Judul: Karakterisasi, Analisis Minyak Atsiri dan Antioksidan Adas (Foeniculum vulgare Mill.) di Taman Nasional Bromo Tengger Semeru
Abstrak: Fennel is one of the important herbs commodities that traded in the world, due to its extensive use in culinary, cosmetic and pharmaceutical industries. Fennel is not wide cultivated in Indonesia and grows wild in many mountainous areas in Java. Bromo Tengger Semeru National Park (BTSNP) is one area that overgrown by wild fennel. The research had been conducting from March 2013 until January 2014. Characterization has done at Bromo Tengger Semeru National Park, East Java by gradually-random sampling method, contains oil and antioxidants were analyzed using GC-MS and DPPH method. The characterization results showed fennel BTSNP has the morphological and agronomic characters that similar to the fennel that had been cultivated. Fennel of BTSNP has oil content reaches 4.17% and anethol content reaches 79.79%. Fennel of BTSNP has an antioxidants with IC50 10.4 mg mL-1 with free radical inhibition rate reachs 28.25%. Based on the high content of fenchone in fennel fruits (13.99%), fennel of BTNSP included as varieties of vulgare
Keyword: Foeniculum vulgare, fennel, essential oils, characterization, antioxidant

Judul: Karakteristik Sifat Fisiko Kimia dan Analisa Profil Deskriptif Flavor Minyak Biji Adas (Foeniculum vulgare Mill)
Abstrak: Tariarnari adas merupakan salah satu tariaman obat dan penghasil rriiilyak alsiri yang belum banyak meridapat perhatian. Manfaat dari kliasiat tarlamati irri lelah lama digunakatt secara tradisional sebagai obat dar~ penyharum masaka11k are~iaa )-oniatiyay arig saltgat liar-um. Pada penelitian ini diyunakan biji adas yang telah dikeringlca~t yaiiy diperoleli dari I(ebu11 Percobaati Balai Perielitian Tanarnan Rempah dari Obal yari(4 teidapat dr Gunurlg Pulri, Gipaiias. Pada tahap awal dilakukan periyulirigan minyak biji adas uritilk rnerIyetahui rendemen yariy diliasilka~i. Kerriudiari mitiyak yarig diliasilka~: tersebut dianalisa sifat fisiko kimianya untuk rnengetahui kemur~liari dari r;;uturiya uiltuk seiarjutl1ya diideilttfikasi dan dideskripsikan ltornpolier!- Itompotieti penyusun minyak biji adas. Berdasarkan hasil aiialisa sifat fisik dari kimia, didapat baliv/a minyak biji adas yalig dillasilkart derlgati metode petiyulingan uap selama 3 jam iiiernilik~k ualilas atau iriutu yarig cukiip baik seliitigga miriyak tersebut dapal diailalisa Lebil.1 la~~jigltu tla mengidentifikasi dan mendeskripsikari komponei! ar'uma i~iiriyaici- ~ijai das. Dari kromatogram krornatografi gas (GC) dapat diidetitifikasi 14 ir~acani koinporieri penyusvn mi!!yak adas; yaitu g~loiigari ii~oiio'rerperl (9 !:.ompo!!eri), ;)lieiiol (2 komponeii) dari golorigan keton (3 komporien). Yang tert~iasuk goiongall phenol adalah anelo! dan iso arletol yalrg berkontribusi paling besar yaitu 58.52%; galongan monoterpen terdiri dari cu-pinen (3.0%), [Lpi!ien (1.29%), (3-myrcene (0.89%), camphetie (0.33%), (7,-limonene (3 59+,!/: piieilandrene (0.48%), p-cymene (0.22%), cr.-terpinolene (0.16°h), 4-carena (!.30%); sedangkari golu~tgan kelon yarig berliasil diidentifikasi adalah dcarnphore (D.35%), fenchorie (26.7%) dari 3.tliujene (0.38%). Deiigaii menggunakan kromatografi gas- oliaktometri (GC-0), aroma kornpoi~en-kornponeri tersebut dapat dideskripsikan. Komponen-komponeri yarig ber1;asrl dideskripsikar~ aromariya adalah u.-pinen ( P I I ) ~ , ~voo(Yy), pmyrcene (niarigga muda), linio~ieri (citr~ls dari sweet), terpinolene (minyak ianaiii, cyrnerie (s:weef. irility, rumput), arietllol (sweet, iiangat, biji adas kuat. rneiiyeriarigltanj, phellandrene (herba), carnphore (pedas, hangat), fenchnne ibau obat, palill) Dari iiasil deskripsi tersebut, tarnpak baliwa walaupi~n aiietol barkontribusi paling besar sebagai komponen pen)fusurl rninyak aaas, i~arnui~a rcma khas adas dibentuk dan dikarakterisasi ole11 sejumlali kotnpoii~n-Iiompcl~peeli~\y usunl>ya.
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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