Results 31 to 40 of about 15,785 (257)

Potencialidad reactiva de agregados para hormigón en Uruguay. Correlación entre la metodología de la barra de mortero y el prisma de hormigón (acelerada y tradicional)

open access: yesRevista ALCONPAT, 2022
Se analizó la correlación entre los criterios internacionales para definir el grado de reactividad en los ensayos de expansión de la barra de mortero y del prisma de hormigón (metodología acelerada y tradicional). Experimentalmente se aplicaron las tres
Patricia Vila   +3 more
doaj   +1 more source

Integrating indigenous crops in agroforestry systems: Lesser yam and teak mixed systems are more profitable than monocultures in Indonesia

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Major staple crops are often introduced and cultivated in monocultures. Yams are staple crops native to the majority of low‐ and middle‐income countries and can provide an alternative to introduced staple crops. We showed that lesser yams cultivated together with teak trees (planted at the border of the farm) are more profitable than lesser yam ...
Budiadi   +5 more
wiley   +1 more source

El coeficiente de eficacia del humo de sílice

open access: yesMateriales de Construccion, 1999
Silica fume is a pozzolanic addition specially used to get high resistance concrete. Present Spanish standards on additives dictate that silica fumes have to comply with specific requirements when used as concrete addition.
M. Pilar Alaejos Gutiérrez   +1 more
doaj   +1 more source

Ethnobotanical insights into the medicinal and food uses of Lamiaceae in the Mediterranean region: A systematic review and meta‐analysis

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
For generations, Mediterranean communities have used Lamiaceae or Labiatae plants like rosemary, thyme or mint to care for their health and to enrich their food. By bringing together dispersed knowledge from across the Mediterranean region, our review revealed the continuing relevance of Lamiaceae while also compiling past uses that may hold future ...
Fuencisla Cáceres   +3 more
wiley   +1 more source

Modificación de Betún-Venezuela por reacción de Friedel y Crafts

open access: yesMateriales de Construccion, 1987
In this work, a Venezuelan-bitumen of newtonian nature was modified by Friedel and Crafts reaction, changing it in new materials that present pseudoplastic characteristics, with very different properties from the original product. These new materials are
Manuel Blanco   +2 more
doaj   +1 more source

Influencia de la aplicación de la norma G050 en el clima de seguridad de las obras de construcción del distrito de Surquillo

open access: yesRevista del Instituto de Investigación de la Facultad de Minas, Metalurgia y Ciencias Geográficas, 2020
La presente investigación tiene como objeto estudiar la relación entre la aplicación de la norma G050 (variable independiente) y el clima de seguridad de las obras de construcción del distrito de Surquillo (variable dependiente). La metodología utilizada
Edson Del Águila Guerrero
doaj   +1 more source

Open‐land‐derived agroforestry and effects of abandonment of management of the main crop on ecosystem services and woody plant diversity

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Tropical forests are rapidly declining. One promising strategy to reverse the loss of tropical forest is the establishment of agroforestry on open land. We combined interviews with biodiversity surveys to learn general lessons from success and nonsuccess stories of the establishment of open‐land‐derived coffee agroforests in one of the world's ...
Lucas M. Fonzaghi   +3 more
wiley   +1 more source

Estructuras desplegables aéreas. Casos de estudio y propuesta de refugio = Aerial deployable structures. Case studies and shelter proposal

open access: yesArte, Diseño e Ingeniería, 2023
Las estructuras desplegables han sido ampliamente utilizadas en el terreno de la arquitectura efímera, más concretamente en el campismo. La aparición en 2003 de la tienda “2seconds” marca un hito en la cultura popular.
Paula Álvarez-Garcia, Manuel Domínguez
doaj   +1 more source

The shared benefits of fallen fruits: A novel mechanism stabilizing a nursery pollination mutualism between Sambucus and kateretid beetles

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Understanding how cooperative interactions remain stable matters for biodiversity because many plants rely on specialist insects that can also impose reproductive costs. We studied the interaction between Sambucus sieboldiana and seed‐consuming Heterhelus beetles through detailed field observations and pollination experiments.
Suzu Kawashima   +3 more
wiley   +1 more source

Synergy‐based crop suitability assessment for agrivoltaics: An easy‐to‐use traffic‐light framework for temperate climates

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Climate change and the growing demand for renewable energy are putting increasing pressure on land, as food production and solar power generation often compete for the same areas. In this study, we assessed which temperate‐region crops are best suited for agrivoltaics, a technology combining farming and solar electricity production on the same land. We
Salome Hauger   +6 more
wiley   +1 more source

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