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Merging polymers of intrinsic microporosity and porous carbon-based zinc oxide composites in novel mixed matrix membranes for efficient gas separation

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Green Energy & Environment 2025年第1期10卷 203-213页

作者： Muning Chen jiemei zhou Jing Ma Weigang Zheng Guanying Dong Xin Li Zhihong Tian Yatao Zhang Jing Wang Yong Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou450001HenanChina State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering Nanjing Tech UniversityNanjing211816JiangsuChina Singapore Membrane Technology Centre Nanyang Environment and Water Research InstituteNanyang Technological UniversitySingapore637141Singapore Engineering Research Center for Nanomaterials Henan UniversityKaifeng475004HenanChina State Key Laboratory of Coking Coal Resources Green Exploitation Zhengzhou UniversityZhengzhou 450001China School of Energy and Environment Southeast UniversityNanjing210096JiangsuChina

Mixed matrix membranes(MMMs)have demonstrated significant promise in energy-intensive gas separations by amalgamating the unique properties of fillers with the facile processability of ***,achieving a simultaneous enhancement of permeability and selectivity remains a formidable challenge,due to the difficulty of achieving an optimal match between polymers and *** this study,we incorporate a porous carbon-based zinc oxide composite(C@ZnO)into high-permeability polymers of intrinsic microporosity(PIMs)to fabricate *** dipole–dipole interaction between C@ZnO and PIMs ensures their exceptional compatibility,mitigating the formation of non-selective voids in the resulting ***,C@ZnO with abundant interconnected pores can provide additional low-resistance pathways for gas transport in *** a result,the CO_(2) permeability of the optimized C@ZnO/PIM-1 MMMs is elevated to 13,215 barrer,while the CO_(2)/N_(2) and CO_(2)/CH4 selectivity reached 21.5 and 14.4,respectively,substantially surpassing the 2008 Robeson upper ***,molecular simulation results further corroborate that the augmented membrane gas selectivity is attributed to the superior CO_(2) affinity of C@*** summary,we believe that this work not only expands the application of MMMs for gas separation but also heralds a paradigm shift in the application of porous carbon materials.

关键词： Mixed matrix membranes Polymers of intrinsic microporosity CO_(2)separation Porous carbon materials

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Selective swelling of polysulfone/poly(ethylene glycol) block copolymer towards fouling-resistant ultrafiltration membranes

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Chinese Journal of Chemical Engineering 2020年第1期28卷 98-103页

作者： Hao Yang jiemei zhou Zhaogen Wang Xiansong Shi Yong Wang State Key Laboratory of Materials-Oriented Chemical Engineering Jiangsu National Synergetic Innovation Center for Advanced MaterialsCollege of Chemical EngineeringNanjing Tech UniversityNanjing 211816China

Fouling resistance of ultrafiltration(UF) membranes is critical for their long-term usages in terms of stable performance, so convenient approaches to prepare fouling-resistant membranes are always anticipated. Herein, we demonstrate the facile fabrication of antifouling polysulfone-block-poly(ethylene glycol)(PSF-b-PEG, SFEG)composite membranes. SFEG layer was coated onto macroporous supports and cavitated by immerging them in acetone/n-propanol following the mechanism of selective swelling induced pore generation. Thus-produced SFEG membranes possessed high permeance and excellent mechanical strength. Meanwhile, the structures and separation performances of the SFEG layers can be continuously tuned through simply changing swelling durations. More importantly, the hydrophilic PEG chains were spontaneously enriched onto the pore walls through swelling treatment, endowing intrinsic antifouling property to the SFEG membranes. Bovine serum albumin(BSA)/humic acid(HA) fouling tests proved the prominent fouling resistance of SFEG membranes, and the fouling resistance is expected to be long-standing because of the firm connection between PEG chains and PSF matrix by covalent bonding.

关键词： Polysulfone-block-poly(ethylene glycol) Block copolymer Fouling resistance Selective swelling Ultrafiltration membrane

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Preparation of polysulfone-based block copolymer ultrafiltration membranes by selective swelling and sacrificing nanofillers

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Frontiers of Chemical Science and Engineering 2022年第5期16卷 745-754页

作者： Shanshan Zhang jiemei zhou Zhaogen Wang Jianzhong Xia Yong Wang State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Institute for Advanced Study Shenzhen UniversityShenzhen 518060China Beijing OriginWater Membrane Technology Co. Ltd.Beijing 101407China

Selective swelling of block copolymers of polysulfone-b-poly(ethylene glycol)is an emerging strategy to prepare new types of polysulfone ultrafiltration ***,we prepared nanoporous polysulfoneb-poly(ethylene glycol)ultrafiltration membranes by selective swelling and further promoted their porosity and ultrafiltration performances by using CaCO_(3) nanoparticles as the sacrificial *** contents of CaCO_(3) nanoparticles were doped into the solution of polysulfone-b-poly(ethylene glycol),and thus obtained suspensions were used to prepare both self-supported and bi-layered composite *** swelling was performed on the obtained block copolymer structures in the solvent pair of ethanol/acetone,producing nanoporous membranes with poly(ethylene glycol)lined along pore *** CaCO_(3) nanoparticles dispersed in polysulfoneb-poly(ethylene glycol)were subsequently etched away by hydrochloric acid and the spaces initially occupied by CaCO_(3) provided extra pores to the block copolymer *** porosity of the membranes was increased with increasing CaCO_(3) content up to 41%,but further increase in the CaCO_(3) content led to partial collapse of the *** sacrificial CaCO_(3) particles provided extra pores and enhanced the connectivity between adjacent ***,the membranes prepared under optimized conditions exhibited up to 80%increase in water permeance with slight decrease in rejection compared to neat membranes without the use of sacrificial CaCO_(3) particles.

关键词： block copolymers selective swelling ultrafiltration CaCO_(3)nanoparticles sacrificial nanofillers

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一种联合设计的宽带天线-滤波器模块

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固体电子学研究与进展 2010年第2期30卷 199-203页

作者：周杰美王俊王卫东中国科学技术大学电子工程与信息科学系合肥230027

联合设计了一种宽带天线-滤波器模块,理论分析了将天线与滤波器进行联合设计能够提高整体性能的原因,且提出了若干设计基本原则,联合设计的宽带天线-滤波器模块的回波损耗在3.1~5.1 GH z的工作频带内比独立设计后直接级联的模块减少了10... 详细信息

联合设计了一种宽带天线-滤波器模块,理论分析了将天线与滤波器进行联合设计能够提高整体性能的原因,且提出了若干设计基本原则,联合设计的宽带天线-滤波器模块的回波损耗在3.1~5.1 GH z的工作频带内比独立设计后直接级联的模块减少了10 dB以上,该模块已应用于超宽带通信实验系统中。

关键词：联合设计宽带天线滤波器

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流程化护理干预对重症支气管哮喘急救预后和睡眠质量的影响研究

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世界睡眠医学杂志 2021年第2期8卷 325-326页

作者：周桔梅厦门市儿童医院重症医学科厦门361006

目的:探究流程化护理干预对重症支气管哮喘急救预后和睡眠质量的影响。方法:选取2019年1月至2020年厦门市儿童医院收治的重症支气管哮喘患儿74例作为研究对象,随机分成观察组和对照组,每组37例,分别采取流程化护理干预和常规护理。观察... 详细信息

目的:探究流程化护理干预对重症支气管哮喘急救预后和睡眠质量的影响。方法:选取2019年1月至2020年厦门市儿童医院收治的重症支气管哮喘患儿74例作为研究对象,随机分成观察组和对照组,每组37例,分别采取流程化护理干预和常规护理。观察比较2组患儿的急救情况和护理前后患儿的睡眠质量。结果:与对照组比较,观察组患儿的急救时间更短,有效急救率更高,2组间进行比较差异有统计学意义(P<0.05);护理后观察组患儿的睡眠质量明显改善,差异有统计学意义(P<0.05)。结论:对重症支气管哮喘患儿采取流程化护理干预,可以显著提升急救效果,及时帮助患儿缓解不适,并且患儿的睡眠质量也得到明显改善,护理应用效果较好,值得推广。

关键词：流程化护理重症支气管哮喘睡眠质量

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上海市产业园区环境准入清单编制研究

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环境与发展 2020年第7期32卷 234-235页

作者：周洁玫上海市环境科学研究院上海200233

产业园区作为资源能源消耗和污染物排放的高度密集区域,始终是环境管控的重点区域。编制产业园区环境准入清单,精准定位园区突出问题,制定针对性的环境管控要求,是实现源头预防、促进园区高质量发展的重要手段。本文通过识别上海市各类... 详细信息

产业园区作为资源能源消耗和污染物排放的高度密集区域,始终是环境管控的重点区域。编制产业园区环境准入清单,精准定位园区突出问题,制定针对性的环境管控要求,是实现源头预防、促进园区高质量发展的重要手段。本文通过识别上海市各类产业园区的典型环境问题,基于各类园区在产业、环境方面的主要差异,以保障生态空间、改善环境质量、促进区域产城融合发展为目标,从空间布局约束、污染物排放控制、环境风险防范、资源利用效率等方面提出差别化环境准入清单编制建议,为各类产业园区环境管理与决策提供参考。

关键词：产业园区环境准入清单

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生态环境分区管控跟踪评估技术及应用探索——以上海市为试点

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环境影响评价 2024年第3期46卷 37-42页

作者：周洁玫鲍仙华上海市环境科学研究院上海200233

开展生态环境分区管控跟踪评估是推动生态环境分区管控制度落地生效的重要手段。本研究探讨了省、市层级和环境管控单元层级的生态环境分区管控实施情况跟踪评估体系。根据国家生态环境分区管控制度建设目标,结合管理实际,提出了省、市... 详细信息

开展生态环境分区管控跟踪评估是推动生态环境分区管控制度落地生效的重要手段。本研究探讨了省、市层级和环境管控单元层级的生态环境分区管控实施情况跟踪评估体系。根据国家生态环境分区管控制度建设目标,结合管理实际,提出了省、市层级生态环境分区管控跟踪评估指标体系构建及实施机制的初步设想;提出了环境管控单元层级生态环境分区管控跟踪评估指标体系、实施机制及评估结果应用场景,以上海市产业园区生态环境分区管控及规划环评实施情况跟踪评估为试点,分析了实施成效,可为各省份、地级市开展生态环境分区管控跟踪评估工作、构建全链条环评管理体系提供参考。

关键词：生态环境分区管控跟踪评估指标体系环境管控单元

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“三线一单”大气管控单元划分法在上海的应用

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环境影响评价 2020年第1期42卷 38-42页

作者：严茹莎安静宇朱润非周洁玫黄成鲍仙华上海市环境科学研究院上海200233 国家环境保护城市大气复合污染成因与防治重点实验室上海200233

本研究基于“三线一单”编制技术要求计算了上海市2017年大气污染物排放量,其中SO2排放量为6. 28万吨、NOX排放量为31. 50万吨、VOCs排放量为33. 38万吨、一次PM2. 5排放量为5. 09万吨、NH3的排放量为8. 17万吨。根据上海市污染源排放特... 详细信息

本研究基于“三线一单”编制技术要求计算了上海市2017年大气污染物排放量,其中SO2排放量为6. 28万吨、NOX排放量为31. 50万吨、VOCs排放量为33. 38万吨、一次PM2. 5排放量为5. 09万吨、NH3的排放量为8. 17万吨。根据上海市污染源排放特征,划分了大气环境管控单元,其中包括6个大气优先保护区、115个大气重点管控区以及1个大气环境一般管控区,其中大气重点管控区分为高排放区和受体敏感区。

关键词： “三线一单” 管控单元大气环境

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Pan-cancer Analysis Reveals m^(6)A Variation and Cell-specific Regulatory Network in Different Cancer Types

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Genomics, Proteomics & Bioinformatics 2024年第4期22卷 133-146页

作者： Yao Lin Jingyi Li Shuaiyi Liang Yaxin Chen Yueqi Li Yixian Cun Lei Tian Yuanli zhou Yitong Chen jiemei Chu Hubin Chen Qiang Luo Ruili Zheng Gang Wang Hao Liang Ping Cui Sanqi An Life Sciences Institute Biosafety Level-3 LaboratoryGuangxi Medical UniversityNanning 530021China Department of Pathology Guangdong Second Provincial General HospitalGuangzhou 510317China Department of Bioinformatics Anjin Biotechnology Co.Ltd.Guangzhou 510000China Frontiers Science Center for Disease-related Molecular Network Precision Medicine Research CenterWest China HospitalDepartment of Respiratory and Critical Care MedicineSichuan UniversityChengdu 610041China School of Basic Medical Sciences Guangxi Medical UniversityNanning 530021China Department of Medical Bioinformatics Zhongshan School of MedicineSun Yat-sen UniversityGuangzhou 510080China The First Affiliated Hospital of Guangxi Medical University Nanning 530021China

As the most abundant messenger RNA(mRNA)modification,N^(6)-methyladenosine(m^(6) A)plays a crucial role in RNA fate,impacting cellular and physiological processes in various tumor ***,our understanding of the role of the m^(6) A methylome in tumor heterogeneity remains ***,we collected and analyzed m^(6) A methylomes across nine human tissues from 97 m^(6) A sequencing(m^(6) A-seq)and RNA sequencing(RNA-seq)*** findings demonstrate that m^(6) A exhibits different heterogeneity in most tumor tissues compared to normal tissues,which contributes to the diverse clinical outcomes in different cancer *** also found that the cancer type-specific m^(6) A level regulated the expression of different cancer-related genes in distinct cancer *** a novel and reliable method called“m^(6) A-express”,we predicted m^(6) A-regulated genes and revealed that cancer type-specific m^(6) A-regulated genes contributed to the prognosis,tumor origin,and infiltration level of immune cells in diverse patient ***,we identified cell-specific m^(6) A regulators that regulate cancer-specific m^(6) A and constructed a regulatory *** validation was performed,confirming that the cell-specific m^(6) A regulator CAPRIN1 controls the m^(6) A level of ***,our work reveals the clinical relevance of m^(6) A in various tumor tissues and explains how such heterogeneity is *** results further suggest the potential of m^(6) A in cancer precision medicine for patients with different cancer types.

关键词： N^(6)-methyladenosine Heterogeneity m^(6)A-regulated gene m^(6)A regulator Cell-specific

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Research Progress of Total Flavonoids from Plants in ***

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Agricultural Biotechnology 2023年第6期12卷 12-18页

作者： jiemei LIANG Li LI Lanlan FAN Hua ZHU Qiaowen zhou Mingjuan HUANG Qiulian WU Xue WANG Guangxi University of Chinese Medicine Nanning 530200China Guangxi Key Laboratory of Zhuang and Yao Medicine Nanning 530200China

*** is one of the important medicinal plants in traditional *** are 41 genera,6 genera of which are produced in China,mainly distributed in Southwest China,South China and Central South *** are many kinds of plants in this family,and 22 species can be used as Chinese medicinal materials in *** branches and leaves of *** are rich in flavonoids,alkaloids,terpenoids,polysaccharides,organic acids and other functional substances,among which flavonoids are one of the important chemical components to exert pharmacological activity,and play an important role in hypoglycemic,lipid-lowering,anti-inflammatory,anti-tumor,anti-oxidation,anti-osteoporosis and so *** this paper,the chemical composition,extraction method,component analysis and pharmacological action of flavonoids in *** plants were reviewed,in order to provide scientific reference for further development and clinical application of flavonoids in *** plants.

关键词： Trib.Lorantheae Total flavonoids Extraction techniques Analytic procedure Pharmacological effect

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