Results 91 to 100 of about 4,833 (164)
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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Shuitu Baochi Xuebao, 2020 通过田间试验，研究了硫酸铝（0，300，500，900，1 400 kg/hm2）施用对新开垦苏打盐碱水田的快速改良和培肥效果。结果表明：与不施用硫酸铝的对照处理相比，施用硫酸铝后土壤pH、全盐量、交换性钠、阳离子交换量和碱化度降低；可溶盐组成中，CO32-、Ca2+、K+、Na+含量通常降低，SO42-含量增加，而HCO3-、Cl-和Mg2+含量没有显著的变化，从而使得（CO32-+HCO3-）/（Cl-+SO42-）比值下降；土壤有机碳、胡敏酸碳、富里酸碳 ...
马玉涛 +5 more
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Synergistic mode of digitalization-intelligentization-greeniation of the coal industry and it’s path of building new coal productivity [PDF]
The coal industry is the ballast stone and stabilizer that supports the rapid development of China’s economy and society and ensures national energy security.
Feng LIU +3 more
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Development and Challenge of Flexible Operation Technology of Thermal Power Units Under New Power System [PDF]
Under the background of “dual carbon”, new energy sources have begun to be connected to the grid on a large scale. However, the randomness and volatility of new energy generation significantly impact the power grid, making it urgent to build a new power ...
LI Qi +5 more
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Shuitu Baochi Xuebao目的探究玉米（Zea mays L.）与不同科属绿肥（也称覆盖作物）间作对土壤耕层和亚耕层有机碳组分的影响，明确间作体系中微生物残体碳在土壤固碳中的贡献，为绿肥种植促进农田土壤固碳和地力提升提供理论支撑。方法田间设置玉米单作（MM）、玉米间作豆科绿肥毛叶苕子（Vicia villosa Roth.）（LM）、玉米间作禾本科绿肥黑麦（Secale cereale L.）（PM）3个处理，测定0~20、20~40 cm土壤有机碳（SOC）、SOC组分（颗粒态有机碳POC和矿物结合态有机碳MAOC ...
廖盼 +6 more
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Construction and application of green and low-carbon evaluation indicators for coal mining areas [PDF]
Coal mining areas serve as pivotal bases for coal production, holding significant importance for local economies and energy supply. In the development of China’s energy and environmental protection, the planning of mining areas plays a crucial role. With
Lei YU +8 more
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Shuitu Baochi Xuebao[目的] 陆地生态系统中的碳循环和水循环是陆地生态系统物质和能量循环的核心,也是连接地圈、生物圈和大气层的纽带。森林植被是陆地生态系统的重要组成部分,是表征陆地碳-水循环的重要变量,在维持生物圈和大气圈的动态平衡中发挥着重要作用。目前,对陆地生态系统中碳-水循环的耦合关系和机制缺乏系统的分析和总结。[方法] 从森林植被碳与水过程及其相互作用、植被水分利用和耦合机制的角度,综述了森林植被碳与水循环过程及其相互作用的研究与进展,以及不同空间尺度(叶片到区域/全球尺度)碳-水耦合的定义、方法、进展和展望 ...
余新晓, 武昱鑫, 贾国栋
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Gaoya dianqi放电产生的微小碳颗粒对变压器绝缘油性能的影响一直未得到行业足够的关注，天然酯和矿物油中碳颗粒产生机制的差异更是少有研究。文中以25号矿物绝缘油和FR3型天然酯绝缘油为对象，对比研究了油中碳颗粒的产生规律及其对油品电气性能的影响，分析了不同电击穿作用下两种绝缘油中产生碳颗粒的数量、粒径和形状等特征参数，并明确了碳颗粒对绝缘油击穿电压、介质损耗和直流电阻率等电气性能的影响。结果表明：随着击穿次数的增加，两种绝缘油中碳颗粒数量均呈上升趋势，且矿物油中碳颗粒数量约为天然酯的2～5倍；击穿后，两种绝缘油中80 ...
张晓琴 +6 more
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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
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