The running-in wear of a multi-asperity silicon carbide sphere-on-silicon flat interface is investigated at the micro- and nanoscale in relation to friction behaviour an unlubricated macroscale tribological system sliding unidirectional mode. Experiments contact simulations indicated that during was governed by roughness asperities on sphere their influence interfacial pressure. Specific plough...

Advances in computer-basedmodeling and simulationmethodologies and capabilities, coupled with the emergenceanddevelopment of high-resolution experimental techniques, allow investigations of tribological phenomenawith unprecedented atomic-scale spatial and temporal resolution. We focus here onmolecular dynamics simulations of formationandproperties of interfacial junctionsandonnano-elastohydrody...

Four large earthquakes occurred in 1980 in a seismic gap near the Loyalty Islands in the New Hebrides. At 3:25 UT on October 24 an event with M, = 6.7 initiated the sequence. Three events, M, = 6.7, 7.2, and 6.5, followed on the next day. We investigated this sequence by using the seismicity, first-motion, and wavefonn data and long-period surface waves. The first-motion data constrain one of e...

Recent direct implementation of asperity theories is reinterpreted here to formulate an improved version of the Greenwood and Williamson GW) theory with the inclusion of interaction between asperities. This is achieved by treating the contact pressures as uniformly distributed over he apparent contact area and the resulting deformation as uniform. The correction is equivalent to an increase of ...

A distinct difference of the earthquake activity in megathrust subduction zones is pointed out, concerning seismic segmentations in the vicinity of Japan—that is, the apparent distribution of earthquake hypocenters characterized by Along-dip Double Segmentation (ADDS) and Along-strike Single Segmentation (ASSS). ADDS is double aligned seismic-segmentation of trench-ward seismic segments along t...

The elastic contact between two computer generated isotropic rough surfaces is studied. First the surface topography parameters including the asperity density, mean summit radius, and standard deviation of asperity heights of the equivalent rough surface are determined using an 8-nearest neighbor summit identification scheme. Second, many cross sections of the equivalent rough surface are trace...

Naringin is a flavanone found in citrus fruits and vegetables which are responsible for the asperity, due to fruit unable consume from we get valuable nutrition our body. To overcome this asperity fruits, present investigation carried out, provides detailed report of isolation screening naringinase producing micro-organisms different samples collected Kalyan -Karnataka region, India. A sum arou...

The accurate characterization of microearthquake sequences allows seismologists to better understand the physical processes involved in earthquake nucleation and rupture propagation gain insights on fault geometry at depth. Standard procedures for seismic analysis are based manual detection phase-picking, requiring a huge amount work from expert seismologists, particularly case microseismic eve...