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Acta Oceanologica Sinica 2008年第3期27卷 161-171页

作者： yan yan ZHAO Xinyi zhou Liping College of Urban and Environmental Sciences Laboratory for Earth Surface Processes of Ministry of Education Peking University Beijing 100871 China

Aim to linking the variability of drought in northwest China to the oceanic influence of North Atlantic SSTs at the background of global warming and at the regional climate change shifting stages, year aridity index variations in northwest China and summer North Atlantic sea surface temperature （SST） variations are examined for the 44 a period of 1961-2004 using singular value decomposition （SVD） analysis. Results show that the SST anomalies （SSTA）in the North Atlantic in summer reflected three basic models. The first SVD mode of SST pattern shows a dipole - like variation with the positive center located at southwest and negative center at northeast of extratropical North Atlantic. And it strongly relates to the positive trend in AI variation in northwest China. The second coupled modes display the coherent positive anomalies in extratropical North Atlantic SST and the marked opposite trend of AI variability between north and south of Xinjiang. In addition, the lag correlation analysis of the first mode of SSTA and geopotential heights at 500 hPa variations also shows that the indication of the former influencing the latter configuration, which result in higher air temperature and less precipitation when the SSTA in the North Atlantic Ocean in summer motivated Eurasian circulation of EA pattern, further to influence the wet - dry variations in northwest China by the ocean-to - atmosphere forcing.

关键词： aridity index SSTA teleconnection patterns SVD

QCM and EC-SPR Studies of Cytochrome c Self-assembled on Au Electrode and Enhancement of SPR Signal by Au Nanoparticles

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Chemical Research in Chinese Universities 2012年第6期28卷 1061-1065页

作者： WANG yan-yan JIANG yan-xla zhou You-chen LI yan-yan MA Zhi-fang SUN Shi-gang State Key Laboratory of Physical Chemistry of Solid Surfaces Department of ChemistryCollege of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China

Quartz crystal microbalance（QCM） and cyclic voltammetry（CV） were used to characterize the monolayer of cytochrome c（Cyt c）,which was adsorbed on gold film modified with alkanethiol mixed monolayer.A direct comparison of protein surface coverages calculated from QCM and cyclic voltammetric measurements illustrates that the ratio of the electroactive Cyt c to the total surface-confined Cyt c is 34%,which suggests that the orientation is a main factor affecting the electroactivity of Cyt ***,surface plasmon resonance（SPR） measurement combined with CV ＂in situ＂ was used to investigate the conformational change of Cyt c in the redox ***,Au nanoparticles（Au NPs） were adsorbed on the surface of Cyt *** result indicates that Au NPs promote electron transfer between Cyt c and the gold electrode,and SPR result suggests Au NPs enhance SPR signal.

关键词： Cytochrome c Gold film Self-assembly Electrochemical-surface plasmon resonance(EC-SPR)

Recent Advances of CuAAC Click Reaction in Building Cyclic Polymer

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Chinese Journal of Polymer Science 2017年第3期35卷 317-341页

作者： zhi-hao huang yan-yan zhou zi-mu wang ying li wei zhang nian-chen zhou 张正彪朱秀林 State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China

Cyclic polymers have attracted more and more attentions in recent years because of their unique topological structures and characteristic properties in both solution and bulk state. There are relatively few reports on cyclic polymers, partly because of the more demanding synthetic procedures. In recent years, 'click' reaction, especially Cu(I)-catalyzed azide-alkyne cycloaddition(CuAAC), has been widely utilized in the synthesis of cyclic polymer materials because of its high efficiency and low susceptibility to side reactions. In this review, we will focus on three aspects:(1) Constructions of monocyclic polymer using CuAAC 'click' chemistry;(2) Formation of complex cyclic polymer topologies through CuAAC reactions;(3) Using CuAAC 'click' reaction in the precise synthesis of molecularly defined macrocycles. We believe that the CuAAC click reaction is playing an important role in the design and synthesis of functional cyclic polymers.

关键词： Cu(I)-catalyzed azide-alkyne cycloaddition(CuAAC) 'Click' chemistry Cyclic polymer Reversible deactivation radical polymerization(RDRP) Atom transfer radical polymerization(ATRP) Reversible addition fragmentation chain transfer polymerization(RAFT)

Cytosolic calcium oscillations in submandibular gland cells

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Acta Pharmacologica Sinica 2006年第7期27卷 843-847页

作者： Li SU Chun-yan MA yan-dong zhou yan-hong JIA Zong-jie CUI~2 Institute of Cell Biology,Beijing Normal University,Beijing 100875,China Institute of Cell Biology Beijing Normal University Beijing China

Calcium oscillations can,by default,encode diverse and specific signals by differ-ent modes of *** modulation is illustrated by the activation ofcalcium/calmodulin-dependent protein kinase Ⅱ at unit Hz,and of calcineurin at 10mHz frequencies,*** submandibular gland secretory axis is charac-terized by both potassium and osmolarity gradients from the luminal side of thesecretory *** gradients may play significant physiological roles throughthe feedback modulation of cholinergic *** potassium transformsplateau calcium increases induced by cholinergic stimulation of the submandibu-lar acinar cells into oscillatory calcium *** ductal cells may have simi-lar mechanisms of feedback modulation both by high potassium and by *** feedback mechanisms could modulate the decision-making pro-cess for determining which secretory products are selectively released after nervestimulation.

关键词： submandibular gland secretory axis calcium oscillation

Advances of Electrochemical and Electrochemiluminescent Sensors Based on Covalent Organic Frameworks

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Nano-Micro Letters 2024年第2期16卷 395-422页

作者： Yue Cao Ru Wu yan‑yan Gao yang zhou Jun‑Jie Zhu Key Laboratory for Organic Electronics and Information Displays(KLOEID)and Institute of Advanced Materials(IAM) Nanjing University of Posts and Telecommunications(NJUPT)Nanjing 210023People’s Republic of China State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023People’s Republic of China

Covalent organic frameworks(COFs),a rapidly developing category of crystalline conjugated organic polymers,possess highly ordered structures,large specific surface areas,stable chemical properties,and tunable pore *** the first report of boroxine/boronate ester-linked COFs in 2005,COFs have rapidly gained popularity,showing important application prospects in various fields,such as sensing,catalysis,separation,and energy *** them,COFs-based electrochemical(EC)sensors with upgraded analytical performance are arousing extensive *** this review,therefore,we summarize the basic properties and the general synthesis methods of COFs used in the field of electroanalytical chemistry,with special emphasis on their usages in the fabrication of chemical sensors,ions sensors,immunosensors,and ***,the emerged COFs in the electrochemiluminescence(ECL)realm are thoroughly covered along with their preliminary ***,final conclusions on state-of-the-art COFs are provided in terms of EC and ECL sensors,as well as challenges and prospects for extending and improving the research and applications of COFs in electroanalytical chemistry.

关键词： Covalent organic frameworks Electrochemistry Electrochemiluminescence Sensors

Anaphylaxis effect and substance basis of honeysuckle extract

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Chinese Herbal Medicines 2021年第3期13卷 403-409页

作者： Yu-fei Feng Guo-zhao Qin Zhong-xu Jing yan-hong Wang yan-yan zhou Heilongjiang University of Chinese Medicine Harbin 150040China Heilongjiang Province Traditional Chinese Medicine Administration Harbin 150040China

Objective:To explore the anaphylaxis effect and anaphylaxis substances of ***:Rat peritoneal mast cells(PMC)were separated and purified,the cells were incubated with compound 48/80(0.02 g/L),physiological saline and honeysuckle extract(120 g/L)at 37°C for 0,15,30,45 and 60 *** were observed by optical microscope and transmission electron *** V positive cell rate was detected by flow cytometry to reflect the degranulation rate of *** rats were supplied with honeysuckle extract by intravenous injection at a dose of 2.25 g/*** administration,different parameters were analyzed,including the symptoms,histamine(HIS)and tryptase(MCT)levels,which were determined to explore the effect of *** analysis was used to calculate the relationships between the peaks and the pharmacological effects to explore potentially anaphylactoid ***:The percentage of Annxin V positive cells and the degranulation ratio were markedly elevated in PMC treated with honeysuckle extract for more than 15 min(P<0.05).HIS and MCT level were significantly elevated after injection of honeysuckle extract for more than 15 *** of PMC and systemic symptoms were also changed compared with the controlled group(P<0.05).Regression analysis was used to calculate the relationship between peaks and pharmacological effects,and to determine peaks 7,10 and 13 as possible anaphylactoid ***:This study established a prospective method to clarify the anaphylactoid components of honeysuckle extract,which would provide guidance for screening anaphylactoid components in traditional Chinese medicine injections containing honeysuckle in the prescription.

关键词： anaphylaxis basis anaphylaxis effect honeysuckle extract spectrum-effect relationships

Postpolypectomy syndrome without abdominal pain led to sepsis/septic shock and gastrointestinal bleeding:A case report

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World Journal of Gastrointestinal Surgery 2023年第10期15卷 2343-2350页

作者： Fang-Zhi Chen Lin Ouyang Xiao-Li Zhong Jin-Xiu Li yan-yan zhou Department of Gastroenterology The Second Affiliated HospitalHengyang Medical SchoolUniversity of South ChinaHengyang 421001Hunan ProvinceChina Department of Critical Care Medicine The Second Xiangya HospitalCentral South UniversityChangsha 410011Hunan ProvinceChina

BACKGROUND Postpolypectomy syndrome(PPS)is a rare postoperative complication of colonic *** presents with abdominal pain and fever accompanied by coagulopathy and elevated inflammatory *** prognosis is usually good,and it only requires outpatient treatment or observation in a general ***-ever,it can be *** SUMMARY The patient was a 58-year-old man who underwent two colonic polypectomies,each resulting in life-threatening sepsis,septic shock,and *** of the notable manifestations was a rapid drop in blood pressure,an increase in heart rate,loss of consciousness,and heavy sweating,accompanied by shortness of breath and decreased oxygen in the finger *** on the criteria of organ dysfunction due to infection,we diagnosed him with *** patient also experienced severe gastrointestinal bleeding after the second ***,he did not complain of any abdominal pain throughout the course of the *** had significantly elevated concentrations of inflammatory markers and *** for the absence of abdominal pain,his fever,significant coagulopathy,and elevated inflammatory marker concentrations were all consistent with *** computed tomography and superior mesenteric artery computed tomography angiography showed no free air or vascular ***,the diagnosis of colon perforation was not *** final blood culture results indicated Moraxella *** patient was transferred to the intensive care unit and quickly improved after fluid resuscitation,antibiotic treatment,oxygen therapy,and blood *** PPS may induce dysregulation of the systemic inflammatory response,which can lead to sepsis or septic shock,even in the absence of abdominal pain.

关键词： Postpolypectomy syndrome Abdominal pain Sepsis Gastrointestinal bleeding Case report

Reconfigurable mechanism-based metamaterials for ternary-coded elastic wave polarizers and programmable refraction control

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Applied Mathematics and Mechanics(English Edition) 2024年第7期45卷 1225-1242页

作者： zhou HU Zhibo WEI yan CHEN Rui ZHU School of Aerospace Engineering Beijing Institute of TechnologyBeijing100081China School of Mechanical Engineering Tianjin UniversityTianjin300350China Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education Tianjin UniversityTianjin300350China

Elastic metamaterials with unusual elastic properties offer unprecedented ways to modulate the polarization and propagation of elastic ***,most of them rely on the resonant structural components,and thus are frequency-dependent and ***,we present a reconfigurable 2D mechanism-based metamaterial which possesses transformable and frequency-independent elastic *** on the proposed mechanism-based metamaterial,interesting functionalities,such as ternarycoded elastic wave polarizer and programmable refraction,are ***,unique ternary-coded polarizers,with 1-trit polarization filtering and 2-trit polarization separating of longitudinal and transverse waves,are first ***,the strong anisotropy of the proposed metamaterial is harnessed to realize positive-negative bi-refraction,only-positive refraction,and only-negative ***,the wave functions with detailed microstructures are numerically verified.

关键词： elastic metamaterial elastic wave reconfigurable design zero mode ternary code programmable refraction

A Sustainable Dual Cross‑Linked Cellulose Hydrogel Electrolyte for High‑Performance Zinc‑Metal Batteries

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Nano-Micro Letters 2024年第6期16卷 63-75页

作者： Haodong Zhang Xiaotang Gan Yuyang yan Jinping zhou Hubei Engineering Center of Natural Polymers‑Based Medical Materials Key Laboratory of Biomedical Polymers of Ministry of EducationCollege of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072People’s Republic of China Zhongnan Hospital of Wuhan University Institute of Hepatobiliary Diseases of Wuhan UniversityTransplant Center of Wuhan UniversityWuhan 430072People’s Republic of China

Aqueous rechargeable Zn-metal batteries(ARZBs)are considered one of the most promising candidates for grid-scale energy ***,their widespread commercial application is largely plagued by three major challenges:The uncontrollable Zn dendrites,notorious parasitic side reactions,and sluggish Zn^(2+) ion *** address these issues,we design a sustainable dual crosslinked cellulose hydrogel electrolyte,which has excellent mechanical strength to inhibit dendrite formation,high Zn^(2+) ions binding capacity to suppress side reaction,and abundant porous structure to facilitate Zn^(2+) ions ***,the Zn||Zn cell with the hydrogel electrolyte can cycle stably for more than 400 h under a high current density of 10 mA cm^(−2).Moreover,the hydrogel electrolyte also enables the Zn||polyaniline cell to achieve high-rate and long-term cycling performance(>2000 cycles at 2000 mA g^(−1)).Remarkably,the hydrogel electrolyte is easily accessible and biodegradable,making the ARZBs attractive in terms of scalability and sustainability.

关键词： Cellulose Dual cross-linked Aqueous rechargeable Zn-metal batteries Hydrogel electrolyte

Clustering for Bivariate Functional Data

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Acta Mathematicae Applicatae Sinica 2024年第3期40卷 613-629页

作者： Shi-yun CAO yan-qiu zhou yan-ling WAN Tao ZHANG School of Science Guangxi University of Science and TechnologyLiuzhou 545006China School of Marxism Guangxi University of Science and TechnologyLiuzhou 545006China Key Laboratory of Intelligent Information Processing and Graph Processing Guangxi University of Science and TechnologyLiuzhou 545006China

In this paper,we consider the clustering of bivariate functional data where each random surface consists of a set of curves recorded repeatedly for each *** k-centres surface clustering method based on marginal functional principal component analysis is proposed for the bivariate functional data,and a novel clustering criterion is presented where both the random surface and its partial derivative function in two directions are *** addition,we also consider two other clustering methods,k-centres surface clustering methods based on product functional principal component analysis or double functional principal component *** results indicate that the proposed methods have a nice performance in terms of both the correct classification rate and the adjusted rand *** approaches are further illustrated through empirical analysis of human mortality data.

关键词： bivariate functional data -centres surface clustering functional principal component analysis partial derivative function