Results 21 to 30 of about 183,468 (342)

A new photobioreactor for continuous microalgal production in hatcheries based on external-loop airlift and swirling flow [PDF]

, 2009
This study deals with the scale of a new photobioreactor for continuous microalgal production in hatcheries. The combination of the state-of-art with the constraints inherent to hatcheries has turned the design into a closed, artificially illuminated ...
Aoubed, Benkhelifa, Borowitzka, Carvalho, Chisti, Cornet, Coulteau, Falkowski, Gupta, Hébrard, Ingham, Janssen, Legentilhomme, Loubière, Molina Grima, Muller-Feuga, Muller-Feuga, Pottier, Pruvost, Pruvost, Pruvost, Pruvost, Richmond, Rico-Villa, Roustan, Spolaore, Sukenik, Tzovenis, Vandu, Wu   +29 more
core   +3 more sources

Attenuation Law of Stress Waves in Cracked Rock Mass under Different Confining Pressures

Advances in Civil Engineering, 2019
Through theoretical analysis and indoor model tests, this paper explores the attenuation law of stress waves in the intact confined rock mass and cracked rock mass under different confining pressures, especially the relationship between the stress ...
Xiaoming Lou, Rui Luo, Jin Yu
doaj   +1 more source

Absorption Parameters for Glucose Solution for Gamma Ray at 59.54 keV

ARO-The Scientific Journal of Koya University, 2016
Photon absorption parameters for glucose solution at different concentrations such as linear attenuation coefficient, mass attenuation coefficient, effective atomic number, electron density and density determined at 59.54 keV photon energy.
Maan S. Al-Arif, Diyaree O. Kakil
doaj   +1 more source

Study of γ-ray energy losses in the ionic crystalsusingMonte Carlo code [PDF]

Kirkuk Journal of Science, 2015
In this paper, measurements were carriedout of thecalculated attenuation of the ranges gamma rays energy(279,356,479,662) KeV and using radioactive sources (Hg203, Ba133, W189, Cs137).
Abdulhadi M. Ghelab, Duraid B. Deikran, Waad M. AL_Hamdani   +2 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

Journal 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, Shaymaa H. J, Wisam A. Radhi, Ziyad T.Almalki, Muzahim M. A   +4 more
doaj   +1 more source

Calculation of the Effects of Silver (Ag) Dopant on Radiation Shielding Efficiency of BiPbSrCaCuO Superconductor Ceramics Using EGS4 Code

Applied Sciences, 2023
In the current study, the effects of silver (Ag) additive on the radiation shielding efficiency of BiPbSrCaCuO superconducting ceramics was calculated using the EGS4 code and discussed theoretically by comparison with XCOM data.
Selim Kaya
doaj   +1 more source

Calibration of an HPGe detector and self-attenuation correction for Pb-210: Verification by alpha spectrometry of Po-210 in environmental samples [PDF]

, 2007
In this work the calibration of an HPGe detector for Pb-210 measurement is realised by a liquid standard source and the determination of this radionuclide in solid environmental samples by gamma spectrometry takes into account a correction factor for ...
Bochud, F., Buchillier, T., Froidevaux, P., Laedermann, J.P., Moise, K.N., Saidou,   +5 more
core   +1 more source

The Application of Adaptive Time Gain Compensation in an Improved Breast Ultrasound Tomography Algorithm

Applied Sciences, 2019
In order to better detect information about a mass in breast tissue, an ultrasound tomography algorithm based on adaptive time gain compensation (TGC) was designed.
Chang Liu, Binzhen Zhang, Chenyang Xue, Guojun Zhang, Wendong Zhang, Yijun Cheng   +5 more
doaj   +1 more source

Fabrication, characterization, simulation and experimental studies of the ordinary concrete reinforced with micro and nano lead oxide particles against gamma radiation

Nuclear Engineering and Technology, 2021
The concrete is considered as an important radiation shielding material employed widely in nuclear reactors, particle accelerators, laboratory hot cells and other different radiation sources.
K. Mokhtari, M. Kheradmand Saadi, H. Ahmadpanahi, Gh. Jahanfarnia   +3 more
doaj   +1 more source

Investigation of radiological properties of imaging agents used in nuclear medicine with different methods and GATE/Geant4 simulation program [PDF]

Nuclear Technology and Radiation Protection, 2023
This study aims to determine the radiological properties of various radiopharmaceuticals used in nuclear medicine. In the study, mass attenuation coefficient values in different energy ranges were obtained for six different radiopharmaceuticals ...
Sahmaran Turan, Tugrul Taylan
doaj   +1 more source