检索结果-南通市图书馆

维普期刊数据库博看期刊

Management of re‐established artificial grasslands via grazing or fencing: Effects on plant and soil properties

在线全文

学校读者我要写书评

暂无评论

Grassland Research 2023年第1期2卷 69-83页

作者： Jing Cao Yiping chen Yao Jiang jingshu chen Junhua Wu State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi'anChina University of Chinese Academy of Sciences BeijingChina Xi'an Institute for Innovative Earth Environment Research Xi'anChina

Background:Revegetation is widely used in degraded grassland ***,the responses of grassland plant and soil properties to fencing(FC)and grazing(GZ)remain poorly understood,especially the vegetation–soil coupling coordination(C_(d))*** study explored single and interactive responses of vegetation and soil properties under FC and GZ after ***:A field experiment with FC and GZ treatments was conducted in Loess Plateau reconstructed grassland,with degraded grassland as the control(CK).Plant and soil properties and C_(d) were analyzed using the analytic hierarchy process(AHP)and principal component analysis(PCA).Results:The order of soil comprehensive evaluation(SCE)was GZ>FC>CK,while that of vegetation comprehensive evaluation(VCE)was FC>GZ>*** C_(d) of CK was 0.39(mild imbalance),while the values of FC and GZ were 0.57 and 0.54,respectively(little coordination).The VCE/SCE of FC was 1.48(soil lag type),and the values of GZ and CK were 0.69 and 0.35,respectively(vegetation lag and vegetation loss type,respectively).Conclusions:Both GZ and FC improved C_(d) and facilitated ***,degraded grasslands should be restored via moderate grazing for sustainable ecological and economic development.

关键词： degraded artificial grassland grazing and fencing revegetation vegetation-soil coupling coordination

Prisoners' Dilemma Supergame on Rectangle Lattice

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Applied Sciences 2013年第1期3卷 7-11页

作者： Zhongxing Ye jingshu chen 1School of Business Information Management Shanghai Institute of Foreign Trade Shanghai China 2Department of Mathematics Shanghai Jiao Tong University Shanghai China Department of Management Science and Engineering Stanford University Stanford USA

In this paper a class of large supergames, i.e., infinitely repeated games played by many players are studied. The players located on the vertex set of planar rectangle lattice play several basic games with his neighbors. The basic game is two-person prisoners’ dilemma game with asymmetric payoffs. Under the conditions of the pre-specified updating rules and the transition probabilities, the relevant stochastic process of strategy evolution forms a Markovian process. The simulation results about the long-run behavior are provided.

关键词： Prisoners' Dilemma Supergame Planar Rectangle Lattice Markov Process Invariant Measure Equilibrium

Solid polymer electrolyte-based high areal capacity all-solid-state batteries enabled with ceramic interlayers

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第10期17卷 8803-8808页

作者： chenji Hu Daiqian chen Yage Huang Guoyong Xue Xi Liu jingshu Wang Jun Ma Bowen chen Qi chen Linsen Li Yanbin Shen Liwei chen School of Chemistry and Chemical Engineering in-situ Center for Physical SciencesShanghai Electrochemical Energy Device Research Center(SEED)and Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai 200240China i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123China IDONANO Co Ltd Shanghai 201614China Future Battery Research Center Global Institute of Future TechnologyShanghai Jiao Tong UniversityShanghai 200240China

Solid polymer electrolytes(SPEs)based all-solid-state batteries(ASSBs)have attracted extensive attention as a promising candidate for next-generation energy storage *** ASSBs require high fabrication pressure to achieve high areal capacity,under which,however,SPEs struggle and risk damage or failure due to their low mechanical *** is also a lack of study on complex stress and strain SPEs experience during ASSB cell assembly ***,ceramic solid electrolytes are selected as interlayers to address the stress-strain conditions during *** a result,high areal capacity ASSBs with a LiCoO2 loading of 12 mg·cm^(-2) were assembled with SPE-based composite *** 200 cycles were carried out for these cells at a current density of 1 mA·cm^(-2) under room *** capacity decay of the battery at 200 cycles is observed to be as low as 0.06% per *** work identifies a critical issue for application of SPEs in ASSBs and provides a potential strategy for the design of SPE-based ASSBs with high specific energy and long cycle life.

关键词： all-solid-state batteries ceramic interlayer solid polymer electrolyte high areal capacity

Effects of magnesium on the performance of sows and their piglets

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2015年第1期6卷 55-62页

作者： Jianjun Zang jingshu chen Ji Tian Aina Wang Hong Liu Shengdi Hu Xiangrong Che Yongxi Ma Junjun Wang Chunlin Wang Guanghua Du Xi Ma State Key Laboratory of Animal Nutrition Ministry of Agriculture Feed Industry CentreChina Agricultural University Weifang Business Vocational College College of Animal Science and Veterinary Medicine Shanxi Agricultural University

The objective of this study was to evaluate the effects of supplemental magnesium （Mg） on the performance of gilts and parity 3 sows and their piglets. Fifty-six grits （Trial 1） and 56 sows （Trial 2） were assigned to one of 4 treatments according to their mating weight, respectively. The treatments comprised corn-soybean meal based gestation and lactation diets （0.21% magnesium） supplemented with 0, 0.015, 0.03, or 0.045% Mg from mating until weaning. The results showed that magnesium supplementation significantly （P 〈 0.05） reduced the weaning to estrus interval in both gilts and sows. There were significant effects （P 〈 0.05） of supplemental magnesium on the total number of piglets born, born alive and weaned in sows. In late gestation and lactation, the digestibility of crude fiber （quadratic effects, P 〈 0.05）, and crude protein （P 〈 0.05）, were significantly influenced by magnesium in gilts and sows, respectively. There were differences among the 4 groups in terms of the apparent digestibility of dry matter and crude fiber in sows （P 〈 0.0S） during both early and late gestation. The apparent digestibility of gross energy was increased for sows in late gestation （P 〈 0.05）, and lactation （quadratic effects, P 〈 0.0S）. At farrowing and weaning, serum prolactin levels and alkaline phosphate activities linearly increased in sows as the Mg supplementation increased （P 〈 0.0.5）. Serum Mg of sows at farrowing and serum urea nitrogen of sows at weaning was significantly influenced by Mg supplementation （P 〈 0.05）. The Mg concentration in sow colostrum and the serum of their piglets were increased by supplemental magnesium （P 〈 0.05）. In addition, growth hormone levels were linearly elevated （P 〈 0.05） in the serum of piglets suckling sows. Our data demonstrated that supplemental magnesium has the potential to improve the reproduction performance of sows, and the suitable supplemental dose ranged from 0.015% to 0.03%.

关键词： Gilts Magnesium Piglets Reproduction Sows

Genome wide investigation of Hsf gene family in Phoebe bournei:identification,evolution,and expression after abiotic stresses

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2024年第5期35卷 201-215页

作者： Wenhai Liao Xinghao Tang jingshu Li Qiumian Zheng Ting Wang Shengze cheng Shiping chen Shijiang Cao Guangqiu Cao College of Forestry Fujian Agriculture and Forestry UniversityFuzhou 350002People’s Republic of China University Key Laboratory of Forest Stress Physiology Ecology and Molecular Biology of Fujian ProvinceFuzhou 350002People’s Republic of China Fujian Academy of Forestry Sciences Fuzhou 350002People’s Republic of China College of Plant Protection Fujian Agriculture and Forestry UniversityFuzhou 350002People’s Republic of China

Heat shock transcription factors(Hsfs)have important roles during plant growth and development and responses to abiotic *** identification and func-tion of Hsf genes have been thoroughly studied in various herbaceous plant species,but not woody species,especially Phoebe bournei,an endangered,unique species in *** this study,17 members of the Hsf gene family were identi-fied from *** using bioinformatic ***-netic analysis indicated that PbHsf genes were grouped into three subfamilies:A,B,and *** motifs,three-dimensional structure,and physicochemical properties of the PbHsf proteins were also *** structure of the PbHsf genes varied in the number of exons and ***-diction of cis-acting elements in the promoter region indi-cated that PbHsf genes are likely involved in responses to plant hormones and stresses.A collinearity analysis dem-onstrated that expansions of the PbHsf gene family mainly take place via segmental *** expression levels of PbHsf genes varied across different plant *** the basis of the expression profiles of five representative PbHsf genes during heat,cold,salt,and drought stress,PbHsf pro-teins seem to have multiple functions depending on the type of abiotic *** systematic,genome-wide investigation of PbHsf genes in *** and their expression patterns provides valuable insights and information for further func-tional dissection of Hsf proteins in this endangered,unique species.

关键词： Phoebe bournei Hsf gene family Evolutionary analysis Expression mechanism Abiotic stresses

在线全文

学校读者我要写书评

暂无评论

女性与权力:休闲运动带来的身体审美转变

成都体育学院学报 2019年第2期45卷 44-48页

作者：陈静姝成都体育学院休闲体育系

身体作为当今文化关注的重点,不仅塑造着人类的生活方式与精神态度,同时与权力有着密切的联系。女性要抵抗以男权为主的社会意识形态,身体审美认知是关键。培育更强的身体审美意识和能力对于女性而言,有利于帮助其解放被奴役的主体,使... 详细信息

身体作为当今文化关注的重点,不仅塑造着人类的生活方式与精神态度,同时与权力有着密切的联系。女性要抵抗以男权为主的社会意识形态,身体审美认知是关键。培育更强的身体审美意识和能力对于女性而言,有利于帮助其解放被奴役的主体,使女性获得与男性同样平等的权利和自由。文章以休闲运动为切入点,强调了休闲运动对女性身体审美的重要性。从女性表象性身体美学与经验性身体美学融合的角度,讨论了休闲运动中女权与身体审美的回归。并从女性身体的三个维度探究了休闲运动对女性身体审美的再塑造,形成新的身体审美意向与自我认识。通过休闲运动培育女性正确的身体审美意识,提高女性身体审美能力,旨在帮助女性获得权力,使女性从压抑的男权主义和性崇拜文化中解放出来。

关键词：女性身体审美休闲运动权力

在线全文

学校读者我要写书评

暂无评论

韧性城市理论下河流蓝绿空间融合策略研究

规划师 2020年第14期36卷 5-10页

作者：陈竞姝上海同济城市规划设计研究院有限公司

在韧性城市理论的指引下,荷兰、英国等国家陆续采用更为弹性的策略提高河流廊道的韧性,并与国土管理结合,给予河流更大空间。而我国河流蓝线、滨水绿线等规划和管控方式固定了河流的防洪线与生态线,蓝绿空间难以扩展,城市缺乏韧性。基于... 详细信息

在韧性城市理论的指引下,荷兰、英国等国家陆续采用更为弹性的策略提高河流廊道的韧性,并与国土管理结合,给予河流更大空间。而我国河流蓝线、滨水绿线等规划和管控方式固定了河流的防洪线与生态线,蓝绿空间难以扩展,城市缺乏韧性。基于此,文章在总结国内外韧性河流理论和实践的基础上,以蓝绿空间作为整体,建构河流廊道的韧性框架;归纳相关韧性要素,将河流廊道作为城市韧性设施的主轴,并通过可被量化的指标来评估和引导其建设。

关键词：韧性城市河流生态廊道蓝绿线空间规划

在线全文

学校读者我要写书评

暂无评论

太平天国档案工作研究综述

档案与建设 2013年第8期 10-13页

作者：赵彦昌陈婧曙辽宁大学历史学院辽宁沈阳110036

文章以建国后我国对太平天国档案研究的发展历程为基点,对其各个方面作简要介绍,如太平天国档案概述、保藏情况、管理工作、整理工作等,通过对以上问题的具体叙述,以期为我国太平天国档案研究的发展历程理清思路,从而为今后太平天国档... 详细信息

文章以建国后我国对太平天国档案研究的发展历程为基点,对其各个方面作简要介绍,如太平天国档案概述、保藏情况、管理工作、整理工作等,通过对以上问题的具体叙述,以期为我国太平天国档案研究的发展历程理清思路,从而为今后太平天国档案研究的发展提供有效借鉴。

关键词：太平天国档案编纂

在线全文

学校读者我要写书评

暂无评论

区位空间审视下的城市设计路径探讨

建筑与文化 2022年第1期 50-51页

作者：陈婧淑安徽建筑大学建筑与规划学院

区位是指人类行为活动的空间,而区位论则是反映人与空间中各种事物的相互作用关系,以及为达到某一行为该如何正确高效地选择合适的区位,这就是区位选择的重要性。城市设计中,对区位的审视与分析古已有之,已然成为设计中不可或缺的组成部... 详细信息

区位是指人类行为活动的空间,而区位论则是反映人与空间中各种事物的相互作用关系,以及为达到某一行为该如何正确高效地选择合适的区位,这就是区位选择的重要性。城市设计中,对区位的审视与分析古已有之,已然成为设计中不可或缺的组成部分,但对于区位的审视具体应该审视什么、把握什么以及如何审视才能使得区位于城市设计而言不止是徒有其表的"分析套路",而是真正有益于设计的点睛之笔。文章以《安徽池杉生态湿地公园门景建筑创作城市设计》为例,力求探讨区位空间审视下的城市设计路径,旨在使得设计彰显意象特质,突出城市特色,具有较高的艺术审美价值。

关键词：区位论区位空间审视城市设计路径

维普期刊数据库博看期刊