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All Journal Indonesian Journal of Biotechnology Jurnal Kimia Riset Journal of Energy, Mechanical, Material and Manufacturing Engineering Jurnal Teknik Mesin Jurnal Teknik Mesin Indonesia Journal of Integrated and Advanced Engineering (JIAE) Automotive Experiences Journal of Biomedical Science and Bioengineering International Journal of Engineering Continuity Poltekita: Jurnal Ilmu Kesehatan
Yudan Whulanza
Departemen Teknik Mesin, Fakultas Teknik, Universitas Indonesia
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology

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Journal : Journal of Biomedical Science and Bioengineering

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Electrochemical Detection and Spectrophotometry of Dopamine using Commercial Screen-Printed Electrodes Eunike Thirza Hanita Christian; Basari Basari; Siti Fauziyah Rahman; Yudan Whulanza
Journal of Biomedical Science and Bioengineering Vol 2, No 1 (2022)
Publisher : Center for Biomechanics, Biomaterials, Biomechantronics and Biosignal Processing (CBOIM3S)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jbiomes.2022.v2i1.7-13

Abstract

Lab-on-chip is miniaturized devices integrated into a chip which can run one or several analyses which are usually done in laboratory settings, such as biochemical detection. Dopamine is an important neurotransmitter which regulates hormones, control of movement, emotion, attention, and motivation. Excess, lack, and dysregulation of dopamine could cause numbers of diseases and disorders. The technique used to measure and evaluate dopamine usually are expensive to run, require longer time to run, require some technical qualification to run, require expensive equipments, and some are invasive to do. These are the reasons why a lab-on-chip system is needed to make the detection of dopamine concentration faster, easier, and more portable. This paper studied the accuracy of using electrochemical detection to measure the concentration of liquid specimens of dopamine compared to uv/vis spectrophotometry. Electrochemical detection method named cyclic voltammetry was chosen for this study. The hypothesis for this study is that both peak current (ip) and absorbance positively correlate to concentration, therefore both could be used with minimal error margin. For this study, the peak current (ip) and absorbance of different concentrations of liquid specimen of dopamine are measured, and its regression were observed. It was shown that the concentration of liquid specimens of dopamine is linear to both anodic peak current (ipa) and absorbance. Due to the high R2 values of 0.9883, electrochemical detection could be used and implemented to detect dopamine concentration for application of lab-on-chip, as it is more portable and requires less volume of sample compared to spectrophotometry.
Experimental and Numerical Evaluation of Mechanical Properties for Carbon Fiber Reinforced Epoxy LY5052 Composite for Prosthesis Structures Mahfud Ibadi; Yudan Whulanza; Herry Purnomo
Journal of Biomedical Science and Bioengineering Vol 2, No 1 (2022)
Publisher : Center for Biomechanics, Biomaterials, Biomechantronics and Biosignal Processing (CBOIM3S)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jbiomes.2022.v2i1.18-22

Abstract

Carbon Fiber Reinforced Epoxy is one of the materials that is widely used in the manufacture of phosthesis structures. In this study, the carbon fiber used carbon-kyoto type plain weave while the epoxy matrix was LY5052. The maximum stress (s) from the tensile test is 537.15 MPa. Furthermore, tensile test simulation with Finite element analysis simulation using Abaqus software, in the process the selection of mesh through input sizing control determines the accuracy of the results. The simulation results are 523.3 MPa when compared to the experiment the difference is 2.58%
Co-Authors Adella Josephin Adin, Mehmet Şükrü Baiquni, Mohamad Basari Basari Budi Anna Keliat Budiman, Alexander Christantho David N Vicarneltor Dharmesta, Jefri Dhira, Pandya Eunike Thirza Hanita Christian Galih Rineksa Gatot Prayogo Haryadi, Deni Herry Purnomo Herry Purnomo Ibadi, Mahfud Irfan Martiansyah Jos Istiyanto Lischer, Kenny Mahfud Ibadi Mahfud Ibadi Misri Gozan Muhammad Imam Surya Nur Agustini Praswasti Pembangun Dyah Kencana Wulan Setiawati, Santun Siti Fauziyah Rahman Siti Fauziyah Rahman Sugeng Supriadi, Sugeng Sumarsono, Danardono Agus Sunarto Kaleg Tito Sitanggang, Tito Tresna P. Soemardi Uda Hashim Valmelina, Ersyi Arini Wanda , Dessie Wiguna Rahman