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Incorporation of N-doped biochar into zero-valent iron for efficient reductive degradation of neonicotinoids:mechanism and performance

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Biochar 2023年第1期5卷 1343-1359页

作者： Xiangying Li Xiangyu Zhang Peng Zhang Xinhua wang Hongwen Sun Yongyue Lu Le jiao Chenglan Liu National Key Laboratory of Green Pesticide South China Agricultural University483#Wushan RoadTianhe DistrictGuangzhou 510642China MOE Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai University38#Tongyan RoadHaihe Education ParkJinnan DistrictTianjin 300350China Agro-Environmental Protection Institute Ministry of Agriculture and Rural Affairs31#Fukang RoadNankai DistrictTianjin 300191China

The extensive use of neonicotinoids on food crops for pest management has resulted in substantial environmental *** is imperative to develop an effective remediation material and technique as well as to determine the evolution pathways of ***,novel ball-milled nitrogen-doped biochar(NBC)-modified zero-valent iron(ZVI)composites(named MNBC-ZVI)were fabricated and applied to degrading *** on the characterization results,NBC incorporation introduced N-doped sites and new allying heterojunctions and achieved surface charge redistribution,rapid electron transfer,and higher hydrophobicity of ZVI *** a result,the interaction between ZVI particles and thiamethoxam(a typical neonicotinoid)was improved,and the adsorption-desorption and reductive degradation of thiamethoxam and·H generation steps were ***-ZVI could rapidly degrade 100%of 10 mg·L^(−1) thiamethoxam within 360 min,its reduction rate constant was 12.1-fold greater than that of pristine ZVI,and the electron efficiency increased from 29.7%to 57.8%.This improved reactivity and selectivity resulted from increased electron transfer,enhanced hydrophobicity,and reduced accumulation of iron ***,the degradation of neonicotinoids occurred mainly via nitrate reduction and dichlorination,and toxicity tests with degradation intermediates revealed that neonicotinoids undergo rapid ***,MNBCZVI also presented favorable tolerance to various anions,humic acid,wastewater and contaminated soil,as well as high *** work offers an efficient and economic biochar-ZVI remediation technology for the rapid degradation and detoxification of neonicotinoids,significantly contributes to knowledge on the relevant removal mechanism and further advances the synthesis of highly reactive and environmentally friendly materials.

关键词： Zero-valent iron(ZVI) Ball milling N-doped biochar Neonicotinoid degradation Electron efficiency

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高校大学生学习与职业素养状况调查分析

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中国大学生就业 2024年第6期 35-43页

作者：匡校震韩春光王效斌北京高校大学生就业创业指导中心主

基于18所高校大学生学习投入与职业素养调查数据,分析大学生课程学习投入度、职业准备度、环境支持度、学习收获度和职业素养状况及其影响因素。研究发现,高校大学生学习认知、态度与学校归属关联度高;教学质量、学习能力和职业素养提... 详细信息

基于18所高校大学生学习投入与职业素养调查数据,分析大学生课程学习投入度、职业准备度、环境支持度、学习收获度和职业素养状况及其影响因素。研究发现,高校大学生学习认知、态度与学校归属关联度高;教学质量、学习能力和职业素养提升是学生收获度高的重要因素;学生参加工作的意义体现在大学生的价值观、生涯规划和实习经历。针对存在的师生互动、专业认同度、职业素养及学习环境支持不足等问题,从课堂教学、专业建设、制度机制方面提出高校大学生职业素养提升的相关意见建议,为教育主管部门制定政策、高校培养人才、用人单位选人才以及大学生明晰自身发展提供重要的数据支撑。

关键词：高校大学生学习投入职业素养调查研究

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健脾止泻汤辅助地衣芽孢杆菌活菌颗粒、西咪替丁治疗轮状病毒性肠炎患儿的临床疗效

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四川生理科学杂志 2024年第10期46卷 2183-2185,2204页

作者：黄欢娣谢春丹汪奇伟开封市祥符区第一人民医院儿科河南开封475000 河南大学淮河医院儿科河南开封475000

目的:探讨健脾止泻汤辅助地衣芽孢杆菌活菌颗粒、西咪替丁治疗轮状病毒性肠炎(Rotavirus enteritis,RVE)患儿的临床疗效。方法:选取医院2023年1月至2023年12月收治的RVE患儿108例,随机分为常规西药组和中药辅助组,各54例。常规西药组给... 详细信息

目的:探讨健脾止泻汤辅助地衣芽孢杆菌活菌颗粒、西咪替丁治疗轮状病毒性肠炎(Rotavirus enteritis,RVE)患儿的临床疗效。方法:选取医院2023年1月至2023年12月收治的RVE患儿108例,随机分为常规西药组和中药辅助组,各54例。常规西药组给予地衣芽孢杆菌活菌颗粒和西咪替丁治疗,中药辅助组在常规西药组基础上采用健脾止泻汤辅助治疗。治疗7 d后比较两组疗效、症状改善情况、不良反应及治疗前后炎性因子白细胞介素-6(Interleukin,IL-6)、高敏C反应蛋白(Highly sensitive C-reactive protein,hs-CRP)、肿瘤坏死因子-α(Tumor necrosis factor-α,TNF-α)、晚期糖基化终末产物(Advanced glycation end products,AGEs)、肠道菌群(双歧杆菌、大肠埃希菌、乳杆菌)、肠黏膜屏障(D-乳酸、二胺氧化酶、内毒素)。结果:治疗7 d后,较常规西药组相比,中药辅助组总有效率较高为92.59%(P0.05)。结论:健脾止泻汤辅助地衣芽孢杆菌活菌颗粒、西咪替丁治疗RVE具有较好的临床疗效,可有效缓解病情,保护患儿的肠黏膜屏障,减轻炎症损伤,调节肠道菌群,且具有较高的用药安全性。

关键词：轮状病毒性肠炎地衣芽孢杆菌活菌颗粒西咪替丁健脾止泻汤

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Geoscience model service integrated workflow for rainstorm waterlogging analysis

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International Journal of Digital Earth 2021年第7期14卷 851-873页

作者： Xicheng Tan Jingguo jiao Nengcheng Chen Fang Huang Liping Di Jinchuan wang Zongyao Sha Jin Liu School of Remote Sensing and Information Engineering Wuhan UniversityWuhanPeople’s Republic of China The State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanPeople’s Republic of China School of Resources&Environment University of Electronic Science and Technology of ChinaChengduPeople’s Republic of China Center for Spatial Information Science and Systems George Mason UniversityFairfaxVAUSA School of Computer Science Wuhan UniversityWuhanPeople’s Republic of China

This paper proposed a geoscience model service integrated workflowbased rainstorm waterlogging analysis method to overcome the defects of conventional waterlogging analysis *** this research,we studied a general OGC WPS service invoking strategy,an automatic asynchronous invoking mechanism of WPS services in the BPEL workflow,and a distributed waterlogging analysis services integrated workflow to realize the reconstruction of a waterlogging analysis model based on the proposed *** proposed method can make use of the flexible adjustment capability of the workflow and not only overcomes the inherent defects of conventional geoscience analysis methods but also realizes the integration and calculation of distributed geospatial data,models and computing resources *** method has better construction convenience,execution reliability,extensibility and intelligence potential than a conventional method and has important value for dealing with more natural disasters and environmental challenges.

关键词： Geoscience model workflow waterlogging OGC geospatial service

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Synthesis, characterization and luminescent properties of needle-like lanthanide-doped orthorhombic Y5O4F7

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Journal of Rare Earths 2013年第8期31卷 745-749页

作者： LIU Biqiu LIU Lisha GUO Kai wang jiao ZHU Linlin ZHANG Hui WEN Wen YANG Tieying ZHAO Jingtai Key Laboratory of Transparent Opto-Functional Inorganic Materials of Chinese Academy of Sciences Shanghai Institute of Ceramics Shanghai 200050 China University of Chinese Academy of Sciences Beijing 100039 China Max Planck Institute for Chemical Physics of Solids Dresden 01187 Germany Department of Materials Science Fudan University Shanghai 200433 China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China

Thermal annealing of YOH1.1F1.9 and YOH1.1F1.9：Ln3＋（Ln3＋=Eu3＋, Tb3＋ and Gd3＋） precursors in air gave access to synthe- size yttrium oxyfluoride phosphors with well-preserved needle-like morphologies. The phase purities of samples strongly depended on the thermal annealing temperature. At 600 ℃, pure Y5O4F7 with orthorhombic structure were obtained, as evidenced by powder X-ray diffraction measurement and chemical analysis. The interesting microstructure evolution of the annealed sample from well-organized nanoparticles on curly slices to microrod-bundle structure had been aroused by raising annealing temperature. The multicolor fluorescent emissions of Y5O4F7：Ln3＋ phosphors were observed, e.g. ultraviolet emission for Gd3＋, green emission for Tb3＋ and red emission for Eu3＋, which resulted from characteristic transitions of different lanthanide ions.

关键词： oxyfluoride needle-like morphology luminescence thermal annealing rare earths

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In silico design of novel proton-pump inhibitors with reduced adverse effects

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Frontiers of Medicine 2019年第2期13卷 277-284页

作者： Xiaoyi Li Hong Kang Wensheng Liu Sarita Singhal Na jiao Yong wang Lixin Zhu Ruixin Zhu Department of Gastroenterology Shanghai East HospitalSchool of Life Sciences and TechnologyTongji UniversityShanghai 200092China School of Biomedical Informatics The University of Texas Health Science Center at Houston7000 Fannin StHoustonTX 77030USA Digestive Diseases and Nutrition Center Department of PediatricsThe State University of New York at BuffaloBuffaloNY 14260USA Basic Medical College Beijing University of Chinese MedicineBeijing 100029China Genome Environment and Microbiome Community of ExcellenceThe State University of New York at BuffaloBuffaloNY 14214USA

The development of new proton-pump inhibitors (PPIs) with less adverse effects by lowering the pKa values of nitrogen atoms in pyrimidine rings has been previously suggested by our group. In this work, we proposed that new PPIs should have the following features:(1) number of ring II = number of ring I+ 1;(2) preferably five, six, or seven-membered heteroatomic ring for stability;and (3) 1

关键词： proton-pump inhibitor adverse effect pharmacological mechanism toxicological mechanism pKa calculation

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Improved hemostatic effects by Fe^(3+)modified biomimetic PLLA cotton-like mat via sodium alginate grafted with dopamine

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Bioactive Materials 2021年第8期6卷 2346-2359页

作者： Caili Lv Linlong Li Zixue jiao Huanhuan Yan Zongliang wang Zhenxu Wu Min Guo Yu wang Peibiao Zhang Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of Sciences5625 Renmin StreetChangchun130022PR China School of Applied Chemistry and Engineering University of Science and Technology of China96 Jinzhai RoadHefeiAnhui230026PR China University of Chinese Academy of Sciences 19 Yuquan RoadBeijing100049PR China

The development of an excellent,bioabsorbable hemostatic material for deep wound remains a *** this work,a biodegradable cotton-like biomimetic fibrous mat of poly(L-lactic acid)(PLLA)was made by melt ***,SD composite was prepared by cross-linking sodium alginate(SA)with dopamine(DA).It was immobilized on the fibre surface,which inspired by mussel ***,Fe^(3+)was loaded onto the 0.5SD/PLLA composite by chelation with the carboxyl of alginate and phenolic hydroxy of *** haemostasis experiment found that the hemostatic time 47 s in ***,the bleeding volume was 0.097 g and hemostatic time was 23 s when 20Fe^(3+)-0.5SD/PLLA was applied in the haemostasis of the rat *** a result of its robust hydrophilicity and bouffant cotton-like structure,it could absorb a large water from blood,which could concentrate the component of blood and reduce the clotting ***,the addition of Fe^(3+)in the 0.5SD/PLLA had a significant effect on improve hemostatic *** also displayed excellent antibacterial property for Escherichia coli and Staphylococcus ***,it possesses superior hemocompatibility,cytocompatibility and ***,20Fe^(3+)-0.5SD/PLLA has high potential application in haemostasis for clinical settings due to its outstanding properties.

关键词： PLLA Melt spinning Sodium alginate Fe^(3+) Hemostasis Antibacterial

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高压岔管衬砌混凝土施工期温控防裂研究

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水力发电 2024年第1期50卷 33-36,97页

作者：焦石磊王振红汪娟金鑫鑫张步张凯恒广东省水利电力勘测设计研究院有限公司广东广州510635 中国水利水电科学研究院结构材料研究所北京100038

高压岔管承受高压水和高速水流冲刷,为了满足这一结构和工作特点,混凝土常采用泵送混凝土,利用其强度高的优点,但其温升高、弹性模量大,且一般是早强混凝土,容易产生温度裂缝。针对这一问题,以阳江抽水蓄能电站高压岔管为例,结合结构和... 详细信息

高压岔管承受高压水和高速水流冲刷,为了满足这一结构和工作特点,混凝土常采用泵送混凝土,利用其强度高的优点,但其温升高、弹性模量大,且一般是早强混凝土,容易产生温度裂缝。针对这一问题,以阳江抽水蓄能电站高压岔管为例,结合结构和材料特点,借助三维有限单元法,对高压岔管施工期的温度应力进行研究,筛选温控防裂措施。计算结果表明,高压岔管分缝长度对防裂影响显著,同时降低入仓温度,采用内部通水降温,可起到更好的温控防裂效果。高压岔管混凝土在有通水冷却措施条件下,浇筑温度控制在26℃以内,最小安全系数可达1.50以上,可作为工程现场浇筑施工方案。

关键词：高压岔管衬砌混凝土施工期防裂分缝长度浇筑温度仿真计算

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Inhibition of Erythroid Differentiation of Human Leukemia K562 Cells by N-acetylcysteine and Ascorbic Acid through Downregulation of ROS

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Biomedical and Environmental Sciences 2018年第3期31卷 247-251页

作者： YU chun Hong JIANG Liang wang Ying CUI Ning Xuan ZHAO Xiao YI Zong chun School of Biological Science and Medical Engineering Beihang University

This study investigated the effects of N-acetylcysteine（NAC）and ascorbic acid（AA）on hemin-induced K562 cell erythroid differentiation and the role of reactive oxygen species（ROS）in this *** increased ROS levels ... 详细信息

关键词： ROS NAC

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基于承载性能的混凝土楼盖梁板刚度影响因素分析

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华北理工大学学报（自然科学版） 2024年第4期46卷 100-109页

作者：任思霖高林王苏康李纯洁华北理工大学建筑工程学院河北唐山063210 河北省地震工程与防灾重点实验室河北唐山063210

楼盖结构承载性能的设计中,往往忽略梁板柱等因素对梁板刚度的直接影响,从而影响楼盖结构的设计精度,为了更加准确评价梁板刚度对混凝土楼盖结构承载性能的影响,利用有限元分析软件进行了模拟研究,建立不同工况下的楼盖结构,分析板的中... 详细信息

楼盖结构承载性能的设计中,往往忽略梁板柱等因素对梁板刚度的直接影响,从而影响楼盖结构的设计精度,为了更加准确评价梁板刚度对混凝土楼盖结构承载性能的影响,利用有限元分析软件进行了模拟研究,建立不同工况下的楼盖结构,分析板的中间区格的支座截面、跨中截面的弯矩分布规律,提炼出影响楼盖承载性能的主要影响因素。结果表明:梁高、板厚、梁宽、长短边跨度比对楼盖结构的中间区格的支座、跨中截面弯矩分布影响较明显;各影响因素变化时,中间区格板的主要截面弯矩最大值的位置会分别发生在截面两端和中间位置;柱截面尺寸、柱高对中间区格板的各截面弯矩分布基本无影响,截面弯矩最大值点始终在截面中点处。最终将主要影响因素进行耦合,引入刚度比的概念,为进一步进行楼盖结构承载性能的相关研究给予一定参考。

关键词：有限元分析混凝土楼盖承载性能梁板刚度刚度比

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