نتایج جستجو برای: molecular moment

تعداد نتایج: 692845  

Journal: :The Journal of chemical physics 2009
Joakim Stenhammar Per Linse Per-Ake Malmqvist Gunnar Karlström

A general expression for the distribution of the fluctuating 2(l)-pole moment M(l) of a spherical sample of dielectric material is derived on the basis of dielectric theory combined with statistical mechanics. The formulas are compared with results from computer simulations of a weakly coupled Stockmayer fluid and the agreement is shown to be excellent. Furthermore, we calculate the size of the...

Journal: :Physical review letters 2017
S B Schoun A Camper P Salières R R Lucchese P Agostini L F DiMauro

We report on spectral intensity and group delay measurements of the highest-occupied molecular-orbital (HOMO) recombination dipole moment of N_{2} in the molecular-frame using high harmonic spectroscopy. We take advantage of the long-wavelength 1.3  μm driving laser to isolate the HOMO in the near threshold region, 19-67 eV. The precision of our group delay measurements reveals previously unsee...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2012
Niels Bode Eros Mariani Felix von Oppen

We provide a theory of the electronic transport properties of a graphene layer functionalized with molecular switches. Our considerations are motivated by the spiropyran-merocyanine system which is non-polar in its ring-closed spiropyran form and zwitterionic in its ring-open merocyanine form. The reversible switching between these two isomers affects the carriers in graphene through the associ...

Journal: :Nano letters 2008
Lucia Vitali Stefano Fabris Adriano Mosca Conte Susan Brink Mario Ruben Stefano Baroni Klaus Kern

The electronic structure of isolated bis(phthalocyaninato) terbium(III) molecules, a novel single-molecular-magnet (SMM), supported on the Cu(111) surface has been characterized by density functional theory and scanning tunneling spectroscopy. These studies reveal that the interaction with the metal surface preserves both the molecular structure and the large spin magnetic moment of the metal c...

As cancer is the top killer diseases in the world, the scientists and researchers have been searching the new drugs and remedy methods. Most of the anticancer drugs are organic compounds which were approved by the FDA while metallodrugs are very rare. In the present time, some palladium and rhodium complexes are going to use as anticancer molecules. The palladium (II) complex has higher antican...

Journal: :Computer Physics Communications 2005
Christoph Dellago Mor M. Naor

We use ab initio molecular dynamics simulation to calculate the dipole moment of water molecules in one-dimensional hydrogen bonded chains in narrow pores. The electronic charges are partitioned among the water molecules using maximally localized Wannier functions. For water molecules confined to the interior of a carbon nanotube we find an average dipole moment of about 2.7 D, almost 10 % lowe...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
A V Emelyanenko Atsuo Fukuda J K Vij

A molecular-statistical theory for the entire sequence of the chiral tilted smectic phases is derived. Uniaxial and biaxial subphases were found to be stable in different temperature ranges depending on the molecular parameters. The model of a chiral molecule possessing a strong transverse terminal dipole moment and a quadrupole moment located in the molecular core was used. Direct dispersion a...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
majid safajou jahankhanemlou mehdi salami kalajahi

a moment equations method was performed to study the reversible chain transfer catalyzed polymerization (rtcp) of styrene in 80°c. to do this, a kinetic scheme containing conventional free radical polymerization reactions and equilibrium reactions of rtcp was assumed. after obtaining mass balance equations, three moment equations were defined for free and dormant radicals and dead chains. monom...

Journal: کیمیای هنر 2014

The question of whether architectural creativity is more of an artistic or engineering nature is one with a long history but also one with no conclusive answer. The art camp would argue that technology should be treated as a means towards and end, and that technology alone cannot give meaning to our lives. The engineering camp on the other hand would argue that good problem-solving result...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده پزشکی 1391

به دلیل عوارض غیر قابل جبران توکسوپلاسموزیس در افراد دچار نقص سیستم ایمنی و نوزادان متولد شده از مادران آلوده، نیاز مبرم به تکنیک های سریع، حساس و دقیق برای شناسایی توکسوپلاسما گوندی احساس می شود. روش های مولکولی به عنوان روش های حساس تر و اختصاصی-تر از رو ش های سرولوژیک در تشخیص توکسوپلاسموزیس مطرح هستند. در این مطالعه، استفاده از روش real-time nasba برای سنجش کمی بار انگلی در خون ر ت های آلو...

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