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Search results for , issue "Vol 6, No 8 (1990): Jurnal Penelitian Hasil Hutan" : 6 Documents clear
ANALISIS KETENAGA KERJAAN PADA BEBERAPA PABRIK KAYU LAPIS DI SUMATERA DAN KALIMANTAN Abdurachman, Akub J; Sylviani, Sylviani
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6571.165 KB) | DOI: 10.20886/jphh.1990.6.8.459-466

Abstract

An analysis of man power has been conducted in several plywood  mills in Sumatera  and Kalimantan in year 1987, and the result presented  in this paper.  The result shows  that  the average employment  is 993 men per mill.Based  on  mill  capasity  and  log input,  the average level  of  labour  absorption  is 11.33 men/1000 cum  designed  capasity, and 10.66 men/1000  cum  log input.  The  latter  figure is  more or less similar to  that  of  the developed  country  in which  the  average  level  of  labour absorption  is.11.33 men/1000  cum.  However  labour  absorption in each  mill  it is not proportional to both capasity  and  material  utilization  (logs). Organization  structure  of mills surveyed  have a long span of control  so it is recommended to be simplified.
PEMBUATAN ARANG 4 JENIS BAMBU DENGAN CARA TIMBUN Nurhayati, Tjutju
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4840.419 KB) | DOI: 10.20886/jphh.1990.6.8.500 - 503

Abstract

A study on  charcoal  manufacture  using  pit   method was  carried out 4 bamboo   species from West Java, namely andong (Gigantochloa verticillata Munro), ater   (Gigantochloa ater  Kurz), bitung (Dendrocalamus asper Back) and tali (Giganiochloa apus  Kurz). The  charcoal produced  which  was  completed   after 2 days,  were  then  subjected   to chemical analysis. The analysis consist of specific gravity, moisture content, ash, volatile  matter  and  fixed   carbon.  In addition to the aboue test, the charcoal of each species were tested  in blacksmith   which  manufacture  chopping knife.The  result  shows that out of the 4 bamboo  species tested,  ater seems to  be the  best  with  regard to  charcoal yield, chemical  properties  and application in blacksmith  work.
BEBERAPA SIFAT FISIS DAN KIMIA EKSTRAK TANIN Pari, Gustan
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7459.036 KB) | DOI: 10.20886/jphh.1990.6.8.482 - 492

Abstract

The  result  of  study on  some  physical and  chemical  properties of  tannin  ex tractiues prepared by  using  extraction method   is presented in  this  report. Treatment  conditions for  tannin  extractive   were  respectively   fineness  of  40 and  60 mesh,  extraction  temperature   were: 60°C,  80°C,  100°C  ahd raw material species  for this experiment  were Pinus merkusii, Rhizopora apiculata  and Acacia  decurrens.The result  shows that the yield of  tannin  extroctives ranges from 0,52­22,75%,  tannin  content: 2,99­70,76%, moisture content: 0,0022­25,58%, solubility in cold water:   0,096­3,50%  and  tannin  content  of  residure  ranges from 0,19­3,75%.
PENERAPAN SISTEM MEKANISASI DALAM KEGIATAN PENEBANGAN JATI UNTUK MENGURANGI KETERGANTUNGAN TERBATASNYA PENYEDIAAN TENAGA BLANDONG DI JAWA Idris, Maman Mansyur; Soenarno, Soenarno
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (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.1990.6.8.476 - 481

Abstract

Sastrodimedjo, (1975) pointed out that the present trend of wood processing  industry development and formal education of younger  generation  caused some problems,  especially in the sustainabiliy  of forest  worker supply  in Java.Based on this  consideration  an  alternatif   for  most  widely  applied  felling  system,   i.e.  manual  felling  system, needs to  be sought. With  regard to this problem a study  was conducted at three Sub Forest District (RPH), namely Temenggeng, Pasar Sore and Sumberogo in Central Java to compare  3 (three)   felling  systems  in teak forest.The result  of  the  study  revealed  that  the  teak  felling  productivity  averages on 2 years gilrded  teak with  mechanical, manual  and  combination systems applied to flat  terrain  were 2.5359 m3/hour,  0.7128  m3/hour and  0.8186 m3/hour, respectively. But   those on hilly terrain were 1.5540 m3/hour, 0.7374 m3/hour and 0.796 m3/hour,   respectively.   The average cost  of  full  mechanical  felling  system applied to flat  terrain  was Rp 1,586.23/m3,  while  that  of on  hilly  terrain was Rp 2,l  65.93/m3
PERCOBAAN FRAKSIONASI DISTILASI MINYAK KENANGA DARI CIREBON Wiyono, Bambang; Rosid, Mohammad
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (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.1990.6.8.472 - 475

Abstract

The  purpose  of  the  research  is to study the properties of  fractional distilled   cananga oil compared  with  Indonesia Industrial Standard requirement for cananga  oil  and  with  ylang­ylang oil properties of  the  third  fraction (the  lowest quality  of  ylang­ylang  oil).  The  fractionation based  on  the  distilling  times, these  were first  fraction 0 ­ 7 hours,  second fraction  8 ­14  hours,  and  third fraction  15 ­  24 hours.The results indicated that third fraction have met with Indonesia  Industrial  Standard  requirement, but specific gravity of  the  first and  second  fraction have not met the  requirement.  Acid   number   of  all fraction   have met  requirement  for ylang­ylang  oil.  Ester  number  of  the  third fraction  proximated  the ester of ylang­ylang  oil. Ester number  and ester content of  the  first  fraction   had a  higher  than  the  second  fraction and  this fraction had a higher  than  the  third fraction.  So, the first  fractional  distilled   cananga oil possesed  the  highest  quality. These  quality  could  be increased  by the fractional  steam distillation  in vacum pressure,  and  the distilling  used fresh  cananga flowers.
PENILAIAN JUMLAH PENGGUNAAN TRUK ANGKUTAN DI DUA PERUSAHAAN HUTAN DI SUMATERA BARAT Dulsalam, Dulsalam
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (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.1990.6.8.493 - 499

Abstract

A  study   on  the productivity  of  logging trucks  at  two  forest  companies  was done  in 1984, and  the result  is reported in  this article. Four logging  trucks  used by PT Ragusa  and  five by PT Pasar Besar were selected  randomly to study transport time and load  volumes  through work  time  study. The  purpose is to find out the optimum number of  trucks  suitable to transport logs from the forests to log ponds, processing places or other  distribution  point.  The result shows  that:Isuzu  TWD 20 trucks  were used to transport  logs at the  two forest  companies.The average log volume  per  and  trip  transportation at PT  Ragusa and PT Pasar Besar were  15.20 m3 and 12.84  m3, respectively.Average productivity at PT Ragusa and PT Pasar Besar were 45.6 m3/day  and 25.68  m3/day, respectively.Logging truck productivities were possibly influenced by load volumes and transport  distance.The  number of  logging  trucks  actually urged  in  hauling  logs at PT  Ragusa and  PT Pasar Besar were  5 and 11 units, respectively. Procurement of  new or reparation  of  idle  logging trucks  is strongly recommended.

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