Results 51 to 60 of about 55,893 (261)

Digitizing collections to unlock the full potential of palynology: A case study with the Smithsonian palynology collection

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Large palynological collections have been built over decades and contain vital information. However, they are often difficult to access and use effectively. What is the point of having such collections if they are not fully utilizable? To solve this problem, we digitized the Smithsonian palynological collection using both light and confocal microscopy.
Carlos Jaramillo   +37 more
wiley   +1 more source

As espécies de Croton L. sect. Cyclostigma Griseb. e Croton L. sect. Luntia (Raf.) G. L. Webster subsect. Matourenses G. L. Webster (Euphorbiaceae s.s.) ocorrentes na Amazônia brasileira Species of Croton L. sect. Cyclostigma Griseb. and Croton L. sect. Luntia (Raf.) G. L. Webster subsect. Matourenses G. L. Webster (Euphorbiaceae s.s.) occuring within Brazilian Amazon

open access: yesActa Amazonica, 2010
Como parte de uma revisão taxonômica das espécies de Croton L. na Amazônia brasileira, estudou-se as seguintes espécies de Croton sect. Cyclostigma Griseb. e Croton sect. Luntia (Raf.) G. L. Webster subsect. Matourenses G. L.
Luiz Alberto Cavalcante Guimarães   +1 more
doaj   +1 more source

Effects of large-scale environment on the assembly history of central galaxies [PDF]

open access: yes, 2014
We examine whether large-scale environment affects the mass assembly history of their central galaxies. To facilitate this, we constructed dark matter halo merger trees from a cosmological N-body simulation and calculated the formation and evolution of ...
Jung, Intae   +2 more
core   +2 more sources

Nanoemulsions for Skin Delivery of Essential Oils: A Systematic Review

open access: yesPhytotherapy Research, EarlyView.
ABSTRACT Essential oils (EOs) are recognized for their multiple health benefits. However, their high volatility, low stability, and limited water solubility limit their effective application. This systematic review aims to assess the use of nanoemulsions as delivery systems for the topical administration of EOs, highlighting their efficacy, safety, and
Thais Leticia Moreira da Silva   +3 more
wiley   +1 more source

An improved preparation of phorbol from croton oil

open access: yesBeilstein Journal of Organic Chemistry, 2017
Background: Croton oil is the only commercial source of the diterpenoid phorbol (1a), the starting material for the semi-synthesis of various diesters extensively used in biomedical research to investigate cell function and to evaluate in vivo anti ...
Alberto Pagani   +4 more
doaj   +1 more source

Evaluate the efficiency of releasing two predatory species at their optimal temperature for controlling Tetranychus urticae (Acari: Tetranychidae) in a croton greenhouse

open access: yesPersian Journal of Acarology, 2023
Croton, Codiaeum variegatum L., is a beautiful tropical plant. The two-spotted spider mite, Tetranychus urticae Koch, causes economic damage to croton. The present study aimed to control T.
Dalia Adly
doaj   +1 more source

Modulation of DMBA- induced biochemical and histopathological changes by Syzygium cumini seed extract during skin carcinogenesis [PDF]

open access: yes, 2011
Aim & Method: The current study was designed to elucidate the protective effect of Syzygium cumini seed extract (SCE) on skin carcinogenesis induced by a single topical application of 7,12-dimethylbenz(a)anthracene (100 μg/100 μl of acetone) and 2 weeks ...
Jyoti Parmar , Priyanka Sharma , Preeti Verma , Priyanka Sharma , P.K.Goyal , Int J Cur Biomed Phar Res.
core  

Phylogeny and historical biogeography of the Pachira sensu lato clade (Bombacoideae, Malvaceae) with a new infrageneric classification

open access: yesTAXON, EarlyView.
Abstract We explore phylogenetic relationships within the Pachira sensu lato clade (Bombacoideae, Malvaceae), test the monophyly of the genera Eriotheca and Pachira, and investigate their biogeographic history. The Pachira s.l. clade comprises ca. 72 species that traditionally have been placed in Eriotheca and Pachira. We sampled ca. 79% of its species
Vania Nobuko Yoshikawa   +7 more
wiley   +1 more source

LoCuSS: Connecting the Dominance and Shape of Brightest Cluster Galaxies with the Assembly History of Massive Clusters [PDF]

open access: yes, 2010
We study the luminosity gap, dm12, between the first and second ranked galaxies in a sample of 59 massive galaxy clusters, using data from the Hale Telescope, HST, Chandra, and Spitzer. We find that the dm12 distribution, p(dm12), is a declining function
A. Dariush   +92 more
core   +2 more sources

Neglected Floral Visitors in the Galapagos Islands: Understanding the Structure of Ant‐Flower Interaction Networks

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT Ant‐flower interactions are prevalent in many ecosystems, yet their ecological significance remains poorly understood, particularly in isolated systems like the Galapagos Islands, where unique biotic assemblages create distinct interaction networks.
Alejandro Mieles   +2 more
wiley   +1 more source

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