Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Tay Ching En Marcus"'
Autor:
Michael David, Patrick Enenche, Caroline O. Alenoghena, Mohd Haniff Ibrahim, Sevia M. Idrus, Tay Ching En Marcus
Ozone gas is a greenhouse gas. Accurate measurement of its concentration is dependent on the right value of the ozone gas absorption cross-section. In the literature, discrepancies and inconsistencies have been however linked with ozone gas absorptio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2659::71db7d3517fe160edb757863ae775cff
https://zenodo.org/record/7736005
https://zenodo.org/record/7736005
Publikováno v:
Sensors and Actuators B: Chemical. 229:528-533
In ultraviolet absorption spectroscopy, sensitivity of ozone concentration measurement is low when transmittance is too high or too low. This is because transmittance of light influences sensitivity of measurement. Here, we derive a new equation base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a7c107444dd666f267104c2354ff329
https://doi.org/10.1016/j.snb.2016.02.013
https://doi.org/10.1016/j.snb.2016.02.013
Publikováno v:
Sensors and Actuators B: Chemical. 221:570-575
Long optical path length and strong ozone absorption wavelength are generally applied for high sensitivity ozone concentration measurement in ultraviolet absorption spectroscopy. However, high sensitivity of measurement cannot be achieved when the se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bcf34d63bd03512abe1fa9e68cdd206
https://doi.org/10.1016/j.snb.2015.07.005
https://doi.org/10.1016/j.snb.2015.07.005
Autor:
Mohd Rashidi Salim, Maslina Yaacob, Mohd Haniff Ibrahim, Nor Hafizah Ngajikin, Michael David, Zolkafle Buntat, Nabihah Hussin, Tay Ching En Marcus, Sevia Mahdaliza Idrus, Asrul Izam Azmi
Publikováno v:
Microwave and Optical Technology Letters. 57:1013-1016
Beer–Lambert law deviation is often observed. Here, we propose alternative wavelength 279.95 nm for ozone concentration measurement between 357 and 971 μL L−1 to preserve linearity. Sensor loses linearity below transmittance 0.2165, as sensor ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69d62ef58d40a7c0c57248d239002b33
https://doi.org/10.1002/mop.29005
https://doi.org/10.1002/mop.29005
Autor:
Tay Ching En Marcus, Maslina Yaacob, Sevia Mahdaliza Idrus, Nor Hafizah Ngajikin, Mohd Rashidi Salim, Mohd Haniff Ibrahim, Zolkafle Buntat, Asrul Izam Azmi, Nabihah Hussin, Michael David
Publikováno v:
Applied Mechanics and Materials. 735:260-264
Accurate value of absorption cross section is required for correct measurement of ozone concentration. Measurement of ozone has been done at different altitude and pressure. However, previous work has failed to establish significant relation between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a93caae0627ce5ba140f9b6c256b2558
https://doi.org/10.4028/www.scientific.net/amm.735.260
https://doi.org/10.4028/www.scientific.net/amm.735.260
Autor:
Michael David, Enenche Patrick, Tay Ching En Marcus, Sevia Mahdaliza Idrus, Mohd Haniff Ibrahim, A.O. Caroline
Publikováno v:
TELKOMNIKA (Telecommunication Computing Electronics and Control). 16:618
Inconsistencies in the absorption cross section of ozone have been observed. Hence, for accurate measurement, we have reported the combined effects of varying optical path-length and temperature on the ozone gas absorption cross section (OACS) at 334
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9443277a5102e41f5a60a63618e60818
https://doi.org/10.12928/telkomnika.v16i2.8577
https://doi.org/10.12928/telkomnika.v16i2.8577
Autor:
Azian Abdul Aziz, Nor Hafizah Ngajikin, Michael David, Sevia Mahdaliza Idrus, Asrul Izam Azmi, Tay Ching En Marcus, Mohd Haniff Ibrahim, Mohd Rashidi Salim, Maslina Yaacob
Publikováno v:
Jurnal Teknologi. 73
There has been a surge in ozone gas relevance in agriculture, environment and in the industry. This has resulted in increased research activities in areas involving ozone gas generation, application, safety and sensing. In this manuscript we present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97e6dc28faa3583ba0da7654f3bc9333
https://doi.org/10.11113/jt.v73.4402
https://doi.org/10.11113/jt.v73.4402
Autor:
Mohd Rashidi Salim, Nabihah Hussin, Tay Ching En Marcus, Mohd Haniff Ibrahim, Micheal David, Nor Hafizah Ngajikin, Asrul Izam Azmi, Maslina Yaacob
Publikováno v:
Jurnal Teknologi. 73
A wide range analysis of spectroscopic ozone gas sensor is conducted in order to obtain specific affected wavelength when 616 ppm to 999 ppm of ozone concentration is released into 5 cm gas cell of transmission type. It is observed that by employing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dabbb4f562afd1b38632322f1f7fdb52
https://doi.org/10.11113/jt.v73.4247
https://doi.org/10.11113/jt.v73.4247
Autor:
Nabihah Hussin, Asrul Izam Azmi, Gerard Dooly, Tay Ching En Marcus, Micheal David, Mohd Haniff Ibrahim, Nor Hafizah Ngajikin, Maslina Yaacob, Mohd Rashidi Salim, Elfed Lewis
Publikováno v:
Jurnal Teknologi. 73
peer-reviewed The optimized structure of CO2gas sensor has been simulated consists of low cost components and easy for fabrication. The structure is based on reflective type gas cell using aluminium material. Optimization was made on radius of alumin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abd79c2075e34ca3b099869b386e71ad
https://doi.org/10.11113/jt.v73.4248
https://doi.org/10.11113/jt.v73.4248
Autor:
Michael David, Tay Ching En Marcus, Mohd Haniff Ibrahim, Sevia Mahdaliza Idrus, Nor Hafizah Ngajikin, Maslina Yaacob, Nabihah Hussin, Mohd Rashidi Salim, Asrul Izam Azmi
Publikováno v:
TELKOMNIKA Indonesian Journal of Electrical Engineering. 13
Laboratory design of an ozoneconcentration regulator which is build on the theory of continuity equation forgas flow in parallel pipes in conjunction with the ozone elimination potentialsof an ozone destructor is presented. At an initial oxygen flow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2419cebd161f4b0552d1bc76020d88dd
https://doi.org/10.11591/telkomnika.v13i2.6952
https://doi.org/10.11591/telkomnika.v13i2.6952