No abstract

Abstract-Mixing of two fluid is an essential process for most of microfluidic device such as Lab-On-Chip (LOC) device. Mixing performance in this microsystem mainly relies on effective and rapid mixing of sample and reagent. Therefore, the development of oblique groove micromixer for application of blood and reagent mixing has been carried out. In this study, two types of fluids are involve in the mixing, which are the blood and reagent. Two mixer namely Y-Shape mixer and Y-Shape oblique groove mixer are designed and simulated using CoventorWare2010 software at low Reynolds number. The development of oblique groove micromixer are obtained by analyzing the geometries effect of groove pattern on mixing performance. In this study, it has been demonstrated that the YShape mixer with the oblique groove structure located at the floor of the mixing channel can increase the mixing performance. Thus, the simulation result in this study shows that mixing performance can be enhanced when depth and width of oblique groove having 40% of the channel width with the angle of oblique groove is 45º.

No abstract

No abstract

Hiking is popular in Malaysia because of the geographical factors that have a lots of mountains. Since this is an extreme activity, it gives a lot of risk for the hikers. There were 134 incidents in the mountains reported during 1996 until 2014 where 52 cases are about missing people. When encounter with missing people cases, it is difficult to pinpoint the last location of victim. Therefore, this project aimed to help the rescuer by providing them information of the victim’s last location by creating a tracking system using RFID in order to store data on each checkpoint along the hiking trails in memory card. This system also equipped with wifi which allowed the system send notification using Telegram Apps. The rescuers can extract the data from the memory card from each checkpoint to trace the last location of the victim before reported missing. By having this information, the rescuers will save a lot of time because they can estimate from which area they should start the search and rescue operation.