scholarly journals An Experimental Study in Paired Comparison of Time Intervals

1930 ◽  
Vol 5 (3) ◽  
pp. 431-467
Author(s):  
S. Abe
Keyword(s):  
Experimental Study ◽  
Paired Comparison ◽  
Time Intervals

Viral Labyrinthitis — An Experimental Study

1975 ◽  
Vol 84 (2) ◽  
pp. 179-181 ◽  
Author(s):  
Collin S. Karmody
Keyword(s):  
Experimental Study ◽  
Rhesus Monkey ◽  
Rhesus Monkeys ◽  
Mumps Virus ◽  
Time Intervals ◽  
Histologic Changes

An attempt was made to produce viral labyrinthitis in the rhesus monkey. Rhesus monkeys are susceptible to the mumps virus. Nine animals were used. After removal of the stapes, the left oval windows were plugged with Gelfoam® soaked in a culture of live mumps virus; right oval windows were plugged with Gelfoam® soaked in killed cultures. Animals were sacrificed at different time intervals, postinfection. In eight of the nine animals there was seroconversion from negative to positive; however, none of the animals developed the histologic changes of viral labyrinthitis.

scholarly journals Monitoring the dustiness of the gymnasium

2019 ◽  
Vol 138 ◽  
pp. 01032
Author(s):  
N.E. Kalinina ◽  
M.N. Zhegalova ◽  
A.V. Skivko ◽  
E.V. Martynova
Keyword(s):  
Experimental Study ◽  
Air Quality ◽  
Indoor Air ◽  
Training Session ◽  
Integral Function ◽  
Dust Particles ◽  
External Respiration ◽  
Fine Dust ◽  
Time Intervals ◽  
Sports Type

This article presents an experimental study of the concentration of fine dust in a covered sports facility using the example of a sports gym using a HANDHELD-3016 aerosol particle counter. The monitoring data of indoor air was analyzed and graphically presented in graphs of the integral function of the distribution of dust particles over the diameters. The concentration of fine dust at different time intervals during the training of the sports section was compared. The dependence of the distribution of dust particles over the measurement heights on the intensity of the workout was studied. Recommendations on improving air quality in a sports-type room during classes were provided. Changes in the indicators of external respiration during the training session was analysed.

Experimental study of the regenerative potential of perineurium at a site of nerve transection

1981 ◽  
Vol 54 (1) ◽  
pp. 79-83 ◽  
Author(s):  
Jaudon E. Behrman ◽  
Robert D. Acland
Keyword(s):  
Experimental Study ◽  
Axonal Regeneration ◽  
Longitudinal Section ◽  
Experimental Models ◽  
Nerve Transection ◽  
Time Intervals ◽  
Content Type ◽  
Surrounding Connective Tissue ◽  
A Site ◽  
Fine Print

✓ A single fascicle of sciatic nerve was transected in a series of rats. The nerve was repaired by one of three experimental models: 1) perineurial suturing with bulging axons untrimmed, 2) perineurial suturing with bulging axons trimmed, and 3) perineurial suturing to produce a misaligned fascicle. Nerves were excised at 0 to 42 days and were examined in thin, longitudinal section. The complete absence of perineurial regeneration was observed at all time intervals and in all models. Regeneration of axons within the fascicle was disordered. Axonal regeneration extended into the surrounding connective tissue and infiltrated both the proximal and distal perineurium.

Multimodal Integration of Interval Duration: Temporal Ventriloquism or Changes in Pacemaker Rate?

2013 ◽  
Vol 1 (2) ◽  
pp. 189-215 ◽  
Author(s):  
Maria Dolores de la Rosa ◽  
Karin M. Bausenhart
Keyword(s):  
Paired Comparison ◽  
Multimodal Integration ◽  
Interval Duration ◽  
Bias Effect ◽  
Comparison Task ◽  
Time Intervals ◽  
Reproduction Task ◽  
Temporal Ventriloquism ◽  
Reproduction Method ◽  
Perceived Duration

Previous studies demonstrated that perceived duration of visual intervals is strongly influenced by conflicting auditory intervals. However, it remains unclear which mechanisms underlie this multimodal integration of interval duration. To investigate this issue, we employed a reproduction task with empty (Experiment 1) or filled (Experiment 2) intervals, and a paired-comparison task (Experiment 3) to assess perceived duration of visually marked intervals, which could be accompanied by auditory marked intervals with congruent (same) or conflicting (longer and shorter) durations. First, we predicted that conflicting auditory intervals would bias the perceived duration of visual intervals towards the duration of the auditory ones. Second, according to pacemaker-accumulator models, two different mechanisms might contribute to multimodal interval integration: changes in pacemaker rate or changes of the switch component based on temporal ventriloquism effects. In the former case, the multimodal bias effect should increase with increasing interval duration. In the latter case, the effect should remain constant across interval durations. All experiments showed a strong influence of auditory interval duration on perceived visual duration. In Experiments 1 and 2, this bias effect unexpectedly decreased with increasing interval duration, which might be due to limitations of the employed duration reproduction method. In Experiment 3, however, the observed multimodal bias effect remained clearly constant across all interval durations. This finding supports the idea that multimodal integration of conflicting time intervals is mainly determined by a temporal ventriloquism effect, which affects the switch component of a pacemaker-accumulator mechanism. In addition, we demonstrated that bimodal congruent intervals are perceived as longer than unimodal visual ones. For filled (Experiment 2), but not for empty (Experiment 1) intervals, this effect seems to be caused by an increase in pacemaker rate.

Rotational Characteristics of the Green Solar Corona: 1947-1991

1994 ◽  
Vol 144 ◽  
pp. 139-141 ◽  
Author(s):  
J. Rybák ◽  
V. Rušin ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
World Wide ◽  
Rotation Period ◽  
Original Data ◽  
Coronal Emission ◽  
Time Intervals ◽  
Data Set ◽  
The World ◽  
Coronal Emission Line ◽  
Homogeneous Data

AbstractFe XIV 530.3 nm coronal emission line observations have been used for the estimation of the green solar corona rotation. A homogeneous data set, created from measurements of the world-wide coronagraphic network, has been examined with a help of correlation analysis to reveal the averaged synodic rotation period as a function of latitude and time over the epoch from 1947 to 1991.The values of the synodic rotation period obtained for this epoch for the whole range of latitudes and a latitude band ±30° are 27.52±0.12 days and 26.95±0.21 days, resp. A differential rotation of green solar corona, with local period maxima around ±60° and minimum of the rotation period at the equator, was confirmed. No clear cyclic variation of the rotation has been found for examinated epoch but some monotonic trends for some time intervals are presented.A detailed investigation of the original data and their correlation functions has shown that an existence of sufficiently reliable tracers is not evident for the whole set of examinated data. This should be taken into account in future more precise estimations of the green corona rotation period.

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