Casting circular

Aircraft Parachute Flare, M26A1. shown on Figs 2-24 2-25, is intended for illumination in night bombardment. It is parachute-supported type which burns with a yellowish light and casts circular usable illumination upon the terrain 1500 feet in diam. By use of an MT fuze of the Mill Series the flare may be released from altitudes 2500 to 25000 feet at 350 mph true air speed... 

Extmsion of polyethylene and some polypropylenes is usually through a circular die into a tubular form, which is cut and collapsed into flat film. Extmsion through a linear slot onto chilled rollers is called casting and is often used for polypropylene, polyester, and other resins. Cast, as well as some blown, films may be further heated and stretched in the machine or in transverse directions to orient the polymer within the film and improve physical properties such as tensile strength, stiffness, and low temperature resistance. 

The first of these reactions takes place at temperatures of about 150°C, the second reaction proceeds at about 550—660°C. Typical furnaces used to carry out the reaction include cast-iron retorts the Mannheim mechanical furnace, which consists of an enclosed stationary circular muffle having a concave bottom pan and a domed cover and the Laury furnace, which employs a horizontal two-chambered rotating cylinder for the reaction vessel. The most recent design is the Cannon fluid-bed reactor in which the sulfuric acid vapor is injected with the combustion gases into a fluidized bed of salts. The Mannaheim furnace has also been used with potassium chloride as the feed. 

The special forms consist of the many types of anode which are used for protecting smaller containers. Boilers, heat exchangers and condensers belong to this group. Besides the rod anodes already mentioned with tube screw joints which can be screwed into the container from outside, there are also short and round anode supports as well as more or less flat ball segments which are bolted onto the protected surface with cast-on supports. These shapes are mostly manufactured from magnesium alloys. In addition, there are star-shaped or circular anodes for installation in condensers and pipes. The weight of these anodes lies between 0.1 and 1 kg. 

This plant is circular in plan, and consists essentially two cast-iron cylinders (19) and (20), the first of lich is supported on its base and free to expand up-irds, while the other is hung from a flange at its top, d is free to expand downwards The annular space... 

The DNA-lipid cast film was stretched ca. three times in length (ca. 20 p.m thick) in the wet state, and X-ray diffraction patterns are shown in Fig. 7b. When the incident beam was irradiated parallel to the top edge of the stretched film, the circular reflection of 41 A was observed. When the beam was exposed parallel to the side edge and perpendicular to the film plane, the diffraction on the equator appeared as two spots of 41 A indicating a distance between the DNA-lipid strands and the diffraction on the meridian of 3.4 A. The distance between parallel stacked base-pairs was clearly observed [2-4]. These findings clearly show that DNA strands are ahgned... 

Explosives Sensitivity Data. Card-gap and projectile sensitivity, data are presented by Watson (Ref 1) for a wide variety of expl compns tested at the USBurMines laboratories in more or less standard test geometries. The results of both tests are in good agreement in that they provide the same sensitivity ordering fbr different subclasses of expls. Least sensitive were homogeneous liquids that did not exhibit a tendency, to undergo low-velocity detonation, AN-FO (Ammonium Nitrate-Fuel Oil), and most cast military expls. Of intermediate sensitivity were pressed and powdered military expls, cast Pentolite, permissible and nonpetmissible water-based expls, and one commercial two-component expl. The most sensitive were permissible and nonpermissible Dynamites and expls susceptible to low-velocity detonations Refs I) R.W. Watson, 1 Card-Gap and Projectile Impact Sensitivity Measurements, A Compilation , USBurMines Information Circular 1C 8605(1973)... 

Manufacture of casting powder a product containing all the nitrocellulose and solid ingredients and a portion of the plasticizer is made in the form of a right circular cylinder approximately 1 mm. in diameter and length. 

Matrices of monoisopropyl ester of PVM-MA were prepared by solvent casting. 5 g of 50% isopropanol solution of the polymer were dissolved in 50 ml of acetone methanol (1 1) mixture and the solution mixed. 50 mg (0.116 mmol) or 125 mg (0.289 mmol) of timolol were added and the solution was gently mixed for 3 h. The solution was cast on Teflon-coated Petri dishes and allowed to evaporate at room temperature. Circular matrices with diameters of 5 mm in vivo study) or 13 mm in vitro study) were cut with a cork borer and kept in a desiccator until used. 

FIG. 1.12 Electron micrograph of two different types of particles that represent extreme variations from spherical particles (a) tobacco mosaic virus particles (Photograph courtesy of Carl Zeiss, Inc., New York) and (b) clay particles (sodium kaolinite) of mean diameter 0.2 fim (by matching circular fields). In both (a) and (b), contrast has been enhanced by shadow casting (see Section 1.6a.2a and Figure 1.21). (Adapted from M. D. Luh and R. A. Bader, J. Colloid Interface Sci. 33, 539(1970). 

The cast-iron mains are generally of such a lenglh as to reach over two benches, and the joints are mado with bolts and nuts, and iron cement, in the usual manner. In old works, the hydraulic main is usually a circular tube but of late years, D-shaped mains have been frequently employed, generally with the fiat side downwards. 

Bruhtoh s calciner is shown in. Fig. 602, It is a circular cast-iron table fixed on a stout central shaft,... 

Consider the flow of an incompressible fluid in the entry region of a circular duct, assuming that the inlet velocity profile is flat. As is often the case, the problem can be generalized by casting into a nondimensional form. A set of nondimensional variables may be chosen as... 

Most LLDPE produced worldwide is made into thin film, either melt blown or cast from the melt. Blown film is produced by extrusion of LLDPE melt through a circular die with a large diameter, up to 100-120 cm. and a narrow gap, usually less than 1 mm. The tube of molten polymer expands from internal air pressure and forms a bubble of a larger diameter, Typically, the blow-up ratio, the ratio of the final film tube diameter to the circular-die diameter, is between 1.5 1 and 4 1. LLDPE cast film is manufactured by depositing potymer melt on a rotating heated... 

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