Results 61 to 70 of about 97,829 (242)

Analysis of a Mathematical Model of Marital Satisfaction

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT A large number of marriages end in divorce. In this paper, we present a model for the emotional state of a couple based on bilinear ordinary differential equations. We study the effect of changes of each individual's self‐emotional state on the couple's state.
Benito Chen‐Charpentier   +2 more
wiley   +1 more source

“Logias masónicas en la Nueva España”

open access: yesREHMLAC, 2011
Este artículo busca mostrar que en la Nueva España hubo logias masónicas autorizadas por la Gran Logia del Estado de Louisiana para ser establecidas en Veracruz, Campeche y Mérida Yucatán entre 1816 y 1820. La evidencia documental se presenta por primera
Carlos Francisco Martínez Moreno
doaj  

Primer registro de un caso de loxoscelismo cutáneo ocasionado por mordedura de araña violinista (Loxosceles yucatana) en Yucatán, México

open access: yesRevista Peruana de Medicina Experimental y Salud Pública, 2022
El loxoscelismo es ocasionado cuando el veneno dermonecrótico producido por las arañas del género Loxosceles, conocidas como “arañas violinistas”, ingresa al organismo de una persona a través de su mordida. En México ocurre un subregistro de los casos de
Daly Martínez-Ortiz   +8 more
doaj   +1 more source

Caracterización química y cuantificación del rendimiento de extracción de pigmento en siete accesiones mexicanas de Bixa orellana [PDF]

open access: yes, 2016
Achiote (Bixa orellana) is a plant used for obtaining a natural dye rich on carotenoids (mainly bixin and norbixin); it is also the plant species with the highest content of tocotrienols in nature.
Asis, Ramón   +7 more
core  

Diffusion Of Indigo Molecules Inside The Palygorskite Clay Channels [PDF]

open access: yes, 2011
The search for durable dyes led several past civilizations to develop artificial pigments. Maya Blue (MB), manufactured in pre-Columbian Mesoamerica, is one of the best known examples of an organic-inorganic hybrid material.
Anne, Michel   +8 more
core   +4 more sources

Does Carbon Intensity Affect the Cost of Equity? An Empirical Study From Mexico

open access: yesSustainable Development, EarlyView.
ABSTRACT Climate change poses significant risks for companies, particularly in emerging countries like Mexico, where sustainability perceptions are evolving. This study analyzes how carbon emissions affect the cost of equity capital (CoE) for Mexican firms.
Guillermo Pérez‐Elizundia   +2 more
wiley   +1 more source

La confrontación por la abolición del estanco de aguardiente en Yucatán, 1781

open access: yesSecuencia, 2022
En Yucatán se estableció un estanco de aguardiente para apoyar el sostenimiento de los cuerpos militares. Se autorizó la destilación en toda la provincia, cuyo producto fue comercializado a través de puntos de venta distribuidos a lo largo de su ...
Gabriela Sofía González Mireles
doaj   +1 more source

Rapid evolution of chemosensory receptor genes in a pair of sibling species of orchid bees (Apidae: Euglossini). [PDF]

open access: yes, 2015
BackgroundInsects rely more on chemical signals (semiochemicals) than on any other sensory modality to find, identify, and choose mates. In most insects, pheromone production is typically regulated through biosynthetic pathways, whereas pheromone sensory
Brand, Philipp   +5 more
core   +3 more sources

New Record of Aedes albopictus In A Suburban Area Of Merida, Yucatan, Mexico.

open access: yesJournal of the American Mosquito Control Association, 2019
A survey was carried out in 51 households within a suburban area of Merida, Yucatan, Mexico, for 5 consecutive days. Adult collections were performed using Prokopack aspirators (indoors) and human-landing mosquito catches (HLC) outdoors, and larval sites
Y. Contreras-Perera   +6 more
semanticscholar   +1 more source

The predatory behavior of ants: an impressive panoply of morphological adaptations

open access: yesInsect Science, EarlyView.
This review focuses on predation in ants, showing the wide diversity of cases from solitary foraging to group hunting tactics, as well as the evolution of mandible shape frequently adapted to capture specific prey. Although most ants are generalist feeders, finding their sugary substances directly on plants or indirectly via sap‐sucking insects, some ...
Alain Dejean   +6 more
wiley   +1 more source

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