Judul: Aplikasi Teknik Pemrograman Sasaran Dalam Optimasi Pengendalian Mutu Kertas Medium Di PT Kertas Bekasi Teguh
Abstrak: Pengendalian mutu, selain berfungsi untuk memelihara keseragaman mutu produk, juga dimaksudkan untuk meningkatkan efisiensi agar biaya produksi dapat ditekan seminimal mungkin serta meningkatkan dan menjamin mutu produk yang baik dalam jangka panjang guna memuaskan konsumen. Penelitian ini bertujuan untuk menentukan alternatip solusi dalam manajemen pengendalian mutu, khususnya dalam pengendalian proses. Nilai-nilai spesifikasi bahan baku dan proses dioptimalkan agar spesifikasi mutu produk dan efisiensi produksi dapat dipenuhi sesuai dengan urutan prioritas sasaran. Studi kasus dilakukan di PT Kertas Bekasi Teguh terhadap kertas medium yang diproduksi pada unit mesin kertas tipe "fourdrinier". Kertas medium (corrugating medium) merupakan salah satu jenis produk yang sering mendapat klaim dari pihak konsumen. Di samping itu rata-rata sekitar 7 persen dari produksi total per bulan tidak memenuhi spesifikasi standar. Pada setiap awal proses produksi, penetapan bahan masukan dan kondisi proses dilakukan melalui percobaan-percobaan hingga akhirnya dihasilkan produk sesuai dengan spesifikasi mutu yang dikehendaki. Keadaan tersebut menyebabkan produktivitas pabrik turun sampai 20 persen.
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Judul: Pengendalian Kualitas Pada Proses Produksi Kertas Medium di PT Indah Kiat Pulp & Paper, Serang Mill
Abstrak: Paper with several sizes plays an important role in human life especially in modern society. Now paper becomes one of human needs and is used in various cases. With times, the paper consumption surely increases because of paper characteristics easily used, practical, light, cheap and can be recycled. Based on rising need of paper, it is a challenge for thefact01Y to increase the quality, capacity, and technology in the paper production. Qualified product is affected by production level through monitoring for each level of the production process. Quality management can be used for quality control, so that it can minimize product damage. The research was conducted at PT Indah Kiat Pulp and Pap~r, Serang mill (PT IKP P). The objective of the research is to identifY level factors of production process that influence final product quality, to analyze pelformance of production process, and main parameter of product quality by using quality management technique namely cause and effect diagram and control chart, identifYing the process instability systems and analyzing the correction process by using information ji-om observation, literature study and expert opinion in the research plant.
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Judul: Phylogenetic analysis of subgenus Dieramalpinia (Alpinia carolinensis clade) - Zingiberaceae based on ITS sequences
Abstrak: The most recent infra-generic classification of Alpinia Roxb. by Smith divided the genus into two subgenera (Alpinia and Dieramalpinia) with 11 sections and 12 subsections. One of the sections of Alpinia subgenus Dieramalpinia is Myriocrater which contains about 16 species. The most recent phylogenetic study that included species from Alpinia subgenus Dieramalpinia was done by Kress et al. (2007). They sampled only eight species and found that these were nested within a clade referred to as the Alpinia carolinensis clade. This clade was well supported and may be separated as a genus if sampling more species confirms the result. The objectives of the present project are to compare ITS within one species; to test the monophyly of Alpinia section Myriocrater; to test whether adding more samples still supports the Alpinia carolinensis clade. The present study included thirty-nine samples representing nineteen taxa from Alpinia; seven samples are still unidentified at species level. Sequences of the Internal Transcribed Spacer were used in the analysis. The result showed that ITS sequence of Myriocrater’s species are more conserved than another group in Zingiberaceae. There are base variations within species level. The Alpinia section Myriocrater plus five species from other section is not monophyletic. The Alpinia carolinensis clade still includes three sections of Smith classification (Dieramalpinia, Myriocrater and Pycnanthus) from subgenus Dieramalpinia. Alpinia subgenus Dieramalpinia section Eubractea and one species of section Dieramalpinia are separated into another clade.
Keyword: Alpinia, Myriocrater, Dieramalpinia, Alpinia carolinensis clade