Results 1 to 10 of about 1,452,368 (162)
Gaoya dianqi, 2021 SF6/N2混合气体具有良好的绝缘性能和一定的开合电流能力并且可以降低对局部电场畸变的敏感程度、解决SF6气体的液化问题,可以大大减少SF6气体的使用量和排放量,减小对环境的温室效应影响,对加强节能减排和实现低碳发展具有重要意义。近年来,国家电网公司为响应国家节能减排号召,组织开展了SF6/N2混合气体用于GIS母线、隔离和接地开关的工作,研究确定了SF6/N2混合气体GIS母线、隔离和接地开关采用统一的30%混合比（SF6:N2=30%:70%）,多个厂家的产品通过了型式试验和新产品技术鉴定 ...
季严松 +8 more
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The electrocatalytic water splitting technique was widely taken for hydrogen evolution, due to its cost‐effectiveness and environmental friendliness. The design of electrode material as electrocatalysts play a key role in achieving high efficiency.
Yaling Zhu +5 more
wiley +1 more source
Gaoya dianqi, 2012 SF6气体在设备发生绝缘故障时,可生成SO2、H2S等分解产物。随着检测技术的发展,可将此类分解产物作为故障诊断的特征气体。笔者首先介绍了SF6分解物生成的相关机理和研究现状,回顾了分解物的测试技术以及设备故障诊断模型,进而分析了该技术目前存在的主要问题。通过SF6分解物检测技术,确认了2台500 kV SF6 CT内部绝缘故障,为设备故障诊断提供了有效的检测手段。
廖建平, 骆晓龙
doaj
The Tariff Trap: Why Funding Health Programs Through Tariffs Harms Both Health and Democracy
World Medical &Health Policy, Volume 18, Issue 2, June 2026.ABSTRACT In 2025, the Trump Administration imposed significant tariffs on imports to the US as part of aggressive trade negotiations with other countries. Tariffs have important impacts on health that include increases in the prices that consumers and businesses pay for goods and potential damage to global supply chains.
Holly Jarman, Miranda Yaver
wiley +1 more source
, 2014 一种分析煤热解低分子产物的方法，该方法采用煤样处理、原位热解飞行时间质谱分析、数据分析等步骤。将煤样处理后经过程序升温飞行时间质谱分析，系统灵敏度高，分辨率好，利用紫外光电离（PI）源可检测煤热解过程中的低分子产物 ...
张世宇 +5 more
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, 2006 在自行设计的木质纤维素类生物质超低酸水解装置上，结合以木聚糖和定量滤纸为模化物得到的半纤维素和纤维素水解的最佳工况，对白松、速生杨和玉米秸杆这三种在我国分布较为广泛的木质纤维素类生物质原料进行了高压液态水和超低酸水解相结合的两步水解研究，分别得到41.78％、57.84％和53.44％的原料转化率和39.28％、42.83%和23.82％的总还原糖转化率，并以HPLC定性了糖类产物，对产物中的低聚糖和单糖含量做了对比 ...
岑可法 +3 more
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Functional Ecology, Volume 40, Issue 6, Page 1725-1739, June 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Root exudates play a key role as signals and nutrients in mediating plant–microbe communication. However, critical knowledge gaps remain regarding how root exudates mediate soil–microbe–plant interactions to regulate crop yield under long‐term straw mulching combined ...
Jiajie Song +7 more
wiley +1 more source
Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
, 2015 以聚烯烃塑料为裂解原料,在间歇反应釜中进行轻度热裂解,加热速率3—5℃/min,温度400℃,停留时间0—80 min;制取液相石油烃。为克服热裂解过程中的传热不均匀,提高热裂解产物轻质馏分的含量,进行了部分热裂解产物返回作为原料与聚烯烃塑料进行共裂解的实验探究,并对其裂解气相产物进行了气相色谱分析,液相产物进行了红外光谱、核磁共振氢谱表征以及GC-MS定量分析。结果表明:在400℃进行共裂解,液相产物平均收率约为90%,所得液相石油烃C数分布广,主要组分为链烷烃 ...
项曙光, 闫国荀, 景晓东, 温浩
core
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract In the western United States, conservation practitioners are increasingly working with private landowners to restore habitat for North American beavers (Castor canadensis) and to use nonlethal mitigation techniques when beavers damage crops and infrastructure.
Brian D. Erickson, Megan S. Jones
wiley +1 more source