نتایج جستجو برای: x ray spectrograph

تعداد نتایج: 667381  

درودیان, مسعود, طیبی فرد, سید علی , یزدانی راد, رحیم, احمدی, کامران,

X-ray powder diffraction data for Mo2.85Al1.91Si4.81 are presented here. The new Mo2.85Al1.91Si4.81 compound was successfully prepared, using the self-propagating high-temperature synthesis (SHS) technique. The starting atomic mixture of reactant powders was Mo + 2(1 - x)Si + 2xAl with 0.2 ≤ x ≤ 0.5. The final powder compound obtained by the SHS technique was determined to be in x = 0.2; Mo(Si,...

احمدی, عباس, احمدی, کامران, خالقی, شکوفه,

Cherenkov radiation is generated when relativistic charged particles move in a medium with refractive index larger than unity. Although, the refractive index is generally smaller than unity in X-ray region, in the vicinity of atomic absorption edges, the refractive index may exceed unity and Cherenkov radiation can be generated in soft X-ray region with a narrow band width. In this paper, the s...

Journal: :Astronomy and Astrophysics 2022

The Magellanic Clouds host a large population of high-mass X-ray binary (HMXB) systems, but although the Large Cloud (LMC) is an order magnitude more massive than Small Cloud, significantly fewer HMXBs are known. We conducted search for new in XMM-Newton observations, which we performed to investigate supernova remnant candidates supergiant shells LMC5 and LMC7. three observed fields located re...

Journal: :Monthly Notices of the Royal Astronomical Society 2023

X Persei is a persistent low-luminosity X-ray pulsar of period $\sim$835 s in Be binary system. The field strength at the neutron star surface not known precisely, but indirect signs indicate magnetic above $10^{13}$ G, which makes object one most magnetized pulsars. Here we present results observations performed with Imaging Polarimetry Explorer (IXPE). polarization signal was found to be stro...

Ali Shakeri-Zadeh Hossein Ghadiri, Mohammad Reza Ay, Saeed Sarkar Sara Khademi Seyed Mohammad Amini Sharmin Kharrazi

Introduction: To date, gold nanoparticles (GNPs) have been demonstrated to have great potential as contrast agent for CT imaging and therapeutics. This study was designed to evaluate any effect on X-ray attenuation that might result from using GNPs with a variety of size, surface chemistries and shapes.   Materials and Methods: Spherical GNPs and gold nanorod...

J. Tinlapat, M. Tungjai, N. Phathakanon, P. Ketnuam, S. Kothan,

Background: People occasionally undergo medical diagnostic X-ray examinations and expose their red blood cells to radiation. Radiation that is generated from medical diagnostic X-ray machines is widely used in medical diagnoses. One of the important parameters is kilo-voltage (kV) that is applied across the X-ray tube in medical diagnostic X-ray machines. Kilo-voltage influences the radiation d...

Journal: :The Astrophysical Journal 2021

We present an analysis of the optical properties three Ultra Luminous X-ray (ULX) sources identified in NGC 925. use Integral field unit data from George Mitchel spectrograph context Metal-THINGS survey. The for ULX-1 and ULX-3 are presented, while spaxel associated with ULX-2 had a low S/N, which prevented its analysis. also report kinematics dimensions nebula each ULX using ancillary PUMA Fab...

رشیدی, مهدی, شیرخانلو, حمید, صفاری, مصطفی, عوادی, محمد رضا,

Introduction: During recent years, carcinogenic effects of X-ray have been proven. Todays, lead is used in many equipment such as  coats, thyroid shield, and gloves for body protection against X-ray. However, these equipments have several disadvantegous including toxicity, heaviness, and inflexibility. Hence, newer methods like protective semisolid products (cream, ointment) for topical applica...

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