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Articles 6 Documents
Search results for , issue "Vol 8, No 3 (1990): Jurnal Penelitian Hasil Hutan" : 6 Documents clear
PRODUKTIVITAS DAN EFISIENSI PRODUKSI GONDORUKEM DI BEBERAPA PABRIK DI JAWA TENGAH Productivity and Efficiency of Several Collophonium Factories in Central Java Sylviani, Sylviani
Jurnal Penelitian Hasil Hutan Vol 8, No 3 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2325.553 KB) | DOI: 10.20886/jphh.1990.8.3.95-99

Abstract

Collcfohonium industries   in  Cen'tralJava are potential  enough to be developed •   a• source of income for people liuirw near the forest  a  well a  for Perum Perhutani.Bated  on the study at several collophonium factories, the averagelabourproductivity for administl'ativelab(!urandtechnician were 742  ton/man and 121,8 tori/man rapeetively.                                                                                      Jlaclainaryeflkiency averageWal    72 %, and that for        material Wal,    189 %. The avm11te ef'/fciency for Coat used by private tac,torywaa 1,86 and.for Perum Perhutani 1,83. Actual total ~ost spent were Rp. 83,886,288   and Rp. 90,27'!,158,ctively,     for factories run by private sector and Perum Perhutani.
PENGARUH KOMPOSISI PEREKAT FENOL FORMALDEHIDA TERHADAP.KETEGUHAN REKAT KAYU LAPIS SENGON Memed, Rodjak; Santoso, Adi; Sutigno, Paribotro
Jurnal Penelitian Hasil Hutan Vol 8, No 3 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1710.446 KB) | DOI: 10.20886/jphh.1990.8.3.106-108

Abstract

In the future. phenol formaldehyde resin will be used in greater quantity due to ita capability inproducing weather and boil•proof plytDood. This paper discribet two aapects, i.e. ':  the effect of weight ratio of phenol and formaldehyde on the propemea  of phenol formaldehyde  resin and plywood  bonding strength; and the effect of filler proportion on the bond.inf ltrength of se111on plywood glued with phenol formaldehyde.77ae resulta showed that the properties of phenol formaldehyde resin which were produced in three different com- positions were met  Indonesian Standard. The effect of filler proportion on plywood  bonding strenfth waa significant, but the effect  of  weight ratio of phenol  formaldehyde and their interaction were not significant. The bond.inf strength of plywood  glued .with phenol  formaldehyde at 1111  compositio1u were conformed   with German standard for exterior ply- wood. The_ rwlati_onship between filler proportion and plywood  bonding strength could be exprwued by quadratic regreBBion.
PEMUTlHAN KAYU DUN.JING (PARASERIANTHES FALCATARIA (L.) NIELSEN). DENGAN METODA RENDAM DAN LABUR Rulliaty, Sri
Jurnal Penelitian Hasil Hutan Vol 8, No 3 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2173.239 KB) | DOI: 10.20886/jphh.1990.8.3.100-104

Abstract

Tlae effect of chemical concentration and method of bleaching on the wood quality  i8 reported in thia paper. The mmpla   material co,..;.tetl of 40 piet:u jeur4/ing wood (Partueriantha  (alcataria (L.) Nisllen.) meauri"I J cm by 2 cm by 30 cm rapectiwly~ AU 1amplu  UJmt   divided  into  aeuen group& The /int   three grou,,.  were 1oaked in Ozalic acid and Sodium layd,._ib  iolutlone of  l"     SS   and B'A rapecti~ly.  The aecond three ttrou'DI were aleo malled in. Hydrogen perozide and Sodium hydrozide  eolutione of the above .concentration&  The lat  one group roae lmlalaed  with 8<H> Hydro- gen perozide  and  10~  Sodium  hydrozide  iolutione.   Variable rapona    oMrwd    were brilhtnea,  chemical compound penetration,  occurrence of fuzzy   grain and compreaion parallel to the grain.                                         •The raulb   ,..,led. that .ioalrlng  of jeur4Ji1111 wood in Hydrogen perozide and Sodium hydrozide  at 6~  concentra• tion  ahowed the bat   brWhtnea, a  well a  bruahi1111 with  the mme chemical compound at 30CJ, and 1 ~   concentration retpeetively.  The  taJer018 •peMtration  of  tlaae  chemieal compounda into  wood aubdrwte roere J  mm. M•anwhik; the eoaking method in O:callc acid and Sodium hydrozide  decreaeedthe compreesionparallel to the grain aignificantly. p;,,,...thermore the chemical compou~ """d for  bleaching the jeu.,,,ii11/l wood did not affect (uny    grain defect.
IDENTIFIKASI PERMASALAl{AN YANG DIHADAPI DEWASA INI DALAM PEMANENAN RUTAN DI LUAR JAWA Tinambunan, Djaban
Jurnal Penelitian Hasil Hutan Vol 8, No 3 (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.1990.8.3.88 - 94

Abstract

 An  observation on variousproblems faced by lolflnf   companies In practicing timber harunti"6 in their areas was conducted in seven conceaionaires scattered from Sumatra to Irian Jaya in 1989.It  ia  found that loaf"I   companies are (acing many problems in almost all aspects of timber ha"1estingoperations such as In general iuue, planning. roading, utraction, training, and reaearchand development. The m~n source of the problem ia the condition where loggingcompanies do not adapt their technologies to the current technological develop- ment and ifeld eor ?ffinna. For er,,;,._ lnfllt time all loggingcompanies have sticked to the traditional tractor'loggi111 system without considering its suitability to specific local conditions. Alao almost all regulationsabout timber harvestingare.still the same as thpse in early 1910'•  and there ia no competent'institution  available.,or analyzing various aspects of timber harvating. All of thae  ~ause the use ofatatic technology in the middle of many draaticchanges, technology development and working conditionAs the result, it ia noticed in the field that the efficiency of loggingoperations ia low. the rate of loaillf  waste ia high,and the environmental diaturbance ia alarming. All of thaee problems need aerious attention both from the govemment and private secto1'8.
PENGGUNAAN TANAH LIAT SEBAGAI BARAN KONSTRUKSI LAPISAN AUS JALAN HUTAN Using clay. soil for wearing course material of forest roads Sutopo, S
Jurnal Penelitian Hasil Hutan Vol 8, No 3 (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.1990.8.3.109 - 114.

Abstract

Oil type  of forest areaB in Indonesia is dominated by  c"lay.  This soil is poor. when used a  forest road construction material but its engineering properties can be improved by certain treatments.C"lay soils can be used aB binding materialaof wearing course construction. An investigation wa. carried out, using the mi:cture of soil, lime and crushed rock with the following results: 1. Lime haB a highly significant influence on the binding strength of materaUfor wearing course of forest road& It proportion is 1~  on weight bas~.                                    2. According to laboratory test, the use of cruthed rock has a highly significant influence on wearingcource  tre"lth.Percentagesof separated materials at 0%. 2590. 50% and 75% cmshed rock mixture are 1,0%. 2,5%, 26,B'foand 66.5%reapectively.3. An effective crushed rock percentase for clay 11oil wearingcourse construction is 25%. Among the material mixtUre(soU, lime and cmshed rock) have significant interaction.       
PENGARUH JARAK SARAD DAN VOLUME KAYU YANG DISARAD TERHADAP PRODUKTIVITAS TRAKTOR PENYARADAN Dulsalam, Dulsalam; Sukanda, Sukanda
Jurnal Penelitian Hasil Hutan Vol 8, No 3 (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.1990.8.3.83 - 87

Abstract

An inveatigation on the effect of alcidding diatance and •kidded log volume on the productivity of kidding tractor um carrkd  out at a forest company in Jambi in 1986. Caterpillar D1 G trac~ors were elected randomly and their working time and skidded log volume were obaervedthrough work time atudy. The purpoH  of thia invatigation ia to find  out the effect of kidding  diatance and skidded log volume on the productivity   of kidding  tractors. The invati1Qtion  coma  to the fotlOwing concluaioru.                              1.  The owrace of skidding diatance wa  8.24 hm with  standard error of  0.2tJ66 hm while  the average of idded log volume IDOi  9.08 m8 with. 0.3173 m3 atandard error.                                                                     J.  The a~        productivity of skidding  tractor  waa  92.09 m8 hm/hour  with  atandard error of  6.8406 m8 hm/hour.3. The Niationahip  between tractor productivity   (Y)  and •kidding  diatance (X 1) and kidded  log volur.ne (X2) can beupraaed   in the li~       r.nultipie Ngreuion: Y   -   48.1670 + 16.0704X1   + 9.6176 Xa with R2 •  0.71604. The effects of  kidding  diatanca  and •kidded  log . voluma  on the productivity of •kidding  tracton  are aigniffcant.TM  tractor productivity   increaaedproportionaUy  when the •kidding. diatance and •kidded• log volume increaed. It  therefore recommended to make the •kidded loga as long as poaible  GI  far  GI   the tractor can handle.

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