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Trauzl lead block before and after a test (1 – sand | 2 – Explosive and detonator | 3 – lead) The test is performed by loading a 10-gram foil-wrapped sample of the explosive into a hole drilled into a lead block with specific dimensions and properties (a soft lead cylinder, 200 mm diameter and 200 mm high, with the hole 125 mm deep, and ...
Oscilloscope OL-1 from 1954, the company's first with a relatively small 3-inch CRT which allowed for a highly competitive price of US$ 29.50 (equivalent to $335 in 2023) for the DIY kit. [1] Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company.
It is designed such that someone with a normal mechanical ability would be able to construct it before or during a nuclear attack, using common household items. [ 1 ] The Kearny fallout meter was developed by Cresson Kearny from research performed at Oak Ridge National Laboratory and published in the civil defense manual Nuclear War Survival ...
Lead climbing (or leading) is a technique in rock climbing where the 'lead climber' clips their rope to the climbing protection as they ascend a pitch of the climbing route, while their 'second' (or 'belayer') remains at the base of the route belaying the rope to protect the 'lead climber' in the event that they fall. The term is used to ...
A first aid kit or medical kit is a collection of supplies and equipment used to give immediate medical treatment, primarily to treat injuries and other mild or moderate medical conditions. There is a wide variation in the contents of first aid kits based on the knowledge and experience of those putting it together, the differing first aid ...
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The Duquenois reagent is used in the Rapid Modified Duquenois–Levine test (also known as the simple Rapid Duquenois Test), which is an established screening test for the presence of cannabis. The test was initially developed in the 1930s by the French medical biochemist Pierre Duquénois (1904–1986) and was adopted in the 1950s by the ...
Test results may be provided immediately, after a short waiting period, or later. Drug checking services use this time to discuss health risks and safe behaviour with the service users. [ 3 ] The services also provide public health information about drug use, new psychoactive substances and trends at a national level.