Results 51 to 60 of about 2,747 (155)

Trust in Digital Repositories

open access: yesInternational Journal of Digital Curation, 2013
ISO 16363:2012, Space Data and Information Transfer Systems - Audit and Certification of Trustworthy Digital Repositories (ISO TRAC), outlines actions a repository can take to be considered trustworthy, but research examining whether the repository’s ...
Elizabeth Yakel   +3 more
doaj   +9 more sources

Cropping Systems and Climate Change in Humid Subtropical Environments

open access: yesAgronomy, 2018
In the future, climate change will challenge food security by threatening crop production. Humid subtropical regions play an important role in global food security, with crop rotations often including wheat (winter crop) and soybean and maize (summer ...
Ixchel M. Hernandez-Ochoa   +1 more
doaj   +1 more source

Control of glycogen content in retina: allosteric regulation of glycogen synthase. [PDF]

open access: yesPLoS ONE, 2012
Retinal tissue is exceptional because it shows a high level of energy metabolism. Glycogen content represents the only energy reserve in retina, but its levels are limited.
Ixchel Osorio-Paz   +2 more
doaj   +1 more source

“Dos modelos para evaluar los efectos de la cercanía de la luna sobre la frecuencia de nacimientos. Estudio en población mexicana”. [PDF]

open access: yes, 2014
Desde épocas antiguas la luna es relacionada con la fertilidad. Diversos estudios intentaron asociar al astro y la frecuencia de los nacimientos, sin obtener resultados concluyentes. En otras especies animales la influencia que ejerce este satélite es
Ramirez Duarte, Shelly Maricela   +1 more
core  

Destruction/reconstruction: preservation of archaeological and zoological research data [PDF]

open access: yes, 2015
Archaeology and zoology are fields in which data collection and analysis involve destruction. In this study we examine the results of 49 interviews with archaeologists and zoologists, focusing on researchers’ discussions of internal or disciplinary norms
Faniel, Ixchel M.   +2 more
core   +1 more source

Allopatric Divergence and Secondary Contact Within a Single River System in a Freshwater Fish Group

open access: yesFreshwater Biology, Volume 70, Issue 2, February 2025.
ABSTRACT Because riverine fishes can disperse along linear river corridors and even between tributaries, allopatric divergence within river systems is limited to large rivers. Within small rivers, such as island rivers, allopatric divergence rarely occurs, and no cases of secondary contact have been reported to date. Two congeneric riverine ricefishes,
Ilham V. Utama   +6 more
wiley   +1 more source

Root:shoot ratio of field crops under conventional and conservation tillage: A meta analysis

open access: yesSoil Use and Management, Volume 41, Issue 1, January‐March 2025.
Abstract Conventional tillage (CT) is a widely used agricultural practice aimed at loosening soil to enhance water infiltration and root growth. However, it can lead to environmental issues such as increased soil erosion and loss of nutrients and carbon.
Seyed Hamid Ahmadi   +9 more
wiley   +1 more source

Transnational Tortillas: Race, Gender, and Shop-Floor Politics in Mexico and the United States [PDF]

open access: yes, 2008
[Excerpt] In this book I seek to demonstrate the state\u27s central role in the labor process by looking at racialized and gendered aspects of state policies, especially in the U.S.-Mexico border region. In the era of global capitalism—marked by the rise
Munoz, Carolina Bank
core   +1 more source

Rúbrica de autoevaluación para promover la competencia argumentativa en foros de discusión en línea

open access: yesRevista Educación, 2013
El objetivo de esta investigación es determinar diferencias en los niveles de desempeño de la competencia argumentativa en foros de discusión a partir del uso de rúbricas por parte de los y las estudiantes inscritos en la materia en línea Sexualidad ...
Yunuen Ixchel Guzmán Cedillo
doaj  

Propuesta Técnica-Económica para el Lanzamiento de un Kit de Productos Químico Industrial para la limpieza del Hogar en la Empresa Aseos S.A, en el periodo comprendido de Agosto a Diciembre del Año 2015 [PDF]

open access: yes, 2015
Aseos S.A es una empresa que brinda servicios de limpieza a diferentes sectores; para esto utilizan equipos, mechas de lampazo, utensilios y productos químicos industriales los cuales son elaborados por ellos mismos, esto significa que aplican ...
Lumby Guerrero, Luz Marina   +1 more
core  

Home - About - Disclaimer - Privacy