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George Town, Malaysia

Gam L.-H.,Science University of Malaysia | Liang S.,Science University of Malaysia | Singh M.,Penang General Hospital
Journal of Biomedicine and Biotechnology | Year: 2010

Breast cancer is a leading cause of female deaths worldwide. In Malaysia, it is the most common form of female cancer while Infiltrating ductal carcinoma (IDC) is the most common form of breast cancer. A proteomic approach was used to identify changes in the protein profile of breast cancerous and normal tissues. The patients were divided into different cohorts according to tumour stage and grade. We identified twenty-four differentially expressed hydrophilic proteins. A few proteins were found significantly related to various stages and grades of IDC, amongst which were SEC13-like 1 (isoform b), calreticulin, 14-3-3 protein zeta, and 14-3-3 protein eta. In this study, we found that by defining the expression of the proteins according to stages and grades of IDC, a significant relationship between the expression of the proteins with the stage or grade of IDC can be established, which increases the usefulness of these proteins as biomarkers for IDC. Copyright © 2010 Seng Liang et al.

Lee U.,Inha University | Sankar D.S.,Science University of Malaysia
Mathematical Problems in Engineering | Year: 2010

The pulsatile flow of blood through catheterized arteries is analyzed by treating the blood as a two-fluid model with the suspension of all the erythrocytes in the core region as a non-Newtonian fluid and the plasma in the peripheral layer as a Newtonian fluid. The non-Newtonian fluid in the core region of the artery is represented by (i) Casson fluid and (ii) Herschel-Bulkley fluid. The expressions for the flow quantities obtained by Sankar (2008) for the two-fluid Casson model and Sankar and Lee (2008) for the two-fluid Herschel-Bulkley model are used to get the data for comparison. It is noted that the plug-flow velocity, velocity distribution, and flow rate of the two-fluid H-B model are considerably higher than those of the two-fluid Casson model for a given set of values of the parameters. Further, it is found that the wall shear stress and longitudinal impedance are significantly lower for the two-fluid H-B model than those of the two-fluid Casson model. © 2010 D. S. Sankar and U. Lee.

Hadi N.A.,University Technology of MARA | Ibrahim A.,University Technology of MARA | Yahya F.,University Technology of MARA | Ali J.M.,Science University of Malaysia
Proceedings - 2012 IEEE 8th International Colloquium on Signal Processing and Its Applications, CSPA 2012 | Year: 2012

Human head is one of the most detail parts of human body. Reconstruction of human head must be precise to avoid misinformation of the product. Furthermore, head reconstruction especially face is used in several significant applications such as face recognition, head surgery, and face simulation. This study employs cubic Beta-spline as the fitted curve based on its capability to maintain the second degree of continuity, and its shape parameters which can be controlled locally. 69 layers of 2-dimensional human head contours from Computerised Tomography (CT) images are used in this research. Contour points of each layer are extracted, and fitted with piecewise cubic Beta-spline curves. All the layers then stacked together and form a Beta-spline head wireframe. The result shows that Beta-spline gives necessary smooth images and preserves important features of the head and face. © 2012 IEEE.

Abdul Hadi N.,University Technology of MARA | Ibrahim A.,University Technology of MARA | Yahya F.,University Technology of MARA | Md Ali J.,Science University of Malaysia
AIP Conference Proceedings | Year: 2013

Branching is a process of connecting two adjacent contours called base and branch contours where the numbers of sub contours for each of both contours are different. All points between the contours have to be correctly paired to avoid a twisting surface. In contours connection, continuity is an issue to ensure the surface fit to the required smoothness. Therefore, two main steps to be focused in surface reconstructions are branching technique and surface continuity. This study used composite contour generation as the branching technique which generates an intermediate contour as combination of modified base and branch contours. Although the inserted new contour will disturb the position of original contours, the continuity can be preserved if the fitted surface is Beta-spline. Beta-spline is built with G2 continuity condition, and the changes of the data points position will not affect the continuity. Hence, surface fitting using Beta-spline will simplify the reconstruction process. The result shows several images can be generated using Beta-spline where composite contour is used for branching problem. The result then compared with the original image and it is shown that surface reconstruction using Beta-spline can give a good result especially for the branching case. © 2013 AIP Publishing LLC.

Hadi N.A.,University Technology of MARA | Halim M.S.A.,University Technology of MARA | Ibrahim A.,University Technology of MARA | Sulaiman H.,University Technology of MARA | And 2 more authors.
Proceedings - International Conference on Intelligent Systems, Modelling and Simulation, ISMS | Year: 2015

Accuracy is one of the most important requirements of a reconstructed surface. However, this criterion needs high computation too since large number of data points is involved. Therefore, distribution of data points is the best way to solve this problem. In this paper, dyadic rational technique is employed in segmenting the data points into several processors. Then, the surface reconstruction process is done independently in each processor. Finally, all the surfaces are combined in the master processor. This project used low-cost self-developed parallel laboratory named Ars Cluster in UiTM Shah Alam. Therefore, the parallel process in this project is time-saving and cost-saving. © 2014 IEEE.

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