Phase field theory is developed for solids undergoing potentially large deformation and fracture. The elastic potential depends on a finite measure of elastic strain. Surface energy associated with fracture can be anisotropic, enabling description of preferred cleavage planes in single crystals, or isotropic, applicable to amorphous solids such as glass. Incremental solution of the Euler–Lagran...

Abstract During the Lower Paleolithic, interaction between hominins and elephants through medium of lithic tools is testified by numerous sites in Africa, Europe, Asia. This ensured a large source food knappable raw material, bone. The availability huge package resources represented these animals had deep impact on behavior their strategies exploitation landscape. article, for first time, docum...

Elliptic Curve Cryptography (ECC) provides a secure means of exchanging keys among communicating hosts using the diffie hellman key exchange algorithm. Encryption and decryption of texts and messages have also been attempted. In the paper on Knapsack over ECC algorithm, the authors presented the implementation of ECC by first transforming the message into an affine point on the EC, and then app...

The Joint Global Ocean Flux Study relies on a variety of techniques and measurement strategies to characterize the biogeochemical state of the ocean, and to gain a better mechanistic understanding required for predictive capability. Early in the program, a list of Core Measurements was defined as the minimum set of properties and variables JGOFS needed to achieve these goals. Even at the time o...

The pH-rate profile for inactivation of the RTEM-1 cysteine beta-lactamase by iodoacetate supports previous evidence [Knap & Pratt (1989) Proteins Struct. Funct. Genet. 6, 316-323] for the activation of the active-site thiol group by adjacent functional groups. The enhanced reactivity of iodoacetate, with respect to that of iodoacetamide, suggests the influence of a positive charge in the activ...

The ‘unforgettable presence’ of the sea is notable by its absence in many accounts of the Neolithic of coastal and island areas within the British Isles. The story as most frequently told is one of terrestrial action; of monumental construction, polished stone technology, pottery and domesticates. When the sea does emerge it is often of a homogenous nature, a resource to be exploited with littl...

graphy in diagnosis of aortic dissection. Lancet 1989;1:457–461. 10. Harris RD, Usselman JA, Vint VC, Warmath MA. Computerized tomographic diagnosis of aneurysms of the thoracic aorta. J Comput Assist Tomogr 1979;3:81–91. 11. Bartel T, Eggebrecht H, Muller S, Gutersohn A, Bonatti J, Pachinger O, Erbel R. Comparison of diagnostic and therapeutic value of transesophageal echocardiography, intrava...

The Hollow Rock Shelter site in Western Cape Province, South Africa, was excavated in 1993 and 2008. This study presents new results from a technological analysis of Still Bay points and bifacial flakes from the site. The results show that Still Bay points from the site are standardized tools. The points in the assemblage consist of a complex mixture of whole and fragmented points in all phases...