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Journal of Thermal Science 2022年第4期31卷 1084-1093页

作者： LI fan LI Haiyang WANG Jun XIA guodong HWANG Gisuk MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation Beijing Key Laboratory of Heat Transfer and Energy ConversionBeijing University of TechnologyBeijing 100124China Department of Mechanical Engineering Wichita State University Wichita KS 67260USA

In this study,by using the nonequilibrium molecular dynamics and the kinetic theory,we examine the tailored nanoscale thermal transport via a gas-filled nanogap structure with mechanically-controllable nanopillars in one surface only,i.e.,changing nanopillar *** is found that both the thermal rectification and negative differential thermal resistance(NDTR)effects can be substantially enhanced by controlling the nanopillar *** maximum thermal rectification ratio can reach 340%and the△T range with NDTR can be significantly enlarged,which can be attributed to the tailored asymmetric thermal resistance via controlled adsorption in height-changing nanopillars,especially at a large temperature *** tunable thermal rectification and NDTR mechanisms provide insights for the design of thermal management systems.

关键词： thermal rectification negative differential thermal resistance kinetic theory nanopillars

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薜荔的开发前景及研究现状

南方林业科学 2016年第6期44卷 54-57,73页

作者：秦爱文樊国栋占志勇黄建建江西省林业科技推广总站江西南昌330038 永新县林业局江西永新343400 江西省林业科学院江西南昌330013

薜荔作为我国传统的中药材,还兼具食用和生态价值,是一种开发利用前景极为广阔的藤本植物。但由于其自然资源的零散分布,薜荔仅因药用功效而在一定的专业领域内被人们所熟知,社会认知度不够高,限制了薜荔产业发展。为改善这一现状,本文... 详细信息

薜荔作为我国传统的中药材,还兼具食用和生态价值,是一种开发利用前景极为广阔的藤本植物。但由于其自然资源的零散分布,薜荔仅因药用功效而在一定的专业领域内被人们所熟知,社会认知度不够高,限制了薜荔产业发展。为改善这一现状,本文以薜荔的药用价值、食用价值和生态价值为基础,详细论述其开发利用前景,以期吸引更多的资金来奠定其产业发展的物质基础;概括总结我国薜荔的研究现状,为科研人员进行后续的深入研究提供参考,为薜荔产业发展奠定技术基础。

关键词：薜荔开发利用研究现状

耐火材料的气孔特性与物理性能相关性的研究进展

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陶瓷学报 2018年第3期39卷 265-271页

作者：郭童双邓承继祝洪喜丁军余超宋云飞樊国栋冷光辉武汉科技大学省部共建耐火材料与冶金国家重点实验室湖北武汉430081 河南东大高温节能材料有限公司河南鹤壁458030

气孔作为耐火材料显微结构的重要组成部分,对材料的物理性能有着重要的影响。本文主要介绍了气孔率、气孔孔径分布、气孔形状等气孔特性,以及对材料力学性能、热学性能的影响,主要包括强度、导热系数等方面的研究进展。在此基础上对现... 详细信息

气孔作为耐火材料显微结构的重要组成部分,对材料的物理性能有着重要的影响。本文主要介绍了气孔率、气孔孔径分布、气孔形状等气孔特性,以及对材料力学性能、热学性能的影响,主要包括强度、导热系数等方面的研究进展。在此基础上对现有研究中存在的主要问题进行了总结,为气孔特性与耐火材料物理性能相关性的后续研究提供了相关的理论依据。

关键词：气孔特性耐火材料力学性能热学性能

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2250热轧油膜系统优化调试

冶金设备 2009年第6期 75-77,29页

作者：刘文斌赵久梁朱俊祥樊国栋首钢迁安钢铁公司热轧分厂河北迁安064404

分析了迁钢2250热轧精轧机组油膜润滑系统在生产中由于压力不稳定,造成连轧机意外停车故障,提出油膜系统设定压力优化和自动化控制程序优化方案,实施后取得了较好的效果。

关键词：热连轧油膜系统优化调试

In vivo mechanical study of helical cardiac pacing electrode interacting with canine myocardium

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Acta Mechanica Sinica 2007年第3期23卷 275-280页

作者： Xiangming Zhang Nianke Ma Hualin fan guodong Niu Wei Yang Department of Engineering Mechanics Tsinghua University Beijing 100084 China Fuwai Angiocardiopathy Hospital Beijing 100037 China Zhejiang University Hangzhou 310027 China

Cardiac pacing is a medical device to help human to overcome arrhythmia and to recover the regular beats of heart. A helical configuration of electrode tip is a new type of cardiac pacing lead distal tip. The helical electrode attaches itself to the desired site of heart by screwing its helical tip into the myocardium. In vivo experiments on anesthetized dogs were carried out to measure the acute interactions between helical electrode and myocardium during screw-in and pull-out processes. These data would be helpful for electrode tip design and electrode/myocardium adherence safety evaluation. They also provide reliability data for clinical site choice of human heart to implant and to fix the pacing lead. A special design of the helical tip using strain gauges is instrumented for the measurement of the screw-in and pull-out forces. We obtained the data of screw-in torques and pull-out forces for five different types of helical electrodes at nine designed sites on ten canine hearts. The results indicate that the screw-in torques increased steplike while the torque-time curves presente saw-tooth fashion. The maximum torque has a range of 0.3-1.9 Nmm. Obvious differences are observed for different types of helical tips and for different test sites. Large pull-out forces are frequently obtained at epicardium of left ventricle and right ventricle lateral wall, and the forces obtained at right ventricle apex and outflow tract of right ventricle are normally small. The differences in pull-out forces are dictated by the geometrical configuration of helix and regional structures of heart muscle.

关键词： Cardiac pacing Helical electrode Acute Interactions Myocardium

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免蒸养混凝土技术发展现状综述

新型建筑材料 2024年第5期51卷 52-57,82页

作者：王恒范国栋夏京亮王晶冷发光路珏中国路桥工程有限责任公司北京100013 中国建筑科学研究院有限公司北京100013

在混凝土工程质量和低碳可持续发展的要求下,免蒸养混凝土技术应运而生。首先总结目前发展的免蒸养混凝土技术,其中,早强免蒸养以早强组分促进Ca(OH)_(2)生产,而CO_(2)矿化技术促进水泥熟料中C_(3)S和C_(2)S反应,此外,微波养护和太阳能... 详细信息

在混凝土工程质量和低碳可持续发展的要求下,免蒸养混凝土技术应运而生。首先总结目前发展的免蒸养混凝土技术,其中,早强免蒸养以早强组分促进Ca(OH)_(2)生产,而CO_(2)矿化技术促进水泥熟料中C_(3)S和C_(2)S反应,此外,微波养护和太阳能养护技术以低碳高效的升温方式达到混凝土免蒸养的目的;对比上述免蒸养技术的国内外研究成果和工程应用发现,早强免蒸养技术成熟应用广泛,CO_(2)矿化是目前研究和发展重点,微波和太阳能养护虽然有设备和地区局限性,但都因为较好的低碳效益具有一定应用前景;最后分析了免蒸养混凝土技术在特殊环境、固废/气协同以及技术可靠性方面存在的问题,对免蒸养混凝土技术的发展趋势作出展望,期望从养护工艺角度为混凝土可持续发展提供参考。

关键词：混凝土早强剂 CO_(2)矿化微波固化太阳能养护

Hydrophilic modification of poly(aryl sulfone) membrane materials toward highly-efficient environmental remediation

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Frontiers of Chemical Science and Engineering 2022年第5期16卷 614-633页

作者： fan Yang Junhui Huang Lijun Deng Yanqiu Zhang guodong Dang Lu Shao MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemical Engineering and TechnologyState Key Laboratory of Urban Water Resource and Environment(SKLUWRE)Harbin Institute of TechnologyHarbin 150001China School of Environments Harbin Institute of TechnologyHarbin 150009China Shandong Horan Super Engineering Plastics Co. Ltd.Weihai 264200China

Poly(aryl sulfone)as a typical membrane material has been widely used due to excellent mechanical,chemical and thermal ***,the inherent hydrophobicity of poly(aryl sulfone)based membranes bears with the fouling issue during applications,which makes the membrane tending to adsorb contaminants on the surface so as to result in decreased separation performance and *** this critical review,we give a comprehensive overview on characterizations of hydrophilic membrane and diverse hydrophilic modification approaches of poly(aryl sulfone)membranes,predominantly including bulky,blending and surface modification *** discussions on the different modification methods have been provided ***,focusing on modification methods and performance of modified membranes,the related mechanisms for the performance enhancement are discussed *** last,the perspectives are provided to guide the future directions to develop novel technology to manipulate the hydrophilicity of poly(aryl sulfone)membranes toward diverse practical and multifunctional applications.

关键词： poly(aryl sulfone) membrane separations modification hydrophilicity water treatment

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低成本铜-石墨烯复合导电胶的性能研究

涂料工业 2022年第8期52卷 50-55页

作者：刘佳娜王鹏飞刘威杨润田周虎童晓峰范国栋黄立志株洲飞鹿高新材料技术股份有限公司湖南株洲412000 中国科学院山西煤炭化学研究所太原030001 厦门大学物理科学与技术学院福建厦门361000

本文以环氧树脂和超支化环氧树脂共混物作为基体,低相对分子质量改性聚酰胺作为固化剂,树枝状和球状混合铜粉为主要导电填料,石墨烯作为填充导电填料,制备出导电性、粘接性、耐老化性优异的导电胶。研究结果表明:超支化树脂质量分数30%... 详细信息

本文以环氧树脂和超支化环氧树脂共混物作为基体,低相对分子质量改性聚酰胺作为固化剂,树枝状和球状混合铜粉为主要导电填料,石墨烯作为填充导电填料,制备出导电性、粘接性、耐老化性优异的导电胶。研究结果表明:超支化树脂质量分数30%,环氧基和活泼氢物质的量比为1,添加70%铜粉(其中树枝状铜粉质量分数为70%),添加0.5%石墨烯,导电胶的粘接强度最大(13.5 MPa)、体积电阻率最低(1.88×10^(-4)Ω·cm)。在恒定温度85℃、相对湿度85%环境老化1000 h后,导电胶的导电性能及附着力降低均在10%以内,稳定性较好。综合来看,石墨烯的加入不仅优化了铜导电胶的性能,还极大优化了导电胶的表面效果。

关键词：导电胶环氧树脂超支化树脂球形铜粉树枝状铜粉石墨烯

三维电法勘探不规则网数据采集在华南沿海地区的尝试

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石化技术 2022年第1期29卷 42-43页

作者：雷闯陈志强范国栋王友胜陈孝雄中石化石油工程地球物理有限公司地理地质信息勘查分公司(原江汉分公司) 湖北潜江433100

从野外勘探采集布设方式出发,对沿海地区天然场电法勘探进行了不规则网观测尝试,在施工时效上寻求突破以求更好的契合市场需求。

关键词：三维电法勘探不规则网数据采集华南沿海地区

Two-dimensional perovskite capping layer for stable and efficient tin-lead perovskite solar cells

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Science China Chemistry 2019年第5期62卷 629-636页

作者： Jin Yuan Yuanzhi Jiang Tingwei He guodong Shi Zixiong fan Mingjian Yuan Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of ChemistryNankai University Renewable Energy Conversion and Storage Center Nankai University

Mixed tin-lead iodide perovskites exhibit the characteristics of low toxicity and improved light harvesting ability up to nearinfrared(NIR) spectral region, making them as an attractive alternative for traditional lead based perovskites. However, the performance of lead-based perovskites solar cells is still far inferior to their lead analogues owing to the unavoidable oxidation of Sn^(2+)to Sn^(4+). Here we introduced two-dimensional(2D) perovskite on the top of three dimensional(3D) perovskite film as a capping layer to reduce the self-oxidation, and thus improved the device stability. 2D capping layer was then confirmed by X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS) analysis. The existence of the 2D protecting thin layer significantly reduce the spontaneous Sn^(2+)oxidation, thus improve the device performance and reduce the hysteresis. The phenomena could be ascribed to the improved charge extraction efficiency causing by prohibited nonradiative recombination. On top of this, the photovoltaic devices based on conventional-structure configuration were fabricated. Taking advantage of the 2D capping layer, 2D/3D hybrid perovskite photovoltaic devices achieve a open-circuit voltage(Voc) of 0.77 V with short circuit current density(Jsc) of 26.60 mA cm^(-2), delivering the best-performing power conversion efficiency of 15.5%. Moreover, the 2D/3D perovskite devices maintained 60% its initial efficiency after 40 h exposed in air(humidity around 30%, temperature 22 °C),while 3D perovskite-based devices completely failed.

关键词： two-dimensional perovskites tin-lead perovskites 2D/3D stability