Judul: Manajemen Produksi Kertas di PT. Pindo Deli Pulp dan Paper Mills, Karawang, Jawa Barat (Aplikasi Model Goal Programming),
Abstrak: Kertas merupakan produk yang sangat penting di antara kebutuhan fisik lainnya. Di samping sandang dan pangan, kertas sudah menjadi kebutuhan pokok sehari-hari mulai dari buku, kertas tulis, majalah, koran, uang kertas, kertas tissue, sampai kertas komputer. Namun belakangan ini harga kebutuhan kertas tersebut mengalami peningkatan akibat dari biaya produksinya yang semakin tinggi, yang merupakan dampak dari adanya penurunan kurs dollar terhadap rupiah.
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Judul: Optimasi Produk Kertas: Studi Kasus di PT. Pindo Deli Pulp and Paper Unit Paper Machine 12, Karawang Jawa Barat
Abstrak: Konsumsi kertas domestik yang terus meningkat merupakan suatu faktor penting yang merangsang pertumbuhan industri pulp dan kertas di Indonesia, namun ketersediaan bahan baku kayu yang terbatas menghambat pertumbuhan tersebut. Situasi ini membuat industry pulp dan kertas perlu melakukan efisiensi dalam proses produksinya. Salah satu teknik yang dapat digunakan adalah program linier. Teknik ini dapat menentukan kombinasi optimum produk yang dihasilkan sekaligus mengoptimalkan alokasi penggunaan sumberdaya, seperti bahan baku kayu, kapasitas produksi, waktu penggunaan mesin, dan kapasitas mesin untuk mendapatkan keuntungan yang maksimum. Penelitian ini dilakukan di PT. Pindo Deli Pulp and Paper Unit Paper Machine 12 yang menghasilkan 6 jenis produk kertas seperti, Brief Card (BC), Base Paper (BP), Drawing Paper (DP), Wood Free (WF), Pre Print (PPR), dan Stiffner Board (SB). Hasil penelitian menujukkan bahwa apabila teknik program linier diterapkan akan meningkatkan jumlah produksi sebesar 18% dan keuntungan sebesar 72%.
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Judul: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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