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The effect of annealing temperature (1000-1150 °C) on the microstructure evolution, mechanical properties, and pitting corrosion behavior of a newly developed novel lean duplex stainless steel with 20.53Cr-3.45Mn-2.08Ni-0.17N-0.31Mo was studied by means of optical metallographic microscopy (OMM), scanning electron microscopy (SEM), magnetic force microscopy (MFM), scanning Kelvin probe force mi...

Cryo-EM of large, macromolecular assemblies has seen a significant increase in the numbers of high-resolution structures since the arrival of direct electron detectors. However, sub-nanometre resolution cryo-EM structures are rare compared with crystal structure depositions, particularly for relatively small particles (<400 kDa). Here we demonstrate the benefits of Volta phase plates for single...

The level of selenium-resistant bacteria in water, algal mats, and sediment from Kesterson reservoir, Calif., a site with known selenium pollution, was compared with that in nearby Volta reservoir, a site with low selenium levels. A high percentage (greater than 50%) of all isolates from the Kesterson samples were resistant to 10 mM selenite. In contrast, only a small percentage of the Volta is...

3 I have pointed out (Proc. Nat. Acad. Sci., 13, 43-46 (1927)) that the dual theory of electric conduction permits us to suppose the free to have the heat energy of gas molecules while the mean heat energy of all the conducting electrons may be much less. 4 In the first draft of his theory Sommerfeld, using, I believe, purely kinetic considerations, deduced Volta potential-differences which app...

Jacques Ellul argued that modernity’s nearly exclusive reliance on science and technology to design society would threaten hunan freedom. Of particular concern for Ellul was the prospect of the technical milieu overwhelming culture. The commodification of the Volta River in order to modernize Ghana illustrates the Ellulian dilemma of the autonomy of technique. Displacing a commons way of life, ...