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INDONESIA
Jurnal Penelitian Hasil Hutan
Published by Badan Penelitian dan Penegembangan Kehutanan
ISSN : 02164329     EISSN : 24428957     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management
Arjuna Subject : -
Articles 1,559 Documents
 106   107   108   109   110 
HASIL DESTILASI KERING DAN NILAI KALOR KAYU NANGKA (Artocarpus heterophyllus Lamk) srii komarayat; Djeni Hendra
Jurnal Penelitian Hasil Hutan Vol 10, No 4 (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.1992.10.4.39 – 41

Abstract

Rapid destructive of Jackfruit wood was carried out by using a retort equipped with electrical heating syslem. This retort was also connected to a condenser and two flask to catch and  collect  the distillate or condensed gas.  The retort capacity was about  4 kg of wood.  Treatment conditions given in these experiment  were maximum heating temperature of500ᵒ C and 5 hours  distillation time.The results showed that charcoal yield of Jackfruit  wood varied from  25.00  to 39.81%, tar from  6.23 to 9.42%  and pyroligneous liquor from  67.64 to 102.05%  The calonfic  value of wood varied from  4392.00  to 4620. 65  kcal/g and charcoal from 6691.81 to 7108.37.kcal/g.Based on  these calorific values, wood and charcoal of Jackfruit wood are excellent material for fuel.
PRODUKTIVITAS DAN BIAYA PENYARADAN KAYU DENGAN KERBAU DI JAMBI Dulsalam Dulsalam; Sukadaryati Sukadaryati
Jurnal Penelitian Hasil Hutan Vol 19, No 3 (2001): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2001.19.3.147-164

Abstract

An investigation on productivity and log­skidding cost using buffalo (Bubalus bubalis) was carried out at the area of lnhutani V in Jambi in 1999. The objective is to get reliable information about such productivity and cost. Connected with this purpose, some related data as collected were i.e. volume of skidded log, skidding distance, skidding­working time, buffalo working time, feeding cost, operator cost, and equipment.Volumes of log which was skidded using buffalo ranged between 0.094 and 0.904 m3/tripwith an avverage of 0.484 m3/trip. Skidding distance using buffalo varied from 10 to 2­12 m with an average of 82 m. The working time varied from 11 to 83 minutes with an average of 30 minutes. The log skidding productivity ranged between 0.035 and 1.211 m3­hm/hour with an average of 0.338 m3­hmlhour. Log skidding costs using buffalo ranged between Rp 681 and Rp23.589 m3­hm with an average of Rp 4.375/m3­hm. It is suggested that volume of skidded log in each round trip and skidding distance be not more than 1 m3 and 250 m, respectively.
ORGANISME PERUSAK KAYU PADA RUMAH RAKYAT DIYOGYAKARTA Barly Barly; Nana Supriana; Agus Ismanto
Jurnal Penelitian Hasil Hutan Vol 3, No 2 (1986): 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.1986.3.2.19-24

Abstract

Many  householders in  Yogyakarta  find  that  tney  need to know  something about  wood  destroying  organisms.   This may  be because  they  suspect  a problem  exists  in their house,  or  because  they plan  to buy  or build new house,  and wish  to avoid  serious  problems   during  use. However,   not  all damage  observed  should  cause concern,   as some  insects  attact only green  timber  and  their activity   cease  when  the  timber  dries-up. On the  other  hand.  some  insects  cause extensive  and con- tinuing  damage  and  can  be difficult  or expensive   to control.
Pengaruh Tingkat Penekanan dan Posisi Pengambilan Sampel pada Dolok terhadap Penyerapan Rubinate oleh Sitka Spruce yang Dipanaskan Dahulu dengan Microwave Karnita Yuniarti; Jeff Hann
Jurnal Penelitian Hasil Hutan Vol 23, No 4 (2005): 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.2005.23.4.317-325

Abstract

Penggunaan energi mikrowave pada tingkat cukup tinggi dapat menyebabkan perubahan dimensi kayu akibat patahnya beberapa struktur kayu yang lemah. Modifikasi lebih lanjut dengan resin diikuti penekanan kayu selama proses fiksasi resin dapat memperbaiki kualitas kayu tersebut. Penelitian ini bertujuan untuk menganalisis pengaruh penekanan selama proses fiksasi resin rubinate dan faktor posisi pengambilan sampel kayu terhadap penyerapan rubinate oleh Stika spruce yang sebelumnya dipanaskan dengan mikrowave. Hasil penelitian menunjukkan bahwa penyerapan akhir dipengaruhi oleh tingkat penekanan yang digunakan selama proses fiksasi resin dan kurang dipengaruhi oleh faktor posisi pengambilan sampel kayu. Penyerapan akhir rubinate juga dipengaruhi oleh interaksi antara kedua faktor tersebut.
KAJIAN TEKNIS DAN EKONOMIS PEMANFAATAN KAYU PERUPUK I M Sulastiningsih; Setiasih Irawanti; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 14, No 3 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1996.14.3.85-99

Abstract

Formerly perupuk wood was not recognized as good raw material by wood working manufacturers. Because of the increasing scarcity of ramin wood, the perupuk   wood had gained the benefit of the situation as indicated by increasing demand and price of perupuk   wood.The technical and economic studies on perupuk   wood (Lophopetalum.   spp)  utilization  wascarried out at one wood working mill in Gresik, East Java in 1994.   The objectives of the study were to identify   kind  of products  resulted from perupuk    utilization,  recovery level of each product, productivity and efficiency ofperupuk wood working machineries,  and its value added.The study showed that kind of products  resulted from perupuk    utilization were moulding,smooth-four-side (S4S), finger jointed  stick, solid jointed  board and finger jointed  board. The average  recovery  of perupuk    utilization  was  55%  and  the highest  recovery  (65.60%) was obtained by smooth-four-side product.  The double planer machine had the highest productivity because all products  used the machine to get the standard dimensions. The efficiency of some perupuk    wood  working  machineries  still  low.   The  value  added  of perupuk    wood  working products  were 90%,  55%,   52%,  37% and  24% for  smooth-four-side,  finger jointed  board, moulding,  solid jointed board and fingerjointed stick respectively.Key words :   perupuk,   wood working,  recovery and value  added.
PENGARUH KONDISI LINGKUNGAN TERHADAP SERANGAN PENGGEREK KAYU DI LAUT Mohammad Muslich; Ginuk Sumarni
Jurnal Penelitian Hasil Hutan Vol 5, No 5 (1988): 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.1988.5.5.294-297

Abstract

One hundred  and  twenty   five pieces  of  wood  from  five  species had been exposed  to Marine Borers in five different locations.  The test sites chosen  were around  Gulf of Jakarta,  i.e.  about  3 km  off  shore in Mauk, Mauk estuary,  Tanjung Pasir shore,  Rambut  Island  and Puntung  Java Island.The  result shows  that  at  the sea site  where the salinity  is relatively stable around  29‰  -   30‰  and at the Rambut  and Puntung Java Islands  30‰  -   34‰, all of  the  wood  tested  are badly  attacked by Marine Borers.  The result also shows  that  at  the  Mauk  estuary  and  Tanjung  Pasir shore  where  the salinity  5°/oo  -  30°/oo, damage  is only  small
PENGARUH GABUNGAN DUA JENIS KAYU DAN JUMLAH LAPISAN TERHADAP SIFAT MEKANIS KAYU LAMINA Marolop Sinaga
Jurnal Penelitian Hasil Hutan Vol 6, No 4 (1989): 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.1989.6.4.272-276

Abstract

An experiment of glued lamination has been conducted and their mechanical properties were tested. The pile component of glued laminated wood samples were prepared consisting of two jointed wood species with 2 (two), 3 (three) and 4 (four) layers. The dimension of glued laminated samples is 5 cm x 5 cm x 76 cm and all components were connected by glue. The mechanical properties observed are modulus of elasticity (MOE), modulus of rupture (MOR), compreesion parallel to the grain, shear parallel- to the grain (radial* and tangential) by Balwin universal testing machine with ASTM method.The results show that the mechanical properties glued laminated samples are adequate for construction purpose.
MANIPULASl POLA SADAP UNTUK MENINGKATKAN BASIL GETAH POHON AGATIS (AGATHIS SP.) Ishak Sumantri; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (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.1991.9.1.1-4

Abstract

Thia ptJPB preaenta  the  re1ult1 •of  invatifOtion   on tapping  design1 manipulation   to increae   relin• yield  of  A,aihiaap. cawied  out  in  Wono10bo  Sub  Fore1t  Diatrict,  Purworejo  Fore1t  District,   Unit 11 Perum  Perhutani  Central  Java, in 1989. The objective   iB  to  (ind  out  the  tapping  design  that  can increaae retin  yield.  For  thit  purpo•,    the 1lanted and horizontal tappi1111 daigna  were applied. Data   obtained   were  analysed   by  uaing neated  desilnl   with  2 x 6 'x 4 (acto1'1. The retult•are as foUowa :                                                                                                                                                                                                                                                                   I.  An  awrage  reain yie1d of  .Agathia ap. in  Wonoaobo  Sub  Foreat District was 2.4 7 gram/tree/day   with  the ro111e  between O. 71 and 8.29  gram/tree/day.2.  The Average  rain   y1Bld1  of  Alatbia   1p. uting 1lanted and horizontal  tapping  design1 were 2.80 and 2.66 gram/tree/day, re1Pectively.3.  The  average rain   yield•  of  Agathia 1p. in February,  .March, April,  .May and  June  were  1.88,  2.62,  2.62,  2.66 and 2.69 1n1m/tree/day,   rapectively.                                                                                                                               .4.  The  average  rain   yields  of  Agathia  1p. at  the  fir•t,  second,  third  and  fourth   tappings  were. 2.36,  2.46,  2.63  and  2.66 gram/tree/day,   respectively.5.  The  rain  yields among  tapping  months  were different   significantly   while the resin yields either  between  tappfn6  deligna or  amorw  tapping  (requencie1   were  not  Bignificantly  different.   Compered   to  relin  yield  of  horizontal   tappin6  de.Wn. the rain  yield  of 1lanted ta~ping deBign wa• 16% higher.
SIFAT PAPAN SEMEN DARI BATANG KELAPA SAWIT (Elaeis guinensis) Suwandi Kliwon
Jurnal Penelitian Hasil Hutan Vol 14, No 10 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1996.14.10.454-461

Abstract

Tanaman  kelapa sawit  (Elaeis  guinensis) ditanam orang guna diambil minyaknya dari buahnya  sebagai  produk  utama. Setelah berumur 25 tahun tanaman kelapa sawit ditebang habis, disebabkan  minyak yang dihasilkan dari buahnya sudah tidak ekonomis lagi. Untuk meningkatkan pemanfaatan batang kelapa sawit, salah satu alternatif adalah dibuat sebagai bahan baku papan semen.Papan semen dibuat dari batang kelapa sawit dengan perekat semen dan berukuran 30 x 30 x 2,5 cm.  kadar perekat yang dipergunakan 2 macam yaitu 150% dan 200% terhadap berat ekselsior kering  udara.  Perlakuan perendaman ekselsior di dalam  air dingin selama 24 jam dan 72 jam.Papan semen tersebut diuji sifat fisis dan mekanisnya menurut Standar Jerman (DIN 1101). sifat fisis dan mekanis tersebut adalah kadar air, kerapatan, penurunan tebal akibat tekanan 3 kg/cm2 dan keteguhan lentur.Tujuan penelitian adalah untuk mengetahui pengaruh perlakuan kadar semen dan  lamanya perendaman wol kayu kelapa sawit terhadap sifat fisis mekanis papan semen.                         ,Hasil penelitian  ini adalah sebagai  berikut: nilai rata-rata kadar air 10,65%, kerapatan 0,47  g/cm3, penurunan tebal  akibat  tekanan 3 kg/cm2 10,55% dan keteguhan lentur 9,37 kg/cm2.     Dibandingkan dengan standar DIN 1101 kadar air dan penurunan tebal akibat tekanan sebesar 3 kg/cm2 memenuhi standar Jerman. Akan tetapi hanya keteguhan lentur papan semen yang berasal dari perlakuan kadar semen 200% dan lamanya perendaman ekselsior di dalam air dingin selama 72 jam  (16,29 kg/cm2) dapat tnemenuhi standar Jerman. Hasil sidik ragam menunjukkan pengaruh  tunggal semen dan lamanya perendaman ekselsior di dalam air dingin berpengaruh sangat nyata pada sifat keteguhan lentur dan penurunan tebal akibat tekanan 3 kg/cm2.
BAGAN PENGERINGAN DEHUMIDIFIKASI BEBERAPA JENIS KAYU INDONESIA Syarif Hidayat
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (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.1991.9.1.28 - 33

Abstract

Since it• commercial introduction in the late 1960 deh~midification haa become a  very popular method of dryift6. npeciany  for the •mailer operation drying hardwoods. Dehumidification haa also beenpractiaed in tome lndonaian  mw- milla. However, the  Information concerning the  drying achedule of lndoneaian woods were .till  limited. Thia report'Yi dacribe   the dehumidification drying  achedule for tome lndonaian   commercial woods, •which  were taken from Riau, Lampu"I  and Central Kalimantun. The method uaed in determining the d,.Ying achedule waa adapted from the method ulied by Teruawa  (1966) and Kadir (1976). The experiment were conducted in two ataga. The !ht   atage wa1 preliminary dryinf  to praume  the dryfnl propatie1, and the •cond  atage waa the dryinl  in dehumidifier to identify the real drying 1cheduk.  The  result of  the experiment indicated that the •21  wood apecie• can be classified into three drying achedule, achedule I for wood which it euat    to dry,achedule II moderate and schedule Ill  for the wood with the moat difficult to dry.

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