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20/20 (stylized as 20 20) is an American television newsmagazine that has been broadcast on ABC since June 6, 1978. Created by ABC News executive Roone Arledge, [1] the program was designed similarly to CBS's 60 Minutes in that it features in-depth story packages, although it focuses more on human interest stories than international and political subjects.
To avoid toxicity and risk of side effects, FDA guidelines recommend an initial dose of methamphetamine at doses 5–10 mg/day for ADHD in adults and children over six years of age, and may be increased at weekly intervals of 5 mg, up to 25 mg/day, until optimum clinical response is found; the usual effective dose is around 20–25 mg/day.
The United Nations Office on Drugs and Crime stated in its 2014 World Drug Report that US ecstasy retail prices range from US$1 to $70 per pill, or from $15,000 to $32,000 per kilogram. [215]
20 mm akan m/40 (Bofors 20 mm automatic gun L/70 model 1940) Sweden: World War II - Cold War 20 mm (0.79 in) 20 mm akan m/45 (Bofors 20 mm automatic gun L/70 model 1945) Sweden: Cold war 25 mm (0.98 in) 25 mm akan m/32 (Bofors 25 mm automatic gun L/64 model 1932) Sweden: Interwar - Cold war 25 mm (0.98 in) 1-inch Nordenfelt gun United Kingdom
These guns were initially installed in type A low-angle (25°) single mounts aboard Furutaka-class cruisers, in type C (40°) twin turrets in the Aoba class, and in type D (40°) twin turrets in the Myōkō class. Mark I guns can be visually distinguished from Mark II guns by an abrupt step in the chase diameter which was absent on the latter ...
These heavy guns were intended to be mounted in seacoast fortifications. 8-inch, 10-inch, 13-inch, 15-inch, and 20-inch bore (20, 25, 33, 38, and 51 cm) Rodman guns were produced. Other than size, the guns were all nearly identical in design, with a curving bottle shape, a large flat cascabels , and ratchets or sockets for the elevating mechanism.
The Polsten gun was used on armoured vehicles equipped with anti-aircraft guns that were based on the Cromwell/Centaur tank and for the Skink anti-aircraft tank. The Polsten was also mounted on British LVTs and on early models of the Centurion tank, not coaxially with the main gun but in an independent mount on the left hand side of the turret ...
As with other Parrott rifles, the gun breech was reinforced by a distinctive wrought iron reinforcing band. The gun fired a 20 lb (9.1 kg) projectile to a distance of 1,900 yd (1,737 m) at an elevation of 5°. The 20-pounder Parrott rifle could fire shell, shrapnel shell (case shot), canister shot, and more rarely solid shot. In spite of the ...