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Frontiers of Environmental Science & Engineering 2015年第6期9卷 1096-1107页

作者： Wendi XU Shuhai guo Gang LI fengmei LI Bo WU Xinhong GAN Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China University of Chinese Academy of Sciences Beijing 100049 China

A combined treatment technology （DEF-BIO） using the direct electro-Fenton （DEF） process and bioremediation （BIO） was established in this study. The performance of the DEF-BIO process on the remediation of a pyrene （PYR）-contaminated soil was evaluated in a slurry reactor. The appropriate order of application was to conduct the DEF process followed by BIO, evaluated through analysis of the degradation characteristics of each process individually. In addition, the application time of the DEF process affected the efficiency of the combined process. The optimum time to apply the DEF process was determined through an analysis of the induced changes in PYR intermediates, pH, soil organic matter （SOM） and bacteria. The optimum application time of the DEF process was 6 h. All the induced changes were beneficial for the BIO phase. The removal of PYR was 91.02% for DEF- BIO after 72h, and the efficiency was almost 50% increased, compared with the individual DEF and BIO treatments. Therefore, the combined process of DEF-BIO process may be an efficient and promising method for the remediation.

关键词： direct electro-Fenton bioremediation slurryreactor combined process pyrene

Core-shell-structured Co@Co4N nanoparticles encapsulated into MnO-modified porous N-doping carbon nanocubes as bifunctional catalysts for rechargeable Zn–air batteries

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Journal of Energy Chemistry 2020年第11期29卷 52-62页

作者： fengmei Wang Huimin Zhao Yiru Ma Yu Yang Bin Li Yuanyuan Cui Ziyang guo Lei Wang Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and TechnologyCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai University.Tianjin 300071China Shimadzu China Co. LTD.Shanghai 200233China

Designing the highly catalytic activity and durable bifunctional catalysts toward oxygen reduction/evolution reaction(ORR/OER) is paramount for metal–air batteries. Metal–organic frameworks(MOFs)-based materials have attracted a great deal of attention as the potential candidate for effectively catalyzing ORR/OER due to their adjustable composition and porous structure. Herein, we first introduce the Mn species into zeolitic-imidazole frameworks(ZIFs) and then further pyrolyze the Mn-containing bimetallic ZIFs to synthesize core-shell-structured Co@Co4N nanoparticles embedded into MnO-modified porous N-doped carbon nanocubes(Co@Co4N/MnO–NC). Co@Co4N/MnO–NC exhibits the outstanding catalytic activity toward ORR and OER which is attributed to its abundant pyridinic/graphitic N and Co4N,the optimized content of MnO species, highly dispersed catalytic sites and porous carbon matrix. As a result, the Co@Co4N/MnO–NC-based Zn–air battery exhibits enhanced performances, including the high discharge capacity(762 mA h gZn-1), large power density(200.5 mW cm-2), stable potential profile over 72 h, low overpotential(<1.0 V) and superior cycling life(2800 cycles). Moreover, the belt-shaped Co@Co4N/MnO–NC cathode-based Zn–air batteries are also designed which exhibit the superb electrochemical properties at different bending/twisting conditions.

关键词： Co@Co4N nanoparticles N-doped carbon nanocubes MnO species Flexibility Zn–air battery

长三角地区背景大气CO_(2)浓度变化特征

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环境科学学报 2024年第6期44卷 236-248页

作者：胡智伟刘硕臧昆鹏郭娜林溢陈圆圆陈啸鸣兰文港温军潘凤梅陈丽涵李珊鲁嫣冉郭朋方双喜浙江工业大学环境学院杭州310014 浙江工业大学浙江碳中和创新研究院浙江省碳减排与碳监测技术国际科技合作基地杭州310014 南京信息工程大学气象灾害预报预警与评估协调创新中心南京210044

二氧化碳(CO_(2))排放增加是全球变暖的主导因素,其中人为活动排放对全球CO_(2)浓度增长的贡献越来越大,然而当前我国对城市区域的大气CO_(2)监测相对缺乏.本文利用长三角地区背景站点(大明山站,DMS)2020年9月—2022年1月的CO_(2)在线... 详细信息

二氧化碳(CO_(2))排放增加是全球变暖的主导因素,其中人为活动排放对全球CO_(2)浓度增长的贡献越来越大,然而当前我国对城市区域的大气CO_(2)监测相对缺乏.本文利用长三角地区背景站点(大明山站,DMS)2020年9月—2022年1月的CO_(2)在线观测数据,结合地面风的影响,对观测数据进行筛分,采用后向轨迹分析方法,探讨了长江三角洲地区大气CO_(2)季节浓度及源汇特征.结果表明,观测期间DMS大气CO_(2)平均浓度为(421.9±10.2)×10^(-6).CO_(2)浓度在冬季出现峰值(428.7±9.1)×10^(-6),夏季出现谷值(416.7±5.5)×10^(-6).春、夏、秋季,日变化波动分别在01:00、02:00、21:00出现峰值,在14:00、14:00、13:00出现谷值,而冬季呈相反趋势,峰值出现在13:00,谷值出现在00:***的CO_(2)浓度与风速呈显著负相关.春秋季,来自NE-ENE风向的局地风,夏冬季来自SSW-WSW的局地风,携带了较高浓度的CO_(2).白天DMS盛行上升风,不同风向CO_(2)浓度差异较大,浓度和风级呈正相关,夜晚DMS盛行下沉风,不同风向CO_(2)浓度差异不大,和风级呈负相关.此外,基于72 h后向轨迹的聚类分析发现,西南、西北和东南的气团向DMS传输的CO_(2)浓度比较均一,这表明DMS能够充分观测长三角区域混合均匀的大气本底特征.另外,潜在源区分析表明,DMS周边城市是重要的CO_(2)潜在源,人为排放对DMS大气CO_(2)浓度存在重要影响.

关键词：二氧化碳原位监测波动特征季节变化后向轨迹

丙烯酸酯类无氟防污整理剂的合成及在羊毛织物上的应用

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印染 2024年第6期50卷 48-52页

作者：郭亚丽丁凤美王庆淼何瑾馨王平陈加友李文豪邢志奇东华大学化学与化工学院国家染整工程技术研究中心上海201620 雅戈尔集团股份有限公司浙江宁波315153

为提升羊毛织物的防污性能,首先采用酸性蛋白酶对织物进行预处理来增加粗糙度,然后以甲基丙烯酰氧丙基三(三甲基硅氧烷基)硅烷(M3T)与甲基丙烯酸十八烷酯(SMA)为功能单体,合成无氟防污整理剂MS,并将其应用于羊毛织物的防污整理。整理后... 详细信息

为提升羊毛织物的防污性能,首先采用酸性蛋白酶对织物进行预处理来增加粗糙度,然后以甲基丙烯酰氧丙基三(三甲基硅氧烷基)硅烷(M3T)与甲基丙烯酸十八烷酯(SMA)为功能单体,合成无氟防污整理剂MS,并将其应用于羊毛织物的防污整理。整理后织物的水接触角由118.6°提高为150.5°,花生油润湿时间由4 s提高至3 min,具有良好的防水性能与防油污性能,且整理后织物经20次洗涤后接触角仍有141.7°,经过3000次摩擦后接触角为139.7°,具有良好的耐洗性与耐摩擦性。

关键词：功能整理蛋白酶处理无氟防污整理剂乳液聚合羊毛织物

辛芷通窍颗粒对慢性鼻窦炎小鼠鼻窦黏膜的保护机制研究

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陕西中医 2024年第3期45卷 318-322页

作者：李群真李军郭树繁燕茹董学娜马凤梅河北省中医院耳鼻喉科河北石家庄050011

目的:探讨辛芷通窍颗粒对慢性鼻窦炎(CRS)小鼠鼻窦黏膜的保护作用及相关机制。方法:将50只C57BL/6J小鼠随机分为假手术组、模型组、辛芷通窍低剂量组、辛芷通窍中剂量组、辛芷通窍高剂量组。采用开放上颌窦后接种3型荚膜型肺炎链球菌的... 详细信息

目的:探讨辛芷通窍颗粒对慢性鼻窦炎(CRS)小鼠鼻窦黏膜的保护作用及相关机制。方法:将50只C57BL/6J小鼠随机分为假手术组、模型组、辛芷通窍低剂量组、辛芷通窍中剂量组、辛芷通窍高剂量组。采用开放上颌窦后接种3型荚膜型肺炎链球菌的方法建立CRS小鼠模型。辛芷通窍低剂量组予以1.4 g/kg辛芷通窍颗粒灌胃、辛芷通窍中剂量组予以2.8 g/kg辛芷通窍颗粒灌胃、辛芷通窍高剂量组予以5.6 g/kg辛芷通窍颗粒灌胃治疗。利用ELISA法检测小鼠外周血炎症因子水平;采用RT-qPCR、Western blot法检测鼻窦黏膜中相关因子表达。结果:与假手术组相比,辛芷通窍低剂量组、辛芷通窍中剂量组、辛芷通窍高剂量组小鼠外周血炎症因子水平明显低于给药前,且窦黏膜组织中TNF-α、IL-6、IL-10、IL-16、IFN-γ的mRNA及蛋白相对表达低于模型组,差异有统计学意义(均P<0.05)。与模型组相比,辛芷通窍低剂量组、辛芷通窍中剂量组、辛芷通窍高剂量组小鼠鼻窦黏膜组织中HMGB1、NLRP3、ASC、Cleaved caspase-1蛋白表达降低,差异有统计学意义(均P<0.05)。结论:辛芷通窍颗粒呈剂量依赖性地抑制HMGB1/NLRP3信号通路激活,抑制CRS小鼠鼻窦黏膜炎症水平。

关键词：慢性鼻窦炎辛芷通窍颗粒胞内高迁移率族蛋白B1 NOD样受体蛋白3 炎症因子

Dynamic analysis of conversion from a drug-sensitivity strain to a drug ?resis tant st rain

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International Journal of Biomathematics 2018年第8期11卷 349-361页

作者： Zhong Zhao fengmei Tao Qiuying Li School of Mathematics and Statistics Huanghuai University Zhumadian 463000 Henan P. R. China School of Mathematics and Information Science Anshan Normal University A nshan 114007 Liaoning P. R. China

drug-resistant strain is given to investigate how antibiotic usage may be optimized to preserve or restore antibiotic effectiveness. This novel theoretical framework could result in an optimal criterion on how to reduce the drug resistance to a reasonable range by using the antibiotic dressing strategy. The sufficient conditions of existence of order-1 periodic solution are obtained in view of the geometrical theory of the semi-continuous dynamical system and the qualitative properties of the corresp on ding continuous system. The stability of the order-1 periodic solution is proved by means of [H. J. guo, L. S. Chen and X. Y. Song, Qualitative analysis of impulsive state feedback control to an algae-fish system with bistable property, Appl. Math. Comput. 271 (2015) 905-922]. Finally, our results are confirmed by means of numerical simulations.

关键词： Impulsive state feedback control drug-sensitivity strain order-1 periodic solution drug-resistant strain

Effects of long non-coding RNA GAS5 on proliferation and apoptosis of hepatocellular carcinoma cells through miR-26a-5p action

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Oncology and Translational Medicine 2022年第3期8卷 126-134页

作者： Zunli Yi Xiaoguang guo Xianxue Jiang fengmei Luo Pathology Department Yuechi People's HospitalGuangan 638300China Pathology Department Nanchong Central HospitalNanchong 637000China The First Department of General Surgery Yuechi People's HospitalGuangan 638300China The Second Department of General Surgery Yuechi People's HospitalGuangan 638300China

Objective Long non-coding RNAs(lncRNAs)regulate tumor development and progression by promoting tumor proliferation,invasion,and *** aim of the study was to investigate the effects of lncRNA growth arrest-special 5(GAS5)on proliferation and apoptosis of hepatocellular carcinoma(HCC)cells through miR-26a-5p *** Expression levels of GAS5 were detected in cancerous and paracancerous tissue of 80 HCC patients by *** starBase tool predicted that GAS5 had binding sites for the miRNA miR-26a-5p,which was also highly expressed in HCC *** relationship between GAS5 and miR-26a-5p was confirmed using a luciferase reporter *** role of these lncRNAs was further explored by transfecting plasmids into SMMC-7721 cells and classifying the cells as follows:NC group,GAS5 group,anti-miR-26a-5p group,and GAS5+miR-26a-5p *** proliferation,cell cycle,and apoptosis were detected in each *** relationship between miR-26a-5p and phosphatase and tensin homolog deleted on chromosome 10(PTEN)was analyzed by TargetScan database prediction and luciferase reporter *** blotting was used to quantify PTEN,phosphatidylinositol 3-kinase(PI3K),phosphorylated protein kinase B(p-Akt),cyclin D1,and human P27 protein(P27).Results GAS5 was downregulated,while miR-26a-5p was upregulated in HCC tissue compared to in paracancerous *** GAS5 levels and low miR-26a-5p levels inhibited cell proliferation,increased the number of G0/G1 phase cells,promoted cell apoptosis,promoted PTEN and P27 expression,and inhibited PI3K,P-Akt,and cyclin D1 expression at the protein *** of miR-26a-5p attenuated the effects of GAS5 upregulation on the proliferation,cell cycle,and apoptosis of HCC cells and on the expression of PTNE/PI3K/Akt signaling pathway-related *** Low GAS5 levels regulate the proliferation and apoptosis of HCC cells via the PTNE/PI3K/Akt signaling pathway and are linked to upregulation of miR-26a-5p.

关键词： lncRNA GAS5 miR-26a-5p hepatocellular carcinoma(HCC) cell proliferation cell cycle apoptosis

Vertically Aligned Silicon Carbide Nanowires/Boron Nitride Cellulose Aerogel Networks Enhanced Thermal Conductivity and Electromagnetic Absorbing of Epoxy Composites

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Nano-Micro Letters 2022年第7期14卷 209-227页

作者： Duo Pan Gui Yang Hala MAbo-Dief Jingwen Dong fengmei Su Chuntai Liu Yifan Li Ben Bin Xu Vignesh Murugadoss Nithesh Naik Salah MEl-Bahy Zeinhom MEl-Bahy Minan Huang Zhanhu guo Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002People’s Republic of China Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK Integrated Composites Laboratory(ICL) Department of Chemical and Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Advanced Materials Division Engineered Multifunctional Composites(EMC)Nanotech LLCKnoxvilleTN 37934USA College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Department of Mechanical and Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnataka 576104India Department of Chemistry Turabah University CollegeTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Chemistry Al-Azhar UniversityNasr CityCairo 11884Egypt

With the innovation of microelectronics technology, the heat dissipation problem inside the device will face a severe test. In this work, cellulose aerogel(CA) with highly enhanced thermal conductivity(TC) in vertical planes was successfully obtained by constructing a vertically aligned silicon carbide nanowires(SiC NWs)/boron nitride(BN) network via the ice template-assisted strategy. The unique network structure of SiC NWs connected to BN ensures that the TC of the composite in the vertical direction reaches 2.21 W m^(-1) K^(-1) at a low hybrid filler loading of 16.69 wt%, which was increased by 890% compared to pure epoxy(EP). In addition, relying on unique porous network structure of CA, EP-based composite also showed higher TC than other comparative samples in the horizontal direction. Meanwhile, the composite exhibits good electrically insulating with a volume electrical resistivity about 2.35 × 10^(11) Ω cm and displays excellent electromagnetic wave absorption performance with a minimum reflection loss of-21.5 dB and a wide effective absorption bandwidth(<-10 dB) from 8.8 to 11.6 GHz. Therefore, this work provides a new strategy for manufacturing polymer-based composites with excellent multifunctional performances in microelectronic packaging applications.

关键词： Epoxy Ice template Vertical alignment Thermal conductivity Multifunctionality

Progranulin regulation of autophagy contributes to its chondroprotective effect in osteoarthritis

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Genes & Diseases 2023年第4期10卷 1582-1595页

作者： Yiming Pan Yuyou Yang Mengtian Fan Cheng Chen Rong Jiang Li Liang Menglin Xian Biao Kuang Nana Geng Naibo Feng Lin Deng Wei Zheng fengmei Zhang Xiaoli Li Fengjin guo Department of Cell Biology and Genetics Core Facility of Development BiologyChongqing Medical UniversityChongqing 400016China Department of Orthopaedics The 1st Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Laboratory of Stem Cells and Tissue Engineering Chongqing Medical UniversityChongqing 400016China Department of Orthopaedics The 2nd Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Chongqing Medical University Laboratory Animal Center Chongqing Medical UniversityChongqing 400016China

Progranulin(PGRN)is a multifunctional growth factor involved in many physiolog-ical processes and disease *** apparent protective role of PGRN and the importance of chondrocyte autophagic function in the progression of osteoarthritis(OA)led us to investi-gate the role of PGRN in the regulation of chondrocyte *** knockout chondro-cytes exhibited a deficient autophagic response with limited induction following rapamycin,serum starvation,and IL-1b-induced ***-mediated anabolism and suppression of IL-1b-induced catabolism were largely abrogated in the presence of the BafA1 autophagy ***,during the process of OA,PGRN and the ATG5eATG12 conjugate form a protein complex;PGRN regulates autophagy in chondrocytes and OA through,at least partially,the interactions between PGRN and the ATG5eATG12 ***,the ATG5eATG12 conjugate is critical for cell proliferation and *** or knockout of ATG5 reduces the expression of ATG5eATG12 conjugate and inhibits the chondroprotective effect of PGRN on anabolism and *** of PGRN partially reversed this *** brief,the PGRN-mediated regulation of chondrocyte autophagy plays a key role in the chondroprotective role of PGRN in *** studies provide new insights into the pathogen-esis of OA and PGRN-associated autophagy in chondrocyte homeostasis.

关键词： Anabolism ATG12 ATG5 Autophagy Catabolism Osteoarthritis PGRN

Temporal and spatial variation in the environmental impacts of China’s resource extraction at the provincial scale

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Ecosystem Health and Sustainability 2020年第1期6卷 631-646,630页

作者： He-Ming Wang Yao Wei Shen Zhao Guang-Xin Liu fengmei Ma guo-Qiang Wang Yao Wang Xin-Zhe Wang Dong Yang Jing-Ru Liu Hong-Tao Wang Feng Shi Wei-Qiang Chen State Environmental Protection Key Laboratory of Eco-Industry Northeastern UniversityShenyangChina Land and Water Commonwealth Scientific and Industrial Research Organisation(CSIRO)CanberraAustralia Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of ScienceXiamenChina State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijingChina College of Economics and Management Shenyang Agricultural UniversityShenyangChina Institute of Science and Technology for Development of Shandong Qilu University of Technology(Shandong Academy of Sciences)JinanChina Research Centre for Eco-Environmental Sciences Chinese Academy of SciencesBeijingChina College of Architecture and Environment Sichuan UniversityChengduChina

Introduction:Over the past two decades,China has experienced rapid economic development,which has not only led to a rapid increase in the use of raw materials but has also created environmental *** research analyzes the environmental impacts of resource extraction in China at the provincial level,and fully considers the environmental impact of various resources *** addition,it is the first time to quantitatively study the spatial pattern and evolution characteristics of the environmental impacts of China’s resource extraction from multiple perspectives by means of spatial ***:The results showed that the center of gravity of abiotic depletion potential(ADP)moved northwest,respiratory inorganics(RI)moved southwest and global warming potential(GWP)moved *** results of the standard deviation ellipse showed that RI and GWP varied over time and space,while ADP showed a discrete *** addition,the distribution of the four in the northeast-southwest direction became more ***:To mitigate the environmental impacts of resource extraction,we recommend that regional governments implement measures to control environmental impacts in the provinces within the distributed ellipse and design targeted policies based on actual conditions.

关键词： Resource extraction MFA environmental impact spatial analysis China