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Dynamic forecasting and optimal scheduling of by-product gases in integrated iron and steel works

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Journal of Iron and Steel Research International 2019年第5期26卷 529-546页

作者： Qi zhang Hui Li Jia-lin Ma Hua-yan Xu Bo-yang Yu gang Wang Shan Jiang State Environmental Protection Key Laboratory of Eco-Industry Northeastern University Shenyang 110819 Liaoning China State Key Laboratory of Hybrid Process Industry Automation Systems and Equipment Technology Automation Research and Design Institute of Metallurgical Industry Beijing 100072 China Software College Northeastern University Shenyang 110169 Liaoning China Shougang Jingtang United Iron & Steel Co. Ltd. Tangshan 063200 Hebei China China United Engineering Company Hangzhou 310052 Zhejiang China

The by-product gases, which are generated in ironmaking, coking and steel making processes, can be used as fuel for the metallurgical processes and on-site power plants. However, if the supply and demand of by-product gases are imbalanced, gas flaring may occur, leading to energy wastage and environmental pollution. Therefore, optimal scheduling of by-product gases is important in iron and steel works. A BP_LSSVM model, which combines back-propagation (BP) neural network and least squares support vector machine (LSSVM), and an improved mixed integer linear programming model were proposed to forecast the surplus gases and allocate them optimally. To maximize energy utilization, the stability of gas holders and boilers was considered and a concise heuristic procedure was proposed to assign penalties for boilers and gas holders. Moreover, the optimal level of gas holder was studied to enhance the stability of the gas system. Compared to the manual operation, the optimal results showed that the electricity generated by the power plant increased by 2.93% in normal condition and by 22.2% in overhaul condition. The proposed model minimizes the total cost by optimizing the boiler load with less adjustment frequency and the stability of gas holders and can be used as a guidance in dynamic forecasting and optimal scheduling of by-product gases in integrated iron and steel works.

关键词： Iron and steel works Back-propagation neural network Least squares support vector machine Mixed integer linear programming Dynamic forecasting Optimal scheduling

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哈尔滨市某污水处理厂提标改扩建工程设计

中国给水排水 2024年第10期40卷 64-68页

作者：王洪刚纪海霞程树辉北京市市政工程设计研究总院有限公司北京100082

哈尔滨市某污水处理厂现状设计规模为15×10^(4) m^(3)/d,出水水质执行《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级B标准。本次升级改扩建工程在原厂址将污水处理厂总规模扩容至25×10^(4) m^(3)/d,出水水质提标至一级A标准... 详细信息

哈尔滨市某污水处理厂现状设计规模为15×10^(4) m^(3)/d,出水水质执行《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级B标准。本次升级改扩建工程在原厂址将污水处理厂总规模扩容至25×10^(4) m^(3)/d,出水水质提标至一级A标准。CASS反应池改造采用CASS+MBBR工艺,重新划分功能区,并增加内回流功能;扩建工程采用多段A2O+MBBR生物池+矩形周进周出二沉池工艺,深度处理采用磁混凝澄清池+紫外消毒工艺。实际运行结果表明,出水水质稳定达标,通过除臭、噪声控制、污泥处理、建筑及景观设计有效化解了邻避效应,可为类似工程提供参考。

关键词：提标改扩建污水处理厂 CASS工艺 MBBR工艺磁混凝澄清池

一种基于磁阻式线圈的模拟冰雹发射装置设计与仿真

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强激光与粒子束 2024年第7期36卷 91-98页

作者：贾文霄李贞晓弯港石双慧南京理工大学瞬态物理全国重点实验室南京210014

基于光伏板模拟冰雹撞击试验的实际需求,开展了磁阻型线圈发射装置与脉冲功率源之间的匹配性研究。通过理论对续流前置型和续流后置型两种基本脉冲放电电路进行了适用性分析,结果表明,续流前置型脉冲放电电路与发射装置具有更优的匹配... 详细信息

基于光伏板模拟冰雹撞击试验的实际需求,开展了磁阻型线圈发射装置与脉冲功率源之间的匹配性研究。通过理论对续流前置型和续流后置型两种基本脉冲放电电路进行了适用性分析,结果表明,续流前置型脉冲放电电路与发射装置具有更优的匹配性。针对发射过程中剩余脉冲电流的反向制动问题,设计了一种可以快速消除剩余脉冲电流的泄能电路,用于改进续流前置型脉冲放电电路的拓扑结构,进一步提高其适用性,并借助仿真进行验证。结果表明,泄能电路能快速消除剩余脉冲电流的反向拉力影响,使抛体的发射性能显著提高,抛体出口速度相比传统放电电路提升50.8%,系统发射效率提高127.5%。该项研究可为磁阻式线圈发射技术应用在模拟撞击试验领域的研究提供参考。

关键词：模拟冰雹撞击试验磁阻型线圈发射装置脉冲功率源匹配性研究脉冲电流

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基于BIM技术的信息化监理方法研究

工程建设与设计 2024年第7期 148-150页

作者：朱志刚五洲工程顾问集团有限公司杭州310053

结合实际工程,对基于BIM技术的信息化监理方法进行研究。介绍该工程监理的主要内容,从人员组成、职责分工、监理机构3方面详细阐述BIM技术下工程监理组织结构的设计工作,并从质量管理、进度控制、成本管控及安全管理4方面总结基于BIM技... 详细信息

结合实际工程,对基于BIM技术的信息化监理方法进行研究。介绍该工程监理的主要内容,从人员组成、职责分工、监理机构3方面详细阐述BIM技术下工程监理组织结构的设计工作,并从质量管理、进度控制、成本管控及安全管理4方面总结基于BIM技术的信息化监理工作方法。

关键词：工程监理质量 BIM技术信息化

Research progress on pharmacological effect and mechanism of baicalein in Parkinson diseases

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中国药理学与毒理学杂志 2018年第4期32卷 341-342页

作者： Xiao-yue ZHAO Hai-gang WANG Qi-meng ZHOU Ping HE Guan-hua DU Beijing Key Laboratory of Drug Targets Identification and Drug Screening Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 China

Parkinson disease(PD) is characterized by the loss of dopaminergic neurons in the substantia nigra and deposition of cytosolic inclusions in surviving neurons(Lewy bodies),resulting in motor deficits and non-motor *** Levodopa remains the gold standard treatment for PD,side effects like dyskinesia followed by long-term use could notbe ***,there is a need for *** new *** is a flavonoid isolated from traditional Chinese herb,Scutellaria baicalensis *** laboratory discovered that baicalein could effectively attenuate neurotoxicity of 6-hydroxydopamine(6-OHDA) and promote the differentiation of PC12 cells through high throughput drug *** at the *** vivo studies have shown that baicalein exerts significant therapeutic effect,particularly in the attenuation of muscle tremor in 6-OHDA-lesioned *** on the result from the so far acquired knowledge and previous findings from our laboratory,we could consider *** mechanism of baicalein focus on the activities ofanti-oxidation and *** could prevent oxidative stress and apoptosis through maintaining the mitochondrial function,inhibition of collapse of mitochondrial membrane potential,increase the activity of antioxidant enzymes and restraint of lipid peroxidation via several pathways such as Keap1/Nrf2/***-inflammatory activity of baicalein exert by attenuating activation of astrocyte and microglia,as well as the production of cathepsin B and ***,promoting the degradation of α-synuclein contributes to the neuroprotective effect of baicalein against Lewy bodies ***,baicalein also modulates the metabolic balance between glutamate(GLu) and gamma-aminobutyric acid(GABA).Overall,*** could protect nervous systemby inhibiting oxidative damage and neuroinflammation caused by environmental and genetic *** article reviewed the developments of studies on pharmaco

关键词：帕金森病治疗方法黄芩素临床分析

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具有无线传输功能的声发射传感单元设计

航天器环境工程 2024年第3期41卷 349-355页

作者：李尚科陈英瑜綦磊冯渝张子罡李刚杨中华何新中广核核电运营有限公司深圳518031 北京卫星环境工程研究所北京100094 天津大学精密测试技术及仪器国家重点实验室天津300072

为提高大型复杂设备结构健康检测的效率和检测精度,文章提出一种具有无线传输功能的声发射传感单元的设计:其硬件包括测量传感器、校准传感器和电路板等;通过上位机软件实现无线组网、信号的自动采集和实时传输等功能。对该传感单元的... 详细信息

为提高大型复杂设备结构健康检测的效率和检测精度,文章提出一种具有无线传输功能的声发射传感单元的设计:其硬件包括测量传感器、校准传感器和电路板等;通过上位机软件实现无线组网、信号的自动采集和实时传输等功能。对该传感单元的无线传输距离和检测灵敏度等指标进行了测试。结果表明:该传感单元可实现24 cm厚水泥墙遮挡下40 m距离或空旷环境下80 m距离的稳定数据传输;无线组网信号同步精度优于10μs;能探测到碳钢板中8 m范围内0.286 m^(3)/h的泄漏率。该设计方法对于大型装备的声发射检测工程应用有参考意义。

关键词：声发射检测无线传输时钟同步传感单元

Clinical observation of gastric bypass in treatment of type 2 diabetes

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Chinese Medical Journal 2012年第11期125卷 1899-1902页

作者： PU Yong-dong LI Jing-quan CAO Zhi-yu WANG Li HU Xiao DONG Li-guo LI yue-min ZHAO Hua-zhou QIN Rong YANG Bo HE Jiao-miao WU You-jun WANG Yi LU gang zhang Bo WANG yue LIU Wei-ping WENG Jian-feng Department of General Surgery 309th Hospital of People＇s Liberation Army Beijing 100091 China

Background Roux-en-Y gastric bypass （GBP） is the main surgical procedure used in type 2 diabetes. The objective of this study was to evaluate the different types of GBP in treatment of type 2 diabetes. Methods Patients with type 2 diabetes were randomly divided into two groups： those who underwent gastrojejunal loop anastomosis bypass and those who underwent gastrojejunal Roux-en-Y bypass. Blood glucose alterations, operation time, and operation complications were observed. Results Gastrojejunal loop anastomosis bypass and gastrojejunal Roux-en-Y bypass were both effective in the treatment of selected patients with type 2 diabetes. Compared with gastrojejunal Roux-en-Y bypass, gastrojejunal loop anastomosis bypass had the advantages of easier implementation, shorter operation time, and fewer operation complications. Conclusions Gastrojejunal loop anastomosis is effective in treatment of type 2 diabetes. It is safe, easy to implement, and worthy of clinical popularization.

关键词： gastric bypass type 2 diabetes loop anastomosis

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航空背景下“工程制图”课程思政课堂构建

教育教学论坛 2024年第11期 177-180页

作者：张冉阳赵刚要郭正华南昌航空大学航空制造工程学院江西南昌330063

航空专业背景下的“工程制图”,不仅具有一般工科工程图绘制的基本特征,而且涉及飞行器常用零部件特有的绘制方法、飞行器零件图画法规定及其装配图画法规定等。针对具有航空特色专业的“工程制图”课程教学,引领航空文化融入“工程制... 详细信息

航空专业背景下的“工程制图”,不仅具有一般工科工程图绘制的基本特征,而且涉及飞行器常用零部件特有的绘制方法、飞行器零件图画法规定及其装配图画法规定等。针对具有航空特色专业的“工程制图”课程教学,引领航空文化融入“工程制图”教学全过程,深挖“工程制图”教学内容中蕴含的思政元素,构建“工程制图”思想政治理论课堂,把思想政治教育有机融入“工程制图”教学全过程;在培养学生形体想象、创造和工程设计能力的同时,致力于培养具有优秀团队合作精神、工匠精神和忠诚奉献、航空报国精神的高素质人才。

关键词：航空文化工程制图课程思政思政元素

New high-strength Ti–Al–V–Mo alloy: from high-throughput composition design to mechanical properties

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International Journal of Minerals,Metallurgy and Materials 2019年第9期26卷 1151-1165页

作者： Di Wu Wan-lin Wang Li-gang zhang Zhen-yu Wang Ke-chao Zhou Li-bin Liu School of Metallurgy and Environment Central South UniversityChangsha 410083China School of Material Science and Engineering Central South UniversityChangsha 410083China Key Laboratory of Non-Ferrous Metallic Materials Science and Engineering Ministry of EducationChangsha 410083China State Key Laboratory of Powder Metallurgy Changsha 410083China

The high-throughput diffusion-multiple technique and thermodynamics databases were used to design new high-strength Ti alloys. The composition–microstructure–property relationships of the Ti64–xMo alloys were obtained. The phase fraction and composition of the α and β phases of the Ti64–xMo alloys were calculated using the Thermo-Calc software. After aging at 600℃, the Ti64–6 Mo alloy precipitated ultrafine α phases. This phenomenon was explained on the basis of the pseudo-spinodal mechanism by calculating the Gibbs energy curves of the α and β phases of the Ti64–xMo alloys at 600℃. Bulk forged Ti64–6 Mo alloy exhibited high strength and moderate plasticity after α/β-phase-field solution treatment plus aging. The tensile properties of the alloy were determined by the size and morphology of the primary and secondary α phases and by the β grain size.

关键词： high-strength titanium alloy Ti–6Al–4V–xMo diffusion multiple Thermo-Calc microstructure and mechanical properties