نتایج جستجو برای: the slowness adaptive f

تعداد نتایج: 16131939  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this research we have studied the effect of some transition-metals (cu, ag and au) substitutions on two-electron reduction potential of flavins by application of dft method. all geometries have been optimized at blyp level of theory and “6-31+g** + lanl2dz” mixed basis set. the frequency job at the same method and basis sets has been performed to obtain gibbs free energy of compounds. it h...

Journal: :EAAE Annual Conference Proceedings 2019

2003
Gagandeep Singh Pratap Sharan Sandeep Grover

Obsessive slowness is described to be a syndrome of extreme slowness in ways various tasks are performed. Its existence as an independent syndrome is challenged by authors, who regard it to be a part of obsessive compulsive disorder. Behavioural techniques of prompting, pacing and shaping are recommended for treatment of this condition. We describe here a case of a 21 year old male patient who ...

Journal: :Geophysical Research Letters 2023

Abstract Small‐scale mid‐mantle heterogeneities (&lt;100 km) are revealed by various short‐period seismic waves with different sampling paths. Here, using dense stations in China, we present the observations of a new phase that arrives as PP precursor. This arrival represents P‐wave scattered at PdpP (“d” indicates depth heterogeneity) and appears two forms: (a) wave train increasing slowness f...

2007
M. Schimmel J. Gallart

[1] We introduce a coherence measure for seismic signal enhancement through incoherent noise attenuation. Our processing tool is designed for densely spaced arrays and identifies signals by their coherent appearance. The approach is based on the determination of the lateral phase coherence as function of distance, time, frequency, and slowness. The coherence is derived from the local phases of ...

2009
Robert L. Nowack

In the seismic tomography problem, the subsurface slowness distribution is estimated from the travel-times computed along generally curved rays. For a dense and uniform set of rays, the slowness distribution will be correctly reconstructed. However, for an uneven distribution of rays, the estimated slowness distribution may be influenced by the ray configuration. For the linear case, the seismi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

به طور کلی در فرآیندهای مارکوف ارگودیک دو بعدی یافتن فرم بسته توزیع ایستا، تنها برای حالات خیلی خاص امکان پذیر است. با توجه به این مشکل و نیز با توجه به اهمیت توزیع ایستا، بررسی و مطالعه رفتار مجانبی توزیع ایستای این فرآیندها مورد توجه قرار گرفته است. زنجیر قدم زدن تصادفی دو بعدی که در برخی متون به آن، فرآیند qbd دو طرفه نیز می گویند، یکی از این فرآیندها است. یک فرآیند qbd زمان گسسته یک زنجیر م...

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