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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Jurnal Produksi Tanaman Jurnal Pengembangan Teknologi Informasi dan Ilmu Komputer
Arifin, Mochammad Samsul
Jurusan Budidaya Pertanian Fakultas Pertanian Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science

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KAJIAN PANJANG TUNAS DAN BOBOT UMBI BIBIT TERHADAP PRODUKSI TANAMAN KENTANG (Solanum tuberosum L.) VARIETAS GRANOLA Arifin, Mochammad Samsul; Nugroho, Agung; Suryanto, Agus
Jurnal Produksi Tanaman Vol 2, No 3 (2014)
Publisher : Jurusan Budidaya Pertanian Fakultas Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (308.939 KB) | DOI: 10.21776/100

Abstract

Produksi tanaman kentang di Indonesia dapat meningkat dengan didukung peng-gunaan bibit yang baik. Dalam hal ini dengan penggunaan umbi yang memiliki panjang tunas yang dijadikan sebagai kriteria viabilitas benih untuk mengetahui cepat lambatnya pertumbuhan awal ken-tang, serta penggunaan bobot umbi bibit yang tepat dalam mendukung produksi ken-tang. Penelitian ini bertujuan untuk men-dapatkan panjang tunas dan bobot umbi bibit yang tepat dalam meningkatkan pro-duksi kentang (Solanum tuberosum L.) Varietas Granola. Penelitian dilaksanakan pada bulan Agustus - November 2013, di Dusun Junggo, Desa Tulungrejo, Kec. Bumiaji, Kota Batu. Metode penelitian yang digunakan adalah Rancangan Acak Kelompok Faktorial dengan 9 perlakuan dan 3 ulangan yang meliputi 2 faktor. Faktor pertama, panjang tunas umbi bibit dan faktor kedua, bobot umbi bibit. Hasil pe-nelitian menunjukkan bahwa tanaman ken-tang dengan penggunaan berbagai variasi ukuran panjang tunas 0,3-0,7 cm, 1-1,4 cm, dan 1,7-2 cm tidak mempengaruhi kom-ponen pertumbuhan vegetatif tinggi tanam-an, jumlah batang, jumlah daun dan luas daun. Panjang tunas umbi bibit pada ber-bagai variasi ukuran 0,3-2 cm memiliki kemampuan yang sama terhadap produksi tanaman kentang yaitu 37,12-38,88 ton ha-1. Penggunaan berbagai variasi ukuran umbi bibit 35-50 g/umbi dan 55-70 g/umbi mem-pengaruhi komponen pertumbuhan vegetatif tinggi tanaman, jumlah batang, jumlah daun dan luas daun yang sama dan lebih tinggi daripada penggunaan umbi bibit 15-30 g/umbi. Penggunaan bobot umbi bibit 35-50 g/umbi memiliki potensi produksi yang sama dengan umbi bibit 55-70 g/umbi, sebesar 40,98 ton ha-1 dan 43,30 ton ha-1, lebih tinggi dibanding penggunaan umbi bibit 15-30 g/umbi dengan produksi 29,50 ton ha-1. Kata kunci: Solanum tuberosum L, varietas Granola, panjang tunas, bobot umbi bibit
KOMPOSISI PENYUSUN TERUMBU KARANG TEPI (FRINGING REEF) DI PULAU MANDANGIN KABUPATEN SAMPANG, MADURA The Composition of Fringing Reef Formation in Pulau Mandangin, Sampang Province, Madura Guntur Guntur; Samsul Arifin; Oktiyas Muzaky Luthfi
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 11, No 2 (2016): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.047 KB) | DOI: 10.14710/ijfst.11.2.94-98

Abstract

 Terumbu karang tepi di Pulau Mandangin tersusun substrat biotik dan abiotik dengan kedalaman tidak lebih dari 40 m. Pulau Mandangin adalah pulau kecil yang memiliki komposisi substrat dasar seperti terumbu karang dan perairannya yaitu zona leeward dan zona windward. Zona leeward adalah sisi yang membelakangi arah datangnya angin, sedangkan zona windward adalah sisi yang menghadap arah datangnya angin. Tujuan dari penelitian ini adalah untuk mengetahui komposisi penyusun terumbu karang tepi (fringing reef) dan mengetahui perbedaan komposisi penyusun terumbu karang tepi (fringing reef) antara zona leeward dan zona windward di Pulau Mandangin. Metode yang digunakan adalah Line Intercept Transect (LIT) secara vertikal, LIT dimulai dari surut terendah sampai daerah reef slope dan dilakukan pencatatan semua jenis substrat yang dibawah garis transek. Hasil penelitian menunjukkan zona fringing reef yang mengelilingi Pulau Mandangin tersusun atas substrat rubble, sand, alga, rock, dead coral, dead coral with algae, sponge, coral massive dan coral submassive. Zona leeward lebih bervariasi dari zona windward dalam susunan fringing reef. Hal ini karena angin yang terjadi di zona windward lebih besar dari zona leeward, sehingga substrat di zona windward hanya rubble dan sand.  Fringing reef in Mandangin Island comprises of biotic and abiotic substrates in depth not more than 40 m. Mandangin Island is a small island with base substrate composition mostly involving coral reef. The waters include leeward and windward zones. Leeward zone is paralleling with wind incoming direction, whereas windward zone is facing on wind incoming direction. The objective of research is to understand the composition that constitutes fringing reef and to recognize different constitutive composition of fringing reef at leeward zone and windward zone in Mandangin Island. Method of research is Line Intercept Transect (LIT) that is applied vertically. LIT starts from the lowest ebb toward the reef slope zone, and it involves registering all substrate types below transect line. Result of research indicates that fringing zone surrounding Mandangin Island consists of various substrates such as rubble, sand, alga, rock, dead coral, dead coral with algae, sponge, coral massive and coral sub-massive. Leeward zone is more diversified in fringing reef composition than windward zone. It is evident because wind occurrence at windward zone is higher than at leeward zone, and thus, substrates at windward zone include only rubble and sand. 
Sensitivity and Specificity of Nested PCR for Diagnosing Malaria: Cases in Several Areas of Indonesia Samsul Arifin; Loeki Enggar Fitri; Hidayat Sujuti; Bagus Hermansyah; Agustina Tri Endharti; Niniek Burhan; Didi Candradikusuma; Erma Sulistyaningsih; Josef Sem Berth Tuda; Umar Zein
Journal of Tropical Life Science Vol. 8 No. 2 (2018)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.08.02.11

Abstract

Indonesia is still included in high endemic area of malaria infection. Early detection as well as appropriate and quick treatment is needed to be able to prevent and treat malaria in Indonesia. Laboratory examination using a microscopic method is still used as the gold standard to diagnose malaria cases. However, the morphology similarity of some Plasmodium species and the number of parasites that can be seen under microscopy causes malaria diagnosis become difficult if only relying on microscopy diagnostic method. The purpose of this study is to analyze the sensitivity and specificity of nested PCR compared to microscopic examination in diagnosing malaria cases. A cross-sectional study has been carried out in some areas of Indonesia and the microscopic analysis as well as nest PCR was done in Laboratory of Parasitology and Laboratory of Central Biomedical Faculty of Medicine, Universitas Brawijaya, Malang East Java Indonesia. A total of 149 blood samples from patients with clinical symptoms of malaria had been obtained from Sumatra, Sulawesi and East Java during December 2011 to December 2013. From 149 sample, 81.9% samples were diagnosed malaria positive by microscopy examination, whereas the PCR results showed that 90.6% of samples were positive. Nested PCR sensitivity is 97.5%, and microscopy 88.2%. Nested PCR specificity is 40.7%, whereas microscopy 78.5%. PPV and NPV for nested PCR are 88,2% and 78.5% respectively, and for microscopy are 97.5% and 40.7% respectively. Nested PCR has a higher sensitivity than microscopy in diagnosing malaria and is able to detect mixed infection better than microscopic examination. However, it is statistically less specific than microscopy examination.
Pengembangan Media Pembelajaran Interaktif Untuk Materi Pelajaran Pemrograman Dasar Kelas X di SMK Negeri 8 Malang Menggunakan Model APPED Samsul Arifin; Hanifah Muslimah Az-Zahra; Admaja Dwi Herlambang
Jurnal Pengembangan Teknologi Informasi dan Ilmu Komputer Vol 3 No 8 (2019): Agustus 2019
Publisher : Fakultas Ilmu Komputer (FILKOM), Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (752.442 KB)

Abstract

In the Software Engineering (RPL) class X of SMK Negeri 8 Malang, it can be seen that the learning process is still conventional so students cannot understand basic programming materials, students have difficulty learning independently because they do not have learning resources. So it is necessary to conduct research on Interactive Learning Media Development for Class X Basic Programming Subjects at SMK Negeri 8 MALANG Using the APPED Model. The APPED research model has 5 steps: initial analysis and research, design, production, evaluation and dissemination. The results of ongoing evaluations with three aspect criteria get valid results. At the alpha testing stage the material validator obtained a value of 70.00 in the "good" category, 72.00 in the "good" category by the media validator, and a value of 92.00 in the "very good" category by the instructor validator. The results of beta testing conducted on 3 students based on the level of student ability on an average pretest obtained by 70%, while the average posttest results obtained by 86.6% so that there is an increase in student learning outcomes. The normality test results have normal distribution data with sig> 0.05. The standard deviation results are 9.21, the significance results are 0.00, so it is concluded that at the level of sig there are differences. Based on the results of different trials conducted, the interactive learning media can be disseminated.
Co-Authors Admaja Dwi Herlambang Agus Suryanto Agustina Tri Endharti Bagus Hermansyah Didi Candradikusuma Erma Sulistyaningsih Guntur Guntur Hanifah Muslimah Az-Zahra Hidayat Sujuti Josef Sem Berth Tuda Loeki Enggar Fitri Niniek Burhan Nugroho, Agung oktiyas muzaky Luthfi, oktiyas muzaky Umar Zein