Results 21 to 30 of about 38,142 (226)

Relaciones cuantitativas estructura-actividad/propiedad en dos dimensiones empleando el programa R

open access: yesEducación Química, 2019
  Las relaciones cuantitativas estructura-actividad (QSAR) y estructura-propiedad (QSPR) son modelos matemáticos aplicados a la predicción de actividades biológicas o propiedades de un grupo de compuestos.
Laura Dominguez Dueñas   +2 more
doaj   +1 more source

Controlling Antimicrobial Activity of Quinolones Using Visible/NIR Light-Activated BODIPY Photocages

open access: yesPharmaceutics, 2022
Controlling the activity of a pharmaceutical agent using light offers improved selectivity, reduction of adverse effects, and decreased environmental build-up. These benefits are especially attractive for antibiotics.
Elena Contreras-García   +6 more
doaj   +1 more source

Production of Poly(3-Hydroxybutyrate-Co-3-Hydroxyvalerate) by Bacillus megaterium LVN01 Using Biogas Digestate

open access: yesApplied Microbiology
The Bacillus megaterium LVN01 species native to Colombia has demonstrated the ability to metabolize different coproducts or industrial waste (such as fique juice, cane molasses, and residual glycerol) and accumulate polyhydroxybutyrate (PHB), giving it ...
Amanda Lucía Mora Martínez   +3 more
doaj   +1 more source

Descripción de una especie nueva del género Epicauta Dejean, 1834 de México y revisión del grupo de especies de Epicauta cupraeola (Coleoptera, Meloidae)

open access: yesGraellsia, 2013
Se describe una especie nueva, morfológicamente singular, del grupo de especies de Epicauta cupraeola de las zonas altas del Estado de Nayarit, México. La apariencia externa de Epicauta cora sp.
M. García-París, J. L. Ruiz
doaj   +1 more source

Lealtad o conveniencia. El caso de las coordinadoras (brokers) de una red clientelar en Tecámac, Estado de México

open access: yesRevista del Instituto Electoral del Estado de México. Apuntes Electorales, 2022
El propósito de esta investigación es analizar las razones por las que las coordinadoras, un grupo de mujeres que cumplen la función de brokers o intermediarias en una red clientelar en el municipio de Tecámac, Estado de México, han mantenido su ...
Rosalinda Castro, Aldo Muñoz Armenta
doaj   +1 more source

Multicenter (FX)n/NH3 Halogen Bonds (X = Cl, Br and n = 1–5). QTAIM Descriptors of the Strength of the X∙∙∙N Interaction

open access: yesMolecules, 2017
In the present work an in depth deep electronic study of multicenter XBs (FX)n/NH3 (X = Cl, Br and n = 1–5) is conducted. The ways in which X∙∙∙X lateral contacts affect the electrostatic or covalent nature of the X∙∙∙N interactions are explored at the ...
Gabriel J. Buralli   +4 more
doaj   +1 more source

Multi‐Scale Characterization of PLA Composites With Natural‐Based Reinforcements: From Filament to 3D‐Printed Parts

open access: yesPolymer Composites, EarlyView.
Thermal, microstructural, and mechanical characterization of 3D‐printed PLA composite parts. ABSTRACT To address plastic waste and agricultural residue underutilization, this study evaluates the thermal (DSC and FTIR), microstructural (SEM), and mechanical behavior of polylactic acid (PLA) reinforced with flax fibers and olive pit particles, processed ...
P. N. B. Reis   +6 more
wiley   +1 more source

Conservation implications of low contemporary connectivity along the Mid‐Atlantic Ridge in hydrothermal vent gastropods

open access: yesConservation Biology, EarlyView.
Abstract Polymetallic sulfide deposits produced at hydrothermal vent fields are targets for mining exploitation along the Mid‐Atlantic Ridge, threatening the functioning and resilience of vent ecosystems that provide multiple ecosystem services. Knowledge about connectivity between vents will inform conservation practices.
E. Portanier   +10 more
wiley   +1 more source

High Densities of Large Herbivores Rapidly Disrupt Ecosystem Integrity

open access: yesGlobal Change Biology, Volume 32, Issue 6, June 2026.
Human‐driven increases in large herbivore populations are emerging as a widespread global change pressure on terrestrial ecosystems. Using the largest hectare‐scale herbivore density manipulation experiment conducted to date, we show that high deer densities rapidly disrupt ecosystem integrity across multiple dimensions of biodiversity and ecosystem ...
Jorge Isla   +38 more
wiley   +1 more source

ESTRUCTURA DE PROPIEDAD DE LAS FIRMAS Y GRUPOS ECONÓMICOS El caso Chileno

open access: yesCuadernos de difusión, 1993
It analyzes the ownership structure of Chilean firms and the effect that conglomerates or economic groups produce on this structure. The central hypothesis is that the ownership structure of firms owned or controlled by economic groups is not significantly different from the ownership structure of any other firm.
Paredes M., Ricardo, Flor R., Lincoln
openaire   +2 more sources

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