Kalpana N. Reddy

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The amenability and reproducibility of a tissue culture-independent Agrobacterium tumefaciens-mediated transformation strategy was analyzed in field bean and the stability of the transgenes was examined. The protocol involves in planta inoculation of embryo axes of germinating seeds and allowing them to grow into seedlings ex vitro. Transformants were(More)
Arterial blood oxygen saturation (SpO<inf>2</inf>), a vital measure of amount of oxygen that is dissolved in blood, is estimated using commercial pulse oximeter by recording the Photoplethysmographic (PPG) signals. Ever since the invention of pulse oximetry, reliable and accurate estimation of arterial blood oxygen saturation (SpO<inf>2</inf>) has been a(More)
Arterial blood oxygen saturation (SpO<inf>2</inf>) is effectively measured by the pulse oximeter. The common cause of pulse oximeter failure, in error- free SpO<inf>2</inf> estimation, is motion artifact (MA) corruption in the detected PPG signals. For a reliable and a low failure rate SpO<inf>2</inf> estimation, the pulse oximeters must be provided with a(More)
Electrocardiogram (ECG) signal gets corrupted with artifacts, such as 50/60 Hz power line interference (PLI), electromyogram (EMG) and baseline wander, making it difficult to diagnose the cardiac abnormalities. This paper presents autoregressive (AR) modelling of cumulants for enhancement of ECG signals. Higher order spectral (HOS) cumulants possess many(More)
Continuous monitoring of respiratory activity is required in many clinical settings from emergency departments to operating theatres and high dependency intensive care units. Current techniques such as nasal thermistors, capnography and monitoring of transthoracic impedance are prone to movement artifact or difficult to use in a continuously ventilating(More)
Extraction of respiration rates from electrocardiogram (ECG) and blood pressure (BP) signals would be an alternative approach for obtaining respiration related information. This process is useful in situations when, ECG, or BP but not respiration is routinely monitored or in cases where, the cardiac arrhythmias are to be studied in correlation with(More)
Respiratory rate is a vital parameter which gives an indication of abnormal respiratory conditions. There are various methods which can be utilized to obtain breathing rate but they have certain drawbacks. In addition to SpO2 and heart rate measurement, PPG signal obtained from pulse oximeter can be used to get respiratory information which avoids use of(More)
Abelmoschus esculentus (okra) is one of the polysaccharide rich crop plants. The polysaccharides interfere with nucleic acids and protein isolation thereby affecting the downstream molecular analysis. So, to understand the molecular systematics of okra, high quality DNA, RNA and proteins are essential. In this study we present a method for extracting(More)
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