Results 11 to 20 of about 1,652,719 (226)

APPLICATION OF GIS TECHNOLOGIES TO BUILD SPATIAL PREDICTORS FOR MAPPING FOREST ECOSYSTEM FUNCTIONS AT THE LOCAL LEVEL [PDF]

open access: yesВопросы лесной науки, 2022
The article presents the experience of using GIS technologies to prepare spatial predictors for their further use in modeling and mapping the dynamics of forest ecosystem functions.
M. S. Savin   +2 more
doaj   +1 more source

THE COMPARISON OF DRAINAGE NETWORK EXTRACTION BETWEEN SQUARE AND HEXAGONAL GRID-BASED DEM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The automatic extraction of valleys or ridges from DEM is a long term topic in the GIS and hydrology fields and a number of algorithms have been developed.
L. Wang, T. Ai
doaj   +1 more source

Research and Application of A New Hydrographic Datasets: A Case Study in Dongting River Basin

open access: yesGuan'gai paishui xuebao, 2023
【Objective】 High-resolution hydrographic datasets have become increasingly accessible which will have a significant impact on hydrological modelling such as runoff and flood inundation. In this paper, we present a new hydrographic dataset.
HUANG Zequn   +6 more
doaj   +1 more source

Neutralized solar wind ahead of the Earth's magnetopause as contribution to non-thermal exospheric hydrogen [PDF]

open access: yesAnnales Geophysicae, 2018
In a most recent paper by Qin and Waldrop (2016), it had been found that the scale height of hydrogen in the upper exosphere of the Earth, especially during solar minimum conditions, appears to be surprisingly large. This indicates that during minimum
H. J. Fahr   +3 more
doaj   +1 more source

Effect of UV Radiation and Salt Stress on the Accumulation of Economically Relevant Secondary Metabolites in Bell Pepper Plants

open access: yesAgronomy, 2020
The green biomass of horticultural plants contains valuable secondary metabolites (SM), which can potentially be extracted and sold. When exposed to stress, plants accumulate higher amounts of these SMs, making the extraction and commercialization even ...
Jan Ellenberger   +7 more
doaj   +1 more source

Soil erosion estimation using Geographic Information System (GIS) and Revised Universal Soil Loss Equation (RUSLE) in the Siwalik Hills of Nawalparasi, Nepal

open access: yesJournal of Water and Climate Change, 2021
Soil erosion is one of the gravest environmental threats to the mountainous ecosystems of Nepal. Here, we combined a Geographic Information System (GIS) with the Revised Universal Soil Loss Equation (RUSLE) to estimate average annual soil loss, map ...
Durga Bahadur Tiruwa   +3 more
doaj   +1 more source

Calibration of discrete element parameters for simulating wheat crushing

open access: yesFood Science &Nutrition, Volume 11, Issue 12, Page 7751-7764, December 2023., 2023
The mechanical properties of wheat grains were measured and analyzed using discrete element software, which provided crucial data for their processing in a mill. The optimal parameters were calculated and incorporated into the EDEM model for computation, which resulted in a relative error of 1.6% between the calculated and observed values, confirming ...
Xuefeng Wang, Wenbin Wu, Huapo Jia
wiley   +1 more source

A Robust Channel Head Extraction Method Based on High‐Resolution Topographic Convergence, Suitable for Both Slowly and Fastly Eroding Landscapes

open access: yesJournal of Geophysical Research: Earth Surface, Volume 128, Issue 9, September 2023., 2023
Abstract Channel networks exert a key control on drainage basins shape and dynamics, including the transfer of water and sediments throughout basins, and thus hydrosedimentary hazards. Landscape dissection by channels results from the competition between hillslope processes and channelized erosion processes such as overland flow or debris flows.
Aude Lurin   +3 more
wiley   +1 more source

Modelling the spatial distribution of DEM Error [PDF]

open access: yes, 2005
Assessment of a DEM’s quality is usually undertaken by deriving a measure of DEM accuracy – how close the DEM’s elevation values are to the true elevation.
Carlisle, Bruce
core   +1 more source

Physical Conditions and Variability Processes in AGN Jets through Multi-Frequency Linear and Circular Radio Polarization Monitoring

open access: yesGalaxies, 2016
Radio polarimetry is an invaluable tool to investigate the physical conditions and variability processes in active galactic nuclei (AGN) jets. However, detecting their linear and circular polarization properties is a challenging endeavor due to their low
Ioannis Myserlis   +5 more
doaj   +1 more source

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