Deposition characterization

Recovery methods are based either on mining combined with some further processing or operation on the oil sands m situ (Fig. 6). The mining methods are appHcable to shallow deposits, characterized by an overburden ratio (ie, overburden depth-to-thickness of tar sand deposit) of ca 1.0. Because Athabasca tar sands have a maximum thickness of ca 90 m and average ca 45 m, there are indications that no more than 10% of the in-place deposit is mineable within 1990s concepts of the economics and technology of open-pit mining. 

It is noteworthy that bornite, chalcocite and tetrahedrite-tennantite which are common minerals in Kuroko deposits occur in gold bearing Besshi-type deposits. Although these minerals are considered to be secondary minerals, depositional environments of these minerals are characterized by higher /s, and foj conditions. It is also noteworthy that these deposits are rich in pyrite rather than pyrrhotite. Probably, Besshi-subtype deposits in Shikoku formed under the higher fo and /sj conditions than the deposits characterized by pyrrhotite (Maizuru, Hidaka, Kii, east Sanbagawa). Such typical Besshi-type deposits (Besshi-subtype deposits in Shikoku) are characterized by simple sulfide mineral assemblage (chalcopyrite, pyrite, small amounts of sphalerite). Inclusion of bornite in pyrite is also common in these deposits. 

JEGEL, Manitoba Slags, Deposits, Characterization, Modifications, Potential Utilization, report, John Emery Geotechnical Engineering Limited, Toronto, Ontario, 1986. 

Filamentous a-synuclein deposits characterize this atypical parkinsonian... 

Chapters 10 and 11). Current distribution during deposition and both in situ and ex situ deposit characterization are the focus of Chapters 12-14. Electronic design (mathematical modeling) is the subject of Chapter 15, followed by the issues of structure, properties of deposits, multilayers, and interdiffusion (Chapters 16-18). 

Pegmatites represent a residual phase of igneous depositions, characterized by extremely coarse crystalline material, that results Ironi the presence of associated volatiles, e.g.. water vapor, carbon dioxide, sulfur dioxide, and others, which decrease tile viscosity and facilitate crystallization. Quartz, feldspar, and mica are the more common minerals found in this environment. but Mich bodies are also hosts for many rare minerals and several types of gem stones, e.g.. beryl, tourmaline, and topaz. 

Calculations of the deposition rate show a dramatic dependence on the mechanism by which the surface charge is generated, in addition to the dependence on the charge itself. This reflects the importance of surface chemistry in particle deposition. Characterization of the electrostatic interactions, involving a given surface, require electrokinetic measurements on that surface under a broad spectrum of electrolyte conditions so that the number density and dissociation constant of ionizable surface groups can be deduced a single electrokinetic measurement is not sufficient. 

These two gaseous species are both acidic and the wet and dry deposition characterics are assumed to be similar, yet B(OH)3 does not undergo conversion to another species, therefore the SO2 conversion can be monitored by using gas-phase B as a tracer. In a similar fashion, particulate Se is assumed to mimic sulfate and can be used as a tracer of S02 to-sulfate conversion. The solutions to the equations for the four species are as follows ... 

Rath, PC., Besra, L., Singh, B.P, and Bhattacharjee, S. (2012) Tita-nia/hydroxyapatite bi-layer coating on Ti metal by electrophoretic deposition characterization and corrosion studies. Ceram. Int., 38, 3209—3216. 

The surface acceleration time history obtained from the ground response analysis for two typical sites C class site and B class site are presented in Figures llaand 1 lb respectively. It can be noticed from Figure 11 that the surface peak ground acceleration for C class and B class site is 0.53 g and 0.3 Ig respectively. It is evident that the C class site amplifies the ground motion in comparison to the input ground motion with PGA of 0.3 g. However the B class site does not amplify the input motion due to the presence of a thick hard sandy clay deposits characterized by very high shear wave velocity. 

It is well known [57] that dendrites are not formed at overpotentials of electrodeposition lower than a critical overpotential for dendritic growth initiation, t/j, and that powdered deposits characterized by a very large surface area are formed at overpotentials higher than some critical value, rjc-... 

Jiang, T., Zhang, Z., Zhou, Y., liu, Y., Wang, Z., Tong, H., Shen, X., Wang, Y., 2010. Surface fimctionalization of titanium with chitosan/gelatin via electrophoretic deposition characterization and cell behavior. Biomacromolecules 11, 1254—1260. http //dx.doi.org/ 10.1021/bml00050d. 

Anyway, increasing overpotential leads to the formation of a more disperse deposit characterized by the decreased particle size. This can be explained by the fact that increasing overpotential leads to the decrease of the height of protrusion, / o,i, at which dendrites start to... 

It is interesting to stress the marked difference between veins of this type of deposit, characterized by the abundance of... 

Spontaneous comeal deposits, characterized by the presence of multiple basophilic granules at the basis of the comeal epithelium, are well described in different rat strains (1, 19) but in the literature a variation in terminology is found i.e. comeal degeneration (1), comeal opacities (12), comeal dystrophy (19) or band keratopathy (33). This pathology is not unique to the rat but has been described in various other laboratory animals such as mouse (34), rabbit (11,13) and dog (associated to hyperadrenocorticism, 31), as well as in man in which comparison is often done with band keratopathy (1). 

In Situ Deposit Characterization with an Optical Method Using a Laser Sheet at Grazing Incidence... 

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