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Performances of six reanalysis profile products in the atmospheric correction of passive microwave data for estimating land surface temperature under cloudy-sky conditions

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International Journal of Digital Earth 2022年第1期15卷 296-322页

作者： Xin-Ming Zhu Xiao-Ning Song Pei Leng fang-cheng zhou Liang Gao Da Guo College of Resources and Environment University of Chinese Academy of SciencesBeijingPeople’s Republic of China Yanshan Earth Critical Zone and Surface Fluxes Research Station University of Chinese Academy of SciencesBeijingPeople’s Republic of China Key Laboratory of Agricultural Remote Sensing Ministry of Agriculture//Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijingPeople’s Republic of China National Satellite Meteorological Centre China Meteorological AdministrationBeijingPeople’s Republic of China

Passive microwave(PMW)observations from the Advanced Microwave Scanning Radiometer 2 provide a way to obtain cloudy land surface temperatures(LSTs).However,atmospheric corrections must be performed on cloudy LSTs due to the cloud effect at higher *** this paper,six reanalyzed profiles,including the fifth-generation European Centre for Medium-range Weather Forecasts Reanalysis(ERA5),Interim Reanalysis(ERA-Interim),Japanese 55-year Reanalysis Data(JRA-55),Modern-Era Retrospective analysis for Research and Application V2(MERRA2),National Centers for Environmental Prediction(NCEP)/Final Operational Global Analysis(FNL),and NCEP/Global Forecasting System(GFS),were compared with 2829 radiosonde profiles derived from the University of ***,their performances in correcting the atmospheric effects of LSTs at cloudy skies were *** showed that the ERA5 had the best accuracy in revealing the actual atmospheric conditions,and the RMSEs of transmittance,downward radiance,and upward radiance were about 0.007,2.01,and 1.89 K,*** RMSEs between the estimated LSTs and referenced LSTs varied from 3.15 K of the ERA5 to 6.12 K of the NCEP/FNL,indicating the ERA5 can be recommended for the atmospheric correction of PMW-based LST ***,transmittance accuracy plays an essential role in impacting the LST retrievals in any weather.

关键词： Reanalysis product land surface temperature atmospheric correction AMSR2 evaluation

Electrochemical Studies of Glutathione Monolayer Assembled on A Polycrystalline Gold Electrode

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Wuhan University Journal of Natural Sciences 2002年第1期7卷 102-106页

作者： fang cheng, zhou Xing-yao  College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, China College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei China

The glutathione (GSH) monolayer and complex monolayer of GSH-metallic ion on polycrystalline gold electrode were studied by using K3Fe(CN)6 as the redox probe. As for the GSH monolayer, it was found that the metallic ions could open the ion-gate in the monolayer dramatically in the order La3+> Pb2+>>Ba2+>Ca2+ whereas Zn2+ ion closed the ion-gate. The complexes of GSH-metallic ions were capable of self-assembling the different kind of monolayer. All the differences were related to the structural configuration of the anchored GSH molecule, which changed with different metallic ions or pH.

关键词： glutatione monolayer complex voltammetry and ac impedance

Lactadherin and procoagulant activities of red blood cells in cyclosporine induced thrombosis

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Chinese Medical Journal 2009年第14期122卷 1674-1680页

作者： ZHENG Yi-ning YU Hong-juan HOU Jin-xiao LU cheng-fang zhou Jin Department of Haematology First Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China

Background The side effects of cyclosporine therapy include thromboembolic complications. However, the mechanisms underlying the hypercoagulable state induced by cyclosporine are not fully understood. Cyclosporine binds to red blood cells （RBCs） with a high affinity in circulation and alters the membranes of RBCs. Therefore, we propose that such alterations in RBCs membranes play a role in cyclosporine-induced coagulopathy and this disorder may be rectified by lactadherin, a phosphatidylserine binding protein. Methods RBCs from healthy adults were treated with various concentrations of cyclosporine. Procoagulant activity of the RBC membrane was measured by the single stage recalcification time and confirmed by detection of tenase and thrombin assembly through enzymatic assays. Inhibition assays of coagulation were carried out in the presence of lactadherin, annexin V or antitissue factor. Phosphatidylserine exposure was detected by flow cytometry and confocal microscopy through binding with fluorescein isothiocyanate （FITC）-Iabeled lactadherin as well as FITC annexin V. Results RBCs treated with cyclosporine demonstrated increased procoagulant activity. Cyclosporine treatment markedly shortened the clotting time of RBCs （（305±10） seconds vs （366±15） seconds） and increased the generation of intrinsic factor Xase （（7.68±0.99） nmol/L vs （2.86±0.11） nmol/L） and thrombin （（15.83±1.37） nmol/L vs （4.88±0.13） nmol/L）. Flow cytometry and confocal microscopy indicated that cyclosporine treatment induced an increased expression of phosphatidylserine on the RBC membrane. Lactadherin was more sensitive in detecting phosphatidylserine exposure of the RBC membrane than annexin V. The modulating effect of procoagulant activity was concomitant with and dependent on phosphatidylserine exposure. Blocking of phosphatidylserine with lactadherin effectively inhibited over 90% of FXa generation and prothrombinase activity and prolonged coagulation time. Conclusions Procoagulant properties

关键词： cyclosporine red blood cell procoagulant activity lactadherin

BDNF-TrkB pathway mediates the protection of hydrogen sulfide against formaldehyde-induced neurotoxicity

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BDNF-TrkB pathway mediates the protection of hydrogen sulfid...

CRT?D reverses heart size and function in patient with left ventricular noncompaction:A case report

中国神经科学学会第十届全国学术会议

作者： cheng-fang zhou Xiao-Qing Tang Institute of Cognition and Nervous Systems Disease Medical CollegeUniversity of South China

Objective Formaldehyde(FA) can induce *** have previously found that Hydrogen sulfide(H2S) protects against the neurotoxicity of ***,the underlying mechanism is *** derived neurophic factor(BDNF) is an important endogenous ***,we guessed that H2S can antagonize the formaldehyde-generated neurotoxicity by modulating *** present work used FA-treated PC12cell as the cell model of FA neurotoxicity to explore whether BDNF-TrkB pathway mediates the H2S-caused protection against FA-induced *** The cell viability was detected by Cell Counting Kit-8;The cell apoptosis was measured by flow cytometry(FCM) after PI staimng;The level of intracellular ROS was measured by NBT reduction assay;The intracellular level of MDA,and 4-HNE and the activity of Caspase-3 were determined by Elisa assay;The expressions of BDNF,Bcl-2,and Bax were detected by Western ***(1) HS upregulates the expression of BDNF in PC12 *** PC12 cells were treated with HS(100,200,or 400μiMol/L) for 24 h,the expression of BDNF was increased in a concentration-dependent *** pretreated with 200 μM of HS for 30min,PC12 cells were exposed to FA(120μM) for 24 *** attenuated the inhibitory effects of FA on BDNF *** data indicate that the protective role of HS in FA-induced neurotoxicity is involved in upregulation of BDNF.(2) Blocking the BDNF-TrkB pathway by K252a reverses the protective effect of HS on FA-induced neurotoxicity in PC12 *** pretreated with 200 μM of HS for 30 min,PC12 cells were exposed to FA(120 μM)for 24 h,and K252a was added into the culture medium 30 min before HS application.K252a,the blocker of BDNF-TrkB pathway,reversed the protection of HS against FA-induced cytotoxicity,apoptosis,accumulation of cellular reactive aldehydes(4-HNE and MDA) and reactive oxygen species(ROS),activation of Caspase-3,downregulation of Bcl-2 expression and upregulation of Bax expression,which suggest

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South China Journal of Cardiology 2020年第1期21卷 67-70页

作者： JIANG Wen-long XIONG Xiao-shuan CHEN Juan WU Jia cheng fang-zhou Department of Cardiovascular Shenzhen Yantian People's HospitalShenzhen 518081China

Left ventricular noncompaction cardiomyop?athy(LVNC)is a rare form of cardiomyopa?thy characterized by deep intertrabecular re?cesses and abnormal trabeculations that can be showed by transthoracic echocardiogram(TTE)or cardiac MRI(CMR).Our case de?scribed a 44?year?old male who presented with unclear speech,left limb weakness and was discovered to have significantly reduced left ventricular ejection fraction(LVEF)which was nonischemic in etiology as confirmed by cardiac catheterization.

关键词： ventricular cardiac LVEF

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao zhou Xiongbin Luo Hang Li Shan Guo Zhuang Tong Xiaotao zhou Xu Li Zhaohui Hou Shuquan Liang Guozhao fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

Analysis of Double-T Filter Used for PWM Circuit to D/A Converter

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Analysis of Double-T Filter Used for PWM Circuit to D/A Conv...

负载型P-Mo-V/SBA-15催化剂上的甲烷选择氧化反应

第24届中国控制与决策会议

作者： WANG Yan-wei, cheng fang, zhou Yu-cheng, XU Jia-he Institute of Wood Industry, Chinese Academy of Forestry Beijing 100091

In practice applications, high-precision analog output is often required for complex process control, so the PWM （Pulse Width Modulation） output should be converted to smooth direct current output. A simple, practical and high-precision conversion and analysis method is presented in this paper. After transforming the PWM waveform with Fourier Transform Method, the digital-analog converter signal, which is demodulated through PWM, can be modulated with the low-pass filter. Thus the conversion from PWM to DAC （Digital to Analog Converter） can be realized. For the typical double-T filter circuit, based on the concept of closed-loop dominant pole in classical control theory, the order of the transfer function expression is reduced. The mathematical analysis to direct current component of PWM signal obtained through Double-T filter circuit is verified by simulation. Finally, the conversion rapidity and accuracy of this method for DAC is discussed.

关键词： PWM signal Double-T filter Digital to Analog converter Simulation analysis

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化学学报 2008年第8期66卷 902-908页

作者：裴素朋岳斌程记芳周琰贺鹤勇复旦大学化学系上海市分子催化和功能材料重点实验室上海200433

以磷钼钒杂多酸(H5PMo10V2O40)为前驱体、介孔SBA-15为载体,采用浸渍法制备不同负载量的P-Mo-V氧化物催化剂.在甲烷选择氧化反应中,考察了负载量、反应温度、空速等对甲烷转化率和产物选择性的影响.结果表明,催化剂对甲烷选择氧化制甲... 详细信息

以磷钼钒杂多酸(H5PMo10V2O40)为前驱体、介孔SBA-15为载体,采用浸渍法制备不同负载量的P-Mo-V氧化物催化剂.在甲烷选择氧化反应中,考察了负载量、反应温度、空速等对甲烷转化率和产物选择性的影响.结果表明,催化剂对甲烷选择氧化制甲醛具有较高活性,甲烷转化率随负载量的增大和反应温度的升高而提高,甲醛的选择性随负载量的增大先升后降.反应温度为640℃、空速为48300L·kg-1·h-1、氧化物负载量w=2.89%时,甲醛的时空产率最高(295g·kgcat-1·h-1).多种表征表明,氧化物负载量w≤2.89%时,P-Mo-V氧化物在载体介孔孔道内以高分散形式存在.催化剂的酸性和氧化还原性质与负载量相关,NH3-TPD和H2-TPR的测试结果表明,较弱的酸性位和较低还原温度的活性组分有利于甲烷选择氧化制甲醛.

关键词：磷钼钒杂多酸(H5PMo10V2O40) SBA-15 甲烷选择氧化甲醛

粘着斑激酶磷酸化与大鼠血管内膜剥脱术后血管新生内膜中细胞增生程度的相关性(英文)

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中国组织工程研究与临床康复 2007年第49期11卷 10014-10016页

作者：鲍翠玉程芳洲柯俊咸宁学院心血管病研究所湖北省咸宁市437100 深圳市慢性病防治院广东省深圳市518020 华中科技大学同济医学院附属同济医院心内科湖北省武汉市430030

背景: 粘着斑激酶磷酸化参与细胞增殖、迁移与凋亡的调节过程。在血管再狭窄发生过程中, 粘着斑激酶是否参与、介导了血管平滑肌细胞的迁移与增殖目前尚未见报道。目的: 分析粘着斑激酶磷酸化与大鼠血管内膜剥脱术后血管重塑的关系。设... 详细信息

背景: 粘着斑激酶磷酸化参与细胞增殖、迁移与凋亡的调节过程。在血管再狭窄发生过程中, 粘着斑激酶是否参与、介导了血管平滑肌细胞的迁移与增殖目前尚未见报道。目的: 分析粘着斑激酶磷酸化与大鼠血管内膜剥脱术后血管重塑的关系。设计: 随机对照动物实验。单位: 咸宁学院心血管病研究所、深圳市慢性病防治院和华中科技大学同济医学院附属同济医院心内科。材料: 实验于 2005- 03/05 在武汉同济医院心血管实验室完成。选用雄性 Wistar 大鼠 40 只, 动物实验符合动物伦理学要求。方法: ①将 40 只大鼠按随机数字表法分为 5 组(n =8), 即非内皮剥脱对照组、内皮剥脱术后 4 d、8 d、16 d 和 24 d 组。②后 4 组建立大鼠主动脉内皮剥脱术后再狭窄模型, 分别于术后 4, 8, 16 和 24 d 取内膜剥脱部位血管段进行形态学观察, 以出现形态学变化作为模型成功的依据; 应用 Western blolt 方法检测粘着斑激酶总含量及磷酸化粘着斑激酶含量。以结扎左颈总动脉的大鼠胸腹主动脉作为对照。主要观察指标: 各组大鼠主动脉粘着斑激酶及磷酸化粘着斑激酶表达水平。结果: 40 只大鼠全部进入结果分析。①非内皮剥脱对照组大鼠主动脉血管可检测到少量粘着斑激酶, 主要是以非磷酸化形式存在; 内皮剥脱术后 4 d 组粘着斑激酶和磷酸化粘着斑激酶含量均显著高于非内皮剥脱对照组(P < 0.05) 。随着损伤时间的延长, 粘着斑激酶和磷酸化粘着斑激酶含量显示相同的变化趋势。但粘着斑激酶在术后第 8 天达到峰值,一直持续到术后第 16 天, 此后开始下降; 磷酸化粘着斑激酶峰值出现在术后 16 d, 在峰值水平上持续时间较短。②形态学观察显示, 术后 8 d 可见新生内膜中局灶性细胞增殖, 术后 16～24 d 内膜呈弥漫性增厚。结论: 粘着斑激酶参与大鼠血管内膜剥脱术后血管重塑, 血管新生内膜中细胞增生程度与磷酸化粘着斑激酶及粘着斑激酶总含量的变化密切相关。

关键词：血管成形术内皮,血管蛋白激酶类增生医用植入体