Browsing by Author "Bansal, R.K."

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    Microprocessor based harmonic restraint differential protection scheme for a transformer
    (1992) Bansal, R.K.; Joshi, B.K.; Singh, S.P.; Bandopadhaya, R.N.
    This paper presents a microprocessor based differential protection scheme for a single phase transformer with harmonic restraint feature to avoid mal-operation during inrush current conditions. The protection scheme is implemented by means of a single microprocessor of intel's 8088 type. The relay has been tested satisfactorily by an arranged circuit for differential protection of a test transformer in the laboratory for the above condition. The test results indicate that the relay detects the inrush or other abnormal conditions satisfactorily within an overall time of about 26 μs. © 1992.
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    Patterns and determinants of dyslipidaemia in 'Young' versus 'Not so Young' patients of coronary artery disease: A multicentric, randomised observational study in northern India
    (Elsevier B.V., 2012) Sinha, Nakul; Kumar, Sudeep; Rai, Himanshu; Singh, Neha; Kapoor, Aditya; Tewari, Satyendra; Saran, R.K.; Narain, V.S.; Bharadwaj, R.P.S.; Bansal, R.K.; Saxena, P.C.; Sinha, P.R.; Gupta, P.R.; Mishra, Mukul; Jain, Praveen; Pandey, C.M.; Singh, Uttam; Agarwal, S.S.
    Aims: The aims of the study were to ascertain difference in lipid levels of 'Young' onset of coronary artery disease (CAD) (≤ 45 years) vs. 'Not so Young' onset of CAD (≥ 55 years) among north Indians and also to investigate determinants of 'dyslipidaemia' in CAD patients. Methods: This was a prospective, multicentric, randomised, observational study carried in eight cen- tres of UP, India. All blood investigations were performed employing a central laboratory. Results: Out of a total 435 patients studied, 218 were in the 'young group' (YG) and 235 were in the 'Not so Young Group' (NSYG). Dyslipidaemia was more common in YG as evident by significantly higher levels of total cholesterol, triglycerides, low- and very low-density lipoprotein cholesterol as compared to NSYG. Diabetes, hypertension, urban lifestyle, and family history of CAD were found to be important determinants of dyslipidaemia in YG. Conclusion: We conclude that lipid levels among north Indians are significantly higher in younger patients with CAD when compared with elderly. © 2012, Cardiological Society of India. All rights reserved.
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    Short-term outcome of acute inferior wall myocardial infarction with emphasis on conduction blocks: A prospective observational study in Indian population
    (Turkish Society of Cardiology, 2017) Kumar, Varun; Sinha, Santosh; Kumar, Prakash; Razi, Mohammed; Verma, Chandra Mohan; Thakur, Ramesh; Pandey, Umeshwar; Bhardwaj, Rajpal Singh; Ahmad, Mohammed; Bansal, R.K.; Gupta, Shalini
    Objective: The primary aim of the present study was to evaluate the complications, particularly conduction blocks, subsequent morbidity and mortality, and effect of thrombolytic therapy in Indian patients with inferior wall myocardial infarction (IWMI). Methods: This was a prospective, observational, single-center study conducted at LPS Institute of Cardiology, Kanpur, from December 2011 to May 2014. Patients who presented with typical chest pain and were subsequently diagnosed by standardized diagnostic criteria as having IWMI were enrolled. Patients were grouped on basis of conduction abnormalities, right ventricular (RV) infarction and thrombolytic treatment. Each group was analyzed for comparison of complication profile and mortality. Results: Of 573 patients with IWMI enrolled in the study (mean age: 58.90±12.3 years), 81.2% were male, 225 (39.3%) had conduction blocks, and 189 (32.9%) had RV infarction. In patients with conduction blocks, mortality occurred in 27 patients (12.0%) in contrast to 3.4% of patients without conduction block (p<0.03). Also, there were 27 cases of in-hospital mortality in patients with RV infarction compared with 9 cases in patients without RV infarction (p<0.01). Thrombolytic therapy significantly reduced mortality in patients with IWMI (p<0.001). A significant reduction was observed in cardiogenic shock (p=0.002), severe mitral regurgitation (p=0.007), and left ventricular failure (p<0.001) in patients undergoing thrombolytic therapy. Conclusion: In Indian patients with IWMI, incidence of conduction blocks was higher than previously reported studies. Major complications such as atrioventricular block and RV infarction are associated with increased mortality and poor clinical outcomes. Thrombolytic therapy has a beneficial role in reduction of mortality rate and other complications. © 2017 by Turkish Society of Cardiology.
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    Two Problems in the Interpretation of Meiosis in Plants
    (1940) Singh, B.N.; Sampath, S.; Bansal, R.K.
    Two problems in interpretation of meiosis were noticed in a study of meiotic chromosomes of Tulipa and Rhoeo. The first is as follows: The prophase nuclei of Tulipa is a dense tangle of threads. Invariably and smoothly the tangle resolves itself into bivalents and trivalents by metaphase. The problem arises, how is such a pairing mechanically possible? The second problem is as follows: The metaphase chromosomes of Rhoeo are linked to each other end to end. Each chromosome is composed of two closely fitting spiral chromatids. It is improbable that the terminal attachments are due to terminalised chiasmata. An alternative solution is wanted. The problem arises only if (i) the facts are correct (ii) if the chromosomes retain their identity throughout the division. (i) is corroborated by other workers' publications and (ii) is an incontrovertible assumption. It is suggested that both the problems have a common solution. Possibly a certain arrangement of chromosomes in the premeiotic telophase facilitates the prophase pairing in Tulipa and originate metaphase figures in Rhoeo. © 1940, Japan Mendel Society, International Society of Cytology. All rights reserved.