检索结果-南通市图书馆

Biomass materials for zinc-based sustainable and green energy storage devices:Strategy and mechanism

在线全文

学校读者我要写书评

暂无评论

Nano Research 2025年第1期18卷 294-314页

作者： xiaotong Yang xiaoxin nie Chenke Tang Yiyang xiao Qiongguang Li Du Yuan Meng Yao College of Materials Science and Engineering Changsha University of Science and TechnologyChangsha 410004China College of Materials Science and Engineering Sichuan UniversityChengdu 610065China Anhui Province International Research Center on Advanced Building Materials School of Materials and Chemical EngineeringAnhui Jianzhu UniversityHefei 230601China

As next-generation rechargeable alternatives,zincbased energy storage devices(ZESs)are being intensely explored due to their merits of abundant resource,low cost,safety and environmental ***,ZESs face a succession of critical challenges on pursuing advancing performance,including the stability and kinetics of cathode,stability and transport of zinc electrolyte,reversibility and deep utilization of metallic Zn ***,possessing unique molecular structures with abundant functionals groups,motivates the interdisciplinary field emerging from biomass and aqueous rechargeable *** its high compatibility with ZES design,we here summarize the application of biomass materials in ZESs from the aspects of cathode,electrolyte,membrane/separator and Zn anode,with their corresponding operational mechanisms and attractive functionalities from polymeric ***,the outlooks and perspectives are provided,regarding current challenges and future *** anticipate our minireview paves way on exploring the roles of biomass in aqueous rechargeable batteries.

关键词： zinc biomass materials skeleton/host coating solid-electrolyte interphase(SEI)

基于CorelDRAW环境下渐变色在专题地图中的应用

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

测绘与空间地理信息 2017年第3期40卷 196-198页

作者：刘美春肖剑平聂晓倩魏致富武汉市测绘研究院

数字制图技术使专题地图在色彩设计上十分便捷,设计成果更趋向于美观和艺术效果。本文全面介绍CorelDRAW环境中渐变色的类型、渐变色在专题图中的表现形式以及应用效果,分析渐变色在专题地图中的应用前景。

关键词：渐变色色相色彩调和艺术效果

A Few Frontier Issues in Ocean Engineering Mechanics

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2021年第1期35卷 1-11页

作者： LI Jia-chun nie Bing-chuan Key Laboratory for Mechanics in Fluid Solid Coupling System Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment Beijing 100044China

In this review,we primarily address the present state of the arts and latest progresses in a few frontier issues mostly relevant to free surface/interface in ocean *** include TC(tropical cyclone)induced extreme surface wave,sloshing of LNG(liquefied natural gas),cavitation/bubble dynamics and VIM(vortex-induced motion)and VIV(vortex-induced vibration).In addition to general description,we mainly focus on the recent advances and challenging aspects of above-mentioned *** by the achievements in the previous 70 years,mankind starts a new round of ocean exploration ***,we can find obvious trends:the realm of ocean engineering is expanding from sea surface to deep sea,from low and middle latitude to polar region and from fossil to renewable energy in near future.

关键词： tropical cyclone wind wave sloshing cavitation bubble vortex-induced vibration

A modified HEART risk score in chest pain patients with suspected non-ST-segment elevation acute coronary syndrome

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2016年第1期13卷 64-69页

作者： chun-Peng MA xiao WANG Qing-Sheng WANG xiao-Li LIU xiao-Nan HE Shao-Ping nie Emergency & Critical Care Center Beijing Anzhen Hospital Capital Medical University Beijing China Department of Cardiology the First Hospital of Qinhuangdao Hebei Medical University Hebei China Department of Endocrinology the First Hospital of Qinhuangdao Hebei Medical University Hebei China

ObjectiveTo validate a modified HEART [History, Electrocardiograph （ECG）, Age, Risk factors and Troponin] risk score in chest pain patients with suspected non-ST-segment elevation acute coronary syndrome （NSTE-ACS） in the emergency department （ED）.Methods This retrospective cohort study used a prospectively acquired database and chest pain patients admitted to the emergency department with suspected NSTE-ACS were enrolled. Data recorded on arrival at the ED were used. The serum sample of high-sensitivity cardiac Troponin I other than conventional cardiac Troponin I used in the HEART risk score was tested. The modified HEART risk score was calculated. The end point was the occurrence of major adverse cardiac events （MACE） defined as a composite of acute myocardial infarction （AMI）, percu-taneous intervention （PCI）, coronary artery bypass graft （CABG）, or all-cause death, within three months after initial *** A total of 1,300 patients were enrolled. A total of 606 patients （46.6%） had a MACE within three months： 205 patients （15.8%） were diag-nosed with AMI, 465 patients （35.8%） underwent PCI, and 119 patients （9.2%） underwent CABG. There were 10 （0.8%） deaths. A progres-sive, significant pattern of increasing event rate was observed as the score increased （P ＆lt; 0.001 byχ2 for trend）. The area under the receiver operating characteristic curve was 0.84. All patients were classified into three groups： low risk （score 0-2）, intermediate risk （score 3-4）, and high risk （score 5-10）. Event rates were 1.1%, 18.5%, and 67.0%, respectively （P ＆lt; 0.001）.ConclusionsThe modified HEART risk score was validated in chest pain patients with suspected NSTE-ACS and may complement MACE risk assessment and patients triage in the ED. A prospective study of the score is warranted.

关键词： Acute coronary syndrome Chest pain Emergency Risk assessment Troponin 1

Postoperative secondary aggravation of obstructive sleep apneahypopnea syndrome and hypoxemia with bilateral carotid body tumor:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2020年第23期8卷 6150-6157页

作者： Xi Yang xiao-Guang He Dong-Hui Jiang chun Feng Rui nie Department of Otolaryngology Head and Neck Surgery The First Affiliated Hospital of Kunming Medical UniversityKunming 650032Yunnan ProvinceChina

BACKGROUND Carotid body tumor(CBT)is a chemoreceptor tumor located in the carotid body,accounting for approximately 0.22%of head and neck *** is the main treatment method for the *** SUMMARY We reviewed the diagnosis and treatment of one patient who had postoperative secondary aggravation of obstructive sleep apnea–hypopnea syndrome(OSAHS)and hypoxia after surgical resection of bilateral *** patient was admitted,and relevant laboratory and imaging examinations,and polysomnography(PSG)were *** the definitive diagnosis,continuous positive airway pressure(CPAP)treatment was given,which achieved good *** This case suggested that aggravation of OSAHS and hypoxemia is possibly caused by the postoperative complications after bilateral CBTs,and diagnosis by PSG and CPAP treatment are helpful for this patient.

关键词： Carotid body tumor Continuous positive airway pressure Hypoxemia Obstructive sleep apnea-hypopnea syndrome Head and neck Case report

SYNTHESIS AND CHARACTERIZATION OF WATER-SOLUBLE CdSe NANOPARTICLES CAPPED BY AOT

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

Chinese Journal of Polymer Science 2013年第9期31卷 1284-1289页

作者： Yan-ming Chen xiao-bo nie School of Petrochemical Engineering Shenyang University of Technology

Water-soluble CdSe nanoparticles were synthesized using AOT （sodium bis（2-ethylehexyl）-sulfosuccinate） as stabilizer, cadmium acetate and NazSeSO3 as precursors in aqueous phase. The influence of some key factors, such as reaction time, temperature, concentration and molar ratio of precursors on the optical properties of CdSe nanoparticles was systematically investigated through UV-Vis and PL spectra. Powder X-ray diffraction （XRD） was used to characterize the crystalline structure of synthesized CdSe nanoparticles. As-prepared CdSe nanoparticles exhibit an apparent quantum confinement effect and typical hexagonal wurtzite structures. Finally, the optimal experimental conditions were obtained.

关键词： AOT CdSe Nanoparticles Aqueous phase.

Outcomes of catheter-directed thrombolysis versus systemic thrombolysis in the treatment of pulmonary embolism: a metaanalysis

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2023年第6期20卷 459-468页

作者： Huang-Tai MIAO Ying LIANG xiao-Ying LI xiao WANG Hui-Juan ZUO Zhe-chun ZENG Shao-Ping nie Center for Coronary Artery Disease Beijing Anzhen HospitalCapital Medical UniversistyBeijingChina Emergency&Critical Care Center Beijing Anzhen HospitalCapital Medical UniversityBeijingChina Department of Health Care for Cadres Beijing Jishuitan HospitalBeijingChina Department of Clinical&Community Cardiovascular Disease Prevention Beijing Institute of Heart Lung and Blood Vessel DiseaseBeijing Anzhen HospitalCapital Medical UniversityBeijingChina

OBJECTIVE To evaluate the safety and efficacy of catheter-directed thrombolysis(CDT)versus systemic thrombolysis(ST)in the treatment of pulmonary embolism(PE).METHODS The Cochrane Library,PubMed,and Embase databases were searched to collect the literature on the comparison of the results of CDT and ST in the treatment of PE from the beginning of their records to May 2020,and meta-analysis was performed by STATA software(version 15.1).Using standardized data-collection forms,the authors screened the studies and independently extracted data,and assessed the quality of the studies using the Newcastle-Ottawa Scale for cohort *** studies that examined the following results were included in the current study:in-hospital mortality,all-cause bleeding rate,gastrointestinal bleeding rate,intracranial hemorrhage rate,the incidence of shock,and hospital length of *** A total of eight articles,with 13,242 participants,involving 3962 participants in the CDT group and 9280 participants in the ST group were *** compared with ST in the treatment of PE can significantly affect in-hospital mortality rate[odds ratio(OR)=0.41,95%CI:0.30–0.56,P<0.05],all-cause bleeding rate(OR=1.20,95%CI:1.04–1.39,P=0.012),gastrointestinal bleeding rate(OR=1.43,95%CI:1.13–1.81,P=0.003),the incidence of shock(OR=0.46,95%CI:0.37–0.57,P<0.05),and hospital length of stay[standard mean difference(SMD)=0.16,95%CI:0.07–0.25,P<0.05].However,there was no significant effect on intracranial hemorrhage rate in patients with PE(OR=0.70,95%CI:0.47–1.03,P=0.070).CONCLUSIONS CDT is a viable alternative to ST in the treatment of PE,as it can significantly reduce in-hospital mortality rate,all-cause bleeding rate,gastrointestinal bleeding rate,and incidence of ***,CDT may prolong hospital length of stay to a certain *** research is needed to evaluate the safety and efficacy of CDT and ST in the treatment of acute PE and other clinical outcomes.

关键词： thrombolysis mortality treatment

Continuous Subsonic-Sonic Flows in a Convergent Nozzle

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2018年第4期34卷 749-772页

作者： Yuan Yuan nie chun Peng WANG School of Mathematics Jilin University

This paper concerns continuous subsonic-sonic potential flows in a two-dimensional conver- gent nozzle. It is shown that for a given nozzle which is a perturbation of a straight one, a given point on its wall where the curvature is zero, and a given inlet which is a perturbation of an arc centered at the vertex, there exists uniquely a continuous subsonic-sonic flow whose velocity vector is along the normal direction at the inlet and the sonic curve, which satisfies the slip conditions on the nozzle walls and whose sonic curve intersects the upper wall at the given point. Furthermore, the sonic curve of this flow is a free boundary, where the flow is singular in the sense that the speed is only C1/2 H6lder continuous and the acceleration blows up. The perturbation problem is solved in the potential plane, where the flow is governed by a free boundary problem of a degenerate elliptic equation with two free boundaries and two nonlocal boundary conditions, and the equation is degenerate at one free boundary.

关键词： Continuous subsonic-sonic flow free boundary nonlocal boundary condition degeneracy,singularity

Low spatial correlation at base station uniform linear antennas

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2006年第4期17卷 709-711页

作者： xiao Hailin nie Zaiping School of Electronic Engineering Univ. of Electronic Science and Technology Chengdu 610054 E R. China

A spatial channel propagation model is presented. Consider a uniform linear antenna （ULA） at the base station （BS） and narrowband signals transmitted at the mobile. In two types of propagating environments： indoor and outdoor, performance of low spatial correlation is investigated and some results are provided, which are significant to an,3. lyze the performance of diversity systems and configuration of army. The results also show that the configuration of array with either smaller angular spread or bigger angle of arrival （AOA） dominates the impact on spatial correlation, and that increasing angular spread or decreasing AOA diminishes, or even eliminates this impact.

关键词： spatial correlation uniform linear antennas angular spread angle of arrival.