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GB/T 20728-2021封闭管道中流体流量的测量 科里奥利流量计的选型、安装和使用指南Measurement of fluid flow in closed conduits. Guidance to the selection, installation and use of Coriolis flowmeters
GB/T 20728-2021封闭管道中流体流量的测量 科里奥利流量计的选型、安装和使用指南Measurement of fluid flow in closed conduits. Guidance to the selection, installation and use of Coriolis flowmeters...
2022-03-18 17:24:56浏览:42
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GB/T 5169.9-2021电工电子产品着火危险试验 第9部分:着火危险评定导则 预选试验程序 总则Fire hazard testing for electric and electronic products. Part 9: Guidance for assessing the fire hazard. Preselection testing procedures. General guidelines
GB/T 5169.9-2021电工电子产品着火危险试验 第9部分:着火危险评定导则 预选试验程序 总则Fire hazard testing for electric and electronic products. Part 9: Guidance for assessing the fire hazard. Preselection testing procedures. General guidelines...
2022-03-14 21:42:27浏览:41
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ASTM F1257-2013选择的标准指南和紧急医疗服务讲师高级救护技术员实践Standard Guide for Selection and Practice of Emergency Medical Services Instructor for Advanced Emergency Medical Technician
ASTM F1257-2013选择的标准指南和紧急医疗服务讲师高级救护技术员实践Standard Guide for Selection and Practice of Emergency Medical Services Instructor for Advanced Emergency Medical Technician...
2022-03-14 21:37:27浏览:50
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先锋的技术选择(2013)pioneer's technology selection(2013)
“先锋项目”将是第一批采用碳捕获和封存综合方法的碳捕获和封存项目之一,并有望成为碳捕获和封存技术长期商业化应用和集成的原型,以实现温室气体减排。项目先锋的合作伙伴包括TransAlta公司(TransAlta)、Capital Power L.P(CPLP)、Enbridge公司(Enbridge)、艾伯塔省和加拿大联邦政府,以及作为知识共享合作伙伴的全球CCS研究所。项目先锋被提议每年从一个燃煤电厂(KePHEVES 31)捕获100万吨二氧化碳(CO2),并通过管道将CO2输送到一个封存地点...
2021-09-09 07:33:27浏览:21
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OPTIMAL PORTFOLIO ON TRACKING THE EXPECTED WEALTH PROCESS WITH LIQUIDITY CONSTRAINTS
In this article, the authors consider the optimal portfolio on tracking the expected wealth process with liquidity constraints. The constrained optimal portfolio is first formulated as minimizing the cumulate variance between the wealth process and the expected wealth process. Then, the dynamic programming methodology is applied to reduce the whole problem to solving the Hamilton-Jacobi-Bellman equation coupled with the liquidity constraint, and the method of Lagrange multiplier is applied to handle the constraint. Finally, a numerical method is proposed to solve the constrained HJB equation and the constrained optimal strategy. Especially, the explicit solution to this optimal problem is derived when there is no liquidity constraint....
2020-11-11 22:33:38浏览:35
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An integrated model for supplier selection process
In today's highly competitive manufacturing environment, the supplier selection process becomes one of crucial activities in supply chain management. In order to select the best supplier(s) it is not only necessary to continuously tracking and benchmarking performance of suppliers but also to make a tradeoff between tangible and intangible factors some of which may conflict. In this paper an integration of case-based reasoning (CBR), analytical network process (ANP) and linear programming (LP) is proposed to solve the supplier selection problem....
2020-11-10 09:33:08浏览:58
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Dendrite Spacing Selection during Directional Solidification of Pivalic Acid-Ethanol System
Unidirectional solidification of pivalic acid (PVA)-ethanol (Eth) mixture was performed to examine whether an allowable range of primary dendrite spacing definitely exists at a given growth velocity and how the range is history-dependent. PVA-0.59 wt pct Eth was unidirectionally solidified in the range of growth velocity 0.5-64 μm/s at the temperature gradient of 2.3 K/mm. Sequential change in growth velocity was imposed to determine the upper and lower limits for the allowable range of stable spacing. An allowable range of the steady state primary spacing was observed at a given growth velocity, and the extent of the range seems to be dependent on the degree to which step-increase or step-decrease in growth velocity is accomplished. As the degree of sequential change in growth velocity increases, the history-dependence of the selection for the primary dendrite spacing tends to disappear....
2020-10-22 17:35:41浏览:54
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公路挡土墙的设计及优化
通过对某一挡土墙的事故原因分析,进一步对挡土墙的设计计算方法以及结构选型进行了对比,并对挡土墙优化设计中的土压力计算的影响因素加以研究,得出了一些有指导意义的结论。...
2020-09-29 10:54:18浏览:43
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煤气化技术现状及技术选择浅析
介绍了煤气化技术发展现状,就煤气化技术的选择从不同角度进行了分析。目前而言,干煤粉气流床技术有一定优势,第三代技术实现工业化尚远。...
2020-07-10 14:39:05浏览:36
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Multi-agent immune recognition of water mine model
It is necessary for mine countermeasure systems to recognise the model of a water mine before destroying because the destroying measures to be taken must be determined according to mine model. In this paper, an immune neural network (INN) along with water mine model recognition system based on multi-agent system is proposed. A modified clonal selection algorithm for constructing such an INN is presented based on clonal selection principle. The INN is a two-layer Boolean network whose number of outputs is adaptable according to the task and the affinity threshold. Adjusting the affinity threshold can easily control different recognition precision, and the affinity threshold also can control the capability of noise tolerance....
2020-07-08 08:49:41浏览:45
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鲁奇气化炉气化废水萃取剂的选择
针对鲁奇气化炉气化废水的特点,通过对二异丙基醚、甲基异丁基酮和醋酸丁酯等萃取剂的物理性质、脱酚效果和COD脱除效果的比较,选择出一种对鲁奇气化炉气化废水最有效的脱酚萃取剂。...
2020-06-12 16:21:21浏览:1399
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Relation between silico-aluminous fly ash and its coal of origin
Fly ashes are typical complex solids which incorporate at the same time intrinsic properties derived from the layers (various mineralogical and dimensional spectra) and major transformations generated during prior processing. To use fly ashes in various applications, it is necessary to characterise them completely. The first research to date carried out on silico-aluminous fly ashes in order to characterise them physically,morphologically, chemically and mineralogically, resulted in the recognition that they are relatively simple materials. In the present study, a silico-aluminous fly ash coming from the power station of Albi (France) was selected. Heat treatment at 450 and 1200 ~C together with coal simulated the treatment undergone by coal in the power station in order to mimic real coal residue. In conclusion, the diversity of the particles contained in fly ash could only be explained by the relation existing between the fly ash and its coal of origin....
2020-06-12 16:17:36浏览:1398
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Type Selection of Burning Equipment for Slagging-Coal Boilers
The type selection of burning equipment for boilers is affected significantly by the slagging characteristics of coal.Based on the engineering statistics method,the designed furnace parameters are obtained from the 600 MW and 1 000-MW boilers with tangential firing and w~l firing.The power and arrangement of the burners are analyzed.Their impacts on slagging on heating surfaces and the carbon contents in the ash and cinders are also discussed.Thermal parameters of furnace are recommended for boilers of 600 MW and 1 000 MW firing slagging coal in the design.The static or rotary classifier should be the first choice for the pulverizing system....
2020-06-12 16:17:00浏览:1427
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从环保角度谈天然气加气站的选址
随着人们对经济、能源和环境问题的重视,天然气汽车技术发展很快。压缩天然气汽车已广泛用于城市交通。通过分析天然气加气站运行期间对环境产生的主要影响,明确了制约加气站选址的关键因素,提出了有关选址的意见和建议,为天然气加气站的建设科学选址提供参考。...
2020-06-12 14:51:06浏览:1398
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