Farzand Abdullatif
Universitas Jenderal Soedirman

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RANCANG BANGUN SISTEM PEMANTAU CURAH HUJAN SECARA REAL TIME MENGGUNAKAN SENSOR KECEPATAN ALIRAN FLUIDA DENGAN EFEK HALL Abdullatif, Farzand; , Hartono; Uletika, Niko Siameya
Prosiding Vol 3, No 1 (2012)
Publisher : Prosiding

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Abstract

Telah dilakukan penelitian tentang rancang bangun sistem pemantau curah hujan menggunakan sensor aliran air dengan efek Hall. Penelitian dimaksudkan untuk membuat sebuah sistem yang dapat memantau curah hujan secara real time. Metode yang digunakan dalam penelitian ini adalah eksperimen. Penelitian diawali dengan membuat sensor aliran fluida dengan konsep efek Hall. Sensor yang telah dibuat diintegrasikan dengan komputer menggunakan interface DAQ NI USB 6009. Guna keperluan akuisisi data diperlukan pemrograman yang dilakukan menggunakan software LabView 7.1. Sensor yang telah diintegrasikan dengan komputer yang telah terprogram menghasilkan sebuah sistem yang mampu mendeteksi curah hujan. Hasil karakterisasi yang dilakukan terhadap sensor menunjukkan sensor aliran air dengan efek Hall sudah berhasil menunjukkan respon berupa tegangan. Namun demikian karakterisasi terhadap waktu respon dan kestabilan masih kurang responsif dan kurang sensitif.
OPTIMIZATION OF COLLIMATOR NEUTRON DESIGN FOR BORON NEUTRON-CAPTURE CANCER THERAPY (BNCT) BASED CYCLOTRON 30 MeV Payudan, Aniti; Haryadi, Aris; Abdullatif, Farzand
Indonesian Journal of Physics and Nuclear Applications Vol 2 No 3 (2017)
Publisher : Fakultas Sains dan Matematika Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (680.235 KB) | DOI: 10.24246/ijpna.v2i3.128-136

Abstract

This research in BNCT has a goal to design a collimator that can be used for cancer therapy. Simulations were carried out by MCNPX software. A collimator is designed by cyclotron 30 MeV as a neutron generator. Independent variables varied were material and thickness of each collimator’s component to get five of IAEA’s standard of the neutron beam. The result is two collimator designs that can pass all IAEA’s standard. Those designs are cyclotron collimator I and cyclotron collimator II. Collimator designs obtained are tube collimator consisting of a cylindrical target 7Be length of 1.4 cm and radius 1 cm, a lead wall with thickness 23 cm, cylindrical heavy water moderator (D2O) with radius 3 cm. Filter Cd-nat for cyclotron collimator I with a thickness of 1 mm and a radius 3 cm. Cyclotron collimator II uses 60Ni with a thickness of 5 cm as a filter. The radius aperture is 3 cm. These two collimator designs can be used for cancer treatment with BNCT. Dosimetry calculation and manufacture of prototypes are needed to test the application of this design.
SENSOR KEBOCORAN ARUS LISTRIK WATER HEATER ELEKTRIK hartono, hartono; Sugito, Sugito; Abdullatif, Farzand
Jurnal Teori dan Aplikasi Fisika Vol 6, No 2 (2018): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.321 KB) | DOI: 10.23960/jtaf.v6i2.1504

Abstract

An electric current sensor detecting current leak into water flowing out from a water heater has been constructed. The sensor is made of a copper electrode implanted in a PVC pipe. It is subjected to tests in which the voltage is varied at constant resistance and otherwise the resistance is varied at constant voltage. The variation of the AC voltage is conducted from 0 to 220 volt whereas that of the resistance is from 1 KW to 100 KW. The 1 KW resistance is meant to represent the resistance of human skin in wet condition and the 100 KW represents that of dry insulated skin. Analysis shows that unpainful shock sensation surges at 30 V, 5.16 mA, with 1 KW resistance. In  the current leak condition at 220 V, unpainful shock is sensed at body resistance of 42 KW with 4,99 mA current.