检索结果-南通市图书馆

黄金 2024年第1期45卷 93-98,106页

作者：杨敏杨兵陈华清聂兴信张鑫贺攀阳西安建筑科技大学资源工程学院中国地质调查局西安地质调查中心

旬阳铅锌矿带铅锌矿资源多年粗放式开发,导致地质环境问题逐步显现,主要表现为由采矿活动引发的地质环境污染、矿山土地资源损毁及矿山地质灾害隐患等。对旬阳铅锌矿带环境问题现状进行了详细分析和总结,并提出相应的地质环境治理对策。

关键词：旬阳铅锌矿带矿山地质环境治理对策环境污染地质灾害

维普期刊数据库博看期刊

Water contents and hydrogen isotopes in nominally anhydrous minerals from UHP metamorphic rocks in the Dabie-Sulu orogenic belt

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2013年第22期58卷 4384-4389页

作者： GONG bing chen RenXu ZHENG YongFei CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space Sciences University of Science and Technology of China

A continuous flow method,by a combination of thermal conversion elemental analyzer(TC/EA)with isotope ratio mass spectrometry(MS),was developed to determine both H isotope composition and H2O concentration of ultrahigh-pressure(UHP)metamorphic rocks in the Dabie-Sulu orogenic *** using the developed step-heating technique,we have studied H2O concentration and H isotope composition of the different forms of water(structural OH and molecular H2O)in *** quantitative measurements of H2O concentration and H isotope composition of minerals in UHP metamorphic rocks from several typical outcrops indicate that the gneisses can release more amounts of water than the eclogites during exhumation of the deeply subducted continental ***,by decompression dehydration at the contact between eclogite and gneiss,the released water could flow from the gneiss to the eclogite and result in significant hydration of the eclogite adjacent to the *** measured maximum water contents of minerals in eclogites indicate that garnet and omphacite have the maximum water solubilities of 2500and 3500 ppm,respectively,under the peak UHP metamorphic conditions.

关键词：超高压变质岩苏鲁造山带氢同位素矿物质无水水含量同位素组成利用开发

同方期刊数据库

Modulated noble metal/2D MOF heterostructures for improved hydrogen storage of MgH_(2)

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第4期43卷 1672-1685页

作者： Zeng-Yi Li Li-Xian Sun Fen Xu Yu-Mei Luo Yong-Peng Xia Sheng Wei chen-chen Zhang Ri-Guang cheng Chao-Feng Ye Meng-Yuan Liu Ju-Lan Zeng Zhong Cao Hong-Ge Pan School of Material Science and Engineering Guilin University of Electronic TechnologyGuilin541004China School of Chemistry and Chemical Engineering Changsha University of Science and TechnologyChangsha410114China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an710021China

The conjugation of external species with twodimensional(2D)materials has broad application *** this study,we have explored the potential of noble metal/2D MOF heterostructures in hydrogen ***,the MgH_(2)-Ni-MOF@Pd system has shown remarkable hydrogen desorption/sorption performances,starting to liberate hydrogen at 1810C,which is 2300C lower than that of pristine *** the catalytic effect of Ni-MOF@Pd,the dehydrogenation apparent activation energy of MgH2 is noticeably decreased from(133.5±17.5)to(34.58±1.87)kJ·moL^(-1),and the hydrogenation apparent activation energy is reduced from(70.41±7.43)to(25.78±4.64)kJ·moL^(-1),which is lowered by 63.4%.The fully-dehydrogenated MgH2-NiMOF@Pd composite rapidly uptakes hydrogen,with 2.62wt%at 100℃and 6.06 wt%at 150℃within 300 s,*** mechanism analysis of MgH2 catalyzed by Ni-MOF@Pd has revealed that the transformation of Mg_2Ni and Mg_2NiH_4 could act as a"hydrogen pump",providing numerous channels for fast diffusion and transport of hydrogen ***,in the dehydrogenation process,the element Pd reacts with MgH_(2)to form the MgPd alloy phase,which makes MgH_(2)take precedence to decompose through the Mg-Pd alloy rather than self-decomposition,further reducing thermal stability and improving de/hydrogenation *** synergistic effect of Mg-Pd,Mg_2Ni,and the special ultra-thin 2D sheet structure of the additive is the main reason for the good hydrogen storage property of MgH_(2)-Ni-MOF@*** findings provide inspiration for designing efficient multifunctional additives with unique morphologies to optimize the hydrogen desorption/sorption behaviors of hydrogen storage materials.

关键词： Hydrogen storage Magnesium hydride 2D metal-organic framework nanosheets Ni/Pd Synergistic catalysis

Book Review of A Rainbow in the Mountains:Dress of the Yao—A Guide to Traditional Yao Costumes and Ornaments

在线全文

学校读者我要写书评

暂无评论

Contemporary Social Sciences 2023年第1期8卷 144-155页

作者： chen bing Guangxi University

A Rainbow in the Mountains:Dress of the Yao,an album of pictures and texts on Yao clothing,the most comprehensive and systematic record of the dazzling costumes of the Yao ethnic minority which has been inscribed on the national intangible cultural heritage list of China since 2006,is of great academic value and practical significance to study the profound connotation of the Yao traditional *** various styles,colorful dress customs,and exquisite craftsmanship constitute the beautiful cultural landscape within the Yao ethnic minority,as well as the way to explore all the social aspects of the Yao ethnic *** book review aims to arouse the attention of all sectors of the community to the clothing of the Yao ethnic minority,which has met the greatest challenge of the collection and protection of the Yao costumes and *** it is expected to sort out and retain those precious records that have been drifting away via pictures and texts,which we have already started and will continue to do in accord with the national cultural development strategy.

关键词： the Yao ethnic minority costumes and ornaments intangible cultural heritage

Can kissing cause paraquat poisoning: A case report and review of literature

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2021年第20期9卷 5588-5593页

作者： bing Lv Dong-Feng Han Jing chen Hai-Bin Zhao Xiao-Liang Liu Emergency Department First Hospital of Jilin UniversityChangchun 130000Jilin ProvinceChina Department of Endocrinology and Nephrology Central Hospital of TonghuaTonghua 134000Jilin ProvinceChina

BACKGROUND Paraquat is an effective,broad-spectrum,highly toxic quaternary ammonium *** poisoning has been reported frequently in recent *** has severe lung,kidney,liver,and nervous system toxicity,and there is currently no specific *** poisoning may follow ingestion,inhalation,and skin *** have been no previous reports of paraquat poisoning that resulted from *** rare case provides a new reference for the prevention of paraquat *** SUMMARY A 27-year-old man came to the emergency department complaining that he had come into contact with paraquat by kissing his girlfriend,who had taken 80-120 mL 20%*** admission,his lung computed tomography(CT)showed increased lung *** and a burning sensation developed on his tongue,which progressed to painful erosions and coalescent *** final diagnosis was mild paraquat ***-inflammatory,antioxidant,and symptomatic treatment were initiated and continued for 7 *** did not occur,subsequent lung CT showed no significant changes,and the tongue pain was slightly *** month after discharge,the tongue injury was *** This case indicated that the tongue and lung tissues are particularly vulnerable to paraquat toxicity,even after a limited exposure.

关键词： Paraquat Poisoning Pesticides Tongue Lung Case report

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

口腔黏膜给药制剂质量评价要点及标准现状

中国药品标准 2024年第3期25卷 220-226页

作者：杨柳榴李铭岩张隽齐王兵尚悦陈芳中国医药工业研究总院医药先进制造国家工程研究中心上海201203 国家药典委员会北京100061

口腔黏膜给药制剂具有给药方便、利于吞咽困难的患者、快速起效和避免肝脏首过效应等优点。《中国药典》2020年版、EP11.0、BP2022、USP44-NF39、JP18均收载了对不同口腔黏膜给药制剂进行质量控制的相关标准。本文比较了不同国家收载的... 详细信息

口腔黏膜给药制剂具有给药方便、利于吞咽困难的患者、快速起效和避免肝脏首过效应等优点。《中国药典》2020年版、EP11.0、BP2022、USP44-NF39、JP18均收载了对不同口腔黏膜给药制剂进行质量控制的相关标准。本文比较了不同国家收载的口腔黏膜制剂通则的差异,并对国内外上市及药典收载的口腔黏膜制剂检查项目进行梳理。国外药典收载的口腔黏膜给药制剂品种较多,对作用于全身的口腔黏膜给药制剂的质量控制更为精细,可为我国对口腔黏膜给药制剂标准的完善和提高提供参考。

关键词：口腔黏膜给药制剂中国药典欧洲药典英国药典美国药典日本药局方

Copper-catalyzed C(sp)-H aryl amination enables modular synthesis of quinolines and 2-quinolinones

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第2期67卷 595-603页

作者： Yang Gao Haixia Li Simin Yang Yanping Huo Qian chen Xianwei Li Zhe Wang Xiao-Qiang Hu School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou510006China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory Jieyang515200China Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science School of Chemistry and Materials ScienceSouth-Central University for NationalitiesWuhan430074China

Herein,we disclose a novel copper-catalyzed C(sp)-H aryl amination of terminal alkynes with anthranils,enabling the rapid generation of highly reactive secondary N-aryl ynamines for the modular synthesis of structurally diverse C2-substituted quinolines and *** in-situ formed carbonyl-ynamines are prone to tautomerize to carbonyl-ketenimines,which can efficiently react with a series of nucleophiles,including amines,alcohols,phenols,thiols,thiophenols,active-methylene compounds,and even water to produce various quinoline derivatives with the generation of H_(2)O as a sole and green *** method also unlocks a practical route to create various quinoline-fused heterocycles and can be successfully applied to the late-stage modification of complex molecules and the concise synthesis of bioactive *** studies reveal a coppercatalyzed inner-sphere nitrene transfer process by using anthranils as novel aryl nitrene precursors.

关键词： copper catalysis anthranils C(sp)-H aryl amination carbonyl-ketenimines quinolines

Effects of rhamnolipids on bacterial communities in a dioxin-contaminated soil and the gut of earthworms added to the soil

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2023年第6期33卷 927-937页

作者： bing XIA Dan HUANG Mao YE Hao QIU Hongfeng chen Keqiang ZHAO Rongliang QIU Rongrong YING Nanjing Institute of Environmental Sciences of the Ministry of Environmental Protection(NIES) Nanjing 210042China Research Academy of Environmental Sciences of Anhui Province Hefei 230071China College of Environmental and Resource Sciences Zhejiang UniversityHangzhou 310058China Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Shanghai Jiao Tong University School of Environmental Science and EngineeringShanghai 200240China Guangdong Laboratory for Lingnan Modern Agriculture College of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China

The biosurfactants rhamnolipids and the “soil ecosystem engineers” earthworms are often used to remediate contaminated soils. However, the effects of rhamnolipids on earthworm intestinal flora and microbial community in soil containing earthworms are not clearly understood. In our study, a 21-d microcosm experiment was carried out to reveal the effects of rhamnolipids on microbial abundance, composition, and metabolism, as well as contaminant degradation capacity. Both rhamnolipids and earthworms had positive effects on soil bacteria. Rhamnolipid-amended soil(RT) showed higher bacterial abundance and metabolic activity than earthworm-amended soil(ET), while the improvement in bacterial composition and contaminant degradation capacity by rhamnolipids was lower than that by earthworms. Notably, these effects were further amplified by the combined treatment of rhamnolipids and earthworms(RET). Specifically, the bacterial abundance(log-transferred) increased from 9.5 copies g-1in the control with no addition to 10.3, 10.6, and 11.1 copies g-1in ET, RT, and RET, respectively. Compared to ET, the relative abundance of the dominant phylum, Proteobacteria, increased from 41.66% to 51.67% in RET,and more pollutant-degrading bacteria were also enriched in RET. Therefore, the increases in bacterial abundance and contaminant-degrading bacteria led to the following ranking of soil dioxin removal rate: RET(77.28%) > ET(59.83%) > RT(24.65%) > control(4.71%). Moreover, the addition of rhamnolipids enhanced the abundance of bacterial functional genes involved in metabolism and environmental information processing. In addition, the composition and diversity of bacteria in the gut of earthworms were conspicuously affected by rhamnolipids, and the relative abundance of Microbacterium and Shewanella increased significantly(P < 0.05). Therefore, this study revealed that rhamnolipids remarkably influenced the abundance, composition, and metabolism of the microbial community in earthworm g

关键词： bioremediation biosurfactant contaminant-degrading bacteria intestinal bacteria metabolic pathway metabolism microcosm experiment soil pollution

在线全文

学校读者我要写书评

暂无评论

基于人工电磁超表面的葡萄糖溶液检测装置

电子器件 2024年第2期47卷 577-581页

作者：王雅菲于兵肖锋宫昌昊陈成房佳怡南京信息工程大学电子与信息工程学院江苏南京210044 大气环境与装备技术协同创新中心江苏南京210044 南京信息工程大学人工智能学院江苏南京210044

提出了一种基于人工电磁超表面结构的葡萄糖浓度检测装置。基于经人工超表面反射的电磁波近场聚焦特性对介电常数具有的高敏感性,实现了对葡萄糖溶液浓度的高精度检测。该人工超表面结构尺寸为400×400×1 mm^(3),由20×20个具有不同电... 详细信息

提出了一种基于人工电磁超表面结构的葡萄糖浓度检测装置。基于经人工超表面反射的电磁波近场聚焦特性对介电常数具有的高敏感性,实现了对葡萄糖溶液浓度的高精度检测。该人工超表面结构尺寸为400×400×1 mm^(3),由20×20个具有不同电磁波反射相位差的异构人工电磁超表面单元组成。为验证设计的可行性,对不同浓度值的葡萄糖溶液进行了实验测试,结果表明葡萄糖浓度值的改变将导致溶液相对介电常数的改变,进而对聚焦特性产生显著的影响,葡萄糖溶液的最大检测误差低于3.8%,检测线性度优于0.96。

关键词：人工电磁超表面近场聚焦相位补偿葡萄糖溶液浓度检测

交通运输业驾驶员职业健康素养水平及影响因素分析

在线全文

学校读者我要写书评

暂无评论

中国职业医学 2024年第1期51卷 75-80页

作者：虞心阳陈惠清夏冰吴君乐杨敏广东省职业病防治院广东广州510300

目的分析交通运输业驾驶员职业健康素养(OHL)现状及其影响因素。方法采用判断抽样方法,选择880名出租车公司、客运公司、货运公司和网约平台公司的驾驶员为研究对象,采用《全国重点人群职业健康素养监测调查个人问卷》以网络问卷方式对... 详细信息

目的分析交通运输业驾驶员职业健康素养(OHL)现状及其影响因素。方法采用判断抽样方法,选择880名出租车公司、客运公司、货运公司和网约平台公司的驾驶员为研究对象,采用《全国重点人群职业健康素养监测调查个人问卷》以网络问卷方式对其OHL现状进行调查,分析OHL影响因素。结果研究对象总体OHL水平为54.32%(478/880);职业健康法律知识、职业健康保护基本知识、职业健康保护基本技能、健康工作方式与行为维度的OHL水平分别为55.34%、79.55%、58.30%和46.25%。多因素logistic回归分析结果显示,客运公司和货运公司驾驶员OHL水平均高于出租车公司驾驶员(P值均5~10年和>10年的驾驶员OHL水平均低于工龄为1~5年者(P值均<0.05)。结论交通运输业驾驶员OHL水平尚有较大提升空间;用人单位的类别、经济类型、规模和目前岗位工龄均为OHL水平的主要影响因素。

关键词：交通运输业驾驶员职业健康素养现况调查影响因素