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Jurnal Penelitian Hasil Hutan
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Articles 3 Documents
Search results for , issue " Vol 9, No 4 (1991): Jurnal Penelitian Hasil Hutan" : 3 Documents clear
PRAKTEK PEMBUATAN JALAN HUTAN DAN PERMASALAHANNYA DI DAERAH PROPINSI JAMBI Tinambunan, Djaban
Jurnal Penelitian Hasil Hutan Vol 9, No 4 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1991.9.4.150-157

Abstract

An obseroation on road  construction practice and its problems in two logging company areas in Jambi Province was conducted in  1990. The spcific playeical condition of  the area observed is quite light  and,  therefore, the coat of road construction is low at Rp 5.84 million/km main road grading.Road  densities  are  5. 3 m/ha in the first   and 11.2 m/ha in the second company area. For these roads. land area used amounts to  111.24 ha from the total of  19,940 ha logged-over. area or  0.56% in the first and  401.70 ha from the area of  35,021 ha logged-over  area or  1.15%  in  the second company. The ratio of road length to log volume extracted are 0.21 m/cu.m in the  first  and 6.69 m/cu.m  in the second  company.The rate of natural vegetation growth along  forest roads is quite high which is very helpful in retarding soil  erosion potential of the roads.
PENETAPAN UKURAN SASARAN PADA LIMA UNIT PENGGERGAIIAN KAYU JATI DI JAWA TENGAH & JAWA TIMUR Rachman, Osly; Rulliaty, Sri
Jurnal Penelitian Hasil Hutan Vol 9, No 4 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14643.447 KB) | DOI: 10.20886/jphh.1991.9.4.179--173

Abstract

Three teak wood sawmilis  in Central Java and two in East  Java have been selected for study on target aize determi- nation Using 100  board samples  from   each sawmill. The result was calculated using formulos for determining lumber tar get sizeThe  rasult  indicates that actual size produced by three sawmills were higher than target size,  ranging from 0.32 mm to 2.11  mm. The actual size produced by  two other sawmills was lower than the tagret size, ranging from 0.61  mm to 6.48 mnt 5.48 mm.  This result indicates  that target size determination is important  to improve  sawing  efficiency.
MEMPELAJARI PENGGUNAAN TUNGKU LIMBAH KAYU SENGON (Parasaerianthes falcataria) UNTUK PENGERINGAN PAPANNYA Nurhayati, Tjutju
Jurnal Penelitian Hasil Hutan Vol 9, No 4 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2392.179 KB) | DOI: 10.20886/jphh.1991.9.4.158-162

Abstract

The  sengon wood waste fired stove was installed, to supily energy into certain length of circulating duct of the dryirlg chamber. The utilization of wet slabs  (moisture content  163.3  percent) in a wood stove produced drying air tempe- rature in the chamber at  30ᵒC.  When  jointing board waste  (moisture content  12.16  percent) was used to fire the stoue the drying temperature  of  70°.C was  achiued.The efficiency  of the wood waste fired  stoue was 39.46 percent, calculated on the basis of the energy produced by sengon wood waste burned, and the energy consumed by the drying  wood i.e 3.641 and 1.397 GJ.

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