Results 41 to 50 of about 288,364 (217)

Pequeños Condominios Familiares. Santiago, Chile, 2024 [PDF]

open access: yesARQ
El Edificio en Virrey Avilés y los Pequeños Condominios Familiares se diseñan desde las constricciones de sus respectivos sitios. El primero ocupa un lote típico de Buenos Aires, con un ancho de 8,66 metros, donde las circulaciones y espacios colectivos ...
Gabriel Lagos Dittborn   +2 more
doaj  

Historia del cólera en Colombia

open access: yesBiomédica: revista del Instituto Nacional de Salud, 1992
Para el médico es necesario conocer la historia de nuestra profesión. Con ello se consolida la base humanística, indispensable para el ejercicio de la medicina, y se adquieren conceptos éticos y deontológicos útiles en determinados momentos de nuestro ...
Fernando Serpa Flórez
doaj   +1 more source

Moving to Extremal Graph Parameters [PDF]

open access: yes, 2013
Which graphs, in the class of all graphs with given numbers n and m of edges and vertices respectively, minimizes or maximizes the value of some graph parameter? In this paper we develop a technique which provides answers for several different parameters:
Cameron, P. J.   +2 more
core  

Microstructural properties of non-supported microporous ceramic membrane top-layers obtained by the sol-gel process [PDF]

open access: yes, 1996
Dried and calcined non-supported membrane top-layers of SiO2, SiO2/TiO2, SiO2/ZrO2 (10, 20 and 30 mol% TiO2 and ZrO2, respectively) and SiO2/Al2O3 (10 mol% AlO1.5) were prepared using acid catalyzed hydrolysis and condensation of alkoxides in ethanol ...
Burggraaf, A.J.   +3 more
core   +2 more sources

Nitrogen content of herbarium specimens from arable fields and mesic meadows reflect the intensifying agricultural management during the 20th century

open access: yesJournal of Ecology, Volume 113, Issue 3, Page 555-569, March 2025.
Plant communities of agricultural habitats in Central Europe are directly impacted by management intensification. Using spectroscopic methods, leaf functional trait data were non‐destructively derived from herbarium specimens, showing an increase in leaf nitrogen content and leaf nitrogen:phosphorus ratio over nearly 170 years.
Paul Kühn   +4 more
wiley   +1 more source

Desenvolvimento de legenda e classificação da cobertura natural e antropismos ocorrentes no maciço do Mendanha

open access: yesColeção Estudos Cariocas, 2007
Este Relatório consolida todos os Serviços de Consultoria e Supervisão Técnica, com o estabelecimento da legenda de mapeamento dos ambientes naturais e antropizados ocorrentes no Maciço do Mendanha e do seu entorno, situado em terras do Município do Rio ...
Luis Góes Filho, Manoel Messias Santos
doaj   +1 more source

Reintroduction strategies for rare arable weeds in agricultural practice and their influence on yield

open access: yesWeed Research, Volume 64, Issue 5, Page 384-394, October 2024.
Abstract Agricultural intensification and changing landscape structure led to decreasing numbers of arable flora and fauna during the last decades. To counteract these declines, arable plant diversity needs to be restored. It is important to promote regional plant communities including endangered species to ensure adaption to agricultural landscapes ...
Matthias Schumacher   +2 more
wiley   +1 more source

A comparison of seven innovative robotic weeding systems and reference herbicide strategies in sugar beet (Beta vulgaris subsp. vulgaris L.) and rapeseed (Brassica napus L.)

open access: yesWeed Research, Volume 64, Issue 1, Page 42-53, February 2024.
Abstract More than 40 weeding robots have become commercially available, with most restricted to use in crops or fallow applications. The machines differ in their sensor systems for navigation and weed/crop detection, weeding tools and degree of automation.
Roland Gerhards   +4 more
wiley   +1 more source

Small Family Cohousing Projects. Santiago, Chile, 2024

open access: yesARQ
The Apartment Building in Virrey Avilés and the Small Family Cohousing are shaped by the constraints of their respective sites. The former occupies a typical lot in Buenos Aires, with a width of 8.66 meters, where circulations and collective spaces are ...
Gabriel Lagos Dittborn   +2 more
doaj   +1 more source

REC: Interventional Cardiology consolida su impacto y gana reconocimiento

open access: yesREC: Interventional Cardiology
En junio de 2023 se daba a conocer el primer factor de impacto de REC: Interventional Cardiology. Todos recibimos la noticia con gran ilusión, tanto los que trabajamos directamente en ella como nuestros autores, evaluadores y lectores.
José M. de la Torre-Hernández   +5 more
doaj   +1 more source

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