PENENTUAN JALUR DISTRIBUSI BARANG YANG OPTIMAL PADA PT. SURYA AGUNG KARYA UTAMA UNTUK MEMINIMALISASI BIAYA DENGAN METODE CLARKE AND WRIGHT SAVING HEURISTIC

PENENTUAN JALUR DISTRIBUSI BARANG YANG OPTIMAL PADA PT. SURYA AGUNG KARYA UTAMA UNTUK MEMINIMALISASI BIAYA DENGAN METODE CLARKE AND WRIGHT SAVING HEURISTIC - Jalur Distribusi, Clarke and Wright Saving Heuristic, Biaya Operasiona

STATISTICAL QUALITY CONTROL (SQC) PADA PROSES PRODUKSI PRODUK E DI PT DYN, TBK

This study discussed about the quality control of product E produced by PT DYN, Tbk., a plastic packaging manufacturer in Jatake, Banten. P map was used to map whether the product has been in the control limits or not. Pareto diagram was used in determining the biggest types of defects that occured in the product mapped. Causal diagram was used in determining the cause of defects in the product. For the purposes of the study, we collected data about the amount of production and the amount of defects of product E for three months as much as 45992. Based on the p map, there were seven data outside the control limits which were 9, 27, 30, 42, 43, 48 and 63. There were three biggest flaws obtained from Pareto diagram, i.e. black spots, rough body, and bram. The data was then analyzed using causal diagram. The results showed that the causes of the defects were: (1) human – less conscientious and less skilled ; (2) material – dirty raw materials, (3) methods – the work process did not follow the work standards, (4) machine – inappropriate settings, and (5) environment – dirty. Therefore, the company must make improvements to machinery, materials, methods, human and the environment to reduce products defects

Density functional calculations for H2 adsorption on Fe(OH) 3 by considering molecular orientation

H2 adsorption on Fe(OH)3 is investigated by using the density functional theory (DFT) for the H2 molecular orientation θ= 10° with respect to the surface normal and that for the H 2 molecular orientation θ = 70°. From the PES results of H2-Fe(OH)3 system, we find that for the H2 molecular orientation θ= 10°, a potential well is at Z = 4.2 Å with a depth of around 4.4 meV while for the H2 molecular orientation θ = 70°, a potential well is at Z = 3.0 Å with a depth of around 17.7 meV. The small binding energy and the positions of potential well with respect to the surface of these adsorption states are typical for physisorption

Ab initio study for structure, electric properties and light emission of linear-trans-quinacridone

The structure, electric properties and emission rate of linear-trans-quinacridone are investigated within the density functional theory (DFT) calculations. We find the structure of the molecule to be planar with an energy gap of 3.06 eV. The emission lifetime from the lowest unoccupied molecular orbital (LUMO) to the highest occupied molecular orbital (HOMO) of this material is found to be 24 ns, which is in good agreement with experimental results

Ab initio study for structure, electric properties and light emission of linear-trans-quinacridone

The structure, electric properties and emission rate of linear-trans-quinacridone are investigated within the density functional theory (DFT) calculations. We find the structure of the molecule to be planar with an energy gap of 3.06 eV. The emission lifetime from the lowest unoccupied molecular orbital (LUMO) to the highest occupied molecular orbital (HOMO) of this material is found to be 24 ns, which is in good agreement with experimental results