Judul: Domestikasi ulat sutera liar (Attacus atlas L.) dengan pakan daun jarak pagar (Jatropha curcas L.) dan sirsak (Annona muricata L.)
Abstrak: Domestication of the wild silk moth is an adaptation process of caterpillar to become domesticated silk moth in response to food and culture room environment. It was expected to raise the population of A. atlas to develop economical sericulture for human life. As consequences, the moth has to be well maintained by providing food and controlling the reproduction. A pure strain which is more adaptive with good quality of coccon and filament was envisaged to be obtained by feeding the moth with purging nut and soursop leaves continuously. The objective of this research was measuring the success rate of A. atlas domestication on purging nut and soursop leaves. The parameters observed in this research included: sex ratio, mating moth, egg collection, larval rearing, cocoon harvesting and the moth life cycle in response to different types of fed. The egg productivity ranged from 27-342 eggs /female parental. Oviposition was observed between 3-7 days. Egg incubation was at the range of 8-10 days. The duration of larval stage feed on purging nut was about 30-40 days, while on soursop was about 34-47 days. The duration of pupa stage fed by purging nut leaves was about 30 days (males), while on soursop was about 30-32 days (males), 33 days (female). The survival rate of domestication utilizing both types of feed was not yet optimum due to the environmental and biological constraints.
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Judul: Biologi Attacus atlas L. (Lepidoptera: Saturniidae) dengan pakan daun kaliki (Ricinus communis L.) dan jarak pagar (Jatropha curcas L.) di laboratorium.
Abstrak: The wild silk moth A. atlas L. is being tried for sericulture in Indonesia. The objectives of this research to find out the feeding consumption, the larvae growth, life-cycle, cocoon and filament quality in A. atlas which is raised inside a room. This research was conducted from March 2007 to May 2008. The research comprises two steps: First, analytical proximate castor (R. communis L.) and purging nut (J. curcas L.) leaves; second, silk moth treatment which is done in the laboratory of Molecular Biology PPSHB IPB. The elements used in this research were: cocoon A. atlas and three types of leaves, which are, sirsak (A. muricata L.), castor and purging nut. The research uses Completely Randomize Design. The data resulted is analyzed by Analyze of Variance proceeded by Duncan Tes. The analyzed parameter is feeding consumption, life-cycle, larvae growth, cocoon and filament quality. The total largest food consumption on the larvae feeding on purging nut leaves is 155.09±0.68 g. The increase of larvae’s length and weight is not really present. The shortest life-cycle happen in larvae feeding on castor (60.80±8.37 days). The highest floss and weight decreasing along the cocoon process happens on larvae feeding on castor (66.22±5.85 %) and purging nut (64.53±4.18 %) leaves. The highest cocoon (9.46±1.70 g) and cocoon skin (1.74±0.79 g) weight are on larvae feeding on sirsak leaves. The percentage of cocoon silk does not differ much. The highest cocoon filament length is on the larvae feeding on sirsak leaves (146.84±138.83 m). The cocoon filament weight does not significantly different much. The lowest cocoon distangling capacity is on larvae feeding on castor leaves (12.20±6.65 %). Sirsak leaves feeding on the larvae is superior in filament and cocoon quality, castor leaves feeding on larvae is superior in the fastest life-cycle, and purging nut feeding on the larvae is superior in the largest feeding consumption.
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Judul: Peluang Partikel Plasma Berada Pada Dimensi Debye Akibat Gangguan Gelombang Elektromagnetik dengan Menggunakan Persamaan Schrödinger
Abstrak: The solution of Schrodinger equations with plasma Coulomb potential in spherical coordinat results solution wave function and energy plasma particle. Electron probability density at Debye length with thermal effect same as ion, which indicates plasma in neutral state. Electromagnetic waves perturbation of an electric field given to result wave function perturbation system. The probability density of plasma particle due to electromagnetic waves perturbation is the largest when an electromagnetic waves frequency 1.41 times the plasma frequency .
Keyword: Schrödinger, plasma, electromagnetic wave