Judul: Implementasi Statistical Process Control Pada Operasi Pengisian Produk Pangan Bubuk
Abstrak: Variabilitas berat produk pada operasi pengisian yang terjadi pada sebuah perusahaan manufaktur pangan bubuk merupakan masalah kualitas yang signifikan. Variabilitas berat produk menyebabkan pembeli mendapatkan jumlah produk yang bervariasi dalam tiap kemasan. Penelitian ini bertujuan untuk mengimplementasikan SPC (Statistical Process Control) untuk mereduksi variabilitas tersebut. Tiga sumber variabilitas yang dianalisis adalah metode penimbangan, kinerja operator, dan berat kemasan. Analisis terhadap metode penimbangan yang dilakukan dengan uji gage Repeatability and Reproducibility (R&R) menunjukkan bahwa metode penimbangan pada pengukuran sachet dan box berdampak terhadap 3.55 dan 1.30 % variasi produk akhir. Analisis terhadap kinerja operator yang dilakukan dengan uji ketepatan pengaturan berat menunjukkan bahwa underadjustment (terlewatnya pengaturan tombol pengisi mesin pengisian saat beratnya diluar batas kontrol) merupakan sumber variabilitas signifikan. Analisis terhadap berat kemasan yang dilakukan dengan uji konsistensi menggunakan bagan kendali X̅ -R menunjukkan bahwa konsistensi berat kemasan pemasok B berada diluar batas kontrol. Pengetatan pemantauan berat produk oleh operator dengan interval 15 menit mampu mereduksi standar deviasi dari 0.0395 menjadi 0.0298 dan mengubah ratarata berat produk dari 2.028 menjadi 2.001 g, mendekati target berat produk 2.000 g. Studi kelayakan solusi dilakukan dengan memetakan aktivitas operator pada bagan Gantt dan menunjukkan bahwa pengetatan pemantauan berat produk oleh operator dengan interval 15 menit layak diterapkan.
Keyword: variabilitas, Statistical Process Control, pengisian, gage R&R, control chart

Judul: Aplikasi Statistical Process Control dalam Pengendalian Ketidaksesuaian Kemasan Milkuat Pouch di PT Danone Dairy Indonesia
Abstrak: Quality is considered as the main factor of food processing industry. One tool that important to control food quality is Statistical Process Control (SPC). Unconformity (product reject) is one of many quality problem in all manufacturing product such as Milkuat Pouch in PT Danone Dairy Indonesia. This cooperation has a minimum limit of unconformity specification standard, i.e. it must be less than 1,7% of the actual output production. This parameter show us how much losses earned, compares to raw material and packaging material aspect of the filling process. This product consist of two main material, water and fresh milk. The purpose of this research is to apply SPC in monitoring the unconformity quality of the product in filling machine area. The method concept which used to solve this problem are observation and identification of problems, brainstorming, control chart, fishbone diagram, pareto diagram and action plan. The conclusion of problem identification is the number of unconformity in machine 15 and 16 was out of standard spesification. Measurement results of samples 125 batches (15 days production in first shift) using np-chart and p-chart of control charts, indicating that the process is out of control, and the percentage shows the unconformity product is more than 1,7%, it means there still occuring many various errors that impact to defect in the final product. The causes of unconformity problem were classifieed by fishbone and pareto diagram analysis. This analysis is done by observation of each batch production for 15 days in first shift on each machine, machine tube AC, AD, AE, and AF. The action plan has been constructed to eliminate 80% of root cause so that it would reduce the unconformity of product.
Keyword: control chart, unconformity, Milkuat Pouch, statistical process control (SPC)

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