نتایج جستجو برای: partial angle stack

تعداد نتایج: 374891  

2014
Yuan-Zeng Hao

In the title compound, [Zn(C18H28NO)2]·CH2Cl2, the Zn(II) atom is N,O-chelated by two crystallographically independent salicyl-aldehyde imine ligands, leading to a distorted tetra-hedral coordination sphere. The dihedral angle between the planes of the two metallacycles is 88.69 (6)°. Intra-molecular non-classical C-H⋯O hydrogen-bonding inter-actions are observed. In the crystal, the complex mo...

2011
Xiao Peng Yan Yuan Xue Chen

In the title compound, C(35)H(30)N(4)P(2), the diphenyl-phosphanyl and diphen-yl(2-pyridyl-imino)-λ(5)-phosphanyl groups are attached to the central methyl C atom with a P-C-N angle of 114.09 (16)°. The mol-ecules stack along the b axis and inter-connect through C-H(pyrid-yl)⋯N(pyrid-yl) inter-actions, forming an infinite chain structure. The parallel chains are further inter-connected via C-H(...

2010
Guang-Xiang Liu

In the title salt, C(20)H(22)N(2) (2+)·2C(12)H(4)N(4) (-), the cations and anions stack along the b axis into segregated columns. In the cation, which has a crystallographically imposed centre of symmetry, the dihedral angle between the benzene and pyridine rings is 89.14 (4)°. Centrosymmetrically related anions form dimers by π-π stacking inter-actions, with centroid-centroid separations of 3....

2013
Mathias Schulze Wilhelm Seichter Edwin Weber

In the title compound, C17H12N2O3, the mean planes of the benzene ring and the quinoline moiety are inclined to one another by 11.0 (1)°. The nitro substituent is twisted at an angle of 7.9 (2)° with respect to the attached benzene ring. Intra-molecular O-H⋯N and C-H⋯N hydrogen bonds occur. The crystal is constructed of mol-ecular stacks without involvement of π-stacking inter-actions, but show...

2014
Emily M. Low Robert L. LaDuca

In the title co-crystal, C25H32N4O2·C14H10O5, mol-ecules are connected into supra-molecular chains aligned along [102] by O-H⋯N hydrogen bonding. These aggregate into supra-molecular layers oriented parallel to (20-1) by C-H⋯O inter-actions. These layers then stack in an ABAB pattern along the c crystal direction to give the full three-dimensional crystal structure. The central chain in the dip...

Journal: :Applied optics 2006
Pierre Lecaruyer Emmanuel Maillart Michael Canva Jannick Rolland

In the context of surface plasmon resonance (SPR) kinetic biochips, it is important to model the SPR phenomenon (i.e., extinction of reflectivity) toward biochip design and optimization. The Rouard approach that models reflectivity off a thin-film stack is shown to be extendable to any number of absorbing layers with no added complexity. Using the generalized Rouard method, the effect of SPR is...

2014
Tanmay Das Prabhanjan D. Kulkarni S. C. Purandare Harish C. Barshilia Somnath Bhattacharyya Prasanta Chowdhury

We observed interfacial chemical sharpening due to uphill diffusion in post annealed ultrathin multilayer stack of Co and Pt, which leads to enhanced interfacial perpendicular magnetic anisotropy (PMA). This is surprising as these elements are considered as perfectly miscible. This chemical sharpening was confirmed through quantitative energy dispersive x-ray (EDX) spectroscopy and intensity di...

Journal: :فیزیک زمین و فضا 0
مهرداد سلیمانی منفرد عضو هیات علمی علی خلیل زاده دانش آموخته کارشناسی ارشد/دانشگاه شاهرود

the conventional approach to seismic data analysis consists of two main steps: estimating seismic velocities, (the subsurface macro-model), and seismic imaging, (mapping of the reflected seismic energy to the reflector positions). the aim and the major challenge in the seismic data analysis is the construction of the best undistorted image. this challenge would be more problematic when geometri...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده ریاضی 1393

در ابتدا به طور مختصر ارتباط بین مسائل تغییراتی و معادلات دیفرانسیل را بیان می کنیم. همان طور که می دانیم هر معادله دیفرانسیل را می توان به صورت ‎egin{equation} label{yek}‎ ‎a(u)= 0‎ ‎end{equation}‎ نوشت، که در آن ‎$ a(u) $‎ یک عملگر دیفرانسیل معمولی یا جزئی خطی یا غیرخطی و ‎$ u $‎ مجهول می باشد. برای حل این معادلات و به خصوص معادلات دیفرانسیل جزیی غیرخطی راه حل مشخصی وجود ندارد.حساب تغییر...

1996
Shi-Qing Wang Leslie H. Allen

The thermal stability of an a-Ti film in contact with a d-TiN film in the structure of a TiN/Ti/TiN film stack on SiO2 substrates was studied by in situ sheet resistance (Rs) measurement, Auger electron spectroscopy, glancing angle x-ray diffractometry, cross-sectional transmission electron microscopy, scanning electron microscopy, and atomic force microscopy. It was found that nitrogen dissolv...

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