Annular structures

This wail is located at the 0° azimuth and extends from El 620.0 to El 646.0 levels. 

The barrier is designed to protect redundant electrical systems that are required for safe shutdown from the effects of fire, pipe jets, and missiles. The barrier shall have a minimum thickness of 2 ft. (0.61 m). 

The barrier has been separated from the primary and secondary containment structures by expansion joints to allow free movement of each structure during earthquake. The barrier has been connected to the El 64.6.0 slab. 

This 3-ft thick concrete door is approximately 25 -5 ( 7.8 m) wide and 24 -6 (7.47 m) high. It is located at the equipment hatch in the primary containment at the 270° azimuth. The basic function of the door is to provide radiation and tornado borne missile shielding for the equipment hatch opening. 

This structure is located under the equipment access hatch at the 270° azimuth. It consists of a wall, two columns, two beams, and a thin slab. The wall provides door support during normal plant operation. The 300-kip (1334 KN) door is mounted on a rail and opens toward a decreasing azimuth providing access to the primary containment during maintenance operations. A long beam supported by one column provides door support in the open position. The 

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The model allows to perform thermal calculation of a multi-layer annular structure of a kiln body with a granular mixture-clinker, roasted inside it (Fig 1). 

Several wick structures are in common use. First is a fine-pore (0.14—0.25 mm (100-60 mesh) wire spacing) woven screen which is rolled into an annular structure consisting of one or more wraps inserted into the heat pipe bore. The mesh wick is a satisfactory compromise, in many cases, between cost and performance. Where high heat transfer in a given diameter is of paramount importance, a fine-pore screen is placed over longitudinal slots in the vessel wall. Such a composite structure provides low viscous drag for liquid flow in the channels and a small pore size in the screen for maximum pumping pressure. 

Structure (XII) with the attachment of the lactone bridge reversed can be ruled out for the following reason. Gibberellic acid decomposes slowly in aqueous solution to give gibberellenic acid first described by Gerzon, Bird, and Woolf (16) who suggested the homoannular diene structure (XV). We consider that the ultraviolet absorption (Amax 253 m/ e 22,400) is more in accord with the hetero-annular structure (XIV) and this is confirmed (25) by ultraviolet absorption (Amax 309 mfi e 16,500) of the derived dienone (XVII) which is decisive [cf. the ultraviolet absorption (Araax 310 m/ e 3900) of model cyclohexadienone (XVIII)]. 

Polymerization vessel Annular structure cuts down 4,776,703... 

Figure 9b shows that the fibers are quite uniform in diameter. Fibers as long as 20 cm and having diameters up to nearly 1 mm have been produced. Thickening of the fibers by chemical vapor deposition gives them an annular structure (Figure 10a), in contrast to the radial structure of a Thornel P fiber (Figure 10b). 

Azbel and Liapis (1983) analyzed gas/liquid systems with the assumption that the available energy at steady state is at a minimum. Reh (1971) mentioned the concept of the lowest resistance to fluid flow, and in a somewhat alternate way, the so-called minimum pressure drop was used by Nakamura and Capes (1973) in analyzing the annular structure in dilute transport risers. The instability of a uniform particle-fluid suspension was analyzed by introducing small disturbances into the system (Jackson, 1963 Grace and Tuot, 1979 Batchelar, 1988). 

T. Ikeda, K. Oosawa, H. Hotani, Self-Assembly of the Filament Capping Protein, FliD, of Bacterial Flagella into an Annular Structure , J. Mol. Biol., 259,679 (1996)... 

Bormashenko, E., Pogreb, R., Musin, A., Stanevsky, O., Bormashenko, Y., Whyman, G., et al. Patterning in rapidly evaporated polymer solutions formation of annular structures under evaporation of the poor solvent. J. Colloid Interface Sci. 300, 293-297 (2006)... 

Figure 8.24 Fracture behavior of VGCF compared with that of PAN and pitch based carbon fibers. Also shown is data for VGCF heat treated to 2200°C. The fiber s annular structure prevents brittle failure, yielding instead the sword-in-sheath non-catastrophic failure. Source Reprinted from Tibbetts GG, Beetz CP Jr., Mechanical properties of vapor grown carbon fibers, J Phys D App Phys, 20, 292, 1987.

Annular structuring lesions may be misinterpreted as either spasm (Figs. 8.14 and 8.15) or residual fecal material. The use of fecal tagging with an oral contrast agent (Thomeer et al. 2003 Zalis et al. 2003 Pickhardt et al. 2005) seems to help in avoiding interpretive errors caused by residual fecal material. 

The inclusion complexes of cyclodextrins have been studied since about 30 years using chemical, spectroscopic, kinetic, potentiometric methods. The obtained data have led to the conclusion that the adduct formation of the cyclodextrin molecules in solution is due to their annular structure and that they provide space for the substrate molecules in their annular cavity. The only obvious requirement for inclusion is that the dimensions of the guest molecules must be small enough to fit into the cyclodextrin cavity. 

Radial solids mixing Well Very well Core-annular structure poor, Pea = 100-1000 Poor... 

The hydrodynamic model development for a circulating fluidized bed follows the same approach as bubbling and turbulent beds. In the macroscale, the gas-solid flow is characterized by a coexistence of a bottom dense region and an upper dilute region. The flow in the radial direction can be described by a core-annular structure with a dense particle region close to... 

Various core-annular models have been developed to describe the gas-solid flow (Horio et al., 1988 Bai et al., 1995 Bolton and Davidson, 1998). The main difference among these models lie in the degree of complexity and in the assumptions associated with simplifications. Core-annular flow structures become dominant in the upper dilute region. Thus, when the dilute flow is predominantly present in the riser, models based on core-annular structures can be applied to reactor models. Kunii and Levenspiel (1990) extended the conventional fluidized bed model (a dense lower region coupled with a freeboard upper region) to cir-... 

As indicated in Table 11, models that use a core annulus structure in combination with axial variation in hydrodynamic properties differ widely in then-assumptions. Some (e.g., Marmo et al., 1996) impose a separate region at the bottom to account for turbulent or bubbling fluidization in the bottom zone. Others insert one or more additional zones, e.g., to account for smoother transitions from the distributor region to a core-annular structure, or to account for exit effects. Some of the models from the literature featuring multiple zones are shown schematically in Fig. 35. 

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