Results 41 to 50 of about 12,063 (170)
Analysis of the atomization performance of hydrodynamic rotating spray dust suppression device with setting fan [PDF]
In recent years, with the significant improvement of mechanization and intelligence in coal mining in China, the amount of dust produced during working face operations has increased significantly, and higher requirements have been put forward for dust ...
Dejun WANG, Hui XU, Qinghua CHEN
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Sexuality, Gender &Policy, Volume 7, Issue 4, Page 348-365, November 2024.Abstract In the armed conflict between Kashmiri militancy and the Indian state forces, Kashmiri women have been relentless victims of abduction, rape, molestation, and cruel objectification by the militaristic patriarchs of both sides. In the context of the state's unaccountability, the rebuttal of justice is horrific in Kashmir.
Payel Pal, Goutam Karmakar
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World Medical &Health Policy, Volume 16, Issue 3, Page 506-513, September 2024.Abstract The preservation of the culturally important traditional herbal medicine practice in Ghana is threatened by the growth of allopathic medicine. It is argued that two main factors comprise this threat: significant safety concerns over many traditional herbal preparations, and a conflict in therapeutic frameworks which provides a substrate for ...
Benjamin Clay
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Impact resistance performance of rockbolt system with(out) rubber cushion energy absorbing and buffering components [PDF]
The practice of impact resistance support in dangerous roadways has shown that energy absorbing and buffering components can improve the impact resistance performance of rockbolt support systems. A rubber cushion layer was used as an energy absorbing and
Fuqiang GAO +8 more
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Veterinary Dermatology, Volume 35, Issue 3, Page 325-336, June 2024.Background – Norway spruce (Picea abies) resin‐based products are used in human medicine. A resin‐based otic rinse also could be useful in supportive care of canine otitis externa (COE), yet information on its antimicrobial effect against canine pathogens or ototoxicity is lacking.
Elina Aimo‐Koivisto +5 more
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Shuitu Baochi Xuebao, 2002 对不同林地根系分布特征及其对土壤抗冲增强效应进行研究,结果表明:毛竹林根系的63%集中在0～30cm土层;混交林有64%的根系分布在0～20cm土层;杉木林0～20cm土层中有占总根数42%的根系;柑橘林41%的根系分布在0～10cm土层,各林区根系随土层深度增加而迅速减少。根系对土壤抗冲性增强值表现出随土层深度增加而减小,同时也得出根系对土壤抗冲性增强值在小雨强下>中雨强下>大雨强下。直径≤1mm根系密度与土壤抗冲性增强值相关性达到极显著水平,并得出它们之间的函数关系 ...
王兆骞 张如良 等
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Research and practice on key technologies for coordinated green mining of shallowly buried multi-coal seam groups [PDF]
The multi-seam occurrence conditions in the western mining area have brought forth prominent and common issues such as "contradictions in mining face layout, variable overburden structure, and superimposed surface migration".
Desheng ZHANG +5 more
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Gaoya dianqi, 2020 冲击接地阻抗是影响输电线路防雷等级和雷击跳闸率的重要因素。目前,通常采用模拟试验或者仿真计算来研究冲击接地阻抗,无法真实反映接地体冲击接地特性。为了研究接地体在冲击电流下的特性,本文采用大型冲击电流发生器对接地体进行真型试验研究,以多种型式接地体为研究对象,讨论了冲击电流幅值和接地极尺寸对接地体冲击特性的影响并建立了接地体冲击接地阻抗EMTP仿真模型。试验结果表明,冲击电流幅值升高、接地体长度增加或截面直径增大都会使冲击接地阻抗降低,且接地体长度和冲击电流幅值的影响均出现饱和现象;仿真结果表明 ...
高峰 +5 more
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Shuitu Baochi Xuebao, 2007 对紫色土丘陵区不同土地利用类型土壤抗冲性特征及其主要影响因素进行研究，结果表明：（1）径流含沙量在土壤冲刷过程中总体呈递减趋势。但传统农耕地7～10min后径流含沙量有增大趋势，径流含沙量表现为传统农耕地（0.81g／L）〉农林混作型耕地（0.73g／L）〉园地（0.69g／L）〉竹林地（0.58g／L）；（2）在整个冲刷过程中，随着时间增加，土壤抗冲指数逐渐增大，竹林地抗冲性能最强，园地和农林混作型耕地抗冲性能较为接近，抗冲性能最弱的为传统农耕地；（3）土壤抗冲指数依次为竹林地（1．37min／g ...
陈晏, 史东梅, 文卓立, 张兵
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Dianci bileiqi, 2020 为了准确计算雷击杆塔时塔身的电压响应,针对杆塔的冲击特性已经开展了大量的研究,但这些研究大多针对单独的杆塔,未考虑线路中杆塔的情况。本文基于FDTD方法建立了雷击杆塔的计算模型,并通过设置电压引线和电流引线模拟了测试回路存在的情况。雷击杆塔时杆塔的冲击特性与电流波形密切相关,雷电流下杆塔的冲击特性介于阶跃电流和斜波电流下的冲击特性之间。当只考虑流入杆塔部分的电流和塔顶电位时,带线路杆塔的冲击阻抗取值与单独杆塔的冲击阻抗取值几乎无区别。对杆塔的冲击阻抗进行测量时 ...
李伟 +6 more
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