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SEED COAT DEVELOPMENT AND ITS EVOLUTIONARY IMPLICATIONS IN DIPLOID AND AMPHIDIPLOID BRASSICA SPECIES

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SEED COAT DEVELOPMENT AND ITS EVOLUTIONARY IMPLICATIONS IN D...

湖北省遗传学会、江西省遗传学会2.06年学术年会暨学术讨论会

作者： CHANG-LI ZENG XIAO-MING WU JIAN-BO WANG Key Laboratory of MOE for Plant Developmental Biology, College of Life sciences, Wuhan university, Wuhan, {2.0072. China 2.College of Medicine and Life sciences, Jianghan university, Wuhan, {2.0056, China 3 Institute of Oil Crop Research, {{2. academy of Agricultural sciences, Wuhan, {2.0062. China

The variations in seed coat patterns are successfully employed in the establishment of evolutionary relationships. This research aimed to provide the evolutionary implications in the anatomy of developing seed coat in amphidiploid Brassica species. Thick sections (1-2.m) and microscope technology were used to study the development of seed coat structure in six species (15 accessions), three amphidiploids and their three diploid parents. Four types of epidermis layer, six types of subepidermis and nine types of palisade layer could be recognized during the whole developmental process of the seed coat The types of epidermis and subepidermis layer in diploids and amphidiploids changed similarly during the development of seed. Although there was little difference in the types of palisade layer among the accessions of diploids and amphidiploids at the early stages, many particular types appeared in these species at middle and later developmental stages. The development of palisade layer in amphidiploids varied complicatedly. Some accessions showed intermediate types in the palisade layer between the two putative parents, while others resembled only one of the two diploid ancestors. The developmental types of epidermis and subepidermis did not show the relationships between amphidiploids and diploids. However, the development in the types of the palisade layer could be acted as an excellent character that implied the seed coat evolution of amphidiploids.

关键词： Brassica, diploids and amphidiploids, seed coat anatomy, development, evolutionary implication.

Pollen Morphology and its Systematic and Ecological Significance in Rheum(Polygonaceae)from China

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Pollen Morphology and its Systematic and Ecological Signific...

第六届全国系统与进化植物学青年学术研讨会

作者： Yang Mei-Hua Zhang Da-Ming Zheng Jun-Hua Liu Jian-Quan(Laboratory of Systematic and Evolutionary Botany, Institute of Botany, the chinese academy of Science, Beijing 100093 School of Pharmaceutical {2., Peking university, Beijing 100083 Northwest Plateau Institute of Biology, the chinese academy of {2., Qinghai 810001)

Pollen morphology of 4. species of Rheum *** to eight sections,was investigated under LM and *** new exine pattems were found in the species:a)microechinate-foveolate b)rugulate,c)verrucate-perforte,andd)verrucate-rugulate *** addition,two pattems,the Rheum-type pollens with microechinate-perforate andfine-reticulate,as previously described,were also confirmed in the present *** on above study the evolutiontrends of pollen morphology in the taxa involved were discussed phylogenetically as *** microechinate-foveloate/perforate exine pattem exist commonly,the pattem is,therefore,regarded as the most primitive type,deriving from thebasic microechinate-foveolate/perforate pattem,and followed by the rugulate and verrucate-perforate ***

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smad2.and smad3 are required for mesendoderm induction and neural patterning in zebrafish

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smad2 and smad3 are required for mesendoderm induction and n...

2.10·第一届斑马鱼学术研讨会

作者： Shunji Jia~1,Di Wu~1,Cencan Xing~1,Anming Meng~(1,2.*) 1.Department of Biological sciences and Biotechnology,Tsinghua university,Beijing 10008{2. China 2.State Key Laboratory of Biomembrane and Membrane Engineering,Institute of Zoology, {2. academy of sciences,Beijing 100101,China

The *** Nodal,Activin,and Vg1 play important roles in mesendoderm induction and patterning during vertebrate *** ligands are believed to transduce the signal through the receptor-activated transcription factors Smad2....

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Synthesis,characterization and photoluminescence of aluminum N-aryloxo functionalized β-ketoiminate complexes

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Science Bulletin 2011年第14期 1482-1486页

作者： FENG Tao 1,PENG HongMei 1,YAO YingMing 1,ZHANG Yong 1,SHEN Qi 1 & CHENG YanXiang 2.1 Key Laboratory of Organic Synthesis of Jiangsu Province,College of Chemistry,Chemical Engineering and Materials Science,Soochow university,Suzhou 2.512.,China 2.State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,{2. {2. of {4.,Changchun 13002.,China

The synthesis,characterization and luminescent properties of aluminum complexes containing a dianionic N-aryloxo functionalized β-ketoiminate ligand are presented.4.(2.Hydroxy-5-R-phenyl)imino-2.pentanone (R=Me,L 1 H 2.R=tert-butyl,L 2.H 2. ligands reacted with AlEt 3 in tetrahydrofuran to give the aluminum complexes (L 1 AlEt) 2.(1) and (L 2.AlEt) 2.(2. in reasonable isolated yields.X-ray diffraction revealed that complexes 1 and 2.have solvent-free centrosymmetric dimeric structures,and each aluminum center has distorted trigonal bipyramidal *** room temperature,complexes 1 and 2.exhibit blue photoluminescence in acetonitrile with maximum emission wavelengths of 4.9 and 4.3 nm,respectively.

关键词： aluminum β-ketoiminate ligand synthesis structure photoluminescence

中国北方农牧交错区土地利用类型转换驱动因子分析

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水土保持学报 2004年第4期18卷 113-116页

作者：甘红刘彦随王静吴佩林中国科学院地理科学与资源研究所国土资源部土地利用重点实验室北京100029

依据TM影像解译的土地利用类型转换数据和社会经济数据,以地处中国北方农牧交错区的陕西省榆林市为例,分析了1990～2.00年土地利用类型转换的主要驱动因子。自然因子为海拔与坡度,人类驱动因子为治沙种草与造林、农业结构调整、土地退... 详细信息

依据TM影像解译的土地利用类型转换数据和社会经济数据,以地处中国北方农牧交错区的陕西省榆林市为例,分析了1990～2.00年土地利用类型转换的主要驱动因子。自然因子为海拔与坡度,人类驱动因子为治沙种草与造林、农业结构调整、土地退化、开垦耕地、建设用地和退耕还林(草);同时运用定性与定量相结合的方法,揭示了土地利用类型转换随海拔和坡度的规律性变化,以及生态建设驱动因子在榆林市土地利用类型转换中起着决定性作用。

关键词：中国北方地区农牧交错区土地利用转换驱动因子

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主动脉夹层CT血管成像标注专家共识

中华放射学杂志 2024年第3期58卷 250-257页

作者：中华医学会放射学分会心胸学组郑敏文吕滨金征宇刘士远许荆棘李小虎刘冰赵宏亮不详空军军医大学西京医院放射诊断科西安710032 中国医学科学院、北京协和医学院、国家心血管病中心、阜外医院放射影像科北京100037 中国医学科学院、北京协和医学院、北京协和医院放射科北京100730 海军军医大学第二附属医院放射诊断科上海200003 安徽医科大学第一附属医院医学影像科

主动脉夹层是严重威胁生命的心血管急症之一,CT血管成像(CTA)是诊断主动脉夹层的首选检查方法。将基于CTA图像的人工智能应用于主动脉夹层,有助于快速辅助诊断、评估疗效和预测术后风险等。影像人工智能最核心的部分是数据的标注,为了... 详细信息

主动脉夹层是严重威胁生命的心血管急症之一,CT血管成像(CTA)是诊断主动脉夹层的首选检查方法。将基于CTA图像的人工智能应用于主动脉夹层,有助于快速辅助诊断、评估疗效和预测术后风险等。影像人工智能最核心的部分是数据的标注,为了规范主动脉夹层CTA影像数据的标注,促进人工智能更好地落地临床,中华医学会放射学分会心胸学组及国内心血管影像专家编写了主动脉夹层CTA标注专家共识,从主动脉夹层的定义和分型,标注数据来源和储存要求,标注平台、工具和方式的选择,标注人员资质、培训和考核,标注后数据的质控,标注方法和内容,标注流程等各个方面达成共识,为建设规范化的主动脉夹层CTA影像标注数据库提供了有力的技术指导和质量保障,为主动脉夹层人工智能影像模型的构建、验证、优化及推广等提供研究基础,从而推动主动脉夹层人工智能影像真正落地临床应用,最终使患者受益。

关键词：体层摄影术 X线计算机主动脉夹层人工智能标注

ROS-friend or foe in cardiac protection against ischemia reperfusion injury

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中国病理生理杂志 2012年第11期 2021-2021页

作者： WANG Zhi-hua1,WU Lan1,CHEN Yi-xiong1,ZHANG Cai-mei1,ZHOU Zhao-nian2.YANG Huang-tian1(1Key Laboratory of Stem Cell Biology and Laboratory of Molecular Cardiology,Institute of Health sciences,Shanghai Institutes for Biological sciences,{2. academy of sciences & Shanghai Jiao Tong university School of Medicine,Shanghai 2.002.,China 2.aboratory of Hypoxic Cardiovascular Physiology,Shanghai Institutes for Biological sciences,{2. academy of sciences,Shanghai 2.0031,China)

AIM:Ischemic heart disease and lethal reperfusion injury upon reestablishment of blood flow remain a big challenge for clinicalcardiologists and basic *** discoveries of ischemic preconditioning(IPC)and postconditioni... 详细信息

关键词： ROS-friend or foe in cardiac protection against ischemia reperfusion injury AIM

Sensitivity of soils to acid rain in South China

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Journal of Environmental sciences 1990年第1期2卷 49-53页

作者： Huang Runhua, Yang Rong and Cao Hongfa1Peking university,Beijing 100871,China2.eijing Institute of Environmental Protection,Beijing 100037,China. 3chinese Research {2. of Environment Science,Beijing 100012.China.

This paper deals with the sensitivity of soils to acid rain in 5 provinces, South China. Based on field work and literature, and taking soil pH, CEC, and the types of residua into account, the authors classified the sensitivity into 4.categories: highly sensitive, sensitive, slightly sensitive, and non-sensitive. By overlapping the maps of soil pH, CEC, and types of residua, the map of soil sensitivity in South China has finally *** authors try to summarize the regularity of soil sensitivity to acid rain in this area. The sensitivity of different soil types in the studied area has also *** seriousness and its prospects of acid rain in this area have been pointed out in order to draw the attention of relevant authorities.

关键词： acid rain sensitivity of soils soil buffer capacity South China.

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突现对内源性选择注意的影响

心理科学 1999年第6期22卷 496-499页

作者：赵晨张侃杨华海中国科学院心理研究所北京100101 SchoolofInformation.theUnlversity of Michigan

本研究利用空间线索技术的实验模式，考察内源性选择注意与外源性选择注意的相互关系。实验结果表明，外周线索突现可以优先地被加工，但并不是完全高度自动化的；当注意受内源性中央线索引导集中到一个与突现刺激不一致的空间位置时，... 详细信息

本研究利用空间线索技术的实验模式，考察内源性选择注意与外源性选择注意的相互关系。实验结果表明，外周线索突现可以优先地被加工，但并不是完全高度自动化的；当注意受内源性中央线索引导集中到一个与突现刺激不一致的空间位置时，突现刺激不能引导出自动化的外源性选择注意。

关键词：内源性外源性选择性注意突现刺激