Results 71 to 80 of about 65,290 (226)
Lagrangians for invariant sub-spaces of the squared Pauli-Lubanski vector
, 2003 We present an alternative formalism to the Rarita-Schwinger framework for the description of "has-been" higher spins at rest that avoids the Velo-Zwanziger problem.Comment: 3 pages, Contribution to the X Mexican School on Particles and Fields, 2002 ...
Cabral, G., Kirchbach, M.
core +1 more source
Journal of Evaluation in Clinical Practice, Volume 32, Issue 2, March 2026.ABSTRACT Rationale Globally, adverse events (AEs) are a major contributor to mortality, often arising from healthcare management rather than patients' underlying conditions. Aims and Objectives This study aimed to estimate the prevalence of AEs in three different hospitals in central‐north Mexico using the Institute for Healthcare Improvement Global ...
Luis Meave Gutierrez‐Mendoza +2 more
wiley +1 more source
Capacidad de dos especies vegetativas en la acumulación de metales pesados [PDF]
, 2018 Habitat fragmentation allows for vegetative species to be used as indicators of environmental pollution by heavy metals. Considering the distribution of Prosopis laevigata (mesquite) and Schinus molle (pepper tree) heavy metal concentrations were ...
Alcalá Jáuregui, Jorge +5 more
core +2 more sources
Spin and Resonant States in QCD [PDF]
, 2003 I make the case that the nucleon excitations do not exist as isolated higher spin states but are fully absorbed by (K/2,K/2)*[(1/2,0)+ (0,1/2)] multiplets taking their origin from the rotational and vibrational excitations of an underlying quark--diquark
Kirchbach, M.
core +5 more sources
Ovarian influence on circadian and infradian modulation of nicotine‐seeking in female mice
Journal of Neuroendocrinology, Volume 38, Issue 3, March 2026.Abstract Sex differences in tobacco intake are closely associated with hormonal fluctuations during the menstrual cycle in women. Elevated estrogen levels have been associated with increased stress, which may lead to a higher likelihood of seeking psychoactive substances.
Zenaida Rosas‐Ovando +9 more
wiley +1 more source
Jaguar Density at the Northeastern Limit of Its Distribution in Mexico
Ecology and Evolution, Volume 16, Issue 2, February 2026.This study presents the first estimate of jaguar density in northeastern Mexico using a spatial capture–recapture model with random thinning, which incorporates both identified and unidentified camera trap detections. Conducted over 91 days with 104 cameras, the model yielded a density of 1.29 individuals per 100 km2 in the El Cielo–Sierra de Tamalave ...
Zavdiel A. Manuel‐de la Rosa +6 more
wiley +1 more source
Investigación Bibliotecológica: Archivonomía, Bibliotecología e Información, 2011 Se exponen los primeros antecedentes históricos del derecho de autor en el ámbito internacional con orientación a su desarrollo y posterior tratamiento jurídico en México y en San Luis Potosí.It explains the historical early background of the "Author's ...
Agustín Gutiérrez García +1 more
doaj
How Mexican judicial reforms may have fueled crime: Arrest trends and trust erosion
Criminology &Public Policy, Volume 25, Issue 1, Page 89-112, February 2026.Abstract Background Mexico rolled out state‐led criminal justice reforms between 2000 and 2017 to modernize procedures and improve rule of law. Whether these changes reduced violent crime—especially in cartel‐affected areas—remains uncertain. Aims Estimate the impact of reform implementation on homicides and arrests, and assess mechanisms related to ...
Catalina Amuedo‐Dorantes +1 more
wiley +1 more source
Topics on heavy baryon chiral perturbation theory in the large N_c limit
, 2002 We compute nonanalytical pion-loop corrections to baryon masses in a combined expansion in chiral symmetry breaking and 1/N_c, where N_c is the number of colors.
Flores-Mendieta, Ruben
core +1 more source
MathematicsWhile convolutional neural networks (CNNs) excel at image classification, their generalization across domains and robustness to nonlinear degradation remain challenges in art media classification (AMC).
Juan M. Fortuna-Cervantes +5 more
doaj +1 more source