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Journal of Integrative Plant Biology 2007年第6期49卷 908-914页

作者： Zhen-Lan liu hong Xu Jing-xin Guo Yao-Guang liu Key Laboratory of Plant Functional Genomics and Biotechnology of Education Department Guangdong Province College of Life Sciences South China Agricultural University Guangzhou 510642 China

The so-called ＂wild abortive＂（WA） type of cytoplasmic male sterility （CMS） derived from a wild rice species Oryza rufipogon has been extensively used for hybrid rice breeding. However, extensive analysis of the structure of the related mitochondrial genome has not been reported, and the CMS-associated gene（s） remain unknown. In this study, we exploited a mitochondrial genome-wide strategy to examine the structural and expressional variations in the mitochondrial genome conferring the CMS. The entire mitochondriai genomes of a CMS-WA line and two normal fertile rice lines were amplified by Long-polymerase chain reaction into tilling fragments of up to 15.2 kb. Restriction and DNA blotting analyses of these fragments revealed that structural variations occurred in several regions in the WA mitochondrial genome, as compared to those of the fertile lines. All of the amplified fragments covering the entire mitochondrial genome were used as RNA blot probes to examine the mitochondriai expression profile among the CMS-WA and fertile lines. As a result, only two mRNAs were found to be differentially expressed between the CMS-WA and the fertile lines, which were detected by a probe containing the nad5 and orf153 genes and the other having the ribosomal protein gene rpl5, respectively. These mRNAs are proposed to be the candidates for further identification and functional studies of the CMS gene.

关键词： cytoplasmic male sterility mitochondrial genome rice transcription.

Changes in Activities of Antioxidant-Related Enzymes in Leaves of Resistant and Susceptible Wheat Inoculated with Rhizoctonia cerealis

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Agricultural Sciences in China 2011年第4期10卷 526-533页

作者： liu hong-xia xin Zhi-yong ZHANG Zeng-yan National Key Facility for Crop Gene Resources and Genetic Improvement~Institute of Crop Sciences Chinese Academy of AgriculturalSciences Beijing 100081 P.R. China

In this study, the changes in activities of peroxidase （POD）, glutathione S-transferase （GST）, catalase （CAT）, and superoxide distmuase （SOD） in leaves of four wheat cultivars, including resistant cultivars Shannong 0431 and Shanhongmai, a mildsusceptible cultivar Lumai 21, and a susceptible cultivar Wenmai 6, were investigated to explore if these antioxidantrelated enzymes were involved in wheat defense response to Rhizoctonia cerealis attack. Results showed that the activities of these enzymes in different wheat cultivars varied greatly after challenging with R. cerealis. The POD activities in resistant cultivars Shannong 0431 and Shanhongmai increased much quicker after the inoculation and displayed much higher activity than that in susceptible cultivar Wenmai 6. In contrast, POD activity showed a slow accumulation and a delayed peak time. The activities of GST and CAT in Shannong 0431 and Lumai 21 increased obviously within 48 h post inoculation （hpi）, whereas SOD activity decreased dramatically within 24 hpi in Shannong 0431 and 24-48 hpi in Lumai 21. In susceptible cultivar Wenmai 6, the SOD and CAT activities didn’t change obviously, whereas the activity of GST was decreased. The activities of CAT and GST in Shanhongmai did not show significant difference compared with those in Wenmai 6. Results suggested that POD activity may be positively associated with wheat defense to R. cerealis.

关键词： wheat Rhizoctonia cerealis antioxidant-related enzymes peroxidase

Cytotoxic diaporindene and tenellone derivatives from the fungus Phomopsis lithocarpus

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Chinese Journal of Natural Medicines 2021年第11期19卷 874-880页

作者： liu Hui-Bo liu Zhao-Ming CHEN Yu-Chan Tan Hai-Bo LI Sai-Ni LI Dong-Li liu hong-xin ZHANG Wei-Min State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyInstitute of MicrobiologyGuangdong Academy of SciencesGuangzhou 510070China School of Chemical and Environmental Engineering Wuyi UniversityJiangmen 529020China Program for Natural Products Chemical Biology Key Laboratory of Plant Resources Conservation and Sustainable UtilizationGuangdong Provincial Key Laboratory of Applied BotanySouth China Botanical GardenChinese Academy of SciencesGuangzhou 510650China

Nine new compounds,including five natural rarely-occurring 2,3-dihydro-1H-indene derivatives named diaporindenes E−I(1−5),and four new benzophenone analogues named tenellones J−M(6−9)were isolated from the deep-sea sediment-derived fungus Phomopsis lithocarpus *** the structures for these new compounds were fully characterized on the basis of spectroscopic data,NMR spectra,and ECD calculation and single-crystal X-ray diffraction *** potential anti-tumor activities of compounds 1−9 against four tumor cell lines SF-268,MCF-7,HepG-2,and A549 were evaluated using the SRB *** 7 exhibited cytotoxic activity against the SF-268 cell line with an IC50 value of 11.36μmol·L^(−1).

关键词： Deep-see-derived fungus Phomopsis lithocarpus 2 3-Dihydro-1H-indene isomers Benzophenone derivatives

Prenylated stilbenes and flavonoids from the leaves of Cajanus cajan

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Chinese Journal of Natural Medicines 2019年第5期17卷 381-386页

作者： WU Gui-Yun ZHANG Xiao GUO Xue-Ying HUO Lu-Qiong liu hong-xin SHEN Xiao-Ling QIU Sheng-Xiang HU Ying-Jie TAN Hai-Bo Laboratory of Chinese Herbal Drug Discovery Institute of Tropical Medicine Guangzhou University of Chinese Medicine Key Laboratory of Plant Resources Conservation and Sustainable Utilization Guangdong Provincial Key Laboratory of Applied Botany South China Botanical Garden Chinese Academy of Sciences Guangdong Institute of Microbiology

Three new prenylated stilbenes, named as cajanusins A-C(1-3), and one new natural product cajanusin D(4), along with six known derivatives(5-10) were isolated from the leaves of Cajanus cajan. Their structures were fully elucidated by means of extensive spectroscopic methods and comparison with data in the reported literatures. The new compounds of 1 and 2 were evaluated for in vitro cytotoxic activities against a panel of human cancer cell lines.

关键词： Cajanus cajan Stilbenes Flavonoids Leguminosae

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相依风险的车险准备金评估

系统工程理论与实践 2015年第1期35卷 103-108页

作者：孟生旺刘新红中国人民大学应用统计科学研究中心北京100872 北京石油化工学院数理系北京102617

在多个业务线的准备金估计中,通常假设不同业务线之间相互独立,事实上它们之间往往存在一定的相依关系.它们的相依性可以通过藤Copula函数来描述.藤Copula是解决多个相依随机变量的强有力工具.本文在假设各个业务线的增量已决赔款服从... 详细信息

在多个业务线的准备金估计中,通常假设不同业务线之间相互独立,事实上它们之间往往存在一定的相依关系.它们的相依性可以通过藤Copula函数来描述.藤Copula是解决多个相依随机变量的强有力工具.本文在假设各个业务线的增量已决赔款服从伽玛分布、逆高斯分布和对数正态分布的基础上,建立了各个业务线增量已决赔款相互依赖的藤Copula回归模型,并将此模型应用于一组实际的车险数据,结果表明,考虑相依关系的藤Copula回归模型对准备金的评估结果要优于独立假设下的回归模型对准备金的评估结果.

关键词：车险准备金相依风险藤Copula

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单位与代际地位流动:单位制在衰落吗?

社会学研究 2004年第6期 52-63页

作者：余红刘欣华中科技大学新闻与信息传播系华中科技大学社会学系

This paper explores the continuality of effects of work unit in intergenerational mobility in urban China based on a 1996 survey data from Wuhan city. Statistical findings suggest that the sector, rank, and size of parents’ work unit have significant effects on that of their children’s first work unit since 1978, and this intergenerational inheritance of work unit is becoming more and more significant even after 1986 when dingti and neizhao policy was abolished. It also shows that through all history periods (1949-1966, 1966-1976, 1977-1986, and 1987-1996), despite of its increasing effects on occupational status, education has only relatively limited effects on the entrance to work units compared with that of parents’ work unit. The authors conclude that the effect of work unit on social mobility has not declined, on the contrary, it is, together with education, continuously playing a role in urban Chinese citizen status attainment.

关键词：单位制 “单位依附”理论中国就业代际地位职业地位

Design and Kinematic Analysis of a Driving Roller-type No-till Seeding and Hole-forming System

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Journal of Northeast Agricultural University(English Edition) 2019年第2期26卷 60-74页

作者： liu hong-xin Gai Guang-wei Su Hang Wang Deng-yu College of Engineering Northeast Agricultural University

Conventional no-till seeders should cut or remove crop straw and residue,when in operation and thus present a number of problems,including high performance requirements for the cutting component,high power consumption,dust raising and interference from intertwined *** view of this,in this study,a driving roller dibbling-type no-till seeding and hole-forming(DGR-NT-SHF)system was designed to be capable of penetrating soil and creating holes without requiring any special preparation of the surface *** core mechanism of this system consisted of a land wheel-driven driving roller and a duckbill-type roller seeder,which were internally tangent to one *** rotating roller rolled the straw into a thin layer,and the duckbills extended from the roller and penetrated this thin layer of straw and subsequently formed the holes and planted the *** on kinematic analysis,a mathematical model was established to depict the relations between the rear angle of the duckbill(α),the front angle of the duckbill(β),the angular velocity of the duckbill-type roller seeder(ω0),the angular velocity of the roller(ω1),and the aperture of the duckbill outlet on the roller(θ).In contrast to a driven roller-type no-till seeding and hole-forming DNR-NT-SHF system,several parameters of the DGR-NT-SHF system were established for planting seeds at a plant spacing that was an integral multiple of 100 mm:the radius of the duckbill-type roller seeder,200 mm;radius of the roller,400 mm;α,23°;andβ,5°.Based on the analysis of the models using the MATLAB Image Processing Module with a relation betweenω1 and the number of outlets on the roller as the constraint,the optimal number of outlets on the roller and theω1/ω0 ratio were determined to be 21 and 4/7,*** simulation on a digital prototype was performed using computer aided three-dimensional interactive application(CATIA)to observe the motion of the DGR-NT-SHF system,when the duckbills on the duckbill-type rol

关键词： no-till seeding hole-forming system driving roller kinematic analysis simulation

Research on Er3+:ZBLAN fiber laser based on composite F-P cavity

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Optoelectronics Letters 2020年第3期16卷 176-180页

作者： GU Xiao-kun LI Yong-liang YANG Chao liu hong-xin HU Wei-wei ZHANG Yi-peng ZHANG Ying-ming School of OptoElectronic Engineering Changchun University of Science and TechnologyChangchun 130022China

2μm/3μm laser has been extensively applied to the fields of medical treatment,communication and *** this paper,the genetic algorithm is innovatively used to solve the fiber power transmission equation,which improves the accuracy of simulation *** to the simulation results,a dual-wavelength Er^3+:ZBLAN fiber laser based on composite Fabry-Perot(F-P)cavity was designed and constructed.A stable continuous dual-wavelength output was obtained with a pump power of 50 *** center wavelengths were 2.79μm and 1.59μm,respectively,the maximum output powers were 8.19 W and 2.8 W,respectively,the slope efficiencies were 17.7%and 7.17%,respectively,and the stability of the wavelengths in 2 h were 4.6%and 3.1%,respectively.

关键词： fiber laser pump

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对花园庄M54出土编铙、石磬的考察报告

黄钟（武汉音乐学院学报） 2006年第2期 91-98页

作者：刘新红郑州大学音乐系

中国社会研究院考古研究所安阳工作站在殷墟宗庙宫殿区以南发掘到一座保存完整的高级贵族墓葬??54号墓。该墓随葬品极为丰富,共出土各类遗物570余件。这是殷墟发掘史上继妇好墓、郭家庄160号墓之后,所发现的又一座保存完整的高级贵族墓... 详细信息

中国社会研究院考古研究所安阳工作站在殷墟宗庙宫殿区以南发掘到一座保存完整的高级贵族墓葬??54号墓。该墓随葬品极为丰富,共出土各类遗物570余件。这是殷墟发掘史上继妇好墓、郭家庄160号墓之后,所发现的又一座保存完整的高级贵族墓葬。笔者应邀对该墓葬中出土的乐器———编铙(一套三件)及一件石磬进行了考察及测音,并作了初步的分析。

关键词：殷墟M54 编铙石磐考古测音

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企业社会保险缴费水平的实证评估

江西财经大学学报 2009年第1期 28-34页

作者：刘鑫宏中南财经政法大学公共管理学院湖北武汉430073

企业社会保险缴费水平指标化为企业社会保险缴费率总和。企业承担的社会保险费是企业劳动成本的重要组成部分。企业承担社会保险费的多少影响到企业新增价值的分解,企业社会保险缴费水平的定价依据来自于企业利润部分的扣除。经实证测... 详细信息

企业社会保险缴费水平指标化为企业社会保险缴费率总和。企业承担的社会保险费是企业劳动成本的重要组成部分。企业承担社会保险费的多少影响到企业新增价值的分解,企业社会保险缴费水平的定价依据来自于企业利润部分的扣除。经实证测算企业有能力承受法制性的社会保险费率区间为[0,18.68%]。通过修正缴费基数统计偏差,企业社会保险缴费水平最高限额约为44.0%,适度水平一般应维持在38.0%左右。测算结果显示,目前企业社会保险缴费率在较高水平上运行。

关键词：社会保险缴费水平企业平均利润率缴费基数