检索结果-南通市图书馆

Research in Astronomy and Astrophysics 2021年第3期21卷 235-242页

作者： Hai-bo Yuan Ding-Shan deng Yang Sun Department of Astronomy Beijing Normal UniversityBeijing 100875China

The Chinese Space Station Telescope(CSST)spectroscopic survey aims to deliver high-quality low-resolution(R>200)slitless spectra for hundreds of millions of targets down to a limiting magnitude of about 21 mag,distributed within a large survey area(17500 deg2)and covering a wide wavelength range(255-1000 nm by three bands GU,GV,and GI).As slitless spectroscopy precludes the usage of wavelength calibration lamps,wavelength calibration is one of the most challenging issues in the reduction of slitless spectra,yet it plays a key role in measuring precise radial velocities of stars and redshifts of *** this work,we propose a star-based method that can monitor and correct for possible errors in the CSST wavelength calibration using normal scientific observations,taking advantage of the facts that(ⅰ)there are about ten million stars with reliable radial velocities now available thanks to spectroscopic surveys like LAMOST,(ⅱ)the large field of view of CSST enables efficient observations of such stars in a short period of time,and(ⅲ)radial velocities of such stars can be reliably measured using only a narrow segment of CSST *** demonstrate that it is possible to achieve a wavelength calibration precision of a few km s^(-1) for the GU band,and about 10 to 20 kms^(-1) for the GV and GI bands,with only a few hundred velocity standard *** of the method to other surveys are also discussed.

关键词： methods:data analysis methods:statistical techniques:spectroscopic techniques:radial velocities stars:fundamental parameters stars:kinematics and dynamics

TRMT6 and TRMT61A facilitated acute pancreatitis severity via regulation of neutrophil function

在线全文

学校读者我要写书评

暂无评论

Science China Life Sciences 2025年

作者： Yuan Dong Li Su Sin Man Lam Cen Yan Yalan deng Guotao Lu Jinkui Yang Guanghou Shui Yingmei Feng Beijing Institute of Hepatology Beijing Youan HospitalCapital Medical University Department of Science and Development Beijing Youan HospitalCapital Medical University Laboratory for Clinical Medicine Capital Medical University Neuroscience Research Institute Peking University Center of Medical and Health AnalysisPeking University State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of Sciences Pancreatic Center Department of GastroenterologyAffiliated Hospital of Yangzhou UniversityYangzhou University Beijing Key Laboratory of Diabetes Research and Care Department of EndocrinologyBeijing Tongren HospitalCapital Medical University

Dear Editor,Type 2 diabetes mellitus (T2DM) has been identified as a risk factor for increased severity in acute pancreatitis (AP)(Mikóet al,2018).However,to date,no studies have simultaneously included healthy individuals,T2DM patients,and AP patients to investigate which diabetes-associated metabolites are linked to AP severity.

关键词：

Sulfolane‑Based Flame‑Retardant Electrolyte for High‑Voltage Sodium‑Ion Batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

nano-Micro Letters 2025年第2期17卷 498-516页

作者： Xuanlong He Jie Peng Qingyun Lin Meng Li Weibin Chen Pei Liu Tao Huang Zhencheng Huang Yuying Liu Jiaojiao deng Shenghua Ye Xuming Yang Xiangzhong Ren Xiaoping Ouyang Jianhong Liu Biwei Xiao Jiangtao Hu Qianling Zhang Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China College of Energy Engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China Shenzhen Eigen-Equation Graphene Technology Co.Ltd Shenzhen 518000People’s Republic of China

Sodium-ion batteries hold great promise as next-generation energy storage ***,the high instability of the electrode/electrolyte interphase during cycling has seriously hindered the development of *** particular,an unstable cathode–electrolyte interphase(CEI)leads to successive electrolyte side reactions,transition metal leaching and rapid capacity decay,which tends to be exacerbated under high-voltage ***,constructing dense and stable CEIs are crucial for high-performance *** work reports localized high-concentration electrolyte by incorporating a highly oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether,which exhibited excellent oxidative stability and was able to form thin,dense and homogeneous *** excellent CEI enabled the O3-type layered oxide cathode naNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(naNMF)to achieve stable cycling,with a capacity retention of 79.48%after 300 cycles at 1 C and 81.15%after 400 cycles at 2 C with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety of *** work provides a viable pathway for the application of sulfolane-based electrolytes on SIBs and the design of next-generation high-voltage electrolytes.

关键词： Sodium-ion batteries Sulfolane-based electrolyte High voltage Layered oxide cathode Flame retardant

Surgical treatment for primary angle closure-glaucoma: a Meta analysis

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2011年第3期4卷 223-227页

作者： bo-Lin deng, Jing Tian Evidence-Based Medicine Center School of Basic Medical Sciences Lanzhou University Lanzhou 730000 Gansu Province China Department of Ophthalmology Second Hospital of Lanzhou University Lanzhou 730000 Gansu Province China Department of Cardiovascular Medicine Second Hospital of Lanzhou University Lanzhou 730000 Gansu Province China

AIM To evaluate the efficacy and safety of trabeculectomy, phacotrabeculectomy plus intraocular lens implantation (phacotrab+IOL group) and phacoemulsification with IOL (phaco+IOL) in primary angle-closure glaucoma(PACG). METHODS: It was a systematic review and meta-analysis, randomized controlled trials(RCT) and clinical controlled trials (CCT) were collected through electronic searches of the Cochrane Library, PubMed, EMbase, Wanfang Database online, Chinese journal Full-text Database, Chinese Scientific Journals Full-text Database (from the date of building the database to October 2010) We also checked the bibliographies of retrieved articles. M the related data that matched our standards were abstracted. The quality of included trials was evaluated according to the Dutch Cochrane Centre. Rev Man 5.0 software was used for Meta-analysis. RESULTS: A total of 5 RCT and 11 CCT involving 1495 eyes were included. The results of meta-analysis showed that phacotrab+IOL group was superior than trabeculectomy(trab group) (MD -3.93,95% CI [-7.31, -0.54]) which was also superior than phaco+IOL group(MD 0.52,95%CI [0.10, 0.95]) in decreasing Intraocular Pressure(IOP). Phacotrab group(MD -1.45,95%CI [-1.68, -1.22])and phaco group (MD-1.12,95% CI [-1.87, -0.37])are both deeper than trab group in the anterior chamber depth. In increasing the coefficient of outflow facility of aqueous humor (C values) there was no statistical difference in the three groups. And there was no statistical difference between phacotrab groups and phaco groups in visual acuity but phacotrab group was superior than phaco group (MD 1.07, 95% CI [0.73, 1.40])in the use of IOP-lowering drugs. There was no statistical difference among three groups. CONCLUSION: Current evidence suggests that phacotrab+IOL group was superior than tab group which was also superior than phaco+IOL group in decreasing IOP. Phacotrab group and phaco group are both deeper than trab group in the anterior chamber depth. Phacotrab gro

关键词： trabeculectomy phacoemulsification phacotrabeculectomy primary angle-closure glaucoma meta-analysis

Six-fold swelling expansion microscopy assisted cell painting for high-content phenotypic screening

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

Optoelectronics Letters 2025年

作者： Junfang XIE Yipeng DONG Jin WANG Zhichao deng Jianguo TIAN Qing YE Key Laboratory of Weak-Light Nonlinear Photonics， Ministry of Education， School of Physics and TEDA Applied Physics， nankai University

Imaging-based phenotypic screening uses cellular phenotypes to describe the drug performance， which generally focuses on single cellular feature， lacking of a comprehensive characterization. Here， we propose a high content phenotypic screening method based on expansion microscopy (ExM) assisted Cell Painting， which enables multi-channel imaging with approximately 50 nm resolution. As a demonstration， we applied this method to a phenotypic screening involving five drugs. The morphological attributes of three subcellular structures were summarized to consist a “fingerprint” describing the drug effect. The proposed method can provide comprehensive and detailed clues for drug evaluation， enriching the content of phenotypic screening.

关键词：

Minimax entropy-based co-training for fault diagnosis of blast furnace

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2023年第7期59卷 231-239页

作者： Dali Gao Chunjie Yang bo Yang Yu Chen Ruilong deng The State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang UniversityHangzhou 310027China Jianwei Digital Sphere Co. LtdLianyungang 222113China Jiangsu Binxin Iron and Steel Group Co. LtdChongqing 401220China

Due to the problems of few fault samples and large data fluctuations in the blast furnace(BF)ironmaking process,some transfer learning-based fault diagnosis methods are *** vast majority of such methods perform distribution adaptation by reducing the distance between data distributions and applying a classifier to generate pseudo-labels for ***,since the training data is dominated by labeled source domain data,such classifiers tend to be weak classifiers in the target *** addition,the features generated after domain adaptation are likely to be at the decision boundary,resulting in a loss of classification ***,we propose a novel method called minimax entropy-based co-training(MMEC)that adversarially optimizes a transferable fault diagnosis model for the *** structure of MMEC includes a dual-view feature extractor,followed by two classifiers that compute the feature's cosine similarity to representative vector of each *** transfer is achieved by alternately increasing and decreasing the entropy of unlabeled target samples with the classifier and the feature extractor,*** BF fault diagnosis experiments show that our method improves accuracy by about 5%over state-of-the-art methods.

关键词： Co-training Fault diagnosis Blast furnace Minimax entropy Transfer learning

Causes and detection of coalfield fires, control techniques, and heat energy recovery: A review

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2020年第3期27卷 275-291页

作者： He-tao Su Fu-bao Zhou bo-bo Shi Hai-ning Qi Jin-chang deng School of Engineering and Technology China University of Geosciences(Beijing)Beijing 100083China Key Laboratory of Gas and Fire Control for Coal Mines(China University of Mining and Technology) Ministry of EducationXuzhou 221116China Key Laboratory of Deep GeoDrilling Technology Ministry of Natural ResourcesChina University of Geosciences(Beijing)Beijing 100083China

Coalfield fires are considered a global crisis that contributes significantly to environmental destruction and loss of coal resources and poses a serious threat to human safety and health. In this paper, research related to the initiation, development, and evolution of coalfield fires is reviewed. The existing detection and control techniques of coalfield fires are also reviewed. Traditional firefighting is associated with waste of resources, potential risks of recrudescence, potential safety hazards, extensive and expensive engineering works, and power shortages. Recently,coalfield fires have been recognized as having significant potential for energy conservation and heat energy recovery. Thermoelectric power generation is regarded as a suitable technology for the utilization of heat from coalfield fires. The extraction of heat from coalfield fires can also control coalfield fires and prevent reignition leading to combustion. Technologies for absorbing heat from burning coal and overlying rocks are also analyzed. In addition, the control mode of "three-region linkage" is proposed to improve firefighting efficiency. Integrating heat energy recovery with firefighting is an innovative method to control coalfield fires.

关键词： spontaneous coal combustion oxygen supply firefighting thermoelectric thermosyphon three-region linkage

在线全文

学校读者我要写书评

暂无评论

无线时间敏感网络技术综述

软件学报 2025年第1期36卷 184-202页

作者：乔萱李宗辉刘强艾渤万海邓仰东北京交通大学计算机与信息技术学院北京交通大学电子信息工程学院清华大学软件学院

由IEEE 802.1任务组开发的时间敏感网络标准可以用来构建高可靠、低延迟、低抖动的以太网,将时间敏感网络扩展到无线领域也是目前许多工作的研究重点.与传统的有线通信相比,无线的时间敏感网络不仅可以实现高可靠和低时延通信,还具有更... 详细信息

由IEEE 802.1任务组开发的时间敏感网络标准可以用来构建高可靠、低延迟、低抖动的以太网,将时间敏感网络扩展到无线领域也是目前许多工作的研究重点.与传统的有线通信相比,无线的时间敏感网络不仅可以实现高可靠和低时延通信,还具有更高的灵活性、更强的移动性以及更低的布线和维护成本等优点.因此,在面对未来无人驾驶、协作机器人、远程医疗控制等新兴应用时,无线时间敏感网络被认为是一种十分有前景的技术.无线网络一般可以分为基于基础设施的无线网络和无基础设施的无线网络,而后者基于移动性还可以分为两类:移动自组织网络和无线传感网络,因此主要从这3种网络类型出发,对其应用场景、相关技术、路由协议以及高可靠低时延传输进行了调研与综述.

关键词：时间敏感网络 5G 移动自组织网络无线传感网络

Comparison of Metal Dusting Behavior of Several Alloys

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2004年第3期11卷 48-52页

作者： HAN Guang-wei deng bo FENG Di Central Iron and Steel Research Institute

A comprehensive study on the mechanical behavior of foamed metals was demonstrated. The relationship among their mechanical properties,preparation method,porosity and the structure was briefly studied as well.

关键词： foamed metal porous material porous metal cellular solid

BeiDou Integrated Disaster Reduction Application Platform

在线全文

学校读者我要写书评

暂无评论

China Communications 2015年第8期12卷 169-182页

作者： Lü Xuefeng LIAO Yongfeng LI bo deng Lan national Disaster Reduction Center of China Key Laboratory of Integrated Disaster Assessment and Risk Government of the Ministry of Civil Affairs

To better improve the emergency communication and location-based services of disaster information reporting network for serious natural response and relieL disaster emergency the national natural disaster reduction application platform based on BeiDou navigation satellite system is constructed. The administrative distributed platform is integrated with BeiDou positioning and multiple communication ways so as to achieve main disaster reduction application services, including disaster information acquisition and monitoring, emergency relief for trapped people, on-site emergency relief command service, relief supplies＇ transportation monitoring, and disaster information publishing service. By the platform, serious disaster information reporting time may be reduced to one hour and the emergency decision-making information service for serious natural disasters can be effectively improved, and it will be helpful to provide technical references for the industrial application and promotion of BeiDou inte- grated disaster reduction.

关键词： beidou navigation satellite sys-tem disaster location service emergencycommunication disaster information manage- ment disaster emergency relief