Although electrokinetic effects are not new, only recently have they been investigated for possible use in energy conversion devices. We recently reported the electrokinetic generation of molecular hydrogen from rapidly flowing liquid water microjets [Duffin et al. J. Phys. Chem. C 2007, 111, 12031]. Here, we describe the use of liquid water microjets for direct conversion of electrokinetic ene...

National Bureau of Standards Gaithersburg, MD 20899 Electrica1 powers from 5 to 1 SO J.t-W were dissip.a.ted in a thermistor. causing it to rise to equilibrium tem:peratllres above the Magnant surrouoding water. Natura:. c·:n ..... ectioD was. t:h.en s,jtnu1!rted by f.o::ced I:onvection of water flowing up or down at known rates from 1.3 to 17 mm/mio. The disturbances of the equilibrium tempera...

The Hanford Reach of the Columbia River is a free flowing stretch that exists within the Hanford Nuclear Reservation in south central Washington, USA. Operations at the reservation have resulted in contamination of ground water with chromium and other chemical and radiological constituents. Ground water discharges into the Columbia River occur in areas where chinook salmon (Oncorhynchus tshawys...

Abstract. Two types of DC electrical discharges in atmospheric air (streamer corona and transient spark) were tested for decontamination and decoloration of water contaminated by bacteria and organic dyes. The flowing water passed through the high voltage (HV) needle electrode into the active discharge region. The bacteria were killed most efficiently by transient spark and streamer corona with...

The effects of gas composition on the productivity of biomass and intra-cellular fatty acids were investigated in semi-batch cultures of a green alga Chlorococcum littorale (C. littorale) with gas flowing at 100 ml/min under the conditions of temperature of 22 C and light intensity of 4200 lx. Growth rates were enhanced and total fatty acids contents increased by flowing an O2-free gas mixture ...

This article deals the entropy generation due to mixed convective flow of two non-miscible and electrically conducting fluids streaming through an inclined channel by considering convective boundary conditions at the walls of channel. Micropolar fluid is flowing adjacent to the upper wall of the channel and fluid flowing between the non-Newtonain fluid layer and lower plate of channel is water ...

A new design of equilibrator for carbon dioxide monitoring in natural waters is described. It consists in a vertical tube filled with marbles through which water is flowing while equilibrating with a closed air circuit. It offers several advantages compared with classical equilibrators, among which is a fast response time (half-life constant approximately 30 s) and the potential to work in very...

A bundle of fibers (each 20 Am in diameter) was sandwiched by electrodes, and a high voltage of 400 V was supplied to the electrodes to measure the leakage current flowing on the surface of the fiber. The leakage current is as low as the order of mA. It was demonstrated that the current is almost linear relative to the water amount on the surface of the fibers in the examined range from 0.08 to...

A novel and quite simple method to establish a traceability link between air velocity and the national standards of mass and time is presented in this paper. The method is based on the humidification of flowing air before the blower of a wind tunnel with a known mass flow of water. Then air velocity can be calculated as a function of humidification water flow. The method is compared against a P...

The OSIRIS cameras (optical, spectroscopic, and infrared remote imaging system) onboard the European Space Agency's Rosetta spacecraft observed comet 9P/Tempel 1 for 17 days continuously around the time of NASA's Deep Impact mission. The cyanide-to-water production ratio was slightly enhanced in the impact cloud, compared with that of normal comet activity. Dust particles were flowing outward i...