Garuda - Garba Rujukan Digital

ANATOMI BATANG AREN (ARENGA PINNATA MERR.) Y I Mandang; Nenny S Sudarna
Jurnal Penelitian Hasil Hutan Vol 6, No 5 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The anatomical features of aren stem in relation to its utilization were studied by taking samples from Bogor Re- gency, West Java. The mature stem has 8 to 10 m of clear bole with 30 to 43 cm in diameter. The hard pheripheral region of the stem is only 0.5 to 5.2 cm in thickness or 4 to 20 percent of the .stem volume.The pheripheral region of the stem consists largerly of fibrouascular bundles while the central portion consists mainly bf parenchyma tissues. The frequency of vascular bundles at pheripheral region may reach 139 bundle/sq. cm then gradually decreased to 10 bundles/sq. cm at the center.The fiber dimension vary along and across the stem: length 1618 to 2712 microns, diameter.28 to 52 microns, wallthickness 5 to 24 microns. The Runhell ratio varies from 0. 56 to 13.33.

PEMILAHAN JENIS KAYU KAPUR SINTOK (DRYOBALANOPS OOCARPA V. SI.) DARI JENIS-JENIS KAYU KAPUR LAINNYA Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 4, No 2 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Kapur sintok (Dryobalanops oocarpa V. SI.) is the lightest and also the lowest in durability among the nine wood species of kapur. It is there fore necessary to separate this wood species from the other members, but it is difficult to separate based on anatomical characters. A chemical spot test proved to be simple and applicable. Kapur sintok responded negatively to the aplication of 5 percent of ferric ammonium sulphate while the other eight species responded positively.

ANATOMI TUJUH JENIS KAYU DARI SULAWESI TENGAH. (Anatomy of seven Wood Species from Central Sulawesi) Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 11, No 6 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Wood anatomy of three broad-leaved tree species and four coniferous tree species from Central Sulawesi were observed and described for identification purposes. Fiber dimensions were also measured for evaluation of their quality for pulp making.The three broad-leaved woodspecies (Pouteria firma, Castanopsis javanica and Tristania maingayi) are different in many aspects of wood anatomy so that they are easy to identify. The four coniferous wood species (Agathis philippinensis, Podocarpus imbricatus, Phylocladus hypophylus and Dacrydium beccarii) are similar in many aspects of wood anatomy so that they are difficult to distinguish from each other. More material is needed for furher observation.No single species among the three broad-leaved wood species contain fibers with good quality. All of the four coniferous wood species contain fibers which are moderately good for pulp.

ANATOMI KAYU GAHARU (Aquilaria malaccensis Lamk.) DAN BEBERAPA JENIS SEKERABAT Y I Mandang; Bambang Wiyono
Jurnal Penelitian Hasil Hutan Vol 20, No 2 (2002): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Anatomical characteristics of five "gaharu " wood species, Aquilaria malaccensis. Aetoxyl sympetalum. Gonystylus bancanus, Gonystylus macrophyllus, and Gyrinops versteeghii were described and compared, to find out how to identify and differentiate gaharu wood by their taxa. The knowledge of the difference between Aquilaria malaccensis, which has been listed in Appendix II CITES. from other gaharu wood that have not been listed, would be advantages in supporting the conservation of A. malaccensis as well as in promoting the utilization of the other gaharu wood species.The result of study indicated that all gaharu wood examined have several same features: 1) fibers with distinctly bordered pit at radial face and tend to be arranged in two series: 2) intervessel pit small, .4-7 microns: 3) rays of commonly uniseriate. Both Aquilaria malaccensis and Gyrinops versteeghii have included phloem, while the other three gaharu wood species do not contain included phloem. Aquilaria malaccensis that has been listed in Appendix II CITES could be differentiated from Gyrinops versteeghii based on vessel characteristics. aquilaria malaccensis has medium vessel diameter, 100-200 microns, frequency less than 10 vessels per sq. mm. and radial multiples of 2-4 cells. Gyrinops versteeghii has moderately small vessel diameter, less than 100 microns, frequency more than 10 vessels per sq. mm, and radial multiples of 2 -6 cells.Aetoxylon sympetalum and Gonystylus spp. are together characterized by the presence of aliform and confluent parenchyma and the occurrence of prismatic and styloid crystals in ray tissue. The presence of very thick walled fibers and rays of 1-2 to 3 seriate wide, could be used to differentiate Actoxylon sympetalum from Gonystylus spp. The latter have fibers of medium thickness and rays of commonly uniseriate.

ANATOMI SEMBILAN JENIS KAYU KURANG DIKENAL DARI SUKU MELIACEAE (Wood anatomy of nine lesser known species of meliaceae family) Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 11, No 3 (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.1993.11.3.92-100

Gross and anatomical features of nine lesser known species of the Meliaceae family were observed and described for identification purposes. Fiber dimension were also measured for evaluation of their quality.Five out of nine species observed have decorative appearance, they are: Azadirachta indica, Dysoxylum acutangulum, Dysoxylum caulostachyum, Toona celebica and Toona sinensis. These wood species are therefore recommended for furniture or panelFor identification purposes, several important features, were noted : a) vessels ring poreus in Melia dubia, Toona celebica and Toona sinensis , b) fiber septase in Agalia eusideroxylon, Amoora rubiginosa, Dysoxyluni. acutangulum and Dysoxylum caulostachyum; c).roy homocelular in Aglaia eusideroxylon and Azadirachta indica.Seven species contain fiber with medium qualily for pulp making purposes. Two species contain fiber wilh low quality. No single species contain fiber with high quality.

ANATOMI DELAPAN JENIS KAYU KURANG DIKENAL DARI SUKU FLACOURTIACEAE SAMPAI JUGLANDACEAE (Wood anatomy of eight lesser known wood species of Flacouriiaceae to Juglandaceae) Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 14, No 1 (1996): 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.1996.14.1.31- 45

Gross and anatomical features of eight lesser known wood species belongs to 5 families from Flacourtiaceae to Juglandaceae were observed and described for identification purposes. Fiber dimension were also measured for evaluation of their suitability for pulp. Septate fibers, vessels in radial multiples. some ray longitudinallyfused are the main characters of Homalium and Trichadenia (Flacourtiaceae). Bucklandia and Distylium (Hamamelidaceae) are characterized by small and polygonal vessel, scalariform perforation plate, and disjunctive end wall at upright ray cells. Urandra and Platea (Icacinaceae) are characterized by two type of ray width, fibers with distinctly bordered pit, scalariform perforation plate.and yellowish wood colour. Four species contain fibers with medium quality for pulp (Engelhardtia spicata, Bucklandia triscuspis, Platea latifolia, and Trichadenia philippinensis). The rest four species contain fibers with poor quality. Trichadenia philippinensis is the only one among eight wood species examined which has decorative appearance : moderatelyfine texture, bright yellow in colour and considerable high density. It is thereforepossible to be used as "ramin" substitute.Key words: wood anatomy, identification, Flacourticeae, Juglandaceae.

ANATOMI DAN KUALITAS SERAT KAYU Sissi Artistien; Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 20, No 3 (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.2002.20.3.243-247

Since 1998. Indonesia has been importing wood items in shapes and species from other countries. This situation should not happen if we were able to use local wood species optimally. Wood anatomy of Hibiscus macrophyllus and Artocarpus horridus have been described for identification purposes and evaluation of the appropriate uses.Several particular important features for identification have been observed, as follows : (a) axialparenchyma diffuse in aggregates in Hibiscus macrophyllus. and axial parenchyma aliform in Artocarpus horridus, (b) Ray and fibers storied in Hibiscus macrophyllus and helical thickenings in ground tissue fibers in Artocarpus horridus. (c) mineral inclusions present in Hibiscus macrophyllus in the form of prismatic crystals and druses.The effect of height (upper. middle, and bottom trunks) and distance from the pith (core of the trunk) was significant on fiber dimensions of Hibiscus macrophyllus and Artocarpus horridus. However, such interaction did not bring about significant effect on the fiber wall thickness. About fiber length, it decreased with height levels from the bottom toward the top portion of trunk. Meanwhile, the fiber length increased from the pith toward the portion adjacent to the bark.The relationships between distance from the pith (X) and fiber length (Y) of Hibiscus macrophyllus can be described in three regression equations, as follows: Y = 749 + 1896X + 998X2, R1= 0.4505 (top portion), Y = 664 + 2419X - 1410X2, R2 0.4729 (middle portion), and Y= 1431 + 430X 270X - R1 - 0.0249 (bottom portion). likewise, the corresponding three regression equations for Artocarpus horridus are Y 1177 + 1537X - 927X2 R2- 0.2538 (top portion), Y - 1037 + 1207X - 314X2,R2 0.5519 (middle portion), and Y = 1480 + 969X 674X2, R2= 0.0625 (bottom portion).The fibers of Hibiscus macrophyllus and Artocarpus horridus have a medium quality. These species are therefore suggested for pulp and paper. Hibiscus macrophyllus is suggested too for light construction and mebel.

PENCARIAN PENGGANTI KAYU JELUTUNG (Dyera spp.) UNTUK BAHAN BAKU BATANG PENSIL Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 14, No 6 (1996): 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.1996.14.6.211-230

The importance of suitable wood for pencil slat is primarily for school children under eight years old who still not have sufficient skill in taking care themselves from the danger of using sharp tools. Jelutung wood has been the main source of pencil slat in Indonesia for about 20 years. It can easily be peeled with pencil sharpener specially designed for children usage. However, the supply of jelutung wood is no longer sufficent to meet the rising demand of pencil slat. It is therefore necessary to search for alternative.Experiment with pulai (Alstonia spp) which has nearly the same physical properties with jelutung showed lower pencil quality. Pencils made of pulai are generally more difficult to peel with pencil sharpener. The main cause lies in the anatomical structure of wood. Parenchyma distribution patterm in pulai are tangentially banded, with frequency ranges from 1 - 4 bands per mm radially. Parenchyma distribution pattern in jelutung are scalariform or diffuse in agregate, forming short tangential lines between the rays, with frequency ranges from 6 - 9 lines per mm radially.Bayur (Pterospermum spp) is known to has parenchyma distribution pattern similar to jelutung 's. Experiment with P.celebicum, P.elongatum, P.javanicum and P.diversifolium with sample specific gravity up to 0.50 showed easy peelability. Morever the colour of wood is pink to red brown so it does not need staining with colour substance as usually being done for jelutung and pulai. It is therefore recommeded to use bayur as jelutung substitute in pencil manufacturing. However, to guarantee the continuity of supply, bayur is need to be planted from now on. For bayur is suitable, not only for pencil slat but also for many other purposes.Key words : Pterospermum. wood anatomy, pencil slat

ANATOMI DAN IDENTIFIKASI 21 JENIS KAYU KURANG DIKENAL Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

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.

ANATOMI TUJUH JENIS KAYU DARI MALUKU UTARA (Anatomy of Seven Wood Species from North Maluku) Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 11, No 7 (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.1993.11.7.286-293

Gross and anatomical fentures of seven wood species from North Maluku were observed and described for identification purposes. Fibre dimension were also measured and evaluated for their suitability for pulp and paper.The colour of wood ranges from white to brown, mostly plain without figure. Only one species has decorative figure on its surface, that is Dracontomelon sp. So it is recommended for fancy veneer of plywood or for furniture.The main anatomical features of each wood species are as folows : a) vessels are exlusively solitary and aranged in radial groups in Calophyllum inophyllum; a few vesels are radially multiple up to seven cells in Heritiera sp.; (b scalariform perforation plates present mainly in Elmerillia sp.and rarely in Horsfieldia sylvestris; c) parenchymma bands are present in Calophyllum inophyllum, Horsfieldia sylvestris and Elmerillia sp. : d) rays uniseriate in Calophyllum inophyllum; e).fiber septate in Dracontomelon sp.; f) axical intercelular canals are present in Hopea sp. and Shorea koordersii; g) oil cells in Elmerillia sp. and taniniferous tube in Horsfieldia sylvestris.Five species contain fibres with medium quality (Horsfieldia sylvestris, Dracontomelon sp., Heritiera sp., Shorea koordersii and Elmerillia sp.). other species contain fibres with poor quality.

Title

Found 38 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 38 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 38 Documents
Search