Browsing Khairel Rafezi Ahmad, Associate Prof Dr. by Author "Irwana, Nainggolan, Dr."
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Chitosan pH Sensor
Irwana, Nainggolan, Dr.; Khairel Rafezi, Ahmad, Dr.; Tulus Ikhsan, Nasution (Universiti Malaysia Perlis, 2010-01-07)Chitosan is a natural biomaterial derived from the alkaline deacetylation of chitin that is present in many crustaceans, insects and mollusk shells. -
The sensing mechanism and detection of low concentration acetone using chitosan-based sensors
Tulus Ikhsan, Nasution; Irwana, Nainggolan, Dr.; Sabar Derita, Hutagalung, Dr.; Khairel Rafezi, Ahmad, Dr.; Zainal Arifin, Ahmad (Elsevier B. V., 2013)This paper aims to discuss the usage of chitosan film sensors to detect acetone concentrations in human breath, in order to precisely diagnose diabetes mellitus in patients. Acetone concentration in the breath varies from ...