120 research outputs found

    Effects of Polyox in Fountain Solution

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    Polyox is a polymer of ethylene oxide. It is soluble in water and commercially available. The effects of Polyox in fountain solutions were studied and evaluated. The same concentration (one-half percent of Polyox in water) at different pH and blending times, was tested for physical properties and printability. The physical property tests made were of viscosity, surface tension and contact angle. The printability tests were conducted as roll-up, ability to clean up the plate, resistance to scumming, printing sharpness and resolution properties. The experiments were conducted under controlled press conditions and the properties of each test solution were reported. Roll-up, the ability to clean up the plate, and resistance-to-scumming test were repeated five times and the average taken. Printing sharpness and resolution tests at high and low ink film thickness were run two times and 25 samples of each test were taken for obtaining the average. The results show that the effect of Polyox in fountain solution is as good as standard fountain solution

    The Influence of Teacher Gender on College Student Motivation and Engagement in an Online Environment

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    The purpose of this study was to examine the influence of teacher gender on student motivation and engagement. The study addressed the question: Is there a statistical difference among the motivation and engagement scores of males taught by male teachers (MM), males taught by female teachers (MF), females taught by male teachers (FM), and females taught by female teachers (FF) enrolled in online science courses? Exploring this topic allowed educators to identify strategies for quality teaching and learning, increase graduation rates, and decrease student delinquency. This quantitative study used a causal-comparative research design and the Motivation and Engagement Scale (MES) to survey 629 undergraduate students enrolled in an online science course at a for-profit university. Data was collected from male teachers, female teachers, and undergraduate students enrolled in an online science course at a leading for-profit university. The instrument used in this study was the Motivation and Engagement Scale. Due to extreme outliers, the violations of normality and variance a Kruskal-Wallis statistical test was used to determine the difference among mean scores of the four groups. Because of these violations caution should be taken when interpreting the results. The study used Kruskal-Wallis statistical tests to determine the difference among mean scores of the four groups. The study determined that male and female students exhibit higher levels of motivation and engagement when taught by male teachers. Future quantitative research needs to be conducted that includes a different population from other colleges and universities to eliminate the broad patterns found among participants

    Does patellar tilt affect the outcome of total knee arthroplasty? a retrospective study

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    Background: Patellofemoral joint management during total knee replacement remains a controversial topic among knee surgeons. The purpose of this study is to evaluate the influence of resurfaced patellar component tilt on the functional outcome of total knee arthroplasty.Methods: This is a retrospective study reviewing all the patients who underwent total knee arthroplasty in our institution, operated by a single surgeon using a single implant design.Results: A total of 48 patients and 82 knees were enrolled into this study. Patients were evaluated by Oxford knee score, knee society score, Melbourne patellar score, anteroposterior, lateral, and Merchant’s view radiographs. The patellar tilt was divided into three grades according the measurement obtained from knee radiographs.Conclusions: A higher degree of patella tilt (more than 10 degree) is associated with poor outcome following total knee arthroplasty. Melbourne patella score is more sensitive than knee society score and Oxford score in assessing the effect of patella tilt on the outcome of total knee arthroplasty

    The variability of sagittal spino-pelvic mobility in Indian population

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    Background: Abnormal spino-pelvic mobility is increasingly recognized as a leading cause for hip instability following arthroplasty.Methods: We studied the lateral spino-pelvic radiographs of 90 patients, with no spine/hip pathology in standing and sitting positions. We measured the change in sacral slope and grouped them into three spino-pelvic patterns.Results: We found that 50% of study subjects had normal spino-pelvic mobility. The remaining 50% were either hypermobile (24%) or stiff (26%). The stiff spines were either fixed (11%) or hypomobile (15%).Conclusions: Our study shows that in a normal population without any prior hip/spine pathology a significant percentage (50%) have abnormal spino-pelvic mobility. The significance of spinal stiffness in younger age group need to be looked further to make any changes in acetabular cup placement during hip replacement

    EVALUAION OF ANTI-INFLAMMATORY AND ANTI PYRETIC ACTIVITY OF ETHANOLIC LEAVES EXTRACT OF Myxopyrum smilacifolium (Wall.) Blume

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    ABSTRACTObjective: The aim of this study was to evaluate the anti-inflammatory and antipyretic activity of ethanolic extract of Myxopyrum smilacifolium(EEMS) leaves in experimental animals.Methods: Plant material was collected from Meenadom, Kottayam district, Kerala, India, in the month of March 2014. The leaves were washed anddried under shade at room temperature. After 1-month, the leaves were powdered. The powder was weighed (50 g) and was extracted by successivesolvent extraction process using ethanol. The total yield of the ethanolic extract was 4.6%. Phytochemical screening was carried out for the detectionof the phytoconstituents by simple qualitative methods. The acute toxicity studies carried out as per OECD guidelines 423. The dosing was designedas per the acute toxicity study. The anti-inflammatory activity was performed by carrageenan and formalin induced paw edema model at two differentdoses, 200 mg/kg and 400 mg/kg. The antipyretic activity was performed by Brewer's yeast induced hyperpyrexia model at two different doses.Wistar rats weighing (150-200 g) of either sex were used for these studies.Results: The results of anti-inflammatory study revealed that the ethanolic leaves extract of M. smilacifolium inhibited the inflammation in carrageenanand formaline induced paw edema method. The ethanolic leaves extract of M. smilacifolium possesses a significant antipyretic effect in yeast inducedelevation of body temperature in experimental rats.Conclusion: EEMS leaves shows a dose dependent increase in the anti-inflammatory, antipyretic and immunomodulatory activities.Keywords: Ethanolic extract of Myxopyrum smilacifolium, Carrageenan, Formalin, Brewe's yeast

    Case report on splenic abscess with pleural effusion caused by enteric fever

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    Splenic abscess is an infrequent complication of enteric fever caused by Salmonella typhi. The incidence rate ranges from 0.14-2%. Clinical manifestations are often nonspecific and may be presented as fever with left upper quadrant abdominal pain and a palpable tender mass. Diagnosis is often difficult and splenic abscess management is based on surgical interventions and antibiotic therapy. In this case report we would like to highlight splenic abscess with left reactive pleural effusion as a rare complication of Salmonella typhi infection

    Appraisal of the Marine Fisheries of Maharashtra

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    Maharashtra with a coast line of 720 km ranks second among the maritime states of India in respect of marine fish landings. There are 153 landing centres situated in the five coastal districts namely, Thane, Greater Bombay, Raigad, Ratnagiri and Sindhudurg. The state, which has a continental shelf of 89,096 square kilometers, offers rich potential for marine fisheries. The areas of potential fishing grounds in 0-50 m depth and 50-200 m depth are 2.55 and 10.48 million hectares respectively. Fishing takes places almost throughout the year except during the monsoon period. Several types of boats, mechanised and nonmechanised, using different gears land their catches. The exploited marine fish landings in the state are estimated by a well-planned multi-stage startified sampling design followed by the Central Marine Fisheries Research Institute. Bombay duck, non-penaeid prawns, penaeid prawns, croakers, pomfrets, elasmobranchs, perches and ribbonfishes are some of the commercially important groups which form the bulk of landings. From the early sixties the marine fish landings in the state have been steadily progressing mainly owing to the increase in the mechanised fishing. This increase continued up to midseventies and thereafter the landings have more or less stabilised

    Refractive Status at Birth: Its Relation to Newborn Physical Parameters at Birth and Gestational Age

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    Refractive status at birth is related to gestational age. Preterm babies have myopia which decreases as gestational age increases and term babies are known to be hypermetropic. This study looked at the correlation of refractive status with birth weight in term and preterm babies, and with physical indicators of intra-uterine growth such as the head circumference and length of the baby at birth.All babies delivered at St. Stephens Hospital and admitted in the nursery were eligible for the study. Refraction was performed within the first week of life. 0.8% tropicamide with 0.5% phenylephrine was used to achieve cycloplegia and paralysis of accommodation. 599 newborn babies participated in the study. Data pertaining to the right eye is utilized for all the analyses except that for anisometropia where the two eyes were compared. Growth parameters were measured soon after birth. Simple linear regression analysis was performed to see the association of refractive status, (mean spherical equivalent (MSE), astigmatism and anisometropia) with each of the study variables, namely gestation, length, weight and head circumference. Subsequently, multiple linear regression was carried out to identify the independent predictors for each of the outcome parameters.Simple linear regression showed a significant relation between all 4 study variables and refractive error but in multiple regression only gestational age and weight were related to refractive error. The partial correlation of weight with MSE adjusted for gestation was 0.28 and that of gestation with MSE adjusted for weight was 0.10. Birth weight had a higher correlation to MSE than gestational age.This is the first study to look at refractive error against all these growth parameters, in preterm and term babies at birth. It would appear from this study that birth weight rather than gestation should be used as criteria for screening for refractive error, especially in developing countries where the incidence of intrauterine malnutrition is higher

    Epidemiology, baseline characteristics and risk of progression in the first South-Asian prospective longitudinal observational IgA nephropathy cohort

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    Introduction: Glomerular Research And Clinical Experiments-IgA Nephropathy in Indians (GRACE-IgANI) is the first prospective South Asian IgAN cohort with protocolized follow-up and extensive biosample collection. Here we report the baseline clinical, biochemical, and histopathologic characteristics of GRACE IgANI and calculate baseline risk of progression for the cohort. Methods: 201 incident adults with kidney biopsy-proven primary IgAN were recruited into GRACE-IgANI between March 2015 and September 2017. As of April 30, 2020, the cohort had completed a median followup of 30 months (interquartile range [IQR] 16-39). Results: The commonest clinical presentation in GRACE IgANI was hypertension, with or without proteinuria, and nephrotic-range proteinuria was present in 34%, despite Conclusions: The predicted risk of progression in this cohort was considerable. Over the next 5 years, we will dissect the pathogenic pathways that underlie this severe South Asian IgAN phenotype

    Mapping development and health effects of cooking with solid fuels in low-income and middle-income countries, 2000-18 : a geospatial modelling study

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    Background More than 3 billion people do not have access to clean energy and primarily use solid fuels to cook. Use of solid fuels generates household air pollution, which was associated with more than 2 million deaths in 2019. Although local patterns in cooking vary systematically, subnational trends in use of solid fuels have yet to be comprehensively analysed. We estimated the prevalence of solid-fuel use with high spatial resolution to explore subnational inequalities, assess local progress, and assess the effects on health in low-income and middle-income countries (LMICs) without universal access to clean fuels.Methods We did a geospatial modelling study to map the prevalence of solid-fuel use for cooking at a 5 km x 5 km resolution in 98 LMICs based on 2.1 million household observations of the primary cooking fuel used from 663 population-based household surveys over the years 2000 to 2018. We use observed temporal patterns to forecast household air pollution in 2030 and to assess the probability of attaining the Sustainable Development Goal (SDG) target indicator for clean cooking. We aligned our estimates of household air pollution to geospatial estimates of ambient air pollution to establish the risk transition occurring in LMICs. Finally, we quantified the effect of residual primary solid-fuel use for cooking on child health by doing a counterfactual risk assessment to estimate the proportion of deaths from lower respiratory tract infections in children younger than 5 years that could be associated with household air pollution.Findings Although primary reliance on solid-fuel use for cooking has declined globally, it remains widespread. 593 million people live in districts where the prevalence of solid-fuel use for cooking exceeds 95%. 66% of people in LMICs live in districts that are not on track to meet the SDG target for universal access to clean energy by 2030. Household air pollution continues to be a major contributor to particulate exposure in LMICs, and rising ambient air pollution is undermining potential gains from reductions in the prevalence of solid-fuel use for cooking in many countries. We estimated that, in 2018, 205000 (95% uncertainty interval 147000-257000) children younger than 5 years died from lower respiratory tract infections that could be attributed to household air pollution.Interpretation Efforts to accelerate the adoption of clean cooking fuels need to be substantially increased and recalibrated to account for subnational inequalities, because there are substantial opportunities to improve air quality and avert child mortality associated with household air pollution. Copyright (C) 2022 The Author(s). Published by Elsevier Ltd.Peer reviewe
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