Judul: Analisis Kultivasi Jamur Kuping (Auricularia sp.) pada Log Kayu dan Ranting Sengon, Jabon dan Jati
Abstrak: One of the alternative media for ear mushroom (Auricularia sp.) cultivation is by using cutting wastes of log and twigs. The objective of this research is to analyze the potency of ear mushroom cultivation by using log and twigs from three species e.g sengon (F. moluccana), jabon (A. cadamba) and jati (T. grandis). This research is completely randomized design with 8 treatments of logs and twigs from the trees species, baglog from sengon sawdust nutrition given (BIO) and sengon sawdust only (CS). Fresh weight of ear mushroom from jabon stem (171.4 g) was higher than other treatments, except BIO treatment (248.4 g). Biology efficiency (EB) of jabon twigs (39.8%) is significantly higher than the other treatments, except for BIO treatment (67.6 %). The average of harvesting time of teak log (36 days) and teak twigs (34 days) were significantly higher than the other treatments. The results clearly showed that log and twigs from that three species could be used for ear mushroom cultivation media to substitute the use of sawdust.
Keyword: T. grandis. Cultivation media, F. moluccana, Auricularia sp., A. cadamba

Judul: Cultivation of Two Edible Mushrooms on Wood and Branches of Sengon (Paraserianthes falcatraria), Moringa (Moringa oleifera), and Kicopong (Cecropia peltata) Branches., Cultivation of Two Edible Mushrooms on Wood and Branches of Sengon (Paraserianthes falcatraria), Moringa (Moringa oleifera), and Kicopong (Cecropia peltata) Branches.
Abstrak: Jamur tiram (Pleurotus ostreatus) dan jamur kuping (Auricularia auricula) termasuk jenis jamur pangan yang banyak dibudidayakan. Saat ini, dibandingkan jenis kayu sengon (Paraserianthes falcataria), kayu kelor (Moringa oleifera), dan kayu kicopong (Cecropia peltata) merupakan jenis kayu yang penggunaannya masih cukup rendah. Penelitian ini bertujuan menganalisis potensi kayu sengon, kelor, dan kicopong (batang dan ranting) untuk kultivasi jamur tiram dan jamur kuping. Penelitian menggunakan rancangan acak lengkap (RAL) dengan dua faktor yaitu jenis media dan jenis jamur. Jenis media adalah log dan ranting serta baglog sebagai pembanding. Hasil penelitian menunjukkan bahwa jamur yang dikultivasi pada media baglog memiliki hasil yang tertinggi dibanding log dan ranting. Jika dilihat dari media batang dan ranting, ketiga jenis kayu memiliki potensi yang baik sebagai media kultivasi jamur, dengan kicopong sebagai media terbaik. Hama dan penyakit yang cenderung mengganggu pertumbuhan kultivasi jamur adalah jenis Stemonitis sp. dan Corpinus sp., Oyster mushrooms (Pleurotus ostreatus) and ear mushrooms (Auricularia auricula) are among the most widely cultivated types of food mushrooms. At present, compared to sengon wood (Paraserianthes falcataria), kelor (Moringa oleifera), and kicopong (Cecropia peltata) wood are types of wood whose usage is still quite low. This study aims to analyze the potential of sengon, moringa, and kicopong (logs and twigs) wood for the cultivation of oyster mushrooms and ear mushrooms. The study used a completely randomized design (CRD) with two factors, namely the type of media and the type of fungus. Types of media are logs and branches and baglogs for comparison. The results showed that fungi cultivated on baglog media had the highest yield compared to fungi that were cultivated on logs and twigs. When viewed from the stem and twig media, the three types of wood have good potential as a medium for mushroom cultivation, with kicopong as the best medium. Pests and diseases that tend to interfere with the growth of fungal cultivation are Stemonitis sp. and Corpinus sp.
Keyword: Auricularia auricula, Cecropia peltata, Moringa oleifera, Paraserianthes falcataria, Pleurotus ostreatus

Judul: Kekonsistenan Hamiltonian pada Gerak Gelombang Interfacial
Abstrak: The interfacial wave is an internal wave that occurs at boundary of two layers fluid. It appears because there is difference of mass density between the two layers. The objective of this thesis is to formulate the motion of internal wave with flat base and flat as well as free upper bound surface. The motion equation obtained is a Hamiltonian system. The Hamiltonian in this system is expressed by variable of wave deviation and horizontal component of potential velocity. Under assumption that interfacial wave moves only in one direction, it can be shown that the Hamiltonian depends on the solution of the wave motion equation. The coefficients of the equation depend on the physical characteristics of the two layers of fluid, i.e. thickness and mass density. The numerical results show that Hamiltonian in the system is constant. It is consistent with Hamiltonian characteristic, which does not depend on time.
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