Pulse counting-rate meter with an automatically variable time constant of its RC integrating circuit

1966 ◽  
Vol 9 (10) ◽  
pp. 1330-1332
Author(s):  
N. I. Denisov ◽  
V. S. Zhernov
Keyword(s):  
Time Constant ◽  
Counting Rate ◽  
Pulse Counting ◽  
Variable Time

Variable time constant of erbium-doped temperature sensor

2003 ◽  
Author(s):  
Gonzalo Paez ◽  
Victor Lopez ◽  
Marija Strojnik
Keyword(s):  
Time Constant ◽  
Temperature Sensor ◽  
Variable Time ◽  
Erbium Doped

Variable time-constant differentiation in chromatography

The Analyst ◽  
1984 ◽  
Vol 109 (3) ◽  
pp. 287 ◽  
Author(s):  
John C. Berridge ◽  
Keith S. Andrews
Keyword(s):  
Time Constant ◽  
Variable Time

INVESTIGATION OF NONLINEAR SYSTEMS CONTAINING STAGES WITH VARIABLE TIME CONSTANT

AIAA Journal ◽  
1963 ◽  
Vol 1 (10) ◽  
pp. 2445-2448
Author(s):  
YE. I. KHLYPALO
Keyword(s):  
Nonlinear Systems ◽  
Time Constant ◽  
Variable Time

Electron Beam-Induced Mass Loss in Freeze-Dried Tissue and Protein Samples

1985 ◽  
Vol 43 ◽  
pp. 470-471
Author(s):  
M.E. Cantino ◽  
M.K. Goddard ◽  
L.E. Wilkinson ◽  
D.E. Johnson
Keyword(s):  
Electron Beam ◽  
Salivary Gland ◽  
Mass Loss ◽  
Counting Rate ◽  
Dose Dependence ◽  
X Ray ◽  
Large Samples ◽  
Freeze Dried ◽  
Muscle Homogenate ◽  
Large Muscle

Quantification in biological x-ray microanalysis depends on accurate evaluation of mass loss. Although several studies have addressed the problem of electron beam induced mass loss from organic samples (eg., 1,2). uncertainty persists as to the dose dependence, the extent of loss, the elemental constituents affected, and the variation in loss for different materials and tissues. in the work described here, we used x-ray counting rate changes to measure mass loss in albumin (used as a quantification standard), salivary gland, and muscle.In order to measure mass loss at low doses (10-4 coul/cm2 ) large samples were needed. While freeze-dried salivary gland sections of the required dimensions were available, muscle sections of this size were difficult to obtain. To simulate large muscle sections, frog or rat muscle homogenate was injected between formvar films which were then stretched over slot grids and freeze-dried. Albumin samples were prepared by a similar procedure. using a solution of bovine serum albumin in water. Samples were irradiated in the STEM mode of a JEOL 100C.

The Effect of Sensori-Neural Hearing Loss on Threshold-Duration Functions

1968 ◽  
Vol 11 (4) ◽  
pp. 842-852 ◽  
Author(s):  
H. N. Wright
Keyword(s):  
Hearing Loss ◽  
Differential Diagnosis ◽  
Time Constant ◽  
Present Series ◽  
Auditory Disorders ◽  
Threshold Duration

Previous findings on the threshold for tones as a function of their duration have suggested that such functions may be systematically affected by sensori-neural hearing losses of cochlear origin. The present series of investigations was designed to explore this relation further and to determine also whether the amount of hearing loss present has any effect upon the results which are obtained. Preliminary studies were also carried out on a conductively impaired listener to indicate whether hearing losses of this type affect the threshold-duration function. The results indicate that the threshold-duration function is systematically affected by sensori-neural hearing losses of cochlear origin. This effect is manifested by a progressive shortening of the time constant relating threshold to duration and is not uniquely related to the amount of hearing loss present. The results obtained from the conductively impaired listener suggested that this type of hearing loss has no effect on the threshold-duration function, thereby implying that such functions may contribute significantly to the differential diagnosis of auditory disorders.

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