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Basic Concepts of Density Gradient Ultracentrifugation
2018This chapter reviews the development of centrifugal equipment and its achievements in various fields, especially in the field of life sciences. Based on the development of the equipment, centrifugal technology also plays a very crucial role in scientific research.
Jindi Wang, Jun Ma, Xuemei Wen
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Low-Density Limit: The Basic Idea
2002In this chapter we consider the low-density limit and the associated equations, including the Boltzmann equation. Here we limit ourselves to a quick outline of the main ideas underlying the emergence of the number process in the stochastic limit and its connection with the 2-particle scattering operator.
Luigi Accardi +2 more
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Basic Density-Functional Theory an Overview
Physica Scripta, 2004In these notes I have given a personally flavored exposeof static density- functional theory (DFT). I have started from standard many-body physics at a very elementary level and then gradually introduced the basic concepts of DFT. Successively more advanced topics are added and at the end I even discuss a few not yet published theories.
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Analysis of basic factors governing compacted powder density
Russian Journal of Non-Ferrous Metals, 2011Based on a theoretical analysis of the behavior of metal powders during compaction, basic factors governing the compacted powder density, i.e., the compaction pressure and the sizes of a powder particle and its grain, are determined. Mechanisms of the effect of these factors are considered, and a mathematical dependence for forecasting the compacted ...
I. E. Ignat’ev +3 more
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The Temporal Variability of Densities: Back to Basics
Oikos, 1995We suggest that an index of the temporal variability of abundances should measure proportional change. SD (log[X]) seems to provide a general and interpretable statistic. However, when based on raw counts, a variability measure incorporates sampling error as well as the variability of the underlying densities.
Brian H. McArdle, Kevin J. Gaston
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Isotonic estimators of monotone densities and distribution functions: basic facts
Statistica Neerlandica, 1993We present short proofs of some basic results from isotonic regression theory. A straightforward argument is given to show that the left continuous version of the concave majorant of the empirical distribution function maximizes the likelihood function f↦f(X,)…f(Xn) within the class of non‐increasing densities.
Groeneboom, P., Lopuhaä, H. P.
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Linfo – a visual basic program for lineament density, frequency and intersection density analysis
Earth Science Informatics, 2013This paper describes the development of visual basic program called ‘Linfo’ which can be used for calculation of spatial properties (orientation, length, density, frequency and intersection density) of lineaments. The program allows the user to analyze the orientation of lineaments easily and shows the results in the form of rose diagram.
A. C. Dinesh +2 more
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Level densities for basic and applied nuclear physics
Radiation Effects, 1986Abstract Nuclear level densities are a key ingredient in compound nuclear reaction calculations. They are, therefore, of importance to fields as diverse as fission and fusion reactor design and astrophysics. A review of present methods for calculating level densities is presented, which includes global approximation methods and rotational enhancement ...
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Calculation for density of molten slags using optical basicity
Ironmaking & Steelmaking, 2013AbstractA model for density calculation of multicomponent slags was developed in the present work. This model is an extension of a previous model proposed by the present author. Density values of molten slags were calculated from molar volume values, which were calculated from molar volume of pure component and mixing molar volume.
Q. F. Shu, K.-C. Chou
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Some Basic Variable Density Mechanisms in Turbulent Flows
2002The aim of this chapter is to point out the existence and emphasize the understanding of some of those properties which make variable density turbulent flows different from the incompressible ones.
P. Chassaing +4 more
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