Transmission masts

The many options available for lift trucks f l into two classes vehicle specialties, which include controls, transmissions, guards, etc. and accessories, which are devices that handle specific types of loads (Fig. 21-55). Included in this second category are high-lift masts, up to 7 m (24 ft) handhng attachments for circular products, such as drums and roll goods attachments such as carton clamps and the fork side-to-side shifting mechanism. 

Zinc-coated structures are used in pylons carrying electrical transmission lines, in masts for radio, television and radar aerials, and for supports for overhead wires on electrihed railways. 

Mast EE, Harmon MW, Gravenstein S, et al. Emergence and possible transmission of amantadine-resistant viruses during nursing home outbreaks of influenza A (H3N2). Am J Epidem 1991 134(9) 988—997. 

SP from primary afferents has a number of other effects on target cells besides pain transmission, e.g. vasodilatation, plasma protein extravasation, mast cell degranulation, recruitment of inflammatory cells, stimulation of secretion and muscle contraction (Maggi, 1997). The role of SP as an endogenous vasodilator in cerebral circulation and resulting effects on pain production have been discussed by Beattie et al. (1995a). 

Reeves JJ, Jones CA, Sheehan MJ, Vardey CJ, Whelan CJ (1997) Adenosine A3 receptors promote degranulation of rat mast cells both in vitro and in vivo. Inflamm Res 46(5) 180-184 Ribeiro JA, Walker J (1975) The effects of adenosine triphosphate and adenosine diphosphate on transmission at the rat and frog neuromuscular junctions. Br J Pharmacol 54(2) 213-218 Ribeiro JA, Sebastiao AM (1984) Enhancement of tetrodotoxin-induced axonal blockade by adenosine, adenosine analogues, dibutyryl cyclic AMP and methylxanthines in the frog sciatic nerve. Br J Pharmacol 83(2) 485—492... 

Serotonin was discovered as a potent vasotonic ligand. It plays a role in the inflammatory chemical milieu and is released from platelets, mast cells, and basophils in injured or inflamed tissues as a critical factor in the control of nociceptive transmission (Doak and Sawynok, 1997 I>ray, 1995 Tokunaga et al., 1998 Zeitz et al.,... 

Mast EE, Goodman RA, Bond WW, et al. (1995) Transmission of blood-borne pathogens during sports risks and prevention. Ann Intern Med 122 283-285... 

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