Jatmiko Endro Suseno
Departemen Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang

Published : 19 Documents
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PEMINDAIAN DAN PENGOLAHAN LABEL KEAMANAN PADA DOKUMEN RAHASIA DENGAN TITIK KUANTUM Bilqis, Ratu; Suseno, Jatmiko Endro; Isnaeni, Isnaeni
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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Security label is made to anticipate the increasing of documents falsification trend. In this study, the security label is created using CdSe quantum dots. The quantum dots can be used for casting light according to its wavelength so that the particle size can be specific. That?s why its worth to be security key from quantum dots. The quantum dots that be used is colloidal CdSe quantum dots with a wavelength of 595 nm and 526 nm. In the previous studies have been done the two-dimensional scanning process of quantum dots for one color as a security label. However, the results obtained are not perfect because it has not done the repair process for the image resulted. Therefore, in this study conducted by the two-dimensional scanning of quantum dots in two colors to add a level of security on the label then followed by image processing in order to obtain a better image. Image processing which have been done by observing the histogram of the image in order to obtain a threshold value between the object and the background image. Scanning generate data in the form of a sequence intensity value corresponding to the color intensity of quantum dots to obtain image data processing results. Image processing through the observation of the histogram data successfully get the intensity threshold value so that the image can be processed to become more visible in accordance with the sample
RANCANG BANGUN SISTEM PENGATURAN KELEMBABAN TANAH SECARA REAL TIME MENGGUNAKAN MIKROKONTROLER DAN DIAKSES DI WEB Saputro, Irwan Agus; Suseno, Jatmiko Endro; Widodo, Catur Edi
YOUNGSTER PHYSICS JOURNAL Vol 6, No 1 (2017): Youngster Physics Journal Januari 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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A research on telemetry or remote measurement, for the parameters of soil moisture and temperature of the object remains in the form of agricultural land. The measured parameters such as soil moisture values are obtained from soil moisture sensors. In addition added also parameter value air temperature obtained by measuring the air temperature. In order to measure the air suh used sensor DS18B20. Both of the devices are read and controlled by a microcontroller ATmega328 with the Arduino software. Recipients get the value of soil moisture humidity value from the sensor. Data such as soil moisture and temperature value of the air is sent to the microcontroller, then transmitted to the database server by using the Internet network GSM. The system will be automatically watering when the soil moisture values are below standard. The system is using web interface that allows users to monitor soil conditions without the need for special receiver station. The results of this study, the system can perform the measurement values of soil moisture and air temperature to the server and perform automatic watering. This reasearch used three medium, wherein each soil moisture rises up to 99% in the first and second medium, in the third medium soil moisture rises up to 97%. The increase in the value of soil moisture caused by the automatical watering is based on parameter moisture used.Keywords: Soil Moisture Sensor, Sensor DS18B20, telemetry by GSM internet, Arduino
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
Publisher : BERKALA FISIKA

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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 ?A 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
SISTEM MONITORING KENDARAAN SECARA 3D DENGAN SENSOR TEKANAN UDARA DAN GLOBAL POSITIONING SYSTEM (GPS) BERBASIS WEB SECARA REALTIME Rohman, Fatkhur; Suseno, Jatmiko Endro; Widodo, Catur Edi
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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A research on telemetry or remote measurement has been conduced, for the parameters of the position of a moving object, ie the vehicle. Parameters such as latitude and longitude position is obtained from the GPS receiver (Global Positioning System). GPS receiver is used Ublox Noe 6 M. In addition it?s also added a altitude parameter, which is obtained by converting the changes of air pressure. Sensor BMP180 used to measure air pressure. Both of these devices are read and controlled by a microcontroller ATmega328 with the Arduino software. The GPS receiver to get latitude and longitude coordinates from the satellite. Coodinates data is sent to a microcontroller, combined with altitide data, then data sent to the database server using internet with GSM network. In this system used web interface that allows users to monitor the position of the vehicle, without necessary for special receiving station. Based on the results of validation latitude and longitude coordinates from the GPS receiver, with GARMIN GPS devices with the GPSMAP 78s series, this GPS receiver has the highest standart deviation ± 0.000006 degrees for the longitude and ± 0.000012 for latitude. The position of the vehicle in form of latitude and longitude coordinates, then illustrated on Google Maps. The results of this study, acqusition system that has been mounted on the vehicle position coordinates can transmit data to the server, and the data transmission process becomes faster and cheaper. This system will continue sends the data for vehicles that are in the area covered by the GSM network provider. Lack of this system is data transmission medium that is highly dependent on the availability of the GSM network. If the GSM network is weak, it can cause failures in data transmission.
PEMBUATAN GENERATOR MIKRO WINDBELT DENGAN OPTIMASI PARAMETER PITA DAWAI DAN MAGNET Hidayat, Muhammad; Suseno, Jatmiko Endro
YOUNGSTER PHYSICS JOURNAL Vol 5, No 3 (2016): Youngster Physics Journal Juli 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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ABSTRACTWind energy has the potential to be utilized as a power plant. One of the utilization of wind energy into electrical energy by making Windbelt generator. Then do research to find the value of the voltage on the generator Windbelt optimization by varying the parameters of the ribbon and the magnet, the magnetic variation on this Windbelt generator includes a magnet and a thick diameter magnet, variations among others 10,12,15,18,20 mm diameter while the thickness variation between another 1.5 and 2 mm. Then for the ribbon parameters include length of ribbon and tape width, variations in use for a long ribbon among others 60,80,100 cm whereas the variation for bandwidth among others 15,18,20,25,30 mm. In order to obtain the optimal voltage value then the coils and wind speeds need to be noticed and measured, variations 1000,1500,2000 winding coils used for measuring wind speed at 1,2,3,4 m / s. Having done research found value best optimization of parameter variations - variations of which have been taken to optimsi voltage on the generator Windbelt with a diameter of 18 mm, thick magnet 2 mm, band width 20 mm, length of ribbon 60 cm, the number of windings in 2000, the wind speed of 4 m / s. Generate a voltage value stream optimization for 5 Volt, 146 mA and Power 0.73 mWatt large voltage generated Windbelt generator capable of powering the LED.Keywords: Windbelt, voltage optimization, neodymium magnet, ribbon
SISTEM MONITORING JARAK JAUH RADIASI GAMMA SECARA REALTIME BERBASIS WEB SERVER Rosyidi, Habib Sabil; Suseno, Jatmiko Endro; Arifin, Zaenal
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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Instruments gamma radiation monitoring system was successfully developed. The instrument can measure the value of radiation exposure in an environment or material. The system was designed using sensor instrumentation Geiger tube M4011 and NGMC Module V1 using a web data base server. Sensor Geiger tube M4011 used had detection capabilities between 0mR / h ~ 120mR / h ?Ray. Data v alues gamma radiation that has been detected by the sensor is processed by the Geiger tube M4011 Microcontroller Atmega 328. Microcontroller 328 then sends the data that has been read into the webbased database serverusing Internet network GSM. In this system use web interface that allows users to monitor gamma value, without requiring a special receiving station. Basedon the results of validation of the value of gammaray radiation from the Geiger Counter, by means of Geiger Muller standard, Geiger counters and Geiger Muller has value misprint in a row in the lab ecology (4:06 ± 0:21) and (4:08 ± 0.20), at a distance of 4 cm material cesium 137 (9:20 ± 0.20) and (10.2 ± 0:28), and the material cobalt 60 (22:36 ± 0.40) and (22:04 ± 0.36), at a distance of 8 cm material cesium 137 (5.94 ± 0.20) and (5.78 ± 0.21), and materials cobalt 60 (15.96 ± 0.40) and (16:04 ± 12:23), at a distance of 12 cm material cesium 137 (4.76 ± 0:13) and (4:52 ± 0:16), and the material cobalt 60 (11.72 ± 0.21) and (12:46 ± 12:22).  
SISTEM INTEGRASI KEAMAN DAN KENYAMAN LIFT MENGGUNAKAN TAG-RFID PADA BERBAGAI OBYEK VITAL Zia Kusuma, Hudzaifah Hazazi; Suseno, Jatmiko Endro; Priyono, Priyono
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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This paper discusses the security system of lift devices and rooms that  integrated with one Radio Frequency Identification (RFID) device. The RFID tags are small, wireless devices that help identify objects that  can provide convenience, security and convenience for users  to improve service quality base on on the Arduino Mega 2560 microcontroller. The results of control integrated system design of between elevator doors with private rooms and other facilities can be done well. In this design, the visitor management system becomes the central integrated security system because only visitors who have access can utilize various facilities in accordance with the existing code in RFID, so this result is very potential to be applied for various control vital objects for more secure system security. Keyword: RFID, Security system, Arduino, Microcontrol
RANCANG BANGUN SISTEM PENGAMAN KEBOCORAN GAS LPG (LIQUEFIED PETROLEUM GAS) MENGGUNAKAN MIKROKONTROLER Ismai, Reza Lutfi; Suseno, Jatmiko Endro; Suryono, Suryono
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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Design of LPG gas leakage safety system using microcontroller has been made in this research. The purpose of this research is to make LPG gas sensor circuit to detect LPG gas concentration and make automation systems for LPG gas leakage protection. LPG gas leakage protection system can be applied for the use of LPG gas safely. Component to detect LPG gas concentration use sensor MQ 5 which can gives resistance as the output value which can be converted into voltage through the voltage devider circuit so that it can be read by microcontroller with ADC feature. The LPG gas concentration and the output voltage on the sensor will be displayed via LCD 16x2. When LPG gas leak occurs the LPG gas concentration detected  by sensor MQ 5 and then microcontroller will do automation such a modified regulator with a servo motor will close the LPG gas flow, buzzer will be active, the LED will be active and the relay will  exhaust LPG gas that came out due to leakage. The automation has different treatments according to the concentration range of detected LPG gas. The range of gas concentration is ppm < 500, 500 < ppm <1000 and ppm >1000. Sensor circuit can detect gas concentration up to 33000 ppm. The test result on LPG gas leak safety automation system showed that the system can work in the event of leakage of LPG gas and effective to reduce LPG gas concentration up to safe zone.Keywords: microcontroller, sensor, LPG gas, gas exhaust, automation system, exhaust system
IDENTIFIKASI UNSUR-UNSUR BERDASARKAN SPEKTRUM EMISI MENGGUNAKAN JARINGAN SYARAF TIRUAN Prasetyo, Eko; Azam, Muchammad; Suseno, Jatmiko Endro
JURNAL SAINS DAN MATEMATIKA Volume 15 Issue 1 Year 2007
Publisher : JURNAL SAINS DAN MATEMATIKA

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 ABSTRACT---Neural network program for elements identification based on its emission spectrum has been made using backpropagation method. The programming language which was used is MATLAB 7.0. This neural network has a single hidden layer. Training and testing data are emission spectrum data which are emission wavelength from each element. Training process was done by introducing known emission spectrum data to neural network program. Neural network program has been successful to identify elements based on its emission spectrum. Training process will be faster if we adjust the number of hidden layer?s neuron as 100, the value of learning rate as 0,049 and the value of momentum as 0,98. The neural network accuracy of identifying elements is determined by the value of error target. Error target. The value of target error about 10-2 has accuracy 97,14% and the value of target error about 10-4 has accuracy 100%. Keywords: Neural network, backpropagation method, and emission spectrum
SOLVING A SYSTEM OF LINEAR EQUATIONS BY QR FACTORIZATION METHOD FOR TEMPERATURE AND ALTITUDE REGRESSION MODEL AGAINST SPONTANEOUS-POTENTIAL Widowati, Widowati; Setyawan, Agus; Mustafid, Mustafid; Nur, Muhammad; Sudarno, Sudarno; Harmoko, Udi; Adhy, Satriyo; Gunawan, Gunawan; Subagio, Agus; Tjahjana, Heru; Sulpiani, Ririn; Riyanto, Djalal Er; Suhartono, Suhartono; Mukid, Mochammad Abdul; Suseno, Jatmiko Endro
JURNAL SAINS DAN MATEMATIKA Volume 22 Issue 3 Year 2014
Publisher : JURNAL SAINS DAN MATEMATIKA

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Many real problems can be represented in the form of multiple linear regression equation. One of those is the relationship between the variables of temperature and altitude of the spontaneous-potential. In order to determine the parameters of the regression equation, the least squares method was used. From here, there was obtained the system of linear equations. In this paper, to solve systems of linear equations, the exact method was used as the exact solution is certainly better than the approached solution. The method used was the QR factorization method. At the QR factorization, the system of linear equations was written in form of matrix equation. Then, the coefficient matrix which the number of rows is m and number of columns is n with linearly independent columns was factored into the matrix Q which has the same size with the matrix A, with orthonormal columns and matrix R was upper triangular. Furthermore, by backward substitution, it could be obtained the exact solution of linear equation system. As verification of this proposed method, a case study was given using data of temperature, altitude, and spontaneous-potential in the geothermal manifestations area, Gedongsongo, Mount Ungaran Semarang. From here, it was obtained the parameters of exact multiple linear regression model which states the relationship between temperature and altitude toward the spontaneous-potential.