检索结果-南通市图书馆

Density Functional Theory Study on Raman Spectra of Rhodamine Molecules in Different Forms

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Physics 2014年第3期27卷 291-296页

作者： Yong Ma Wei hu xiu-neng Song Chuan-kui Wang College of Physics and Electronics Shandong Normal University Ji'nan 250014 China Division of Theoretical Chemistry and Biology School of Biotechnology Royal Institute of Technology Stockholm S-106 91 Sweden Department of Chemical Physics University of Science and Technology of China Hefei 230025 China

Rhodamine molecules are one of the most used dyes for applications related to Raman spectroscopy. We have systematically studied Raman spectra of Rhodamine 6G, Rhodamine 123, and Rhodamine B （RhB） molecules using density functional theory. It is found that with BP86 functional the calculated Raman spectra of cationic Rhodamine molecules are in good agreement with corresponding experimental spectra in aqueous solution. It is shown that the involvement of the counter ion, chlorine, and the specific hydrogen bonds has noticeable effects on the Raman spectra of RhB that can partially explain the observed difference between Raman spectra of RhB in solution and on gold surfaces. It also indicates that an accurate description of surface enhanced Raman scattering for Rhodamine molecules on metal surface still requires to take into account the changes induced by the interracial interactions.

关键词： Density functional theory Raman scattering Rhodamine Solvent effect

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

填方路堤水毁滑坡机理及加固措施比选研究

中外公路 2024年第3期44卷 26-34页

作者：胡明华张百永许魁安徽省交通规划设计研究总院股份有限公司安徽合肥230088 公路交通节能环保技术交通运输行业研发中心安徽合肥230088

路堤水毁病害严重影响公路正常运行,确保路堤的稳定极其重要,故开展填方路堤水毁滑坡机理分析及安全控制措施研究非常必要。该文以某高速公路路基填方路段为例,通过现场变形监测及稳定性计算,定性分析滑坡原因及形成机理,计算不同加固... 详细信息

路堤水毁病害严重影响公路正常运行,确保路堤的稳定极其重要,故开展填方路堤水毁滑坡机理分析及安全控制措施研究非常必要。该文以某高速公路路基填方路段为例,通过现场变形监测及稳定性计算,定性分析滑坡原因及形成机理,计算不同加固方案的稳定性系数,并考虑工程造价、施工工艺及施工周期等因素,推荐适宜的加固方案。结果表明:受持续强降雨影响,路堤地层不均匀沉降是造成滑塌的根本原因;因路堤左侧现存洼地,降雨汇集并渗入土层,使黏土层膨胀软化及排水通道堵塞,进一步加快滑坡的形成;采用钢管桩与回填反压的复合加固方案,其稳定性满足要求,现场监测表明加固效果良好。

关键词：路堤边坡水毁滑坡稳定性分析加固措施方案比选

一种求解时间分数阶非线性抛物型方程的等阶混合有限元

在线全文

学校读者我要写书评

暂无评论

四川大学学报（自然科学版） 2024年第4期61卷 70-79页

作者：唐瑜岭胡朝浪杨荣奎冯民富四川大学数学学院成都610064

为数值求解时间分数阶非线性抛物型方程,本文提出了一种k次等阶混合有限元.为获得有限元的完全离散格式,本文在时间方向上考虑经典L1格式、在空间方向上使用基于局部投影的稳定混合有限元.本文定义了混合投影并得到了有限元的误差估计.... 详细信息

为数值求解时间分数阶非线性抛物型方程,本文提出了一种k次等阶混合有限元.为获得有限元的完全离散格式,本文在时间方向上考虑经典L1格式、在空间方向上使用基于局部投影的稳定混合有限元.本文定义了混合投影并得到了有限元的误差估计.数值算例验证了理论结果 .

关键词：混合有限元时间分数阶非线性抛物型方程逼近

全民健身场地设施配置政策的多源流分析与启示

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

广州体育学院学报 2024年第2期44卷 27-36页

作者：李远洋陈家起高奎亭蒋全虎南京师范大学体育科学学院江苏南京210023 山东理工大学体育学院山东淄博255000

推进全民健身场地设施配置政策高质量发展是构建更高水平全民健身公共服务体系的基本内容。运用文献资料、逻辑分析等方法,以多源流理论为学理支撑,解析我国全民健身场地设施配置政策高质量发展的多元动力,探究三大源流中的现实桎梏。... 详细信息

推进全民健身场地设施配置政策高质量发展是构建更高水平全民健身公共服务体系的基本内容。运用文献资料、逻辑分析等方法,以多源流理论为学理支撑,解析我国全民健身场地设施配置政策高质量发展的多元动力,探究三大源流中的现实桎梏。研究发现:问题识别与问题反馈窗口模糊、精英决策与群众民主失调、党建引领作用与政府职能弱化是缓滞政策之窗启动的重要因素。为加快实现健身设施配置政策的高质量发展,一要深谙问题源流,重视关键问题导向,完善问题反馈窗口;二要把握政策源流,强化民主决策,畅通政策执行机制;三要推进政治源流,发展党建引领作用,突出政府部门主导功能,同时在政策企业家的积极助力下促进三源流耦合,共同推动全民健身场地设施配置政策科学化发展。

关键词：全民健身场地设施政策分析多源流理论

北部湾盆地涠西南凹陷涠洲组断裂—岩性复合圈闭发育模式与勘探实践

在线全文

学校读者我要写书评

暂无评论

石油实验地质 2024年第2期46卷 215-227页

作者：胡德胜孙文钊满晓陈奎陈丽君宫立园李珊珊中海石油(中国)有限公司湛江分公司广东湛江524057 中海石油(中国)有限公司海南分公司海口570300

为了解决北部湾盆地涠西南凹陷勘探目标搜索和油田可持续开发难度大的问题,对该区二号断裂带渐新统涠洲组三段构造圈闭发育层段开展了断裂—岩性复合圈闭研究。通过对控洼断裂演化与涠三段沉积特征关系的研究,发现涠三段沉积期二号断裂... 详细信息

为了解决北部湾盆地涠西南凹陷勘探目标搜索和油田可持续开发难度大的问题,对该区二号断裂带渐新统涠洲组三段构造圈闭发育层段开展了断裂—岩性复合圈闭研究。通过对控洼断裂演化与涠三段沉积特征关系的研究,发现涠三段沉积期二号断裂带活动性较弱,凹陷长轴方向辫状河三角洲水下分流河道向洼中持续推进;涠二段、涠一段沉积期区域构造活动强烈,产生一系列雁列式断裂,辫状河三角洲前缘形成的相对孤立的水下分流河道与呈雁列式断裂形成角度交错相互切割,从而形成了NE—SW向靠断层封堵、NW—SE向靠砂体尖灭的特色河道型构造—岩性圈闭群。研究表明:(1)涠三段发育“二号断裂带洼中断隆背景、低频摆动水道、雁列张扭断裂”三因素耦合的断裂—岩性型圈闭模式,辫状河三角洲水下分流河道主流线与二号断裂带的交会区是构造—岩性圈闭有利发育区带;(2)近物源交会区主要发育复合型构造—岩性圈闭,远物源交会区主要发育孤立型构造—岩性圈闭,建立了凹陷轴向河道控砂,断裂、砂体复合控藏的成藏模式。断裂—岩性型圈闭模式和成藏模式应用效果好,搜索了一批NE—SW向靠断层封堵、NW—SE向靠砂体尖灭的有利断裂—岩性复合圈闭群,并在涠B-E构造得到很好的应用,WB-E 1井钻遇油层近100 m,后续多口井钻探成功,新增油气探明地质储量超千万立方米,证实二号断裂带涠三段断裂—岩性复合圈闭是重要的勘探领域。

关键词：断裂断裂—岩性复合圈闭油气成藏涠洲组渐新统涠西南凹陷北部湾盆地

120 m高钢筋混凝土烟囱拆除爆破与数值模拟研究

在线全文

学校读者我要写书评

暂无评论

工程爆破 2024年第3期30卷 62-68页

作者：胡葵柴亚博罗宁张浩浩刘玉华北京安联国科科技咨询有限公司北京101312 辽宁工程技术大学安全科学与工程学院辽宁阜新123000 中国矿业大学力学与土木工程学院江苏徐州221116 河南省公安厅治安总队郑州450003

为成功爆破拆除一座120 m高钢筋混凝土烟囱,根据实际工程环境、工程结构特点完成爆破方案的设计,并运用有限元软件LS-DYNA进行了的爆破设计的合理性验证。结果表明:数值模拟倒塌过程与实际倒塌过程高度一致,烟囱的倒塌过程持续10.5 s左... 详细信息

为成功爆破拆除一座120 m高钢筋混凝土烟囱,根据实际工程环境、工程结构特点完成爆破方案的设计,并运用有限元软件LS-DYNA进行了的爆破设计的合理性验证。结果表明:数值模拟倒塌过程与实际倒塌过程高度一致,烟囱的倒塌过程持续10.5 s左右,在倒塌过程中烟囱筒体主要经历切口闭合、下坐、触地倒塌3个阶段,不同阶段运动规律特征明显。爆破方案整体合理,钢筋混凝土烟囱被成功拆除爆破,达到预期效果,对于相似工程实践具有指导意义。

关键词：钢筋混凝土烟囱拆除爆破爆破设计数值模拟

Sequential or simultaneous transarterial chemoembolization and radiofrequency ablation for hepatocellular carcinoma within the Milan criteria:A retrospective real-world study

在线全文

学校读者我要写书评

暂无评论

Portal Hypertension & Cirrhosis 2024年第2期3卷 105-115页

作者： Jianwei Liu Minmin Sun Zhiliang hu Jie Wang Caixia Lu Ya Gao Cuijuan He Yeye Wu Jian Zhai Yong xia xiaorong Pan kui Wang Department of Hepatic Surgery II Third Affiliated Hospital of Naval Medical University(Eastern Hepatobiliary Surgery Hospital)ShanghaiChina Department of Hepatic Surgery I Third Affiliated Hospital of Naval Medical University(Eastern Hepatobiliary Surgery Hospital)ShanghaiChina Department of Clinical Research Institute Third Affiliated Hospital of Naval Medical University(Eastern Hepatobiliary Surgery Hospital)ShanghaiChina Department II of Interventional Radiology Third Affiliated Hospital of Naval Medical University(Eastern Hepatobiliary Surgery Hospital)ShanghaiChina Department of Hepatic Surgery IV Third Affiliated Hospital of Naval Medical University(Eastern Hepatobiliary Surgery Hospital)ShanghaiChina Shanghai Baoshan District Songnan Town Community Health Service Center ShanghaiChina

Aims:Few studies have investigated differences in sequential transarterial chemoembolization(TACE),radiofrequency ablation(RFA),and simultaneous RFA-TACE for the treatment of hepatocellular carcinoma(HCC)using the Milan *** study explored the differences in safety and prognosis between sequential TACE-RFA and simultaneous ***:This retrospective real-world study included 109 patients with HCC within the Milan criteria who underwent sequential TACE-RFA(n=75)or simultaneous RFA-TACE(n=34)at the Eastern Hepatobiliary Surgery Hospital between January 2017 and *** complications,length of hospital stay,and long-term prognosis were *** median follow-up duration of these patients was 39.1 *** survival(OS)and time to tumor recurrence(TTR)curves were plotted using the Kaplan−Meier method and were compared using the logarithmic rank *** risk factors for OS and tumor recurrence(TR)were analyzed using the Cox risk regression ***:Multivariate analysis showed that tumor diameter>3 cm(hazard ratio[HR]:2.201,95%confidence interval[CI]:1.106-4.378,p=0.025;HR:2.236,95%CI:1.271-3.934,p=0.005,respectively)and alphafetoprotein(AFP)>400μg/L(HR:2.362,95%CI:1.195-4.668,p=0.013;HR:1.798,95%CI:1.048-3.086,p=0.033,respectively)were independent risk factors for OS and TTR,whereas the presence of multiple tumors(HR:2.352,95%CI:1.127-4.907,p=0.023)was an independent risk factor for *** RFA-TACE did not have an effect on OS or *** propensity score-matched,comparable results were obtained and RFATACE still had no effect on OS or *** significant differences were observed in grade III/IV complications(2/75[2.7%]vs.1/34[2.9%],p=1.000)between the two ***,the RFA-TACE group had fewer complications than the TACE-RFA group(24/34[70.6%]vs.66/75[88.0%],p=0.026).The RFA-TACE group had a shorter hospital stay and less total cost during hospitalization compared with the TACE-RFA group(6.0 vs.10.0 da

关键词： complications hepatocellular carcinoma prognosis radiofrequency ablation transarterial chemoembolization

Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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

Chinese Physics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis x.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai x.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen M.L.Chen S.J.Chen S.L.Chen S.M.Chen T.Chen x.R.Chen x.T.Chen Y.B.Chen Y.Q.Chen Z.J.Chen Z.Y.Chen S.K.Choi x.Chu G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.x.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng K.Fischer M.Fritsch C.D.Fu J.L.Fu Y.W.Fu H.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck B.Ding x.x.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong x.Dong M.C.Du S.x.Du Z.H.Duan P.Egorov Y.H.Fan J.Fang JA.Gilman K.Goetzen L.Gong W.x.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han x.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold T.Holtmann P.C.Hong G.Y.Hou x.T.Hou Y.R.Hou Z.L.Hou B.Y.hu H.M.hu J.F.hu T.hu Y.hu G.S.huang K.x.huang L.Q.huang x.T.huang Y.P.huang T.hussain F.H\"olzken N.H\"usken N.in der Wiesche M.Irshad J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji x.B.Ji x.L.Ji Y.Y.Ji x.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang x.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing x.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki x.L.Kang x.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner x.kui A.Kupsc W.K\"uhn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.Li H.B.Li H.J.Li H.N.Li hui Li J.R.Li J.S.Li K.Li L.J.Li L.K.Li Lei Li M.H.Li P.R.Li Q.M.Li Q.x.Li R.Li S.x.Li T.Li W.D.Li W.G.Li x.Li x.H.Li x.L.Li x.Y.Li Y Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China Central South University Changsha 410083China China Center of Advanced Science and Technology Beijing 100190China China University of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Hebei University Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of Science and Technology Luoyang 471003China Henan University of Technology Zhengzhou 450001China huangshan College Huangshan 245000China hunan Normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis CP-even fraction

Adsorption and mechanistic study of the invasive plant-derived biochar functionalized with CaAl-LDH for Eu(Ⅲ) in water

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

Journal of Environmental Sciences 2020年第10期32卷 127-137页

作者： Shengbo Li Lijia Dong Zuofu Wei Guodong Sheng kui Du Baowei hu School of Life Science School of Chernistry and Chemical EngineeringShaoxing UniversityShaoxing 312000China School of Life Science Shanxi Normal UniuersityLinfen 041004China

Herein,we developed the invasive plant-derived biochar (IPB) functionalized with CaAl-LDH at five mass ratios using a physical mixture method,assessed their adsorption perform for Eu(Ⅲ),and explored the relative *** show that the IPB successfully loaded CaAl-LDH in five composites and their Eu(Ⅲ) sorption affinities were strongly affected by solution p H,contact time,temperature,and the mass ratio of LDH and *** the sorpiton process for Eu(Ⅲ) occurred on the heterogeneous surface of five composites and the boundary layer diffusion limited the chemical sorption ***,the CaAl-LDH/IPB composite with high ratio of IPB had higher sorption capacity than the one with high ratio of LDH due to larger porosity of the *** mechanisms containing ion exchange between Al and Eu ions,surface complexation with carboxyl-and oxygen-containing functional groups,and precipitation were involved in the Eu(Ⅲ) sorption,but the dominant sorption mechanism for each CaAl-LDH/IPB composite differed with different mass ratio of CaAl-LDH and *** composite with more IPB (e.g.,CaAl-LDH/IPB-13),both ion exchange and surface complexes dominated the sorption process and the intensity of Eu^3+ was identified with the one of *** in composites with high LDH,ion exchange dominated the sorption and the intensity of Eu^3+ was obviously higher than the one of Eu_2O_*** research will provide a new perspective for the application of the LDH/biochar materials.

关键词： Invasive plants Biochar LDH Europium sorption