Judul: Metode binomial tersensor dan penarikan contoh sekuensial berdasarkan gejala serangan penggerak batang padi
Abstrak: Sebuah penelitian untuk membuat model keputusan pengendalian hama penggerek batang padi telah dilaksanakan di Singamerta pada musim kemarau 1989 (program penelitian Kelompok Peneliti Entomologi Balittan Bogor tahun 1989/1990). Hubungan antara rataan proporsi contoh rusak dan peluang kejadian contoh rusak ditentukan dengan cara memodifikasi model peluang kejadian binomial empirik Gerrard dan Chiang (1970). Nilai penduga peluang kejadian pada taraf sensor optimal dijadikan dasar penyusunan hipotesis model kepu- tusan sekuensial hama penggerek padi. Efisiensi model keputusan sekuensial kemudian dibandingkan dengan model keputusan contoh tetap.
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Judul: Studi Simulasi Metode Penarikan Contoh Berdasarkan Tipe Kepadatan Populasi dan Pola Penyebaran
Abstrak: Penelitian ini bertujuan untuk membandingkan beberapa metode penarikan contoh dalam kaitannya dengan pelaksanaan pengendalian hama / penyakit tanaman. metode penarikan contoh tersebut telah dicobakan pada data tiruan penyebaran populasi serangan hama Oohiomvia phaseoli Sang banyak didapati pada tanaman kedelai.Data tiruan dibuat berdasarkan tipe kepadatan popusi(rendah untuk 20 tanaman terserang / 9 0 0 tanaman, sedang untuk 30 tanaman terserang / 9 0 0 tanaman dan tinggi untuk 40 tanaman terserang / 9 0 0 tanaman ) serta pola penyebaran serangan hama di lapang ( penyebaran acak, bergerombol di tengah dan bergerombol dipinggir).
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Judul: Konsumsi Minuman Beroksigen dan Dampaknya terhadap Performa saat Berolahraga, Profil Lipid, Glukosa Darah dan SGOT/SGPT
Abstrak: Exercise requires more energy (ATP) than normal activities. Oxygen consumption increases, while lung capacity is limited. It causes anaerobic respiration which produces lactic acid that reduces exercise performance. The purpose of this study was to assess the effects of short-term and long-term drinking of oxygenated water on the exercise performance and oxygen saturation (SpO2), lipid profile (cholesterol, triglycerides, LDL, and HDL) and blood glucose, as well as an influence on liver (AST/ALT). This study included (1) ethical clearance submission, (2) selection of potential respondents, (3) socialization and informed consent, (4) short-term experiment, (5) long-term trials, and (6) data processing. Recruitment of respondents was based on inclusion and exclusion criteria and medical check up. In the socialization, the right way of drinking samples was introduced. In the short-term and after long term experiments, twelve male student volunteers drank oxygenated water (50, 80 and 130 ppm) and normal water, 15 minutes before treadmill (10 Kmh) in Somatokinetika Laboratory of Jakarta State University. SpO2 was measured before and after treadmill, and 0, 5, 10, 15 minutes after drinking. In the long-term, seventeen male student volunteers drank oxygenated water (100 ppm) for 21 days and lipid profile, blood glucose, and AST/ALT were analyzed. Before and after intervention, blood plasma was used to measure the parameters in the Laboratory Clinic of dr Katili. Cholesterol, triglycerides, and blood glucose analysis used enzymatic colorymetry method, while HDL analysis used enzymatic colorymetry and precipitation method. LDL was calculated by Friedewald equation and AST/ALT analysis used kinetic method. Oxygenated water had no effect on SpO2 and exercise performance. Interestingly the average of VO2 max and time to fatigue of those drank oxygenated water were higher than those drank normal water. VO2 max (mL/Kg/menit) increased from 45.87 (normal water) to48.89 (50 ppm), 48.03 (80 ppm), 47.40 (130 ppm), and 48.76 (long-term). Time to fatigue was be reached 10.34 minutes (normal water), 11.18 minutes (50 ppm), 11.27 menit (80 ppm), 130 ppm (10.93 minutes) and 11.60 minutes (long-term). Long-term effects also showed the improvements of cholesterol (168.12 to 114.53 mg/dL), LDL (103.94 to 54.41 mg/dL) and the ratio of cholesterol : HDL, however they were also influenced by diet and intensity of activity. HDL, triglycerides, and blood glucose was not affected by oxygenated water and had no harmful effect on the liver.
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