Effect Of Rice Husk Powder On Properties Of Natural Rubber Latex Foam

Rice husk powder (RHP), an agricultural by-product incorporated into natural rubber latex (NRL) compound and foamed to produce natural rubber latex foam (NRLF) via the Dunlop method in this work. The tensile, mechanical, thermal resistance, micro structural characterization and degradation studies of RHP filled NRLF were investigated and compared with the controlled NRLF (zero RHP loading). In the first series, the effect of RHP loading from 0 to 10 phr on the properties of NRLFs was studied. In the second series, the influence of RHP size reduction was studied. The effect of partial or complete replacement of RHP with sago starch was investigated in the third series. The RHP/Sago Starch ratio was fixed to 10 phr. In the fourth series, modified RHP was used. The effects of soil burial test and exposure to natural weathering on all these samples were explored for three months in accordance to ASTM D 5247 and ISO 877.2, respectively. Result showed tensile strength, modulus at break, hardness and thermal stability increases with increasing filler loading while elongation at break and recovery percentage decreased. In second series, reduction of RHP filler size showed an improvement in the properties examined due to the enhanced RHP-matrix interaction in the NRLFS. In third series, the substitution of sago starch showed poor mechanical properties and greater thermal stability of the NRLFs. Modification of RHP reduces the lignin and silca content, thus resulting in reduced properties of NRLFs. However, these modification accelerated the degradation of RHP filled NRLFS. Deterioration in the properties of NRLFs was observed through soil burial and natural weathering test

Workload, achievement motivation, and mental fatigue: a mediation study among white-collar workers

Workplace fatigue has long been a plague in most countries as the expectation of employee performances is overstretching. Fatigue is attributed by job demand as workload depletes energy. However, job resources such as organizational, physical, or social characteristic as well as work motivation tend to buffer fatigue. The aim of this paper is to analyse the mediation effects of achievement motivation in the relationship between workload and mental fatigue among white-collared workers, by using Mc Clelland’s theory of motivation and Job DemandResources model. A cross-sectional survey design was employed. Total of 117 males and 201 females responded to a self-report questionnaire consisting of the Workload subscale from Job Demands-Resources Scale, the Achievement Motivation subscale from Manifest Needs Questionnaire, and the Mental Fatigue Scale. Mediation model was employed. Results revealed that workload significantly predicts mental fatigue, and that achievement motivation is a significant partial mediator in the relationship between mental fatigue and achievement motivation. Findings imply that organizations would benefit from investing in higher levels of achievement motivation aiding in reducing levels of mental fatigue. Avoid compelling employees in handling extremely high workload, as achievement motivation only buffers the impact of mental fatigue

Live Evaluation of Online Lecture 30March - SDA.pdf

This data set is collatedby IMU Centre of Education from the student feedback on the Introduction to Health Profession module</p

GAMIFICATION THROUGH COLLABORATIVE LEARNING IN MEDICAL EDUCATION

Results of the survey of the student feedback for IHP module from the eLearn portal  and from IMU centre of education</p

Raw and Analysed data from the student feedback survey.docx

Raw and automated analysed data from the self-administered questionairre in the eLearn portal for the feedback on the IHP module and feedback fro IHP module from IMU Centre of Education</p

Understanding mental fatigue and its detection: a comparative analysis of assessments and tools

Mental fatigue has shown to be one of the root causes of decreased productivity and overall cognitive performance, by decreasing an individual’s ability to inhibit responses, process information and concentrate. The effects of mental fatigue have led to occupational errors and motorway accidents. Early detection of mental fatigue can prevent the escalation of symptoms that may lead to chronic fatigue syndrome and other disorders. To date, in clinical settings, the assessment of mental fatigue and stress is done through self-reported questionnaires. The validity of these questionnaires is questionable, as they are highly subjective measurement tools and are not immune to response biases. This review examines the wider presence of mental fatigue in the general population and critically compares its various detection techniques (i.e., self-reporting questionnaires, heart rate variability, salivary cortisol levels, electroencephalogram, and saccadic eye movements). The ability of these detection tools to assess inhibition responses (which are sensitive enough to be manifested in a fatigue state) is specifically evaluated for a reliable marker in identifying mentally fatigued individuals. In laboratory settings, antisaccade tasks have been long used to assess inhibitory control and this technique can potentially serve as the most promising assessment tool to objectively detect mental fatigue. However, more studies need to be conducted in the future to validate and correlate this assessment with other existing measures of mental fatigue detection. This review is intended for, but not limited to, mental health professionals, digital health scientists, vision researchers, and behavioral scientists

Morphology and Properties of Geopolymer Coatings on Glass Fibre-Reinforced Epoxy (GRE) pipe

Geopolymer coatings were coated on glass fibre-reinforced epoxy (GRE) pipe by using kaolin, white clay and silica sand as source materials and sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) as alkaline solution. The microstructure and mechanical property of geopolymer coating on GRE pipe were methodically investigated through morphology analysis, and flexural strength test. The result indicates the microstructure and interfacial layer between geopolymer coating and GRE pipe significantly influence the mechanical property of geopolymer coating. However, different source materials gave different microstructure and property in geopolymer coating

Morphology and Properties of Geopolymer Coatings on Glass Fibre-Reinforced Epoxy (GRE) pipe

Geopolymer coatings were coated on glass fibre-reinforced epoxy (GRE) pipe by using kaolin, white clay and silica sand as source materials and sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) as alkaline solution. The microstructure and mechanical property of geopolymer coating on GRE pipe were methodically investigated through morphology analysis, and flexural strength test. The result indicates the microstructure and interfacial layer between geopolymer coating and GRE pipe significantly influence the mechanical property of geopolymer coating. However, different source materials gave different microstructure and property in geopolymer coating