检索结果-南通市图书馆

In situ measurement of environmental γ radiation dose rates of key nuclides for large radioactive surface sources

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

Nuclear Science and Techniques 2025年第1期36卷 69-79页

作者： Ze-qian wu Jian Sun Wei-Qi Huang Bai-Rong Wang Jin-Xing Cheng Jiang-Feng wu Yong-Hong Wang Biao Yuan Sheng Qi Kun Shan Institute of NBC Defence Beijing 102205China Beijing New-High Technology Academy Beijing 100094China

To monitor nuclear and radiation emergencies,it is crucial to obtain accurate in situ measurements of the environmentalγ radiation dose rate from key radionuclides,particularly for large radioactive surface *** methods currently used for measuring dose rates are inadequate for obtaining the dose rates of key radionuclides and have large angular response errors when monitoring surface *** address this practical problem,this study proposes three methods for measuring the dose rate:the weighted peak total ratio,mean value regression,and numerical integration *** methods are based on energy-spectrum measurement data,and they were theoretically derived and numerically ***,a 1-m-long hexagonal radioactive surface source was integrated into a larger surface *** situ measurement experiments were conducted on a large radioactive surface source using a dose-rate meter and a portable HPGespectrometer to analyze the errors of the three aforementioned methods and verify their validity.

关键词： Environmentalγradiation dose rate HPGespectrometer Key radionuclides Radioactive surface source

Potential role of coagulation markers in early detection of bone metastasis in gastric cancer:A critical review

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2025年第3期17卷 461-463页

作者： Qing-Nan Lin qian wu Chong Lv Jun Tang Ling-Yun Zhao Ke-Yang Xu School of Clinical Medicine Zhejiang Chinese Medical UniversityHangzhou 310053Zhejiang ProvinceChina Department of Orthopedics Wuyi County Traditional Chinese Medicine HospitalJinhua 321200Zhejiang ProvinceChina Operating Room Wuyi County Traditional Chinese Medicine HospitalJinhua 321200Zhejiang ProvinceChina Faculty of Chinese Medicine and State Key Laboratory of Quality Research in Chinese MedicineMacao University of Science and TechnologyMacao 999078China Center for Cancer and Inflammation Research School of Chinese MedicineHong Kong Baptist UniversityHong Kong 999077China

This letter to the editor involves the article published in the World Journal of Gastrointestinal *** metastasis(BM)in gastric cancer(GC)is uncommon but can be prevalent in autopsy *** significantly impairs quality of life and is frequently underdiagnosed,as sensitive diagnostic tests are only performed after symptoms *** is crucial for the diagnosis of BM but is not routinely used for screening and is *** laboratory risk factors for BM in GC patients using multivariate analysis could be a more effective approach.

关键词： Gastric cancer Bone metastasis Coagulation markers Prothrombin time Activated partial thromboplastin time Fibrin degradation products Diagnostic indicators Oncology

An insect cell-derived extracellular vesicle-based gB vaccine elicits robust adaptive immune responses against Epstein-Barr virus

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

Science China Life Sciences 2025年第3期 734-745页

作者： qian wu Kaiyun Chen Wenhui Xue Guosong Wang Yanbo Yang Shaowei Li Ningshao Xia Yixin Chen State Key Laboratory of Vaccines for Infectious Diseases National Institute of Diagnostics and Vaccine Development in Infectious Diseases Collaborative Innovation Center of Biologic Products National Innovation Platform for Industry-Education Integration in Vaccine Research School of Life Sciences School of Public Health Xiang An Biomedicine Laboratory Xiamen University

Epstein-Barr virus(EBV), the first identified human tumor virus, is implicated in various human malignancies, infectious mononucleosis,and more recently, multiple sclerosis. Prophylactic vaccines have the potential to effectively prevent EBV infection. Glycoprotein B(gB)serves as the fusogen and plays a pivotal role in the virus entry process, making it a critical target for EBV vaccine development. Surface membrane proteins of enveloped viruses serve as native conformational antigens, making them susceptible to immune recognition. Utilizing lipid membrane-bound viral antigens is a promising strategy for effective vaccine presentation in this context. In this study, we employed a truncated design for gB proteins, observing that these truncated gB proteins prompted a substantial release of extracellular vesicles(EVs) in insect cells. We verified that EVs exhibited abundant gB proteins, displaying the typical virus particle morphology and extracellular vesicle characteristics. gB EVs demonstrated a more efficient humoral and cellular immune response compared with the gB ectodomain trimer vaccine in mice. Moreover, the antisera induced by the gB EVs vaccine exhibited robust antibody-dependent cytotoxicity. Consequently, gB EVs-based vaccines hold significant potential for preventing EBV infection and offer valuable insights for vaccine design.

关键词：

同方期刊数据库

Optimization of lithium extraction solar pond in Zabuye Salt Lake: Theoretical calculation combined with field experiments

在线全文

学校读者我要写书评

暂无评论

China Geology 2025年第1期8卷 26-38页

作者： Tao Ding Zhen Nie qian wu Jiang-jiang Yu Ling-zhong Bu Yun-sheng Wang En-yuan Xing Mian-ping Zheng Yu-bin Li MNR Key Laboratory of Saline Lake Resources and Environments Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China College of Engineering Tibet UniversityLhasa 850000China

This research optimized the structure of lithium extraction solar ponds to enhance the crystallization rate and yield of Li_(2)CO_(3).Using the response surface methodology in Design-Expert 10.0.3,the authors conducted experiments to investigate the influence of four factors related to solar pond structure on the crystallization of Li_(2)CO_(3) and their pairwise *** Fluid Dynamics(CFD)simulations of the flow field within the solar pond were performed using COMSOL Multiphysics software to compare temperature distributions before and after *** results indicate that the optimal structure for lithium extraction from the Zabuye Salt Lake solar ponds includes UCZ(Upper Convective Zone)thickness of 53.63 cm,an LCZ(Lower Convective Zone)direct heating temperature of 57.39℃,a CO32−concentration of 32.21 g/L,and an added soda ash concentration of 6.52 g/*** this optimized pathway,the Li_(2)CO_(3) precipitation increased by 7.34% compared to the initial solar pond process,with a 33.33% improvement in lithium carbonate crystallization *** study demonstrates the feasibility of optimizing lithium extraction solar pond structures,offering a new approach for constructing such ponds in salt *** provides valuable guidance for the efficient extraction of lithium resources from carbonate-type salt lake brines.

关键词： Salt lake Solar pond Lithium extraction Crystallization rate Box-Behnken Computational fluid dynamics Response surface Zabuye salt lake Mineral exploration engineering

High-resolution Simulation Dataset of Hourly PM_(2.5)Chemical Composition in China(CAQRA-aerosol)from 2013 to 2020

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2025年第4期42卷 697-712页

作者： Lei KONG Xiao TANG Jiang ZHU Zifa WANG Bing LIU Yuanyuan ZHU Lili ZHU Duohong CHEN Ke HU Huangjian wu qian wu Jin SHEN Yele SUN Zirui LIU Jinyuan XIN Dongsheng JI Mei ZHENG Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China China National Environmental Monitoring Centre Beijing 100012China Guangdong Ecological Environment Monitoring Centre Guangzhou 510308China wuhan Environmental Monitoring Centre Hubei 430015China Hubei Province Academy of Eco-environmental Sciences Hubei 430072China Peking University Beijing 100871China

Scientific knowledge on the chemical compositions of fine particulate matter(PM_(2.5)) is essential for properly assessing its health and climate effects,and for decisionmakers to develop efficient mitigation strategies.A high-resolution PM_(2.5) chemical composition dataset(CAQRA-aerosol)is developed in this study,which provides hourly maps of organic carbon,black carbon,ammonium,nitrate,and sulfate in China from 2013 to 2020 with a horizontal resolution of 15 *** paper describes the method,access,and validation results of this *** shows that CAQRA-aerosol has good consistency with observations and achieves higher or comparable accuracy with previous PM_(2.5) composition *** on CAQRA-aerosol,spatiotemporal changes of different PM_(2.5) compositions were investigated from a national viewpoint,which emphasizes different changes of nitrate from other *** estimated annual rate of population-weighted concentrations of nitrate is 0.23μg m^(−3)yr^(−1) from 2015 to 2020,compared with−0.19 to−1.1μg m^(−3)yr^(−1) for other *** whole dataset is freely available from the China Air Pollution Data Center(https://***/10.12423/capdb_***).

关键词： PM_(2.5)composition dataset black carbon organic carbon ammonium nitrate sulfate

Regulating Algorithmic Online Manipulation in the Digital Market-Responses of the EU and China

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

科技与法律(中英文) 2025年第2期 138-148页

作者： Gu Chenhao wu qian Law School Beijing Normal UniversityBeijing 100875China Center on the Rule of Law and Develop-ment Beijing Normal UniversityGuangdong Zhuhai 519087China

The original intention of the algorithmic recommender system is to grapple with the negative impacts caused by information overload,but the system also can be used as"hypernudge",a new form of online manipulation,to inten⁃tionally exploit people's cognitive and decision-making gaps to influence their decisions in practice,which is particu⁃larly detrimental to the sustainable development of the digital *** harmful algorithmic online manipula⁃tion in digital markets has become a challenging ***,both the EU and China have responded to this issue,and the differences between them are so evident that their governance measures can serve as the typical *** EU focuses on improving citizens'digital literacy and their ability to integrate into digital social life to independently ad⁃dress this issue,and expects to address harmful manipulation behavior through binding and applicable hard law,which is part of the digital *** comparison,although there exist certain legal norms that have made relevant stipula⁃tions on manipulation issues,China continues to issue specific departmental regulations to regulate algorithmic recom⁃mender services,and pays more attention to addressing collective harm caused by algorithmic online manipulation through a multiple co-governance approach led by the government or industry associations to implement supervision.

关键词： algorithm manipulation digital market the EU China

《论语》教育思想及其对新时代高职教育的启示

在线全文

学校读者我要写书评

暂无评论

成才之路 2025年第2期 53-56页

作者：吴倩江苏联合职业技术学院无锡机电分院江苏无锡214000

新时代高职教育是为社会主义现代化建设培养高素质技术技能人才的主要阵地。《论语》教育思想作为我国传统教育思想中的理论基石,对新时代高职教育具有重要的启示价值。借鉴和吸收《论语》中的教育思想,能够更好地构建中国特色职业教育... 详细信息

新时代高职教育是为社会主义现代化建设培养高素质技术技能人才的主要阵地。《论语》教育思想作为我国传统教育思想中的理论基石,对新时代高职教育具有重要的启示价值。借鉴和吸收《论语》中的教育思想,能够更好地构建中国特色职业教育的思想体系,推动高职教育的高质量发展。新时代高职教育应坚持以人为本、立德树人,提升教师的思想政治素质和职业道德水平,建立健全学生多元化、多样化发展的育人机制,有序推进“三教”改革,切实提升教育质量,为实现中华民族伟大复兴培育更多高素质的技术技能人才。

关键词：《论语》教育思想高职教育启示立德树人教师队伍多元发展 “三教”改革

基于N-K和SNA的高层住宅火灾事故风险因素分析及控制

在线全文

学校读者我要写书评

暂无评论

防灾减灾工程学报 2025年第1期45卷 128-136,178页

作者：武乾杨建宏徐树文西安建筑科技大学土木工程学院陕西西安710055

高层住宅火灾安全防控是一个复杂系统问题,从系统层面确定其风险耦合形式及关键风险因素对提升我国高层住宅消防安全水平具有重要意义。为分析高层住宅火灾事故风险因素并提出防控策略,通过收集2015~2023年我国发生的162起高层住宅火灾... 详细信息

高层住宅火灾安全防控是一个复杂系统问题,从系统层面确定其风险耦合形式及关键风险因素对提升我国高层住宅消防安全水平具有重要意义。为分析高层住宅火灾事故风险因素并提出防控策略,通过收集2015~2023年我国发生的162起高层住宅火灾较大事故案例,结合专家访谈和已有的事故致因分类模型,将高层住宅火灾事故风险因素分为5类一级风险因素和26个二级风险因素;基于N-K模型求解出风险因素耦合值,将风险耦合形式量化并进行耦合致险性评价;利用社会网络分析(Social Network Analysis,SNA)可视化风险因素间的作用关系,分析其中心度和可达性,挖掘出风险因素的发展态势和诱发其他风险因素出现的可能性;结合N-K和SNA对各风险节点的出度进行修正,确定高层住宅火灾事故的关键风险因素。结果表明:多风险因素耦合导致事故发生的概率较大;火灾事故的起因在较大程度上是居民方的原因,开发商、物业、社区、监管单位四方的风险易使灾情扩大、程度升级;防控开发商-监管单位两风险因素耦合可有效避免事故发生;开发商、社区、监管单位风险因素的出现易连通各风险节点,引发耦合效应;从开发商、物业、社区及监管单位角度出发进行防控是重点。

关键词：安全工程高层住宅火灾事故 N-K模型社会网络分析风险耦合

天然气区域生产中的关联工艺参数协同预测与预警

在线全文

学校读者我要写书评

暂无评论

科学技术与工程 2025年第2期25卷 560-566页

作者：赵勇尹爱军成浩李骞纪林呈吴倩颖中国石油天然气股份有限公司西南油气田分公司重庆气矿重庆400021 重庆大学机械与运载工程学院重庆400044 广西大学土木建筑工程学院南宁530004

为提前发现天然气区域生产过程中管线、装置可能发生的超压、泄露等异常工况,现有工业控制报警系统不能准确反映设备真实状态,而采用单参数的预警误判率较高,实用性不足。提出了一种天然气区域生产各上、下游场站关联工艺参数的协同预... 详细信息

为提前发现天然气区域生产过程中管线、装置可能发生的超压、泄露等异常工况,现有工业控制报警系统不能准确反映设备真实状态,而采用单参数的预警误判率较高,实用性不足。提出了一种天然气区域生产各上、下游场站关联工艺参数的协同预测与预警方法。针对天然气区域内场站多、生产过程复杂、监测数据多样的特点,首先对每个场站的参数进行降维,提取各场站的关键工艺参数;再对关键参数进行关联度评估及分组,以同组的高关联参数为自变量,建立多元非线性套索回归预测模型;同时,建立关键参数的长短期记忆预测模型;结合两种模型预测结果的对比分析确定动态阈值,对区域生产进行协同预警。通过重庆气矿某井区开展的有效性验证,结果表明该方法不仅能有效减少单值异常出现的预警误判,又可提前定位异常场站和异常点位,具有较高的实用价值。

关键词：天然气区域生产报警工艺参数关联度协同预警