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All Journal Journal of Aceh Physics Society Journal of Physics: Theories and Applications INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Ilmu Fisika Jurnal Teori dan Aplikasi Fisika Relativitas : Jurnal Riset Inovasi Pembelajaran Fisika Journal of Applied Agricultural Science and Technology Jurnal Natural Teknologi dan Industri Pertanian Indonesia PESARE: Science and Engineering Service Journal
Evi Yufita
Jurusan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Syiah Kuala Jl. Syekh Abdul Rauf, Darussalam, Banda Aceh 23111, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Neuroscience Physics Public Health Social Sciences

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Journal : Journal of Aceh Physics Society

 1   2 
The Effect of Sintering Time on Surface Morfology of Pb-Doped Bi-2223 Oxides Superconductors Prepared by the Solid State Reaction Methods at 840 oC Yufita, Evi; ., Nurmalita
Journal of Aceh Physics Society Volume 5 2016
Publisher : Aceh Physics Society

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Abstract

This study was investigating the effect of sintering time (30 h, 32 h, and 34 h) on surface morphology of Pb-doped Bi-2223 oxides of superconductors prepared by the solid-state reaction method at 840 oC. The superconductor was characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM).  In the present study, phase purity, volume fraction, surface morphology, texturing, crystallinity, grain connectivity and grain size of the bulk samples are found and compared with each other. The enhancement in the sintering time is confirmed that it will decrease Bi-2223 phase fraction and increase the impurity of the samples. SEM images shows that the sample has the best crystallinity, grain connectivity and largest grain size. Based on the present results, it is conclude that the surface morphological is improving with the increasing of the sintering time.
Mineral Identification of Adhesive Material using XRD for Ancient Fortress Located at Aceh Besar Nurul Fitri; Elin Yusibani; Evi Yufita
Journal of Aceh Physics Society Volume 6 Number 2, September 2017
Publisher : PSI-Aceh

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Studi lanjut kandungan material perekat pada tiga benteng purba di kawasan Aceh Besar, yaitu Benteng Indrapatra (BIP), Benteng Inong Balee (BIB), dan Benteng Kuta Lubok (BKL) telah dilakukan menggunakan X-Ray Diffraction (XRD). Tujuan dari penelitian ini adalah untuk mengetahui jenis mineral yang terkandung di dalam material perekat pada benteng purba tersebut. Identifikasi awal menggunakan XRF menunjukkan bahwa unsur yang paling dominan yang terkandung dalam material perekat benteng purba di kawasan Aceh Besar adalah unsur kalsium dan diduga sebagai unsur penyusun dari senyawa batu kapur. Hal ini didapatkan berdasarkan pencocokan dengan komponen penyusun batu kapur dari lima daerah yang berbeda di Sumatra. Hasil uji XRD diperoleh mendukung hasil XRF sebelumnya bahwa benteng purba di kawasan Aceh Besar menggunakan material perekat dari batu kapur yang berjenis Kalsit (CaCO3). Study about adhesive material in the three ancient fortress at Aceh Besar, namely Fortress Indra patra (BIP), Inong Balee (BIB), and Kuta Lubok (BKL) has been done using X-Ray Diffraction (XRD). Preliminary study has been done by investigating the compound material on adhesive material use XRF indicate that the major elements in the adhesive material forts in Aceh Besar is Calcium. This element of Calcium suspected as the composer of limestone, it is based on matching with the composition of limestone from five different areas in Sumatra. The result of XRD in consistent with the result of XRF that ancient fort in Aceh Besar district uses an adhesive material of Calcite (CaCO3). Keywords: Benteng purba, material perekat, X-Ray Diffraction (XRD), batu kapur Kalsit (CaCO3).
Heat Energy of Candlenut Shell and Tamarind Skin Briquet with Variation on Particle Size and Pressure Pressing Cut Dewi Afriani; Evi Yufita; Nurmalita Nurmalita
Journal of Aceh Physics Society Volume 6 Number 1, March 2017
Publisher : PSI-Aceh

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Abstract

Pemanfaatan limbah dari hasil perkebunan dapat digunakankan untuk pembuatan briket bioarang yang energinya dapat diperoleh sebagi energi alternatif. Pada penelitian ini dilakukan pembuatan briket bioarang campuran antara limbah tempurung kemiri dan kulit asam jawa dengan memvariasikan tekanan pengepresan (4 ton, 5 ton, 6 ton) dan ukuran partikel dari cangkang kemiri (20 mesh, 40 mesh, 60 mesh) untuk mengetahui kualitas briket yang dihasilkan. Hasil penelitian menunjukkan bawa nilai kalor briket bioarang tertinggi berada pada tekanan pengepresan 6 ton dengan ukuran butir 60 mesh sebesar 3350 kal dengan porositas sebesar 5,58 % dan kadar air sebesar 7,6 %. Farm waste utilization can be done by making a briquet as an alternative energy. In this research mixture of waste candlenut shell and tamarind skin as a briquet is studied by varying the pressure pressing (4 tons, 5 tons, 6 tons) and grain size of the candlenut shell (20 mesh, 40 mesh, 60 mesh) to determine the quality of briquettes resulting from. The results show that the highest heat energy of briquet currently on the pressing pressure of 6 tons with a grain size of 60 mesh at 3350 cal with a porosity of 5.58% and a water content of 7.6%. Keywords: briket bioarang, tempurung kemiri, kulit asam jawa, tekanan pengepresan, ukuran butir
The Effect of Sintering Time on Surface Morfology of Pb-Doped Bi-2223 Oxides Superconductors Prepared by the Solid State Reaction Methods at 840 oC Evi Yufita; Nurmalita .
Journal of Aceh Physics Society Volume 5 Number 1, March 2016
Publisher : PSI-Aceh

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Abstract

This study was investigating the effect of sintering time (30 h, 32 h, and 34 h) on surface morphology of PbdopedBi-2223 oxides of superconductors prepared by the solid-state reaction method at 840 oC. Thesuperconductor was characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM).In the present study, phase purity, volume fraction, surface morphology, texturing, crystallinity, grainconnectivity and grain size of the bulk samples are found and compared with each other. The enhancementin the sintering time is confirmed that it will decrease Bi-2223 phase fraction and increase the impurity ofthe samples. SEM images shows that the sample has the best crystallinity, grain connectivity and largestgrain size. Based on the present results, it is conclude that the surface morphological is improving with theincreasing of the sintering time.
Study of Water Chemical Compounds at Geothermal Area: Case on Geothermal Weh Island, Jaboi Evi Yufita; Muhammad Isa; Aztarina Ermy Vijaya
Journal of Aceh Physics Society Volume 9, Number 1, January 2020
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v9i1.15229

Abstract

Kandungan senyawa kimia air sangat berguna dalam penentuan karakteristik fluida panas bumi terutama sumbernya dan arah aliran fluida tersebut. Oleh karena itu dilakukan penelitian untuk mengkaji senyawa kimia air yang terkandung pada lapangan panas bumi. Penelitian ini dilakukan dengan metode Titrasi dan Spektrofotometer Serapan Atom (SSA). Pengambilan sampel air dilakukan di dua lokasi mata air panas. Untuk pengujian sampel dilakukan pada Balai Riset dan Standarisasi (Baristan) Banda Aceh. Pengolahan data dilakukan dengan perbandingan kandungan kimia air, sedangkan interpretasi menggunakan diagram segitiga Ternary. Diagram segitiga ini meliputi Cl-SO4-HCO3, digunakan untuk mengetahui kandungan fuida panas bumi, Cl-Li-B digunakan untuk menentukan temperatur suatu lokasi panasbumi dan Na-K-Mg untuk mengetahui kesetimbangan lingkungan fluida panas bumi. Hasil analisis senyawa kimia air menunjukkan bahwa fluida panas bumi memiliki konsentrasi yang didominasi sulfat SO4,  Adapun nilai konsentrasi sulfat masing-masing 95% sampel I dan 97% sampel II. Kandungan kimia air ini diperkirakan berada pada zona upflow. Fluida panas bumi yang muncul ke permukaan dari dua lokasi sampel bersumber langsung dari aktivitas magma. An analysis of the flow of geothermal fluid has been carried out in the Jaboi geothermal field, Sabang. This study aims to obtain a zone of geothermal fluid flow in relation to faults/faults. This research was conducted by the titration method and Atomic Absorption Spectrophotometer (AAS). Sampling was carried out at two hot spring locations, namely crater I and crater IV. For sample testing carried out in a standardized laboratory. Data processing is done through comparison of chemical fluid content and interpretation of Ternary triangle diagrams. The triangle diagram includes Cl-SO4-HCO3, Cl-Li-B and Na-K-Mg to determine the characteristics of geothermal fluids. Based on data that has been processed and correlated with other supporting data (local geological conditions, magnetic, and temperature) shows a relationship that affects each other with the presence of faults. The analysis shows that geothermal fluid in the upflow zone is characterized by a dominant SO4 sulfate concentration (95% for sample I and 97% for sample II). In the Na-K-Mg triangle diagram, the fluid shows an immature water condition because the fluid has mixed with meteoric water. Based on the analysis of the geochemical data of the study area, it was shown that there is a connection with Ceunohot fault trending northeast to southwest as the controller of the flow of geothermal fluid.Keywords: Ternary triangle diagrams, geothermal fluid, chemical water compounds
Study of Viscosity Measurement by Curved Vibrating Wire Method Saudiah Mawaddah; Elin Yusibani; Evi Yufita
Journal of Aceh Physics Society Volume 4 Number 1, March 2015
Publisher : PSI-Aceh

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Abstract

A simple and compact sensor has been designed for measuring a viscosity of a fluid. The sensor consists of a magnet and a curved thin wire made of copper. The function generator supplies a frequency and the voltage output was reading by the lock-in amplifier. The measuring voltages were analyzed by the curve fitting method numerically.
Control of Corrosion Rate on A36 Black Plate Steel in Corrosive Medium Using Salam Leaf Extract Inhibitor Evi Yufita; Desy Fitriana; Zulfalina Zulfalina
Journal of Aceh Physics Society Volume 7, Number 2, May 2018
Publisher : PSI-Aceh

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Pemanfaatan inhibitor organik untuk mengurangi laju korosi pada logam telah banyak diteliti karena ramah lingkungan dibandingkan dengan inhibitor anorganik. Dalam penelitian ini, ekstrak daun salam (Eugenia Polyantha (Wight.)Walp.) digunakan sebagai inhibitor untuk menghambat laju korosi pada baja plat hitam A36. Ekstrak daun salam digunakan sebagai inhibitor karena mengandung senyawa tannin dan flavonoid yang dapat menghambat laju korosi. Tujuan penelitian ini untuk mengetahui pengaruh dan efisiensi penambahan variasi volume inhibitor tersebut dalam medium korosif NaCl 3 % terhadap laju korosi pada baja plat hitam A36. Metode yang digunakan adalah kehilangan berat. Sampel direndam dalam larutan korosif yang dicampurkan dengan inhibitor. Dari hasil peneliti menunjukkan bahwa ekstrak daun salam mampu menghambat laju korosi. Nilai laju korosi terendah dan efisiensi tertinggi pada penambahan volume inhibitor 16 ml, masing-masing sebesar 0,0003 cm/tahun dan 99,80%. Organic inhibitors ultilization to reduce corrotion rate on metal have been widely studied due to more enfironmentally frendly compare to inorganic material. In this study, the extract of salam leaf (Eugenia Polyantha (Wight.) Walp.) was used as an inhibitor to reduce the corrosion rate on A36 black plate steel. Salam leaf extract is used as an inhibitor because it contains tannin and flavonoid compounds that can inhibit corrosion rate. The purpose of this study was to determine the effect and efficiency of adding variation of the inhibitor volume in a corrosive medium of 3% NaCl to the corrosion rate on A36 black plate steel. The method used is weight loss. The sample was immersed in a corrosive solution mixed with the inhibitor. From the results of the research show that the extract of Salam leaf can reduce corrosion rate. The lowest corrosion rate value and the highest efficiency at the addition of 16 ml inhibitor volume are 0.0003 cm/year and 99.80%, respectively. Keywords: Flavonoid, Inhibitor Effeciency, NaCl, Salam Leaf Extract, Tannin, Weight LossDaftar Pustaka Cicek, Volkan. 2014. Corrosion engeneering. Wiley. United State of America.Fatriah, Zulfalina, Evi yufita.2017.Pengaruh ekstrak daun trembesi sebagai inhibitor terhadap laju korosi pada baja plat hitam A36. J.Aceh Phys.Soc Vol.6, No.2 pp. 52-56. Jurusan Fisika Fakultas Matematika Ilmu Pengetahuan Alam Universitas Syiah Kuala.Indah wahyuutami. 2008. Efekfraksi air ekstrak etanol dalam daun salam terhadap penurunan kadar asam urat pada mancit putih jantang alurbalb-c yang di induksi dengan kalium oksonat. Skripsi. Universitas Muhammadiyah Surakarta.Rozanna Sri Irianty dan Khairat, 2013, Ekstrak Daun Pepaya sebagai Inhibitor Korosi pada Baja AISI 4041 dalam Medium Air Laut, Jurnal Teknobiologi, volume IV (2), RiauSupardi, Rahmat. 1997. Korosi. Tarsito. Bandung.Sari, M,D., Handani,S., Yetri,Y. 2013. Pengendalian laju korosi Baja St-37 dalam medium asam klorida dan natrium klorida menggunakan inhibitor ekstrak daun teh. Jurnal Fisika Fakultas MIPA. Vol.2 No.3. Universitas Andalas Padang.Yonna Ludiana dan Sri Handani, (2012). Pengaruh konsentrasi inhibitor ekstrak daunteh (Camelia Sinensis) terhadap laju korosi baja karbon schedule 40 grade BERW. Jurnal Fisika volume 1 No. 1 Universitas Andalas Padang.
The Potential of Red Dragon Fruit Skin (Hylocereanea Polyrhizus) as a Corrosion Inhibitor Beti Nanda Sari; Evi Yufita; Zulfalina Zulfalina
Journal of Aceh Physics Society Volume 8, Number 1, January 2019
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (591.514 KB) | DOI: 10.24815/jacps.v8i1.12787

Abstract

Penelitian tentang pengaruh ekstrak kulit buah naga merah (Hylocereus Polyrhizus) sebagai bahan inhibitor terhadap laju korosi baja plat hitam (Base Plate) A36 dengan menggunakan metode weight loss telah dilakukan. Kulit buah naga merah berpotensi sebagai bahan inhibitor organik karena mengandung senyawa antioksidan diantaranya flavonoid dan tanin. Penelitian ini bertujuan untuk mengetahui pengaruh variasi volume larutan inhibitor yaitu 10, 20 dan 30 ml terhadap perubahan massa sampel, selain itu juga ingin mengetahui pengaruh variasi volume larutan inhibitor terhadap nilai laju korosi dan efesiensi inhibisi pada sampel baja A36. Berdasarkan hasil penelitian, perubahan massa didapat dari selisih massa sebelum dan sesudah perendaman dalam larutan inhibitor, nilai perubahan massa maksimum pada volume 30 ml yaitu sebesar 0,073 g. Nilai laju korosi relatif untuk sampel yang dilapisi inhibitor akan semakin menurun, pada volume 30 ml yaitu sebesar 0,001 cm/tahun dengan nilai efisiensi sebesar 98%. Research on the effect of red dragon fruit peel extract (Hylocereus Polyrhizus) as an inhibitor material on the corrosion rate of A36 black plate steel using weight loss method has been carried out. Red dragon fruit skin potential as an organic inhibitor that is containing antioxidant compounds include flavonoids and tannins. This study aims to determine the effect of variations in inhibitor solution volume for 10, 20 and 30 ml on changes in sample mass, the effect of variation in inhibitor solution volume on corrosion rate value and inhibitor efficiency of A36 steel samples is also studied. Based on the results of the study, changes in mass were obtained from the difference in mass before and after immersion in an inhibitor solution, the maximum mass change value at a volume of 30 ml is equal to 0.073 g, while the value of the corrosion rate is relatively decreasing. At a volume of 30 ml, the corrosion rate is equal to 0.001 cm/year with an efficiency value of 98%. Keywords: Korosi, Antioksidan, Kulit, Buah Naga Merah, efisiensi
Effect of Ceremai Leaf Extract (Phyllanthus acidus (L) Skeels) as Inhibitor Material on Corrosion Rate of Black Plate Steel (Base Plate) A36 Zulfalina Zulfalina; Nurrizka Nadia; Evi Yufita
Journal of Aceh Physics Society Volume 7, Number 2, May 2018
Publisher : PSI-Aceh

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Penelitian tentang pengaruh ekstrak daun ceremai (Phyllanthus acidus (L) Skeels) sebagai bahan inhibitor terhadap laju korosi baja plat hitam (Base Plate) A36 dengan menggunakan metode weight loss telah dilakukan. Penelitian ini bertujuan untuk menghitung nilai laju korosi sampel baja A36 dan efesiensi inhibitor dari ekstrak etanol daun ceremai. Pembuatan inhibitor dilakukan dengan mengekstrak daun ceremai menggunakan metode maserasi. Hasil ekstrak dicampurkan ke dalam medium korosif NaCl 3% dengan variasi ekstrak 4, 8, 12, 16 dan 20 ml, kemudian dilakukan perendaman sampel baja plat hitam A36 yang berukuran 3x1,5x0,114 cm. Berdasarkan hasil penelitian didapatkan nilai laju korosi minimum pada perendaman dalam medium korosif NaCl 3% yang ditambahkan 16 ml inhibitor dengan waktu perendaman 14 hari yaitu 0,0339 cm/tahun dengan nilai efisiensi sebesar 88%. The research about effect of ceremai leaf extract (phyllanthus acidus (l) skeels) as inhibitor material on corrosion rate of black plate steel (Base Plate) A36 by using weight loss method has been done. This study aims to calculate the value of corrosion rate of A36 black plate steel samples and the efficiency of inhibitors from ethanol extract of ceremai leaf. Making the inhibitor is done by extracting the leaves of the ceremai using the maceration method. The extract was mixed into corrosive medium of NaCl 3% with variation of 4, 8, 12, 16 and 20 ml, and then immersion of A36 black plate steel sample 3x1.5x0.114 cm. Based on the result of the research, the minimum corrosive rate on soaking in corrosive medium of NaCl 3% when added of 16 ml inhibitor with immersion time for 14 d that is 0,0339 cm/year, and the efficiency value equal to 88 %. Keywords: Corrosion, Corrosion Rate, Efficiency, NaClReferensiAli, Farida, dkk. 2014. Pengaruh Waktu Perendaman dan Konsentrasi Ekstrak Daun Jambu Biji (Psidium guajava, Linn) sebagai Inhibitor Terhadap Laju Korosi Baja SS 304 dalam Larutan Garam, Jurusan Teknik Kimia Fakultas Teknik Universitas SriwijjayaAsdim. 2007. Penentuan Efisiensi Inhibisi Ekstrak Kulit Buah Manggis (Garcinia mangostana L) pada Reaksi Korosi Baja dalam Larutan Asam. Jurnal Gradien. 3 (2) : 273-276.Cicek, volkan. 2014. Corrosion Engineering. Wiley. USA.Fatriah. 2016. Pengaruh Ekstrak Daun Trembesi (Samanea Saman (Jacq.) Merr.) Sebagai Bahan Inhibitor Terhadap Laju Korosi Baja Plat Hitam (Base Plate) A36. J. Aceh.Phys. Soc. Vol. 6, No. 2.Favre. 1993. The Influence of Gallic Acid on the Reduction of Rust on Painted Steel Surface. Journal Corrosion Science 43.1483-1492.Kayadoe, Victor dan Rachel Turalely. 2016. Ekstrak Daun Nipah sebagai Inhibitor Korosi Baja Ss-304 Dalam Larutan H2SO4. Prosiding Seminar Nasional Kimia dan Pembelajarannya, ISBN : 978-602-0951-12-6 Jurusan Kimia FMIPA Universitas Negeri Surabaya.Priest. D. 1992. Measuring Corrosion Rates Fast. J. Chemical Engineering, vol : 2 no. 1.Rieger. 1992. Electrochemistry, 2nd ed. Chapman and Hall Inc. New York.Setiawan, Dalimartha. 1999. Atlas Tumbuhan Obat Indonesia Jilid 1, Jakarta : Trubus Agriwidy
Identification of Adhesive Material Substance in Ancient Fortress Located at Aceh Besar using XRF Nurul Fitri; Elin Yusibani; Evi Yufita
Journal of Aceh Physics Society Volume 5 Number 2, September 2016
Publisher : PSI-Aceh

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Abstract

Penelitian ini bertujuan untuk menganalisa kandungan material perekat yang digunakan pada tiga benteng purba di kawasan Aceh Besar, yaitu Benteng Indrapatra (BIP), Benteng Inong Balee (BIB), dan Benteng Kuta Lubok (BKL). Analisa dilakukan menggunakan X-Ray Flourescence (XRF) dengan metode Fusion Beads. Hasil uji XRF menunjukkan bahwa ketiga benteng tersebut memiliki kandungan senyawa oksida yang sama, dengan persentase CaO sebanyak 46,16-51,37%, SiO2 sebanyak 2,56-6,68%, MgO sebanyak 1,01-2,16%, Al2O3sebanyak 0,73-1,18%, dan Fe2O3 sebanyak 0,53-0,70%. Senyawa-senyawa tersebut merupakan komposisi penyusun dari batu kapur jenis Kalsit. Hasil tersebut dibandingkan dengan material perekat yang digunakan saat ini (Semen) didapatkan memiliki komposisi yang berbeda. Semen mengandung komposisi oksida SiO2 dan SO3yang lebih besar daripada material perekat pada benteng purba yaitu sebesar 18% dan 3% untuk sampel sebanyak 1 gr. Preliminary study about adhesive material content in ancient fortress at Aceh Besar has been done. The fortress are Indrapatra, Inong Balee and Kuta Lubok. The sample is analyzed using X-Ray Flourescence (XRF) with Fusion Beads method. The result of XRF shows that all of the fortress have the same oxide compound which is CaO, with percentage of (46,16-51,37)%, SiO2 around (2,56-6,68)%, MgO around (1,01-2,16)%, Al2O3 around (0,73-1,18)%, and Fe2O3 around (0,53-0,70)%. The compounds are constituent of limestone of calcite. The results have been compared with the modern adhesive material (cement). It was found that cement has a different oxide composition with the adhesive material used in ancient fortress. Cement contains SiO2 and SO3 more than ancient adhesive material, the values are 18% and 3%, respectively, in one gram sample.
Co-Authors Aztarina Ermy Vijaya Beti Nanda Sari Cut Dewi Afriani Desy Fitriana Edwar Iswardy Elin Yusibani Endi Suhendi Faisal Abdullah Fasbir, Fasbir Fatriah Fatriah Fauzi . Fitriani Fitriani GUNAWATI, GUNAWATI Ikramullah ikramullah Lloyd Woodfield, Peter M Mursal Muhammad Ilham Noor Muhammad Ilham Nur Muhammad Isa Muhammad Shadiq Maula, Teuku Munzir Munzir Mursal, M Nurmalita . Nurmalita Nurmalita Nurrizka Nadia Nursabila Al Hazmi Nurul Fitri Nurul Fitri Rajibussalim Rajibussalim Rini Safitri Rini Safitri Saudiah Mawaddah Teuku Maimun Zulfalina . ZULFALINA ZULFALINA Zulfalina, Zulfalina Zulkarnain Jalil Zulkarnain Jalil Zuraini .