Housing for

This rule is justified by the need to limit the benzene emissions from evaporation (Tims, 1983) Figure 5.25 shows that emissions increase linearly with the benzene content of the fuel. It is noteworthy that current legislation limits the measured evaporation to 2 g per test conducted in accordance with a standard procedure (Sealed Housing for Evaporative Determination, or SHED). Yet for a fuel containing 5% benzene, an evaporation of 0.7 g benzene /test is observed. 

Fig. 11,10, 3, depicts a housing for the apparatus of Fig. 11,10, 2, a it is easily constructed from lengths of angle iron and asbestos board. If desired, torch bulbs may be fixed in the appropriate holders in the walls, and connected with a dry battery or accumulator in order to provide illumination of the melting point apparatus. The electric bulb immediately behind the apparatus should be connected to an inde pendent micro-switch. Alternatively,... 

Acrylonitrile—Butadiene—Styrene. Available only as sheet, ABS has good toughness and high impact resistance. It is readily therm oform able over a wide range of temperatures and can be deeply drawn. ABS has poor solvent resistance and low continuous-use temperature. It is often used in housings for office equipment (see Acrylonitrile polymers). 

I. G. Ryss, The Chemistry of Fluorine and Its Inorganic Compounds State PubUshiag House for Scientific, Technical, and Chemical Literature, Moscow,... 

I. G. Ryss, The Chemistry of Fluorine and its Inorganic Compounds State PubUshiag House for Scientific and Chemical Literature, Moscow, 1956, Eng. Trans. ACE-Tr-3927, Vol. II, Office of Technical Services, U.S. Department of Commerce, Washington, D.C., 1960, pp. 659—665. 

Biomedical Applications. In the area of biomedical polymers and materials, two types of appHcations have been envisioned and explored. The first is the use of polyphosphazenes as bioinert materials for implantation in the body either as housing for medical devices or as stmctural materials for heart valves, artificial blood vessels, and catheters. A number of fluoroalkoxy-, aryloxy-, and arylamino-substituted polyphosphazenes have been tested by actual implantation ia rats and found to generate Httle tissue response (18). 

Magnesium acetate also has uses as a dye fixative in textile printing, as a deodorant, disinfectant, an antiseptic in medicine, and as a reagent chemical (see Disinfectants AND ANTISEPTICS Textiles) (6). In the United States, Hoescht-Celanese and Tennessee Eastman are the principal producers of magnesium acetate. These companies make about 36,000 t/yr, which is largely used in-house for the production of cellulose acetate. 

Siting and Construction of New Control Houses for Chemical Manufacturing Plants, Safety Guide SG-22, Chemical Manufacturers Association (Manufacturing Chemists Association), Washington, D.C., 1978. 

The oxidative coupling of 2,6-dimethylphenol to yield poly(phenylene oxide) represents 90—95% of the consumption of 2,6-dimethylphenol (68). The oxidation with air is catalyzed by a copper—amine complex. The poly(phenylene oxide) derived from 2,6-dimethylphenol is blended with other polymers, primarily high impact polystyrene, and the resulting alloy is widely used in housings for business machines, electronic equipment and in the manufacture of automobiles (see Polyethers, aromatic). A minor use of 2,6-dimethylphenol involves its oxidative coupling to... 

Note Designations S, M and L denote the variation ol length in the motor housing for the same shaft height. 

Fig. 7.1. The British infrared telescope at Mauna Kea, Hawaii. The picture shows the housing for the 3.8 m diameter mirror, the supporting frame, and the interior of the aluminium dome with its sliding window ( 1979 by Photolabs, Royal Observatory, Edinburgh.)...

After exiting tlie riser, tlie catalyst enters the reactor. In modern FCC operations, the reactor serves two basic functions as a disengaging space for the separation of catalyst and vapor, and as the housing for the reactor-internal cyclone. 

The electric arc furnace process accounted for about 25% of the 1982 U.S. steelmaking capacity (14). Most of the raw material used for the process is steel scrap. Pollutants generated by the electric furnace process are primarily particulate matter and CO. The furnaces are hooded, and the gas stream containing the particulate matter is collected, cooled, and passed to a bag-house for cleaning. Venturi scrubbers and ESPs are used as control devices at some mills. Charging and tapping emissions are also collected by hoods and ducted to the particulate matter control device. 

Uses reported include motor housings for portable fans, food blender bases, tape storage housings, tough, clear toys, injection blow moulded products and thermoformed packages. 

The use of ABS has in recent years met considerable competition on two fronts, particularly in automotive applications. For lower cost applications, where demands of finish and heat resistance are not too severe, blends of polypropylene and ethylene-propylene rubbers have found application (see Chapters 11 and 31). On the other hand, where enhanced heat resistance and surface hardness are required in conjunction with excellent impact properties, polycarbonate-ABS alloys (see Section 20.8) have found many applications. These materials have also replaced ABS in a number of electrical fittings and housings for business and domestic applications. Where improved heat distortion temperature and good electrical insulation properties (including tracking resistance) are important, then ABS may be replaced by poly(butylene terephthalate). 

Applications include flow meter parts, transparent housing for electrical equipment, sight glasses. X-ray apparatus windows, gear wheels, racks, counters and containers for solvents. 

In the electrical industry well-known applications include switch cabinets, fuse boxes and housings for small motors, transformers and protective circuits. 

There is a frequent dememd for materials suitable for housings for computer, domestic, electrical and automotive equipment. In these applications toughness, excellent surface finish, surface durability, reasonable rigidity, dimensional stability, good weathering behaviour and low water absorption are common requirements. In these applications ABS is frequently considered first but its limited deflection temperature and heat aging resistance may lead to other... 

One of the reasons why it is important to remove suspended solids in water is that the particles can act as a source of food and housing for bacteria. Not only does this make microbiological control much harder but, high bacteria levels increase the fouling of distribution lines and especially heat transfer equipment that receive processed waters (for example, in one s household hot water heater). The removal of suspended contaminants enables chemical treatments to be at their primary jobs of scale and corrosion prevention and microbial control. 

Polycarbonate, polypropylene and modified PPO are popular materials for structural foam moulding. One of the main application areas is housings for business equipment and domestic appliances because the number of component parts can be kept to the absolute minimum due to integral moulding of wall panels, support brackets, etc. Other components include vehicle body panels and furniture. 

Typical applications for nylon include small gears, bearings, bushes, sprockets, housings for power tools, terminal blocks and slide rollers. An important design consideration is that nylon absorbs moisture which can affect its properties and dimensional stability. Glass reinforcement reduces this problem and produces an extremely strong, impact resistant material. Another major application of nylon is in fibres which are notoriously strong. The density of nylon is about 1100 kg/m. ... 

Topical applications are housings for TV sets, telephones, fascia panels, hair brush handles, luggage, helmets and linings for refrigerators. 

S. G. Lekhnitskii, Theory of Elasticity of an Anisotropic Elastic Body, Government Publishing House for Technical-Theoretical Works, Moscow and Leningrad, 1950. Also P. Fern (Translator), Holden-Day, San Francisco, 1963. 

S. A. Ambartsumyan, Theory of Anisotropic Shells, State Publishing House for Physical and Mathematical Literature, Moscow, 1961. Also NASA TT F-118, May 1964. 

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