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All Journal BERKALA FISIKA Pedagogi: Jurnal Ilmu Pendidikan PRISMA FISIKA Jurnal Visi Ilmu Pendidikan YOUNGSTER PHYSICS JOURNAL Jurnal Mahasiswa Teknologi Pendidikan (JMTP) Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Fisika Unand Lentera Pustaka Jurnal Ilmiah Arena Tekstil QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) ELSE (Elementary School Education Journal) : Jurnal Pendidikan dan Pembelajaran Sekolah Dasar JMM (Jurnal Masyarakat Mandiri) Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan Journal of Physics and Its Applications International Journal of Community Service Learning EduReligia : Jurnal Pendidikan Agama Islam Jurnal Ilmu Fisika Jurnal Ilmiah Mandala Education (JIME) International Journal for Educational and Vocational Studies Jurnal Studi Guru dan Pembelajaran Jurnal Eduscience (JES) Jurnal Ilmiah Profesi Pendidikan Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika Edunesia : jurnal Ilmiah Pendidikan Physics Communication Indonesian Journal of Instructional Media and Model Journal of Computer Networks, Architecture and High Performance Computing JPTE: Jurnal Pendidikan Teknik Elektro Ceria: Jurnal Program Studi Pendidikan Anak Usia Dini Munaddhomah: Jurnal Manajemen Pendidikan Islam Transformasi dan Inovasi : Jurnal Pengabdian Masyarakat Educenter: Jurnal Ilmiah Pendidikan Edukasia: Jurnal Pendidikan dan Pembelajaran Abdi Cendekia: Jurnal Pengabdian Masyarakat Flight Attendant Kedirgantaraan: Jurnal Public Relation, Pelayanan, Pariwisata Physics and Science Education Journal (PSEJ) EDUCENTER JURNAL PENDIDIKAN Jurnal Pendidikan MIPA
Fajar Arianto
Laboratorium Fisika Radiasi Dan Fisika Medik, Departemen Fisika Universitas Diponegoro, Jl. Prof. Soedarto SH Tembalang Semarang
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Journal : YOUNGSTER PHYSICS JOURNAL

 1 
Pengaruh Ozon yang Dibangkitkan Melalui Reaktor Plasma Berpenghalang Dielektrik Elektroda Silinder Spiral Terhadap Pengawetan Cabai Saraslifah Saraslifah; Muhammad Nur; Fajar Arianto
Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Research on the effects of ozone generated by the plasma reactor cylindrical spiral electrode to the shelf life of chili has been done in Plasma Physics Laboratory, Diponegoro University. This study aims to obtain optimal voltage values to produce maximum ozone. And obtaining effect of ozonation time and storage for chili quality. Ozon which used is produced by dielectric barrier discharge plasma reactor with spiral cylinder configuration. This ozon , which produced by the reactor dissolved in water for washed the chili. Chili using ozone washing is done with a variety of washing time 0,5,10,15,20,25 and 30 minutes. The chili then stored in a refrigerator at a temperature of 17 ℃ for 25 days. Characterization of the reactor showed that the greater value of the applied voltage, increased current and concentration of ozone produced. Voltage used for ozonantion is 2400 V with a concentration of ozone generated at 23.75 ppm. Ozone dissolved in water to wash the chili with dissolved ozone concentration is 1.66 ppm or 7%. From the analysis of the level of damage chili, ozonation results with lowest damage rate is at the time of treatment 15 minutes with a percentage of 8% damage to the shelf life of 25 days. From the test results of proximate preservation chili using ozone is not particularly affect the content in chili peppers that is safe to use. The longer the treatment time, reduce the amount of bacteria on pepper growing. At thetime of treatment 15 minutes colonies of fungi reduced til 50,8 % and bacteria were reduced 51.7%. It seen from the results of TPC (Total Plate Count).
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
Karakteristik plasma lucutan berpenghalang dielektrik isian gas Nitrogen Febry Fitriani; Muhammad Nur; Fajar Arianto
Youngster Physics Journal Vol 6, No 3 (2017): Youngster Physics Journal Juli 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Research on the characteristics of the dielectric barrier discharge filled with Nitrogen gas fields has been done. The plasma reactor that used in this study formed by a spiral-shaped cylindrical electrode component. Spiral electrode is made of copper wire with 72 windings and 25.05 mm of diameter, while the cylindrical electrode from copper sheets are glued on the walls of the outer tube diameter of 0,27 mm with a length of 25 cm. The dielectrics that used is pyrex with a length of 30 cm, a diameter of 3 cm, and a thickness of 2,45 mm. Characterization of dielectric barrier discharge plasma is used to determine the working area of the reactor and knowing the initial voltage to the emergence of the current as a sign of discharge. This characterization was done with Nitrogen gas field, which is a variation of voltage used is from 0,4 to 1.2 kV with a rise of 0.2 kV interval and Nitrogen flow rate of 2-8 L /min with intervals increase of 1 L/min. Result in the discharge flow 7 L/min with the lowest mobility value of 58.300 m2/V.s and the discharge flow 4 L/min with the highest mobility value of 91.600 m2/V.s. Therefore, it can be concluded that the greater the saturation current value, the greater the value of the ion mobility (μ).Keywords: Dielectric barrier discharge plasma, Characteristics of dielectric barrier discharge plasma, Mobility of charge carriers.
Karakterisasi reaktor plasma berarus positif dengan konfigurasi elektroda multi garis-bidang Sholehah Aisyah; Muhlisin Zaenul; Arianto Fajar
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

Plasma technology is the most widely researched technology. Research on various types of plasma reactors began much done in order to obtain plasma which has high homogeneity. This study aims to obtain plasma discharge characteristic I-V relations in the plasma reactor wire-plate electrode configuration. This study uses nine electrodes wire with a length of 12 cm and a diameter of 0.38 mm as the positive electrode and PCB as a negative electrode plates. Characterization of plasma corona wire-plate is done by adjusting the distance between the electrodes of 1.8 cm, 2.1 cm, 2.4 cm, 2.7 cm, 3.0 cm, 3.3 cm, 3.6 cm, 3.9 cm, 4.2 cm, and 4.5 cm. The results showed that the current increases with the applied voltage and inversely proportional to the distance between the electrodes. In the future this method it is possible to be applied on an industrial scale.Keywords: Plasma corona, plasma corona wire-plate
Karakterisasi reaktor plasma lucutan berpenghalang dielektrik berkonfigurasi elektroda spiral-silinder dengan sumber udara bebas Istiqomah Istiqomah; Muhammad Nur; Fajar Arianto
Youngster Physics Journal Vol 6, No 3 (2017): Youngster Physics Journal Juli 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

A research about  characteristics of the plasma reactor dielectric barrier discharge gas filling the air. Plasma reactor in this research was prepared by component an electrode in the form of copper wire wrapped with a number of turns as much as 72 coil and coil diameter 25,05 mm, pyrex tube with a length of 30 cm, a diameter of 3 cm, and a thickness of 2,45 mm as a dielectric barrier, and the outer electrode in the form of cooper sheet the loaking the pyrex tube. This characterization is done by the air stream into the reactor without sample. Input voltage variation used 0,2-1,4 kV at intervals rise of 0,2 kV and the air flow rate 1-10 L/min with intervals increase of 1 L/min. The results of the characterization of current and voltage is obtained, the greater the measured current with increasing voltage and air flow rate given. The result of the characterization can be used to calculate the value of the charge carrier mobility, and the charge carrier mobility values obtained on the air flow rate 1-8 L/min increased along with the increase in air flow rate. Mobility values in the lowest obtained by air flow rate 2 L/min and the highest air flow rate 8 L/min at 2,59 x 10-5 m2/Vs and 6,08 x 10-5 m2/Vs. In addition, there are also ozone measured from the reactor stuffing free air, and obtained the maximum ozone concentration in the air flow rate of 10 L/min at 191,698 ppm.Keywords: the plasma dielectric barrier discharge, ozone, mobility of the charge carriers
Co-Authors ABDUL MANAF Abror, Sirojuddin Achmad Sjaifudin Tayibnapis Ade Ika Susan Agusti, Fiqrie Restia Agustina, Sheila ALFINA RAHMAWATI, DIAN Ali Khumaeni ALIM SUMARNO AMALIA WAHYUNINGTYAS, ISTI Anas Ahmadi Andi Kristanto Andi Mariono Andi Wibowo Kinandana Anitasari, Emi Anwar Usman Armilah, Mila Siti Asep Yoyo Wardaya Auliyani, Chaeriyatun Nissa Azizul Khakim, Azizul Bachri, Bachtiar S. Bachri, Bachtiar Sjaiful Badiah, Lutfi Isni Bambang Yulianto Binar Kurnia Prahani Chrisdian, Viddo Citra Fitri Kholidya Dahurandi, Keristian Darliawati, Herli Darmanto Darmanto Dewantari, Aditya Dewantoro, Muhammad Dhiaulhaq, Shifiyan Ahmad Dhyan Prastiwi Emi Anitasari Erma Prihastanti Fatah Yasin FAUZI ADHIM, MUHAMMAD Febry Fitriani FITRIA, ZOIMATUL Fuad Anwar, Fuad Gunawan Gunawan Hadi Prasetyo Utomo Hamdiyah, Heni Handayani, Liska Tri Handayani, Nita Hariyati, Mutty Harmanto Harmanto HASAN SUBEKTI Hasan, Siti Nurjannah Hasnawati, Lina Hayati, Widia Herli Darliawati Hisyam, Hisyam Husni Mubarok Iis Nurhasanah Isa Ansori Islami, Jundu Muhammad Mufakkirul Istiqomah Istiqomah Juari, S K Sofjan Firdausi khusnul khotimah Kusuma, Annisa Dian Kusumandari, Kusumandari Layli Hidayah Lestariningsih, Ayun Rahayu Liska Tri Handayani M.A. Muazar Habibi Maharani, Rosy Puspa Martadi, Martadi Maureen, Irena Y. Medina, Alfiarani Meisa Diningrat, Syaiputra Wahyuda Moh Jazuli, Moh Muhammad Adrian Lathif Muhammad Hanif Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Mustaji Mustaji, Mustaji Ngurah Ayu Ketut Umiati Novan Prawira, Dyon Nufus, Asyifa’un Nur, Muhammad Nurhasanah Nurhasanah Nurul Azmi, Nurul Nuryati, Dwi Wahyu Nurzanah, Salsabilla Choerunnisa Pandji Triadyaksa Prasetyo Basuki Prastiwi, Dhyan Pratama Jujur Wibawa Priyono Priyono PUSPITA WIRASARI, ENGGAL Putra, Riko Putri, Weni Antari Ramadhan, Avinda Zakcy Rayhani, Fauziah Rety, Dahniarti Cahyani Riyatun, Riyatun Rohid, Nabrisi Rohid, Nibrosu RR. Ella Evrita Hestiandari Rusijono, Rusijono Rusjiono Rusjiono sahamudin, Sahamudin Saraslifah Saraslifah Setyaedhi, Hari Sugiharto Shofiana, Fahlulia Rahma Sholehah Aisyah Siti Khodijah Siti Masitoh Sueb Suharyana Suharyana Sumariyah Sumariyah Susarno, Lamijan Hadi SYAIPUTRA WAHYUDA MEISA DINING Tayibnapis, Achmad Sjaifudin Terananda, Nabila Zuhroh Ukhti Nurohma Rizki Utari Dewi Utari Utari Very Richardina Wahyu Setia Budi Waode Hamsia, Waode Wasilatul Murtafiah Wienda Intan Permatasari YATIM RIYANTO Youhanita, Ety Yudha Arman Zaenul Muhlisin Zahroh, Mihnatuz