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Unggul P. Juswono
Fakultas MIPA Universitas Brawijaya Jalan Veteran Malang 65145
Environmental Science

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Estimation of Radiation Dose Calculation on Non Static Organs Novan Habiburrahman; Johan A.E. Noor; Unggul P. Juswono
Natural B, Journal of Health and Environmental Sciences Vol 2, No 1 (2013)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (16.417 KB) | DOI: 10.21776/ub.natural-b.2013.002.01.6

Abstract

In this study developed a program calculating the estimated radiation dose to the cancer by using a program that can run on a variety of computer operating systems platforms. The program used is a Java application programming interface (API) Greenfoot. The program determines the value of the accumulated dose received by each pixel in multiple beam irradiation with attenuation values obtained from the analysis of data Hounsfield value CT-scan. Hounsfield value of each pixel is generated based on the relationship value of grayscale linearity then. Hounsfield value of the CT-scan converted into the value of the gamma-ray attenuation. The dose received by the skin surface used as a reference to determine the length of time considered organ irradiation in static conditions on the program. Movement of the target irradiation in treatment may reduce the efficiency level of success. Moving organ radiation Treatment can be done. Radiation pulse period set for the radiation beam on the target in this phase organ reaches ± 60% of the maximum volume. A pulse rays will be effect the long exposure time can be calculated with the program.
Design of Cell Construction for Immunosensor Based Quartz Crystal Microbalance (QCM) Farida Wahyuni; Setyawan Purnomo Sakti; Unggul P. Juswono; Fenny Irawati; Nur Chabibah
Natural B, Journal of Health and Environmental Sciences Vol 1, No 4 (2012)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14.764 KB) | DOI: 10.21776/ub.natural-b.2012.001.04.2

Abstract

The biosensor is a sensor device that combines biological compounds with a transducer. One type of biosensor that uses mass change detection techniques are QCM (Quartz Crystal Microbalance). QCM is a sensor that works with the principle of quartz crystal frequency shift due to mass deposition on the surface of the crystal. QCM can be used to detect the reaction between the molecules, so that the QCM can serve as biosensors that can be used for the diagnosis of a disease. In the development of QCM immunosensor for there are many problems, one of which is the construction of the cell. Construction cells can be used as a reaction between biomolecules. Construction of cells made of white Teflon. To keep QCM sensors are not experiencing physical stress that can lead to rupture due to pressure from the Teflon o-ring is used as an insulating silicon. The results of this study indicate that the construction of the cells created can be used as a medium for immobilization of Bovine Serum Albumin observations (BSA) on the surface of the sensor.
Co-Authors Farida Wahyuni Fenny Irawati Johan A.E. Noor Novan Habiburrahman Nur Chabibah Setyawan Purnomo Sakti