Judul: Hasil dan pertumbuhan tiga varietas kentang di tiga ketinggian tempat di Kabupaten Malang
Abstrak: Penelitian ini bertujuan untuk mengetahui hasil dan pola pertumbuhan tanaman kentang di dataran rendah bila dibandingkan dengan tanaman yang tumbuh di dataran yang lebih tinggi, serta mencari tipe varietas yang cocok untuk dataran rendah. Percobaan dilakukan di lapang pada bulan April sampai Juli 1932 dengan menggunakan rancangan Petak Terbagi di mana ketinggian tempat (900 m, 600 m, 300 m di atas permukaan laut) sebagai petak utama dan varietas (Katela, Desi­ ree, AVR C 1282/19) sebagai anak petak dengan 3 ulangan. Pengamatan dilakukan dengan cara membongkar tanaman setiap empat hari sekali sampai saat inisiasi umbi dan berikutnya diamati setiap dua minggu. Pengukuran dilakukan terhadap jumlah tunas, stolon, umbi, daun, batang dan tinggi tanaman. Juga diamati saat tumbuh stolon, saat terbentuk umbi, berat kering umbi dan bagian tanaman lain, hasil dan kualitas umbi.
Keyword: Solanum tuberosum L.;, Vegetatif;, Markkrome;, Bogor Agricultural University;

Judul: Pengujian Sifat Tumbuh dan Hasil Biji Botanis dari Beberapa Nomor Pemuliaan Kentang di Dataran Rendah dan Dataran Tinggi
Abstrak: Penelitian ini bertujuan untuk membandingkan pertumbuhan dan hasil biji botanis dari beberapa nomor penuliaan kentang dan daya adaptasinya di dataran rendah dan dataran tinggi. Penelitian ini dilakukan dengan menggunakan polybag di rumah plastik. Biji yang digunakan adalah PAS 400L, PAS 3063, PAS 4012 dan PAS 4050, serta sebagai pembanding digunakan umbi varietas Granola ( di dataran tinggi ) , varietas Red Pontiac dan varietas LT1 ( di dataran rendah). Xaktu penelitian dari bulan September 1984 sampai dengan bulan Pebruari 1985. Rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL).
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Judul: Pemurnian dan karakterisasi protein inhibitor RNA helikase virus hepatitis C
Abstrak: Hepatitis C virus (HCV) infection is the second most common chronic viral infection in the world with global prevalence. This infection is contribution to chronic hepatitis and liver cirrhosis, often leading to hepatocellular carcinoma. There is no effective drug and vaccine available against HCV. The current standard treatment, a combination of pegylated interferon-α with ribavirin, is limited by its suboptimal response rate in a significant patient population, side effects, and affordability. Therefore, development of effective drug is needed. One approach to find out the candidate of antiviral drug is to discover the inhibitor of enzyme that essential for virus replication, such as RNA helicase. Streptomyces chartreusis 5-095 produce the inhibitor of HCV RNA helicase. The aim of this study was to purify the protein inhibitor which has inhibition activity against ATPase activity of RNA helicase HCV from S. chartreusis 5-095. The supernatant of culture S. chartreusis 5-095 exhibited high inhibiton activity against ATPase activity of RNA helicase HCV (approximately 72%) at 10 days of incubation. The extracellular protein inhibitor was partially purified by procedures of precipitation with ammonium sulfate to 65% saturation and gel filtration (Sephadex G50) using methanol water solution (4:6) as an eluen. The purity of protein inhibitor was monitored by SDS PAGE. The protein inhibitor showed a relative molecular mass were estimated to be 14 kDa and increased the purity 23,08 fold than those of the crude protein. The specific activity and IC50 after purification were 13,1338 U/mg and 0,0767 mg/mL, respectively. The activity of purified protein inhibitor showed its stability over pH range from 5-8 and optimum at pH 7,4. The inhibition activity showed its stability up to 70% at temperature 100 oC. The purified protein inhibitor relatively stable its activity at storage in the range of -20 oC to room temperature for 35 days.
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