Results 81 to 90 of about 45,637 (231)

Advancements in radiocarbon dating: An overview of its impact on Mexican archaeology

open access: yesArchaeometry, Volume 67, Issue S2, Page S82-S99, July 2025.
Abstract In this article, we provide a concise historical summary tracing the evolution of radiocarbon dating techniques in Mexico and Central America. We explore the contributions of early pioneers who first employed radiocarbon dating methods, leading to the establishment of a Mexican accelerator mass spectrometry laboratory. The study highlights its
Corina Solís   +3 more
wiley   +1 more source

Pedology and Plant Provenance Can Improve Species Distribution Predictions of Australian Native Flora: A Calibrated and Validated Modeling Exercise on 5033 Species

open access: yesEcology and Evolution, Volume 15, Issue 6, June 2025.
Climate dominates species distribution models. Deserts depend more on soil factors. Higher thresholds improve model accuracy. Integrated models outperform single‐variable ones. Temperate regions show highest species richness. ABSTRACT Species distribution models (SDMs) are valuable tools for assessing species' responses to environmental factors and ...
Farzin Shabani   +16 more
wiley   +1 more source

Enhancing Stability of Microwave‐Synthesized Cs2SnxTi1‐xBr6 Perovskite by Cation Mixing

open access: yesChemSusChem, Volume 18, Issue 9, May 5, 2025.
This research introduces a microwave radiation synthesis technique for synthesizing Cs2SnxTi1‐xBr6 lead‐free double perovskite powders. By incorporating Sn4+ cations, the stability of the material is improved, particularly at elevated temperatures and outside conditions.
Emmanuel Reyes‐Francis   +9 more
wiley   +1 more source

Effect of the Heat Affected Zone Hardness Reduction on the Tensile Properties of GMAW Press Hardening Automotive Steel

open access: yesMetals
An ultra-high-strength press-hardening steel (PHS) and a high-strength dual-phase steel (DP) were butt-joined by the gas metal arc welding (GMAW) process, aiming to assess the effects of a high heat input welding process on the structure-property ...
Alfredo E. Molina-Castillo   +6 more
doaj   +1 more source

Late Pleistocene–Holocene environmental fluctuations of southern Chihuahua Desert, Mexico

open access: yesJournal of Quaternary Science, Volume 40, Issue 4, Page 634-644, May 2025.
ABSTRACT Paleoenvironmental reconstructions from the Mexican Chihuahua Desert based on biological proxies are scarce, creating a gap in our understanding of the ecological responses to climate change in this water‐scarce region. Here, we present a paleoenvironmental reconstruction based on geochemical data and biological proxies such as ostracods and ...
C. M. Chávez‐Lara   +4 more
wiley   +1 more source

Paradojas de la migración internacional y el medio ambiente

open access: yesEconomía, Sociedad y Territorio, 2007
En el presente artículo se analiza la relación entre migración internacional y degradación ambiental, se estudia el caso de Zacatecas. Se identifican tres paradojas: a) factores como la degradación ecológica, la escasez de recursos naturales o la presión
RODOLFO GARCÍA-ZAMORA   +7 more
doaj   +1 more source

Resistencias a las dinámicas de violencia de pareja en Zacatecas

open access: yes, 2020
espanolEste estudio examina la prevalencia de la violencia de pareja y las estrategias de resistencia y busqueda de ayuda de las mujeres de Zacatecas. Se emplea una metodologia mixta con datos de la Encuesta Nacional sobre la Dinamica de las Relaciones ...
Martha M. López Ramos, Sonia M. Frías
semanticscholar   +1 more source

Sí se puede: The enduring legacy of Mexico on wine and politics

open access: yesPLANTS, PEOPLE, PLANET, Volume 7, Issue 3, Page 514-523, May 2025.
The cultural significance of the grapevine is undeniable. However, we fail to acknowledge how the grapevine has and continues to influence the most pressing political questions of our time. From the beginning of the Conquest, Indigenous peoples were forced to plant the vine, Spain burned the vines Miguel Hidalgo used to teach the poor, and César Chávez
Daniel H. Chitwood   +6 more
wiley   +1 more source

Diagnóstico de sostenimiento económico de adultos mayores en Zacatecas, México, como derecho humano fundamental

open access: yes, 2020
Older adults currently in Mexico represent 12.3% of the total population. The growth trend in this population group according to the National Institute of Statistics, Geography and Informatics, indicates that by 2050, the country will have between 25 and
R. Diez   +2 more
semanticscholar   +1 more source

Effect of Astragalus mollissimus on Ruminal Fermentation, Methane Production and Performance of Sheep

open access: yesVeterinary Medicine and Science, Volume 11, Issue 3, May 2025.
The effects of A. mollissimus (AM) supplementation on methane (CH4) production, volatile fatty acids, animal performance and nitro compound presence in blood were evaluated through two experiments. Results showed an CH4 reduction by up to 60%. No adverse effects on animal performance and no detectable nitro compound in plasma were reported.
Jagoba Rey‐Gotxi   +12 more
wiley   +1 more source

Home - About - Disclaimer - Privacy