检索结果-南通市图书馆

Direct measurement of the break-out ^(19)F(p,γ)^(20)Ne reaction in the China Jinping underground laboratory(CJPL)

Nuclear Science and Techniques 2024年第8期35卷 142-152页

作者： Yin‑Ji Chen Hao Zhang Li‑Yong Zhang Jian‑Jun He Richard James deBoer Michael Wiescher Alexander Heger David Kahl Jun Su Daniel Odell Xin‑Yue Li Jian‑Guo Wang Long Zhang Fu‑Qiang Cao zhi‑cheng Zhang Xin‑zhi Jiang Luo‑Huan Wang Zi‑Ming Li Lu‑Yang Song Liang‑Ting Sun Qi Wu Jia‑Qing Li Bao‑Qun Cui Li‑Hua Chen Rui‑Gang Ma Er‑Tao Li Gang Lian Yao‑De Sheng zhi‑Hong Li Bing Guo Wei‑Ping Liu Key Laboratory of Beam Technology of the Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Department of Physics and Astronomy The Joint Institute for Nuclear AstrophysicsUniversity of Notre DameNotre DameIN 46556USA School of Physics and Astronomy Monash UniversityClaytonVIC 3800Australia Facility for Rare Isotope Beams Michigan State UniversityEast LansingMI 48824USA Institute of Nuclear and Particle Physics and Department of Physics and Astronomy Ohio UniversityAthensOH 45701USA Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China China Institute of Atomic Energy Beijing 102413China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China College of Science Southern University of Science and TechnologyShenzhen 518055China Institute of Radiation Technology Beijing Academy of Science and TechnologyBeijing 100875China Key Laboratory of Nuclear Physics and Ion‑Beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China School of Mathematics and Physics Handan UniversityHandan 056005China

Calcium production and the stellar evolution of first-generation stars remain fascinating mysteries in *** one possible nucleosynthesis scenario,break-out from the hot carbon–nitrogen–oxygen(HCNO)cycle was thought to be the source of the calcium observed in these oldest ***,according to the stellar modeling,a nearly tenfold increase in the thermonuclear rate ratio of the break-out ^(19)F(p,γ)^(20) Ne reaction with respect to the competing ^(19)F(p,α)^(16) O back-processing reaction is required to reproduce the observed calcium *** performed a direct measurement of this break-out reaction at the China Jinping underground *** measurement was performed down to the low-energy limit of E_(c.m.)=186 keV in the center-of-mass *** key resonance was observed at 225.2 keV for the first *** a temperature of approximately 0.1 GK,this new resonance enhanced the thermonuclear ^(19)F(p,γ)^(20) Ne rate by up to a factor of≈7.4,compared with the previously recommended NACRE *** is of particular interest to the study of the evolution of the first stars and implies a stronger breakdown in their“warm”CNO cycle through the ^(19)F(p,γ)^(20) Ne reaction than previously *** break-out resulted in the production of the calcium observed in the oldest stars,enhancing our understanding of the evolution of the first stars.

关键词： Nuclear astrophysics First stars Abundance of calcium Reaction cross section Reaction rate China Jinping underground laboratory(CJPL) JUNA

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

Growth hormone improves insulin resistance in visceral adipose tissue after duodenal-jejunal bypass by regulating adiponectin secretion

引用

World Journal of Diabetes 2024年第6期15卷 1340-1352页

作者： Zi-Tian Liu Guang-Wei Yang Xiang Zhao Shuo-Hui Dong Yang Jiao Zheng Ge Ao Yu Xi-Qiang Zhang Xin-Zhen Xu zhi-Qiang cheng Xiang Zhang Ke-Xin Wang Department of General Surgery Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina Department of General Surgery Shandong University of Qilu Hospital(Qingdao)Qingdao 266000Shandong ProvinceChina

BACKGROUND The mechanism of improvement of type 2 diabetes after duodenal-jejunal bypass(DJB)surgery is not *** To study the morphological and functional changes in adipose tissue after DJB and explore the potential mechanisms contributing to postoperative insulin sensitivity improvement of adipose tissue in a diabetic male rat *** DJB and sham surgery was performed in a-high-fat-diet/streptozotocin-induced diabetic rat *** adipose tissue was weighed and observed under *** inguinal fat to represent subcutaneous adipose tissue(SAT)and mesangial fat to represent visceral adipose ***-sequencing was utilized to evaluate gene expression alterations *** hematoxylin and eosin staining,reverse transcription-quantitative polymerase chain reaction,western blot,and enzyme-linked immunosorbent assay were used to study the *** resistance was evaluated by *** After DJB,whole body blood glucose metabolism and insulin sensitivity in adipose tissue *** cell volume in both visceral adipose tissue(VAT)and SAT *** to SAT,VAT showed more significantly functional alterations after DJB and KEGG analysis indicated growth hormone(GH)pathway and downstream adiponectin secretion were involved in metabolic *** circulating GH and adiponectin levels and GH receptor and adiponectin levels in VAT *** experiment showed that GH stimulated adiponectin secretion and improve insulin *** GH improves insulin resistance in VAT in male diabetic rats after receiving DJB,possibly by increasing adiponectin secretion.

关键词： Growth hormone Insulin resistance Bariatric surgery Adipose tissue Adiponectin

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

Risk Factors and Predictive Nomogram for Survival in Elderly Patients with Brain Glioma

引用

当代医学科学（英文） 2024年第4期44卷 759-770页

作者： zhi-cheng FAN Wen-jian ZHAO Yang JIAO Shao-chun GUO Yun-peng KOU Min CHAO Na WANG Chen-chen ZHOU Yuan WANG Jing-hui LIU Yu-long ZHAI Pei-gang JI Chao FAN Liang WANG Department of Neurosurgery Tangdu HospitalFourth Military Medical UniversityXi'an 710038China Department of Neurosurgery Tangdu HospitalFourth Military Medical UniversityXi'an 710038China Department of Neurosurgery Shannxi University of Chinese MedineXianyang 712046China Department of Neurosurgery Tangdu HospitalFourth Military Medical UniversityXi'an 710038China Department of Neurosurgery Xi'an Medical UniversityXi'an 710021China

Objective:To determine the factors that contribute to the survival of elderly individuals diagnosed with brain glioma and develop a prognostic ***:Data from elderly individuals(age ≥65 years)histologically diagnosed with brain glioma were sourced from the Surveillance,Epidemiology,and End Results(SEER)*** dataset was randomly divided into a training cohort and an internal validation cohort at a 6:4 ***,data obtained from Tangdu Hospital constituted an external validation cohort for the *** identification of independent prognostic factors was achieved through the least absolute shrinkage and selection operator(LASSO)and multivariate Cox regression analysis,enabling the construction of a *** performance was evaluated using C-index,ROC curves,calibration plot and decision curve analysis(DCA).Results:A cohort of 20 483 elderly glioma patients was selected from the SEER *** prognostic factors(age,marital status,histological type,stage,and treatment)were found to significantly impact overall survival(OS)and cancer-specific survival(CSS),with tumor location emerging as a sixth variable independently linked to ***,nomogram models were developed to predict the probabilities of survival at 6,12,and 24 *** assessment findings from the validation queue indicate a that the model exhibited strong ***:Our nomograms serve as valuable prognostic tools for assessing the survival probability of elderly glioma *** can potentially assist in risk stratification and clinical decision-making.

关键词： Surveillance, Epidemiology, and End Results (SEER) elderly brain glioma nomogram prediction model prognosis

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

Manipulating the Spatial Structure of Second-Order Quantum Coherence Using Entangled Photons

引用

Chinese Physics Letters 2024年第7期41卷 58-73页

作者：黄双印高菁任志成程子默朱文正薛舒天娄严超刘志峰陈超朱飞杨立平汪喜林王慧田 National Laboratory of Solid State Microstructures and School of Physics Nanjing UniversityNanjing 210093China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China Intelligent Scientific Systems Co.Limited Beijing 102208China Center for Quantum Sciences and School of Physics Northeast Normal UniversityChangchun 130024China Hefei National Laboratory Hefei 230088China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

High-order quantum coherence reveals the statistical correlation of quantum particles. Manipulation of quantum coherence of light in the temporal domain enables the production of the single-photon source, which has become one of the most important quantum resources. High-order quantum coherence in the spatial domain plays a crucial role in a variety of applications, such as quantum imaging, holography, and microscopy. However, the active control of second-order spatial quantum coherence remains a challenging task. Here we predict theoretically and demonstrate experimentally the first active manipulation of second-order spatial quantum coherence,which exhibits the capability of switching between bunching and anti-bunching, by mapping the entanglement of spatially structured photons. We also show that signal processing based on quantum coherence exhibits robust resistance to intensity disturbance. Our findings not only enhance existing applications but also pave the way for broader utilization of higher-order spatial quantum coherence.

关键词： particles quantum spatially

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

近代日本对中国茶业市场的侵夺及其影响

引用

中南民族大学学报（人文社会科学版） 2024年第4期44卷 61-68,219页

作者：郝祥满周承智湖北大学历史文化学院湖北武汉430062

19世纪中期以来,因国际间茶叶生产地、消费市场和运输方式的巨变,中国茶叶输出境外的古老茶道出现了改道和分流。日本作为世界新兴茶叶供给国,加紧参与国际茶叶生产和运输等市场份额的争夺中,以中国为主要对手,以中国国内国际销售运输... 详细信息

19世纪中期以来,因国际间茶叶生产地、消费市场和运输方式的巨变,中国茶叶输出境外的古老茶道出现了改道和分流。日本作为世界新兴茶叶供给国,加紧参与国际茶叶生产和运输等市场份额的争夺中,以中国为主要对手,以中国国内国际销售运输市场为目标。日本通过收集中国茶叶产销市场的情报,有针对性地抢占长江水道及其支流航线的运销市场份额,并与中俄争夺“万里茶道”陆上运输市场。日俄等列强对中国茶叶市场的争夺,导致中国茶叶逐步退出海外市场,致使中国茶业及相关产业衰落。

关键词：中国日本茶业竞争茶路改道万里茶道

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

社区嵌入式养老机构发展路径探析——基于“场域-行动”分析视角

引用

湘潭大学学报（哲学社会科学版） 2024年第2期48卷 41-45,94页

作者：卢婷成志刚湖南女子学院社会发展学院湖南长沙410004 湘潭大学公共管理学院湖南湘潭411105

养老机构嵌入社区是推动专业机构向社区延伸,整合社区存量资源,健全社区养老服务供给网络的有效途径。从“场域-行动”分析视角对社区嵌入式养老机构的发展路径展开考察,发现在养老机构嵌入发展的过程中,社区中的“地理场域”“科层场... 详细信息

养老机构嵌入社区是推动专业机构向社区延伸,整合社区存量资源,健全社区养老服务供给网络的有效途径。从“场域-行动”分析视角对社区嵌入式养老机构的发展路径展开考察,发现在养老机构嵌入发展的过程中,社区中的“地理场域”“科层场域”“文化场域”“服务场域”“对象场域”共同构成了养老机构嵌入社区的多维“场域”要素。依据不同场域的特性和规约,养老机构采取了场景式嵌入、自主式嵌入、建构式嵌入、协同化嵌入和精准化嵌入的行动策略,映射出政府、社区、机构、居民之间良性互动和合作共治的可行性。

关键词：场域-行动社区养老服务社区嵌入式养老机构

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

惯容-负刚度-阻尼伸臂体系减震性能增效研究

引用

振动工程学报 2024年第2期37卷 297-305页

作者：汪志昊周宇翔张静雯程志鹏华北水利水电大学土木与交通学院河南郑州450045 河南省结构振动控制与健康监测工程技术研究中心河南郑州450045

为提升传统阻尼伸臂(CDO)体系的减震效果,基于惯容⁃刚度⁃阻尼三元被动减振理论,开展了惯容⁃负刚度⁃阻尼伸臂(INSDO)体系减震性能增效研究。采用Clough⁃Penzien谱模型模拟平稳随机激励,利用增广状态空间建立结构⁃阻尼器⁃激励系统的运动方... 详细信息

为提升传统阻尼伸臂(CDO)体系的减震效果,基于惯容⁃刚度⁃阻尼三元被动减振理论,开展了惯容⁃负刚度⁃阻尼伸臂(INSDO)体系减震性能增效研究。采用Clough⁃Penzien谱模型模拟平稳随机激励,利用增广状态空间建立结构⁃阻尼器⁃激励系统的运动方程;通过求解Lyapunov方程获得随机地震作用下结构响应的均方根值(RMS),基于结构最大有害层间位移角与加速度的多目标控制确定了INSDO体系的最优参数;分析评估了典型实际地震作用下INSDO体系的减震性能。结果表明:在El⁃Centro和Kobe地震波作用下,相比CDO体系,INSDO最优化体系降低了底层位移角RMS均值的57.97%,以及顶层绝对加速度RMS均值的36.99%,验证了多目标优化方法的有效性;相比单独引入惯容或负刚度单元,同时引入两种单元可进一步放大阻尼单元的位移,提升阻尼器耗能与地震输入能量的比值,实现INSDO体系减震性能增效。

关键词：高层建筑阻尼伸臂惯容负刚度减震性能

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Measurement of atmospheric non-reciprocity effects for satellite-based two-way time-frequency transfer

引用

Photonics Research 2024年第6期12卷 1274-1282页

作者： TING ZENG QI SHEN YUAN CAO JIAN-YU GUAN MENG-ZHE LIAN JIN-JIAN HAN LEI HOU JIAN LU XIN-XIN PENG MIN LI WEI-YUE LIU JIN-CAI WU YONG WANG JUAN YIN JI-GANG REN HAI-FENG JIANG QIANG ZHANG cheng-zhi PENG JIAN-WEI PAN Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences University of Science and Technology of ChinaHefei 230026China Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaShanghai 201315China Hefei National Laboratory University of Science and Technology of ChinaHefei 230094China Faculty of Information Science and Engineering Ningbo UniversityNingbo 315211China Key Laboratory of Space Active Opto-Electronic Technology Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China

Future optical clock networks will require high-precision optical time-frequency transfer between satellites and ground ***,due to atmospheric turbulence,satellite motion and time delay between the satellite–ground transmission links will cause spatial and temporal variations,respectively,resulting in the breakdown of the time-of-flight reciprocity on which optical two-way time-frequency transfer is ***,we experimentally simulate the atmospheric effects by two-way spatio-temporally separated links between two stationary terminals located 113 km apart and measure the effects for optical two-way time-frequency *** experiment shows that the effect on the link instability is less than 2.3×10^(−19) at 10,000 *** indicates that when the link instability of satellite-ground optical time-frequency transfer is on the order of 10^(−19),it is not necessary to consider the atmospheric non-reciprocity effects.

关键词： breakdown transfer satellite

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

部分状态可见的隐马尔可夫模型的Viterbi算法

引用

数学学报（中文版） 2024年第3期67卷 500-510页

作者：宋延红王志成中南财经政法大学统计与数学学院武汉430073

本文研究了隐马尔可夫模型的Viterbi算法,在已知隐马尔可夫模型的部分状态、初始概率分布、状态转移概率矩阵和观测概率矩阵的条件下,由此Viterbi算法给出最优状态序列的估计.相对于已有的算法,本文的算法考虑了部分可见状态对初始条件... 详细信息

本文研究了隐马尔可夫模型的Viterbi算法,在已知隐马尔可夫模型的部分状态、初始概率分布、状态转移概率矩阵和观测概率矩阵的条件下,由此Viterbi算法给出最优状态序列的估计.相对于已有的算法,本文的算法考虑了部分可见状态对初始条件和递推公式的影响,并且本文的算法能保证预测的状态序列是整体最优的.最后,我们将本文的算法应用于故障识别,从而验证所设计算法的可行性.

关键词：部分状态可见隐马尔可夫模型 Viterbi算法

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

Review of advanced oxidation processes for treating hospital sewage to achieve decontamination and disinfection

引用

Chinese Chemical Letters 2024年第1期35卷 140-152页

作者： Si-Ying Yu zhi-Hui Xie Xiaoyu Wu Yun-Zhe Zheng Yang Shi Zhao-Kun Xiong Peng Zhou Yang Liu Chuan-Shu He zhi-cheng Pan Kai-Jun Wang Bo Lai State Key Laboratory of Hydraulics and Mountain River Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Sino-German Centre for Water and Health Research Sichuan UniversityChengdu 610065China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province Haitian Water GroupChengdu 610041China

Hospital sewage contains various harmful pharmaceutical contaminants(e.g.,antibiotics,anti-inflammatory agents,and painkillers)and pathogens(e.g.,bacteria,viruses,and parasites),whose direct discharge into the environment will induce diseases and pose a powerful threat to human health and safety,and environmental *** recent years,advanced oxidation processes(AOPs),particularly photocatalysis,electrocatalysis,and ozone catalysis have been developed as widespread and effective techniques for hospital sewage ***,there is a lack of systematic comparison and review of the prior studies on hospital sewage treatment using AOPs *** review elaborates on the mechanisms,removal efficiencies,and advantages/disadvantages of these AOPs systems for hospital wastewater decontamination and ***,some novel and potential technologies such as photo-electrocatalysis,electro-peroxone,Fenton/Fenton-like,and piezoelectric catalysis are also included and ***,we further summarize and compare the capacity of these AOPs to treat the actual hospital wastewater under the impact of the water matrix and pH,and estimate the economic cost of these technologies for practical ***,the future development directions of AOPs for hospital wastewater decontamination and disinfection have been ***,this study provides a comparison and overview of these AOP systems in an attempt to raise extensive concerns about hospital wastewater decontamination and disinfection technologies and guide researchers to discover the future directions of technologies optimization,which would be a crucial step forward in the field of hospital sewage treatment.

关键词： Hospital sewage treatment Advanced oxidation processes Pharmaceutical contaminants Disinfection Decontamination

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

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：