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A non-antibiotic organic coating on ZA6-1 surface releasing different concentrations of sodium dodecyl sulphate/levulinic acid for orthopaedic application

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Biosurface and Biotribology 2024年第2期10卷 42-51页

作者： Feng Zou deren zhao Yangkai Liu Qiqi Lu Hulin Liu Zilin Chen Yaxing Fang Xiaodong Tan Yunjie Xiang Xue Feng Yongping Zhang Xi Rao School of Materials and Energy Southwest UniversityChongqingChina Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing Southwest UniversityChongqingChina Department of Clinical Laboratory University-Town Hospital of Chongqing Medical UniversityChongqingChina

Bone implantation surgery is often accompanied by bacterial infection,resulting in infectious bone non-union,pathological fracture and other serious consequences,which will aggravate the pain of patients.A non-antibiotic coating consisting of sodium dodecyl sulphate(SDS)and levulinic acid(LA)with different concentrations was prepared by the authors on the zinc–aluminium alloy(ZA6-1)using a wet chemistry treatment for orthopaedic *** influence of SDS/LA concentrations on the surface morphology,composition and performance of the developed coating was *** results showed that as-prepared coating on a zinc alloy surface could improve the substrate's corrosion resistance and increase the degradation rate from 0.82 to 19.70μm/year upon raising the SDS/LA ***,higher hydrophilicity(100%)and morphology,as well as good cell adhesion and differentiation(ALP>95%for 7 days)were observed on coated zinc *** increased SDS/LA concentration slightly weakens the biocompatibility and enhances the antibacterial performance of coated zinc alloys due to the synergistic effect of SDS/***,the coating comprising 6 wt.%SDS and 9 wt.%LA showed excellent antibacterial action with a high level of biocompatibility,confirming its potential application for orthopaedic implants.

关键词： antibacterial biocompatibility biomaterials material property

Improving anti-Gram-positive-bacterial performance and osteogenesis for zinc alloy via mussel mimetic polydopamine with non-antibiotic lysozyme and parathyroid hormone

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Biosurface and Biotribology 2023年第4期9卷 199-209页

作者： deren zhao Tianhao Chen Jinqian Chen Banglun Huang Jihua Nie Hulin Liu Yangkai Liu Zilin Chen Feng Zou Qiqi Lu Xiaodong Tan Yunjie Xiang Jing Li Yongping Zhang Xue Feng Xi Rao School of Materials and Energy Southwest UniversityChongqingChina Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing Southwest UniversityChongqingChina Department of Clinical Laboratory University-Town Hospital of Chongqing Medical UniversityChongqingChina

In this work,a novel coating with a non-antibiotic agent for inhibiting Gram-positive bacteria and promoting osteogenesis was prepared on zinc-aluminium alloy(ZA6-1)via mussel mimetic polydopamine(PDA)containing lysozyme(LYS)and parathyroid hormone(PTH).The results indicate that as-deposited coatings can efficiently decrease the degradation rate of ZA6-1 from 0.52 to 0.16 mm/year,and the addition of LYS weakens the coating resistance,while the addition of PTH enhances the coating *** spite that no obvious inhibition of Escherichia coli is observed,the coated zinc alloys show good in vitro antibacterial performance against Staphylococcus *** with ZA6-1 zinc alloys,the increase of antibacterial efficacy reaches 86.9%-90.1%.Furthermore,the lower hydrophilicity(26.4°),higher osteoblast cell viability(>100%),good osteoblast cell morphology and better osteoblast cell differentiation(ALP=107.7%)for PDA-LYS/PTH coated samples support that as-prepared coating is promising for modifying biodegradable zinc implants.

关键词： antibacterial biocompatibility non-antibiotic antimicrobial strategy

Reliability Modeling and Simulation of Cyber-Physical Power Distribution System considering the Impacts of Cyber Components and Transmission Quality

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Reliability Modeling and Simulation of Cyber-Physical Power ...

Research on Security and Stable Checking Algorithm of Power System Control

第37届中国控制会议

作者： Shunjiang Wang Zequn Wu Anlong Su Shuangyuan Jin Yujue Xia deren zhao University of Chinese Academy of Sciences Shenyang Institute of Computing Technology Chinese Academy of Sciences State Grid Liaoning Electric Power Company Limited School of Information Science & Engineering Northeastern University State Grid Fushun Electric Power Supply Company State Grid Shenyang Electric Power Supply Company State Grid Liaoyang Electric Power Supply Company

Cyber-Physical Power Distribution System（CPPDS）, as one of the most critical part of smart grid, is vulnerable to cyber impacts. The urgent demand of analyzing cyber impacts of CPPDS is increasing. In this paper, we introduce an analytical method to quantify the impacts of cyber components and transmission quality on CPPDS operation reliability. Specifically, we present two models, namely static connection model and dynamic transmission model, to analyze the impacts of cyber *** establishment of CPPDS operation is based on fault location, isolation and service restoration（FLISR）. The implementation of this method and the effectiveness of cyber impacts are demonstrated by using an illustrative 6-bus power system. Additionally, system unavailability（SU）, the reliability index we firstly propose for reliability assessment, taking the influence of cyber-physical coupling into consideration. Based on reliability indices and sensitivity analysis, we verify the rationality of the proposed model and provide reasonable analysis results of cyber impacts in this paper.

关键词： cyber-physical power distribution system transmission quality reliability modeling and simulation

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Research on Security and Stable Checking Algorithm of Power ...

聚邻苯二甲酸二烯丙酯的合成及其玻璃纤维增强塑料

第30届中国控制与决策会议

作者： Shunjiang Wang Yilin Pan Anlong Su Hui Zhang Yuyu Xia deren zhao Chunsheng Yan University of Chinese Academy of Sciences Shenyang Institute of Computing Technology Chinese Academy of Sciences State Grid Liaoning Electric Power Supply Co. Ltd School of Information Science & Engineering Northeastern University State Grid Fushun Electric Power Supply Company State Grid Shenyang Electric Power Supply Company State Grid Liaoyang Electric Power Supply Company

In recent years,measures against maloperation such as power grid online security analysis software are deployed in main stations of power grid,which can hardly adapt to the frequent operation circumstances of power grid with the development of power *** this paper,security and stability problems of power grid control are analyzed based on current situation and structure of power grid,and an efficient control algorithm for main station of power grid is presented,which can achieve anti-misoperation of power grid in multiple *** full use of line characteristics,the algorithm takes less time for calculation to fulfill frequent operation of power grid with the ensurance of security,which is of great significance for the safe and stable operation of power grid and the development of smart grid.

关键词： power system control prediction algorithm

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华东化工学院学报 1986年第1期 11-17页

作者：姚希曾赵德仁李世瑨华东化工学院高分子材料系

本文研究了一种可以直接将邻苯二甲酸二烯丙酯聚合成可用作低压接触成型法制造玻璃纤维增强塑料用的粘合剂。研究了引发剂用量,聚合温度和时间,γ-聚合物的转化率和树脂(粘合剂)的凝胶化。确定了适宜的粘合剂合成条件。给出了邻苯二甲... 详细信息

本文研究了一种可以直接将邻苯二甲酸二烯丙酯聚合成可用作低压接触成型法制造玻璃纤维增强塑料用的粘合剂。研究了引发剂用量,聚合温度和时间,γ-聚合物的转化率和树脂(粘合剂)的凝胶化。确定了适宜的粘合剂合成条件。给出了邻苯二甲酸二烯丙酯玻璃纤维增强塑料的制备方法及其性能。

关键词：聚邻苯二甲酸二烯丙酯不饱和聚酯树脂复合材料无溶剂胶粘剂玻璃钢

面向新能源消纳的主动配电网电动汽车充放电功率和网络重构协调优化调度

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电力系统及其自动化学报 2019年第8期31卷 94-101页

作者：赵德仁丁雷徐立华金宇飞宋季冬李冰冰国网辽阳供电公司辽阳111000 国网铁岭供电公司铁岭112000 国网辽宁经济技术研究院沈阳110000 国电华研(北京)电力咨询有限公司北京102200

针对新能源发电和电动汽车大量接入配电网,给配电网的经济运行带来严峻挑战的现状,提出了一种基于电动汽车充放电功率和网络重构两种手段,以消纳新能源为目标的主动配电网两阶段协调优化调度策略。第1阶段建立日前优化调度模型,以弃风... 详细信息

针对新能源发电和电动汽车大量接入配电网,给配电网的经济运行带来严峻挑战的现状,提出了一种基于电动汽车充放电功率和网络重构两种手段,以消纳新能源为目标的主动配电网两阶段协调优化调度策略。第1阶段建立日前优化调度模型,以弃风功率最小以及网络损耗最小为目标函数,优化电动汽车充电站24 h的调度策略并进行日前网络动态重构,通过基于判断矩阵的混合粒子群算法求解;第2阶段以日前调度结果为基础,建立集中型充电站10 min时间尺度的实时平滑控制策略,通过SOC自动调节原理,利用模糊控制算法,降低风功率曲线的波动。结果表明,通过两阶段调度,能够在满足用户需求的基础上,充分实现网络重构和电动汽车充放电功率间的协调,提高新能源的消纳能力。

关键词：电动汽车优化调度新能源两阶段协调

维普期刊数据库

Effects of Germanium on Movement of Dislocations in p-Type Czochralski Silicon

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Journal of Rare Earths 2006年第z1期24卷 83-86页

作者： Li Dongsheng zhao Yiying Yang deren State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027 China State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027 China State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027 China

By indentation at room temperature followed by annealing at high temperatures, the pinning effect of germanium on dislocations in germanium-doped Czochralski silicon was investigated. Experimental results show that the dislocations in germanium-doped Czochralski silicon move shorter and slower than those in Czochralski silicon undoping with germanium when the concentration of germanium is over 1×1018 cm-3. The retarding velocity of dislocations is contributed to the dislocations pinning effect of the strain field introduced by the high concentration germanium, and the Ge4B cluster and the oxygen precipitation those are preferred to form at higher concentration germanium.

关键词： Czochralski silicon germanium-doped dislocation

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聚合物驱蚊剂的慢释放研究

功能高分子学报 1989年第2期2卷 149-155页

作者：诸振亚朱瑞宜匡彦青赵德仁东化工学院高分子功能材料研究室

本文研究了丙烯酸酯共聚物载体对驱蚊剂N,N-二乙基间甲苯酰胺(DETA)慢释放行为的控制,探讨了单体配比、共聚物分子量以及DETA含量对释放速率的影响。结果表明。增加亲水性单体丙烯酸(AA),可提高DETA的释放速率;降低共聚物数均分子量,会... 详细信息

本文研究了丙烯酸酯共聚物载体对驱蚊剂N,N-二乙基间甲苯酰胺(DETA)慢释放行为的控制,探讨了单体配比、共聚物分子量以及DETA含量对释放速率的影响。结果表明。增加亲水性单体丙烯酸(AA),可提高DETA的释放速率;降低共聚物数均分子量,会减少DETA的释放量;剂型中DETA含量与释放量存在线性正比关系,但DETA的含量增加并不导致释放有效时间的线性增加。本文还就共聚物膜的透湿性和碱溶性作了研究,亲水性单体AA的增加同样导致透湿性和碱溶性的增加。制备的聚合物驱蚊剂经现场应用试验,表明具有良好的长效驱蚊特性。

关键词：驱蚊剂控制释放聚合物驱蚊剂

维普期刊数据库

Remote sensing of human beings-a perspective from nighttime light

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Geo-Spatial Information Science 2016年第1期19卷 69-79页

作者： deren Li Xia zhao Xi Li State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanChina Collaborative Innovation Centre of Geospatial Technology Wuhan UniversityWuhanChina

City lights,fishing boats,and oil fields are the major sources of nighttime lights,therefore the nighttime light images provide a unique source to map human beings and their activities from outer *** most of the scholars focused on application of nighttime light remote sensing in urbanization and regional development,the actual fields are much *** paper summarized the applications of nighttime light remote sensing into fields such as the estimation of socioeconomic parameters,monitoring urbanization,evaluation of important events,analyzing light pollution,fishery,*** estimation of socioeconomic parameters,the most promising progress is that Gross Domestic Product and its growth rate have been estimated with statistical data and nighttime light data using econometric *** monitoring urbanization,urban area and its dynamics can be extracted using different classification methods,and spatial analysis has been employed to map urban *** sharp changes of nighttime light are associated with important socioeconomic events,the images have been used to evaluate humanitarian disasters,especially in the current Syrian and Iraqi *** pollution is another hotspot of nighttime light application,as the night light is related to some diseases and abnormal behavior of animals,and the nighttime light images can provide light pollution information on large scales so that it is much easier to analyze the effects of light *** each field,we listed typical cases of the *** last,future studies of nighttime light remote sensing have been predicted.

关键词： Nighttime lights socioeconomics human activities remote sensing data mining