Zobrazeno 1 - 10
of 13
pro vyhledávání: '"J. M. Ralston"'
Previously, K. Bakhtar and E. Sagal [ibid. vol. 17, pp. 4-11, 2002] made remarkable claims for the performance of the Bakhtar Associates ground-penetrating radar (GPR) in detecting and classifying buried unexploded ordnance (UXO). In this article, we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc0f15c29b6ca197c7dd4df3b54e6a68
https://zenodo.org/record/1262225
https://zenodo.org/record/1262225
Publikováno v:
IEEE Transactions on Antennas and Propagation. 44:627
Multipath interference data were obtained at a frequency of 95 GHz over pathlengths of 100-250 m by measuring height-gain interference patterns over various types of terrain. Data were collected over grass, lake, ice, snow, concrete, asphalt, and gra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ece2cef6b64d75f581746f378857208
https://doi.org/10.1109/8.496248
https://doi.org/10.1109/8.496248
Autor:
A. S. Jordan, J. M. Ralston
Publikováno v:
Journal of Applied Physics. 47:4518-4527
The long‐term degradation of GaP red LED’s has been analyzed in terms of a diffusion model. In this paper, the reduction in electroluminescent efficiency (ηt) during aging time (t) at elevated junction temperatures (Tj) and under forward current
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac2373e06f74c5e8107c3c0bdd46a614
https://doi.org/10.1063/1.322423
https://doi.org/10.1063/1.322423
Autor:
J. W. Mann, J. M. Ralston
Publikováno v:
Journal of Applied Physics. 50:3630-3637
Experimental studies have been performed on several aspects of the degradation of electroluminescent quantum efficiency in ZnO‐doped GaP light‐emitting diodes. The dependence of degradation on stress temperature, stress current (experienced durin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca549cbe4b10cbebc88f7d7a5edd3421
https://doi.org/10.1063/1.326313
https://doi.org/10.1063/1.326313
Autor:
S. F. Lucks, G J Buck, J.A. Reynoldson, J. R. Bolton, A M Stenhouse, J M Ralston, N S Stenhouse
Publikováno v:
Australian Veterinary Journal. 65:1-5
A survey of the concentrations of cortisol in blood and urine samples taken from thoroughbred and standardbred horses after racing is presented. Statistical analysis showed the only significant difference between thoroughbred and standardbred horses
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::943cfaaca9a581a2b09a3a9bf1d726c1
https://doi.org/10.1111/j.1751-0813.1988.tb14919.x
https://doi.org/10.1111/j.1751-0813.1988.tb14919.x
Publikováno v:
Journal of Applied Physics. 47:1583-1588
This paper reports evidence of a degradation‐induced defect structure in green GaP light‐emitting diodes (LED’s). The defect structure in undegraded diode material has been characterized by transmission electron microscopy (TEM). The main defec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::681aae0e8ebb176b0f30b59f4bf38059
https://doi.org/10.1063/1.322774
https://doi.org/10.1063/1.322774
Autor:
R. K. Chang, J. M. Ralston
Publikováno v:
Opto-electronics. 1:182-188
The insertion of a multi-photon absorber within a laser cavity has practical importance in providing stabilised laser amplitude and variable pulse duration. We report the relative non-linear absorption coefficients of semiconductors Si, CdSe, CdTe, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4427dad7efa5e3b1a2a79c86ba69653
https://doi.org/10.1007/bf01834681
https://doi.org/10.1007/bf01834681
Autor:
J. M. Ralston
Publikováno v:
Journal of Applied Physics. 44:2635-2641
The light‐current‐voltage (LIV) characteristics of both red‐ and green‐emitting GaP p‐n junctions have been analyzed in detail at room temperature. Device current has been quantitively and accurately decomposed into components corresponding
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3df4b36c22102591a382e006a91dc407
https://doi.org/10.1063/1.1662626
https://doi.org/10.1063/1.1662626
Autor:
Richard K. Chang, J. M. Ralston
Publikováno v:
Physical Review B. 2:1858-1862
The absolute spontaneous-Raman-scattering efficiency and linewidth of the 521-${\mathrm{cm}}^{\ensuremath{-}1}$ optical mode of silicon have been measured at 77 K using a continuous laser (Nd in yttrium aluminum garnet) operating at 1.064 \ensuremath
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5327401be84537b5cd15d2f80c95ea4f
https://doi.org/10.1103/physrevb.2.1858
https://doi.org/10.1103/physrevb.2.1858
Autor:
J. M. Ralston
Publikováno v:
Review of Scientific Instruments. 43:876-878
An apparatus is described which measures quantum efficiency (or power or luminescent efficiency) in electro‐luminescent devices. The device test current is pulsed and may be varied over a 100–1 dynamic range. Efficiency measurements are self‐no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed0d8b421832dc66fd735df06d6d7faa
https://doi.org/10.1063/1.1685794
https://doi.org/10.1063/1.1685794