Tinfoils

The two highest concentrations of tannic acid (0.051 and 0.034%) resulted in a linear increase of virus titer up to 21 days after inoculation, even though the reduction of starch lesion formation was 91 and 64%, respectively. Thus, the virus must have replicated beyond the limitation of starch lesions. Further experiments indicated that a systemic spread of the virus into the primary leaves in cucumber plants could be obtained by daily brushing the noninoculated primary leaves (only the cotyledons were inoculated) with tannic acid following a vacuum infiltration of whole plants with 0.051% tannic acid 24 hours after virus inoculation. Primary leaves were shielded by tinfoil during the inoculation of the cotyledons to prevent accidental infection. Aerosol O.T. (0.1%) was incorporated in tannic... 

Fig. 2. Diagram of humidity chamber made from a plastic box. Water at the bottom of the chamber ensures a high humidity once the lid covers the chamber, this prevents significant evaporation of the slides placed on shelves. The sections are encircled by the lipid content from a DAKO pen, limiting the amount of antibody used. The chamber is wrapped in tinfoil from the start when used for alkaline phosphatase experiments. 

Add 20% swine serum in TBS for 20 min in a humidity chamber (see Fig. 2) sealed with tinfoil. Pour off the swine serum and dry with paper towels around the circles made by the DAKO pen. 

Develop with (naphthol AS-BI phosphate/Fast Red, fresh made) for 20 min in the dark (in tinfoil-sealed humidity chambers). For preparation of developer, see Subheading 5.1.1.1, item 4. 

Packaging container such as rubber condoms, tinfoil bindles or plastic baggies... 

Bear in mind that present-day tinfoil is almost always aluminium. 

Two strips of tinfoil were included on the electrical circuit of a chronograph and the time between their breaks served to aid in the calcn of deton velocity. This was found equal to ca 28lQm/sec and there was no difference which material was used as the tube (rubber, lead, glass), provided its diameter was not below a certain value (2mm). For example, deton vel in a glass tube of 1.5mm diam was found to be for oxyhydrogen ca 2341 m/sec (Ref 5, p 144-45)... 

Pills continue to be sold mainly in loose tablet form. Sometimes sold in small plastic bags, prescription bottles, plastic wrap, coin rolls, or tinfoil, more creative packaging occasionally surfaces. For instance, in St. Louis, large quantities are sold in cigarette packs. 

The wrapping of the explosive charge, e.g. paraffined paper, parchment paper, tinfoil etc. (this factor was tested over a long period and some of the results are discussed further on p. 424). 

The CuO is now allowed to cool somewhat before being introduced into two clean dry flasks, which are closed with ground-glass stoppers or corks coated with tinfoil. 

In the Trauzl lead block test (often called simply the lead block test) 10 grams of the explosive, wrapped in tinfoil and stemmed with sand, is exploded by means of an electric detonator in a cylindrical hole in the middle of a cylindrical block of lead, and the enlargement of the cavity, measured by pouring in water from a graduate and corrected for the enlargement which is ascribable to the detonator alone, is reported. For the standard test, the blocks are cast from chemically pure lead, 200 mm. in height and 200 mm. in diameter, with a central hole made by the mold, 125 mm. deep and 25 mm. in diameter The test is... 

In practice, more flame is desired than ammonium dichromate alone will give. Weingart34 recommends a mixture of 2 parts of ammonium dichromate with 1 of potassium nitrate and 1 of dextrin. Tinfoil cones are made from circles of tinfoil shaped on a former, and are introduced by means of the former into conical cavities in a block of wood they are then about half filled with the powdered mixture, a Pharaoh s serpent s egg is pressed in, and the edges of the tinfoil are turned down upon it to form the base of the cone. 

I have here two pieces of platinum, and if I lay them down upon this piece of paper [the moistened paper on the tinfoil], you will see no action and if I take them up, there is no change that you can see, but the arrangement remains just as it was before. But, now,... 

Cupronickel and copper alloy cups that are filled with a mercury fulminate-based primer composition are closed with a tinfoil disc that is varnished on the side that is in contact with the primer composition. A varnish that is frequently used for this purpose is shellac grade 1. After fitting, the cup annulus is coated with a clear varnish to prevent the ingress of moisture or oil. 

There is no lead or barium in the primer yet discharge particles from this ammunition frequently contain lead, antimony, and barium. The lead and barium must come from other components in the ammunition (bullet core/propellant) and/or from contamination in the firearm. Tin was also frequently present in the discharge particles and originates from the tinfoil disc used to seal the primer cup in mercury fulminate primers. 

This supports the proposition that anything present in a round of ammunition can make a contribution to the composition of the discharge residue particles. The presence of tin in any of the discharge particles is an indication that the primer contains mercury, the tin originating from the tinfoil disc used to seal mercury fulminate. (Tin is also present in some modern ammunition components, for example, Sellier Bellot, and it is present in some propellants.)... 

Electrical contacts required to complete detonation circuits need not be klutzy affairs characterized by 16-gauge wire. Tinfoil and light 28-gauge wire can be made to perform quite adequately as improvised triggers, as shown in Figurc8. 

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