Results 31 to 40 of about 46,361 (266)
Jianzhu Gangjiegou Jinzhan, 2006 确定了高温下组成钢骨混凝土的钢材和混凝土的热工参数和力-热本构关系模型,利用有限元法计算了钢骨混凝土柱截面温度场,计算结果得到实验结果的验证。利用数值方法对钢骨混凝土柱耐火极限及火灾下荷载-变形关系曲线进行了计算分析,理论计算结果和实验结果吻合良好。在此基础上,分析了截面尺寸、构件长细比、截面含钢率、截面配筋率、荷载偏心率、钢骨和钢筋屈服强度、混凝土强度、截面高宽比等参数对耐火极限以及火灾下构件承载力的影响规律。最后,提出了钢骨混凝土柱耐火极限的实用计算公式。本文是第二部分。
郑永乾, 韩林海
doaj
Methodologies for investigating and fostering plant awareness
PLANTS, PEOPLE, PLANET, EarlyView.Plant awareness research suffers from disparate methodologies and an overreliance on self‐reported items, limiting its development. The collection addresses these gaps by highlighting diverse methodologies, including psychology, ethnobotany, arts‐based research, and educational sciences.
Dawn Sanders, Peter Pany, Bethan Stagg
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2006 确定了高温下组成钢骨混凝土的钢材和混凝土的热工参数和力-热本构关系模型,利用有限元法计算了钢骨混凝土柱截面温度场,计算结果得到实验结果的验证。利用数值方法对钢骨混凝土柱耐火极限及火灾下荷载-变形关系曲线进行了计算分析,理论计算结果和实验结果吻合良好。在此基础上,分析了截面尺寸、构件长细比、截面含钢率、截面配筋率、荷载偏心率、钢骨和钢筋屈服强度、混凝土强度、截面高宽比等参数对耐火极限以及火灾下构件承载力的影响规律。最后,提出了钢骨混凝土柱耐火极限的实用计算公式。本文是第一部分。
郑永乾, 韩林海
doaj
PLANTS, PEOPLE, PLANET, EarlyView.Iron deficiency anaemia remains a major public health challenge in Sub‐Saharan Africa, where population growth, displacement and limited resources heighten nutritional insecurity. We compiled a list of indigenous African underutilized wild food plants and examined their potential for addressing micronutrient deficiencies.
Eltayb Abdellatef +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2006 本文介绍了马鞍山钢铁公司开发的耐火钢钢柱抗火试验。其中,一根为轴压试验;另一根为偏压试验。将试验结果与ANSYS有限元软件模拟计算结果进行了对比,最后采用简化实用公式对试验结果进行了验算。
李国强 +5 more
doaj
The Cinderella tree, Quillaja saponaria – A soap story
PLANTS, PEOPLE, PLANET, EarlyView.Our current understanding of plants has been shaped by the entwining of different cultures. The Chilean soapbark tree, traditionally valued as a source of natural soap, was shown by serendipitous research in France in the 1900s to produce compounds that can boost the immune response to vaccines.
Anne Osbourn
wiley +1 more source
中西医结合护理Objective To investigate the effect of remote monitoring and combined network platforms in the management of patients with pulmonary dysfunction in in the Department of Spinal Surgery.
HUANG Xiaoyan (黄晓妍) +1 more
doaj +1 more source
Genomic structure and ex situ conservation of the North American grapevine Vitis labrusca
PLANTS, PEOPLE, PLANET, EarlyView.The North American wild grapevine species Vitis labrusca is an important source of disease resistance and climate resilience traits for breeding new grapevine cultivars. To ensure its continued use in breeding, V. labrusca must be accurately identified and genetically diverse material must be conserved.
Zoë Migicovsky +18 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.The use of wild edible plants and the traditional knowledge associated with them are rapidly disappearing across the Mediterranean, with serious consequences for biodiversity, cultural heritage, and regional food security. This study compiles and organizes fragmented information to create the first comprehensive catalogue of these plants across the ...
Benedetta Gori +5 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Reusing organic waste materials, such as animal manure, as soil amendments reduces water and fertiliser demand, contributing to achieving the Sustainable Development Goals. However, organic wastes may contain contaminants of emerging concern (CECs), posing potential ecosystem and human health risks. Despite the importance of this issue, there is a lack
Felicity C. T. Elder +7 more
wiley +1 more source