Pub Date : 2020-07-30DOI: 10.31258/JKFI.17.2.87-91
Cici Sang Putri, Usman Malik
Hot water depth analysis have been carried out using the Schlumberger Configuration geoelectric method. This research investigatis subsurface conditions by analyzing the resistivity value. The study was conducted at the Pawan Hot Spring tourisme object, Rokan Hulu, Riau using the Schlumberger rule which is brought closer to 2 track points with a length of 90 meters each. Measurment data were processed using Progress Software and the resistivity values obtained at Line I 100,83 – 63,54 Ohm.m with depths of 0,00 – 46 m and at Line II 146,73 – 239,71 Ohm.m with depths of 0,00 – 33 m. The interpretation result of the two tracks obtained that the hot water flow in Line I is in the sand layer with resistivity values 95,28 Ohm.m and 63,54 Ohm.m at depths of 3,77 – 46 m. Line II is found in the sandy clay layer with a resistivity value of 1,05 Ohm.m at depth of 3,56 – 3,66 m.
{"title":"ANALISA KEDALAMAN AIR PANAS MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DI OBJEK WISATA AIR PANAS PAWAN","authors":"Cici Sang Putri, Usman Malik","doi":"10.31258/JKFI.17.2.87-91","DOIUrl":"https://doi.org/10.31258/JKFI.17.2.87-91","url":null,"abstract":"Hot water depth analysis have been carried out using the Schlumberger Configuration geoelectric method. This research investigatis subsurface conditions by analyzing the resistivity value. The study was conducted at the Pawan Hot Spring tourisme object, Rokan Hulu, Riau using the Schlumberger rule which is brought closer to 2 track points with a length of 90 meters each. Measurment data were processed using Progress Software and the resistivity values obtained at Line I 100,83 – 63,54 Ohm.m with depths of 0,00 – 46 m and at Line II 146,73 – 239,71 Ohm.m with depths of 0,00 – 33 m. The interpretation result of the two tracks obtained that the hot water flow in Line I is in the sand layer with resistivity values 95,28 Ohm.m and 63,54 Ohm.m at depths of 3,77 – 46 m. Line II is found in the sandy clay layer with a resistivity value of 1,05 Ohm.m at depth of 3,56 – 3,66 m.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127668005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-30DOI: 10.31258/JKFI.17.2.108-113
Marisayani Hutauruk, Salomo Sinuraya
The study of soil carried out from oil palm plantation soils at Garuda sakti street, Tapung, Kampar, Riau has been implemented since November 2019 to March 2020. This study aims to determine magnetic susceptibility, mass susceptibility, magnetic degree and to identify soil compositions and the content of heavy metals in the soils and to analyse the influence of content of heavy metals to the magnetic susceptibility. The samples were taken about one hundred points, then the samples were dried, cleaned, mashed and sifted. Magnetic susceptibility was measured using the Probe Magnetic Pasco PS-2162. Magnetic particles were separated from samples using the NdFeB magnet and identification of soil composition and the content of heavy metals were carried out using the XRF. The result shows that the value of magnetic susceptibility, mass susceptibility, magnetic degree are fluctuated and the compositon of the soils are Mg, Al, Si, P, K, Fe, Ca, Ti, V, Cr, Mn, Ni, Zn S, Cl, Co, Cu, Ga, Ge, As, Br, Rb, Sr, Y, Zr, Nb, Ag, Eu, Re and Pb and proved that soil has been contaminated by heavy metals such as V, Cr, Al, Fe, Ti and Sr from the soils until increase the Magnetic susceptibility of that soils.
自2019年11月至2020年3月，对廖内省坎帕省塔蓬市Garuda sakti街油棕种植园土壤进行了土壤研究。本研究旨在测定土壤磁化率、质量磁化率、磁化度，鉴定土壤成分和土壤重金属含量，分析重金属含量对土壤磁化率的影响。取样品约一百分，然后将样品干燥、清洗、捣碎、过筛。磁化率采用Probe Magnetic Pasco PS-2162测定。利用钕铁硼磁体分离样品中的磁性颗粒，用XRF对土壤成分和重金属含量进行鉴定。结果表明,磁化率的价值,质量磁化率、磁度波动和釉面墙地砖的土壤是毫克,铝,硅,磷、钾、铁、钙、钛、V,铬、锰、镍、锌,Cl,有限公司铜、Ga,通用电气,Br, Rb, Sr, Y,锆、Nb, Ag)、欧盟、再保险和Pb和证明,土壤被重金属污染,如V,铬、铝、铁、钛和Sr从土壤到增加土壤的磁化率。
{"title":"ANALISA SUSEPTIBILITAS MAGNETIK DAN KANDUNGAN LOGAM BERAT PADA TANAH PERKEBUNAN KELAPA SAWIT","authors":"Marisayani Hutauruk, Salomo Sinuraya","doi":"10.31258/JKFI.17.2.108-113","DOIUrl":"https://doi.org/10.31258/JKFI.17.2.108-113","url":null,"abstract":"The study of soil carried out from oil palm plantation soils at Garuda sakti street, Tapung, Kampar, Riau has been implemented since November 2019 to March 2020. This study aims to determine magnetic susceptibility, mass susceptibility, magnetic degree and to identify soil compositions and the content of heavy metals in the soils and to analyse the influence of content of heavy metals to the magnetic susceptibility. The samples were taken about one hundred points, then the samples were dried, cleaned, mashed and sifted. Magnetic susceptibility was measured using the Probe Magnetic Pasco PS-2162. Magnetic particles were separated from samples using the NdFeB magnet and identification of soil composition and the content of heavy metals were carried out using the XRF. The result shows that the value of magnetic susceptibility, mass susceptibility, magnetic degree are fluctuated and the compositon of the soils are Mg, Al, Si, P, K, Fe, Ca, Ti, V, Cr, Mn, Ni, Zn S, Cl, Co, Cu, Ga, Ge, As, Br, Rb, Sr, Y, Zr, Nb, Ag, Eu, Re and Pb and proved that soil has been contaminated by heavy metals such as V, Cr, Al, Fe, Ti and Sr from the soils until increase the Magnetic susceptibility of that soils.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122344600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-30DOI: 10.31258/JKFI.17.2.55-61
Ochtavia Lutfi, Z. Zulkarnain
The learning process of goodness and organized teaching staff is highly prioritized to achieve the competencies expected to all students. Ineffective delivery due to time constraints, especially in science lessons causes the learning process run unwell. Besides the discomfort in learning is also an important problem in every teaching and learning process. Often students feel bored with the material delivered too monotonous and make students not pay attention to the teacher during studying. A new method of providing additional assignments at the end of each meeting is carried out in this study to obtain a change in students' interest in learning well. This study has two cycles with stages of planning, action, observation, reflection, and the end of the action. Direct observation is applied to this research method. The results showed that the first cycle had an increase in interest in learning from pre-cycle 33.33% to 50% with 20 students who had reached the minimum threshold (KKM) and 12 students who had not either. Increased interest in learning with very good criteria occurred in the second cycle with a percentage of 83.33% in which 31 students reached the KKM and 1 student was not.
{"title":"INVESTIGASI PENGARUH PENAMBAHAN TUGAS TERHADAP HASIL BELAJAR SISWA: TEMUAN DI SMP NEGERI 1 LEWA KELAS VII","authors":"Ochtavia Lutfi, Z. Zulkarnain","doi":"10.31258/JKFI.17.2.55-61","DOIUrl":"https://doi.org/10.31258/JKFI.17.2.55-61","url":null,"abstract":"The learning process of goodness and organized teaching staff is highly prioritized to achieve the competencies expected to all students. Ineffective delivery due to time constraints, especially in science lessons causes the learning process run unwell. Besides the discomfort in learning is also an important problem in every teaching and learning process. Often students feel bored with the material delivered too monotonous and make students not pay attention to the teacher during studying. A new method of providing additional assignments at the end of each meeting is carried out in this study to obtain a change in students' interest in learning well. This study has two cycles with stages of planning, action, observation, reflection, and the end of the action. Direct observation is applied to this research method. The results showed that the first cycle had an increase in interest in learning from pre-cycle 33.33% to 50% with 20 students who had reached the minimum threshold (KKM) and 12 students who had not either. Increased interest in learning with very good criteria occurred in the second cycle with a percentage of 83.33% in which 31 students reached the KKM and 1 student was not.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116656060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-30DOI: 10.31258/JKFI.17.2.104-107
Hazelina Adzani, A. S. Rini
Synthesis of silver nanoparticles was carried out by a reduction method using yellow watermelon rind extract. Variation of sample on this synthesis was doing with ratio volume extract and ag, i.e., 1:3 and 3:1. This synthesis has been successfully carried out using 1M NaOH as a stabilizer. The formation and stability of silver nanoparticles was observed through Uv-vis absorbance spectrum. The results of the analysis using Uv-Vis spectroscopy show the formation of silver nanoparticles at wavelengths of 440-446 nm with absorbance values of 0.8356 a.u and 1.0458 a.u respectively. The FTIR analysis showed the existence of a polyphenol group functional with a range of wave numbers 601.82-3359.18 cm-1. This result concludes that yellow watermelon rind extract is involved in reducing Ag+ to Ag0.
{"title":"SIFAT OPTIK NANOPARTIKEL PERAK (Ag-NPs) MENGGUNAKAN BIOREDUKTOR EKSTRAK KULIT SEMANGKA KUNING","authors":"Hazelina Adzani, A. S. Rini","doi":"10.31258/JKFI.17.2.104-107","DOIUrl":"https://doi.org/10.31258/JKFI.17.2.104-107","url":null,"abstract":"Synthesis of silver nanoparticles was carried out by a reduction method using yellow watermelon rind extract. Variation of sample on this synthesis was doing with ratio volume extract and ag, i.e., 1:3 and 3:1. This synthesis has been successfully carried out using 1M NaOH as a stabilizer. The formation and stability of silver nanoparticles was observed through Uv-vis absorbance spectrum. The results of the analysis using Uv-Vis spectroscopy show the formation of silver nanoparticles at wavelengths of 440-446 nm with absorbance values of 0.8356 a.u and 1.0458 a.u respectively. The FTIR analysis showed the existence of a polyphenol group functional with a range of wave numbers 601.82-3359.18 cm-1. This result concludes that yellow watermelon rind extract is involved in reducing Ag+ to Ag0.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130284591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-30DOI: 10.31258/JKFI.17.2.92-96
William Handerson, Salomo Sinuraya
Research on the Analysis of Magnetic Properties and Content Identification of kampar River Sand Riau Province has been carried out. Sand samples taken in the Kampar River were then taken to University of Riau instrumentation and magnetization laboratory to dry first, after which magnetic mineral separation was carried out using an Iron Sand Separator (ISS) . The next sample was measured its magnetic induction value using 2500 winding solenoids with currents (200, 400, 600, 800, 1000) mA with a fixed distance of 1 mm. The results showed that the magnetic susceptibility value for sand samples at point C was the highest value followed by the location of point B and point A with successive values of 13,767.96 x , 8,508.48 x , and 8.008.10 x , and this value is included in the anti-ferromagnetic ilminite (FeTiO3) interval with a range of values (220-380000) x , . The results of the mass susceptibility value for the concentrate show that sand at the location of point C is the highest value followed by locations of points B and A with values of 13,969.70 x . 9,482.71 x . and 6,441.25 x ., and this value is included in the inter ferromagnetic FeTiO3 ilminite interval with a range of values (46-8000 ) x .. X-Ray Fluorescence (XRF) test results for the Fe element have increased after ISS. Sand which is at point B has a greater percentage, followed by the locations of points A and C with values respectively 17.265%, 11.386% and 10.952%.
{"title":"ANALISA SIFAT MAGNETIK DAN IDENTIFIKASI KANDUNGAN PASIR SUNGAI KAMPAR PROVINSI RIAU","authors":"William Handerson, Salomo Sinuraya","doi":"10.31258/JKFI.17.2.92-96","DOIUrl":"https://doi.org/10.31258/JKFI.17.2.92-96","url":null,"abstract":"Research on the Analysis of Magnetic Properties and Content Identification of kampar River Sand Riau Province has been carried out. Sand samples taken in the Kampar River were then taken to University of Riau instrumentation and magnetization laboratory to dry first, after which magnetic mineral separation was carried out using an Iron Sand Separator (ISS) . The next sample was measured its magnetic induction value using 2500 winding solenoids with currents (200, 400, 600, 800, 1000) mA with a fixed distance of 1 mm. The results showed that the magnetic susceptibility value for sand samples at point C was the highest value followed by the location of point B and point A with successive values of 13,767.96 x , 8,508.48 x , and 8.008.10 x , and this value is included in the anti-ferromagnetic ilminite (FeTiO3) interval with a range of values (220-380000) x , . The results of the mass susceptibility value for the concentrate show that sand at the location of point C is the highest value followed by locations of points B and A with values of 13,969.70 x . 9,482.71 x . and 6,441.25 x ., and this value is included in the inter ferromagnetic FeTiO3 ilminite interval with a range of values (46-8000 ) x .. X-Ray Fluorescence (XRF) test results for the Fe element have increased after ISS. Sand which is at point B has a greater percentage, followed by the locations of points A and C with values respectively 17.265%, 11.386% and 10.952%.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123196428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-31DOI: 10.31258/jkfi.17.1.50-54
Afrita Ariani, Usman Malik, Asnawi Husin
Total elektron contant in ionosphere is affected by several fastors, local time, solar aktivities, geomagnetic disturbance, geographical latitude and longitude. This researh aims to observase level variation of total electron contant during solar eclipse over Indonesia on 9 March 2016. We analyzed GPS data from two GPS stations in different locations with different sun observation geographical latitude and longitude, the locations were Sulawesi station (CAMP) and Maluku station (CAMB). The method used in this research, was data interpretation method computationally, the whole data analyzed using matlab software R2008a. The values of daily TEC range from 20 TECU till 30 TECU. Although the value of TEC when solar total eclipse range from 10n TECU untill 20 TECU. The percentage of decreasing value of TEC when total solar eclipse than the daily value of TEC. Decreasing of TEC value between 20%-40%.
{"title":"ANALISIS EFEK GERHANA MATAHARI TOTAL 9 MARET 2016 TERHADAP KANDUNGAN TOTAL ELEKTRON IONOSFER","authors":"Afrita Ariani, Usman Malik, Asnawi Husin","doi":"10.31258/jkfi.17.1.50-54","DOIUrl":"https://doi.org/10.31258/jkfi.17.1.50-54","url":null,"abstract":"Total elektron contant in ionosphere is affected by several fastors, local time, solar aktivities, geomagnetic disturbance, geographical latitude and longitude. This researh aims to observase level variation of total electron contant during solar eclipse over Indonesia on 9 March 2016. We analyzed GPS data from two GPS stations in different locations with different sun observation geographical latitude and longitude, the locations were Sulawesi station (CAMP) and Maluku station (CAMB). The method used in this research, was data interpretation method computationally, the whole data analyzed using matlab software R2008a. The values of daily TEC range from 20 TECU till 30 TECU. Although the value of TEC when solar total eclipse range from 10n TECU untill 20 TECU. The percentage of decreasing value of TEC when total solar eclipse than the daily value of TEC. Decreasing of TEC value between 20%-40%.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129470163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-26DOI: 10.31258/jkfi.17.1.19-23
Irma Novalia, E. Erwin
Magnetic Susceptibility measurements and the identification of elements of iron sand from Arta beach of Pariaman West Sumatera have been done. The samples were dried first under the sun before the separation between magnetic particles of iron sand and non-magnetic particles using Iron Sand Separator. Identification elements of iron sand was done using X-Ray Fluorescence. The total value of magnetic induction was measured using a magnetic Pasco probe PS-2162 using a solenoid 2000 coils turns, dimensions of 3 cm in diameter and 10 cm in length. The solenoid was given an electric current with variations ranging from 2 A – 8 A. The distance between magnetic probe and one end of solenoid was kept constant that was 1 mm. The next experiment was to measure the function of distance ranging from 1 – 5 mm with constant applied current of 8 A. When electric current increase then the total magnetic induction also increase. Total magnetic induction value decreases as the distance increases. Magnetic susceptibility was calculated based on total magnetic induction and magnetic induction of core currents with constant current of 8 A and distance of 1 mm. The value of magnetic susceptibility obtained in the range (2164,71-3159,99)x10-5 which consist of ilmenite mineral (FeTiO3; Antiferromagnetic).Keywords : iron sand, magnetic suseptibility, iron sand separator, solenoid, magnetic induction, and x-ray fluorescence.
{"title":"KAJIAN SUSEPTIBILITAS MAGNETIK PASIR BESI PANTAI ARTA SEBAGAI FUNGSI JARAK DARI TEPI LAUT","authors":"Irma Novalia, E. Erwin","doi":"10.31258/jkfi.17.1.19-23","DOIUrl":"https://doi.org/10.31258/jkfi.17.1.19-23","url":null,"abstract":"Magnetic Susceptibility measurements and the identification of elements of iron sand from Arta beach of Pariaman West Sumatera have been done. The samples were dried first under the sun before the separation between magnetic particles of iron sand and non-magnetic particles using Iron Sand Separator. Identification elements of iron sand was done using X-Ray Fluorescence. The total value of magnetic induction was measured using a magnetic Pasco probe PS-2162 using a solenoid 2000 coils turns, dimensions of 3 cm in diameter and 10 cm in length. The solenoid was given an electric current with variations ranging from 2 A – 8 A. The distance between magnetic probe and one end of solenoid was kept constant that was 1 mm. The next experiment was to measure the function of distance ranging from 1 – 5 mm with constant applied current of 8 A. When electric current increase then the total magnetic induction also increase. Total magnetic induction value decreases as the distance increases. Magnetic susceptibility was calculated based on total magnetic induction and magnetic induction of core currents with constant current of 8 A and distance of 1 mm. The value of magnetic susceptibility obtained in the range (2164,71-3159,99)x10-5 which consist of ilmenite mineral (FeTiO3; Antiferromagnetic).Keywords : iron sand, magnetic suseptibility, iron sand separator, solenoid, magnetic induction, and x-ray fluorescence.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131920214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-26DOI: 10.31258/jkfi.17.1.14-18
Ayu Wulandhari, E. Erwin
Telah dilakukan penelitian tentang sifat magnetik dan ukuran partikel dari pasir besi pantai Arta Pariaman Sumatera Barat menggunakan metode Ball Milling. Sampel pasir besi dipisahkan menggunakan Iron Sand Separator (ISS) sebelum dilakukannya proses penghancuran menggunakan Ball Milling dengan variasi waktu 30 jam, 60 jam, dan 90 jam, kemudian dilakukan Ball Milling lanjutan selama 30 jam pada sampel hasil Ball Milling 90 jam dengan ukuran bola yang diperkecil sebesar 0,6 cm. Untuk pemisahan antara partikel magnetik dan non-magnetik pada hasil Ball Milling menggunakan magnet batang Niodinium Iron Boron (NdFeB). Sifat magnetik seperti suseptibilitas magnetik dan suseptibilitas massa dapat diketahui dengan menggunakan sensor Pasco Magnetic Probe PS-2162 dengan kumparan solenoid 2000 lilitan, panjang 10 cm, dan diameter 3 cm, sedangkan komposisi dari pasir besi menggunakan X-Ray Fluorescence (XRF). Ukuran dan bentuk partikel magnetik ditentukan dengan Scanning Electtron Microscope (SEM). Dari penelitian ini hasil ukuran partikel yang didapat sebesar 935 nm untuk waktu Ball Milling 90 jam dan ukuran dalam rentang sebesar 519 nm untuk waktu Ball Milling 120 jam/90 jam + 30 jam, Bentuk partikel pasir besi hampir bulat untuk masing-masing waktu Ball Milling. Kandungan pasir besi sebelum dan sesudah di Ball Milling selama 120 jam yaitu 6,118% dan 67,746%. Suseptibilitas massa meningkat dari 27955,7 X 10-8 m3/kg menjadi 31478,5 X 10-8 m3/kg . Nilai ini berada dalam interval mineral Ilminite (46-80000) X 10-8 m3/kg .
{"title":"PENENTUAN SIFAT MAGNETIK DAN MORFOLOGI PARTIKEL MAGNETIK PASIR BESI PANTAI ARTA PARIAMAN SUMATERA BARAT","authors":"Ayu Wulandhari, E. Erwin","doi":"10.31258/jkfi.17.1.14-18","DOIUrl":"https://doi.org/10.31258/jkfi.17.1.14-18","url":null,"abstract":"Telah dilakukan penelitian tentang sifat magnetik dan ukuran partikel dari pasir besi pantai Arta Pariaman Sumatera Barat menggunakan metode Ball Milling. Sampel pasir besi dipisahkan menggunakan Iron Sand Separator (ISS) sebelum dilakukannya proses penghancuran menggunakan Ball Milling dengan variasi waktu 30 jam, 60 jam, dan 90 jam, kemudian dilakukan Ball Milling lanjutan selama 30 jam pada sampel hasil Ball Milling 90 jam dengan ukuran bola yang diperkecil sebesar 0,6 cm. Untuk pemisahan antara partikel magnetik dan non-magnetik pada hasil Ball Milling menggunakan magnet batang Niodinium Iron Boron (NdFeB). Sifat magnetik seperti suseptibilitas magnetik dan suseptibilitas massa dapat diketahui dengan menggunakan sensor Pasco Magnetic Probe PS-2162 dengan kumparan solenoid 2000 lilitan, panjang 10 cm, dan diameter 3 cm, sedangkan komposisi dari pasir besi menggunakan X-Ray Fluorescence (XRF). Ukuran dan bentuk partikel magnetik ditentukan dengan Scanning Electtron Microscope (SEM). Dari penelitian ini hasil ukuran partikel yang didapat sebesar 935 nm untuk waktu Ball Milling 90 jam dan ukuran dalam rentang sebesar 519 nm untuk waktu Ball Milling 120 jam/90 jam + 30 jam, Bentuk partikel pasir besi hampir bulat untuk masing-masing waktu Ball Milling. Kandungan pasir besi sebelum dan sesudah di Ball Milling selama 120 jam yaitu 6,118% dan 67,746%. Suseptibilitas massa meningkat dari 27955,7 X 10-8 m3/kg menjadi 31478,5 X 10-8 m3/kg . Nilai ini berada dalam interval mineral Ilminite (46-80000) X 10-8 m3/kg .","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130480903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-31DOI: 10.31258/jkfi.16.2.103-106
Andris Saputra, Wahyu Candra, Y. Soerbakti, Romi Fadli Syahputra, Defrianto Defrianto, Saktioto Saktioto
Maturity progress of palm fruit is greatly depending on the availability of nutrients and environments. Determining maturity level of palm fruit is important to evaluate the quality of palm oil fruits. The younger or too mature fruits will produce poor quality of crude palm oil (CPO). An appropriate devices are needed that can measure the level of fruit maturity so that uniformity of maturity grade can be carried out to obtain high quality CPO. This research provides a preliminary study of voltage change on the surface of oil palm seeds which subjected by electric potential. The low directional voltage (DC) injection treatment, ~ 10V, was applied to investigate the impact of applied voltage on palm oil seeds with three different levels of maturity, i.e. immature (young), ripe and over ripe . The results shown that oil palm fruit quite quickly responds to injection of DC applied voltage with different responding voltage. This responding voltage tends to increase with increasing maturity levels, but decreases for over ripe fruit which has falling down and starting to dry out.
{"title":"STUDI AWAL GRADING BUAH SAWIT DENGAN BANTUAN INJEKSI TEGANGAN LISTRIK SEARAH","authors":"Andris Saputra, Wahyu Candra, Y. Soerbakti, Romi Fadli Syahputra, Defrianto Defrianto, Saktioto Saktioto","doi":"10.31258/jkfi.16.2.103-106","DOIUrl":"https://doi.org/10.31258/jkfi.16.2.103-106","url":null,"abstract":"Maturity progress of palm fruit is greatly depending on the availability of nutrients and environments. Determining maturity level of palm fruit is important to evaluate the quality of palm oil fruits. The younger or too mature fruits will produce poor quality of crude palm oil (CPO). An appropriate devices are needed that can measure the level of fruit maturity so that uniformity of maturity grade can be carried out to obtain high quality CPO. This research provides a preliminary study of voltage change on the surface of oil palm seeds which subjected by electric potential. The low directional voltage (DC) injection treatment, ~ 10V, was applied to investigate the impact of applied voltage on palm oil seeds with three different levels of maturity, i.e. immature (young), ripe and over ripe . The results shown that oil palm fruit quite quickly responds to injection of DC applied voltage with different responding voltage. This responding voltage tends to increase with increasing maturity levels, but decreases for over ripe fruit which has falling down and starting to dry out. ","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129634757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-31DOI: 10.31258/jkfi.16.2.149-154
Mailestari Wina Yance, M. Minarni, Feri Candra, H. Herman
Hyperspectral images are three dimensional images which have two dimension spatial information and one dimension spectral information. Hyperspectral image processing using Matlab program is preferable because it is more adaptive for many analysis purposes. This research was aimed to construct Matlab to process and analyze the hyperspectral images of the roots of oil palm plants that have experienced water deficiency. The program was designed and constructed using a GUI . The use of a GUI aims to combine each pixel of the same line from each sample to produce a new image. The samples were roots of oil palm plants that experienced simulated water deficiency by giving different water volumes of 0 mL, 1000 mL, 2000 mL and 3000 mL (normal). The optical method used in this study is a hyperspectral imaging method which has 650 nm diode laser as the light source , spectrograph Specim Imspector V10 , and a monochrome CMOS as a detector. Reflectance intensity versus wavelength was extracted from each images and analyzed. The results showed that the Matlab GUI program that had been constructed was able to produce 1024 new images that had a pixel size of 15× 1280 from each sample. The results also show that the reflectance intensity values are higher at higher water deficiency of the oil palm roots.
{"title":"APLIKASI PROGRAM MATLAB UNTUK ANALISA CITRA HYPERSPECTRAL PADA AKAR DARI TANAMAN KELAPA SAWIT YANG MENGALAMI KEKURANGAN AIR","authors":"Mailestari Wina Yance, M. Minarni, Feri Candra, H. Herman","doi":"10.31258/jkfi.16.2.149-154","DOIUrl":"https://doi.org/10.31258/jkfi.16.2.149-154","url":null,"abstract":"Hyperspectral images are three dimensional images which have two dimension spatial information and one dimension spectral information. Hyperspectral image processing using Matlab program is preferable because it is more adaptive for many analysis purposes. This research was aimed to construct Matlab to process and analyze the hyperspectral images of the roots of oil palm plants that have experienced water deficiency. The program was designed and constructed using a GUI . The use of a GUI aims to combine each pixel of the same line from each sample to produce a new image. The samples were roots of oil palm plants that experienced simulated water deficiency by giving different water volumes of 0 mL, 1000 mL, 2000 mL and 3000 mL (normal). The optical method used in this study is a hyperspectral imaging method which has 650 nm diode laser as the light source , spectrograph Specim Imspector V10 , and a monochrome CMOS as a detector. Reflectance intensity versus wavelength was extracted from each images and analyzed. The results showed that the Matlab GUI program that had been constructed was able to produce 1024 new images that had a pixel size of 15× 1280 from each sample. The results also show that the reflectance intensity values are higher at higher water deficiency of the oil palm roots.","PeriodicalId":403286,"journal":{"name":"Komunikasi Fisika Indonesia","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126254398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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