Results 51 to 60 of about 596,798 (261)

Cyber-Archaeometry: Novel Research and Learning Subject Overview

open access: yesEducation Sciences, 2021
The cyber archaeometry concerns a new virtual ontology in the environment of cultural heritage and archaeology. The present study concerns a first pivot endeavor of a virtual polarized light microscopy (VPLM) for archaeometric learning, made from digital
Ioannis Liritzis, Pantelis Volonakis
doaj   +1 more source

Migration pattern of silver eel (Anguilla anguilla, L.) in an obstructed river system. [PDF]

open access: yes, 2008
The downstream migration of European silver eels in the River Frémur was examined to determine the potential effects of the numerous migration barriers that exist on waterways in western France.
Acou   +62 more
core   +2 more sources

Risk analysis of water resources carrying capacity based on a novel early warning framework

open access: yesEnvironmental and Sustainability Indicators
Water Resources Carrying Capacity (WRCC) embodies the fundamental constraint relationship between water resource sustainability and regional economic growth as well as social development, serving as a key indicator for assessing regional sustainable ...
Heyuan Zhou   +3 more
doaj   +1 more source

Emergy analysis of ecological water resources in Tarim river tail region

open access: yesMATEC Web of Conferences, 2018
The lower reaches of the Tarim River (Chala-Taitma Lake) is a typical ecologically fragile and sensitive area in the arid river basin. By 2017, 17 ecological water conveyances have been continuously implemented in this area, and the accumulated ...
Zhang Xiangping   +3 more
doaj   +1 more source

Report on the water pollution investigation of the Yellow River below Volney, Iowa, 1965. [PDF]

open access: yes, 1965
This is a report on an investigation of pollution of the Yellow River below Volney ...

core  

European eel (Anguilla anguilla): prediction of spawner escapement from continental population parameters [PDF]

open access: yes, 2000
This paper describes the assessment of silver European eel (Anguilla anguilla) escapement based on a “sedentary” population fraction analysis in a 60-km2 watershed of northern Brittany (France).
Acou, Anthony   +3 more
core   +4 more sources

Seasonal biological social and cognitive mechanisms of mental health among Chinese adolescents

open access: yesScientific Reports
This study develops a “Bio-Social-Cognitive Dynamic Interaction Model” to explore seasonal mental health risks in Chinese adolescents. Using data from cross-sectional surveys (N = 6,121), longitudinal tracking (N = 1,000), and RCTs (N = 200), we assess ...
Ran Chai   +3 more
doaj   +1 more source

Prediction of Sediment Yield in the Middle Reaches of the Yellow River Basin Under Extreme Precipitation

open access: yesFrontiers in Earth Science, 2020
The Yellow River is one of the rivers with the largest amount of sediment in the world. The amount of incoming sediment has an important impact on water resources management, sediment regulation schemes, and the construction of water conservancy projects.
Suzhen Dang   +6 more
doaj   +1 more source

A visual positioning model for UAV’s patrolling video sequence images based on DOM rectification

open access: yesScientific Reports, 2023
With technological development of multi sensors, UAV (unmanned aerial vehicle) can identify and locate key targets in essential monitoring areas or geological disaster-prone areas by taking video sequence images, and precise positioning of the video ...
Haojie Liu, Wei Fan, Di Wu
doaj   +1 more source

Market-enhanced technological integration in favor of widespread Bt-cotton use in Yangtze river valley (China) [PDF]

open access: yes, 2010
The wide diffusion of Bt-cotton in China (mainland) is well documented. It is estimated that Bt-cotton covers about 70% of the national cotton areas. Cotton is produced in three regions: Yellow River Valley, Yangtze River Valley and Xinjiang Province ...
Fok, Michel, Xu, Naiyin
core  

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