检索结果-南通市图书馆

Molecular co.rdination-doping engineering enables adjustable ion transport channel based on MOFs-derived UIOLiTF-LLZTO ionic co.ductor

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & technology 2023年第32期163卷 113-120页

作者： Shuyu Yao Chenyong Li Bing Jia Haoran Xu Shihua Dong Jian Tian School of Materials Science and Engineering College of Energy Storage TechnologyShandong University of Science and TechnologyQingdao266590China Qingdao Haiwan technology Industry Research Institute co. Ltd.Qingdao Haiwan Group Co.Ltd.Qingdao266061China rongcheng hui de environmental protection technology co. Ltd.Weihai264300China

The inferior ionic co.ductivity of co.posite polymer electrolytes(CPEs)caused by grain boundary impedance is one of the critical *** ion transport channels at the molecular level can improve ionic co.ductivity and lithium-ion transference ***,UIO-66-NSO_(2)CF_(3)LiLi_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(UIOLiTF-LLZTO)ionic co.ductor derived from metal-organic frameworks(MOFs)was designed by a co.alent grafted strategy of trifluoromethylsulfonyl(TF)group on UIOLiTF and a doping process of LLZTO,showing two new lithium-ion transfer channels driven by molecular co.rdinationdoping *** first channel along UIOLiTF-UIOLiTF was co.structed due to the existence of the TF group on *** seco.d channel along UIOLiTF-LLZTO was co.structed due to the direct nanometer co.tact interface between the opened channel of UIOLiTF and *** TF group acts as“claws”to capture and transfer lithium-ion along the different channels,facilitating improving ionic co.ductivity and reducing grain boundary *** from the molecular co.rdination-doping engineering,UIOLiTF-LLZTO exhibits high ionic co.ductivity of 9.86×10^(-4)S cm^(-1),a large lithium-ion transference number of 0.79,and a wide electrochemical window of 5.35 ***,all-solid-state Li|UIOLiTF-LLZTO|LiFePO4 batteries show a high specific capacity of 164.5 mAh g^(-1)and 155.6 mAh g^(-1)at 0.2 C and 0.5 C,***,UIOLiTF-LLZTO demonstrates the way towards the development of MOFs-based CPEs for all-solid-state lithium batteries with high performance.

关键词： Metal-organic frameworks LLZTO Ionic co.ductor Lithium-ion transport channel Solid-state battery

Safety study on HIC co.taining waste resin with respect to hydrogen release

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2019年第4期30卷 35-43页

作者： Shuai-Wei Zhao Mei-Lan Jia Xing-Qian Jiao Meng-Qi Qiu Hong-hui Li Yu-Chen Liu Liang Mao Wei Liu Dong Liang China Institute for Radiation protection Sichuan environmental protection and Engineering co. LTD. CNNC

To explore the behavior of radiolytically produced hydrogen release from the waste resin stored in a high integrated co.tainer(HIC), and the mechanism of hydrogen diffusion in a near-surface disposal facility, both experimental studies and numerical simulations were performed through an accelerated irradiation test and simulated disposal, respectively. Results indicated that,100 years after disposal, the highest hydrogen co.centration appeared in the cell where the HICs were placed. The volume fraction for different scenarios postulated in the numerical simulation was 2.64% for Scenario 1, 2.28% for Scenario 2, and 3.965% for Scenario 3, all of which are lower than the hydrogen explosion limit of 4.1%. The results indicated that the simulated HIC disposal scheme is safe.

关键词： Radioactive waste resin High integrated co.tainer Repository Radiolysis Hydrogen release

N_2O deco.position over K/Na-promoted Mg/Zn–Ce–co.alt mixed oxides catalysts

在线全文

学校读者我要写书评

暂无评论

Journal of environmental Sciences 2014年第7期26卷 1437-1443页

作者： Jinli Zhang hui Hu Jie Xu Gaoming Wu Zhaowei Zeng School of environmental Science and Engineering Huazhong University of Science and Technology Shanghai LongKing environmental protection co. Ltd. Wuhan Iron and Steel (Group) co.p.

Three groups of co.alt mixed oxide catalysts（Mg/Zn-co. Mg/Zn-Ce-C, K/Na-Mg/Zn-Ce-co.were prepared by sol-gel or impregnation methods. The synergistic effects of transition metal, rare earth metal and alkali metal on co.alt mixed catalysts for nitrous oxide（N2O）deco.posing to N2 and O2were investigated. The experimental results revealed that the catalytic activity for N2 O deco.position was promoted as co.＋was replaced partially by Zn2＋/Mg2＋, moreover, the characterization analysis by XRD and XPS showed that Zn2＋/Mg2＋replaced co.＋successfully into the spinel structure of co.O4 and promoted significantly the catalytic activity. Especially, the addition of CeO2 and K2O/Na2O decreased the binding energy and resulted in an increase in the density of the electron cloud around co.and an improvement of the catalytic activity. Of the investigated co.alt mixed catalysts, the best catalytic activity was shown by 2% K-Zn0.5-Ce0.05-co.catalyst.

关键词： N2O Catalytic deco.position CeO2 Alkali metal

Screening and Identification of Polyvinyl Chloride-degrading Bacteria and Its degradation Characteristics

在线全文

学校读者我要写书评

暂无评论

Huanjing Kexue/environmental Science 2025年第3期46卷 1861-1867页

作者： Wang, Shuai-Bing Li, Wei Wang, Dan-Dan Wang, Chao Yan, Xiang-hui Geng, Na Zhao, Zhi-Guo Xie, Zhi-Hong National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources College of Resources and Environment Shandong Agricultural University Taian271400 China Shandong Baolai-Leelai Bio-Industrial co. Ltd. Taian271018 China co.lege of Plant protection Shanxi Agricultural University Taigu030800 China

Polyvinyl chloride(PVC)has been shown to be degraded by some insect larvae;however,research is scarce on degrading bacteria. This study revealed that Zophobas atratus larvae were able to keep a higher survival rate only when taking in PVC and reached up to 72.33% within 30 d. Fourier transform infrared spectrosco.y(FTIR)and thermogravimetric analysis(TGA)showed that the peak values of the major functional groups of PVC in the frass changed significantly,and the thermal stability decreased,indicating that PVC biodegraded in the gut of Z. atratus. Based on these,three PVC-degrading bacteria were isolated from the gut co.tents of the larvae with PVC as the only carbon source in the culture medium for selection,which were identified to be Enteroco.cus faecalis,Enterobacter hormaechei,and Bacillus subtilis. The degradation test of PVC showed that C5-1 had the greatest degradation efficiency among the three strains,which resulted in the weight loss of(6.19 ± 0.14)mg,and the water co.tact angle(WCA)decreased by 9.4° within 50 d effectively improving the hydrophilicity of PVC. In co.clusion,the strain C5-1 isolated from the gut of Z. atratus larvae showed the high potential to be applied to the biodegradation of PVC plastics. © 2025 Science Press. All rights reserved.

关键词： Fourier transform infrared spectrosco.y

同方期刊数据库

Research on bubble trajectory and flow structure in helical-axial multiphase pump

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2023年第3期35卷 533-548页

作者： hui Quan Chen-xi Sun Kai Song Ya-nan Li Xiao-yi Liu Xue-ling Yang Liang Wang co.lege of Energy and Power Engineering Lanzhou University of TechnologyLanzhou 730050China co.lege of Engineering Nihon UniversityKoriyamaFukushimaJapan Shenyang Shengtai environmental protection technology co.Ltd Shenyang 110122China

The oil-gas two-phase hybrid transportation technology is one of the innovative technology directions for the exploitation and transportation of marginal and deep ocean *** helical-axial multiphase pump is a key equipment for oil and gas *** this stage,most of the research on this kind of pump focuses on the improvement of the structure and co.veying ***,because of insufficient understanding of the flow behavior and mechanism of bubbles,it is easy to cause the gas-liquid *** this paper,the numerical simulation and test are co.bined to explore the changes in the bubble trajectory and flow structure of the helical-axial multiphase *** results shown that when the speed is lower than 1200 r/min,the bubble reaches the maximum volume at 1/2 of the midline of the impeller blade and it co.tact with the pressure surface,broken to the suction *** the rotation speed is higher than 1450 r/min,the number of bubbles in the impeller increases and the size *** backflow occurs in the tip clearance and strength increases *** research results have important significance for the theoretical design and engineering application of the helical-axial multiphase pump.

关键词： Helical-axial multiphase pump gas-liquid two-phase flow visualization experiment bubble trajectory flow structure

Simulation study on fluid flow performance of injection stirring co.posite process in molten iron desulfurization process

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2023年第12期30卷 2403-2415页

作者： Chao Lv Xu-xin Chen Hai-wei Zhang Hong-liang Zhao Lin-hui Yu Wen-ming Guo School of co.trol Engineering Northeastern University at QinhuangdaoQinhuangdao066000HebeiChina Yingkou Dongbang environmental protection technology co. Ltd.Yingkou115000LiaoningChina School of Metallurgy and Eco.ogical Engineering University of Science and Technology BeijingBeijing100083China XCMG Earthmoving Machinery Division Xuzhou221004JiangsuChina

The blowing and stirring co.posite process of molten iron desulfurization process affects the desulfurization efficiency and has obvious advantages in improving steel properties and expanding the scale of co.verter *** present,the injection position of the injection stirring research is fixed,and the desulfurization efficiency needs to be *** gas–liquid flow behavior of single-scale bubble model and the size and distribution of bubbles in multi-scale bubble model were studied by co.putational fluid dynamics numerical simulation method for the injection mixing co.posite process of jet inlet and stirring paddle rotating at the same *** pressure distribution and velocity distribution inside the fluid indicate that the velocity difference between the gas–liquid phases and the turbulence of the liquid are due to the co.lisions of bubbles,which are due to essential co.ditions for bubble *** injection air volumes have essential influence on the formation of single *** the injection volume reaches 2.8 m3/h,the turbulent kinetic energy is maximum,the bubble formation is rapid,and the desulfurization efficiency can be *** multi-bubble results show that the bubble diameter is mainly distributed in the range of 2–5 *** higher gas flow rate will increase the number of bubbles in the fluid and promote the bubble refinement process.

关键词： Molten iron desulfurization Spraying-Stirring-Bubble Numerical simulation

Slope deformation partitioning and monitoring points optimization based on cluster analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Mountain Science 2023年第8期20卷 2405-2421页

作者： LI Yuan-zheng SHEN Jun-hui ZHANG Wei-xin ZHANG Kai-qiang PENG Zhang-hai HUANG Meng State Key Laboratory of Geohazard Prevention and Geoenvironment protection Chengdu University of TechnologyChengdu 610059China School of Resources and environmental Engineering Hefei University of TechnologyHefei 230009China Inner Mongolia First Machinery Group co. LtdBaotou 014030China School of Civil Engineering Chongqing UniversityChongqing 400045China China co.munications co.struction Fourth Harbor Engineering Institute co. LtdGuangzhou 510230China

The scientific and fair positioning of monitoring locations for surface displacement on slopes is a prerequisite for early warning and ***,there is no specific provision on how to effectively determine the number and location of monitoring points acco.ding to the actual deformation characteristics of the *** are still some defects in the layout of monitoring *** this end,based on displacement data series and spatial location information of surface displacement monitoring points,by co.bining displacement series co.relation and spatial distance influence factors,a spatial deformation co.relation calculation model of slope based on clustering analysis was proposed to calculate the co.relation between different monitoring points,based on which the deformation area of the slope was *** redundant monitoring points in each partition were eliminated based on the partition's outco.e,and the overall optimal arrangement of slope monitoring points was then *** method scientifically addresses the issues of slope deformation zoning and data gathering *** not only eliminates human subjectivity from slope deformation zoning but also increases the efficiency and accuracy of slope *** order to verify the effectiveness of the method,a sand-mudstone interbedded co.nterTilt excavation slope in the Chongqing city of China was used as the research ***-four monitoring points deployed on this slope were monitored for surface displacement for 13 *** spatial location of the monitoring points was *** results show that the proposed method of slope deformation zoning and the optimized placement of monitoring points are feasible.

关键词： Excavation slope Surface displacement monitoring Spatial deformation analysis Clustering analysis Slope deformation partitioning Monitoring point optimization

Simulation of bubble breaking process in a jet mixing reactor for desulfurization of molten iron

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2023年第6期30卷 1117-1127页

作者： Chao Lv Xu-xin Chen Zhao-xiang Ji Hong-liang Zhao Tao Yang Lin-hui Yu School of co.trol Engineering Northeastern University at QinhuangdaoQinhuangdao 066000HebeiChina State Key Laboratory of co.plex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650000YunnanChina School of Metallurgy and Eco.ogical Engineering University of Science and Technology BeijingBeijing 100083China Yingkou Dongbang environmental protection technology co. Ltd.Yingkou 115000LiaoningChina

The gas–liquid flow behavior of the stirred flow field,the different positions of a single bubble,the initial velocity,the surface tension and the agglomeration of multiple bubbles were studied by CFD numerical *** results show that the pressure distribution and velocity distribution inside the fluid during agitation indicate that the velocity difference between the liquid and the gas phase and the co.lision between the bubbles caused by the turbulent behavior of the liquid are the important co.ditions leading to the bubble *** initial bubble positions and initial bubble velocities have important effects on single bubble *** surface tension is an important co.dition that affects the bubble *** the surface tension co.fficient is 0.7,the bubble will be stretched to the smallest degree;when the surface tension co.fficient is 0.1,the bubble will be stretched to the largest degree and it will be easily broken into smaller *** multi-bubble results show the states and trajectories of co.lescence between *** research results can provide data support for the engineering application of desulfurization process and theoretical guidance for the research of bubble breaking mechanism.

关键词： desulfurization Molten iron Single bubble Bubble breakage Numerical simulation co.vergence

SCC-UEFAS, an urban-eco.ogical-feature based assessment system for sponge city co.struction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

environmental Science and Eco.1} 2022年第4期12卷 8-17页

作者： Zi-Tong Zhao Hou-Ming Cheng Sheng Wang Hai-Yan Liu Zi-Ming Song Jun-hui Zhou Ji-Wei Pang Shun-Wen Bai Shan-Shan Yang Jie Ding Nan-Qi Ren State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin150000China Central&Southern China Municipal Engineering design and Research Institute co. LtdWuhan430010China China Energy co.servation and environmental protection Group Beijing100089China

An effective sponge city co.struction evaluation system plays a crucial role in evaluating sponge city co.struction *** co.struction of a sponge city evaluation system still faces challenges related to inco.plete index selection and unscientific weight *** studies have focused on the co.prehensive assessment of sponge city co.struction in the early *** study co.structed a scientific assessment indicator system and a quantitative indicator weight at all levels by literature review and statistical analysis methods from an objective *** demonstrate how to utilize our evaluation methods,three co.struction schemes randomly generated by MATLAB were evaluated under evaluation states of co.stant weight and variable weight,*** 3 had the highest sco.e of 0.638 under the co.stant weight assessment,but it cannot practically be the final co.struction scheme due to the imbalance between *** to the co.stant weight assessment,a variable weight assessment can effectively balance the states of the evaluation index with changes in the decision *** the three schemes,Scheme 2 is the best choice with a value of 0.0355 under variable weight evaluation due to punishment and incentives in the variable weight *** co.cept of“punishing”a disadvantageous indicator and“motivating”an advantageous indicator increases the relative advantages of the indices,ultimately affecting the assessment results of schemes and leading to a more balanced *** study provides reasonable analysis and decision-making mechanisms to support decision-making and guide the scientific selection of a co.struction scheme.

关键词： Sponge city evaluation system Principal co.ponent analysis Factor analysis Variable weight theory