Experimental techniques for thermal product determination of coaxial surface junction thermocouples during short duration transient measurements

2016 ◽  
Vol 103 ◽  
pp. 327-335 ◽  
Author(s):  
Sumit Agarwal ◽  
Niranjan Sahoo ◽  
Rishikesh Kumar Singh
Keyword(s):  
Short Duration ◽  
Experimental Techniques ◽  
Thermal Product ◽  
Transient Measurements

scholarly journals Bestimmung seltener Starkniederschläge kurzer Dauer - Fallbeispiele im Vergleich mit den schweizerischen Starkniederschlagskarten | Determination of Rare Rainfall Intensities of Short-Duration - Case Studies Compared with Maps of Intense Rainfall in Switzerland

1999 ◽  
Vol 150 (6) ◽  
pp. 209-218 ◽  
Author(s):  
Felix Forster ◽  
Walter Baumgartner
Keyword(s):  
Case Studies ◽  
Short Duration ◽  
Extreme Value ◽  
Extreme Value Statistics ◽  
Intense Rainfall

The two maps of intense rainfall in the Hydrological Atlas of Switzerland (1992, 1997) are compared to data of an evaluation of extreme value statistics. The results are transferred to recommendations for practioners.

Cosmic X-ray observations

1969 ◽  
Vol 313 (1514) ◽  
pp. 301-315 ◽  
Keyword(s):  
Lower Limit ◽  
Short Duration ◽  
Spectral Information ◽  
X Ray ◽  
Proportional Counters ◽  
Position Data ◽  
Intense Source

In the first few years following the discovery of discrete cosmic X-ray sources, about three dozen objects were detected (Friedman, Byram & Chubb 1967; Fisher, Johnson, Jordan, Meyerott & Acton 1966; Clark et al . 1965; Gursky, Gorenstein & Giacconi 1967; Bradt, Naranan, Rappaport & Spada 1968; Cooke, Pounds, Stewardson & Adams 1967; Giacconi, Gorenstein, Gursky & Waters 1967; Chodil et al . 1967 b ). They represent a brightness range of about a thousandfold from the most intense source, Sco XR–1, ca . 5 x 10 -10 J m -2 s -1 , to the weakest sources at a few times 10 -13 J m -2 s -1 . The lower limit of detectability is inherent in the short duration of rocket flights and the limiting size of instrumentation that can be carried in vehicles like Aerobee, Skylark and Nike Apache. As a result of this instrumentation barrier, the pace of discovery has now slowed down considerably, and the next great surge in detection of new sources will have to await the use of satellites. Spectral information is still based on the relatively crude resolution of proportional counters and scintillation counters, so that no conclusive determination of thermal or non-thermal mechanisms is yet possible. Because position data are obtained with the use of mechanical collimators, accuracies of a few minutes of arc are the best that have been achieved, and only for a few sources. As a consequence, only a few X-ray objects are reliably identified with optical and radio counterparts.

scholarly journals Concrete propensity to fire spalling: testing and observations

2018 ◽  
Vol 163 ◽  
pp. 02004 ◽  
Author(s):  
Izabela Hager ◽  
Katarzyna Mróz ◽  
Tomasz Tracz
Keyword(s):  
Cement Paste ◽  
Experimental Studies ◽  
Experimental Techniques ◽  
Concrete Slabs ◽  
Cement Type ◽  
Material Parameters ◽  
Constant Content

This article presents results of fire spalling tests on small concrete slabs and studies of material parameters that may increase its occurrence. Experimental techniques enabling to study and determination of material features are presented and discussed. Experimental studies on spalling behaviour of elements were carried out on seven different concrete mixes with constant content of cement paste and mortar. Research aimed at determining influence of the following parameters: w/c ratio (0.30; 0.45; 0.60), cement type (CEM I, CEM III) and type of aggregates (riverbed gravel, granite, basalt) on fire concrete spalling. Paper discusses also the influence of cold rim that forms while testing slab-like element is subjected to one-side heating.

Application of Models to Determination of Nutrient Requirements: Experimental Techniques Employing Tracers

1992 ◽  
Vol 122 (suppl_3) ◽  
pp. 701-705
Author(s):  
C. F. Ramberg ◽  
C. R. Krishnamurti ◽  
D. Peter ◽  
J. E. Wolff ◽  
R. C. Boston
Keyword(s):  
Experimental Techniques ◽  
Nutrient Requirements
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