Simultaneous measurements of sunspot umbral oscillations in the photosphere, chromosphere, and transition region

1987 ◽  
Vol 312 ◽  
pp. 457 ◽  
Author(s):  
John H. Thomas ◽  
Bruce W. Lites ◽  
Joseph B. Gurman ◽  
Edwin F. Ladd
Keyword(s):  
Transition Region ◽  
Simultaneous Measurements ◽  
Umbral Oscillations

Effects of Ambipolar Diffusion on Prominence Thread Models

1994 ◽  
Vol 144 ◽  
pp. 315-321 ◽  
Author(s):  
M. G. Rovira ◽  
J. M. Fontenla ◽  
J.-C. Vial ◽  
P. Gouttebroze
Keyword(s):  
Energy Balance ◽  
Transition Region ◽  
Ambipolar Diffusion ◽  
Line Profiles ◽  
Balance Equations ◽  
Model Calculations ◽  
Partial Frequency ◽  
Frequency Redistribution ◽  
Partial Frequency Redistribution ◽  
Theoretical Structure

AbstractWe have improved previous model calculations of the prominence-corona transition region including the effect of the ambipolar diffusion in the statistical equilibrium and energy balance equations. We show its influence on the different parameters that characterize the resulting prominence theoretical structure. We take into account the effect of the partial frequency redistribution (PRD) in the line profiles and total intensities calculations.

The Clearance of 133Xenon from the Liver Intraportal Injection in Man

1965 ◽  
Vol 05 (03) ◽  
pp. 241-245 ◽  
Author(s):  
K.-F. Aronsen ◽  
B. Ericsson ◽  
A. Fajgelj ◽  
S.-E. Lindell
Keyword(s):  
Blood Flow ◽  
Portal Vein ◽  
Hepatic Blood Flow ◽  
Scintillation Detectors ◽  
Disappearance Rate ◽  
Simultaneous Measurements

Summary 133Xe dissolved in saline was injected into the portal vein in man. Hepatic blood flow was calculated from the disappearance rate of 133Xe recorded with scintillation detectors placed over the liver. The results are discussed and related to simultaneous measurements of the pressure in the portal vein.

Double Beam Spectrophotometer for Simultaneous Measurements of the Upwelling Sea Radiance and the Incident See Irradiance

2019 ◽  
pp. 105-110
Author(s):  
Mikhail Yongon Lee ◽  
Sergei V. Fedorov
Keyword(s):  
Spectral Characteristics ◽  
Sea Surface ◽  
Input Port ◽  
Silicon Photodiode ◽  
New Approach ◽  
Surface Irradiance ◽  
Simultaneous Measurements ◽  
Double Beam

The article describes the structure and the operation principle of the spectrophotometer developed on the basis of a compact rapid monochromator with one input port and two output ports and a radiometric unit where upwelling radiation radiance and sea surface irradiance channels are located. A new approach to measurements of spectral characteristics of upwelling radiation of sea based on combination of advantages of a double beam photometer with a photomultiplier and a directreading photometer with a highstability silicon photodiode for its absolute adjustment in energy units is implemented.

SPECTRAL ANALYSIS OF NOISE IN POOL BOILING IN THE TRANSITION REGION

1974 ◽  
Author(s):  
V. I. Tolubinsky ◽  
A.M. Kltchigin ◽  
S.G. Povsten
Keyword(s):  
Spectral Analysis ◽  
Transition Region ◽  
Pool Boiling
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