Judul: Penyusunan model penduga produksi daun kayu putih(Melaleuca leucadendron Linn.) di KPH Mojokerto Perum Perhutani Unit II Jawa Timur
Abstrak: Tegakan kayu putih (Melaleuca leucadendron Linn.) merupakan salah satu tegakan yang dikelola oleh Perum Perhutani di Pulau Jawa. Hasil dari tegakan kayu putih ini adalah daun kayu putih yang merupakan penghara bagi industri minyak kayu putih. Minyak kayu putih yang dihasilkan dari proses penyulingan daun kayu putih ini mempunyai banyak kegunaan, antara lain sebagai obat sakit perut, masuk angin, sakit kepala, sebagai obat gosok, ekspektoran dan sebagai salah satu bahan baku industri parfum. Dalam dunia perdagangan, minyak kayu putih dikenal dengan nama Cajuput Oil). Karena banyak kegunaannya dan sudah dikenal secara meluas, maka minyak kayu putih ini mempunyai potensi ekonomis. Potensi ekonomis ini perlu didukung oleh perencanaan produksi dalam jangka panjang yang cukup matang sehingga hasilnya memuaskan. Untuk meningkatkan potensi ekonomis minyak kayu putih ini antara lain perlu meningkatkan faktor-faktor perluasan areal tanaman, mutu penyulingan, mutu minyak dan produksi dari tegakan kayu putih. Dalam kaitannya untuk pendugaan produksi dari tegakan kayu putih ini perlu diteliti dan diidentifikasi faktor-faktor yang mempengaruhinya. Menurut Soepardi (1953), produksi daun kayu putih dipengaruhi oleh kesuburan tanah, iklim, cara pemeliharaan dan umur tanaman. Selain faktor-faktor di atas, faktor-faktor lain yang diduga berpengaruh terhadap produksi daun kayu putih adalah umur pangkasan daun, diameter batang, diameter tajuk dan faktor jumlah cabang utama. Masalah yang dihadapi dalam penelitian ini adalah untuk mengetahui faktor- faktor yang mempengaruhi produksi daun kayu putih dan sejauh mana peran faktor- faktor tersebut dalam menduga produksi daun kayu putih....
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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: Light Microscope Study of ConnectiveTissue in The Spleen of Common Rousette Bat (Rousettus amplexicaudatus)
Abstrak: The spleen is the largest lymphoid organ. As a secondary lymphoid organ, in addition to its immune function, the spleen also has functions as blood filtration, storage, and hematopoiesis. The spleen has different morphologies between species that support different physiological functions, one of which is the difference in the structure of the capsule and trabeculae. Capsule and trabeculae of the spleen generally consist of connective tissue and smooth muscle. The thickness of smooth muscle composed together with connective tissue in the capsule and trabecula determines the function of the spleen that is divided spleen into three storage, defense, and intermediate. Bats are the reservoir of various zoonotic diseases. Bats are thought to have unique immune systems compared to other mammals but the characteristics of its immune organs such as the spleen have never been studied before. This study was conducted to examine the characteristics of capsulae and trabecula of the Common Rousette (Rousettus amplexicaudatus).
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