WordNet

(geology) the deposition of one geological stratum on another
(geometry) the placement of one object ideally in the position of another one in order to show that the two coincide
the placement of one thing on top of another
form, arrange, or deposit in layers; "The fish are stratified in barrels"; "The rock was stratified by the force of the water"; "A statistician stratifies the list of names according to the addresses"
render fertile and preserve by placing between layers of earth or sand; "stratify seeds"
develop different social levels, classes, or castes; "Society stratifies when the income gap widens"
divide society into social classes or castes; "Income distribution often stratifies a society"
form layers or strata; "The rock stratifies"
the displacement of any point due to the superposition of wave systems is equal to the sum of the displacements of the individual waves at that point; "the principle of superposition is the basis of the wave theory of light" (同)Huygens'' principle of superposition

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/04/02 23:19:44」(JST)

Similarity recognition of molecular structures by optimal atomic matching and rotational superposition.

Helmich B, Sierka M.SourceInstitut für Chemie, Humboldt-Universität zu Berlin, Unter den Linden 6, Berlin D-10099, Germany.
Journal of computational chemistry.J Comput Chem.2012 Jan 15;33(2):134-40. doi: 10.1002/jcc.21925. Epub 2011 Oct 14.
An algorithm for similarity recognition of molecules and molecular clusters is presented which also establishes the optimum matching among atoms of different structures. In the first step of the algorithm, a set of molecules are coarsely superimposed by transforming them into a common reference coor
PMID 21997798

Measurement of the sound velocity in fluids using the echo signals from scattering particles.

Lenz M, Bock M, Kühnicke E, Pal J, Cramer A.SourceTechnische Universität Dresden, Fakultät Elektrotechnik und Informationstechnik, Institut für Festkörperelektronik, 01062 Dresden, Germany. michael.lenz@tu-dresden.de
Ultrasonics.Ultrasonics.2012 Jan;52(1):117-24. Epub 2011 Jul 13.
With conventional methods the sound velocity c in fluids can be determined using the back wall echo. This paper proposes a novel technique, in which the signals reflected by scattering particles suspended in a fluid are analysed instead. The basic idea is that the particles generate the strongest ec
PMID 21824636

Evaluation of algorithms for microperfusion assessment by fast simulations of laser Doppler power spectral density.

Wojtkiewicz S, Liebert A, Rix H, Maniewski R.SourceNalecz Institute of Biocybernetics and Biomedical Engineering, Warsaw, Poland.
Physics in medicine and biology.Phys Med Biol.2011 Dec 21;56(24):7709-23. Epub 2011 Nov 16.
In classical laser Doppler (LD) perfusion measurements, zeroth- and first-order moments of the power spectral density of the LD signal are utilized for the calculation of a signal corresponding to the concentration, speed and flow of red blood cells (RBCs). We have analysed the nonlinearities of the
PMID 22085805

Simple transform methods of a force curve obtained by surface force apparatus to the density distribution of a liquid near a surface

Amano Ken-ichi,Takahashi Ohgi
Physica A: Statistical Mechanics and its Applications 425, 79-89, 2015-05
… In addition, Kirkwood and linear superposition approximations are applied in order to derive the transform methods. … It is found that the transform method with Kirkwood superposition approximation (transform method 1) generally reproduces the more precise solvation structure than that with linear superposition approximation (transform method 2). …
NAID 120005555503