检索结果-南通市图书馆

COF-based membranes for liquid phase separation:Preparation,mechanism and perspective

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第7期141卷 63-89页

作者： Yujie Zhao He Gu Yilun Zhou CaimeiWen Xiaolu Liu Suhua Wang Zhongshan Chen Hui Yang Xiangke Wang College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206China School of Environmental Science and Engineering Guangdong University of Petrochemical TechnologyMaoming 525000China

Covalent organic frameworks(COFs)are a new kind of crystalline porous materials composed of organic molecules connected by covalent bonds,processes the characteristics of low density,large specific surface area,adjustable pore size and structure,and easy to functionalize,which have been widely used in the field of membrane separation ***,there are more and more researches focusing on the preparation methods,separation application,and mechanism of COF membranes,which need to be further summarized and *** this review,we primarily summarized several conventional preparation methods,such as two-phase interfacial polymerization,in-situ growth on substrate,unidirectional diffusion method,layer-by-layer assembly method,mixed matrix membranes,and so *** advantages and disadvantages of each method are briefly *** application potential of COF membrane in liquid separation are introduced from four aspects:dyeing wastewater treatment,heavy metal removal,seawater desalination and oil-water ***,the mechanisms including pore structure,hydrophilic/hydrophobic,electrostatic repulsion/attraction and Donnan effect are *** the efficient removal of different kind of pollutions,researchers can select different ligands to construct membranes with specific pore size,hydrophily,salt or organic rejection ability and functional *** ideas for the design and preparation of COF membranes are ***,the future direction and challenges of the next generation of COF membranes in the field of separation are prospected.

关键词： Covalent organic frameworks Membrane materials Liquid phase separation Separation mechanism

Biochar-based materials in environmental pollutant elimination,H_(2) production and CO_(2) capture applications

在线全文

学校读者我要写书评

暂无评论

Biochar 2023年第1期5卷 723-746页

作者： Lin Fang Tao Huang Hua Lu Xi-Lin Wu Zhongshan Chen Hui Yang Suhua Wang Zhenwu Tang Zhuang Li Baowei Hu Xiangke Wang School of Life Science Shaoxing UniversityShaoxing 312000People’s Republic of China School of Materials Engineering Changshu Institute of TechnologyChangshu 215500People’s Republic of China Shaoxing Sanhe Testing Technology Co. LTDShaoxing 312000People’s Republic of China College of Geography and Environmental Science Zhejiang Normal UniversityJinhua 321004People’s Republic of China College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206People’s Republic of China School of Environmental Science and Engineering Guangdong University of Petrochemical TechnologyMaoming 525000People’s Republic of China College of Life and Environmental Sciences Minzu University of ChinaBeijing 100081People’s Republic of China.

Biochar and biochar-based materials have been studied extensively in multidisciplinary areas because of their outstanding physicochemical *** this review article,biochar and biochar-based materials in the removal of environmental pollutants,hydrogen generation and carbon dioxide capture were summarized and *** interaction mechanisms were discussed from the experimental results and characterization *** high porous structures,active surface sites,(co)doping of single metals/nonmetals,and incorporation of metal oxides or other materials improved the high activity of biochar-based materials in their ***,there are still some challenges such as:(1)the fact that H_(2) generation with high selectivity or the produced syngas to meet the real application requirement in industrial is the main challenge in H_(2) production;(2)the fact that the selective capture of CO_(2) with high stability,high adsorption capacity and recyclability at low-cost should be considered and focused on;(3)the sorption-(photo)degradation of the organic chemicals;and(4)the fact that the sorption-reduction-extraction/solidification of metals/radionuclides are efficient methods for the elimination of environmental *** the end,the perspectives,challenges and possible techniques for biochar-based materials’real application in future were described.

关键词： Biochar-based materials H_(2)production CO_(2)capture Environmental pollutant elimination Interaction mechanism

WPIA: accelerating DNN warm-up in Web browsers by precompiling WebGL programs

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2024年第6期18卷 186211-186211页

作者： TIAN Deyu MA Yun HAN Yudong YANG Qi YANG Haochen HUANG Gang Key Laboratory of High Confidence Software Technologies (Peking University) Ministry of Education School of Computer Science Peking University Institute for Artificial Intelligence Peking University National Key Laboratory of Data Space Technology and System

In this paper, we study the long warm-up time of GPU acceleration of DNN inference in Web browsers. We analyzed the reason behind the long warm-up time through a measurement study and revealed that compiling WebGL programs takes most of the warm-up time. Inspired by this finding, we proposed WPIA, an approach that suggests precompiling WebGL programs on the server side to avoid compiling them in Web browsers. WPIA tackles the challenges of precompiling by merging WebGL programs and using a record-and-replay technique. Evaluation experiment results show that WPIA can accelerate the DNN warm-up time to an order of magnitude.

关键词： Web browsers

Preparation of π-extended fullerene derivatives through addition of phenylenediamine to opencage fullerene derivatives

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Organic Chemistry Frontiers 2022年第2期9卷 320-328页

作者： Zeyu Liu Zhen Liu Rui Gao Jie Su Yi Qiu Liangbing Gan beijing National Laboratory for Molecular Sciences Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Open-cage fullerenes with carbonyl functional groups on the rim of the orifice are ideal precursors for the extension of fullerene π-*** isopropylphenylaniline,which reacts selectively with the lactone moiety on the rim of the orifice,phenylenediamine reacts with the adjacent carbonyl and imino groups on a pentagon to form a quinoxaline *** dehydroxylative aromatization connects the fullerene cage π-system with the quinoxaline π-*** the NMR and UV-Vis spectra revealed an evident effect after the extension of the fullerene cage π-system.

关键词： moiety carbonyl react

Ultra-thin temperature controllable microwell array chip for continuous real-time high-resolution imaging of living single cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第11期32卷 3446-3449页

作者： Yuanyuan Wu Lei Zhao Yaran Chang Liang Zhao Guangsheng Guo Xiayan Wang Center of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and SeparationDepartment of Chemistry and BiologyBeijing University of TechnologyBeijing100124China Lanzhou University Second Hospital Lanzhou 730030China Minzu University of China Beijing 100081China

Single-cell imaging,a powerful analytical method to study single-cell behavior,such as gene expression and protein profiling,provides an essential basis for modern medical *** coding and localization function of microfluidic chips has been developed and applied in living single-cell imaging in recent ***,chip-based living single-cell imaging is also limited by complicated trapping steps,low cell utilization,and difficult high-resolution *** solve these problems,an ultra-thin temperature-controllable microwell array chip(UTCMA chip)was designed to develop a living single-cell workstation in this study for continuous on-chip culture and real-time high-resolution imaging of living single *** chip-based on ultra-thin ITO glass is highly matched with an inverted microscope(or confocal microscope)with a high magnification objective(100×oil lens),and the temperature of the chip can be controlled by combining it with a home-made temperature control ***-throughput single-cell patterning is realized in one step when the microwell array on the chip uses hydrophilic glass as the substrate and hydrophobic SU-8 photoresist as the *** cell utilization rate,single-cell capture rate,and microwell occupancy rate are all close to 100%in the microwell *** method will be useful in rare single-cell research,extending its application in the biological and medical-related fields,such as early diagnosis of disease,personalized therapy,and research-based on single-cell analysis.

关键词： Ultra-thin microchip Temperature controllable Living single cells One-step patterning Continuous culture High-resolution imaging

Single-cell mass spectrometry studies of drug metabolism heterogeneity and primary resistance to gefitinib in non-small cell lung cancer cells

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第2期35卷 436-440页

作者： Guizhen Zhu Yaoyao Zhao Wenmei Zhang Yuanyuan Wu Yuanxing Liu Guangsheng Guo Xiayan Wang Zhihong Liu Center of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and SeparationDepartment of ChemistryBeijing University of TechnologyBeijing 100124China Minzu University of China Beijing 100081China Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Health Science and EngineeringHubei UniversityWuhan 430062China

Patients with epidermal growth factor receptor(EGFR)wild-type non-small cell lung cancer(NSCLC)often show primary resistance to gefitinib *** is thus necessary to study the metabolism of gefitinib in NSCLC cells to comprehensively reveal the reasons for the primary resistance of ***,we develop a platform for studying drug metabolism heterogeneity based on single-cell mass spectrometry(sDMH-scMS)by integrating living-cell electrolaunching ionization MS(ILCEI-MS)and high-performance liquid chromatography-MS(HPLC-MS)analysis,and the primary resistance of NSCLC cells to gefitinib was studied using this *** ILCEI-MS analysis showed that approximately 11.9%of NSCLC single cells contained the gefitinib metabolite M11;HPLC-MS detection diluted the intensity of M11 in subpopulations and concealed the heterogeneity of drug metabolism in tumor single *** intensity of gefitinib in EGFR wild-type A549 cells was markedly lower than in mutant PC9 cells,and the intensity of gefitinib metabolites was significantly higher than in PC9 cells,suggesting that the primary resistance of NSCLC cells is related to gefitinib ***,the combination of gefitinib and the drug-metabolizing enzyme inhibitorα-naphthoflavone was shown to overcome the primary resistance of the NSCLC ***,the results of this study are expected to be applicable for clinical drug resistance diagnosis and treatment at the single-cell level.

关键词： Single-cell mass spectrometry Drug metabolism Non-small cell lung cancer Gefitinib Primary resistance

A pico-HPLC-LIF system for the amplification-free determination of multiple miRNAs in cells

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第7期32卷 2183-2186页

作者： Wenmei Zhang Zunsheng Han Yingqi Liang Qi Zhang Xiangnan Dou Guangsheng Guo Xiayan Wang Center of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and SeparationDepartment of Chemistry and BiologyBeijing University of Technology.Beijing 100124China State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

MicroRNAs are a class of important biomarkers,and the simultaneous detection of multiple miRNAs can provide valuable information about many diseases and biological ***-free determination has been developed for the analysis of multiple miRNAs because of its characteristic low cost and high ***,a method for the amplification-free analysis and simultaneous detection of multiple miRNAs based on a so-called pico-HPLC-LIF system is *** this process,a bare open capilla ry with an inner diameter of 680 nm is used as a sepa ration column for a sample volume of several hundreds of femtoliters(300 fL),followed by separation and *** technique has a zeptomolar limit of *** method was applied to detect cellular miRNA from adenocarcinomic human alveolar basal epithelial(A549)cell extracts,and the simultaneous detection of the mir-182,miR-155,and let-7 a was *** results showed that the expression of mir-182 and miR-155 was up-regulated and that of let-7 a was down-regulated in A549 *** method for multiple miRNAs detection is expected to have broad applications in miRNA-based disease diagnosis,prognosis,treatment,and monitoring.

关键词： Multiple miRNAs Amplification-free Pico-HPLC Nanocapillary Laser-induced fluorescence

Dynamic multi-objective differential evolution algorithm based on the information of evolution progress

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2021年第8期64卷 1676-1689页

作者： HOU Ying WU YiLin LIU Zheng HAN HongGui WANG Pu Faculty of Information Technology Beijing University of TechnologyBeijing100124China Engineering Research Center of Digital Community Ministry of EducationBeijing100124China

The multi-objective differential evolution(MODE)algorithm is an effective method to solve multi-objective optimization ***,in the absence of any information of evolution progress,the optimization strategy of the MODE algorithm still appears as an open *** this paper,a dynamic multi-objective differential evolution algorithm,based on the information of evolution progress(DMODE-IEP),is developed to improve the optimization *** main contributions of DMODE-IEP are as ***,the information of evolution progress,using the fitness values,is proposed to describe the evolution progress of ***,the dynamic adjustment mechanisms of evolution parameter values,mutation strategies and selection parameter value based on the information of evolution progress,are designed to balance the global exploration ability and the local exploitation ***,the convergence of DMODE-IEP is proved using the probability ***,the testing results on the standard multi-objective optimization problem and the wastewater treatment process verify that the optimization effect of DMODE-IEP algorithm is superior to the other compared state-of-the-art multi-objective optimization algorithms,including the quality of the solutions,and the optimization speed of the algorithm.

关键词： information of evolution progress multi-objective differential evolution algorithm optimization effect optimization speed convergence

Association between Life’s Essential 8 and Cerebral Small Vessel Disease

在线全文

学校读者我要写书评

暂无评论

Stroke & Vascular Neurology 2024年第5期9卷 481-489页

作者： Dandan Liu Xueli Cai Yingying Yang Suying Wang Lerong Mei Jing Jing Shan Li Mengxing Wang Yun Chen Xia Meng Tiemin Wei Yongjun Wang Yilong Wang Yuesong Pan Department of Neurology Beijing Tiantan HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalBeijingChina Department of Clinical Epidemiology and Clinical Trial Capital Medical UniversityBeijingPeople's Republic of China Department of Neurology The Fifth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina Lishui Clinical Research Center for Neurological Diseases The Fifth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina Cerebrovascular Research Lab The Fifth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina Department of Cardiology The Fifth Affiliated Hospital of Wenzhou Medical UniversityLishuiChina Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijingChina Chinese Institute for Brain Research BeijingChina beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease BeijingChina

Background Given that associations of Life’s Essential 8(LE8)and cerebral small vessel disease(CSVD)or its imaging markers were unclear,we examined relationship between *** The cross-sectional study included community residents from the PolyvasculaR Evaluation for Cognitive Impairment and vaScular Events *** calculated the total LE8 score,medical LE8 score and behavioural score,and categorised them into low(10)was allocated one *** on modified total CSVD score(0–6 points),WMH or CMB was modified to three grades,and BG-EPVS(N>20)was allocated one *** Among 3061 participants in this study,1424(46.5%)were *** LE8 score was associated with lower total CSVD score(moderate vs low:cOR 0.78,95%CI 0.63 to 0.96;high vs low:cOR 0.44,95%CI 0.33 to 0.59),and the medical score was inversely related to the total CSVD ***,the medical score was inversely related to odds of WMH(p<0.05),modified WMH(p<0.05),lacunes(p<0.05)or BG-EPVS(p<0.05),and the behavioural score were inversely related to the odds of lacunes and *** Higher LE8 score which indicates better cardiovascular status was associated with lower burden of CSVD and its MRI *** studies are needed to examine the causality.

关键词： cerebral behaviour Essential