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Effects of thermal radiation on mixed convection flow over a permeable vertical shrinking flat plate in an oldroyd-b fluid

Kohilavani Naganthran, Roslinda Nazar, Ioan Pop

Sains Malaysiana, 2018;47:1069-1076.

This study offers the numerical solutions for the problem of mixed convection stagnation-point flow along a permeable
vertical flat plate in an Oldroyd-B fluid. The present investigation considers the effects of thermal radiation and heat
generation/absorption in the fluid flow. The similarity transformation simplifies the complex model and the bvp4c function
generates the numerical solutions according to the variations in the governing parameters. A higher degree of shrinking
hastens flow separations. The dual solutions are visible in the range of buoyancy opposing flow. The results from this study
may be useful for the scientist to understand the behaviour of the dilute polymer solutions in the industrial applications,
for example, the drag reduction in pipe flows.
Fulltext Embedding Islamic dietary law into an HACCP approach for application to the poultry slaughtering and processing industry

Kohilavani, Zzaman, W., Abdullah, W.W.N., Tajul, A.Y.

International Food Research Journal, 2015;22(6):2684-2690.
MyJurnal

Since early 2000, Malaysian food-export industries have recognised the demand for food
compliant with Islamic dietary law (halal), with primary consumer choices based on quality
and safety. The lack of documented monitoring for health hazards and haram substances led
to the withdrawal of certification. The HACCP-based halal quality-assurance standards were
developed as a result, using the HACCP criteria for safety, religious dietary requirement and
quality. Halal critical control points (HlCCP) are identified using HACCP criteria and a question
tree on HALAL processing and storage. This approach harmonizes and unifies halal processing
with the specific food industry via an HACCP–based halal quality-assurance system.
Fulltext Unsteady stagnation-point flow and heat transfer of a special third grade fluid past a permeable stretching/shrinking sheet

Naganthran K, Nazar R, Pop I

Sci Rep, 2016;6:24632.
PMID: 27091085 DOI: 10.1038/srep24632

In this paper, the unsteady stagnation-point boundary layer flow and heat transfer of a special third grade fluid past a permeable stretching/shrinking sheet has been studied. Similarity transformation is used to transform the system of boundary layer equations which is in the form of partial differential equations into a system of ordinary differential equations. The system of similarity equations is then reduced to a system of first order differential equations and has been solved numerically by using the bvp4c function in Matlab. The numerical solutions for the skin friction coefficient and heat transfer coefficient as well as the velocity and temperature profiles are presented in the forms of tables and graphs. Dual solutions exist for both cases of stretching and shrinking sheet. Stability analysis is performed to determine which solution is stable and valid physically. Results from the stability analysis depict that the first solution (upper branch) is stable and physically realizable, while the second solution (lower branch) is unstable.
Effect of HbE heterozygosity on the measurement of HbA1c

Sthaneshwar P, Shanmugam H, Swan VG, Nasurdin N, Tanggaiah K

Pathology, 2013 06;45(4):417-9.
PMID: 23635828 DOI: 10.1097/PAT.0b013e32836142eb

AIM: Measurement of HbA1c provides an excellent measure of glycaemic control for diabetic patients. However, haemoglobin (Hb) variants are known to interfere with HbA1c analysis. In our laboratory HbA1c measurement is performed by Variant II turbo 2.0. The aim of this study is to investigate the influence of HbE trait on HbA1c analysis.
METHODS: Haemoglobin variants were identified by HbA1c analysis in 93 of 3522 samples sent to our laboratory in a period of 1 month. Haemoglobin analysis identified HbE trait in 81 of 93 samples. To determine the influence of HbE trait on HbA1c analysis by Variant II Tubo 2.0, boronate affinity high performance liquid chromatography (HPLC) method (Primus PDQ) was used as the comparison method. Two stage linear regression analysis, Bland Altman plot and Deming regression analysis were performed to analyse whether the presence of HbE trait produced a statistically significant difference in the results. The total allowable error for HbA1c by the Royal Australasian College of Pathologists (RCPA) external quality assurance is 5%. Hence clinically significant difference is more than 5% at the medical decision level of 6% and 9%.
RESULTS: Statistically and clinically significant higher results were observed in Variant II Turbo 2.0 due to the presence of HbE trait. A positive bias of ∼10% was observed at the medical decision levels.
CONCLUSION: Laboratories should be cautious when evaluating HbA1c results in the presence of haemoglobin variants.