Results 51 to 60 of about 251,435 (358)

DNA metabarcoding reveals greater plant diversity than morphological seed analysis of bird feces

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Fruit‐eating birds drive seed dispersal in recovering tropical ecosystems, shaping forest regeneration. Molecular techniques, such as DNA metabarcoding, enable diet analysis from feces and can provide complementary frugivory data where dispersal is infrequent, as well as aid in seed identification in hyper‐diverse regions lacking ...
Carina I. Motta   +3 more
wiley   +1 more source

An Experiment in Scaling Impact: Assessing the Growth Capital Aggregation Pilot [PDF]

open access: yes, 2012
This report presents an assessment of the Growth Capital Aggregation Pilot. It was commissioned by the Edna McConnell Clark Foundation, founder and lead investor of the grantmaking initiative.Starting in 2000, The Edna McConnell Clark Foundation (Clark ...
Barbara E. Taylor, William P. Ryan
core  

High‐frequency and long‐term observations of eDNA from imperiled salmonids in a coastal stream: Temporal dynamics, relationships with environmental factors, and comparisons with conventional observations

open access: yesEnvironmental DNA, 2022
A greater understanding of eDNA behavior in the environment is needed before it can be employed for ecosystem monitoring applications. The objectives of this study were to use autonomous sampling to conduct long‐term, high‐frequency monitoring of the ...
Ryan T. Searcy   +10 more
doaj   +1 more source

A pH‐responsive charge‐reversal liposome with enhanced biofilm penetration for multimodal synergistic therapy of bacterial infections

open access: yesBMEMat, EarlyView.
This study develops a pH‐responsive, charge‐reversal liposome for treating bacterial biofilm infections. With enhanced penetration capability, the liposome effectively delivers antibacterial agents into biofilms. By integrating photodynamic and photothermal therapies with antibiotics, it significantly eradicates biofilms and accelerates bacteria ...
Ruyue Li   +9 more
wiley   +1 more source

Exploring the Antiproliferative Activity of Flavolignans From the Leaves of Casearia arborea (Salicaceae)

open access: yesChemistry &Biodiversity, EarlyView.
ABSTRACT The Casearia genus (Salicaceae) is well known as a source of natural antitumor prototypes, as described for clerodane diterpenes. In this way, the dichloromethane phase from leaves of Casearia arborea was phytochemically evaluated in liquid chromatography coupled to high‐resolution mass spectrometry, furnishing flavonoid, flavolignan, and ...
Augusto L. Santos   +7 more
wiley   +1 more source

Civic Engagement Programs and Youth Development: A Synthesis [PDF]

open access: yes, 2002
Focuses on the role that civic engagement plays in helping young people develop a broad array of strengths and capacities, including educational achievement, health and safety, social and emotional well-being, and self ...
Elizabeth C. Hair   +2 more
core   +1 more source

Isoform Specificity of a Compound Targeting Actin Filaments Containing Tropomyosin Tpm1.8/1.9

open access: yesCytoskeleton, EarlyView.
ABSTRACT The unbranched actin filaments in mammalian cells are usually composed of co‐polymers of a specific tropomyosin isoform with actin. Genetic manipulation has revealed that the tropomyosins largely define the functional properties of actin filaments in an isoform‐specific, non‐redundant manner.
Jeff Hook   +2 more
wiley   +1 more source

Identification of Bicarbonate as a Trigger and Genes Involved with Extracellular DNA Export in Mycobacterial Biofilms

open access: yesmBio, 2016
Extracellular DNA (eDNA) is an integral biofilm matrix component of numerous pathogens, including nontuberculous mycobacteria (NTM). Cell lysis is the source of eDNA in certain bacteria, but the source of eDNA remains unidentified for NTM, as well as for
Sasha J. Rose, Luiz E. Bermudez
doaj   +1 more source

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