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All Journal BERKALA FISIKA YOUNGSTER PHYSICS JOURNAL Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Ilmiah Arena Tekstil Bulletin of Chemical Reaction Engineering & Catalysis
Sumariyah Sumariyah
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
Chemical Engineering, Chemistry & Bioengineering Chemistry Industrial & Manufacturing Engineering Physics

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Rancang Bangun Sistem Pengukur Konsentrasi Larutan Tembaga Sulfat (CuSO4) Menggunakan Komputer Sumariyah, Sumariyah; Endro Suseno, Jatmiko; L, Fitria
BERKALA FISIKA Vol 10, No 3 (2007): Berkala Fisika
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Abstract

A system  of    Sulphate Copper (CuSO4) liquid consentration measurement by using compute has been made. The display of it through monitor in the computer with the limitation of measurement  0.1 M to 1M. The main components of the measure system of   Sulphate Copper (CuSO4) liquid consentration are : tungsten filamen light which include in the sample and photodioda light sensor also IC 741 as a Operational Amplyfier to strengthen the tension of sensor output. As the chage of the output analog signal power tobe digital signal ADC 0809 is used. And also as an interfce which is the pheripheral instrument of communication equipment with computer is used PPI 8255. The software on  this measure system uses Turbo Pascal version 7.0. This system had been realized and can measure the Sulphate Copper (CuSO4) liquid consentration wich the linier regresion equal is , with X hole is the sample consentration (M) and Y hole is the measure result of the concentration (M) and the deviation is 0.0326.
Rancang Bangun Alat Pengukur Densitas Optik Radiograf Sinar-X Digital Sumariyah, Sumariyah; Gunadi, Isnain; Mujib, Syaiful
BERKALA FISIKA Vol 9, No 4 (2006): Berkala Fisika
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A digitized X-ray radiograph’s optical density measurer has been designed.  It’s scale work is between  0.00 to  4.42. The main part of  this instrument is an optocopler sensor which will convert the light passing by  to an analog current. An optocopler circuit is a combination of LED as a light source, and a photoresistor as a light sensor. The sensor circuit is combined with a voltage devider circuit so that the voltage caused by the light and the output is work reversely. Besides, it combined with an instrumentation amplifier which amplifies the output voltage of the whole sensor. A decoder then added to the circuit to translate the BCD code to a seven segment display. The related segment, then, turned on according to the magnitude of the output voltage. The last part is a seven segment displayer which displays the measure’s result. According to a testing oxamination, the instrument is able to produce a measurement result till a resolution of 0.01.
PENENTUAN STRUKTUR KRISTAL AlMg2 ALLOY DENGAN DIFRAKSI NEUTRON Ismul Hadi, Arif; Sumariyah, Sumariyah; Dahlan, M.; Mohtar, Mohtar
BERKALA FISIKA Vol 14, No 2 (2011): Berkala Fisika
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The determination of crystallography structure of AlMg2 alloy has been done by neutron diffraction. In fabrication process, it was addressed by rolling phases. The first by hot rolling with thickness follows: 8.35 mm; 7.00 mm; 5.6 mm; 2.60 mm; 1.65 mm ± 0.05 at  425 0C temperature extended by cold rolling: 1.65 mm to 1.30 mm ± 0,07 thickness at normal temperature. Counting of the data was started by activate of detector from 110 to 400 angle with 0.075 overstep and preset monitor count of 60,000 at 26 MW. Processing of the data using of microcomputer 16 bit NEC PC-9801 VM2. The results show that the AlMg2 alloy structure are FCC system with lattice parameter (a) = 4.0817 A0.   Keywords: AlMg2 alloy, neutron diffraction, and FCC
Review Probabilitas Menemukan Elektron dengan Fungsi Gelombang Simetri dan Antisimetri pada Molekul Yusron, Moh.; Firdausi, K. Sofjan; Sumariyah, Sumariyah
BERKALA FISIKA Vol 10, No 1 (2007): Berkala Fisika
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The probability density of  and  for the symmetry and asymmetry wave function respectively, for  ion has been simulated. The  and  wave function have been obtained through the solutions of one dimensional time-independent Schrödinger equation.  The  and  are formed then by linear combination of individual solution of wave function of hydrogen atom. The probability density is calculated and simulated for several values of inter nuclear distance in Bohr radius, using Matlab 6.5. The interpretation of  shows that the probability in finding the electron in the space between inter nuclear distance of 0,2 is very small for asymmetry and very large for symmetry wave function. If the inter nuclear distance is made larger in several , the probability becomes smaller. The probability density is just equal to individual in finding electron in a hydrogen atom. Key words: The probability density, symmetry and asymmetry wave function, the  ion.
Pereduksian COX, NOX, SOX, HC dari Kendaraan Bermotor dengan Menggunakan Plasma Non-Termik Nur, Muhammad; Wirawan, Bukit Yuta; Adi Wijaya, Wahyu; Suseno, Ahmad; Sumariyah, Sumariyah
BERKALA FISIKA Vol 9, No 4 (2006): Berkala Fisika
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Abstract

Reduction NOX gas from motor vehicle 1486 cc emission have been done by using corona glow discharge plasma which awakened with power source from modified system ignition of car.NOX Gas is result emission of motor vehicle 1486 cc at 2000 rpm. Flow NOX source are joined with reactor. Corona glow discharge plasma awakened in the reactor with knife to plane electrode geometry configuration with power source from modified system ignition of car. Corona that happened in reactor which containing of motor vehicle gas emission 1496 cc will yield ion, electron, and energetic radical. NOX will turn into compounds which do not dangerous and it’s indicate that pollutants in reactor was reduced.  To get the decomposition efficiency of NOX it’s require to be done the measurement of concentration of NOX before and after reduced. The biggest decomposition efficiency of NOX which obtained in this research is 81.38 % at distributor rotation equal to 1500 rpm with current equal to 80µA. Anion and cation analysis show there are cation NH4+ and anion CO32-, SO32-, and SO42-, that giving hypothesize that one of compiler compound of crust result of system prototype to reduce NOX are ammonium carbonate ((NH4)2CO3), ammonium sulfide ((NH4)2SO3), and ammonium sulphate ((NH4)2SO4).
RANCANG BANGUN OTOMATISASI PENGATURAN POSISI MEJA CT SCAN UNTUK CENTERING PASIEN MENGGUNAKAN KAMERA KINECT BERBASIS MIKRO-KONTROLER Setyawati, Rohmah Cahya Eka; Anam, Choirul; Suryono, Suryono; Arifin, Zaenal; Sumariyah, Sumariyah
BERKALA FISIKA Vol 22, No 4 (2019): Berkala Fisika Vol. 22 No. 4 Tahun 2019
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Computed tomography (CT) merupakan suatu alat yang digunakan untuk mendapatkan citra tubuh pasien untuk mendiagnosis berbagai penyakit. Tujuan penilitian ini adalah mengotomasi posisi meja pasien CT scan menggunakan kamera Kinect berbasis Mikro-kontroler ATmega 328p sesuai ukuran tubuh pasien. Mikro-kontroler ATmega 328p digunakan sebagai pusat kendali otomatis dalam menggerakkan meja pasien ke atas-bawah sehingga posisi tengah pasien tepat berada pada iso-center. Adapun Mikro-kontroler mendapt input dari perbedaan posisi center pasien dan iso-center pesawat CT yang diperoleh dari citra yang dihasilkan oleh kamera Kinect. Penelitian ini telah berhasil merealisasi sistem otomatisasi posisi meja CT yang dapat dinaikkan dan diturunkan secara otomatis dan dikendalikan berdasarkan input dari kamera Kinect. Meja pasien CT bergerak naik 1 cm untuk setiap empat kali putaran motor. Meja dapat begerak hingga batas maksimal sejauh 15 cm.Kata Kunci: CT, meja pasien, mikro-kontroler, kamera Kinect, patient center, gearbox.
DESAIN DAN IMPLEMENTASI MESIN COMPUTER NUMERICAL CONTROL (CNC) BERBASIS ARDUINO SEBAGAI PLOTTER UNTUK MENGGAMBAR GARIS DAN BIDANG SEDERHANA Nugroho, Hafidz; Sumariyah, Sumariyah
BERKALA FISIKA Vol 22, No 4 (2019): Berkala Fisika Vol. 22 No. 4 Tahun 2019
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The aim of this research is to design and to implement a computer numerical control (CNC) machine using a cellular phone through bluetooth networks for drawing on a two-dimensional (2D) area of 40 mm x 40 mm. The machine consisted of several main parts, including DVD motor stepper, L293D, servo motor, HC-05, and cellular phone. The control was carried out by using the Blynk application that can be used in two modes, namely automatic (G-code based) and manual modes. The capability of the machine to draw test images were carried out, including linear motion, circular motion, up and down motion, displaying menu, rectangle shape, triangle shape, and circular shape. Results show that the CNC machine can move to draw images according to the commands given in each command mode.Keywords: CNC, Cellular phone, Bluetooth, Blynk
RANCANG BANGUN SISTEM KONTROL LAMPU, PAGAR, PINTU, DAN JENDELA (LPPJ) PADA MINIATUR RUMAH MENGGUNAKAN ARDUINO DAN TELEPON SELULE Aziz, Fariz Abdul; Sumariyah, Sumariyah
BERKALA FISIKA Vol 23, No 1 (2020): Berkala Fisika
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The positive impact of technological advancements is to make it easier to use and to control electronic devices by a microcontroller. The aim of this research is to remotely control lights, fences, doors, and windows (LPPJ) on miniature homes using cellular phones connected to bluetooth using Arduino Mega 2560. This control system consisted of Arduino Mega 2560, LDR sensor, servo motor and motor servo2, DC motors, relays, and cellular phones. The workings of the LPPJ control system is when the LDR sensor detects sunlight, then it will give an order to the relay to turn on or off the light. In addition to using the LDR sensor to control the lights, the LPPJ system uses remote control by using cellular phones with communication via Bluetooth to turn on or off the light, to move the fence, door, and window by pressing the button on the cellphone. It is successfully designed and developed a control system of LPPJ on miniature homes using the cellular phones.
STUDI PRODUKSI RADIONUKLIDA MEDIS UNTUK GENERATOR 89Sr/90Y DARI HASIL REAKSI 89Rb(p,n)89Sr/90Y PADA SIKLOTRON MEDIK SECARA KOMPUTASI Hidayat, Yusup; Wardaya, Asep Yoyo; Triadyaksa, Pandji; Setiawati, Evi; Muhlisin, Zaenul; Sumariyah, Sumariyah; Suseno, Jatmiko Endro; Binu Soesanto, Qidir Maulana
BERKALA FISIKA Vol 22, No 4 (2019): Berkala Fisika Vol. 22 No. 4 Tahun 2019
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A computational calculation to determine production capacity of 90Y from the results of nuclearreactions 89Rb(p,n)89Sr/90Y from several medical cyclotrons has been carried out. Calculations were used to obtain the target thickness of 89Rb and maximum activity of 90Y on variable energy, time and irradiation currents. Calculations were also carried out to measure the impurity radionuclide activity during the reaction. The results activities of 90Y were obtained through modeling using the SRIM-2013 software and the TENDL-2017 application and calculated using MATLAB software. The results modeling and of calculations can predict the activity of 90Y and it can be used as an initial reference in the radionuclide production process using a cyclotron. The maximum activity of 90Y of 5409.80 mCi with a 10.54 mm-target thickness of 89Rb is generated from a cyclotron which has a 30 MeV proton beam with a 50 μA radiation current beam and 2 hours irradiation time. Using the same proton, current and irradiation time at irradiation energy of 8 MeV, 15 MeV and 22 MeV, the produced activity of 90Y was smaller, there are 552.28 mCi, 2100.39 mCi and 3644.31 mCi. The radioisotope of 90Y can be used in patients with a normal dose of 0.4 mCi / kg body weight, therefore in one production can supply the needs of 104 patients.Keywords: medical cyclotron, calculation and modeling, 90Y activity
APLIKASI MODUL SENSOR CAHAYA GY-302 BH1750 DAN SENSOR JARAK ULTRASONIK HC-SR04 PADA EKSPERIMEN FOTOMETER BERBASIS MIKROKONTROLER ARDUINO UNO Muryani, Sri; Sumariyah, Sumariyah
BERKALA FISIKA Vol 23, No 4 (2020): Berkala Fisika
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This  study  aims  to  implement  the  GY-302  BH1750  light  sensor  module  and  the  HC-SR04 ultrasonic proximity sensor to determine the illumination of the test lamp and distance in an Arduino Uno-based photometer experiment.  There were aluminum rail with a total length of 100 cm and the sensor rail with length of 80 cm in the mechanical device of this photometer, while the sensor was made from acrylic. The working principle of this photometer experiment tool began with a DC motor that puts the sensor at the initial state near the limit switch 1. The sensor measured the illumination and distance to display on the LCD. The motor moved the sensor  away  from  the  lamp  and the  sensor  stopped  every  5  cm  change in  distance,  then  the sensor detected the distance and illuminates in which their values were displayed on the LCD. The motor returned to the limit switch 1 when it hits at the limit switch 2 of the limit finish. The average error value of the ultrasonic sensor calibration was 1.35% with the correlation value of 0.9997. Meanwhile the average error value of the light sensor calibration was 3.39% with the  correlation  value  of  0.9867.  The  results  of  this  photometer  experiment  showed  that  the intensity of the yellow, clear, red, and blue lights are 7.91, 6.42, 2.10, and 0.49 Cd with error values of 15.66, 11.61, 9.12, and 7.34% and the correlation values of 0.9954, 0.9983, 0.9987, 0.9981, respectively.Keywords: Photometer, light sensor, proximity sensor 
Co-Authors Achmad Sjaifudin Tayibnapis Ade Ika Susan Agus Sudarmanto Ahmad Suseno Andi Wibowo Kinandana Andi Wibowo Kinandana Anjar Widiyatmoko Anwar Usman Arif Ismul Hadi Aris Supriati Asep Yoyo Wardaya Aziz, Fariz Abdul Azzuma Hasna Azzulkha Binu Soesanto, Qidir Maulana Bukit Yuta Wirawan Cecep Kusmana Choirul Anam AM Diponegoro Dananjaya, Bachtiar Putra Darliawati, Herli Dhyan Prastiwi Dyah Hari Setyaningrum Evi Setiawati Fajar Arianto Fajar Arianto Fitria L Gunawan Gunawan Herli Darliawati Ibnu Arimono Iis Nurhasanah Isnain Gunadi Jatmiko Endro Suseno Jumadi Priyono K. Sofjan Firdausi M. Dahlan Maryam Restiwijaya Moh. Yusron Mohammad Munir Mohtar Mohtar Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur Muhammad Nur N. Ayu Ketut Umiati Noviyani, Siti Nugroho, Hafidz Nur, Muhammad Pandji Triadyaksa Prastiwi, Dhyan Pratama Jujur Wibawa Sari, W.T. Sartinah Sartinah Setyawati, Rohmah Cahya Eka Sri Muryani, Sri Suryono Suryono Syaiful Mujib Tanza, Nendya Ertika Tayibnapis, Achmad Sjaifudin Wahyu Adi Wijaya Yusup Hidayat Zaenal Arifin Zaenul Muhlisin Zaenul Muhlisin Zakiyyah, A.Z.