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Sushardi
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PENINGKATAN KUALITAS LIST PROFILE DENGAN PERLAKUAN KOMPOSISI BAHAN PEREKAT Sushardi; Yuniarto
Jurnal Wana Tropika Vol 1 No 2 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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List profile is a mineral board product that more and more interested people use it. One of its advantage is the cheap cost, quick availability and more resistant against damaging organism attacks. From economy’s point list profile with adhesive plaster and filler rofing more expensive, so it required another type of adhesive which is stronger but cheaper cost. This research has the objection to find out the filler type and content of gips with low cost. The design of this research is complete random design continued by Tukey test. The factors were the filler type using “mendong” and rofing, and adhesive contents of 720 grams, 780 grams, and 840 grams to observed the water content, density, modulus of elasticity, modulus of rapture and its adhesive strength. The result indicated an interaction between the filler type and its content both influenced the water content and density. The average of water content, density, modulus of elasticity, modulus of rapture and adhesive strength were 17,6787-20,0729 %, 0,9575 – 1,1489 g/cm3 , 3172,7619 – 4831,6183 kg/cm2 , 25,8452 – 30,8413 kg/cm2 , and 1,9006 – 3,4287 kg/cm2 respectively. Keywords: List profile, mendong, rofing, gips
Perbandingan Struktur Anatomi Jati Unggul Nusantara (JUN) dengan Jati Plus Perhutani (JPP) Sushardi; Gustomo K., L. Surya
Jurnal Wana Tropika Vol 3 No 1 (2013)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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PENGARUH LAMA PEREBUSAN DAN POSISI RADIAL TERHADAP KUALITAS VENIR KAYU KELAPA Sushardi
Jurnal Wana Tropika Vol 4 No 1 (2014)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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DAMPAK INDUSTRI HASIL HUTAN TERHADAP KESEJAHTERAAN MASYARAKAT: Impact of Forest Product Industry to Public Welfare Sushardi
Jurnal Wana Tropika Vol 6 No 2 (2016)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Kawasan hutan yang mempunyai fungsi pokok memproduksi hasil hutan digolongkan dalam hutan produksi. Hutan tanaman industri merupakan hutan tanaman yang dibangun dalam rangka meningkatkan potensi dan kualitas hutan produksi dengan menerapkan silvikultur intensif untuk memenuhi kebutuhan bahan baku industri hasil hutan. Dengan adanya pembangunan HTI maka diharapkan dapat menyelamatkan hutan alam dari kerusakan karena HTI merupakan potensi kekayaan alam yang dapat diperbaharui, dimanfaatkan secara maksimal dan lestari bagi pembangunan nasional secara berkelanjutan untuk kesejahteraan penduduk. Pembangunan dan pengelolaan HTI termasuk di dalamnya industri hasil hutan dalam skala luas dan jangka panjang adalah salah satu mekanisme untuk meningkatkan kesejahteran masyarakat, salah satunya yaitu dengan menyediakan lapangan kerja. Pengelolaan masyarakat dipusatkan pada kemampuan badan usaha untuk menyediakan kesempatan kerja dan kesempatan usaha bagi masyarakat. Kata kunci : Hutan Tanaman Industri, Dampak Industri, Kesejahteraan Masyarakat
SIFAT ANATOMI KAYU BAKAU (Rhizophora mucronata LAMK) Sushardi; Kodi, Hala
Jurnal Wana Tropika Vol 8 No 1 (2018)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Mangrove is one type of mangrove forest plants that has enormous potential and benefits. Almost all parts of mangrove plants can be used; the leaves are for medicine, the skin is for producing tanners and wood for charcoal, building materials and so on. To make more optimal use of mangrove wood, a close study of the properties of the wood is needed. Therefore, knowing the dimensions and value of mangrove fiber derivatives is a very important thing to do. This study aims to determine the dimensions and values of mangrove wood derivatives and their possible uses.The study used a completely randomized factorial design with Tukey's further tests. The factors used are the location of the trunk axial direction (base, middle and tip) and radial direction (near the heart and near the skin). The parameters observed included fiber length, fiber wall thickness, lumen diameter, fiber diameter and fiber dimension derivative values.The results showed that the average value of fiber length was 0.67 mm, fiber wall thickness was 4.25 µ, lumen diameter was 6.71 µ, fiber diameter was 13.83 µ. The average value of fiber dimension derivatives is; runkel number 1.29, muhlsteph number 77.23%, weaving power 10.46, sensitivity coefficient 0.31, and flexibility value 0.48. Based on the value of fiber quality and its derivative value, in general mangrove wood includes the quality of pulp and paper class III, where wood fibers are short to medium size, cell walls and medium lumens. Keywords: Dimensions and values of fiber derivatives, mangrove wood
SIFAT WETABILITAS DAN WARNA KAYU SENGON DAN WARU GUNUNG SEBAGAI BAHAN MEBEL Sushardi
Jurnal Wana Tropika Vol 8 No 2 (2018)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Penggunaan jenis-jenis kayu sebagai bahan baku industri harus disesuaikan dengan sifat dasar kayu agar dapat menghasilkan produk hasil hutan dengan kualitas yang baik. Penelitian faktorfaktor tersebut perlu dilaksanakan dengan ketat untuk meningkatkan pengetahuan sifat-sifat bahan baku kayu agar sesuai dengan tujuan penggunaannya. Penelitian ini bertujuan mengetahui sifat wetabilitas dan warna kayu sengon dan waru gunung pada arah radial sebagai penciri khas jenis kayu, dan mengetahui kemungkinan penggunaannya.Penelitian ini menggunakan rancangan acak lengkap (Completely Randomized Design) dengan uji lanjut Tukey. Faktor yang digunakan adalah jenis kayu (kayu sengon dan waru gunung) dan bagian arah radial kayu (kayu dekat hati dan dekat kulit). Parameter yang diteliti adalah berat jenis, wetabilitas dan warna kayu. Hasil penelitian menunjukkan bahwa warna kayu sengon dekat kulit lebih terang yaitu sebesar 67,12, sedangkan waru gunung dekat hati lebih gelap sebesar 39,32. Kayu sengon mempunyai berat jenis, wetabilitas dan warna kayu rata-rata sebesar 0,24, 4277,32 mm dan 61,92, sedangkan waru gunung 0,49, 2524,01 mm dan 49,31. Kayu dengan berat jenis rendah (kayu sengon) mempunyai ciri khusus wetabilitas sedang (mudah dibasahi cairan) dengan warna kayu terang, sedangkan kayu berat jenis tinggi mempunyai ciri khusus wetabilitas rendah dengan warna kayu gelap. Bagian kayu dekat kulit mempunyai berat jenis, wetabilitas dan warna kayu rata-rata sebesar 0,35, 3690,68 mm, dan 63,21, sedangkan waru gunung 0,38, 3110,65 mm dan 48,02. Kayu sengon dan waru gunung dapat digunakan untuk produk mebel, karena termasuk kedalam berat jenis ringan sampai sedang, dengan wetabilitas dan warna kayu terang sampai sedang. Kata Kunci : Wetabilitas, warna kayu, sengon, waru gunung
PERANAN KOMPONEN EKSTRAKTIF KAYU DALAM MENGURANGI PEMANASAN GLOBAL Sushardi
Jurnal Wana Tropika Vol 9 No 2 (2019)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Global warming is happened cause by prolonged drought, forest fires, floods and landslides. High carbon emissions from industries, burning of forests and peatlands exacerbate these conditions. Excessive gas emission has the potential to be a barrier to the reflection of infrared rays from the earth into the atmosphere and it has a warming effect, which is then called the greenhouse effect. Wood is one of the plants that have extractive components that can absorb carbon emissions most effectively. The study aims to determine the extractive components of sengon and johar wood that can capture formaldehyde emissions. The research design used a one-factor Complete Randomized Design, namely the type of sengon wood and johar wood with analyzed using the SPSS program. The parameters observed were specific gravity, extractive content and formaldehyde emission. The results showed that sengon and johar wood types had different specific gravity, extractive content and formaldehyde emission. The average density of sengon wood is 0,236, extractive which is soluble in cold water 3,653%, in hot water 4,158%, soluble alcohol bensen 3,660%, and formaldehyde emission 0,927 ppm. The average density of johar wood is 0.650, extractive which is soluble in cold water 5.020%, in hot water 8.740%, soluble alcohol bensen 10.310% and formaldehyde emission 0.473 ppm. Extractive components that play an important role in absorbing carbon emissions are extractive components that dissolve in cold water and hot water, where the extractive component contains polar organic compounds, such as sugar, dyes, tannin, gum, protein and starch. Keywords: Extractive, global warming, formaldehyde emissions
KARAKTERISTIK MINYAK SEREH WANGI DARI DAERAH ISTIMEWA YOGYAKARTA Woesono, Hastanto Bowo; Sushardi; Purwanto, Muhammad Amir
Jurnal Wana Tropika Vol 11 No 2 (2021): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v11i2.182

Abstract

The market needs will be fragrant citronella oil increases, but it is not worth the production and quality of fragrant Lemongrass oil is produced. The purpose of this study, that is, to figure out the best combination of sources of raw materials and factors of the size of the craftmanship the leaves against the yield and quality of fragrant citronella oil. Research design used was Random Complete Factorial Design, using two combination treatment that is the source of the raw material and the size of the craftmanship leaves. The observed parameters include: color, yield, citronellal, citronellol and geraniol. The results of this study indicate that the color of the resulting eligible SNI 06-3953-1995 that is pale yellow to yellow-brown. Combination treatment of the source of the raw material and the size of the leaf is very different from real craftmanship against yield oil of citronella scented with the highest average on the source of raw material for the village of Wedomartani, craftmanship and size of 0.93% leaves 10 cm that is 0.94%. Chemical content of citronellal shows that the source of the raw material and the size of the different leaf craftmanship not real. Chemical content of citronellol and of the raw materials sources that geraniol very different real, whereas the size of different leaf craftmanship not real. The average content of chemical sitronellol and geraniol at the source of the raw materials of the highest village of Kebonharjo, the content of citronellol 13.11% and geraniol content 34.84%. Key words: raw material sources, treatment, quality of citronella oils
DISTRIBUTION OF CERTIFIED WOOD TEAK WOOD MACHINING PROPERTIES AS EXPORT FURNITURE MATERIALS: Sebaran Sifat Pemesinan Kayu Jati Hutan Rakyat Bersertifikasi Sebagai Bahan Mebel Ekspor Sushardi; T.A. Prayitno; Y. Suranto; Ganis Lukmandaru
HUTAN TROPIKA Vol 16 No 1 (2021): Volume 16 Nomor 1 Tahun 2021
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v16i1.2963

Abstract

Pengujian sifat pemesinan kayu jati hutan rakyat menjadi sangat penting untukmendapatkan informasi penggunaannya sebagai bahan baku mebel kualitas ekspor.Penelitian bertujuan mengetahui pengaruh perbedaan lokasi dan umur tanaman terhadapsifat pemesinan kayu jati hutan rakyat. Penelitian dilaksanakan di hutan rakyat jatitersertifikasi pada umur 6, 8 dan 10 tahun. Pengujian sifat pemesinan dilakukan menurutmetode ASTM D1666-87. Penelitian menggunakan analisis varian program SPSS 20.0dengan uji lanjut Tukey. Hasil penelitian menunjukan jati hutan rakyat di lokasi Nglipar,Playen dan Dlingo dan umur pohon 6, 8 dan 10 tahun menghasilkan sifat pemesinan yangberbeda sangat nyata, dengan kualitas kelas mutu I dan sifat pemesinan sangat baik,kecuali di lokasi Dlingo dan umur 6 tahun dengan kelas mutu II dan sifat pemesinan baik.Sifat pemesinan jati hutan rakyat mempunyai nilai bebas cacat penyerutan 79.86 – 87.97%, pembentukan 80.96 - 90.06 %, pemboran 80.34 -89.85 % dan pengampelasan 80.19-94.47 %.Kata kunci : Hutan jati rakyat, pemesinan, penyerutan, pembentukan, pemboran,pengampelasan
PERBAIKAN SIFAT LIST PROFILE LIMBAH SERAT KELAPA DENGAN PERLAKUAN JENIS DAN JUMLAH PEREKAT Sushardi; Siman Suwadji, Hastanto BW dan Didik Surya Hadi
PROSEDING 2022: PROSIDING UNIVERSITAS ISLAM BATIK SURAKARTA 2022
Publisher : PROSIDING

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Abstract

. List profile is a mineral board product that is increasingly in demand by the wider community. One of the advantages is that the list profile is cheap, quick to get it, resistant to attacks by wood-destroying organisms and can be obtained in the form of attractive ornaments. In terms of economy, the list profile with cast adhesives is more expensive, so other types of adhesives that have the same strength as low prices are needed. This study aims to determine the type and adhesive content of casts, white cement and their mixture against the properties of the list profile. The study used a complete randomized design with a further tukey trial. The factors used are the type of adhesive (cast, white cement and a mixture of the cast with white cement) and the amount of adhesive (600 g, 690 g and 780 g). The observed parameters are moisture content, density, fractured modulus and internal adhesiontre. The results showed that the type and amount of adhesive had no real effect on the parameters of the fracture modulus and the firmness of the internal adhesive list profile, while the type of adhesive had a real effect on the moisture content and the amount of adhesive had a noticeable effect on the density. Moisture content value 14.86 - 20.57 %, density 0.61- 0.94 g/cm3, fractured modulus 18.06 - 37.39 kg/cm2 and internal adhesion constancy 6.07- 12.51 kg/cm2. Coconut fiber waste can be used as a filler for list profiles, the results of the list profile research all meet the Indonesian National Standards and Japanese Standar except water content. Keywords: List profile, cast, white cement, adhesive content
Co-Authors Bowo Woesono, Hastanto Damayanty, Dhewy Ganis Lukmandaru Gustomo K., L. Surya Hadi, Didik Surya Kodi, Hala Pamungkas, Muhammad Bagas Purwanto, Muhammad Amir Siman Suwadji, Hastanto BW dan Didik Surya Hadi Suwadji, Siman T.A. Prayitno Wisnu Wardana, Wisnu Woesono, Hastanto Bowo Y. Suranto Yuniarto