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: Rancang Bangun Angkong Bermesin sebagai Sarana Pengangkutan pada Proses Pengumpulan Buah Kelapa Sawit
Abstrak: Harvesting activity are one of the important activities in the palm oil production process. Harvesting activity consist of cutting fresh fruit bunches (FFB) from their stems, collection, and transport. Transportation activities in the process of collecting FFB still using simple tools, it’s wheelbarrow driven by humans. Collection FFB activity is one tough job and requires large manpower. The main topic of this research is to decrase human power load when pushing wheelbarrow with the addition of engine as a power source. Design criteria for wheelbarrow engined is to has a maximum forward speed equivalent to ability of human beings, which is 5 KPH. Design using CAD software. Adding engine is expected to increase the wheelbarrow transport capacity. The results of wheelbarrow with engine design is using 2-stroke engine with a capacity of 0.78 iii KW used from mowers engine. Functional part of the main functions are supporting frame, tub, engine cradle, 2 stroke engine, gearbox, eccentric gear, chain and sprocket, wheel, fuel tank, throttlecontrol, and handle grip. From the analysis and calculation is determined using the frame, wheels and tubs of wheelbarrow Artco branded, 2-stroke engine with a capacity of 0.78 KW, using a gearbox reduction ratio 1:20 type 40, roller chain size 40, sprocket 14T and 45T. The results from this research are design wheelbarrow with engine that have forward speed 5 KPH.
Keyword: wheelbarrows with engine design, wheelbarrow, transportation of oil palm fruits, oil palm fruits collection process

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