Results 81 to 90 of about 10,450 (247)

Impact of ultraviolet radiation‐induced damage to hair fiber integrity: A multi‐technique physicochemical characterization of surface and cortex properties

open access: yesInternational Journal of Cosmetic Science, EarlyView.
UV exposure induces cuticular and cortical damage in natural hair, with oxidative effects and protein degradation comparable to bleaching. However, double bleaching leads to significantly greater structural degradation, emphasizing distinct mechanisms and severity of chemical versus UV‐induced damage. Abstract The combination of chemist techniques is a
Nathana Cindy Barros Silva Ramos   +7 more
wiley   +1 more source

INFORMALIDAD LABORAL DE JÓVENES EN RIESGO DE EXCLUSIÓN EN MICROEMPRESAS DEL SECTOR COMERCIAL DE LA CIUDAD DE DURANGO

open access: yesVértice Universitario
María Luisa González Marín nos proporciona el marco de referencia para analizar la informalidad de la microempresa, por un lado nos permite señalar el sentido de la informalidad en tanto que en el área laboral, se le identifica con las actividades que ...
Hortensia Hernández Vela   +1 more
doaj  

Los niños y niñas un grupo vulnerable en México

open access: yesRevista sobre la infancia y la adolescencia, 2014
[EN] One of the great problems that at the moment are debate is the vulnerability of the mexican childhood, thats because they are part of a group, when being in a process of formation and development, it maintains a relation of greater dependency with other people, what implies frequents violations of its rights, little visible in ...
Jaimes Fonseca, Adriana   +1 more
openaire   +4 more sources

Integrative taxonomy reveals four new species of the armoured catfish genus Pareiorhina (Siluriformes: Loricariidae) from the upper Paraná River basin, Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract Four new species of the small‐sized armoured catfish genus Pareiorhina are described from mountain ranges in the Grande River drainage, upper Paraná River basin, based on morphological and molecular species delimitation methods. Molecular analyses based on the cytochrome oxidase subunit I (COI) marker recovered Pareiorhina as polyphyletic ...
Pedro L. C. Uzeda   +6 more
wiley   +1 more source

Ejidos y comunidades agrarias. Reconocimiento legal y real como grupos vulnerables

open access: yesBiolex
El presente trabajo examina la naturaleza del derecho agrario mexicano y la situación jurídica de sus sujetos fundamentales, con especial atención a los ejidos, las comunidades agrarias y sus integrantes, a fin de determinar si pueden ser considerados ...
Oscar Francisco Becerril Calderón   +1 more
doaj   +1 more source

Las pensiones no contributivas como instrumento de protección de grupos vumnerables: la carencia de rentas y la compatibilidad con otras prestaciones

open access: yes, 2012
Este trabajo trata de abordar la materia de las prestaciones no contributivas, en especial las pensiones no contributivas, incidiendo en los aspectos de la carencia de rentas y de la compatibilidad, en mayor o menor grado, con otros tipos de ayudas de ...
Suárez Martínez, José
core  

Psychological and Cognitive Sequelae of COVID‐19: Systematic Review and Meta‐Analysis

open access: yesJournal of Psychiatric and Mental Health Nursing, EarlyView.
ABSTRACT Introduction COVID‐19 pandemic has exacerbated global mental health problems with the development of persistent symptoms. Aim To conduct a prevalence meta‐analysis of persistent psychological and cognitive sequelae of COVID‐19 based on cohort studies. Method This study followed PRISMA.
Eduarda Boufleuer   +6 more
wiley   +1 more source

Weaponizing Kinship: A Demographic Analysis of Bereavement in the Colombian Conflict

open access: yesPopulation and Development Review, EarlyView.
Abstract The ongoing Colombian armed conflict has produced widespread homicides and enforced disappearances, as armed actors used violence to terrorize communities and consolidate power. Family bereavement—one of the most pervasive and enduring consequences of this violence—remains critically understudied from a quantitative perspective.
Enrique Acosta   +3 more
wiley   +1 more source

Grupos vulnerables y su caracterización como criterio de discriminación de la seguridad alimentaria y nutricional en Brasil Vulnerable groups and their characterization like a discrimination criterion of food and nutritional security in Brazil

open access: yesRevista Brasileira de Saúde Materno Infantil, 2005
Los grupos más expuestos a la Inseguridad Alimentaria y Nutricional son los que figuran en cualquier lista de "desposeídos". Las familias más afectadas son aquellas más vulnerables a la degradación del medio ambiente, que viven en malas condiciones ...
Dixis Figueroa Pedraza
doaj   +1 more source

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