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Articles 8 Documents
Search results for , issue "Vol 11, No 4 (1993): Jurnal Penelitian Hasil Hutan" : 8 Documents clear
PENGARUH ASAL DAN UMUR POHON TERHADAP SIFAT PENGERINGAN KAYU SENGON (The effect Age and Location on the drying properties of sengon wood) Basri, Efrida; Hidayat, Syarif
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.
ANALISIS HARGA KAYU LAPIS TERHADAP NEGARA PESAING : Kasus Malaysia (A Price Analysis of Plywood on Competitor Country : Case of Malaysia Effendi, Rachman
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 (6622.195 KB) | DOI: 10.20886/jphh.1993.11.4.157-162

Abstract

Nowadays,  the role  of timber industry in Malaysia becomes more important. The rapid growth of timber industry can be illustrated by the increase  of the production  level of plywood and veneer. An annual increase of plywood production  since 1960 to 1988  was 1,519 %   The  increase  of plywood  production  is facing  a  number  of problems  such  as  decreasing in supply  of logs,  furher processing  of log is still undeveloped,  competition from  non wood materials such as steel,      concrete,  alumunium  and plastic,. Also price competition with  competitor countries such  as Indonesia and Philippine.   The objectives of this paper  is to study  the timber industry development,  especially  plywood industry and economic factors  which influenced Malaysia's plywood price where. a multiple regression analysis was used to analyze the plywood price.The results of the analysis shows that export price of plywood from  the competitor countries especially indonesia  and Philippines has influenced very significantly to the price fluctuation of Malaysia plywood.  It explained up to 88  % of the price fluctuations.  the remaining  12  %   is  explained  by some  other factors.   In  other  words,  the  competitions  price   is the  most prominant factor   in determining  the price fluctuation of Malaysian plywood.
ANALISIS FINANSIEL BEBERAPA PRODUK INDUSTRI KAYU HILIR : Kasus Suatu Perusahaan di Propinsi Kalimantan Selatan (A Financial Analysis on Several, Secondary wood Products : A case of an enterprise in Province South Kalimantan) Effendi, Rachman
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 (5610.138 KB) | DOI: 10.20886/jphh.1993.11.4.144-147

Abstract

Presently, the role of forestry sector in indonesia becomes very important. In 1990/1991,forestry  sector  has contributed the second largest foreign  exchange after oil and gas.  For the last few  years,  a transition has taken place  in the forest  industries, namely from primary industries to secondary   or tertiary industries which is expected to increase added value of forest products.  The objective of this study is to analize.  the profitability of an enterprise producing several secondary products such as moulding, dowet, jointed  board, finger jointed product, and table top.The results showed    that annual production  of moulding, dowel, jointed board, finger jointed   product,  and table top were 26.880 m3,  12,000 m3, 5.760 m3, 5.760 m3, and 2,880 m3. respectively. Production costs per cubic meter of moulding, dowel, jointed  board, finger  jointed  product,   and  table  top  were  Rps 618.053,-,  Rps    612.333,-,  Rps  631.537,-,  Rps  622.967,-  and  Rps 654.417,-, respectively. Payback period  was relatively short (4.04 years),  Net present  value (NPV) showed positive  value, and internal rate of return  (IRR) was higher than  average  bank interest. However,  NPV was sensitive to a decrease  in production,   15  %  decrease  in production would cause NPV to become negative.        
FAKTOR KOREKSI VOLUME DOLOK YANG DIUKUR DI SUNGAI (LOGPOND) (Correction factor of logs volume meaured in logpond) Endom, Wesman; Sukanda, Sukanda
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 (29255.067 KB) | DOI: 10.20886/jphh.1993.11.4.163-167

Abstract

Measuring the volume of logs which have been rafted on the rivers is very difficult. The difficulty is mostly in measuring the average top and bottom diameters of logs because the largest portion of logs are inside the water.In this paper, the results of measurements carried out both on the ground and in the river are described. Lately, log measurement in the river is necessary because:a. Volume of logs sent to industries would be measured in the river.b. Many logs of the illegal cutting found are rafted in the river.The observation reveals that :1. Volumes of logs measured on the ground and in the river are significantly different.2. From the sample of 60 logs of Dryobalanops spp. it is found that the total volume measured on the ground is 273,18 m3, while the total volume measured in the river is 262, 76 m3. The total difference is 10,42 m3 or 0,04 m3 per_m3 in average.3. the correction factor (FK) then is 0,04 m3 per m3 or 3,81 %. It means that the volume of log measured in the river is smaller than the volume Measured on the ground. Therefore, the volume measured in the river should be multiplied with the correction factor of 1.04 to obtain the real volume as measured on the ground.
PENGARUH PEMANENAN HASIL HUTAN TERHADAP TINGKAT KERUSAKAN. TEGAKAN TINGGAL PADA DUA HAK PENGUSAHAAN HUTAN (HPH) DI KALIMANTAN BARAT (The effect of logging to residual stand damages in two forest concessions in West Kalimantan) Suhartana, Sona
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 | DOI: 10.20886/jphh.1993.11.4.153-156

Abstract

Disturbed soil and vegetation caused by logging operation is difficult to be avoided, even in good logging operation.Past studies related to this problem.  shows that forest  concessions in Sumatera and Kalimantan used Indonesia Selective Cutting System (TPTI) as a basic activity in logging operation. However, because of the weakness of goverment control activity, most of the companies were looking for  financial benefit only and neglect the sustainability of the forest.The aim of this study is to assess the number of commercial trees (diameter 20 m and up) damaged during logging operation.The study was carried out in two forest  concessions:  PT. Batasan/A and PT. Tanjungpura Bhakti/B in West Kalimantan,The results shows that :1.   The average percentage  of commercial trees damaged of diameter 20.  cm and up during  logging operation   are 4. 6  %  in A concession and 5. 6 % in B concession.2.   The average number of trees in concession A are 8. 9 trees/ha while in concession B is 7. 8 trees/ha.
PENGAWETAN TUJUH BELAS JENIS KAYU SECARA RENDAMAN DINGIN DENGAN BAHAN PENGAWET BFCA (Cold Soaking Treatment of Seventeen Wood Species Using BFCA Preservative) Abdurrohim, Sasa; Barty, Barty
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 | DOI: 10.20886/jphh.1993.11.4.137-143

Abstract

Wood samples of 17 species measuring 5 cm x 5 cm x 30 cm were treated with BFCA preservative by cold soaking treatment were 1, 3 and 5 days with preservative concentration of 5 and 10 percent.Taking retention and penetration requirements into consideration for wood uses under roof and in the Open air, both .Without ground contact, the resulls that seven wood species could be satisfactorily treated under the experimental conditions. However, it is important to note that three of the seven species, i.e. tumbawa (Dysoxylum sp.), cempaka (Ehmerilla ovalis) and merawan (Hopeasp.) falfilled only the requirements for wood usage under the roof without ground contact. The treatment schedule proposed for the seven wood species is also presented in this paper.
STABILISASI DIMENSI PADA KAYU TANAMAN KARRI (Eucalyptus diversicolor) DAN JARRAH (E. marginata) - Bagian II : Furfurilasi (Dimensional Stabilization on Regrowth Karri (Eucalyptus diversicolor) and Jarrah (E. marginata) Part II : Furfurylation Balfas, Jamal
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 | DOI: 10.20886/jphh.1993.11.4.134-136

Abstract

Wood blocks of karri and jarrah measuring 10 mm (radial) x 25 mm (longitudinal) x 100 mm (tarigential) were ovendried for. 48 hours at 105°C prior to treatment. Furfurylation was carried out by soaking wood specimens in a 98. % furfuryl alcohol solution containing 1 % (w/w) of ZnCl2 as catalist. Three soaking times, i.e., 12, 24 and 48 hours were used. Treatment results are expressed in terms of weight (WG) and volumetric (VG) gains. The ability of treatment to dimensionally stabilize wood blocks is expressed as anti- swelling efficiency (ASE). Results showed that furfurylation imparted substantial increase in weight, volume and dimensional stability of both regrowth eucalypts. Alike acetylation (reported earlier in Part I),furfurylation on karri specimens revealed higher weight gain,volumetric gain and ASE than jarrah. The rate of furfurylation significantly increased with increasing soaking time to 48 hours. Although furfurylation imparted a high degree of swelling reductions comparable to those obtained by acetylation, the furfurylated specimens and a lower ability to resist swelling during prolonged wetting exposure.
KELAYAKAN EKONOMI BAHAN BAKU INDUSTRI SEKUNDER DARI LIMBAH KAYU PEMBALAKAN DI PROPINSI JAMBI (The economic feasibility of utilizatiion of logging waste for secondary industry’s raw materials Jambi Province) Karyono, O K; dwiprabowo, hariyatno
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 | DOI: 10.20886/jphh.1993.11.4.148-152

Abstract

Raw material for the wood proccesing industries in Jambi Province, is supplied by the concessionaires in Jambi Province, as well as from other. regions such. as from Riau Province. As the number of wood industries increase raw material supply for wood industries in jambi need to be increased. To fill in part of the shortage, the uSe of logging waste needs to be encouraged.Of forest area of Jambi Province about 2,9 million ha, the amount of logging waste is estimaled around 162,118.51 cum. the amount of logging waste which have been used by some concessioners in the Jambi Province accounted for 3,83 percent This figure impliS. that logging waste utilization should be intensified, so raw material for secondary industries can be increased without necessarily to increase logging area, and it wil also save forest resurces and increase added value.Old study show that use of logging waste prpvides profit margin as much as : Rp. 6. 750,- per cubic meter for concessionaire,Rp.28.150,- for sawmill and Rp. 42.525.- for blackboard industries.

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