نتایج جستجو برای: xcom
تعداد نتایج: 72 فیلتر نتایج به سال:
Spine fixation is required in cases such as congenital spinal curvatures, vertebral fractures, sagittal collapse over time, painful kyphosis, and bone load due to tumors. Although there are many methods the literature, most commonly used spine method with pedicle screws. In these cases, it known that screws frequently body. this study, how radiological exposure of column dose was evaluated by s...
Shielding materials are extremely important in production or handling isotopes, nuclear reactors, accelerators, and medical centers, etc. The Monte Carlo simulation code Geant4 is one of the most common platforms for interaction radiation with matter. Therefore, this paper devoted to simulating partial absorption gamma-ray by Lead bronze alloys (Pb, Sn, Cu) different proportions using from 1.5 ...
A series of borotellurite glass system doped with copper oxide was synthesized using the method melt quenching. The density decreases whereas its molar volume increases in respect to concentration. amorphous nature prepared glasses proven utilisation XRD spectra. Meanwhile, samples' elastic properties are determined from measurement longitudinal and shear velocities ultrasonic technique. modulu...
The aim of this study is to investigate the gamma ray radiation absorption properties bismuth oxide (Bi2O3), and determine effect lead (PbO) additive in shielding Bi2O3. For reason, parameters such as mass attenuation coefficient (MAC), linear (LAC), half value layer (HVL), tenth (TVL) mean free path (mfp) were calculated theoretically for Bi2O3, PbO, 50% Bi2O3-50%PbO. all results obtained by u...
Penta-glasses with a 59B2O3–29SiO2–2LiF–( $$10-x$$ ) ZnO– $$x$$ TiO2 composition the melt-quench techniques were prepared. X-ray diffraction was used to examine nature of fabricated glasses. The changes in structure glasses studied by Fourier-transform infrared spectroscopy spectra. molar volume reduces as density increases. mechanical characteristics these evaluated. Besides, for glasses, Phy-...
The aim of this study is to calculate the experimental and theoretical mass attenuation coefficient some Br compounds by using transmission method. Also these values were determined total electronic section, atomic effective number, electron density Kerma. We performed calculations in direct excitation geometry. cross sections halogene measured a narrow beam good geometry high resolution Si(Li)...
In the current study, it was shown that polystyrene (PS) composites holding tungsten (VI) oxide were formed in groups (10% to 50%) by radical polymerization. For this goal, styrene reacted with BPO for 2.5 hours at 70 °C tetrahydrofuran (THF) give consistent polymer. Synthesized PS defined FTIR, GPC (Mn = 7900 g/mol PDI 1.66), SEM and 1H NMR spectroscopy. PS-tungsten between 80-85°C. The gamma-...
The occurrence of falls is an urgent challenge in our aging society. For wearable devices that actively prevent falls or mitigate their consequences, a critical prerequisite is knowledge on the user’s current state of balance. To keep such wearable systems practical and to achieve high acceptance, only very limited sensor instrumentation is possible, often restricted to inertial measurement uni...
The increasing radiation applications in our daily life makes it essential to protect ourselves from the harms of by using alternative, cheap and natural materials. present study aimed analyze shielding abilities green red clayey soils Oltu/Erzurum Turkey, reinforced with waste tires marble dust. For purpose investigate features samples, attenuation parameters were determined EpiXS software, wh...
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