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tudies on Annual Wild Soybeans 被引量:2
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作者 Zhang Guodong 《Journal of Northeast Agricultural University(English Edition)》 CAS 1994年第1期9-19,共11页
关键词 WILD tudies on annual Wild Soybeans
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ANESTHESIOLOGY^(TM) 2013 Annual Meeting
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《中国现代神经疾病杂志》 CAS 2013年第9期823-,共1页
Time:October 12-16,2013Venue:Moscone Center,San Francisco,California,USA Website:https://www.asahq.org/Annual-Meeting.aspx The theme of ANESTHESIOLOGYTM2013 Annual Meeting is'Global Partners in Quality Outcomes an... Time:October 12-16,2013Venue:Moscone Center,San Francisco,California,USA Website:https://www.asahq.org/Annual-Meeting.aspx The theme of ANESTHESIOLOGYTM2013 Annual Meeting is'Global Partners in Quality Outcomes and Patient Safety',which offers a glimpse of what’s to come as the American Society of Anesthesiologists(ASA)hopes to share world expertise 展开更多
关键词 WWW ANESTHESIOLOGY annual Meeting ASA TM
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ASNO 2019 Annual Meeting
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《中国现代神经疾病杂志》 CAS 北大核心 2019年第5期353-353,共1页
Time:September 26-29,2019Venue:HNBK International Convention Center,Taipei,Taiwan,China Website:https://asno2019.tw/Asian Society of Neuro-Oncology(ASNO)2019 Annual Meeting will take place in HNBK International Conven... Time:September 26-29,2019Venue:HNBK International Convention Center,Taipei,Taiwan,China Website:https://asno2019.tw/Asian Society of Neuro-Oncology(ASNO)2019 Annual Meeting will take place in HNBK International Convention Center,Taipei,Taiwan,China on September 26-29,2019.ASNO invites neurosurgeons,neuro-oncologists,and researchers from around the world to submit abstracts for presentation at this meeting. 展开更多
关键词 HNBK annual Meetin
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American Epilepsy Society 2019 Annual Meeting
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《中国现代神经疾病杂志》 CAS 北大核心 2019年第6期457-457,共1页
Time:December 6-10,2019Venue:Baltimore Convention Center,Baltimore MD,USA Website:https://meeting.aesnet.org/American Epilepsy Society(AES)2019 Annual Meeting will take place in Baltimore Convention Center,Baltimore M... Time:December 6-10,2019Venue:Baltimore Convention Center,Baltimore MD,USA Website:https://meeting.aesnet.org/American Epilepsy Society(AES)2019 Annual Meeting will take place in Baltimore Convention Center,Baltimore MD,USA on December 6-10,2019.From best practices to breakthrough research,the AES 2019 Annual Meeting offers the most extensive education on everything epilepsy and an unparalleled opportunity to network with the brightest minds in the field. 展开更多
关键词 AMERICAN EPILEPSY SOCIETY 2019 annual Meeting BALTIMORE CONVENTION CENTER Venue:Baltimore CONVENTION Center Baltimore MD USA
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55th Annual Congress of Canadian Neurological Sciences Federation 2020
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《中国现代神经疾病杂志》 CAS 北大核心 2020年第3期229-229,共1页
Time:June 7-10,2020,Venue:Banff,Alberta,Canada,Website:http://congress.cnsfederation.org/The 55th Canadian Neurological Sciences Federation(CNSF)Congress 2020 will take place in Banff,Alberta,Canada on June7-10,2020.T... Time:June 7-10,2020,Venue:Banff,Alberta,Canada,Website:http://congress.cnsfederation.org/The 55th Canadian Neurological Sciences Federation(CNSF)Congress 2020 will take place in Banff,Alberta,Canada on June7-10,2020.This is a collegial meeting providing multidisciplinary courses relevant to all neuroscience specialties. 展开更多
关键词 annual Congress Canadian Neurological Sciences Canadian Neurological
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The 142nd Annual Meeting of American Neurological Association
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《中国现代神经疾病杂志》 CAS 2017年第7期533-533,共1页
Time:October 15-17,2017Venue:San Diego,California,USA Website:2017.myana.org Abstract deadline:September 11,2017The 142nd Annual Meeting of American Neurological Association(ANA2017)will be held on October 15-17,2017 in
关键词 of in The 142nd annual Meeting of American Neurological Association ANA
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ACTA MECHANICA SINICA 2010 ANNUAL SUBJECT INDEX
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《力学学报》 EI CSCD 北大核心 2011年第1期243-246,共4页
关键词 2010 LI ACTA MECHANICA SINICA 2010 annual SUBJECT INDEX
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2004 Annual Classification Index
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《西安交通大学学报》 EI CAS CSCD 北大核心 2004年第12期i010-i016,共7页
关键词 110 annual Classification Index
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The Annual Meeting of American Academy of Addiction Psychiatry 2017
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《中国现代神经疾病杂志》 CAS 2017年第7期533-533,共1页
Time:December 7-10,2017Venue:San Diego,California,USA Website:www.aaap.org/annual-meeting The Annual Meeting of American Academy of Addiction Psychiatry 2017 will be held on December 7-10,2017 in San Diego,California,... Time:December 7-10,2017Venue:San Diego,California,USA Website:www.aaap.org/annual-meeting The Annual Meeting of American Academy of Addiction Psychiatry 2017 will be held on December 7-10,2017 in San Diego,California,USA.The Annual Meeting and Scientific Symposium provide the latest scientific developments in addiction 展开更多
关键词 of The annual Meeting of American Academy of Addiction Psychiatry 2017 in
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Crops Responses to Inter-Annual Climate Variability in Agroclimatic Zone of Sub-Saharan Africa
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作者 Ayanlade Ayansina N.O.Adeoye +1 位作者 T.O.Odekunle I.O.Orinmogunje 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期119-119,共1页
Climate variability has become a decisive factor for the crop yields in Sub-Saharan African countries. Inter-annual variability in rainfall has been the key climatic element that determines the success of agriculture ... Climate variability has become a decisive factor for the crop yields in Sub-Saharan African countries. Inter-annual variability in rainfall has been the key climatic element that determines the success of agriculture in this region.From an analysis of recent rainfall conditions in West Africa,FAO(2001) concluded that a long-term change in rainfall has occurred in the semi-arid and sub-humid zones of West Africa.Thus,this study aims at assessing the vulnerability of crop yields to inter-annual variability in rainfall in sub-Saharan African countries taking Nigeria as a case study.A time series of the averaged value of the 12-Month Weighted Anomaly Standardized Precipita- 展开更多
关键词 INTER-annual climate variability crop yield VULNERABILITY RESPONSES WASP
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The 43rd Annual Meeting of the Society for Neuroscience
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《中国现代神经疾病杂志》 CAS 2013年第9期823-,共1页
Time:November 9-13,2013City:San Diega,California,USA Tel:(202)962-4000Website:http://www.sfn.org/annual-meeting/neuroscience-2013Neuroscience 2013 is the premier venue for neuroscientists to present emerging science,l... Time:November 9-13,2013City:San Diega,California,USA Tel:(202)962-4000Website:http://www.sfn.org/annual-meeting/neuroscience-2013Neuroscience 2013 is the premier venue for neuroscientists to present emerging science,learn from experts,forge collaborations with peers,explore new tools and technologies,and advance careers.Join more than 30 000 colleagues from more than 80 countries at the world’s largest marketplace of ideas and tools for global neuroscience.This year’s meeting will beheld 展开更多
关键词 The 43rd annual Meeting of the Society for Neuroscience THAN
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The 43rd Annual Meeting of the Society for Neuroscience
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《中国现代神经疾病杂志》 CAS 2013年第10期911-,共1页
Time:November 9-13,2013City:San Diega,California,USA Tel:(202)962-4000Website:http://www.sfn.org/annual-meeting/neuroscience-2013Neuroscience 2013 is the premier venue for neuroscientists to present emerging science,l... Time:November 9-13,2013City:San Diega,California,USA Tel:(202)962-4000Website:http://www.sfn.org/annual-meeting/neuroscience-2013Neuroscience 2013 is the premier venue for neuroscientists to present emerging science,learn from experts,forge collaborations with peers,explore new tools and technologies,and advance careers.Join more than 30 000 colleagues from more than 80 countries at the world’s largest marketplace of ideas and tools for global neuroscience.This year’s meeting will be held 展开更多
关键词 The 43rd annual Meeting of the Society for Neuroscience THAN
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TRANSFORM THE MECHANISM OF RENMINBI’S EXCHANGE RATE SYSTEM IN CONFORMITY WITH THE DEMAND OF MARKET ECONOMY——The academic report delivered at the Annual Meeting of NNCIFS on October 1993
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作者 Qian Rongkun NANKAI UNIVERSITY.Cui Yonglu 《南开经济研究》 CSSCI 北大核心 1994年第S1期2-11,共10页
Exchange rate functions under systems of centrallyplanned economy and market economy are quite different,and the mechanism to determine such exchange rate is alsodifferent. To adopt a socialist market economic system ... Exchange rate functions under systems of centrallyplanned economy and market economy are quite different,and the mechanism to determine such exchange rate is alsodifferent. To adopt a socialist market economic system inChina, the exchange rate mechanism of Renminbi must bethoroughly transformed. To accomplish this goal, I believethere are three problems that must be solved: first, 展开更多
关键词 rate TRANSFORM THE MECHANISM OF RENMINBI The academic report delivered at the annual Meeting of NNCIFS on October 1993 S EXCHANGE RATE SYSTEM IN CONFORMITY WITH THE DEMAND OF MARKET ECONOMY
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The 26th Annual International Symposium on Endovascular Therapy
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《中国现代神经疾病杂志》 CAS 2013年第12期1050-,共1页
Time:January 18-22,2014Venue:Fontainebleau Miami Beach,France Website:www.iset.org For more than two and a half decades,The International Symposium on Endovascular Therapy(ISET)has stood apart as a leader in endovascu... Time:January 18-22,2014Venue:Fontainebleau Miami Beach,France Website:www.iset.org For more than two and a half decades,The International Symposium on Endovascular Therapy(ISET)has stood apart as a leader in endovascular education.In 2014,the pioneering meeting that started it all will celebrate 26 years with 展开更多
关键词 The 26th annual International Symposium on Endovascular Therapy
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The 53rd annual meeting of the Japanese Association for Laboratory Animal Science
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作者 Yuzuru Kurabayashi 《中国实验动物学报》 CAS CSCD 2005年第S1期14-15,共2页
关键词 The 53rd annual meeting of the Japanese Association for Laboratory Animal Science
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Altimetry-observed semi-annual cycle in the South ChinaSea: Real signal or alias of K_1 tidal error?
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作者 HAN Guo-qi 《热带海洋学报》 CAS CSCD 北大核心 2009年第5期1-5,共5页
There have been a number of applications of satellite altimetry to seasonal and interannual sea level variability in the South China Sea. However, these applications usually exclude shallow waters along the coast, wit... There have been a number of applications of satellite altimetry to seasonal and interannual sea level variability in the South China Sea. However, these applications usually exclude shallow waters along the coast, with one of the concerns being large aliased tide-correction error. In this study the authors analyzed 14 years of merged satellite altimeter data to obtain the amplitude and phase of the semi-annual cycle and to examine the variation at the K1 alias frequency (close to the semi-annual frequency). The results indicate that the amplitude of the semi-annual cycle ranges from 3-7 cm, substantial compared with that of the annual cycle; while the amplitude at the K1 alias frequency (error of the K1 tidal correction) is essentially 1 cm only. Altimeter-derived semi-annual cycle is in good agreement with that from independent tide-gauge observations, pointing to the competent ability of satellite altimetry in observing semi-annual sea level variations in the South China Sea. 展开更多
关键词 海平面 高度测量 循环周期 卫星测量 中国南海
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氮肥周年优化对灌区饲用小黑麦-青贮玉米复种系统生产力的影响 被引量:2
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作者 张晓娟 魏娇娇 +5 位作者 陈彩锦 李雪雪 马宏秀 李凯 陈永伟 孙权 《草业学报》 北大核心 2025年第4期38-52,共15页
为了缓解宁夏季节性青饲料短缺和氮肥施用过量等草畜发展不平衡现状。开展秋播饲用小黑麦-青贮玉米复种模式及其周年氮肥合理施用研究,采用单因素随机区组设计,以秋播饲用小黑麦-青贮玉米复种系统为研究对象,设置5个周年优化施氮量,均... 为了缓解宁夏季节性青饲料短缺和氮肥施用过量等草畜发展不平衡现状。开展秋播饲用小黑麦-青贮玉米复种模式及其周年氮肥合理施用研究,采用单因素随机区组设计,以秋播饲用小黑麦-青贮玉米复种系统为研究对象,设置5个周年优化施氮量,均为纯氮水平(单位为kg‧hm^(-2)),分别为N_(1)(0 kg‧hm^(-2),CK)、N_(2)(150 kg‧hm^(-2))、N_(3)(300 kg‧hm^(-2))、N_(4)(450 kg‧hm^(-2))、N_(5)(600 kg‧hm^(-2)),系统研究氮肥周年优化对复种系统生产性能、营养品质及氮素利用率的影响。结果表明:氮肥周年优化施氮量对复种系统两种饲草株高、茎粗、SPAD值、干物质积累、产量和品质均有显著性影响。其中,两种饲草生长指标和干物质积累随着生育期的延长逐渐增大,小黑麦在开花期,青贮玉米在灌浆期各生长指标和干物质积累达到峰值,而随着施氮量的增加生长指标和干物质积累呈先升高后降低的趋势,但在N_(4)水平时呈下降趋势,整体表现为N_(4)>N_(5)>N_(3)>N_(2)>N_(1);复种系统鲜草产量随着周年施氮量的增加呈逐渐增加的趋势,N_(5)水平时产量最大,为156.8 t‧hm^(-2),比对照增产61.3%,干草产量随周年施氮量的增加呈先增加后降低的趋势,N_(4)水平时产量最大,为39.1 t‧hm^(-2),比对照增产45.9%,农学利用效率最高为30.2%;复种系统鲜草产量与青贮玉米鲜草产量显著正相关,干草产量与小黑麦干草产量极显著正相关,复种系统氮素利用率与青贮玉米中性洗涤纤维(NDF)极显著正相关,与酸性洗涤纤维(ADF)显著正相关。优化施氮量对饲草营养品质有显著影响,N_(4)水平下各营养指标表现最好,显著提高了饲用小黑麦、青贮玉米和复种系统粗蛋白(CP)和粗脂肪(EE)含量,其中,小黑麦、青贮玉米和复种系统CP含量比对照分别提高了33.7%、11.2%和31.8%,显著降低了ADF和NDF含量;经肥料效应方程模拟得出,宁夏引黄灌区饲用小黑麦-青贮玉米饲草复种系统最高产量施肥量为560 kg‧hm^(-2),最佳经济效益施肥量为584 kg‧hm^(-2),可为灌区饲草复种科学栽培提供理论依据。 展开更多
关键词 氮肥周年优化 灌区 饲草 复种系统 生产力
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2012—2023年中国居民健康素养水平分析 被引量:1
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作者 李英华 李莉 王兰兰 《中国健康教育》 北大核心 2025年第5期426-430,共5页
目的分析2012—2023年我国居民健康素养水平变化趋势,为健康素养促进政策制定提供依据。方法利用全国健康素养监测数据进行分析。结果监测结果显示,我国居民健康素养水平从2012年的8.80%提升至2023年的29.70%,增长幅度为20.90个百分点,... 目的分析2012—2023年我国居民健康素养水平变化趋势,为健康素养促进政策制定提供依据。方法利用全国健康素养监测数据进行分析。结果监测结果显示,我国居民健康素养水平从2012年的8.80%提升至2023年的29.70%,增长幅度为20.90个百分点,平均年增长幅度为1.90个百分点,平均年增长速度为11.69%。从城乡分布来看,城市居民健康素养水平平均年增长幅度为1.95个百分点,平均年增长速度为9.88%,农村居民平均年增长幅度1.74个百分点,平均年增长速度为12.57%,城乡差距趋于减小。从地区分布来看,东部地区居民健康素养水平平均年增长幅度最大,为2.09个百分点,西部地区平均年增长速度最大,为12.24%,西部地区与东部地区差距趋于减小。从性别分布来看,男性健康素养水平平均年增长幅度和平均年增长速度均高于女性,分别为1.93个百分点和12.03%。从年龄分布来看,15~<25岁组平均年增长速度最大,为13.43%;65~<70岁组平均年增长速度最小,为6.52%。从文化程度分布来看,平均年增长幅度最大者为大专及以上人群,平均年增长幅度为2.70个百分点;平均年增长速度最大者为初中组,平均年增长速度为10.66%;不识字/少识字人群健康素养水平各项指标均处于最低水平,平均年增长幅度为0.08个百分点,平均年增长速度为2.65%。结论11年来,我国城乡居民健康素养水平有较大幅度提升,但仍存在较大提升空间,存在城乡、地区及人群间的不平衡。 展开更多
关键词 中国居民 健康素养水平 平均年增长幅度 平均年增长速度 趋势分析
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1956-2016年中国降水量时空分布规律及变化特征 被引量:3
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作者 李原园 李云玲 +2 位作者 郭旭宁 潘扎荣 刘为锋 《水科学进展》 北大核心 2025年第1期1-17,共17页
为应对气候变化背景下降水时空演变对经济社会发展和生态环境保护带来的挑战,基于第三次全国水资源调查评价1956—2016年逐月降水量观测数据,全面剖析了降水量在全国、水资源一级区、省级行政区的空间分布规律以及年际变化、年内分配等... 为应对气候变化背景下降水时空演变对经济社会发展和生态环境保护带来的挑战,基于第三次全国水资源调查评价1956—2016年逐月降水量观测数据,全面剖析了降水量在全国、水资源一级区、省级行政区的空间分布规律以及年际变化、年内分配等时间分布特征,探讨了降水时空分布的变化趋势。结果表明:中国南方地区多年平均年降水深为1215.1 mm,北方地区仅为329.3 mm;各水资源一级区均出现连枯连丰现象,降水量越少的区域年际变化越显著;北方地区连续最大4个月降水量占多年平均年降水量的70%~80%,南方地区则占50%~65%;1956—2016年全国降水量呈现出丰枯交替的现象,整体变化趋势未发生明显变化。 展开更多
关键词 降水量 时空分布 年际变化 年内分配 变化趋势
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基于热泵技术的PVC干燥尾气的低温余热利用研究 被引量:1
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作者 杨德明 张宇 代志先 《现代化工》 北大核心 2025年第2期226-231,共6页
鉴于PVC干燥过程的高能耗特点,把MVR热泵、吸收式热泵及高温热泵等节能技术应用于PVC的干燥过程,在传统干燥工艺的基础上,提出了MVR耦合吸收式热泵及高温热泵2种节能干燥工艺。以热泵系统的性能系数(COP)、干燥过程的能耗及年总成本(ATC... 鉴于PVC干燥过程的高能耗特点,把MVR热泵、吸收式热泵及高温热泵等节能技术应用于PVC的干燥过程,在传统干燥工艺的基础上,提出了MVR耦合吸收式热泵及高温热泵2种节能干燥工艺。以热泵系统的性能系数(COP)、干燥过程的能耗及年总成本(ATC)等作为评价指标,对提出的节能干燥工艺进行模拟与优化。研究结果表明,PVC干燥尾气的排烟温度为27℃,传统干燥工艺中约29.8%的低温余热未被利用。与传统干燥工艺相比,MVR耦合溴化锂吸收式热泵干燥工艺能耗降低了27.9%,ATC节省了15.7%。高温热泵系统最有效的循环工质为R718,该干燥工艺要比传统干燥工艺节能52.6%,节省ATC约40.0%,且高温热泵干燥系统的COP要比MVR耦合溴化锂吸收式热泵系统的COP高出4.4,因此高温热泵干燥工艺用于PVC的干燥更具技术和经济优势。 展开更多
关键词 PVC干燥 热泵 低温余热 能耗 年总成本
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