| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 241-250 |
| Abstraksi Narasi | : | PERT method is an Programme Evaluation and Review technique. On planning and controlling system project time is very important variabel in PERT method. Usually, a time distributions of project activities has beta distribution. In this paper, it is assumed that the distribution is not the same. In analyzing as the distribution effect on project scheduling time, it is used moment generating function, E[e^tx_k] = .............. Next, one to find mean and variance setting first and second derivatif at t = 0. Based on a result at analyses using Turbo Basic Program, it is concluded that the distribution forms will not give significant effect on scheduling time. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 31-34 |
| Abstraksi Narasi | : | We have investigated the effect of reservoirs color on the frequency of egg lying of mosquito Aedes aegypti L. the light green, pink, blue, and white color. The result showed that there is a significant difference in the frequency of egg lying among the four reservoir. The frequency of egg lying for light blue, light green, pink and white reservoir is 18.7500, 10.2500, 10.000 and 1.250 respectively. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 51-57 |
| Abstraksi Narasi | : | An experiemnt was conducted to determine the optimum level of salinity for the growth and food efficiency of Seabass (Lates calcarifer) juveniles. Juveniles of Seabass with initial weight of 0.184±0.002 g were reared in 30-L aquaria at 20,23,26, and 29 ppt of salinities at density of 1 fish L^-1. The fish were fed with adult Artemia three times a day at satiation for 30 days. The result of experiment showed that fish reared in the salinity of 25,26-26,69 ppt gave the best growth and food efficiency. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 137-144 |
| Abstraksi Narasi | : | Earthworm has a high protein content, between 64 to 72% of its dry weight (Catalan, 1981). Based on this fact, eartworm could be potentially used as mixture of fish fed (pellet) to increase the protein content of the fish. This research was conducted to elucidate the effect of a mixture of pellet and fresh earthworm on the growth of post juvenile dumbo catfish. The fish-fed treatments consisted of pellet only (Po, control), a mixture of 3 parts of pellet and 1 part of earthworm (P1), a mixture of 2 parts of pellet and 2 part of earthworm (P2), and a mixture of 1 part of pellet and 3 parts of eartworm (P3). Those treatments were replicated five times. Data were analyzed with the ANOVA and the comparation among means was tested with the HSD (5%). The result showed that the mixture of 1part of pellet and 3 parts of earthworm (P3) was the best composision fed, because it was the lowest fed conversion (0.4046). In addition, the highest growth like body long (16.994 cm/3 moths) and body weigh (10.324 gram/3 mobths) of dumbo catfish after juvenil was achieved after they fed P3 (a mixture of 1 part of pellet and 3 parts of earthworm). |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 1-6 |
| Abstraksi Narasi | : | The use of several level of Nomuraea rileyi spore has been studied at Natar, Assesment Station for Agrucultural Technology from Meri to July 1996. The objective to find out the optimum spore consentration of 2%, 4%, 6%, 8%, 10% dan kontrol (0%). Those were arranged in Faktorial with for replication. The result showed that the highest mortality to find at first instar and second instar of 97,5% and than the mortality decrease at third and fourth instar of 65% followed by fiveth instar of 52,5% and adult of 35%. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 196-204 |
| Abstraksi Narasi | : | The effect of Ca^2+, Cd^2+, Li^+, Mg^2+ dan Na^+ cations on biosorption of zinc from solution was studied using Saccharomyces cerevisiae biomass that was cultured under laboratory conditions. Concentration of zinc was determined by atomic absorption spectrometry (AAS). The loading of zinc on the biomass was determined as the difference between the initial and final zinc concentration in the solution. The results showed that the presence of Ca^2+ and Mg^2+ cations interfered with zinc uptake by S. cerevisiae, whereas Li^+, Na^+ and Cd^2+ cations had no affect. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 25-30 |
| Abstraksi Narasi | : | The experiment was conducted at Bumi Tahayu Village, Gunung Sugih, Central Lampung frm December 1997 to March 1998. The experiment was designed as a randomized block arraged factorially in three replications. The main factors ware varieties i. E: V1 (Bisma), V2 (Semar 2), V3 (C3), V4 (Arjuna), dan V5 (Pioner 4). Although second factors were fertilizer dosage i. E:P1 = 350 kg Urea + 265 kg SP36 + 121 kg KCl per ha, P2 = 300 kg Urea + 125 kg SP36 + 100kg KCl per ha, and P3 = 300 kg Urea + 50 kg SP36 + 100 kg KCl per ha. The observation on worm Heliothis sp. populations and damage percentation. Result showed that worm heliothis sp. populations and damage percentation was significant, while interacthis between fertilizer dosage and maize verieties. Population in Pioner 4 was lower and in Bisma was highest. Population and dame persentation was lower in V5P2 (Pioner 4 variety with dosage 300 kg Urea + 125 kg SP 36 + 100kg KCl per ha). |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 41-50 |
| Abstraksi Narasi | : | The technology of rearing of grouper larvae has not been established and the fact that survival rate was low. An experiment was conducted to study the effect sites with different natural light intensities (outdoor, semioutdoor, and indoor) One-day old the grouper (Epinephelus fuscoguttatus Forskal) at 5 larvae L^-1 were used. The foor consumption rate was significantly different among the groups (P0.01). The relation of the eyes diameter growth and food consumption was significantly different (P |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 191-195 |
| Abstraksi Narasi | : | Determination of the constant rate chemical reaction of chlorambucil (k) was studied by cyclic voltammetry based on the peak current anodic (ipa), the peak current cathodic (ipc), the peak potential anodic (Epa), the peak potential cathodic (Epc), the potential switching (El), and the scan rate potential (v). In this research, kind of the mechamism electrode reaction can be determined by plotting of ipc/ipa with v. The constant rate chemical reaction of chlorambucil (k) can be evaluated by connection of ipc/ipc with kt. The results showed that the kind mechanism of electrode reaction was followed EC mechanism. The constant rate chemical reaction of clorambucil (k) was 3.52/s. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 158-167 |
| Abstraksi Narasi | : | Grouper fry at right after hatching ware incubated in media consisted of 100% seawater and taurine with diferent concentrations (0,100,500 and 1000ppm). The survival rate was determined at day 1 up to day 4. Two separated groups were conducted based on density, 10 and 20 individu/L. Both of sparated groups showed that taurine with concentration of 500 ppm increased in survival rate significantly (p |
Unduh Dokumen Berkas PDF Utama