|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Impact of emission control on regional air quality: An observational study of air pollutants before, during and after the Beijing Olympic Games显示文摘An observational study on trace gases and PM2.5was conducted at three sites in and around Beijing, during the Olympic season from 2007 to 2009. Air quality improved significantly during the Olympic Games due to the special emission control measures. However, concentrations of the primary pollutants and PM were found to have risen significantly after the Games. Although the major O3precursors(NOx and VOCs) were well controlled during the Olympic season, O3was still found to be the highest in 2008, based on the data of ground-based observation. All this information suggests that while control of regional emissions for the Beijing Olympic Games did improved the air quality in Beijing, more eforts will be needed for the continuous improvement of regional air quality, especially for significant reductions of O3and fine particulate pollution, and not only in Beijing, but also in the Beijing-Tianjin-Hebei region. | Shulan Wang Jian Gao Yuechong Zhang Jingqiao Zhang Fahe Cha Tao Wang Chun Ren Wenxing Wang | 2014 | Journal of Environmental Sciences2014,26,1: | 20 |
| 2 | Grain yield and water use of winter wheat as affected by water and sulfur supply in the North China Plain显示文摘Water shortage has threatened sustainable development of agriculture globally as well as in the North China Plain(NCP).Irrigation,as the most effective way to increase food production in dry land,may not be readily available in the situation of drought.One of the alternatives is to supply plants with enough nutrients so that they can be more sustainable to the water stress.The objective of this study was to explore effects of irrigation and sulphur(S)application on water consumption,dry matter accumulation(DMA),and grain yield of winter wheat in NCP.Three irrigation regimes including no irrigation(rainfed,I_0)during the whole growth period,once irrigation only at jointing stage(90 mm,I_1),and twice respective irrigation at jointing and anthesis stages(90 mm plus 90 mm,I_2),and two levels of S application including 0(S_0)and 60 kg ha^(–1)(S_(60))were designed in the field experiment in NCP.Results showed that increasing irrigation times significantly increased mean grain yield of wheat by 12.5–23.7%and nitrogen partial factor productivity(NPFP)by 21.2–45.0%in two wheat seasons,but markedly decreased crop water use efficiency(YWUE).Furthermore,S supply 60 kg ha^(–1) significantly increased mean grain yield,YWUE,IWUE and NPFP by 5.6,6.1,23.2,and 5.6%(across two wheat seasons),respectively.However,we also found that role of soil moisture prior to S application was one of important greater factors on improving the absorption and utilization of storage water and nutrients of soil.Thus,water supply is still the most important factor to restrict the growth of wheat in the present case of NCP,supplying 60 kg ha^(–1) S with once irrigation 90 mm at the jointing stage is a relatively appropriate recommended combination to improve grain yield and WUE of wheat when saving water resources is be considered in irrigated wheat farmlands of NCP. | XIE Ying-xin ZHANG Hui ZHU Yun-ji ZHAO Li YANG Jia-heng CHA Fei-na LIU Cao WANG Chen-yang GUO Tian-cai | 2017 | Journal of Integrative Agriculture2017,16,3: | 6 |
| 3 | Effect of ablation of complex fractionated atrial electrogram on vagal modulation in dogs显示文摘背景临床的观察证明了复杂 fractionated atrial 电记录图(CFAE ) 在心脏的自治神经系统与 ganglionated 丛活动联系。这研究试图在 vagal 调整上调查 CFAE 脱离的影响到正厅和危险开发 atrial 纤维性颤动(AF ).Methods 十条成年杂种狗被包含。颈的 sympathovagal 箱子被分散,同情的效果被堵住。CFAE 是在 atrial 3-dimensional 图象上标注并且加 sympathovagal 箱子刺激在 S1S2 导致的 AF 期间切除了规划刺激的颜色。Atrial 有效倔强的时期(ERP ) 和 AF 的危险窗户(VW ) 在 4 个中庭地点在基线上并且在 vagal 刺激被测量。连续织物节从夺格并且控制标本收到了 hematoxylin 并且曙红染色因为显微镜的 examination.Results 大多数 CFAE 区域在正确上级是局部性的肺的象限,远侧的冠的湾穴(CSd ) 象限,和近似冠的湾穴(CSp ) 象限(21.74% ,独立) 。弄短的湾穴节奏周期长度(SCL ) 没在这些地点在脱离以后显著地减少,包括正确 atrial 附器,左 atrial 附器, CSd,和 CSp (P 0.05 ) 。显著地在 vagal 刺激期间弄短的 ERP 在脱离(P 0.01 ) 以后减少了;到 vagal 刺激的 VW 显著地在脱离(P 0.05 ) 以后减少了。在 ablation.Conclusions CFAE 以后改变的单个 ganglia 的建筑学在狗有一个自治基础。在 CFAE 脱离以后弄短到 vagal 刺激的减少的 SCL 和 ERP 证明那 CFAE 脱离稀释 vagal 调整到正厅,从而压制 AF 由提高的 vagal 调停了活动。CFAE 脱离能压制 AF 由提高的 vagal 调停了活动。 | ZHANG Shu-long DONG Ying-xue JIANG Peng GAO Lian-jun CHA Yong-mei Douglas L. Packer XIA Yun-long YIN Xiao-meng CHANG Dong YANG Yan-zong | 2010 | Chinese Medical Journal2010,,22: | 5 |
| 4 | Using Airgun Source Signals to Study Regional Wave Velocity Changes before and after the Yunlong M_S5.0 and Yangbi M_S5.1 Earthquakes显示文摘On the basis of the airgun source signals recorded by the stations from January,2016 to June,2017,we use cross-correlation detection technology to obtain the characteristics of the stable phase travel time change of each station.We used the Yunlong MS5.0 and Yangbi MS5.1 earthquakes as samples.According to regional characteristics,13 stations with high signal-to-noise ratios and complete data were selected(including 3 fixed stations and 10 active source stations).They are divided into four regions,and on the basis of the GNSS baseline data,the characteristics of regional wave velocity changes before and after the earthquake are analyzed.The results show that the station phase travel time change and the regional stress characteristics represented by the GNSS baseline data have good correlation in the short-term.Due to different degrees of regional stress,there are differences in the travel time changes of different stations in the four regions.Before the Yunlong MS5.0 and Yangbi MS5.1 earthquakes,with regional stress adjustment,there is an upward trend in the travel time changes of related stations in the adjacent areas of up to 0.02 s.The difference is that there are differences in the time nodes and duration of the travel time anomalies,and there is a reverse descent process after the Yangbi MS5.1 earthquake.There are different degrees of travel time fluctuations in the relevant stations before and after the two earthquakes,but the fluctuation range before and after the earthquake was small.Compared with the water level change of the reservoir,the adjustment of the regional stress is more likely to have a substantial impact on the travel time changes of the relevant stations. | YANG Jianwen LI Lei ZHANG Pengying YE Beng HE Yingwen CHEN Jia CHA Wenjian | 2019 | Earthquake Research in China2019,33,2: | 4 |
| 5 | Comparative Literature:Issues and Prospect——An Interview with Professor Svend Erik Larsen显示文摘本文是对奥尔胡斯大学比较文学教授斯文德·埃里克·拉森就比较文学的若干问题所作的专题访谈。拉森教授在此访谈中大致回顾了比较文学学科发展的历史演变情况,指出了当今比较文学研究中存在的相关问题。他在肯定中国学者出版的比较文学理论专著《比较文学变异学理论》的学术价值的同时,反思了比较文学中国学派的建立问题,提出了比较文学研究者应该具备的基本素养并表达了对中国比较文学研究者,特别是中国年轻一代比较文学研究者的深切期望。 | Cha ZHANG Svend Erik LARSEN | 2016 | Comparative Literature:East & West2016,,1: | 2 |
| 6 | Chitosan and β-cyclodextrin Microspheres as Pulmonary Sustained Delivery Systems显示文摘Chitosan andβ-cyclodextrin were used to prepare microspheres with theophylline for pulmonary delivery by spray drying method.The characteristics,mucociliotoxicity,permeation rate and drug release were studied.The drug entrapments of microspheresⅠ,ⅡandⅢ were from 35.70%to 21.09% and 13.33%,while yields and encapsulation efficiencies were higher than 45% and about 90% respectively. The microspheres possessed low tap densities(0.34-0.48 g/cm3),appropriate diameters(3.35-3.94μm)and theoretical aerodynamics diameters(2.20-3.04μm).SEM images showed the microspheres were spherical with smooth or wrinkled surface surfaces.FT-IR demonstrated theophylline had formed hydrogen bonds with chitosan and β-cyclodextrin.The microspheres could effectively reduce the ciliotoxicity and easy to penetrate the memberine.The in vitro release of the microspheres was related to the ratio of drug/polymer and microspheresⅡ had a prolong release,providing the release of 72.00%in 12 h.The results suggestes that chitosan/β-cyclodextrin microspheresⅡare a promising carrier as sustained release for pulmonary delivery. | ZHANG Weifen CHEN Xiguang LI Piwu HE Qiangzhi ZHOU Huiyun CHA Dongsu | 2008 | Journal of Wuhan University of Technology(Materials Science)2008,23,4: | 2 |
| 7 | Comparison of Micromorphological Features of Two Agricultural Cultivated Soils in Guanzhong Areas, Shaanxi Province, China显示文摘By comparing micromorphological features of irrigated and non-irrigated soils in Guanzhong areas, China, this paper tries to illustrate the influences of farming management methods on the soil-forming process. The micromorphology was observed under a petrographic microscope and its image was quantificationally measured by Nikon NISBR 2.2 software. Both irrigated and non-irrigated soils have the same soil profile pattern, Ap1-Ap2-BC, but the former has a more obvious profile dissimilation. The minerals assemblage of soil profiles A and B are very similar, which is mainly composed of Q and Pl. Compared with non-irrigated soil, grains of irrigated soil remarkably decrease in length, area, eqdiameter, perimeter, elongation, roundness, and C/F10 μm ratio; voids are characterized by more regular void shape and more smooth void wall; there is more abundant residual clay and small amount of illuvial clay. All results in this study suggest that the farming management method has influences on soil profile dissimilation and micromorphology. Agricultural irrigation could strengthen the degree of weathering, make smaller and rounder soil grains, cause a significant increase of residual clay and appearance of illuvial clay. But no significant change has been observed in the minerals assemblage of coarse grains. | PANG Jiang-li QIU Hai-yan HUANG Chun-chang CHA Xiao-cun ZHANG Xu | 2007 | Agricultural Sciences in China2007,6,9: | 2 |
| 8 | Electrochemical Sensors Applied for In vitro Diagnosis显示文摘Electrochemical sensing technology has received extensive attention from researchers for its unique detection and analysis methods as well as the promising applications in clinical diagnosis.Compared with other detection methods,such as capillary electrophoresis,high‐performance liquid chromatography and liquid chromatography-tandem mass spectrometry,the electrochemical sensor overcomes the disadvantages of expensive cost and complicated operation,as an ideal device for in vitro detection.In this article,we mainly introduce some methods for the detection of biologically important compounds and cancer biomarkers,and briefly summarize the characteristics of these methods at first.And then,we also focus on the latest research progress in the application of electrochemical sensing technology to biologically important compounds’and cancer biomarkers’detection.Finally,the development trend and challenges of electrochemical sensing technology for in vitro diagnosis are also prospected. | LI Duo WU Cha TANG Xuehui ZHANG Yue WANG Tie | 2021 | Chemical Research in Chinese Universities2021,37,4: | 2 |
| 9 | Deep eutectic solvent-based polymer electrolyte for solid-state lithium metal batteries显示文摘Poly(ethylene) oxide(PEO)-based electrolytes have been widely studied for solid-state lithium batteries while their ionic conductivity and lithium-ion transference number still need to be further improved.Herein, using the combined experimental and theoretical approach, we demonstrate a novel, solidstate PEO-deep eutectic solvent(DES) electrolyte for the first time. We found that the in situ formation of DES can reduce the crystallinity of PEO matrix and more Li+ions can move freely owing to the weakened coordination between ether oxygens and Li-ions. Besides, we show that more Li+ions can be dissociated from Li salts in PEO-DES electrolyte using the molecular dynamics simulations. Such liquid-free PEO-DES electrolytes showed good ionic conductivity(2.1 × 10^(-4) S cm^(-1)) which is 160% higher than that of conventional PEO-Li TFSI(8.1 × 10^(-5) S cm^(-1)) electrolyte at 60 ℃. Additionally, the PEO-DES electrolyte showed 136% increase of Li-ion transference number(0.33) compared with ionic liquid-doped PEO-Li TFSI(0.14) at 60 ℃. Moreover, the PEO-DES exhibited good compatibility with Li metal and stable Li plating/stripping behavior with little morphology change of Li metal. This research also provides new insights into the enhancement mechanisms of novel polymer electrolytes, improving our fundamental understanding of critical challenges that have impeded the adoption of solid-state lithium metal batteries. | Panpan Dong Xiahui Zhang Kee Sung Han Younghwan Cha Min-Kyu Song | 2022 | Journal of Energy Chemistry2022,31,7: | 2 |
| 10 | Comparative outcomes of subcutaneous and transvenous cardioverter-defibrillators显示文摘Background: The comparative outcomes of subcutaneous implantable cardioverter-defibrillator (S-ICD) and transvenous (T-ICD) have not been well studied. The aim of this study was to evaluate the safety and efficacy of currently available S-ICD and T-ICD. Methods: The study included 86 patients who received an S-ICD and 1:1 matched to those who received single-chamber T-ICD by gender, age, diagnosis, left ventricular ejection fraction (LVEF), and implant year. The clinical outcomes and implant complications were compared between the two groups. Results: The mean age of the 172 patients was 45 years, and 129 (75%) were male. The most common cardiac condition was hypertrophic cardiomyopathy (HCM, 37.8%). The mean LVEF was 50%. At a mean follow-up of 23 months, the appropriate and inappropriate ICD therapy rate were 1.2% vs. 4.7%(X^2= 1.854, P=0.368) and 9.3% vs. 3.5%(X^2 = 2.428, P = 0.211) in S-ICD and T-ICD groups respectively. There were no significant differences in device-related major and minor complications between the two groups (7.0% vs. 3.5%, X^2 = 1.055, P = 0.496). The S-ICD group had higher T-wave oversensing than T-ICD group (9.3% vs. 0%, X^2 = 8.390, P=0.007). Sixty-five patients had HCM (32 in S-ICD and 33 in T-ICD). The incidence of major complications was not significantly different between the two groups. Conclusions: The efficacy of an S-ICD is comparable to that of T-ICD, especially in a dominantly HCM patient population. The S-ICD is assodated with fewer major complications demanding reoperation. | Jin-Jun Liang Hideo Okamura Roshini Asirvatham Andrew Schneider David O. Hodge Mei Yang Xu-Ping Li Ming-Yan Dai Ying Tian Pei Zhang Bryan C. Cannon Cong-Xin Huang Paul A. Friedman Yong-Mei Cha | 2019 | Chinese Medical Journal2019,,6: | 2 |
| 11 | Multiple instance boos- ting for object detection显示文摘 | Viola P Platt J Zhang Cha | 2007 | Neural Information Pro- cessing Systems2007,18,1: | 1 |
| 12 | A self cleaning underwater superoleophobic mesh for oil water separa- tion显示文摘 | Zhang Lianbin Zhong Yujiang Cha Dongkyu | 2013 | Sci Rep2013,3,7: | 1 |
| 13 | Dissociation betweenionic remodeling and ability to sustain atrial fibrillationduring recovery from experimental congestive heartfailure显示文摘 | Cha TJ Ehrlich JR Zhang L | 2004 | Circulation2004,109,3: | 1 |
| 14 | The primary film on the surface of a carbon electrode in LiAlCl4-SOCl2 electrolyte显示文摘 | Zhang Y L Cha C S | 1992 | Electrochimica Acta1992,37,7: | 1 |
| 15 | Amphiphilic surface modification of hollow carbon nanofibers for improved cycle life of lithium sulfur batteries 显示文摘 | Zheng G Y Zhang Q F Cha J J | 2013 | Nano Lett2013,13,3: | 1 |
| 16 | A urinary proteomic landscape of COVID-19 progression identifies signaling pathways and therapeutic options显示文摘Signaling pathway alterations in COVID-19 of living humans as well as therapeutic targets of the host proteins are not clear.We analyzed 317 urine proteomes,including 86 COVID-19,55 pneumonia and 176 healthy controls,and identified specific RNA virus detector protein DDX58/RIG-I only in COVID-19 samples.Comparison of the COVID-19 urinary proteomes with controls revealed major pathway alterations in immunity,metabolism and protein localization.Biomarkers that may stratify severe symptoms from moderate ones suggested that macrophage induced inflammation and thrombolysis may play a critical role in worsening the disease.Hyper activation of the TCA cycle is evident and a macrophage enriched enzyme CLYBL is up regulated in COVID-19 patients.As CLYBL converts the immune modulatory TCA cycle metabolite itaconate through the citramalyl-CoA intermediate to acetyl-CoA,an increase in CLYBL may lead to the depletion of itaconate,limiting its anti-inflammatory function.These observations suggest that supplementation of itaconate and inhibition of CLYBL are possible therapeutic options for treating COVID-19,opening an avenue of modulating host defense as a means of combating SARS-CoV-2 viruses. | Yuntao Liu Lan Song Nairen Zheng Jinwen Shi Hongxing Wu Xing Yang Nianci Xue Xing Chen Yimin Li Changqing Sun Cha Chen Lijuan Tang Xiaotian Ni Yi Wang Yaling Shi Jianwen Guo Guangshun Wang Zhongde Zhang Jun Qin | 2022 | Science China(Life Sciences)2022,65,9: | 1 |
| 17 | Atrial ionic remodeling induced by atrial tachycardia in the presence of congestive heart failure 显示文摘 | Cha TJ Ehrlieh JR Zhang L | 2004 | Circulation2004,110,12: | 1 |
| 18 | Dissociation between ioic remodeling and ability to sustain atrial fibrillation during recovery from experimental congestive heart failure显示文摘 | Cha TJ ehrilich JR Zhang L | 2004 | Circulation2004,109,: | 1 |
| 19 | Maximum likelihood soundsource localization and beamforming for directional microphone arraysin distributed meetings显示文摘 | Zhang Cha Florenciol D Ba D E | 2008 | IEEE Transactions on Multimedia2008,10,3: | 1 |
| 20 | Cellular electrophysiology of canine pulmonary vein cardiomyocytes:action potential and ionic current properties显示文摘 | Ehrlich JR Cha TJ Zhang L | | 0,,: | 1 |