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Community Structure and Seasonal Variation of Soil Arthropods in the Forest-Steppe Ecotone of the Mountainous Region in Northern Hebei,China

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Journal of Mountain Science 2010年第2期7卷 187-196页

作者： ZHU Xinyu GAO Baojia YUAN Shengliang HU Yunchuan Institute of Mountain Hazards and Environment CAS Chengdu 610041 China Graduate university of the Chinese Academy of sciences Beijing 100039 China Hebei North university Zhangjiakou 075000 China Agricultural university ofHebei Baoding 071000 China

Soil fauna have been receiving more and more attention because they play an important role in nutrient ***,there is a lack of information on soil arthropods in the forest-steppe ecotone in the mountainous region of northern Hebei,which makes it difficult to meet the need of protecting biodiversity in this *** arthropod communities were investigated in the forest-steppe ecotone in northern Hebei province to provide basic information on changes in mountain soil fertility,which could promote the development of soil arthropod communities in mountain *** the preliminary identification,a total of 7994 individual soil arthropods were collected,which belonged to 25 groups,6 classes and 24 ***,Hymenoptera and Collembola were the dominant groups in the *** number of Acarina was higher than Collembola,and this phenomenon was obviously different from other areas in the same climate *** increased abundance of rare groups in the Forest zone with the richer vegetation,higher arthropod abundance and more substantial litter depth,could be interpreted as a reaction to the suitable soil environment and food *** these rare groups were sensitive to environmental changes,which could be regarded as biotic indicators for evaluating soil *** analysis of community diversity showed that the abundance index (d),the Shannon-Wiener index (H'),the evenness index (J) and the density-group index (DG) were significantly higher in the forest zone,lower in the forest-steppe zone,and lowest in the meadow-steppe *** variations in community composition correlated with changes in average air temperature and precipitation in this *** and individuals of soil arthropod communities in the three zones were present in greater numbers in the middle of the rainy season than in the early or late periods of the rainy season as a *** the same time,seasonal changes in soil arthropod communities from different plots were also

关键词： Soil arthropods Diversity Composition Ecotone Seasonal change

India's Development Potential:An Assessment

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Social sciences in China 2006年第1期27卷 185-186页

作者： Zhang Wenmu, Professor, center of Strategic Studies, Beijing university of Aeronautics and Astronautics Li Cunna

The comparative study of national development, if based only on superficial differences in the economic indexes of countries concerned to the neglect of structural comparison, will by no means yield accurate results. ... 详细信息

关键词：印度经济潜力经济结构产业政策

A Facile Approach for Synthesis of Sex Pheromone of California Red Scale

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Chemical Research in Chinese Universities 1993年第2期9卷 165-167页

作者： MAO Jian-min LI Yu-lin (State Key Laboratory of Applied Organic Chemistry, Lanzhou university, Lanzhou, 730000)LIANG Xiao-tian (Institute of Materia Medica, Chinese Academy of Medical sciences, Beijing, 100050) Present addres: School of Pharmaceutical sciences Beijing Medical university, Beijing, 100083.To whom correspondence should be addressed.

Introduction The isolation and structure of (3S, 6R)-3-methyl-6-isopropenyl-9-decen-1-yl acetate (1), one of the sex pheromones of the female California red scale, Aouidiella aurantii (Maskell), were reported by Roelo... 详细信息

关键词： Sex pheromone 3-Methyl-6-isopropenyl-9-decen-1-yl acetate Synthesis

BIOTRANSFORMATIONANDELIMINATIONOF1－NITROPYRENEINTHEISOLATEDPERFUSEDLUNG∶EFFECTSOFPRETREATINGRATSWITH

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药学学报 1996年第8期 10-18页

作者： FCP Law, SX He * and Y C Chui ** (Environmental Toxicology Program, Department of Biological sciences, Simon Fraser university, Burnaby, B C. Canada V5A 1S6)

将１５０μｇ１硝基芘（１ＮＰ）气管内或血管内给药后，对大鼠离体肺进行灌流，定时自灌流液中取样，以ＨＰＬＣ和ＧＣＭＳ测定并鉴定灌流液中未变的１ＮＰ及代谢物。经鉴定代谢物为单羟基硝基芘和二羟基硝基芘。两种途径给药... 详细信息

将１５０μｇ１硝基芘（１ＮＰ）气管内或血管内给药后，对大鼠离体肺进行灌流，定时自灌流液中取样，以ＨＰＬＣ和ＧＣＭＳ测定并鉴定灌流液中未变的１ＮＰ及代谢物。经鉴定代谢物为单羟基硝基芘和二羟基硝基芘。两种途径给药后，１ＮＰ在灌流液中的浓度—时间数据符合一室药代动力学模型。预先以β萘黄酮，苯并蒽或苯巴比妥和β萘黄酮的混合物处理后的大鼠，肺灌流结果表明，显著降低１ＮＰ的平均保留时间（ＭＲＴ），促进１ＮＰ的生物转化和气管给药后的吸收。以苯巴比妥预处理后的大鼠肺则对１ＮＰ的药代动力学参数无显著影响。

关键词：离体灌流肺 1硝基芘苯巴比妥 β萘黄酮苯并蒽

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公民社会与现代政治美学建构的传统

吉首大学学报(社会科学版) 2021年第1期 116-124页

作者：李咏吟浙江大学人文学院

政治学意义上的公民社会与公民权利概念的形成,奠定了现代政治美学的现实理论基础。从公民社会的审美活动出发,可以看到,审美主体的自由,能够得到充分的现实保证。这是因为公民社会的主体审美权利与主体审美人格的建构,已经由公民社会... 详细信息

政治学意义上的公民社会与公民权利概念的形成,奠定了现代政治美学的现实理论基础。从公民社会的审美活动出发,可以看到,审美主体的自由,能够得到充分的现实保证。这是因为公民社会的主体审美权利与主体审美人格的建构,已经由公民社会的法律普遍赋予了实践主体。公民社会的审美主体的自由生活实践,决定了文明生活理想不再是空想,而是公民社会生活的现实目标。

关键词：公民社会审美实践政治生活文明理想

Phenanthrene-degrading pathway of Agrobacterium sp. Phx1

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Science China Earth sciences 2005年第Z2期48卷 269-275页

作者： ZHANG Lei, YUAN Hongli, WANG Shuangqing & HUANG Huaizeng College of Biological sciences, Key Laboratory of Agro-Microbial Resource and Application, Ministry of Agriculture, China Agricultural university, Beijing 100094, China National Research center of Geoanalysis, Beijing 100037, China College of Biological sciences Key Laboratory of Agro-Microbial Resource and Application Ministry of Agriculture China Agricultural University Beijing 100094 China National Research center of Geoanalysis Beijing 100037 China

The metabolic pathway of phenanthrene-degrading strain Agrobacterium sp. Phx1 was investigated. Phx1 almost was able to transform 100 υg/mL of phenanthrene completely in 1 day in broth media of beef extract-peptone (BP), Luria-Bertani (LB) and mineral salts media (MS), and LB and BP could promote the growth and degradation efficiency of Phx1. The GC-MS was employed to analyze the metabolites of the 1st, 3rd, 7th days of phenanthrene degradation in MS. As a result, the 1-Hydroxy-2-naphthoic acid (1H2N) and 1-naphthol (NOL) were detected in the metabolites of the 1st day. Only NOL was observed on the 3rd day and it disappeared on the 7th day. The accumulated NOL did not pertain to the defined pathway of phenanthrene degradation by bacteria. The further HPLC study confirmed the finding in GC-MS analysis and found the production of catechol (CAT) from o-phthalic acid (OPA) in the phenanthrene metabolizing, which has never been reported in the defined degrading pathways. This production was also evidenced by the production of CAT using OPA as substrate. All of our results showed that the Agrobacterium sp. Phx1 had a novel phenanthrene-degrading pathway.

关键词： Agrobacterium, phenanthrene, metabolic pathway, 1-naphthol, o-phthalic.

Circumscription of Primula subgenus Auganthus (Primulaceae) based on chloroplast DNA sequences

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Journal of Systematics and Evolution 2010年第2期48卷 123-132页

作者： 1Hai-Fei YAN 2Chong-Hua HE 3Ching-I PENG 1Chi-Ming HU 2Gang HAO 1(South China Botanical Garden,Chinese Academy of sciences,Guangzhou 510650,China) 2(College of Life sciences,South China Agricultural university,Guangzhou 510642,China) 3(Research center for Biodiversity,Academia Sinica,Nankang,Taipei 115,China) (South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China) (College of Life sciences South China Agricultural University Guangzhou 510642 China) (Research center for Biodiversity Academia Sinica Nankang Taipei 115 China) *Correspondence: Gang HAO *Correspondence: *?Author for correspondence. Email: haogang@*** Tel.: 86-20-3860-4922 Fax: 86-20-8528-2180.

Recent molecular phylogenetic analyses of Primula have greatly enhanced our understanding of the infrageneric relationships of the genus,but the subgenera Auganthus and Carolinella remain meagerly sampled and poorly *** the present study,nucleotide sequence data of three chloroplast DNA regions (matK,rps16,and trnL-F) were used to infer phylogenetic relationships of the subgenera Auganthus and *** data were acquired and analyzed for 70 species of Primula and its close *** data matrix included 29 species (42%) of subgenus Auganthus and five species (50%) from subgenus *** analyses on these data showed that the sampled species of the subgenus Carolinella do not form a monophyletic clade,but are dispersed among the species of the subgenus ***,neither subgenus Auganthus nor Carolinella is monophyletic under their current *** distinctive calyptrate capsule that was previously used as a diagnostic criterion for subgenus Carolinella was inferred to have evolved multiple times in Primula based on the *** analysis also confirmed that Cortusa is nested within subgenus *** therefore suggest a revised circumscription of subgenus Auganthus to include subgenus Carolinella and the genus *** clades were identified with this broadly defined subgenus Auganthus by the phylogenetic analyses,but their relationships remain incompletely resolved.

关键词： Auganthus calyptrate capsule Carolinella circumscription Primula Primulaceae

Soil Respiration During a Soy bean-Growing Season

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Pedosphere 2006年第2期16卷 192-200页

作者： YANG Lan-Fang CAI Zu-Cong State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China）. School of Resources and Environmental Science Hubei University Wuhan 430062 （China） School of Environmental Studies China University of Geosciences Wuahn 430074 （China）

Soil respiration induced by soybean cultivation over its entire growing season and the factors influencing soil respiration were investigated to examine the seasonal pattern of soil respiration induced by soybean cultivation, explore soybean growth and photosynthesis on soil respiration, and determine the temperature dependence on soil respiration. Soil respiration in a pot experiment with and without soybean plants was sampled using the static chamber method and measured using gas chromatograph. Air temperature was a dominant factor controlling soil respiration rate in unplanted soil. Additionally, rhizosphere respiration comprised 62% to 98% of the soil respiration rate in the soybean-planted soil varying with the soybean growth stages. Harvesting aerial parts of soybean plant caused an immediate drop in the soil respiration rate at that stage. After harvesting the aerial parts of the soybean plant, a highly significant correlation between soil respiration rate and air temperature was found at the flowering stage （P 〈 0.01）, the pod stage （P 〈 0.01）, and the seed-filling stage （P 〈 0.05）. Thus, rhizosphere respiration during the soybean-growing period not only made a great contribution to soil respiration, but also determined the seasonal variation pattern of the soll respiration rate.

关键词： photosynthesis rhizosphere soil respiration soybean plant temperature effect

Study on purification and ultrastructure of a baculovirus in Penaeus chinensis

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Acta Oceanologica Sinica 1998年第4期17卷 495-502页

作者： Shi Tuo, Kong Jie, Bao Zhenmin, Liu Ping and Wang Chongming (Huanghai Sea Fisheries Research Institute, Qingdao 266071, China)Liang Xingming, (College of Marine Life sciences, Ocean university of Qingdao, Qingdao 266003, China) Huanghai Sea Fish. Res. Institute Qingdao 266071 China College of Marine Life sciences Ocean University of Qingdao Qingdao 266003 China

A kind of baculovirus was isolated from the cephalothorax homogenate of sick or morbid Penaeus chinensis by differential centrifugation and density gradient centrifugation. Electron microscopic examination of ultrathin section of the gills, stomach and mid-gut tissues also revealed the presence of rod-shaped baculoviral particles with the same size in the affected cell nuclei, where most of the virions arranging in cluster assembled and caused a series of cytopathic changes. The virion covered with bilaminal envelope was 320 ~ 400 nm × 100 ~ 130 nm in size, whereas the nucleocapsid ranged in size of 250~ 300 nm in length and 70 ~ 100 nm in breadth respectively. No nuclear polyhedron or granulin occlusion theies have been found in cells. According to the principle of viral classification, this newly found virus could probably belong to the non-occluded subgroup of insect baculoviridae, i. e., C subgroup baculovirus.

关键词： Penaeus chinensis non-occluded baculovirus isolation and purification electronic observation