Results 131 to 140 of about 46,361 (266)

The frequency and importance of polyploidy in tropical rainforest tree radiations

open access: yesNew Phytologist, Volume 249, Issue 4, Page 2103-2114, February 2026.
Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Rowan J. Schley   +9 more
wiley   +1 more source

MOA中MOV柱的温度分布研究 附视频

open access: yesDianci bileiqi, 1994
介绍了MOV柱热路计算图,计算研究了MOV柱的温度分布;并叙述了MOV柱温度测量方法,试验研究了MOV柱的温度分布。结果表明;计算与实测结果十分吻合。文中研究的MOV柱热路图及测试方法可用于分析任何结构形式的MOA温度分布;指出了MOV柱温度是大值在靠近柱的上端部以及改善MOV柱温度分布的结构措施,强调指出屏蔽措施不仅能使电场均匀化,而且能使热场(温度分布)均匀化,本研究对MOA热设计具有参考意义。
doaj  

潮湿环境下支柱绝缘子聚氨酯芯体的吸湿吸水特性研究

open access: green, 2022
刘世增   +6 more
openalex   +1 more source

Nitrogen fertilization reduces the standing biomass, abundance, and size of Cenococcum sclerotia: a ubiquitous but rarely quantified ectomycorrhizal soil carbon pool

open access: yesNew Phytologist, Volume 249, Issue 4, Page 1709-1715, February 2026.
Summary Unlike most ectomycorrhizal (EM) fungi, Cenococcum geophilum is a prolific producer of sclerotia, which represent a large and persistent, yet rarely quantified pool of EM fungal biomass and carbon in soils. How biomass of these asexual propagules is impacted by global change factors, such as anthropogenic nitrogen (N) deposition, remains ...
Christopher W. Fernandez   +1 more
wiley   +1 more source

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