Search
Now showing items 511-520 of 3404
The role of catalyst in supercritical water desulfurization
(ELSEVIER SCIENCE BV, 2014)
We evaluated supercritical water (SCW) for sulfur removal from Arabian Heavy (AH) whole crude oil and two model feeds: hexyl sulfide (HS) in hexadecane (HD) and dibenzothiophene (DBT) in HD. We measured SCW desulfurization ...
The trans-cis and the azide-tetrazole ring-chain isomerization of 2-azido-1,3-azoles: Quantum chemical study
(ELSEVIER SCIENCE BV, 2015)
Quantum chemical calculations using Density Functional Theory (DFT) at the B3LYP/6-31++G(d,p) basis set level were performed to investigate the azide group rotation from the trans to the cis isomer and the azido-tetrazole ...
Subdivision of Spectra for Some Lower Triangular Double-Band Matrices as Operators on c(0)
(SPRINGER, 2018)
The generalized difference operator.a, b was defined by El- Shabrawy:.a, bx =.a, b ( xn) = ( anxn + bn- 1xn- 1) 1n = 0 with x- 1 = b- 1 = 0, where ( ak) and ( bk) are convergent sequences of nonzero real numbers satisfying ...
Intersubband optical absorption coefficients and refractive index changes in a graded quantum well under intense laser field: Effects of hydrostatic pressure, temperature and electric field
(ELSEVIER SCIENCE BV, 2014)
The effects of hydrostatic pressure, temperature, and electric field on the optical absorption coefficients and refractive index changes associated with intersubband transition in a typical GaAs/Ga0.7Al0.3As graded quantum ...
Serum Levels of Mannan-Binding Lectin in Patients with Crimean-Congo Hemorrhagic Fever
(MARY ANN LIEBERT, INC, 2010)
Objective: Mannan-binding lectin (MBL) is a central component of the innate immune response. Genetic variations in the MBL gene that reduce circulating levels and alter functional properties of the MBL are associated with ...
Investigation of self-compassion, self-confidence and submissive behaviors of nursing students studying in different curriculums
(CHURCHILL LIVINGSTONE, 2017)
Introduction: Today, nursing education which educates the future members of the nursing profession aims to gain them high self-esteem, selfconfidence and self-compassion, independence, assertiveness and ability to establish ...
A novel method for the calculation of bond stretching force constants of diatomic molecules
(PERGAMON-ELSEVIER SCIENCE LTD, 2016)
Chemical hardness is one of the chemical reactivity descriptors of chemical species and this concept has widely benefited from the development of Density Functional Theory (DFT). In the present report, chemical hardness ...
Screening of the antioxidant, antimicrobial and DNA damage protection potentials of the aqueous extract of Asplenium ceterach DC
(ACADEMIC JOURNALS, 2011)
In this study, in vitro antioxidant, antimicrobial and DNA damage protection potentials of the aqueous extract of Asplenium ceterach was firstly evaluated in addition to its total phenolic and flavonoid contents. Antioxidant ...
Pasteurella aerogenes as an Asymptomatic Bacteriuria Agent
(OXFORD UNIV PRESS, 2018)
'Asymptomatic bacteriuria' (ASB) is isolation of a specified quantitative count of bacteria in an appropriately collected urine specimen obtained from a person without symptoms or signs referable to urinary infection. ...
On semiderivations of *-prime rings
(SOC PARANAENSE MATEMATICA, 2015)
Let R be a *-prime ring, with involution * and center Z(R). An additive mapping F : R -> R is called a semiderivation if there exists a function g : R -> R, such that (i) F(xy) =F(x)g(y) + xF(y) = F(x)y + g(x)F(y) and (ii) ...