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Articles 6 Documents
Search results for , issue "Vol 9, No 1 (1991): Jurnal Penelitian Hasil Hutan" : 6 Documents clear
ANATOMI DAN IDENTIFIKASI 21 JENIS KAYU KURANG DIKENAL Mandang, Y I
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (24693.398 KB) | DOI: 10.20886/jphh.1991.9.1.5-23

Abstract

Grau and anatomical features of 21 leaer known wood species (10 families) were described and comJH11"814 There are 10 out of 21 species which have deco1Utiveappearances.i.e. Solenospermum javanicum, Luminitaera  littorea. Mutixia trichotoma,  Blumeodendron tokbrai,  Neoscbartechinia kingii, Pimeleodendron amboinicum,  Gymnostoma sumatranum, Wienmania blumei, Dillenia ex.celsaand Erythroxy Ion cuneatum.For identification purpo•• •veral  important features were noted. They  occur at least in one mt1mberof the follow- ing families: 1) veael  solitary  and radialy grouped in Caauarinaceae;.2) ueuel crou section are polygonal in Comaceae and Cunoniaceae; 3) intervet111elpit vestured in Combretaceae and Dipterocarpaceae; 4) Tylosis sclerotic in Euphorbiaceae;5) parenchyma banded or reticulate in Casuarinaceae, Celaateraceae, Cunoniaceae and Euphorbiaceae; 6) fiber storied in Datiscaceae; 7) 'fibers  uaually with  bordered pit at radial face in Erythrox.ylaceaeand Eupho:rbjaceae;8) vaacicentric bw1aflid in Casuarinaceae, Cunoniaceae and Dipterocarpaceae; 9) axial inter..celularcanal in Oomaeeae and Dipterocar- paceae; 1 O) raphide crystal in ray cells of Dilleniaceae;11) Disjunctive end wall in upright ray cells of Euphorbiaceae.Revision of  the formerly known  as Casuarina sumatrana Jungh. et de  Vriese into .Gymnostoma  sumatranum  L. A.S. Johnaon is BUJ)t)rted by anatomical charocters.
PENGAWETAN SEPULUH JENIS KAYU DARI DAERAH LAMPUNG DENGAN METODE DIFUSI Permadi, Pipin; Barly, Barly
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3938.523 KB) | DOI: 10.20886/jphh.1991.9.1.34-37

Abstract

The penetration of wood preservative of ten wood species from Lampung was studied. The observation was conducted after the timber had been preserved by diffusion method. The BFCA 30% and wood samples of 6 cm by 10 cm by 200 cm were used in this experiment. The results showed that wood species has significant effect on penetration, while duration of diffusion storage period has the same effect only on keruing, damar asam, balam and cengal banglai. Eight weeks of storage was better than 4 weeks on those timber, but not for the other species. According to IUFRO classification, pulai kayu tabu and bintangur can be classified as permeable, while the others were classified as moderate.
PENGAWETAN DUA JENIS KAYU IRIAN JAYA MEMAKAI BAHAN PENGAWET KOPPER FORMULA 7 SECARA RENDEMAN DINGIN Abdurrohim, Sasa; Endahwati, R; Husodo, S B
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15979.048 KB) | DOI: 10.20886/jphh.1991.9.1.38-42

Abstract

The penetration of wood preservative of ten wood species from Lampung was studied. The obaervation was conduct- ed afier the timber had  been preserved by diffusion method. The BFCA 30% and wood •mples  of 6 cm by 10 cm by 200 cm were used in this experiment.The  results showed that wood .species  haB  significant effect  on penetration,  whi'le duration of  di/fusion storage period haB  the mme  effect  only on keruing, damar a8Clm,  balam and cengal banglai.Eight weeks of storage was better than 4  weeks on those timber,.  but not for the other species. According to IUFRO clasBifieation,pulai. kayu tabu and bintangur can be clasBifiedas permeable, while the others were classified aB  moderate
MANIPULASl POLA SADAP UNTUK MENINGKATKAN BASIL GETAH POHON AGATIS (AGATHIS SP.) Sumantri, Ishak; Dulsalam, Dulsalam
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (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.1991.9.1.1-4

Abstract

Thia ptJPB preaenta  the  re1ult1 •of  invatifOtion   on tapping  design1 manipulation   to increae   relin• yield  of  A,aihiaap. cawied  out  in  Wono10bo  Sub  Fore1t  Diatrict,  Purworejo  Fore1t  District,   Unit 11 Perum  Perhutani  Central  Java, in 1989. The objective   iB  to  (ind  out  the  tapping  design  that  can increaae retin  yield.  For  thit  purpo•,    the 1lanted and horizontal tappi1111 daigna  were applied. Data   obtained   were  analysed   by  uaing neated  desilnl   with  2 x 6 'x 4 (acto1'1. The retult•are as foUowa :                                                                                                                                                                                                                                                                   I.  An  awrage  reain yie1d of  .Agathia ap. in  Wonoaobo  Sub  Foreat District was 2.4 7 gram/tree/day   with  the ro111e  between O. 71 and 8.29  gram/tree/day.2.  The Average  rain   y1Bld1  of  Alatbia   1p. uting 1lanted and horizontal  tapping  design1 were 2.80 and 2.66 gram/tree/day, re1Pectively.3.  The  average rain   yield•  of  Agathia 1p. in February,  .March, April,  .May and  June  were  1.88,  2.62,  2.62,  2.66 and 2.69 1n1m/tree/day,   rapectively.                                                                                                                               .4.  The  average  rain   yields  of  Agathia  1p. at  the  fir•t,  second,  third  and  fourth   tappings  were. 2.36,  2.46,  2.63  and  2.66 gram/tree/day,   respectively.5.  The  rain  yields among  tapping  months  were different   significantly   while the resin yields either  between  tappfn6  deligna or  amorw  tapping  (requencie1   were  not  Bignificantly  different.   Compered   to  relin  yield  of  horizontal   tappin6  de.Wn. the rain  yield  of 1lanted ta~ping deBign wa• 16% higher.
BAGAN PENGERINGAN DEHUMIDIFIKASI BEBERAPA JENIS KAYU INDONESIA Hidayat, Syarif
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (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.1991.9.1.28 - 33

Abstract

Since it• commercial introduction in the late 1960 deh~midification haa become a  very popular method of dryift6. npeciany  for the •mailer operation drying hardwoods. Dehumidification haa also beenpractiaed in tome lndonaian  mw- milla. However, the  Information concerning the  drying achedule of lndoneaian woods were .till  limited. Thia report'Yi dacribe   the dehumidification drying  achedule for tome lndonaian   commercial woods, •which  were taken from Riau, Lampu"I  and Central Kalimantun. The method uaed in determining the d,.Ying achedule waa adapted from the method ulied by Teruawa  (1966) and Kadir (1976). The experiment were conducted in two ataga. The !ht   atage wa1 preliminary dryinf  to praume  the dryfnl propatie1, and the •cond  atage waa the dryinl  in dehumidifier to identify the real drying 1cheduk.  The  result of  the experiment indicated that the •21  wood apecie• can be classified into three drying achedule, achedule I for wood which it euat    to dry,achedule II moderate and schedule Ill  for the wood with the moat difficult to dry.
PENETAPAN UKURAN SASARAN SEBAGAI USAHA PENINGKATAN EFISIENSI PROSES PENGGERGA.JIAN DI LIMA KILANG PENGGERGAJIAN Bachman, Osly; Hidayat, Syarlf
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (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.1991.9.1.24 - 27

Abstract

nlri•t a.  Is  ou   of  the factors that determine aawin6 efficiency. Tlls objectiue of thit dudy   wa  to provide the lnfonnatlon  on the •wmlllfnl  e('ficMney in 80me    Indonaian  •wmillt.   The  data for the analy.U  were• from 8 •wmilk In  Central .llUll and 2 •wmllla  In .limbL  Ou   hundred board• from each •wmlll   were randomly tuleen to evaluate the uariition of  the tlaiclenna within and betroeen t~   board•, and to determine the deviation of the board  tlaicleu•  from the ,.,,.,    ,,_  in each •wmlll.'f1ae  tlaicleJllla  between the board•  waa fQund to be more •riable   compared with the tlaicle,..,, within the board&. EllfJJthoulla tlN laf61aat deviation of  the board• found In tlaia atudy  wa• llelow PPKGRI atandard,  ..,,.ation    waa made •lam ro minlmlH tlaiclenaadeviation, and the po•ible  lmprouement and maintenance of the aetwork.

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