scholarly journals 2. Oblique-scattering method for measuring individual radiants and meteor velocities

1968 ◽  
Vol 33 ◽  
pp. 14-26 ◽  
Author(s):  
N. S. Andrianov ◽  
R. A. Kurganov ◽  
A. M. Nasirov ◽  
V. V. Sidorov
Keyword(s):  
Experimental Data ◽  
Scattering Method ◽  
Radio Communication ◽  
Forward Scatter ◽  
Scattering Technique ◽  
Communication Lines ◽  
Meteor Radio

In recent years, in addition to back-scatter radio methods of meteor studies, the oblique-scattering technique, earlier utilized for purposes of meteor radio-communication, has been more widely used. This has produced results, not only because of the availability of large quantities of experimental data obtained on numerous radio-communication lines, but also due to certain advantages of this ‘forward-scatter’ technique.

scholarly journals Measurement of Visibility and Present Weather Detection Using Scattering Technique of Light

2020 ◽  
pp. 07-10
Keyword(s):  
Light Beam ◽  
Extinction Coefficient ◽  
Narrow Band ◽  
Scattered Signal ◽  
Forward Scatter ◽  
Scattering Technique

A forward-scatter meter measures a small portion of light scattered out of a light beam into a relatively narrow band of scattering angles. The forward-scatter meter measurement is then used to estimate the extinction coefficient; the scattered signal is assumed to be proportional to the extinction coefficient.

scholarly journals Ca and S K-edge XANES of CaS calculated by different methods: influence of full potential, core hole and Eu doping

2019 ◽  
Vol 26 (1) ◽  
pp. 152-158 ◽  
Author(s):  
Ondřej Šipr ◽  
Wilayat Khan ◽  
Yves Joly ◽  
Ján Minár
Keyword(s):  
Experimental Data ◽  
Scattering Method ◽  
Full Potential ◽  
Core Hole ◽  
Potential Core ◽  
Edge Structure ◽  
The Core ◽  
The Finite Difference Method ◽  
Multiple Scattering Method ◽  
Flapw Method

Ca and S K-edge spectra of CaS are calculated by the full-potential Green's function multiple-scattering method, by the FLAPW method and by the finite-difference method. All three techniques lead to similar spectra. Some differences remain close to the edge, both when comparing different calculations with each other and when comparing the calculations with earlier experimental data. Here it is found that using the full potential does not lead to significant improvement over the atomic spheres approximation and that the effect of the core hole can be limited to the photoabsorbing atom alone. Doping CaS with Eu will not affect the Ca and S K-edge XANES of CaS significantly but may give rise to a pre-edge structure not present for clean CaS.

scholarly journals A new method for studying platelets, based upon the low-angle light scattering technique. 3. Aggregation hypersensitivity of platelets (ADP agonist) and search for corrective agents

2006 ◽  
Vol 20 (2) ◽  
pp. 57-66 ◽  
Author(s):  
Igor V. Mindukshev ◽  
Nikolay V. Goncharov ◽  
Elena Yu. Shabanova ◽  
Elena E. Ermolaeva ◽  
Maria O. Mironova ◽  
...  
Keyword(s):  
Light Scattering ◽  
Clinical Pathology ◽  
Tca Cycle ◽  
New Method ◽  
Scattering Method ◽  
Sodium Glutamate ◽  
Scattering Technique ◽  
Light Scattering Technique

A new method for studying platelets based on low-angle light scattering has previously revealed that platelets taken from pregnant women with preeclampsia are hypersensitive to ADP, with aggregation developing at concentrations of 7–15 nmol l−1. The method has been applied to further studies in experimental toxicology and clinical pathology. Toxicological experiments with fluoroacetate (FA), an inhibitor of TCA cycle, showed that the platelet hypersensitivity could also be caused by energy depletion. In modeling experiments, the low-angle light scattering method was applied to assessment of potential corrective agents of the pathological states related to hypersensitivity of platelets. Sodium glutamate (SG) was shown to be a potent antiaggregantin vitro, and subsequentin vivostudies demonstrated that SG can apparently serve as anaplerotic agent and normalize the platelet status of rats intoxicated with FA. Donators of nitric oxide (NO), such as isosorbide-5′-dinitrate, can also normalizein vitrothe hypersensitive status of platelets taken from the patients with preeclampsia.

scholarly journals Integral model of noise-free radio communication lines

2018 ◽  
Vol 28 (4) ◽  
pp. 8-14
Author(s):  
S. V. Dvornikov ◽  
A. V. Pshenichnikov ◽  
S. S. Manaenko ◽  
I. N. Glukhikh
Keyword(s):  
Channel Model ◽  
Radio Channel ◽  
Functional Model ◽  
Integral Model ◽  
Practical Implementation ◽  
Radio Lines ◽  
Radio Communication ◽  
Statistical Parameters ◽  
Radio Equipment ◽  
Communication Lines

The development of radio equipment, which can be the basis for radio lines, that can counteract various kinds of interference, both natural and artificial, has always been given special attention. In this case, the main way to interfere with such radio links is, as a rule, the expansion of the signal base. However, this method does not take into account the nature of the destructive effects in conditions of limited frequency and energy resources of radio channels. In this connection, the studies focused on the development of functional models of noise-free radio communication lines, taking into account the density of signal energy distribution in a limited state space, are relevant. This paper considers the development of an integrated model of noise-free radio communication lines, which is characterized by the accounting of statistical parameters of the radio channel model. The approaches to the estimation of efficiency of the developed functional model of the radio lines based on the calculation of information transmission reliability are presented. Theoretical solutions were obtained by the methods of statistical radio engineering and the theory of telecommunications; they are generalized for the models of channels with variable parameters in conditions of nonrandom destructive influence. А positive effect of the practical implementation of the developed model is shown on the basis of analytical modeling.

Raman Thermometry of an Electro-Thermal Microactuator

2005 ◽  
Author(s):  
Sean P. Kearney ◽  
Leslie M. Phinney ◽  
Michael S. Baker
Keyword(s):  
Experimental Data ◽  
Spatial Resolution ◽  
Thermal Performance ◽  
Reasonable Agreement ◽  
Temperature Profiles ◽  
Measured Temperature ◽  
Scattering Technique ◽  
First Time ◽  
Computational Predictions ◽  
Better Than

Experimentally measured temperature profiles along the micron-scale beam of a working thermal actuator are reported for the first time. Using a surface Raman scattering technique, temperature measurements are obtained in a noncontact fashion with submicron spatial resolution and to within an uncertainty of better than ±10 K. The experimental data are used to validate computational predictions of the actuator thermal performance with reasonable agreement between the data and predicted temperatures.

Peculiarities of energetics calculations for satellite radio communication lines

2001 ◽  
Vol 7 (2-3) ◽  
pp. 33-34
Author(s):  
V.N. Kharchenko ◽  
◽  
A.A. Lavrut ◽  
Keyword(s):  
Radio Communication ◽  
Communication Lines

Determination of Size, Size Distribution, and Refractive Index of Dow Latexes EP-1358-38 by the Mie Scattering Method

1974 ◽  
Vol 52 (16) ◽  
pp. 1571-1582 ◽  
Author(s):  
F. Robillard ◽  
A. J. Patitsas
Keyword(s):  
Experimental Data ◽  
Refractive Index ◽  
Size Distribution ◽  
Mie Scattering ◽  
Refractive Indices ◽  
Scattering Method

Mie scattering at two different wavelengths was used to determine the size, the size distribution, and the refractive index of Dow latexes EP-1358-38. Computer calculated scattering curves were obtained for three size dispersions and three refractive indices. The experimental scattering curves were compared with the calculated curves in order to find the combination of refractive index and size distribution for which the agreement between the experimental data and the computed values was optimized.

Microdiffraction Patterns of Small Metallic Particles II; Theoretical Analysis

1982 ◽  
Vol 40 ◽  
pp. 668-669
Author(s):  
A. Gómez ◽  
P. Schabes-Retchkiman ◽  
M. José-Yacamán ◽  
T. Ocaña
Keyword(s):  
Experimental Data ◽  
Electron Diffraction ◽  
Theoretical Analysis ◽  
Size Range ◽  
Dynamical Theory ◽  
Metallic Particles ◽  
Splitting Effect

The splitting effect that is observed in microdiffraction pat-terns of small metallic particles in the size range 50-500 Å can be understood using the dynamical theory of electron diffraction for the case of a crystal containing a finite wedge. For the experimental data we refer to part I of this work in these proceedings.

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