Daniel Prasetyo, Daniel
Department of Chemical Engineering, Faculty of Industrial Technology Institute of Technology Bandung, Jl. Ganesha 10, Bandung, 40132

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Manajemen Risiko Kecelakaan Kerja Berdasarkan OHSAS 18001:2007 di Subdep Perkakas PT Pindad (Persero) – Divisi Munisi Hermawan, Lindawati; Manalu, Sahala; Prasetyo, Daniel
JURNAL ILMU MANAJEMEN Vol 11, No 3 (2014): Agustus
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jim.v11i3.11783


Every manufacturing company faces safety risks in its production process. OHSAS 18001:2007 certification is required by international companies for ensuring that they have good safety and health management. The purpose of this research is to identify, assess, and define mitigation for safety risk in PT Pindad (Persero) – Munition Division’s Appliance Sub-Department based on OHSAS 18001:2007. The result shows that the safety risk factors in Appliance Sub-Departments are electricity shock, tools graze, tools cut, sprained limb, tools crush, dust and grindstone fragments, and cutting oil burst. Those risks happen because of human behavior, infrastructure, and working tool factors as shown in fishbone diagram. Most safety risks are included in low risk category and can be handled through administrative controls and personal protective equipment (PPE) usage. Some safety risks are included in medium risk category and need to be handled through engineering control and PPE usage.
Akubis: Jurnal Akuntansi dan Bisnis Vol. 3 No. 01 (2018): AKUBIS: Jurnal Akuntansi dan Bisnis
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (380.214 KB) | DOI: 10.37832/akubis.v3i01.38


This research was conducted to analyze the comparison of the results of the trading on the currency pair USD/JPY one hour after Non Farm Payroll?s release time using fundamental analysis,  Stochastic  Oscillator  technical  analysis,  ADX technical analysis, and combination of technical analysis during the period January 2015 to November 2016. Sampling technique used was the comparative analysis put forward by the Nazir (2005) where the purpose of the comparative analysis is to compare between the two groups in one or more variables. The research results showed that fundamental analysis has the return (in pips) which is the highest among the four others analysis. In the technical category, Stochastic Oscillator technical analysis has the highest number (in pips) of return than ADX technical analysis as well as combination of technical analysis.
Molecular Weight and Structural Properties of Biodegradable PLA Synthesized with Different Catalysts by Direct Melt Polycondensation Lee, Hyung Woo; Insyani, Rizki; Prasetyo, Daniel; Prajitno, Hermawan; Sitompul, Johnner P.
Journal of Engineering and Technological Sciences Vol 47, No 4 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (261.643 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.4.2


Production of biodegradable polylactic acid  (PLA)  from biomassbased lactic acid is widely studied for substituting petro-based plastics  or polymers. This study investigated PLA production from commercial lactic acid in a batch reactor by applying a direct melt polycondensation method with two kinds of catalyst,  γ-aluminium(III)  oxide  (γ-Al2O3) or  zinc oxide (ZnO),  in reduced pressure. The molecular weight of the synthesized PLA was determined by capillary viscometry and its structural properties were analyzed by functional group analysis using FT-IR. The yields of polymer production with respect to the theoretical conversion were 47% for γ-Al2O3 and 35% for ZnO. However, the PLA from ZnO had a higher molecular weight (150,600 g/mol) than that from γ-Al2O3 (81,400 g/mol). The IR spectra of the synthesized PLA from both catalysts using polycondensation show the same behavior of absorption peaks at wave numbers from 4,500 cm-1 to 500 cm-1, whereas the PLA produced by two other polymerization methods – polycondensation and ring opening polymerization –showed a significant difference in % transmittance intensity pattern as well as peak area absorption at a wave number of 3,500 cm-1 as –OH vibration peak and at 1,750 cm-1 as –C=O carbonyl vibrational peak.