Calcium-aluminum-rich inclusions (CAIs) are the oldest solar system solids known in primitive meteorites (chondrites). They predate the other components by 1–2 Myr, and likely condensed within a short time interval, close to the Sun in the gaseous protoplanetary disk. Their preservation must counterbalance both the sunward drift caused by gas drag and the general inward motion of the entraining...

in the present study, the microstructure and mechanical properties of the dissimilar welding betweenastm a335 low alloy steel and er309l austenitic stainless steel were investigated using the gastungsten arc welding process. the welding of dissimilar materials between astm a335 low alloy steeland er309l austenitic stainless steel was found to have a significant effect on the microstructure when...

the present research article highlights the metal (cd, cu, pb, zn and fe)distribution pattern in the rspm generated in different hot spot sites located at kochi, thequeen of arabian sea. these sampling sites are categorized under three different zonesas estuarine, riverine, and coastal. two sampling phases are selected in order to check theconsistency in pollution trend after a two year gap and...

PEI 10 nm INTRODUCTION Induced on activated endothelial cells and platelets, P-selectin is a cell adhesion molecule that plays a critical role in the inflammatory and thrombotic processes. P-selectin glycoprotein ligand 1 (PSGL-1) is expressed on leukocytes, and its interaction with P-selectin mediates the flowing cells tethering to and rolling on the blood vessel wall [1]. In this dynamic envi...

Previous models of dust growth in protoplanetary disks considered either uniformly laminar or turbulent disks. This Letter explores how dust growth occurs in a layered protoplanetary disk in which the magnetorotational instability generates turbulence only in the surface layers of a disk. Two cases are considered: a completely laminar dead zone and a dead zone in which turbulence is “stirred up...

An image file contains huge amounts of information that requires high storage space, large transmission bandwidths and long transmission times. So it is useful to compress the image by storing only the required information to reconstruct the original image. An image can be considered as a matrix of pixel or intensity values. In order to compress an image redundancies must be evaluated, for exam...

The extent to which ongoing seismicity in intraplate regions represents long-lived aftershock activity is unclear. We examined historical and instrumental seismicity in the New Madrid central U.S. region to determine whether present-day seismicity is composed predominantly of aftershocks of the 1811-1812 earthquake sequence. High aftershock productivity is required both to match the observation...

We give a derivation, in the form of a stepwise (refinement-oriented) presentation, of a family of algorithms for single keyword pattern matching, all based on the so-called dead-zone algorithm-style, in which input text parts are tracked as either unprocessed (‘live’), or processed (‘dead’). Such algorithms allow for Boyer-Moore-style shifting in the input in two directions (left and right) in...

Migration of protoplanets in their gaseous host disks may be largely responsible for the observed orbital distribution of extrasolar planets. Recent simulations have shown that the magnetorotational turbulence thought to drive accretion in protoplanetary disks can affect migration by turning it into an orbital random walk. However, these simulations neglected the disk’s ionization structure. Lo...