نتایج جستجو برای: total electron density

تعداد نتایج: 1429870  

Journal: :physical chemistry and electrochemistry 0

in a typical solitonic distribution, the soliton density is distributed over the entire moleculeand the present work shows how its density can be decomposed into solitonic and antisolitoniccomponents. it is found that there exists a unique electron as soliton over the anionicnanoconductor, while there are many other solitons and antisolitons. the solitonic states are furtherdecomposed to the ca...

Journal: :journal of physical and theoretical chemistry 0
atefe nejati department of physics, computational physics lab., qom branch, islamic azad university, qom, iran hasan tashakori department of physics, computational physics lab., qom branch, islamic azad university, qom, iran faramarz kanjouri faculty of physics, kharazmi university, tehran, iran amirhosein esmailian department of physics, computational physics lab., qom branch, islamic azad university, qom, iran

in this work we use density functional theory based on the ultra-soft pseudo-potential to calculate thestructural, mechanical and thermal properties of narrow single walled bn, aln and gan nanotubes.the electron-electron interactions were expressed within the local density approximation (lda). wehave also obtained the phonon dispersion and elastic constants of these nanotubes using the densityf...

2003
M. Garcia-Fernandez M. Hernandez-Pajares J. Sanz

[1] As it is known, the Abel transform has been proven to be a useful tool that offers the possibility to obtain vertical description of ionospheric electron density (among other neutral atmosphere parameters) through inversion of Global Positioning System (GPS) observations gathered by Low Earth Orbiters (LEO). This work is focused on extending the application of this technique to GPSMET data ...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1987

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1981

Journal: :acta medica iranica 0
f. asadi jamnani m. doosti m. zahraei m. ghazi sh. ahmadian

liver secretes a large range of very low density lipoprotein (vldl) particles of different sizes and svedberg flotation rates (sf). in plasma vldl is converted to low density lipoprotein (ldl)which in turn plays an important role in the development of atherosclerotic diseases; however,triglyceride (tg) rich vldl1 has been shown to be more deleterious than cholesteryl ester (ce) rich vldl2. ther...

Journal: :iranian chemical communication 2014
pouya karimi mahmoud sanchooli

stability of the π-π stacking interactions in the ben||n-substituted-coronene complexes was studied using the computational quantum chemistry methods (where ben is benzene and || denotes π-π stacking interaction, and n-substituted-coronene is coronene molecule which substituted with different number of n atoms). the results reveal simultaneous effects of structure and number of heteroatom on th...

2011
M. H. Denton T. E. Cayton

Single relativistic-Maxwellian fits are made to high-latitude GPS-satellite observations of energetic electrons for the period January 2006–November 2010; a constellation of 12 GPS space vehicles provides the observations. The derived fit parameters (for energies ∼0.1–1.0 MeV), in combination with field-line mapping on the nightside of the magnetosphere, provide a survey of the energetic electr...

Journal: :Journal of Geophysical Research 2004

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