Face ends

Check bore and face-end plates for nicked edges, deep scratches, or scoring. Stone or scrape if necessary, and polish with very fine aluminum oxide polishing paper. 

Eiul-ecke, /., -eck, n. terminal angle, summit, endemisch, a. endemic, enden, v.t. r. end, terminate, cease. End-ergebnis, n. final result final product, -ertrag, m. final yield, -erzeugnis, n. final product, end product, -flache, /. terminal face, end face. geschwindigkeit, /. terminal... 

This integral includes an integration over the area Ao. To is a curve surrounding the crack tip (Fig. 2), beginning on one crack face, ending on the other face. Ao is the area enclosed by T,... 

The structures in Fig. 1.2 have atoms or molecules only at each comer of the unit cell. It is possible to find unit cells with atoms or molecules also at the centre of the top or bottom faces (end-centred), at the centre of every face (face-centred) or with a single atom in the centre of the cell (body-centred), as in Fig. 1.3. 

In both cases, these transformations are regioselective, and each has been used to make natural products with an excellent enantiomeric excess (Figure 9.4). Since both enantiomers of 1.5 (R = Ph) are available, either (K)- or (S)-dichloro-cyclobutanone can be prepared. The favored conformation of the end ether is probably s-trans, and the aromatic substituent hinders one face of the double bond so the reaction with dichloroketene occurs on the other face. End ethers of other chiral alcohols give less useful results [1528],... 

ANALYSIS OF TOP-COAL CAVING CHARACTER AT WORKING FACE ENDS... 

Li C J Li S W 2008. Roof control technology for large unsupported roof at face end of coal mining face. Coal Science and Technology. 36 (8) 26-30. 

Qin L Y Zhang L Y 2000. Study on the roof structure and stability of fully-mechanized coal face End, Coal Science Technology Magazine 6 (3) 14-16. 

This paper intends to 22110 face (end face) conditions on the basis of theoretical calculation method and effect analysis of actual mining, mining machines, hydraulic, scrapers and other analytical studies are widely promoting the use of research results. 

Assemblies are built using the constraints among geometrical data, e.g. a bolt fits concentrically into a hole as far as the bolt end fits the hole s bottom. This relationship is saved within the CAD system as a relationship between geometrical attributes of the CAD parts the axis of the bolt goes through the center of the hole s bottom that at the same time touches the face end of the bolt. 

Find the heavily insulated black "primary" wires of the transformer (see pages 3 and 8). Make sure the insulation is stripped off the ends of the wires. Hold one power cord and one transformer primary wire, end-facing-end, and with the bare metal wires overlapping and next to each other. With your fingers, twist the bare wires around each other, but do not include any insulated parts. Put some cardboard or heavy paper on the table top, to protect it from damage. Arrange the twisted pair of wires so it is suspended an inch or so above the cardboard or paper, and it can later be touched from underneath by the hot soldering iron. 

End Skew. A brick (particularly a refractory brick) with one end completely bevelled at an angle of 60°. This bevel can be towards a large face end skew on flat) or towards a side face (end skew on edge). Both types of brick are used in the springing of an arch (See Fig 1, p39)... 

For each of these shapes, there may be choices as to where the lattice points may be placed in the unit cell while preserving the symmetry. If the lattice points are located only at the vertices of the unit cell, we have a prunitiye lattice. For some lattice systems, there may also be lattice points located in the centers of two opposite faces (end-centered lattice), in the center of each face (face-centered lattice), or in the middle of the unit cell (body-centered lattice). There are 14 distinct possibilities, and these are known as the Bravais lattices. The conventional unit cells for these lattices are shown in Fig. 13.5. 

Back-seat - Any means by which the material (charge) in a reactor process tube is moved toward the upstream (or front-face) end of the tube. 

The tetragonal system can also have species in the center of the unit cell. Orthorhombic crystals can have species in the center (body-centered), in all faces (face-centered), only in opposing faces (end-centered), or only at the corners (primitive). Monoclinic unit cells can be either primitive or end-centered, with species in one set of opposing faces. Triclinic, hexagonal, and trigonal unit cells are just primitive. 

Figure 9 illustrates the radial brick joint compression-only behavior. In this example the stress-strain behavior of the refractory material was assumed to remain totally elastic. As shown, a portion of the joint on the hot face end of the radial brick joint is in compression, and a portion on the cold face end of the brick is separated. The circumferential loading is a maximum at the lining hot face and decreases linearly to zero at an internal location of the brick joint. For actual elastic/plastic refractory behavior, the circumferential loading would be nonlinear. The internal location is where the joint begins to separate. This joint behavior can be explained fundamentally by considering the temperature of the various locations in the brick joint compared to the steel shell temperature and the coefficient of thermal expansion of the brick material and the steel shell. 

Typically, the material used in the radial joints would not be a blanket material but rather a plastic material that would completely deteriorate at a low temperature of 150 to 200°C (300 to 400°F). Based on the portion of the lining radial joints that experience compressive loading (see Figure 9), the expansion allowance is not needed in the fuU length of the radial joint. The radial joint expansion allowance would start at the hot face end of the radial joint and extend inward to the location where the compressive load ends. 

---