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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 6 Documents
 1 
Search results for , issue "Vol 12, No 3 (1994): Jurnal Penelitian Hasil Hutan" : 6 Documents clear
PENGARUH KOMPOSISI CAMPURAN SERPIB KAYU DAN KONSENTRASI LARUTAN PEMASAK NaOH TERHADAP SIFAT PAPAN SERAT BEKERAPATAN SEDANG Pasaribu, Ridwan Achmad
Jurnal Penelitian Hasil Hutan Vol 12, No 3 (1994): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (18851.795 KB) | DOI: 10.20886/jphh.1994.12.3.96-103

Abstract

A research has been done to mix four plantation wood species, i.e., Acacia mangium (mangium ), Paraserianthes falcataria (sengon), Eucalyptus urophylla (ampupu) and E. deglupta (leda) for wood pulp. Pulping process is semichemical open caustic soda. Pulp that have been processed then formed. into-MDF with wet process. physical and mechanical lests are done for density, moisture content, water absorption, thickness and volume swelling, tensile strength, modulus of elasticity :Range of pulp yield produced in the experiment was 67-82%. The mixed wood composition of 25% mangiuin, 28% sengon, 24% ampupu and 23% leda, processed wilh 35 g/l NaOH produced pulp yield in accordance with FAO standard, like wise, mixed wood camposilion of 32 % mangiun, 37% sengon and 31 % ampupu cooked with 35 and 40 g/l NaOH Physical and mechanical properties for five mixed wood compositions done in the experiment meet FAO standard if processed with 35 g/l NaOH, except for tensile strerigth. The resulis showed that wood chips composition, cooking liquor coecentration of them caused a significant effecl on tensile strength, modulus of rupture and modulus of elasticity, but these factors did not influence the density, water absorption and thickness swelling. 
SIFAT PEMESINAN BEBERAPA JENIS KAYU ASAL IRIAN JAYA Balfas, Jamal
Jurnal Penelitian Hasil Hutan Vol 12, No 3 (1994): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9704.599 KB) | DOI: 10.20886/jphh.1994.12.3.84-88

Abstract

Nine wood species collected  from  Sarong,  Iriarn Jayo,  were observed for  their machining properties.   Sawing characteristics (feed speed and surface smoothness) of each species were observed to  determine its cutting-ability. Other machining properties  (planing, shaping,  boring.  turning and sanding)  were determined according  to the modifled  ASTM D-1666 method  as  festly   described in  the  Forest  Products Research  Institute  Report  No.  160  (1982).  Planing and shaping of samples  were  observed  in wet  condition (above EMC) and again after air-drying, whereas  the remaining  properties  were  observed  only  at  air-dry condition.Results showed that most of the species couid be sawn fairly easily, and  indicaud a variation  in cutting surface qualjty, ranging from rough  to  smooth.   One species,  i.e.,   goh  (T.richadenia phiilippinensis)   was  quite difficult  to  saw for  its  irregular  (partly nterlocked) grain orientation and very  high density.   Testing of wood  samples in wet condition produced  a satisfactory planing and shaping  quality for most  wood species.  However,  testing   at   air-dry  condition  significantly revealed  a better  machining  quality. Based on the  machining characteristics  observed  on  the  nine wood species from  Sorong,  it is recommendable  to use the timbers  for  woodworking purposes.   
PENGARUH BENTUK SABUNGAN DAN JUMLAH PAKU TERHADAP KEKUATAN SAMBUNGAN KAYU Sinaga, Marolop
Jurnal Penelitian Hasil Hutan Vol 12, No 3 (1994): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (22719.984 KB) | DOI: 10.20886/jphh.1994.12.3.109-113

Abstract

The form of joint and the amount of fastener have important role in wood engineering especially for the strength of timber jointing. An investigation on the influence of joint-form using nails as fastener had been conducted. There are three treatment of joint-fonns, i,e.: V-joint, the hooked scarf joint and but joint. Two treatment of the amount of nails as fastener use are two and four nails. The strenght test was conducted according to ASTM standard.The results of investigation show that :1. The highest value of modulus of elasticity (MOE) is produced by the treatment combination of hooked scarf joint and two nails as fastener with the value of 148,082 kg/cm2.2. The treatment combination of hooked scarf joint with two and four nails as fastener produced quite high value of modulus of rupture (MOR) of 1.520 and 1,593 kg/cm2,respectively.3. The hooked scarf joint is generally better then the V-joint or butt joint. 
KAJIAN EKONOMI PENGUSAHAAN MINYAK TENGKAWANG DI KALIMANTAN BARAT: KASUS BATU LAYANG Karyono, O. K.; Dwiprabowo, Hariyatno; Purnama, Boen M.
Jurnal Penelitian Hasil Hutan Vol 12, No 3 (1994): 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.1994.12.3.104-108

Abstract

Tengkawang (illipe) oil is an important non-wood product in West Kalimantan Province. This oil is produced from illipe nut by processing it using a simple pressure technique. lllipe oil production in West Kalimantan in 1992 was 5,358 tonnes and as many as 341 tonnes had been exported with the export value of not less than Rp, 21 bilitons.The study showed that production cost of illipe oil per ton was Rp. 1.963,245. Gross revenue received by representative illipe oil plant was Rp. 7, 464, 111.620 per year.Break even point (BEP) in illipe oil production was 1,260. 00 kg per day or Rp. 786,744.00 per day. This means that to achieve BEP, the plant should produced illipe oil at least 25.78% of its installed capacity or around 181,69 ton per year. 
PROSPEK PENGEMBANGAN TANAMAN SUKUN DITINJAU DARI KANDUNGAN KIMIA DAN ASPEK LAINNYA Gusmailina, Gusmailina; Komarayati, Sri
Jurnal Penelitian Hasil Hutan Vol 12, No 3 (1994): 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.1994.12.3.77-83

Abstract

Breadfruit  (Artocarpus artilis  Forsberg) is  a multipurpose tree species  which  is suitable  to be extensified.  The report  deals with. chemical analysis  of  breadfruit wood. The  results indicated  that  cellulose contenl  53.58 %;  lignin cotuet 28.09%;  pentosan    content 14.00%;  solubitity in cold  water 3.13  % ;  in hot waler  4. 14 %;  alcohol-benzena 3. 40% and in NaOH 1 %  20. 03 % ,  moisture content 10.14 %; ash comesu 3. 60%; silica content  3. 10% and calorific value 4368.82  kcal/gr. Baseak on the components,  breadfruit  wood  can  be utilized  as sources of raw material for pulp  and paper  or rayon.  Besides it is also an alternative for food source and source of income for rural people.
BEBERAPA CATATAN TENTANG EBONI DI SULAWESI Endom, Wesman
Jurnal Penelitian Hasil Hutan Vol 12, No 3 (1994): 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.1994.12.3.89-95

Abstract

Central Sulawesi  is one of the areas where  Eboni species  (Ebony spp) grows naturally.  The other areas are North Sulawesi  and North Maluku. The species have valuable  wood  and many people like them due to their artistic and black appearance.In the  last few  years,  the species  heve been decreasing  and  today  they can  be categorized  as  endangered  or  at  least as  in. vulnerable codition. Since 1988, in accordance to the Ministry of Forestry Decision No 988/Menhut-IV/1988, the harvesting of Eboni had been banned.The observation of the logged forest  area shows that  the number of Ebony trees in the field  is very small.  To  protect  the species from  their extinction,  the strict regulations are  required and the activities of the planting and tending need to be intensifed.The other observation result are as follows :1. Most felling  activity  had been  carried out on the  small  diameter  of  35 cm while the  trees  are still growing  well to reach  larger diameter  (60 cm or more).2. Part of the  wood  utilized  was only heartwood  that had  the  volume  of about 42%  ot total  volume.  Therefore,  to  have  larger volume, is  better  to harvest  only  big trees  of diameter  60 cm or more.3. THe clear bole of  the  trees of diameter  35 cm is ranging from 10-15 m long.4. Futher research on  the increment, harvesting cycle and Silviculture  techniques be conducted in order  to manage  the species sustainably.

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