Zobrazeno 1 - 10
of 50
pro vyhledávání: '"John Leis"'
Publikováno v:
IET Science, Measurement & Technology, Vol 18, Iss 6, Pp 271-279 (2024)
Abstract The problem of crystal ice formation inside aircraft turbine engines is well‐documented, and poses a significant risk to safety. The problem is not only one of power loss in flight, but the very real possibility that a flame‐out event co
Externí odkaz:
https://doaj.org/article/1bef46febf344030b913b05ce468df21
Publikováno v:
Healthcare Technology Letters (2018)
A computed tomography (CT) biopsy is a radiological procedure which involves using a needle to withdraw tissue or a fluid specimen from a lesion of interest inside a patient's body. The needle is progressively advanced into the patient's body, guided
Externí odkaz:
https://doaj.org/article/63d9f8e4d4d44720a5ca17edcaf0dea2
Autor:
John Leis, Christopher M. James, Byrenn Birch, Matthew B. Thompson, C. Lobsey, Allan Payne, Steven F.T. Apirana, Fabian Zander, David R. Buttsworth, Lachlan Noller, Duncan J. Wright
Publikováno v:
Journal of Spacecraft and Rockets. 58:1915-1919
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d1ce4b4ec484daf2cf05edb17b558d4
https://doi.org/10.2514/1.a35062
https://doi.org/10.2514/1.a35062
Publikováno v:
Flow Measurement and Instrumentation. 87:102212
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3af162130982712ffe69e1b1fd0942c
https://doi.org/10.1016/j.flowmeasinst.2022.102212
https://doi.org/10.1016/j.flowmeasinst.2022.102212
Autor:
John Leis
Publikováno v:
ICSPCS
Synchronous detection is an approach used to detect very low level signals within noise when the excitation signal is precisely known or generated locally. In the instrumentation and measurement field, this is generally termed lockin detection and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc1e4053d3fd0a6a1a6d5f53f5eaad29
https://doi.org/10.1109/icspcs50536.2020.9310036
https://doi.org/10.1109/icspcs50536.2020.9310036
Autor:
John Leis, David R. Buttsworth
Publikováno v:
IEEE Transactions on Industrial Electronics. 65:4338-4346
Detection of gases in industrial contexts is of great importance for ensuring safety in storage and transport in order to limit atmospheric pollution and precisely control industrial and agricultural processes. Although chemical sensors are in widesp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce64510849eeaf4ffe74124b0cc9f1bf
https://doi.org/10.1109/tie.2017.2762636
https://doi.org/10.1109/tie.2017.2762636
Publikováno v:
Analytical Chemistry. 90:5973-5976
Modeling the propagation of light from LED sources is problematic since the emission covers a broad range of wavelengths and thus cannot be considered as monochromatic. Furthermore, the lack of directivity of such sources is also problematic. Both at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bebdd1be920a8ca7df76099816741916
https://doi.org/10.1021/acs.analchem.8b01295
https://doi.org/10.1021/acs.analchem.8b01295
Autor:
David R. Buttsworth, John Leis
Publikováno v:
IEEE Transactions on Industrial Electronics. 64:7392-7398
One technique which may be employed in certain types of sensing application is the phase-sensitive or lock-in method. Since this method essentially trades off longer measurement time for a greater accuracy, it is sometimes necessary to capture sample
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2d61906cde0d7c6f0a5bcecfe6c9767
https://doi.org/10.1109/tie.2016.2638798
https://doi.org/10.1109/tie.2016.2638798
Autor:
Khalid Saleh, Matthew McGilvray, John Leis, David R. H. Gillespie, Ramiz Saeed, David R. Buttsworth
The partial melting of ingested ice crystals can lead to ice accretion in aircraft compressors, but accurately measuring the relatively small fraction of liquid water content in such flows is challenging. Probe-based methods for detecting liquid wate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6724fc7067133ff242676d9cc7576fc
https://doi.org/10.4271/2019-01-1930
https://doi.org/10.4271/2019-01-1930
Autor:
John Leis, David R. Buttsworth
Publikováno v:
IEEE Transactions on Industrial Electronics. 63:1813-1821
Methane is the primary constituent of natural gas and is used in many industrial processes. Detection of the presence of methane is important, especially before it reaches explosive concentrations. Earlier sensor types are based on catalytic adsorpti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a226705f007fc3ab4b65f742d1c615a
https://doi.org/10.1109/tie.2015.2495292
https://doi.org/10.1109/tie.2015.2495292