S. C. Prasannakumar

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Biological signals are nonlinear and non periodic in nature. The signals show self-similarity in various scales of time. Heart rate variability is a noisy time series having self-similar and self affine characteristics. Its analysis is commonly used in accessing the autonomic nervous system of the human body and in diagnosing of cardiac status and other(More)
Breast Cancer is one of the most horrible and dangerous diseases that affect women health. This paper aims to detect the breast cancer in a non-invasive manner with the help of mammograms and enables advanced characterization of the lesion using following steps: mammogram enhancement using adaptive median filter, cancer area detection using seed value based(More)
Biological signals are nonlinear and non periodic in nature. The signals show self-similarity in various scales of time. Heart rate variability is a noisy time series having self-similar and self affine characteristics. Its analysis is commonly used in accessing the autonomic nervous system of the human body and in diagnosing of cardiac status and other(More)
A Blood cell is a cell produced through haematopoiesis. In mammals, these fall into three general categories: Red blood cells, White blood cells and Platelets. Red blood cells carry oxygen to all parts of the body and carbon dioxide using haemoglobin. White Blood Cells are form immune system of body which fight against foreign invaders in the body.(More)
PURPOSE In India, HIV-2 epidemic is alongside with HIV-1. Blood banks are introducing nucleic acid testing (NAT) for screening. The limitation of NAT systems is the inability to detect HIV-2. MATERIALS AND METHOD An analysis of HIV screening of a blood bank at a tertiary care center from 1998 to 2007 was carried out. RESULTS A total of 175026 donors(More)
Vibrational spectra of 2-methyl-3-nitrophenyl isocyanate and 4-methyl-2-nitrophenyl isocyanate, in the spectral region 4000-100 cm(-1), have been measured and assigned. Conformational and harmonic frequency analyses have been performed at B3LYP/6-311G(∗) level of calculations. The two stable conformers, cis and trans, have been computed for each of the(More)
PURPOSE In all CD4+/CD8+ T-cell estimation systems, the reagents used are liquid in nature and have to be transported and stored at 2°-8°C. This causes problems in countries where the ambient temperature is high for most parts of the year or where the laboratories are at remote places. MATERIALS AND METHODS We evaluated a dry format of CD4/CD8 reagents(More)
The first HIV-1 marker that appears in blood following infection is HIV-1 RNA and usually the load is in millions of copies/ ml preceding seroconversion. A 24-year-old pregnant woman, gravida 2, parity 1 was tested for HIV as part of antenatal screening. Three samples were collected and tested from this individual over a period 70 days. The HIV-1 RNA level(More)
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