| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 154-157 |
| Abstraksi Narasi | : | There are many ways for controling mosquitoes, one of which is by using mosquito net dipped into permethrine. This study was aimed to detemine the effect of permethrine dipped clocth on the knock down period of Aedes aegipty. Seven doses of permethrin were applied, based on the WHO standard, namely 0.125 g/m^2 0.063 g/m^2, 0.031 g/m^2, 0.016 g/m^2, 0.008 g/m^2 gave the shortest knock down period. Post dipping time of 24 hours is more effective than that of 5 months. In addition, the thinner the cloth the shortest the knock down period. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 301-313 |
| Abstraksi Narasi | : | The effects of nutrition of different protein, fat, and carbohydrate contents on reproduction hormone in male cynomolgus monkey (Macaca fascicularis) injected with testosterone enathate (TE) and depot medroxy progesterone acetate (DMPA) combination have been studied. Thirty male cynomolgus monkey divided into three groups, each group consists of 10 monkeys. Group 1 (control) are fed with monkey-chow, consisted of 9% protein, 13% fat, and 78% carbohydrate. Group 2 are consisted of 15% protein, 15% fat, and 70% carbohydrate. Group 3 are consisted of 25% protein, 35% fat, and 40% carbohydrate. The results showed that blood gonadotropin hormone (FSH and LH), in all three groups, significantly decreased. The conclusion is that the effectiveness of combined injection of TE and DMPA can be determined by the nutrition status. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 118-128 |
| Abstraksi Narasi | : | The central problem in this paper is how to obtain the posterior predictive density from ARX model under the Normal-Gamma and the Normal-Wishart Invers assumptions. The ARX model in this object built from transfer function modelivs: Yt = v(B).xt + Epsilon t Some properties of the proposed method are proven analytically for one-step ahead forecast. It is The Regular Bayesian Method. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 203-207 |
| Abstraksi Narasi | : | The research was aimed to study the influence of coconut water of different age and varieties as natural media of Bacillus sphaericus. The growth of the bacteria was expressed in multiplying of vegetative cells. The research was carried out in February 1998 by using Complete Randomized Design with 7 treatments. The first treatment was using nutrient broth as the control media. The other six treatments were using coconut water of different level of age and variety. The age levels were defined by young, ripe, and over ripe, while the varieties were determined by green and brownish coconut. The results showed that coconut water of different age and variety repealed varied effects on bacteria growth. The ripe, green coconut water was the best natural media for the cells. Water of green coconut was better than that of brownish. The coconut water media was, actually, better than nutrient broth. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 264-270 |
| Abstraksi Narasi | : | The objective of this research was to elucidate the effects of composs made from market`s seawage on growth and cocoon production of earthworm Lumbricus rubellus. The research was conducted at Ragunan Zoo. Jakarta and in the laboratory of Zoology FMIPA University of Lampung from January to May 1996. The experiment was arranged in a Completely Randomized Design (CRD) using five treatments i.e. 10, 15, 20, 25 and 30days of the age of composs, and replicated three times. The results showed that the highest growth of earthworm was at 20 days of composs ages while the highest number of cocoon was at 15 days of sewage ages. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 289-300 |
| Abstraksi Narasi | : | Short-term effects of herbicide metribuzin on soil-arthropod populations in soy bean were examined under field conditions. There were control (untreated) and three different concentrations of metribuzin; less, equal, and greater than recomended concentration with each of the levels are in four replications. Experiment was designed under Latin square. Metribuzin was applied directly on soil surface one day before the sowing time of soy bean seed. A single soil sample was taken randomly from each subplot using a metal split corer with diameter of 5 cm and 15 cm deep and extracted in modified Tullgren funnels. Sampling periods were one day before spraying, 4, 8, 16, 32, 64 and 128 days after spraying. The results showed that application of metribuzin decreased both population abundance and diversity of soil arthropods. However, the adverse effects had ended 64 days after application. Compared with mites and `other` soil arthropods, Collembola was more affected by application of metribuzin and it provided earlier response. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 179-184 |
| Abstraksi Narasi | : | The grouper fry, Epinephelus fuscoguttatus, Forskal, were used in the exsperimental study. The fry were grouped in 4 different population densities, namely 5, 10, 15, and 20 fry/L. The fry that had been used were the newly hatched fry (d0), and observation had been done until they reached the sxteenth day (d16). The morphological changes observed during development were the diameter of mouth opening (Dml), the diameter of eyes (Dmt), the body width (Ttb), The body length (Pjt), the total body length (Ptt), and the fail fin width (Lse), The survival rate of each treatment was also treatment was also determined. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 37-48 |
| Abstraksi Narasi | : | This paper is the literature study about separation, identification and qualification of vanillin and related flavor compounds in vanilla extract by Liquid Chromatographic (LC) and High Performance Liquid Chromatography (HPLC). The Liquid Chromatographic results were compared with AOAC spectrophotometric method and the HPLC results were compared with 1982 ISO spectrophotometric method. Compound such as p-hydroksi benzaldehid and ethyl vanillin known to interfere in the vanillin analysis. Analysis with reverse phase liquid chromatography used stainless steel column 25 cm x 4,6mm, packed with totally porous irregular particles, C 8 packing, 10 Myu m size (Li Chrosorb), with a mobile phase methanol-acidifil water (10 + 90), UV detection at 254 nm fixed wavelength. This method was evaluated by 6 industrial laboratories under the aegis of the Technical Committee of the Flavor Manufactures Association Analysis with reverse phase high performance liquid chromatography, the compounds were separated on a silica colomn, bonded with pentafluoro phenyl, using a mobil phase gradient of methanol - citric acid with diode - array detection at 275 nm. Vanillin, vanillin acid, p-hydroksi benzoic acid and p-hydroksi benzaldehyde were identified by the spectra data and retention times given by reference compunds. Retention times and spectra data for a further 36 compounds are presented. The new HPLC technique allows a more accurate means of determining the vanillin content of vanilla than the ISO spectrophotometric assay. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 12-16 |
| Abstraksi Narasi | : | Co is the gas that is odorless, tasteless and colorless, but it is very toxsic. Sources of CO are burring fuel, coal and ciggarettes smokes. To detect CO in theair can be done kitagawa detector and to calculate CO in the blood (%COHb) using microdiffusion method. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 356-363 |
| Abstraksi Narasi | : | The correction factor of harmonic oscillator have been calculated by diagram method. This method is more efficient than the conventional method (or algebra approach), because it does not a complicated calculation. Another adrantages, this method can be developed to eaclucate the correction factor for high orde. |
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