检索结果-南通市图书馆

Fate of Nitrogen from Organic and Inorganic Sources in Rice-Wheat Rotation Cropping System

Agricultural Sciences in China 2010年第7期9卷 1017-1025页

作者： CHEN Yi,WU Chun-yan,TANG Xu,yanG Sheng-mao and WANG Jia-yu Institute of Environmental Resources and Soil Fertilizer,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,P.R.China [a] Institute of Environmental Resources and Soil Fertilizer Zhejiang Academy of Agricultural Sciences Hangzhou 310021 P.R. China

The lower availability of N is one of the most important limiting factors impeding crop yield enhancement among the various factors that affect crop yield under the multiple-cropping agroecosystem in *** this study,the recovery of a single application of 15N-labeled fertilizer or residues in rice-wheat cropping system was determined,in order to provide theoretical foundation for the nitrogen management in sustainable agricultural production.A continuous trace experiment was conducted for 15N microplots by using randomized block design with four treatments and four replications（T1 = 15N-labeled fertilizer with crop residue incorporation,T2 = 15N-labeled residues,T3 = 14N fertilizer to generate unlabeled crop residue,and T4 = 15Nlabeled fertilizer without crop residue incorporation）.Our results showed that,on average,17.17 and 12.01% of crop N was derived from N fertilizer and 15N-labeled residues,respectively during the first growing season,suggesting that approximately 82.83 or 87.99% of crop N was derived directly from soil N *** was a larger difference in the 15N recovery pattern in crop when N was applied as fertilizer or residues,i.e.,most of crop N derived from N fertilizer was absorbed in the first growing season（92.04%）,and the relevant value was 38.03% when 15N-labeled residues were *** implied that most of N fertilizer was recovered in the present cropping season,while a longer residue effect will be found for 15N-labeled ***,the average recovery of N fertilizer and N residue in the soil after the first growing season was 33.46 and 85.64%,*** recovery of applied N in soil when N was applied as residues was significantly higher than that when N was applied as *** was a larger difference in the total 15N recovery in plant and soil when N was applied as fertilizer or *** the end of the fifth or sixth cropping season,the total 15N recovery in plant and soil when N was applied as fertilizer or resi

关键词： crop residue fertilizer fate 15N isotope nitrogen fertilizer rice field

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Magnetic resonance diffusion tensor imaging with fluorescein sodium dyeing for surgery of gliomas in brain motor functional areas

引用

Chinese Medical Journal 2013年第13期126卷 2418-2423页

作者： LIU Jia-gang yanG Shuai-feng LIU yan-hui WANG Xiang mao Qing Department of Neurosurgery West China Hospital SichuanUniversity Chengdu 610041 China (Liu JG Yang SF Liu YH Wang

Background Tumor surgery in brain motor functional areas remains challenging. Novel techniques are being developed to gain maximal and safe resection for brain tumor surgery. Herein, we assessed the magnetic resonance diffusion tensor imaging （MR-DTI） and fluorescein sodium dyeing （FLS） guiding technique for surgery of glioma located in brain motor functional areas. Methods Totally 83 patients were enrolled according to our inclusion and exclusion criteria （56 patients in experimental group, 27 patients in control group）. In the experimental group, the surgical approach was designed by DTI imaging, which showed the relationship between the tumor and motor tract. The range of resection in the operation was determined using the FLS-stained area, which recognized the tumor and its infiltrated tissue. The traditional routine method was used in the control group. Postoperatively, all patients underwent enhanced brain MRI within 72 hours to ascertain the extent of resection. Patients were followed in our outpatient clinic over 6-24 months. Neurological deficits and Karnofsky scoring （KPS） were evaluated. Results There were no significant differences in balance test indexes of preoperative data （sex, age, lesion location and volume, and neurological deficits before operation） and diagnosis of histopathology between the two groups. There was a trend in the experimental group for greater rates of gross total resection （80.4% vs. 40.7%）, and the paralysis rate caused by surgery was lower in experimental （25.0%） vs. control （66.7%） groups （P 〈0.05）. The 6-month KPS in the low-grade and high-grade gliomas was 91＋11 and 73＋26, respectively, in the experimental group vs. 82＋9 and 43＋27, respectively, in the control group （P 〈0.05 for both）. Conclusions MR-DTI and FLS dye guiding for surgery of glioma located in brain motor functional areas can increase the gross total resection rate, decrease the paralysis rate caused by surgery, and improve patient quality of life compared with

关键词： glioma magnetic resonance diffusion tensor imaging fluorescein sodium dyeing brain motor functional area

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Connecting the Dots in Self-Supervised Learning:A Brief Survey for Beginners

引用

Journal of Computer Science & Technology 2022年第3期37卷 507-526页

作者： Peng-Fei Fang Xian Li yang yan Shuai Zhang Qi-Yue Kang xiao-Fei Li Zhen-Zhong Lan School of Engineering WestLake UniversityHangzhou 310030China College of Engineering and Computer Science Australian National UniversityCanberraACT 2601Australia College of Computer Science and Technology Zhejiang UniversityHangzhou 310027China

The artificial intelligence(AI)community has recently made tremendous progress in developing self-supervised learning(SSL)algorithms that can learn high-quality data representations from massive amounts of unlabeled *** methods brought great results even to the fields outside of *** to the joint efforts of researchers in various areas,new SSL methods come out ***,such a sheer number of publications make it difficult for beginners to see clearly how the subject *** survey bridges this gap by carefully selecting a small portion of papers that we believe are milestones or essential *** see these researches as the"dots"of SSL and connect them through how they ***,by viewing the connections of these dots,readers will have a high-level picture of the development of SSL across multiple disciplines including natural language processing,computer vision,graph learning,audio processing,and protein learning.

关键词： artificial intelligence(AI) dot self-supervised learning(SSL) survey

来源：

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

A randomized, open-label, multicentre study to evaluate plasma atherosclerotic biomarkers in patients with type 2 diabetes mellitus and arteriosclerosis obliterans when treated with Probucol and Cilostazol

引用

Journal of Geriatric Cardiology 2012年第3期9卷 228-236页

作者： xiao-Wei Ma xiao-Hui Guo Xin-Hua xiao Li-Xin Guo xiao-Feng Lv Quan-Min Li yan Gao Department of Endocrinology Peking University First Hospital No. 7 of Xishiku Street Xicheng District Beijing 100034 China Department of Endocrinology Peking Union Medical College Hospital No.1 Shuaifuyuan Dongcheng District Beijing 100005 China Department of Endocrinology Peking Hospital No. 1 Dahua Road Dongdan Dongcheng District Beijing 100730 China Department of Endocrinology Military General Hospital of Peking PLA No.5 Nanmencang Dongsishitiao Dongcheng District Beifing 100070 China Department of Endocrinology Second Artillery Forces General Hospital of Peking PLA No.16 Xinjiekouwai Street Xicheng District Beijing 100088 China

Objectives To evaluate the plasma atherosclerotic biomarkers in patients with type 2 diabetes mellitus （T2DM） and arteriosclerosis obliteran （ASO） when treated with Probucol plus Cilostazol in combination and individually. Methods In this open-label study, patients aged 40-75 years were randomized to receive conventional therapy alone, or with Cilostazol 100 mg bid, or with Probucol 250 mg bid, or with both in combination. Endpoints included changes in plasma biomarker and safety at 12 weeks. Results Of the 200 randomized pati- ents, 165 for per-protocol and 160 for the safety （QTc intervals） were set, respectively. Probucol significantly reduced total cholesterol （P 〈 0.001）, low-density lipoprotein cholesterol （LDL-C）, （P = 0.01）, and high-density lipoprotein cholesterol （HDL-C）（P 〈 0.001） compared with conventional therapy. Cilostazol was effective in increasing HDL-C （P = 0.002） and reducing triglycerides levels （P 〈 0.01） compared with conventional therapy. A trend towards significance was observed for the difference between conventional therapy alone and Probucol plus Cilostazol group for the change in oxidized low-density lipoprotein （Ox-LDL, P = 0.065）. No significant effects on the majority of the remaining biomarkers were found across the treatment groups. Conclusions We have confirmed that Ox-LDL could be a possible plasma atherosclerotic biomarker among the evaluated biomarkers, which reflected the synergetic effect of Cilostazol plus Probucol in patients with T2DM and ASO shown previously in preclinical studies.

关键词： Cilostazol Probucol Combination treatment Atherosclerosis Biomarkers Synergetic effect

来源：

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

牙转矩及其临床意义

引用

上海口腔医学 2009年第6期18卷 656-660页

作者：毛晓燕陈丹鹏上海交通大学医学院附属第一人民医院口腔科上海200080

转矩是指牙的临床冠长轴与平面垂线间的夹角,反映了牙的唇(颊)舌向的倾斜度。转矩的大小与人种有关,不同垂直、矢状骨面型会对转矩产生代偿。转矩对于建立良好的咬合关系,达到功能、美观、稳定的正畸治疗目标具有重要作用。直丝弓托... 详细信息

转矩是指牙的临床冠长轴与平面垂线间的夹角,反映了牙的唇(颊)舌向的倾斜度。转矩的大小与人种有关,不同垂直、矢状骨面型会对转矩产生代偿。转矩对于建立良好的咬合关系,达到功能、美观、稳定的正畸治疗目标具有重要作用。直丝弓托槽的转矩设计的基础是正常的转矩。由于参照人群和矫治理念的不同,不同体系的矫治器间转矩设计存在较大差异。本文就转矩的影响因素、临床意义及不同托槽体系的转矩设计作一综述。

关键词：转矩托槽设计正畸学 [牙合]

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of mixing lard with soybean oil in cooking on hepatic antioxidative ability and renal metabolic activity

引用

Oil Crop Science 2020年第1期5卷 26-30页

作者： Yingfang Zhou Xin Li Linyu Zhang Haisi xiao Sisi yan Lixin Wen Ji Wang Laboratory of Animal Clinical Toxicology Department of Clinical Veterinary MedicineCollege of Veterinary MedicineHunan Agricultural UniversityChangshaChina Orient Science and Technology College of Hunan Agricultural University ChangshaChina Hunan Collaborative Innovation Center of Animal Production Safety ChangshaChina Changsha Lvye Biotechnology Co. Ltd.ChangshaChina

A simulate daily oriental dietary pattern(a blend of lard and soybean oil)was performed in this research to investigate influence on liver and kidney *** mice were randomly divided into 6 groups with diets of different fat added oils respectively for 12 *** and uric acid contents in mice fed with blended oil were significantly lower than in those fed only with soybean oil and lard due to the improved activities of antioxidant *** use of a blend of lard with soybean oil significantly increased antioxidant capacity,reduced lipid peroxidation of liver and serum uric acid production,thus protected liver and renal *** also suggests that the oriental dietary pattern might reduce the risk of gout.

关键词： Soybean oil Lard Oxidative damage Liver function Kidney function

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Carbon emission reduction effect and mechanism test of carbon emission trading pilot

引用

Ecological Economy 2023年第4期19卷 302-316页

作者： yanG xiao-xuan ZHANG yan-wei School of Business University of JinanJinan 250002CHINA

Carbon emission trading pilot policies were launched in seven provinces and cities,including Beijing,Shanghai,Tianjin and Chongqing in *** emission trading is of great significance to the development of green *** China’s carbon emission trading pilot as a natural experiment,the dual difference method was used to explore the carbon emission reduction effect of the pilot carbon emission trading policy on the pilot areas in China based on the panel data of 30 provinces,autonomous regions and municipalities in China from 2000 to *** score matching,parallel trend test and placebo test were conducted to improve the robustness of the empirical *** is found that carbon emission trading pilot policies significantly promote carbon emission reduction in pilot areas compared with non-pilot *** conclusion from the benchmark regression passed the robustness test,and the carbon reduction effect showed an increasing trend year by *** the mediation effect test,the carbon emission reduction mechanism of the pilot policy was *** results show that the carbon trading pilot policy reduces the carbon dioxide emission in the pilot area by promoting the upgrading of industrial structure and technological progress.

关键词： carbon emission trading carbon emission DID model

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Targeting Therapeutic Windows for Rheumatoid Arthritis Prevention

引用

Chinese Journal of Integrative Medicine 2024年第9期30卷 842-851页

作者： GAO Kai-xin yanG Yi-hong LIANG Qi MEI Li-yan LIANG You-bang WANG mao-jie CHEN Xiu-min HUANG Qing-chun WEN Ze-huai HUANG Run-yue Section of Rheumatology and Immunology Research The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou510120China The Second Clinical Medical College Guangzhou University of Chinese MedicineGuangzhou510405China State Key Laboratory of Dampness Syndrome of Chinese Medicine The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou510120China Guangdong-Hong Kong-Macao Joint Lab on Chinese Medicine and Immune Disease Research Guangzhou University of Chinese MedicineGuangzhou510405China Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome Guangzhou510120China Guangdong Provincial Key Laboratory of Chinese Medicine for Prevention and Treatment of Refractory Chronic Diseases Guangzhou510120China The Key Unit of Methodology of Clinical Research The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou510120China

Rheumatoid arthritis(RA)is a worldwide public health *** to delay or prevent the onset of RA have attracted much attention in recent years,and researchers are now exploring various prevention *** present,there is still no unified consensus for RA prevention,but targeting therapeutic windows and implementing interventions for at-risk individuals are extremely *** to the limited number of clinical trials on pharmacologic interventions,further studies are needed to explore and establish optimal intervention regimens and effective measures to prevent progression to *** this review,we introduce the RA disease process and risk factors,and present research on the use of both Western and Chinese medicine from clinical perspectives regarding RA ***,we describe several complete and ongoing clinical studies on the use of Chinese herbal formulae for the prevention of RA.

关键词： rheumatoid arthritis prevention Chinese medicine review

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multiple Darboux–B?cklund transformations via truncated Painleve′ expansion and Lie point symmetry approach

引用

Chinese Physics B 2018年第6期27卷 103-108页

作者： Shuai-Jun Liu xiao-yan Tang Sen-Yue Lou Shanghai Key Laboratory of Trustworthy Computing East China Normal University Shanghai 200062 China Ningbo Collabrative Innovation Center of Nonlinear Harzard System of Ocean and Atmosphere and Faculty of Science Ningbo University Ningbo 315211 China

For a given truncated Painleve′ expansion of an arbitrary nonlinear Painleve′ integrable system, the residue with respect to the singularity manifold is known as a nonlocal symmetry, called the residual symmetry, which is proved to be localized to Lie point symmetries for suitable prolonged systems. Taking the Korteweg–de Vries equation as an example, the n-th binary Darboux–Ba¨cklund transformation is re-obtained by the Lie point symmetry approach accompanied by the localization of the n-fold residual symmetries.

关键词： residue symmetry multiple Darboux-Baicklund transformation Lie point symmetry approach

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

STUDY OF THE VERTICAL WIND FIELD STRUCTURE AND ITS RELATIONSHIP WITH PM2.5 AIR POLLUTION OVER THE PEARL RIVER DELTA IN AUTUMN

引用

Journal of Tropical Meteorology 2020年第1期26卷 82-92页

作者： WU Meng LUO Yun ZHENG yan-ping WU xiao-xun FAN Shao-jia WU Dui Tornadoes Research Center of Foshan Foshan 528000 China School of Atmospheric Science Sun Yat-sen UniversityGuangzhou 510275 China Institute of Atmospheric Environmental Safety and Pollution Control Jinan UniversityGuangzhou 510632 China Guangdong Meteorological Observation Data Center Guangzhou 510110 China

Meteorological conditions,particularly the vertical wind field structure,have a direct influence on the PM2.5 concentrations over the Pearl River Delta(PRD).In October 2012,an exceptional air pollution event occurred in the PRD,and a high concentration of PM2.5 was registered at some *** days with PM2.5 air pollution,the wind speed was less than 3 m s-1 at the surface,and the vertical wind field featured a weak wind layer(WWL)with a thickness of approximately 1000 *** mean atmospheric boundary layer height was less than 500 m during pollution days,but it was greater than 1400 m during non-pollution days.A strong negative correlation was detected between the PM2.5 concentration and the ventilation index(VI).The VI was less than 2000 m2 s-1 during PM2.5 air pollution *** of the weak wind,sea-land breezes occurred frequently,the recirculation factor(RF)values were small at a height of 800 m during pollution days,and the zones with the lowest RF values always occurred between the heights of 300 and 600 *** RF values during PM2.5 pollution days were approximately 0.4 to 0.6 below a height of 800 m,reducing the transportation capacity of the wind field to only 40%to 60%.The RF and wind profile characteristics indicated that sealand breezes were highly important in the accumulation of PM2.5 air pollution in the *** sea breezes may transport pollutants back inland and may result in the peak PM2.5 concentrations at night.

关键词： atmospheric environment air quality recirculation factor sea-land breezes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：