Results 61 to 70 of about 291,382 (251)

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

Introducció [PDF]

open access: yes, 2015
Amb el vuitè número de Catalan Historical Review, aquesta publicació de l’Institut d’Estudis Catalans consolida el seu lloc en la difusió internacional de la historiografia catalana amb la satisfacció de ...
Albert Balcells
core  

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

Free love: gratis y rentable Modelos innovadores de estrategias de marketing y negocios

open access: yesDixit, 2015
El aumento de la oferta de productos y servicios gratuitos se consolida como una tendencia a nivel mundial que afecta a los más diversos sectores de la economía. En el siguiente artículo, la autora discute este fenómeno en los mundos online y offline.
Alejandra Bretón
doaj   +1 more source

Theory of periodic swarming of bacteria: application to Proteus mirabilis [PDF]

open access: yes, 2000
The periodic swarming of bacteria is one of the simplest examples for pattern formation produced by the self-organized collective behavior of a large number of organisms.
A. Dufour   +23 more
core   +2 more sources

El sistema de abreviaturas en el Diccionario académico : Introducción (1726), institucionalización (1770) y consolidación (1780). La marcación del léxico específico [PDF]

open access: yes, 2009
En aquest treball s'analitza la introducció d'abreviatures en el Diccionario de la Real Academia Española, especialment les relacionades amb el lèxic específic, en la 1ª edició d'Autoridades (1726), en la incompleta 2ª edició d'Autoridades (1770) i en la
Pascual Fernández, Luisa   +1 more
core  

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

El fin del siglo XIX y el ocaso de la industria regional : el caso de las tabacaleras nayaritas

open access: yesSecuencia, 1987
Estudio de la industria  del  tabaco   en  su fase manufacturera, centrado en dos empresas nayaritas:    La  Sin  Rival   y  La  Cigarrera   de Tepic.  La etapa  artesanal  finaliza   cuando   se consolida el mercado  interno   y penetran   ca­pitales ...
Francisco Javier Castellón   +2 more
doaj   +1 more source

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