نتایج جستجو برای: rotational path

تعداد نتایج: 169479  

Journal: :Analytical and bioanalytical chemistry 2009
Peter R Griffiths Limin Shao April B Leytem

Atmospheric analysis by open-path Fourier-transform infrared (OP/FT-IR) spectrometry has been possible for over two decades but has not been widely used because of the limitations of the software of commercial instruments. In this paper, we describe the current state-of-the-art of the hardware and software that constitutes a contemporary OP/FT-IR spectrometer. We then describe advances that hav...

Journal: :Symposium - International Astronomical Union 1972

Laminar mixing of glycerin in a chaotic mixer is carried by means of the blob deformation method. The mixer was a cylindrical vessel with two rotational blades which move along two different circular paths with a stepwise motion protocol. The flow visualization was performed by marking of the free surface of the flow with a tracer. The effects of controlling parameters such as rotational speed ...

Journal: :Monthly Notices of the Royal Astronomical Society 1951

Journal: :journal of solid mechanics 0
k torabi faculty of mechanical engineering, university of isfahan, isfahan, iran h afshari faculty of mechanical engineering, university of kashan, kashan, iran h najafi department of solid mechanics, faculty of mechanical engineering, politecnico di milano, milan, italy

in this paper, exact solution for two-plane transverse vibration analysis of axial-loaded multi-step timoshenko rotor carrying concentrated masses is presented. each attached element is considered to have both translational and rotational inertia. forward and backward frequencies and corresponding modes are obtained using transfer matrix method (tmm). the effect of the angular velocity of spin,...

2004
Wilbur C. K. Wong Albert C. S. Chung Simon C. H. Yu

Three-dimensional rotational angiography is a very useful tool for accessing abnormal vascular structures related to a variety of vascular diseases. Quantitative study of the abnormalities could aid the radiologists to choose the appropriate apparatuses and endovascular treatments. Given a segmentation of an angiography, effective quantitation of the abnormalities is attainable if the abnormali...

Journal: :Theor. Comput. Sci. 2002
José L. Balcázar Jorge Castro David Guijarro Hans Ulrich Simon

We prove a new combinatorial characterization of polynomial learnability from equiva lence queries and state some of its consequences relating the learnability of a class with the learnability via equivalence and membership queries of its subclasses obtained by restricting the instance space Then we propose and study two models of query learning in which there is a probability distribution on t...

1993
Stefano Ceri Rainer Manthey Elena Baralis Elisa Bertino Christoph Draxler Ulrike Griefahn Danilo Montesi Andrea Sikeler Letizia Tanca

This document constitutes the consolidated deenition of Chimera; it is a revised version of the T21D2 deliverable presented in June 1993 Author(s):

2015

The propagation of electromagnetic radiation is affected by three major phenomena: absorption, scattering, and turbulence. Absorption by molecular water vapor is the dominant mechanism of tropospheric attenuation at millimeter and infrared wavelengths, especially in the marine environment. Therefore, the understanding and accurate modeling of absorption by this molecule are important to atmosph...

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