检索结果-南通市图书馆

Universal paradigm of ternary metacomposites with tunable epsilon-negative and epsilon-near-zero response for perfect electromagnetic shielding

引用

Rare Metals 2024年第2期43卷 796-809页

作者： Yun-Peng Qu Yun-Lei Zhou Yang Luo yao Liu Jun-Fei Ding Yan-Li Chen Xiu Gong Jing-Liang Yang Qiong Peng Xiao-si Qi College of Physics Guizhou UniversityGuiyang550025China Hangzhou Institute of Technology Xidian UniversityHangzhou311231China Department of Materials ETH Zurich8093ZurichSwitzerland Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinan250061China

CaCu_(3)Ti_(4)O_(12)(CCTO)ceramic nanocomposites incorporating graphene–carbon black(GRCB)fillers were fabricated by spark plasma sintering *** percolative effects of conductive GRCB fillers on dielectric response of GRCB/CCTO ternary metacomposites were systematically *** weakly real permittivity(ε′)-negative response(ε′~−1×10^(2))was achieved which originated from weakly low-frequency plasmonic state of free carriers within constructed GRCB *** enhancing three-dimensional GRCB network,the plasma frequency of metacomposites increased while the damping factor ***,theε′-negative values of metacomposites were tuned from−10^(2) to−10^(4) orders of magnitude andε′-near-zero(ENZ)frequencies from~142 to~340 MHz which substantially benefited from the moderate carrier concentration of GRCB dual *** Drude model and equivalent circuit models were adopted to demonstrate dielectric and electrical *** obtained metacomposites show strong EM shielding effect along with enhanced plasmonic oscillation and even better achieving perfect EM shielding effect in ENZ *** work achieves the tunableε′-negative andε′-near-zero response and more importantly clarifies its regulation mechanism in ceramic-based ternary metacomposites,which opens up the possibility of designing high-performance EM shielding materials based on metacomposites.

关键词： Metacomposites Ceramic matrix composites Negative permittivity Epsilon-near-zero Electromagnetic shielding

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

The emerging role of fasting-mimicking diets in cancer treatment

引用

Journal of Nutritional Oncology 2023年第2期8卷 66-70页

作者： Yu-Jia Zhai Pei-yao si Ming-Li Liu Lan Huang Translational Medicine Center the First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450018HenanChina Department of Microbiology Biochemistry&ImmunologyMorehouse School of MedicineAtlanta 30310Georgia StateUSA

Cancer is one of the most common causes of morbidity and mortality *** high demand for specific nutrients and the sensitivity to nutritional deficiencies are newly recognized features of cancer *** interventions can suppress tumor demand for particular nutrients and alter certain nutrients to target a tumor's metabolic *** fasting or fasting-mimicking diets(FMDs)are popular approaches that can reduce nutrient intake over a specific *** evidence suggests that FMDs attenuate tumor growth by altering the energy metabolism of cancer ***,FMDs potentiate the sensitivity of tumors to conventional cancer treatments and limit adverse *** findings also highlight the potential value of FMDs in boosting antitumor immune ***,clinical trials regarding the impact of FMDs on cancer patients remain limited and ***,we provide the latest information on the effects of FMDs on cancer progression and treatment,focusing on future clinical applications.

关键词： Cancer Cancer treatment Fasting Fasting-mimicking diets

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

教育实证研究的理论依据、争议与去向

引用

大学教育科学 2020年第5期 12-17页

作者：王思遥华东师范大学高等教育研究所上海200062

实证主义前后历经了经典实证主义、逻辑实证主义和后实证主义三个时期。承袭实证主义中心思想的教育实证研究则经历了纯粹追求量化、量化研究为主,以及量化、质性和混合研究并存的三个时期。现阶段,教育实证研究的内涵、学科适切性和发... 详细信息

实证主义前后历经了经典实证主义、逻辑实证主义和后实证主义三个时期。承袭实证主义中心思想的教育实证研究则经历了纯粹追求量化、量化研究为主,以及量化、质性和混合研究并存的三个时期。现阶段,教育实证研究的内涵、学科适切性和发展方向颇受争议,学界在倡导实证研究的同时,应谨慎思考教育实证研究的内涵,明晰实证研究在教育领域的可为与不可为之处,警惕“统计主义”倾向,避免走入“虚假二元论”“虚假首要性”“虚假确定性”与“虚假期望”等误区,并在尊重生命多样性、复杂性与多变性的基础上,将方法置于人的洞察力和想象力之下,以多元共生的价值取向推动教育事业的进一步发展。

关键词：研究方法教育实证研究实证主义理论依据量化研究质性研究

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

Effectiveness of cardioneuroablation in different subtypes of vasovagal syncope

引用

Journal of Geriatric Cardiology 2024年第6期21卷 651-657页

作者： Bin TU Zi-Hao LAI Ai-Yue CHEN Zhi-Yuan WENG si-Min CAI Zhu-Xin ZHANG Li-Kun ZHOU Li-Hui ZHENG Yan yao Arrhythmia Center Fuwai HospitalNational Center for Cardiovascular DiseasesNational Key LaboratoryChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Cardiac Center Beijing Chaoyang HospitalCapital Medical UniversityBeijingChina Cardiovascular Department The First Affiliated HospitalFujian Medical UniversityFujian Institute of HypertensionFujianChina Department of Cardiovascular The Second Affiliated Hospital of Zhejiang University School of MedicineZhejiangChina

BACKGROUND Cardioneuroablation(CNA)has shown encouraging results in patients with vasovagal syncope(VVS).However,data on different subtypes was *** This observational study retrospectively enrolled 141 patients[mean age:40±18 years,51 males(36.2%)]with the diagnosis of *** characteristics among different types of VVS and the outcomes after CNA were *** After a mean follow-up of 4.3±1.5 years,41 patients(29.1%)experienced syncope/pre-syncope events after ***/pre-syncope recurrence significantly differed in each subtype(P=0.04).The cardioinhibitory type of VVS had the lowest recurrence rate after the procedure(n=6,16.7%),followed by mixed(n=26,30.6%)and vasodepressive(n=9,45.0%).Additionally,a significant difference was observed in the analyses of the Kaplan-Meier survival curve(P=0.02).Syncope/pre-syncope burden was significantly reduced after CNA in the vasodepressive type(Psive types with recurrent syncope/pre-syncope after CNA have a lower baseline deceleration capacity(DC)level than those without(7.4±1.0 ms vs.9.0±1.6 ms,P=0.01).Patients with DCsiONS Different subtypes exhibit different event-free *** vasodepressive type exhibited the lowest event-free rate,but those patients with DC≥8.4 ms might benefit from CNA.

关键词： syncope subtypes diagnosis

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

本原rpp半群

引用

西安建筑科技大学学报（自然科学版） 2008年第2期40卷 293-296页

作者：马思遥任学明王艳西安建筑科技大学理学院陕西西安710055

主右投射(简称rpp)半群是一类重要的广义正则半群,首先引入了本原rpp半群的概念,借助广义Green(l)关系:L(l),R(l),H(l)及D(l),刻画了本原rpp半群的基本特征,证明了本原rpp半群中的任意非零元a,关于任意s∈S,若Ra(l)∩E(S)≠Φ且aS≠0,... 详细信息

主右投射(简称rpp)半群是一类重要的广义正则半群,首先引入了本原rpp半群的概念,借助广义Green(l)关系:L(l),R(l),H(l)及D(l),刻画了本原rpp半群的基本特征,证明了本原rpp半群中的任意非零元a,关于任意s∈S,若Ra(l)∩E(S)≠Φ且aS≠0,则as∈Ra(l)∩Ls(l).最后,得出了本原rpp半群中Hef(l)和Hfe(l)为S的不含幺元的可消子半群,Hef(l)作为右Hf(l)-系与Hf(l)的右理想同构,作为左He(l)-系与He(l)的左理想同构.

关键词： rpp半群本原rpp半群广义Green(l)关系

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

CLEFIA算法的一种新型白盒实现

引用

西安电子科技大学学报 2020年第5期47卷 150-158页

作者：姚思陈杰宫雅婷徐东西安电子科技大学综合业务网理论及关键技术国家重点实验室陕西西安710071 西安电子科技大学密码研究中心陕西西安710071 西安电子科技大学网络与信息安全学院陕西西安710071

针对苏帅等人以干扰项技术实现的白盒CLEFIA算法的不足,采用MICHIELS等人的分析方法,可以在不超过2.5×229的时间复杂度内恢复出主密钥。为保证CLEFIA算法在白盒攻击环境中安全运行,提出一种基于查找表技术的CLEFIA算法的白盒实现方案... 详细信息

针对苏帅等人以干扰项技术实现的白盒CLEFIA算法的不足,采用MICHIELS等人的分析方法,可以在不超过2.5×229的时间复杂度内恢复出主密钥。为保证CLEFIA算法在白盒攻击环境中安全运行,提出一种基于查找表技术的CLEFIA算法的白盒实现方案。该方案需占用内存空间36.034 MB,方案中两类查找表对应的白盒多样性的值分别为2829和2813,且针对仿射等价算法的时间复杂度可以达到O(276)。该方案可以有效地抵抗代码提取攻击密钥提取攻击、MICHIELS等人的攻击以及MULDER等人的攻击。

关键词：白盒攻击环境白盒实现查找表 CLEFIA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

A Stylistic Analysis of Oliver Twist—From the Perspective of Deviation

引用

海外英语 2021年第7期 213-215页

作者：常思瑶辽宁大学外国语学院

Oliver Twist is the second novel composed by Charles Dickens,a renowned British writer from the Victorian *** de⁃scribes the tearful experience of Oliver,an *** work has been analyzed from the perspective of translation versions,charac⁃ters or social background,*** various scholars,but seldom from the angle of stylistic or even *** is a visual metaphor aiming to explain a linguistic technique,and originated from painting *** thesis will decipher Oliver Twist from the aspect of deviation to get the gist of the work and savor the beauty of stylistic.

关键词： Oliver Twist deviation rhetoricdevices

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

The Violation of Poetics by Waiting for Godot—From the Perspective of the Authenticity of Poetry

引用

海外英语 2021年第4期 229-231页

作者：常思瑶辽宁大学外国语学院

Poetics by Aristotle sets the dogmas for literature,while Waiting for Godot,the representative of the Theater of the Ab⁃surd,violates the former’s principles to achieve certain *** thesis will analyze the violation from the angle of Solidity or Authenticity of art and poetry,which are the likelinessandnecessity,and *** digressing from the traditional rules,Wait⁃ing for Godot helps to create absurdity reflecting the inner loss of people after the war and to form a sense of alienation from reality.

关键词： Poetics likely necessary credibility Waiting for Godot

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

Transition metals for stabilizing lithium metal anode:advances and perspectives

引用

Tungsten 2024年第1期6卷 212-229页

作者： si-Cheng Miao Ye Jia Zhi-Wen Deng Yan Deng Ruo-Xuan Chen Xue-Mei Zhang Chang-Haoyue Xu Meng yao Wen-Long Cai Department of Advanced Energy Materials College of Materials Science and EngineeringSichuan UniversityChengdu 610064China

As the capacity of lithium-ion batteries gradually reaches its limit,the high-capacity characteristics of lithium metal batteries(LMBs)make them one of the most promising electrochemical energy storage devices ***,uncontrolled lithium dendrite growth can cause poor cell performance and severe safety issues,seriously slowing down the commercialization of *** metals(TMs)are lithiophilic materials that effectively stabilize lithium metal anode(LMA)and inhibit dendrite ***,the growth of lithium dendrites and the performance of TMs in stabilizing lithium metals are comprehensively discussed in this ***,we elucidated the formation mechanisms of lithium dendrite,and we put forward several strategies to suppress lithium dendrite formation based on the understanding of these ***,the application of TMs and their compounds to stabilize LMA and their corresponding mechanisms are comprehensively ***,further research perspectives of TMs in stabilizing LMA are emphasized in detail.

关键词： Transition metals Lithium metal batteries Lithium dendrite Solid electrolyte interphase Formation mechanism

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

Pneumatosis cystoides intestinalis associated with toxic epidermal necrolysis: A case report

引用

World Journal of Clinical Cases 2014年第9期2卷 469-473页

作者： si-Yuan yao Ryutaro Seo Tohru Nagano Kazuo Yamazaki Departments of Surgery Kobe City Medical Center General HospitalChuo-ku Kobe 650-0047 Japan Departments of Anesthesiology Kobe City Medical Center General HospitalChuo-ku Kobe 650-0047 Japan Departments of Dermatology Kobe City Medical Center General HospitalChuo-ku Kobe 650-0047 Japan

Toxic epidermal necrolysis(TEN) is a severe adverse drug reaction, which is characterized by erythema, blisters, and/or erosions of the mucous membranes and skin, but intestinal involvement is rare. In contrast, pneumatosis cystoides intestinalis(PCI) is a rare condition associated with a wide variety of underlying diseases, but to date no patient has presented with PCI associated with TEN. A 55-year-old man was admitted to intensive care unit for treatment of TEN caused by phenobarbital. On day 8 after admission, he presented with progressive abdominal distention and hypotension. Computed tomography(CT) showed gas in the superior mesenteric vein and air filled cysts in the walls of the small intestine. He was suspected of having septic shock due to PCI. As there were no indications of bowel ischemia or necrosis, the patient was managed conservatively with antibiotics and oxygen therapy. On day 10 after admission, he was weaned off catecholamines, with CT on day 11 showing complete resolution of gas in the superior mesenteric vein and air filled cysts. To our knowledge, this article describes the first patient presenting with PCI associated with TEN.

关键词： Toxic epidermal necrolysis Intestinal involvement Pneumatosis cystoids intestinalis Septic shock Conservative treatment

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：