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All Journal Indonesian Journal of Electronics and Instrumentation Systems International Journal of Science and Engineering (IJSE) BERKALA FISIKA Jurnal Ilmiah Aplikasi Isotop Radiasi YOUNGSTER PHYSICS JOURNAL Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Ilmiah Arena Tekstil Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Physics and Its Applications Jurnal ULTIMA Computing Indonesian Journal of Electrical Engineering and Computer Science Journal of Energy, Material, and Instrumentation Technology
Zaenul Muhlisin
BDepartment Of Physics, Faculty Of Sciences And Mathematics, Diponegoro University, Semarang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics

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Journal : YOUNGSTER PHYSICS JOURNAL

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KARAKTERISASI PLASMA JET ARGON MENGGUNAKAN KOLOM DIELECTRIC BARRIER DISCHARGE (DBD) PADA TEKANAN ATMOSFER Andi Wibowo Kinandana; Muhammad Nur; Zaenul Muhlisin
Youngster Physics Journal Vol 4, No 4 (2015): Youngster Physics Journal Oktober 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

An atmospheric of Argon plasma jet is generated with column dielectric barrier discharge high voltage alternating current. Characterization of Argon plasma jet is used to observe the effect of variations in the voltage (V) to the length of the plasma jet. Voltage (V) and current (I) were analyzed to identify its effect to the length of the plasma jet. In this study, Argon gas is passed through the capillary column by regulating the flow rate of gas. Then the voltageis being increased until the plasma jet can be seen. Voltage is used consecutively in the range 0 to 10,5 kV at flow rate of Argon gas is 3 L / min. The result shows that electrical current increase and then reach saturation condition by the increase of voltage. The increase of the length of the plasma jet were given by the increase of the applied voltage. This research indicates that the length of the plasma jet characteristics tends to increase. The value of the voltage is affects to the value length of the plasma jet.
Karakterisasi sistem pembangkit aliran elektrohidrodinamika lucutan korona positif berkonfigurasi elektroda kawat-bidang Sumariyah Sumariyah; Azzuma Hasna Azzulkha; Muhammad Nur; Zaenul Muhlisin
Youngster Physics Journal Vol 6, No 2 (2017): Youngster Physics Journal April 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The characterization of electrohidrodynamic flow generation system (EHD) has been performed utilizing positive corona discharge configured wire-plate electrode. In this study, the characteristics of the EHD flow generation system in the form of current characteristics as a function of voltage or I-V characteristics with fixed geometry factor, in the without of lubricating oil and with the lubricating oil. The fixed geometry factor was obtained from the radius of the fixed point (r) electrode with various the electrode distance (d). This research was conducted by using positive corona incandescent discharges with wire field electrode configuration. The wire electrode used is made of stainless steel having a length of 5 cm, with wire diameter 0.11 mm, 0.14 mm, 0.21 mm, 0.36 mm, and 0.38 mm. Electrode of field used in the form of circle with diameter 20 cm. Data collection system with variation of voltage, variation of electrode distance, and variation of wire electrode diameter used. Furthermore, data analysis of measurement results was carried out. From the result of characteristic research of EHD flow generator system in the form of current as a function of voltage shows that the increase of voltage is proportional to current increase. While the current as a function of geometry shows the value of the current flowing inversely proportional to the geometry factor of the electrode distance change.Keywords:electrohydrodinamic, ion wind, positive corona discharge 
Pembuatan sistem ozonizer untuk degradasi pewarna rhodamine B dengan metode peroxone menggunakan mikrokontroler ATMEGA 8535 Rin Hafsahtul Asiah; Jatmiko Endro Suseno; Zaenul Muhlisin
Youngster Physics Journal Vol 6, No 4 (2017): Youngster Physics Journal Oktober 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The decrease of the quality water is caused by the dye waste of rhodamine B that found in liquid waste. One of the ways to treat that liquid waste is using the peroxone process that combines ozone (O3) and hydrogen peroxide (H2O2). The production of ozonizer system is vital due to its effectivity. The system is made by adding the microcontroller of Atmega 8535 as a timing controller that can adjust the duration of ozonizer system work. In addition, the concentration of H2O2 and the optimization of ozonation process were done to produce the most optimal degradation. The optimal ozone generator works on the frequency of 3500 Hz while the power is 2.15 Watt, 3576 V of voltage, and 0.6 mA of current with the average ozone production reaching 266 ppm every 30 minutes. The greater concentration of H2O2 that used and the longer ozonation time will increase the percentage degradation of rhodamine B. The greatest degradation percentage was achieved at the H2O2 concentration of 2500 ppm. The rhodamine B of 20 ppm was successfully degraded with the highest degradation percentage reaching 97% for 150 minutes.Keywords: Rhodamine B, Peroxone, Mikrokontroller
PENGARUH OZON YANG DIBANGKITKAN MENGGUNAKAN REAKTOR DIELECTRIC BARRIER DISCHARGE PLASMA (DBDP) TERHADAP KONSENTRASI OKSIGEN TERLARUT, KESADAHAN, DAN pH PADA AIR MURNI Adhi Prasetyo; Muhammad Nur; Zaenul Muhlisin; Sapto P Putro
Youngster Physics Journal Vol 4, No 3 (2015): Youngster Physics Journal Juli 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

A research on the application of dielectric barrier discharge reactor configured as a cylindrical spiral using ozone-producing which using the air as  source  and in atmospheric conditions. In this study, the observed effect of ozonation to show the influence to  dissolved oxygen, pH and Calcium carbonate. Active Electrode using copper wire spiral and has pyrex to be the dielectric. Plasma produce using AC voltages of 2 kV, 10 kV, 12.5 kV and frequencies between 880 Hz to 891 Hz. Air flow rate of 1.5 L / min. At the same time ozonation, using different voltage produce different ozone concentrations. If more voltage applied, the concentration of ozone is increasing. Similarly, the measurement of dissolved oxygen concentration and Calcium carbonate. But of water pH measurements obtained tends to be stable.Keywords: Calcium carbonate, DBD reactor, dissolved oxygen, ozone, pH.
APLIKASI PLASMA LUCUTAN BERPENGHALANG DIELEKTRIK PADA PENGOLAHAN AIR SUMUR : PENGARUH TERHADAP pH, KESADAHAN, DAN TOTAL COLIFORM Rizky Maylia; Muhammad Nur; Zaenul Muhlisin
Youngster Physics Journal Vol 3, No 1 (2014): Youngster Physics Journal Januari 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Has conducted research on dielectric barrier discharge plasma applications configured with spiral – chylindrical electrodes to generate ozone free air source. Purpose of this study was to determine the effect of ozone dissolved in water quality through pH, hardness ( CaCO3 ), and total coliform in the waterin the eastern part of the village Gemah.             Electrodes used in this study has a diameter of 3 cm and a length of 15cm. Plasma generation using AC voltage with a voltage of 7 kV. Air flow velocity used 5,5 L/min with a volume of water that will be treated with ozone as much as 1 liter. Dissolved ozone free air is obtained by incorporating into the DBD reactor, out of the reactor, ozone is formed, and flowed into the water. Dissolved ozone concentration were determined by varying the time and use a constant voltage.            The result showed the concentration of dissolved ozone diminishing increments. pH values tend to be fixed and not affected by ozone treatment of water. Water hardness value decreased slightly and the number of total coliform as a whole are likely to remain. Keywords :electrode spiral-cylindrical, dielectric barrier discharge, dissolved ozone concentrate, CaCO3, total coliform, pH.
STUDI PENGARUH UKURAN PIXEL IMAGING PLATE TERHADAP KUALITAS CITRA RADIOGRAF Ahmad Sudin; Hendri Widyandari; Zaenul Muhlisin
Youngster Physics Journal Vol 4, No 3 (2015): Youngster Physics Journal Juli 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

This study aims to determine the image on each imaging plate which has a different pixel sizes. This research is using a plane X-ray, Computed Radiography (CR) which is used in the diagnostic field. This study uses three imaging plate each having size of 0.097 mm, 0.115 mm and 0.168 mm with stepwedge objects on it and use the same factor, namely kV eksposi: 64.5 and mAs: 16. In each of the imaging plate in eksposi 3 times and the results of each radiograph imaging plate will be measured by using a densitometer. Stepwedge radiograph of the measurement results will be obtained the density and contrast value of each imaging plate. Contrast value for each imaging plate will be compared so they will know what the size of the imaging plate which has a higher contrast value. Research on the effects of different pixel size on the imaging plate is done in Radiology Hospital Tugu Semarang, in July 2014. From the results it can be concluded each different pixel sizes on the imaging plate will generate a different image quality.Keywords: pixel,imaging plate,Quality Preview, contras , density
Karakterisasi reaktor plasma berarus positif dengan konfigurasi elektroda titik-bidang dan penerapannya pada kain polyester grey Ukhti Nurohma Rizki; Zaenul Muhlisin; Fajar Arianto
Youngster Physics Journal Vol 7, No 1 (2018): Youngster Physics Journal Januari 2018
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

In this research, the effect of corona discharge plasma radiation on polyester knitting fabrics aimed at obtaining characterization of stress, current and distance relationships, obtaining ion mobility values, obtaining irradiated polyester knit fabric characterization, and obtaining SEM results showing morphological changes fabric. The reactor used is a corona discharge plasma reactor with a configuration of positive point of origin with DC high voltage generator, 15x15 cm in size with the number of 100 point needles. Factors affecting non-sample characterization or with polyester knit fabric sample as irradiation parameters include duration of irradiation, electrode spacing, and applied voltage. Based on the results of unsampled characterization and with samples using 10 variations of distance, from 0.9 cm, 2.1 cm, 2.4 cm, 2.7 cm, 3.0 cm, 3.3 cm and 3.6 cm. The result of unsampled characterization shows the current and the resulting voltage is higher than the sample. This, due to the resistivity of the fabric is lower than air resistivity, so the resulting voltage and current are small. Can be seen at a distance of 0.9 cm without sampling a rise in current of 2.5 mA with a magnitude of 0.535 kV, and there is a sample at a current rise at 2.5 mA resulting only a voltage of 0.236 kV. The resulting ion mobility shows that the greater the electrode distance the ion mobility becomes smaller. The water drop test used 5 variations of distance from 1.2 cm, 1.5 cm, 1.8 cm, 2.1 cm and 2.4 cm with duration of 5-35 minutes with 5-minute increments. Water drop test results also show that the longer the process of irradiation of polyester knitting cloth gray, then the absorption time increases. This is shown in the study where the duration of 5 minutes obtained the absorption time of 6.42 seconds while in the duration of 35 minutes obtained time 2.87 seconds. in SEM test results used 3 fabric where the fabric I as control, fabric II and fabric III experienced plasma irradiation. The control fabric has a finer surface than the plasma-treated cloth. SEM test results note that plasma change morphology on polyester fabric, thus increasing the roughness of fabric surface. Keywords: polyester fabrics, ion mobility, multi-point fields, textile treatment, corona plasma, clashing fabric properties
PENERAPAN TEKNOLOGI PLASMA DENGAN MEMANFAATKAN RANCANG BANGUN OZONE GENERATOR UNTUK PENGAWETAN CABAI MERAH (CAPSICUM ANNUUM L.) GUNA MENDUKUNG KETAHANAN PANGAN NASIONAL Yudi Pratama; Anna Adianti; Dhyan Prastiwi; Rofiqotul Khasanah; Zaenul Muhlisin; Muhammad Nur
Youngster Physics Journal Vol 5, No 2 (2016): Youngster Physics Journal April 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

In the research, done ozonation of red chili (Capsium annum L.) to getting preservation methods for saving red chili (Capsicium annum L.). To observe the effect treatment of ozone gas, cleaned chili then soaking on water while ozone was dissolving on the water. Then chili that dissolving on water ozonation to be saving on open space, glass cupboard and cooling spacie.On saving to one month have getting that red chili has ozonation and saving on cooling space still in fresh condition.Keywords: Red pepper, ozone, ozone generator
KARAKTERISTIK THERMOLUMINESCENT DOSIMETERS UNTUK DOSIMETRI IN VIVO PADA RADIOTERAPI EKSTERNA Mursiyatun Mursiyatun; Evi Setiawati; Zaenul Muhlisin
Youngster Physics Journal Vol 3, No 4 (2014): Youngster Physics Journal Oktober 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The Characteristics of Thermoluminescent Dosimeters (TLD) for in vivo dosimetry in external radiotherapy have been examined. The research was intended to determine the TLD calibration factor and TLD correction factors to various radiation doses, source surface distance (SSD), size field and angle of incidence so that the TLD can be beneficial for in vivo dosimetry. TLD was placed on the surface of solid water phantom and ionization chamber at the reference depth (10 cm). Then was irradiated using 6 MV photons with variation in radiation doses, SSD, size field and angle of incidence. The research  resulted in the TLD calibration factor (4,26 + 0,3) x 10-2 cGy/nC. The value of TLD correction factors at the number of MU 100, SSD 100 cm, size field 10 x 10 cm2 and angle of incidence 00 was 1.Keywords: Thermoluminescent Dosimeters (TLD), in vivo dosimetry, calibration factor, correction factor
Study of the most responsible parameters on polarization for powerful preliminary test of oil quality Ketut Sofjan Firdausi; Suryono Suryono; Priyono Priyono; Zaenul Muhlisin
Youngster Physics Journal Vol 7, No 2 (2018): Youngster Physics Journal April 2018
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

In this study, the most responsible parameters on polarization in total natural vegetable oils and fats have been investigated by determination of the relation between the polarization change and fatty acids (FA) composition. The change of light polarization was simply measured by using a pair of polarizer-analyser to indicate oil quality level, and the FA composition was obtained by using Gas Chromatography and Mass Spectrometer (GCMS) method. Various vegetable oils and fats were examined without any preliminary treatments. The experimental condition of the samples during measurement was assumed to be constant. It has been shown that various oils and fats have different angle of change of polarization, which indicates various oil quality level relative to each other, in agreement to the previous works. Especially for vegetable oils, high change of polarization has been considered as low quality of oil. The long chain of saturated fatty acids (SFA) and unsaturated fatty acids (UFA), which are distributed at third position (R3) and first position (R1) of triglycerides (TG) molecules, are responsible for the change of polarization and presented as a linear combination of the number of SFA or UFA. The result shows that the polarization could be used as powerful method for preliminary detection of oil quality level. The highest number of coefficient of C19:0 in lard indicates that this method has provided good prospect to evaluate the halal level of oil due to lard contamination.Keywords—polarization, triglyceride (TG), saturated fatty acid (SFA), unsaturated fatty acids (UFA)
Co-Authors Achmad Sjaifudin Tayibnapis Ade Ika Susan Adhi Prasetyo Agus Setyawan Ahmad Sudin Ahmas Sudin, Ahmas Alfajrin, Achmad Chalid Afif Ali Khumaeni Amatul Lutfiah Andi Wibowo Kinandana Andi Wibowo Kinandana Anna Adianti Anwar Usman Ardhianto, Khamdi Bagas Ari Bawono Putranto Ariij Naufal Arzi, Yudha Hamdi Asep Yoyo Wardaya Azzuma Hasna Azzulkha Baital, Muhammad Sawal Bawono, Ari Binu Soesanto, Qidir Maulana Charis Munajib Choirul Anam AM Diponegoro Darliawati, Herli Dhyan Prastiwi Dhyan Prastiwi Dhyan Prastiwi Erma Prihastanti Evi Setiawati F Arianto Fajar Arianto Fajar Ariyanto Fakhruddin Mangkusasmito Filemon Jalu N Putra Geoff Dougherty Gunawan Gunawan Hadi, Muhammad Rafli Irsyad Hasan, Siti Nurjannah Hendri Widiyandari Hendri Widyandari Heri Sugito Heri Sutanto Heri Sutanto Herli Darliawati Iis Nurhasanah Imam Firmansyah Isnain Gunadi Jatmiko Endro Suseno Ketut Sofjan Firdausi, Ketut Sofjan Komariah, Rahma Nur Kusworo Adi Mahendra Kusuma Nugraha Mardhiyatna, Mardhiyatna Megarini Hersaputri Muhammad Adrian Lathif Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Mursiyatun Mursiyatun Nazuwatussya'diyah, Nazuwatussya'diyah Nouval Khamdani Nur, Muhammad Nuraini, Desy Pandji Triadyaksa Prastiwi, Dhyan Pratama Jujur Wibawa Priyono Priyono Putra, Bintang Ridzky Ranindra Rin Hafsahtul Asiah Riska Amilia Rizky Maylia Rofiqotul Khasanah S Juliawan S. Suryono Sapto P Putro Sapto P. Putro Sari, Rizki Yustisia Sholehah Aisyah Sri Widodo Agung Suedy Sulistia Nurdianik Sumariyah Sumariyah Surahman, Arif Susilo Hadi Susilo Hadi, Susilo Syamsul Arifin Tayibnapis, Achmad Sjaifudin Ukhti Nurohma Rizki Wahyu S. Budi Wienda Intan Permatasari Windarta, Jaka Wulandary Oktiyana Yudi Pratama Yusup Hidayat