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Articles 6 Documents
Search results for , issue "Vol 10, No 5 (1992): Jurnal Penelitian Hasil Hutan" : 6 Documents clear
ANATOMI DAN IDENTIFIKASI SEPULUH JENIS KAYU DARI SULAWESI UTARA Mandang, Y I
Jurnal Penelitian Hasil Hutan Vol 10, No 5 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9806.871 KB) | DOI: 10.20886/jphh.1992.10.5.167 - 178

Abstract

Gross  and anatomical features of ten wood species from North Sulawesi were observed and described. Two of them hove light colour and considerable hard, and therefore recommended for ramin substitute. They are Pangium edule and Neonauclea sp.For  identification   purposes  several  important  features  were  noted:  oil  cell  in  Elmerillia,  perforation  plate scalariform  in Elmerillia  and  Laplacea,  vertical septum  in axial parenchima  strand  of Serianthes,  fiber septate in Pangium, Aglaia and Desoxylum.Serianthes minahassae contain fiber with best quality. It is therefore recommended for pulpwood.
PENGARUH SENYAWA BORON TERHADAP BEBERAPA SIFAT PAPAN PARTIKEL KARET (Hevea brasiliensis) Memed, Rodjak; Sulastiningsih, I M; Sutigno, Paribotro
Jurnal Penelitian Hasil Hutan Vol 10, No 5 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5994.309 KB) | DOI: 10.20886/jphh.1992.10.5.160 - 166

Abstract

The objective of the study was to determine the effect  of boron concentration and resin proportion on some properties of rubberwood (Hevea brasiliensis) particleboard. Boron concentrations used were 0, 0.25,  0.50,  0. 75 and  1.0%, and resin proportions in urea formaldehyde were 10, 12 and 14% dry weight basis.The results indicated that the addition of boron compound to porticleboard reduced the values of bending strength, internal bond strength and shear strength but increased the thickness swelling and water absorption of particleboard. Mechanical properties of particleboard  increased with the increase of resin proportion. Thickness swelling and water absorption decreased as the resin proportion  increases.  Physical and mechanical properties  of particleboard  treated with boron compound up to 1% cocentration level and bonded with urea formaldehyde  at 12% or 14% resin propotions were all  met  the  SII  standard requirements,  except  for  internal  bond  strength.  Compared  with  FAO  standard, particleboards that met all the standard requirements  were those with 14% resin proportion.
PENGARUH PENGGUNAAN CAMPURAN PUPUK ORGANIK DAN ANORGANIK TERHADAP PERTUMBUHAN ANAKAN SENGON (PARASERIANTHES FALCATARIA) Sudradjat, R; Komarayati, Sri
Jurnal Penelitian Hasil Hutan Vol 10, No 5 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5339.197 KB) | DOI: 10.20886/jphh.1992.10.5.150 - 155

Abstract

The purpose of this work is to study the effect of organic and anorganic fertilizer mixture  to the growth of sengon (Paraserianthes  falcataria)  seedlings. The properties tested were height increment, dry weight and number of branches.The results show that the application of fertilizer and aerobic compost combination gave a highly significant effect on promoting plant  height and dry weight of sengon seedlings as well as the number of branches,  while the application of aerobic compost had no effect on branching,Combination of 50% compost and 5 gram chicken manure give the highest plant height of 28. 34 cm,  while the lowest is in the treatment  of 0.25 gram NPK, that is 1.48 cm. Combination of 40% compost and 5 gram chicken manure give the highest plant dry weight of 0.89 gram, while the lowest is in the NPK treatment.
INTENSITAS PENGGUNAAN JALAN HUTAN SEBAGAI PRASARANA PENGANGKUTAN KAYU DI TIGA PERUSAHAAN HUTAN DI JAMBI DAN KALIMANTAN SELATAN Dulsalam, Dulsalam
Jurnal Penelitian Hasil Hutan Vol 10, No 5 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (10281.295 KB) | DOI: 10.20886/jphh.1992.10.5.179 - 185

Abstract

This paper presents the results of an investigation on the use of forest roads as log transportation infrastructure at two logging companies in Jambi  and one logging company in South Kalimantan  carried out in 1990. The objective is to find out the information of the intensity of forest roads use as log transportation infrastructure.  For that purpose, the data on forest road length (km) and actual log production  (m3)  for the period of between three and  ten years were  collected. The results reveal that:1.   Forest roads at several forest companies in Sumatra  and Kalimantan  were commonly unpaved, and therefore, can only be used when they are dry.2.  The average lengths of forest roads built by A, B and C  companies were 6.050 km/year  with the range of between 2.000 and  13.000  km/year;  and  12. 733 km/year  with  the range of between 7.600  and  19.800  km/year;   11.275 km /year with the range of between 2: 565 and 22. 650 km /year, respectively.3.   Actual  log production  ranged from 18,045,48  to 45,555.60  m3 /year  with  the average of 27,249.88 m3 /year for A company; from 19,484.07 to 41,526.29 m3 /year with the average of 31,485.36  m3 /year for B company; and from 15,892.25 to 54,553.95  m3 /year  with the average of 36,745.30  m3 /year for C company.4.   Correction factor to be used in calculating actual production from target production at A, B and C companies were respectively 0. 74 with the range of between 0.36  and 0.98;  0.97  with the range of between  0.96  and 0.99; and 0. 76 with the range of between 0.32  and 1.09.5.  The intensity of forest roads use as log transportation  infrastructure at A, B and C forest companies range between 1,503. 79 and  17,234.05  m3 / km-year  with  the  average of  7,165. 73 m3 / km-year;  between 984.04   and  4,400. 75 m3 / km-year  with the average of 3,076.61  m3 / km-year; and between 1,352.53  and 13,292. 74 m3 / km- year with the average of 5,147.53  m3 / km-year, respectively.
PEMBUATAN ARANG AKTIF DARI SERBUK GERGAJI SENGON UNTUK PENJERNIH AIR Pari, Gustan
Jurnal Penelitian Hasil Hutan Vol 10, No 5 (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.1992.10.5.141 -149

Abstract

Experimental  study  on Paraserianthes falcataria sawdust  to produce activated  charcoal for water  treatment  is reported in this paper.  The purpose  of this  research   is to study  the effect of raw material  treatment  and  chemical addition on the activated charcoal yield and quality.The result shows that the yield of activated charcoal range from 22.88 - 35.98 %, moisture content from 1.43 - 5.85%, volatile matter from 9.16 - 15.39 %, fixed carbon from 60,90 - 75.33 %,.ash  content from 15.51 - 23.71 % and silica from 8.89-  13.69%.The adsorptive capacity of iodine, benzene and sulfuric acid respectively range from 444.26 -  761.40 mg/g, 1.23 - 8.83 % and 17.40 -35.26 %. Good quality of the activated charcoal was produced from charcoal of sengon sawdust with sodium  carbonate as activator. This is especially  for the adsorptive capacity of iodine where this criteria has met the commercial standard requirement  of the Americoal  Water Work Association and the Indonesian Industrial Standard.The quality of water after treatment with the activated charcoal shows that the iron (Fe) content range from 0.00 - 0.09mg/1,  calsium  (Ca) from  3.35 - 22.66 mg/1,  sodium  (Na) from 8.80 -  9340.0mg/1,  mangan  (Mn) from  0.00 - 0.08mg/1,  nicel (Ni) from  0.03 -  0.77mg/1,  chloride (Cl) from 21.0 -  170.0mg/1,  ammonium  (NH4) from  0.00 - 0.44 mg / 1  and chemical oxygen demand (COD) range from 21.40 - 61.20 mg / 1
KERENTANAN BEBERAPA JENIS KAYU TERHADAP SERANGAN KUMBANG AMBROSIA Sukartana, Paimin
Jurnal Penelitian Hasil Hutan Vol 10, No 5 (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.1992.10.5.156 - 159

Abstract

Ambrosia  beetles  belong to the most destructive wood borers  that attack fresh cut logs. To determine the damage of some wood species caused by the pests, a field study was conducted by calculating the intensity  of the beetle infestation on the surface of logs in a log yard of a logging operation, and on the surface  of cores of peeled logs of a plywood mill.Observations on the yard showed that most of the logs had been severely  damaged by the beetles. Hundreds  of holes per-square meter were found on the surface of the logs. Meranti (Shorea  spp) logs might  belong to the most susceptible ones, and then consecutively  followed by the bangkirai (S.laevifolia),   mersawa (Anisoptera   spp), keruing (Dipterocarpus spp), and others. Only few logs seemed to be intact.Many holes of the beetle infestation were also appeared on the surface of cores of the meranti  species, but not so on the keruing's.  That  could be implied  that the beetles attacking the meranti  are able to tunnel  very deep, to reach the heart of the wood group.

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