Results 1 to 10 of about 3,497 (119)

Tuning Transmission Properties of Two-Dimensional Photonic Crystal Waveguides Using Functional Dielectric Cavities [PDF]

open access: yesMicromachines
In this study, the photonic band structure, transmissivity, and electric field distribution of a two-dimensional photonic crystal coupled waveguide structure are calculated using the supercell technique and finite element method.
Siqi Zhang   +5 more
doaj   +2 more sources

Transmissivity and groundwater flow exert a strong influence on drainage density [PDF]

open access: yesEarth Surface Dynamics, 2022
The extent to which groundwater flow affects drainage density and erosion has long been debated but is still uncertain. Here, I present a new hybrid analytical and numerical model that simulates groundwater flow, overland flow, hillslope erosion and ...
E. Luijendijk
doaj   +1 more source

GEOPHYSICAL SURVEY FOR GROUNDWATER IN PART OF OBIO/AKPOR LOCAL GOVERNMENT AREA OF RIVERS STATE, NIGERIA [PDF]

open access: yesGeological Behavior, 2023
This research is aimed at carrying out geophysical survey for groundwater in parts of Obio/Akpo Local Government Area of Rivers State, Nigeria, using the Schlumberger electrode configuration of vertical electrical sounding (VES) technique.
Owabie, W. Highpriest, Amonieah
doaj   +1 more source

Transmissivity Estimation and Mapping of the Dammam Karst Aquifer in Central Iraq

open access: yesIraqi Geological Journal, 2023
The most reliable method to determine an aquifer's transmissivity is pumping tests; however, these studies are time-consuming and costly. An alternative approach to estimating transmissivity is to use the well's specific capacity.
Sumayah Majeed   +2 more
doaj   +1 more source

A Study of Droplet Transmissivity Change by Characteristic of Mesh [PDF]

open access: yes한국정밀공학회지, 2018
Super-wettability surface has various applications and actively studied in many fields. However water droplet transmissivity on super-wettability mesh was not be studied.
Jinyoung Park, Woonbong Hwang
doaj   +1 more source

Mapping of Groundwater Productivity in Entire South Korea using Probabilistic Model [PDF]

open access: yesGeo Data, 2021
In this study, the correlation between specific capacity (SPC) and transmissivity (T) values of groundwater and various geological, topographical, soil, clinical, and forest-related factors was calculated using a probability technique-frequency ratio ...
Saro Lee, Panahi Mahdi
doaj   +1 more source

Impact of solid waste on groundwater quality in selected dumpsites in AkwaIbom State, Nigeria using resistivity and hydrochemical data

open access: yesBulletin of the Mineral Research and Exploration, 2021
This study examines the impact of solid waste on groundwater quality around three municipal dumpsites in AkwaIbom State, Nigeria using resistivity and hydrochemical data.
Ayatu Ojonugwa Usman   +5 more
doaj   +1 more source

Technical note: Analytical drawdown solution for steady-state pumping tests in two-dimensional isotropic heterogeneous aquifers [PDF]

open access: yesHydrology and Earth System Sciences, 2016
A new method is presented which allows interpreting steady-state pumping tests in heterogeneous isotropic transmissivity fields. In contrast to mean uniform flow, pumping test drawdowns in heterogeneous media cannot be described by a single effective or ...
A. Zech, S. Attinger
doaj   +1 more source

Fracture Transmissivity in Prospective Host Rocks for Enhanced Geothermal Systems (EGS)

open access: yesGeosciences, 2022
We experimentally determined the hydraulic properties of fractures within various rock types, focusing on a variety of Variscan rocks. Flow-through experiments were performed on slate, graywacke, quartzite, granite, natural fault gouge, and claystone ...
Johannes Herrmann   +4 more
doaj   +1 more source

Estimation of hydraulic parameters using VES sounding and fuzzy techniques in semi arid Khanasser Region, Syria [PDF]

open access: yesComputational Ecology and Software, 2022
An alternative approach was developed for evaluating the hydraulic conductivity (K) and the transmissivity (T) of an aquifer. The vertical electrical sounding (VES) measurements and fuzzy techniques (Takagi-Sugeno fuzzy model) are the base of this ...
J. Asfahani, Z. Ahmad
doaj  

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