Results 131 to 140 of about 79,060 (245)

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  

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

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  

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

, 2019
Poetry. 
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

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

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

Notitie duurzaamheid in relatie tot het bodembeschermingsbeleid [PDF]

, 2007
Discussienotitie over inpassen van duurzaamheid in het bodembeschermingsbeleid. Wat is duurzaamheid en hoe kun je dit vormgeven/uitdrukken/bepalen in het beleid, en hoe kan het huidige bodembeschermingsbeleid hierop in de toekomst aansluiten (of ...
Rutgers M, Schouten AJ, Mesman M
core  

Temporal Replication and Sampling Efficiency in High‐Frequency Autonomous and Manual eDNA Sampling

Environmental DNA, Volume 8, Issue 5, September‐October 2026.
Accounting for temporal correlation in eDNA time series can improve the accuracy of ecological inference about the influence of hydrological covariates on eDNA concentration. Further, we found that MCE filters were more efficient than PES filters. ABSTRACT Environmental DNA (eDNA) sampling is a valuable tool for ecological research, but its reliability
Ben C. Augustine, Patrick R. Hutchins, Scott D. George, Chany C. Huddleston Adrianza, Michael J. Darling, Thomas R. Sadekoski, Adam J. Sepulveda   +6 more
wiley   +1 more source