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Jurnal Penelitian Hasil Hutan
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Search results for , issue " Vol 10, No 6 (1992): Jurnal Penelitian Hasil Hutan" : 4 Documents clear
PENGARUH LAJU ALIR UDARA, FAKTOR UDARA DAN SUHU TERHADAP KOMPOSISI GAS Hendra, Djeni
Jurnal Penelitian Hasil Hutan Vol 10, No 6 (1992): 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.1992.10.6.189-196

Abstract

The  result of gasification study using Albazia falcataria and  Eucalyptus deglupte wood is reported  in this paper,  using fluidized bed system   with an  air flow rate  varied  between   2,8  -  4.0  m3/hr.  air factor   between  0.22  -  0.34   and  bed  temperature    ranging  from 742 - 895ᵒC.The aim of the  study  is to  obtain   the best  treatment   is the  proses of fluidized bed.  The  result  shows that the gascous product (%.  Volume ) for  Albazia falcateria Varies from 51.81 -  61.94 %  (N2),  0.16-0,75  %  (O2), 13.52- 19.13  %  (CO2),  10.05 -  13.00  % (CO) , 4.19  - 6.41  %  (H2) ,  2. 2 7 -  5. 87  %  (CH4).   The figures  for   Eucalyptus deglupta were  54. 55  -  58; 06  %  (N2)  , 0.14  - 0. 18  % O2), 16.09-   18.81   % (COz), 11. 22 - 13.06  % (CO) , 7. 72 - 9. 73 (H2),  3.83 - 4.93  %  (CH4).in addition   C2H4 and C2H6 gas  were produced  in small  quantity from   each  species. 
PENGAMATA PENEBANGAN DAN PENGANGKUTAN SAGU DI DESA TANJUNG KECAMATAN TEBING TINGGI PROPSI RIAU Endom, Wesman
Jurnal Penelitian Hasil Hutan Vol 10, No 6 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (12526.54 KB) | DOI: 10.20886/jphh.1992.10.6.209-216

Abstract

ln  indonesia  Sago  (Metroxylon sp)  is one  of  the  natural  resources   which  is potenlally  great   enaugh for  developing  national income.  The   areas   distribute over  many  places  particularly  in Irian.  Jaya,    Maluku, some parts  of  Sulawesi,    Kalimantan and Sumatera, covering  ± 6 00  000 ha.In Sumatera, sago grow in swampy area like South Sumatera, Jambi, Riau and Aceh.  ln Riau the most famous producer sago area is Sab Districl of  Tebing   Tinggi of District Bengkalis .  According  to the last report  of 1989,  the total sago area in Sub District of Tebing tinggi  is± 15 915 ha,  and has producted sago of 156  500 ton.This paper  discussing same aspects of technical harvesting of sago.  which has preliminary observed in an area  of the  farmer  as one of the sharing sago cooperation of Harmonis,  that  localed  in Desa Tanjung. Sub District of Tebing Tinggi. Those aspects   were felling, toping and branching and tranportalion with and addition of sago proccesing.                                                         The resul: showed that felling  topping and branching and sago tranportation are carried out by group of felling  operation  wkich is consist of 6-8 men/group. the salary system is done by contract.The sagos are felled before  flowering  and each trees was cut  wilh diameter ranged.from 49-64 cm and need ±   16,1 minutes/tree.the log then cutted after lopping and branching into 8-11 pieces depend   on the  tog length  1, 05-1 ,25 m/pieces.  This pieces   are   called tual. Each  tual  then hauled   using  manual  system  as  well as  "nglebek"   on  a rail system  of the  wood.   In average to haul  of  the  distance ± 400 in from the felling   site  to sago industry   was ±  30 minutes.The sago processing    covered some  aclivities    of burking,   slicing   and flouring need±  4,5  minutes  per   tual.  Therefore   plus other delayed  time  with  calculation  10  tual/tree, the total  processing   of one  tree  sago  need  1 hour.  The productivity   of man  power   is able  to finish  of sago  horvesting  ±  1  tree/man.    Using  the wage  of Rp.  400/tual,   therefore  the total salary is Rp,  4000/day.
PENGGUNAAN TRAKTOR PERTANIAN UNTUK PENGOLAHAN TANAH DALAM PEMBANGUNAN HTI Dulsalam, Dulsalam
Jurnal Penelitian Hasil Hutan Vol 10, No 6 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (19995.942 KB) | DOI: 10.20886/jphh.1992.10.6.235-244

Abstract

A study on the use of farming tractor for  land tillage in timber estate  establishment was conducted at timber  estate area of  PT Barito Pacific Group in  South Sumatra  in 1991. The  objective  was to obtain technical and economic data on land tillage in timber estate using farming  tractor.  For this purpose, data on productivity, specification,  fixed cost and operating cost of ford farming tractor were collected. the  resuits were as follows   :1.    Land tiliage comprized three  activities namely.first plowing. second  plowing and harrowing.2.    Productiitrity in the first plowing ranged between 0.2184 ha/hour and 0. 3048 ha/hour with an average of 0. 2601 ha/hour.3.   Operation costs  in the first plowing varied from  63.206.  -/ha to Rp. 85,027.-/ha  with an average of   Rp. 71, 782.-/ha.4.   Productivity in the second plowing ranged between 0.2100  ha/hour and 0. 3240 ha/hour with an average of 0.2703 ha/hour5.    Operation COSIS in the second plowing varied from Rp. 57.315.,-/ha  to Rp. 88,428,-/ha  withan average of Rp.   69,583.-/ha.6.    Tractor productivity  in harrowing ranged between 0.3818 ha/hour and 0.5593  ha/hour with an average of 0.4702  ha/hour.7.    Costs for harrowing  varied from  Rp. 34,250.-/ha to Rp. 49,581,-/hq  with an average of Rp.  40,647.-/ha8.   Average cost of land  tillage using ford farming tractor was Rp. 182,012.-/ha.9.   it is suggested that soil condition in land tillage be considered to  save cost and power.
PENGARUH SERANGAN KUMBANG AMBROSIA XYLEBORUS SP. TERHADAP KUALITAS KAYU TUSAM (PINUS MERKUSII). Sukartana, Paimin
Jurnal Penelitian Hasil Hutan Vol 10, No 6 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5221.219 KB) | DOI: 10.20886/jphh.1992.10.6.217-221

Abstract

Some  green   logs of  tusam   (Pinus  merkusii Jungh et de Vr.)  infested by the  ambrosia   beetle  Xyleborus  sp. were  obserbed.  About one thousand  lunnels  per-square  meter  were  shown  on  the  entire  surface of each  log.   The beetle  bored  direclly into  the  logs,   causing wood  damage.The damaged   grades  of sawntimbers  converted  from  the infested  logs showed   varied.   The  most  langential sawtimber  was  highly  affected,  bul by then  the damage decreased  very sharply  toward  the  radial  area  in accordance   with  a regression  equation :      Y = 1840. 70 - 546. 63. lnX       r  = 0.98where          X  = depth  of sawntimber surface  measured  fram  the most  tangential   area  (cm).       Y = number of tunnels per-square  meter.The  infested  area   of  the  wood  was  mostly  in the  peripheral   part  of the  logs.   Of an observed  log,  it  showed   thet  in  average   of 991,.48   lunnels  per-square  meter   appeared   in a 5 cm  thickness   of that part,   and then  231.54    and   9. 73 tunnels  per-square  meter   in the consecuuve   second   and third  5 cm  of the  inner pan. the wood part  of more  than  15  cm  in depth  remained  intack.

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