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Search results for , issue "Vol 7, No 4 (1990): Jurnal Penelitian Hasil Hutan" : 7 Documents clear
PENGAWETAN EMPAT JENIS KAYU UNTUK TIANG LISTRIK DENGAN METODA SEL PENUH Yetty, Emmy; Barly, Barly
Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2559.111 KB) | DOI: 10.20886/jphh.1990.7.4.146-149

Abstract

A full cell treatment of four wood species with 5 and 7 percent copper-chrome-arcenic solution  was conducted using small samples  of 18-25 cm in diametre and 30 cm long. The cross cut-ends of the samples were coated to prevent penetration of the preservative  through  these parts. The preservation  process were held for 2 and 4 hours at a pressure  of 8 and 10 atmosphere.                                                                 The result of the test revealed that four wood species (keluntum, medang, manggung   and  puspa) are recommended for  power poles servation. The treatment shchedule  proposed  for four wood  species  is presented in this paper.
SIFAT PEMESINAN 10 JENIS KAYU DARI DAERAH NUSA TENGGARA BARAT Rachman, Osly; Rulliaty, Sri
Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4794.688 KB) | DOI: 10.20886/jphh.1990.7.4.121-129

Abstract

Machining  properties  of  ten  wood  species from West Nusa Tenggara is reported  in this paper.The sample material was tested under ASTM D-1666 that was modified   according to  Forest Products Research  Institute Report No.160 (1982). The  samples (25  pieces/species) were  dried  to  equilibrium   moisture content condition (15 to18 %  of  MC). The  machining  properties   tested  are planing,  shaping,  boring,  turning,  and sanding.Four species  that have good  to  very good  machining properties  are Anthocephalus cadamba  Miq., Duabanga moluccana BL., Eugenia longiflora (Presl.) F. Viii., and  Eugenia polyantha Wight. Whereas the other species have poor  machining properties   i.e.,  Ailanthus  malabarica DC, Ficus  microcarpa   L.f  and  Palaquium  javense Burck.
PENGAWETAN SEPULUH JENIS KAYU SECARA RENDAMAN DINGIN Yetty, Emmy; Barly, Barly
Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5900.296 KB) | DOI: 10.20886/jphh.1990.7.4.156 - 159

Abstract

The result of cold soaking treatment of ten wood species is reported  in this paper.  Five wood  species are recommended  for housing (agatis, balsa, damar kaca, karet  and  kemayau), whereas  the  other  five  species  (begontoi, belangeran, kenari I, kenari  II and  mahoni) could  not  meet  the  spesification. Solution concentration of Koppers  Formula  7 preservative  used  was 10  percent  with  soaking period  of one, three and five days. The treatment  shchedule  proposed  for five  wood species  is also presented in this  paper.
SIFAT VENIR DAN KAYU LAPIS ENAM JENIS KAYU UNTUK HUTAN TANAMAN INDUSTRI Memed, Rodjak; Iskandar, M I; Sutigno, Paribotro
Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4666.226 KB) | DOI: 10.20886/jphh.1990.7.4.139 - 145

Abstract

The characteristics studied are peeling  properties, physical properties of  the  veneer,  gluing  properties  and  some physical   and  mechanical  properties of  the  plywood  (both   triplex and  multiplex).All logs from 6 wood species could be peeled satisfactorily in cold condition. Veneer  of  1.5 mm  thickness could be produced at cutting angle  between  90° 30’- 92°.Average shrinkage of  the  veneer is 6.52% and  average veneer  swelling  from  oven  dry to air dry condition is 4.11%. Water resistant bonding  strength for all wood species  studied meet  Indonesian, Japanese and German  standard. Average thichness  reduction  due to pressing in the plywood  manufacturing  process  is 0.31mm.  The mechanical  properties of plywood vary among  the wood  species.
ANALISIS BIAYA DAN TENAGA KERJA PADA BEBERAPA KILANG PENGGERGAJIAN DI SUMATERA SELATAN Sylviani, Sylviani; Abdurachman, Akub J
Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): 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.1990.7.4.150 - 155

Abstract

The result of research on several sawmills in South Sumatera  showed that average   level of manager productivity is 7.563 Cu.m/man/annum, administration productivity is  3.220 Cu.m/man/annum, tecnician productivity is 74 Cu.m/man/annum. Average labor   requirements are 9 men/1.000 Cu.m  of  the  design  capacity  and  10  men/1.000 Cu.m  of  raw material.Cost of  production of  sawntimber   showed  an average  of  Rp  184.808,-/Cu.m, in which  the processing  cost  alone ranked  high  up  to an average of  83 %, marketing  cost 10 %,  and general cost  7 %. Profit  generated of  each  mill per annum  ranged from  Rp 891.060.692,- to Rp  3.165.279.700,- or equivalent   to an average  of  Rp  80.053  per  Cu.m.
PEMBUATAN ARANG RENDEMEN TINGGI DARI TEMPURUNG KELAPA DENGAN KILN DRUM Hudaya, Nurmala; Hartoyo, Hartoyo
Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): 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.1990.7.4.134 - 138

Abstract

The aim of  this  research  is to  improve charcoal kiln and production  techniques so  that  yield  and  quality  can be optimazed  with  less capital  operating  cost.The  kiln used in this  experiment  was  made   from a  typical 200 litre oil drum with  special design  incorporating 12  holes  of  13  mm in  diameter in different elevations, at  the  base, 30 cm and 60 cm  above  the  base. A  short  chimney of  30 cm  height  at  the  top  with  10 cm  in  was also  installed  diameter.This report discusses the experimental procedures including raw material preparation, loading and operation of tedrum kiln. The yield all qualities of  the charcoal produced are also  discussed  in  this  report. The  results of this experiment showed that single Drum Kiln can produce high charcoal yield  ranging  from  33,8  % to 37,2 % and average of  35,7 %.A comparison of  results with survey  data  shows   that  the  quality of  the  coconut   shell  charcoal produced  by  the drum kiln  method.  conform favorably with the  quality   of  charcoal  being  used for production of  commercial  activated carbon.
ANALISIS KIMIA 9 JENIS KAYU INDONESIA Pari, Gustan; Hartoyo, Hartoyo
Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): 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.1990.7.4.130 - 133

Abstract

This  paper  deals  with  a chemical  analyses  of  nine   species  of  wood  obtained  from industrial plantation forest. The analyses comprised of the determination of  holocellulose, cellulose, lignin, pentosan, moisture content,   ash content, silica  content and  the  solubility in cold  water,   hot  water,  one percent of  sodium   hydroxide   and  ethanol  benzene   (1:2) extractives.The result shows that  holocellulose content ranges  from 57,80 - 66,34 percent,    cellulose  content from 42,23 - 54,91 percent, lignin  from  23,75 - 32,42 percent,  pentosan from 10,10 -19,23 percent, moisture  content  from  10,19 - 26,37  percent, ash content   from   0,25 - 3,08  percent, silica content   from 0,07 - 2,47 percent, solubility in cold  water ranges  from  0,11 - 7,20 percent, solubility in hot  water   from  2,62  -  9,25 percent, solubility in 1%  NaOH from 10,72-19,65  percent   and ethanol  benzene  ranges from  2,09  -  6,13 percent.

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