Striker

The principle of the safety match is also used in the pull-wire fuse lighter used to start a fuse train for the ignition of fireworks items or more frequently for blasting work. This is a reversed pull match whereby the striker material is coated on a pull wire, and the match head material is within a small metal cup in a cardboard tube. Pulling the coated wire vigorously out of the device ignites the match mixture in the tube for fire transfer to the tubular fuse train. 

Match buttons and strikers are built-in components of certain flares such as the weU-known red-buming railroad fusee (3) and of some fire-starting devices invented during World War II to help marooned military personnel to light a fire with a minimum of effort. 

Table 1. Composition of Commercial Safety Matches and Strikers...

Foams have limited use for these purposes. Rigid cellular PVC is good as a thermal barrier but aot for stmctural parts. Doors and frames of stmctural molded foam, eg, foamed high impact polystyrene, can be made by iajection mol ding, with recesses for hinges, striker plates, and miter corners. Sohd polystyrene and stmctural foam-molded polyurethane have been molded for door frames. 

FIG. 21-28 Sloping striker plate in the belt of an apron feeder ensures the flow of non-free-flowing solids, Couitesif of Chemical Engineering,)... 

Typical safety match head and striker compns are given in Tables 1 2 (Ref 8)... 

Heavens Field suggest that both gas cavities, sealed off during fusion of the sample, and high flow rate shearing near the impacting striker edge contribute to hot spot formation during PETN impact initiation... 

Elliot SJ, Striker LJ, Stetler-Stevenson WG, JacotTA, Striker GE (1999) J Am Soc Nephrol 10 62... 

The editorial effort demanded by this book did not seem formidable at the onset, but we definitely underestimated the amount of work involved. We would not have been able to finish without the dedicated efforts of several people, including Peg Pankratz, Monica Striker, and Karen McNeil, who worked far beyond the call of duty in preparing not only our contributions but also submissions for a number of other authors. We are grateful to Christopher O Brien for editorial assistance and to the Portland State University Chemistry Department for support. 

How can you make a polyester and a polyamide Objectives Prepare a polyester from phthalic anhydride and ethylene glycol. Prepare a polyamide from adipoyl chloride and hexamethylenediamine. phthalic anhydride (2.0 g) sodium acetate (0.1 g) ethylene glycol (1 mL) 5% adipoyl chloride in cyclohexane (25 mL) 50% aqueous ethanol (10 mL) 5% aqueous solution of hexamethylenediamine (25 mL) 20% sodium hydroxide (NaOH) (1 mL) scissors copper wire test tube test-tube rack 10-mL graduated cylinder 50-mL graduated cylinder 150-mL beakers (2) ring stand clamp Bunsen burner striker or matches balance weighing papers (2)... 

Marin-Castano, ME, Striker, GE, Alcazar, O, Catanuto, P, Espinosa-Heidmann, DG, and Cousins, SW, 2006. Repetitive nonlethal oxidant injury to retinal pigment epithelium decreased extracellular matrix turnover in vitro and induced sub-RPE deposits in vivo. Invest Ophthalmol Vis Sci 47,4098-4112. 

Impact sensitivities of mixtures of red phosphorus with various oxidants were determined in a direct drop-ball method, which indicated higher sensitivities than those determined with an indirect striker mechanism. Mixtures with silver chlorate were most sensitive, those with bromates, chlorates and chlorites were extremely sensitive, and mixtures with sodium peroxide and potassium superoxide were more sensitive than those with barium, calcium, magnesium, strontium or zinc peroxides. Mixtures with perchlorates or iodates had sensitivities comparable to those of unmixed explosives, such as lead azide, 3,5-dinitrobenzenediazonium-2-oxide etc. 

Striker G, Subramaniam V, Seidel CAM, Volkmer A (1999) Photochromicity and fluorescence lifetimes of green fluorescent protein. J Phys Chem B 103 8612-8617... 

PRESSURE WILL FORCE LID DOWN CAUSING STRIKER TO BREAK GLASS TUBE-... 

However, phosphate salts are not volatile. We must constantly remember that mass spectrometry is a gas-phase experiment. Materials to be examined by mass spectrometry must ultimately be made gaseous. Figure 19.14 shows the atmospheric pressure ionization source chamber of a mass spectrometer after infusion of a 20 mM potassium phosphate-containing mobile phase into the instrument for a few hours. The accumulation of phosphate salts on the striker plate is evident. Visual evidence of salt accumulation is also apparent on the back wall of the source chamber, above the striker plate. The overall haziness of the image is not the result of poor photography, but rather due to the coating of dust on the inner walls of the chamber and all surfaces within. 

Fig. 19.14. Accumulation of phosphate salts in the atmospheric pressure ionization chamber. Note the large accumulation of salts on the striker plate. Additional accumulation of salts can be seen on the back walls of the chamber. The general dustiness in the chamber is salt accumulation. This source is a z-spray ionization source chamber of a Micromass Quattro Ultima mass spectrometer system.

Shulman HM, Sullivan KM, Weiden PL, McDonald GB, Striker GE, Sale GE, Hackman R, Tsoi MS, Storb R, Thomas ED. Chronic graft versus host s3mdrome in man. A long-term clinicopathologic study of 20 Seattle patients. Am J Med. 1980 69 (2) 204 17. 

---