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Technology, industry, architecture / Printing, printing, paper industry / Paper

(4)

MOIR - embossed paper

(5)

VERGER - watermarked paper

Kraft - extra strong wrapping paper

(6)

WATMAN - paper for drawing and drawing

VELEN - the best grade of wrapping paper, impermeable to fats and moisture

Tracing paper - transparent paper for copying drawings

CARDBOARD

TORCHON - paper with a rough surface that imitates canvas

(7)

WOSCHANKA - waxed paper

(8)

PARGAMINE - translucent wrapping paper

(9)

BIBLDROOKE - thin printing paper

KORNPAPIR - paper with a granular surface, coated with an adhesive layer

PARCHMENT - wrapping paper impervious to grease and moisture

PRESSSPAN - thin thick cardboard with a glossy surface

(12)

SUBPARCHMENT

Word search to solve the crossword puzzle:

Replace each unknown letter with *. For example, dog * ka, * oshka, we ** a. Pairs е - ё, and - й are equated.

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Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

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Random news from the Archive

carbon dioxide plastic 05.04.2013

Chemists at Yale University and Brown University may have made a breakthrough in the production of chemical raw materials. Scientists have found a cheap and effective way to create acrylate from "free" carbon dioxide - the most important industrial raw material. Many things are made from acrylate, in particular, plexiglass, plexiglass, paints, fabrics, etc. Chemical plants produce billions of tons of acrylate annually, usually by heating crude oil-derived propylene. It is clear that this is an expensive energy-intensive method, which is also harmful to the environment.

Since the 1980s, scientists have been exploring the possibility of creating acrylate by combining carbon dioxide with ethylene in the presence of nickel and other metal catalysts. Ethylene is cheaper than propylene and can be obtained from plant biomass, but carbon dioxide is generally plentiful. However, for many years, scientists have encountered an obstacle: instead of forming an acrylate molecule, CO2 and ethylene, as a rule, form precursor molecules with five-membered rings of oxygen, nickel and three carbon atoms. It is very difficult to "break" this ring, so the production of acrylate from alternative raw materials becomes more expensive.

Now scientists have found that five-membered rings are easily destroyed by special substances, Lewis acids, which are electron acceptors. Acids "steal" electrons from the bonds between nickel and oxygen, this weakens the structure of the five-membered ring, as a result of which it breaks down and gives the desired acrylate at the exit.

To demonstrate the high potential of the new technology, the scientists used readily available boron-based acids. True, this is too strong an acid for widespread industrial use, and scientists are currently looking for other suitable Lewis acids, since there are quite a few of them.

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