Results 31 to 40 of about 46,637 (281)

Benchmarking coherent radiation spectroscopy as a tool for high-resolution bunch shape reconstruction at free-electron lasers

open access: yesPhysical Review Accelerators and Beams, 2020
We present a systematic comparison of two complementary methods for determining the longitudinal charge density profile of the compressed electron bunches in the soft x-ray free-electron laser FLASH: a frequency-domain technique—coherent transition ...
Bernhard Schmidt   +3 more
doaj   +1 more source

Can GNSS reflectometry detect precipitation over oceans? [PDF]

open access: yes, 2018
For the first time, a rain signature in Global Navigation Satellite System Reflectometry (GNSS‐R) observations is demonstrated. Based on the argument that the forward quasi‐specular scattering relies upon surface gravity waves with lengths larger than ...
Asgarimehr, Milad   +3 more
core   +1 more source

Evaluation of the effect of TiC precipitates on the hydrogen trapping capacity of Fe-C-Ti alloys [PDF]

open access: yes, 2014
The present work evaluates the hydrogen trapping behavior of different laboratory cast generic Fe-C-Ti martensitic alloys. Titanium carbides were precipitated in the materials by well-designed heat treatments.
Depover, Tom   +4 more
core   +2 more sources

Rancang Bangun, Uji Performansi dan Analisis Biaya Alat Pencampur Nutrisi

open access: yesTeknik, 2021
Tujuan penelitian ini adalah merancang bangun alat pencampur nutrisi tanaman pada sistem hidroponik DFT (Deep Flow Technique) yang dilengkapi dengan sistem kendali jumlah zat padat terlarut (TDS, satuan ppm) dan agitator.
Seri Intan Kuala   +4 more
doaj   +1 more source

Characterization of Nucleobases in Broadband Terahertz Spectra from 0.5 to 10 THz with the Air-Biased-Coherent-Detection Technique

open access: yesSensors, 2019
Terahertz time-domain spectroscopy (THz-TDS) is an effective coherent detection technique for deeply understanding the structures and functions of biomolecules.
Miao Yu   +6 more
doaj   +1 more source

Assessment of Spatial Structure of Groundwater Quality Variables Based on the Geostatistical Simulation [PDF]

open access: yesDesert, 2012
Our main objective in the present study was to assess the spatial variation of chemical and physical water properties. Prior to the design of groundwater quality monitoring networks, it is essential to investigate the spatial structure of the groundwater
Gh.R. Zehtabian   +2 more
doaj   +1 more source

Identification of black plastics with terahertz time-domain spectroscopy and machine learning

open access: yesScientific Reports, 2023
Several optical spectroscopy and imaging techniques have already proven their ability to identify different plastic types found in household waste. However, most common optical techniques feasible for plastic sorting, struggle to measure black plastic ...
Paweł Piotr Cielecki   +5 more
doaj   +1 more source

Local boron doping quantification in homoepitaxial diamond structures [PDF]

open access: yes, 2010
The capability of transmission electronmicroscopy (TEM) using the high angle annular dark fieldmode (HAADF,also labelled Z-contrast) to quantify boron concentration, in the high doping range between 1019cm−3 and 1021cm−3, is demonstrated.
A.J. García   +26 more
core   +4 more sources

Objective and efficient terahertz signal denoising by transfer function reconstruction [PDF]

open access: yes, 2020
As an essential processing step in many disciplines, signal denoising efficiently improves data quality without extra cost. However, it is relatively under-utilized for terahertz spectroscopy.
Chen, Xuequan   +3 more
core   +1 more source

A novel approach to sustainable water treatment utilising Cocos nucifera and Luffa acutangula

open access: yesDesalination and Water Treatment
Water quality depends on Total Dissolved Solids (TDS), an indicator of harmful pollutants in the water. Therefore, the primary goal of the study is to eliminate TDS utilising the new Cocos nucifera and Luffa acutangula natural filtering technique.
Ganesan Ramachandran   +3 more
doaj   +1 more source

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