Results 71 to 80 of about 4,812 (226)
Jixie chuandong, 2008 基于较合理有效的气体渗碳工艺模型,深入研究了二维的齿轮气体渗碳的动力学和碳分布问题,所得出的实用性结论可供工程实际中制订齿轮气体渗碳工艺参考;进一步,还初步探讨了齿轮渗碳中的碳化物控制问题。
高新树, 董贵恒, 张志强
doaj
Gaoya dianqi, 2022 风电场中使用碳纤维叶片的风机正在逐年增多,为了研究碳纤维应用在风机叶片时的雷击附着特性,文中建立了碳纤维和玻/碳纤维混合风机叶片的三维电磁场仿真模型,基于有限积分法和理想边界拟合技术,通过计算不同材料叶片表面场强分布,分析了下行先导位置和叶片材料影响雷击附着特性的原因,研判了接闪器对碳纤维叶片的保护能力。研究结果表明:全碳纤维叶片表面场强分布特性与玻璃纤维叶片相似,但更早且更易产生上行先导;玻/碳纤维混合叶片表面场强分布受材料特性影响呈明显的差异化分布,碳纤维部分较玻璃纤维部分更易受雷击 ...
周歧斌 +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2007 采用浸渍法、一般离子交换和络合离子交换制备Zn/HZSM-5催化剂，用于甲烷和丙烷混合气的无氧芳构化研究，其中络合离子交换法制备的催化剂活性最好.在反应温度823 K，空速600 h-1，甲烷/丙烷摩尔比为5：1的条件下，丙烷转化率和芳烃选择性分别达99.93%和80.29%.Zn/HZSM-5上经CH4-C3H8芳构化反应后，表面存在至少两种类型的积碳，分别对应于CHx活性中间体，类石墨碳或石墨碳，前者可用高温H2消除，后者要在O2气氛下才能被消除 ...
XUANDong(宣东) +3 more
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Evaluation of environmental and economic benefits of CO_2 utilization technologies and their future development trends [PDF]
In 2022, global CO_2 emissions reached 36.07 Gt, but only 230 Mt of CO_2 were captured and utilized, accounting for just 0.64% of the total emissions.
GUO Zeyu +7 more
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砂岩中碳酸盐胶结物成岩流体演化和水岩作用模式—以川西孝泉-丰谷地区上三叠统须四段致密砂岩为例 [PDF]
, 2014 忠民 沈 +4 more
openalex +1 more source
Application and Prospect of AI Technology in Power System Development [PDF]
[Introduction] In the face of energy scarcity and carbon reduction imperatives, the transition to clean energy centered on electricity is crucial.
Bin SHU +4 more
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Haiyang yu huzhao牡蛎礁是蓝色碳汇的重要组成部分，其通过钙化作用、生物同化作用以及生物沉积作用等来完成对碳的封存，以达到碳中和的目的。目前我国关于热带天然牡蛎礁碳库储量的研究较少。文章评估了海南岛近岸4处典型天然牡蛎礁(文昌龙楼、文昌会文、昌江昌化和儋州海头)的碳库储量，并分析了其时空变化特征及其原因。结果表明，4处礁区的现存总碳库储量为18 734.6 t C，长期总碳库储量为16 883.08 t C。其中海头、昌化、龙楼和会文的现存碳库储量及单位面积平均碳库储量分别为15 923.42 t C (3.46 kg C/
施 凯 +6 more
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Accurate monitoring and accounting of methane emission in underground coal mine [PDF]
Methane, the second most prevalent greenhouse gas globally, is characterized by its high global warming potential and short atmospheric lifetime. It is primarily emitted from sectors such as coal mining, oil and gas production, agriculture, livestock ...
Beijing XIE +7 more
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