Results 51 to 60 of about 46,361 (266)
Strangers on the ladder of the party‐state: Women in teaching in Nationalist Taiwan, 1940s–1980s
Gender &History, EarlyView.Abstract As the ruling party of a party‐state in China and Taiwan, the Nationalist Party (Kuomintang/Guomindang) built a close relationship with the teaching profession. Many teachers joined the party and there was a well‐trodden pathway from teaching into local representative politics and civil service.
Joseph Lawson
wiley +1 more source
, 2023 Det har de siste årene skjedd flere store endringer i norske barnehager. Barnehager har gått fra å være et omsorgstilbud til å gå i retning av å være en læringsarena for barn. Omsorg står enda helt sentralt i barnehagen, samtidig som læring, danning og demokrati stadig får en større plass (Jansen, 2016, s. 23).
openaire +1 more source
Automated extraction of leaf mass per area from digitized herbarium specimens
New Phytologist, EarlyView.Summary The digitization of vast herbarium collections has made millions of plant specimen images freely available online, which can now be used to generate phenotypic datasets of unprecedented scope. Here, we assess the potential of computer vision tools to automate the extraction of predicted leaf mass per area (LMApred) from digitized herbarium ...
Thais Vasconcelos +4 more
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New Phytologist, EarlyView.Summary Herbarium specimens are widely distributed in space and time, thereby capturing diverse conditions. We reconstructed specimen ‘lived’ climate from knowledge of germination cues and collection dates for 14 annual species in the Streptanthus (s.l.) clade (Brassicaceae) to ask: which climate attributes best explain specimen phenological stage and ...
Megan Bontrager +6 more
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New Phytologist, EarlyView.Summary Evidence for the ongoing biodiversity crisis rests on assessment of a small fraction of described species, with major knowledge gaps for most organisms, including plants. Here, we highlight how digitised herbarium specimens can be used to accelerate and improve estimates of recent and ongoing plant extinctions.
Aelys M. Humphreys +4 more
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火灾下非均匀受火钢柱截面温度分布规律及其对钢柱抗火性能影响的研究现状
Jianzhu Gangjiegou Jinzhan, 2011 本文介绍了火灾下非均匀受火钢柱截面温度分布规律及其对钢柱抗火性能的研究进展和已有研究成果,包括钢柱截面非均匀温度分布产生的原因及截面温度非均匀分布对钢柱抗火性能的影响。钢柱截面不均匀温度产生的原因有:钢柱受到建筑填充墙保护,非4面受火;钢柱仅部分截面采用防火保护;受洞口非均匀火灾影响的建筑外框架柱;钢柱防火保护层不均匀或局部破损等。截面温度不均匀对钢柱抗火性能的影响包括:截面产生附加应力,使钢柱临界温度降低;钢柱截面不对称,发生弯扭破坏;钢柱产生热弯曲,以及破坏时可能出现的反向弯曲等 ...
潘锦旭, 张盛亚, 王培军
doaj
Longevity in plants impacts phylogenetic and population dynamics
New Phytologist, EarlyView.Summary Phylogenies of long‐lived plants often exhibit short molecular branch lengths and high levels of gene‐tree conflict. However, the biological mechanisms underlying these patterns remain unclear. We examine this with simulations and through empirical examination of several large seed plant clades.
Stephen A. Smith +9 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2013 脊柱骨折十分常见,约占全身骨折的5%-6%,其中胸腰段脊柱（T10-L2）处于两个生理弧度的交汇处,是应力集中之处,因此胸腰段脊柱骨折最多见。胸腰椎骨折是一种高能量损伤,常累及脊柱的三柱,不但造成脊柱的稳定性严重破坏,而且容易致脊髓神经损伤,其主要治疗目标是恢复脊柱的解剖结构和生理序列,重建其稳定性,挽救脊髓神经功能。胸腰椎骨折一般分为6种损伤类型:①单纯性楔形压缩性骨折;这是脊柱前柱损伤的结果。②稳定性爆破型骨折;这是脊柱前柱和中柱损伤的结果。③不稳定性爆破型骨折 ...
马帅 +4 more
doaj
New Phytologist, EarlyView.Summary Under a changing climate, it is imperative that we understand how species may respond to temperature impacts, which can differ among populations of the same species due to local drivers. Thermal tolerance data, which can be used to assess an organism's upper thermal limits, is valuable to identify species and/or populations' susceptibility to ...
Nicole Said +5 more
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Jianzhu Gangjiegou Jinzhan, 2019 通过对多层钢框架进行增量动力分析,研究柱脚转动刚度、底层破坏模式以及钢柱宽厚比对多层钢框架抗震性能的影响,具体从结构倒塌储备系数、地震易损性以及结构局部响应考察各影响因素对结构抗震性能的影响。分析结果表明,当破坏模式由钢柱破坏控制时,随着钢柱宽厚比的增大结构抗震性能减弱,考虑柱脚刚度的半刚接柱脚钢框架地震易损性与刚接柱脚钢框架差别较小,当柱脚与柱刚度比为2.0时,框架地震易损性与刚接柱脚钢框架非常接近;当破坏模式由柱脚破坏控制时,可以明显降低钢柱宽厚比的要求。
崔瑶, 刘浩, 王枫智, 山田哲
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