Development of MATLAB Based Software for the Analysis of the Impedance Data Obtained from in-House Developed Bio-Impedance Analyzer

Biological samples are sensitive to physical changes, mechanical as well as electrical. When any force is applied or temperature of the environment is increased or any torsion given to the system or electricity flows through it then it shows some changes behaviorally which in some distinguishable into eyes and is predictable. But there are two types of observations present which is taken into consideration. One is qualitative and other one is quantitative. Qualitative way is meant just to detect whether changes happening. But when it comes to comparison at that time one needs proof in which case this qualitative study fails. Again as biological samples are very sensitive to changes and different sample have different properties ,so they act differently in different time duration to the changes. Some changes such as due to electrical flow the changes in the behavior of the sample might not be visible but it can be predicted by the proposed method in quantitative approach. This study shows an easy approach to show the changes due to electrical current flow through the system. This quantitative approach also help in finding the stability as well as the utility of the model both in estimated and predicted cases. Here the well-known impulse response, Nyquist plot and Bode plot and the location of poles and zeros were used for detail analysis of the model behavior. Here hydrogel is taken as the dummy model for all the studies. This approach can be proposed in industrial way for samples stability prediction, its utility in required conditions and the productivity of the designed sampl

VOLUNTARY CONTROL OF BREATHING ACCORDING TO THE BREATHING PATTERN DURING LISTENING TO MUSIC AND NON-CONTACT MEASUREMENT OF HEART RATE AND RESPIRATION

We investigated if listening to songs changes breathing pattern which changes autonomic responses such as heart rate (HR) and heart rate variability (HRV) or change in breathing pattern is a byproduct of listening to songs or change in breathing pattern as well as listening to songs causes changes in autonomic responses. Seven subjects (4 males and 3 females) participated in a pilot study where they listened to two types of songs and used a custom developed biofeedback program to control their breathing pattern to match the one recorded during listening to the songs. Coherencies between EEG, breathing pattern and RR intervals (RRI) were calculated to study the interaction with neural responses. Trends in HRV varied only during listening to songs, suggesting that autonomic response was affected by listening to songs irrespective of control of breathing. Effective coherence during songs while spontaneously breathing was more than during silence and during control of breathing. These results, although preliminary, suggest that listening to songs as well as change in breathing patterns changes the autonomic response but the effect of listening to songs may surpass the effect of changes in breathing. We explored feasibility of using non-contact measurements of HR and breathing rate (BR) by using recently developed Facemesh and other methods for tracking regions of interests from videos of faces of subjects. Performance was better for BR than HR, and over currently used methods. However, refinement of the approach would be needed to get the precision required for detecting subtle changes

Preparation, Characterization and Assessment of the Novel Gelatin–tamarind Gum/Carboxymethyl Tamarind Gum-Based Phase-Separated Films for Skin Tissue Engineering Applications

<p>The current study delineates the development of novel gelatin–tamarind gum/carboxymethyl tamarind gum-based phase-separated films for probable skin tissue engineering applications. Polyethylene glycol was used as plasticizer. The films were characterized thoroughly using mechanical tester and impedance analyzer. Cell proliferation ability and drug release properties of the films were investigated. Mechanical studies indicated composition-dependent stress relaxation properties. Polysaccharide containing films supported better proliferation of human keratinocytes as compared to control. Drug-loaded films showed good antimicrobial properties against <i>Escherichia coli</i>. Analysis of the results indicated that the prepared films may be tried as matrices for skin tissue engineering.</p