Results 291 to 300 of about 11,083,935 (337)
Some of the next articles are maybe not open access.
Scientific American, 2015
The article looks at a model car developed at Columbia University which is powered by evaporation. The vehicle incorporates plastic tapes covered in bacterial spores, which absorb moisture and expand and then contract, creating torque in its rotary engine. Scientists have used the same technology to power light-emitting-diode (LED) lights.
openaire +3 more sources
The article looks at a model car developed at Columbia University which is powered by evaporation. The vehicle incorporates plastic tapes covered in bacterial spores, which absorb moisture and expand and then contract, creating torque in its rotary engine. Scientists have used the same technology to power light-emitting-diode (LED) lights.
openaire +3 more sources
Earth under Fire, 2019
The warming temperatures and changing precipitation regimes associated with global climate change have effects on the quantity and quality of water in rivers, lakes, and aquifers.
P. Gleick
semanticscholar +1 more source
The warming temperatures and changing precipitation regimes associated with global climate change have effects on the quantity and quality of water in rivers, lakes, and aquifers.
P. Gleick
semanticscholar +1 more source
English Today, 2008
ABSTRACTIt is such a simple word for so versatile and important a liquid. We drink it, cook with it, wash in it, sail across it, swim in it, sprinkle it on our flowers and, when the need arises, we put fires out with it. In some parts of the world there is too much of it and in other parts it is so scarce that it is more precious than gold. It is older
+8 more sources
ABSTRACTIt is such a simple word for so versatile and important a liquid. We drink it, cook with it, wash in it, sail across it, swim in it, sprinkle it on our flowers and, when the need arises, we put fires out with it. In some parts of the world there is too much of it and in other parts it is so scarce that it is more precious than gold. It is older
+8 more sources
, 2002
In 1995, the International Association for the Properties of Water and Steam (IAPWS) adopted a new formulation called “The IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use”, which we ...
W. Wagner, A. Pruss
semanticscholar +1 more source
In 1995, the International Association for the Properties of Water and Steam (IAPWS) adopted a new formulation called “The IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use”, which we ...
W. Wagner, A. Pruss
semanticscholar +1 more source
Correction of flux measurements for density effects due to heat and water vapour transfer
, 1980When the atmospheric turbulent flux of a minor constituent such as CO2 (or of water vapour as a special case) is measured by either the eddy covariance or the mean gradient technique, account may need to be taken of variations of the constituent's ...
E. K. Webb, G. Pearman, R. Leuning
semanticscholar +1 more source
Equations for the soil-water characteristic curve
, 1994The soil-water characteristic curve can be used to estimate various parameters used to describe unsaturated soil behaviour. A general equation for the soil-water characteristic curve is proposed.
D. Fredlund, A. Xing
semanticscholar +1 more source
Journal of Hydraulic Engineering, 2010 With great humility I have accepted the position of editor of the Journal of Hydraulic Engineering JHE beginning this month. It is not an opportunity that I ever expected to receive, nor a decision that I have taken lightly. I appreciate the encouragement offered by past JHE editors Dennis Lyn, Pierre Julien, and Rob Ettema, as well as that of Steve ...
openaire +1 more source
A graphic procedure in the geochemical interpretation of water-analyses
, 1944This paper outlines certain fundamental principles in a graphic procedure which appears to be an effective tool in segregating analytical data for critical study with respect to sources of the dissolved constituents in waters, modifications in the ...
A. M. Piper
semanticscholar +1 more source
Water, Water, Not Everywhere? [PDF]
Science, 2007 ![Figure][1] CREDIT: ZUBER ET AL. The story of water on Mars has a checkered past. Historically thought to be criss-crossed by alien canals, the arrival of the first spacecraft showed that the red planet is bone dry. A flotilla of satellites has since traveled to Mars.
openaire +1 more source
Global water resources and the role of groundwater in a resilient water future
Nature Reviews Earth & Environment, 2023B. Scanlon +23 more
semanticscholar +1 more source