Sea wave energy is being increasingly regarded as one of the most promising sources renewable energy. This paper deals with modeling and simulation an onshore converter system designed by UMBRA GROUP SpA. Several topics are addressed. Starting from multibody strategy, this delves more deeply into mechanical efficiency evaluation ball-screw in elastohydrodynamic lubrication regime, core conversi...

The tube-web spider genus Ariadna Audouin, 1826 has been revised for South Australia and Victoria, revealing a remarkable diversity, particularly centred in the arid north of Australia. We describe 23 species as new, ten which are supported by molecular data, where these were available. recognise two groups some based on combination genitalic morphology, macrosetae patterns somatic characters: ...

Abstract The extreme ultraviolet (EUV) imager, EUVI-B, on board the International Space Station (ISS) under Station–ionosphere-mesosphere-atmosphere plasmasphere cameras (ISS-IMAP) mission was originally intended to observe EUV emissions at 83.4 nm scattered by $${\mathrm O}^+$$ O <mml:m...

We study the latitudinal distribution and temporal evolution of sunspot penumbra-umbra ratio (q) for even odd Solar Cycles 12-24 RGO groups, SC21-SC24 Debrecen groups Kodaikanal dataset SC16-SC24. find that (odd) have q-values 5.20 (4.75), cycles 5.27 (5.43), has q-value 5.74 on average. also show q is at lowest around Equator Sun increases towards higher latitudes having maximum values about 1...