VELOCITY SPECTRA—DIGITAL COMPUTER DERIVATION APPLICATIONS OF VELOCITY FUNCTIONS

Geophysics ◽  
1969 ◽  
Vol 34 (6) ◽  
pp. 859-881 ◽  
Author(s):  
M. Turhan Taner ◽  
Fulton Koehler
Keyword(s):  
Direct Determination ◽  
Mean Square ◽  
Velocity Data ◽  
Reflection Point ◽  
Wave Travel ◽  
Geological Information ◽  
Ground Coverage ◽  
The Common ◽  
Velocity Spectra

Multifold ground coverage by seismic techniques such as the common reflection point method provides a multiplicity of wave travel path information which allows direct determination of root‐mean‐square velocities associated with such paths. Hyperbolic searches for semblance among appropriately gathered arrays of traces form the basis upon which velocities are estimated. Measured semblances are presented as a velocity spectral display. Interpretation of this information can give velocities with meaningful accuracy for primary as well as multiple events. In addition, the velocity data can help correctly label events. This paper outlines the fundamental principles for calculating velocity spectra displays. Examples are included which demonstrate the depth and detail of geological information which may be obtained from the interpretation of such displays.

A Clear Sky Model of Diffuse Sky Radiance

1987 ◽  
Vol 109 (1) ◽  
pp. 9-14 ◽  
Author(s):  
F. C. Hooper ◽  
A. P. Brunger ◽  
C. S. Chan
Keyword(s):  
Direct Determination ◽  
Field Of View ◽  
Mean Bias Error ◽  
Bias Error ◽  
Mean Square ◽  
Clear Sky ◽  
Expected Values ◽  
Sky Radiance ◽  
Made In

A model, previously proposed, describing the sky radiance as a continuous function, has been calibrated from 11,000 individual measurements made in scans taken across springtime skies in Toronto using a narrow field of view radiometer. The model reproduces the measured sky radiance with a mean bias error under five percent and a root mean square error only slightly larger than the standard deviation of the measurements. The model is applied to the calculation of the ratio of the clear sky diffuse irradiance on a slope to that on a horizontal surface. Charts are presented for the direct determination of the expected values of these ratios for surfaces at three tilts and at any azimuth.

Matrix Method for Analysis the Effect of the Crystal Field on the Magnetic Moment of Co2+ Ion

2013 ◽  
Vol 651 ◽  
pp. 33-37
Author(s):  
E.F. Kustov ◽  
V.M. Novotortsev ◽  
I.L. Eremenko ◽  
E.O. Goncharov
Keyword(s):  
Magnetic Properties ◽  
Transition Metal ◽  
Magnetic Moment ◽  
Matrix Method ◽  
Direct Determination ◽  
Transition Metal Ions ◽  
Full Matrix ◽  
Crystal Fields ◽  
The Common

This paper introduces the common principals of theoretical matrix method for the direct determination of magnetic properties of transition metal ions, which is based on calculation of the full matrix of all the interactions. In this work this method was used to calculating, study and analysis the magnitude of magnetic moment of Co2+ ion in crystal fields with different symmetry.

scholarly journals An Approach towards the Determination of Alkalinity in Water, Its Experimental Consideration & Comparison with Traditional Method: An Overview

2016 ◽  
Vol 5 (3) ◽  
pp. 122
Author(s):  
Harshit Sharma ◽  
Richa Saxena
Keyword(s):  
Traditional Method ◽  
Carbonate Rocks ◽  
Direct Determination ◽  
Simple Calculation ◽  
Total Alkalinity ◽  
Acid Base ◽  
Theoretical Determination ◽  
Comparative Aspect ◽  
The Common

<em>Alkalinity is equal to the stoichiometric sum of the bases in solution therefore it includes all the acid neutralizing bases in water namely OH</em><em>ˉ</em><em>, CO</em><em><sub>3</sub></em><em>²ˉ</em><em> &amp; HCO</em><em><sub>3</sub></em><em>ˉ</em><em> ions. In the natural environment carbonate alkalinity tends to make up most of the total alkalinity due to the common occurrence and dissolution of carbonate rocks and presence of CO</em><em>2</em><em> in the atmosphere. Alkalinity varies with the location Acid-base titration is performed for their estimation but the theoretical determination for the type and extent of these ions is tedious process through traditional formulas known to us, (Volume of acid used up till Phenolphthalein &amp; Methyl orange end point). Here in this paper we are trying to simplify the method and reporting the direct determination of the extent of ions by simple calculation without using the formulas for specific ions under different conditions of alkalinity. Thus a comparative aspect of this approach with traditional method will be covered by us in this paper.</em>

The Direct Determination of I131 in Heterogeneous Fecal Specimens

1961 ◽  
Vol 41 (4) ◽  
pp. 380-384 ◽  
Author(s):  
Arthur F. Dratz ◽  
James C. Coberly
Keyword(s):  
Direct Determination

A New Method for Direct Determination of the Recoilless Fraction with Application to Magnetic Nanoparticles

2002 ◽  
Vol 721 ◽  
Author(s):  
Monica Sorescu
Keyword(s):  
Room Temperature ◽  
Average Particle Size ◽  
Direct Determination ◽  
Average Particle ◽  
Lattice Method ◽  
Recoilless Fraction ◽  
Single Room ◽  
Magnetite Particles ◽  
Physical Mixtures

AbstractWe propose a two-lattice method for direct determination of the recoilless fraction using a single room-temperature transmission Mössbauer measurement. The method is first demonstrated for the case of iron and metallic glass two-foil system and is next generalized for the case of physical mixtures of two powders. We further apply this method to determine the recoilless fraction of hematite and magnetite particles. Finally, we provide direct measurement of the recoilless fraction in nanohematite and nanomagnetite with an average particle size of 19 nm.

Sign in / Sign up

Export Citation Format

Share Document