Determination of the Shock Pressure Required to Initiate Detonation of an Acceptor in the Shock Sensitivity Test

ARS Journal ◽  
1962 ◽  
Vol 32 (1) ◽  
pp. 22-35 ◽  
Author(s):  
I. JAFFE ◽  
R. BEAUREGARD ◽  
A. AMSTER
Keyword(s):  
Shock Pressure ◽  
Sensitivity Test ◽  
Shock Sensitivity

DEVELOPMENT OF THE SMALL-SCALE SHOCK SENSITIVITY TEST (SSST)

2009 ◽  
Author(s):  
J. E. Felts ◽  
H. W. Sandusky ◽  
R. H. Granholm ◽  
Mark Elert ◽  
Michael D. Furnish ◽  
...  
Keyword(s):  
Sensitivity Test ◽  
Small Scale ◽  
Shock Sensitivity

scholarly journals Determination of equivalent circuit for PVDF shock-pressure gauges

1994 ◽  
Author(s):  
J. D. Kotulski ◽  
M. U. Anderson ◽  
B. C. Brock ◽  
J. Gomez ◽  
R. A. Graham ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Shock Pressure

Experimental Study on Propagation Characteristics of Gas Explosion Shock Wave while Pipe Turning

2014 ◽  
Vol 962-965 ◽  
pp. 919-925
Author(s):  
Yuan Fu ◽  
Ji Ren Wang ◽  
Bao Shan Jia
Keyword(s):  
Shock Wave ◽  
Attenuation Coefficient ◽  
Coal Mine ◽  
Shock Pressure ◽  
Gas Explosion ◽  
Turning Angle ◽  
Coal Mine Gas ◽  
Gas Disaster ◽  
Initial Shock

Coal mine gas disaster has the characteristic of destructive and complexity, in connection with the frequently of coal mine gas disaster, the paper studied on the propagation of gas explosion shock wave while pipe cross-sectional area changing from the experimental angle, designed the test system, the data of shock wave pressure when the pipe turning angle more or less than 90 degree was given, analyzed two situations: one was to analysis the influence of initial shock pressure effect on the attenuation coefficient under determination of pipeline turning angle; another was to analysis the influence of pipe turning angles effect on the attenuation coefficient under determination of initial shock wave overpressure, pointed out that the shock wave initial pressure and pipe turning angles were the two important factors which affect the shock wave overpressure attenuation coefficient. By comparison, the initial shock pressure had the larger influence. At last, the shock wave overpressure attenuation coefficient diversification formula was given when pipe turning angles was more or less than 90 degree.

scholarly journals Bacteriological and pathological investigation of goat lungs in Mymensingh and determination of antibiotic sensitivity

2014 ◽  
Vol 11 (2) ◽  
pp. 159-166 ◽  
Author(s):  
MM Rashid ◽  
MJ Ferdoush ◽  
M Dipti ◽  
P Roy ◽  
MM Rahman ◽  
...  
Keyword(s):  
Antibiotic Sensitivity ◽  
Sensitivity Test ◽  
Lung Lesions ◽  
E Coli ◽  
Pathological Conditions ◽  
Hemorrhagic Pneumonia ◽  
Antibiotic Sensitivity Test ◽  
Emphysematous Lung ◽  
Antibiotics Sensitivity

The foremost important goal of the present study was to investigate the bacteriological and pathological conditions in lungs of goats slaughtered in four different slaughter houses/places of Mymensingh Sadar, Mymensingh and in addition to it, antibiotic sensitivity test of commonly used antibiotics in Veterinary practices were performed on isolated bacteria. A total of 75 lungs of slaughtered goats were examined individually and out of which 20 affected lungs were collected for histopathology and bacterial isolation respectively from Mymensingh Sadar, Mymensingh in Bangladesh, during the period from January to May 2013.The lung lesions was grossly recorded 40% in goats (30 out of 75 lungs examined). Grossly, the lung lesions were categorized into (a) hemorrhages 35% (b) congestion 25% (c) hemorrhage and congestion 15% (d) emphysematous lung 15% and (e) hepatization in lung10%. In histopathology, lung lesions were categorized into (a) bronchopneumonia 30%, (b) pneumonia 25% (c) hemorrhagic pneumonia 20% (d) emphysema 15%, (e) purulent pneumonia 10%. Pasteurella sp. (15%) was isolated from the lung lesions of hemorrhagic pneumonia, E. coli. (25%) from bronchopneumonia and Staphylococcus sp. (40%) from purulent pneumonia, focal pneumonia and emphysema, and mixed infection (Staphylococcus sp. and E. coli) 20%. Finally antibiotics sensitivity test was performed on isolated bacteria to which ciprofloxacin was more powerful than others (penicillin, amoxicillin, streptomycin, nalidixic acid and kanamycin) tested and the second one was oxytetracyclin.DOI: http://dx.doi.org/10.3329/bjvm.v11i2.19142Bangl. J. Vet. Med. (2013).11(2): 159-166

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

International determination of the total motion of the pole

1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  
Secular Motion ◽  
The Future

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

Large-scale Motion of Solar Filaments

2000 ◽  
Vol 179 ◽  
pp. 205-208
Author(s):  
Pavel Ambrož ◽  
Alfred Schroll
Keyword(s):  
Magnetic Flux ◽  
Proper Motion ◽  
Time Scale ◽  
Large Scale ◽  
Accuracy Of Measurements ◽  
Solar Filaments ◽  
General Movement ◽  
Scale Motion ◽  
Velocity Scatter

AbstractPrecise measurements of heliographic position of solar filaments were used for determination of the proper motion of solar filaments on the time-scale of days. The filaments have a tendency to make a shaking or waving of the external structure and to make a general movement of whole filament body, coinciding with the transport of the magnetic flux in the photosphere. The velocity scatter of individual measured points is about one order higher than the accuracy of measurements.

Practical Realization of a Reference System for Earth Dynamics by Satellite Methods

1975 ◽  
Vol 26 ◽  
pp. 341-380 ◽  
Author(s):  
R. J. Anderle ◽  
M. C. Tanenbaum
Keyword(s):  
Reference Frame ◽  
Polar Motion ◽  
Pole Position ◽  
Control Points ◽  
Significant Information ◽  
Crustal Motion ◽  
Average Reference ◽  
Future Data ◽  
Existing Data

AbstractObservations of artificial earth satellites provide a means of establishing an.origin, orientation, scale and control points for a coordinate system. Neither existing data nor future data are likely to provide significant information on the .001 angle between the axis of angular momentum and axis of rotation. Existing data have provided data to about .01 accuracy on the pole position and to possibly a meter on the origin of the system and for control points. The longitude origin is essentially arbitrary. While these accuracies permit acquisition of useful data on tides and polar motion through dynamio analyses, they are inadequate for determination of crustal motion or significant improvement in polar motion. The limitations arise from gravity, drag and radiation forces on the satellites as well as from instrument errors. Improvements in laser equipment and the launch of the dense LAGEOS satellite in an orbit high enough to suppress significant gravity and drag errors will permit determination of crustal motion and more accurate, higher frequency, polar motion. However, the reference frame for the results is likely to be an average reference frame defined by the observing stations, resulting in significant corrections to be determined for effects of changes in station configuration and data losses.

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