Informatics Publishing Limited

S. Subramanian ¹, M. Vinoth Kumar ²

Affiliations
1 Department of Psychology, Bharathiar University, Coimbatore., IN
2 Department of Psychology, Bharathiar University Coimbatore., IN

Abstract

The extent to which the severity of life threatening ailments of patients and their demands of fulfilling health care requirements affect the psychological well being of nursing professionals has been a major concern of health care administrators. The working environment of health care providers in hospital settings treating severe illness such as HIV/AIDS, Cancer is more vulnerable and more likely to have exposure of viral infection leading to have physical and psychological distress. Exhibiting Burn-out Syndrome has been a more significant problem among the nursing professionals due to prolonged exposure of such occupational stress. Further, the type of coping strategies adopted by them may moderate the ill-effects of occupational stress. A sample of 150 nurses who are providing health care services to treat three types of ailments (HIV/AIDS, Cancer and General Patients) were approached to provide date on Burn-out Syndrome and Coping Strategies using a standardized questionnaires. The results of ANOVA revealed that Burnout Syndrome dimensions such as Emotional Exhaustion and Personal Accomplishment are more significantly higher among those nurses who are treating HIV/AIDS than nurses treating Cancer and General Patients. The key dimensions of coping strategies such as Putting into Perspective, Catastrophizing and Others Blame are significantly contribute to cope from burnout syndromes. The practical implication of results and intervention strategies are discussed.

Keywords

Burnout Syndromes, Coping Strategies, Nursing Professionals, HIV/AIDS, Cancer Patients

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M. Vinoth Kumar ¹, V. Balasubramanian ¹

Affiliations
1 Centre for Materials Joining & Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar- 608 002, Tamil Nadu, IN

Abstract

The SUS 304HCu austenitic stainless steel is used in superheater / reheater of ultra super critical boilers for their high temperature oxidation and corrosion resistance. Cu addition to steels can have adverse effects on the mechanical properties during fusion welding as it can form low temperature eutectic phases that preferentially segregate to the grain boundaries and embrittle the alloy. Friction welding is a solid state welding process where the bonding takes place well below the melting temperature of the alloy, combined with the autogenous nature of this welding process minimizes the adverse effects of low temperature eutectics segregation. Hence, in this investigation an attempt has been made to develop an empirical relationship to predict the tensile strength of the friction welded SUS 304HCu tubes of 57.1 mm outer diameter and 3.5 mm thick using statistical tools such as design of experiments, analysis of variance and regression analysis. Response surface methodology was used to optimize the process variables and maximum joint efficiency of 99% was achieved using the optimized friction welding variables.

Keywords

SUS 304HCu, Friction Welding, Design of Experiments, Tensile Properties.

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M. Vinoth Kumar ¹, V. Balasubramanian ¹, A. Gourav Rao ²

Affiliations
1 Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, Tamil Nadu - 608002, IN
2 Naval Material Research Laboratory (NMRL), Ambernath, Mumbai - 421506, IN

Abstract

AISI 304HCu austenitic stainless steel containing 2.3 to 3 (% wt) of Cu is mainly used in superheaters and reheater of ultra super critical (USC) boilers which operates over 600°C of steam temperature. Austenitic stainless steels welded by gas tungsten arc welding (GTAW) alters the phase composition, and microstructure of the steel in the fusion zone of welds and may affect the mechanical properties. In our previous investigation, it is found that autogenous welding of AISI 304HCu tubes resulted in segregation of alloying elements in the weld metal and resulted in joints with inferior tensile strength. Hence, in this study the high temperature tensile properties of filler added GTA welded AISI 304HCu tube joints were evaluated and correlated with the microstructural features. The tensile strength of the filler added GTA weld joints was higher than the parent metal at all test temperatures and the weld joint with filler addition was recommended for application in USC boilers.

Keywords

AISI 304HCu, Gas Tungsten Arc Welding, High Temperature Tensile Properties, Ultra Super Critical Boilers.

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M. Vinoth Kumar ¹, V. Balasubramanian ², A. Gourav Rao ³

Affiliations
1 Dept. of Manufacturing Engineering, Annamalai University, Annamalai Nagar, Tamil Nadu, IN
2 Center for Materials Joining and Research (CEMAJOR), Dept. of Manufacturing Engg., Annamalai University, Annamalai Nagar, Tamil Nadu, IN
3 Naval Material Research Laboratory (NMRL), Ambernath, Mumbai, IN

Abstract

The super 304HCu austenitic stainless steel tubes containing 2.3 to 3 (% wt) of Cu is mainly used in superheaters and reheater of ultra super critical boilers. The addition of Cu to super 304HCu has caused improvement in its corrosion and creep resistance. Austenitic stainless steels welded by constant current gas tungsten arc welding (GTAW) produce coarse columnar grains, increase alloy segregation and may result in low mechanical properties of the weld joint. Hence, autogenous pulsed current GTAW (PC-GTAW) was used to weld super 304HCu tubes of 57.1 mm outer diameter and 3.5 mm thick to control the solidification structure by altering the prevailing thermal gradients in the weld pool. The microstructure, hot tensile properties (550 °C, 600 °C and 650 °C), and fracture surface of the autogenous PC-GTAW welded joint was evaluated. Current pulsing in PC-GTAW joint cannot eliminate segregation in weld metal and exhibited lower tensile strength than the parent metal at all test temperature.

Keywords

Super 304HCu Stainless Steel, Autogenous Pulsed Current Gas Tungsten Arc Welding, Hot Tensile Properties, Microstructure.

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M. Vinoth Kumar ¹

Affiliations
1 Department of Psychology, St. Agnes Centre for Post-Graduation & Research, Mangalore, IN

Abstract

Spirituality is considered as a way of living which predetermines how individuals respond to life experiences, how it influences them to work together and behave more socially and responsibly. The present study hypothesized that there will be a significant relationship between adolescence psychological well-being, spirituality and prosocial behaviour and there will be a significant gender difference. For the purpose of the study a total of hundred and ten data was collected from adolescences belonging to the age range of 16 to 19. Riff's Psychological Well-being Scale, Spirituality Scale by C. Delaney, and Prosocial tendencies Measure by Carlo & Randall were administered. The correlation analysis showed a significant positive relationship between psychological well-being and Spirituality and non-significant relationship between psychological well-being and prosocial behaviour. The Implications for interventions and strategies aimed at promoting pro-social and well-being of adolescents are discussed.

Keywords

Adolescents, Spirituality, Pro-Social Behaviour, Psychological Well-Being.

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M. Kousalya ¹, P. Geetha ¹, A. Jesuraja ¹, M. Vinoth Kumar ¹

Affiliations
1 Department of Pharmacology, School of Pharmaceutical sciences, Vels University (VISTAS), Chennai, IN

Abstract

Objective: the present study was conducted to validate in-vitro anthelmintic activity of various extract hexane, ethyl acetate, ethanol, water of eclipta prostrata (l)., aganist pheritima posthuma by petri-dish method. Method: the in-vitro trial for anthelmintic activity of various extract of eclipta prostrata(l)., was conducted on mature live pheritima posthuma by petri-dish method. The extracts were used at the concentration of 5mg, 10mg, and 15mg and observation were made on their viability at room temperature. Results: among the various extract, only ethyl acetate and ethanol have anthelmintic activity. 5mg, 10mg, 15 mg/ml of ethyl acetate have produced paralytic effect at 34minutes minutes, 29 minutes and 20 minutes and mortality was confirmed at 111 minutes, 61 minutes and 46 minutes.5mg, 10mg, 15 mg/ml of ethanol have produced paralytic effect at 27 minutes, 23 minutes and 17 minutes and mortality was confirmed at 83 minutes, 72 minutes and 34 minutes respectively. Conclusion: an anthelmintic has been confirmed as the various extract shows good anthelmintic activity against pheritima posthuma. In the present investigation, the whole plant of eclipta prostrata (l)., was taken up for extensive studies " preliminary phytochemical and pharmacological studies of the whole plant of eclipta prostrata (l)., (asteraceae).

Keywords

Eclipta prostrata (L)., Anthelmintic, Pheritima Posthuma, Albendazole, Soxhlet Extraction.

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