Results 21 to 30 of about 2,146,528 (354)

Hydrographic and hydrochemical characteristics of selected groundwater outflows in desert and semi-desert areas [PDF]

open access: yesJournal of Water and Land Development
The presence of natural groundwater outflows depends on many factors, such as lithology, geological structure, and climate. Areas with particularly poor crenological recognition are arid and semi-arid regions, primarily due to rarity of groundwater ...
Tadeusz Molenda
doaj   +1 more source

Hardware Design of 3-Axis Motion Platform with Load Compensation Mechanism [PDF]

open access: yes한국정밀공학회지, 2020
The motion platform supports the trainee in experiencing a sense of reality in virtual space by performing a motion on the available degrees of freedom for a motion that mimics a specific motion in connection with a virtual reality content or a simulator.
Jeong Woo Park   +4 more
doaj   +1 more source

The Hot Spring Hypothesis for an Origin of Life

open access: yesAstrobiology, 2019
We present a testable hypothesis related to an origin of life on land in which fluctuating volcanic hot spring pools play a central role. The hypothesis is based on experimental evidence that lipid-encapsulated polymers can be synthesized by cycles of ...
B. Damer, D. Deamer
semanticscholar   +1 more source

Spring water quality and discharge assessment in the Basantar watershed of Jammu Himalaya using geographic information system (GIS) and water quality Index(WQI)

open access: yesGroundwater for Sustainable Development, 2020
The demand for fresh spring water recently increased due to intensive domestic, industrial irrigation practices which typically caused depletion of water resources and deterioration of water quality.
A. Taloor   +6 more
semanticscholar   +1 more source

PENGELOLAAN MATA AIR UNTUK PENYEDIAAN AIR RUMAHTANGGA BERKELANJUTAN DI LERENG SELATAN GUNUNGAPI MERAPI (Springs Management for Sustainability Domestic Water Supply in the South West of Merapi Volcano Slope)

open access: yesJurnal Manusia dan Lingkungan, 2016
ABSTRAK Mata air merupakan pemunculan air tanah ke permukaan tanah. Pemanfaatan mata air sangat beragam, antara lain penggunaan untuk keperluan air minum, irigasi, perikanan, untuk obyek wisata. Mata air mempunyai debit terbatas, namun kualitasnya baik,
Sudarmadji Sudarmadji   +3 more
doaj   +1 more source

Parametric and numerical modeling tools to forecast hydrogeological impacts of a tunnel

open access: yesAcque Sotterranee, 2022
The project of interest involving a hydroelectrical diversion tunnel through a crystalline rock massif in the Alps required a detailed hydrogeological study to forecast the magnitude of water inflows within the tunnel and possible effects on groundwater
Valentina Vincenzi   +3 more
doaj   +1 more source

Overestimation of the effect of climatic warming on spring phenology due to misrepresentation of chilling

open access: yesNature Communications, 2020
Spring warming substantially advances leaf unfolding and flowering time for perennials. Winter warming, however, decreases chilling accumulation (CA), which increases the heat requirement (HR) and acts to delay spring phenology.
Huanjiong Wang   +6 more
semanticscholar   +1 more source

Spring technique for correction of multilevel deformity using hexapod external fixator

open access: yesJournal of Limb Lengthening & Reconstruction, 2018
Context: Osteotomies in several parts of one long bone are recommended for correction of a long, curved, and wide-angled deformity. Hexapod external fixators (HEFs) allow for the single-stage correction of multiplanar deformity, but they are heavy ...
Leonid N Solomin   +5 more
doaj   +1 more source

Slovenská terminológia travertínov, penovcov a príbuzných terestrických vápencov [PDF]

open access: yesGeologické práce. Správy, 2023
The paper follows on a review articles on Slovak travertines and tufa published in English in 2021. Geomorphological terms such as ‘fissure ridge’, ‘coalesced mound’, ‘self-buiding channel’, ‘keeled waterfall’, ‘smooth slope’, ‘terrased slope’, ‘dams ...
Daniel Pivko
doaj   +1 more source

An improved model for shield tunnels with double-layer linings and its application in engineering

open access: yesYantu gongcheng xuebao, 2021
An improved model for shield tunnels with double-layer linings is proposed. It can reflect the nonlinear characteristic of bending stiffness of segment joints and the failure mechanism of compression and shear springs between segments and secondary ...
WANG Jun 1, XU Guo-wen 2, WEI Yan-qing 1, HE Jia 1, HE Chuan 2, WANG Shi-min 2
doaj   +1 more source

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