Judul: Analisis model jaringan kerja pada perakitan hydraulic excavator tipe Ex-200 di PT. Hitachi Construction Machinery Indonesia, Bekasi, Jawa Barat
Abstrak: Pengembangan industri alat-alat berat terutama yang mendukung pengembangan sektor pertanian mempunyai arti yang sangat penting karena menyangkut alih dan penerapan teknologi serta penguasaan modal, selain itu juga karena mampu menyerap tenaga kerja dalam jumlah yang relatif banyak. Peningkatan kebutuhan pasar terhadap produk alat berat mengharuskan produsen alat berat melakukan inovasi dalam melakukan proses produksi, agar dapat memenuhi kebutuhan pasar tanpa mengalami hambatan yang berarti akibat terjadinya perubahan dalam proses produksi. PT Hitachi Construction Machinery Indonesia adalah usaha patungan (joint venture) beberapa PMDN dan PMA yang merakit alat berat terutama excavator. Perusahaan ini didirikan dalam usaha untuk memenuhi kebutuhan pasar dalam negeri dan sekaligus menciptakan lapangan kerja.
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Judul: Analisis model jaringan kerja pada perakitan motor diesel model ts 50 (C) di PT Yanmar Diesel Indonesia Bogor, Jawa Barat
Abstrak: Keberhasilan suatu proses produksi ditentukan oleh organisasi yang baik serta teknik perencanaan dan pengawasan yang digunakan. Disamping i t u , kondisi pabrik yang rumit s e p e r t i halnya industri alat-alat penggerak d i Indonesia, mengisyaratkan perlu adanya suatu teknik yang dapat digunakan dalam perencanaan dan pengawasan sekaligus, yang menuntut suatu sistem yang cepat, efektif dan terkendali.
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell