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PEMBUATAN KARBON AKTIF MONOLIT DARI KAYU KARET MENGGUNAKAN AKTIVATOR KOH DAN HNO3 UNTUK APLIKASI SUPERKAPASITOR Zulkifli '; Erman Taer; Sugianto '
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Activated carbon monolith (ACM) was made from rubber wood for supercapacitor applications by using two activators, namely KOH and HNO3 . Carbonized sample were by N2 gas at a temperature of 600º C and were physically activated by CO2gas at 800º C for 2 hours. KOH solution of 1, 3 and 5M was used as chemical activation solution. ACM electrodes were tested in a two-electrode system, which was stainless steel as a current collector and a 1M H2SO4 solution as an electrolyte solution. Electrochemical characterization results by impedance spectroscopy methods showed an increase in the capacitive properties, followed by a decrease in cells resistance. The measurements obtained the best capacitance of 55.46 F/g. XRD patterns of the samples showed amorphous structure and SEM images showed that the addition of KOH solution resulted in the pore structure of macroporous and mesoporous combination. In conclusion, this current result showed that the activator of KOH and HNO3have improved the performance of the ACM rubber wood electrode.

ANALISIS FISIOLOGI JAMUR LIGNINOLITIK DAN SELULOLITIK ASAL TANAH GAMBUT DESA RIMBO PANJANG KABUPATEN KAMPAR SEBAGAI AGEN BIOKOMPOS Karina Larasati; Rodesia Mustika Roza; Atria Martina
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Cellulolytic and ligninolytic fungi have an important role in degradation of organic materials, especially lignin and cellulose, in a composting process. The success of the fungi in the composting process is strongly influenced by temperature and pH. The purpose of this research was to obtain isolates of the fungi with the best ability to be applied as biocompost agent by analyzing its ability to grow in different temperature and pH. A total of 110 isolates from peatsoil in Rimbo Panjang, Kampar Regency, Riau was inoculated into Potato Dextrose Broth medium with pH of 5 and pH of 7 then incubated for 3 days at room temperature (±27ºC), 40ºC, 50ºC, 60°C, 70ºC and 80ºC. The results obtained 110 isolates which were grown at room temperature (±27ºC) with pH of 5 and pH of 7 and 96 isolates which were grown at 40ºC temperature. A total of 27 isolates which were grown at 50ºC temperature consisted of genus Penicillium, Trichoderma, and Aspergillus.

ANALISIS FISIOLOGI BAKTERI LIGNOSELULOLITIK DAN AKTINOMISETES SELULOLITIK DAN LIGNINOLITIK DARI TANAH GAMBUT DESA RIMBO PANJANG KABUPATEN KAMPAR SEBAGAI AGEN BIOKOMPOS Novia Lestari; Rodesia Mustika Roza; Atria Martina
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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During a composting process, microorganisms such as bacteria, fungi, and actinomycetes have a role in degradation of organic matter. Temperature and pH also influence composting process. This research was aimed to obtain bacterial isolates and actinomycetes with the best ability to be applied as biocompost agent by analyzing the ability of those isolates to grow in different temperature and pH. Isolates of actinomycetes and bacteria were isolated from peatsoils in Rimbo Panjang, Kampar Regency, Riau. Bacterial isolates were inoculated into Nutrient Broth medium and actinomycetes isolates were inoculated into Starch Casein Broth medium. The cultures were incubated at room temperature (±27°C), 40°C, 50°C, 60°C, 70°C and 80°C in pH of 5 and pH of 7. The results showed that 3 isolates of bacteria and 90 actinomycetes isolates were able to grow at room temperature (±27°C) and 40°C in pH of 5 and pH of 7. A total of 28 actinomycetes isolates grew at 50°C in pH 5 and pH 7 with 2 isolates were considered as the most potential, which were Rhodococcus sp. and Streptomyces sp..

KARAKTERISASI MORFOLOGI PISANG BATU (Musa balbisiana Colla) DI KABUPATEN KUANTAN SINGINGI Slamet Prayogi; Fitmawati '; Nery Sofiyanti
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Musa balbisiana Colla in Kuantan Singingi Regency can survive from the disease which causes banana in many other areas disappeared. Currently, there is no information about the diversity of M. Balbisiana from Kuantan Singingi. The purposesof this study were to record, to characterize, and to measure the diversity of M. balbisiana from Kuantan Singingi based on morphological characters. M. balbisiana Colla plants was sampled from three locations in Kuantan Singingi, they were Pangean, Cerenti, and Inuman. Morphological characters of M. balbisiana were analyzed using 88 characters. Analysis of UPGMA was conducted to find out the diversity of M.Balbisiana. We found six M.balbisiana cultivars, namely Aceh, Bungo, Kara, Jambi, Nipah, Beluluk. Similarity coefficient values between six banana cultivars ranged from 63%-89%. Cluster analysis based on 88 morphological characters of M. balbisianaproduced dendogram with 2 primary groups at percentage of similarity values of 66%.

EKSPLORASI DAN UJI DAYA HAMBAT BAKTERI ENDOFIT DARI TANAMAN BENALU SAWO (Helixanthera sp.), BENALU COKLAT (Scurulla sp.) DAN BENALU KOPI (Helixanthera sp.) TERHADAP Escherichia coli Febri Walpajri; Rodesia Mustika Roza; Fitmawati '
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Endophytic bacteria are microscopic microorganisms that live in the tissues of plants such as leaves, roots, fruits and stems. The parasite plants on sapodilla (Helixanthera sp.), cocoa (Scurulla sp.) and coffee (Helixanthera sp.) are medicinal plants. Theseplants have endophytic bacteria that have antibacterial compounds as antibiotics that inhibit the growth of Escherichia coli. The purpose of this study was to get endophytic bacteria isolates from parasite plants on sapodilla, cocoa and coffee, and determine the antibacterial activity against E. coli. Sampling was conducted in Kampar regency and Pekanbaru city. The parasite plants were collected from the field and their endophytic bacteria were selected using surface sterilization method and purified before their activity against E. coli being tested. The selected bacteria were then characterized. The results obtained 34 endophytic bacterial isolates that had activity against E. coli. Endophytic bacteria isolates which had the highest activity against E. coli isolates were Bbs4 from sapodilla parasites with 12,1 mm inhibition zone diameter.

SELEKSI DAN UJI ANTIBAKTERI AKTINOMISETES ASAL TANAH GAMBUT RIMBO PANJANG KAMPAR RIAU TERHADAP Escherichia coli DAN Salmonella typhi Siti Suryani; Rodesia Mustika Roza; Atria Martina
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Actinomycetes is one of microorganisms that can be used as a natural antibiotic. Metabolites produced by actinomycetes have antagonistic activity on bacteria, therefore it can be used as antibacteria. The purposes of this study were to select and test the antibacterial activity of actinomycetes isolated from peat soil in Desa Rimbo Panjang Kabupaten Kampar Riau to inhibit the growth of Escherichia coliand Salmonella typhi. This study was conducted from December 2013-January2014 at the Microbiology Laboratory, University of Riau. Serial dilutions and pour plate method used for isolation of actinomycetes while agar disk method used for antibacterial test. The result found a total of 24 actinomycetes isolates, 10 isolates inhibiting E. coli, and 16 isolates inhibiting S. typhi. The inhibition zone diameter of E. coliand S. typhi were 8,3 to 16,9 mm and 7,8 to 12,9 mm, respectively.

KEANEKARAGAMAN BURUNG DI BERBAGAI TIPE HABITAT PADA EKOSISTEM RAWA GAMBUT YANG TERDEGRADASI DESA TANJUNG LEBAN AREA TRANSISI CAGAR BIOSFER GIAM SIAK KECIL BUKIT BATU, RIAU Abdi Nazirwan; Haris Gunawan; Khairijon '
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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High degradation of peat land in the village of Tanjung Leban, Bengkalis was suspected to affect the bird fauna in this region. This study aimed to determine species diversity and abundance of birds in the village of Tanjung Leban on three types of habitat : burned land, rubber, and oil palm plantations. The study was conducted from March to May 2014.The combination of transects with point count and mist nets were used in this study. The diversity of bird in study area was analyzed usingShannon index diversity. A total of 39 bird species were observed, they were grouped into 26 families. Columbidae and Pycnonotidae were the families that havethe highest abundance compared with other families. Shannon indexesfor the diversityof the birdwhich observed in threehabitats ranged from 2.275 to 2.699. The highest value of Shannon index was found in the rubber plantation habitat.

POLA PERGERAKAN DAN WILAYAH JELAJAH GAJAH SUMATRA (Elephas maximus sumatranus Temminck, 1874) DENGAN MENGGUNAKAN GPS RADIO COLLAR DI KAWASAN TESSO NILO, RIAU Dwi Adhari Nugraha; Haris Gunawan; Khairijon '
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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The Sumatran elephant is the largest land mammal species still left on the island of Sumatra and is currently critically endangered. One of the remaining habitats for Sumatran elephant in Sumatra is Tesso Nilo. Conversion of land around Tesso Nilo becomes a plantation and settlement causing conflicts between humans and elephants increased. This research was conducted from May 2013 to June 2014 around Tesso Nilo National Park (TNTN) to determine the patterns of movement and homerange of Sumatran elephants in habitats that have been interfered by human activities using GPSRadio Collar technology and GIS analysis. The data was processed with Excel and Arcgis Ver. 10.1 program. The results showed that the patterns of the daily movement of elephants was random with an homerange area of 22.362,27 ha and consisted of various types of land.

UJI EFEKTIVITAS JAMUR Metarhizium anisopliae Cps.T.A ISOLAT LOKAL TERHADAP HAMA RAYAP (Coptotermes curvignathus) Khairunnisa '; Atria Martina; Titrawani '
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
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Termites is one of the major pest of oil palm plantations on peatlands. Termite control is generally performed using chemical insectisides. Several chemical insecticides can inhibit termite attack effectively but not effeciently used because it has many negative effects. The negative effect of chemical insecticides can be reduced using biological agents such as entomopathogenic fungus. This research aimed to determine the effectivenes and the best formulation of local isolate of M. anisopliae Cps.T.A and with the addition of 10% zeolite in controling C. curvignathus. The reaserch used Complete Randomized Design (CRD) with three treatments and eight replications. The results showed that density of M. anisopliae Cps.T.A with addition of 10% zeolite was 2,25 x 108 spora/g and M. anisopliae Cps.T.A was 2,50 x 108 spora/g. Germination of M. anisopliae Cps.T.A with 10% zeolite was 91,2% and M. anisopliae Cps.T.A was 88,1%. The treatment of M. anisopliae Cps.T.A produced the highest mortality (100%) of M. anisopliae Cps.T.A with 51% zeolite, whereas the mortality of termite control was only 16%.

Isolasi Bakteri Indigenus yang Potensial Sebagai Agen Biofertilizer Asal Tanah Gambut di Kawasan Zamrud dan Taman Nasional Tesso Nilo, Riau Rohyani '; Delita Zul; Bernadeta Leni Fibrianti
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Biofertilizer is a substance of functional microorganisms that has a role in providing nutrient for plant and can be used as a substitute for chemical fertilizer. This functional microorganisms such as phosphate solubilizing microorganisms, cellulolytic microorganisms, and nitrogen fixing microorganisms are rich in soil. The purpose of this study was to isolate the indigenous bacteria that are potential as biofertilizer agent. The group fuiontional bacteria was isolated from peat soil in the Zamrud forest and the Tesso Nilo National Park (TNTN) by growing them on suitable selective media. Symbiotic nitrogen fixing bacteria, non symbiotic nitrogen fixing bacteria, phosphate solubilizing bacteria (PSB), and cellulolytic bacteria were isolated using of yeast extract mannitol agar (YEMA) medium, Asby’s mannitol phosphate and NFb media, pikovskaya's medium, and cellulose congo red agar (CCRA) medium, respectively. The potential of isolated bacteria as biofertilizer agent was analyzed qualitatively based on size of clear zone formed around colony of PSB and cellulolytic bacteria, whereas symbiotic nitrogen fixing bacteria were selected by its ability to absorb congo red and non symbiotic nitrogen fixing bacteria were chosen based on its ability to form pellicle and change of medium color. As manys as 170 isolates were succesfully obtained, consisted of 77 isolates of symbiotic nitrogen fixing bacteria, 47 isolates of symbiotic nitrogen fixing bacteria, 74 of PSB, and 19 isolates of cellulolytic bacteria. The potential PSB and cellulolytic bacteria isolated were isolate of FTS1-2AS1 and SZ1-2B2, respectively that showed the highest value of ratio clear zone and diameter colony.

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