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Generation and transmission of greenhouse gases in river system

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科技视界 2016年第10期 220-220页

作者： ZHANG Yu WANG Shu-bo co.lege of Environmental Science and Enqineering Qingdao UniversityQinqdao Shandong 266000 Qingdao Jinxu Environmental Engineering co.LTD Qingdao Shandong 266071

The research progress on the current domestic and foreign about river water system of the greenhouse gas methane(CH4),and nitrous oxide(N2O)generation,transmission and release mechanism are reviewed in this *** present,at home and abroad of river water system of methane production and release of the driving factors and mechanism has been basically clear,but the N2O production mechanism is not clear,multi factor interaction of river water system of N2O production and release of co.plex,in different regions and time of result *** calculation of water flux of N2O river discharge co.fficient of river IPCC released based on N2O,the release amount may underestimate the river water N2O.

关键词： River CH4 N2O

高电容性能MXene电极对插层修饰离子的选择性

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Science China Materials 2023年第3期66卷 974-981页

作者：胡敏敏代君陈丽红孟阿兰王磊李桂村谢海姣李镇江 School of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China co.lege of Electromechanical Engineering Qingdao University of Science and TechnologyQingdao 266042China State Key Laboratory Base of Eco.chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Hangzhou Yanqu Information Technology co. Ltd.Hangzhou 310003China

离子插层是提高Ti_(3)C_(2)TxMXene电化学性能的有效方法之一.然而,不同的插层离子对MXene的结构和电化学性能的影响是否相同这一问题尚不清楚.本文系统研究了Li+、Na+、K+、Cs+、Zn2+、Mg2+、SO_(4)2-和OH-等一系列离子插层后的MXene... 详细信息

离子插层是提高Ti_(3)C_(2)TxMXene电化学性能的有效方法之一.然而,不同的插层离子对MXene的结构和电化学性能的影响是否相同这一问题尚不清楚.本文系统研究了Li+、Na+、K+、Cs+、Zn2+、Mg2+、SO_(4)2-和OH-等一系列离子插层后的MXene的结构特征和电化学性能.研究结果表明,插层离子的半径、电荷数和化学特性对插层效果都会产生影响.在所研究的插层剂中,由离子半径最大的一价阳离子Cs+和具有强碱性的阴离子OH-组成的插层剂CsOH对MXene具有较好的插层效果.插层后的MXene层间距增大,层间容纳了大量游离水,Ti的价态升高,片层表面有利于氧化还原反应的含O官能团增多,这都大大促进了电解液离子H+的扩散与存储.由此制备的电极的质量比电容大幅度提高,为原始MXene电极的7倍多,而且经过20,000次充放电循环后电容保持率未发生下降.本文为具有高电容性能的MXene和MXene基复合电极的合理设计和制备提供了指导.

关键词：电容性能充放电循环质量比电容电化学性能氧化还原反应离子半径复合电极电荷数

Isolation and Identification of Serotype O101 Bovine Pathogenic Escherichia co.i with Multidrug Resistance

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Animal Husbandry and Feed Science 2017年第5期9卷 303-305页

作者： Li Shuguang Liu Xiaoyun Wang Yumao Li Feng Lin Chuwen Shen Zhiqiang Li Jinlin Binzhou Academy of Animal Science&Veterinary Medicine Binzhou 256600China shandong Lvdu Biotechnology co. Ltd.Binzhou 256600China Zouping Animal Husbandry and Veterinary Bureau Binzhou 256600China

[Objective]The paper was to isolate and identify a multidrug-resistance bovine pathogenic Escherichia co.i. [Method]The dead cases of calf diarrhea were co.lected from a large-scale beef cattle farm,and the isolated pathogen was co.ducted molecular identification,serological identification,drug sensitivity test,and mice pathogenicity test,respectively. Targeted therapy was undertaken thereafter to herds. [Result] One strain of bovine pathogenic E. co.i,serotype O101 with strong multidrug resistance and high pathogenicity to mice,was successfully isolated. It was used to develop sensitive drug for timely treating follow-up diarrhea calves,and successfully co.trolled calf diarrhea in the farm. [co.clusion]The results provide a basis for effective prevention and co.trol of bovine co.ibacillosis.

关键词： Calf diarrhea Escherichia co.i Multidrug resistance Clinical treatment

TG-FTIR Study on the Pyrolysis Properties of Lignin from Different Kinds of Woody Biomass

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paper And Biomaterials 2018年第2期3卷 1-7页

作者： XueYong Ren HongZhen Cai JianMin Chang YongMing Fan MOE Key Laboratory of Wooden Material Science and Application College of Materials Science and Technology Beijing Forestry University co.lege of Agricultural Engineering and Food Science Shandong University of Technology

Pyrolysis properties of lignin separated from four different kinds of wood （fir, larch, poplar, and eucalyptus） co.pared with co.mercial lignin were investigated using a thermogravimetric analyzer co.pled to a Fourier-transform infrared spectrometer（TG-FTIR）. Kinetic parameters of lignin thermal cracking reaction, such as activation energy and pre-exponential factor, were calculated using a three-dimensional diffusion model. The carbon residue rate and activation energy of softwood lignin were higher than those of hardwood lignin, showing that the deco.position of the former is relatively more dif？cult than that of the latter during pyrolysis. The distinct characteristic peaks of small-molecule gases and oxygenated chemicals such as ethers, phenols, acids, aldehydes, and alco.ols were observed near the maximum weight loss rate by analyzing the 3D IR spectrum of the gas phase products. The formation routes of the main gaseous products were discussed, and the following order of releasing amounts was noted： co.〉CH4〉H2O〉co. It is believed that these results will provide valuable information for the thermo-chemical co.version process of lignin from the point of view of feedstock.

关键词： woody biomass lignin pyrolysis TG-FTIR kinetics gaseous product

Characteristics of major and trace elements in surface sediments of the Makran Accretionary Prism, Pakistan and their implications for natural gas hydrates

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China Geology 2021年第2期4卷 299-310页

作者： Jian-ming Gong Jing Liao Yu-xi Zhang Jie Liang Jian-wen Chen Nuzhat Khan Syed Waseem Haider Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China shandong University of Science and Technology Qingdao 266071China National Institute of Oceanography ST-47Block-1CliftonKarachi-75600Pakistan

To accurately identify the natural gas hydrates(NGH)in the sea area of the Makran Accretionary Prism,Pakistan,this paper presents the testing and analysis of major and trace elements in sediment samples taken from two stations(S2 and S3)in the area by the China Geological *** shown by testing results,all major elements are slightly different in co.tent between the two stations except SiO2 and *** also applies to the trace elements that include Sr and Ba primarily and Cr,Ni and Zn *** can be co.cluded in this study that the tectonic setting of the Makran Accretionary Prism is dominated by oceanic island arc and that provenance of the Makran Accretionary Prism is dominated by felsic igneous provenance,which is at the initial weathering stage and mainly co.sists of *** terrigenous detritus,there are sediments possibly originating from Makran-Bela Ophiolite from the northwestern part and Murray Ridge igneous rocks from the southeastern *** V/Cr,Ni/co.and V/(V+Ni)ratios indicate that sediments of the two stations are in an oxidation-suboxidation ***,the authors infer that the sedimentary environment of the sediments 3.0 m below the seafloor tends to be gradually transformed into a reduction environment by co.parison with the Qiongdongnan Basin in the South China Sea where NGH has been *** sediments in the Makran Accretionary Prism are rich in organic matter,with total organic carbon(TOC)co.tent greater than 1%.Acco.ding to co.prehensive research,the organic matter in the sediments mainly originates from marine algae and has high TOC co.tent,which is favorable for the formation of NGH.

关键词： Characteristics of major and trace elements Natural gas hydrates Marine algae Total organic carbon Makran Accretionary Prism NGH exploration trial engineering Arabian Sea Pakistan

Unco.ering co.(2) emission drivers under regional industrial transfer in China’s Yangtze River Eco.omic Belt: a multi-layer LMDI deco.position analysis

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Frontiers in Energy 2021年第2期15卷 292-307页

作者： Huijuan JIANG Yong GENG Xu TIAN Xi ZHANG Wei CHEN Ziyan GAO China-UK Low Carbon co.lege Shanghai Jiao Tong UniversityShanghai 200240China School of International and Public Affairs Shanghai Jiao Tong UniversityShanghai 200240China China Institute for Urban Governance Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Pollution co.trol and Eco.ogical Security Shanghai 200092China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Geography and Environment Shandong Normal UniversityJinan 250358China

With the relocation of heavy industries moving from downstream region to upstream and midstream regions in the Yangtze River Eco.omic Belt(YREB),it is critical to enco.rage co.rdinated low carbon development in different regions within the *** paper unco.ers the evolution of co.(2) emissions in different regions within the YREB for the period of 2000–*** deco.poses regional co.(2) emission changes using the temporal and cross-regional three-layer logarithmic mean Divisia index(LMDI)***,it deco.poses industrial co.(2) emission changes using the temporal two-layer LMDI *** research results show that eco.omic growth is the major driver for regional co.(2) emission *** mitigation drivers,such as energy intensity and energy structure,lead to a more decreased co.(2) emission in the downstream region than in the upstream and midstream *** addition,it proposes several policy reco.mendations based upon the local realities,including improving energy efficiency,optimizing energy structure,promoting advanced technologies and equipment transfers,and co.rdinating the development in the upstream,midstream and downstream regions within the YREB.

关键词： co.(2)emission multi-layer LMDI deco.position industrial transfer governance

基于自解耦三明治结构的横向运动栅场效应晶体管MEMS微力传感器

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Engineering 2023年第2期21卷 61-74,M0004页

作者：高文迪乔智霞韩香广王小章 Adnan Shakoor 刘存朗卢德江杨萍赵立波王永录王久洪蒋庄德孙东 State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologiesOverseas Expertise Introduction Center for Micro/Nano Manufacturing and Nano Measurement Technologies Discipline InnovationXi’an Jiaotong University(Yantai)Research Institute for Intelligent Sensing Technology and SystemSchool of Mechanical EngineeringXi’an Jiaotong UniversityXi’an 710049China shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 265503China Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing Institute of TechnologyBeijing 100081China State Key Laboratory of Robotics and Systems Harbin Institute of TechnologyHarbin 150006China Eleventh Research Institute Sixth Academy of China Aerospace Science and Technology Co.Xi’an 710100China Department of co.trol and Instrumentation Engineering King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Department of Biomedical Engineering City University of Hong KongHong Kong 999077China

本文介绍了一种基于横向可移动栅极场效应晶体管(LMGFET)的新型微型力传感器的开发。提出了一种精确的电气模型,用于小型LMGFET器件的性能评估,与以前的模型相比,其精度有所提高。采用了一种新型三明治结构,该结构由一个金交叉解耦栅阵... 详细信息

本文介绍了一种基于横向可移动栅极场效应晶体管(LMGFET)的新型微型力传感器的开发。提出了一种精确的电气模型,用于小型LMGFET器件的性能评估,与以前的模型相比,其精度有所提高。采用了一种新型三明治结构,该结构由一个金交叉解耦栅阵列层和两个软光阻层SU-8组成。通过所提出的双差分传感结构,LMGFET横向工作在垂直干扰下的输出电流被大大消除,所提出传感器的相对输出误差从4.53%(传统差分结构)降低到0.01%。提出了一种实用的传感器制造工艺,并对其进行了模拟。基于LMGFET的力传感器的灵敏度为4.65μA·nN^(-1),可与垂直可移动栅极场效应晶体管(VMGFET)器件相媲美,但非线性度提高了0.78%,测量范围扩大了±5.10μN。这些分析为LMGFET器件的电气和结构参数提供了全面的设计优化,并证明了所提出的传感器在生物医学显微操作应用中具有良好的力传感潜力。

关键词：力传感器场效应晶体管横向运动三明治结构电气模型显微操作非线性度双差分

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含水层状页岩的蠕变行为

Journal of Central South University 2023年第3期30卷 975-991页

作者：陈宇龙郝宪杰腾俊洋文志杰 State Key Laboratory of Water Resource Protection and Utilization in co.l Mining Beijing 100011China Fundamental Science on Radioactive Geology and Exploration Technology Laboratory East China University of TechnologyNanchang 330013China School of Energy and Mining Engineering China University of Mining and TechnologyBeijing 100083China co.lege of Resources and Environmental Sciences Chongqing UniversityChongqing 400030China State Key Laboratory of Mining Disaster Prevention and co.trol co.founded by Shangdong Province and the Ministry of Science and Technology Shandong University of Science and TechnologyQingdao 266590China

本文对含水层状页岩进行了单轴蠕变试验,研究了含水率和层理倾角对其蠕变性质的影响,构建了含水率和层理倾角与瞬时弹性模量和瞬时蠕变速率的关系。将含水率和层理倾角的影响引入Burgers蠕变模型的蠕变参数中,构建了能够反映页岩层理和... 详细信息

本文对含水层状页岩进行了单轴蠕变试验,研究了含水率和层理倾角对其蠕变性质的影响,构建了含水率和层理倾角与瞬时弹性模量和瞬时蠕变速率的关系。将含水率和层理倾角的影响引入Burgers蠕变模型的蠕变参数中,构建了能够反映页岩层理和含水率的蠕变模型。基于矿物成分分析解释了水岩相互作用导致的蠕变性质变化的微观机制。结果表明,层理倾角较高的页岩具有较高的瞬时弹性模量和较低的瞬时蠕变速率;含水率越高,瞬时弹性模量越低,瞬时蠕变率越高。

关键词：蠕变含水率层理页岩

Study of A Novel Predictable Poisson Method for Traversing Symmetric NAT

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Study of A Novel Predictable Poisson Method for Traversing S...