检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

开式消雾节水技术在工业循环冷却水中的应用

煤化工 2024年第3期52卷 24-27页

作者：王云刚蒲城陕煤技术研究工业化示范基地有限公司陕西渭南715500

循环冷却水系统节水是工业企业节水、节能的一个重要环节。常规开式循环冷却水塔因塔顶排放口易产生大量白雾,造成水资源的浪费;新型冷凝模块消雾节水冷却塔技术在消除白雾和节水方面成效显著,近年来受到广泛关注。分析了消雾节水冷却... 详细信息

循环冷却水系统节水是工业企业节水、节能的一个重要环节。常规开式循环冷却水塔因塔顶排放口易产生大量白雾,造成水资源的浪费;新型冷凝模块消雾节水冷却塔技术在消除白雾和节水方面成效显著,近年来受到广泛关注。分析了消雾节水冷却塔的消雾节水及工作原理,并与常规开式冷却塔进行了基本参数、运行费用、投资等方面的初步对比。初步估算,消雾节水冷却塔与常规冷却塔相比,蒸发水量和排污量可减少约20%,设备投资增加约80%,但整体运行费用较低,其投资成本在两年左右即可收回,在化工行业具有较好的应用前景。

关键词：循环冷却水系统常规开式冷却塔消雾节水冷却塔消雾节水原理投资运行费用

在线全文

学校读者我要写书评

暂无评论

声发射法检测输气管道泄漏的研究综述

安全与环境学报 2024年第3期24卷 1114-1127页

作者：王云刚宋代东李兵兵祁嘉宁河南理工大学安全科学与工程学院河南焦作454000 河南理工大学河南省瓦斯地质瓦斯治理省部共建国家重点实验室培育基地河南焦作454000 河南理工大学煤炭安全生产河南省协同创新中心河南焦作454000

声发射法检测管道泄漏是目前的热点方法,研究涉及泄漏信号的产生与传播、信号拾取与处理、基于信号的智能识别与定位等。通过介绍声发射检测定位原理及一些基本规律,详细分析小波分析、局域均值分解、经验模态分解、变分模态分解在处理... 详细信息

声发射法检测管道泄漏是目前的热点方法,研究涉及泄漏信号的产生与传播、信号拾取与处理、基于信号的智能识别与定位等。通过介绍声发射检测定位原理及一些基本规律,详细分析小波分析、局域均值分解、经验模态分解、变分模态分解在处理泄漏信号时的优劣,探讨人工智能在处理管道泄漏声发射信号中的应用,总结管道泄漏的模态研究、相关试验研究,来理清基于声发射的管道泄漏检测现状及展望未来发展。

关键词：公共安全管道泄漏声发射检测信号处理综述

Proteasomal and lysosomal degradation for specific and durable suppression of immunotherapeutic targets

在线全文

学校读者我要写书评

暂无评论

Cancer Biology & Medicine 2020年第3期17卷 583-598页

作者： yungang wang Shouyan Deng Jie Xu Institutes of Biomedical Sciences Zhongshan-Xuhui Hospitaland Shanghai Key Laboratory of Medical EpigeneticsFudan UniversityShanghai 200433China Department of Laboratory Medicine The First People's Hospital of Yancheng CityYancheng 224006China Renji Hospital School of MedicineShanghai Jiao Tong UniversityShanghai 200127China

Cancer immunotherapy harness the body's immune system to eliminate cancer,by using a broad panel of soluble and membrane proteins as therapeutic *** signaling mediated by ligand-receptor interaction may be blocked by monoclonal antibodies,but because of repopulation of the membranevia intracellular organelles,targets must be eliminated in whole *** protein degradation,as exemplified in proteolysis targeting chimera(PROTAC)studies,is a promising strategy for selective inhibition of target *** recently reported use of lysosomal targeting molecules to eliminate immune checkpoint proteins has paved the way for targeted degradation of membrane proteins as crucial anti-cancer *** studies on these molecules'modes of action,target-binding"warheads",lysosomal sorting signals,and linker design should facilitate their rational *** and derivatives may improve their cell-penetrating ability and thein vivo stability of these *** studies suggest the promise of alternative strategies for cancer immunotherapy,with the aim of achieving more potent and durable suppression of tumor ***,the successes and limitations of antibody inhibitorsin cancer immunotherapy,as well as research progress on PROTAC-and lysosomal-dependent degradation of target proteins,are reviewed.

关键词： Cancer immunotherapy membrane protein PROTAC targeted degradation

在线全文

学校读者我要写书评

暂无评论

三轴压缩下含瓦斯煤体电阻率响应的实验研究

河南理工大学学报（自然科学版） 2024年第2期43卷 8-14页

作者：王云刚宋代东张飞燕李东会河南理工大学安全工程实验示范中心河南焦作454000 河南理工大学河南省瓦斯地质与瓦斯治理省部共建国家重点实验室培育基地河南焦作454000 河南理工大学煤炭安全生产河南省协同创新中心河南焦作454000

目的受载含瓦斯煤体变形破裂过程中电阻率的变化规律是电阻率法预测预报煤与瓦斯突出发生的理论基础。因此,研究三轴压缩条件下含瓦斯煤体破裂过程中电阻率的变化规律十分必要。方法自主研发一套测试低频条件下受载含瓦斯煤体变形破坏... 详细信息

目的受载含瓦斯煤体变形破裂过程中电阻率的变化规律是电阻率法预测预报煤与瓦斯突出发生的理论基础。因此,研究三轴压缩条件下含瓦斯煤体破裂过程中电阻率的变化规律十分必要。方法自主研发一套测试低频条件下受载含瓦斯煤体变形破坏过程中电阻率的实验系统,测试三轴压缩条件下含瓦斯煤体电阻率的变化规律,对实验结果进行分析和解释。结果结果表明:(1)受载含瓦斯煤体的电阻率变化与所受应力存在显著的对应关系,型煤的电阻率变化规律与应力的对应关系要优于原煤的,对应力降低比较敏感;(2)受载型煤的电阻率变化规律为先上升后下降型和下降型,受载原煤的电阻率变化规律仅有下降型;(3)从原煤和型煤的物理力学以及受载过程中的变形破坏类型、受载含瓦斯煤体变形破坏过程中的煤体结构变化情况、煤的孔隙结构以及导电类型3方面分析解释受载含瓦斯煤体的电阻率变化情况;(4)对受载含瓦斯型煤电阻率变化曲线出现的2种类型进行科学合理的解释。结论研究成果可为电阻率法预测预报煤与瓦斯突出的发生提供技术支撑。

关键词：含瓦斯煤体电阻率三轴压缩煤与瓦斯突出

在线全文

学校读者我要写书评

暂无评论

生物质碳基催化剂催化重整焦油

硅酸盐学报 2024年第5期52卷 1643-1655页

作者：白彦渊王云刚修浩然邹立张兴邦刘涛李飞翔赵钦新西安交通大学热流科学与工程教育部重点实验室西安710049 湖北特种设备检验检测研究院武汉430077

生物质热利用过程中产生的焦油极易造成管路腐蚀堵塞,是当前亟待解决的关键问题。焦油的催化重整制氢是一种有效的生物质高值化利用技术。以常压气化炉运行过程中产生的焦油为研究对象,利用杏壳制备催化剂炭载体,并负载催化金属以制备... 详细信息

生物质热利用过程中产生的焦油极易造成管路腐蚀堵塞,是当前亟待解决的关键问题。焦油的催化重整制氢是一种有效的生物质高值化利用技术。以常压气化炉运行过程中产生的焦油为研究对象,利用杏壳制备催化剂炭载体,并负载催化金属以制备重整焦油用碳基催化剂;使用制备的碳基催化剂开展焦油水蒸气催化重整实验,并对比了不同负载金属的催化效果。结果表明:当采用单金属催化剂对焦油进行催化重整时,最佳工况为800℃、通入水蒸气与焦油质量比为3、焦油与催化剂质量比为2时,氢气产量高达91.52 g H_(2)(每1 kg焦油),焦油转化率为93.30%。Ni-Co/C复合催化剂表现出比单金属催化剂更强的活性。

关键词：生物质焦油活性炭催化剂氢

Tomography of the dynamic stress coefficient for stress wave prediction in sedimentary rock layer under the mining additional stress

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2021年第4期31卷 653-663页

作者： Wenlong Shen Guocang Shi yungang wang Jianbiao Bai Ruifeng Zhang Xiangyu wang Henan Key Laboratory for Green and Efficient Mining&Comprehensive Utilization of Mineral Resources School of Energy Science and EngineeringHenan Polytechnic UniversityJiaozuo 454000China Key Laboratory of Deep Coal Resource Mining Ministry of Education State Key Laboratory of Coal Resources and Safe MiningChina University of Mining and TechnologyXuzhou 221116China Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization Jiaozuo 454000China

In this study,the tomography of dynamic stress coefficient(TDSC)was established based on a mechanical model of stress wave propagation in bedding planes and a mathematical model of the stress wave attenuation in rock *** reliability of the TDSC was verified by a linear bedding plane model and field ***,the TDSC in the dynamic stress propagation of bedding planes increases with the following conditions:(1)the increase of the normal stiffness of the bedding plane,(2)the increase of the incident angle of the stress wave,(3)the decrease of the incident frequency of the stress wave,or(4)the growth of three ratios(the ratios of rock densities,elastic moduli,and the Poisson’s ratios)of rocks on either side of bedding *** additional stress weakens TDSC linearly and slowly during the stress wave propagation in bedding planes,and the weakening effect increases with the growth of the three ***,the TDSC decreases exponentially in the rock mass as propagation distance *** a field case,the TDSC decreases significantly as vertical and horizontal distances increase and its wave range increases as vertical distance increases in the sedimentary rock layers.

关键词： Tomography of the dynamic stress coefficient Stress wave attenuation Mining additional stress Sedimentary rock layer

Global adaptive output-feedback tracking with prescribed performance for uncertain nonlinear systems

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第5期67卷 150-164页

作者： Yuan wang yungang LIU School of Control Science and Engineering Shandong University

At present, one typical control strategy for guaranteeing transient and steady-state performance is funnel control and prescribed performance control. The strategy features completely discarding the system nonlinearities, even if they are completely known and available. Such an intrinsic feature requires the controller to produce a larger control effect to eliminate the negative impact caused by the high nonlinearities, leading to a conservative controller. In this paper, we fully take advantage of known information on nonlinearities in control design, instead of completely discarding it as done in funnel control. Particularly, we leverage adaptive techniques(i.e., high-gain dynamic compensation) to deal with unknown system nonlinearities. Meanwhile, we integrate the tools of output feedback, tracking control, and the performance *** such, an adaptive output-feedback scheme is developed for global tracking with spatiotemporal performance specifications: arbitrarily given tracking accuracy and accuracy-ensured time. A simulation example supports the developed approach.

关键词： uncertain nonlinear systems output feedback prescribed performance unknown control direction dynamic high gain global tracking

H_(2)O_(2)低温催化氧化法脱硫脱硝中试实验特性

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

化工进展 2024年第9期43卷 4941-4950页

作者：修浩然王云刚白彦渊刘涛张兴邦张益嘉西安交通大学热流科学与工程教育部重点实验室陕西西安710049

H_(2)O_(2)低温催化氧化法脱硫脱硝技术在燃煤电站深度调峰过程中可以应用于低温烟气。本文搭建中试热态实验系统,选取工业蜂窝状TiO_(2)催化剂,通过X射线衍射(XRD)、X射线荧光光谱(XRF)和扫描电子显微镜(SEM)等对其进行表征,进行脱硫... 详细信息

H_(2)O_(2)低温催化氧化法脱硫脱硝技术在燃煤电站深度调峰过程中可以应用于低温烟气。本文搭建中试热态实验系统,选取工业蜂窝状TiO_(2)催化剂,通过X射线衍射(XRD)、X射线荧光光谱(XRF)和扫描电子显微镜(SEM)等对其进行表征,进行脱硫脱硝一体化实验研究,探究各因素对H_(2)O_(2)低温催化氧化脱硝效率的影响规律。结果表明:微观下纳米TiO_(2)颗粒分布均匀、分散性好、纯度高。在单独脱硝实验中,温度对NO氧化和脱除效率影响较小;不采用催化剂时,NO的氧化脱除主要依靠H_(2)O_(2)自身的氧化性以及少量H_(2)O_(2)分解生成的‧HO_(2),效果较差。采用催化剂后,随着H_(2)O_(2)/NO摩尔比增加,NO氧化及脱除效率与无催化剂时相比大幅提升。在脱硫脱硝实验中,无催化剂条件下SO_(2)对NO的氧化和脱除效率有明显促进作用;有催化剂条件下,当H_(2)O_(2)/(NO+SO_(2))摩尔比为0.5时,NO与SO_(2)对‧OH的利用存在竞争效应,随着SO_(2)浓度的增加,NO氧化及脱除效率逐渐提升,SO_(2)脱除效率逐渐降低。采用蜂窝TiO_(2)催化剂,当H_(2)O_(2)/NO摩尔比为8时,NO氧化效率达90.4%,NO_(x)脱除效率达63.7%,SO_(2)脱除效率可达到100%。

关键词：氧化催化剂烟道气脱硝脱除效率

Using the GPS observations to reconstruct the ionosphere three-dimensionally with an ionospheric data assimilation and analysis system(IDAAS)

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2014年第11期57卷 2210-2219页

作者： YU Tao MAO Tian wang yungang ZENG ZhongCao wang JingSong FANG HanXian National Center for Space Weather China Meteorological Administration Institute of Geophysics and Geomatics China University of Geosciences College of Meteorological PLA University of Science & Technology

Using an international reference ionosphere(IRI)model as a background ionosphere and applying the Kalman filter to update the state with observations,we develop an ionosphere data assimilation analysis system(IDAAS)to reconstruct a three-dimensional(3D)ionosphere with the GPS slant TEC and ionosonde data over east-south *** preliminary results with the GPS data collected over east-south Asia on 30 June 2005 showed that inversed slant TEC has very good correlation with the observations both for the GPS sites being and not being involved in *** inversed NmF2 and vertical TEC both demonstrate great improvement of agreement with those observed from ionosondes and TOPEX satellite independently.

关键词： ionosphere data assimilation GPS TEC