The bacterial S-layer forms a regular structure, composed of a monolayer of one (glyco)protein, on the surfaces of many prokaryotic species. S-layers are reported to fulfil different functions, such as attachment structures for extracellular enzymes and major virulence determinants for pathogenic species. Lactobacillus acidophilus ATCC 4356, which originates from the human pharynx, possesses su...

Cell walls of Clostridium thermohydrosulfuricum and C. thermosaccharolyticum have a two-layered structure, consisting of a thin, lysozyme-sensitive murein layer and a surface (S) layer composed of hexagonally or tetragonally arranged subunits. The subunits can be removed from the murein layer by treatment of cell wall preparations, are composed of a fragile, pH-sensitive monolayer of macromolec...

The reduction of six wide-angle reflection profiles shot within the two fault blocks visited by Ocean Drilling Program (ODP) Leg 116 in combination with the ODP sonic logs has produced a velocity-depth structure for this area. The sediment velocity increases from 1.6-1.7 km/s in the near surface to 3.4-3.5 km/s immediately above basement with a velocity gradient of 0.75/s. A depth converted sei...

in this research a layer of ni-cu-p was deposited on 304 stainless steels by using gelatin and thiourea asadditives in a sulfate solution. in order to determine the properties of deposited layers, a microhardness testerwas used for microhardness measurement, x.r.d. for microstructural analysis, and a scanning electronmicroscope equipped with e.d.x. for determining morphology and analyzing the d...