نتایج جستجو برای: energy x

تعداد نتایج: 1227904  

2008
Olivier Goulet

• To be aware of how malnutrition presents and how to screen, assess, and monitor patients for nutritional risk and for response to nutritional support; • To be aware of the importance of the routine screening all patients for malnutrition and of the continued monitoring of those at risk; • To appreciate the value of such diagnostic methods combined with measures of growth and development to in...

Background: To enhance the dose to tumor, the use of high atomic number elements has been proposed.Objective: The aim of this study is to investigate the effect of gold nanoparticle distribution on dose enhancement in tumor when the tumor is irradiated by typical monoenergetic X-ray beams by considering homogeneous and inhomogeneous distributions of gold nanoparticles (GNPs) in the tumor.Method...

محبوبه میرزاده, , محمد اخوان, , پرستو ملکی, ,

  We have studied the structural and electrical properties of Gd(Ba2-xLax)Cu3O7+δ [Gd(BaLa)123], Gd(Ba2-xNdx)Cu3O7+δ [Gd(BaNd)123], and Nd(Ba2-xPrx)Cu3O7+δ [Nd(BaPr)123] compounds with 0.0≤x≤0.8 prepared by the standard solid-state reaction. The XRD patterns show that all of the samples with x≤0.5 are isosructure 123 phase, but in Gd(BaNd)123 and Nd(BaPr)123 there are several impurity peaks in...

حسین خسرو آبادی, , وحید دادمهر ومحمد اخوان, ,

  Single phase polycrystalline Gd1-xPrxBa2Cu3O7-δ samples with x=0.05 , 0.10, and 0.15 have been prepared by standard solid state reaction technique and characterized by XRD and SEM analysis. The electrical resistivity, Hall effect and magnetoresistance measurements have been on the samples. The electrical resistivity measurements indicate a reduction of transition temperature (Tc) and an incre...

Journal: :international journal of bio-inorganic hybrid nanomaterials 2015
h. zahedi a. mollahosseini e. noroozian

according to circumstance of kerman sarcheshmeh cooper complex that its anode slime is mainly consisted of cu, ag, au, pb and se. in this work, recovery of silver from anode slime and subsequent synthesis of silver nanoparticles from leaching solution was made. silver was separated from anode slime by using of hno3 and hcl. x-ray fluorescence spectroscopy (xrf) was used to characterize anode sl...

Gh Ataei, M Khadem Abolfazli M Mahdavi S R Mahdavi,

Background: Gold nanoparticles are emerging as promising agents for cancer therapy and are being investigated as drug carriers, photothermal agents, contrast agents and radiosensitisers.Objective: The aim of this study is to understand characteristics of secondary electrons generated from interaction of gold nanoparticles GNPs with x-rays as a function of nanoparticle size and beam energy and ...

Courtney Knaup Mansour Zabihzadeh Mehdi Ghorbani Mohammad Ali Behrooz Mozafar Naserpour, Toktam Moshirian

Introduction: To enhance the dose to tumor, the use of high atomic number elements has been proposed. Objective: The aim of this study is to investigate the effect of gold nanoparticle distribution on dose enhancement in tumor when the tumor is irradiated by typical monoenergetic X-ray beams by considering homogeneous and inhomogeneous distributions of gold nanoparticles (GNPs)...

A.M. Rana, M. Afzal, M. Ismail, M. Nadeem, S. Amjad, S.A. Buzdar,

Background: Radiotherapy Treatment Planning requires different dosimetric quantities as input in order to calculate a desired dose distribution. This study has been focused to evaluate the depth dose characteristics of superficial X-rays being used for radiotherapy treatment. Materials and Methods: Computerized 3-D water phantom of multi-data system was used. The measurements were made...

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