Results 141 to 150 of about 167,960 (336)
传统风格建筑方形CFST-圆形RC截面混合柱侧移刚度及延性分析
Jianzhu Gangjiegou Jinzhan, 2019 通过4根传统风格建筑方钢管混凝土(concrete filled steel tube,CFST)-圆钢筋混凝土(reinforced concrete,RC)混合柱的低周往复加载试验,分析了传统风格建筑CFST-RC混合柱的破坏形态及侧向变形分布,根据CFST-RC混合柱的简化力学模型,给出了试件的弹性侧移刚度计算公式,计算结果与试验结果吻合较好。通过Abaqus有限元参数分析,得到了钢管屈服强度、混凝土强度、纵筋配筋率、上下柱线刚度比及轴压比对CFST-RC混合柱延性的影响规律。结果表明 ...
薛建阳, 马林林, 林建鹏
doaj
Unearthing the invisible: simulating maize root domestication through deep time
New Phytologist, EarlyView.
Peng Yu
wiley +1 more source
Stereochemical insights into sarpagan and akuammiline alkaloid biosynthesis
New Phytologist, Volume 247, Issue 3, Page 1335-1351, August 2025.Summary Sarpagan and akuammiline monoterpenoid indole alkaloids (MIAs) are a class of bioactive plant‐derived compounds with significant pharmaceutical potential. These alkaloids are formed through oxidative cyclization of geissoschizine, catalyzed by homologous cytochrome P450 monooxygenases (CYP) known as sarpagan bridge enzymes (SBEs) and rhazimal ...
Scott Galeung Alexander Mann +6 more
wiley +1 more source
, 2005 First edition of Æ Magazine which I founded, edited and contributed to.Published in Paris, France and distributed to 20 countries ...
openaire +1 more source
Mountain colonization precedes shifts away from bee pollination in Melastomataceae
New Phytologist, Volume 247, Issue 3, Page 1474-1492, August 2025.Summary Shifts among different groups of pollinators are central in the evolution of flowering plants, yet mechanisms underlying pollinator shifts remain unclear. Environment‐induced reduction in pollinator availability and hence efficiency may destabilize ancestral plant–pollinator interactions and trigger shifts to new, more efficient pollinators ...
Constantin Kopper +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2012 通过试验和理论对空、实心钢管再生混凝土柱的极限承载力做了研究,研究表明,实心钢管再生混凝土短柱可以采用实心钢管普通混凝土短柱的极限承载力计算公式。空心钢管再生混凝土长柱的承载力与再生混凝土弹性模量有关。火灾试验表明,钢管再生混凝土长柱的耐火性能要优于钢管普通混凝土,根据试验提出了钢管再生混凝土柱耐火时间的计算公式。
刘轶翔, 查晓雄
doaj
Diverging repeatomes in holoparasitic Hydnoraceae uncover a playground of genome evolution
New Phytologist, Volume 247, Issue 3, Page 1520-1537, August 2025.Summary The transition from an autotrophic to a heterotrophic lifestyle is associated with numerous genomic changes. These often involve large genomic alterations, potentially driven by repetitive DNAs. Despite their recognized role in shaping plant genomes, the contribution of repetitive DNAs to parasitic plant genome evolution remains largely ...
Woorin Kim +7 more
wiley +1 more source