Judul: Pengendalian Mutu dalam Proses Pembuatan Makanan Enteral di Rumah Sakit Dustira, Kota Cimahi, Jawa Barat
Abstrak: The goal of this research is to analyze the quality control process for each enteral feeding production step in Dustira Hospital. The design used in this research was cross sectional. This research was taken place from October until November 2011 in Dustira Hospital. The observation method use refered to Permenkes No.1096/Menkes/PER/V1/2011. The results showed that 90% food handler have good hygienic sanitation knowledge, but generally lacking in proper behavior. The result also showed that based on physical and sanitation facilities, the hospital is categorized as group B (total score 83.6%). Hygienic sanitation in the enteral nutrition production process does not meet the requirement (88.5%). Critical Control Point (CCP) was found in the processing step along with the risk which have to be controlled, that are physical (hair), biological (Salmonella, Shigella and Echericia colii), and cross contamination (food handler and utensil).
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Judul: Evaluasi Efektivitas Sanitasi pada Area Pendinginan dan Pengemasan Pada Produksi Mi Instan di PT. X Ciawi –Bogor
Abstrak: The research objectives were to evaluate the sources of recontamination product on cooling and packaging areas, the effectiveness of sanitation programs and personnel hygiene implemented in the cooling and packaging areas. The study was conducted at PT. X Ciawi, Bogor, from August through October 2011. The results of application of the basic requirements or CPMB indicated 5 deviations, ie, 4 minor nonconformances and 1 major nonconformance in the category rating of A (excellent). Employee understanding of hygiene and sanitation was good, showed by the questioners distributed to all employees. Microbiological recontamination sources of cooling area were found in the equipments such as conveyors, fans, and chains of cooling chamber unit. However the average number of TPC and mold were still under the internal standard (1.0 X 102 CFU/ml/cm2) established by the company. Contamination of yeast, E.coli and coliform were not found. On packaging area at the part of a tool such as conveyors, seasoning buckets and seal machine, the microbial contamination (TPC) was also found under the internal standard (1.0 X 102 CFU/ml/cm2). However other microbial contaminants such as mold, yeast, E.coli and coliform were negatives. Based on these findings, it can be concluded that the application of sanitation programs on the equipments of cooling and packaging areas were quite effective. Observation of air microbiological quality in the areas of cooling and packaging showed that contamination of TPC, molds and yeasts were under the internal standard (1.0 X 102 CFU/ml/cm2). Similar results were obtained from the cooling and packaging areas where the density of TPC, molds and yeasts were found, the values were under the internal standard (1.0 X 102 CFU / 15 minutes / 100cm2). The implementation of personnel hygine around cooling and packaging areas were effective shown by the data of equalize staphylococcus aureus and coliform were all negatives. The average amount of TPC contamination on the hands of employees were under the internal standard (1.0 CFU/ml/cm2 X 102), which indicated that personnel hygiene programs that had been implemented by the company were effective. In general it can be concluded that the implementation of GMP on particular areas of cooling and packaging at least as a basic requirements of the food industry had been met by PT. X
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Judul: Invers Drazin dari Matriks Toeplitz Singular
Abstrak: Matriks Toeplitz adalah matriks yang setiap unsur pada diagonal utama bernilai sama dan setiap unsur pada subdiagonal yang bersesuaian dengan diagonal utama juga bernilai sama. Matriks singular adalah matriks yang tidak bisa ditentukan inversnya. Akan tetapi, dapat diupayakan untuk ditentukan inversnya menggunakan invers matriks yang diperumum. Invers Drazin merupakan salah satu jenis invers matriks yang diperumum. Pada karya ilmiah ini ditentukan invers Drazin dari matriks Toeplitz singular dengan menggunakan metode Leverrier Faddeev. Kemudian, ditentukan invers Drazin dari matriks Toeplitz singular yang direpresentasikan sebagai penjumlahan segitiga bawah dan segitiga atas matriks Toeplitz berdasar pada teorema Gohberg dan Semencul., Toeplitz matrix is a matrix in with element on the main diagonal has the same value and on the subdiagonal corresponding to the main diagonal also has the same value. Singular matrix is a matrix that has no inverse. However, it can be attempted to determine the inverse using a generalized inverse matrix. Inverse Drazin is a type of generalized matrix inverse. This paper discussed the inverse Drazin for a singular Toeplitz matrix using the Leverrier Faddeev method. Then, the Drazin inverse of the singular Toeplitz matrix which is represented as a sum of products of lower and upper triangular Toeplitz matrix based on Gohberg and Semencul theorem.
Keyword: inverse Drazine, singular Toeplitz matrix