Results 101 to 110 of about 33,419 (191)

Exploring the spatial and temporal evolution of landscape ecological risks under tourism disturbance: A case study of the Min River Basin, China

open access: yesEcological Indicators
Numerous ecological issues will arise from the expansion of tourism-related infrastructure and activities, potentially having a major effect on the ecosystem. However, its impact on landscape ecological risk (LER) is still poorly understood.
Yuying Lin   +7 more
doaj   +1 more source

Biostimulants‐driven improvements in productivity, resource use efficiency and protein yield in pea–barley intercrops

open access: yesAgrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Biostimulants promote plant growth, nutrient uptake, and drought tolerance, reducing reliance on synthetic fertilizers. Intercropping, involving multiple crop species on the same land, is a promising practice. In Denmark, pea (Pisum sativum)–barley (Hordeum vulgare) intercrop (PBIC) is commonly used for grain and fodder production.
Vaibhav Pradip Chaudhary   +2 more
wiley   +1 more source

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

open access: yesTecnología 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   +3 more
doaj  

A arte de ler. Ler para quê?

open access: yes, 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

Monoallelic POLR3A Variants Cause Early‐Onset Peripheral Neuropathy

open access: yesAnnals of Neurology, Volume 100, Issue 3, Page 655-671, September 2026.
Objective Biallelic variants in genes encoding the RNA polymerase III complex (Pol III) cause a spectrum of neurological disorders primarily affecting the central nervous system. Monoallelic variants have been reported in the POLR3B subunit only, associated with neurodevelopmental disorder, epilepsy, and peripheral neuropathy.
Luiza L. P. Ramos   +46 more
wiley   +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

open access: yesEcological 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

open access: yesBioResources, 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

open access: yesRemote 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   +4 more
doaj   +1 more source

LER Vacuum Studies [PDF]

open access: yes, 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

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