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Jurnal Penelitian Hasil Hutan
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Articles 3 Documents
Search results for , issue " Vol 13, No 6 (1995): Jurnal Penelitian Hasil Hutan" : 3 Documents clear
SIFAT PEMESINAN ENAM JENIS KAYU INDONESIA Ginoga, Bakir
Jurnal Penelitian Hasil Hutan Vol 13, No 6 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1121.751 KB) | DOI: 10.20886/jphh.1995.13.6.246-251

Abstract

The quality of machining properties of six Indonesian wood species, i.e. meranti merah (Shorea selanica BI .), medang lesa (Cinnamomum parthenoxylon Meissn.), dahu (Draconto-melon mangiferum BI.), kaya (Khaya anthoteca Cdc.), bawang (Melia excelsa Jack.), and merawan (Hopea odorata , from Darmaga Experimental forest, has been investigated. The testing was carried out based on air dried specimen. The results revealed that the planing and moulding quality varies from good (II) to very good classes(1); turning and sanding belong to good class (II). while boring quality varies from medium (III) to good (II) classes.
PENGOLAHAN LEMAK TENGKAWANG DENGAN CARA PENGEMPAAN HIDRAULIK Wiyono, Bambang
Jurnal Penelitian Hasil Hutan Vol 13, No 6 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1354.258 KB) | DOI: 10.20886/jphh.1995.13.6.215-221

Abstract

Observations in this research were conducted in the IIIipe fat industry and in the laboratory. The observation in the fat industry was to get a clear discription of the fat processing of IIIipe nut, whilts in the laboratory was to study the extraction process of IIIipe fat with a hydraulic pressing technique. The pressure were conducted at several pressing levels: 25, 50, and 75 kg/cm2, at a pressing temperature of 50-60 oC for 20 minutes respectively.To produce IIIipe fats, the industry applies a combination technique of hydraulic pressure and hexane extraction. The yield of fat with this combination technique is around 40-50 %. However, the results of experiment in the laboratory showed that at an 50 kg/cm2 pressure produced yield of fat with a high quality indicated by the highest value of iodine number.
KAJIAN PENGGUNAAN KAPASITAS TRAKTOR KOMATSU D85E- SS DALAM UPAYA PENINGKATAN PRODUKTIVITAS PENYARADAN Endom, Wesman; Sukanda, Sukanda
Jurnal Penelitian Hasil Hutan Vol 13, No 6 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2911.461 KB) | DOI: 10.20886/jphh.1995.13.6.231-245

Abstract

This research was aiming at indentifying the tractor skidding capasity in logging operation in the natural production forest. The tractor observed was Komatsu D85E-SS. and in this study the specific gravity of 0.8 for all species was assumed.The results shows that the capasity of skidding was about 14. 7 ton or equal to 18, 40 m log. However, it was found that from 52 observations, 8% were done under the 20% capacity, 42% of the skidding were done under 21-40% capacity, 25% were done under 40% capacity and 8% were done by winching. .Those figures indicate that the skidder capacity has not yet fully utilized. Therefore, the possibility to increase the volume of skidding is widely open, meaning that the logging wastes can be overcome by skidding those above clear bole parts together with the main log.The cost of skidding per m3 compared with 20 years ago was found to be three times higher. The cost skidding per m3 was about Rp. 3225,- at the averege distance of 3,16 hm.

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