Results 51 to 60 of about 25,387 (162)

A LER

Indústrias Culturais, 2007
  +5 more sources

Estudio Técnico-Económico de Sistemas Híbridos Basados en Hidrógeno para una Población Aislada de la Patagonia Argentina

Tecnología y Ciencia, 2019
El propósito del presente estudio es el diseño de sistemas energéticos híbridos eólico-hidrógeno para su comparación con un sistema basado en el uso de combustible fósil solamente.
Abdelbassat Abdelbaki, Héctor Lorenzetti, Ezequiel Leiva, Carlos Rodríguez   +3 more
doaj  

Towards an Integrated Orobanche Management: Understanding Farmers’ Decision-Making Processes Using a Discrete Choice Experiment

Agronomy
Controlling the Orobanche weed parasite is a major challenge for farmers, and the individual application of various management practices has not yet proven to be successful in addressing this issue.
Ahmed Yangui, Taheni Mlayeh, Zouhaier Abbes, Mohamed Kharrat   +3 more
doaj   +1 more source

Multi-scale identification of driving forces for landscape ecological risk: A case study of the basin containing three plateau lakes in Yunnan, China

Ecological Indicators
The continuous development of society, rapid urbanization, industrialization, and climate change have intensified conflicts between fragile ecological systems and limited natural resources.
Shu Wang, Quanli Xu, Junhua Yi
doaj   +1 more source

A arte de ler. Ler para quê?

, 2014
This research’s main objective is assessing the habits and literary preferences, knowing why readers read and what they want to find. The sample consists of individuals with university degrees or attending the university. This selection criterion was chosen because the aim was finding a group of individuals with settled reading habits, according to our
openaire   +1 more source

LER Vacuum Studies [PDF]

, 2000
During the Summer of 1999 the vacuum in LER was studied in order to answer a few questions: (1) how fast is the vacuum system cleaning; (2) when will the required operating pressure 10 nTorr be reached; (3) how fast do the TSP's saturate; and (4) what is the present average pressure in LER and what is the corresponding beam lifetime?
openaire   +1 more source

PREPARATION AND CHARACTERIZATION OF ACETIC ACID LIGNIN-BASED EPOXY BLENDS

BioResources, 2012
Lignin-based epoxy resin (LER) was prepared from phenolated lignin (PL) and epichlorohydrin (ECH) in the presence of sodium hydroxide. The eucalyptus acetic acid lignin (AAL) was first reacted with phenol in the presence of sulfuric acid to obtain PL ...
Fangeng Chen, Pan Feng,
doaj  

Assessing landscape ecological risk in the Southern Hill and Mountain Belt of China: A 30-year analysis and future projection

Ecological Indicators
Hills and mountains cover approximately 25 % of Earth’s landmass; therefore, investigating landscape ecological risk (LER) in these regions is imperative for ecosystem management.
Yezi Wang, Xijun Hu, Baojing Wei, Ziwei Luo, Zhao Wang, Cunyou Chen   +5 more
doaj   +1 more source

Spatiotemporal Dynamics and Influencing Factors of Landscape Ecological Risk in the Shandong Peninsula Urban Agglomeration Based on Sub-Watershed Units

Remote Sensing
Quantifying landscape ecological risk (LER) using multi-period land use data and ecological indicators is essential for understanding regional ecological dynamics. However, LER assessment is sensitive to spatial delineation, introducing uncertainty. This
Jue Xiao, Linyu Ma, Longqian Chen, Ting Zhang, Gan Teng   +4 more
doaj   +1 more source

Ler, ou não ler: eis a questão

, 2012
A literacia em saúde é de extrema importância em contexto familiar. Neste sentido, todos os setores sociais se devem envolvem para melhorar o estado de saúde das famílias. A capacitação dos cidadãos permite-lhes uma procura constante de qualidade de vida.
openaire   +1 more source