Results 41 to 50 of about 10,124 (161)
Investigation of the internal failure mechanism of laser-additively manufactured nickel-based superalloy [PDF]
Nickel-based superalloys exhibit excellent high strength and thermal fatigue resistance at 650 ℃, making them widely used for manufacturing elevated-temperature components such as turbine blades for aero-engines.
Chuanwen SUN, Rui SUN, Wei LI
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An assessment of future rewilding potential in the United Kingdom
Conservation Biology, Volume 38, Issue 4, August 2024.Abstract Restoring ecosystems is an imperative for addressing biodiversity loss and climate change, and achieving the targets of the Kunming–Montreal Global Biodiversity Framework. One form of restoration, rewilding, may have particular promise but may also be precluded by requirements for other forms of land use now or in the future.
C. Brown, R. Prestele, M. Rounsevell
wiley +1 more source
应用医疗失效模式与效应分析优化新生儿预防接种流程的探讨 [PDF]
, 2012 [目的]探讨应用医疗失效模式与效应分析(HFMEA)改进新生儿预防接种流程的效果。[方法]选取2009年出生的1 000名新生儿为对照组,新生儿出生24h内在爱婴区同时进行卡介苗和乙型肝炎疫苗接种;选取2010年出生的1 000名新生儿为实验组,应用HFMEA对新生儿预防接种流程进行分析,针对高危流程制定并实施有效的控制措施。[结果]新生儿出生24h内乙型肝炎疫苗接种率对照组为95%、实验组为100%;实验组卡介苗接种不良反应发生率明显低于对照组 ...
吴柳玲, 沈曲, 王定清, 袁中草
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Dutch landscapes have lost insect‐pollinated plants over the past 87 years
Journal of Applied Ecology, Volume 61, Issue 6, Page 1323-1333, June 2024.This study implies that Dutch landscapes are losing insect‐pollinated plant species, which is likely due, at least in part, to the decline in pollination services. Our results of quantifying the decline in insect‐pollinated plants support the necessity and urgency of taking conservation initiatives.
Kaixuan Pan +3 more
wiley +1 more source
The importance of equity in payments to encourage coexistence with large mammals
Conservation Biology, Volume 38, Issue 3, June 2024.Abstract Large mammals often impose significant costs such as livestock depredation or crop foraging on rural communities, and this can lead to the retaliatory killing of threatened wildlife populations. One conservation approach—payments to encourage coexistence (PEC)—aims to reduce these costs through financial mechanisms, such as compensation ...
Joseph Hamm +2 more
wiley +1 more source
Shiyou jixie, 2014 针对插入式隔水管应急装备失效问题，应用BowTie与AHP相结合的方法开展综合风险分析。首先构建插入式隔水管失效BowTie分析模型，对BowTie左侧失效致因进行提炼归纳，建立递阶层次分析模型，然后参考BowTie右侧安全屏障及失效发展，构造因素间判断矩阵，确定失效致因权重，并从多角度提出风险预防控制措施。分析结果表明，BowTie与AHP相结合的综合风险分析方法能够全面系统地分析插入式隔水管应急装备在应用过程中的风险，对其他石油装备的风险管理具有重要参考意义。
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Failure behavior analysis of high stiffener web height I-girders of cruise ships considering initial welding defects [PDF]
ObjectiveHigh stiffener web height I-girders on large cruise ships are made of thin welded plates, which lead to noticeable weld distortion and stresses during manufacturing, and can affect the load-bearing characteristics of the structure. Therefore, in
Chen CHEN +4 more
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A standard approach for including climate change responses in IUCN Red List assessments
Conservation Biology, Volume 38, Issue 3, June 2024.Abstract The International Union for Conservation of Nature (IUCN) Red List is a central tool for extinction risk monitoring and influences global biodiversity policy and action. But, to be effective, it is crucial that it consistently accounts for each driver of extinction.
Giordano Mancini +7 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 圆钢管桁架在主管内填筑混凝土,可有效提高其承载力。为了获得圆钢管混凝土桁架K形节点受力性能和承载力计算方法,研究了在受拉或受压支管处K形节点的失效模式和破坏机理;基于圆钢管混凝土K形节点在不同失效模式下的破坏机理和受力状态,分别对支管截面形式为圆形或矩(方)形的圆钢管混凝土K形节点建立合理的简化计算模型,推导出不同失效模式下K形节点极限承载力计算公式,并给出相应的极限承载力建议公式。试验验证了圆钢管混凝土K形节点的试验值与计算值吻合较好,研究表明圆钢管混凝土K形节点的极限承载力计算公式的准确性 ...
王静峰, 邓权, 邢文彬
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