Results 171 to 180 of about 43,968 (289)

Influence of elevation, climate, snowmelt and floral abundance on body size of solitary bees

open access: yesEcological Entomology, EarlyView.
We measured body size in bee species from a 10‐year specimen collection from Colorado sub‐alpine meadows (2450–3450 m) and tested effects of elevation and annual snowmelt, climate and floral abundance. 2 out of 4 bee species collected across a broad elevation range showed a decline in body size with higher elevations; the other two showed no effect ...
Lachlan C. Jones   +5 more
wiley   +1 more source

Determinants of diabetic retinopathy among adult and elderly individuals with diabetes. [PDF]

open access: yesCardiovasc Diabetol Endocrinol Rep
Addis WD   +25 more
europepmc   +1 more source

El deber del profeta : Comentario

open access: yes, 1923
Papel. - Artículo titulado EL DEBER DEL PROFETA : COMENTARIO publicado en NUEVO MUNDO (MADRID). - Procedencia: fondo Miguel de Unamuno.
Unamuno, Miguel de, 1864-1936
core  

The effect of caste, mass and colony identity on rescue priorities in the red imported fire ant

open access: yesEcological Entomology, EarlyView.
Fire ants will rescue brood when the brood becomes trapped underground. We find that rescuers may use odor cues to locate trapped rescue targets. We demonstrate that a single reproductive larva is preferentially rescued over a single worker larva, but that caches of multiple worker larvae receive equal treatment as a single reproductive larva.
Paige B. Caine   +3 more
wiley   +1 more source

El libro de los deberes

open access: yesOxímora: revista internacional d’Ètica i Política, 2017
Reseña de: ESTÉVEZ ARAUJO, José Antonio (ed.). (2013). El libro de los deberes. Las debilidades e insuficiencias de la estrategia de los derechos. Madrid: Trotta. 264 pp.
openaire   +2 more sources

Private money and money market integration: The role of payments infrastructure in nineteenth‐century Switzerland

open access: yesThe Economic History Review, EarlyView.
Abstract Using newly collected discount rate data for six Swiss cities from 1846 to 1893, we find no evidence of increasing integration during a 30‐year period of lightly regulated free banking. We attribute this to two structural issues: banks had incentives to ward off competitors by protecting their local monopolies or forming cartels, and there was
Daniel Kaufmann, Rebecca Stuart
wiley   +1 more source

Macrodeberes : hacia unos deberes significativos

open access: yesDIM: Didáctica, Innovación y Multimedia, 2017
En esta breve reflexión, se presenta un término propio, los Macrodeberes, como traducción del inglés Homeleaning, empleado por Peter Hutton para hacer referencia a un nuevo tipo de deberes que implican a más agentes educativos, desde un punto de vista colaborador, cooperativo e innovador.
openaire   +2 more sources

Peer Pressure: Do the Fitness Benefits of Animal Behavioral Traits Vary With Conspecific Density?

open access: yesEthology, EarlyView.
We show that the activity of juvenile North American red squirrels influenced their survival in a density‐dependent manner: more active individuals had higher survival under high conspecific density, whereas less active juveniles had higher survival under low densities. Juveniles who were both more active and aggressive were more likely to survive. Our
Deborah Ho   +5 more
wiley   +1 more source

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