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Search Results: 1 - 10 of 902 matches for " Lakshmi Atla "
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A simple slide test to assess erythrocyte aggregation in acute ST-elevated myocardial infarction and acute ischemic stroke: Its prognostic significance
Lakshmi Atla,Uma Prasad,Venkatachalam Ch,Nageswar Rao G
Indian Journal of Pathology and Microbiology , 2011,
Abstract: A simple slide test and image analysis were used to reveal the presence of an acute-phase response and to determine its intensity in subjects of acute myocardial infarction and acute ischemic stroke. Erythrocytes tend to aggregate during an inflammatory process. Evaluation of erythrocyte adhesiveness/aggregation is currently available to the clinicians indirectly by erythrocyte sedimentation rate (ESR), but ESR correlates poorly with erythrocyte aggregation, hence a simple slide technique using citrated blood was used to evaluate erythrocyte aggregation microscopically and also by using image analysis. Aims: (1) To study erythrocyte aggregation/adhesiveness by a simple slide test in subjects with acute ST-elevated myocardial infarction (STEMI), acute ischemic stroke and healthy controls. (2) To study the prognostic significance of ESR and erythrocyte aggregation/adhesiveness test (EAAT) in predicting the outcome after 1 week in subjects of acute myocardial infarction and acute ischemic stroke. Patients and Methods: Three groups of subjects were included in the study; 30 patients of acute STEMI, 30 patients of acute ischemic stroke, and 30 subjects with age- and gender-matched healthy controls. Citrated blood was subjected to simple slide test and ESR estimation by Westergren′s method. Stained smears were examined under 400Χ and graded into four grades. Images were taken from nine fields; three each from head, body, and tail of the smear. The degree of erythrocyte aggregation was quantified using a variable called erythrocyte percentage (EP), by using the software MATLAB Version 7.5. A simple program was used to count the number of black and white pixels in the image by selecting a threshold level. Results: The mean ESR of the subjects with acute myocardial infarction (29 + 17.34) was significantly higher (P = 0.001) than the mean ESR of the control group (15.5 + 12.37). The mean EP of the subjects with acute myocardial infarction (69.91 + 13.25) was significantly lower (P < 0.001) than the mean EP of the control group (85.16 + 8.41). The mean ESR of the subjects with acute stroke (40.46 + 33.75) was significantly higher (P = 0.0005) than that of the controls (15.5 + 12.37). The mean EP of the stroke patients (70.59 + 11.30) was significantly lower (P < 0.001) than the mean EP of the controls (85.16 + 8.41). In subjects with acute myocardial infarction there was a significant negative correlation (r = 0.623) between ESR and EP. In acute stroke patients there was a significant negative correlation (r = 0.69) between ESR and EP. On performing standard er
Using Magnetic Nanoparticles to Eliminate Oscillations in Saccharomyces cerevisiae Fermentation Processes  [PDF]
Lakshmi N. Sridhar
Journal of Sustainable Bioenergy Systems (JSBS) , 2012, DOI: 10.4236/jsbs.2012.23004
Abstract: This article provides computational evidence to show that functionalized magnetic nanoparticles can eliminate the wasteful oscillatory behavior in fermentation processes involving Saccharomyces cerevisiae. There has been a consi-derable amount of work demonstrating the existence of oscillations in fermentation processes. Recently Reference [1] computationally demonstrated very simple strategies to eliminate the oscillations in the fermentation process. In the case of the of the Saccharomyces cerevisiae fermentation process it was shown that the addition of a little bit of oxygen would be successful in eliminating the oscillation causing Hopf bifurcations. The work of [2,3] demonstrated that oxygen mass transfer could be enhanced by using functionalized magnetic nanoparticles. The aim of this work is to incorporate the model used by [3] regarding the enhancement of oxygen mass transfer in the cybernetic Jones Kompala model [4] describing the dynamics of the Saccharomnyces cerevisiae fermentation process and demonstrate that using the functionalized magnetic nanoparticles can by altering the mass transfer coefficient actually succeed in eliminating the oscillatory behavior that plagues the Saccharomyces cerevisiae fermentation process. This occurs because the oscillation causing Hopf bifurcations are sensitive to the amount of input oxygen and increasing the oxygen mass transfer coefficient causes the disappearance of the Hopf bifurcation points.
Global Optimization of Continuous Fermentation Involving Zymomonas mobilis  [PDF]
Lakshmi N. Sridhar
Journal of Sustainable Bioenergy Systems (JSBS) , 2013, DOI: 10.4236/jsbs.2013.31008
Abstract:

Global steady-state optimization of Zymomonas mobilis fermentation process problems is performed to demonstrate the existence of multiple optimum solutions necessitating the use of a global optimization strategy. It is shown that the steady-state equations for the Zymomonas mobilis fermentation process can be reduced to a single equation which when used as a constraint results in yielding only one optimum solution, the global one.

Wireless Transmission Based Image Quality Analysis Using Uni-Level Haar Wavelet Transform  [PDF]
K. Senthamilselvan, Lakshmi Dhevi
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.78156
Abstract: This article deals with picture excellence examination by different parameters utilizing uni-level Haar wavelet transmission in excess of remote channel. The quality is analyzed based on power. The goal is towards reducing absolute power assigned in favour of picture compression and communication, while power in favour of every bit is reserved at prearranged value. Two Power Algorithms were presented. The greatest iterative power control calculation and Minimum Power Adaptation Algorithm (MPAA) are proposed. Those algorithms methodology was utilized for improving the aggregate power dispensed for multimedia such as picture because of input compression and transmission focus towards a settled bit source mutilation. Simulations were performed utilizing Haar wavelet than Additive White Gaussian Ration (AWGN) channel. Different picture excellence parameters, for example, Peak Signal to Noise Ratio (PSNR), M-Normalized Cross-Correla- tion, Average Difference; Structural Content parameters, for example, Maximum Difference, Normalized Absolute Error, Elapsed Time, CPU time, demonstrate a improved presentation with MPAA, Maximum Power Adaptation Algorithms (MAPAA) instead of Conventional Power Adaptation Algorithm (CPAA).
Financial Inclusion: Opportunities, Issues and Challenges  [PDF]
George Varghese, Lakshmi Viswanathan
Theoretical Economics Letters (TEL) , 2018, DOI: 10.4236/tel.2018.811126
Abstract: An all-inclusive financial system is essential for a nation as it augments efficiency and welfare by providing scope for secure and safe saving practices and by facilitating a wide range of improved financial services. The focus of the present study is on identifying the opportunities, issues, and challenges of financial inclusion in India.
Unhealthy Cooking and Prevalence of Tuberculosis in Indian Women: A Case Study  [PDF]
Abha Lakshmi Singh, Saleha Jamal
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.37078
Abstract: Unhealthy cooking is one of the major cause of mortality and morbidity and a risk factor for occurrence of tuberculosis among Indian women. India is the TB burden country in the world and accounts for nearly 20 percent of global burden of tuberculosis. The present study establishes the association between unhealthy cooking conditions (use of biomass fuels/chulhas, cooking in multipurpose room, Non-ventilated kitchen, living in kutcha/semi-pucca houses) and prevalence of tuberculosis in women. This study is based on primary sources of data collected through questionnaire interviews from 2101 women respondents belonging to different income categories from Aligarh city. The study examines the socio-economic characteristics, cooking conditions, monitoring of indoor air quality of different types of kitchen locations using different types of fuels. Symptomatic linkages of tuberculosis with type of fuel use, kitchen locations and house type were analysed. The results show that the women using biomass fuels/chulhas cooking in non-ventilated kitchens and multipurpose room, living in kutcha/semi pucca houses were most prone to tuberculosis.
Outbreak Investigation of Cholera in a Slum of Northern India  [PDF]
Manoj Kumar, Vijay Lakshmi Sharma
Open Journal of Epidemiology (OJEpi) , 2014, DOI: 10.4236/ojepi.2014.44031
Abstract: Cholera is one of the oldest and best understood endemic diseases. An actual bacterial enteric disease, it is characterized in its severe form by sudden onset, profuse painless watery stools (rice-water stool), nausea and profuse vomiting early in the course of illness. Endemic and pandemics are strongly linked to the consumption of unsafe water, poor hygiene, poor sanitation and crowded living conditions. A rapid survey was conducted for the outbreak investigation on August 4, 2008. The objectives were to investigate the outbreak, risk factors for cholera and recommend control measures immediately. Questionnaire based random convenient sample based investigative study. 60 families were contacted by the public health students. Approximate 300 individuals were screened for cholera cases. Simultaneously six water samples were also collected from the contacted family. Microbiological test for Vibrio cholera and E. coli was conducted. Randomly six water samples were collected from the Rajive colony. Microbiological test for Vibrio cholera and E. coli was conducted from the department of Microbiology, PU. Vibrio cholera and E. coli were found absent, in all the samples. One sample was found positive for unidentified bacteria.
Understanding the Role of Monsoon Depressions on Intraseasonal Oscillations over Indian Sub-Continent  [PDF]
P. Suneetha, K. Naga Lakshmi
International Journal of Geosciences (IJG) , 2018, DOI: 10.4236/ijg.2018.94015
Abstract:
Summer monsoon and its synoptic, meso-scale systems provide 80% of total annual rainfall over India. Monsoon depressions are weak, low-pressure circulation within the monsoon trough that forms in the head Bay of Bengal and moves northwestward and westward across the Indian sub-continent during summer monsoon season. Another convective system from this planetary scale circulation is the Intraseasonal Oscillation (ISO) also occurs in the daily mode. It is very important to study the impact of monsoon depressions in synoptic scale on ISOs through its strength, frequency and duration. In the recent decades, frequency of monsoon depressions and sea surface temperature over head Bay is decreasing while the intensity is increasing over Bay of Bengal. The study brings out the relationship between the ISOs and monsoon depressions over Bay of Bengal through their structure and movement for the period 1990-2014. Composites of monsoon and no monsoon depression days are calculated and found that rainfall is mainly occupied over Kerala and Interior Peninsula within the range of 10 - 50 cm during monsoon depression days. Relative vorticity brings out that the shallower layer of convergence mainly from 1000 - 850 hPa level and a deeper layer of weak divergence above it is mainly associated with the depression. Next, thermodynamic structure of monsoon depression and its intensity is directly proportional to the increasing of CAPE. Wavelet spectrum also indicates the intraseasonal oscillations are very active during monsoon depression days. Finally this study helps to bring out plausible reasons through circulations, dynamic and thermodynamic characteristics involved in monsoon depression days in association with the ISOs.
Does “Yummy” Food Help You Grow and Avoid Illness? Children's and Adults' Understanding of the Effect of Psychobiological Labels on Growth and Illness
Lakshmi Raman
Child Development Research , 2011, DOI: 10.1155/2011/638239
Abstract: Three studies examined children's understanding of the role of psychobiological labels such as tasty (“yummy”) and not tasty (“yucky”) foods on growth and illness. Studies 1 and 3 examined the role of tasty and not tasty foods on height, weight, and illness, respectively. Study 2 controlled for the possibility that participants were responding to the positive and negative valence of the terms “yummy” and “yucky” in Study 1. Results revealed that young children entertain psychobiological causes for growth but not for illness. These results suggest that young children selectively apply psychobiological causes to explain different biological processes. 1. Introduction Research on children’s understanding of biological processes has primarily focused on children’s causal recognition of illness, physical development, and growth. The results of most of these studies have demonstrated that children as young as 3 years of age consistently employ biological causes for biological processes and that they reject nonbiological causes such as immanent justice (Backsheider et al. [1]; Inagaki [2]; Kalish [3]; Raman and Gelman [4]; Springer and Keil [5]; Springer and Ruckel [6]). However, research on children’s recognition of the impact of psychological factors on biological processes has generated mixed results. Some studies have demonstrated that young children and even adults entertain psychological factors for the origins of common contagious illness (Raman and Gelman [7]; Raman [8]; Schulz et al. [9]), whereas other studies have found that young children entertain biological causes for dual causal biological processes such as psychogenic illnesses (Notaro et al. [10]). One of the major limitations of these studies is that they have all primarily focused only on the biological process of illness. The following studies will further clarify this debate by examining another subdomain of biology that is of extreme importance but one that has received minimal attention—children’s understanding of the role of psychobiological factors. Psychobiological factors are factors that present an interaction of biological causes and psychological causes. There have been no studies that have examined the impact of an interaction of biological and psychological causes on biological processes, but there is a plethora of studies that have examined the role of psychological factors on the contraction of common contagious illnesses. The results of these studies have presented mixed results. Some studies have demonstrated that preschoolers maintain a strict demarcation between the
Posterior mediastinal hematoma – a rare case following a fall from standing height: a case report
Lakshmi Pasumarthy
Journal of Medical Case Reports , 2007, DOI: 10.1186/1752-1947-1-185
Abstract: A 76-year-old woman sustained blunt chest trauma resulting from a fall from standing height. She was diagnosed with a mediastinal hematoma, and did well with supportive care. Follow up CT angiograms on days 2 and 4 of hospital stay revealed a stable hematoma and she did not require any intervention.Mediastinal hematoma has been reported secondary to trauma, coagulation abnormalities and hematologic malignancies, but it not been reported secondary to a fall from standing height. Factors predisposing to a hematoma in this case were aspirin therapy and a modest elevation of INR secondary to chronic hepatitis C.Falls from a standing height are common in the elderly. The patients usually present with pain due to fractures or soft tissue injury. Occasionally more severe complications such as sub-dural hematoma may result from the trauma, but mediastinal hematoma has not been reported.A 76 year-old woman presented after falling in the bathroom. She had become dizzy and her face struck the edge of the sink as she fell. She landed on bilateral outstretched arms. She complained of severe pain in her shoulders and was taken to the emergency department. She received intravenous fentanyl. She became nauseated and vomited. Soon after that she complained of shortness of breath. On arrival at the emergency room, her room air oxygen saturation was 98% but later, during the episode of respiratory distress, it dropped to 85%. BP on presentation was 134/71, pulse rate was 74.Two weeks prior to the fall, a CT scan of the chest had been performed to evaluate persistent cough. The CT scan at that time did not reveal any masses or aneurysms. Past medical history was significant with a history of hepatitis C diagnosed in 2004, confirmed by serologic testing and biopsy. She also had acid reflux, coronary artery disease, requiring a stent to the left anterior descending artery in 2004, severe degenerative joint disease, and lumbar spine surgery in 1991.She was being treated with aspirin 81 mg
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