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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
 95   96   97   98   99 
KAJIAN EKONOMI PENGUSAHAAN MINYAK TENGKAWANG DI KALIMANTAN BARAT: KASUS BATU LAYANG O. K. Karyono; Hariyatno Dwiprabowo; Boen M. Purnama
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. 
BAGAN PENGERINGAN DASAR 16 JENIS KAYU INDONESIA Efrida Basri
Jurnal Penelitian Hasil Hutan Vol 23, No 1 (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.2005.23.1.23-33

Abstract

Indonesia memiliki sekitar 4000 jenis kayu yang baru sebagian kecil diketahui bagan pengeringannya, sehingga sering terjadi kesalahan dalam penerapan bagan. Selama ini bagan yang digunakan untuk mengeringkan suatu jenis kayu mengadopsi bagan kayu yang sudah dikenal dengan hanya berdasarkan kesamaan warna, kekerasan serta tekstur dari kayu tersebut. Akibatnya kayu yang dikeringkan mengalami penurunan mutu. Tujuan dari penelitian adalah menetapkan bagan pengeringan dasar 16 jenis kayu Indonesia berdasarkan sifat pengeringannya. Penetapan bagan pengeringan diawali dengan pengujian sifat pengeringan kayu menggunakan rnetode suhu tinggi (suhu 100ºC).Hasil penelitian menunjukkan bahwa setiap jenis kayu memiliki respon yang berbeda terhadap perlakuan suhu tinggi. Pada 16 jenis kayu yang diteliti, kayu sengon buto memiliki sifat paling tahan terhadap pemakaian suhu tinggi dan kayu sampora serta kumia batu sangat peka terhadap suhu tinggi. Berdasarkan sifat pengeringan tersebut, maka 16 jenis kayu yang diteliti telah diklasifikasikan ke dalam 10 kelompok bagan pengeringan.
PRAKTEK PEMBUATAN JEMBATAN KAYU BULAT SEDERHANA DI BEBERAPA KONSESI HUTAN DI KALIMANTAN Djaban Tinambunan
Jurnal Penelitian Hasil Hutan Vol 8, No 2 (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.1990.8.2.70 — 76

Abstract

An investigation on simple log bridge construction practices was carried out in five forest concession areas scattering in West, Central and South Kalimantan from 1987 to 1989. The purpose is to find current practices, the amount of log/ wood used and problems faced in constructing simple log bridges.It is obvious in the field that government guidance in planning, construction and maintenance of log bridges is still far from satisfaction. It is common to see that (I) the variation in bridge construction is large; (2) bridges are built to the strength far higher than required; (3) too many logs are used in bridge construction; (4) problems Of soil erosion around and under bridges are quite serious; (5) bridges are loaded with unnecessary heavy dirt and/ or gravel which may reduce the effective supporting capacity of stringers; and (6) quite often the bridge was washed out due to low construction.Effective guidance from the government in forest bridge planning, construction and maintenance is strongly needed in order to reduce excessive use of natural resources (logs), to maintain proper bridge function for longer period, and to minimize environmental disturbances. For this purpose, the invo!vement of civil engineers in handling various forest engineering problems and pacing of research activities are urgently needed.
POLA DISTRIBUSI KAYU PENGHARA UNTUK INDUSTRI PENGGERGAJIAN DI DAERAH JAWA TIMUR Subandi Antaatmadja; Rachman Effendi
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (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.1989.6.1.48 - 56

Abstract

Logs  as raw  material  of  sawmilling  industry   in East Java are provided   by  Forest  District  Administration    of  Perum Perhutani.   Every   year  Perum   Perhutani   makes   a  plan   to  distribute    the  raw  material  for  sawmilling   industry.   Perum  Perhutani,    in  particular   Unit   Two   East  Java,    has  been  striving  for  improving   the  raw  material  supplies   throught   the improvement    of  quality  of  teak  logs continuity    of  supply.In determining  the distribution   pattem   of  raw materials from  forest  districts  to individual  sawmill  transportation   cost  should   be  one  of  deciding  factors.The  aim  of  this  investegation   is  to  find   the  distribution   pattern  of  transporting   the  logs from  forest  districts   to  individual  sawmill so as to minimize   the  total  transportation   cost.  The results  of  the investigation  are :1.Jatirogo sawmill  is the largest supplier  of logs while Gresik is the smallest. 2.The minimum   total cost  of  transporting  the raw material  is Rp 229.314.150,-.
MODEL REGRESI SEBAGAI PENDUGA PENGARUH FAKTOR-FAKTOR PRODUKSI TERHADAP PENDAPATAN PETANI TUMPANGSARI STUDI KASUS KESATUAN PEMANGKUANHUTAN BOJONEGORO Akub J Abdurachman
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (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.1989.6.1.70- 79

Abstract

The  success  of  taungya  depends   on several  factors,   i.e.  site  quality,  social and economic   condition   of peasants.  This report  was made  as the  result  of  taungya  survey  in Bojonegoro   Forest  District,  East  Java. The influence  of several factors were  estimated    by  the  multiple   regression  equation.The  effect  of  site  quality   variable  is  significant,   and  the  effects  of  technology   and family  man power  variables are highly  significant,   but  the  levels  of  education,    labor  cost,  and peasant  location  do  not  significantly   influence  peasants' income   from   taungya.  The growth   of  basal trees area is influenced   by technology   and production   facility  cost  variables in highly  significant level.  This  occurence  showed   that  applying    "Inmas"  policy  on taungya  could  increased peasants  income,  and give positive effect   on  basal trees growth.   As  the site  quality  played  highly  significant   role on taungya  success,  it is necessary  to applydifferent   policy   to  each  location   with  different   site  quality.
MUTU DOLOK, RENDEMEN KAYU GERGAJIAN DAN KUALITAS PENGERJAAN KAYU AGATHIS (Agathis spec.) Bakir Ginoga
Jurnal Penelitian Hasil Hutan Vol 13, No 5 (1995): 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.1995.13.5.169-175

Abstract

Log's tapering of agathis (Agathis spec.), rangesfrom 0.5% to 5.5 % and tends to be morre silindical at 200 cm above the butt.The circularity of logs is more than 80 %, with the range of 81 % to 97 % at the butt and 83to 98 % at the top end.Recovery of wet sawn timber is 69,7 % on average. and ranges from 50 % to 82 %. The average specific gravity in air dried condition is 0.44 (= 440 kg/m3) with the range from 0, 42 to 0, 46 (420 kg/m3 to 460 kg/m3).Working properties of agathis wood is classified as easy; planing and moulding quality are classified as good to very good, while boring property is classified as medium.
PENYULINGAN KULIT MASOI (CINNAMOMUM XANTHONEURON BL) BAGIAN 1 (Distillation of Masoi bark (Cinnamomum xanthoneuron BL.). Part I) PENGARUB CARA DAN WAKTU PENYULINGAN KULIT MASOI (The effect of distilling method and time) Abdul Hakim Lukman; Bambang Wiyono; Poedji Hestoeti
Jurnal Penelitian Hasil Hutan Vol 9, No 7 (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.1991.9.7.291-293

Abstract

This  paper  describes  a preliminary  experiment  on the effect of dilstillation method  and  time on  yield of  The methods  applied   were cohobation and water-steam   method  with distilling  times of 3, 9, 18, 30 and 36 hours, consecutivety. The result   shows  that  the distilling time and method appears  to have a highly  significant effect on oil yisld and the cohobation methad produces higher oil yield compared with water-steam distillation.
MENELAAH SIFAT-SIFAT PRODUK HASIL DESTILASI KERING LIMA JENIS KAYU ASAL KALIMANTAN TIMUR Gustan Pari; Dadang Setiawan; Mahpudin Mahpudin
Jurnal Penelitian Hasil Hutan Vol 20, No 2 (2002): 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.2002.20.2.159-164

Abstract

Dry-distillation trials of five wood species from East Kalimantan were conducted at the forest products laboratories. Bogor. and the characteristics of the products (i.e. charcoal, tar and distillate fractions) were assessed to explore their possible uses as a fuel (the source of energy), activated charcoal. carbon-based fibers, metallurgy (smelter), disinfectant, and fertilizer. The distillation was performed in an electrically heated retort. The wood species were consecutively Kayu Arang (Diospyros macrophylla), Nyaling (Mastixia trichotama). Penjalin (Drypetes). Lansat Hutan (Lansium) dan Kayu Gading (Koilodepes sp.). Before conducting the experiment, these wood species were each examined for their specific gravity and calorific values. These species showed variation in their specific gravity (0.51 - 0.93) and calorific values (4465 - 4606 cal/g). Further, the products of distillation revealed some variation in their yielas, i.e. 27.55 - 33. 75 % (for charcoal), 6.53 - 12.89 % (tar). and 47.44 - 71.92 % (pyrolignous liquor). As the charcoal, its moisture content ranged from 0.89 - 1.73 %, ash content from 3.04 - 3.40 %. volatile matter from 19.15 - 20.65 %, fixed carbon from 76.05 - 77.81 %. and charcoal calorific value from 6802 - 7086 cal/g Based on the calorific value. volatile matter, and ash content of their resulting charcoal, the five species tested were all suitable as raw materials for the manufacture of metallurgy charcoal and activated charcoal.
BUDIDAYA JAMUR PERUSAK KAYU IV. KULTUR JAMUR PADA SUBSTRAT SERBUK GERGAJI YANG DIPERKAYA Sihati Suprapti; Ginuk Sumarni
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (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.1988.5.7.385-388

Abstract

Oyster  mushroom (Pleuroius ostreatus) has been cultivated on five sawdust  media  of  five wood  species, i.e. durian (Durio  zibethinus Murr.),  jeungjing  (Albizia  falcataria  (L.)  Fosb.).  manii (Maesopsis eminii Engl.),  rubber  (Hevea brasiliensis Muell.  Arg.)  and  coconut   (Cocos  nucifera  L.). The  composition  of  the  media  was 100  % saw dust, 80 % sawdust + 20 % rice  bran,  99.5 % sawdust  +  0.5 % lime,  99 % sawdust + 0.5 % lime + 0.5 % trisuperphosphate    (TSP),  and 97.5 % sawdust + 0.5 % lime  +  0.5 %  TSP + 1.5 % gypsum.  Each  media was mixed  with sufficient distilled water. The  media  was allowed to cool after  autoclave  sterilization   before  being  inoculated   with  pure  culture  of  the  mushroom.   The  mature  mushroom was harvested  daily  after  the growth  of  fruiting  body.The highest  yield  was obtained  from Rubber wood  (129.8 g per 600  g media).  The  beat composition was obtained from  sawdust  80  % mixed  with  rice bran 20  % (103.17 g per  600  g media).The  higher  Biological  efficiency  during  the four  month observation were  obtained  from  media  containing  sawdu1t 80  % mixed  with  rice bran  20 %, i.e. rubber (66.73 %),   durian  148.15  %), coconut (28.12 %),  and  manii  (22.38 %).
ANATOMI PEPAGAN PULAI DAN BEBERAPA JENIS SEKERABAT Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 22, No 4 (2004): 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.2004.22.4.247-261

Abstract

Bark anatomy of white pulai (Alstonia scholaris R.Br.).  black pulai (Alstonia angustiloba Miq.) and bintaro (Cerbera manghas L.)  were observed and described for identification purposes.  These plants  have been used as sources of traditional medicine in South East Asia.  Bark of these trees exudes white gum when it was cut; the inner parts are white.  The outer surfaces of A. scholaris and C. manghas are gray and usually lenticellate; the outer surface of A.  angustiloba contains no lenticel, and the colour is dark brown .  with narrow and shallow longitudinal fissures.  The main components of bark are phloem, parenchyma, ray, fibre, sclereid and periderm. Fibres are tangentially arranged near the cambium ofjuvenile stem of all species, then pushed outward by cambium activity as the age of the plant  increased.  Sclereids were few  and thin walled while the plants  were young and then increased in quantity and in cell wall thickness as the plants become mature.  The main anatomical differences between bark of these plants were in the morphology of the sclereids.  Sclereids of A. scholaris are short and  chubby, sclereid of A.   angustiloba are long and stout  while those of C. manghas are long and slender. A tentative identification key is presented. 

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