Anode Points.-The present note is a continuation of the preceding (these PROCZEDINGS, 14, 1928, p. 50) in which the anode behavior was left outstanding. The method is the same (see Fig. 1), s in atm./106, denoting the wind pressure of positive ions when the needle of the electrode protrudes y cm. The spark gap x = 2 cm. is just within the power of the machine under the favorable circumstances (...

The statistics of magnetosphere–ionosphere (MI) coupling derived from a two-month long run of the Lyon–Fedder–Mobarry (LFM) global simulation model are investigated. MI coupling characteristics such as polar cap potential and field-aligned current (FAC), downward Poynting flux and vorticity of ionospheric convection are compared with observed statistical averages and with results from the Weime...

Electrochemical amperometric transducers measure electric current to detect the concentration of reagents. This study examined the mass-transfer processes in an electrochemical sensor operating in flow conditions using a numerical model. The transient physical phenomena were investigated in a realistic three-dimensional ~3D! sensor model with a fixed potential of 2350 mV on the electrode surfac...

The flow field configuration plays an important role on the performance of proton exchange membrane fuel cells (PEMFCs). For instance, channel/rib width and total channel cross-sectional area determine the under-rib convection and pressure drop respectively, both of which directly influence the water removal, in turn affecting the oxygen supply and cathodic oxygen reduction reaction. In this st...

[1] To evaluate the plasma sheet transition from weak to strong convection, we investigate ion moments and magnetic field observed by Geotail. The Geotail data from 1995 to 1997 within the area 9 RE XGSM 30 RE and jYGSMj 5 RE were sorted for periods of quiet times and the substorm growth phase, which gives a better indication of convection strength than do global indexes. We find that the overa...

[1] We present a comprehensive study of plasma properties at geosynchronous orbit for electron and ion energies between 1 eV and 45 keV, between 1990 and 2001. The variations of temperature and density are analyzed as functions of local time, magnetospheric convection strength, and the strength of the ring current. Various parameters derived from temperature and density are calculated to elucid...

In this paper, longshore sediment transport in littoral zones is investigated. For investigation of sediment transport in the nearshore zone, the effects of waves, currents and topographical conditions of coast are considered. Linear wave theory was used for the investigation of the wave behaviour. Governing equations of littoral current are continuity and momentum ones. For calculating concent...