نتایج جستجو برای: dryopteris expansa

تعداد نتایج: 567  

2009
Paul Garrett

The discrete decomposition with finite multiplicities of square-integrable cuspforms, and concommitant estimates, are foundational. Lie-group and symmetric-space versions of these results were known [Selberg 1956], [Gelfand-Fomin 1952] in the mid 1950’s. The general assertion was made in [GelfandGraev 1962] and [Gelfand-PS 1963], the latter observing that an adelic formulation can proceed in th...

Journal: :Molecules 2014
Dan-Dan Zhao Qin-Shi Zhao Li Liu Zhong-Qin Chen Wei-Min Zeng Hong Lei Yan-Long Zhang

One new coumarin, dryofracoumarin A (1), and eight known compounds 2-9 were isolated from Dryopteris fragrans (L.) Schott. Their structures were established on the basis of extensive spectroscopic data analyses and comparison with reported spectroscopic data. The new compound 1 was determined to be 8-hydroxyl-4-isopropyl-7-methyl-6-methyl-2H-benzopyran-2-one. Two dimers, trans- and cis-3-(3,4-d...

Journal: :American journal of botany 2009
Ares Jiménez Luis G Quintanilla Santiago Pajarón Emilia Pangua

Studies on genetic diversity help us to unveil the evolutionary processes of species and populations and can explain several traits of diploid-polyploid complexes such as their distributions, their breeding systems, and the origin of polyploids. We examined the allozyme variation of Dryopteris aemula and D. oreades, diploid ferns with highly fragmented habitats, and the allotetraploid D. corley...

Journal: :Repertorium novarum specierum regni vegetabilis 1917

Journal: :Molecules 2017
Zheng-Chang Zhong Dan-Dan Zhao Zhen-Dong Liu Shuai Jiang Yan-Long Zhang

The global burden of cancer continues to increase largely with the aging and growth of the world population. The purpose of the present work was to find new anticancer molecules from a natural source. We utilized chromatographic methods to isolate compounds from medicinal plant Dryopteris fragrans (L.) Schott. The structure of the new compounds was determined by spectroscopic and spectrometric ...

Journal: :Molecules 2018
Zhen-Dong Liu Dan-Dan Zhao Shuai Jiang Bei Xue Yan-Long Zhang Xiu-Feng Yan

Cancer is one of the most major diseases that threatens human health and life. The aim of this work was to obtain novel anticancer molecules from D. fragrans, a kind of medicinal plant. The structure of the new compound was identified using spectroscopic data (¹H-NMR, 13C-NMR and two dimensions NMR). Its anticancer properties were evaluated using the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-...

2011
Paula Benevides de Morais Denise Rodrigues de Souza Francisca Maria Pinheiro de Sousa Kleverson Wessel de Oliveira Raphael Sanzio Pimenta

Shigella flexnerii and Escherichia coli were the most frequent Gram-negative bacteria found in the mouth cavity and cloacae of the turtles Podocnemis expansa and P. unifilis on beaches in the National Park of Araguaia, Brazil. Reptiles are known as Salmonella carriers, despite rarely isolated in these turtles.

2004
NICOLE VALENZUELA DEAN C. ADAMS RACHEL M. BOWDEN AMELIA C. GAUGER

Identifying sex of hatchling turtles is difficult because juveniles are not obviously externally dimorphic, and current techniques to identify sex are often logistically unfeasible for field studies. We demonstrate a widely applicable and inexpensive alternative to detect subtle but significant sexual dimorphism in hatchlings, using landmark-based geometric morphometric methods. With this appro...

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