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Development of Novel Cytoplasmic Male Sterile Source from Dongxiang Wild Rice(Oryza rufipogon)

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Rice science 2013年第5期20卷 379-382页

作者： shen xian-hua YAN Song HUANG Ren-liang ZHU Shan XIONG hong-liang shen Lin-jun Rice Research Institute Jiangxi Academy of Agricultural Sciences/Jiangxi Provincial Key Laboratory for Physiology and Genetics of Rice

This study was conducted to develop and characterize a novel cytoplasmic male sterile （CMS） source which was identified from Dongxiang wild rice （Oryza rufipogon） by crossing Dongxiang wild rice as female with Zhongzao 35, an indica inbred variety, as male and continuous backcrossing with Zhongzao 35. Observation under optical microscope manifested that this novel CMS belonged to typical abortion type with less pollen compared with wild abortive type cytoplasm （CMS-WA）. Sequential planting showed that this novel CMS has complete and stable male sterility. Testcross experiment showed that all the 24 tested materials including maintainer and restorer lines of CMS-WA and honglian type cytoplasm （CMS-HL） and other indica inbred varieties are the maintainers with complete maintaining ability, suggesting that this novel CMS has fertility restoration totally different from CMS-WA and CMS-HL and belongs to a novel type of CMS. So far, we only discovered a unique fertility restoration source for this novel CMS. Inheritance analysis showed that the fertility restoration of this CMS was governed by three pairs of independent dominant genes. Prospect for application of this novel CMS system in hybrid rice breeding was also discussed.

关键词： Dongxiang wild rice cytoplasmic male sterility fertility restoration Oryza rufipogon

SYNTHESIS AND CRYSTALLIZATION BEHAVIOR OF POLY(ETHER ETHER KETONE ETHER KETONE)(PEEKEK)

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Chinese Journal of Polymer Science 2000年第2期18卷 129-132页

作者： Zhao-bin Qiu Zhi-shen Mo Ying-ning Yu hong-fang Zhang xian-hong Wang Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China Chinese Acad Sci Changchun Inst Appl Chem Polymer Phys Lab Changchun 130022 Peoples R China

In this paper, the synthesis and crystallization behavior of poly(ether ether ketone ether ketone) (PEEKEK) are reported. PEEKEK was prepared from 4,4'-bis(p-fluorobenzoyl) diphenyl ether (4,4'-FBDE) and hydroquinone along the nucleophilic substitution route. The thermal properties were investigated by using DSC and TGA. The crystallization behavior of PEEKEK under several conditions, i.e., crystallization from the molten state (melt crystallization), crystallization from a quenched sample (cold crystallization) and crystallization induced by exposing glassy sample to methylene chloride (solvent-induced crystallization) has also been investigated. The results show that crystallization of PEEKEK could be induced by the above methods, and no polymorphism was found. The differences in the crystallization of PEEKEK induced by the above methods are seen in their degree of crystallinity.

关键词： poly(aryl ether ketone)s synthesis crystallization

Lattice-Inversion Embedded-Atom-Method Interatomic Potentials for Group-VA Transition Metals

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Chinese Physics Letters 2011年第12期28卷 113-116页

作者： YUAN Xiao-Jian CHEN Nan-xian shen Jiang Institute for Applied Physics University of Science and Technology BeijingBeijing 100083 Department of Applied Physics Hunan UniversityChangsha 410082 Department of Physics Tsinghua UniversityBeijing 100084

The lattice-inversion embedded-atom-method(LI-EAM)interatomic potential we developed previously[***.:*** 22(2010)375503]is extended to group-VA transition metals(V,Nb and Ta).It is found that considering interatomic interactions up to appropriate-distance-neighbor atoms is crucial to constructing accurate EAM potentials,especially for the prediction of surface *** LI-EAM interatomic potentials for group-VA transition metals are successfully built by considering interatomic interactions up to the fifth neighbor *** angular-independent potentials drastically promote the accuracy of the predicted surface energies,which match the experimental results well.

关键词： Transition Inversion neighbor

Research of detonation products of RDX/Al from the perspective of composition

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Defence Technology（防务技术） 2023年第6期24卷 31-45页

作者： Xing-han Li Zhi-cong Yi Qi-jun Liu Fu-sheng Liu Ze-teng Zhang shen-yuan Hou xian-xu Zheng Xu Zhang hong-bo Pei School of Physical Science and Technology Southwest Jiaotong UniversityChengdu610031China National Key Laboratory for Shock Wave and Detonation Physics Mianyang621900China

Aluminized explosives exhibit excellent performance because the oxidation of aluminum(Al)powders enhances the pressure and temperature of detonation ***,the equation of state(EOS)of detonation products has not been understood *** the present study,we conducted long-time tests(approximately 1 ms)of a metal rod driven by detonation products of RDX,RDX/Li F,and RDX/*** addition,we used laser velocimetry(PDV)to measure the freesurface velocity of the *** code DLCHEQ was successfully applied to the hydrodynamic program SSS to perform the roddriven test,and a novel method was established to study the EOS of detonation products from the perspective of *** reliability of DLCEHQ was validated by a small deviation(<10%)between the experimental rod free-surface velocity of RDX and the calculated results;the deviation was considerably less than that from the results obtained using the JWL EOS and ideal-gas *** endothermic process and the reaction of Al powders(Al+H_(2)O+NO+CO_(2)→CO+H_(2)+N_(2)+Al_(2)O_(3))were analyzed by calculating the rod free-surface velocity of RDX/Li F and RDX/Al,*** results of the present study demonstrated that the thermodynamic state of Al powders has notable influence on the EOS of aluminized detonation products,and the findings were compared with those of previous ***,the temperature equilibrium between Al powders and CHNO products is not always achieved,and the disequilibrium is more obvious when the reaction of Al powders is ***,the reaction rate of Al powders depends on pressure and Al ***,the endothermic process of Al powders has a high contribution to the decrease in the work ability of RDX/Al instead of the gasconsumption mechanism of the Al *** than half of the reaction heat of Al powders is used to heat itself,whereas the gas consumption during the reaction is negligible.

关键词： Aluminized explosive Detonation products EOS Rod-driven test Compositional evolution

Synthesis of aza-naphthindolizinedione derivatives

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Chinese Chemical Letters 2008年第5期19卷 533-536页

作者： De Qing shen Yu Cheng Lin Kun An xian Zhang Bu School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510080 China

A series of aza-naphthindolizinedione derivatives, such as indolizinoquinolinedione derivatives, indolizinophthalazinedione derivatives and indolizinoquinoxalinedione derivatives were designed and synthesized. The syn... 详细信息

关键词： Synthesis Indolizinoquinolinedione Indolizinophthalazinedione Indolizinoquinoxalinedione

Tailoring mechanical heterogeneity,nanoscale creep deformation and optical properties of nanostructured Zr-based metallic glass

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Rare Metals 2023年第10期42卷 3430-3442页

作者： Jing-xian Cui Qiang Luo Zheng-Guo Zhang Jing-Tao Zhu Bao-Long shen School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing211189China School of Physics Science and Engineering Tongji UniversityShanghai200092China

Metallic glasses are spatially heterogeneous at the nanometer ***,the effects of external excitation on their structural and mechanical heterogeneity and the correlation to their properties are still ***,atomic force microscopy(AFM) and high-resolution transmis sion elec tron micro scopy(HRTEM) were carried out to explore the effects of cryogenic thermal cycling(CTC) on mechanical/structural heterogeneity,nano sc ale creep deformation and optical properties of nano structured metallic glass thin films(MGTFs).The results indicate that CTC treatment alters the distribution fluctuations of hardness/modulus and energy dissipation and results in an increase-then-decrease variation in mechanical *** applying Maxwell-Voigt model,it can be shown that CTC treatment results in a remarkable activation of more defects with longer relaxation time in soft regions but has only a slight effect on defects in hard *** addition,CTC treatment increases the transition time from primary-state stage to steady-state stage during creep *** enhanced optical reflectivity of the MGTFs after 15 thermal cycles can be attributed to increased aggregation of Cu and Ni *** results of this study shed new light on understanding mechanical/structural heterogeneity and its influence on nanoscale creep deformation and optical characteristics of nanostructured MGTFs,and facilitate the design of high-performance nanostructured MGTFs.

关键词： Metallic glass thin films(MGTFs) Cryogenic thermal cycling(CTC) Structural heterogeneity Mechanical and creep properties Optical characteristics

Crystallization Behevior of Poly(3-dodecylthiophene)

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Chinese Chemical Letters 1999年第5期10卷 419-420页

作者： Xiu Ying QIAO xian hong WANG Zhi shen MO hong Fang ZHANG(Polymer Physics Laboratory. Changchun Institute of Applied Chemistry. Chinese Academy of Sciences. Changchun 130022) Chinese Acad Sci Changchun Inst Appl Chem Polymer Phys Lab Changchun 130022 Peoples R China

The crystallization behavior of poly (3-dodecylthiophene) (P3DDT) is studied bq differential scanning calorimetry (DSC) under different cooling rates. When the methods of Jeziorny., Ozawa and a new one proposed by our laboratory are applied to describe its nonisothermal crystallization behavior, the new one is confirmed to be the best and convenient. By determining kinetic parameters, the analysis of the nonisothermal crystallization behavior is performed. According to Kissinger method, the crystallization activation energy of P3DDT is also evaluated.

关键词： nonisothermal crystallization behavior poly (3-dodecylthiophene)

Acanthopanax senticosus polysaccharides-induced intestinal tight junction injury alleviation via inhibition of NF-κB/MLCK pathway in a mouse endotoxemia model

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World Journal of Gastroenterology 2017年第12期23卷 2175-2184页

作者： Jie Han Ji-hong Li Guang Bai Guo-Shun shen Jing Chen Jia-Nan Liu Shuo Wang xian-Jun Liu Key Laboratory of Zoonosis of Liaoning Province College of Animal Science and Veterinary MedicineShenyang Agricultural University Department of Pharmacy Affiliated HospitalLiaoning University of Traditional Chinese Medicine Department of Gastroenterology Affiliated Hospital of Liaoning University of Traditional Chinese Medicine Testing and Analysis Center Shenyang Agricultural University

AIM To examine the effects of Acanthopanax senticosus polysaccharides(ASPS) on intestinal tight junction(TJ) disruption and nuclear factor-kappa B(NF-κB)/myosin light chain kinase(MLCK) activation in *** BALB/C mice(6-8-weeks-old) received continuous intragastric gavage of ASPS for 7 d before injection of lipopolysaccharide(LPS), or received ASPS once after LPS injection. Blood and intestinal mucosal samples were collected 6 h after LPS challenge. Clinical symptoms, histological injury, intestinal permeability,TJ ultrastructure, and TJ protein expression were *** Compared with mice in the LPS group, pretreatment with ASPS improved clinical and histological scores by 390.9%(P < 0.05) and 57.89%(P < 0.05), respectively, and gut permeability change in endotoxemic mice was shown by a 61.93% reduction in reduced leakage of fluorescein isothiocyanate-dextran 6 h after LPS injection(P < 0.05). ASPS pretreatment also prevented LPS-induced TJ ultrastructure breakdown supported by increased electron dense materials between adjoining cells, sustained redistribution and expression of occludin(0.597 ± 0.027 vs 0.103 ± 0.009, P < 0.05) and zonula occludens-1(0.507 ± 0.032 vs 0.125 ± 0.019, P < 0.05), and suppressed activation of the NF-κB/MLCK pathway indicated by reduced expression of NF-κB, phospho-inhibitor kappa B-alpha, MLCK and phospho-myosin light-chain-2 by 16.06%(P < 0.05), 54.31%(P < 0.05), 66.10%(P < 0.05) and 64.82%(P < 0.05), respectively. CONCLUSION ASPS pretreatment may be associated with inhibition of the NF-κB/MLCK pathway and concomitant amelioration of LPS-induced TJ dysfunction of intestinal epithelium in endotoxemia.

关键词： Acanthopanax senticosus polysaccharide Intestinal permeability Tight junction Nuclear factorkappa B Myosin light chain kinase

Genome-Wide Identification of Genes Responsive to ABA and Cold/Salt Stresses in Gossypium hirsutum by Data-Mining and Expression Pattern Analysis

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Agricultural Sciences in China 2011年第4期10卷 499-508页

作者： ZHU Long-fu HE Xin YUAN Dao-jun XU Lian XU Li TU Li-li shen Guo-xin ZHANG hong ZHANG xian-long National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 P.R.China Department of Biological Science Texas Tech University Lubbock 79409 USA

For making better use of nucleic acid resources of Gossypium hirsutum, a data-mining method was used to identify putative genes responsive to various abiotic stresses in G. hirsutum. Based on the compiled database including genes involved in abiotic stress response in Arabidopsis thaliana and the comprehensive analysis tool of GENEVESTIGATOR v3, 826 genes up-regulated or down-regulated significantly in roots or leaves during salt or cold treatment in Arabidopsis were identified. As compared to these 826 Arabidopsis genes annotated, 38 homologous expressed sequence tags （ESTs） from G. hirsutum were selected randomly and their expression patterns were studied using a quantitative real-time reverse transcription-polymerase chain reaction method. Among these 38 ESTs, about 55% of the genes （21 of 38） were different in response to ABA between cotton and Arabidopsis, whereas 70% of genes had similar responses to cold and salt treatments, and some of them which had not been characterized in Arabidopsis are now being investigated in gene function studies. According to these results, this approach of analyzing ESTs appears effective in large-scale identification of cotton genes involved in abiotic stress and might be adopted to determine gene functions in various biologic processes in cotton.

关键词： cold stress salt stress data-mining gene Gossypium hirsutum