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All Journal Journal of Aceh Physics Society Journal Of Syiah Kuala Dentistry Society
Zulfalina Zulfalina
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Dentistry Health Professions Physics

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Security Alarm for Motorcycle Ismail Ismail; Yulia Yulia; Zulfalina Zulfalina
Journal of Aceh Physics Society Volume 4 Number 1, March 2015
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.079 KB)

Abstract

A security alarm for motorcycle has been developed. This equipment consists of two parts. Part one is as a remote control, where it produces a radio signal with frequency of 37.5 MHz to turn on (activate) or to turn off alarm. Part two consists of sensor, receiver to receive signal from part one, and alarm. This part two will be attached to motorcycle while part one will be kept as a key by the owner of motorcycle. This equipment has been tested in the laboratory and it worked well. When part two is activated by pushing the “set button” in part one, then any movement of part two (as a movement of motor cycle) by about 20 cm from initial position will cause the alarm sounds continuously. The alarm will be off whenever the “reset button” in part one is pushed. Part one (a remote control) can activate part two with a maximum of twelve meter separation apart. This shows that the equipment can be used as a security alarm to prevent the motorcycle to be stolen in the future.
Study of hydroxyapatite based on Aceh's bovine bone coating on 314L stainless steel as a candidate for coating dental implant materials Irhamni IRHAMNI; Ireka SALSABILA; Fauzi FAUZI; Zulfalina ZULFALINA; Zulkarnain JALIL
Journal of Syiah Kuala Dentistry Society Vol 6, No 1 (2021): June 2021
Publisher : Dentistry Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jds.v6i1.21887

Abstract

ABSTRACT The use of hydroxyapatite (HAp) based on Aceh's bovine bone has been studied as a candidate for thecoating dental implant materials. In this study, the effect of sintering temperature and viscosity on the thickness ofthe hydroxyapatite layer on the 316L stainless steel plaque was observed. The hydroxyapatite was synthesized frombovine bone and then coated on the plate using the dip-coating method. Then, the plate surface was dried at 110 ºCfor 30 minutes and sintered with various temperatures of 500, 600, 700, and 800 ºC for 1 hour. The plate that hasbeen coated with hydroxyapatite was characterized using a thickness meter to measure the thicknesses of the layer.The water composition of 10 grams/L had a better effect on the thickness of the implant material coated with HApbeef bone compared to the water composition of 4, 6, and 8 (gram/L) (p0.05). On the other hand, the temperaturefactor did not affect changes in the thickness of the implant material (p0.05). The higher water composition (10grams/L) resulted in a decrease in the thickness of the implant material coated with beef bone HAp. KEYWORDS: Hydroxyapatite, sintering temperature, viscosity, dip-coating, thickness, coating dental implant
Co-Authors Fauzi Fauzi Ireka SALSABILA Irhamni Irhamni Ismail Ismail Yulia Yulia Zulkarnain Jalil