Results 161 to 170 of about 50,745 (217)
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Solar Energy, 1978
Abstract The principles of solar water pumping are briefly described. The mechanical energy needed for pumping water may be produced by thermodynamic, or direct-conversion methods. In thermodynamic conversion a fluid with high internal energy is produced in solar collectors or concentrators. The internal energy of the fluid may be utilized in Rankine-
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Abstract The principles of solar water pumping are briefly described. The mechanical energy needed for pumping water may be produced by thermodynamic, or direct-conversion methods. In thermodynamic conversion a fluid with high internal energy is produced in solar collectors or concentrators. The internal energy of the fluid may be utilized in Rankine-
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Conransporters as molecular water pumps
2002Molecular water pumps are membrane proteins of the cotransport type in which a flux of water is coupled to substrate fluxes by a mechanism within the protein. Free energy can be exchanged between the fluxes. Accordingly, the flux of water may be relatively independent of the external water chemical potential and can even proceed uphill. In short, water
Zeuthen, Thomas, MacAulay, Nanna
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Cuticular Water Pump in Insects
Nature, 1967AMONG the ways in which terrestrial arthropods can control their environmental water relations, the active retention of water1, the regulation of water loss2, and the active uptake of atmospheric water3 have been found to be concerned with the movement of water through the cuticle.
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2008
There is good evidence that cotransporters of the symport type behave as molecular water pumps, in which a water flux is coupled to the substrate fluxes. The free energy stored in the substrate gradients is utilized, by a mechanism within the protein, for the transport of water.
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There is good evidence that cotransporters of the symport type behave as molecular water pumps, in which a water flux is coupled to the substrate fluxes. The free energy stored in the substrate gradients is utilized, by a mechanism within the protein, for the transport of water.
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Solar Energy, 1959
Abstract The left-way cyclic process, introduced in the preceding paper, is described for obtaining water out of air. Two working methods are utilized. The first one delivers drinking water out of air without any service, maintenance, etc. The second method requires opening a cover above the absorbent during the evening.
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Abstract The left-way cyclic process, introduced in the preceding paper, is described for obtaining water out of air. Two working methods are utilized. The first one delivers drinking water out of air without any service, maintenance, etc. The second method requires opening a cover above the absorbent during the evening.
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International Scientific Journal of Engineering and Management
The Water ATM system is a practical solution to provide water to individuals in a controlled and automated manner. Using an Arduino-based platform, this system incorporates an RFID reader (EM18) for user identification and an LCD display (20x4) to show essential details such as remaining balance, the status of the transaction, and time remaining.
Gawali Santosh M., Malwade Padmaja
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The Water ATM system is a practical solution to provide water to individuals in a controlled and automated manner. Using an Arduino-based platform, this system incorporates an RFID reader (EM18) for user identification and an LCD display (20x4) to show essential details such as remaining balance, the status of the transaction, and time remaining.
Gawali Santosh M., Malwade Padmaja
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A current-driven nanometer water pump
Nanotechnology, 2016The design of a water pump, which has huge potential for applications in nanotechnology and daily life, is the dream of many scientists. In this paper, we successfully design a nanometer water pump by using molecular dynamics simulations. Ions of either sodium or chlorine in a narrow channel will generate electric current under electric fields, which ...
Jiaye, Su, Keda, Yang
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A charge-driven molecular water pump
Nature Nanotechnology, 2007Understanding and controlling the transport of water across nanochannels is of great importance for designing novel molecular devices, machines and sensors and has wide applications, including the desalination of seawater. Nanopumps driven by electric or magnetic fields can transport ions and magnetic quanta, but water is charge-neutral and has no ...
Xiaojing, Gong +6 more
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Seal Lubrication of an Automotive Water Pump
Tribology, 2006A noisy mechanical seal is a grave problem, especially in water pumps designed for the automotive industry. The noisiness is often caused by dynamic instability (stick-slip behavior), which occurs when the seal lubrication changes from hydrodynamic to mixed.
ANTONINI, Massimo +3 more
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The Software Design of an Intelligent Water Pump
2017In an effort to increase handpump reliability, the Messiah College Collaboratory and the Department of Computer and Information Science are developing the Intelligent Water Project (IWP) system. IWP measures and reports the functionality of handpumps and volume of water extracted on two-hour intervals daily.
Daniel Scott Weaver, Brian Nejmeh
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