Judul: Rancang Bangun Sistem Hidrolik pada Mekanisme Bongkar Muatan Transporter Trek Kayu
Abstrak: In previous research (Rudiansyah 2012), designed Fresh Fruit Bunch (FFB) transporter that using wooden track to reduce the load on the ground with low bearing capacity of soil condition or land that has a steep slope. Unloading mechanism in previous research use sliding mechanism. In sliding mechanism, bucket is pushed in order to reach the tipping point so it can be raised by an operator who is next to the bucket. In this research, FFB dumping mechanism designed using hydraulic power. The addition of the hydraulic components are expected to reduce the workload of the operator and able to improve the transport capacity of the transporter. Hydrolic design is performed by CAD software. The result of the design are actuator cylinder having a diameter of piston is 32 mm and piston rod diameter is 20 mm, length of stroke is 205 mm with total overall length is 594 mm. Hydraulic gear pumps with 11 cc capacity used to support the performance of the system. The functional part that support the main functions are frame, tub, stand pumps, direction control valves and flow reducing valve, and hydraulic tank. Performance test results showed that the recommended load is 340 kg. The time it takes actuator to lift the tub (extrusion) when empty is 1.41 seconds, but while there is a load in the tub it takes 2.35 seconds.
Keyword: directional control valve, dumping, hydraulic system, transporter, wooden track

Judul: Desain Transporter Tandan Buah Segar (TBS) Kelapa Sawit Tipe Trek Kayu
Abstrak: Harvesting activity are the important job is oil palm production. Harvesting activity of Fresh Fruit Bunch (FFB) consist of cutting, collection, and transportation. The main topic of this research wos to find alternative transporter for FFB transportation. The problem of FFB transportation from palm circle to collection point are low bearing capacity of soil condition, narrow evacuation line, and low transportation capacity. The design criteria on FBB transporter are defined as the transportation capacity is 500 – 600 Kg, the ground pressure is lower than 800 kPa, transporter wide to the soil smaller than 100 cm, the unloading process is done manually, and has a simple mechanism. The result of transporter design are the ground pressure is 34.35 kPa and transporter wide is 925 mm. The functional parts that was support the main function are chassis, bucket, bucket rail, gearbox, engine, crawler, and seat. Based on engineering analysis, the material used for the chassis and bucket rail is canal U S45C with dimension (100 x 50 x 5) mm. Based on engineering analysis, the seat framework material was using the steel pipe with the outside diameter is 50 mm and the thickness is 4 mm, the material used have σa 24 kg/mm2. The crawler refers to Setyawan (2005), the gearbox is using hand tractor Quick M1000 Alfa and the engine is Yanmar L70N. Based on RULA analysis, the simulation at some work position likes steering, and unloading having the final score 2, it is mean design acceptable.
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Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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