نتایج جستجو برای: meso model

تعداد نتایج: 2110355  

2015
Birkan Tunç Ragini Verma Celine Rozenblat

Networks are among the most prevalent formal representations in scientific studies, employed to depict interactions between objects such as molecules, neuronal clusters, or social groups. Studies performed at meso-scale that involve grouping of objects based on their distinctive interaction patterns form one of the main lines of investigation in network science. In a social network, for instanc...

2007
Yan Wang

Recently we proposed a periodic surface (PS) model for computer aided nano design (CAND). This implicit surface model allows for parametric model construction at atomic, molecular, and meso scales. In this paper, loci surface reconstruction is studied based on a generalized PS model. An incremental searching algorithm is developed to reconstruct PS models from crystals. Two metrics to measure t...

Journal: :mechanics of advanced composite structures‎ 2014
roham rafiee vahid firouzbakht

prediction of mechanical properties of carbon nanotube-based composite is one of the important issues which should be addressed reasonably. a proper modeling approach is a multi-scale technique starting from nano scale and lasting to macro scale passing in-between scales of micro and meso. the main goal of this research is to develop a multi-scale modeling approach to extract mechanical propert...

Journal: :Chemical communications 2013
Ayaka Yamaji Satoru Hiroto Ji-Young Shin Hiroshi Shinokubo

Treatment of meso-mesityl 5,15-diazaporphyrin with alkyllithiums in toluene at low temperature provided monoalkylated diazachlorins through highly regioselective nucleophilic addition at the β-position near the meso-nitrogen atom.

Journal: :Chemical communications 2007
Hiromitsu Maeda Masahiro Hasegawa Atsushi Ueda

Dipyrromethanes with meso-pyridyl groups form various hydrogen bonding structures such as dimeric and hexagonal structures and infinite chains. The formation of the self-assembled structures and chains depends on the existence of meso-pyridyl nitrogen in the solid state.

Journal: :Dalton transactions 2010
Jianke Liu Chacko Jacob Kelly J Sheridan Firas Al-Mosule Brian T Heaton Jonathan A Iggo Mark Matthews Jeremie Pelletier Robin Whyman Jamie F Bickley Alexander Steiner

Pd(II) complexes in which 2-pyridyldiphenylphosphine (Ph(2)Ppy) chelates the Pd(II) centre have been prepared and characterized by multinuclear NMR spectroscopy and by X-ray crystallographic analysis. trans-[Pd(kappa(1)-Ph(2)Ppy)(2)Cl(2)] is transformed into [Pd(kappa(2)-Ph(2)Ppy)(kappa(1)-Ph(2)Ppy)Cl]Cl by the addition of a few drops of methanol to dichloromethane solutions, and into [Pd(kappa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1390

over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...

Journal: :Chemical communications 2014
Dowoo Park Na Young Choi Seong-Jin Hong Chang-Hee Lee

Acid-catalysed, '3+3' condensation of m-bispyrryl benzene derivatives with acetone afforded new non-aromatic macrocycles that can be converted to meso-alkylidenyl dibenzohexaphyrins carrying four exocyclic double bonds at meso-positions by DDQ oxidation.

Journal: :Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 2016

Some meso-tetra aryl porphyrinato manganese (III) acetate or chloride complexes including meso-tetraphenyl porphyrinato manganese (III) chloride (TPPMnCl), meso-tetrakis(2,3-dimethoxyphenyl)porphyrinato manganese(III) acetate, (T(2,3-OMeP)PMnOAc) and meso-tetrakis(pentaflourophenyl)porphyrinato manganese (III) acetate (TPFPPMnOAc) were synthesized. These porphyrins were used as catalyst in the ...

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