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Simple preparation and catalytic properties of ZnO for ozonation degradation of phenol in water

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Chinese Chemical Letters 2011年第2期22卷 209-212页

作者： Yu Ming Dong Guang Li Wang ping ping jiang Ai Min Zhang Lin Yue Xiao Ming Zhang School of Chemical and Material Engineering Jiangnan University Wuxi 214122 China School of Chemistry and Chemical Engineering Key Laboratory of Mesoscopic Chemistry Nanjing University Nanjing 210093 China School of Food Science and Technology Jiangnan University Wuxi 214122 China Received 28 June 2010

ZnO particles about 200 nm were prepared through a facile hydrothermal *** with single ozonation,the degradation efficiency of phenol increased about 23.7%and the degradation efficiency of intermediates improved about four times in the presence of ZnO at 298 *** addition,the catalyst had good stability in the ozonation *** influence of temperature was investigated and it was found that the better catalysis efficiency could be obtained at lower temperature.

关键词： Organic pollutants Water treatment Ozone Catalysis

Application of hydrochemistry and strontium isotope for understanding the hydrochemical characteristics and genesis of strontium-rich groundwater in karst area,Gongcheng County,Southwest China

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Journal of Groundwater Science and Engineering 2024年第3期12卷 264-280页

作者： Mi Tang Jun Lv Shi Yu Yan Liu Shao-hong You ping-ping jiang College of Environmental Science and Engineering Guilin University of TechnologyGuilin 541004GuangxiChina Guangxi Zhuang Autonomous Region Hydrographic Centre Nanning 530023China Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area Ministry of Natural ResourcesNanning 530028China Key Laboratory of Karst Dynamics Ministry of Natural Resources&Guangxi Zhuang Autonomous RegionInstitute of Karst GeologyChinese Academy of Geological SciencesGuilin 541004GuangxiChina International Research Centre on Karst under the Auspices of UNESCO/National Center for International Research on Karst Dynamic System and Global Change Guilin 541004GuangxiChina Guilin Research Institute of Environmental Protection Sciences Guilin 541004GuangxiChina Guangxi Key Laboratory of Green Preparation and Application of Inorganic Materiais Laibin 546199GuangxiChina College of Earth Sciences Guilin University of TechnologyGuilin 541004GuangxiChin

Understanding the hydrochemical characteristics and genesis mechanisms of strontium-rich groundwater is pivotal for supporting the exploitation and utilization of natural strontium-rich *** this research,27 groundwater samples were *** analyzing major ion chemistry and strontium isotope data,and considering the hydrogeological context,various analytical approaches,including multivariate statistics,ion ratios,and isotopes,were used to reveal the characteristics and genesis mechanisms of strontium-rich groundwater in the study *** findings indicate that the predominant hydrochemical type of groundwater is HCO_(3)-Ca,with Ca^(2+)and HCO_(3)^(-)as the primary cations and *** hydrochemistry of the strontium-rich groundwater is predominantly influenced by rock weathering processes.A combination of factors,including ion exchange,and anthropogenic activities,shapes the compositional characteristics of the groundwater in the *** dissolution of calcite due to weathering emerges as the principal source of strontium in the *** ion exchange processes are not conducive to strontium enrichment in groundwater,their effect is relatively *** impact of human activities on the groundwater is minor.

关键词： Hydrochemistry analysis Strontium ^(87)Sr/^(86)Sr Groundwater Karst

Acute and chronic excitotoxicity in ischemic stroke and late-onset Alzheimer's disease

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Neural Regeneration Research 2025年第7期20卷 1981-1988页

作者： Shan ping Yu Emily Choi Michael Qjiang Ling Wei Department of Anesthesiology Emory University School of MedicineAtlantaGAUSA Center for Visual and Neurocognitive Rehabilitation Atlanta Veterans Affairs Medical CenterDecaturGAUSA

Stroke and Alzheimer's disease are common neurological disorders and often occur in the same *** comorbidity of the two neurological disorders represents a grave health threat to older *** review presents a brief background of the development of novel concepts and their clinical *** activity of glutamatergic N-methyl-D-aspartate receptors and N-methyl-D-aspartate receptor-mediated Ca^(2+)influx is critical for neuronal *** ischemic insult induces prompt and excessive glutamate release and drastic increases of intracellular Ca^(2+)mainly via N-methyl-D-aspartate receptors,particularly of those at the extrasynaptic *** Ca^(2+)-evoked neuronal cell death in the ischemic core is dominated by necrosis within a few hours and days known as acute ***,mild but sustained Ca^(2+)increases under neurodegenerative conditions such as in the distant penumbra of the ischemic brain and early stages of Alzheimer's disease are not immediately toxic,but gradually set off deteriorating Ca^(2+)-dependent signals and neuronal cell loss mostly because of activation of programmed cell death *** on the Ca^(2+)hypothesis of Alzheimer's disease and recent advances,this Ca^(2+)-activated“silent”degenerative excitotoxicity evolves from years to decades and is recognized as a unique slow and chronic *** N-methyl-D-aspartate receptor subunit GluN3A,primarily at the extrasynaptic site,serves as a gatekeeper for the N-methyl-D-aspartate receptor activity and is neuroprotective against both acute and chronic *** stroke and Alzheimer's disease,therefore,share an N-methyl-D-aspartate receptor-and Ca^(2+)-mediated mechanism,although with much different time *** is thus proposed that early interventions to control Ca^(2+)homeostasis at the preclinical stage are pivotal for individuals who are susceptible to sporadic late-onset Alzheimer's disease and Alzheimer's disease-related

关键词： Ca^(2+)hypothesis cognitive deficits hyperactivity late-onset Alzheimer's disease neurodegeneration N-methyl-D-aspartate receptors N-methyl-D-aspartate receptor subunits pathogenesis preventive treatment

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幂律非牛顿流体平面流动的数值计算

石油学报 2004年第3期25卷 75-78页

作者：刘明新沈平平袁江如中国石油勘探开发研究院北京100083

提出了一种对非牛顿流体在微观孔道中流动进行模拟计算的改进方法 ,该方法较以往的方法快速而稳定 ,从而为进行大量数值实验提供了精确而有效的手段。首先对描述不可压缩幂律流体二维流动的偏微分方程组进行变换 ,形成流函数涡度方程... 详细信息

提出了一种对非牛顿流体在微观孔道中流动进行模拟计算的改进方法 ,该方法较以往的方法快速而稳定 ,从而为进行大量数值实验提供了精确而有效的手段。首先对描述不可压缩幂律流体二维流动的偏微分方程组进行变换 ,形成流函数涡度方程组以减少未知量个数。在对微分方程组进行差分离散化的过程中 ,用不定常解法求解定常问题 ,对平流项采用迎风格式 ,用 3次样条求解速度场 ,用自动参数超松弛迭代求解流函数场。利用这一系列改进措施 ,获得了稳定快速的求解格式。给出了导出方法、计算公式以及程序框图 ,还给出了实际算例的计算结果。

关键词：非牛顿流体幂律流体微管道流动孔隙网络模型数值计算

Novel ACADVL variants resulting in mitochondrial defects in long-chain acyl-CoA dehydrogenase deficiency

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2020年第11期21卷 885-896页

作者： Ting CHEN Fan TONG Xiao-yu WU Ling ZHU Qiu-zi YI Jing ZHENG Ru-lai YANG Zheng-yan ZHAO Xiao-hui CANG Qiang SHU ping-ping JlANG Division of Medical Genetics and Genomics The Children's HospitalZhejiang University School of Medicine/National Clinical Research Center for Child HealthHangzhou 310052China Institute of Genetics and Department of Human Genetics Zhejiang University School of MedicineHangzhou 310058China

The pathogenesis of very-long-chain acyl-CoA dehydrogenase(VLCAD)deficiency is highly heterogeneous and still *** novel variants have been recently detected in the *** molecular and cellular effects of these previously unreported variants are still poorly understood and require further *** address this problem,we have evaluated the various functions and biochemical consequences of six novel missense variants that lead to mild VLCAD *** deficiencies in fatty acid oxidation(FAO)and other mitochondrial defects were observed in cells carrying one of these six variants(c.541 C>T,c.863 T>G,c.895 A>G,c.1238 T>C,c.1276 G>A,and c.1505 T>A),including reductions in mitochondrial respiratory-chain function and adenosine teriphosphate(ATP)production,and increased levels of mitochondrial reactive oxygen species(ROS).Intriguingly,higher apoptosis levels were found in cells carrying the mutant VLCAD under glucose-limited ***,the stability of the mutant homodimer was disturbed,and major conformational changes in each mutant VLCAD structure were predicted by molecular dynamics(MD)*** data presented here may provide valuable information for improving management of diagnosis and treatment of VLCAD deficiency and for a better understanding of the general molecular bases of disease variability.

关键词： Mitochondrial dysfunction Very-long-chain acyl-CoA dehydrogenase(VLCAD) β-Oxidation Molecular dynamics(MD)simulation

Breeding behavior and new locality records of White-eared Night-heron in East China

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Breeding behavior and new locality records of White-eared Ni...

环氧大豆油多元醇改性磺酸型水性聚氨酯合成与性能研究

浙江省第三届生物多样性保护与可持续发展研讨会

作者： Bi-Cheng Li, ping-ping jiang, ping Ding College of Life Sciences, Zijingang Campus of Zhejiang University, Hangzhou, 310058, Zhejiang, P. R. China State Conservation Centre for Gene Resources of Endangered Wildlife, and Key Laboratory of Conservation Genetics and Reproductive Biology for Endangered Wild Animals of the Ministry of Education, Hangzhou, P. R. China

The White-eared Night-heron (Gorsachius magnificus) is a very poorly known heron and highly endangered species. This species is known from the subtropical and tropical regions of south-east China. On 24 May 2004, six adult birds and four juveniles were found in Thousand-Islet Lake, Zhejiang Province, China. It’s a new locality records since we found this species in another place fifty years ago in Zhejiang province. Then their breeding success was first confirmed in nature

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高分子学报 2016年第11期26卷 1587-1593页

作者：盛松松蒋平平张萍波高学文唐敏艳俞晓琴包燕敏食品胶体与生物技术教育部重点实验室江南大学化学与材料工程学院无锡214122 嘉和实业(苏州)有限公司苏州215021 昆山嘉力普制版粘合剂油墨有限公司昆山215300

用2-乙基己醇(异辛醇)对环氧大豆油进行开环,生成环氧大豆油多元醇,并利用其对由异佛尔酮二异氰酸酯(IPDI)、聚己内酯二元醇(PCL)和乙二胺基乙磺酸钠(AAS)为主要合成原料的磺酸型水性聚氨酯(SWPU)进行改性,考察了不同多元醇含量对磺酸... 详细信息

用2-乙基己醇(异辛醇)对环氧大豆油进行开环,生成环氧大豆油多元醇,并利用其对由异佛尔酮二异氰酸酯(IPDI)、聚己内酯二元醇(PCL)和乙二胺基乙磺酸钠(AAS)为主要合成原料的磺酸型水性聚氨酯(SWPU)进行改性,考察了不同多元醇含量对磺酸型水性聚氨酯乳液以及胶膜性能的影响.首先,通过FTIR和1H-NMR证实了环氧大豆油多元醇的合成;然后经过粒径测试、耐水性测试、接触角测试、机械性能测试、TG测试等检测表明:磺酸型水性聚氨酯成功合成,随着多元醇含量的增加,水性聚氨酯乳液粒径逐渐增大;胶膜的吸水率逐渐减小,并趋于平缓;力学性能拉伸强度逐渐增强,而断裂伸长率下降.但当环氧大豆油多元醇添加量过大时,导致最后乳液无法分散,乳化失败.当多元醇含量与PCL质量比为0.2时,胶膜吸水率由50.14%减小至12.27%,接触角为103.3°,拉伸强度由8.16 MPa增至21.77 MPa.通过TG表明,分子结构中多元醇的引入,胶膜的耐热性有明显提高.

关键词：磺酸型水性聚氨酯环氧大豆油力学性能接触角热重分析

苯基聚倍半硅氧烷改性大豆油基聚氨酯的合成及其性能研究

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高分子学报 2015年第3期25卷 290-297页

作者：盛英佩蒋平平华静宇张杜炎邓健能何建曹志亮食品胶体与生物技术教育部重点实验室江南大学化学与材料工程学院无锡214122 广州海珥玛植物油脂有限公司广州510430

以环氧大豆油为起始原料经开环反应合成出大豆油多元醇,并与聚乙二醇（PEG-600）互混作为多元醇原料制备出植物油基聚氨酯.在预聚体合成过程中,加入不同含量的七苯基三环庚硅氧烷三硅醇,通过醇羟基与异氰酸酯基的反应,将聚倍半硅氧烷（P... 详细信息

以环氧大豆油为起始原料经开环反应合成出大豆油多元醇,并与聚乙二醇（PEG-600）互混作为多元醇原料制备出植物油基聚氨酯.在预聚体合成过程中,加入不同含量的七苯基三环庚硅氧烷三硅醇,通过醇羟基与异氰酸酯基的反应,将聚倍半硅氧烷（POSS）引入到植物油聚氨酯基体中,制备出聚氨酯（PU/POSS）纳米复合材料,并探讨纳米粒子—聚倍半硅氧烷对聚氨酯材料热稳定性,表面疏水性及力学性能的影响.热重分析（TGA）结果表明,在O2条件下,复合材料的初始降解温度Td5和最终稳定温度Tf都会提高,特别是当POSS含量达到9.27 wt%后,聚氨酯在450~500℃之间较强的失重现象消失;DSC结果表明玻璃化温度Tg随粒子含量的增加呈现先增大后减小的趋势;静态接触角测试结果表明随POSS含量的增加,材料表面的疏水、疏油性随之增大.拉伸测试结果表明POSS的引入能在一定程度上提高材料的拉伸强度.

关键词：苯基聚倍半硅氧烷环氧大豆油 PEG-600 植物油聚氨酯复合材料

Effects of high-tide roosts on wintering population of Saunders's Gull Larus saundersi

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Effects of high-tide roosts on wintering population of Saund...