Results 61 to 70 of about 635,805 (293)
Tropical and Subtropical Agroecosystems, 2012 <p>The objective of this research was to characterize the pattern of spatial structure of a <em>Pinus hartwegii</em> forest in the Sierra Madre Oriental, affected by a fire in 1998. Sampling was stratified by fire severity. Three fire severity classes were defined based on the degree of crown consumption (low, medium and high).
Diana Yemilet Avila Flores +5 more
openaire +1 more source
Advanced Materials Technologies, EarlyView.A broadband terahertz polarization rotator consisting of twistingly stacked silicon–air metagratings is designed based on the polarization guiding effect and experimentally shown to achieve 90° linear polarization rotation for both TE and TM incidences.
Yun‐Seok Choi +4 more
wiley +1 more source
LOS AGROECOSISTEMAS TRADICIONALES EN LA PRODUCCIÓN DE FORRAJE EN EL SUROESTE DE TLAXCALA, MÉXICO
Tropical and Subtropical Agroecosystems, 2010 Se describe cómo los productores agropecuarios del suroeste del estado de Tlaxcala, México mediante un conocimiento ancestral de su ecosistema, han podido adaptar los recursos de que disponen a las condiciones cambiantes de los albores del siglo XXI.
Benito Ramirez Valverde +3 more
openaire +1 more source
Multipolar Resonances in Electro‐Optic Metasurfaces with Moderate Refractive Index
Advanced Photonics Research, EarlyView.Electro‐optic nanoantennas with moderate refractive indices of 2.3 to 3.0 are numerically shown to sustain strong multipolar resonances, enabling efficient light confinement and EO tuning. Multipolar modes of even parity are most sensitive to variations in the refractive index.
Viktoriia E. Babicheva +1 more
wiley +1 more source
Tropical and Subtropical Agroecosystems, 2012 Los antihelmÃnticos formulados con ivermectina, se utilizan en los sistemas ganaderos de México. Sin embargo no se ha determinado su efecto sobre la abundancia, disposición espacio-temporal de los escarabajos coprófagos. Para estimar estos efectos, se realizaron colectas mensuales de julio del 2008 a junio del 2009, en un pastizal del centro de ...
Carolina Flota-Bañuelos +5 more
openaire +1 more source
Organic Light‐Emitting Diode in Phototherapy Applications
Advanced Photonics Research, EarlyView.This article systematically reviews the development of organic light‐emitting diodes (OLEDs) in phototherapy, constructs a technical framework, and establishes a multidimensional knowledge graph encompassing indications, wavelengths, and light intensity.
Yingguang Zhu +9 more
wiley +1 more source
Issues in Science and Technology Librarianship, 1992 Five of the largest technical and educational libraries in New Mexico signed an agreement on January 27, 1992, pledging to share their resources.
New Mexico From Kirtland Air Force Base
doaj +1 more source
Tropical and Subtropical Agroecosystems, 2011 El objetivo del trabajo fue obtener Ãndices de fragilidad del paisaje  (IFP) como una forma de proporcionar datos confiables para el uso sostenible del suelo en la Cuenca Coatepec- La Antigua, Veracruz, México. Se incorporó un transecto altitudinal de colecta de datos de paisaje, desde los 3200 m en la cara oriental del cofre de Perote, hasta el ...
Ana Lid Del Angel-Pérez +3 more
openaire +1 more source
HONGOS MICORRIZÓGENOS ARBUSCULARES ASOCIADOS A LA VEGETACIÓN COSTERA EN CHUBURNÁ, YUCATÁN, MÉXICO
Tropical and Subtropical Agroecosystems, 2013 <p>Plant species that successfully establish in environments of recent formation, such as barrier islands, exhibit life history traits that allow them to efficiently capture nutrients and water, such ability may be largely due to interactions these plants establish with mutualistic arbuscular mycorrhizal fungi (AMF).
Patricia Guadarrama +4 more
openaire +2 more sources