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Peronema Forestry Science Journal
Published by Universitas Sumatera Utara
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 304 Documents
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KUALITAS PAPAN SEMEN DARI SERUTAN LIMBAH INDUSTRI PENSIL DENGAN BERBAGAI KOMPOSISI BAHAN BAKU DAN KONSENTRASI CaCl2 Fatmala Salmah; Luthfi Hakim; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

This research concerning on the use of pencil shavings waste as a raw material in the manufacture of cement board. The purpose of this research was to evaluate the quality of the cement board to the physical properties and mechanical properties of the board with different ratio of raw materials:cement and various concentrations of CaCl2 as a catalyst. The board was made of pencil shavings with various ratio of raw materials (cement : shave ) were : 75:25; 80:20; 85:15 and a catalyst concentration were 3 % and 5 % with a target density of 1,2 kg/cm3. Testing of physical and mechanical properties based on the standard JIS A 5417-1992 of cement particle board . The results of this research indicate that the physical properties of the cement board pencil shavings particle has met the standard of JIS A 5417-1992 . As for testing the mechanical properties do not meet the standards of JIS A 5417-1992 . The best treatment is 85:15 raw material composition at a concentration of 3 % catalyst. Comparison of the composition of raw materials and catalyst concentration does not significantly affect the physical and mechanical properties of the cement board particles pencil shavings . Keywords : cement board , catalysts , particle , pencil shavings , CaCl2
PENGARUH RASIO SEMEN DAN PARTIKEL TERHADAP KUALITAS PAPAN SEMEN DARI LIMBAH PARTIKEL INDUSTRI PENSIL Rizqi Putri Winanti; Luthfi Hakim; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Utilization of pencil shavings waste as raw material cement board is one of the alternatives to reduce timber production. The research objective was to evaluate the physical and mechanical properties of the cement board with a pencil shavings waste catalyst addition of calcium chloride on the variation ratio of materials (cement: particle: water). Cement board in this study is made of pencil shavings waste particles with various compositions of raw materials (cement: particle) 75:25; 80:20; 85:15; 90:10 with the addition of a catalyst and Calcium Chloride (CaCl2) as much as 5%. With a target density of 1.2 kg / cm2. Testing of physical and mechanical properties based on JIS 5417-1992 about cement particle board. Value of  physical and mechanical properties testing of cement particle board not all fulfill with the standards of JIS A 5417-1992. The physical properties of cement particle board that fulfill with JIS A 5417-1992 standard is the density with ratio 75:25, the water content and 2 hours and 24 hours of thickness swelling . the mechanical properties of the cement particle board not fulfill with standard of JIS  A 5417-1992. The best treatment is the cement board with a ratio of 90:10. The ratio of cement composition and particle pencil shavings waste no significant effect on the quality of the cement particle board produced. Keywords: cement board, CaCl2 catalyst, pencil shavings, physical and mechanical properties.
ANALISIS KERUGIAN DAN PEMETAAN SEBARAN SERANGAN RAYAP PADA BANGUNAN SD NEGERI DI BAGIAN BARAT KOTA PEKANBARU Frisco Panahatan S; Yunus Afifuddin; Lutfhi Hakim
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

As one of the common facilities, Elementary Schools are very important and should be maintained in order to remain in good condition. Termites attacked on the building at the moment was a very big deal considering that the higher the intensity of their attacked and expanded so that the value of lost due to termite attacked tend to increase from year to year. This study aimed to get the value of economic losses termite attacked and get a map of the distribution of species of termites in the Elementary School building in the western of Pekanbaru. The research was conducted from July 2014 until August 2014 by using purposive sampling method 15% of the total number of Elementary Schools in the city of Pekanbaru. Data collected by direct observation and field interviews using questionnaires. The data obtained were then mapped using GIS (Geographic Information System). The results obtained showed that minor damage by 60% and were 40% moderate damage. Economic losses termites attacked against the State Elementary School building is Rp334.130.000 for tembesu wood standard and Rp246.367.000 for meranti wood standard. Types of termites that attacked the Elementary School Buildings were Microtermes inspiratus for subterranean termites and Cryptotermes cynocephalus for dry wood termites.   Keywords: Termites, economic losses, school buildings, GIS
Sifat Fisis dan Mekanis Papan Semen dari Limbah Industri Pensil dengan Berbagai Rasio Bahan Baku dan Target Kerapatan Yunida Syafriani L; Luthfi Hakim; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Pemanfaatan limbah industri serutan pensil belum banyak dikembangkan. Tujuan utama dari penelitian ini adalah untuk mengevaluasi kelayakan teknis limbah industri serutan pensil sebagai bahan baku papan semen. Penelitian ini dilakukan untuk: menentukan rasio semen-partikel dan target kerapatan terbaik terhadap sifat fisis dan mekanis papan semen yang dihasilkan; mengevaluasi pengaruh rasio bahan baku dan target kerapatan terhadap kualitas papan semen. Rasio bahan baku yang digunakan adalah 80:20, dan 85:15. Target kerapatan yang ditetapkan adalah 1 g/cm3 dan 1,2 g/cm3. Katalis yang digunakan sebagai akselerator adalah magnesium klorida (MgCl2). Papan ditekan dengan kempa dingin pada 25 kg/cm2 selama 10 menit. Metode penelitian ini menggunakan dua tahap proses pengerasan papan semen. Tahap pertama proses pengerasan papan kering udara selama 4-5 hari dan dilanjutkan dengan pengovenan papan semen selama 24 jam pada suhu 50oC. Hasil penelitian menunjukkan bahwa nilai sifat fisis yang dihasilkan memenuhi standar JIS A 5417-1992. Efek rasio semen-partikel pada kekuatan menunjukkan bahwa rasio 85:15 sangat baik dibandingkan dengan rasio 80:20. Target kerapatan terbaik adalah 1,2 g/cm3. Kata kunci : serutan pensil, papan semen, rasio semen-partikel, target kerapatan.
Pengaruh Pelapisan Akrilik terhadap Kualitas Papan Partikel dari Limbah Batang Kelapa Sawit Merry Cristin Natalia Simaremare; Tito Sucipto; Lutfhi Hakim
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

To reduce the  waste of oil palm trunks can be done by changing oil palm trunks into particle board. One way to improve the quality of particle board is by doing coating treatment of acrylic. This study evaluated the best acrylic level in improving the quality of oil palm trunk particle board with isocyanate as the adhesive. Boards were made with size  25 cm x 25 cm x 1 cm with a target density of 0.7 g/cm3, felts temperature 160º and pressure 25 kg/cm2 for 3 minutes. Physical and mechanical properties were compared with SNI 03-2105-2006. The treatment variations were acrylic levels (0%, 5%, 10%, and 15%) with 3 repetitions. Results showed that the values of the density, moisture content, water absorption, thickness swelling, modulus of rupture, modulus of elasticity and internal bond were respectively 0,46-0,60 g/cm3, 10,52-11,01%, 5,32-55.35%, 2,37-6,40%, 26,45-60,87 kg/cm2, 2619,15-5092,82 kg/cm2 and 2,28-4,61 kg/cm2. All result values of physical properties testing except value of the moisture content achieved the standards of SNI 03-2105-2006. Instead, all result values of mechanical properties testing did not achieve the standards of SNI 03-2105-2006. The results showed that the particle boards with acrylic coating treatment has better quality than the particle boards without the acrylic coating treatment for the entire physical properties testing in addition to moisture content. Best acrylic level for the coating treatment of oil palm trunk particle board is 15%.
Eksplorasi Tumbuhan Beracun Di Cagar Alam Dolok Tinggi Raja Kabupaten Simalungun Sumatera Utara Vivien Christon Manalu; Yunus Afifuddin; Lamek Marpaung
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Research about Exploration of Poisonous Plants at Dolok Tinggi Raja Nature Preserve did analysis identification, secondary metabolit and potential development of the aspect local knowledge with survey local knowledge. The second were aspect biodiversity with analysis of vegetation data collection. And the third were aspect phytochemical with detect the contain of secondary metabolit. The exploration of poisonous plant in Dolok Tinggi Raja Nature Preserve  found 11 kinds of toxic plants. The result of this research shows that five kinds of toxic plants which has a greater chance that cultivated as asource of biopesticide is Hati Lando (Deccana pubescens Roth.), Hawe Bolanda (Colocasia esculenta (L.) Schott.), Langge (Homalonema propinqua Ridl.), Lappisi (Calamus erectus Roxb.), Latong Andosarih (Urtica dioca L.), Latong Anduri (Litsea leefeana), Latong Barat (Urtica cannabina L.), Osang-osang Balua (Caladium lindenii Madison.), Silam-lam Bau (Clidemia hirta Bl.), Tabar-tabar (Costus speciosus Sm.) and Tubung (Litsea albicans (Kurz) Hook.f.).   Keywords          : Poisonous plant, Dolok Tinggi Raja Nature Preserved, Phytochemical, Biopesticide
Valuasi Ekonomi Hutan Tele Di Kabupaten Samosir Dharma Yoga Putra Simbolon; Yunus Afifuddin; Siti Latifah
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Tele forest mostly used by people around the forest, but they have not been informed about important values ​​and meaning of the forest, they generally only know how to take or make use of forest products based on their own knowledge from generation to generation, without knowing the proper way to preserve the forests and existence. Based on that, it needs an evaluation to determine the importance of forests to society, the values ​​contained in it and how the development strategy for forest conservation Tele. To that end, research on the Economic Valuation of Forest Tele Samosir district has done in November to December 2014 This study used interviews and direct measurements in the field to determine the economic value of forests and determine the factors that influence it. Data obtained from respondents are tabulated, then used as an analysis to determine the total economic value of forests and to determine the factors that influence it. The total economic value of Tele forest is Rp 806.357.253.000 / year or Rp 11,962,692 / year / ha. Economic values ​​contained in Tele forest is direct benefits in the form of firewood forests, orchids, andaliman and indirect forest benefits such as the value of household water, irrigation water value, the value of carbon sequestration as well as the option value and existence value.   Keywords                : Tele forest valuation, forest benefits, the economic value of forest
Tingkat Kesukaan Konsumen Terhadap Teh Gaharu (Aquilaria malaccensis Lamk.) Berdasarkan Bentuk dan Ukuran serta Kandungan Antioksidan Jhonny Simatupang; Ridwanti Batubara; Elisa Julianti
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Agarwood (Aquilaria malaccensis Lamk.) are now popular to be exploited by farmers as a healthy drink. This research was done to study the effect of the shape and size of the tea from agarwood leaves on the consumers acceptance and antioxidant content. Agarwood leaves tea made in three forms: whole leave, cutted and fine particle size. Agarwood tea from these three size of shape and size then were evaluated of their hedonic level at 0 day and after 2 months of storaged in room temperatur by 50 panelists. The antioxidant activity was evaluated on methanol extracts from the three kinds ofagarwood leaves tea by using DPPH method after 2 month of storage. The result of the research shows that the froporcle of agarwood leave tea was more liked by panelists followed by the cutted leaves tea and the whole leaves tea had the lowest value of the hedonic score. The same result was found on the agarwood leaves tea that had been storage for 2 months, in the term of aroma, color for aswell as taste. The hedonic score of arom, color and taste of agarwood leaves tea after 2 months of storage till more than 3,00. It showed that the agarwood leaves tea still was accepted by panelists. The result of antioxidant activity evaluation showed that the fine particle size of agarwood leaves tea had the highest antioxidant activity. The value of IC50 of the agarwood leaves tea from the whole, cutted an fine size leaves were 85,89; 150,01; and 73,02 ppm respectively. Keywords: Agarwood leaves, organoleptic, antioxidant activity, tea
NILAI KESUKAAN KONSUMEN TERHADAP TEH DAUN GAHARU (Aquilaria malaccensis Lamk) BERDASARKAN LETAK DAUN PADA BATANG Nora Adriana; Ridwanti Batubara; Elisa Julianti
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Agarwood is a product of non-timber forest product are high value and are exported to foreign countries. Utilization of wood still focused on the use of agarwood tress, sap and skin is more often used as a distinctive aroma produced. Therefore, it is necessary to study on the effect of the aloe plant leaf leaves of that aloes. The purpose of this study is to determine the level of preference for the public to tea agarwood (A. malaccensis Lamk) based on the location of the leaves on the stem. The result showed that the level of public preference for tea agarwood (A. malaccensis Lamk) are on a scale of 3-4 is enough like to like. Consumers prefer tea from the leaves of the aloes are in the middle position on the aloe tree.   Keyword : agarwood leaves, agarwood tea leaves, the level preference.
KETAHANAN PAPAN PARTIKEL TIGA LAPIS TERHADAP SERANGAN RAYAP TANAH Janrahman Simarmata; Apri Heri Iswanto; Irawati Azhar
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The objective of this research was to evaluate the effect of wood species and adhesive type on durability three layers particleboard to subterranean termite attack. The research method using grave yard test on the field. Samples were oven dried before test, furthermore samples were burried for 3 month. After that, samples were washed, cleaned and oven dried.  Furthermore, the measuring of  weight sample to determine of weight loos parameter.The results showed that sengon and mahoni wood combination able to reduce of termite attack level compared with homogenous wood particleboard.  Sengon as surface layer and mahoni as core layer resulted the best durability of board.  The durability of UF adhesive for manufacturing particleboard better than combination UF and MF particleboard. Keywords:  Durability, Subterranean termite, particleboard, UF and MF

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