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Study Of Magnetic And Transport Anomalies In Rare Earth Based Intermetallics And Oxides

Mon, 01 Jan 2024 00:00:00 GMT

Title: Study Of Magnetic And Transport Anomalies In Rare Earth Based Intermetallics And Oxides Authors: Iyer Karthik Krishnan Abstract: Abstract There has been a considerable interest in understanding the physical properties of the compounds containing rare-earths, not only from the angle of basic science but also considering growing application potential. Current trends in condensed matter area suggest that investigation of new materials in particular are important in this respect, as such studies often paved the way for new concepts and resultant applications. Keeping this in mind, some ternary compounds – less investigated in the literature – have been taken up for magnetic investigations, and also for exploring antibacterial studies. Such compounds for our studies are: Nd2RhSi3, Er2RhSi3, Ho4PtAl, Er4PtAl, and Dy4RhAl among metals and spin-chain insulators Tb2BaNiO5 and Tb2BaCoO5, in both bulk and nanoforms. There are structural features facilitating ‘geometrically frustrated magnetism’ – a current trend in magnetism - in the above-mentioned metallic compounds. While many novel features (revealing structure-property relation) in the magnetic behavior of these compounds are reported in this thesis, main highlights are: (i) Establishment of an exceptional magnetism of Nd2RhSi3. (ii) Establishment of antiferromagnetism at 5 K in Er2RhSi3, however, with concurrent cluster spin-glass features, attributable to partially disordered antiferromagnetism; 1/3 magnetization plateau – less known among metals – and corresponding magnetoresistance plateau are intriguing findings. (iii) Ho4PtAl and Er4PtAl exhibit a re-entrant cluster spin-glass behavior, with the onset of an antiferromagnetic ordering; isothermal entropy change is very large at the onset of magnetic order, making these compounds useful for magnetic refrigeration applications. Dy4RhAl exhibits spin-glass features which coexists with xxvii antiferromagnetic order (18 K); this magnetic behavior is interestingly different from that of Dy4PtAl, which is ferromagnetic. (iv) Pressure studies on the magnetic ordering temperatures of well-known ‘exotic’ multiferroic systems. Tb2BaNiO5 and Tb2BaCoO5 bring out how magnetism of localized 4f electrons behave in a complex fashion to the application of external and chemical pressures, influencing other coupled phenomena. (v) A reduction in particle to nanoform in Dy4RhAl, leads to the evolution of a Griffiths-phase like behavior (a novel concept in magnetism), suppressing antiferromagnetic order – a rare demonstration in magnetic metals. In other cases, the changes in magnetic properties in nanoform are subtle. This reinforces the fact that one needs to be cautious while employing nanoparticles for medicinal applications based on the properties of the bulk forms, though none of these compounds are efficacious in inhibition of bacterial and fungal growths. The studies serve as a classic study for exploration of such rare-earth intermetallic materials for medicinal applications.

Evaluation of prenatal education Program on pregnancy health Practices in mothers at a tertiary Care hospital of Belagavi

Mon, 01 Jan 2024 00:00:00 GMT

Title: Evaluation of prenatal education Program on pregnancy health Practices in mothers at a tertiary Care hospital of Belagavi Authors: Arenlila Jamir Abstract: ABSTRACT Background: During pregnancy, the well-being of both mother and baby is paramount, requiring lifestyle adjustments. The World Health Organization stresses the importance of engaging pregnant women in healthy behaviors, including a balanced diet, regular exercise, proper supplement intake, and avoiding harmful substances. These health practices significantly impact maternal, fetal, and pregnancy outcomes. Educating women about healthy pregnancy practices, labor, and parenting readiness boosts their confidence in managing pregnancy challenges. Family support, especially from fathers, is crucial in promoting these healthy practices. Fathers' active involvement creates a positive environment, reduces negative maternal health behaviors, and mitigates various risks.

Determinants and consequences of Malnourished underfive urban Children: a cross sectional study

Mon, 01 Jan 2024 00:00:00 GMT

Title: Determinants and consequences of Malnourished underfive urban Children: a cross sectional study Authors: Mrs.Vaishali S.Bagewadi Abstract: ABSTRACT Malnutrition is now the most prevalent nutritional condition in poor nations, and it is a major contributor to under-five mortality and morbidity globally. More than one third of the world's malnourished youngsters are found in India alone. Among them, more than half of young children under the age of 3 are seemed to be underweight.1 The objective of this study was to assess the determinants of malnutrition among underfive children. Study design: A cross sectional study with key informant interview to identify the determinant factors of malnutrition.460 children with their mothers participated in the study. Anthropometric measurements were taken and causative factors were assessed with pre tested and validated questionnaires. Odds ratio with 95% confidence interval was used to identify the determinants of Malnutrition among underfive children using multivariate logistic regression. Results: Muslim children (OR=0.40 (95% CI, p=0.0010), Extended family (OR= 5.42 (95% CI, p=0.0001) Breastfeeding started very late (OR= 4.99 (95% CI, p=0.0001), Bottle feeding (OR=0.28 (95% CI, p=0.0030), Daily feeding frequency < 5 times (OR=3.38 (95% CI, p=0.0001),Exclusive breastfeeding not given for 6 months(OR= 2.69 odds (95% CI, p=0.0001) and Bottle washed only with water (OR= 0.74 odds (95% CI, p=0.0500) were more likely to suffer from malnutrition.

Determinants of growth and Development in under five rural Children: a cross sectional study

Mon, 01 Jan 2024 00:00:00 GMT

Title: Determinants of growth and Development in under five rural Children: a cross sectional study Authors: Mr.Virupakshappa Savadi Abstract: ABSTRACT "DETERMINANTS OF GROWTH AND DEVELOPMENT IN UNDER FIVE RURAL CHILDREN: A CROSS SECTIONAL STUDY" Background: A child's later achievement levels are influenced by their optimal development during the early years of life. Objectives: To evaluate the growth and development in children less than five years in rural Belagavi and to estimate the determinants of growth and development among children less than 5 years in rural Belagavi.