Judul: Analisis gaya spesifik pernotongan parenkhim pelepah dan batang tandan sawit (Eiais guanensis, Jack)
Abstrak: A part of study related to the development of harvesting machinery of palm oil fruits had been conducted to analyze the cutting mechanism of the oil palm leaf parenchyma and the palm oil fruit. These works provided the basic parameters for cutting the leaves and the fruits efiicientty. The data related to the mechanical properties of the leaf and the fruits had never been provided yet, hence in this study, the testing of these properties had been carried out. The specific cutting force of the leaves and the fruits had been analyzed to obtain the relation of the mechanical properties and the parameters of the cutting edge such as the cutting angle (81, sharpness angle (B), and a symmetrical and un symrnetkxl knife. Mathematical models had been developed and validated by direct measurements conducted in this study. The results of the study, showed that the lowest maximum force of the symmetrical knife of 8 = 30' and = I@while, th e highest maximum was obtained for the un-symmetrical knife of 8 = 0' and f3 = 20'. The greater the angk, the higher the maximum force of cutting. The greater the 0 angle, the lower its maximum specific cutting force. The parameter of the symmetrical knife showed that the maximum cutting force was lower compared the un-symmetrical knife. The trend of analyses of maximum cutting power resembled the results analyses of maximum cutting force.
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Judul: Studi Antropometri dan Gerak Kerja Pemanen Kelapa Sawit serta Aplikasinya untuk Penyempurnaan Desain Alat Panen Sawit (Egrek dan Dodos)
Abstrak: Oil palm harvesting process using conventional tools named pole and curve knife and chisel may cause risk of injury. Good matching and compatibility between human and tools dimensions is necessary to gain optimum performance. So an anthropometric approach in order to obtain an ergonomic design is needed. The purpose of this study was to analyze suitable dimentional of pole and curve knife and chisel based on natural range of motion and anthropometric data of harvester’s, and to recommend a better design of pole and curve knife and chisel which are more ergonomic. The result range of motion analysis show that the upper body such as the neck, shoulder and forearm determine the level of risk and can cause risk of injury. Simulation result obtained an egronomic stem length of chisel is 1 meter with 3 connected stem, and seen from technical aspect is 1.5 meter with 2 connected stem. While the length of pole and curve knife stem is 4 meter with 5 connected stem. In addition to that, this research revealed that the total length of pole and curve knife stem needed in a certain harvesting activity can be formulated as : ( ) , where h is the high of cutting target, t is the high of harvesters.
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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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