检索结果-内蒙古大学图书馆

Spread of plasmids carrying antibiotic resistance genes in soil-lettuce-snail food chain

environmental science and Pollution Research 2024年第23期31卷 34295-34308页

作者： Zhang, Yuan Ji, Yan Tang, Xinyue Chen, Minglong Su, Jianqiang School of Environmental Science and Engineering Suzhou University of Science and Technology Suzhou215009 China Key Laboratory of Urban Pollutant Conversion Key Laboratory of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China

Fertilization can change the composition of antibiotic resistance genes(ARGs) and their host bacteria in agricultural fields, while complex microbial activities help ARGs into crops and transmit them to humans through agricultural ***, this study constructed a farmland food chain with soil-lettuce-snail as a typical structure, added genetically engineered Pseudomonas fluorescens containing multidrug-resistant plasmid RP4 to track its spread in the farmland food chain, and used different fertilization methods to explore its influence on the spread and diffusion of ARGs and intl1 in the farmland food chain. It was found that exogenous Pseudomonas can enter plants from soil and pass into snails' intestines, and there is horizontal gene transfer phenomenon of RP4 plasmid in bacteria. At different interfaces of the constructed food chain, the addition of exogenous drug-resistant bacteria had different effects on the total abundance of ARGs and intl1. Fertilization, especially manure, not only promoted the spread of Pseudomonas aeruginosa and the transfer of RP4 plasmid levels, but also significantly increased the total abundance of ARGs and intl1 at all interfaces of the constructed food chain. The main ARGs host bacteria in the constructed food chain include Proteobacteria, Bacteroides, and Firmicutes, while Flavobacterium of Bacteroides is the unique potential host bacteria of RP4 plasmid. In conclusion, this study provides a reference for the risk assessment of ARGs transmitted to the human body through the food chain, and has important practical significance to reduce the antibiotic resistance contamination of agricultural products and ensure the safety of vegetable basket. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Lettuce

来源：评论

学校读者我要写书评

暂无评论

Molecular-level proton acceptor boosts oxygen evolution catalysis to enable efficient industrial-scale water splitting

引用

Green Energy & environment 2024年第2期9卷 344-355页

作者： Yaobin Wang Qian Lu Xinlei Ge Feng Li Le Chen Zhihui Zhang Zhengping Fu Yalin Lu Yang Song Yunfei Bu Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)UNIST-NUIST Energy and Environment Jointed Lab(UNNU)School of Environmental Science and TechnologyNanjing University of Information Science and Technology(NUIST)219 NingliuNanjing210044China Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan University220 HandanShanghai200433China Jiangsu Key Laboratory of Advanced Materials and Technology School of Petrochemical EngineeringChangzhou University1 GehuChangzhou213164China Anhui Laboratory of Advanced Photon Science and Technology University of Science and Technology of China(USTC)96 JinzhaiHefeiAnhui 230026China School of Chemistry and Chemical Engineering Nanjing University of Science and Technology200 Xiaolingwei210094China

Industrial water splitting has long been suppressed by the sluggish kinetics of the oxygen evolution reaction(OER),which requires a catalyst to be ***,we propose a molecular-level proton acceptor strategy to produce an efficient OER catalyst that can boost industrial-scale water ***-level phosphate(-PO_(4))group is introduced to modify the surface of PrBa_(0.5)Ca_(0.5)Co_(2)O_(5)+δ(PBCC).The achieved catalyst(PO_(4)-PBCC)exhibits significantly enhanced catalytic performance in alkaline *** on the X-ray absorption spectroscopy results and density functional theory(DFT)calculations,the PO_(4)on the surface,which is regarded as the Lewis base,is the key factor to overcome the kinetic limitation of the proton transfer process during the *** use of the catalyst in a membrane electrode assembly(MEA)is further evaluated for industrial-scale water splitting,and it only needs a low voltage of 1.66 V to achieve a large current density of 1 A cm^(-2).This work provides a new molecular-level strategy to develop highly efficient OER electrocatalysts for industrial applications.

关键词： Oxygen evolution reaction Nanofiber Water splitting Proton acceptor Perovskite

来源：评论

学校读者我要写书评

暂无评论

RuO_(2)/TiO_(2)/MXene with multi-heterojunctions coating on carbon cloth for high-activity chlorine evolution reaction at large current densities

引用

Nano Research 2024年第6期17卷 4764-4772页

作者： Yuhao Duan Liuxu Wei Chenyu Cai Junbao Mi Fuyuan Cao Jiaze Chen Xiaolong Li Xiujiang Pang Bin Li Lei Wang Key Laboratory of Eco-chemical Engineering Ministry of EducationInternational Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China College of Environment and Safety Engineering Qingdao University of Science and TechnologyQingdao 266042China

The chlorine evolution reaction(CER)is a crucial step in the production of chlorine gas and active chlorine by chlor-alkali ***,the endeavor to fabricate electrodes capable of yielding high current density at minimal overpotential remains a central challenge in advancing the realm of chlorine evolution ***,we grow TiO_(2)and RuO_(2)on MXene@carbon cloth(CC)through the favorable affinity and induced deposition effect between the surface functional groups of MXene and the metal.A self-supported electrode(RuTiO_(2)/MXene@CC)with strong binding at the electrocatalyst-support interface and weak adhesion at electrocatalyst-bubble interface is *** RuTiO_(2)/MXene@CC can reduce the electron density of RuO_(2)by regulating the electron redistribution at the heterogeneous interface,thus enhancing the adsorption of Cl−.RuTiO_(2)/MXene@CC could achieve a high current density of 1000 mA·cm^(−2)at a small overpotential of 220 mV,superior to commercial dimensionally stable anodes(DSA).This study provides a new strategy for constructing efficient CER catalysts at high current density.

关键词： chlorine evolution reaction high current density MXene TiO_(2) RuO_(2)

来源：评论

学校读者我要写书评

暂无评论

A colorimetric nanobiosensor with enhanced sensitivity for detection of lead(Ⅱ)in real-water samples via an adeninecytosine mismatched DNAzyme

引用

Frontiers of environmental science & engineering 2024年第12期18卷 167-177页

作者： Jinchuan Liu Hang Yang Huanxing Li Jiancheng Wang Xiaohong Zhou College of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China State Key Joint Laboratory of ESPC School of EnvironmentTsinghua UniversityBeijing 100084China

Facile and ultrasensitive detection of Pb^(2+)in water for remote or resource-limited environments remains ***-based colorimetric nanobiosensors have been extensively studied to regulate the assembly of functionalized gold nanoparticles(AuNPs).However,these nanobiosensors have been criticized for their low sensitivity owing to the difficulty of dissociating DNAzyme embedded in AuNP *** address this issue,we rationally designed a DNAzyme by introducing an adenine-cytosine(A-C)mismatch to strengthen the disassembly of DNAzyme-linked *** proof of concept,a“turn on”colorimetric nanobiosensor integrated with mismatched DNAzyme and functionalized AuNPs was first developed for Pb^(2+)*** the optimal detection conditions,the obtained typical calibration curve shows a detection limit of 8.6 nmol/L,with an approximately 11-fold sensitivity improvement in Pb^(2+)detection compared with unmismatched DNAzyme,and a linear response range from 10 to 300 nmol/*** nanobiosensor demonstrated robust selectivity and satisfactory recovery rates between 86.5%and 106.4%for Pb^(2+)in spiked environmental water ***,the detection process is user-friendly and can be completed within 30 min,requiring only a simple water sample addition *** the extensive applications of DNAzyme in conjunction with nanoparticles,this study provides a valuable reference for designing other DNAzyme-powered nanoparticle assemblies in biosensing systems.

关键词： Trace lead(Ⅱ)ions Modified mismatched DNAzyme Gold nanoparticles Colorimetric nanobiosensor environmental water samples

来源：评论

学校读者我要写书评

暂无评论

Hybrid HMX multi-level assembled under the constraint of 2D materials with efficiently reduced sensitivity and optimized thermal stability

引用

Defence technology（防务技术） 2024年第9期39卷 123-132页

作者： Xiaomin Song Longjin Huang Rufang Peng Qi Huang Jinjiang Xu Jie Sun Institute of Chemical Materials China Academy of Engineering PhysicsMianyang621900China State Key Laboratory of Environment-friendly Energy Materials School of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyang621010China

The interfacial interaction between HMX molecules and coating materials is the key to the safety performance of explosives and has received extensive ***,screening suitable coating agents to enhance the interfacial effect to obtain high-energy and low-sensitivity explosives has long been a major *** this work,HMX-PEI/rGO/g-C_(3)N_(4)(HPrGC)composites were innovatively prepared by a multi-level coating strategy of two-dimensional graphite rGO and g-C_(3)N_(4).The g-C_(3)N_(4) used for desensitization has a richπ-conjugated system and shows outstanding ability in reducing friction *** hierarchical structure of HPrGC formed by electrostatic self-assembly andπ-πstacking can effectively dissipate energy accumulation under heat and mechanical stimulation through structural evolution,thus exhibiting a prominent synergistic desensitization effect on *** results show that rGO/gC_(3)N_(4) coating has no effect on the crystal structure and chemical structure of *** importantly,the perfect combination of g-C_(3)N_(4) and rGO endows HPrGC with enhanced thermal stability and ideal mechanical sensitivity(IS:21 J,FS:216 N).Obviously,the new fabrication of HPrGC enriches the variety of desensitizer materials and helps to deepen the understanding of the interaction between explosives and coatings.

关键词： HMX-PEI/rGO/g-C_(3)N_(4) Electrostatic self-assembly π-πstacking Synergistic desensitization

来源：评论

学校读者我要写书评

暂无评论

Recent progress in carbene-catalyzed fluoroalkylation

引用

science China Chemistry 2024年第8期67卷 2448-2460页

作者： Bei Zhang Xuan Zhang Jian Wang Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China School of Pharmaceutical Sciences Tsinghua UniversityBeijing 100084China

The fluoroalkyl fragment plays a vital role in various fields such as pharmaceuticals and materials science, and has a significant impact on human life not only on the present but also in the future. The insertion of fluoroalkyl groups into the chemical skeletons can cause considerable alternations in the chemical, physical and biological properties of molecules, which has attracted numerous scientists from different fields. This review focuses on N-heterocyclic carbene(NHC)-catalyzed fluoroalkylation reactions, providing a detailed analysis and summary of the achievements in the past two decades. Many successful examples clearly indicate that NHCs can catalyze the tranformation of fluoroalkylation reagents with various electronic characteristics, whether electrophilic, nucleophilic, or radical precursors. Herein, the fluoroalkylation reactions are classified based on different catalytic modes of NHCs: Lewis base catalysis, Umploung catalysis, radical catalysis and others. Meanwhile, by refining and systematically studying the contribution of NHC catalysis in fluoroalkylation reactions, this review is expected to provide valuable insights and enlightenment for related fields.

关键词： N-heterocyclic carbene fluoroalkylation radical catalysis

来源：评论

学校读者我要写书评

暂无评论

Advancements in thermoelectric materials: A comprehensive review

引用

Materials science for Energy Technologies 2024年 7卷 349-373页

作者： Irfan, Syed Yan, Zhiyuan Khan, Sadaf Bashir State Key Laboratory of Environment-friendly Energy Materials Southwest University of Science and Technology Mianyang621010 China School of Manufacturing Science and Engineering Key Laboratory of Testing Technology for Manufacturing Process Ministry of Education Southwest University of Science and Technology Mianyang621010 China

Due to their broad range of uses in thermo-electric devices, aerospace, and other industries, thermoelectric materials have garnered much attention. To expand the scope of their applications, thermoelectric materials’ thermoelectric characteristics must be effectively improved. Improved thermoelectrical properties with advancement is one of the critical strategies. Even though it is challenging to do small-scale measurements, it is crucial to precisely gauge the thermoelectric characteristics of varying materials (organic/inorganic/MXenes). Two-dimensional materials have drawn much interest for technological applications because of their unique properties. MXenes are a class of two-dimensional (2D) transition metal carbides, nitrides, and carbonitrides that have garnered significant attention for their promising properties by showing high electrical conductivity, controllable thermal conductivity, and high Seebeck coefficient value making suitable candidates for thermoelectric energy conversion. Thermal and electrical parameters are currently measured using a variety of techniques. However, the advanced thermoelectric properties with advanced thermoelectric materials, such as thermopower, thermal conductance, and electrical conductivity, are compiled in this review. Also outlined are measurement techniques for thermoelectric properties of selected advanced and 2D materials. Lastly, the challenges of integrated measurement methods are suggested, and a few integrated measurement solutions that work well with many inorganic/organic composites and two-dimensional materials MXenes are most proposed. © 2024

关键词： Thermoelectric equipment

来源：评论

学校读者我要写书评

暂无评论

Loading CuO on the surface of MgO with low-coordination basic O^(2-)sites for effective enhanced CO_(2) capture and photothermal synergistic catalytic reduction of CO_(2) to ethanol

引用

Chinese Journal of Chemical engineering 2023年第9期61卷 58-67页

作者： Ting Li Hongxia Guo Xiao Wang Huan Wang Li Liu Wenquan Cui Xiaoran Sun Yinghua Liang College of Chemical Engineering Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic MaterialsNorth China University of Science and TechnologyTangshan 063210China

The higher capacity of CO_(2)adsorption on the surface of magnesium oxide(MgO)with low-coordination O^(2-)sites would effectively enhance the catalytic reduction of CO_(2).Herein,a series of copper oxide(CuO)and MgO composites with different mass ratios have been prepared by hydrothermal method and used for photothermal synergistic catalytic reduction of CO_(2)to *** catalyst with CuO mass ratio of 1.6% shows the best yield(15.17μmol·g^(-1)·h^(-1))under 3 h Xenon lamp *** improved performance is attributable to the loose nano-sheet structure,uniform dispersion of active sites,the increased specific surface area,medium-strength basicity,the high separation efficiency of electrons and holes,and the formation of Mg-O-Cu *** synthesized CuO and MgO composites with loose nano-sheet structure facilitate the diffusion of reactants CO_(2),so an excellent CO_(2)adsorption performance can be ***,the introduction of CuO in the form of bivalence provides higher specific surface area and porosity,thus obtaining more active *** importantly,the Mg-O-Cu species make the donation of electrons from MgO to CO_(2)easier,resulting in the breaking of the old Mg-O bond and the formation of C-O bond,thus promoting the adsorption and conversion of CO_(2)to ethanol.

关键词： CO_(2)reduction Photothermal catalysis Ethanol MgO CuO

来源：评论

学校读者我要写书评

暂无评论

High temperature oxidation behavior of TiNbMoAlSi refractory high entropy alloy developed by electron beam additive manufacturing

引用

材料科学技术（英文版） 2025年第12期215卷 131-146页

作者： Zhe Li Liang Wang Yong Yang Chen Liu Baoxian Su Qingda Zhang Zhiwen Li Jiaqi Huang Binbin Wang Liangshun Luo Ruirun Chen Yanqing Su National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China Zhengzhou Research Institute Harbin Institute of TechnologyZhengzhou450041China Laboratory for Space Environment and Physical Sciences Harbin Institute of TechnologyHarbin150001China

Up-and-coming high-temperature materials,refractory high entropy alloys,are suffering from lower oxi-dation resistance,restricting their applications in the aerospace *** this study,two novel treatments of Al-deposited and remelted were developed to refine the microstructure and enhance the oxidation resistance of refractory high entropy alloy using electron beam freeform fabrication(EBF3).Finer and short-range ordering structures were observed in the remelted sample,whereas the Al-deposited sample showcased the formation of silicide and intermetallic ***-temperature cyclic and isothermal ox-idation tests at 1000 ℃ were carried *** total weight gain after 60 h of cyclic oxidation decreased by 17.49％and 30.46％for the remelted and deposited samples,respectively,compared to the as-cast *** kinetics reveal an evident lower mass gain and oxidation rate in the treated samples.A multi-layer oxide consisting of TiO2+Al2O3+SiO2+AlNbO4 was studied for its excellent oxidation *** oxidation behavior of rutile,corundum and other oxides was analyzed using first principles calculations and chemical defect ***,this research,which introduces novel treatments,offers promising insights for enhancing the inherent oxidation resistance of refractory high entropy alloys.

关键词： Refractory high entropy alloy Oxidation Electron beam freeform fabrication Multilayer oxide First principles calculations

来源：评论

学校读者我要写书评

暂无评论

Review of bumper materials for spacecraft shield against orbital debris hypervelocity impact

引用

Defence technology(防务技术) 2025年第3期45卷 137-177页

作者： Siyuan Ren Pinliang Zhang Qiang Wu Qingming Zhang Zizheng Gong Guangming Song Renrong Long Liangfei Gong Mingze Wu Beijing Institute of Spacecraft Environment Engineering China Academy of Space TechnologyBeijing100094China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China School of Civil Engineering Chongqing Jiaotong UniversityChongqing400074China

It is widely known that the hypervelocity impact of orbital debris can cause serious damage to spacecraft,and enhancing the impact resistance is the great concern of spacecraft shield *** paper provides a comprehensive overview of advances in the development of bumper materials for spacecraft shield *** particular,the protective mechanism and process of the bumper using different materials against hypervelocity impact are reviewed and *** advantages and disadvantages of each material used in shield were discussed,and the performance under hypervelocity impact was given according to the specific *** review provides the useful reference and basis for researchers and engineers to create bumper materials for spacecraft shield applications,and the contemporary challenges and future directions for bumper materials for spacecraft shield were presented.

关键词： Orbital debris Spacecraft shield Hypervelocity impact Bumper materials Protective mechanism

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：