| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 385-392 |
| Abstraksi Narasi | : | Research on seismic signal of volcanic earthquakes of Mt Krakatau has conducted. Seismic signal can be classified into four group based on the shape of signal in the time domain. The frequency domain. Analysis show the signals wer commonly spread on between 0.63 Hz and 2.5 Hz. And the hypocentre of earthquakes are approximated by analysis of space, by using analysis of particle motion in three component direction. Collection data used MARS-88 and seismic station of Volcanology Indonesia, and it was completed by notebook computer and GPS. The data were processed by Pitsa program in order to get shape of signal in the time, frequency and space domain. This data wer earthquakes eruption period 1992-1994. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 1-6 |
| Abstraksi Narasi | : | It has been studied a formation of ion association of cesium tetrachloro aurat (III) in methyl isobuthyl ketone (MIBK). Based on the formation of these association it has been developed a method for determination of gold by ultra-violet-visible spectrophotometry at 331 nm. The method is applicable in the range of tetrachloroaurat (III) acid concentration between 2,5 and 35 ppm. It was also found that 200 ppm Ag(I), 200 ppm Cu(II), 400 ppm Ca(II), |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 97-103 |
| Abstraksi Narasi | : | In this research will be shown that missing data analysis by Yates approach give the expected sum of squares for error is unbiased, but the other expected value of sum of square are biased. The weakness of this approach can be improved by satterwhaite approach. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 49-54 |
| Abstraksi Narasi | : | There has been done analysis for arsen and mercury in Musi River waters in Kotamadya Palembang. The aim of the research determined distribution and pollution level of arsen and mercury from Pulau Kerto (upstream) to Pulau Banjar (downstream). Sample was taken from five stations sampling, pulau kerto, ampera bridge, boom baru harbour, sungai gerong and pulau banjar by "Clustered Random Sampling" methode. Arsen content was determined by HG-AAS batcy system, and mercury containing was done by CV-AAS batch system. Research resultent showed average containing of arsen in musi river waters was 20.15 ng mL^-1 with concentration range was 18.08 - 21.40 mL^-1, and average containing of mercury was 1,34 ng mL^-1 with concentration range was 0.56 - 2.65 ng mL^-1 Distribution of arsen from lower course to end course was tend to increase while distribution of mercury from lower course to end course was vary, which the highest concentration was surromunding of ampera bridge. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 320-328 |
| Abstraksi Narasi | : | Some experiments show that the activity of tamoxifen on wome animals mixed are not similar, it can be estrogenic or antiestrogenic. Tamoxifen has an estrogenic activity as seen on newborn guinea pigs and female mice. This means that tamoxifen can be accepted by estrogen reseptor and can be enhance polymerase RNA activity in nucleus, eventhought this activity not as much as estrogen does. On the other hand, tamoxifen has an antiestrogen activity. On chick oviducts, this is because tamoxifen can be potentially antiestrogen by hidroxylated to monohidroxytamoxifen thus unable to activited polymerase RNA as in chick oviducts. If it is applied in the short time, tamoxifen can give astrogenic activity, and vice versa as figured out on mice. This is because in the short time tamoxifen enhances the protein siantesis on target cell, but unable to enhance receptor sinthesis as estrogen does. Because the bond tamoxifen and estrogen receptor stay longer in nucleus cause the number of sitoplasma receptor decrease. From the study above, it can be concluded that tamoxifen can be used as component of breast cancer drugs, but its side effect need tobe more studied. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 175-182 |
| Abstraksi Narasi | : | Brassinolide is a plant growth regulator (PGR) composed of steroidal compounds, and its finding is relatively new compared with the group of auxin, cytokinin, gibberellin, absisic acid and ethylene. Many studies on biosynthesis, chemical properties and physiological roles of brassinolide in plant growth and development have been reported. At relative low concentrations, brassinolide is ver effective to stimulate plant growth and development. However, the application of brassinolide as an alternative technology to increase crop yield is still controversial. Information about agronomical potency and its problem could lead to better understanding of brassinolide use in crop production system. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 205-214 |
| Abstraksi Narasi | : | Translation termination in Saccharomyces cerevisiae cell does not occur like in prokaryotes sell. Saccharomyces cerevisiae is mediated by two proteins eRF1 and eRF3, coded by SUP45 (SAL4) and SUP35 (SAL3) genes. eRFI protein can not function without eRF3 mediation. Interaction between the two proteins an interaction between eRF1 and ribosom are not completely understood. For studying translation termination mechanism on eukaryotes system, Saccha-romyces cerevisiae is used as a model. For studying function structure of eRF1, sal4 mutans have been constructed through mutagenesis in vivo by using mutagen EMS Biochemical analysis through allosuppressor level of hypersensitive paromomysin mutants of sal4 indicates the existing of abaupt variation among the mutants. This phenomenon indicates the existing of various location of mutations. Biochemical analysis by auxotrophic test is intended to know the influence of mutation toward auxotrophic characteristics of sal4 mutants. To know the location of mutation, it is analysed by molecular genetic: cloningsal4 mutants with allele rescue method. This cloning method is based on the capability of DNA end to recombine homogicly and using repair capability of gapped molecule. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 69-75 |
| Abstraksi Narasi | : | One of the important nutrients for pod development of peanut is calcium. The calcium deficiency could affect the development of gynophore to form pod resulting in unfulfilled pod shell of peanut. Consequently, the objectives of this study were to evaluate the formation of peanut pod as affected by calcium application and to elucidate the role of calcium application on peanut pod formation. This study was conducted in a pot experiment (1/2000 a wagner`s pot) using Tapir and Nakateyutaka peanut varieties. There were two calcium conditions, no CaCo3 application and with CaCO3 application in the fruiting zone (4 g CaCO3). The nutrient content was analyzed by ICP with sample of 0.5 g dry weight that was put into teflon. The result showed that without Ca application in the fruiting zone, the peanut plant produced 23 no. of gynophore with 69% of total gynophore. Yet, Ca^2+ application in the fruiting zone could increase the no. of gynophore up to 28.3 with 89% mature pod of total gynophore. Additionally, under no CaCO3 application, the content of Mg^2+ and Ca^2+ in pod shell decreased 23 and 41%, respectively over CaCO3 application. This indicates that calcium might induce the pod formation which leads to the increase pf pod weight and seed weight. Moreover, it was elucidated that calcium in the fruiting zone has probably important role on the peanut pod formation. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 131-136 |
| Abstraksi Narasi | : | Hikam and Yuliadi (1996) have derived a maize cultivar of synthetic Unila-1 as a progeny of intermated 10 Self-2 lines derived from 10 commercial maize hybrids. The multiplication of class of Foundation Seed was done in the dry season May-August 1999. In the multiplication, the Foundation Seed was grouped into three genotypes: (1) large seed, (2) small seed-one ear, and (3) small seed-two ear. The grouping was referred to the demand of user-farmers that prefer small seed-two ear genotype. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 251-260 |
| Abstraksi Narasi | : | Missing observations in split plot design create many analysis problems. In this article, we consider the problems for a split plot design with missing some observations. The size of the design matrix are considered, to know weather the model with missing data is full rank. |
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