| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 233-240 |
| Abstraksi Narasi | : | Plankton can be used as an indicator of water quality. The purpose of the research is to know the diversity of plankton in Way Wisulan river. The secondary data observed were physical and chemical factor such as: water flow, turbidity, pH, DO and BOD. There were 3 stations detemined subjectively. Plankton Index Diversity were calculated with Shanon-Wheaver`s Index. The result should that plankton diversity of all the stations vary in term total number and species. With the range of index diversity 2.057 - 2.987. Water physical and chemical characteristics had positive correlation with the diversity of plankton in Rivr Wisulan. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 185-193 |
| Abstraksi Narasi | : | Lampung Province is a part of western Indonesia are which is tropical climate. Most part of this state concist of tropical rain forest where support the growth of natural orchid. The population structure of orchid should be investigated. This research carried out by exploration methods. The exploration was taken in three district of Lampung Propince i.e. South Lampung, Middle Lampung and West Lampung. Parts of the district were choice as sampling areas. Placing plots were purposive sampling. From the sampling areas was noticed of species to compute the IV (Importance Value). The result showed that there are eight dominant species from the investigation areas, namely Dendrobium crumena anum swartz, Gymbidium pubescers hindl, retnsa (L.) B1., Dendrobium onosmum hindl., Epidendrum radcons Par. They are epiphyts, and some are terreshrials nancly: Calonthe veratrifolia R.Br., and Spathoglathis phicata L. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 7-11 |
| Abstraksi Narasi | : | It has been studied a formation of ion association of phenantrolinium tetrachloroaurat (III) in dichloroethane and cesium tetrachloroaurat (III) in methyl isobuthyl ketone (MIBK) with ultraviolet-visible spectrophotometry. Based on the formation of these association, the two will be compared from both methods. The results showed that the method of the determination of gold with cesium chloride`s selective than phenanthrolinium chloride. Inversly, phenanthrolinium chloride`s more sensitive, and accurate than cesium chloride. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 329-334 |
| Abstraksi Narasi | : | The aim of the research is to investigate structure, composition and productivity of Cikamal grazing area of Pananjung Pangandaran, Nature Reserve, West Java. The observation was focused on fan factors, i.e plant species, plant diversity, herb productivity and biomass growth rate. Those factors were applied for herbs, shurbs and trees shala. This co community was divided into edge and center areas. Quadrant method have been conducted four subjective determined of stands and haphazard palcing of plots. Biomass growth rates were observed for twelve weeks. Within this period, the herbs were harvested. The study of herb-productivities was done after culting and allowing them herbs were dominatea by Andropogon aciculatus as both the edge and center areas, while sherbs were dominated by Euphatorium odoratum, and trees were dominated by Tectona grandis. Herb diversity indees were 2.88 at the edge and 2.28 at the center. More over, sherb diversity indexs were 1.94 at the edge and 0.80 at the center: and tree-diversity indexs were 1.76 at the edge and 0.45 at the center. Herbs biomass growth rate at the center tend to faster than at the edge of growwing area. Herb productivities were 17.51 g/m^2 / month at tha edge, and 23.99 g/ m^2/ month at the center. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 166-170 |
| Abstraksi Narasi | : | Malaria disease, caused by Plasmodium is still as a public health problem in Lampung Province. Eliminating the disease is relatively difficult because there are still many people carried the Plasmodium gametocyte, the vector and its growth suporting factors are abundan. This study is to investigate the type and stages of Plasmodium causing malaria infection in Pulau Legundi, South Lampung. The observation of blood prepar from 146 samples showed that 56,8% of children infected by Plasmodium. The plasmodium were; Plasmodium vivax 20%, Plasmodium falcifarum 78% and Plasmodium malariae 2%. The Plasmodium falcifarum counsist of 7,3% of sexual and 97,7% of asexual stages, but there was no Plasmodium malariae of sexual stages. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 17-29 |
| Abstraksi Narasi | : | Have been synthesized amides compounds from ethil p-methoxycinnamate. These compounds are p-methoxy-1-cinnamoilpyperidine and p-methoxy-1-cinnamoil-pyrolidine. This research is started from isolation ethil p-methoxycinnamate compound of kencur (Kaempferia galanga. Linn.) and continued with hydrolisis that ethil p-methoxycinnamate acid. Futhermore, p-methoxycinnamate acid is reacted with thionil chloride to give p-methoxycinnamoil chloride. Finally, p-methoxycinnamoil chloride is reacted with pyperidine and pyrolidine to give target compunds. All of compounds that are attained in the research determined their physical properties include melting point, thin layer chromatography, ultraviolet, and infrared mass spectroscopy. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 375-384 |
| Abstraksi Narasi | : | Cadmium Sulfidde Thin film has been prepared by Cadmium and Sulfide co-evaporation. To analysis the film properties it was performed by x-ray diffraction, UV-VIS Spectrophotometer and resistence measurement. The properties of the film are influenced by several parameters: substrate temperature, source - substrate distance, Cadmium Sulfide and Sulfide source distance. X-ray diffraction analysis yields that the film has preferred orientation on (002) plane and hexagonal structure. Heat treatment applied to the film at 200 degree C during deposition ebhances grain boundary, conductivity, photoresistivity, and semiconductor properties. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 257-263 |
| Abstraksi Narasi | : | Development of inbreds on maize is important since inbreds selected for favorable traits are utilized to recombine as F1-hybrids. Evaluation on Self-1 (S1) lines assists a breeder to identify lines that differentiates from parental lines since S1 lines segregategreatest. In a study accomplished in Bandar Lampung, January --- April 1998, ten S1 lines derived from eight commercial-hybrids and two open-pollinated population of four pedigrees were used: Pioner (P2, P3, P4, and P5 hybrids); Cargill (C2 and C3 hybrids); Charoen Pokphand Indonesia (CPI-1 and CPI-2); Arjuna (Arjuna Sanghyang Sri and Arjuna Bisi open-pollinated populations) evaluated for seed traits: rate of seed fill (LPB; mg.seed^-1.day^-1), duration of effective seed fill (LPBE; day), seed size (mg.seed^-1), and seed yield (g.m^-2) for each S1 line. This study revealed that the segregation of LPB, LPBE, seed size, and yield followed Mendelian segregation for quantitative-trait inheritance; LPB, LPBE, and seed size indicated a genetic additivity due to homozigous loci, whereas yield that controlled by multiloci interaction (epistasis) and inlfuenced by environment indicated an inbreeding depression although just in S1 generation; and there was an opportunity to utilize the segregation of seed traits as a guide for the selection of inbred lines. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 314-319 |
| Abstraksi Narasi | : | This experiment was aimed to study the effect of interaction between Rhizobium strains, mikoriza VA and peanut plant on nodulation and peanut plant growth. The peanut plant was inoculated with six strains of Rhizobium, mikoriza VA strain Gigasspora margarita, and fertilized with urea or TSP as a control. Interaction of Rhizobium F-2 strain with mikoriza resulted in highest efficiency of nitrogen fixation and phosphat absorption. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 171-178 |
| Abstraksi Narasi | : | During development, kidney of larval Rana catesbeiana weight reached 1.2% of their body weight and decreased its size up to 0.25% of their body weight. In order to understand the cause of this change we tried to determine the protein and DNA composition as well as the protein synthesis in the developing kidney. Even though there was fluctuations on the weight of DNA/g of body weight, the number of fluctuation was not statistically different. The mean DNA weight was 4 mg/g of kidney tissue. Three different staes development (T-K V, XXIV, F1w) had much higher DNA/g tissue weight, (x = 6 mg/g, p < 0.05). The protein content showed an increase starting at the early climax (T-K XXI and T-K XXIV), 59.1 ± 5.8 and 128 ± 28.6 mg/g, p < 0.001, compared to the stages development less than T-K XX (x = 39.24 mg/g, p < 0.05). The protein content per g of DNA in kidney tissue during metamorphosis changed significantly right after preclimax, with the ratio protein/mg DNA, of stages T-K < XX, XX--XXIII, and --F7w), respectively 9.67 ± 0.45,13.19 ± 0.11, and 0.18.87 ± 0.94 (p < 0.01). Labelled thymidine incorporation to determine DNA synthesis was used to study the contribution of cell proliferation related to the change in kidney weight. |
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