Results 31 to 40 of about 3,240,319 (85)

Robust Amide‐Linked Fluorinated Covalent Organic Framework for Long‐Term Oxygen Reduction Reaction Electrocatalysis

open access: yesSmall, Volume 20, Issue 38, September 19, 2024.
In this work, the post‐synthetic modification of the linkage of a covalent organic framework used as a catalyst is reported for the electrogeneration of hydrogen peroxide. This conversion from imine to amide enhances the robustness of the framework as well as its activity and overall performance as an electrocatalyst. Abstract The high energy demand of
Miguel Jiménez‐Duro   +5 more
wiley   +1 more source

Early Colonial Diet in El Japón, Xochimilco, Mexico: Examining dietary continuity through stable isotope analysis of bone collagen and bioapatite

open access: yesAmerican Journal of Biological Anthropology, Volume 184, Issue 3, July 2024.
Location of the Colonial period site of El Japón (San Gregorio Atlapulco, Mexico City). Abstract Objectives Early colonial documents from central Mesoamerica detail raising and planting of European livestock and crops alongside native ones. The extent to which Indigenous people, especially of the rural commoner class, consumed newly introduced foods is
Edgar Alarcón Tinajero   +3 more
wiley   +1 more source

Aportes al análisis del abandono y la permanencia estudiantil en las universidades públicas argentinas [PDF]

open access: yes, 2011
En el presente trabajo presentamos a la comunidad académica una parte de nuestras investigaciones en relación a las problemáticas de la permanencia y el abandono estudiantil universitario de instituciones públicas en la Argentina.
Foutel, Mariana   +2 more
core  

Diseño curricular del programa de música con enfoque transdisciplinario y conceptual para la sección básica elemental en el Colegio Pachamama, en el Período Lectivo 2019 – 2020

open access: yes, 2021
En la búsqueda de innovar la educación musical mediante el aprendizaje conceptual, tenemos a la transdisciplinariedad como eje para la renovación del currículo de Música y una actualización didáctica para las demás materias.
Jarrín Altamirano, Lenin Giovanni
core   +1 more source

Puerto Rican welfare queens and the semiotics of respectability: The language of race, class, and gender

open access: yesJournal of Sociolinguistics, Volume 28, Issue 3, Page 71-93, June 2024.
Abstract In this article, we explore how raciolinguistic parody functions in a society that hegemonically denies racial divisions. Through an analysis of Puerto Rican comedian Natalia Lugo's YouTube portrayals of her character, Francheska the Yal ‘welfare queen,’ we argue that covert racialization operates through a semiotics of respectability, whereby
Mary Elizabeth Beaton   +2 more
wiley   +1 more source

The application of elemental fingerprinting techniques to identify population connectivity using austrovenus stutchburyi recruits [PDF]

open access: yes, 2009
The density, distribution and dynamics of benthic bivalve populations are believed to be largely determined by the planktonic larval phase of the life history.
Niemand, Clarisse
core  

El Coloquio por los 50 años de SADAF: Una instancia de autorreflexión colectiva [PDF]

open access: yes
La celebración del quincuagésimo aniversario de la Sociedad Argentina de Análisis Filosófico se dio en el marco, como es usual en estos casos especiales, de la realización de una edición extraordinaria del tradicional Coloquio Anual de la institución ...
Penelas, Federico
core   +1 more source

Causalidad temporal entre producto y exportaciones para Colombia: Análisis sectorial. [PDF]

open access: yes
REVISTA SOCIEDAD Y ECONOMIA #12: TEMA CENTRAL: Estructura Productiva y Crecimiento Económicoproducto, exportaciones, Colombia, Análisis sectorial ...
Lina Viviana Rendón Vallejo
core  

An investigation to determine origin: age and otolith chemistry of a brown bullhead catfish (Ameiurus nebulosus) found at Okawa Bay, Lake Rotoiti [PDF]

open access: yes, 2009
Some time between 10 and 15 January 2009, a brown bullhead catfish(Ameiurus nebulosus) was found washed up on the shore of Okawa Bay, Lake Rotoiti. The elemental signature of the otolith was measured using laser ablation inductively coupled plasma mass ...
Hicks, Brendan J., Blair, Jennifer Marie
core  

Curso elemental de Derecho Mercantil

open access: yes, 2021
Prólogo del libro “Curso Elemental de Derecho Mercantil”, el cual presenta un breve análisis de dicha publicación que consiste en una compilación de conferencias dictadas en clase y las monografías que los alumnos de derecho mercantil presentaron cada ...
Cortés, Félix
core   +1 more source

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