检索结果-南通市图书馆

Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems

引用

Chinese Journal of Chemical Engineering 2020年第5期28卷 1375-1383页

作者： Rui Shan Yueyue shi Jing gu YazhuoWang Haoran Yuan guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China Southern Marine Science and Engineering guangdong Laboratory(guangzhou) Guangzhou 511458China CAS Key Laboratory of Renewable Energy Guangzhou 510640China guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215123China

Converting peanut shells into biochar by pyrolysis was considered an environmentally friendly and efficient method for agricultural solid waste *** properties of peanut shell-derived biochar(PBC)under different temperature and its adsorption capacity of heavy metals were *** was found that PBC400 exhibited the highest cumulative capability for heavy metals elimination in single solute because of its high specific surface area and rich functional ***,the competitive adsorption revealed that PBC had a substantial difference in adsorption affinity from diverse heavy metal ions,sorption capacity decreased as Pb2+>Cu2+>Cd2+>Ni2+>Zn2+,which was lower than in a single *** adsorption process using selected biochar was optimized with respect to p H,reaction time,adsorbent dose,and initial concentration of heavy *** kinetic data was well fitted with PSO model,and the Langmuir model was adopted for adsorption equilibrium data in both cases of single solutes and mixed solutes for all heavy metals,which indicated that the removal course was primarily explained by monolayer adsorption,and chemical adsorption occupied an important ***,peanut shells derived biochar could be a potential and green adsorbent for wastewater treatment.

关键词： Pyrolysis Biochar Heavy metal removal Competitive adsorption

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

BIFURCATIONS OF SUBHARMONIC SOLUTIONS IN PERIODIC PERTURBATION OF A HYPERBOLIC LIMIT CYCLE

引用

Applied Mathematics and Mechanics(English Edition) 2002年第8期23卷 981-986页

作者： HAN Mao-an(韩茂安) gu Sheng-shi(顾圣士) Department of Mathematics Shanghai Jiaotong University Shanghai 200030 P R China Department of Mathematics Shanghai Jiaotong University Shanghai 200030 P R China

Bifurcations of subharmonic solutions of order m of a planar periodic perturbed system near a hyperbolic limit cycle are discussed. By using a Poincare map and the method of rescaling a discriminating condition for th... 详细信息

关键词： bifurcation subharmonic solution limit cycle

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

Dispersion of ZnO Nanocrytals in Co-solvent and Its Application in Photovoltaic Material

引用

Chemical Research in Chinese Universities 2011年第6期27卷 906-909页

作者： CHEN Shao-jie ZHANG Qiu-yu ZHANG Jun-ping gu Jun-wei ZHOU jian shi You-qiang Key Laboratory of Space Materials Science and Technology Ministry of Education School of Science Northwestern Polytechnical University Xi＇an 710129 P. R. China

To overcome the aggregation of nanocrystals in a blend of inorganic material with conjugated polymers to prepare photovoltaic material, we used a co-solvent blend of CHCl3 with MeOH at a certain volume fraction to disperse inorganic nanocrystals. The results show that when the volume fraction of MeOH is 50%, ZnO nanocrystals with an average diameter of 30 nm disperse well in the co-solvent solution. Its application in photovoltaic material was investigated in this work, and the photoluminescence（PL） spectra show that when ZnO was 50%（volume fraction） in solution and 25%（volume fraction） in film, the fluorescence quenching reached the maximum values 83.34% and 64.4%, respectively, indicating that electron could transfer from conjugated polymer to electron-acceptor ZnO effectively.

关键词： ZnO nanocrystal Dispersion Co-solvent Photovoltaic material

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

Health diagnosis of ultrahigh arch dam performance using heterogeneous spatial panel vector model

引用

Water Science and Engineering 2024年第2期17卷 177-186页

作者： Er-feng Zhao Xin Li Chong-shi gu The National Key Laboratory of Water Disaster Prevention Hohai UniversityNanjing 210098China NationalEngineering Research Centerof Water Resources Eficient Utilization and Engineering Safety Hohai UniversityNanjing 20098China

Currently,more than ten ultrahigh arch dams have been constructed or are being constructed in *** control is essential to long-term operation of these *** study employed the flexibility coefficient and plastic complementary energy norm to assess the structural safety of arch dams.A comprehensive analysis was conducted,focusing on differences among conventional methods in characterizing the structural behavior of the Xiaowan arch dam in ***,the spatiotemporal characteristics of the measured performance of the Xiaowan dam were explored,including periodicity,convergence,and time-effect *** findings revealed the governing mechanism of main ***,a heterogeneous spatial panel vector model was developed,considering both common factors and specific factors affecting the safety and performance of arch *** model aims to comprehensively illustrate spatial heterogeneity between the entire structure and local regions,introducing a specific effect quantity to characterize local deformation ***,the proposed model was applied to the Xiaowan arch dam,accurately quantifying the spatiotemporal heterogeneity of dam ***,the spatiotemporal distri-bution characteristics of environmental load effects on different parts of the dam were reasonably *** of the model prediction enhances its credibility,leading to the formulation of health diagnosis criteria for future long-term operation of the Xiaowan *** findings not only enhance the predictive ability and timely control of ultrahigh arch dams'performance but also provide a crucial basis for assessing the effectiveness of engineering treatment measures.

关键词： Ultrahigh arch dam Structural performance Deformation behavior Diagnosis criterion Panel data model

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

THREE DIMENSIONAL NUMERICAL SIMULATION OF EXCAVATION AND BACKFILLING IN MINING ENGINEERING

引用

中国有色金属学会会刊：英文版 1999年第2期9卷 213-217页

作者： gu, Desheng Deng, jian Li, Xibing Zhang, Jiasheng Central South Univ of Technology Changsha China

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｒｅｃｅｎｔｔｈｉｒｔｙｙｅａｒｓ，ｗｉｔｈｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｃｏｍｐｕｔｅｒｔｅｃｈｎｉｑｕｅ，ｉｔｂｅｃｏｍｅｓｐｏｓｉｂｌｅｔｏｓｉｍｕｌａｔｅｓｕｃｈｃｏｍｐｌｉ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｒｅｃｅｎｔｔｈｉｒｔｙｙｅａｒｓ，ｗｉｔｈｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｃｏｍｐｕｔｅｒｔｅｃｈｎｉｑｕｅ，ｉｔｂｅｃｏｍｅｓｐｏｓｉｂｌｅｔｏｓｉｍｕｌａｔｅｓｕｃｈｃｏｍｐｌｉｃａｔｅｄｐｒｏｃｅｓｅｓａｓｍｉ...

关键词： mining engineeringexcavationbackfillingnumerical simulation

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

Hypergraph Turan Numbers of Vertex Disjoint Cycles

引用

Acta Mathematicae Applicatae Sinica 2022年第1期38卷 229-234页

作者： Ran gu Xue-liang LI Yong-tang shi Center for Combinatorics and LPMC Nankai UniversityTianjin 300071China

The Turan number of a k-uniform hypergraph H,denoted by exk(n;H),is the maximum number of edges in any k-uniform hypergraph F on n vertices which does not contain H as a *** Cl(k)denote the family of all k-uniform minimal cycles of length l;S(l1,…,lr)denote the family of hypergraphs consisting of unions of r vertex disjoint minimal cycles of lengthl1,…lr,respectively,and Cl(k)denote a k-uniform linear cycle of length *** determine precisely exk(n;S(l1,…,lr)and exk(n;Cl1(k),…,Cl1(k)for sufficiently large *** results extend recent results of Füredi and jiang who determined the Turan numbers for single k-uniform minimal cycles and linear cycles.

关键词： Turan number cycles extremal hypergraphs

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

Service-Driven Coded Forward Scheme Based on Streaming Transmission Model for Lunar Space Communication Networks

引用

China Communications 2020年第7期17卷 15-26页

作者： Shushi gu Ye Wang guoqing Chen Shuo shi School of Electronic and Information Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China Peng Cheng Laboratory Shenzhen 518055China School of Electronic and Information Engineering Harbin Institute of TechnologyHarbin 150001China

With the rapid development of lunar exploration,a large amount of scientific data and media stream service needs to be transmitted through Lunar Space Communication Networks(LSCNs).Due to limited transmitter power and intermittent,long delay and packet loss connections,the reliable and efficient multi-priority services’transmission in LSCNs becomes an urgent ***,we propose a Streaming Transmission Model(STM)based on temporal and spatial topology graph to describe the delay and energy consumption for data transmission in ***,we further devise a Coded Forward Scheme based on STM,termed CFS-STM,to achieve multi-priority service in two steps:i).Link Stability Function(LSF)is established by solving an optimization problem to choose the appropriate single-hop ***).Raptor code is employed to further save delay and energy with adjustable code-rate according to the different channel *** results show that,CFS-STM can significantly improve the transmission efficiency of multi-service priority streaming delivery in LSCNs.

关键词： Streaming service delay

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

Diverse Roles of Immune Cells in Transplant Rejection and Immune Tolerance

引用

Engineering 2022年第3期8卷 44-56页

作者： Xiaojie Gan jian gu Zheng Ju Ling Lu Hepatobiliary Center The First Affiliated Hospital of Nanjing Medical University&Research Unit of Liver Transplantation and Transplant ImmunologyChinese Academy of Medical SciencesNanjing 210029China

Organ transplant rejection(OTR)is a complex immune reaction involving multiple cells,and it determines graft survival and patient *** present,most transplant recipients are administered a combination of immunosuppressive and biological agents to protect them from ***,immunosuppressive agents negatively impact the immune system of the patients,causing them to suffer from serious complications,such as chronic infection and malignant ***,a thorough understanding of the mechanisms involved in immune tolerance and immune rejection with regard to organ transplant(OT)is essential for developing better treatment options and improving patient *** article reviews the role of immune cells in OTR and organ transplant tolerance(OTT),including the novel cell therapies that are currently under clinical trials for transplant recipients.

关键词： Immune cells Innate immune cells Adaptive immune cells Organ transplant Immune tolerance

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

Efficient hydrothermal deoxygenation of methyl palmitate to diesel-like hydrocarbons on carbon encapsulated Ni–Sn intermetallic compounds with methanol as hydrogen donor

引用

Frontiers of Chemical Science and Engineering 2023年第2期17卷 139-155页

作者： Haonan shi Xiaoyu gu Yinteng shi Dandan Wang Sihao Shu Zhongze Wang Jixiang Chen Tianjin Key Laboratory of Applied Catalysis Science and Technology Department of Catalysis Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China

Porous carbon-encapsulated Ni and Ni-Sn intermetallic compound catalysts were prepared by the one-pot extended Stöber method followed by carbonization and tested for in-situ hydrothermal deoxygenation of methyl palmitate with methanol as the hydrogen *** the catalyst preparation,Sn doping reduces the size of carbon spheres,and the formation of Ni-Sn intermetallic compounds restrain the graphitization,contributing to larger pore volume and pore ***,a more facile mass transfer occurs in carbon-encapsulated Ni-Sn intermetallic compound catalysts than in carbonencapsulated Ni *** the in-situ hydrothermal deoxygenation,the synergism between Ni and Sn favors palmitic acid hydrogenation to a highly reactive hexadecanal that easily either decarbonylate to n-pentadecane or is hydrogenated to *** high reaction temperature,hexadecanol undergoes dehydrogenation-decarbonylation,generating ***,the C-C bond hydrolysis and methanation are suppressed on Ni-Sn intermetallic compounds,favorable for increasing the carbon yield and reducing the H_(2) *** npentadecane and n-hexadecane yields reached 88.1%and 92.8%on carbon-encapsulated Ni_(3) Sn_(2) intermetallic compound at 330℃.After washing and H_(2) reduction,the carbon-encapsulated Ni_(3) Sn_(2) intermetallic compound remains stable during three recycling *** is ascribed to the carbon confinement that effectively suppresses the sintering and loss of metal particles under harsh hydrothermal conditions.

关键词： extended Stöber method carbon encapsulated Ni-Sn intermetallic compounds confinement in-situ hydrothermal deoxygenation hydrogenation decarbonylation

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

Classical Dynamics of a Nucleon in Heavy Nuclei

引用

Chinese Physics Letters 1998年第5期15卷 318-320页

作者： gu jian-zhong ZHAO En-guang ZHUO Yi-zhong WU Xi-zhen ZONG Hong-shi Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080 China Institute of Atomic Energy Beijing 102413

Within the framework of the two-center shell model,the classically dynamical behaviour of a nucleon in heavy nuclei is investigated when nuclear shape parameters are changed *** is found that there is a good quantum-classical correspondence of nucleonic regular(chaotic)motion so that Bohigas,Giannoni and Schmit conjecture is confirmed once again.

关键词： behaviour chaotic correspondence

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：