Results 21 to 30 of about 3,275,520 (334)

Temporal and Spatial Variations of Secchi Depth and Diffuse Attenuation Coefficient from Sentinel-2 MSI over a Large Reservoir

open access: yesRemote Sensing, 2020
The Alqueva reservoir (South of Portugal) in the Guadiana river basin constitutes the most important water resource in southern Portugal for domestic and agricultural consumption.
G. Rodrigues   +6 more
semanticscholar   +1 more source

Effective attenuation coefficient and penetration depth of 630 nm laser light in polyvinyl alcohol slime glue phantoms simulating the human brain tumour [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2022
The effectiveness of optical methods such as photodynamic therapy (PDT) depends on the amount of light distribution within the tissue to aid their potential for early cancer detection in a quantitative and non-invasive manner.
Lindokuhle Ntombela   +2 more
doaj   +1 more source

Linear attenuation coefficient measurement in polymer composite

open access: yesIraqi Journal of Physics, 2019
Linear attenuation coefficient of polymer composite for beta particles and bremsstrahlung ray were investigated as a function of the absorber thickness and energy.
Nesreen B. Al-Rawi
doaj   +1 more source

A Mineral X-ray Linear Attenuation Coefficient Tool (MXLAC) to Assess Mineralogical Differentiation for X-ray Computed Tomography Scanning

open access: yes, 2020
X-ray computed tomography (XCT) is becoming one of the most important techniques in the geosciences. The technique relies on linear attenuation coefficient differences in order to reveal the internal structure of the rocks. In this work, we present a new
L. Bam, Jodie A. Miller, M. Becker
semanticscholar   +1 more source

Numerical simulation analysis of attenuation characteristics of ultrasonic propagation in tailing slurry

open access: yesGong-kuang zidonghua, 2018
In view of problems that existing ultrasonic detection method for concentration of tailing slurry has low accuracy and too many parameters, and cannot accurately reflect attenuation characteristics of the ultrasonic propagation in tailing slurry ...
WANG Jianxin, GAO Xin, ZHANG Yanping
doaj   +1 more source

Investigation of shielding of standard materials and glass for stopping 662 KeV gamma ray penetrations

open access: yesTikrit Journal of Pure Science, 2023
Calculations on shielding are required for building a gamma ray radiography exposure room to ensure that the workers are exposed to radiation. The linear attenuation coefficient ( ) is a measurement used to evaluate the radiation diffusion and ...
Berun Nasralddin Ghafoor   +1 more
doaj   +1 more source

Rapid detection of the adulterants in milk using gamma radiation

open access: yesJournal of Agriculture and Food Research, 2023
Milk and dairy adulteration practice nowadays is becoming a global concern. The present study discloses the role of gamma irradiation as a cost-effective and rapid-detection approach to detect adulterants in milk instead of using expensive and time ...
Manali Chakraborty   +2 more
doaj   +1 more source

Attenuation Coefficients for Water Quality Trading [PDF]

open access: yesEnvironmental Science & Technology, 2014
Water quality trading has been proposed as a cost-effective approach for reducing nutrient loads through credit generation from agricultural or point source reductions sold to buyers facing costly options. We present a systematic approach to determine attenuation coefficients and their uncertainty.
Keller, Arturo A   +7 more
openaire   +4 more sources

Measurement of the Attenuation Coefficient in Fresh Water Using the Adjacent Frame Difference Method

open access: yesPhotonics, 2022
The attenuation coefficient of a water body is one of the important factors for describing its features. However, its remote measurement in real time is still a challenge.
Gang Yang   +5 more
doaj   +1 more source

Study the Effect of adding Carboxy Methyl Cellulose Powder to Low Density Polyethylene on Shielding Radiation for the X-ray

open access: yesJournal of Kufa-Physics, 2018
The attenuation measurements of  x-ray of  voltage range (21kv) for hosted polymer material were done using  x-ray unit, in order to extract the effect of adding carboxy methyl cellulose material (CMC) to low density polyethylene on x-ray radiation ...
Raed M.Shaban   +4 more
doaj   +1 more source

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