Results 11 to 20 of about 46,637 (281)

Characterizing TDS Risk in Appalachian Landscapes: Techniques to Identify Mine Spoil TDS Generation Potentials

open access: green, 2021
Surface mining for coal in the Central Appalachians contributes total dissolved solids (TDS) to headwater streams, especially below larger mines and associated valley fills. The objective of this study was to characterize the geochemical properties of a range of surface soils and associated geologic strata from the Central Appalachian coalfields and to
Daniel K. N. Johnson, W. Lee Daniels
openalex   +2 more sources

A thorough experimental assessment of THz-TDS plasma diagnostic techniques for nuclear fusion applications

open access: hybridReview of Scientific Instruments
In this paper, the study of a plasma diagnostic system based on the THz time domain spectroscopy technique is presented. Such a system could potentially probe a large part of the electromagnetic spectrum currently covered by several other diagnostics in a single measurement. This feature, keeping in mind the basic requirements for plasma diagnostics in
G. Galatola Teka   +7 more
openalex   +4 more sources

RATE TRANSIENT ANALYSIS FOR HOMOGENEOUS AND HETEROGENEOUS GAS RESERVOIRS USING THE TDS TECHNIQUE ANÁLISIS DE PRUEBAS DE CAUDAL VARIABLE PARA YACIMIENTOS DE GAS HOMOGÉNEOS Y HETEROGÉNEOS MEDIANTE LA TÉCNICA TDS

open access: greenCT&F Ciencia, Tecnología & Futuro, 2008
In this study pressure test analysis in wells flowing under constant wellbore flowing pressure for homogeneous and naturally fractured gas reservoir using the TDS technique is introduced.
Freddy- Humberto Escobar   +2 more
doaj   +1 more source

Energy Harvesting for TDS-OFDM in NOMA-Based Underwater Communication Systems

open access: yesSensors, 2022
Non-orthogonal multiple access (NOMA) is considered a promising multiple access technique for fifth generation (5G) mobile networks and tactical internet due to its high spectral efficiency.
Hamada Esmaiel, Haixin Sun
doaj   +1 more source

Chaotic Time-Delay Signature Suppression and Entropy Growth Enhancement Using Frequency-Band Extractor

open access: yesEntropy, 2021
By frequency-band extracting, we experimentally and theoretically investigate time-delay signature (TDS) suppression and entropy growth enhancement of a chaotic optical-feedback semiconductor laser under different injection currents and feedback ...
Yanqiang Guo   +4 more
doaj   +1 more source

Prototipe Sistem Pembuatan Larutan Nutrisi Otomatis pada Hidroponik Metode Nutrient Film Technique

open access: yesTechne, 2020
Prototipe Sistem Pembuatan Larutan Nutrisi Otomatis pada Hidroponik Nutrient Film Technique merupakan suatu sistem otomasi yang dapat mempermudah dan mempersingkat waktu pembudidaya dalam proses pembuatan larutan nutrisi untuk budidaya tanaman hidroponik.
Addy Rachmad Nurcahyo   +2 more
doaj   +1 more source

Reassessment of tritium content in CFC tiles exposed to the JET D-T campaign in 1997

open access: yesNuclear Materials and Energy, 2022
In 2019 two MkIIA divertor tiles (6IN3 and 4BN4) exposed during DTE1 were retrieved at CCFE for Thermal Desorption Spectroscopy (TDS) and pyrolysis analyses. A set of samples were prepared using a coring technique.
J. Likonen   +10 more
doaj   +1 more source

An approximation of behind-casing hydraulic conductivity between layers from transient pressure analysis

open access: yesDyna, 2019
Flow behind the casing has normally been identified and quantified using production logging tools. Very few applications of pressure transient analysis, which is much cheaper, have been devoted to determining compromised cemented zones.
Freddy Humberto Escobar   +2 more
doaj   +1 more source

On the gas content of transitional disks: a VLT/X-Shooter study of accretion and winds [PDF]

open access: yes, 2014
Transitional disks (TDs) are thought to be a late evolutionary stage of protoplanetary disks with dust depleted inner regions. The mechanism responsible for this depletion is still under debate.
Benisty, M.   +6 more
core   +2 more sources

EVALUATION OF GROUNDWATER QUALITY IN AL-WAFFA AND KUBAYSA AREAS USING MULTIVARIATE STATISTICAL ANALYSIS, AL-ANBAR, WESTERN IRAQ

open access: yesIraqi Geological Journal, 2020
The groundwater is a substantial source of fresh water and has been used for various anthropogenic uses. The aim of this work is to investigate groundwater quality and type in kubaysa and AL-Waffa areas, Anbar, Iraq using multivariate statistics approach.
Fayydh, Adnan
doaj   +1 more source

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