9 articles in this issue
Asep Bayu Dani Nandiyanto,Riezqa Andika,Muhammad Aziz,Lala Septem Riza10.17509/ijost.v3i2.12752 Abstract views: 962 PDF downloads: 759
Analysis of ball-milling process under various conditions (i.e. working volume, milling time, and material load) on the material properties (i.e. chemical composition, as well as particle size and morphology), product yield, and electricity consumption wa... see more
Adel Laaraba,Abderrahmane Khechekhouche10.17509/ijost.v3i2.12753 Abstract views: 767 PDF downloads: 659
Heat transfer in the air gap of a vertical flat plat thermal solar collector containing partitions attached to its glazing has been studied numerically. The absorber and the glazing are kept at constant and different temperatures, while the vertical walls... see more
Syachruddin A R,Syukur Syukur,Septy Suryaningsih,Ratri Rahmawati,Asim L Khan10.17509/ijost.v3i2.12754 Abstract views: 542 PDF downloads: 444
The correlation between shell color and pearl oyster growth rates during the breeding phase is not well known and is then explored in this study. In addition, the effect of breeding depth on the growth is also assessed. The tests were conducted by monitor... see more
Siti Fatimah,Hasimah Alimon,Norhayati Daud10.17509/ijost.v3i2.12755 Abstract views: 965 PDF downloads: 623
Seaweeds, mainly brown species, have long been used as soil fertilizers and have several advantageous effects of spraying their crude extracts on plant growth. Unlike chemical fertilizer, biofertilizers derived from seaweeds or other organisms are usually... see more
Edward Rangga Pratama,Alaya Fadllu Hadi Mukhammad10.17509/ijost.v3i2.12756 Abstract views: 415 PDF downloads: 369
Boilers Forced Draft Fan has a gearbox reducer to reduce speed from steam turbine as a driver and fan as the driven. Based on Predictive Maintenance Group at Machinery and Heavy Equipment Section, it was found that gearbox has high vibration and noise whe... see more
Nik Abdul Hadi Md Nordin,Ahmad Fauzi Ismail,Surya Murali Racha,Ng Be Cheer,Muhammad Roil Bilad,Zulfan Adi Putra,Mohd Dzul Hakim Wirzal10.17509/ijost.v3i2.12757 Abstract views: 492 PDF downloads: 440
Hollow fiber membrane configuration is way forward in membrane development since it possesses higher packing density and effective surface area per unit module compared to other configuration. Since majority of mixed matrix membrane (MMM) for gas separati... see more
Juliawati Alias,Nurul Shuhada Shuhada Mohamed,Mahadzir Ishak,Xiorong Zhou,George E Thompson10.17509/ijost.v3i2.12758 Abstract views: 498 PDF downloads: 388
The influence of the hot forming process of AZ31B wrought and twin roll cast (TRC) magnesium alloy sheets on the microstructure and corrosion behaviour have been evaluated. The corrosion behaviour was investigated by hydrogen evolution experiments in chlo... see more
Yuli Panca Asmara,Tedi Kurniawan,Agus Geter Edy Sutjipto,Jamiluddin Jafar10.17509/ijost.v3i2.12760 Abstract views: 1116 PDF downloads: 814
High requirements in protection of steel reinforcing bar (steel rebar) from corrosion are necessary since there are multi interaction of corrosive chemicals which cause early damage of concrete buildings. Corrosion of steel in concrete can destroy the con... see more
Intan Kumalasari,Madzlan Napiah,Muslich H. Sutanto10.17509/ijost.v3i2.12762 Abstract views: 642 PDF downloads: 566
Phase Change Material (later to be referred as PCM) has been successfully utilized in some areas. PCM has emerged as one of the materials for pavement temperature reducing due to its latent heat. Some research has been done regarding this topic. The objec... see more