检索结果-南通市图书馆

Thermo-kinetic connectivity by integrating thermo-kinetic correlation and generalized stability

Journal of Materials Science & Technology 2022年第32期127卷 225-235页

作者： Yuqing He Shaojie Song Jinglian Du Haoran Peng Zhigang Ding Huaiyu Hou linke Huang Yongchang Liu Feng Liu State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Analytical&Testing Center Northwestern Polytechnical UniversityXi’an 710072China School of Materials and Chemical Engineering Xi’an Technological UniversityXi’an 710021China Nano and Heterogeneous Materials Center School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China State Key Lab of Hydraulic Engineering Simulation and Safety School of Materials Science&EngineeringTianjin UniversityTianjin 300072China

Designing structured materials with optimized mechanical properties generally focuses on engineering microstructures,which are closely determined by the processing routes,such as phase transformations(PTs)and plastic deformations(PDs).Both PTs and PDs follow inherent trade-off relation between thermodynamic driving force ΔG and kinetic energy barrier Q,i.e.,so-called thermo-kinetic *** analyzing nucleation and growth and proposing a conception of negative driving force integrating strain energy,interface energy and any kind of energy that equivalently inhibits the PT itself,ΔG^(S),unified expressions for the thermo-kinetic correlation and generalized stability(GS)were derived for three kinds of PTs,i.e.,diffusive PTs with simultaneously decreasedΔG and increased Q,diffusive PTs with simultaneously increasedΔG and decreased Q,and displacive PTs with simultaneously increased ΔG and decreased *** leads to so-called thermo-kinetic connectivity by integrating the thermo-kinetic correlation and the GS,where,by application in typical PTs,it was clearly shown,a criterion of high ΔG-high GS can be predicted by modulating chemical driving force,negative driving force and kinetic energy barrier for diffusion or *** thermo-kinetic connectivity,analogous procedure for dislocation evolution upon PDs was performed,and materials design in terms of the highΔG-high GS criterion was discussed and prospected.

关键词： Thermo-kinetic correlation Negative driving force Generalized stability Thermo-kinetic connectivity

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

Distribution and sources of polycyclic aromatic hydrocarbons in the water column of Kongsfjorden, Arctic

引用

Journal of Environmental Sciences 2020年第11期32卷 186-193页

作者： Ruijing Li Hui Gao Zhongqiang Ji Shuaichen Jin linke Ge Humin Zong Liping Jiao Zhifeng Zhang Guangshui Na National Marine Environmental Monitoring Center Dalian 116023China Key Laboratory of Marine Ecosystems and Biogeochemistry Second Institute of OceanographyMinistry of Nature ResourcesHangzhou 310012China Key Laboratory of Ocean-Atmospheric Chemistry and Global Change Third Institute of OceanographyMinistry of Nature ResourcesXiamen 361005China Hainan Tropical Ocean University Key Laboratory of Utilization and Conservation for Tropical Marine BioresourcesMinistry of EducationChina

Kongsfjorden is known for its characteristic multi-layer water mass formed by the convergence of freshwaters from nearby glaciers and rivers and saline water from the Atlantic and *** distribution of polycyclic aromatic hydrocarbons(PAHs)in the water column of Kongsfjorden was investigated and their potential sources were *** total concentrations of 16 PAHs in the surface seawater and river water were in the range of 33.4-79.8 ng/L(mean 48.5 ng/L)and 2.3-201.4 ng/L(mean 126.1 ng/L),***,PAHs were mainly concentrated around river estuaries and the glacier front in the dissolved ***,the PAHs in the particulate phase followed surface-enrichment and depth-depletion patterns in most stations,with the maximum concentration found at 50 m depth in the central area of *** compositions of PAHs in seawater and rivers were similar,with two-ring and tricyclic PAHs comprising the majority of the dissolved and particulate *** found in Kongsfjorden waters appeared to be derived from multiple sources such as petroleum and coal *** in the bay mouth of Kongsfjorden were mainly introduced by the West Spitsbergen Current and the Arctic waters,while in the inner bay,atmospheric deposition and local sources were the major *** distribution of PAHs was mainly attributed to the suspended particulate distribution.

关键词： PAHs Distribution Source Water mass Kongsfjorden

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

Wavelength and sensitivity tunable long period gratings fabricated in fluid-cladding microfibers

引用

Chinese Physics B 2022年第1期31卷 299-304页

作者： Wa Jin linke Zhang Xiang Zhang Ming Xu Weihong Bi Yuefeng Qi Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province Qin Huangdao 066004China School of Information Science and Engineering Yanshan UniversityQin Huangdao 066004China

We report the fabrication of long period gratings in fluid-cladding microfibers by directly focusing a femtosecond laser beam on the microfibers surface to induce periodical modification a long one side of the microfibers.A long period grating is fabricated in a water-cladding microfiber with a diameter of~5μm,which demonstrates a resonant attenuation of 28.53 dB at wavelength of 1588.1 nm with 10 *** water cladding is changed to be refractive index oil of n=1.33 and alcohol solution with concentration of 5%,the resonance wavelength shifts to 1575.1 nm with resonant attenuation of 24.91 dB and 1594.1 nm with resonant attenuation of 35.9 dB,*** long period grating demonstrates different temperature sensitivities of-0.524 nm/℃,-0.767 nm/℃and-1.316 nm/℃for water,alcohol solution and refractive index oil cladding microfibers,respectively,which means the alterable liquid cladding allows the availability of tunable wavelength and *** fluid-cladding protects the microfibers from external disturbance and contamination and allows more flexibility in controlling the transmission property and sensing characteristics of long period gratings,which can be used as fiber devices and sensors for chemical,biological,and environmental applications.

关键词： fluid-cladding microfiber long-period grating temperature

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

基于行为转变理论的肺康复运动方案在肺癌化疗患者中的应用效果

引用

中国医药导报 2024年第6期21卷 176-180页

作者：吕利杰陈玉红叶亮吴林珂林征南京医科大学附属南京医院南京市第一医院呼吸内科江苏南京210006 南京医科大学附属南京医院南京市第一医院护理部江苏南京210006 南京医科大学护理学院南京医科大学第一附属医院护理部江苏南京210029

目的探讨基于行为转变理论的肺康复运动方案在肺癌化疗患者中的应用效果。方法选取江苏省南京市第一医院呼吸内科2022年7月至2023年3月收治的肺癌化疗患者80例,按入院时间顺序将其分为对照组和试验组,各40例。对照组予常规肺康复运动... 详细信息

目的探讨基于行为转变理论的肺康复运动方案在肺癌化疗患者中的应用效果。方法选取江苏省南京市第一医院呼吸内科2022年7月至2023年3月收治的肺癌化疗患者80例,按入院时间顺序将其分为对照组和试验组,各40例。对照组予常规肺康复运动指导,试验组予基于行为转变理论的肺康复运动指导。比较两组肺康复运动依从性评分、运动耐力及生活质量。结果干预第12周,两组运动依从性得分高于干预第4周,且试验组高于对照组,差异有统计学意义(P0.05)。干预后,两组生活质量评分高于干预前,且试验组高于对照组,差异有统计学意义(P<0.05)。结论基于行为转变理论的肺康复运动依从性干预方案,有利于提高患者运动依从性,增强运动耐力,改善患者生活质量。

关键词：依从性化疗患者肺康复行为转变理论

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

Distribution characteristics and indicator significance of Dechloranes in multi-matrices at Ny-lesund in the Arctic

引用

Journal of Environmental Sciences 2015年第2期27卷 8-13页

作者： Guangshui Na Wei Wei Shiyao Zhou Hui Gao Xindong Ma Lina Qiu linke Ge Chenguang Bao Ziwei Yao Key Laboratory for Ecological Environment in Coastal Areas National Marine Environmental Monitoring Center Research Center for Eco-environmental Sciences Chinese Academy of Sciences School of Chemistry and Chemical Engineering Liaoning Normal University Dalian Institute of Science & Technology School of Biological Technology Dalian Polytechnic University

In recent years, Dechloranes have been widely detected in the environment around the ***, understanding and knowledge of Dechloranes in remote regions, such as the Arctic,remain lacking. Therefore, the concentrations of 5 Dechloranes in surface seawater, sediment,soil, moss, and dung collected from Ny-lesund in the Arctic were measured with the concentrations 93 pg/L, 342, 325, 1.4, and 258 pg/g, respectively, which were much lower than those in Asian and European regions. The mean ratios of anti-Dechlorane Plus（DP） to total DP（fanti） in seawater, sediment, soil, moss, dung, and atmospheric samples were 0.36, 0.21, 0.18,0.27, 0.66, and 0.43, respectively. Results suggested that the main source of DP in seawater,sediment, soil, and moss was long-range atmospheric transport. However, the ratio identified in dung was different, for which the migration behavior of the organism is probably the main source of DP.

关键词： Dechloranes Arctic Multi-matrices Distribution characteristic Ratio Source analysis

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

船用大功率氢燃料电池的液氢供氢系统数值仿真

引用

北京石油化工学院学报 2024年第1期32卷 20-24页

作者：兰林柯杜文海邹玉巩宁峰聂连升北京石油化工学院机械工程学院氢能研究中心北京102617 北京海德利森科技有限公司北京102699

相较于高压气态储氢、固态储氢等储氢方式,低温液态储氢具有有效储氢密度大、运输成本低、汽化纯度高和储运压力低等优势,因此对大功率燃料电池而言是最有潜力的一种储氢方式。利用Fluent软件对某船用大功率氢燃料电池的液氢供氢系统进... 详细信息

相较于高压气态储氢、固态储氢等储氢方式,低温液态储氢具有有效储氢密度大、运输成本低、汽化纯度高和储运压力低等优势,因此对大功率燃料电池而言是最有潜力的一种储氢方式。利用Fluent软件对某船用大功率氢燃料电池的液氢供氢系统进行非定常计算,研究了使罐内液氢在给定时间内完全排出所需的最小气氢充注速度。数值模拟结果表明:在高温气氢充注到液氢罐过程中,由于热量聚集导致入口处存在局部高温,氢气进入液氢罐后沿水平方向流动,在重力与壁面作用下向下方流动,通过与罐内低温流体的对流换热作用,引起不同区域内的流体密度发生改变,从而使气氢与液氢分别产生涡旋;随着液氢罐气氢入口流速线性增加,液氢罐排空所需时间减小,但减小幅度随着入口速度的增加而降低。

关键词：液氢燃料电池数值模拟两相流动非定常流动

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

四逆散调控GSK-3β/A20/C/EBPβ抑制小胶质细胞激活改善抑郁模型小鼠抑郁样行为

引用

中国实验方剂学杂志 2024年第12期30卷 16-23页

作者：陈虹云杨东英廖回庆曾妍妍潘琳可白莎莎邓迪史亚飞张荣杨蕾广州中医药大学中药学院广州510006

目的:探讨四逆散通过调控糖原合成酶激酶-3β(GSK-3β)/肿瘤坏死因子-α诱导蛋白3(A20)/CCAAT增强子结合蛋白β(C/EBPβ)抑制小胶质细胞激活发挥抗抑郁作用。方法:将72只雄性C57/6J小鼠随机分出正常组、模型组、氟西汀组(5.0 mg·kg^(-... 详细信息

目的:探讨四逆散通过调控糖原合成酶激酶-3β(GSK-3β)/肿瘤坏死因子-α诱导蛋白3(A20)/CCAAT增强子结合蛋白β(C/EBPβ)抑制小胶质细胞激活发挥抗抑郁作用。方法:将72只雄性C57/6J小鼠随机分出正常组、模型组、氟西汀组(5.0 mg·kg^(-1))、四逆散低、中、高剂量组(4.9、9.8、19.6 g·kg^(-1)),每组12只。适应性喂养1周后,采用慢性不可预知温和应激(CUMS)建立抑郁模型,第5周开始进行药物治疗4周。第9周进行行为学实验,包括蔗糖偏好实验、旷场实验、高架十字迷宫实验和强迫游泳实验。采用蛋白免疫印迹法(Western blot)检测皮质白细胞介素-1β(IL-1β)、白细胞介素-6(IL-6)、一氧化氮合酶(iNOS)炎症蛋白的表达水平和GSK-3β、A20、C/EBPβ的表达水平。利用免疫荧光法检测皮质小胶质细胞的M1型极化标志物离子钙结合衔接分子1(Iba1)和巨噬细胞抗原(CD68)的荧光表达。结果:CUMS造模8周后,与正常组比较,模型组小鼠蔗糖偏好率显著降低(P<0.01),旷场实验中央区域活动显著减少(P<0.01),在高架十字迷宫实验开臂区域的活动明显减少(P<0.05),强迫游泳的不动时间显著增加(P<0.01);炎症蛋白IL-1β、IL-6、iNOS的表达水平显著升高(P<0.01),Iba1和CD68的荧光共定位的指数升高(P<0.05);GSK-3β蛋白表达水平升高(P<0.05),C/EBPβ蛋白表达水平显著升高(P<0.01)。药物干预4周后,与模型组比较,四逆散组小鼠糖水偏好率显著提高(P<0.01),旷场实验和高架十字迷宫实验中在中央区域和开臂区域的活动明显增加(P<0.05),四逆散中、高剂量组小鼠在强迫游泳实验中不动时间显著减少(P<0.01);IL-1β、IL-6、iNOS的蛋白表达水平明显下降(P<0.05),四逆散高剂量组Iba1和CD68的荧光共定位的指数明显下降(P<0.05);四逆散中、高剂量组GSK-3β、C/EBPβ的蛋白表达水平显著下降(P<0.01),A20的蛋白表达显著上调(P<0.01)。结论:四逆散抗抑郁作用与调控GSK-3β/A20/C/EBPβ蛋白的表达,抑制小胶质细胞M1型激活有关。

关键词：抑郁症慢性不可预知温和应激(CUMS) 小胶质细胞四逆散神经炎症

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

The Plastid-Localized NAD-Dependent Malate Dehydrogenase Is Crucial for Energy Homeostasis in Developing Arabidopsis thaliana Seeds

引用

Molecular Plant 2014年第1期7卷 170-186页

作者： Jennifer Selinski Nicolas Konig Benedikt Wellmeyer Guy T. Hanke Vera linke H. Ekkehard Neuhaus Renate Scheibe Department of Plant Physiology FB 5 University of Osnabrueck D-49069 Osnabrueck Germany Department of Plant Physiology FB Biology TU Kaiserslautern D-67663 Kaiserslautern Germany

In the absence of photosynthesis, ATP is imported into chloroplasts and non-green plastids by ATP/ADP transporters or formed during glycolysis, the latter requiring continuous regeneration of NAD＋, supplied by the plastidial isoform of NAD-MDH. During screening for T-DNA insertion mutants in the plNAD-MDH gene of Arabidopsis, only heterozygous plants could be isolated and homozygous knockout mutants grew only after complementation. These heterozygous plants show higher transcript levels of an alternative NAD＋-regenerating enzyme, NADH-GOGAT, and, remarkably, improved growth when ammonium is the sole N-source. In situ hybridization and GUS-histochemical stain- ing revealed that plNAD-MDH was particularly abundant in male and female gametophytes. Knockout plNAD-MDH pollen exhibit impaired tube growth in vitro, which can be overcome by adding the substrates of NADH-GOGAT. In vivo, knockout pollen is able to fertilize the egg cell. Young siliques of selfed heterozygous plants contain both green and white seeds corresponding to wild-type/heterozygous （green） and homozygous knockout mutants （white） in a （1：2）：1 ratio. Embryos of the homozygous knockout seeds only reached the globular stage, did not green, and developed to tiny wrinkled seeds. Complementation with the gene under the native promoter rescued this defect, and all seeds developed as wild-type. This suggests that a blocked major physiological process in plNAD-MDH mutants stops both embryo and endosperm development, thus avoiding assimilate investment in compromised offspring.

关键词： malate valve plastidial glycolysis ammonium assimilation NADH-GOGAT redox-balance embryo lethality.

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

Pd/silicalite-1: An highly active catalyst for the oxidative removal of toluene

引用

Journal of Environmental Sciences 2022年第6期34卷 209-219页

作者： linke Wu Jiguang Deng Yuxi Liu Lin Jing Xiaohui Yu Xing Zhang Ruyi Gao Wenbo Pei Xiuqing Hao Ali Rastegarpanah Hongxing Dai Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution ControlKey Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaLaboratory of Catalysis Chemistry and NanoscienceDepartment of Environmental Chemical EngineeringSchool of Environmental and Chemical EngineeringFaculty of Environment and LifeBeijing University of TechnologyBeijing 100124China

Catalytic combustion is thought as an efficient and economic pathway to remove volatile organic compounds, and its critical issue is the development of high-performance catalytic materials. In this work, we used the in situ synthesis method to prepare the silicalite-1(S-1)-supported Pd nanoparticles(NPs). It is found that the as-prepared catalysts displayed a hexagonal prism morphology and a surface area of 390-440 m^(2)/g. The sample(0.28Pd/S-1-H)derived after reduction at 500°C in 10 vol% H_(2)showed the best catalytic activity for toluene combustion(T50%= 180℃ and T90%= 189℃ at a space velocity of 40,000 m L/(g·hr), turnover frequency(TOFPd) at 160℃ = 3.46 × 10^(-3)sec^(-1), and specific reaction rate at 160℃ = 63.8μmol/(gPd·sec)), with the apparent activation energy(41 k J/mol) obtained over the bestperforming 0.28Pd/S-1-H sample being much lower than those(51-70 k J/mol) obtained over the other samples(0.28Pd/S-1-A derived from calcination at 500℃ in air, 0.26Pd/S-1-im derived from the impregnation route, and 0.27Pd/ZSM-5-H prepared after reduction at 500℃ in 10 vol% H_(2)). Furthermore, the 0.28Pd/S-1-H sample possessed good thermal stability and its partial deactivation due to CO_(2) or H_(2)O introduction was reversible, but SO_(2) addition resulted in an irreversible deactivation. The possible pathways of toluene oxidation over 0.28Pd/S-1-H was toluene → p-methylbenzoquinone → maleic anhydride, benzoic acid, benzaldehyde → carbon dioxide and water. We conclude that the good dispersion of Pd NPs, high adsorption oxygen species concentration, large toluene adsorption capacity, strong acidity,and more Pd~0 species were responsible for the good catalytic performance of 0.28Pd/S-1-H.

关键词： Silicalite-1 Hexagonal prism shape Supported palladium catalyst Volatile organic compound Toluene combustion

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

谁是大英雄——美国十年十大英雄片再回首

引用

电影文学 2003年第2期 19-21页

作者： linke

铁幕是英雄的天地,美国好莱坞更是制造英雄的最大产地。十年来,多少英雄走上银幕,又沉淀在我们模糊的记忆中。

关键词：导演美国美利坚合众国北美洲

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

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：