cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota medan,
Sumatera utara
INDONESIA
Peronema Forestry Science Journal
Published by Universitas Sumatera Utara
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 304 Documents
 9   10   11   12   13 
EKSPLORASI TUMBUHAN OBAT PADA TAMAN NASIONAL GUNUNG LEUSER, RESORT SEI BETUNG, SUMATERA UTARA Khairul Ambri; Yunus Afifuddin; Aswita Hafni
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1636.729 KB)

Abstract

Medicinal plants have a very important role for world health that need to be done of research to analyze the diversity of medicinal plants. Medicinal plants exploratory research had been done in the Gunung Leuser National Park, Sei Betung Resort from Juny to Agustus 2014. Medicinal plant species are known to be recorded and identified. The results of the identification of medicinal plants has been done in Gunung Leuser National Park, Sei Betung Resort  found as many as 27 types of medicinal plants.The dominant species is Melastoma malabathricum. The diversity of medicinal plants in the  Gunung Leuser National Park, Sei Betung Resort Hutan classified as moderate. Keywords: Medical plants, Gunung Leuser National Park and Diversity of plants
EKSPLORASI TUMBUHAN BERACUN PADA TAMAN NASIONAL GUNUNG LEUSER RESORT SEI BETUNG , SUMATERA UTARA Yosua Simanullang; Yunus Afifuddin; Aswita Hafni Lubis
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1024.692 KB)

Abstract

Indonesia is one nation that has a very extensive tropical forests. Types of diverse plant are largely not been identified promising a great opportunity as a source of useful chemical compounds. Biopesticides are one of the products made from poisonous plants that can be an alternative to the use of chemical pesticides. Biopesticide producing plant species very much and making it relatively easy. By utilizing a poisonous plant as biopesticides, the use of synthetic pesticides can be reduced. This study is expected to be the basis of research methods in the development of poisonous plants in Indonesia. This poisonous plant exploration research aims to identify and analyze the types of chemical compounds of poisonous plants in Gunung Leuser National Park Resort Sei Betung, North Sumatra. The method used is purposive sampling plots with spacious circular plot of 0.05 acres.This research had three phases. The first was aspect local knowledge with survey local knowledge. The second was aspect biodiversity with analysis of vegetation data collection. And the third was aspect phytochemical with detect the contain of secondary metabolit. The kinds of Poisonous plant found in the Gunung Leuser National Park Resort Sei Betung were Hibiscus heterophyllus, Crhysanemum sp., Macaranga denticulata, Macaranga hypoleuca, Pteruspermum javanicum, Artocarpus dadah, Macaranga gigantea, Clidemia hirta. The result of this research showed that all of kinds of aromatic plants contained secondary metabolit. Keywords: Eksploration, Poisonous plant, Phytochemical, Biopesticide.
KUALITAS PAPAN PARTIKEL DARI CAMPURAN AMPAS TEBU DAN PARTIKEL MAHONI DENGAN BERBAGAI VARIASI KADAR PEREKAT PHENOL FORMALDEHIDA Ivan Mikael; Rudi Hartono; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (543.523 KB)

Abstract

The purpose of this study was to evaluate the effect of variations in the composition of bagasse and mahogany’s particle with phenol formaldehyde adhesive variation levels on quality particle board also to determine the best treatment. The dimension of sample test was 25x25x1 cm with a density target of 0.7 g/cm3. The composition between bagasse and mahogany’s particle were 60:40, 70:30, and 80:20. While for the PF adhesive level were 10%, 12.5%, and 15%. The results showed that  density, moisture content, water absorption for 2 hours and 24hours, thickness swelling for 2 hours and 24 hours, MOE, MOR, and IB were 0.57-0.64 g/cm3, 8.40-12.64%, 29.44-91.41% and 55.50-123.28%, 5.68-18.33% and10.26-32.34%, 3893-9475 kg/cm2, 51.88-106.23 kg/cm2, and 0.49-0.71 kg/cm2. Statistical analysis in this research used factorial randomized completed design and the results were compared with JIS A 5908-2003 standard. The result showed that some of the test on particle board not fulfilled the standard, such as internal bond and MOE. However, all of density and moisture content had fulfilled the standard. Thickness swelling test on particle board composition of 80:20 and adhesive content of 15% had fulfilled standard. MOR test on particle board composition of 80:20 and adhesive content of 10% as well as composition of 60:40 and adhesive content of 12,5% had fulfilled standard. The best result of treatment from this research was a partcle board made from composition of 80:20 and 10% levels of PF adhesive. Keywords:particleboard, bagasse, mahogany, adhesive content, phenolformaldehyde
KUALITAS PAPAN PARTIKEL DARI CAMPURAN SABUT KELAPA DAN PARTIKEL MAHONI DENGAN BERBAGAI VARIASI KADAR PEREKAT PHENOL FORMALDEHIDA Heber Fransiskus; Rudi Hartono; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (617.657 KB)

Abstract

Coco fiber and mahogany can be used as raw material for the manufacture of particle board. Quality of particle board was affected by several things. One of them was affected by particle’s composition and adhesive levels. The aim of this research was to evalated the affect of particle’s composition and adhesive levels, and also to find the best treatment. The dimension of sample test was 25x25x1 cm with a density target of 0.7 g/cm3. The composition between coco fiber and mahogany were 60:40, 70:30 and 80:20. The adhesive used were phenol formaldehyde with composition of 10%, 12.5% and 15%. Testing the quality of particle board refers to the standard JIS A 5908-2003. The results showed that some of the test on particle board not fulfiled the standards of JIS A 5908-2003, such asMOE and MOR. However, all of density test on particle board had fulfilled the standard. Moisture content test on particle board compositionof 80:20andadhesive content of 12.5% had fulfilled the standard. Thickness swelling test on particle board compositionof 60:40and adhesive content of 15% had fulfilled the standard. And also internal bond test on particle board compositionof 60:40 and 70:30 with adhesive content of15% had fulfilled the standard. The best treatment of this research were a particle board made from compostion of 60:40 and adhesive content of 15%. Keywords: particle board, coco fiber, mahogany, physical and mechanical properties, phenol formaldehyde
Variasi Lama Perendaman dan Konsentrasi Phenol Formaldehida terhadap Kualitas Papan Lamina dari Batang Kelapa Sawit Syafrina Talenta Lumbangaol; Rudi Hartono; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (703.101 KB)

Abstract

One way to approve laminated board quality of palm oil trunk was soaked the laminated board  with phenol formaldehyda (PF). The purpose of this study was to evaluate the influence soaking time variation and concentration PF than to determine the best treatment in this research. Laminated board was consisted  3 (three) layers with size 45 cm (length) x 7 cm (width) x 3 cm (thick). The variation of these research were soaking time (10 minutes, 2 hours, and 24 hours) and PF concentration (5.10.15. and 20% ). These study used random experimental factorial design and the results were compared with JAS 243:2003 standard. Results showed weight gain value, density, moisture content, water absorption 2 hours and 24 hours, thickness swelling on immersion 2 hours and 24 hours, thickness swelling on immersion 2 hours and 24 hours around, delamination test, modulus of rupture, and modulus of elasticity. Result showed that 3.82-15%, 0.39-0.47 g/cm3, 11.66-14.16%, 36.15-46.38%, and 78.87-98.65%, 2.5-11.58% and 5.13-17.58, 0%, 170.23-250.15 kg/cm2, and 17224-43767 kg/cm2. Moisture content and delamination values have fulfilled  JAS 243:2003 standard. The other hand, MOE and MOR values were not fulfilled yet. The best treatment laminated board made from palm oil trunk was to immerse 10 minutes consentration 15%.
VARIASI KOMPOSISI PEREKAT UREA FORMALDEHIDA DAN BAHAN PENGISI STYROFOAM TERHADAP KUALITAS PAPAN PARTIKEL DARI LIMBAH BATANG KELAPA SAWIT Zainal Abidin Syah Polem; Tito Sucipto; Rudi Hartono
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.591 KB)

Abstract

The waste of oil palm trunks be redundant is alternative basic commodity manufacture particleboards. The purpose of this research was to evaluate the physical and mechanical properties of particle board made from oil palm trunk with variation of urea formaldehyde adhesives and padding Styrofoam particle board. The variation using for the urea formaldehyde adhesives and padding Styrofoam  was  100 : 0 %, 90 :10%, 80 :20%, 70 : 30% and 60 :40 %.  The boards were made with size 25 cm x 25 cm x 1 cm with  density  of 0,70% g/cm3. Particleboards using 10% and press 25 kg/cm2 by the padding  Styrofoam. The temperatures was 1300 and the pressing times was 10 minute. Particleboards was tested for physical and mechanical properties.The results showed that although the density values ​​ranged from 0.565 - 0.627 g/cm ³, the water content of 7.45 - 8.23​​ %, DSA ​​81.66 - 111.84%, PT 9.99 to 16.35% MOE 6419.87 - 8660.58 kg/cm2, MOR 53.638 - 81.167 kg/cm2 and IB 0.85 - 6.11 kg/cm2. Entire physical properties have fulfilled to SNI 03-2105-2006 standards. All the mechanical properties have not fulfilled to the standards except internal bond with SNI 03-2015-2006 100 treatment: 0 % and 90: 10 %. Keywords: oil palm trunks, urea formaldehyde, styrofoam, particle board, physical and mechanical
EKSPLORASI TUMBUHAN OBAT DI KAWASAN GUNUNG SIBUATAN, KECAMATAN MEREK, KABUPATEN KARO, SUMATERA UTARA Eben Ezer Silaban; Yunus Afifuddin; Ridwanti Batubara
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1978.577 KB)

Abstract

The research of medicinal plants has been carried out in the mountain region Sibuatan, district Karo. The research aimed to identified the types of medicinal plants in mountain Sibuatan. Basic research methods in the development of medicinal plants had two stages. The first stage is the aspect of local knowledge with local knowledge survey. The second stage is the aspect of biodiversity with the analysis of vegetation data collection. They are 16 type of medicinal plants in mountain regions Sibuatan : Rubus reflexus, Impatiens balsamina, Nicolaia speciosa, Vitis gracilis, Solanum verbacifolium, Eupatorium odoratum, Nepenthes spectabilis, Nepenthes tobaica, Nepenthes gymnamphora, N.spectabilis x N. gymnamphora, Calamus diepenhorstii, Leersia hexandra, Melastoma candidum, Sida rhombifolia, Curculigo sp, Macodes petola. Keywords: Medicinal Plants, Mountain Regions Sibuatan, species.
Eksplorasi Tumbuhan beracun di Cagar Alam Martelu Purba Yunus Afifuddin; Lamek Marpaung; Yohanes Silitonga
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (959.004 KB)

Abstract

This research about of poisonous plant in the Explorationof Poisonous Plants on Martelu Purba Nature Preserve doing analysis identification, secondary metabolit, and potential development of the aspect local knowledge with survey local knowledge. The second is aspect biodiversity with analysis of vegetation data collection. And the third is aspect phytochemical with detect the contain of secondary metabolit. The exploration of poisonous plant in Cagar Alam Martelu Purba  finded 16 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 Latong andosari (Alstonia scholaris L.R. Br), Birah (Alocasia arifolia Hallier. F), Langge (Homalonema propinqua Ridl),  Hau palu-palu ni ogung (Canarium album Raeusch), Andor hutdali   (Dioscorea sp.), Flacourtia rukam Zoll. & Mortizi, Lang-lang habungan (Coleus scutellariodes (I). Benth), Latong anduri (Litsea sp.), Baringtonia sp, Silambau (Clidemia hirta Bl), Rube (Ficus lowii King), Rube-rube (Ficus sinuata Thunb), Sitorhom (Eugenia sp.), Tomu ring-ring (Saurauia pendula Blume), Dosih (Rubus moluccanus eelkek), and Tabar-tabar (Costus speciosus Sm.). Keywords : Poisonous plant, Martelu Purba Nature Preserved, Phytochemical, Biopesticide
Strategi Pemasaran Pinang (Areca sp.) Studi Kasus Kecamatan Sibolangit, Kabupaten Deli Serdang, Propinsi Sumatera Utara Pebriaman Kanista M; Yunus Afifuddin; Ridwanti Batubara
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (883.031 KB)

Abstract

Areca nut is one of North Sumatra’s potential export commodity which it’s management still did as partial. The purpose of this research is analyzing the income level of areca nut farmers, analyzing the commodity marketing system of areca nut, Identifying factors marketing development of areca nut in Sibolangit sub Deli Serdang regency North Sumatra Province. The election of research’s location did expressly. The decision of respondent did as purposive sampling, but processing factory and business administration which involved did as snowball sampling method with total sample of 38 (thirty eigth) respondents. Data collected through observation and analysis of the problem with interview using  questionnaires to farmers and entrepreneurs nut. Overall both primary and secondary data is tabulated next as needed. Result of this research is cultivation of areca nut did as polycultur with low technology application level will low productivity. In product marketing subsystem, trade chain is too long, that’s why product’s cost is not too efficient and than make double margin, than areca nut’s farmer price is too low, so areca marketing strategy priorities in District Sibolangit is forming farmer groups, cooperative village level, supervision of areca marketing system, human resource development and used of quality seeds. Keywords: management, marketing, areca nut and marketing strategy
ANALISIS KERUGIAN EKONOMIS DAN PEMETAAN SEBARAN SERANGAN RAYAP PADA BANGUNAN SMA DAN SMK KOTA PEKANBARU Frieda Sitepu; Luthfi Hakim; Yunus Afifuddin
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1037.205 KB)

Abstract

Building planning always take into two important aspects related that is the strength and durability. Related to the strength , the structure of the building is planned based on the load to occur and the power structure of the materials used. The tendency of the danger of attacked by termites in buildings including residential function at this point is getting higher. This study intend to get the value of economic losses termite attack, and get the information types and the spread of termites that attack the buildings of Senior High School and Vocational High School in Pekanbaru. The research was conducted on July until August 2014. The method was used is direct observation and interviews. The results mapped with GIS applications. The results showed that 64% of senior school building have small damage and 36% of schools included in the moderate damage. Termite species found are a type of dry wood termites (Cryptotermes cynocephalus) and Termite soil (Microtermes inspiratus) Keywords: Termites, economic losses, school buildings, GIS

Page 11 of 31 | Total Record : 304

 9   10   11   12   13 

Filter by Year

2012 2016


Reset
Filter By Issues
All Issue Vol 5, No 4 (2016): Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal Vol 5, No 1 (2016): Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal Vol 4, No 1 (2015): Peronema Forestry Science Journal Vol 3, No 2 (2014): Peronema Forestry Science Journal Vol 3, No 1 (2014): Peronema Forestry Science Journal Vol 2, No 3 (2013): Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal Vol 1, No 1 (2012): Peronema Forestry Science Journal More Issue