Tripod for cards. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Tripod for cards. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

So we call a miniature table no more than 10-15 cm high. It consists of a round board of approximately the same diameter and three legs. It needs to be decorated with a lid made of tin or cardboard, resembling a coffee pot lid. This lid should be wide enough to cover the table and should be about 2 cm high.

This table has an additional fake board that can be made from pewter, but it should look like wood on the outside. When a real board is covered with a fake board and both of them are covered with a lid on top, then, removing the lid, you must remove the fake board along with it. Viewers should take it for just seen fake.

The tripod can be used in pairs. For example, two forced cards chosen by the spectators may exchange places on tripods. The removed and burned card can be returned and placed on the tripod. In all these tricks, the card is placed on a false board of the table, while the card into which it will later turn is hidden in advance on the real board under the fake one.

But once you turn a card, you can no longer return it to its original position. In this regard, the tripod is inferior simple и mechanical box.

Author: Louis Hoffmann

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Thermites for biofuel production 27.02.2021

Wheat straw is a potential source of biofuels and commercial chemicals. But before straw can be turned into useful products in biorefineries, the polymers that make it up must be broken down into building blocks.

In order to convert straw into bio-raw materials, it is first necessary to break down lignin, a particularly strong polymer in straw. Microbes from the intestines of certain termite species can do the job.

In straw and other dried plant material, the three main polymers - cellulose, hemicellulose and lignin - are woven into a complex three-dimensional structure. The first two polymers are polysaccharides that can be broken down into sugars and then turned into fuel in bioreactors. Lignin, on the other hand, is an aromatic polymer that can be converted into useful industrial chemicals. Fungal enzymes can degrade lignin, which is the most difficult of the three polymers to degrade, but scientists are looking for bacterial enzymes that are easier to produce.

Previous research has shown that gut microbes from four termite species can degrade lignin in anaerobic bioreactors. In the new work, the proposed technology has been detailed, and the process by which microbes from the gut of wood insects degrade lignin in wheat straw is studied in detail.

The researchers mixed 500 guts of each of four termite species with wheat straw as the sole source of carbon. After 20 days, they compared the composition of digested straw and untreated straw.

Up to 37% lignin, 51% hemicellulose and 41% cellulose were degraded. The undecomposed lignin left in the straw has undergone chemical and structural changes, such as the oxidation of some of its subunits.

Efficient degradation of hemicelluloses by microbes could also increase the degradation of lignin cross-linked with polysaccharides. In future work, the team wants to identify the microorganisms, enzymes, and lignin degradation pathways responsible for these effects, which could find application in lignocellulose processing plants.

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