检索结果-南通市图书馆

Theoretical study on stereodynamics of H+NeH^+(v=0,j=0)→H_2^++Ne reaction

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2012年第36期57卷 4712-4717页

作者： YIN ShuHui zou jinghan GUO MingXing XU XueSong GAO Hong LI Lei CHE Li Department of Physics Dalian Maritime UniversityDalian 116026China Environmental Science and Engineering College Dalian Maritime UniversityDalian 116026China

Stereodynamics of reaction H + NeH+(v = 0,j = 0) → H2+ + Ne is investigated by quasi-classical trajectory method using a new potential energy surface constructed by Lv et *** distributions of P(r),P(r) and PDDCSs are calculated at four different collision *** rotational polarization of product H2+ presents different characters at different collision *** product rotational angular momentum vector j' is not only aligned,but also oriented along the direction perpendicular to the scattering *** the increase of collision energy,the rotation of product molecule has a preference of changing from the "in-plane" mechanism to the "out-of-plane" *** the title reaction is mainly dominated by the direct reaction mechanism,the indirect mechanism plays a role when the collision energies are low.

关键词：反应机制立体碰撞能量 NE 经典轨迹分布计算势能面角动量

Photoelectron imaging spectroscopic signatures of CO activation by the heterotrinuclear titanium-nickel clusters

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2023年第6期34卷 567-571页

作者： Jianpeng Yang Jumei Zhang Shihu Du Gang Li jinghan zou Qiangshan Jing Hua Xie Ling Jiang College of Chemistry and Chemical Engineering Xinyang Normal UniversityXinyang 464000China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China School of Life Science Ludong UniversityYantai 264025China

A series of heterotrinuclear Ti_(2)Ni(CO)_(n)^(-)(n=6-9)carbonyls have been generated via a laser vaporization supersonic cluster source and characterized by mass-selected photoelectron velocity-map imaging *** chemical calculations have been carried out to identify the structures and understand the experimental spectral *** results indicate that a building block of Ti-Ti-Ni-C four-membered ring with the C atom bonded to Ti,Ti,and Ni is dominated in the n=6-8 complexes,whereas a structural motif of Ti-Ti-Ni triangle core is preferred in n=*** complexes are found to be capable of simultaneously accommodating all the main modes of metal-CO coordination(i.e.,terminal,bridging,and side-on modes),where the corresponding mode points to the weak,moderate,high C-O bond activation,*** number of CO ligands for a specific bonding mode varies with the cluster *** findings have important implications for molecular-level understanding of the interaction of CO with alloy surfaces/interfaces and tuning the appropriate CO activation via the selection of different metals.

关键词： CO activation Transition metal carbonyl Heteronuclear cluster Photoelectron imaging Quantum chemical calculations

CO oxidation on the heterodinuclear tantalum-nickel monoxide carbonyl complex anions

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第2期32卷 854-860页

作者： Jumei Zhang Ya Li Yan Bai Gang Li Dong Yang Huijun Zheng jinghan zou Xiangtao Kong Hongjun Fan Zhiling Liu Ling Jiang Hua Xie State Key Laboratory of Molecular Reaction Dynamics Collaborative Innovation Center of Chemistry for Energy and Materials(iChEM)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China School of Chemical and Material Science Key Laboratory of Magnetic Molecules&Magnetic Information MaterialsMinistry of EducationShanxi Normal UniversityLinfen 041004China University of Chinese Academy of Sciences Beijing 100049China

The series of heterodinuclear metal oxide carbonyls in the form of TaNiO(CO)_(n)(n=5-8) are generated in the pulsed-laser vaporization source and characterized by mass-selected photoelectron velocity-map *** the consecutive CO adsorption,the μ^(2)-O-bent structure initially is the most favorable for TaNiO(CO)_(5),and subsequently both μ^(2)-O-bent and μ^(2)-O-linear structures are degenerate for TaNiO(CO)_(6),then the μ^(2)-O-linear structure is most preferential for TaNiO(CO)_(7),and finally the η^(2)-CO_(2)-tagged structure is the most ene rgetically competitive one for TaNiO(CO)_(8),i.e., the CO oxidation occurs at n=*** contrast to the literature reported CO oxidation on heteronuclear metal oxide complexes generally proceeding via Langmuir-Hinshelwood-like mechanism,complementary theo retical calculations suggest that both Langmuir-Hinshelwood-like and Eley-Rideal-like mechanisms prevail for the CO oxidation reaction on TaNiO(CO)_(8) *** findings provide new insight into the composition-selective mechanism of CO oxidation on heteronuclear metal complexes,of which the composition be tailored to fulfill the desired chemical behaviors.

关键词： CO oxidation Photoelectron imaging Heteronuclear oxide Density functional theory Transition metal carbonyl

在线全文

学校读者我要写书评

暂无评论

浅议“淮河洪水”

河南水利与南水北调 2010年第11期39卷 3-6页

作者：邹敬涵河南省水文水资源局

在全国七大江河中,淮河以"洪水灾害最为严重"著称。本文根据多年从事淮河防汛工作经验及近几年参与编著"2003年淮河暴雨洪水"等心得体会,对淮河洪水频繁原因、洪水类型、大小比较以及防洪减灾等谈几点认识、看法。本文所议的"淮河"、"... 详细信息

在全国七大江河中,淮河以"洪水灾害最为严重"著称。本文根据多年从事淮河防汛工作经验及近几年参与编著"2003年淮河暴雨洪水"等心得体会,对淮河洪水频繁原因、洪水类型、大小比较以及防洪减灾等谈几点认识、看法。本文所议的"淮河"、"淮河流域"仅都是指淮河水系而不包括沂沭泗水系。

关键词：淮河洪水类型洪水大小防洪减灾

居家认知行为模式对乳腺癌术后化疗患者心理状态及希望水平的影响

在线全文

学校读者我要写书评

暂无评论

齐鲁护理杂志 2020年第10期26卷 18-20页

作者：邹景函张琼梁伟华中科技大学同济医学院附属同济医院湖北武汉430000

目的:探讨居家认知行为模式对乳腺癌术后化疗患者心理状态及希望水平的影响。方法:将2016年10月1日~2018年10月31日医院收治的108例乳腺癌术后化疗患者随机分为对照组和观察组各54例,对照组采用肿瘤科常规护理措施,观察组在常规护理基... 详细信息

目的:探讨居家认知行为模式对乳腺癌术后化疗患者心理状态及希望水平的影响。方法:将2016年10月1日~2018年10月31日医院收治的108例乳腺癌术后化疗患者随机分为对照组和观察组各54例,对照组采用肿瘤科常规护理措施,观察组在常规护理基础上采用居家认知行为模式。比较两组患者心理状态及希望水平的变化。结果:将两组简明心境量表(POMS)评分中30项均纳入探索性因子进行分析,结果显示,KOM=0.759,P<0.05;两组干预前症状群为4项,干预后症状群为3项;与干预前比较,观察组干预后各症状群明显改善,而对照组干预后则无明显改善,干预后观察组各症状群均优于对照组;干预后观察组Herth希望量表评分升高,且高于对照组(P<0.01)。结论:居家认知行为模式能够改善乳腺癌患者心理症状群和希望水平,具有较高的临床应用价值。

关键词：乳腺癌术后化疗居家认知行为模式心理症状群希望水平

A modified flexible spatiotemporal data fusion model

在线全文

学校读者我要写书评

暂无评论

Frontiers of Earth Science 2020年第3期14卷 601-614页

作者： Jia Tang Jingyu Zeng Li Zhang Rongrong Zhang jinghan Li Xingrong Li Jie zou Yue Zeng Zhanghua Xu Qianfeng Wang Qing Zhang Key Laboratory of Remote Sensing of Soil Erosion and Disaster Protection College of Environment and ResourcesFuzhou UniversityFuzhou 350116China Key Laboratory of Digital Earth Science Institute of Remote Sensing and Digital EarthChinese Academy of SciencesBeijing 100094China College of Geography and Tourism Anhui Normal UniversityWuhu 241000China College of Geomatics Shandong University of Science and TechnologyQingdao 266590China Spatial Information Research Center of Fujian Province Fuzhou UniversityFuzhou 350116China Joint Global Change Research Institute Pacific Northwest National Laboratory and University of MarylandCollege ParkMD20740USA

Remote sensing spatiotemporal fusion models blend multi-source images of different spatial resolutions to create synthetic images with high resolution and frequency,contributing to time series research where high quality observations are not available with sufficient ***,existing models are vulnerable to spatial heterogeneity and land cover changes,which are frequent in human-dominated *** obtain quality time series of satellite images in a human-dominated region,this study developed the Modified Flexible Spatial-temporal Data Fusion(MFSDAF)approach based on the Flexible Spatial-temporal Data Fusion(FSDAF)model by using the enhanced linear regression(ELR).Multiple experiments of various land cover change scenarios were conducted based on both actual and simulated satellite images,*** proposed MFSDAF model was validated by using the correlation coefficient(r),relative root mean square error(RRMSE),and structural similarity(SSIM),and was then compared with the Enhanced Spatial and Temporal Adaptive Reflectance Fusion Model(ESTARFM)and FSDAF *** show that in the presence of significant land cover change,MFSDAF showed a maximum increase in r,RRMSE,and SSIM of 0.0313,0.0109 and 0.049,respectively,compared to FSDAF,while ESTARFM performed best with less temporal difference of in the input *** conditions of stable landscape changes,the three performance statistics indicated a small advantage of MFSDAF over FSDAF,but were 0.0286,0.0102,0.0317 higher than for ESTARFM,*** showed greater accuracy of capturing subtle changes and created high-precision images from both actual and simulated satellite images.

关键词： MFSDAF enhanced linear regression land cover change heterogeneous time-series

矿物掺合料对硅酸盐水泥净浆氯离子结合能力的影响

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

建筑材料学报 2023年第6期26卷 571-578页

作者：汤昊源左晓宝邹欲晓刘婧涵南京理工大学理学院土木工程系江苏南京210094

以掺粉煤灰(FA)和粒化高炉矿渣粉(GGBS)的硅酸盐水泥净浆为研究对象,开展其在不同浓度NaCl溶液中的浸泡试验.通过硝酸银滴定、X射线衍射(XRD)和热力学模拟,分析了溶液中氯离子浓度和水泥净浆中各物相含量的变化特点.结果表明:GGBS和FA... 详细信息

以掺粉煤灰(FA)和粒化高炉矿渣粉(GGBS)的硅酸盐水泥净浆为研究对象,开展其在不同浓度NaCl溶液中的浸泡试验.通过硝酸银滴定、X射线衍射(XRD)和热力学模拟,分析了溶液中氯离子浓度和水泥净浆中各物相含量的变化特点.结果表明:GGBS和FA的掺入可降低溶液中氯离子浓度,提高水泥净浆的氯离子结合能力;且GGBS可提高水泥净浆中水化铝酸钙(AFm)相含量及其对氯离子的化学吸附能力;FA可提高水泥净浆中水化硅(铝)酸钙C-(A)-S-H凝胶的物理吸附能力,当FA掺量为40%时,其物理吸附能力达到最大.

关键词：粉煤灰粒化高炉矿渣粉复合水泥净浆氯离子结合能力热力学模拟

在线全文

学校读者我要写书评

暂无评论

探索高血糖的精细分型与精准治疗

中华糖尿病杂志 2023年第11期15卷 1031-1040页

作者：胡静涵郭妍米稼钰刘连勇邹大进海军军医大学(第二军医大学)基础医学院学员队上海200433 海军军医大学(第二军医大学)第一附属医院内分泌科上海200433 上海交通大学医学院附属仁济医院浦南分院内分泌代谢科上海200125

世界卫生组织糖尿病病因学分类系统(1999)是目前应用最广泛的分型系统,如果考虑生物标志物、基因型和遗传风险等因素,应将糖尿病进一步细分为更多类型,现有的糖尿病分型不能完全满足临床需要,需要更加简单有效、对临床治疗有直接指导意... 详细信息

世界卫生组织糖尿病病因学分类系统(1999)是目前应用最广泛的分型系统,如果考虑生物标志物、基因型和遗传风险等因素,应将糖尿病进一步细分为更多类型,现有的糖尿病分型不能完全满足临床需要,需要更加简单有效、对临床治疗有直接指导意义的糖尿病分类方法。该文梳理高血糖的定义及流行病学,对国内外目前已有的各种分型方法进行回顾总结,并在此基础上结合前期的临床研究结果和诊疗经验,提出一个基于现有分型法的"邹氏高血糖精细分型法",把高血糖分为应激性高血糖、糖尿病前期和糖尿病3种状态,再根据糖尿病的不同特征进行精细分型,以期为后续临床实现精准治疗提供参考。

关键词：糖尿病高血糖糖尿病前期糖尿病分型

在线全文

学校读者我要写书评

暂无评论

曝气式矿化垃圾反应器处理垃圾渗滤液

工业安全与环保 2017年第7期43卷 98-101页

作者：郭静晗孙晓杰邹雨竹赵孝芹桂林理工大学广西环境污染控制理论与技术重点实验室广西桂林541004 桂林理工大学广西岩溶地区水污染控制与用水安全保障协同创新中心广西桂林541004

构建曝气式矿化垃圾反应器,研究其对高水力负荷垃圾渗滤液的处理效果。结果表明,在水力负荷为70 L/(m^3垃圾·d),曝气量为0.744 m^3/(m^3垃圾·d)的条件下,进水渗滤液中COD_(Cr)、氨氮、总磷、总氮质量浓度分别为4 776~5 305,1 659~2 20... 详细信息

构建曝气式矿化垃圾反应器,研究其对高水力负荷垃圾渗滤液的处理效果。结果表明,在水力负荷为70 L/(m^3垃圾·d),曝气量为0.744 m^3/(m^3垃圾·d)的条件下,进水渗滤液中COD_(Cr)、氨氮、总磷、总氮质量浓度分别为4 776~5 305,1 659~2 200,15~22,2 115~2 578 mg/L时,COD_(Cr)、氨氮、总磷的平均去除率分别为75.2%,96.0%,89.0%。总氮去除率呈下降趋势,从56.6%降至16.1%,平均去除率为25.8%。

关键词：曝气矿化垃圾反应器垃圾渗滤液