Half-Sections

On a cleaned petrographic slide, place a few milligrams of raw feed, clinker, cement, or other particulate materials. Three or more different materials may be placed on the same slide, each separated by match sticks, toothpicks, etc. 

Add a few drops of epoxy and stir gently with a needle to produce a uniform particle distribution. Place the slide on a level slide warmer set at no higher than 40°C and allow to cure. 

Using Texmet (Buehler) or equivalent cloth, and 15-pm diamond paste or oil slurry, or other suitable grinding pad, and a horizontal rotary grinder / polisher, reduce the section to the final desired thickness (quartz at 25 pm has an interference color no higher than medium first-order gray). 

Clean the slide with isopropyl alcohol and, using Texmet and 6-pm diamond paste or slurry, prepare a rough polish on the section. 

Wash the section with a sonic cleaner in isopropyl alcohol, rinse with isopropyl alcohol from a spray bottle, and polish with 0.25-pm diamond paste on Texmet, using the horizontal polish- 

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A half-section of a ring is shown in Fig. 16.3. The brass nipples have been removed, but two insertion holes are apparent at the center of the ring. 

Figure 17.17 Longitudinally cut half-section. Note the severe wall thinning and the perforation of the wall on the left side. Compare it to the wall thickness on the right side. Also note the circumferential band of irregular metal loss just above the threads, near the bottom of the casing.

Postgate (51) observed a high concentration of a type of cytochrome, designated cytochrome cz, in the strictly anaerobic sulfate-reducing bacterium, Desul/ovibrio. The cytochrome Cz Desulfovibrio vulgaris has been shown to possess a very low redox potential (—0.205 V), two heme groups per mole and a sequence which implies two half sections, each of which binds a heme group (52). 

Fig. 20 a Equi-contour (2.1 elk3) density map of the MEM charge density of the half section of Sc3 C82. The CIV axis is almost perpendicular to the figure plane, b MEM charge density of the (100) section. Contour lines are drawn from 0.0 to 6.0 elk with 0.3 elk intervals, c Schematic representation of the structure model of Sc3 C82 corresponding to figure a... 

Fig. 18a Centrifugal compressor, quarter Fig. 18b One half section of a wet gas centrifugal...

Spout-shape observations have usually been made against the flat transparent face of sectional columns, either semicircular or two dimensional. Doubt concerning distortion of the spout in a half-sectional cylindrical column by the flat face has been dispelled by Mikhailik (M13), who made parallel measurements in half and full columns, using the piezoelectric technique mentioned in Section IV,B for the latter. The absolute significance of measurements made in two-dimensional columns remains... 

Effect of substrate reflectance. The time required for the through cure of a layer is determined by the slowest curing portion. If a coating is imagined split into two parts then the slowest curing portion would usually be the lower half section adjacent to the substrate, since it absorbs the least amount of... 

Thin-Section and Half-Section Methods for Raw Feeds... 

Standard" samples of clinker, cement, and raw materials, studied microscopically, with the results of chemical analysis and x-ray diffraction, form the data base for subsequent comparisons. Study of acetic-acid residues is strongly recommended. "Half-sections" can replace thin sections, thus saving much time. 

Based on how complex the inside of an object is, difiFerent methods are used to show sectional views. Some of the common section types include / section, half section, broken-out section, rotated section, and removed section. 

Ha -tectimud views are used for symmetrical objects. For such objects, it is customary to draw half of the objea in sectional view and the other half as exterior view. The main advantage of half-sectional views is that they show the interior and exterior of the objea using one view. An example of a half-section view is shown in Figure 16.15. 

For simulation, a rectangular compartment of 80 m long, 10m wide, 8 m high with opening at one end is considered. A section of the compartment is shown in Fig. 5 (half section of a symmetric compartment is shown). As the fire source a burning wood cribs is considered for this study of fire environment inside the compartment. The volume of the fire source is taken to be 9 m (3 m X 3 m X 1 m). The source is located 24 m from open end of the compartment, i.e. left portal. The heat release rate curve, as shown in Fig. 6 is taken from experimental results measured by Ingason et al. (1994) [19] on a wood crib fire imder natural ventilation condition as mentioned therein. 

The basis of provisioning for the BCSS (BMS-D) was intended to provide commanders of small four-man Fire-Teams (half section) through to unit level with both digital map-based situational awareness and preformatted message functionahty. The Combat Net Radio (CNR) is the voice and data bearer for enabling the BMS-D and the current CNR functionality - cormnand radio net connectivity. 

Fig. 5.16 Exploded half section through center line of the fountain cell. Adapted from Ref. [93]. Copyright 1997 Elsevier...

Figure 5. (a) Simplified 2D FEM model of a furnace cooler (half section shown) at steady state, simulating a critical emergency heat flux of 1 MW/m, 1100 °C hot face temperature, 10 mm of frozen slag on the copper, and exposed refractory lined dove-tail grooves on the hot face, (b) Close up of a cooler, where the color scale has been modified such that red indicates 200 °C and dark blue 120 °C. (c) Close up of one refractory lined pocket showing incipient melting of the copper in the comers at the hot face. 

Place angle or pipe half section with open end face down on a flat surface. 

Make container from any material available. The container must be as wide as the angle or pipe half section, twice as high, and as long as the desired cut to be made with the charge. 

Place container over the liner (angle or pipe half section) and tape liner to container. 

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