检索结果-南通市图书馆

Structural and functional design of geopolymer adsorbents:a review

Tungsten 2024年第1期6卷 48-76页

作者： Hai-Ze Jin Chen-Xi Qiu yan-song li Bao liu Jun-Yi liu Qiao Chen Xue-Feng Lu Cui-Xia li Qi-Kun Wang School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals Lanzhou 730050China Shenyang Nonferrous Metals Research Institute Co. LTDShenyang 110000China Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013China School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403China

The water pollution derived from the discharge of heavy metals,antibiotics,dyes and surfactants wastewater,*** seriously affected human survival and ecological *** an efficient and low-cost physical wastewater treatment process,the adsorption is a continuous hot spot in related scientific research and *** are non-crystal or semi-crystalline materials with high-efficiency adsorption performance due to the alkali metal ions that balance the electronegative aluminosilicate skeleton can be efficiently replaced by other cations in the aqueous *** related studies of different application conditions,service objects and morphological differences of geopolymer adsorbents based on structure-function design have been in-depth exploration and *** review aims to summarize the research progres s of the structure-function design based on the geopolymerization mechanism and kinetics and service *** overview of service characteristics and progress of geopolymers in the wastewater treatment field(e.g.,dyes,heavy metals,radionuclides,surfactants,antibiotics,ammonium,phosphorus,nitrogen and CO_(2),etc.)are systematically *** the evolution and development of morphological differences and the relationship of structure-function design of geopolymer adsorbents were compared and ***,the challenge worth overcoming,the trends worth considering and perspectives worth developing are highlighted.

关键词： Geopolymer Wastewater Adsorption Structure-function design Application

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

Effect of psychological nursing intervention on anxiety level and quality of life in patients with gastrointestinal peptic ulcer

引用

World Journal of Gastrointestinal Surgery 2024年第9期16卷 2953-2960页

作者： Xiao-Rong Zhang yan-song li Ya-Na Xu Department of Neurology Wuhan Fourth HospitalWuhan 430030Hubei ProvinceChina Department of Nursing Bengbu Railway Police CollegeBengbu 233000Anhui ProvinceChina

BACKGROUND Peptic ulcer is a common gastrointestinal disease,and psychological intervention has an important influence on its occurrence and *** To investigate the effect of psychological nursing intervention on the anxiety level and quality of life of patients with gastrointestinal peptic *** Two groups of patients with peptic ulcer were selected from January to December 2012,with 60 cases in each group,and psychological nursing intervention and routine treatment were respectively *** nursing interven-tions include cognitive behavioral therapy,psychological support and relaxation ***-rating anxiety scale(SAS)and quality of life questionnaire were used to evaluate the anxiety level and quality of life of patients before,during and after *** The SAS scores of the experimental group significantly decreased over the course of treatment,from 52.3 before treatment to 30.5 after treatment,while SAS scores of the control group did not change ***,the experimental group's quality of life score(SF-36)significantly improved over the course of treatment,from 65.2 to 85.2,while the control group remained *** analysis showed that sex and age had no significant influence on the effect of *** men and women,young and old,showed similar trends in anxiety relief and improved quality of life after *** Psychological nursing-based intervention program has a positive effect on the anxiety level and quality of life of patients with gastrointestinal peptic ulcer.

关键词： Gastrointestinal peptic ulcer Psychological nursing Anxiety level Quality of life Cognitive behavioral therapy

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

“平台摇摆”:社交平台使用者的惯习演变、动机逻辑与伦理反思

引用

编辑之友 2024年第5期 65-70页

作者：宋艳丽湖北民族大学文学与传媒学院湖北恩施445000 湖北民族大学鄂西生态文化旅游研究中心湖北恩施445000

在社交媒体环境中,用户围绕社交平台进行摇摆,以使用者身份熟练地玩转媒介指尖游戏,从过往的完成场所迁徙需要数月时间,到现在完成“平台摇摆”行为只需一秒,对社交平台与自我需求之间连接的可供性熟稔于心。文章从“平台摇摆”行为出发... 详细信息

在社交媒体环境中,用户围绕社交平台进行摇摆,以使用者身份熟练地玩转媒介指尖游戏,从过往的完成场所迁徙需要数月时间,到现在完成“平台摇摆”行为只需一秒,对社交平台与自我需求之间连接的可供性熟稔于心。文章从“平台摇摆”行为出发,深入探索社交平台使用者的惯习演变、动机逻辑与伦理反思。研究认为,“平台摇摆”行为的演变由场景生态占位,继而出现从过度特化到逐渐泛化的摇摆现象。而媒介资源与媒介生态间的相互勾连是使用者产生摇摆行为的主要动机逻辑,使用者在摇摆期间也会发生关系消解、个体时间模糊等脱域问题。

关键词：平台摇摆社交平台媒介化生存惯习动机

来源：

维普期刊数据库博看期刊

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

晶粒尺寸对Inconel 718薄板塑性微变形行为的影响:实验与建模

引用

Journal of Central South University 2024年第5期31卷 1412-1425页

作者：纪开盛刘艳雄张怡俊宋燕利尹飞魏文婷 Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China Hubei Engineering Research Center for Green Precision Material Forming Wuhan University of TechnologyWuhan 430070China Hubei Key Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China

随着航空航天工业的迅速发展,对微型化Inconel 718薄板构件的需求越来越大。然而,晶粒尺寸显著影响金属薄板的塑性变形行为,在很大程度上限制了Inconel 718薄板构件的生产和应用。本文对不同晶粒尺寸的Inconel 718薄板进行了一系列单轴... 详细信息

随着航空航天工业的迅速发展,对微型化Inconel 718薄板构件的需求越来越大。然而,晶粒尺寸显著影响金属薄板的塑性变形行为,在很大程度上限制了Inconel 718薄板构件的生产和应用。本文对不同晶粒尺寸的Inconel 718薄板进行了一系列单轴拉伸试验和扫描电镜实验,研究了晶粒尺寸对其塑性变形行为的影响。通过EBSD技术表征了晶粒尺寸、晶粒取向和晶粒平均取向偏差,阐明了晶粒尺寸效应的变形机制。研究结果表明,随着晶粒尺寸的增大,在拉伸应力作用下,晶粒旋转和协调变形机制减弱,取向转变为的晶粒数量逐渐减少,从而导致屈服强度和最大抗拉强度显著降低;此外,随着晶粒尺寸的增大,晶粒内部的塑性变形明显减弱,晶界滑动逐渐成为拉伸过程中主要的变形机制,导致断裂应变减小,韧性断裂特征减弱。本文综合考虑晶粒尺寸和应变量影响,建立了能够应用于Inconel 718薄板的微成形研究的混合材料本构模型。

关键词： Inconel 718薄板晶粒尺寸力学性能断裂机理混合材料本构模型

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

Frequency Effect of Harmonic Noise on the FitzHugh–Nagumo Neuron Model

引用

Chinese Physics Letters 2011年第12期28卷 47-50页

作者： song yan-li School of Sciences Tianjin UniversityTianjin 300072

Using harmonic noise,the frequency effect of noise on the FitzHugh–Nagumo neuron model is *** results show that the neuron has a resonance characteristic and responds strongly to the noise with a certain frequency at fixed *** by the noise with this frequency,the train is most regular and the coefficient of variation R has a *** imperfect synchronization takes place,which,however,is optimal only for noise with an appropriate *** is shown that there exists coherence resonance related to frequency.

关键词： harmonic Harmonic resonance

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

Study of steam heat transfer enhanced by CO_(2) and chemical agents: In heavy oil production

引用

Petroleum Science 2023年第2期20卷 1030-1043页

作者： Ya-li liu Chao Zhang song-yan li Zhao-Min li Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)) Ministry of EducationQingdao266580ShandongPR China School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongPR China

Steam flooding with the assistance of carbon dioxide (CO_(2)) and chemicals is an effective approach for enhancing super heavy oil recovery. However, the promotion and application of CO_(2) and chemical agent-assisted steam flooding technology have been restricted by the current lack of research on the synergistic effect of CO_(2) and chemical agents on enhanced steam flooding heat transfer. The novel experiments on CO_(2)–chemicals cooperate affected steam condensation and seepage were conducted by adding CO_(2) and two chemicals (sodium dodecyl sulfate (SDS) and the betaine temperature-salt resistant foaming agent ZK-05200).According to the experimental findings, a “film” formed on the heat-transfer medium surface following the co-injection of CO_(2) and the chemical to impede the steam heat transfer, reducing the heat transfer efficiency of steam, heat flux and condensation heat transfer coefficient. The steam seepage experiment revealed that the temperature at the back end of the sandpack model was dramatically raised by 3.5–12.8 °C by adding CO_(2) and chemical agents, achieving the goal of driving deep-formation heavy oil. The combined effect of CO_(2) and SDS was the most effective for improving steam heat transfer, the steam heat loss was reduced by 6.2%, the steam condensation cycle was prolonged by 1.3 times, the condensation heat transfer coefficient was decreased by 15.5%, and the heavy oil recovery was enhanced by 9.82%. Theoretical recommendations are offered in this study for improving the CO_(2)–chemical-assisted steam flooding technique.

关键词： Steam flooding Heavy oil Carbon dioxide Chemical agent Enhanced oil recovery(EOR) Heat transfer

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

Penny-shaped interfacial crack between dissimilar magnetoelectroelastic layers

引用

Acta Mechanica Sinica 2011年第3期27卷 371-381页

作者： yan-song li Zeng-He Xu Wen-Jie Feng Institute of Engineering Mechanics Northeastern University 110004 Shenyang China Department of Engineering Mechanics Shijiazhuang Tiedao University 050043 Shijiazhuang China

A penny-shaped interfacial crack between dissimilar magnetoelectroelastic layers subjected to magnetoelectromechanical loads is investigated,where the magnetoelectrically impermeable crack surface condition is adopted. By using Hankel transform technique,the mixed boundary value problem is firstly reduced to a system of singular integral equations,which are further reduced to a system of algebraic equations. The field intensity factors and energy release rate are finally derived. Numerical results elucidate the eects of crack configuration,electric and/or magnetic loads,and material parameters of the magnetoelectroelastic layers on crack propagation and growth. This work should be useful for the design of magnetoelectroelastic composite structures.

关键词： Interfacial crack . Penny-shaped crack - Hankel transform . Energy release rate.Magnetoelectroelastic layer

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

Quantum teleportation of particles in an environment

引用

Chinese Physics B 2020年第6期29卷 79-81页

作者： Lu yang Yu-Chen liu yan-song li State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijing 100084China Frontiers Science Center of Quantum Information Beijing 100084China School of Physics Jilin UniversityChangchun 130012China

We discuss the teleportation of particles in an environment of an N-body *** this case,we can change a many-body system into an arbitrary shape in space by teleporting some or all the constituent particles,and thus we call the quantum teleportation under this circumstance as quantum tele-transformation(QTT).The particular feature of QTT is that the wave function of the internal degrees of freedom remains the same,while the spatial wave function experiences a drastic *** notion of QTT provides conceptual and pedagogical convenience for quantum information *** view of QTT,teleportation is the change of a single particle in space,while entanglement swapping is the change of one particle of an entangled pair.

关键词： quantum tele-transformation teleportation entanglement swapping

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

Rotation-translation coupling of a double-headed Brownian motor in a traveling-wave potential

引用

Frontiers of physics 2021年第3期16卷 165-175页

作者： Wei-Xia Wu Chen-Pu li yan-li song Ying-Rong Han Zhi-Gang Zheng Science Education Department Beijing Institute of Graphic CommunicationBeijing102600China College of Science Hebei University of ArchitectureZhangjiakou075000China School of Science Tianjin UniversityTianjin300072China School of Science Hebei University of TechnologyTianjin300401China Institute of Systems Science and College of Information Science and Engineering Huaqiao UniversityXiamen361021China

Considering a double-headed Brownian motor moving with both translational and rotational degrees of freedom,we investigate the directed transport properties of the system in a traveling-wave *** is found that the traveling wave provides the essential condition of the directed transport for the system,and at an appropriate angular frequency,the positive current can be optimized.A general current reversal appears by modulating the angular frequency of the traveling wave,noise intensity,external driving force and the rod *** transforming the dynamical equation in traveling-wave potential into that in a tilted potential,the mechanism of current reversal is *** both cases of Gaussian and Lévy noises,the currents show similar dependence on the ***,the current in the tilted potential shows a typical stochastic resonance *** external driving force has also a resonance-like effect on the current in the tilted *** the current in the traveling-wave potential exhibits the reverse behaviors of that in the tilted ***,the currents obviously depend on the stability index of the Lévy noise under certain conditions.

关键词： Brownian motor rotation-translation coupling traveling-wave potential current reversal

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

Expression characteristics of peripheral lymphocyte programmed death 1 and FoxP3+ Tregs in gastric cancer during surgery and chemotherapy

引用

World Journal of Gastroenterology 2023年第40期29卷 5582-5592页

作者： Hao li Guan-Mei Cao Guo-li Gu song-yan li yang yan Ze Fu Xiao-Hui Du Graduate School Medical School of Chinese People’s Liberation ArmyBeijing 100039China Department of General Surgery Air Force Medical CenterAir Force Medical UniversityBeijing 100142China Department of Radiology Beijing Tiantan HospitalCapital Medical UniversityBeijing 100070China Department of General Surgery Chinese PLA General HospitalBeijing 100039China

BACKGROUND Programmed death 1(PD-1)and CD4^(+)CD25^(+)FoxP3^(+)expression in peripheral blood T-cells has been previously reported in various types of ***,the specific variation tendency during surgery and chemotherapy,as well as their relationship in gastric cancer patients,still remain *** this aspect may provide some novel insights for future studies on tumor recurrence and tumor immune escape,and also serve as a reference for determining the optimal timing and dose of clinical anti-PD-1 *** To observe and analyze the expression characteristics of peripheral lymphocyte PD-1 and FoxP3^(+)regulatory T cells(FoxP3^(+)Tregs)before and after surgery or chemotherapy in gastric cancer *** Twenty-nine stomach cancer patients undergoing chemotherapy after a D2 gastrectomy provided 10 mL peripheral blood samples at each phase of the perioperative period and during *** study also included 29 agematched healthy donors as a control ***-1 expression was detected on lymphocytes,including CD4^(+)CD8^(+)CD45RO^(+),CD4^(+)CD45RO^(+),and CD8^(+)CD45RO^(+)lymphocytes as well as regulatory T *** We observed a significant increase of PD-1 expression on immune subsets and a larger number of FoxP3^(+)Tregs in gastric cancer patients(Plinear correlation analysis indicated a positive correlation between PD-1 expression and the number of CD4^(+)CD45RO^(+)FoxP3high activated Tregs(aTregs)on the total peripheral lymphocytes(r=0.5622,P<0.0001).CONCLUSION The observed alterations in PD-1 expression and the activation of regulatory T cells during gastric cancer treatment may offer novel insights for future investigat

关键词： Programmed death 1 Active regulatory T cells Stomach cancer Peripheral lymphocyte

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：