检索结果-南通市图书馆

Epitaxial quasi-2D/3D hybrid perovskite heterojunctions for photodetector with enhanced detectivity and stability

Nano Research 2024年第7期17卷 6594-6602页

作者： Yifu Chen Lin Zhang Xinxin Peng Weiran Qin Shiqing Li Yingwei Wang Zhihui Chen Si Xiao Bin Yang Biao Liu junliang Yang han Huang Yun Lin jun He Liming Ding Yongbo Yuan Hunan Key Laboratory of Super Microstructure and Ultrafast Process School of PhysicsCentral South UniversityChangsha 410083China Hunan Key Laboratory of Nanophotonics and Devices School of PhysicsCentral South UniversityChangsha 410083China College of Materials Science and Engineering Hunan UniversityChangsha 410082China Department of Photoelectric Information School of PhysicsCentral South UniversityChangsha 410083China Center for Excellence in Nanoscience Key Laboratory of Nanosystem and Hierarchical FabricationNational Center for Nanoscience and TechnologyChinese Academy of ScienceBeijing 100190China

Although numerous metal halide perovskite materials have been investigated in the field of optoelectronic,the development of perovskite heterojunctions with exotic structures is still ***,we report the epitaxial growth of quasi-two-dimensional(Q-2D)perovskites on methylammonium lead iodide(MAPbI_(3))single crystals to form perovskite heterojunctions with interfacial *** MAPbI_(3)adjacent to epitaxial Q-2D perovskite shows blue shifted photoluminescence with shortened lifetime,which becomes significant with the reduced layer number of the Q-2D *** findings suggest the presence of an interfacial strain gradient leading to enhanced photocarrier ***,compared to the MAPbI_(3)single crystal detector,the BA_(2)MAPb_(2)I_(7)/MAPbI_(3)(BA:n-butylamine)heterojunction-based photodetector demonstrates a bandpass detecting property and exhibits 5 times enhanced external quantum efficiency and 83 times enhanced specific detectivity(D*=3.26×10^(11)Jones).Remarkably,the unencapsulated BA_(2)MAPb_(2)I_(7)/MAPbI_(3)heterojunction is stable in ambient condition for>300 *** Q-2D/3D heterojunction shows suppressed ion inter-diffusion due to the presence of Q-2D phase.

关键词： epitaxial growth interfacial strain quasi-two-dimensional/three-dimensional(Q-2D/3D)heterojunctions ion inter-diffusion

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

Bose–Einstein distribution temperature features of quasiparticles around magnetopolaron in Gaussian quantum wells of alkali halogen ions

引用

Chinese Physics B 2024年第9期33卷 521-526页

作者： Xin Zhang Sarengaowa shuang han Ran An Xin-Xue Zhang Xin-Ying Ji Hong-Xu Jiang Xin-jun Ma Pei-Fang Li Yong Sun College of Physics and Electronic Information Inner Mongolia Minzu UniversityTongliao028000China Institute of Condensed Matter Physics Inner Mongolia Minzu UniversityTongliao 028000China

We have applied strong coupling unitary transformation method combined with Bose–Einstein statistical law to investigate magnetopolaron energy level temperature effects in halogen ion crystal quantum *** obtained results showed that under magnetic field effect,magnetopolaron quasiparticle was formed through the interaction of electrons and surrounding *** the same time,magnetopolaron was influenced by phonon temperature statistical law and important energy level shifts down and binding energy *** revealed that lattice temperature and magnetic field could easily affect magnetopolaron and the above results could play key roles in exploring thermoelectric conversion and conductivity of crystal materials.

关键词： temperature effect quantum well asymmetric Gaussian potential magnetopolaron

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

考虑锚胫作用下拖曳锚在成层土中的嵌入机制

引用

岩土力学 2024年第5期45卷 1495-1504页

作者：熊树森黄蕴晗赖莹浙江大学超重力研究中心浙江杭州310058 江苏海洋大学土木与港海工程学院江苏连云港222002 浙江大学建筑工程学院浙江杭州310058

深水系泊系统及其系泊基础的开发已成为发展清洁能源“海上风电”项目的关键课题。拖曳锚由于其较大的承载力和易安装等诸多优势而具有较好的发展前景。基于极限塑性上限分析法,建立了考虑锚胫作用的拖曳锚在成层土中的嵌入轨迹、姿态... 详细信息

深水系泊系统及其系泊基础的开发已成为发展清洁能源“海上风电”项目的关键课题。拖曳锚由于其较大的承载力和易安装等诸多优势而具有较好的发展前景。基于极限塑性上限分析法,建立了考虑锚胫作用的拖曳锚在成层土中的嵌入轨迹、姿态以及承载力预测模型。利用已有模型试验对本模型进行验证,结果表明:考虑锚胫作用模型轨迹预测误差控制在13.5%,轨迹和角度预测误差相比于未考虑锚胫作用的模型分别降低了78.32%和36.9%。硬土层的强度、厚度和深度共同制约着拖曳锚的嵌入能力。首先,强度比影响最明显,强度比越大,嵌入深度越小,直至无法穿透硬土层;其次,是深度影响,深度越大,承载力越大。能够穿透硬土层的条件下深度对轨迹和角度影响不明显,不能够穿透硬土层条件下深度越大,嵌入深度越大,最终角度越小;最后,是厚度影响,硬土层厚度越大,嵌入过程中承载力越大。

关键词：拖曳锚预测模型成层土锚胫作用轨迹

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

Imaging, pathology, and diagnosis of solitary fibrous tumor of the pancreas: A case report and review of literature

引用

World Journal of Clinical Cases 2024年第5期12卷 995-1003页

作者： Wen-Wen Wang shu-Ping Zhou Xiang Wu Luo-Luo Wang Yi Ruan jun Lu Hai-Li Li Xu-Ling Ni Li-Li Qiu Xin-Hua Zhou Department of Hepatobiliary and Pancreatic Surgery The Affiliated Li Huili HospitalNingbo University School of MedicineNingbo 315000Zhejiang ProvinceChina Ningbo College of Health Sciences Ningbo College of Health SciencesNingbo 315000Zhejiang ProvinceChina Health Science Center Ningbo UniversityNingbo 315000Zhejiang ProvinceChina Department of Hepatobiliary and Pancreatic Surgery The Affiliated Hangzhou First People’s HospitalZhejiang University School of MedicineHangzhou310006Zhejiang ProvinceChina Department of Diagnosis Ningbo Diagnostic Pathology CenterNingbo 315000Zhejiang ProvinceChina

BACKGROUND A solitary fibrous tumor(SFT)is often located in the pleura,while SFT of the pancreas is extremely ***,we report a case of SFT of the pancreas and discuss imaging,histopathology,and immunohistochemistry for accurate diagnosis and *** SUMMARY A 54-year-old man presented to our hospital with pancreatic occupancy for over a *** were no previous complaints of *** blood pressure was *** glucose,tumor markers,and enhanced computed tomography(CT)suggested a malignant *** the CT appearance of pancreatic cancer varies,we could not confirm the diagnosis;therefore,we performed endoscopic ultrasound-guided fine-needle biopsy(EUS-FNB).Pathology and immunohistochemistry were consistent with SFT of the *** posto-perative pathology and immunohistochemistry were consistent with the puncture *** patient presented for a follow-up examination one month after discharge with no adverse *** Other diseases must be excluded in patients with a pancreatic mass that cannot be *** and pathological histology have diagnostic value for pancreatic *** puncture biopsy under ultrasound can help diagnose pancreatic masses that cannot be diagnosed *** is an effective treatment for SFT of the pancreas;however,long-term follow-up is strongly recommended because of the possibility of malignant transformation of the tumor.

关键词： Pancreas Neoplasm fibrous tumor Endoscopic ultrasound-guided fine-needle biopsy Treatment Case report

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

Learned Distributed Query Optimizer:Architecture and Challenges

引用

ZTE Communications 2024年第2期22卷 49-54页

作者： GAO jun han Yinjun LIN Yang MIAO Hao XU Mo Peking University Beijing 100871China ZTE Corporation Shenzhen 518057China

The query processing in distributed database management systems(DBMS)faces more challenges,such as more operators,and more factors in cost models and meta-data,than that in a single-node DMBS,in which query optimization is already an NP-hard *** query optimizers(mainly in the single-node DBMS)receive attention due to its capability to capture data distributions and flexible ways to avoid hard-craft rules in refinement and adaptation to new *** this paper,we focus on extensions of learned query optimizers to distributed ***,we propose one possible but general architecture of the learned query optimizer in the distributed context and highlight differences from the learned optimizer in the single-node *** addition,we discuss the challenges and possible solutions.

关键词： distributed query processing query optimization learned query optimizer

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

Research on the Control Cover against Solenopsis invicta and Rapid Extinguishment of Its Epidemic

引用

Plant Diseases and Pests 2024年第2期15卷 1-3,8页

作者： Hongyi WANG jun HONG Haoyuan ZHU Xueying han Technical Center of Xiamen Customs Xiamen 361026China Xiamen Airport Customs Xiamen 361006China

Based on the biological characteristics of Solenopsis invicta and the structural characteristics of its ant nest,a fast and efficient closed treatment device was *** with the simple chemical treatment commonly used at present,the developed treatment device(the ant nest control cover)is a fast and efficient method to exterminate *** in 7 d,featured by short course,quick results and good effect.

关键词： Alien invasive species Solenopsis invicta Control cover Epidemic extinguishment technology

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

The effect of secondary phase on corrosion behaviors of the titanium–zirconium–molybdenum alloy

引用

Tungsten 2024年第2期6卷 342-354页

作者： Song-Wei Ge Ping Hu Jie Deng Shi-Lei Li Hai-Rui Xing Jia-Yu han Xing-Jiang Hua Li Wang jun-Zhou Yang Bo Jin Wen Zhang Kuai-She Wang School of Metallurgy Engineering Xi’an University of Architecture and TechnologyXi’an 710055China National and Local Joint Engineering Research Center for Functional Materials Processing Xi’an University of Architecture and TechnologyXi’an 710055China Western Xinxing Rare and Precious Metals Co. Ltd.Shangluo 726000China Northwest Institute for Non-Ferrous Metal Research Xi’an 710016China

As the range of applications for molybdenum and its alloys has expanded,the corrosive environment for molybdenum alloys has become more *** the past,the content of doping elements has been studied to investigate their infl uence on the corrosion performance of titanium–zirconium–molybdenum(TZM)*** this paper,it is considered that the second phase in the alloy is the main factor aff ecting the corrosion performance of TZM *** comparing the corrosion behavior of molybdenum metal and TZM alloy,the eff ect of the secondary phase on corrosion behaviors of TZM alloy has been *** results show that the second phase reduces the corrosion resistance of the TZM *** potential of the second phase is 73.7 mV higher than that of the Mo matrix,which contributes to the formation of microscopic electric *** the action of microscopic electric couples,pitting corrosion is preferentially formed at the interface between the second phase and the matrix,which accelerates the corrosion of the *** paper provides a theoretical basis for the application of TZM alloys in corrosive environments.

关键词： Secondary phase Electrochemical corrosion Titanium–zirconium–molybdenum(TZM) Galvanic corrosion Corrosion resistance

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

马克思恩格斯原创概念的发生学考察

引用

南通大学学报（社会科学版） 2024年第4期40卷 36-44页

作者：潘沁靳书君武汉轻工大学马克思主义学院江苏师范大学马克思主义学院

在发生学视域下,马克思主义哲学的诞生史,集中凝练为马克思和恩格斯完成世界观和政治立场转变之后五年中原创概念的发生过程。从1844年开始对英国古典政治经济学批判,历时三年在社会历史论域原创了本体论概念,马克思和恩格斯先后使用“... 详细信息

在发生学视域下,马克思主义哲学的诞生史,集中凝练为马克思和恩格斯完成世界观和政治立场转变之后五年中原创概念的发生过程。从1844年开始对英国古典政治经济学批判,历时三年在社会历史论域原创了本体论概念,马克思和恩格斯先后使用“物质本身预先存在的条件”“物质生活条件”“人的对象性存在”“人们的存在”等表述,以至定型为“社会存在”概念,表达全部社会生活的物质方面,并将“物质活动方式”的表述厘定为“生产方式”,指称人的生命活动方式,界定了社会存在最重要的内容。为了分析人的社会存在,他们又历时四年原创了社会分析的结构性概念。马克思把物质交往关系作为决定其他社会关系的初始关系划分出来,先后用“物质的生活关系”“交往形式/交往方式/交往关系”“生产的社会关系”等表述,直至提炼出“生产关系”概念;恩格斯则把“市民社会”比拟为“人工大厦基础”,进而表述为“交往形式的总和”,并与马克思一起提炼出“(经济)基础”概念。进而,逐步扬弃古典经济学家的劳动商品话语,历时五年初创了劳动力商品概念,展露最基本的资本主义生产关系,成为表达人的社会存在现实样态和主体本质辩证发展的旨向性概念。

关键词：原创概念社会存在生产关系劳动力商品

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

迎风格式在接触间断的数值耗散及其诱导误差

引用

国防科技大学学报 2024年第1期46卷 51-62页

作者：韩芳魏雁昕刘君大连理工大学航空航天学院辽宁大连116024

在不同流场参数条件下对三种迎风格式在接触间断中的数值耗散问题进行了数值实验,并对数值耗散产生的机理进行了分析。数值计算结果和理论分析表明,矢通量分裂格式计算接触间断问题时,若流场静止或流场内存在亚声速区域,密度耗散的产生... 详细信息

在不同流场参数条件下对三种迎风格式在接触间断中的数值耗散问题进行了数值实验,并对数值耗散产生的机理进行了分析。数值计算结果和理论分析表明,矢通量分裂格式计算接触间断问题时,若流场静止或流场内存在亚声速区域,密度耗散的产生会诱导出以特征速度运动的数值扰动误差,该误差对数值耗散的大小无影响,但会影响流场的速度及压力参数分布,从而改变流场的结构。在二维问题中,诱导误差相互干扰会产生大量的复杂小尺度结构,给流场结构分析带来困难。同时,在密度参数线性分布的流场中,若空间离散格式重构的对象为对流通量,使用矢通量分裂格式计算流场会产生数值误差,使计算精度难以到达二阶。

关键词：迎风格式有限差分格式接触间断数值耗散数值误差

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

DTD1 modulates synaptic efficacy by maintaining D-serine and D-aspartate homeostasis

引用

Science China Life Sciences 2024年

作者： Xiao Liu Chaojuan Yang Zhuoran Lin Jianing Li Bin Yin Xuepei Lei Wei han Boqin Qiang Pengcheng shu Chen Zhang Xiaozhong Peng State Key Laboratory of Common Mechanism Research for Major Diseases Department of Biochemistry & Molecular Biology Medical Primate Research Center Neuroscience Center Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic Medicine Peking Union Medical College School of Basic Medical Sciences Beijing Key Laboratory of Neural Regeneration and Repair Capital Medical University Key Laboratory of Biomechanics and Mechanobiology (Beihang University) Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Engineering Medicine Beihang University Institute of Laboratory Animal Sciences Chinese Academy of Medical Sciences & Peking Union Medical College Chinese Institute for Brain Research State Key Laboratory of Respiratory Health and Multimorbidity

D-serine and D-aspartate are involved in N-methyl-D-aspartate receptor(NMDAR)-related physiological and pathological processes. Daminoacyl-tRNA deacylase 1(DTD1) may biochemically contribute to D-serine or D-aspartate production. However, it is unclear thus far whether DTD1 regulates D-serine or D-aspartate content in neurobiological processes. In the present research, we found that DTD1 was essential to maintain the D-serine or D-aspartate homeostasis, which was consistent with the phenomenon that DTD1-deficiency resulted in changes in the quantity changes of functional NMDAR subunits in postsynaptic compartments. Moreover, DTD1 played a considerable role in regulating dendritic morphology and synaptic structure. As a consequence, DTD1 affected neurobiological events, including the synaptic strength of the CA3-to-CA1 circuit, dendritic spine density of hippocampal pyramidal neurons, and behavioral performance of mice in the Morris water maze. These findings highlight the important role of DTD1 in synaptic transmission, neuronal morphology, and spatial learning and memory and suggest an undisclosed mechanism of DTD1 that participates the regulation of D-serine or D-aspartate homeostasis in hippocampal neurons.

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

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：