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All Journal JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI JURNAL TEKNOLOGI LINGKUNGAN Warta Rimba Biota Jurnal Ilmiah Ilmu-Ilmu Hayati Muamalah BERITA BIOLOGI JURNAL BIOLOGI INDONESIA ZOO INDONESIA Hasanuddin Journal of Applied Business and Entrepreneurship JURNAL ILMIAH LIVING LAW SOL JUSTICIA Jurnal EDUCATIO: Jurnal Pendidikan Indonesia International Journal for Educational and Vocational Studies Lensa : Jurnal Kependidikan Fisika Indonesian Review of Physics (IRiP) Jurnal Penelitian Pendidikan Fisika Zoo Indonesia Kronologi Jurnal Teknik Mesin Sinergi Natural Science Education Research (NSER) Paradigma: Jurnal Kajian Budaya
Erniwati Erniwati
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UJI RETENSI DAN EFEKTIVITAS TANAMAN KUMIS KUCING (Orthosiphon aristatus) TERHADAP SERANGAN RAYAP TANAH (Coptotermes sp) PADA KAYU DURIAN (Durio zibethinus) Mariana, Eka; Ariyanti, Ariyanti; Erniwati, Erniwati
Warta Rimba Vol 1, No 1 (2013)
Publisher : Warta Rimba

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.402 KB)

Abstract

Nowadays, utilization ofnon-durable wood species in Indonesia is one alternative to meet the needs ofthe wood. Use natural preservatives such as Orthosiphon aristatus in natural wood preservation processis highly recommended as environmentally friendly.This study was aimed to determine retention and the effects of Orthosiphon aristatus leaves extracts as preservation material of Durio zibethinus wood on the Coptotermes sp. Attacks. Regency and the laboratory of Forestry Science, Tadulako University, from May to June 2013. The study was using completely randomized design with factorial pattern. The treatment of study was applying two factors. First, concentration of Orthosiphon aristatus extracts with three levels, namely; 9.09% (A1), 16,67% (A2), and 23,07% (A3). Second, Dipping time with three levels,namely: 1 day (B1), 3 days (B2), and 5 days (B3). The results showed that the highest retention value (3,538g/cm3) was achieved by the combination treatment between concentration 23,07% and dipping time 5 days (A3B3) while the lowest retention value (0,562g/cm3) was achieved by the combination treatment between concentration 9,09% and dipping time 1 day (A1B1). Hence, the lowest effectivity of preservation materials indicated by the highest weight loss,was achieved by A1B1 combination treatment (3,37%) while the lowest (highest effectivity) was achieved by (A3B3) combination treatment (1,88%). Keywords: Concentration, Dipping time, Orthosiphon aristatus, Durio zibethinus, Coptotermes sp.
Analisis Variasi Temperatur Aktivasi Terhadap Daya Serap Arang Aktif Tandan Aren (Arenga Pinnata Merr) Dengan Agen Aktivasi Potassium Silicate(K2SiO3) Azam, Muhammad; Anas, Muhammad; Erniwati, Erniwati
Jurnal Penelitian Pendidikan Fisika Vol 5, No 3 (2020): Jurnal Penelitian Pendidikan Fisika
Publisher : Jurusan Pendidikan Fisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jipfi.v5i3.13803

Abstract

This study aims to determine the effect of variation of activation temperature of activated carbon from sugar palm bunches of chemically activatied with the activation agent of potassium silicate (K2SiO3) on the adsorption capacity of iodine and methylene blue. Activated carbon from bunches of sugar palmacquired in four steps: preparationsteps, carbonizationstepsusing the pyrolysis reactor with temperature of 300 oC - 400 oC for 8 hours and chemical activation using of potassium silicate (K2SiO3) activator in weight ratio of 2: 1 and physical activation using the electric furnace for 30 minutes with temperature variation of600 oC, 650 oC, 700 oC, 750 oC and 800 oC. The iodine and methyleneblue adsorption testedby Titrimetric method and Spectrophotometry methodrespectively. The results of the adsorption of iodine and methylene blue activated carbon from sugar palm bunches increased from 240.55 mg/g and 63.14 mg/g at a temperature of 600 oC to achieve the highest adsorption capacity of 325.80 mg/g and 73.59 mg/g at temperature of 700 oC and decreased by 257.54 mg/g and 52.03 mg/g at a temperature of 800 oCrespectively.However, it does not meet to Indonesia standard (Standard Nasional Indonesia/SNI), which is 750 mg/g and 120 mg/g respectively.
Analisis Nilai Kapasitansi Komposit Lithium Besi Oksida (Li5FeO4) dan Karbon Aktif Kulit Biji Mete sebagai Bahan Dasar Elektroda Baterai Lithium: Efek Variasi Massa Ahmad, Ahmad; Erniwati, Erniwati; RM, Vivi Hastuti
Jurnal Penelitian Pendidikan Fisika Vol 5, No 3 (2020): Jurnal Penelitian Pendidikan Fisika
Publisher : Jurusan Pendidikan Fisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jipfi.v5i3.13932

Abstract

Previous researchers have investigated the manufacture of lithium battery electrode materials from Li5FeO4 composites with activated carbon of cashew nutshells. However, the effect of combining activated carbon to the lithium battery electrode material was not reviewed. The purpose of this study was to determine the effect of the comparison of the mass composition of Li5FeO4 and cashew nut shell active carbon on the capacitance value of the lithium battery electrode. These electrodes generated using the high-temperature solid-state method. The material used is iron oxide Fe2O3 from iron sand and LiOH.H2O, which homogenized with a sintering temperature of 850ÌŠC for 15 hours with a ratio of 6/1 to produce Li5FeO4. Then Li5FeO4 was compiled with activated carbon of cashew nut shells with a mass fraction of activated carbon 60%, 50%, 40%, and 20%. Furthermore, it characterized using cyclic voltammetry. The results of cyclic voltammetry characterization for a mass fraction of 60% produce a capacitance of 4.7 F / g, a mass fraction of 50% produces a capacitance of 59.1 F / g, a mass fraction of 40% produces a capacitance of 87, 3 F / g, and a mass fraction of 20% produces capacitance of 243 F / g. From the four variations of mass fraction, the capacitance that meets the lithium battery electrode capacitance on the market is the mass fraction of 20%.
KERAGAMAN DAN KELIMPAHAN LEBAH SOSIAL (APIDAE) PADA BUNGA TANAMAN PERTANIAN MUSIMAN YANG DIAPLIKASI PESTISIDA DI JAWA BARAT Kahono, Sih; Erniwati, Erniwati
BERITA BIOLOGI Vol 13, No 3 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i3.660

Abstract

Study of diversity and abundance of social bees (Apidae) in the pesticide-applied seasonal crops were carried out for nine species of crops in a lowland area, Dramaga, Bogor and on 17 species of crops ina highland area, Lembang, Bandung, both in the province of West Java. Two species of honey bees (Apis cerana and A. dorsata) and one species of stingless bee (Trigonalaeviceps) were recorded from the lowland crops,while only A. cerana was found in the highland crops. The most abundant bee species on both low and highland was the honey bee A. cerana. The number of A. cerananests and T. laevicepsnests in the surroundings of the study sites were relatively high. Colony members of both bee species were very active to collect nectar and pollen from flowers in non-pesticide-applied sites; however, the density of bees visiting flowers in pesticide-applied seasonal crops in both lowland and highland were relatively low.
RETENSI DAN EFEKTIVITAS BAHAN PENGAWET EKSTRAK DAUN CENGKEH (Syzygium aromaticum) PADA KAYU DURIAN (Durio zibethinus) TERHADAP SERANGAN RAYAP TANAH (Coptotermes sp.) Toleng, Fitriyani N.; Erniwati, Erniwati; Ariyanti, Ariyanti
Warta Rimba Vol 2, No 2 (2014)
Publisher : Warta Rimba

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.159 KB)

Abstract

Effectiveness of natural substance as preservative agent is needed to be further observed. One of the substances is extract of Glove (Syzygium aromaticum) leaf. This extract was considered to be effective material on Durian (Durio zibethinus) wood preservative against Subterranean termite (Coptotermes sp). The aims of this study were compare the retention and the affectiveness of preservative materials which  extracted from Glove leaf by using different method of extraction. This studi was done at Agro-technology Laboratory of Agricultural Faculty, Tadulako University, over the period of March and June 2014. Bioassay on Termite destruction was done at Maku Village, Dolo of Sigi Regency. The experiment was arranged based on Completely Randomized Design (CRD) in two different factorial patterns. The first factor was different method on leaf extraction (A) i.e. by using ethanol (A1), and by using distillated water (A2). While the second factor (B) was different time on soaking material, i.e. 1 day soaking time (B1), and 3 days were soaking time (B2). All units was performed as negative control. One percent of preservative extract was applied on each experimental unit. The outcome of this study showed that water content of axtract was 14,726% and the density was 0,463 g/cm3. The highest retention value 0,1244 g/cm3 was recorded on the treatment of 3 days ethanol extraction (A1B2), while the lowest value 0,0868 g/cm3 was detected on the treatment of 1 day water extraction. The highest value on effectiveness (or lowest rate on loss weight) 2,4075% was detected after the treatment by using 3 days ethanol extraction substance, while the lowest value 4,6818% was  measured on control unit. Key words: Syzygium aromaticum, Durio zibethinus, Retention, Effectiveness.  
RETENSI BAHAN PENGAWET EKSTRAK DAUN TEMBELEKAN (Lantana camara L) PADA BEBERAPA JENIS KAYU DAN EFEKTIFITASNYA TERHADAP SERANGAN RAYAP TANAH (Coptotermes sp.) Riska, Riska; Erniwati, Erniwati; Hapid, Abdul
Warta Rimba Vol 2, No 2 (2014)
Publisher : Warta Rimba

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Abstract

High-grade durable wood could not be longer to meet the various needs, this caused by limited and the more expensive price, so it must use low grade durable wood. The use of low grade durable wood should be followed by the wood preservation process. This study aims to determine the preservative retention of leaves tembelekan (Lantana camara L) on bayur (Pterospermum sp), benuang (Octomeles sumatrana Miq) and durian (Durio zibethinzs) and its effectiveness against subterranean termites (Coptotermes sp), attack. It was conducted at the Laboratory of Agrotechnology, Faculty of Agriculture, University Tadulako in March to june 2014. Testing Subterranean termites (Coptotermes sp) test was carried out at the Maku Village, District of Dolo, Sigi Regency, Central Sulawesi, using a completely randomized design (CRD), with treatment of different wood species and 3 days soaking duration at a concentration of 1% preservative with 6 replications. The results show the moisture content of bayur, benuang and durian woods are 13,10%, 10,81% and 11,35% respectively. The wood densiy of bayur 0,480g/cm3, benuang 0,277 g/cm3 and durian 0,402g/cm3 and the highest retention values is found at wood of durian 59,09 g/cm3 and the highest retention values is at bayur 41,67 g/cm3. In addition, the highest weeight loss (leas effectiveness) of 15,02% on the wood of bayur (control) and the lowest (highest Effectiveness) on wood of benuang 0,72%. Key words: Leaf extract of tembelekan, Lantana camara L, Octomeles sumatrana Miq, Pterospermum sp, durio sibethinzs
EFEKTIVITAS BAHAN PENGAWET ALAMI DARI TANAMAN TEMBELEKAN (Lantana camara L) PADA BEBERAPA JENIS KAYU TERHADAP SERANGAN RAYAP TANAH (Coptotermes sp.) Safitri, Risky; Erniwati, Erniwati; Hapid, Abdul
Warta Rimba Vol 2, No 2 (2014)
Publisher : Warta Rimba

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (550.976 KB)

Abstract

Many favorable properties of wood are available in almost all parts of the world, easily obtained in different shapes and sizes, relatively easy to process, as well as very decorative appearance. However, wood also has a weakness that could be damaged by a variety of factors either biological, physical, mechanical or chemical. In reality, the main factors causing damage to the wood are fungi, bacteria, insects and marine animals (marine borer). The organisms might damage the wood because they make as a shelter or as feed. Therefore, there should be conducted wood preservation to overcome the unfavorable properties of the woods. Wood preservation aims to extend the use of low-class durability of timber species such as Bayur (Pterospermum sp), Durian (Durio zibethinus) and Benuang (Octomeles sumatrana Miq). This study aimed at determining the effectiveness of a natural preservative tembelekan (Lantana camara L). The research was conducted at the Forestry Sciences Laboratory, Department of Forestry, Forestry Faculty, Tadulako University and Talise Mantikulore Sub-district, started from May to July 2013. The study was designed with the method of completely randomized design (CRD) with three wood species treatment, namely bayur, durian and benuang. Each was preserved with a natural preservatives of tembelekan extract with a concentraation of 13,04%. There were 10 samples of each type of wood, consisting of 5 test samples preserved and 5 controls (without preserrvatives). There were 30 test samples. The parameters observed were preservative effectiveness of the sample weight after feeding on soil termites. The study shows that highest natural preservative effectiveness on benuang wood was preserved with the sample weight loss of 2,25% and the lowest on bayur wood was preserved with the sample weight loss of 3,47% when they were compared with the control sample (without preservative). Using tembelekan extract might increase wood resistance to soil termite attacks. Keywords: Captotermes sp, Durio zibethinus, Lantana camara L, Octomeles sumatrana Miq, tembelekan.
KERAGAMAN DAN KELIMPAHAN LEBAH SOSIAL (APIDAE) PADA BUNGA TANAMAN PERTANIAN MUSIMAN YANG DIAPLIKASI PESTISIDA DI JAWA BARAT Sih Kahono; Erniwati Erniwati
BERITA BIOLOGI Vol 13, No 3 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i3.660

Abstract

Study of diversity and abundance of social bees (Apidae) in the pesticide-applied seasonal crops were carried out for nine species of crops in a lowland area, Dramaga, Bogor and on 17 species of crops ina highland area, Lembang, Bandung, both in the province of West Java. Two species of honey bees (Apis cerana and A. dorsata) and one species of stingless bee (Trigonalaeviceps) were recorded from the lowland crops,while only A. cerana was found in the highland crops. The most abundant bee species on both low and highland was the honey bee A. cerana. The number of A. cerananests and T. laevicepsnests in the surroundings of the study sites were relatively high. Colony members of both bee species were very active to collect nectar and pollen from flowers in non-pesticide-applied sites; however, the density of bees visiting flowers in pesticide-applied seasonal crops in both lowland and highland were relatively low.
PENGARUH BERBAGAI KOMBINASI CAMPURAN SERBUK KAYU GERGAJIAN TERHADAP PERTUMBUHAN JAMUR TIRAM PUTIH (Pleurotus ostreatus) Marno, Marno; Yusran, Yusran; Erniwati, Erniwati
Jurnal Warta Rimba Vol 3, No 1 (2015)
Publisher : Universitas Tadulako

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Abstract

The objectives of this study were to investigate the effects of some sawdust combinationsas growth medium on the growth and the yield of white oyster mushroom (Pleurotus ostreatus). The research was conducted at Boyaoge village, Palu, Central Sulawesi from February to April 2013. This study used experimental method by Completely Randomized Design (CRD) with sixsawdust combination treatments, i.e; sawdust of Palapi (Heritiera sp.) and Cempaka (Elmerrilia sp.) (M1), Palapi (Heritiera sp.) and Gmelina (Gmelina arborea) (M2), Palapi (Heritiera sp.) and Durian (Durio sp.) (M3), Cempaka (Elmerrilia sp.) and Durian (Durio sp.) (M4), Cempaka (Elmerrilia sp.) and Gmelina (Gmelina arborea) (M5) and Durian (Durio sp.) and Gmelina (Gmelina arborea) (M6).The results showed that all combinations of sawdust significantly affected all growth variables assessed. Combination of Cempaka and Gmelina sawdust (M5) gave the higher of the number of fruiting bodies (5,8) and cap length (5,376 cm). Combination of Cempaka and Palapi sawdust (M1) gave the higher of cap diameter (10,028 cm). Hence, combination of Palapi and Gmelina sawdust (M2) gave the higher of fresh weight of fruiting bodies (98,6 g), while combination of Durian and Gmelina sawdust (M6) gave the higher of dry weight of fruiting bodies (5,8 g). Keywords: Growth Medium, Combination, Sawdust, Oyster Mushroom (Pleurotus ostreatus).
KEMAMPUAN INFEKSIISOLAT BEAUVETIA SP. PADA STADIA LARVA ULAT ETIONATA THRAX L Erniwati, Erniwati; Rahmansyah, M.
BERITA BIOLOGI Vol 4, No 2&3 (1998)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i2&3.1279

Abstract

Tintomophatogemcfungus is isolated from an infected pupae ofH. thrax -L (Hesperiidae: Lepidoptera).The fungus 3 is cultured and determined as Beauveria sp.Conidia suspension of the fungi (7.6x10 conidia/ml) use as inoculant and reinoculated to five of difference larval stages.The larvae were cultured in the laboratory.The infected larvae become weak and finally died at ten days after inoculation.It is highly indication that the fungi may be potentially applicable as biocontrol agent for the insect.The fungus attack the E. thrax since the beginning of the larvae stage.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Hapid Ahmad Ahmad Ali, Nurkiani Jail ANDI ASWAN Ariyanti Ariyanti Ariyanti, Sri Pina Asniati, Asniati Asra, Asra Asriani Asriani, Asriani Aswal, Achmad Awal Riyanto Bandy, Nur Afni Bayu Alhadad Efendi Busnawir Busnawir Cepi Pahlevi Cholidi Cholidi Dicha Maulia Dani Eka Mariana Eso, Rosliana Fauziatul Hasana Febriyan Ibnu Rizal Ferlyasari, Ferlyasari Fifin, Fifin Fitriyani N. Toleng Hamzari Hamzari Hari Nugroho Hari Nugroho Hasan, Yeni Sariani Hendra Naldi Hijrah, Nandini Nur Hunaidah, Hunaidah I Ketut Suada Jamhari Jamhari Jusmiani, I La Maronta Galib, La Maronta LA SAHARA, LA Luh Sukariasih M, Hunaidah M. Rahmansyah Makmur Saini Marhatang Marhatang Marno Marno Maulani, Magfirah Miftahul Jannah Mongkito, Vivi Hastuti Rufa Muhammad Anas Muhammad Azam Muhammad Ikram Fauzan Muhammad Rivai Musalina, Musalina Muthmainnah Muthmainnah Naba, Sul Daeng Nego, Elisyafan Abet Nengsi, Diana Putri Nofe Firman Zai Nur Ihsan HL Nurmala Sari Nursabiah, Nursabiah Priatama Bagus Pribadi Pungki Lupiyanindyah Pungki Lupiyanindyah, Pungki Rahmansyah, M. Randy Maulanda Riska Riska Risky Safitri Risnawati Risnawati Riyanto, Awal Riyanto, Awal RM, Vivi Hastuti Roestamy, Martin Rosida Diani Sahara, Yuni Santi Agustina Saputra, I Gede Purwana Edi Segara, Andika Sih Kahono Sih Kahono Siska Stella Monceria Waruwu siti raudatun niswah Sofi Mursidawati Suci, Wulan Sufiani, Yuni Sukariasih, Luh Syafrina, Yelda Tahang, La Trisnawati, Agus Wahyudi, Nuryanto Hafid Warsito Tantowijoyo, Warsito Willa Desislawaty Woro A. Noerdjito, Woro A. Yasrina Tanjung Yoga Pratama Yuris, Muh. Yusnanita, Yusnanita Yusran Yusran Zarianti, Zarianti Zhahir, Ilma