Making good

In the sheeting market, the low density polyethylenes are less important than the high density resins. The high density resins have excellent chemical resistance, stress-crack resistance, durabiUty, and low temperature properties which make them ideal for pond liners, waste treatment faciUties, and landfills. In thicker section, HMW-HDPE sheet makes good containers, trays, tmck-bed liners, disposable items, and concrete molds. The good durabiUty, abrasion resistance, and light weight are critical elements for its selection. 

Ironically, scrap tires make good fuel, either whole or as shredded chips, commonly called tire-derived fuel (IDE). Each tire has the heat energy of 3.2 X 10 kJ (300,000 Btu), or about the amount of energy in 13.6 kg (30 lbs) of coal or 9.4 L (2.5 gal) of oil. Also, tires are moderate in both sulfur and ash compared with bituminous coal and do not adversely affect emissions quaUty. 

Step 10. The crystaHographer, using his or her knowledge of chemical information, such as bond distances and bond angles, analy2es the peak information and assigns labels and atomic types (eg, C, N, O, Si, Fe, etc) to those peaks which make good chemical sense. 

The dry-press process is used to make good quaHty face brick, ie, brick used on exposed waHs. Very Httie water is added to the clay, less than 10% by weight. This is only enough water to make the clay damp. The damp clay is then pressed into molds under pressures of 3.4 to 10.3 MPa (500 to 1500 psi). The damp brick shapes ate removed from the molds when they have set up enough to handle and ate stacked for drying and burning. 

Loops that could not be vectorized on conventional vector computers often performed very well under the Multiflow architecture and, unlike vector machines, for which a person could spend a great deal of time optimizing programs, substantially less could be done on the Multiflow, as most of the work fell to the compiler anyway. All the usual optimizations for memory utilization and cache usage also appHed to the Microflow. There were, of course, programs for which the compiler could not make good use of the multiple functional units, and the computer would mn at the speed of just one or two iadividually quite slow functional units. 

Qualitative answers to one or more of these questions are often sufficient for making good decisions about the allocation of resources for safety improvements. But, as managers seek quantitative cost/benefit information upon which to base their decisions, they increasingly turn their attention to the use of quantitative risk analysis (QRA). 

This equipment presents problems in estimating preliminary costs, since there is seldom enough information in-house to make good correlations. Vendors are by far the best source of costs. Guthrie (Reference 23) discusses the complexities of estimating high-pressure equipment and presents some cost data. 

It is an unfortunate fact that many students and indeed design engineers are reluctant to get involved with plastics because they have an image of complicated materials with structures described by complex chemical formulae. In fact it is not necessary to have a detailed knowledge of the structure of plastics in order to make good use of them. Perfectly acceptable designs are achieved provided one is familiar with their perfonnance characteristics in relation to the proposed service conditions. An awareness of the structure of plastics can assist in understanding why they exhibit a time-dependent response to an applied force, why acrylic is transparent and stiff whereas polyethylene is opaque and flexible, etc., but it is not necessary for one to be an expert... 

Theoretical and measured strengths and stiffnesses of three-layer cross-ply laminates with cross-ply ratios ranging from. 2 to 4 are shown in Figure 4-44. The scatter in the data is partially due to the difficulty of making good tensile specimens the characteristic dog-bone shape is formed by routing that often damages the 90° layer. 

Fatty Acid and Fats. What Makes Good Soap . 157... 

Busse, /. penance, fine, penalty, biissen, v.i. atone for, make good. 

Wett-kampf, m. contest, -lauf, oi. race, wettmachen, v.t. make good, compensate for. Wettstreit, m. contest, wetzen, v.t. whet, sharpen,... 

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