Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Alan H. Lettington"'
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 5:S103-S110
This paper discusses various passive millimetre-wave imaging systems. It includes sources of radiation, atmospheric transmission and a brief summary of their various applications. This is followed by a review of methods for detecting millimetre-wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd777918043dc3e6c6e7d2adaa51a128
https://doi.org/10.1088/1464-4258/5/4/363
https://doi.org/10.1088/1464-4258/5/4/363
Publikováno v:
Journal of Modern Optics. 47:1435-1446
Current performance measures for infrared imagers are applicable to linear mechanically scanned systems but not to those with focal plane arrays of detector elements, because these are nonlinear due to aliasing. The performance of an imager affects t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::874edd14e8be46f5e16eef2ef27e8df9
https://doi.org/10.1080/09500340008235114
https://doi.org/10.1080/09500340008235114
Publikováno v:
Journal of Modern Optics. 47:931-938
It is known that the distribution of intensity gradients along separate horizontal and vertical directions in an image of a general scene often has a sharp peak with a long tail. This property, can be described by a Lorentzian probability function, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a80f660a5e6f7dbd1205a3b0abfcfa7d
https://doi.org/10.1080/09500340008235101
https://doi.org/10.1080/09500340008235101
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 120:514-518
Infrared (IR) spectra of the exhaust emissions from a static gas turbine engine have been studied using Fourier Transform (FT) spectroscopic techniques. Passive detection of the infrared emission from remote (range {approximately}3 m) hot exhaust gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::699d8fe3227ee37d0c91d4ea5549c7df
https://doi.org/10.1115/1.2818175
https://doi.org/10.1115/1.2818175
Autor:
Alan H. Lettington
Publikováno v:
Carbon. 36:555-560
There is considerable interest in growing diamond layers and thin films for a wide range of applications. Some of these thin film requirements can be met already using existing diamond-like carbon coatings. This paper reviews the use of diamond-like
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2f4968de7bd7d6efbf998845709ccb4
https://doi.org/10.1016/s0008-6223(98)00062-1
https://doi.org/10.1016/s0008-6223(98)00062-1
Publikováno v:
Journal of Materials Science: Materials in Medicine. 6:581-589
Diamond-like carbon (DLC) films have been deposited by RF plasma-assisted glow discharge CVD on AISI 304 stainless steel and Ti−6Al−4V substrates. A substrate plastic straining technique (to measure the strength and adhesion of the coating) and e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef191ed0d40508721b06b1a2766434f0
https://doi.org/10.1007/bf00121282
https://doi.org/10.1007/bf00121282
Publikováno v:
Measurement Science and Technology. 6:1236-1241
Techniques for obtaining quantitative values of the temperatures and concentrations of remote hot gaseous effluents from their measured passive emission spectra have been examined in laboratory experiments and on field trials. These emission spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::613fa61f17601b072ed021735ca72231
https://doi.org/10.1088/0957-0233/6/9/002
https://doi.org/10.1088/0957-0233/6/9/002
Autor:
Alan H. Lettington, Q.H. Hong
Publikováno v:
Journal of Modern Optics. 42:1367-1376
The distribution of edge values for an image of a general scene often has a sharp peak with a long tail. This property, which can be well described by a Lorentzian probability function, has been used to develop an efficient nonlinear image restoratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::950e95bc2e6473b2c93d2da1b5a1bb73
https://doi.org/10.1080/09500349514551201
https://doi.org/10.1080/09500349514551201
Publikováno v:
Diamond and Related Materials. 4:857-861
In vitro studies have been carried out using three cell culture lines, to investigate the biocompatibility of diamond-like carbon (DLC) coated discs. The thin film samples have been produced on glass substrates with an intermediate layer of amorphous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adc50feb24c40ab38c682bd4234e09c4
https://doi.org/10.1016/0925-9635(94)05280-8
https://doi.org/10.1016/0925-9635(94)05280-8
Publikováno v:
Diamond and Related Materials. 4:852-856
Diamond-like carbon (DLC) films deposited by standard r.f. glow discharge CVD were exposed to various fluids (distilled water, phosphate-buffered saline (PBS) solution and 40% serum in PBS) to study the effect of this exposure on the stability of DLC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bace606c071a034d367edb31c9a0b19b
https://doi.org/10.1016/0925-9635(94)05255-7
https://doi.org/10.1016/0925-9635(94)05255-7