检索结果-南通市图书馆

Plutonium utilization in a small modular molten-salt reactor based on a batch fuel reprocessing scheme

Nuclear Science and Techniques 2024年第4期35卷 15-28页

作者： Xue-Chao Zhao Rui Yan Gui-feng zhu Ya-Fen Liu Jian Guo Xiang-Zhou Cai Yang Zou Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China CAS Innovative Academies in TMSR Energy System Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

A molten salt reactor(MSR)has outstanding features considering the application of thorium fuel,inherent safety,sustainability,and resistance to ***,fissile material^(233)U is significantly rare at the current stage,thus it is difficult for MSR to achieve a pure thorium-uranium fuel ***,using plutonium or enriched uranium as the initial fuel for MSR is more *** this study,we aim to verify the feasibility of a small modular MSR that utilizes plutonium as the starting fuel(SM-MSR-Pu),and highlight its advantages and ***,the structural design and fuel management scheme of the SM-MSR-Pu were ***,the neutronic characteristics,such as the graphite-irradiation lifetime,burn-up performance,and coefficient of temperature reactivity were calculated to analyze the physical characteristics of the *** results indicate that plutonium is a feasible and advantageous starting fuel for a SM-MSR;however,there are certain shortcomings that need to be *** a 250 MWth SM-MSR-Pu,approximately 288.64 kg^(233)U of plutonium with a purity of greater than 90% is produced while 978.00 kg is burned every ten *** temperature reactivity coefficient decreases from -4.0 to -6.5 pcm K^(-1) over the 50-year operating time,which ensures a long-term safe ***,the amount of plutonium and accumulation of minor actinides(MAs)would increase as the burn-up time increases,and the annual production and purity of^(233)U will *** achieve an optimal burn-up performance,setting the entire operation time to 30 years is ***,more than 3600 kg of plutonium eventually accumulate in the *** research is required to effectively utilize this accumulated plutonium.

关键词： Molten salt fuel Plutonium utilization ^(233)U TRUs mole fraction Temperature feedback coefficient

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Detection of SARS-CoV-2 based on artificial intelligence-assisted smartphone:A review

引用

Chinese Chemical Letters 2024年第7期35卷 25-34页

作者： Yunxin Li Jinghui Zhang Jisen Chen feng zhu Zhiqiang Liu Peng Bao Wei Shen Sheng Tang School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Programme in Emerging Infectious Diseases Duke-NUS Medical SchoolSingapore 169857Singapore

In recent years,the application of smartphone in various fields has received great attention,and it has become a promising tool in virus detection,data processing and data *** the rapid spread of COVID-19 around the world,many traditional detection methods have been combined with smartphone to assist in the analysis and detection of the novel coronavirus(SARS-CoV-2),including electrochemistry,fluorescence and *** the gradual development of artificial intelligence(AI),the combination of AI and smartphone to analyze SARS-CoV-2 was also the focus of *** on the summary of the traditional methods combined with smartphone to detect SARS-CoV-2 virus,in addition to AI-based data processing,AI algorithms are also employed for SARS-CoV-2 detection *** review discussed both strategies and focused on the application of the *** combination of AI algorithm and smartphone to detect SARS-CoV-2 has high accuracy,which is more conducive to meeting the needs of portable *** addition,the classification of SARS-CoV-2 virus samples in biological fluids such as blood and saliva was also ***,this paper briefly discussed the limitations of using smartphone analysis to detect SARS-CoV-2,as well as the prospect and future development of virus *** conclusion,the detection methods based on smartphone and AI algorithms show great potential in the detection of SARS-CoV-2 and can be a valuable complement to traditional analysis methods.

关键词： COVID-19 SARS-CoV-2 virus Detection method Smartphone analysis Artificial intelligence

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Diagnosis and therapy of tacrolimus toxicity in a liver transplant recipient during COVID-19 treatment

引用

Hepatobiliary & Pancreatic Diseases International 2024年第3期23卷 326-330页

作者： feng zhu Yi-Ming Wang Ming Ni Yuan Liang Jie-Hui Huang Xue-Hao Wang feng Cheng Ling Lu Hepatobiliary Center The First Affiliated Hospital of Nanjing Medical UniversityKey Laboratory of Liver TransplantationChinese Academy of Medical SciencesNHC Key Laboratory of Liver TransplantationResearch Unit of Liver Transplantation and Transplant ImmunologyChinese Academy of Medical SciencesNanjing 210000China Department of Respiratory and Critical Care Medicine Wuxi Fifth People’s HospitalWuxi 214000China Jiangsu Key Laboratory of Cancer Biomarkers Prevention and TreatmentCollaborative Innovation Center for Cancer Personalized MedicineNanjing Medical UniversityNanjing 210000China

To the Editor:SARS-CoV-2,the pathogen responsible for the pandemic of coronavirus disease 2019(COVID-19),has had profound impacts on human health,and its antagonist Paxlovid is a commonly used treatment option[1].However,treatment selection for immunosuppressed patients,such as liver recipients,remains uncertain due to potential drug interactions and the risk of immunosuppressant dosage adjustment,which can cause liver injury[2].

关键词： dosage treatment antagonist

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

High-power compact continuous-wave Fe:ZnSe laser at 4μm with>50%overall conversion efficiency

引用

Chinese Optics Letters 2024年第8期22卷 87-92页

作者： Yanlong Shen Yingchao Wan feng zhu Tongxing Chai Yousheng Wang Ke HuangState Key Laboratory of Laser Interaction with Matter Northwest Institute of Nuclear TechnologyXi’an 710024China

We report on a compact,high-efficiency mid-infrared continuous-wave(CW)Fe:ZnSe laser pumped by a 2.9μm fiber laser under liquid nitrogen cooling.A maximum output power of 5.5 W and a slope efficiency of up to 66.3%with respect to the launched pump power were *** overall optical-to-optical(OTO)conversion efficiency,calculated from the output of the 2.9μm fiber laser to the 4μm laser,was as high as~54.5%.The OTO efficiency and the slope efficiency are,to the best of our knowledge,the highest ever reported in Fe:ZnSe lasers.A rate-equation-based numerical model of CW operation was established,and the simulation agreed well with the experiment,identifying the routes used in the experiment for such high efficiency.

关键词： Fe:ZnSe mid-infrared laser high efficiency solid-state laser

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Selective CO2 electroreduction to formate over oxide-derived In nanosheets under industrial-current-density

引用

Rare Metals 2024年第11期 6105-6112页

作者： Shan zhu Yue Zhao Tai-Yun zhu Zhi-Xin Sun feng zhu Jun Cao feng-Xiang Ma Xiao-dong Li Xiao-Jing Zhang Yong-Fu Sun State Grid Anhui Electric Power Research Institute Max Planck Institute of MIcrostructure Physics Hefei National Research Center for Physical Sciences University of Science and Technology of China

The strategy for converting CO2into high-value chemicals through electroreduction is feasible and promising;however,its selectivity and current densities are highly dependent on the selection and modulation of ***,In2O3nanosheets were successfully fabricated and then converted into oxide-derived In nanosheets under the same CO2electroreduction condition,where the in-situ X-ray diffraction and in-situ Raman results clearly revealedthe surface dynamic regulation process.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Abnormalities of electroencephalography microstates in patients with depression and their association with cognitive function

引用

World Journal of Psychiatry 2024年第1期14卷 128-140页

作者： Rui-Jie Peng Yu Fan Jin Li feng zhu Qing Tian Xiao-Bin Zhang Suzhou Medical College Soochow UniversitySuzhou 215123Jiangsu ProvinceChina Department of Psychiatry Suzhou Psychiatric HospitalThe Affiliated Guangji Hospital of Soochow UniversitySuzhou 215137Jiangsu ProvinceChina

BACKGROUND A growing number of recent studies have explored underlying activity in the brain by measuring electroencephalography(EEG)in people with ***,the consistency of findings on EEG microstates in patients with depression is poor,and few studies have reported the relationship between EEG microstates,cognitive scales,and depression severity *** To investigate the EEG microstate characteristics of patients with depression and their association with cognitive *** A total of 24 patients diagnosed with depression and 32 healthy controls were included in this study using the Structured Clinical Interview for Disease for The Diagnostic and Statistical Manual of Mental Disorders,Fifth *** collected information relating to demographic and clinical characteristics,as well as data from the Repeatable Battery for the Assessment of Neuropsychological Status(RBANS;Chinese version)and *** Compared with the controls,the duration,occurrence,and contribution of microstate C were significantly higher[depression(DEP):Duration 84.58±24.35,occurrence 3.72±0.56,contribution 30.39±8.59;CON:Duration 72.77±10.23,occurrence 3.41±0.36,contribution 24.46±4.66;Duration F=6.02,P=0.049;Occurrence F=6.19,P=0.049;Contribution F=10.82,P=0.011]while the duration,occurrence,and contribution of microstate D were significantly lower(DEP:Duration 70.00±15.92,occurrence 3.18±0.71,contribution 22.48±8.12;CON:Duration 85.46±10.23,occurrence 3.54±0.41,contribution 28.25±5.85;Duration F=19.18,P<0.001;Occurrence F=5.79,P=0.050;Contribution F=9.41,P=0.013)in patients with depression.A positive correlation was observed between the visuospatial/constructional scores of the RBANS scale and the transition probability of microstate class C to B(r=0.405,P=0.049).CONCLUSION EEG microstate,especially C and D,is a possible biomarker in *** with depression had a more frequent transition from microstate C to B,which may relate to more negative ruminati

关键词： Depression Electroencephalography Microstates Cognitive functions

来源：

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

A Comparative Study of Machine Learning Models for Traffic Accident Severity Prediction on Rural Highways

引用

Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： fengxiang Guo Jingyang Li feng zhu Bijiang Tian Wenchen Yang School of Transportation Science and Engineering， Harbin Institute of Technology Yunnan Key Laboratory of Digital Communications National Engineering Research Center for Efficient Maintenance， Safety and Durability of Roads and Bridges，Broadvision Engineering Consultants Co.， Ltd Kunming Faculty of Transportation Engineering， Kunming University of Science and Technology School of Civil and Environmental Engineering， Nanyang Technological University

The use of machine learning models for analyzing Traffic Accident Severity (TAS) is increasingly common in safety assessment and traffic accident prevention. However， many existing studies have not fully considered the importance of feature engineering， model hyperparameter optimization， and training set proportions， all of which significantly affect the performance of these models. This study addresses the research gap by developing a TAS model using the Light Gradient Boosting Machine (LightGBM) and integrating two feature engineering methods (Random Forest (RF) and Principal Component Analysis (PCA)). Additionally， we compared the LightGBM with three other machine learning models: Support Vector Machine (SVM)， Binary Logistic Regression (BL)， and Deep Neural Network (DNN). This comparison evaluates the effectiveness of different machine learning approaches in classifying TAS， taking into account variations in feature engineering techniques and training set proportions. The case study examines rural highway accidents in Yunnan Province， China， focusing on three categories of factors influencing TAS: accident characteristics， traffic flow， and highway conditions. Moreover， the SHAP (SHapley Additive exPlanations) values were employed to identify the primary factors contributing to the accident severity. The results show that with the training set size of 80%， all four models achieve the highest predictive accuracy for severe accidents. Notably， the PCA+lightGBM combination model outperforms others in overall accident prediction accuracy and has the highest recall rate and F1 score for severe accidents. Comparing the four models under different feature inputs， the impact of feature selection on model performance is less significant than reducing the data heterogeneity. LightGBM and DNN are more susceptible to data heterogeneity， and improving data homogeneity markedly boosts the model’s performance. Through SHAP analysis， it is evident that the modes of transportati

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Angular distribution of products in multinucleon transfer reactions

引用

Chinese Physics C 2024年第10期48卷 193-200页

作者： Xian-Kai Le Kuan Fan feng-zhu Xing Shu-Qing Guo Nan Wang College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Nuclear and Radiation Safety Shenzhen 518060China

A method based on the dinuclear system(DNS)is proposed to describe the angular distribution of products in multinucleon transfer(MNT)*** considering fluctuation effects,the angular distributions of reactions involving^(136)Xe+^(208)Pb,^(136)Xe+^(209)Bi,^(86)Kr+^(166)Er,^(84)Kr+^(209)Bi,and^(84)Kr+^(208)Pb are examined,demonstrating good agreement with experimental ***,the double differential cross-sections(dσ^(2)/dl_(i)dΘand dσ^(2)/dZdΘ)of reactions^(136)Xe+^(208)Pb and^(136)Xe+^(209)Bi are analyzed to explore the mechanism of angular distribution in MNT ***,the optimal angles for detecting N=126 isotopes are determined via an analysis on the influence of proton and neutron numbers of the projectiles on the angular distribution of the N=126 isotopic *** results of this study can provide valuable insights for experimental detection.

关键词： angular distribution multinucleon transfer reaction dinuclear system model neutron-rich nuclei

来源：

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

基于容性耦合的钢轨压力传感器电磁干扰分析

引用

仪器仪表学报 2024年第4期45卷 317-324页

作者：杨阳朱峰西南交通大学电气工程学院成都611756 四川建筑职业技术学院机电与信息工程系德阳618000

目前随着弱电装置在铁路通信、传感测量等方面的普及,电磁干扰问题越来越引起人们的重视,但是关于电磁干扰机理的耦合分析等方面的工作开展较少。本文针对一则典型的钢轨压力传感器电磁干扰问题,从干扰源排查入手,建立了电源线与信号线... 详细信息

目前随着弱电装置在铁路通信、传感测量等方面的普及,电磁干扰问题越来越引起人们的重视,但是关于电磁干扰机理的耦合分析等方面的工作开展较少。本文针对一则典型的钢轨压力传感器电磁干扰问题,从干扰源排查入手,建立了电源线与信号线的容性耦合物理模型,提取线缆间分布电容参数,定量分析了耦合电场大小;同时找出干扰源,确定为电源线容性耦合导致的串扰电压干扰,给出了相应抑制干扰的措施,该分析与实测相符合。研究结果表明,接地装置对电源线地线的电磁干扰影响很大,从而进一步影响了信号线的信号电压。当接地电阻的埋入深度从0.1 m增加到0.6 m时,电源线的干扰电压得到了抑制;信号线的连接端头是容易耦合到外界电磁干扰的薄弱环节,是改善屏蔽效能的关键点。本文所提出的关于容性耦合的机理分析、计算方法、以及传感器信号的电磁干扰抑制措施,能够为今后电气设备的电磁干扰分析抑制提供普遍的借鉴意义。

关键词：容性耦合电磁干扰压力传感器串扰电压

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Dual peroxisome proliferator-activated receptorα/δagonists:Hope for the treatment of alcohol-associated liver disease?

引用

World Journal of Gastroenterology 2024年第37期30卷 4163-4167页

作者： Xin-Yang Zhang Qin-Jun-Jie Chen feng zhu Min Li Dan Shang Department of Vascular Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022Hubei ProvinceChina Department of Hepatobiliary Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022Hubei ProvinceChina Department of Vascular Surgery Hubei Provincial Hospital of Traditional Chinese MedicineWuhan 430061Hubei ProvinceChina

In this letter,we review the article“Effects of elafibranor on liver fibrosis and gut barrier function in a mouse model of alcohol-associated liver disease”.We focus specifically on the detrimental effects of alcohol-associated liver disease(ALD)on human *** its insidious onset and increasing incidence,increasing awareness of ALD can contribute to reducing the prevalence of liver *** comprises a spectrum of several different disorders,including liver steatosis,steatohepatitis,fibrosis,cirrhosis,and hepatocellular *** pathogenesis of ALD is exceedingly *** studies have shown that peroxisome proliferator-activated receptors(PPARs)regulate lipid metabolism,glucose homeostasis and inflammatory responses within the ***,their dysfunction is a major contributor to the progression of *** is an oral,dual PPARαandδ*** effectiveness of elafibranor in the treatment of ALD remains *** this letter,we emphasize the harm of ALD and the burden it places on ***,we summarize the clinical management of all stages of ALD and present new insights into its pathogenesis and potential therapeutic ***,we discuss the mechanisms of action of PPARαandδagonists,the significance of their antifibrotic effects on ALD and future research directions.

关键词： Alcohol-associated liver disease Fibrosis Antifibrotic effect Elafibranor Peroxisome proliferator-activated receptor

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：