Judul: Effect of Feeding Some Kinds of Mulberry Leaves (Morus spp.) to the Growth of Wild Silkmoth Attacus atlas L.
Abstrak: Attacus atlas is one of wild silkmoth which has higher economic value than domestic silkmoth Bombyx mori. Attacus atlas is polyfage insect which means it has more host plants even from different family. So, there is possibility that mulberry plant can use as food plant for A. atlas. This study aimed to customize feeding on A. atlas with mulberry leaves as feed and to know the effect of feeding with kinds of mulberry leaves to the growth and life cycle of A. atlas. The cocoon was collected from tea plantation in Purwakarta. Fertile eggs from mating imago was hatched. First instar was fed with four kinds of Mulberry leaves such Morus multicaulis, M. alba var. Kanva 2, M. cathayana and M. bombycis var. Lembang. All of reared larvas could not complete its life cycle. Larval fed with M. alba var. Kanva 2 only survived until first instar and could not moult. Larval fed with M. multicaulis survived until second instar. Larval fed with M. cathayana and M. bombycis var. Lembang survived until third instar. The highest percentages of survival had been achieve by larva fed with M. bombycis var. Lembang, that were 56,63% for first instar and 7,80% for second instar. Keyword : Attacus atlas, mulberry leaves, larval growth
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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