We employ experiment and theory to explore the nonlinear elasticity and yielding of concentrated suspensions of nanoparticles which interact via purely repulsive forces. These glassy suspensions are found to exhibit high exponent power law or simple exponential dependences of the shear elastic modulus and perturbative yield stress on nanoparticle volume fraction, as well as a monotonic decrease...

the plant from which it was obtained, till Kasmpfer, in the year 1712, defcribed and delineated it in his Amoemtates Exotic#* The plant which is the fubjedt tif the prefent paper, was raifed, it feems, in the botanic garden at Edinburgh, from a root fent to Dr? Hope from St? Peterfburgh, where it had been cultivated by FrofefTor Pallas, from feed procured from Perfia. Every part of the plant wh...

The present paper describes the biosynthesis of the thiamin thiazole in Bacillus subtilis and Saccharomyces cerevisiae. The two pathways are quite different: in B. subtilis, the thiazole is formed by an oxidative condensation of glycine, deoxy-D-xylulose 5-phosphate and a protein thiocarboxylate, whereas, in S. cerevisiae, the thiazole is assembled from glycine, NAD and Cys205 of the thiazole s...

Double network (DN) gels, consisting of a brittle first and flexible second network, have been known to be extremely tough and functional hydrogels. In a DN gel subjected to force, the brittle first network breaks prior to the fracture of the flexible network. This process, referred to as internal fracture, dissipates energy and increases the energy required to completely fracture DN gels. Such...

brassica juncea l. is an important oilseed crop which occupies premier position in indian agriculture. developing high yielding genotypes has been a major breeding objective in indian mustard. present study was conducted at directorate of rapeseed-mustard research, india, during 2010-2013 to determine general combining ability (gca) and specific combining ability (sca) of parental lines and bet...

in this paper the optimal design of a dissipator made of aluminium and steel and principallysubjected to shear forces and the preliminary results of the characterization tests are described.the device has been designed on the basis of an optimization procedure with the objective tomaximize the energy dissipated in the device. the response of a 3d frame equipped with thedevice and subjected to 7...