Articles
<![CDATA[Perbandingan cadangan listrik dan hilang panas alamiah pada manifestasi mata air panas di daerah kawah timur gunung ambang dan daerah panas bumi lahendong ]]>
<![CDATA[Palilingan, Rolles Nixon]]>;
<![CDATA[Tumimomor, Farly Reynold]]>;
<![CDATA[Mumek, Christofel Meidy]]>
<![CDATA[ JSME (Jurnal Sains, Matematika & Edukasi) Vol 8, No 1 (2020): JANUARI-FEBRUARI ]]>
Publisher : <![CDATA[Universitas Negeri Manado ]]>
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<![CDATA[ABSTRACT. North Sulawesi is an area that has the potential for geothermal energy sources, characterized by the manifestation of hot springs, active volcanoes with temperatures ranging from 80-200 0C, one of which is in the eastern crater of Mount Amabang and the geothermal area of Lahendong. This research was conducted to calculate and determine the amount of natural heat loss (Heatloss) and electricity reserves from the manifestation of hot springs in the eastern crater of the threshold volcano and Lahendong geothermal area, also to find out the similarities and differences of these manifestations. The method used is direct observation and measurement in the field by measuring the parameters needed in this study. Based on the results of the study, the large natural heat dissipation from the manifestation of hot springs in the eastern crater of the threshold volcano by 0.1047 MW and the geothermal area of Lahendong by 0.0690 MW with electricity reserves in the eastern crater of the threshold mountain by 1,047 MW and the Geothermal Lahendong area amounting to 0.690 MW. Keywords: Threshold, Lahendong, heat loss, electricity.]]>
<![CDATA[THE MEASURENMENT OF ELECTRICITY AND DIELECTRIC CHARACTERISTIC OF ONION (ALLIUM CEPA) ]]>
<![CDATA[Abd Wahidin Nuayi]]>;
<![CDATA[Farly Reynol Tumimomor]]>
<![CDATA[ Jambura Physics Journal Vol 1, No 1 (2019): April 2019 ]]>
Publisher : <![CDATA[Universitas Negeri Gorontalo ]]>
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DOI: 10.34312/jpj.v1i1.2394
<![CDATA[This experiment aimed to measurenment of the electricity and dielectric characteristic of onion (Allium cepa). In this study, the onion have been done through the variation of frequency and temperature. The frequency was setup in 30 different values from 100 Hz -1 MHz with the temperature are from 26 0 C up to 40 0C with each increase of 2 0C. The measurement was performed on AC current in 1 kHz and input voltage is one volt. The ions through to the membrane was measured as a conductance value by using LCRmeter that connected with two pieces of AgCl electrodes on both side of the membrane. Beside that, the conductance (G) was measured by the variation temperature of the solution. The results based on the electric characteristics variation of the frequency shows that the electricity of the onion membrane from the conductance itself is tend to increase and the capacitance is decrease due to increasing of the frequency. However, the conductance and the capacitance of the soaked onion membrane is increase doe to increase of the temperature than the original onion membrane. In adddition, the increasing of conductance to temperature was plotted on ln G to 1/T curve. The slope or gradient of the curve is used to determine the change of the self-energy of the membrane and its pore radius. Self-energy of ion which obtained from non-washed and washed and soaked (with distilled water) membrane is respectively 7,66967 x 10-21 J or 0,04787 eV dan 1,2156 x 10-19 J or 0,7869 eV ( 1 joule = 6,2415 x 1018 eV) and the average of pore membrane radius is 2,00 x 10-9 meter (2,00 nm) and 1,26 10-10 meter (0,126 nm). Based on the results the onion membrane could be a good membrane for established the electrisity anf the dielectricity.]]>
<![CDATA[Penggunaan kombinasi adsorben sebagai media filtrasi dalam menurunkan kadar fosfat dan amonia air limbah laundry ]]>
<![CDATA[Septiany Christin Palilingan]]>;
<![CDATA[Meity Pungus]]>;
<![CDATA[Farly Tumimomor]]>
<![CDATA[ Jurnal Kimia Fullerene Vol 4 No 2 (2019): Fullerene Journal of Chemistry ]]>
Publisher : <![CDATA[Fakultas Matematika dan Ilmu Pengetahuan Alam ]]>
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DOI: 10.37033/fjc.v4i2.59
<![CDATA[Wastewater of detergent residual that comes from the washing process (laundry) has the potential to pollute environmental sustainability such as rivers and soil if it is thrown away in large volumes without any prior processing. Easy and inexpensive methods for processing laundry wastewater for household-scale have been carried out and proven to reduce levels of pollutants contained in laundry wastewater such as phosphate and ammonia. This study aims to determine the effect of the use of filtration media using a combination of activated charcoal adsorbent, zeolite, silica sand, anthracite and ferolite in reducing phosphate and ammonia levels in laundry wastewater. Based on the results of laboratory tests on the parameters of phosphate and ammonia test, it was found that after the filtration process, there was a decrease in phosphate and ammonia levels in the samples of laundry wastewater by 83.3% and 63.6% respectively. Thus, from the research data, it can be concluded that the filtration media in the form of a combination of adsorbents used in this study proved to be able to reduce phosphate and ammonia levels in samples of laundry wastewater.]]>
<![CDATA[Pemanfaatan karbon aktif dari sabut kelapa sebagai elektroda superkapasitor ]]>
<![CDATA[Farly Reynol Tumimomor]]>;
<![CDATA[Septiany Christin Palilingan]]>
<![CDATA[ Jurnal Kimia Fullerene Vol 3 No 1 (2018): Fullerene Journal of Chemistry ]]>
Publisher : <![CDATA[Fakultas Matematika dan Ilmu Pengetahuan Alam ]]>
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DOI: 10.37033/fjc.v3i1.29
<![CDATA[In this study, coconut fiber based activated carbon has been used for fabrication of supercapacitors. Iodine absorption test is performed to measured absorption level porous activated carbon sample size is relatively small (microporous). Characteristics of the activated carbon material covering the surface morphology and structure were tested using SEM and XRD. Electrode materials with composition (Activated charcoal: PVDF = 9: 1 (w / w)), the current collector and separator has been assembled to be tested its performance as an electrical charge storage device. The test results by cyclic voltammetry method was to look at the performance supercapacitor devices at once to obtain the value of the capacitance curve obtained voltammograms. Based on the results of the calculation of the capacitance, the highest capacitance values obtained in the supercapacitor with activated carbon electrodes in coconut fiber steam 50 mL / bar with a capacitance value is 50.73 F / g.]]>
<![CDATA[Penurunan kadar BOD dan COD dalam limbah cair laundry menggunakan kombinasi adsorben alam sebagai media filtrasi ]]>
<![CDATA[Meity Pungus]]>;
<![CDATA[Septiany Christin Palilingan]]>;
<![CDATA[Farly Tumimomor]]>
<![CDATA[ Jurnal Kimia Fullerene Vol 4 No 2 (2019): Fullerene Journal of Chemistry ]]>
Publisher : <![CDATA[Fakultas Matematika dan Ilmu Pengetahuan Alam ]]>
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<![CDATA[Laundry wastewater is generated in large quantities will pollute the environment such as rivers and soil if thrown away without any prior treatment. Laundry wastewater treatment methods that have been carried out are easy and inexpensive for household scale and have been proven to reduce levels of organic pollutants. Two parameters that can indicate the presence of organic pollutants in laundry wastewater are Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD). This study aims to determine the effect of the use of filtration media in the form of a combination of activated carbon adsorbent, zeolite, silica sand, anthracite and ferolite in reducing levels of BOD and COD in laundry wastewater. Based on the results of laboratory tests on the BOD and COD test parameters, it was found that after the filtration process there was a decrease in the BOD and COD levels in the laundry wastewater samples respectively by 53% and 54%. The results of the statistical analysis also showed that the presence of filtration treatment had a significant effect in reducing levels of BOD and COD in laundry wastewater samples. Thus, it can be concluded that the presence of filtration treatment is proven to significantly reduce BOD and COD levels which can also indicate decreased levels of organic pollutants contained in laundry wastewater.]]>
<![CDATA[PEMANFAATAN KARBON AKTIF DARI BAMBU SEBAGAI ELEKTRODA SUPERKAPASITOR ]]>
<![CDATA[Farly Tumimomor]]>;
<![CDATA[Akhiruddin Maddu]]>;
<![CDATA[Gustan Pari]]>
<![CDATA[ JURNAL ILMIAH SAINS Volume 17 Nomor 1, April 2017 ]]>
Publisher : <![CDATA[Sam Ratulangi University ]]>
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DOI: 10.35799/jis.17.1.2017.15802
<![CDATA[PEMANFAATAN KARBON AKTIF DARI BAMBU SEBAGAI ELEKTRODA SUPERKAPASITOR ABSTRAKPada penelitian ini, karbon aktif berbasis bambu telah digunakan untuk pembuatan superkapasitor. Uji daya jerap iodin dilakukan untuk mengukur tingkat serapan pori sampel karbon aktif yang ukurannya relatif kecil (mikropori). Karakteristik bahan karbon aktif yang meliputi struktur kristal dan morfologi permukaannya diuji dengan menggunakan SEM dan XRD. Bahan elektroda dengan komposisi (Karbon aktif : PVDF = 9:1 (b/b)), kolektor arus dan separator telah dirangkai untuk diuji kinerjanya sebagai perangkat penyimpanan muatan listrik. Metode siklik voltametri digunakan untuk melihat kinerja perangkat superkapasitor dengan mengukur nilai kapasitansi spesifik berdasarkan kurva voltammogram. Berdasarkan hasil perhitungan nilai kapasitansi spesifik diperoleh nilai kapasitansi spesifik tertinggi pada superkapasitor dengan elektroda bambu yang diaktivasi dengan steam 50 mL/bar yaitu sebesar 59.50 F.Kata kunci: Karbon aktif bambu, siklik voltametri, kapasitansi spesifik, superkapasitor.  UTILIZATION OF BAMBOO BASED ACTIVATED CARBON AS SUPERCAPACITOR ELECTRODE ABSTRACT In this study, bamboo based activated carbon has been used for fabrication of supercapacitors. Iodine absorption test is performed to measured absorption level porous activated carbon sample size is relatively small (microporous). Characteristics of the activated carbon material covering the surface morphology and structure were tested using SEM and XRD. Electrode materials with composition (Activated charcoal: PVDF = 9: 1 (w / w)), the current collector and separator has been assembled to be tested its performance as an electrical charge storage device. The test results by cyclic voltammetry method was to look at the performance supercapacitor devices at once to obtain the value of the capacitance curve obtained voltammograms. Based on the results of the calculation of the capacitance, the highest capacitance values obtained in the supercapacitor with activated carbon electrodes in bamboo steam 50 mL / bar with a capacitance value is 59.50 F / g.Keywords: Bamboo activated carbon, cyclic voltammetry, the specific capacitance, supercapacitor.]]>
<![CDATA[PENGARUH FILTRASI TERHADAP NILAI pH, TDS, KONDUKTANSI DAN SUHU AIR LIMBAH LAUNDRY ]]>
<![CDATA[Farly Tumimomor]]>;
<![CDATA[Septiany Palilingan]]>;
<![CDATA[Meity Pungus]]>
<![CDATA[ Charm Sains: Jurnal Pendidikan Fisika Vol 1 No 1 (2020): FEBRUARI ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado ]]>
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DOI: 10.53682/charmsains.v1i1.1
<![CDATA[Laundry wastewater has the potential to pollute the aquatic environment if it is thrown away in large volumes without any prior treatment. The easy and inexpensive laundry wastewater treatment method for household-scale has been carried out through the filtration method using a combination of natural adsorbent as a laundry wastewater filtration media. This study aims to determine the effect of filtration using a combination adsorbents of activated charcoal, zeolites, silica sand, anthracite and ferolite on pH, TDS (Total Dissolved Solid), electrical conductivity and temperature values in laundry wastewater samples. Based on laboratory test results, it was found that after the filtration process, a pH value of 22.2% was decreased, the TDS level was 21.5% and the conductance value was 15.1%, while the temperature value was relatively stable. Statistically, the presence of filtration treatment only gives a significant influence on changes in pH, TDS and conductance values while the relative temperature value does not change.]]>
<![CDATA[PENGGUNAAN APLIKASI QUIZIZZ SEBAGAI ALAT EVALUASI PEMBELAJARAN DALAM HUKUM NEWTON TENTANG GERAK ]]>
<![CDATA[Munjaidah]]>;
<![CDATA[Jimmy Lolowang]]>;
<![CDATA[Farly Tumimomor]]>
<![CDATA[ Charm Sains: Jurnal Pendidikan Fisika Vol 2 No 3 (2021): OKTOBER ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado ]]>
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DOI: 10.53682/charmsains.v2i3.124
<![CDATA[For better education it is necessary to use information and communication technologies to support the learning process and tools for quality assessment. The Quizizz application is an online based learning assessment tool that can be used by teachers and students. Newton's law of motion was examined using the Quizizz application learning assessment tool. The purpose of this study was to determine whether the Quizizz evaluation tool was effective in improving students' learning outcomes using Newton's law of motion. This study was carried out on class X students of the SMA Negeri 1 Tondano with 21 respondents who use the Quizizz application as a learning assessment tool. The design of this study used the One Group Pretest-Posttest design and the tools used were Pretest and Posttest using the Quizizz application learning assessment tool. This research begins with the pretest, the implementation of the physics learning with Zoom Meeting and ends with the post-test. The results of this study gave an average score of 29.90 pretest and posttest scores of 85.10. The results of the N-Gain test give a value of 79.0985, as can be seen from the categorization of the effectiveness interpretation with a percentage> 76%. So it can be said that learning Newton's law of motion with the Quizizz learning assessment tool falls into the effective category.]]>
<![CDATA[Pengaruh Model Problem Based Learning (PBL) Menggunakan Metode Demonstrasi dan Eksperimen pada Pembelajaran Fisika tentang Hukum Newton ]]>
<![CDATA[Agnes Mayanti]]>;
<![CDATA[Cosmas Poluakan]]>;
<![CDATA[Farly Reynol Tumimomor]]>
<![CDATA[ Charm Sains: Jurnal Pendidikan Fisika Vol 3 No 1 (2022): FEBRUARI ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado ]]>
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DOI: 10.53682/charmsains.v3i1.144
<![CDATA[Learning physics is often seen as an abstract science presented in a theory that is less interesting and seems difficult, and assumes that physics is difficult to master and understand. With the PBL (problem based learning) learning model, it is expected to make a major contribution to students where students are able to master and understand a physics concept. The purpose of this study was to determine the effect of the PBL learning model using demonstration and experimental methods on learning outcomes of physics about Newton's law at SMK Anugrah Tondano in the odd semester of the 2019/2020 school year. This study used a posttest-only control group design. The treatment used in this experiment is a PBL learning model using demonstration and experimental methods. Analysis of the data used is normality test and statistical test with the help of SPSS 25 application. The results of this study indicate that the problem based learning (PBL) model has an effect on student learning outcomes.]]>
<![CDATA[Penggunaan Model Pimca dalam Pembelajaran Fisika Materi Pembiasan Cahaya Dengan Graphline ]]>
<![CDATA[Indah Ula]]>;
<![CDATA[Cosmas Poluakan]]>;
<![CDATA[Farly Reynol Tumimomor]]>
<![CDATA[ Charm Sains: Jurnal Pendidikan Fisika Vol 3 No 1 (2022): FEBRUARI ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado ]]>
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DOI: 10.53682/charmsains.v3i1.147
<![CDATA[Research was carried out on physics learning models using light refraction material with graph line. The purpose of this study is to determine student learning outcomes using the PIMCA (Presentation, Idea Mapping, Conceptualization and Formative Assessment) model introduced and developed by Cosmas Poluakan. This study was carried out at SMA Negeri 1 Passi with a number of participants of up to 20 students. The design of this study is based on the One Group Pretest-Posttest-Design. The instruments used in this study were pretest and posttest. The process of this research starts with the pretest, implementing physics learning by following the 4 steps of the PIMCA model, and ends with the posttest. The results of the descriptive statistics showed an average pretest score of 30.00 and a posttest score of 77.77 with a difference of 47.77. From the results of the analysis with the N-Gain test, there were 10 students who experienced an increase in learning outcomes in the high category, 9 students who experienced an increase in learning outcomes in the middle category, and 1 student who experienced an increase in the Learning outcomes in the lower category. With a percentage of 50% of students experiencing an increase in learning outcomes in the high category. Thus, the results of this study show that the PIMCA learning model is very effective in learning physics.]]>
