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Amino-functionalized UiO-66-doped mixed matrix membranes with high permeation performance and fouling resistance

Chinese Journal of Chemical Engineering 2024年第3期67卷 68-77页

作者： Yi Zhang Di Liu zhaoli wang Junjian Yu Yanyin Cheng Wenjing Li Zhe wang Hongzhe Ni Yuchao wang School of Chemical Engineering Changchun University of TechnologyChangchun 130012China Advanced Institute of Materials Science Changchun University of TechnologyChangchun 130012China Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province Changchun 130012China School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China

For the reduction of bovine serum proteins from wastewater,a novel mixed matrix membrane was prepared by functionalizing the substrate material polyaryletherketone(PAEK),followed by carboxyl groups(C-SPAEKS),and then adding amino-functionalized UiO-66-NH_(2)(Am-UiO-66-NH_(2)).Aminofunctionalization of UiO-66 was accomplished by melamine,followed by an amidation reaction to immobilize Am-UiO-66-NH_(2),which was immobilized on the surface of the membrane as well as in the pore channels,which enhanced the hydrophilicity of the membrane surface while increasing the negative potential of the membrane *** nanoparticle-loaded ultrafiltration membrane has good permeation performance,with a pure water flux of up to 482.3 L·m^(-2)·h^(-1) for C-SPAEKS/AmUiO-66-NH_(2) and a retention rate of up to 98.7%for bovine serum albumin(BSA)-contaminated ***,after several hydrophilic modifications,the flux recovery of BSA contaminants by this series of membranes increased from 56.2%to 80.55%of pure *** results of ultra-filtration flux time tests performed at room temperature showed that the series of ultrafiltration membranes remained relatively stable over a test time of 300 ***,the newly developed mixed matrix membrane showed potential for high efficiency and stability in wastewater treatment containing bovine serum proteins.

关键词： Ultrafiltration Mixed matrix membranes Amino functionalization Hydrophilic modification Negatively charged

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Amine-functionalized metal organic framework@graphene oxide as filler in PAEK-containing carboxyl group membrane for ultrafiltration with ultra-high permeability and strong fouling resistance

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Chinese Journal of Chemical Engineering 2024年第6期70卷 93-103页

作者： zhaoli wang Wenjing Li Yi Zhang Yanyin Cheng Junjian Yu Tianming Dong Xiaoyu Chi Di Liu Zhe wang School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China Advanced Institute of Materials Science Changchun University of TechnologyChangchun 130012China Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province Changchun 130012China

Achieving high fouling resistance and permeability using membrane separation technology in water treatment processes remains a *** this work,a novel mixed-matrix membrane(MMM)(poly(arylene ether ketone)[PAEK]-containing carboxyl groups[PAEK-COOH]/UiO-66-NH_(2)@graphene oxide[GO])with superb fouling resistance and high permeability was prepared by the nonsolvent-induced phase separation method,by in-situ growth of UiO-66-NH_(2) on the GO layer,and by preparing hydrophilic *** the basis of the structure and performance analysis of the MMM,the maximum water flux reached 591.25 L·m^(-2)·h^(-1) for PAEK-COOH/UiO-66-NH_(2)@GO,whereas the retention rate for bovine serum albumin increased from 85.40%to 94.87%.As the loading gradually increased,the hydrophilicity of the MMMs increased,significantly enhancing their fouling *** strongest anti-fouling ability observed was 94.74%,which was 2.02 times greater than that of the pure *** the same time,the MMMs contained internal amide and hydrogen bonds during the preparation process,forming a cross-linked structure,which further enhanced the mechanical strength and chemical *** summary,the MMMs with high retention rate,strong permeability,and anti-fouling ability were successfully prepared.

关键词： Poly(arylene ether ketone)-containing Carboxyl groups (PAEK-COOH) UiO-66-NH_(2)@graphene oxide Hydrophilic modification Ultra-high selectivity Strong anti-fouling

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Study on Characteristics of a High-Precision Cold Gas Micro Thruster

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Engineering（科研） 2024年第1期16卷 38-45页

作者： zhaoli wang Changbin Guan Xudong wang Weijie Zheng Longfei Su Advanced Space Propulsion Lab Beijing Institute of Control Engineering Beijing China

In order to improve the reliability of the spacecraft micro cold gas propulsion system and realize the precise control of the spacecraft attitude and orbit, a micro-thrust, high-precision cold gas thruster is carried out, at the same time due to the design requirements of the spacecraft, this micro-thrust should be continuous working more than 60 minutes, the traditional solenoid valve used for the thrusts can’t complete the mission, so a long-life micro latching valve is developed as the control valve for this micro thruster, because the micro latching valve can keep its position when it cuts off the outage. Firstly, the authors introduced the design scheme and idea of the thruster. Secondly, the performance of the latching valve and the flow characteristics of the nozzle were simulated. Finally, from the experimental results and compared with the numerical study, it shows that the long-life micro cold gas thruster developed in this paper meets the mission requirements.

关键词： High-Precision Micro Thruster Performance Flow Characteristic Experiment

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Space advanced technology demonstration satellite

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Science China(Technological Sciences) 2024年第1期67卷 240-258页

作者： ZHANG XiaoFeng CHEN Wen ZHU XiaoCheng MENG Na HE Junwang BI XingZi ZHANG YongHe SHI Qi LI Fei LIU Rui FENG ZhengGong LIU Liu LI JinSong WU HaiChen XU DongXiao LI TaiJie HUANG JiangJiang LIU Shuo LI TianTong YU XianSheng GAO Yang ZHOU Heng BAN HanYu ZHANG YanLi ZHANG YueTing YANG YingQuan HE Tao DUAN XuLiang CHEN Xin wang YaMin SUN AnTai ZHANG KuoXiang SUN Ying wang YaoBin FAN ChengCheng XIONG ShaoLin LI XinQiao WEN XiangYang LING ZhiXing SUN XiaoJin ZHANG Chen BAI XianYong wang ZhanShan DENG YuanYong TIAN Hui YANG JianFeng XUE HongBo SANG Peng LIU JinGuo ZHENG HuiLong ZHU Xiang HE JianWu LI Hui XU LuXiang XU ShuYan CHEN WenWu LIU ZhenDong wang zhaoli MAO XiangLong GAO Rong LI ZongXuan DING GuoPeng wang XinYu DOU RunJiang WENG LuBin LUO Hao wang YaPing LIANG XianFeng FANG ZiRuo Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201203China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China National Astronomical Observatory of China Beijing 100101China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 200083China Institute of Precision Optical Engineering School of Physics Science and EngineeringTongji UniversityShanghai 200092China School of Earth and Space Sciences Peking UniversityBeijing 100871China Xi’an Institute of Optics and Precision Mechanics Chinese Academy of SciencesXi’an 710119China National Space Science Center Chinese Academy of SciencesBeijing 100190China Shenyang Institute of Automation Chinese Academy of SciencesShenyang 110016China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China Institute of Mechanics Chinese Academy of SciencesBeijing 100190China Shanghai Institute of Organic Chemistry Chinese Academy of SciencesShanghai 200032China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China Nanyang Technological University Singapore 569830Singapore Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China Technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijing 100049China Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Institute of Semiconductors Chinese Academy of SciencesBeijing 100083China Institute of Automation Chinese Academy of SciencesBeijing 100190China School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310058China

The Space Advanced Technology demonstration satellite(SATech-01),a mission for low-cost space science and new technology experiments,organized by Chinese Academy of Sciences(CAS),was successfully launched into a Sun-synchronous orbit at an altitude of~500 km on July 27,2022,from the Jiuquan Satellite Launch *** as an experimental platform for space science exploration and the demonstration of advanced common technologies in orbit,SATech-01 is equipped with 16 experimental payloads,including the solar upper transition region imager(SUTRI),the lobster eye imager for astronomy(LEIA),the high energy burst searcher(HEBS),and a High Precision Magnetic Field Measurement System based on a CPT Magnetometer(CPT).It also incorporates an imager with freeform optics,an integrated thermal imaging sensor,and a multi-functional integrated imager,*** paper provides an overview of SATech-01,including a technical description of the satellite and its scientific payloads,along with their on-orbit performance.

关键词： SATech-01 spacecraft design scientific instruments on-orbit performance

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Simulation Performance Evaluation and Uncertainty Analysis on a Coupled Inundation Model Combining SWMM and WCA2D

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International Journal of Disaster Risk Science 2022年第3期13卷 448-464页

作者： Zhaoyang Zeng zhaoli wang Chengguang Lai School of Civil Engineering and Transportation State Key Laboratory of Subtropical Building ScienceSouth China University of TechnologyGuangzhou510641China Pazhou Lab Guangzhou510335China Guangdong Engineering Technology Research Center of Safety and Greenization for Water Conservancy Project Guangzhou510641China

Urban floods are becoming increasingly more frequent,which has led to tremendous economic *** application of inundation modeling to predict and simulate urban flooding is an effective approach for disaster prevention and risk reduction,while also addressing the uncertainty problem in the model is always a challenging *** this study,a cellular automaton(CA)-based model combining a storm water management model(SWMM)and a weighted cellular automata 2D inundation model was applied and a physical-based model(LISFLOOD-FP)was also coupled with SWMM for *** simulation performance and the uncertainty factors of the coupled model were systematically *** results show that the CA-based model can achieve sufficient accuracy and higher computational efficiency than can a physical-based *** resolution of terrain and rainstorm data had a strong influence on the performance of the CA-based model,and the simulations would be less creditable when using the input data with a terrain resolution lower than 15 m and a recorded interval of rainfall greater than 30 *** roughness value and model type showed limited impacts on the change of inundation depth and occurrence of the peak inundation ***,the CA-based coupled model demonstrated laudable applicability and can be recommended for fast simulation of urban flood *** study also can provide references and implications for reducing uncertainty when constructing a CA-based coupled model.

关键词： Guangzhou LISFLOOD-FP Uncertainty analysis Urban flood WCA2D

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气候变化对城市暴雨洪涝影响研究进展

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华北水利水电大学学报（自然科学版） 2024年第2期45卷 1-14页

作者：邓梓锋高玮志廖耀星王兆礼华南理工大学土木与交通学院广东广州510641 人工智能与数字经济广东省实验室(广州) 广东广州510335

在气候变化和城市化的双重驱动下,人口稠密、经济发达的城市地区的洪涝问题日趋严重。气候变化背景下城市暴雨洪涝研究既是全面认识和理解气候变化影响的重要内容,也是降低灾害风险、减轻灾害影响的实际需要。从探究方法和技术手段的角... 详细信息

在气候变化和城市化的双重驱动下,人口稠密、经济发达的城市地区的洪涝问题日趋严重。气候变化背景下城市暴雨洪涝研究既是全面认识和理解气候变化影响的重要内容,也是降低灾害风险、减轻灾害影响的实际需要。从探究方法和技术手段的角度,综述了气候变化下极端降水特征、城市暴雨洪涝和城市洪涝韧性3个方面的国内外主要研究成果;系统归纳了气候变化下城市暴雨洪涝变化趋势的诊断方法、技术手段,关注气候情景设计、洪涝评估模型;阐述了气候变化下城市洪涝韧性的理念与实践,总结了韧性定性、定量评估方法;指出了气候变化下城市暴雨洪涝研究面临的主要挑战及关键技术难题,提出了未来研究的重点方向,如加强对气候变化与城市化双重驱动下极端降水、复合洪涝时空演变特征及其形成机理的研究,提高人工智能模型对气候变化背景下洪涝模拟的准确性和可解释性,深化城市洪涝韧性中概念框架、定性定量方法以及不确定性的探讨等。

关键词：气候变化城市洪涝洪涝韧性极端降水研究进展

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A Framework on Fast Mapping of Urban Flood Based on a Multi-Objective Random Forest Model

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International Journal of Disaster Risk Science 2023年第2期14卷 253-268页

作者： Yaoxing Liao zhaoli wang Chengguang Lai Chong-Yu Xu State Key Laboratory of Subtropical Building Science School of Civil Engineering and TransportationSouth China University of TechnologyGuangzhou510641China Pazhou Lab Guangzhou510335China Department of Geosciences University of Oslo0316OsloNorway

Fast and accurate prediction of urban flood is of considerable practical importance to mitigate the effects of frequent flood disasters in *** improve urban flood prediction efficiency and accuracy,we proposed a framework for fast mapping of urban flood:a coupled model based on physical mechanisms was first constructed,a rainfall-inundation database was generated,and a hybrid flood mapping model was finally proposed using the multi-objective random forest(MORF)*** results show that the coupled model had good reliability in modelling urban flood,and 48 rainfall-inundation scenarios were then *** proposed hybrid MORF model in the framework also demonstrated good performance in predicting inundated depth under the observed and scenario rainfall *** spatial inundated depths predicted by the MORF model were close to those of the coupled model,with differences typically less than 0.1 m and an average correlation coefficient reaching *** MORF model,however,achieved a computational speed of 200 times faster than the coupled *** overall prediction performance of the MORF model was also better than that of the k-nearest neighbor *** research provides a novel approach to rapid urban flood mapping and flood early warning.

关键词： Coupled model Designed rainfall events Multi-objective random forest(MORF)method Rainfall-inundation database Urban flood prediction

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吸气肌训练联合负重训练用于髋关节置换术后康复训练中对患者关节功能恢复及肺部感染发生率的影响

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医学临床研究 2024年第1期41卷 88-91页

作者：施亚琴盛亚妮王兆丽榆林市星元医院骨二科陕西榆林719000 延安市人民医院烧伤手足外科陕西延安716000

【目的】探讨吸气肌训练联合负重训练用于髋关节置换术后康复训练中对患者关节功能恢复及肺部感染发生率的影响。【方法】选择2020年1月至2022年1月在榆林市星元医院接受髋关节置换术的100例患者,按照随机数字表法分为观察组和对照组,每... 详细信息

【目的】探讨吸气肌训练联合负重训练用于髋关节置换术后康复训练中对患者关节功能恢复及肺部感染发生率的影响。【方法】选择2020年1月至2022年1月在榆林市星元医院接受髋关节置换术的100例患者,按照随机数字表法分为观察组和对照组,每组50例。髋关节置换术后7 d,对照组给予常规呼吸训练联合负重康复训练,观察组在对照组基础上联合吸气肌训练。比较两组干预前后肺功能指标[第1秒用力呼气容积(FEV_(1))、用力肺活量(FVC)、最大呼气流速峰值(PEF)以及最大呼气压(MIP)]、髋关节功能、生活质量以及并发症发生率。【结果】干预后,两组肺功能指标、髋关节功能各项评分、生活质量各项评分均上升(P<0.05),且观察组上升更为明显(P<0.05);观察组并发症发生率显著低于对照组(P<0.05)。【结论】将吸气肌训练联合负重训练用于髋关节置换术围术期患者中,可促进患者肺功能以及髋关节功能恢复,提高患者生活质量,降低肺部感染等并发症发生率,具有较高临床应用价值。

关键词：关节成形术,置换,髋/康复髋关节/生理学运动疗法肺炎

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Selective photo-reduction of nitrate to nitrogen with a two-step process by a KBH_(4)/Cu(II)modified CuFe_(2)O_(4)photocatalyst

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Nano Research 2023年第7期16卷 10462-10475页

作者： Li Cai Jinrui Guo Ting Liu Jing Tian zhaoli wang Yong Liu Mohamed SHamdy Xuping Sun College of Chemistry and Materials Science Sichuan Normal UniversityChengdu 610066China Chengdu Academy of Environmental Sciences Chengdu 610072China Key Laboratory of Treatment for Special Wastewater of Sichuan Province Higher Education System Chengdu 610066China Catalysis Research Group(CRG) Department of ChemistryCollege of ScienceKing Khalid UniversityP.O.Box 9004Abha 61413Saudi Arabia Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China

Nitrate(NO_(3)^(-))removal by photochemical-reduction has received extensive ***,the low selectivity of NO_(3)^(-)reduction to N_(2)hinders the application of this *** this study,a novel Cu@Fe-Cu-CuFe_(2)O_(4)-x photocatalyst was prepared by modifying CuFe_(2)O_(4)with KBH4 and Cu(II),and used to selectively reduce NO_(3)^(-)to N_(2)with a two-step reduction *** step(1),with Cu@Fe-Cu-CuFe_(2)O_(4)-x/ultraviolet(UV)system,91.0%NO_(3)^(-)was reduced to 52.3%NO_(2)-and 39.4%N_(2)within 60 *** rapid removal of NO_(3)^(-)was due to the synergistic effect of oxygen vacancies,Fe-Cu corrosion cell,and CuFe_(2)O_(4)*** step(2),H_(2)C_(2)O_(4)and H_(2)O_(2)were introduced into the effluent of step(1)to promote CO_(2)·-formation via Fe(II)and Fe(III)catalysis and UV radiation,which boosted the selective reduction of NO_(2)-to N_(2).When H_(2)C_(2)O_(4)and H_(2)O_(2)dosages were both 4.0 mmol·L^(-1)and the reaction time was 30 min,the removal efficiency of NO_(2)-achieved 100%and the selectivity of N_(2)was 83.0%.Overall,the two-step reduction process achieved 95.0%NO_(3)^(-)removal efficiency and 90.1%N_(2)selectivity with initial NO_(3)^(-)concentration of 30 mg·N·L^(-1).In addition,the denitrification mechanism of the two-step reduction process was tentatively proposed.

关键词： nitrate nitrite photochemical-reduction denitrification photocatalysis

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Spatial Differentiation and Convergence Trend of High-quality Development Level of China’s Tourism Economy

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Chinese Geographical Science 2024年第2期34卷 230-249页

作者： CAO Shanshan HE zhaoli NIU Jinlan wang Songmao ZHAO Lei School of Geography and Ocean Science Nanjing UniversityNanjing 210046China School of Business Administration Nanjing University of Finance and EconomicsNanjing 210046China School of Economics and Management Shandong Agricultural Uni-versityTai’an 271018China School of Hotel Management Shanghai Business SchoolShanghai 201400China School of Man-agement Zhejiang University of TechnologyHangzhou 310014China

This paper aims to interpret the connotation of high-quality development of tourism economy(HQTE)from the perspective of the new development concepts of innovation,coordination,green,openness and sharing,and then to evaluate the spatial differenti-ation of China’s HQTE based on provincial panel data from 2009 to ***,we employ the spatial convergence model to ex-plore the absolute and conditionalβconvergence trends of HQTE in the whole country and the eastern,central and western regions of *** empirical results reveal that:1)within the decade,from 2009 to 2018,regions of China with the highest HQTE index is its eastern region followed by the central region and then the western region,but the fastest growing one is the western region of China fol-lowed by the central region and then the eastern region.2)Whether or not the spatial effect is included,there are absolute and condition-alβconvergence in HQTE in the whole country and aforementioned three regions.3)The degree of government attention as well as the level of economic development and location accessibility are the positive driving factors for the convergence of HQTE in the whole country and the three *** degree of marketization and human capital have not passed the significance test either in the whole country or in the three *** above conclusions could deepen the understanding of the regional imbalance and spatial conver-gence characteristics of HQTE,clarify the primary development objects,and accomplish the goal of China’s HQTE.

关键词： new development concepts high-quality development of tourism economy(HQTE) spatial convergence China

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