| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 234-240 |
| Abstraksi Narasi | : | A picture (graph) can only be created on a picture plane. The plane can be built in two or three dimensional coordinates. There are many possibilities to obtain this plane on three dimensional plane. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 58-62 |
| Abstraksi Narasi | : | The experiment was conducted in experiment garden of INPPTP Taman Bogo (East Lampung). Twelve upland rice cultivas were tested from November 1998 until April 1999. Treatments was arranged in a randomized block design with four replications. The result showed that some cultivars from Taman Bogo like C,E,F, and L gave high growth and yield component, where as cultivas D (S 3385.SE.16-3-2) was the lowest performance. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 35-40 |
| Abstraksi Narasi | : | The objective of this study is to ascertain the effects of polyester sling scrotal in healthy men on the integrity of sperm membrane. This prospective study consisted of 2 phases, i.e., a control phase and treatment phase trial. Ten normal healthy volunteers used polyester sling scrotal cover all day and night for 24 weeks. Semen was analyzed at a 3-week interval. The results showed that within 24 weeks integrity of sperm membrane decreased to below normal range in all subjects. We concluded that polyester sling scrotal cover can suppress integrity of sperm membrane in normal men and indicated the significant result (P |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 145-147 |
| Abstraksi Narasi | : | The objective of this research is to compare the physiological characteristics of Malang apel with Washinton apel and New Zealand apel. We investigated the glucose content, total soluble carbohydrat, and respiration rate from the three kinds of apel. The result showed that the glucose content of Malang, Washington, and New Zealand is 1, 575 mg/ml; 1,815 mg/ml; 2,158 mg/ml, respectively. Total solube carbohydrate is 2,392 mg/ml; 2,522 mg/ml; 2,622 mg/ml, repectively. Respiration rate is 0.04 ml/10 menit, respectively. The proportion of glucose over total solube carbohydrate is 66,66%; 73,81%; 80,52% respectively. The glucose content of apel fruit is controlled by the activities of enzyme invertase and respiration rate. It seem there is correlation between the low glucose between the low glucose content and high respiration rate. It necessary to do further research to understand the interaction between invertase activity and respiration in regulating fruit metabolism. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 81-85 |
| Abstraksi Narasi | : | Growing canopy trees could be estimated to reduce air pollution by absorbing gasses. There were some plants have been tested their abilities to absorb the pollution gasses at Raja Basa bus station. Some air pollutants could be absorbed by plant through their leaves. Therefore determining which of plant species is the most effective in controlling air pollution at Raja Basa Station have been conducted by observing plant ecology, morphology and physiology in April-July 1998. The analyzes of t-student have been done to compare the control area (Poncowati village, Terbanggi Besar) and Raja Basa area. The result shows that Raja Basa station have trees dominated by five species which are good enough to be canopy trees and could reduce pollution gasses. Jarak cina (Jatropa gossypifolia) is the most effective in controlling air pollution followed by waru (Hibiscus tiliaceus), mahoni (Swietenia mahogani), akasia (Acacia auriculiformis) and angsana (Pterocarpus indicus). The diversity of canopy trees is reommended to provide a good landscape. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 15-19 |
| Abstraksi Narasi | : | Drosophila is a very useful and very popular organism for teaching the basic laws heredity. In order to use this creature properly, required good knowledge about it. Some researches show that for different places have been found different species of Drosophila. This research focuses on identification of species and potencial reproduction of genus Drosophila found in Kota Madya bandar Lampung. The sample was taken from 4 different locations in Kota Madya Bandar Lampung. According to its sexs comb, it has been identified 3 species Drosophila i.e Drosophila melanogaster, Drosophila eugrachilis, and Drosophila trilutea. In term potencial reproduction D. melanogaster was the best with cycle length 71 hour and 47 minute, rate off spring was 385!2,6, and ratio of male: female = 1:1,51. The second was D.eugrachilis with length of cycle 97 hour and 58 minute, rate off spring was 253!2,4, and ratio of male: female = 1:1,4. The third is D. trilutea which has cycle length 111 hour and 13 minute, rate of spring was 235!2,9 and ratio male: female = 1:1,7. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 317-328 |
| Abstraksi Narasi | : | An experiment to identify sound of acoustic guitar`s note and it`s visualization into musical staff according to a standard music codification had been designed. Sound of acoustic guitar`s string was recorded with sampling frequency of 22.1 kKz. Results of Discrete Fourier Transformation show there was a dominant requency in their individual spectrum, which can be used as an identification frequency. Identification of note with it`s a dominant frequency can be done using 512, 1024 or 2048 samples. The note of acoustic guitar`s string was interpreted fit to a value of arranged staff by using a table of relationship between frequencies and musical staff. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 302-308 |
| Abstraksi Narasi | : | The central force which always points to the center of any orbitals is dependen on the distance of each orbit to its centre. It is much easier and more understanable if the polar coordinated system is used in order to developed the formula of central force movement. This formula of the system will be functional relationship among the coordinate (r), time (t), and energy (E). |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 273-280 |
| Abstraksi Narasi | : | We applied Lagrange and Hamilton formulation on the motion of charge particle at the Electrics and Magnetism field area. This particle had mass, vilocity, and potencial, and obtained of the motion of classical mechanics formulation. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Jurnal Penelitian Sains dan Teknologi |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 168-174 |
| Abstraksi Narasi | : | As a source of energy and it`s limitation of growth as wel as production of the plant, the higner intensity of light radiation will be nessary needed for maximum photosynthesis. Beside that, the total production as an effect of the rate and the length of photosynthesis will be affected the environmental factors, namely air, oxygen, carbondioxide, nutrient, and temperatures. The maximum condition of the plant structures may also affect the efficiency of plant production system. The leaf position, in angle form will be more efficient compared to those in flat form. Thus, it is suggested to the plant breeder to develop ideotype of plant base on morphological and physiological characteristics. |
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