Results 51 to 60 of about 2,851,649 (388)

CALIDAD DEL AGUA EN POZOS DE ISLA COZUMEL, MÉXICO

open access: yesTropical and Subtropical Agroecosystems, 2011
Se analizaron in situ y en el laboratorio, variables físicas y químicas informativas de la calidad de agua subterránea de 14 pozos ubicados en el área de mayor uso de agua dulce de la isla Cozumel, Quintana Roo, México durante un ciclo anual (noviembre 2007 a octubre 2008).
Luz de Lourdes Aurora Coronado Alvarez   +2 more
openaire   +1 more source

Implementación de Estrategias de Marketing en Tiendas de Abarrotes para Hacer Frente al COVID-19 en Guerrero, México

open access: yesEuropean Scientific Journal, ESJ, 2021
En México existen unidades económicas importantes de impacto local que se encargan de comercializar y proveer a manera de pequeñas tiendas, algunos artículos y productos indispensables para el consumo y servicios en los hogares mexicanos principalmente, estas son las conocidas “Tiendas de Abarrotes” o “Tienditas de la Esquina”, mismas que ...
María del Socorro Cabreara Ríos   +2 more
openaire   +2 more sources

Empirical distributions of galactic $\lambda$ spin parameters from the SDSS

open access: yes, 2006
Using simple dimensional arguments for both spiral and elliptical galaxies, we present formulas to derive an estimate of the halo spin parameter $\lambda$ for any real galaxy, in terms of common observational parameters. This allows a rough estimate of $\
B. Cervantes-sodi   +4 more
core   +2 more sources

Spin‐Selective Anisotropic Magnetoresistance Driven by Chirality in DNA

open access: yesAdvanced Functional Materials, EarlyView.
It is shown that magnetoresistance (MR) measurements carried out as a function of angular dependence between the magnetic field and a chiral (DNA) interface provide a valuable new insight into the charge transport mechanism associated with the chiral‐induced spin selectivity (CISS) effect.
Tapan Kumar Das   +4 more
wiley   +1 more source

Convenio entre los Estados Unidos Mexicanos y el Japón, sobre pesca por embar­caciones japonesas en las aguas contiguas al mar territorial mexicano

open access: yesRevista Mexicana de Ciencias Políticas y Sociales, 2022
Convenio entre los Estados Unidos Mexicanos y el Japón, sobre pesca por embar­caciones japonesas en las aguas contiguas al mar territorial mexicano
Gobiernos de México y Japón
doaj  

GENOTYPE-ENVIRONMENT INTERACTION TO THE YIELD STABILITY IN WHEAT IN MEXICALI, B.C., MÉXICO REGION

open access: yesTropical and Subtropical Agroecosystems, 2011
 With the finality to evaluate yield stability of varieties of wheat Cachanilla F-2000 (C), Yécora F-70 (Y) and Triguenio F-00 (TR), in El Valle de Mexicali, Baja California, under four environments of test, using the using the additive main effects and multiplicative interaction model (AMMI), was developed trials during the period from 2007 to 2008,
Edgar Omar Rueda Puente   +5 more
openaire   +1 more source

El Centro Urbano Presidente Alemán: un caso de apropiación de vivienda colectiva de mediados del s.XX en la Ciudad de México [PDF]

open access: yes, 2007
El trabajo que aquí se presenta pretende estudiar un caso de vivienda colectiva analizando la arquitectura a partir de las prefiguraciones y refiguraciones a fin de observar las concordancias y definir los significados que el habitante proporciona a ...
México, Reyes Meza, Arais
core   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

open access: yesAdvanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan   +9 more
wiley   +1 more source

CHARACTERIZATION OF TOMATO (Lycopersicum esculentum Mill.) CROPPING SYSTEM IN THE STATE OF JALISCO, MÉXICO

open access: yesTropical and Subtropical Agroecosystems, 2011
Cropping systems of tomatoes in the State of Jalisco, Mexico, were characterized variables useful to explain the technical and economic problems of these systems were prioritized. Five producing regions were identified: Sayula, La Cienega, Sierra de Amula, Costa Sur, and Zapotlan El Grande.
Imelda Rosana Cih Dzul   +3 more
openaire   +1 more source

Microplate Active Migration Emerging From Light‐Induced Phase Transitions in a Nematic Liquid Crystal

open access: yesAdvanced Functional Materials, EarlyView.
A quasi‐2D, light‐absorbing platelet embedded in a thermotropic nematic liquid crystal is activated with light irradiation. Depending on the light intensity, the platelet induces a localized nematic‐isotropic phase transition that triggers the motion. Using different confinements, the platelet can glide in a 2D regime or tilt and glide in a 3D regime ...
Antonio Tavera‐Vázquez   +6 more
wiley   +1 more source

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