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Constrained Predictive Control Based on State Space Model of Organic Rankine Cycle System for Waste Heat Recovery

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Constrained Predictive Control Based on State Space Model of...

第2.届中国控制与决策会议

作者： Jianhua Zhang * , Yeli Zhou, Song Gao, Guolian Hou School of Control and Computer Engineering, North china Electric Power University, beijing 102.06

Due to the advantages of recovering energy from low-grade heat sources, Organic Rankine Cycle （ORC） system is adopted as the primary technology for waste heat recovery. As the ORC system is a multivariable system with high complexity and nonlinear coupling, the conventional control strategy may not achieve satisfactory results. In this paper, the application of constrained model predictive control （MPC） for an ORC system is demonstrated. The simulation results are given to illustrate the efficiency and feasibility of the proposed control strategy.

关键词： Organic Rankine Cycle Multivariable control Constrained predictive control

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高温硬地层钻进中PDC钻头切削齿磨损研究

探矿工程（岩土钻掘工程） 2018年第10期45卷 185-189页

作者：高明洋张凯周琴周辉峰刘宝林中国地质大学(北京)工程技术学院北京100083 国土资源部深部地质钻探技术重点实验室北京100083

随着新时代对绿色环保资源的需求日渐旺盛,地热资源即将进入大规模开发阶段。为经济、高效获取地热资源,目前主要应用的是PDC钻头。但是,部分钻取地热井存在遭遇高温硬地层的情况,常规PDC钻头存在耐高温性能差、硬度略低、耐磨性不足等... 详细信息

随着新时代对绿色环保资源的需求日渐旺盛,地热资源即将进入大规模开发阶段。为经济、高效获取地热资源,目前主要应用的是PDC钻头。但是,部分钻取地热井存在遭遇高温硬地层的情况,常规PDC钻头存在耐高温性能差、硬度略低、耐磨性不足等问题。本文总结了深部高温硬地层钻进时PDC切削齿受到磨粒磨损,冲击磨损,热损伤等3种磨损机理,介绍了4种提高PDC切削齿耐高温性,硬度及耐磨性的方法:涂层技术、改善钻进参数,复合钻头和钎焊切削齿。根据目前研究情况,建议单个PDC切削齿实验可以从实现独立分析与切削齿关联性相结合方面展开,通过动态建模和工作状态实时模拟优化设计方案。

关键词：绿色能源地热高温 PDC 磨损复合钻头

Overexpression of α-synuclein caused mitochondria vacuolization and mitochondrial membrene potential to decrease by interacting with voltage-dependent anion channel

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Overexpression of α-synuclein caused mitochondria vacuoliza...

中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： Lingling LU,Yuangang ZHU,Chunyan ZHANG,Xiaohong SUN,Shasha ZHAO,Pusheng GONG,Hui YANG~* beijing Institute for Neuroscience,Capital Medical University(CMU),beijing Center of Neural Regeneration and Repairing,Key Laboratory for Neurodegenerative Diseases of Ministry of Education,beijing 100069,china

＜正＞We previously found that alpha-Synuclein（Syn） localized not only in neuclei but also in axons and cytoplasm,especially enriched in *** of accumulating evidence showing that overexpression of Syn could partly mimic the symptom of Parkison’s disease（PD）,the exact mechanism remains *** find out the subcelluar localization of Syn in substantia nigra（SN） neurons especially on mitochondria and its effect on mitochondria in Syn induced PD rats model may help explain the pathogenesis of Syn in *** the present study,the synuclein gene was introduced into the SN of rats using recombinant adeno-associtaed viral（rAAV） *** immunogold electron microscopic technique,we found that the density of Syn-positive gold particles was greater in both substantia nigra and striatum in PD rat model than in the control *** compare the distribution of Syn in different cell compartment with the control group,the density of Syn-positive gold particles was greater in neuclei, axons,cytoplasms,especially mitochondria in SN of PD rat model,while the density of gold particles decreased to zero in pre-synaptic *** with the SN regeon,the density of gold particles increased mainly in pre-synaptic terminals,cytoplasm and neucleus in PD rat model,with no difference in axons and mitochondria. The changed distribution of Syn in different cell compartments in PD rat model suggested that high content Syn may be involved in axon transport,plasticity of synapse and gene ***,we also observed that mitochondria were damaged when its membrene potential *** an interaction between Syn and voltagedependent anion channel（VDAC） was also *** together,the current data suggested that Syn may be involved in the maintainance of mitochondria membrene potential and energy metabolism by interacting with permeability transition pore（PTP） protein VDAC,which may play a role in PD pathogenesis.

关键词： Parkinson’s disease a-Synuclein electronmicroscope subcellular localizations mitochondria dysfunction

Study of Dependence of Quasi-Particle Alignment on Proton and Neutron Numbers in A=80 Region through g-factor Measurements

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Study of Dependence of Quasi-Particle Alignment on Proton an...

第十四届全国核物理大会暨第十届会员代表大会

作者： Fan Ping, Yuan Daqing, Zheng Yongnan, Zuo Yi, Zhou Dongmei, Zhang Qiaoli, Wu xiaoguang, Li Guangsheng, Zhu Lihua, Xu Guoji, Fan Qiwen, Zhang Xizhen and Zhu Shengyun china Institute of Atomic {2., P.O. Box 2.5-50, beijing 102.13

The interplay between the collective rotation and the quasi-particle alignment is a significant feature of nuclear structure at high *** g-factors of intra-band high spin states of the ground rotational

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Experimental Study on Characteristics of MSW Pyrolysis Gas

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Experimental Study on Characteristics of MSW Pyrolysis Gas

7th World Congress on Recovery, Recycling and Re-integration

作者： Hanqiao Liu, Jiuju Cai SEPA Key Laboratory on Eco-industry, Northeastern University, P.O Box 345, Shenyang, Liaoning, china Xiangjun Bao Shougang Technical Research Institute, {2., china

Based on metallurgical coking technology, a new interlayer pyrolysis system of municipal solid waste (MSW) is put forward by combining out-heating pyrolysis technology with regenerate combustion technology. The system has such advantages as quit innocuity, little secondary pollution and high recycling efficiency. There is certain requirement for the quantity and quality of the pyrolysis gas to supply the energy for maintaining the reaction temperature of the pyrolysis system. To provide reasonable operating conditions of the system, experiments were carried out in a homemade indirect resistance furnace (2. kW). 1 kg sample consisting of vegetable, plastics, paper and woods as typical components of MSW was used The effects of process conditions including temperature, heating rate, moisture and amount of blending coal on pyrolysis gas characteristics such as yield, composition and calorific value were studied. Some conclusions can be drawn from the experimental results: (1) In pyrolysis of MSW, the gas yield increases with final pyrolysis temperature increasing. high heating rate favors cracking of the hydrocarbons in gaseous products, and thus increases the content of H2. (2. There is a prominent influence of the moisture of MSW on pyrolysis gas. The lower the moisture, the higher the yield and the calorific value of recycled gas, (3) The pyrolysis time is shortened when the amount of blending coal is increased because it increases the bed porosity, improving the heat transfer. The blending coal can also improve the stability of gas products

关键词： pyrolysis, MSW, indirect resistance furnace, gaseous characteristics, coal

Can Uranium(Ⅻ) Hexoxide UO6(Oh) Exist? A Relativistic DFT Study

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Can Uranium(Ⅻ) Hexoxide UO6(Oh) Exist? A Relativistic DFT S...

中国化学会第五届全国结构化学学术会议

作者： Hai Xiao Jun Li Department of Chemistry and Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education,Tsinghua University,beijing 100084,china

Pursuing extreme oxidation states is one of the fascinating subjects with potential applications in ***,fundamental understanding of actinide chemistry under extreme conditions is required to develop advanced nuclear energy *** of the semi-core nature of the U 6p electrons,the extremely high oxidation state Ⅻ in the octahedral UO complex was

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纳米流体热量传递的研究进展

河南大学学报（自然科学版） 2018年第2期48卷 223-235页

作者：姚远廉永旺龚宇烈陈颖中国科学院广州能源研究所广州510640 广东工业大学广州510006

低传热性能的换热工质已成为目前开发新一代高效换热器的主要障碍.纳米粒子制备技术的迅速发展,使得传统的纯液体传热工质中添加高导热系数的纳米粒子,制成稳定的纳米流体成为可能.纳米流体作为一种新型的高效传热工质日益受到热科学技... 详细信息

低传热性能的换热工质已成为目前开发新一代高效换热器的主要障碍.纳米粒子制备技术的迅速发展,使得传统的纯液体传热工质中添加高导热系数的纳米粒子,制成稳定的纳米流体成为可能.纳米流体作为一种新型的高效传热工质日益受到热科学技术领域研究人员的高度关注,在过去2.年里做了大量的研究工作,目前已经在下述几个方面取得了突破性的研究进展:1)建立了纳米流体导热系数的理论模型,纳米流体表观导热系数的计算公式逐渐得到认可.2.通过大量的实验研究,归纳总结了很多种类纳米流体导热系数的基本实验数据.3)建立了基于微对流和微扩散效应的纳米流体对流换热准则关联式.4)纳米流体在矩形空间的自然对流传热的数值模拟和池内沸腾换热的实验研究取得了较大进展.本文主要对以上几个方面的最新研究成果做了综述,最后对纳米流体强化传热技术的研究进展和存在问题进行了总结和展望.

关键词：纳米流体导热系数强化对流自然对流沸腾换热

肾上腺素对大鼠肢体血管壁释放纤溶酶元活化素的作用

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生理科学 1988年第5期 305-309页

作者：朱广瑾 Musscni L 中国医学科学院基础医学研究所病理生理研究室意大利Mario Negri药理研究所北京

本文利用大鼠下肢血管灌流模型、纤维蛋白平板纤溶测定及纤维蛋白自显影技术,研究肾上腺素对血管壁释放纤溶酶元活化素（PA）的影响。结果表明,2.μM肾上腺索诱导PA活力明显增加,经鉴定这种肾上腺素所诱导释放的PA是分子量为67000道尔... 详细信息

本文利用大鼠下肢血管灌流模型、纤维蛋白平板纤溶测定及纤维蛋白自显影技术,研究肾上腺素对血管壁释放纤溶酶元活化素（PA）的影响。结果表明,2.μM肾上腺索诱导PA活力明显增加,经鉴定这种肾上腺素所诱导释放的PA是分子量为67000道尔顿、组织类型的纤溶酶元活化素（t-PA）,这种PA释放作用能为β受体拮抗剂心得安阻断,外源性cAMP能模仿肾上腺素的这一作用。提示肾上腺素诱导t-PA释放作用可能部分通过β肾上腺能受体介导,经cAMP增加的途径。

关键词：纤溶酶元活化素组织类型纤溶酶元活化素纤维蛋白自显影心得安

一种基于MongoDB和Hadoop的海量非结构化物联网数据处理方案

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微电子学与计算机 2018年第4期35卷 68-72,78页

作者：杨鹏林俊晖重庆邮电大学通信与信息工程学院重庆400065 中国信息通信研究院北京100191 重庆高校市级光通信与网络重点实验室重庆400065

随着物联网数据种类的增多和数据规模的增大,对物联网数据的存储和计算提出了新的挑战,为了应对海量非结构化物联网数据的存储和计算要求,提出了一种NoSQL数据库技术与MapReduce编程框架相结合的方案.使用典型的NoSQL数据库MongoDB作为... 详细信息

随着物联网数据种类的增多和数据规模的增大,对物联网数据的存储和计算提出了新的挑战,为了应对海量非结构化物联网数据的存储和计算要求,提出了一种NoSQL数据库技术与MapReduce编程框架相结合的方案.使用典型的NoSQL数据库MongoDB作为主数据库来存储海量非结构化的物联网数据,使用Hadoop MapReduce作为对物联网数据分析处理的计算框架.通过对MongoDB集群和Hadoop集群的重叠部署,降低了计算时数据传输的开销,构建了一套高可用、高性能的物联网大数据处理平台.通过使用该方案对海量非结构化物联网数据的处理分析实验验证了该方案的高可用性及高效性.

关键词：物联网大数据 NoSQL Hadoop平台 MongoDB数据库