| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 63-66 |
| Abstraksi Narasi | : | The effect of the length time of cooking and pressing treatment on protein ingredient of fish flour was conducted in Labuan Maringgai, East Lampung on December 1998. The treatments were the way of cooking (steaming and boiling), length of cooking period (5, 15 and 30 minutes) and pressing treatment (pressing or unpressing). The fish flour were made from the reamain of fresh fish that can not be sold because of the price. The result showed that steaming for 5 minutes and pressing have a highest protein ingredient. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 90-96 |
| Abstraksi Narasi | : | The effects of T. erecta root extract as an antifeedant for S. exigua larvae has been investigated. Antifeeding test was conducted by no choice method. The results showed that root extract which were tested on artificial diet had antifeedant activities at all concentration tested, i.e., 0.25, 0.50. 1.00, 2.50. or 5.00%. Therefore this compound could be developed as an insecticide. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 23-27 |
| Abstraksi Narasi | : | In this research, quinine acetilsalisilat has been synthesized from acetilsalisilat acid (aspirin) and quinine standard. At first, acetilsalisilat acid is reacted with thionil chloride to give (o)-asetoksi benzilchloride, furthermore (o)-asetoksi benzilchloride is reacted with quinine to give target compound. Quinine acetilsalisilat that are attained determined by ultraviolet and GC-MS analysis. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 28-35 |
| Abstraksi Narasi | : | Some ketones compounds have been studied by means of electron spectroscopy (XPS) with source of Al-K-Alpla rays. The results show that the more polarizable molecule will increase the relaxtion energy which causes a corresponding decrease in electron binding energy and correlation between connectivity number and core ionization energy is only rough, however, it is a better correlation by subdividing the ketones into several categories based on the molecular type. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 76-80 |
| Abstraksi Narasi | : | Lophobaris serratipes is one of the main spice stem bores. Generally Methods for controlling its populations use insecticides. However continual insecticides application leads to population resistance. Based on this reason, there have been done a study on resistance of L. serratipes to some slected insecticides. The results showed that L. serratipes of the second-generation (F2) tend to more resistant to Metidation, Endosulfan and Monorotofos than the first-generation (F1). |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 67-75 |
| Abstraksi Narasi | : | Thirty three isolates of the Physarum compressum morphospecies were subjected to a biosystematic investigation comparing their morphology with genetic variation in reproduction, isozymes, and plasmodial compatibility. Only one isolate was hetherothallic, while all of the rest were nonhetherothallic clonal populations. A dendrogram derived from isozyme banding patterns indicated that the majority of isolates were closely related to each other. Only two isolates were separated from the rest and clustered with the outgroup species. In 528 possible pairwise fusions occurred: One of the fusions was between isolates, only three fusions occurred: One of the fusions was between isolates from the same banana band, while the other two fusions occurred between isolates from adjacent regions. Interestingly, in the last two fusions the plasmodia had different isozyme patterns. Therefore, this cosmopolitan morphospecies is probably composed of a large number of related clonal lines which are apparently derived from a relatively small sexual isolates. A morphological dendrogram derived from sporangial characteristics did not correlate with the isozyme dendrogram. Apparently the morphological variations found in these isolates are mostly random genetic or developmental characters which provide little taxonomic information. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 81-89 |
| Abstraksi Narasi | : | Surfactin is one most important biosurfactans, known lowering the surface tension of water from 72 to 27 mN/m2. Production of surfactin in different method has been investigated by several researchers to increase the yield. One of the treatments for that purpose is polimer addition in cultivation system. The objective of this research was to investigate surfactin production by Bacillus subtilis ATCC 21332 in polimer (polietilen glikol/dextran) addition cultivation system. The results showed that productivity of polimer addition cultivation systems is higher than cultivation without polimer addition. The values of Yp/x, Yp/s, Yx/s, rate of surfactin production and rate of surface tension were 2.175 g/g,1.193 g/g, 23.25 g/g and 1.28 dyne/cm/h respectively in polimer addition cultivation. It was found that values of Yp/x, Yp/s, Yx/s, rate of surfactin production and rate of surface tension in cultivation without polimer addition were: 346.1 mg/l, 2.175 g/g, 1.193 g/g, 0.031 g/g 23.25 mg/l/h and 1.28 dyne/cm/h respectively. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 54-61 |
| Abstraksi Narasi | : | Differential equation can be used to find the trend of change in economics problem. A function which describe input-output relation in economics is called production function. Production function Cobb-Douglass (C-D) and Variable Elasticity of Substitution (VES) have a shape and relation among difference variables. The application of the approach are discussed based on Biro Pusat Statistics data. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 44-52 |
| Abstraksi Narasi | : | Translog Cost Function is a part of cost function with the production constrain in the form of translog function. This function is the flexibel function among the other function, because it can test the structure function statistically. The regression result shows the fenomena of decreasing demand for worker in the industrial sector 384. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 36-42 |
| Abstraksi Narasi | : | Impression materials have to be produce an accurate reproduction of the object. An understanding of Chemistry structure, physical and mechanical properties and manipulation of the impression material is necessary for the successful use of this material. One rubber impression material that capable to produce an accurate impression is Polysulfide rubber impression material. The main ingredients of this material is Polysulfide polymer and Titanium dioxide filler to improve the strength of material. The reaction proceeds as condensation polymerization type producing chain extension and cross linking with liberation of water. High flexibility and good viscoelasticity indicates theability of the impression material to withstand tearing in undercut area without rupture. Permanent deformation and contraction American Dental Standard Specification and can be compensated by making an impression with a double impression technique procedure. |
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