Study and Review of Properties & Applications of Low Heat Cement

The purpose of this study was to study and analyze the properties and applications of low heat cement. This research method is a qualitative description, which is supported by secondary data collection from literature, journals and other references. The results of this study show that the application of the latest technology in creating and applying low heat cement resulted in an increase in cement strength for buildings within the Australian standard AS3972. This is because the low heat change is achieved by reducing the content of C_3 S and C_3. It is a compound that develops the maximum heat of hydration and increases C_2 S

Practical aspects of integrated 1D2D flood modelling of urban floodplains using LiDAR topography data

Flood risk, a major risk facing mankind today, is projected to aggravate in view of the future predictions pertaining to the assessment of climate change scenarios. Traditionally, flood risk assessment exercises of urban floodplains have been carried out using 1D model as well as 1D model with storage cells. In view of the recent availability of high quality Light Detection and Ranging (LiDAR) topography data, availability of higher computing capacities, developments in the numerical computing techniques and the merits of an integrated 1D2D computing modelling method, integrated 1D2D modelling has gained a momentum for strategic flood risk management (SFRM) and detailed urban flood risk analysis. The research discussed in this thesis evaluates this modelling method using high quality LiDAR data in light of the results from the traditionally used 1D model with storage cells modelling method. The research study was carried out using laboratory experimental observation data, hypothetical urban floodplain data and data for a section of the River Clyde and adjoining urban floodplain in Glasgow, a major city in Scotland, UK. It concludes that, while integrated 1D2D models are of much benefit for a detailed flood risk analysis, specific attention needs to be paid towards the lateral extents of 1D model and the source of the river bank elevations while integrating it with a 2D model, particularly so when such a study is carried out for urban floodplains; and that the high quality LiDAR data significantly facilitates Strategic Flood Risk Modelling (SRFM) of urban floodplains

A Novel Fault Tolerant Full Bridge DC/DC Converter for Photovoltaic application

Abstract: Power switches in converters are prone to open and short circuit faults. Faulty power switch in converters worsens the converter performance and it may result in failure of other devices also. Further when main power switch fails, it results in breakdown of entire system. Therefore for reliability improvement of full bridge DC/DC converter in PV system, this research paper presents a novel fault tolerant converter topology  for exact faulty power switch localization and isolation from main path so that redundant faulty power switch can be brought in action and still system will provide desired output power. The converter presented here need two redundant power switches and relays to provide fault tolerant competence. It has four operating states which are normal state, faulty state, fault diagnostic state and fault recovery state. In the technique presented here RMS current at given test points is computed and compared with threshold RMS current for determination of faulty power switch. Graph theory is used to show the topological equivalence of converter in normal and fault recovery states. Simulation and experimental results have shown that converter efficiency remains same in both normal and fault recovery state

Placenta in pregnancy induced hypertension

Background: Placenta is a predictor of outcome of pregnancy. Placental examination holds an important role in improving outcome of pregnancy. It is strategically located at feto-maternal interface and it acts like a record of pregnancy in which the cumulative effects of pregnancy related events and changes reflecting the intrauterine environment can be scrutinized. Objective of present study was to diagnose presence, if at all, of lesions of placenta and their nature in cases of pregnancy induced hypertension specifically in 2nd and 3rd trimester of pregnancy and to classify the lesions based on clinical presentation and to compare the results.Methods: This study is based on histopathological examination of placenta in cases of PIH over a period of three years, from May 2011 to April 2014. The study was carried out at a tertiary care hospital.Results: There were 280 (19.4%) cases of PIH amongst a total of 1440 cases. In these 280, 170 (60.72%) cases had severe PIH, 110 (39.28%) cases had mild PIH. Also, 180 (16.28%) cases revealed increased morbidity and mortality.Conclusions: Evaluation of placenta is an extremely important predictor, that helps to improve the outcome of pregnancy

Study of potential drug interactions between prescribed drugs in geriatric patients attending outpatient department in a government tertiary care hospital in Maharashtra

Background: A drug interaction is defined as a modification of the effect of a drug when it is administered with other drugs. Geriatric population is exposed to multiple drugs and consequently suffers many drug interactions (DIs). The objective of this study was to assess the potential drug interactions (PDI) in the geriatric population attending out-patient department (OPD) in a tertiary care hospital.Methods: A cross sectional observational study was carried out from July to September 2015. Patients of either gender, age 60 years or more, attending OPD in tertiary care hospital and prescribed two or more drugs, were included in the study. Prescriptions of medical officers were screened for PDIs with Medscape drug interaction software available on the website www.medscape.com.Results: In the present study, out of 600 prescriptions, 48.50% were identified having at least one drug interaction. Total 584 PDIs were found in 111 drug pairs. 29.62% PDIs were pharmacodynamic, 42.80% pharmacokinetic type and 10.78% PDIs were found affecting serum potassium level. Majority of PDIs (61.81%) were found significant followed by minor (36.98%) and severe (1.19%). Ranitidine and cyanocobalamin was the most common pair showing PDI (105) followed by aspirin and enalapril (44). Aspirin was found to be the most common single drug amongst pairs to cause PDI in the present study.Conclusions: In the present study, PDIs were studied in geriatric population. Knowledge of the prevalence and predictors of clinically important PDIs will help physicians and pharmacists identify patients at higher risk of adverse drug interactions requiring more cautious pharmacotherapy

EFFECT OF AEROBIC EXERCISES AND RESISTANCE TRAINING ON GLUCOSE LEVELS IN TYPE 2 DIABETIC SUBJECTS.

Objective: Diabetes mellitus is a leading cause of death and disability in the world and its prevalence is predicted to rise to 10% by 2030. Hence, this study is conducted with objectives to find out the effect of aerobic exercises and resisted exercises on blood glucose levels in type 2 diabetes mellitus (T2DM) subjects and to compare the effect of both exercises on blood glucose level.Method: The comparative study was conducted at Krishna Institute of Medical Sciences Deemed University, Physiotherapy department, Karad. 30 participants with age group between 30 and 65 years were taken. Subjects were selected as per inclusion and exclusion criteria. Group A (15) participants were given aerobic exercise on static bicycle, and Group B (15) participants were given resistance training using dumbbells and weight cuffs for 5 days/week for 4 weeks. Diet recommendations were given to every participant.Results: Statistical analysis was performed using paired and unpaired t-test. Analysis showed statistically extremely significant difference in fasting blood glucose level and postprandial blood glucose level in both the groups (p≤0.0001).Conclusion: Thus, this study concludes that both aerobic exercises and resistance training prove to be beneficial in controlling blood glucose levels in T2DM subjects

A prospective clinical study of management of pregnancy complicated with intauterine fetal death by low dose prostaglandins

Background: This study was conducted to evaluate the effectiveness and side effects of Prostaglandins (vaginal misoprostol) in the termination of second and third trimester pregnancies complicated with intrauterine fetal death.Methods: This study was carried out on 100 women with intrauterine fetal demise in second and third trimester pregnancies collected from Government Medical college and Hospital during the period October 2014 to October 2016.Results: By the application of 25µg of misoprostol in the posterior fornix of vagina every 4 hourly over 24 hours. The progress, adverse effects and outcomes were assesed. The success rate was 92.76% and 64.52% in women with third and second trimesters respectively. The mean induction delivery interval was 15.67±9.64 and 24.94±8.23 for women with third and second trimesters respectively. The induction delivery interval correlated negatively with the duration of gestation. The mean value of total required dose was 192.42±128.99 and 361.29±139.92 for women with third and second trimesters respectively.Conclusions: Low dose misoprostol appears to be safe, effective, practical and inexpensive method for termination of third trimester pregnancies compared to second trimester complicated with intauterine fetal death and its effects increases with duration of gestation

Study of antibiotic resistance profiling of Staphylococcus aureus isolated from clinical specimens of the patients attending a tertiary teaching hospital from Chhattisgarh

Background: Staphylococcus aureus is a pathogen causing wide spectrum of infections. It has tendency for the development of multidrug resistance thereby exposing the selection of appropriate treatment. Therefore, the present study was undertaken to find out the antibiotic susceptibility pattern of Staphylococcus aureus isolated from various clinical samples in teaching tertiary hospital.Methods: Total 85 Staphylococcus aureus was isolated from clinical samples (pus, urine, sputum and blood) tested. Identification of Staphylococcus aureus was done by standard conventional microbiological methods. Antibiotic susceptibility testing was done by using disk diffusion method as per CLSI guidelines.Results: Staphylococcus aureus was isolated maximum from pus samples followed by urine samples. Antibiotic susceptibility testing showed highest resistance against Penicillin (69%) and Erythromycin (51%) followed by Cotrimoxazole (50%) & Nitrofurantoin (50%). All the strains were sensitive to Vancomycin. Amongst the urine isolates all were sensitive to Norfloxacin. These percentages of sensitivities are characteristically higher in our study than the previous studies in the literature. In addition, out of 85 Staphylococcus aureus isolates, 26 isolates showed sensitivity   to all antibiotics.Conclusions: From the present study we conclude that though the Staphylococcus aureus is usually having multidrug resistance pattern. So regular antimicrobial susceptibility surveillance is essential for area‐wise monitoring of the resistance patterns. This will be beneficial to preserve the effectiveness of antibiotics and for better patient management

Solitary keratoacanthoma involving upper lip: a diagnostic dilemma - case report and a brief review

Keratoacanthoma (KA) is a benign epithelial proliferative lesion which frequently occurs on the sun exposed areas of the skin. KA originates within the pilosebaceous apparatus of the skin and may be solitary or multiple. Solitary KA can be difficult to differentiate from squamous cell carcinoma (SCC) both clinically and microscopically. However, the clinical course of the lesion and its ability to self involute makes it a distinct clinical entity. Solitary KA appears on the vermilion border of the lower lips with some frequency. A case of keratoacanthoma involving the upper lip is reported presenting as an exophytic growth that resolved after excisional biopsy. Photo- graphic documentation of the case along with relevant management protocol is discussed. The article emphasizes the significance of recognizing such lesion and discriminating it from SCC thus carrying diagnostic and therapeutic implications. However, in case of dilemma it is prudent to assume that the lesion is SCC unless proved otherwise clinically or histologically