97,236 research outputs found
Mechanical solar motor: A concept
Motor is proposed to convert radiation from sun directly into mechanical energy. Motor utilizes thermal expansion of liquid, heated by sun, as driving force. Unlike most thermally powered systems, it does not require that liquid be converted into vapor
Predicting the cognitive correlates of sun protective behaviour : a thesis presented in partial fulfilment of the requirements for the degree of Master of Arts in Psychology at Massey University
Previous research has explored the cognitive correlates of sun protective behaviour and has found that intention to use skin protection is likely to affect an individuals decision to use such behaviour. Other research has used social cognition models such as the Theory of Planned Behaviour to predict the use of sun protective behaviours with mixed results. The present study examined sun protective behaviour on beaches in New Zealand (n=80) and used a modified version of the Jones, Abraham, Harris, Schulz & Chrispin (1998) model of sun protective behaviour to predict sunscreen use. This modified version of the model contained variables from social cognition models, including the Theory of Planned Behaviour and Stage models of Health Behaviour such as that of Gollwitzer (1993). Knowledge, norms, threat likelihood, perceived threat, self-efficacy and motivation to prevent negative effects of sun exposure together accounted for 36.5% of the variance in intention to use sunscreen. The findings also suggest that motivation to prevent negative effects of sun exposure and threat likelihood consistently have the strongest correlational relationship (of all the prior cognitions) with both intention and sunscreen behaviour. A measure of planning did not mediate the effects of intentions on sunscreen use as was originally expected, rather, intentions had the largest effect on sunscreen use. It is reasonable to assume that planning may not always be necessary for the prediction of sunscreen behaviours. It was concluded that a modified version of the sun protective behaviour model may be useful in predicting such behaviours but refinement is required of the model and its measures. Implications for further research and model modification are noted
A Lithium Experiment in the Program of Solar Neutrino Research
The experiments sensitive to pp-neutrinos from the Sun are very perspective
for the precise measurement of a mixing angle . A e
scattering experiment (Xmass) and/or a charged-current experiment (the indium
detector) can measure the flux of electron pp-neutrinos. One can find the total
flux of pp-neutrinos from a luminosity constraint after the contribution of
Be and CNO neutrinos to the total luminosity of the Sun are measured. The
radiochemical experiment utilizing a lithium target has the high sensitivity to
the CNO neutrinos, thus, it has a good promise for the precise measurement of a
mixing angle and for the test of a current theory of the evolution of the
stars.Comment: 6 pages, 2 figures, 1 table, A report made by A.Kopylov at
International Conference NANP-2005, June 2005, Dubna, Russi
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