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Alternative method of diffraction-enhanced imaging
(
Elsevier B.V.
, 2007 , Article)
Diffraction-enhanced imaging (DEI) is a radiographic technique that derives contrast from an object's X-ray absorption, refraction gradient and small-angle scatter properties (extinction). The DEI imaging system prepares ...
Homotopy perturbation method for nonlinear partial differential equations of fractional order
(
Elsevier B.V.
, 2007 , Article)
The aim of this Letter is to present an efficient and reliable treatment of the homotopy perturbation method (HPM) for nonlinear partial differential equations with fractional time derivative. The fractional derivative is ...
Disability, depression and somatization in a low back pain population
(
Blackwell Publishing Asia
, 2006 , Article)
Objective: The aim of this study was to determine the prevalence of low back pain (LBP) in a primary care setting population and examine its association with the symptoms of depression and somatization.
Methods: This ...
The mathematical theory of finite and infinite dimensional topological spaces and its relevance to quantum gravity
(
Elsevier Ltd
, 2009 , Article)
The present work gives first a review of the mathematical theory of finite and infinite dimensional topological spaces. Subsequently we connect the discussion with E-infinity theory and the theory of partially ordered sets. ...
Is hypertension a predictor for heart failure? A cross cultural comparison over a 10-year period
(
Elsevier B.V.
, 2005 , Article)
This was a retrospective cohort study to assess the effect of hypertension (HTN) among Qatari and Asian patients admitted to the Hamad General Hospital in Qatar with heart failure (HF) and to identify risk factors that ...
Confidence intervals for the quantiles of the Weibull distribution based on record values
(
Nova Science Publishers Inc
, 2008 , Article)
We consider likelihood-based and bootstrap confidence intervals for the quantiles based on record values from the Weibull distribution. We developed also intervals for the difference of quantiles based on two independent ...
Self-implantation of Cz-Si: Clustering and annealing of defects
(
Elsevier
, 2006 , Article)
Observations of vacancy clusters formed in Czochralski (Cz) Si after high energy ion implantation are reported. Vacancy clusters were created by 2 MeV Si ion implantation of 1 × 10 15 ions/cm 2 and after annealing between ...
Corrosion properties of duplex treated Ti-6Al-4V alloy in chloride media using electrochemical and positron annihilation spectroscopy techniques
(
Elsevier B.V.
, 2006 , Article)
The corrosion properties of duplex-treated and nitrided Ti-6Al-4V have been investigated in 0.025, 0.25 and 2.5 M NaCl using electrochemical techniques, Positron Annihilation Spectroscopy (PAS), X-ray diffraction (XRD), ...
Investigations of He <sup>+</sup> implantation and subsequent annealing effects in InP
(
Elsevier
, 2006 , Article)
The influence of 70 keV He + ion implantation and subsequent annealing of Cz-indium phosphide (InP) samples has been investigated using a slow positron beam-based Doppler broadening spectrometer. Three samples with ion ...
Positron annihilation and ion beam analysis of ion-bombardment-induced hydrogen release and oxidation of ultra high molecular weight polyethylene
(
Elsevier
, 2007 , Article)
Ultra high molecular weight polyethylene was bombarded with He+ and Ar+ ions to fluences ranging from 1013 to 2×1016 ions/cm2. Rutherford backscattering and nuclear reaction analysis were applied to study mechanism of ...