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基于Aspen Plus的等压压缩空气储能系统性能仿真及分析

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综合智慧能源 2024年第12期46卷 72-80页

作者：胡雪如邢令利李原圆苏文刘鹏飞丁若晨蔺新星湖南科技大学化学化工学院湖南湘潭411201 中南大学能源科学与工程学院长沙410083 中国三峡集团科学技术研究所北京100038

压缩空气储能是解决可再生能源发电并网、提高电网稳定性的有效方法。为减少储气库体积、维持系统工况稳定,采用工业流程模拟软件Aspen Plus建立了100 MW×4 h等压压缩空气储能(I-CAES)系统的热力学仿真模型,计算了设计工况下的系统性能... 详细信息

压缩空气储能是解决可再生能源发电并网、提高电网稳定性的有效方法。为减少储气库体积、维持系统工况稳定,采用工业流程模拟软件Aspen Plus建立了100 MW×4 h等压压缩空气储能(I-CAES)系统的热力学仿真模型,计算了设计工况下的系统性能,分析了压缩机出口温度及压缩膨胀级数对系统运行的影响。结果表明,当压缩机出口温度为160℃时,4级压缩-4级膨胀的I-CAES系统储能效率可达62.61%,储能密度为5.99 k W·h/m^(3);压缩机出口温度每升高10℃,储能密度及效率分别增加2.66 k W·h/m^(3),1.49百分点;压缩膨胀级数每增加1,储能密度及效率分别增加6.34 k W·h/m^(3),0.81百分点。

关键词：等压压缩空气储能可再生能源 Aspen Plus 压缩机出口温度压缩膨胀级数储能效率储能密度

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Breakdown of effective-medium theory by a photonic spin Hall effect

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Science China(Physics,Mechanics & Astronomy) 2023年第11期66卷 145-154页

作者： Shuaijie Yuan xinxing Zhou Yu Chen Yuhan Zhong Lijuan Sheng Hao Hu Hongsheng Chen Ido Kaminer Xiao lin Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Synergetic Innovation Center for Quantum Effects and ApplicationsSchool of Physics and ElectronicsHunan Normal UniversityChangsha410081China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong ProvinceInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen518060China Interdisciplinary Center for Quantum Information State Key Laboratory of Extreme Photonics and InstrumentationZJU-Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou310027China International Joint Innovation Center Electromagnetics Academy at Zhejiang UniversityZhejiang UniversityHaining314400China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore639798Singapore Key Laboratory of Radar Imaging and Microwave Photonics Ministry of EducationCollege of Electronic and Information EngineeringNanjing University of Aeronautics and AstronauticsNanjing211106China Key Laboratory of Advanced Micro/Nano Electronic Devices&Smart Systems of Zhejiang Jinhua Institute of Zhejiang UniversityZhejiang UniversityJinhua321099China Shaoxing Institute of Zhejiang University Zhejiang UniversityShaoxing312000China Department of Electrical Engineering Technion-Israel Institute of TechnologyHaifa32000Israel

Effective-medium theory pertains to the theoretical modelling of homogenization,which aims to replace an inhomogeneous structure of subwavelength-scale constituents with a homogeneous effective *** effective-medium theory is fundamental to various realms,including electromagnetics and material science,since it can largely decrease the complexity in the exploration of light-matter interactions by providing simple acceptable ***,the effective-medium theory is thought to be applicable to any all-dielectric system with deep-subwavelength constituents,under the condition that the effective medium does not have a critical angle,at which the total internal reflection *** we reveal a fundamental breakdown of the effective-medium theory that can be applied in very general conditions:showing it for deep-subwavelength all-dielectric multilayers even without a critical *** finding relies on an exotic photonic spin Hall effect,which is shown to be ultrasensitive to the stacking order of deep-subwavelength dielectric layers,since the spin-orbit interaction of light is dependent on slight phase accumulations during the wave *** results indicate that the photonic spin Hall effect could provide a promising and powerful tool for measuring structural defects for all-dielectric systems even in the extreme nanometer scale.

关键词： photonic spin Hall effect effective-medium theory spin-orbit interaction of light

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福建省《医疗机构标志》标准调查分析

中国卫生法制 2016年第6期24卷 30-34页

作者：林心星郑锦其陈建明郑晓霞张海燕黄少伟福建省卫生计生监督所福州350007

本文选取49家医疗机构和17家卫生监督机构作为调查对象,通过对医疗机构工作人员、卫生监督员和社会人群的问卷调查,了解医疗机构工作人员、卫生监督员和社会人群对《医疗机构标志》(WS 307-2009)标准的认知度;通过现场核实医疗机构对医... 详细信息

本文选取49家医疗机构和17家卫生监督机构作为调查对象,通过对医疗机构工作人员、卫生监督员和社会人群的问卷调查,了解医疗机构工作人员、卫生监督员和社会人群对《医疗机构标志》(WS 307-2009)标准的认知度;通过现场核实医疗机构对医疗机构标志的使用现状,发现《医疗机构标志》目前在医疗机构的具体执行情况以及存在的问题,为《医疗机构标志》标准修订提供依据。

关键词：医疗机构标志问卷调查标准修订

In situ TEM observation of neck formation during oriented attachment of PbSe nanocrystals

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Nano Research 2019年第10期12卷 2549-2553页

作者： Yu Wang xinxing Peng Alex Abelson Bing-Kai Zhang Caroline Qian Peter Ercius lin-Wang Wang Matt Law Haimei Zheng Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA Department of Materials Science and Engineering University of CaliforniaBerkeleyCalifornia 94720USA State Key Lab of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Department of Chemistry University of CaliforniaIrvineCalifornia 92697USA National Center for Electron Microscopy Molecular FoundryLawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA

Oriented attachment of nanocrystals is an important route to constructing epitaxially-connected nanocrystal superlattices for various *** oriented attach me nt of semic on ductor nano crystals,neck can be formed betwee n nan ocrystals and it strongly influe nces the properties of the resulting ***,the neck formation mechanism is poorly ***,we use in situ liquid cell transmission electro n microscopy(TEM)to directly observe the initiatio n and growth of homoepitaxial n ecks betwee n PbSe nano crystals with atomic *** find that neck initiatio n occurs slowly(~10 s)whe n two nano crystals approach to each other within an edge-to-edge dista nee of 0.6 *** neck initiation,Pb and Se atoms defuse from other facets into the gap,forming"dynamic reversible"*** the filament(n eck)width is larger than a critical size of 0.9 nm,it gradually(15 s)widens into a 3-nm-wide n *** atomic structure of the neck is further obtained using ex situ aberration-corrected seanning TEM *** initiation and growth mechanisms are elucidated with density functional theory calculati *** direct unveiling of the atomic pathways of neck formatio n duri ng oriented attach me nt shed light into the fabrication of nanocrystal superlattices with improved structural order and electronic properties.

关键词： PbSe nanocrystals quantum dots superlattices necking oriented attachment liquid cell transmission electron microscopy(TEM)

The influence of tag sequence on recombinant humanized collagen(rhCol)and the evaluation of rhCol on Schwann cell behaviors

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Regenerative Biomaterials 2023年第1期10卷 1592-1603页

作者： Mingxuan Bai Ning Kang Yang Xu Jing Wang xinxing Shuai Caojie Liu Yixuan Jiang Yu Du Ping Gong Hai lin Xingdong Zhang State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases West China Hospital of StomatologySichuan UniversityChengduSichuan 610041P.R.China National Engineering Research Center for Biomaterials College of Biomedical EngineeringSichuan UniversityChengduSichuan 610065P.R.China

Recombinant humanized collagen(rhCol)was an extracellular matrix(ECM)-inspired biomimetic biomaterial prepared by biosynthesis technology,which was considered non-allergenic and could possibly activate tissue *** influence of tag sequence on both structures and performances of rhCol type III(rhCol III)was investigated,and the effect of rhCol III on cell behaviors was evaluated and discussed using Schwann cells(SCs)as in vitro model that was critical in the repair process after peripheral nerve *** results demonstrated that the introduction of tag sequence would influence both advanced structures and properties of rhCol III,while rhCol III regulated SCs adhesion,spreading,migration and ***,both nerve growth factor and brain-derived neurotrophic factor increased when exposed to rhCol *** the downstream proteins of integrin-mediated cell adhesions,phosphorylation of focal adhesion kinase and expression of vinculin was up-regulated along with the promotion of SCs adhesion and *** current findings contributed to a better knowledge of the interactions between rhCol III and SCs,and further offered a theoretical and experimental foundation for the development of rhCol III-based medical devices and clinical management of peripheral nerve injury.

关键词： recombinant humanized collagen Tag sequence peripheral nerve regeneration Schwann cell

Higher alcohol synthesis over Cu-Fe composite oxides with high selectivity to C_(2+)OH

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Journal of Energy Chemistry 2013年第1期22卷 107-113页

作者： Zhenghong Bao Kang Xiao Xingzhen Qi xinxing Wang Liangshu Zhong Kegong Fang Minggui lin Yuhan Sun Low-Carbon Conversion Center Shanghai Advanced Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences

Cu-Fe composite oxides were prepared by co-precipitation method and tested for higher alcohol synthesis from syngas. The selectivity to C2＋OH and C6＋OH in alcohol distribution was very high while the methane product fraction in hydrocarbon distribution was rather low, demonstrating a promising potential in higher alcohols synthesis from syngas. The distribution of alcohols and hydrocarbons approximately obeyed Anderson-Schulz-Flory distribution with similar chain growth probability, indicating alcohols and hydrocarbons derived from the same intermediates. The effects of Cu/Fe molar ratio, reaction temperature and gas hourly space velocity （GHSV） on catalytic performance were studied in detail. The sample with a Cu/Fe molar ratio of 10/1 exhibited the best catalytic performance. Higher reaction temperature accelerated water-gas-shift reaction and led to lower total alcohols selectivity. GHSV showed great effect on catalytic performance and higher GHSV increased the total alcohol selectivity, indicating there existed visible dehydration reaction of alcohol into hydrocarbon.

关键词： higher alcohol synthesis syngas Cu-Fe composite oxides molar ratio GHSV

Analysis of GNSS radio occultation data from satellite ZH-01

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Earth and Planetary Physics 2018年第6期2卷 499-504页

作者： Yan Cheng Jian lin XuHui Shen Xiang Wan xinxing Li WenJun Wang Space Star Technology Company Limited Beijing 100194 China Institute of Seismology China Earthquake Administration Wuhan 430071 China Institute of Crustal Dynamics China Earthquake Administration Beijing 100085 China

The electromagnetic satellite Zhangheng 01(ZH-01) was successfully launched on February 2, 2018. The GNSS Radio Occultation(GRO) receiver on board the satellite is able to observe the occultation events of GPS and BeiDou navigation satellites. We analyzed the data acquired during the in-orbit testing period. We concludes that the GRO ionosphere inversion results are reasonable,the trend is correct, the satellite can observe about 600 ionosphere occultation events each day. The global coverage of more than 30000 consecutive GRO events in more than two months were analyzed and compared with COSMIC observations: both the GRO and COSMIC occultation can realize global coverage: the Nm F2 and Hm F2 global distributions are similar and change obviously with latitude. We used three digisondes at different latitudes to analyze and compare the spatio-temporally consistent GRO data: the RMSE of GRO Nm F2 relative to digisonde is better than 9.41%, the correlation coefficient is better than 0.8682: the relative RMSE of Hm F2 is better than 7.80% and the correlation coefficient is better than 0.7066.

关键词： ZH-01 GRO occultation ionosphere inversion digisonde

Single-cell landscape of malignant ascites frompatients with metastatic colorectal cancer

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Cancer Communications 2024年第7期44卷 713-717页

作者： Haiyang Zhou Jiahui Yin Anqi Wang Xiaomao Yin Taojun Jin Kai Xu lin Zhu Jiexuan Wang Wenqiang Wang Wei Zhang Xinxiang Li Zhiqian Hu xinxing Li Division of Colorectal Surgery Changzheng HospitalNavy Medical UniversityShanghaiP.R.China Institute of Higher Education Tongji UniversityShanghaiP.R.China Department of Gastrointestinal Surgery Tongji HospitalTongji University School of MedicineShanghaiP.R.China Department of Gastroenterology Shuguang HospitalShanghai University of Traditional Chinese MedicineShanghaiP.R.China Department of Colorectal Surgery Fudan University Shanghai Cancer CenterShanghaiP.R.China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghaiP.R.China

The presence of malignant ascites in colorectal cancer(CRC)patients is associated with a poor prognosis,a high risk of recurrence,and resistance to chemotherapy and immune therapy[1–3].Understanding the complex interactions among different kinds of cells and the ecosystem of peritoneal metastasized colorectal cancer(pmCRC)ascites may provide insights into effective treatment strategies.

关键词： ascites colorectal patients

基于独立成分分析的表面缺陷特征提取与识别方法

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计算机辅助设计与图形学学报 2012年第4期24卷 506-513页

作者：周新星王典洪孙林中国地质大学(武汉)机械与电子信息学院武汉430074 武汉钢铁(集团)公司武汉430083

为了提取表面缺陷图像特征,常对图像进行线性变换,但通常的wavelet变换、Gabor变换及其基函数都是预先定义和不变的,不能适应于缺陷图像的特点.为此提出基于独立成分分析(ICA)和拓扑独立成分分析(TICA)的特征提取方法,并将其应用于冷轧... 详细信息

为了提取表面缺陷图像特征,常对图像进行线性变换,但通常的wavelet变换、Gabor变换及其基函数都是预先定义和不变的,不能适应于缺陷图像的特点.为此提出基于独立成分分析(ICA)和拓扑独立成分分析(TICA)的特征提取方法,并将其应用于冷轧带钢表面缺陷自动识别.首先利用ICA和TICA从缺陷集中自适应地估计出基函数和滤波器,这些基适应于缺陷图像的特点;然后用与基对应的滤波器对缺陷图像滤波,提取滤波响应作为特征向量;最后用支持向量机对样本进行分类识别.该方法建立在对缺陷集无监督学习的基础上,能够自适应地提取缺陷图像的显著特征,且计算简单,可并行处理.实验结果表明,文中方法对形状类缺陷、纹理类缺陷及其他缺陷的识别率都非常高,总体识别率可达95.52%.

关键词：独立成分分析拓扑独立成分分析表面检测特征提取基函数滤波器