检索结果-南通市图书馆

Complexation of radionuclide ^152＋154Eu(Ⅲ) with alumina-bound fulvic acid studied by batch and time-resolved laser fluorescence spectroscopy

引用

Science China Chemistry 2017年第1期60卷 107-114页

作者： Xiangxue Wang shujun Yu Zhongshan Chen Wencheng song Yuantao Chen Tasawar Hayat Ahmed Alsaedi Wei Guo Jun Hu Xiangke Wang School of Environment and Chemical Engineering North China Electric Power University Beijing 102206 China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions China Department of Chemistry Qinghai Normal University 810008 Xining Qinghai China NAAM Research Group Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabia Department of Mathematics Quaid-I-Azam University Islamabad 44000 Pakistan

To contribute to the understanding of Eu(Ⅲ)interaction properties on hydrous alumina particles in the absence and presence of fulvic acid(FA),the complexation properties of Eu(Ⅲ)with hydrous alumina,FA and FA-alumina hybrids are studied by batch and time-resolved laser fluorescence spectroscopy(TRLFS)*** continuous increase in the fluorescence lifetime of Eu-alumina and Eu-FA with increasing pH indicates that the complexation is accompanied by decreasing number of hydration water in the first coordination sphere of Eu(Ⅲ).Eu(Ⅲ)is adsorbed onto alumina particles as outer-sphere surface complexes of≡(Al-O)-Eu·(OH)·7H_2O and≡(Al-O)-Eu·6H_2O at low pH values,and as inner-sphere surface complexes as≡(Al-O)_2-Eu^+·4H_2O at high *** FA solution,Eu(Ⅲ)forms complexes with FA as(COO)_2Eu^+(H_2O)_x and the hydration water number in the first coordination sphere decreases with pH *** formation of≡COO-Eu-(O-Al≡)·4H_2O is observed on FA-alumina hybrids,suggesting the formation of strong inner-sphere surface complexes in the presence of *** surface complexes are also characterized by their emission spectra[the ratio of emission intensities of^5D_0→~7F_1(λ=594nm)and^5D_0→~7F_2(λ=619nm)transitions]and their fluorescence *** findings is important to understand the contribution of FA in the complexation properties of Eu(Ⅲ)on FA-alumina hybrids that the clarification of the environmental behavior of humic substances is necessary to understand fully the behavior of Eu(Ⅲ),or its analogue trivalent lanthanide and actinide ions in natural environment.

关键词： Eu(Ⅲ) fulvic acid alumina particles sorption time-resolved laser fluorescence spectroscopy

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

Collective flow and fluid behavior in p/d/^(3)He+Au collisions at√s_(NN)=200 GeV

引用

Chinese Physics C 2024年第10期48卷 185-192页

作者： Zeming Wu Baochi Fu shujun Zhao Runsheng Liu Huichao song School of Physics Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China Center for High Energy Physics Peking UniversityBeijing 100871China

By varying the intrinsic initial geometry,p/d/^(3)He+Au collisions at the Relativistic Heavy Ion Collider(RHIC)provide a unique opportunity to understand the collective behavior and probe possible sub-nucleon fluctuations in small *** this study,we employed the hybrid model under TRENTo initial conditions to study the collective flow and fluid behavior in p/d/^(3)He+Au *** fine-tuned parameters,iEBE-VISHNU can describe the v_(2)(pT) and v_(3)(pT) data from the PHENIX and STAR ***,for certain parameter sets with initial sub-nucleon fluctuations,the hydrodynamic simulations already go beyond their limits with an average Knudsen number clearly larger than *** calculations demonstrate that,for a meaningful evaluation of the fluid behavior in small systems,model simulations must also pay attention to the validity range of hydrodynamics.

关键词： heavy-ion collisions hydrodynamics collective flow

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

Ce and W co-doped CaBi_(2)Nb_(2)O_(9) with enhanced piezoelectric constant and electrical resistivity at high temperature

引用

Journal of Materiomics 2020年第3期6卷 459-466页

作者： Zong-Yang Shen Chen Qin Wen-Qin Luo Fusheng song Zhumei Wang Yueming Li shujun Zhang Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province China National Light Industry Key Laboratory of Functional Ceramic MaterialsSchool of Materials Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333403China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongWollongongNSW2500Australia

Ce and W co-doped CaBi_(2)Nb_(2)O_(9) ceramics with chemical formula Ca_(0.96)Ce_(0.04)Bi_(2)Nb_(2-x)W_(x)O_(9)(CCBNW100x,x=0-0.07)are fabricated via conventional solid state sintering method,to investigate the effect of W addition on the structure,electrical resistivity,dielectric and piezoelectric properties.A piezoelectric constant d33 of 13.4 pC/N is obtained in CCBN-W2 ceramics,>100% higher than that of pure CaBi_(2)Nb_(2)O_(9)(d_(33)=5.8e6.4 pC/N).Of particular significance is that the electrical resistivity of CCBN-W2 ceramics(r=3.7×109 U cm at 500℃)is three orders of magnitude higher than pure CaBi_(2)Nb_(2)O_(9)(r=2.9×10^(6) U cm at same temperature).All these properties,together with its low dielectric loss(tandδ0.13%)and excellent d33 thermal stability up to 800℃,merit the CCBN-W2 ceramics for high temperature piezoelectric sensing applications.

关键词： Ultra-high temperature ceramics Piezoelectric properties Aurivillius phase Bismuth layered structure CaBi_(2)Nb_(2)O_(9)

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

6例多中心胶质瘤的临床分析及文献回顾

引用

癌症进展 2019年第17期17卷 2086-2089页

作者：苏晓明宋淑军苗延浚樊晶晶申玉龙吴清芹单改仙王宗烨战略支援部队特色医学中心放疗科北京1001010 战略支援部队特色医学中心特色医学实验中心北京1001010

目的探讨多中心胶质瘤的治疗方法及预后情况。方法选取战略支援部队特色医学中心收治的6例多中心胶质瘤患者,所有患者均给予放疗同步替莫唑胺化疗,4例患者行手术治疗,1例患者行立体定向活检,1例患者未行手术治疗。结合国内外相关文献,... 详细信息

目的探讨多中心胶质瘤的治疗方法及预后情况。方法选取战略支援部队特色医学中心收治的6例多中心胶质瘤患者,所有患者均给予放疗同步替莫唑胺化疗,4例患者行手术治疗,1例患者行立体定向活检,1例患者未行手术治疗。结合国内外相关文献,对多中心胶质瘤患者的治疗方法及预后情况进行分析。结果6例收治的多中心胶质瘤患者中,1例患者于放疗后10个月死亡,1例患者于放疗后6个月复发,4例患者于放疗后6~8个月复查肿瘤未见明显进展。结论多中心胶质瘤患者的预后较差,临床应尽可能地行手术治疗,术后行多病灶局部调强放疗同步替莫唑胺化疗。

关键词：多中心胶质瘤替莫唑胺放射治疗

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 time-resolved proteotranscriptomics atlas of the human placenta reveals pan-cancer immunomodulators

引用

Signal Transduction and Targeted Therapy 2020年第1期5卷 1479-1481页

作者： Na Ding Botao Zhang Wantao Ying Jie song Lin Feng Kaitai Zhang Hongxia Li Juan Xu Ting Xiao shujun Cheng College of Bioinformatics Science and Technology Harbin Medical UniversityHarbin 150081China State Key Laboratory of Molecular Oncology Department of Etiology and CarcinogenesisNational Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Department of Neurooncology Neurosurgery CenterBeijing Tiantan HospitalCapital Medical UniversityBeijing 100070China State Key Laboratory of Proteomics Beijing Proteome Research CenterNational Center for Protein Sciences(Beijing)Beijing Institute of LifeomicsBeijing 102206China Department of Obstetrics and Gynecology Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China

Dear Editor,The placenta separates fetus and mother,with the trophoblast playing a most important role in defense against potential harm from the maternal immune *** the placenta is normal tissue,it shares several common features with malignant cells.1 Based on similar strategies,these cells are able to successfully coexist in an immunologically hostile environment.2 A detailed analysis and comparison of different placental model systems will not only contribute to our in-depth understanding of the exciting field of placental development research but also may offer valuable insights on the broad field of cancer studies.

关键词： mother fetus resolved

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

Erratum on “Complexation of radionuclide 152+154Eu（Ⅲ） with alumina-bound fulvic acid studied by batch and time-resolved laser fluorescence spectroscopy” [Sci. China Chem., 2017, 60: 107–114]

引用

Science China Chemistry 2019年第12期62卷 1732-1733页

作者： Xiangxue Wang shujun Yu Zhongshan Chen Wencheng song Yuantao Chen Tasawar Hayat Ahmed Alsaedi Wei Guo Jun Hu Xiangke Wang School of Environment and Chemical Engineering North China Electric Power UniversityBeijing 102206China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions China Department of Chemistry Qinghai Normal University810008XiningQinghaiChina NAAM Research Group Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Mathematics Quaid-I-Azam UniversityIslamabad 44000Pakistan

In the above referenced publication[1],the Figure 5 and data in Table 1 are correct,but we ignored to present the final pH values of the system,which is very important to understand the properties.

关键词： properties. Figure batch

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

经皮冠状动脉介入治疗患者血小板高反应性的精准评估与临床策略浅析

引用

医学综述 2017年第18期23卷 3604-3609,3614页

作者：李京秀宋兆炎闫述钧孙驰李学奇韩百合李阳夏德军李馨金恩泽哈尔滨医科大学附属第四医院心血管内科哈尔滨150001

血小板的黏附、活化、聚集在急性冠状动脉综合征及经皮冠状动脉介入(PCI)治疗的病理生理进程中占主导地位。阿司匹林和血小板腺苷二磷酸P2Y12受体抑制剂(氯吡格雷、替格瑞洛等)是临床应用的经典抗血小板药物,同时也是急性冠状动脉综合征... 详细信息

血小板的黏附、活化、聚集在急性冠状动脉综合征及经皮冠状动脉介入(PCI)治疗的病理生理进程中占主导地位。阿司匹林和血小板腺苷二磷酸P2Y12受体抑制剂(氯吡格雷、替格瑞洛等)是临床应用的经典抗血小板药物,同时也是急性冠状动脉综合征与PCI的基石。随着对抗血小板领域研究的不断拓展,个体对抗血小板药物治疗存在明显的反应性差异,这种差异与冠状动脉支架术后复合终点事件显著相关。因此,精准评估PCI患者在接受抗血小板药物治疗后血小板反应性的情况,给予规范化、个体化的临床治疗方案以减少死亡、非致死性心肌梗死、血栓事件及出血事件的发生,对改善患者远期预后具有深远的临床意义。

关键词：氯吡格雷血小板高反应性血小板腺苷二磷酸P2Y12受体抑制剂

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 Spatial Distribution of Settlements in the Upper Reaches of the Minjiang River

引用

Open Journal of Applied Sciences 2023年第11期13卷 1967-1981页

作者： Lijun song shujun Tian Lan Yang Na Fan School of Civil Engineering and Architecture Southwest University of Science and Technology Mianyang China

Under the background of the uplift of the Qinghai-Tibet Plateau, the settlements in the upper reaches of the Min River are significantly affected by the mountain environment, and their spatial distribution is typical and representative. In this study, the relationship between settlements and topography, rivers and transportation, and the spatial distribution patterns of settlements, such as the aggregation and orientation characteristics of settlements, have been studied. The main conclusions include: 1) The settlement density decreases with the increase of elevation, slope, and distance from rivers and roads;76.25% and 63.17% of the settlements are distributed in the range of elevation 1500 - 3000 m and slope 6° - 25°, the upper reaches of the Min River are mostly alpine valley terrain, the bottom of the river has a low altitude, the landscape is undulating. The warm and humid climate is suitable for farming, conducive to agricultural production, and an ideal living environment for mountain residents. 2) The nuclear density of the settlement is distributed in strips along the axis of the river, and the closer to the river, the greater the nuclear density value. 3) Mathematical statistical methods were applied for the first time to realize the quantitative expression of the coupling of settlement and river direction. The influence of topographic conditions in different watersheds on the coupling degree of settlement extension and river flow direction was revealed. The slope of the fitted straight line between the settlement and river direction was 0.897, and the two directions were consistent. Except for the mainstream of the Min River, the larger values of the standard deviation ellipse flattening of settlements in each basin appeared in the upper reaches of the bay, and the overall trend showed a gradual decrease from the upstream to the downstream, which was consistent with the topographic change characteristics of the basin.

关键词： Settlement Spatial Distribution Agglomeration Alpine Valleys The Upper Reaches of the Minjiang River

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

CD4+T cells memorize obesity and promote weight regain

引用

Cellular & Molecular Immunology 2018年第6期15卷 630-639页

作者： Jianghuan Zou Beibei Lai Mingzhu Zheng Qin Chen shujun Jiang Anying song Zan Huang Peiliang Shi Xin Tu Di Wang Linrong Lu Zhaoyu Lin Xiang Gao State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study Model Animal Research CenterNanjing Biomedical Research InstituteNanjing University12 Xuefu RoadPukou DistrictNanjingJiangsu 210061China Institute of Immunology Program in Molecular and Cellular BiologyZhejiang University School of MedicineHangzhouZhejiang 310058China

Body weight regain often causes failure of obesity therapies while the underlying mechanism remains largely *** this study,we report that immune cells,especially CD4+T cells,mediate the‘memory’of previous obese *** a weight gain-loss-regain model,we found that C57BL/6J mice with an obesity history showed a much faster rate of body weight *** obesity memory could last for at least 2 months after previously obese mice were kept at the same body weight as non-obese ***,such obesity memory was abrogated by dexamethasone treatment,whereas immunodeficient Rag1−/−and H2A−/−mice failed to establish such ***1−/−mice repossessed the obesity memory when immune cells or CD4+T cells isolated from previously obese mice were ***,depletion of CD4+T cells led to obesity memory *** together,we conclude that CD4+T cells mediate obesity memory and promote weight regain.

关键词： CD4+T cell immunodeficiency metabolism obesity memory weight regain

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

Prodrugs incorporated into nanotechnology-based drug delivery systems for possible improvement in bioavailability of ocular drugs delivery

引用

Asian Journal of Pharmaceutical Sciences 2013年第4期8卷 207-217页

作者： Tiantian Ye Kun Yuan Wenji Zhang Shuangshuang song Fen Chen Xinggang Yang shujun Wang Jianwei Bi Weisan Pan School of Pharmacy Shenyang Pharmaceutical UniversityShenyang 110016China Shangdong Wego Pharmaceutical Co.Ltd Weihai 264209China

Numerous systems have been designed during the past three decades to improve bioavailability of ophthalmic drug delivery,including:ocular prodrugs and nanotechnology-based drug delivery *** former can improve the efficacy of ocular drug via enhancing corneal penetration of ocular drugs,prolonging their duration of action and/or reducing the systemic side-effects,unfortunately,some characteristics of the pro-drugs,such as poorly aqueous stability,poorly aqueous solubility and severe eye irritation probably,limit their clinical practice and cannot be *** we all know,nanotech-nology for ocular drug delivery can carry poorly soluble drugs,protect the encapsulated molecules from hydrolysis,control the rate of drug delivery and prolong the precorneal retention of *** of these merits may solve the problems in the utilization of ocular prodrugs and increase the bioavailability of ocular drug *** reviewing recent ad-vances of prodrugs and nanostructures in ocular drug delivery,this paper focus specifically on the promising prospects of nanocarriers overcoming the drawbacks of prodrugs for ophthalmic drug delivery by precorneal routes.

关键词： Ocular/ophthalmic drug delivery Prodrugs Nanocarriers Penetration Precorneal retention Bioavailability

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：