG lin shan, LI Ying, WANG Yu hong (Department of Chemistry, Northeastern University, Shenyang 110006, China) Northeastern Univ Dept Chem Shenyang 110006 Peoples R China

Anhydrous lanthanide chlorides LnCl 3(Ln=Eu, Er, Lu) which are not easy to prepare in other ways were prepared by chemical vapor transport(CVT) method. Ln 2O 3 reacted with an excess of Al 2Cl 6 at 300 ℃ to produce LnCl 3. LnCl 3 reacted with Al 2Cl 6 at high temperature to form the gaseous complexes which decomposed at low temperature. LnCl 3 was then separated from other solids by controlling a proper temperature gradient. Residual Al 2Cl 6(g) was removed by the carrier of dry Cl 2 N 2 gases at 200 ℃. The yield rates are >90%, and the purity of products is >99 5%. The high purity of anhydrous lanthanide chlorides can be obtained by CVT method.

关键词： rare earths preparation chemical vapor transport

Genetic behavior of Triticum aestivum–Dasypyrum villosum translocation chromosomes T6V#4S·6DL and T6V#2S·6AL carrying powdery mildew resistance

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Journal of Integrative Agriculture 2017年第10期16卷 2136-2144页

作者： LIU Chang YE Xing-guo WANG Mei-jiao LI Shi-jin lin Zhi-shan National Key Facility of Crop Gene Resources and Genetic Improvement Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 P.R. China

T6V#2S·6AL and T6V#4S·6DL translocation chromosomes developed from the cross of wheat and different Dasypyrum villosum accessions have good powdery mildew （PM） resistance, but their pairing and pyramiding behavior remains unclear. Results in this study indicated that the pairing frequency rate of the two differently originated 6VS chromosomes in their F1 hybrid was 18.9% according to genomic in situ hybridization （GISH）; the PM resistance plants in the F2 generation from the cross between T6V#4S·6DL translocation line Pm97033 and its PM susceptible wheat variety Wan7107 was fewer than expected. However, the ratio of the resistant vs. the susceptible plants of 15：1 in the F2 generation derived from the cross between the two translocation lines of T6V#2S·6AL and T6V#4S·6DL fitted well. Plants segregation ratio （homozygous：heterozygous：lacking） revealed by molecular marker for T6V#4S·6DL or T6V#2S·6AL in their F2 populations fitted the expected values of 1：2：1 well, inferring that the pairing of the two alien chromosome arms facilitates the transmission of T6V#4S·6DL from the F1 to the F2 generation. A quadrivalent was also observed in 21% of pollen mother cells （PMCs） of homozygote plants containing the two pairs of translocated chromosomes. The chromosome pairing between 6V#2S and 6V#4S indicates that it will be possible to obtain recombinants and clarify if the PM resistance determinant on one alien chromosome arm is different from that on the other.

关键词： Trificum aestivum Dasypyrum villosum translocation genetic behavior powdery mildew resistance GISH molecular marker

A Class of Metric Spaces Which Do Not Coarsely Contain Expanders

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Communications in Mathematical Research 2014年第3期30卷 284-288页

作者： shan lin Gong Gui-hua Department of Mathematics University of Puerto RicoRio Piedras Campus

In this paper, a class of metric spaces which include Hilbert spaces and Hadamard manifolds are defined. And the expanders cannot be coarsely embedded into this class of metric spaces are proved.

关键词： coarse embedding expander special metric space

Expanders, Group Extensions, Hadamard Manifolds and Certain Banach Spaces

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Communications in Mathematical Research 2019年第4期35卷 335-339页

作者： shan lin Gong Gui-hua Faculty of Natural Sciences University of Puerto Rico Rio Piedras Campus

In this note,we prove that expanders cannot be coarsely embedded into group extensions of sequences of groups which are coarsely embeddable into Hardamad manifolds and certain Banach spaces due to the similar concentr... 详细信息

关键词： expander group extension Hadamard manifold Banach space

A New Synthetic Approach to Elvucitabine

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Chemical Research in Chinese Universities 2013年第1期29卷 57-61页

作者： ZHANG ling-yu LOUYuan-yuan ZHAO Gui-long ZHANG lin-shan EHEN Yan Tianjin Key Laboratory of Molecular Design and Drug Discovery Tianjin Institute of Pharmaceutical Research Tianjin 300193 P. R. China ~chool of Chemical and Pharmaceutical Engineering Shandong Polytechnic Institute Jinan 250353 P R. China" 3. Shandong Blood Center Jinan 250014 P R. China shandong Blood Center Jinan 250014 P. R. China

A new synthetic approach to elvucitabine started from L-xylose via the reactions of 10 steps in an overall yield of 20% was developed. The key steps included trimethylsilyl trifluoromethanesulfonate（TMSOT0-mediated stereocontrolled β-glycosidation and exquisite choice of chloroacetyl group for the protection of hydroxyl groups as well as the corresponding deprotection under notably mild conditions. The structure of elvucitabine, in particular, the stereochemistry thereof, was unambiguously determined by comparison of the physical properties, such as 1H NMR data and the specific rotation, of the synthesized sample with those reported.

关键词： Elvucitabine Antiviral Nucleoside analogue Synthetic methodology

Novel dihydropyrazole derivatives linked with multi(hetero)aromatic ring:Synthesis and antibacterial activity

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Chinese Chemical Letters 2009年第4期20卷 427-430页

作者： lin shan Bai Yan Wang Xin Hua Liu Hai Liang Zhu Bao An Song Key Laboratory of Anhui Educational Department Anhui University of Technology Maanshan 243002 China State Key Laboratory of Pharmaceutical Biotechnology Nanjing University Nanjing 210093 China Key Laboratory of Green Pesticide and Agriculture Bioengineering Ministry of Education Guizhou University Guiyang 550025 China

Eight novel heterocycle-substituted dihydropyrazole derivatives were synthesized and characterized by ESI-MS, ^1H NMR and ^13C NMR. All of the compounds have been screened for their antibacterial potential in vitro against Bacillus subtilis, Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. The results show that compounds 9b, 9g and 9h displayed significant activity with MIC values in the range of 0.39-1.562 μlmL against B. subtilis.

关键词： Synthesis Multi(hetero)aromatic pyrazole Antibacterial activity

Optimization of electrocatalytic properties of NiMoCo foam electrode for water electrolysis by post-treatment processing

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Rare Metals 2015年第11期34卷 802-807页

作者： Jian-Wei Wang Yue-Fa Wang Jing-Guo Zhang Yan-lin Yu Ge-Ge Zhou Lei Cheng lin-shan Wang Z.Zak Fang State Key Laboratory of Nonferrous Metals and Processes General Research Institute for Nonferrous Metals GRIPM Advanced Materials Co. Ltd General Research Institute for Nonferrous Metals Department of Metallurgical Engineering University of UtahSalt Lake City

Hydrogen is a potential alternative to fossil fuels in coping with the increased global energy demand,and water electrolysis is an attractive approach for H2production. Nickel–molybdenum–cobalt（Ni Mo Co） foam electrodes used for water electrolysis were prepared by the electrodeposition method, and the influence of heat treatments on the surface structure of Ni Mo Co foam electrodes,mechanical properties, and electrochemical performance of the synthesized electrodes was investigated in order to optimize the post-treatment processes. The residual carbon in the surface of the electrode was removed by decarbonization in the atmospheric condition. The carbon content decreases to lower than 200 ×10-6when the temperature exceeds 500 °C. Next, the material is reduced in hydrogen atmosphere from 500 to 1100 °C to remove the surface oxides. As the temperature increases, the surface molybdenum content increases significantly between 500 and 800 °C, the surface grains become coarser, and the tensile strength and elongation increase as well. The lowest polarization overpotential is obtained at 800 °C. Below 800 °C, the electrode is only partially reduced and some black oxide zones are observed on the electrode surface,which leads to the higher polarization overpotential. Thesamples heat-treated at the temperatures of higher than 800 °C show better strength and toughness as well as brighter appearance. However, the surface particle coarsening leads to a decrease in the specific surface area and a higher overpotential.

关键词： Water electrolysis Foam electrode Ni Mo Co Post-tr

Development of peanut varieties with high oil content by in vitro mutagenesis and screening

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Journal of Integrative Agriculture 2020年第12期19卷 2974-2982页

作者： WANG Jing-shan SHI Lei LIU Yue ZHAO Ming-xia WANG Xia QIAO Li-xian SUI Jiong-ming LI Guan ZHU Hong YU shan-lin College of Agronomy Qingdao Agricultural University/Shandong Provincial Key Laboratory of Dryland Farming TechnologyQingdao 266109P.R.China Haidu College Qingdao Agricultural UniversityLaiyang 265200P.R.China College of Horticulture Qingdao Agricultural UniversityQingdao 266109P.R.China

Peanut (Arachis hypogaea L.) is an important oil crop globally and high oil content is one of the major targets in peanut breeding programs. Previous studies indicated that the osmotic pressure (OP) of the leaves of peanut plants subjected to drought stress was negatively correlated with kernel oil content. Based on this knowledge, we established a practical and reliable method for creating new peanut varieties with high oil content using in vitro mutagenesis and directional OP-based selection. Using embryonic leaflets of peanut variety Huayu 20 as explants, pingyangmycin (PYM) as the mutagen, and hydroxyproline (HYP) as the OP regulator, we developed 15 HYP-tolerant regenerated plants. For each regenerated plant, we selected offspring with oil content>55% (relative to 49.5% for Huayu 20). We developed and released three new peanut varieties with high yield and high oil content from the offspring of the HYP-tolerant regenerated plants. The three new varieties were named as Yuhua 4, Yuhua 9 and Yuhua 14 and their oil contents were 57.7, 61.1 and 59.3%, respectively. The results indicate that in vitro mutagenesis with PYM followed by directed screening with HYP is a useful approach for breeding peanut varieties with high oil contents.

关键词： Arachis hypogaea in vitro mutagenesis HYP-directed selection high oil variety

Identification and Expression Analysis of the Phosphoenolpyruvate Carboxylase Gene Family in Peanut (Arachis hypogaea L.)

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Agricultural Sciences in China 2010年第4期9卷 477-487页

作者： YU shan-lin PAN Li-juan YANG Qing-li CHEN Ming-na ZHANG Hong-sheng State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural University Nanjing 210095 P.R.China shandong Peanut Research Institute Qingdao 266100 P.R.China

Phosphoenolpyruvate carboxylase （PEPC） is widely distributed in plants and bacteria, and catalyzes the carboxylation of phosphoenolpyruvate to form oxaloacetate and inorganic phosphate. To investigate the molecular mechanisms of the regulation and control of peanut oil, with the degenerated primers and RACE-PCR approach, five PEPC genes were cloned from peanut, and designated as AhPEPC1, AhPEPC2, AhPEPC3, AhPEPC4, and AhPEPC5, respectively. The structure and phylogenetic analysis of PEPC protein indicated that AhPEPC1-4 genes encoded a typical plant-type PEPC-enzyme, and AhPEPC5 a bacterial-type. By real-time quantitative RT-PCR approach the expression pattern of each gene was detected in various tissues of normal and high oil-content peanut varieties. It was found that there was a lower expression level of AhPEPCs genes except for the AhPEPC2 in high-oil peanut than normal-oil peanut line. The results provide some fundamental information for the further investigation of plant PEPC proteins and their role in regulation of oil-content in peanut seeds.

关键词： peanut phosphoenolpyruvate carboxylase gene cloning expression pattern regulation of oil-content