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INDONESIA
Jurnal Keteknikan Pertanian
Published by Institut Pertanian Bogor
ISSN : 24070475     EISSN : 23388439     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Keteknikan Pertanian dengan No. ISSN 2338-8439, pada awalnya bernama Buletin Keteknikan Pertanian, merupakan publikasi resmi Perhimpunan Teknik Pertanian Indonesia (PERTETA) bekerjasama dengan Departemen Teknik Mesin dan Biosistem (TMB) IPB yang terbit pertama kali pada tahun 1984, berkiprah dalam pengembangan ilmu keteknikan untuk pertanian tropika dan lingkungan hayati. Jurnal ini diterbitkan dua kali setahun. Penulis makalah tidak dibatasi pada anggota PERTETA tetapi terbuka bagi masyarakat umum. Lingkup makalah, antara lain: teknik sumberdaya lahan dan air, alat dan mesin budidaya, lingkungan dan bangunan, energi alternatif dan elektrifikasi, ergonomika dan elektronika, teknik pengolahan pangan dan hasil pertanian, manajemen dan sistem informasi. Makalah dikelompokkan dalam invited paper yang menyajikan isu aktual nasional dan internasional, review perkembangan penelitian, atau penerpan ilmu dan teknologi, technical paper hasil penelitian, penerapan, atau diseminasi, serta research methodology berkaitan pengembangan modul, metode, prosedur, program aplikasi, dan lain sebagainya.
Arjuna Subject : -
Articles 7 Documents
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Search results for , issue "Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian" : 7 Documents clear
The goal of the housing programme is to realize affordable or low cost housing construction for low income society, to improve access to basic services in urban and rural areas and promotion of local building materials. Waste material of rice straw is potential to be used as building materials becaue it contains fibres, SiD2 (if it is mixed with cement, it is possible to form calcium silicate hydrate), wax, pentosan, and lignin. This material is relatively cheap and easiZv available ill the imme Abdul Rozak; Sri Mudiastuti; Aim Abdurachim Idris
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

The goal of the housing programme is to realize affordable or low cost housing construction for low income society, to improve access to basic services in urban and rural areas and promotion of local building materials. Waste material of rice straw is potential to be used as building materials becaue it contains fibres, SiD2 (if it is mixed with cement, it is possible to form calcium silicate hydrate), wax, pentosan, and lignin. This material is relatively cheap and easiZv available ill the immediate vicinity. The addition of organic materials of the rice straw ill manufacturing panel board is intended to improve the panel quality such as strength, light weight, an thermal properties.
The equipment that were bought from the manufacturer would have the data of reliability for example, MTTF (Mean Time To Failure), MTBF (Mean Time Between Failure) or MTTR (Mean Time To Repair), however these data only valid if the operation and maintenance condition are same with the operation and maintenance condition that were given by the manufacturer. If these condition could not be satisfied by the user then the data of MTTF, MTBF and MTTR that given by manufacturer could not be able as a r M Yamin; Kusmayanto Kadium; Hermawan Kresno Dipoyono
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

The equipment that were bought from the manufacturer would have the data of reliability for example, MTTF (Mean Time To Failure), MTBF (Mean Time Between Failure) or MTTR (Mean Time To Repair), however these data only valid if the operation and maintenance condition are same with the operation and maintenance condition that were given by the manufacturer. If these condition could not be satisfied by the user then the data of MTTF, MTBF and MTTR that given by manufacturer could not be able as a refwence data of reliability. This research aimed to devt?loped the statistical method of probability density fimtion which can be used on the data processing which are collected during operation and maintenance of the paper machine P. T Kertas Padalarang from 1980 to 1995. By processing these data, MTTF, MTBF or MTTR of the components can be determined. To calculate the tofal failure probability of paper machine, the author used the sofrware of DFT (Diagram Fault Tree Analysis) that developed by Suryadh.na.N.N.'71 The result of this research is the total failure probability of paper machine is 0.999 at the operation time of 2000 hr. It is mean that at that operation time the machine has reached failure condition, may be it will stop suddenly. At that operation time, the reliability of machine is 0.001. The Operation time of 2000 hr could be able as a reference value for doing maintenance and repair.
Measurement of Transfort Properties for The Dried Layer of Several Food Materials Undergoing Freeze-Drying Tetsuya Araki; A H Tambunan; K Abdullah
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

The transport properties of several food materials have been presented as fundamental information to determine the drying rate of freeze-drying process. As an example, the measuring method of thermal conductyvity and permeability has been demonstrated for the sample of slices and mashed aplles undergoing freeze drying. Both samples were freeze - dried at constan surface temperatur ranging from -10 to 70 under the usual pressure range of commercial operation. A mathematical model, based on quasi-steady state analys, was formulated and then apllied to the drying data to determine these transport properties for the dried layer of the sample undergoing freeze drying. Values of thermal conductivity were found to be almost the same between sliced and  mashed samples. However , the permeability data of mashed aplles were more than 4 timer greather than that sliced aplles.
During vegetative growth period, sugarcane required a lot of water but decreasing afterward and minimum at ripening period. Sugarcane water requirement was calculated by radiation method and USDA (1969) method was used to determinate effective rainfall. Average of monthly actual evapotranspiration (ETa) was calculated by the available soil water index. The total of water requirement of sugarcane (1-12 month) was around 37.38 mmlmonth to 143.22 mmlmonth. The highest water requirement was found at Herlika Asriasuri; Nora H Pandjaitan
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

During vegetative growth period, sugarcane required a lot of water but decreasing afterward and minimum at ripening period. Sugarcane water requirement was calculated by radiation method and USDA (1969) method was used to determinate effective rainfall. Average of monthly actual evapotranspiration (ETa) was calculated by the available soil water index. The total of water requirement of sugarcane (1-12 month) was around 37.38 mmlmonth to 143.22 mmlmonth. The highest water requirement was found at age of 4 to 9 month, while the lowest was in the ripening period. Accordingly drip irrigation should be operated at maximum water use of about 3.96 mm/day, or by sprinkle irrigation not less than 118.70 mm/mounth.
Baru-baru ini Gustav Grob (1996) mengingatkan lagi prediksi Club of Rome di awal tahun 1970-an bahwa bahan bakar fossil, yang sifatnya meneemarkan lingkungan, dan tak terbarukan kian berkurang keberadaannya dan dalam waktu dekat harus diganti dengan sumber energi terbarukan yang lebih bersahabat dengan lingkungan seperti sumber-sumber energi surya, biomassa, angin, hidro, dll. Ketergantungan kita atas bahan bakar fosil mungkin akan berlanjut sampai beberapa dekade lagi tetapi dalam jumlah yang j Kamaruddin Abdullah
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

Baru-baru ini Gustav Grob (1996) mengingatkan lagi prediksi Club of Rome di awal tahun 1970-an bahwa bahan bakar fossil, yang sifatnya meneemarkan lingkungan, dan tak terbarukan kian berkurang keberadaannya dan dalam waktu dekat harus diganti dengan sumber energi terbarukan yang lebih bersahabat dengan lingkungan seperti sumber-sumber energi surya, biomassa, angin, hidro, dll. Ketergantungan kita atas bahan bakar fosil mungkin akan berlanjut sampai beberapa dekade lagi tetapi dalam jumlah yang jauh lebih kecil dari apa yang di konsumsikan sebelum tahun 2000 seperti terlihat pada Gambar 1 (Grob, 1996)  
A riped jackfruit (Arthocarpus heterophyllus Lamk.) is one of the most popular fruit among tropical fruits, but it has inferior characteristic such as perishable, time consumed to served in fresh condition for peeling, and it consists of something sticky. Therefore a minimal processing must be done. This study is aimed to evaluate the respiration rate and find out the optimum condition for lengthening the storage life of minimally processed jackfruit under a modified atmospheric packaging. Accor Ni Made Sudiari; Sutrisno .
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

A riped jackfruit (Arthocarpus heterophyllus Lamk.) is one of the most popular fruit among tropical fruits, but it has inferior characteristic such as perishable, time consumed to served in fresh condition for peeling, and it consists of something sticky. Therefore a minimal processing must be done. This study is aimed to evaluate the respiration rate and find out the optimum condition for lengthening the storage life of minimally processed jackfruit under a modified atmospheric packaging. According to its respiration pattern, a jackfruit is classified as a climacteric fruit, due to its sudden increase of evaluated C02. The optimum gas composition for MAP is 4-7% 02 and 10-12% C02 with a storage temperature of 5 'C. The MAP of jackfruit using Styrofoam tray and Stretch Film packaging is able to lengthen its storage until 8 days.
The study on Work Load Calibration by using Step Test and Ergometer test was carried out in order to find the best way 10 calibrate the data measurement and to predict human work load by using heart rate data. This study was conducted on four male subjects. but the data analysis has just been done to three subjects due one of the subject was insufficient performance. The sport tester PE3000 heart rate monitor is used for measuring the heart rate data which will be useful for predicting the work Roni Kastaman; Sam Herodian
Jurnal Keteknikan Pertanian Vol. 12 No. 1 (1998): Buletin Ketenikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.1.%p

Abstract

The study on Work Load Calibration by using Step Test and Ergometer test was carried out in order to find the best way 10 calibrate the data measurement and to predict human work load by using heart rate data. This study was conducted on four male subjects. but the data analysis has just been done to three subjects due one of the subject was insufficient performance. The sport tester PE3000 heart rate monitor is used for measuring the heart rate data which will be useful for predicting the work load on each activity. The linear regression method is also used to predict the work load based on the heart rate data, so that the best alternative scenario data input will be able to determined by comparing the correlation coefficient or coefficient of determination.

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