Results 21 to 30 of about 8,908 (123)
Effect of Cl/S and Na interaction on ash deposition mechanism at the inlet of Shell gasifier syngas cooler [PDF]
The Shell dry pulverized coal pressurized gasification is one of the important technologies for the clean and efficient utilization of coal. Ash deposition at the inlet of the syngas cooler caused by alkali metal compounds is the main reason for the ...
Baoming ZHAO +8 more
core +1 more source
Wildlife Letters, Volume 2, Issue 1, Page 44-59, March 2024.The sea turtle flipper tagging technique: is a tenet management technique generating continuous scientific data worldwide since over a century. presents a very low risk of expression of a fibropapillomatosis lesion at the tag insertion point correlated to a direct inoculation of ChHV5 via infected tagging equipment, and a risk of entanglement in ...
Claire Saladin, Daniela Freggi
wiley +1 more source
, 2007 介绍了网络视频监控系统中云台控制模块的设计与实现,包括简单电路原理说明、单片机控制程序设计和嵌入式系统的驱动及控制程序设计。云台控制属于整个系统的一个功能模块,首先由DSP(BSP-15)将网络用户的云台控制操作解释为符合标准云台控制协议的命令,通过IC发送命令给单片机(87LPC764),再由单片机通过RS-485串口将云台控制信息转发给云台摄像机,从而完成整个控制过程。
权立伟, 石江宏, 薛财锋
core
Evaluation on pipeline steel adaptability for extended hydrogen-contacting service [PDF]
Objective The centralized supply of hydrogen resources and the rapid growth in market demand have made large-scale hydrogen transportation via long-distance pipelines a promising trend for future hydrogen energy supply, given its significant economic ...
Cuiwei LIU +8 more
core +1 more source
Gaoya dianqi, 2018 随着中国对能源的需求日益增加,特高压直流输电工程与长输管道工程的修建正大规模地进行。当直流接地极单极运行时,会有部分电流流入埋地金属管道,使金属管道发生电化学腐蚀,加速管道的破损。该文旨在系统地介绍特高压直流接地极入地电流对金属管道腐蚀的研究,包括管道在直流入地电流作用下加速腐蚀的机理及影响因素分析,入地杂散电流的检测评估方法及实际工程中典型的管道防腐措施介绍。对比由于电气化铁轨入地电流引起的管道腐蚀所采取的解决方案,对特高压直流接地极引起的管道腐蚀进行分析,最后给出相关研究方向的展望 ...
廖敏夫 +5 more
doaj
Process optimization of the first set of fluidized bed methanol to propylene plant [PDF]
In order to successfully complete the commissioning of the first industrial demonstration unit of methanol to propylene FMTP in fluidized bed, through the investigation and technical exchange of similar enterprises using methanol to olefin (DMTO ...
Guoliang DONG +7 more
core +1 more source
500 kV同塔双回输电线路下平行排列油气管道上的感应电压和感应电流仿真分析
Gaoya dianqi, 2017 高压输电线路下方存在平行油气管道,静电感应和电磁耦合产生的感应电压和感应电流会加速管道的腐蚀。文中利用ATP/EMTP仿真软件建立了同塔双回输电线路模型和输油管道的仿真模型,考虑了线路运行电流大小、平行管道长度、土壤电阻率大小、杆塔呼称高度以及管道偏离杆塔中心线距离等因素对感应电压、感应电流分量的影响。研究结果表明:油气管道上的静电感应分量主要受平行金属管道长度、杆塔呼高度和管道偏离杆塔中心线距离的影响;管道上的电磁感应分量主要受运行电流的大小、平行金属管道长度、土壤电阻率的大小 ...
潘俊文, 罗日成, 吴东
doaj
The Study on Competitive Strategies of B&D Xiamen Based on Value Chain Analysis [PDF]
, 2008 20世纪80年代以来，越来越多的跨国制造业公司在中国设厂，利用中国价廉的劳动力、政府吸引外资的优惠政策以及中国巨大的市场空间，改变企业价值链上的采购、生产和销售等环节的竞争战略，拓展业务创造更多利润。作为跨国公司的百得集团亦在2006年投资中国成立了百得(厦门)工业有限公司。“百得厦门”快速发展，在质量、交期服务方面已远远优于其它亚洲供应商。但面临美国市场疲软、原材料价格不断上涨、人民币持续升值、已有和潜在的其它亚洲供应商的强有力的价格竞争等机会和风险，“百得厦门”如何持续发展 ...
杨升琴
core
High-quality development path for methanol and reconfiguration of its storage and transportation system driven by the “dual carbon” goals [PDF]
ObjectiveAmid the “carbon peaking and carbon neutrality” strategy and energy structure transformation, China faces challenges such as new energy power consumption hurdles and low utilization rates of traditional oil and gas pipelines.
Shangxin ZHAO
core +1 more source
Gaoya dianqi, 2019 随着直流输电工程建设的快速发展及直流输电工程与埋地金属管道相邻不断增多,接地极极址的选择变得越来越困难。接地极对管道直流腐蚀影响的程度不仅与接地极电流和接近距离有关,还与土壤电阻率、土壤pH值和管道防腐层类型有关。文中在管道电路模型的基础上,建立了考虑管道极化效应的电路模型。通过文中计算方法的计算结果与CDEGS计算结果的对比,验证了文中算法的正确性。获得了典型设计参数下接地极与埋地金属管道的可供工程参考的防护距离,分析了土壤电阻率、土壤pH值、管道防腐层类型对接地极电流干扰下管道防护距离的影响 ...
曹方圆, 白锋
doaj