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Highly stretchable and reliable graphene oxide- reinforced liquid gating membranes for tunable gas/liquid transport

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Microsystems & Nanoengineering 2020年第1期6卷 717-727页

作者： Wei Lv Zhizhi Sheng yinglin zhu Jing Liu Yi Lei Rongrong Zhang Xinyu Chen Xu Hou Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen University361005 XiamenChina State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen University361005 XiamenChina Collaborative Innovation Center of Chemistry for Energy Materials Xiamen University361005 XiamenChina

The ability of membrane technologies to dynamically tune the transport behavior for gases and liquids is critical for their *** various methods have been developed to improve membrane success,tradeoffs still exist among their properties,such as permeability,selectivity,fouling resistance,and stability,which can greatly affect the performance of *** elastomeric membrane designs can provide antifracture properties and flexibility;however,these designs still face certain challenges,such as low tensile strength and ***,researchers have not yet thoroughly developed membranes that can avoid fouling issues while realizing precise dynamic control over the transport *** this study,we show a versatile strategy for preparing graphene oxide-reinforced elastomeric liquid gating membranes that can finely modulate and dynamically tune the sorting of a wide range of gases and liquids under constant applied ***,the produced membranes exhibit antifouling properties and are adaptable to different length scales,pressures,and *** filling of graphene oxide in the thermoplastic polyurethane matrix enhances the composites through hydrogen *** and theoretical calculations are carried out to demonstrate the stability of our *** membrane exhibits good stretchability,recovery,and durability due to the elastic nature of the solid matrix and dynamic nature of the gating *** control over the transport of gases and liquids is achieved through our optimized interfacial design and controllable pore deformation,which is induced by mechanical *** strategy will create new opportunities for many applications,such as gas-involved chemical reactions,multiphase separation,microfluidics,multiphase microreactors,and particulate material synthesis.

关键词： transport fouling liquid

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园林植物害虫种类及防治技术

农业工程 2016年第3期6卷 125-126页

作者：朱英琳

园林植物害虫的防治是园林行业的重要工作之一。近年来,随着城市绿化面积的不断扩大,园林植物的虫害问题不断加剧,对城市生态环境造成了严重影响。介绍了园林植物常见的害虫种类及防治技术。

关键词：园林植物害虫防治技术

New insight into the origin and evolution of the flora and fauna of Hainan Island, China

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Science China Earth Sciences 2025年第1期68卷 52-61页

作者： Hua zhu Center for Integrative Conservation Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Yunnan International Joint Laboratory of Southeast Asia Biodiversity Conservation Yunnan Key Laboratory for the Conservation of Tropical Rainforests and Asian Elephants

The origin of the biota of Hainan Island, China, remains a fundamental scientific problem. Comparative studies on the biota, geological tectonics, and paleomagnetism proposed that during the Eocene, Hainan Island connected Vietnam and Guangxi, and then moved to the southeast to reach its present location. This review mainly discusses its biota origin from molecular phylogeny and palaeobotanical research. The formation and evolution of the biological groups of Hainan Island were identified via research on their genomes, phylogeny, and molecular biogeography. This research showed that the genera and species that appeared and diverged early in their evolution(i.e., before the Miocene) can be explained by the land connection between Hainan Island, Vietnam, and Guangxi during the Eocene-Oligocene. According to Southeast Asian tectonic theory, in the Middle Miocene(at about 15 million years ago), Hainan Island had moved to its present position. The population and genetic divergence of species with late divergence times(after 15 Ma) can be reasonably explained by the close proximity(or land connection) between Hainan Island and the Leizhou Peninsula, enabling genetic communication between Hainan Island and the Chinese mainland, but have exceptional cases. Conclusions have been obtained through palaeobotanical studies, showing that in the Eocene-Oligocene period, southwest China and Hainan Island had subtropical vegetation and flora. However, the fossil group in southeast China(in Maoming, near present-day Hainan Island) in the Late Eocene indicated a tropical rainforest vegetation and flora. This suggests that in the Paleogene, Hainan Island may have been located near or on the southwest border of Guangxi and northern Vietnam, rather than in its present location. The floristic division of the flora of Hainan Island basically presents a northeast-southwest inclined distribution pattern. This pattern can be explained by the counterclockwise rotation of Hainan Island during i

关键词： Molecular phylogeny Biogeography Paleobotany Origin of flora and fauna Hainan Island of China

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润滑脂中元素光谱分析前处理方法的优化研究

润滑与密封 2014年第2期39卷 115-118页

作者：朱映林凌英张洁华广州机械科学研究院有限公司设备状态检测研究所广东广州510700

研究电感耦合等离子体原子发射(ICP-AES)测定润滑脂方法的前处理步骤,改进ASTM D7303中的润滑脂灰化酸解步骤及试剂,提出一种润滑脂元素光谱分析前处理方法。采用改进方法处理润滑脂得到的元素Fe、Ca、Zn、P、Mo、Li等的光谱数据与标准... 详细信息

研究电感耦合等离子体原子发射(ICP-AES)测定润滑脂方法的前处理步骤,改进ASTM D7303中的润滑脂灰化酸解步骤及试剂,提出一种润滑脂元素光谱分析前处理方法。采用改进方法处理润滑脂得到的元素Fe、Ca、Zn、P、Mo、Li等的光谱数据与标准方法处理得到的数据一致,证明该方法可以作为监测润滑脂中元素含量的前处理方法。

关键词：电感耦合等离子体原子发射润滑脂灰化酸解

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虚拟仿真实验室智能诊断模型研究

实验技术与管理 2014年第9期31卷 109-113页

作者：丁鼎徐妲朱英琳王伟东北师范大学软件学院吉林长春130117

针对传统实验教学面临的困境和基于计算机技术构建的虚拟实验室存在的问题,提出了整合实验过程仿真模型、操作-响应模型、学生模型的虚拟实验自适应学习环境。分别对构建三者模型的关键要素:基于EOKDN的过程建模方法、操作诊断方法、学... 详细信息

针对传统实验教学面临的困境和基于计算机技术构建的虚拟实验室存在的问题,提出了整合实验过程仿真模型、操作-响应模型、学生模型的虚拟实验自适应学习环境。分别对构建三者模型的关键要素:基于EOKDN的过程建模方法、操作诊断方法、学生特征模型构建和数据获取方式进行了深入研究和说明。

关键词：虚拟实验过程建模学生模型 petri网智能诊断

Modification of Maxwell model for conductivity prediction of carbon nanotubes-filled polymer composites with tunneling effect

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 25-36页

作者： Jue zhu Longyuan LI Ningtao zhu Zhejiang Provincial Engineering Research Center for the Safety of Pressure Vessel and Pipeline Key Laboratory of Impact and Safety Engineering (Ningbo University) Ministry of Education School of Engineering Computing and Mathematics University of Plymouth Xi'an Zhanshi Testing & Engineering Co.Ltd.

Carbon nanotubes(CNTs) have garnered great attention in recent years due to their outstanding electrical, thermal, and mechanical properties. The incorporation of small amounts of CNTs in polymers can substantially improve the sensitivity of the polymer's electrical conductivity. This paper presents a modified Maxwell model to evaluate the electrical conductivity of CNTs-filled polymer composites by introducing a transition zone to account for the tunneling effect. In this modified Maxwell model, the CNTs-filled polymer composite is modeled as a three-phase composite, consisting of a matrix(polymer), inclusions(CNTs), and a transition zone(tunneling zone). The effective electrical conductivity(EEC) of the composite is calculated based on the volume fractions and electrical conductivities of the matrix, inclusions, and transition zone. The model's validity is confirmed through the use of available test data, which demonstrates its capability to accurately capture the nonlinear conductivity behavior observed in CNTs-polymer composites. This study offers valuable insights into the design of high-performance conductive polymer nanocomposites, and enhances the understanding of electrical conduction mechanisms in CNT-dispersed polymer composites.

关键词： Nanoclay

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热回收通风系统在犊牛舍的应用效果分析

农业工程学报 2020年第17期36卷 219-226页

作者：陈昭辉徐一洺陈泽鹏朱莹琳冯广军安捷刘继军中国农业大学动物科技学院北京100193 动物营养国家重点实验室北京100193 青岛新良牧农业科技有限公司青岛266000

为减少冷应激对犊牛健康的影响,降低冬季犊牛养殖中通风与保温的矛盾,该研究在新疆地区对牛舍热回收通风系统的通风效果及热回收性能进行了评价。试验舍采用2套相同的热回收通风系统进行通风,对照舍自然通风。试验结果表明:热回收通风... 详细信息

为减少冷应激对犊牛健康的影响,降低冬季犊牛养殖中通风与保温的矛盾,该研究在新疆地区对牛舍热回收通风系统的通风效果及热回收性能进行了评价。试验舍采用2套相同的热回收通风系统进行通风,对照舍自然通风。试验结果表明:热回收通风系统可使舍外进入舍内的新鲜空气温度平均提高10.15℃,日均CO2和NH3浓度分别显著降低173.15和0.63 mg/m3(P<0.05)。2套系统共可为试验舍提供通风量1097.83 m3/h,送风管小孔出风口的平均风速为2.45 m/s,风管始末端风速分别为2.76和2.34 m/s。该系统的热回收效率为76.17%,能效比为3.1。该系统可以保证良好舍内环境和较高的能量回收效率,缓解冬季犊牛生产中通风与保温的矛盾。

关键词：热回收通风纤维风管犊牛冷环境

Late Paleozoic to early Mesozoic volcanic-sedimentary history of the southeastern margin of the Central Asian Orogenic Belt: Timing of uplift of the Inner Mongolia paleo-uplift

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Science China Earth Sciences 2025年第1期68卷 297-309页

作者： Wenxing HAO Jin-Hui YANG Guang zhu State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences School of Resource and Environmental Engineering Hefei University of Technology

The Kulun region is located in the eastern Bainaimiao arc belt on the southeastern margin of the Central Asian Orogenic Belt(CAOB), adjacent to the North China Craton(NCC) to the south. This region records the closure of the PaleoAsian Ocean during the Paleozoic to early Mesozoic and is key to study the tectonic evolution of the northern margin of the *** conducted zircon U-Pb geochronology and Hf isotope analysis of volcanic-sedimentary and intrusive rocks in the Kulun region. The volcanic-sedimentary rocks were previously assigned an early Carboniferous age, but include volcanic rocks with ages of 267–266 Ma and sedimentary rocks with youngest detrital zircon age peaks of 265–244 Ma, which were intruded by a granite with an age of 242 Ma. This indicates that these rocks are actually middle Permian to Middle Triassic in age(267–242Ma) and correspond to the Qingfengshan and Liujiagou formations. Moreover, two volcanic rock samples have high εHf(t) values(+1.6 to +16.1) and relatively young two-stage Hf model ages(1095–327 Ma), indicating their sources associated with the CAOB. The age spectra and Hf isotopic characteristics of detrital zircons from the sedimentary rocks suggest that, during the middle Permian to Middle Triassic, the sedimentary provenance in the Kulun region was mainly the CAOB. However, by the Early Jurassic, the provenance changed to the NCC(i.e., the Inner Mongolia Paleo-uplift, IMPU). This result, combined with the development of a series of conglomerates on the northern margin of the NCC in the Late Triassic(i.e., Xingshikou, Xiaoyingzi,and Xiaohekou formations), indicates the Kulun region experienced an abrupt change in paleogeography during the Late Triassic, with the IMPU undergoing significant uplift and thus becoming the main sediment source in the Kulun region. Based on the Late Triassic alkaline igneous belt(235–215 Ma) in the IMPU, we speculate that this uplift was caused by detachment of the southward-subducting Paleo-Asian oceanic

关键词： Central Asian Orogenic Belt the North China Craton Zircon geochronology Hf isotopes Inner Mongolia Paleo-uplift

Cyano migration-mediated radical-polar crossover cyclopropanation

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Science China Chemistry 2025年第1期68卷 241-248页

作者： Ziqiang Wang Yasu Chen Jie Li Chen zhu Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials ScienceSoochow University Frontiers Science Center for Transformative Molecules Zhangjiang Institute for Advanced Study and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University

We report a novel cyano migration-mediated radical-polar crossover process, whereby both the sulfonylcyanation of aliphatic alkenes and the formation of cyclopropanes are concurrently achieved. This transformation yields a diverse array of multisubstituted cyclopropanes under mild photocatalytic conditions. Mechanistic studies elucidate that the reaction proceeds via intramolecular nucleophilic substitution, leading to the formation of the cyclopropane derivatives.

关键词： cyclopropanation cyano migration radical-polar crossover radical reactions