Greases for hair. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Greases for hair. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Greases are prepared in the same way as fixatives, only the mass is made somewhat softer. You can also give the greases the consistency of butter and pour them into glass jars. For the manufacture of bryolins, mainly mineral fats and oils are used, such as vaseline, vaseline oil, ceresin and rosin. For coloring, aniline dyes are used, which are soluble in fats, such as, for example, red "Sudan", etc. Floral oils are used to perfume bryolins.

Here is a tried and tested recipe for bryolin. 50 parts of vaseline, 10-20 parts of vaseline oil, 10-20 parts of rosin, 1 part of aniline red "Sudan", 1 part of flower oil.

Author: Korolev V.A.

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Synthesized alternative DNA and RNA 24.04.2012

The journal Science reports on a giant breakthrough in genetics - a joint group of scientists from different countries managed to synthesize alternative versions of DNA and RNA. These molecules are just as capable of storing and passing on genetic information.

A group of scientists from the Laboratory of Molecular Biology in Cambridge, led by Philip Holliger, was able to do what no one else had been able to do before - using a special enzyme, they created and propagated RNA and DNA-like molecules, replacing the sugars contained in the original RNA and DNA, respectively, deoxyrase and rinase with completely different sugars. They did this "trick" six times with different sugars. Thus, they were able to claim that they had synthesized for the first time six different "xeno-nucleic acids" (XNA) - molecules that do not exist in nature, but are also capable of storing and transmitting genetic information, and in the same language.

Thus, it has been proven that DNA and RNA, the informational basis of all life on Earth, are not unique, and many alternatives can be found for them.

The main fundamental consequence of the experiments is that light has finally appeared in the window on the question of how the first RNAs appeared. Being less complex molecules than DNA, they, according to most, arose earlier, but since they themselves are incredibly complex, they simply theoretically could not have appeared spontaneously - they must have had predecessors. Most likely, these were some much simpler pra-RNAs. However, the question remained open as to how these primordial RNAs could pass on their information to their more complex descendants.

Scientists believe that a third party, a translator capable of interacting with both molecules, should have been involved here. One of the six synthesized XNAs, a nucleic acid with a skeleton of trease, the simplest sugar with amazing properties that allow a molecule based on it not only to “talk” to RNA, but also enter into its composition, would be quite suitable for the role of such a “translator”.

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