Judul: Inventarisasi Informasi untuk Mendukung Budidaya dan Pemanfaatan Pohon Kayu Putih (Melaleuca cajuputi Powell) di Indonesia
Abstrak: Kayu putih (Melaleuca cajuputi Powell) merupakan salah satu jenis pohon yang memiliki banyak manfaat terutama pada olahan minyak atsiri. Minyak atsiri diperoleh dengan cara disuling daunnnya. Penelitian terkait pohon kayu putih telah banyak dilakukan, tetapi belum terdata dengan baik, sehingga tidak diketahui aspek apa yang telah diteliti secara lengkap dan aspek apa yang kurang. Penilitian ini bertujuan untuk mendapatkan informasi jumlah dan sebaran aspek penelitian terkait pohon kayu putih di Indonesia dan menganalisis kecukupan informasi tentang pohon kayu putih untuk mendukung pengembangan hutan tanaman kayu putih di Indonesia. Berdasarkan hasil inventarisasi penelitian tentang pohon kayu putih di Indonesia, terdapat total 73 publikasi. Hasil tersebut dibagi kedalam 8 aspek, yaitu perbenihan, persemaian, penanaman, pemeliharaan, pemuliaan, pemanenan, manfaat dan produksi. Dari hasil penelitian ini dapat disimpulkan bahwa penelitian-penelitian terkait pohon kayu putih belum mencakup 8 aspek yang dikaji dan belum memenuhi kebutuhan untuk pengembangan hutan tanaman kayu putih di Indonesia., Kayu putih (Melaleuca cajuputi Powell) is one type of tree that has many benefits, especially in the producing of essential oils. Essential oils are obtained by distilling the leaves. There have been many studies related to kayu putih trees, but they have not been well recorded, so it is not known what aspects have been studied in full and which aspects are lacking. This study aims to obtain information on the number and distribution of research aspects related to kayu putih trees in Indonesia and to analyze the adequacy of information about kayu putih trees to support the development of kayu putih plantations in Indonesia. Based on the results of an inventory of research on kayu putih trees in Indonesia, there are a total of 73 publications. The results are divided into 8 aspects, namely seeding, nursery, planting, maintenance, breeding, harvesting, benefits, and production. From the results of this study, it can be concluded that studies related to kayu putih trees have/have not covered the 8 aspects studied and have not fulfilled the need for the development of kayu putih plantations in Indonesia.
Keyword: Aspect, Kayu putih, Kayu putih oil, aspect, kayu putih, kayu putih oil

Judul: Model produksi daun pada hutan tanaman kayu putih (Melaleuca cajuputi subsp. cajuputi Powell)
Abstrak: Cajuput oil is one of important non-timber forest product in Indonesia, which is resulted from processing of kayu putih (Melaleuca cajuputi Subsp. cajuputi Powell) leaves. Perum Perhutani now managed about 24,000 hectars of kayu putih plantation in Java and 10 units of leaves processing mills with installed capacity of 53,760 tonnes per year. However, these mill were underutilized due to low leaves kayu putih production. The objective of this study were: (1) to develop kayu putih leaves production model, for one leaves harvesting rotation, and (2) to determine a silviculture rotation age of kayu putih stand. Subject to field condition, number of tree, stand density, and biomass by part of tree from 36 temporary sample plot (TSP) of Age Class II at BKPH Sukun were them measured to develop kayu putih leaves production model and from 24 TSP of all Age Class (Age Class I – VIII) at BKPH Sukun were measured to determine a silviculture rotation age. Anaysis of oil and and sineol contens as well as some characteristics of cajuput oil were also conducted. The result show that Morgan-Mercer-Flodin (MMF) equation was found as the best model in representing kayu putih leaves production model, with option sprout age of 7 months. A silviculture rotation age was estimated around 25 years (with Age Class V) using as stand maximum productivity as a proxy.
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Judul: Analisis Bifurkasi Fluxon pada Persambungan Josephson Bertipe Superkonduktor-Feromagnetik-Superkonduktor (S/F/S)
Abstrak: Dynamics for the Josephson junction of type S/F/S is different from ordinary Josephon junction, where on the junction is contained the addition of tribal sin 2φ which is the result of the second harmonic supercurrent on the Josephson junction of type S/F/S that is related to Shapiro Steps symptoms. Research has been done is analyze the fluxon bifurcation to determine the stability of the fluxon in a Josephson junction of type S/F/S. The analysis was done by using the approach of analytically dynamics system and assisted by numerical solution that uses the application ODE 45 on MATLAB. The result of the critical point and the bifurcation types which is obtained to show the normalized damping (β and ϳₑ) does not affect the change of fluxon stability at the limit of less than one. Parameter β only affects the type of critical point and bifurcation that occurs, if β = 0, for ϳₑ = 0 and ϳₑ = 0.4 the bifurcation occurs is a saddle-center, and if β = 0.5 the bifurcation is a saddle-focus. Parameter ϳₑ affects the amplitude on the generated fluxon oscillation, if ϳₑ = 0 the fluxon amplitude is very small, whereas if ϳₑ = 0.4 the amplitude is larger. In each case, the fluxon stability is affected by the first harmonic supercurrents which is different sign, those are when ϳ₁ < 0 the fluxon is always stable, whereas when ϳ₁ < 0 fluxon is unstable at first but it tends towards to the point of its stability.
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