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Dadang Arifin
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Optimasi Sistem Pemotongan Material Alluminum Alloys dengan Pendekatan Linier Integer Programming: Studi Kasus di PT. Dirgantara Indonesia Dadang Arifin; Rida Nurida
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 9 No 2 (2010): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol9no2.323

Abstract

Salah satu fungsi yang ada di PT. Dirgantara Indonesia yaitu bagian pemotongan material (pre cutting) mempunyai tugas memotong raw material standar menjadi potongan-potongan yang sesuai dengan kebutuhan yang akan diproses menjadi komponen pesawat CN-235. Cara pemotongan yang dilakukan sekarang dinilai kurang efiesien karena masih banyak sisa-sisa material yang terbuang, sehingga dianggap terjadi pemborosan yang cukup besar. Atas dasar tersebut penelitian ini bertujuan merancang sistem pemotongan yang dapat meminimasi sisa material yang terbuang (scrap) dengan menggunakan pendekatan Operasional Research. Dari hasil penelitian dapat diperoleh penghematan berupa pengurangan sisa material yang tidak bisa dipergunakan lagi (scrap) awalnya rata-rata 3335 dm2 menjadi 1790,4 dm2, dengan jumlah raw material dapat dihemat 26 batang per 10 pesawat. Penghematan biaya secara keseluruhan dapat mencapai Rp. 3.283.184.162 pertahun.
Pengaruh Kombinasi Pupuk Kandang Sapi dan Jarak Tanam Pada Lahan Sawah Setelah Padi Terhadap Pertumbuhan dan Hasil Tanaman Kacang Hijau (Vigna radiata L) Varietas Walet Dadang Arifin; Muharam Muharam; H.M. Yamin Samaullah
Jurnal Ilmiah Wahana Pendidikan Vol 8 No 1 (2022): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (202.613 KB) | DOI: 10.5281/zenodo.5834852

Abstract

Indonesia after soybeans and peanuts. This study is aim to obtain the correct spacing and dose of cow manure towards the growth and crop yield of mung bean (Vigna radiata L) Walet varieties. This research was conducted in the hamlet of Jabon, Lemah Karya Village, Tempuran District, Karawang Regency, in August to October 2020. The research method used was an experimental method with a single factor randomized block design consisting of 8 treatments with 3 replications. The level of treatment is A (0 kg Cow manure + Planting distance 30 cm x 15 cm); B (0 kg Manure + Spacing 40 cm x 15 cm); C (0 kg cow manure + 50 cm x 15 cm spacing); D (0 kg cow manure + spacing 60 cm x 15 cm) E (9 kg of cow manure + spacing of 30 cm x 15 cm); F (9 kg of cow manure + Spacing 40 cm x 15 cm); G (9 kg of cow manure + 50 cm x 15 cm spacing); H (9 kg of cow manure + 60 cm x 15 cm spacing). The results showed that there was a significant effect on the number of pods per plant and seed yield per plot, but not significantly different with plant height (14 DAP, 21 DAP, 28 DAP, 35 DAP), number of branches (14 DAP, 21 DAP, 28 DAP, 35 days after planting), yield of pods per plot, weight of 100 seeds, number of filled pods per plant. The highest yield of pods per plot of 1.7 kg was achieved by treatment E (9 kg of cow manure + spacing of 15 cm x 30 cm), while the highest seed yield per plot of 411.67 g/plot or 0.46 ton/ha was achieved by treatment C (0 kg cow manure + 40 cm x 15 cm spacing).
Co-Authors H.M. Yamin Samaullah Muharam Muharam Rida Nurida