The influence of various factors, such as current density, bath and annealing temperatures, on microhardness of electrodeposited nickel from a nickel sulfamateformamide bath was investigated. Bright, adherent, finegrained and almost defect-free nickel deposits with moderately high hardness were obtained at 50 "C and a current density of 0.6 Aldm2. The microhardness of the nickel deposits decrea...

Introduction and General Characteristics: The fan-shaped deposits of the Tharsis Montes generally share three major facies: 1) Ridged facies, 2) Knobby facies, and 3) Smooth facies. The ridged facies consists of narrow, parallel, concentric ridges interspersed in places with small hills [1]. The hummocky or knobby facies consists of dense concentrations of small sub-km scale circular to irregul...

pb-zn deposits in the kurdistan region, northern iraq, have occurred mainly as a stratabound and open-space filling ore bodies. they are hosted by dolostone and dolomitic-limestone of platform carbonates. the ore deposits at the studied dure and lefan areas are respectively hosted by kurra chine (upper triassic) and bekhme (upper cretaceous) formations. pyrite, sphalerite and galena are the maj...

The rate of return earned on a deposit can depend on its term, the amount of money invested in it, or both. Most banks, for example, offer a higher interest rate for longer term deposits. This implies that if one individual has capital available for investment now, but needs it in the next period, whereas the opposite holds for another individual, then they can both benefit from cooperation sin...

New experimentals work were conducted to study the effects of sediment deposits’ thickness on the incipient motion of particles in a rigid rectangular channel. The results show that the deposits’ thickness significantly affects the channel’s ability to erode the sediment deposits. New equations were derived taking into account the effects of deposits’ thickness.

When cloned hybrid cells (A/Bm-5) were grown to confluence and fixed in glutaraldehyde-calcium, electron-opaque deposits were observed on the cytoplasmic faces of plasma membrane. Deposits were most abundant at gap junctions. Deposits were often precisely paired, cell-to-cell, across the gap junctional membranes, and these paired deposits were frequently equivalent in size. This relationship wa...

The fine structure of plastids and their starch deposits in differentiating sieve elements was studied in bean (Phaseolus vulgaris L.). Ultrastructural cytochemistry employing two carbohydrases specific for different linkages was then used to compare the chemical nature of "sieve tube starch" (the starch deposited in sieve elements) with that of the ordinary starch of other cell types. Hypocoty...

In the oil industry, the issue of controlling paraffin deposits remains relevant today. The most common way in the Perm Krai to remove paraffin is to lower the scrapers into the well.  This method is the main in the fight against paraffin deposits, but does not provide absolute protection. The least costly way to control paraffin is to use flushing with hot oil or water, but it does not always ...