检索结果-南通市图书馆

Efficacy of rapid antigen self-testing for SARS-CoV-2 screening:Real-world evidence from a prospective cohort study

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第5期11卷 88-90页

作者： Yaoyue hu Bin Peng Jie Fan Zhu Yang Jianjiang Xue Quanxin Long Jie Xia Yuan hu Xuefei cai Li Zhou Ailong huang School of Public Health Chongqing Medical UniversityChongqing 400016China The Second Affiliated Hospital of Chongqing Medical University Chongqing 400016China Clinical Laboratory University-Town Hospital of Chongqing Medical UniversityChongqing 401331China Key Laboratory of Molecular Biology on Infectious Diseases Designated by the Chinese Ministry of Education Chongqing Medical UniversityChongqing 400016China

Antigen rapid diagnostic tests(Ag-RDTs)have been considered and implemented as an important diagnostic and screening tool to identify SARS-CoV-2 infections in community settings.1 Ag-RDTs are less sensitive,particularly in asymptomatic populations,compared with laboratorybased viral nucleic acid amplification tests(NAATs)such as reverse transcription polymerase chain reaction(RT-PCR).2 However,taking into account the facts that Ag-RDTs are effective for identifying most contagious individuals,they are faster and less expensive than RT-PCR,as well as that RT-PCR could produce positive results for weeks to months after the infection,2 WHO recommends Ag-RDTs be offered as COVID-19 self-testing for screening purposes in addition to professionally administered testing services regardless of the community transmission level.

关键词： testing faster rapid

Efficient Ship:A Hybrid Deep Learning Framework for Ship Detection in the River

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

工程与科学中的计算机建模(英文) 2024年第1期138卷 301-320页

作者： huafeng Chen Junxing Xue Hanyun wen Yurong hu Yudong Zhang School of Computer Engineering Jingchu University of TechnologyJingmen448000China School of Computer Science Yangtze UniversityJingzhou434023China School of Computing and Mathematic Sciences University of LeicesterLeicesterLE17RHUK

Optical image-based ship detection can ensure the safety of ships and promote the orderly management of ships in offshore *** deep learning researches on optical image-based ship detection mainly focus on improving one-stage detectors for real-time ship detection but sacrifices the accuracy of *** solve this problem,we present a hybrid ship detection framework which is named EfficientShip in this *** core parts of the EfficientShip are DLA-backboned object location(DBOL)and CascadeRCNN-guided object classification(CROC).The DBOL is responsible for finding potential ship objects,and the CROC is used to categorize the potential ship *** also design a pixel-spatial-level data augmentation(PSDA)to reduce the risk of detection model *** compare the proposed EfficientShip with state-of-the-art(SOTA)literature on a ship detection dataset called *** show our ship detection framework achieves a result of 99.63%(mAP)at 45 fps,which is much better than 8 SOTA approaches on detection accuracy and can also meet the requirements of real-time application scenarios.

关键词： Ship detection deep learning data augmentation object location object classification

不同烹饪方式下野生蔬菜中活性成分的比较研究

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

现代食品科技 2019年第7期35卷 152-157,23页

作者：胡文才杨帅陈祖明乐山职业技术学院旅游系四川乐山614000 四川旅游学院烹饪学院四川成都610100

本文选取马齿苋、蕨菜、椿菜和百花菜为材料,研究其在微波处理、爆炒、焯制和煮制等不同烹饪方式下的总多酚、总黄酮以及叶酸等活性成分含量的变化,并以转移率、保存率和损失率等为评价指标,通过这三种评价指标可以进行对比分析,得出不... 详细信息

本文选取马齿苋、蕨菜、椿菜和百花菜为材料,研究其在微波处理、爆炒、焯制和煮制等不同烹饪方式下的总多酚、总黄酮以及叶酸等活性成分含量的变化,并以转移率、保存率和损失率等为评价指标,通过这三种评价指标可以进行对比分析,得出不同烹饪方式下野生蔬菜中各种活性成分的变化情况。实验结果表明,爆炒后椿菜总多酚保存率最高;四种蔬菜经过微波处理后,总多酚转移率大都高于其他烹饪方式,煮制是使总多酚转移率最低的烹饪方式;煮制后,马齿苋、蕨菜、椿菜和百花菜的实际热损失率较高,蕨菜可达到43.37%,微波条件下均为负数。爆炒方式下百花菜总黄酮保存率处于最高水平,为83.14%,微波是最不利于总黄酮保存的一种烹饪方式;为保证总黄酮转移率,宜采用煮制方式;煮制后的蔬菜实际热损失率整体高于其他烹饪方式。此外,焯制方式处理后的蔬菜叶酸含量最高。由此可见,不同烹饪方式下,野生蔬菜中活性成分的变化各不相同,需要合理选择烹饪方式。

关键词：不同烹饪方式野生蔬菜抗氧化活性成分

Impact of continuous care on cardiac function in patients with lung cancer complicated by coronary heart disease

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第2期12卷 314-321页

作者： Ting Gao Jin-Lan Luo Pan Guo Xi-wen hu Xiao-Yan Wei Yan hu Division of Cardiovascular First Ward Department of Internal MedicineLiyuan HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430077Hubei ProvinceChina Department of Cardiovascular Medicine Wuhan Wuchang HospitalWuhan 430063Hubei ProvinceChina Cardiovascular Clinical Medical Center Liyuan HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430077Hubei ProvinceChina Department of Second Thoracic Surgery Hubei Cancer HospitalWuhan 430079Hubei ProvinceChina

BACKGROUND Despite sharing similar pathogenic factors,cancer and coronary heart disease(CHD)occur in comparable populations at similar ages and possess similar susceptibility ***,it is increasingly commonplace for patients to experience the simultaneous occurrence of cancer and CHD,a trend that is steadily *** To determine the impacts of continuing care on lung cancer patients with CHD following percutaneous coronary intervention(PCI).METHODS There were 94 lung cancer patients with CHD following PCI who were randomly assigned to the intervention group(n=38)and the control group(n=41).In the intervention group,continuing care was provided,while in the control group,routine care was *** evaluation of cardiac and pulmonary function,medication compliance,a 6-min walk test,and patient quality of life was *** Differences between the two groups were significant in left ventricular ejection fraction,6-min walk test,oxygen uptake,quality of life and medication compliance(P<0.05).In comparison with the control group,the enhancement in the intervention group was more *** intervention group had more patients with high medication compliance than the control group,with a statistically significant difference(P<0.05).CONCLUSION After undergoing PCI,lung patients with CHD could benefit from continued care in terms of cardiac and pulmonary function,medications compliance,and quality of life.

关键词： Lung cancer Continuing care Coronary heart disease Percutaneous coronary intervention

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

微波烹调方式对乌鸡蛋黄脂质变化规律的影响

现代食品科技 2019年第6期35卷 223-229页

作者：胡文才杨帅陈祖明乐山职业技术学院旅游系四川乐山614000 四川旅游学院烹饪学院四川成都610100

本文选取乌鸡蛋黄作为试验对象,通过调整微波炉不同加热模式和加热时间,分析了微波烹调方式对乌鸡蛋黄脂质影响,研究其相关变化规律。研究结果表明,在高火、高中火和中火三种加热模式不同加热时间条件下,乌鸡蛋黄中总脂质含量呈现先增... 详细信息

本文选取乌鸡蛋黄作为试验对象,通过调整微波炉不同加热模式和加热时间,分析了微波烹调方式对乌鸡蛋黄脂质影响,研究其相关变化规律。研究结果表明,在高火、高中火和中火三种加热模式不同加热时间条件下,乌鸡蛋黄中总脂质含量呈现先增加后降低的变化规律;甘油三酯(TG)和游离脂肪酸等主要脂质成分的含量呈升高趋势,而磷脂(PL)含量则呈先升高后降低的变化规律;磷脂组分中的磷脂酰胆碱(PC)、磷脂酰乙醇胺(PE)、磷脂酸(PA)、磷脂酰己醇(PI)、磷脂酰丝氨酸(PS)、溶血卵磷脂(LPC)、磷脂酰甘油(PG)和溶血磷脂酰乙醇胺(LPE)的峰面积变化规律基本一致,均呈现先高后低的变化特征。在不同加热场景下,乌鸡蛋黄脂肪酸C16:0、C18:0、C20:0、C24:0和SFA等组分变化规律基本一致。其中,乌鸡蛋黄脂肪酸组分C16:0、C20:0和SFA的含量变化总体呈上升趋势,增幅分别为2.2%、14.77%和17.65%,乌鸡蛋黄脂肪酸组分C18:0、C24:0含量变化总体呈先升后降的特征,C18:0较对照样本先增加至90.16%,后降低为66.80%,C24:0较对照样本先增加至27.61%,后降低为27.33%。在高火、高中火和中火三个保温点下,乌鸡蛋黄脂质营养成分保留率相差范围约为5%~10%。通过本文相关内容的分析研究,以科学合理地使用微波炉加热食品,尽可能多地保留乌鸡蛋营养物质。

关键词：微波烹调乌鸡蛋黄脂质变化规律影响分析

Grain yield and N uptake of maize in response to increased plant density under reduced water and nitrogen supply conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第1期23卷 122-140页

作者： Jingui Wei Qiang Chai wen Yin Hong Fan Yao Guo Falong hu Zhilong Fan QimingWang State Key Laboratory of Aridland Crop Science Lanzhou 730070China College of Agronomy Gansu Agricultural UniversityLanzhou 730070China College of Life Sciences Northwest Normal UniversityLanzhou 730070China

The development of modern agriculture requires the reduction of water and chemical N fertilizer *** the planting density can maintain higher yields,but also consumes more of these restrictive ***,whether an increased maize density can compensate for the negative effects of reduced water and N supply on grain yield and N uptake in the arid irrigated areas remains *** study is part of a long-term positioning trial that started in 2016.A split-split plot field experiment of maize was implemented in the arid irrigated area of northwestern China in 2020 to *** treatments included two irrigation levels:local conventional irrigation reduced by 20%(W1,3,240 m^(3)ha^(-1))and local conventional irrigation(W2,4,050 m^(3)ha^(-1));two N application rates:local conventional N reduced by 25%(N1,270 kg ha^(-1))and local conventional N(360 kg ha^(-1));and three planting densities:local conventional density(D1,75,000 plants ha^(-1)),density increased by 30%(D2,97,500 plants ha-1),and density increased by 60%(D3,120,000 plants ha^(-1)).Our results showed that the grain yield and aboveground N accumulation of maize were lower under the reduced water and N inputs,but increasing the maize density by 30% can compensate for the reductions of grain yield and aboveground N accumulation caused by the reduced water and N *** water was reduced while the N application rate remained unchanged,increasing the planting density by 30% enhanced grain yield by 13.9% and aboveground N accumulation by 15.3%.Under reduced water and N inputs,increasing the maize density by 30% enhanced N uptake efficiency and N partial factor productivity,and it also compensated for the N harvest index and N metabolic related enzyme *** with W2N2D1,the N uptake efficiency and N partial factor productivity increased by 28.6 and 17.6%under W1N1D2.W1N2D2 had 8.4% higher N uptake efficiency and 13.9% higher N partial factor productivity than W2N2D1.W1N2D2 improv

关键词： water and N reduction plant density maize grain yield N uptake compensation effect

Two new high-temperature molecular ferroelectrics[1,5-3.2.2-Hdabcn]X(X=ClO_(4)^(-),ReO_(4)^(-))

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第6期35卷 234-238页

作者： Keke Han wenjun Rao Xiuli You Haina Zhang Xing Ye Zhenhong Wei hu cai School of Chemistry and Chemical Engineering Nanchang UniversityNanchang 330031China Jiangxi Key laboratory of Organic Chemistry Jiangxi Science and Technology Normal UniversityNanchang 330013China

Molecular ferroelectrics have attracted much attention because of their excellent piezoelectricity,mechanical workability,and second harmonic ***,we successfully prepared two molecular ferroelectrics[1,5-3.2.2-Hdabcn]X(X=ClO_(4)^(-),1;ReO_(4)^(-),2)by reactions of a quasi-spherical amine 1,5-diazabicycle[3.2.2]nonane(1.5-3.2.2-dabcn)with HX aqueous *** 1 and 2 undergo hightemperature phase transitions at 381 K(1)and 396 K(2).Before and after the phase transition,they crystallize in the polar point group mm2,and the centrosymmetric point groups mmm and 4/mmm,*** to Aizu rules,these two compounds experience mmm Fmm2 and 4/mmm Fmm2 type ferroelectric phase transitions,*** ferroelectricity of both compounds is well expressed in their polycrystalline film at room temperature with low coercive voltages of 13 V for 1 and 25 V for *** piezoelectric force microscopy(PFM),the 180°anti-parallel ferroelectric domains and the reversible polarization switching can be clearly observed in 1 and *** high-temperature molecular ferroelectric material has great application potential in flexible materials,biomechanics,intelligent wearables and other fields.

关键词： Ferroelectric domains Quasi-spherical amine Phase transition Polarization

Performance enhancement and active sites identification of Cu-Cd bimetallic oxide derived catalysts for electrochemical CO_(2) reduction

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第4期91卷 50-58页

作者： cai Wang Xin hu Bairong Chen Houan Ren Xiaoyu Wang Yilin Zhang Xinyu Chen Yuping Liu Qingxin Guan Wei Li State Key Laboratory of Elemento-Organic Chemistry Key Laboratory of Adv.Energy Mater.Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China

The development of earth-abundant electrocatalysts with high performance for electrochemical CO_(2)reduction(ECR)is of great ***-based catalysts have been widely investigated for ECR due to their unique ability to generate various carbonaceous products,but directing selectivity toward one certain product and identifying the real active sites during ECR are still full of ***,after the incorporation of CdO into CuO,the Cu_(0.5)Cd_(0.5)-O catalyst achieves a 10.3-fold enhancement for CO selectivity in comparison with CuO,and a CO faradic efficiency nearly 90%with a current density around20 mA cm^(-2)could maintain at least 60 ***,a wide CO/H_(2)ratio(0.07-10)is reached on Cu_(x)Cd_(1-x)-O catalysts by varying the Cu/Cd ratio,demonstrating the potential of syngas production using such *** results of ex situ XRD,XPS,and in situ Raman reveal that the real active sites of Cu_(0.5)Cd_(0.5)-O catalysts for CO production during ECR reaction are the reconstructed mixed phases of CuCd alloy and CdCO_(3).In situ FTIR and theoretical calculations further implicate the presence of Cd related species promotes the CO desorption and inhibits the H_(2)evolution,thus leading to an enhanced CO generation.

关键词： CO_(2)reduction Cu-Cd bimetallic Real active sites CO production

Virtual Coupling Trains Based on Multi-agent System Under Communication Delay

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2024年

作者： Guodong QIN Xiangxi MENG Tao wen Baigen cai School of Automation and Intelligence Beijing Jiaotong University The Institute of System Research China Industrial Control Systems Cyber Emergency Response Team

With the rapid development of railway transportation, virtual coupling(VC) has become a popular research topic. VC can greatly reduce tracking distance and increase the line capacity. Under VC control, the train formation control not only considers the behavior and speed adjustment strategy of the leader train but also the communication delays between trains. The quality of data communication between trains is an important aspect of train tracking control. We consider a virtually coupled train set(VCTS) as a multi-agent system. The Luenberger observer is introduced to estimate the real-time state of the train, based on the estimation, the train control consistency protocol is designed to account for communication delays. The stability of the error system is proven by constructing a Lyapunov function. The consistency of the coordinated train control is verified through simulation.

关键词：