Articles
41 Documents
Search results for
, issue
"Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016"
:
41 Documents
clear
<![CDATA[RANCANG BANGUN SISTEM MONITORING KONDUKTIVITAS LISTRIK AIR MENGGUNAKAN WIRELESS SESNOR SYSTEM (WSS) ]]>
<![CDATA[Margo Utomo]]>;
<![CDATA[Suryono Suryono]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (877.22 KB)
<![CDATA[Water has many benefits one of which is a good conductor of electricity, because the water contains ions that can conduct electricity, the amount of water's ability to conduct electricity known as electrical conductivity or electrical conductivity (EC). The electrical conductivity of the water is in practice often used as parameters of water quality. Therefore the need for a monitoring electrical conductivity of water so that the levels of electrical conductivity in a body of water. The method used for water monitoring system for electrical conductivity using Wireless Sensor System (WSS). By using WSS data monitoring can be done at a distance, direct or realtime network using Wi-Fi. To know the symptoms of the changes that occur in the water sensor uses electrical conductivity of water. Values that comes out of analog value which is then converted into digital values by microcontroller ATSAM3X8E with features Analog to Digital Converter (ADC), then the data is sent to a computer using serial communication. The data sent is stored in a database at the station Remote Terminal Unit (RTU). The data has been stored subsequently sent to the Terminal Station Control Unit (CTU) using Wi-Fi networks. Data sent to CTU station can be accessed by accessing the IP address in a web browser. The results of the characterization of the sensor to a standard measuring instrument obtained the following equation y = 58,666x - 42929. Furthermore, the equation to be incorporated into the program the microcontroller then do the calibration. The results of the calibration of linear correlation coefficient (R) and standard deviation (δ), a conductivity sensor has R = 0.999 and δ = 129.76 μS / cm. Of data sent and received data error does not occur, so it can be ascertained that the data transmission no data is wrong, less, or increases. ]]>
<![CDATA[SISTEM IDENTIFIKASI KUALITAS DAGING SAPI DENGAN METODE PENGOLAHAN CITRA MENGGUNAKAN TELEPON SELULER DENGAN SISTEM OPERASI ANDROID ]]>
<![CDATA[Nurul Huda Prasetyo]]>;
<![CDATA[Kusworo Adi]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (402.362 KB)
<![CDATA[Research on Beef quality identification system with image processing method using android smartphone had been carried out at Diponegoro University electronic and instrument Physics Laboratory. In this research, a segmentation algorithm extents and extent of meat and fat classification decision tree. Which can be run on smart phones with Android as the operating system. Characteristics that are used to distinguish the quality of beef (marbling score) in this study is the extent of fat,and meat. From the research that has been done can be concluded that the developed system is able to perform image acquisition and identifying beef marbling score well. The system is designed using decision tree-based classification method and the results obtained in the testing accuracy of 90% and 84% on the acquisition of training at a distance of 30 cm.]]>
<![CDATA[ANALISIS REMBESAN PADA BENDUNGAN CENGKLIK MENGGUNAKAN METODE RESISTIVITAS KONFIGURASI SCHLUMBERGER DAN UJI PERMEABILITAS UNTUK MENGHITUNG DEBIT REMBESAN ]]>
<![CDATA[Fajar Waskito]]>;
<![CDATA[Tony Yulianto]]>;
<![CDATA[Dwiyanto Joko Suprapto]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (609.698 KB)
<![CDATA[Resistivity method is one of the geophysical method that used to determine the subsurface structure from the resistivity value. The research uses resistivity method with Schlumberger configuration. The measurement have been done in Cengklik Dam which is located in the Ngargorejo village, Ngemplak districts, Boyolali, Central Java. Cengklik dam is used for irrigation, fish farms and tourism. The conditions of Cengklik dam is awful. There are a lot of cracks on the dam body and a spring appears in the southwest of the dam. So, we assumed that there are seepages on the dam. We get the potential and current value from aquisition and they used to calculate the apparent resistivity. IP2WIN software use to calculate and modeling to get the true resistivity and depth of each layers. Then they used as an input on Progress software to get the 3 dimensional modeling using Rockwork 15 software. The model interpreted with geological information to know the lithology. There is a seepage area on the tuff layer and the discharge seepage obtained by using the Slide 6.0 software. The discharge amount of seepage as 9,4576x10-5m3/s.]]>
<![CDATA[ANALISIS PERHITUNGAN DOSIS SERAP TERAPI ROTASI DENGAN METODE TISSUE PHANTOM RATIO (TPR) PADA LINEAR ACCELERATOR (LINAC) 6 MV ]]>
<![CDATA[Ifa Istighfaroh]]>;
<![CDATA[Evi Setiawati]]>;
<![CDATA[Zaenal Arifin]]>;
<![CDATA[Sanggam Ramantisan]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (388.552 KB)
<![CDATA[This Research has been conducted for the absorbed dose calculation in rotational treatment with Tissue Phantom Ratio (TPR) method. The purpose of this study to determine the absorbed dose comparisons on rotational therapy based on calculations and measurements. The study was conducted in a solid water phantom with 100 cm SAD. The study was conducted on a square field area of 5 cm x 5 cm, 7 cm x 7 cm and 10 cm x 10 cm as well as on equivalent field area of 10 cm x 10 cm, consist of 8 cm x 13,3 cm and 9 cm x 11,5 cm area. The result is percentage of difference between the value of measurements and calculations dose on each field area. The field area which have percentage below the tolerance value is a 7 cm x 7 cm with the percentage of difference of 0.46%. For the field area of 5 cm x 5 cm has a percentage of difference of 2.65%, while the area of 10 cm x 10 cm and equivalent field area the percentage of difference were high at more than 3%.]]>
<![CDATA[PENENTUAN WAKTU PARO BIOLOGI TC99M MDP PADA PEMERIKSAAN BONE SCANNING ]]>
<![CDATA[Titi Purwati]]>;
<![CDATA[Wahyu Setiabudi]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (329.783 KB)
<![CDATA[Nuclear medicine is a branch of medical science to know the anatomy and physiology of the body. One type of nuclear medicine examination is the examination of bone scanning. According to UNSCEAR (United Nations Scientific Committee on the Effects of Atomic), examination of bone scanning is a type of diagnostic examination which has the largest contribution. Examination of bone scanning using a radiopharmaceutical activity is very high around 320-740 MBq. Because the activity of a given patient is very high, it is necessary to note a half-life in bone biology for radiation protection purposes. Has conducted research on 35 patients in the examination bone scanning to determine the biological half time and the correlation between activity and biological half time. Radioisotopes are used in this examination is Tc99m with farmaka MDP kit (Methylene Diphosponat) with a half-life of 6.03 hours. On examination, the MDP Tc99m radiopharmaceutical is injected intravenously into the patient's arm as much as 15-20 mCi. Furthermore, patients will wait for ± 3 hours and after the enumeration for 10 minutes. Imaging results obtained from the average of the beginning of 627493360 Bq activity and activity after 3 hours of 15290043.495 Bq. Then from the calculation of activity against time t obtained decay constant is effective with an average of 0.271 h1, the mean decay constants of physics-1 and the average 0,115 hours of biological decay constant of 0.156 h-1. The decay obtained from biological half time with an average of 4.434 hours. In this study also found a correlation between the activity after 3 hours with a half-life of -0.94 biology, because the correlation value close to -1 (negative one) then the relationship of these variables have a strong negative correlation. ]]>
<![CDATA[PENGUKURAN SIFAT OPTIS AKTIF BAHAN NAFTALENA DAN ANTRASENA DALAM MEDAN LISTRIK LUAR ]]>
<![CDATA[Fajri Inayat]]>;
<![CDATA[Ketut Sofjan Firdausi]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (547.9 KB)
<![CDATA[Naphthalene (C10H8) and anthracene (C14H10) are simetric organic matter. Both of them predicted didn’t have electrooptic characteristic. That characteristic will appear if we induce them with external electric field. In the examination, it was used source light incandescent lamp 100 W. The external electric field generated by HV DC generator of 0-7 kV. The electrooptics characteristic was determined by measuring the change of polarization angle of light as it passed through the difference concentration of naphthalene and anthracene while they were applied by external electric field.Based on the result of observation, change of polarization angle of the light was increasing at each different potential between naphthalene (range 0,30 – 10) and anthracene (range 0,10 - 0,70). Beside that, changes of polarization angle of the light was increase linearly to the increase of naphthalene concentration, while anthracene was not. These results consider for more research to do with alternative organic materials in photonic devices.]]>
<![CDATA[STUDI POLARISASI FLUORESENSI MENGGUNAKAN SAMPEL MINYAK SAWIT ]]>
<![CDATA[Aziel Nimrod Febriyanto]]>;
<![CDATA[Ketut Sofjan Firdausi]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (281.098 KB)
<![CDATA[This study was conducted to compare the changes in fluorescence polarization angle for fresh cooking palm oil, expired or used cooking oils with electrooptic method. The samples are one brands with a variety of palm cooking oil expired, two fresh palm cooking oil samples and two samples of used cooking oil. Used a green laser with a wavelength of 532 nm as light source. The results showed that most small changes in polarization angle experienced by the samples of fresh oil then becomes greater for expired and used cooking oil samples. The biggest polarization angle changes occur in used cooking oils and oil expired that shows the low quality of the sample. The results showed that the polarization by fluorescence is possible to be used as a complementary test oil quality parameter.]]>
<![CDATA[ANALISIS PENGGUNAAN POLYDIMETHYL SILOXANE SEBAGAI BOLUS DALAM RADIOTERAPI MENGGUNAKAN ELEKTRON 8 MeV PADA LINAC ]]>
<![CDATA[Dodi Junaedi]]>;
<![CDATA[Evi Setiawati]]>;
<![CDATA[Zaenal Arifin]]>;
<![CDATA[Sanggam Ramantisa]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (399.599 KB)
<![CDATA[Percentage depth dose at the Linac has not reached 100% on the surface and should be made an effort to treat skin cancer or skin cancer that is closer to the surface so that the maximum dose obtained cancer, one of the efforts is the use of bolus. The research reviewer feasibility of using polydimethylsiloxane as materials bolus in radiotherapy. Bolus made with a thickness of 3, 6, 9 and 12 mm with a size of 11x11 cm2, tomography image is then taken using a CT-scan to determine the CT-number that is used to calculate the density and compared to the density of mass and volume ratio. Bolus irradiated with electron 8 MeV at 100 MU for 60 seconds and measured the dose absorbed at a depth of 0; 0.5; 1.0; 1.5; 2.0 and 2.5 cm. The result of the calculation using the CT-number density is 1.24 ± 0.02 g /cm3 and the density calculation results using the ratio of the mass and volume was 1.25 ± 0.01 g / cm. Absorbed dose at the surface with the use of a bolus of 3, 6, 9 and 12 mm by 82.09%; 85.13%, 89.12% and 93.48%, while without using bolus which showed the value of absorbed dose amounted to 78.23%. Absorbed dose at a depth of 2.5 cm with the use of a bolus of 3, 6, 9 and 12 mm by 79.84%; 49.26%; 34.52% and 17.80%, while without using bolus which showed the value of absorbed dose amounted to 88.68%.These results show the density of the bolus polydimethyl siloxane has similarities with soft tissue density and may increase the dose of the surface and reduce the dose depth so polydimethyl siloxane may be one of the reference materials that can be used as a bolus in radiotherapy.]]>
<![CDATA[PEMODELAN BAWAH PERMUKAAN DAERAH PANASBUMI KALIULO BERDASARKAN DATA RESISTIVITAS KONFIGURASI SCHLUMBERGER DENGAN ALGORITMA JARINGAN SYARAF TIRUAN-BACKPROPAGATION ]]>
<![CDATA[Frysca Putti Muviana]]>;
<![CDATA[Agus Setyawan]]>;
<![CDATA[Rahmat Gernowo]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (469.644 KB)
<![CDATA[This research used secondary data configuration Schlumberger geoelectric method in the area of geothermal manifestations Kaliulo Mount Ungaran to implement the use of artificial neural network algorithm in geophysical this case to obtain the actual value of the thickness and resistivity. In this artificial neural networks do two processes, namely the training and testing, the training using synthetic data and on testing using field data Then in training the neural network produced the best architectural which is used train resilient propagation (train rp) with three hidden layers with each neuron in the hidden layer consist of 300 neuron, this architecture will be used in testing. The output of the test data is value of the thickness and true resistivity which can be modeled. Result modeling of data processing from ANN is almost the same with IPI2WIN, MSE value obtained is equal to 0.10519 and 0.088304 respectively on the thickness and resistivity actually. The result of 3D model shows the lower part of the earth's subsurface its rock consists as following: topsoil, clay, volcanic breccias, tuff and limestone. ]]>
<![CDATA[RANCANG BANGUN SISTEMMONITORING KADAR SALINITAS AIR MENGGUNAKAN WIRELESS SENSOR SYSTEMS (WSS) ]]>
<![CDATA[Febriana Tirta Kirana]]>;
<![CDATA[Suryono Suryono]]>
<![CDATA[ Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016 ]]>
Publisher : <![CDATA[Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (608.806 KB)
<![CDATA[Real time monitoring in designated location using remote observation has become one topic chosen to be efficiently developed because it can be observed and anticipated earlier when the water quality is decreasing. One of the indicators of water quality is salinity, which is being developed through this study by using remote measurement system (telemetry) using Wi-Fi network. To determine the change of the indicator, a salinity sensor was used to determine the level of salinity. The sensors were mounted on a Remote Terminal Unit (RTU) attach on the object being observed. Those sensors produced analog signal so the signal should be converted into digital signal using Analog to Digital Converter (ADC) on ATSAM3X8E microcontroller. The digital data were then sent using serial communication from microcontroller to computer. The data were saved in the database and sent to Control Terminal Unit (CTU) using Wi-Fi network. A characterization was then conducted to a series of sensors produced from the previous phase using standard equipment to ADC value and a formula of sensor characteristic to ADC value was calculated which results in salinity equation value on y = 0,049 x – 35,306. The formula was then used in microcontroller program which results in coefficient of correlation on salinity sensor as R = 0,993 with 0,025 ppt error. From the test on communication system between database in Remote Terminal Unit (RTU) and Control Terminal Unit (CTU), there is no additional and missing data from data sent and data received, so it can be concluded that there is no error.]]>
