Main Performance Specifications of X-Ray Computer Tomographs as a Guide to Selecting the Best Tomograph Model for a Special Care Institution

AbstractX-ray diffraction methods are effective and practical for the quantitative analysis of the often forgotten amorphous material phase in sediments. The method reported is simple, employing normal oriented samples, and quartz or fluorite as a diluent. However, special care must be taken to prepare the samples properly, to ensure optimum conditions for diffraction, and to measure accurately the scattering bands.

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Profile of Patients Attended at the Genetic Service of a Special Care Institution in Brazil

Journal of Pharmacy and Pharmacology ◽

10.17265/2328-2150/2017.10.004 ◽

2017 ◽

Vol 5 (10) ◽

Author(s):

Cleiton Fantin ◽

Denise C. Benzaquem ◽

Julia Cavalcante do Carmo ◽

Vânia Mesquita Gadelha Prazeres

Keyword(s):

Special Care ◽

Genetic Service ◽

Care Institution

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Profile of Patients Attended at the Genetic Service of a Special Care Institution in Brazil

Journal of Pharmacy and Pharmacology ◽

10.17265/2328-2150/2017.010.004 ◽

2017 ◽

Vol 5 (10) ◽

Author(s):

Cleiton Fantin ◽

Denise C. Benzaquem ◽

Julia Cavalcante do Carmo ◽

Vânia Mesquita Gadelha Prazeres

Keyword(s):

Special Care ◽

Genetic Service ◽

Care Institution

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Performance Specifications for Diagnostic X-Ray Equipment

Radiology ◽

10.1148/120.2.409 ◽

1976 ◽

Vol 120 (2) ◽

pp. 409-412 ◽

Cited By ~ 1

Author(s):

William R. Hendee ◽

Raymond P. Rossi

Keyword(s):

X Ray ◽

Performance Specifications

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Performance Specifications For Diagnostic X-Ray Equipment

10.1117/12.958935 ◽

1980 ◽

Author(s):

William R. Hendee ◽

Raymond P. Rossi

Keyword(s):

X Ray ◽

Performance Specifications

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Space and Time Distribution of Hard X-Ray Emission in a Loop at the Beginning of a Flare

International Astronomical Union Colloquium ◽

10.1017/s0252921100025446 ◽

1994 ◽

Vol 144 ◽

pp. 275-277

Author(s):

M. Karlický ◽

J. C. Hénoux

Keyword(s):

Time Distribution ◽

Electron Bombardment ◽

Spatial Evolution ◽

Superthermal Electrons ◽

Flare Loop ◽

X Ray ◽

Superthermal Electron ◽

Flare Loops ◽

Chromospheric Evaporation ◽

Temporal And Spatial

AbstractUsing a new ID hybrid model of the electron bombardment in flare loops, we study not only the evolution of densities, plasma velocities and temperatures in the loop, but also the temporal and spatial evolution of hard X-ray emission. In the present paper a continuous bombardment by electrons isotropically accelerated at the top of flare loop with a power-law injection distribution function is considered. The computations include the effects of the return-current that reduces significantly the depth of the chromospheric layer which is evaporated. The present modelling is made with superthermal electron parameters corresponding to the classical resistivity regime for an input energy flux of superthermal electrons of 109erg cm−2s−1. It was found that due to the electron bombardment the two chromospheric evaporation waves are generated at both feet of the loop and they propagate up to the top, where they collide and cause temporary density and hard X-ray enhancements.

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Some Problems in Understanding the Solar Corona

International Astronomical Union Colloquium ◽

10.1017/s025292110002491x ◽

1994 ◽

Vol 144 ◽

pp. 1-9

Author(s):

A. H. Gabriel

Keyword(s):

Solar Corona ◽

Solar Atmosphere ◽

Theoretical Modelling ◽

Total System ◽

Major Advance ◽

X Ray ◽

Proper Perspective ◽

Space Observations

The development of the physics of the solar atmosphere during the last 50 years has been greatly influenced by the increasing capability of observations made from space. Access to images and spectra of the hotter plasma in the UV, XUV and X-ray regions provided a major advance over the few coronal forbidden lines seen in the visible and enabled the cooler chromospheric and photospheric plasma to be seen in its proper perspective, as part of a total system. In this way space observations have stimulated new and important advances, not only in space but also in ground-based observations and theoretical modelling, so that today we find a well-balanced harmony between the three techniques.

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