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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
 29   30   31   32   33 
HUBUNGAN ANTARA KETEGUHAN GESER DENGAN KETEGUHAN REKAT INTERNAL PAPAN PARTIKEL Paribotro Sutigno; I M Sulastiningsih
Jurnal Penelitian Hasil Hutan Vol 10, No 1 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7847.241 KB) | DOI: 10.20886/jphh.1992.10.1.16-19

Abstract

One of  the  partideboard  properties that  must be tested  is internal  bond  strength  or tensile  strength  perpendicular to surface. the  testing  procedure is relatively  difficult   because  before  applying  a tension  load vertically  to the  board  face, the  specimen  must   be  adhere  to  steel  or  wood   blocks  for  seuerol hours  to obtain  good  adhesion.  To  simplify   the pro- cedure, the  use  of  another   testing procedure called shear  strength   test  was tried.  It  is found   that  there  is  a relationship between   shear strength   (X)  and  internal  bond  strength   (Y)   which  can  be expressed   by   linear  regression  equations  i.e,: Y  = -  0.105  +  0.180   X  for  interior  particleboard  and  Y =  -  0.925  + 0.398  X  for  exterior  particleboard.   The  interior particleboard  specimens were  tested   under  dry   condition  whereas  exteriorparticleboard  specimem were boiled  for  two hours  before  testing.  Both regression equations can not  be pooled,  Based  on  the  result  it can be cohcluded  that  internal bond  strength   of  particleboard  can  be estimated by  using  its shear strength value. 
KARAKTERISTIK ARANG AKTIF TEMPURUNG BIJI NYAMPLUNG (Calophyllum inophyllum Linn) Santiyo Wibowo; Wasrin Syafii; Gustan Pari
Jurnal Penelitian Hasil Hutan Vol 28, No 1 (2010): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2591.051 KB) | DOI: 10.20886/jphh.2010.28.1.43-54

Abstract

Limbah tempurung nyamplung dapat dimanfaatkan sebagai arang aktif untuk bahan penyerap gas dan cairan. Tujuan penelitian ini adalah untuk mengetahui karakteristik arang aktif tempurung biji nyamplung. Tempurung nyamplung diarangkan, kemudian direndam dalam larutan H3PO4 pada konsentrasi 0%, 5% dan 10% selama 24 jam. Selanjutnya diaktivasi dalam retort pada suhu 700°C dan 800°C selama 60 dan 120 menit. Kualitas arang aktif tempurung nyamplung diuji menggunakan SNI 06-3730-1995. Hasil penelitian menunjukkan bahwa kualitas arang aktif tempurung nyamplung terbaik diperoleh pada aktivasi perendaman H3PO4 10% pada temperatur 700°C selama 120 menit. Pada kondisi tersebut diperoleh rendemen sebesar 52%, kadar air 8,25%, kadar zat terbang 7,41%, kadar abu 4,27%, kadar karbon terikat 88,32%, daya serap iod 839,11 mg/g dan daya serap benzena 13,65%.
STABILISASI TANAH LIAT DENGAN KAPUR PADA KONSTRUKSI BADAN JALAN HUTAN DI PULAU LAUT Rahardjo S Suparto; S Sutopo
Jurnal Penelitian Hasil Hutan Vol 1, No 2 (1984): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (18152.856 KB) | DOI: 10.20886/jphh.1984.1.2.11-22

Abstract

Subgrade  construction is an important part in forest  road building,  Subgrade soils with a high clay content  could  not be used satisfactorily as forest  road construction material  unless it is treated  to increase its stability.  The improvement of the  physical characteristics of clay  soils  related  to  subgrade  construction  can  be achieved  by  mixing  lime  of certain proportion into   the soil. The purpose of this investigation  is to determine the amount  of lime required for subgrade stabilization  which  have high clay content  in Pulau Laut,  South  Kalimantan The investigation  reveals the following :1.  The  efective  amount   of  lime  stabilization of  soils  is 7 percent of  the dry  weight  of  the  soil, resulting  in the following  physical  properties  :-  Bearing capacity  is 167 kg/cm2 at air dry  condition,-  Percent  of swell is 2.3,-  Plasticity index  is 25.5,  and-  pH is 9.00.2.  Stabilization   with  7 percent  lime is most  effective  for use in forest  road subgrade containing  about  66% clay. 
PENGARUH CARA EKSTRAKSI TERHADAP SIFAT FISIKA DAN KIMIA SAGU R Sudradjat
Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6093.673 KB) | DOI: 10.20886/jphh.1985.2.1.18-21

Abstract

The aim of this investigation is to evaluate  the effect of extraction methodes on physical  and chemical properties  of sago. Extraction  methodes  comprise  of  fermentation,  mechanical, and  traditional.The result indicated that sago yield varies from 20,19%  - 40,12%, acidity  0,89 - 0,98,  moisture  13,39% -14,29%, ash 0,15%  - 0,32%, protein 0,38%  - 0,46%, crude  fiber 0,27%  - 0,31%,  fat  0,17%  - 0,23%  and amylum  72,64%  - 88,12%.Mechanical  extractions  gave  the  highest  yield  and  amylum  content. Fermentation  methode  show more  acid  than traditional.  The traditional  methode presents the  highest ash content. This included that the mechanical methode  seemed to be preferable   for  commercial application.
SIFAT PAPAN PARTIKEL DARI KAYU MANGIUM Suwandi Kliwon
Jurnal Penelitian Hasil Hutan Vol 20, No 3 (2002): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4349.521 KB) | DOI: 10.20886/jphh.2002.20.3.195-206

Abstract

Ten year old Acacia mangium wood species from Sukabumi area (West Java) was used as the raw material of exterior type particleboard glued with phenol formaldehyde.Single layered particleboard with density target of 0.5 - 0. 70 g/cm3 with its nominal thickness of 1.50 cm. The dimension of particleboard was 30 cm x 30 cm x 1.50 cm. The treatment of wood particle were three kinds i.e. unsoaked, soaked for 24 hours and 48 hours in cold water. The objective of the study was to determine the effect of treatments on the physical and mechanical properties of particleboard. The result indicated that the modulus of rupture (MOR), air dry internal bond, the thickness swelling after soaked during 2 hours and 24 hours in cold water, 3 hours after soaked in boiling water and 3 hours soaked in boiling water and dried (absolute dry), moisture content and density of mangium particleboard met the Indonesian National Standard for particleboard. The treatment of wood particle soaked in cold water is not recommended.
ANATOMI DAN KUALITAS SERAT ENAM JENIS KAYU KURANG DIKENAL DARI CIANJUR SELATAN, JAWA BARAT Krisdianto Krisdianto
Jurnal Penelitian Hasil Hutan Vol 25, No 3 (2007): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13959.324 KB) | DOI: 10.20886/jphh.2007.25.3.183-202

Abstract

 Bahan baku alternatif  yang digunakan  oleh  industri  perkayuan nasional  saat ini lebih   banyak berasal dari hutan tanaman serta pemanfaatan jenis  kayu kurang dikenal.  Optimalisasi pemanfaatan kayu kelompok  ini memerlukan informasi mengenai struktur anatorni dan kualitas serat  dari  setiap jenis yang  digunakan.   Dalam  penelitian ini  dilakukan determinasi   karakteristik  anatorni  dan kualitas serat pada enam jenis  kayu kurang dikenal  yang telah  digunakan oleh  industri  perkayuan setempat.Hasil penelitian menunjukkan bahwa warna kayu yang diamati bervariasi dari coklat kemerahan pada  kayu Huru  mentek  dan  Manglid, sampai coklat pada  kayu Mimba  dan  kuning  pada  kayu Huru   kacang, Tunggeureuk   dan  Beleketebe. Perbedaan  antara  kayu  teras   dan  gubalnya  jelas terlihat,   kecuali pada  kayu Manglid. Lingkaran  tumbuh   jelas   terlihat  kecuali pada  kayu  Huru mentek  tampak  agak samar.  Lingkaran  tumbuh  terbentuk  oleh adanya parenkim  pita  pada  kayu Tunggeureuk,  Manglid,  Beleketebe  dan  Mimba,  sedangkan  pada  kayu Huru   kacang,  lingkaran tumbuh  terlihat  pada  susunan pembuluh  yang berukuran  lebih  kecil dan  tersusun   memanjang terkesan membentuk  garis  memanjang.  Pembuluh  seluruhnya tersebar  membaur  dan kecuali pada kayu tunggeureuk  pembuluh  bersusun   dalarn kelompok  radial  atau  diagonal  miring.  Diameter tangensial pembuluh  pada umurnnya berukuran  agak besar sampai sedang.  Kualitas serat keenam jenis  kayu dalam hubungannya sebagai bahan kertas termasuk dalam kelas sedang (II) sampai bagus (I).
PENGARUH ASAL DAN UMUR POHON TERHADAP SIFAT PENGERINGAN KAYU SENGON (The effect Age and Location on the drying properties of sengon wood) Efrida Basri; Syarif Hidayat
Jurnal Penelitian Hasil Hutan Vol 11, No 4 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4881.323 KB) | DOI: 10.20886/jphh.1993.11.4.129-133

Abstract

This paper discusses the drying properties of sengon (Paraserianthes falcataria) from plantation forest and natural forest. The material used in the study were selected from 5, 15 and 25 year old plantation forest in Jawa Timur, and from natural forest in Maluku. The drying method used in the study were air and solar drying. Wood from plantation forest contain a large portion of juvenile wood which shrink more than the wood from mature wood. As a consequence the wood from plantation forest are more prone to warping.This study reveals that tree age has a significant effect on the drying properties, and wood from natural forest needs more time to dry.Solar drying method are faster up to 40 % of the air drying method.
PENGARUH TIPE TANAH TERHADAP KOMUNITAS RAYAP TANAH Ginuk Sumarni; Agus lsmanto
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3457.953 KB) | DOI: 10.20886/jphh.1987.4.4.22-25

Abstract

Beside temperature  and humidity,  soil type is an important factor  that effects  termite population  size.  From  three types of soil selected for the study  (association  of dark grey alluvial and greyish  brown,  grey regosol and association  of  low peat  glei and grey alluvial),  three  termite species, namely Microtermes insperatus Kemner, M. incertoides Holmgren and Macrotermes  gilvus (Hagen) were observed.  These three species of termite inhabited  the low peat  glei and grey alluvial soil.  In  the association  of  dark  grey alluvial  and greyish  brown  soil, only  M.  gilvus  was observed.  This same species of  termite  was also spotted  the grey regosol soil.The number of termite individuals found in the three  types  of soil  were obviously  different. The greatest  number  were observed  in the association  of low peat  glei and grey alluvial soil.
PEMBUATAN ARANG 4 JENIS BAMBU DENGAN CARA TIMBUN Tjutju Nurhayati
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.
SIFAT FISIS DAN STABILISASI DIMENSI BEBERAPA JENIS BAMBU KOMERSIAL Barly Barly; Agus Ismanto; Dominicus Martono; Abdurachman Abdurachman; Andianto Andianto
Jurnal Penelitian Hasil Hutan Vol 30, No 3 (2012): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2643.839 KB) | DOI: 10.20886/jphh.2012.30.3.163-170

Abstract

Penelitian ini bertujuan untuk memperoleh formula yang dapat digunakan untuk memperbaiki sifatfisis dan stabilitas dimensi bambu agar optimal penggunaannya sebagai bahan konstruksi. Hasilpenelitian menunjukkan panjang batang, jumlah ruas dan panjang ruas pada tiap jenis bambu nilainyabervariasi. Kadar air bambu segar bervariasi bergantung jenis, yaitu bambu hijau atau ater (236,15%),mayan (181,52% ), tali (117,32% ), hitam (111,83%). Kerapatan bambu bervariasi, yaitu bambu tali(0,93), andong (0,88), mayan (0,83), hijau atau ater (0,79), hitam (0,78), dan betung (0,78). Kerapatan dariarah luar ke dalam pada arah potong melintang, bagian luar lebih tinggi dibandingkan dengan bagiantengah dan dalam. Penyusutan volumetrik bambu mayan (9,04%), betung (15,75%), andong (16,32%)dan ater (38,45%). Dengan perlakuan bambu ater paling rendah penyusutannya, yaitu -9,21% (PEG)dan yang tertinggi pada bambu andong, 12,13% (air). Persentase ASE tertinggi pada bambu ater,95,57% (LO) dan yang terendah pada bambu mayan , yaitu -144,92 (SCa). Bahan yang memberi respon pada nilai % ASE disusun secara berurut dari tertinggi, yaitu LO, PEG, SPo, D, B, A, C. Bahan LO paling sedikit diserap (diabsorb) oleh semua jenis bambu, disusul oleh PEG kecuali pada bambu hitam. Bambu yang paling sedikit menyerap bahan yaitu andong (14,12%) dengan LO dan yang paling banyak yaitu bambu hitam (137,54%) dengan PEG. Secara umum bambu hitam menyerap paling banyak semua jenis bahan yang digunakan. Retensi bahan dalam bambu disusun secara berurut dari yang tertinggi adalah PEG, LO, SCa dan SPo. Jenis bambu yang memiliki nilai retensi tertinggi secara berurut, yaitu hitam, ater, tutul, andong, mayan dan betung.

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