Results 51 to 60 of about 23,390 (196)

The Completion of the Church Roof of San Antonio de Valero

open access: yesAnales del Instituto de Investigaciones Estéticas, 2012
El autor ha identificado un plano sin fechar para la construcción de un techo de madera sobre una iglesia sin nombre, correspondiente a un cálculo preparado en 1810 para el techado de la misión inacabada de San Antonio de Valero (El Álamo),
James Ivey
doaj   +1 more source

Curricular integration of an online platform for the learning of mathematics in primary education [PDF]

open access: yes, 2015
Presentamos el método Smartick para el aprendizaje de las matemáticas online, explicando cómo se ha integrado en el entorno escolar, en 11 colegios de educación primaria, dentro y fuera del horario de la clase de matemáticas.
Castro Hernández, Carlos de   +1 more
core   +3 more sources

On the botanical history and nomenclature of the New World genus Piscidia (Fabaceae)

open access: yesNordic Journal of Botany, EarlyView.
Piscidia L. (Fabaceae) is a New World genus with nine recognized taxa (seven species and two varieties). The previous nomenclatural revisions, made in 1910 and in 1969, are revisited here. The names Derris grandifolia Heyde & Lux ex Donn.Sm. and P. cubensis Urb. required step II lectotypifications, with an epitype for the latter name.
Camila Sánchez‐ Vega   +4 more
wiley   +1 more source

Análise de proveniência das contas verdes dos Perdigões [PDF]

open access: yes, 2010
A variscite é um mineral raro que oferece uma excelente opotunidade de estudo dos padrões de comércio e troca na Europa durante a Pré- História através da determinação da sua fonte de proveniência.
Hurtado Pérez, Víctor   +2 more
core  

School Disruption and Classroom Climate on Teachers’ Burnout and Wellbeing

open access: yesPsychology in the Schools, EarlyView.
ABSTRACT Teachers with high levels of burnout and reduced levels of wellbeing are twice as likely to leave the teaching profession. For those that stay, it can result in strained relationships with their pupils and a difficulty to effectively manage classroom behavior.
Julia R. Badger   +5 more
wiley   +1 more source

Evaluation of initial growth of poplar clones in North Patagonia [PDF]

open access: yes, 2014
En los valles irrigados de Río Negro y Neuquén, el cultivo de álamos acompañó históricamente la producción agrícola, utilizándose clones de Populus nigra L. en cortinas rompeviento y clones de Populus xcanadensis Moench. para las forestaciones en macizo.
Garces, Anibal C., Thomas, Esteban R.
core  

Predicting Drop‐Weight Impact Sensitivity From Molecular Graphs Using Physics‐Informed Artificial Intelligence

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
This work presents an approach for predicting the drop‐weight impact sensitivity of pure molecular explosives directly from 2D molecular graphs using physics‐informed artificial intelligence (AI) models. A dataset comprising experimentally measured sensitivities for 625 unique high‐explosive molecules is augmented with physics‐informed synthetic ...
Grant Hutchings   +4 more
wiley   +1 more source

Determinacion de algunas propiedades fisico-mecanicas de tableros contrachapados fabricados a partir de hibridos de alamo [PDF]

open access: yes, 2008
109 p.En este estudio se fabricaron tableros contrachapados a partir de dos híbridos de álamo y un tablero de muestra confeccionado con pino insigne, con el objetivo de comparar sus propiedades físicas y mecánicas para así ver cuanto difieren en ...
Molina Navarrete, Angela Adelina   +1 more
core  

Critical Review of Brazil Disk Techniques for Tensile Strength Characterization With an Emphasis on High Explosive Materials

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Mechanical properties are a critical performance metric for many high explosive (HE) materials and tensile strength properties are particularly important. Direct tensile measurements using dogbone shaped samples are the gold standard but they have the disadvantage that they are fairly large and require samples machined from billets.
Paul B. Mirkarimi
wiley   +1 more source

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