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Unpacking value destruction at the intersection between public and private value
Public Administration, Volume 101, Issue 4, Page 1207-1226, December 2023., 2023 Abstract Public services do not always create value. Rather, when poorly organized and/or delivered, they can destroy value and make service users' lives worse. However, such “value destruction” is presently weakly conceptualized in public management theory. Consequently, this paper is devoted to the empirical examination of value destruction and hence
Tie Cui, Stephen P. Osborne
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Journal of Traumatic Stress, Volume 35, Issue 3, Page 955-966, June 2022., 2022 Abstract Gulf War veterans (GWVs) were exposed to neurotoxicants, including sarin nerve gas, anti–nerve agent pills, pesticides, oil well fires, and fumes from unvented tent heaters, all of which have been associated with subsequent adverse health.
Clara G. Zundel +6 more
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Jianzhu Gangjiegou Jinzhan, 2022 尽管建筑领域的火灾安全性能化设计理念已经提出近四十年，不少学者针对这一研究热点也做了大量工作，但是由于缺乏完善的理论基础，以及在实际工程设计中的可操作性等问题，其应用仍然受到很大的限制。目前，中国、英国、美国、澳大利亚、新西兰、加拿大等国家以及多个国际组织的建筑结构火灾安全设计规范开始由“处方式”向“性能化”发展，为研究工作提供了新的思路和要求。基于世界上主要的国际和国家标准，整理了有关火灾安全性能化设计方法的规范条例及内容，提出了建筑结构性能化抗火设计中的几个关键问题。为解决这几个关键问题 ...
华莹, 赵金城
doaj
Jianzhu Gangjiegou Jinzhan, 2022 为评估钢框架结构在火灾下抗震性能的损伤程度，提出基于钢材力学性能折减和基准刚度法的钢框架结构火灾损伤评估方法。对火灾不同温度工况下的钢框架构件进行损伤敏感度分析，研究不同温度工况与钢框架梁、柱的损伤关系；在不同楼层火灾下识别损伤结构模态参数，以损伤前的楼层层间刚度为基准，揭示钢框架结构不同楼层、梁柱构件、中跨和边跨火灾损伤对楼层损伤的影响规律；最终获得楼层损伤与整体结构损伤的关系，建立钢框架结构火灾下抗震性能损伤演化模型。研究成果可为建立不同温度工况下钢框架结构抗震性能的损伤模型提供理论基础 ...
李宁, 刘纪陆, 赵崛
doaj
Jianzhu Gangjiegou Jinzhan, 2023 为提升内填充轻钢复合墙体的抗火性能，开展了两片双层石膏板覆面岩棉内填充非承重轻钢复合墙体抗火试验研究，探究不同填充层布置对墙体抗火性能的影响。结果表明：相较于空腔全填充墙体，龙骨无填充墙体受火过程中热翼缘温升更慢、冷热翼缘温差更小，龙骨无填充墙体的承重抗火性能优于空腔全填充墙体。同时，在0.27荷载比率条件下，龙骨无填充墙体的耐火极限相较于空腔全填充墙体提升11.5%左右，龙骨无填充墙体施工比空腔全填充墙体更为简便。因此，可以考虑采用墙柱无填充的构造形式来代替内填充构造以提升该类墙体承重抗火性能。此外 ...
金仁超, 高亮, 刘康, 陈伟
doaj
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Pyritum can eliminate blood stasis and promote the healing of muscles and bones, which has been used as a traditional mineral medicine in China for thousands of years. However, the mechanisms of action and processing methods of Pyritum were not illustrated.
Mingxia Li +8 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The demand for advanced aerospace components necessitates near‐α titanium alloys with enhanced high‐temperature performance and compatibility with additive manufacturing (AM). To address this, an in situ alloying strategy was employed to co‐modify a Ti‐6.5Al‐2Zr‐Mo‐V alloy with Si and Y during laser powder bed fusion.
Zishuo Ma +10 more
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Jianzhu Gangjiegou Jinzhan, 2021 钢材高温蠕变是钢材在高温和应力作用下的塑性应变。高温蠕变会导致钢柱变形增大,耐火极限降低。为了考察高温蠕变对冷弯薄壁型钢柱抗火性能的影响程度,建立了考虑高温蠕变的抗火分析有限元模型,通过试验结果对有限元模型进行验证。利用模型研究了在不同荷载比、轴向约束刚度比、升温速率和火灾场景下,高温蠕变对冷弯薄壁型钢柱抗火性能的影响。研究表明,在有限元模型中考虑蠕变因素后,对于钢柱抗火性能的预测更为准确,更符合真实情况;在中等升温速率的火灾场景中,荷载比为0 ...
杨竞杰, 王卫永
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song +4 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Interface polarization enhancement and impedance matching optimization are the keys to improving the comprehensive performance of microwave absorbing materials (MAMs). Herein, a green synthesis strategy integrating sacrificial template self‐etching, hydrothermal reaction, and annealing treatment is proposed to successfully fabricate urchin ...
Zhenzhen Tian +8 more
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