Browsing Irwana Nainggolan, Dr. by Author "Irwana, Nainggolan, Dr."

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    • Chitosan Light Sensor 

      Irwana, Nainggolan, Dr.; Che Mohd Ruzaidi, Ghazali, Prof. Assoc; Tulus Ikhsan, Nasution (Universiti Malaysia Perlis, 2010-01-07)
      Chitosan is a bio-polymer which has promising potential to be investigated as an alternative light sensing materials. It is produced by treating seafood waste, especially shells from crustaceans (shrimps, crabs, lobsters, ...

    • Chitosan pH Sensor 

      Irwana, Nainggolan, Dr.; Khairel Rafezi, Ahmad, Dr.; Ainnie Shakirah, Arif (Malaysian Invention and Design Society (MINDS), 2010-05-14)
      Chitosan is a natural biomaterial derived from the alkaline deacetylation of chitin that is present in many crustaceans, insects and mollusk shells. In this work, chitosan solution was deposited on a substrate using ...

    • Electrical properties of chitosan-ferredoxin film 

      Shantini, Devi; Irwana, Nainggolan, Dr.; Mohd Nazree, Derman, Dr.; Tulus Ikhsan, Nasution (American-Eurasian Network for Scientific Information (AENSI), 2013)
      In this study, chitosan was blended with ferredoxin to further improve the electrical properties of sensing film. Chitosan powder was dissolved in 2% of acetic acidand blended with ferredoxin. The mixture was subsequently ...

    • Mechanical properties of paper from oil palm pulp treated with chitosan from horseshoe crab 

      Agusnar, Harry; Irwana, Nainggolan, Dr.; Sukirman (AENSI Publisher All rights reserved, 2013-10)
      The application of chitosan as an additive in papermaking to improve the strength and water resistant properties is described. Unbleached sulphate pulp from oil palm stem was treated with chitosan. The chitosan was prepared ...

    • 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 ...

    • Water status detection by free-dipping method using chitosan based sensor 

      Tulus Ikhsan, Nasution; Irwana, Nainggolan, Dr.; M. N., Nasruddin; Maizal, Isnen; Oki, Handinata (American-Eurasian Network for Scientific Information (AENSI), 2010-10)
      A film sensor based on chitosan that is capable to evidence the different water status has been successfully fabricated by an electrochemical deposition technique. Main objective of this study is to utilize the chitosan ...