نتایج جستجو برای: ensity functional theory

تعداد نتایج: 1318135  

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

stabilities and quantum molecular descriptors of cyclophoshphamide (an anticancer drug)-functionalized (8,0) zigzag and (4,4) armchair carbon nanotubes (cnts) complexes in water were studied using density functional theory (dft) calculations. two attachments namely the sidewall- and tip-attachments are considered for the model constructions. calculations of the total electronic energy (et) and ...

Journal: :physical chemistry research 0
tayebeh hosseinnejad department of chemistry, faculty of science, alzahra university, vanak, tehran, iran

the main purpose of this research is to investigate computationally the tautomeric reaction pathway of 5-methyl-3-methylthio-1,2,4-triazole from the thermodynamical and mechanistical viewpoints. in this respect, density functional theory (dft) in conjunction with the quantum theory of atoms in molecule (qtaim) has been employed to model the energetic and electronic features of tautomeric mechan...

Journal: :physical chemistry research 0
mahmood moradi physics department, college of science, shiraz university, shiraz, iran bahareh binaei ghotbabadi physics department, college of sciences, shiraz university, shiraz 71454, iran

the density and polarization profiles of the dipolar hard ellipsoids confined between hard walls are studied using the density functional theory (dft). the hyper-netted chain (hnc) approximation is used to write excess grand potential of the system with respect to the bulk value. the number density is expanded up to zero and first order in polarization to find the results. for the zero order in...

Journal: :iranian journal of child neurology 0
narges adibsereshki 1. department of psychology and education of exceptional children, faculty of university of social welfare and rehabilitation sciences, & pediatric neurorehabilitation research center. tehran, iran abbas nesayan 2. phd in psychology & education of exceptional children, department of psychology, university of bojnord, bojnord, iran roghayeh asadi gandomani 2. phd in psychology & education of exceptional children, department of psychology, university of bojnord, bojnord, iran masood karimlou 3. department of statistics, university of social welfare and rehabilitation sciences, tehran, iran

how to cite this article: adibsereshki n, nesayan a, asadi gandomani r, karimlou m. the effectiveness of theory of mind training on the social skills of children with high functioning autism spectrum disorders. iran j child neurol. summer 2015;9(3):40-49. abstract objective children with autism spectrum disorders (asd) tend to have problems in establishing and maintaining their social relations...

Amir Hossein Hakimiounb Reza Ghiasi,

Equilibrium geometry, electronic structures, and vibrational modes of CoB8- were investigated in the PBEPBE/6-311+G(d,p) level of theory. The nucleus independent chemical shift (NICS) analysis and magnetizability values were used for studying of aromaticity in CoB8-. The effects of different solvents on the structure and frontier orbital energies were calculated using the polarizable continuum ...

Mahmoud Mirzaei

The electronic and structural properties of pristine and carbon doped (C-doped) boron nitride nano-ribbons(BNNRs) have been studied employing density functional theory (DFT) calculations. Total energies, gapenergies, dipole moments, and quadrupole coupling constants (qcc) have been calculated in the optimizedstructures of the investigated BNNRs. The results indicated that the stability and gap ...

In this manuscript, density functional theory was used to explore structural, vibrational and optical properties of the (Sc2O3)n (n=1-5) cluster systems using DFT/B3LYP/LanL2DZ level of computation. Different stable isomers were obtained and numerous chemical parameters such as HOMO-LUMO gap, ionization potential and electron affinity were calculated successfully. Stability of the clusters was ...

The fixed point alternative methods are implemented to giveHyers-Ulam  stability for  the quintic functional equation $ f(x+3y)- 5f(x+2y) + 10 f(x+y)- 10f(x)+ 5f(x-y) - f(x-2y) = 120f(y)$ and thesextic functional equation $f(x+3y) - 6f(x+2y) + 15 f(x+y)- 20f(x)+15f(x-y) - 6f(x-2y)+f(x-3y) = 720f(y)$   in the setting ofintuitionistic fuzzy normed spaces (IFN-spaces).  This methodintroduces a met...

Journal: :journal of physical & theoretical chemistry 2015
maryam ahangari-givi jamshid najafpour khadijeh kalateh

in this study, the geometries of the [sininhn]q and [sicunhn]q clusters, (n = 4,5,6 and q = 0,+1,-1) complexes have been optimized to form complexes with four, five and six planar and nonplanarsubstituents, with negative, neutral or positive atomic charge, using density functionaltheory (dft) at b3lyp/6-311+g (3df, p) computational level and then their thermodynamicstability were investigated b...

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