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超疏水纳米涂层技术研究进展及应用

化工进展 2024年第8期43卷 4450-4463页

作者：任国瑜妥云郑文杰谯泽庭任壮壮赵娅莉尚军飞陈晓东高祥虎榆林学院化学与化工学院陕西榆林719000 陕西榆能精细化工材料有限公司陕西榆林719000 中国科学院兰州化学物理研究所清洁能源化学与材料实验室甘肃兰州730000

受自然界荷叶、玫瑰花瓣等植物超疏水现象启发,超疏水涂层在自清洁、油水分离、防冰等领域被广泛应用。然而,传统超疏水涂层依赖于其表面微观粗糙结构和特殊涂层材料,制备工艺复杂,耐久性差,防腐蚀性能不足。超疏水纳米涂层由于其独特... 详细信息

受自然界荷叶、玫瑰花瓣等植物超疏水现象启发,超疏水涂层在自清洁、油水分离、防冰等领域被广泛应用。然而,传统超疏水涂层依赖于其表面微观粗糙结构和特殊涂层材料,制备工艺复杂,耐久性差,防腐蚀性能不足。超疏水纳米涂层由于其独特的形貌和功能,使超疏水涂层变得多功能、通用、耐用、高效。本文综述了近些年来不同纳米材料超疏水涂层的设计与制备,针对不同超疏水纳米涂层的优缺点进行了评述,并简述了其在各个领域的潜在应用,如防菌、传感器、微流体、催化等。最后,本文指出了关于使用纳米技术的超疏水涂层的最新发展和未来趋势,通过对其新颖的制备策略和对其独特性质的研究为该领域的研究人员提供一定的理论和技术参考,推进超疏水纳米涂层在诸多领域的应用。

关键词：粗糙结构超疏水纳米涂层耐久性防腐蚀纳米材料传感器微流体催化

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基于缓存的卫星传输性能优化策略

太赫兹科学与电子信息学报 2024年第9期22卷 983-991页

作者：陆涣冰任壮壮丁晓进张更新南京邮电大学物联网学院江苏南京210003 南京邮电大学通信与信息工程学院江苏南京210003

传统卫星透明转发模式在新型星地网络下会导致巨大的时延。为提高对地面用户的服务能力,本文在低轨卫星和地面内容服务器上设置缓存,并联合低轨卫星、地面内容服务器以及地面用户在同频干扰下,针对星地网络的传输吞吐问题进行建模。使... 详细信息

传统卫星透明转发模式在新型星地网络下会导致巨大的时延。为提高对地面用户的服务能力,本文在低轨卫星和地面内容服务器上设置缓存,并联合低轨卫星、地面内容服务器以及地面用户在同频干扰下,针对星地网络的传输吞吐问题进行建模。使用改进的粒子群(PSO)算法和支持超平面优化(SHOT)求解器求解。实验表明,对目标优化问题求解时,SHOT求解器获得的曲线较为平滑,优化的PSO算法相比SHOT求解器得到的结果,有2%上下的波动。在信干噪比阈值为8 dB和最大功率20 W,以及卫星或地面内容服务器干扰数量分别为2和3的约束下,可分别求得45 Mbps和37 Mbps的系统吞吐量。在分别设置低轨卫星、地面内容服务器以及地面用户数量的情况下,本文对两种算法的运行时间进行了分析,最坏情况下设置3类数量为4时,优化PSO解法比SHOT求解器快约10 s。结果表明,启发式算法更适用于未来复杂星地网络建模,更适合寻找非凸非线性全局解,并在高维问题下求解速度表现更优。

关键词：低轨卫星星地网络缓存粒子群 SHOT求解器

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烟草锌素营养研究进展

中国农学通报 2017年第19期33卷 46-51页

作者：方秀范艺宽许自成张森魏壮状任志广河南农业大学烟草学院郑州450002 河南省烟草公司烟草研究所郑州472000

锌是烟草正常生长发育过程中所必需的微量营养元素之一,具有多种生物学功能,对烟草产量和品质的形成有着重要的作用。近年来,随着微量营养元素研究的不断深入,对烤烟锌素营养的研究增加。文章综述了烟叶锌含量与土壤锌含量的关系、锌在... 详细信息

锌是烟草正常生长发育过程中所必需的微量营养元素之一,具有多种生物学功能,对烟草产量和品质的形成有着重要的作用。近年来,随着微量营养元素研究的不断深入,对烤烟锌素营养的研究增加。文章综述了烟叶锌含量与土壤锌含量的关系、锌在烟叶中的累积与分布特征、锌对烟草生长发育、生理特性和烟叶产质量的影响、锌与烟草的抗病毒特性以及锌与其他营养元素之间的互作关系,并提出了今后国内烟草锌素营养的研究前景,以期为提高烤烟烟叶品质及合理施用锌肥提供可行性依据。

关键词：锌素营养烟草研究进展

Effect of Zinc Oxide Nanoparticles on Denitrification and Denitrifying Bacteria Communities in Typical Estuarine Sediments

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Journal of Ocean University of China 2021年第3期20卷 599-607页

作者： CHEN Xi XIANG zhuangzhuang ren Zhaomeng HUANG Xiao LI Hui SUN Pengfei BAI Jie College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China College of Marine Life Sciences Ocean University of ChinaQingdao 266003China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlSchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Marine Environmental Science and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China

For revealing the effects of increasing of zinc oxide nanoparticles(ZnO NPs)on denitrification and denitrifying bacteria communities in estuarine sediments,the surface sediments of two typical estuaries(the Yangtze River Estuary and the Yellow River Estuary)were added with medium concentration(170mgL−1)and high concentration(1700mgL−1)of ZnO NPs for anaerobic cul-ture in *** concentration of NO_(3)^(−)and NO_(2)^(−),the reductase activity and denitrification rate were measured by physico-chemical analysis,nirS gene abundance and denitrifying bacteria communities by molecular biological *** results showed that ZnO NPs inhibited NO_(3)^(−), NO_(2)^(−)reduction process and NO_(3)^(−), NO_(2)^(−)reductase activity,and a stronger inhibition effect resulting from the higher ZnO NPs *** NPs decreased nirS gene abundance and community diversity of denitrifying *** addition,the inhibition degree of ZnO NPs on the denitrification process of sediments in different estuaries was *** results were of great significance for evaluating the potential ecological toxicity and risks of nanomaterials in estuaries.

关键词： zinc oxide nanoparticles denitrification denitrifying bacteria community estuarine sediments

Optimum Driving System Design for Dual-Motor Pure Electric Vehicles

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Journal of Beijing Institute of Technology 2020年第4期29卷 592-602页

作者： Hongwei Zhang Weichi Chen zhuangzhuang Shang Zhifeng Xu Zepeng Gao Yong Chen Hongbin ren Automobile Research Institute School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China Automotive Engineering Institute Guangzhou Automobile Group Co.Ltd.Guangzhou 511434China Beijing Electric Vehicle Co.Ltd. Beijing 100081China

A pure electric vehicle driven by dual motors is taken as the research object and the driving scheme of the driving motor is improved to increase the transmission efficiency of existing electric *** on the architecture of the transmission system,we propose vehicle performance parameters and performance indexes of a pure electric vehicle,a time-sharing driving strategy of dual ***,the parameters of the battery,motor,and transmission system are ***,the electric vehicle transmission model is built in Amesim and the control strategy is designed in *** the optimization goal of improving the vehicle’s dynamic performance and driving range,the optimal parameters are determined through ***,the characteristics of the motor are tested on the *** results show that the energy-saving potential of the timesharing driven double motor is higher,and the driving mileage of the double motor drive is increased by 4%.

关键词： pure electric vehicle vehicle powertrain parameter matching time sharing drive

Durable semi-crystalline interphase engineering to stabilize high voltage Ni-rich cathode in dilute ether electrolyte

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Journal of Energy Chemistry 2023年第4期79卷 110-117页

作者： zhuangzhuang Cui Shunqiang Chen Qingshun Nian Yecheng Li Yawei Chen Bing-Qing Xiong Zihong Wang Zixu He Shuhong Jiao Xiaodi ren School of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026AnhuiChina

Ethers are promising electrolyte solvents for secondary Li metal batteries because of their excellent reduction ***,their oxidation stability has been mostly relying on the high concentration approach,and limited progress has been made on building effective interphase to protect the cathode from the corrosion of the *** this work,we construct a semi-crystalline interfacial layer on the surface of Li(Ni_(0.8)Co_(0.1)Mn_(0.1))O_(2)cathode that can achieve improved electrochemical stability in the highly corrosive chemical environment formed by the decomposition of ether *** from traditional brittle crystalline interphases,the optimized semi-crystalline layer with low modulus and high ionic conductivity can effectively relieve electrode strain and maintain the integrity of the interface *** to this design,the continuous oxidation decomposition of ether-based electrolytes could be significantly suppressed and the battery shows outstanding cycling stability(84%capacity retention after 300 cycles).This article provides a solution to address the oxidation instability issue of ether-based electrolytes.

关键词： Cathode/electrolyte interphase Semi-crystalline Ether electrolyte High-voltage cathode Li-metal batteries

Spatial changes and driving factors of lake water quality in Inner Mongolia, China

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Journal of Arid Land 2023年第2期15卷 164-179页

作者： ren Xiaohui YU Ruihong LIU Xinyu SUN Heyang GENG Yue QI Zhen ZHANG zhuangzhuang LI Xiangwei WANG Jun ZHU Penghang GUO Zhiwei WANG Lixin XU Jifei Inner Mongolia Key Laboratory of River and Lake Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot 010021China Key Laboratory of Mongolian Plateau Ecology and Resource Utilization Ministry of EducationHohhot 010021China

Lakes play important roles in sustaining the ecosystem and economic development in Inner Mongolia Autonomous Region of China,but the spatial patterns and driving mechanisms of water quality in lakes so far remain *** study aimed to identify the spatial changes in water quality and the driving factors of seven lakes(Juyanhai Lake,Ulansuhai Lake,Hongjiannao Lake,Daihai Lake,Chagannaoer Lake,Hulun Lake,and Wulannuoer Lake)across the longitudinal axis(from the west to the east)of Inner ***-scale research was conducted using the comprehensive trophic level index(TLI(Σ)),multivariate statistics,and spatial analysis *** results showed that most lakes in Inner Mongolia were weakly *** dissolved solids and salinity of lake water showed obvious zonation *** and phosphorus were identified as the main pollutants in lakes,with high average concentrations of total nitrogen and total phosphorus being of 4.05 and 0.21 mg/L,*** values of TLI(Σ)ranged from 49.14 to 71.77,indicating varying degrees of lake eutrophication,and phosphorus was the main driver of lake *** lakes of Inner Mongolia could be categorized into lakes to the west of Daihai Lake and lakes to the east of Daihai Lake in terms of salinity and TLI(Σ).The salinity levels of lakes to the west of Daihai Lake exceeded those of lakes to the east of Daihai Lake,whereas the opposite trend was observed for lake trophic *** intensity and mode of anthropogenic activities were the driving factors of the spatial patterns of lake water *** is recommended to control the impact of anthropogenic activities on the water quality of lakes in Inner Mongolia to improve lake ecological *** findings provide a more thorough understanding of the driving mechanism of the spatial patterns of water quality in lakes of Inner Mongolia,which can be used to develop strategies for lake ecosystem protection and water resources management i

关键词： salinity lake eutrophication lake water quality comprehensive trophic level index anthropogenic activities Daihai Lake Inner Mongolia

Biomimetic proton pocket and effective interfacial modulation for zinc metal anodes

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Science China Chemistry 2024年

作者： Qi Dong Qingshun Nian Xuan Luo Jiajia Fan Jinyu Jiang zhuangzhuang Cui Digen Ruan Xiaodi ren Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China

Rechargeable aqueous zinc batteries（RAZBs） offer a promising solution for large-scale energy storage due to the abundance,low cost, and safety of Zn. However, practical applications are hindered by Zn anode instability, dendrite growth, and hydrogen evolution reactions（HER）. Chaotropic Zn（ClO4）2electrolytes are favorable for low-temperature operations but exacerbate these issues due to their high acidity, leading to severe Zn corrosion and layered double hydroxide formation. We propose a biomimetic strategy using methylguanidoacetic acid（creatine） as a low-cost, eco-friendly additive to address these challenges. Creatine acts as a proton pocket to finely tune the pH of acidic Zn（ClO4）2electrolytes for suppressing HER and stabilizing the Zn ***, the formed creatinine cations adsorb on the Zn surface, promoting highly controlled Zn deposition with a preferred（002） orientation. This approach significantly enhances battery cycling performance, with Zn||Zn cells demonstrating extended cycling stability at both low and high current densities. Zn||Cu cells exhibited improved Coulombic efficiency over thousands of cycles, indicating highly reversible Zn plating/stripping. Notably, stable cell operations were realized at the temperature as low as-35°C without electrolyte freezing. Our findings highlight the potential of biomimetic proton regulation and interfacial modulation for improving the stability and reversibility of Zn plating/stripping in RAZBs.

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Optimized new Shengmai powder(优化新生脉散方) inhibits myocardial fibrosis in heart failure by regulating the rat sarcoma/rapidly accelerated fibrosarcoma/mitogen-activated protein kinase kinase/extracellular regulated protein kinases signaling pathway

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Journal of Traditional Chinese Medicine 2024年第3期44卷 448-457页

作者： ZHANG Zeyu JIA zhuangzhuang SONG Yuwei ZHANG Xuan WANG Ci WANG Shuai ZHANG Peipei ren Qiuan WANG Xianliang MAO Jingyuan Department of Cardiovascular the First Teaching Hospital of Tianjin University of Traditional Chinese MedicineNational Clinical Research Center for Chinese Medicine Acupuncture and MoxibustionTianjin 300381China

OBJECTIVE: Exploring the effect of Optimized New Shengmai powder(优化新生脉散方, ONSMP) on myocardial fibrosis in heart failure(HF) based on rat sarcoma(RAS)/rapidly accelerated fibrosarcoma(RAF)/mitogen-activated protein kinase kinase(MEK)/extracellular regulated protein kinases(ERK) signaling pathway. METHODS: Randomized 70 Sprague-Dawley rats into sham(n = 10) and operation(n = 60) groups, then established the HF rat by ligating the left anterior descending branch of the coronary artery. We randomly divided the operation group rats into the model, ONSMP [including low(L), medium(M), and high(H) dose], and enalapril groups. After the 4-week drug intervention, echocardiography examines the cardiac function and calculates the ratios of the whole/left heart to the rat's body weight. Finally, we observed the degree of myocardial fibrosis by pathological sections, determined myocardium collagen(COL) Ⅰ and COL Ⅲ content by enzyme-linked immunosorbent assay, detected the m RNA levels of COL Ⅰ, COL Ⅲ, α-smooth muscle actin(α-SMA), and c-Fos proto-oncogene(c-Fos) by universal real-time, and detected the protein expression of p-RAS, p-RAF, p-MEK1/2, p-ERK1/2, p-ETS-like-1 transcription factor(p-ELK1), p-c-Fos, α-SMA, COL Ⅰ, and COL Ⅲ by Western blot. RESULTS: ONSMP can effectively improve HF rat's cardiac function, decrease cardiac organ coefficient, COL volume fraction, and COL Ⅰ/Ⅲ content, down-regulate the m RNA of COL Ⅰ/Ⅲ, α-SMA and c-Fos, and the protein of p-RAS, p-RAF, p-MEK1/2, p-ERK1/2, p-ELK1, c-Fos, COL Ⅰ/Ⅲ, and α-SMA. CONCLUSIONS: ONSMP can effectively reduce myocardial fibrosis in HF rats, and the mechanism may be related to the inhibition of the RAS/RAF/MEK/ERK signaling pathway.

关键词： myocardial fibrosis heart failure sarcoma rapidly accelerated fibrosarcoma mitogen-activated protein kinases extracellular regulated protein kinases optimized new Shengmai powder

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