This paper presents a review of hydrogen production systems using geothermal energy, showing the importance and potential this technology in addition to main obstacles facing domain. The effect several parameters was taken into consideration, such as fluid temperature, water electrolysis working fluid, type power cycle. different types plants were also compared, namely, flash, binary, flash-bin...

Background/aim It is well known that physical strain is associated with increased cortisol production. And although mental stress elevates cortisol concentrations as well, little is known of the independent and/or combined effects of both on the secretion of cortisol. Aim of the study was to investigate the day-to-day cortisol dynamics associated with training, performance and recuperation and ...

on the source of plasma density and electric field perturbations in pmse and pmwe regionspolar mesospheric summer/winter echoes (pmse/pmwe) are very strong radar echoes produced by ionospheric electron density fluctuations at half the radar wavelength. the main focus of this paper is the altitude range 80 to 90 km in summer and altitude range 65-86 km in winter in the polar mesosphere . this pa...

This article situates Henrik Vigh’s concept of ‘chronic crisis’ in social disaster research and humanitarian studies order to explore how child survivors experience address the prolonged consequences disasters. The rationale for mobilising chronic crisis is that it opens up possibilities exploring dynamics multidimensionality disasters responses them. Using example nuclear disasters, looks at e...

An one-pot method has been developed for the synthesis of azo dyes via sequential diazotization–diazo coupling of aromatic amines with coupling agents at room temperature in the presence of Bi(NO3)3. 5H2O. Short reaction times, high yields, a clean process, simple methodology, easy work-up and green ‎conditions are advantages of this protocol.‎

The objective of this study was to determine the effects of grasp conditions (types of grasp, grasp width, glove and types of coupling) on maximal pushing force (MPF) and required pinch force (RPF) during snap fit assembly. The results indicated that the type of grasp, the type of coupling and wearing gloves have significant (p

This paper presents and examines a new design concept for bistable reciprocating piston pump. The pump mechanism belongs to the mechanisms, which have two stable positions at end of suction discharge strokes. transition between is achieved by using triggering force each beginning subsequent movement recuperative spring. In this mechanism, forces are created Shape Memory Alloy (SMA) wires. Geome...