Judul: Studi Antropometri Pemanen Kelapa Sawit dan Aplikasinya Pada Rancang Bangun Angkong
Abstrak: Kegiatan pengangkutan kelapa sawit dipengaruhi oleh pekerja dan alat bantunya. Aktivitas pengangkutan memiliki beberapa tahapan yang cukup beresiko dan banyak dikeluhkan oleh pekerja. Terdapat tiga tahapan yang beresiko yaitu pengangkatan, pengangkutan, dan pengeluaran buah sawit. Tahapan tersebut dapat mempengaruhi produktivitas hasil panen, namun hingga saat ini belum dilakukan optimasi untuk mencapai hasil yang optimal. Sehingga perlu dilakukan analisis ergonomika selama kegiatan tersebut untuk mengurangi resiko kerja dan keluhan yang terjadi. Tujuan dari penelitian ini adalah untuk menganalisis aktivitas pengangkutan serta membuat rekomendasi desain dimensional angkong yang sesuai. Perancangan ulang angkong berdasarkan data antropometri pekerja. Rekomendasi desain yang diberikan yaitu perubahan tinggi handle dengan persentil ke-50 sebesar 71 cm, perubahan bentuk penyangga dan perubahan mekanisme handle yang fleksibel dengan dimensi pemendekan sebesar 23,5 cm.
Keyword: Kegiatan pengangkutan, buah kelapa sawit, antropometri, desain angkong

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: Photosensor producing based on ferroelectric material of Ba0,5Sr0,5TiO3 doped by Ferrium Oxide (Fe2O3) on a P-Type Silicon Substate Si (100) applied as a digital camera with a single pixel image sensor
Abstrak: Thin film Ba0,5Sr0,5TiO3 (BST) doped with Fe2O3 was grown on p-type silicon substrate (100) using chemical solution deposition (CSD). It used the solvent 2-methoxyethanol with annealing temperature of 850°C and the doping treatment Fe2O3 of 2.5, 5, 7.5, 10 % of the mass formed BST. Pure BST had the highest absorption of 600 nm of light wavelength. Additions Fe2O3 moves highest absorption in the range of 560 nm. Fe2O3 addition was strengthening thin film sensitivity to the effects of light. In general, doping Fe2O3 10% was result the best absorbance and current-voltage of BST thin film. Electrical properties of thin films BST include dielectric, photoconductivity, and dissipation energy. Based on the current-voltage (I-V) analysis, pure BST and doped BST showed photodiode properties. Dielectric values obtained in the range from 23.32 to 243. Based on electrical conductivity data and energy dissipation, BST thin films have shown photodiode characteristics and are therefore suitable as light sensors. The image sensor in a digital camera is also a light sensor. This BST thin film has been scientifically proven to be a light sensor and also it can be applied as an image sensor. This is a novelty image sensor based on thin film Ba0.5Sr0.5TiO3.
Keyword: barium strontium titanate, thin film, photodiode, image sensor, digital camera