Judul: Aplikasi statistical proses control (SPC) dalam pengendalian total mikroba di ruang filling pada proses produksi susu bantal real good di PKIS Sekar Tanjung, Pasuruan Jawa Timur
Abstrak: Langkah-langkah yang dilakukan dalam kegiatan magang ini adalah studi pustaka, observasi lapang, pengumpulan data, dan analisis data. Analisis data dilakukan dengan menggunakan diagram Pareto (untuk mengetahui penyebab reject yang utama), diagram sebab akibat (untuk, mengetahui faktor - faktor penyebab reject), dm bagan kendali (untuk memantau proses pengendalian).
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Judul: Penerapan statistical proses control (SPC) dalam mengendalikan kebocoran kemasan susu kental manis sachet di PT Frisian Flag Indonesia Plant Pasar Rebo, Jakarta Timur
Abstrak: Statistical Process Control adalah suatu metode yang digunakan untuk mengendalikan proses secara statistik dengan melihat pergerakan atau variasi data diantara rentang batas toleransi penyimpangan. Kegiatan magang di PT Frisian Flag Indonesia Plant Pasar Rebo difokuskan pada pengendalian proses pengolahan susu kental manis (SKM) Frisian Flag sachet. Karakteristik mutu yang dikendalikan adalah kebocoran kemasan. Analisa penyebab dan minimalisasi kebocoran tersebut dilakukan dengan menggunakan alat bantu yang terdapat dalam SPC agar perusahaan dapat meningkatkan kepuasan konsumen terhadap produk susu yang dihasilkan
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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