Scale - as printed. Drawing, description

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Scale - as printed. Tips for the home master

Builder, home master

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Any scratches or scale divisions applied to metal or plastic surfaces of objects will become clearer if they are first covered with paint and then wiped: the recesses will retain paint residue and will be as if printed.

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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. ... >>

Advanced Infrared Microscope 02.05.2024

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Air trap for insects 01.05.2024

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Random news from the Archive

hypoallergenic poplar 24.12.2022

The researchers have edited the genes of the trees so that in the spring they produce only "hairless" seeds that do not cause allergies.

Selective breeding of plants is very broad and is aimed at giving them new useful traits or enhancing certain qualities. For example, scientists change the size, appearance, nutritional value, yield, resistance to pests, heat, cold, salinity or drought.

As a rule, such work is carried out by selecting and crossing individual plants that have the necessary properties. However, the work is laborious and usually requires a certain amount of waiting time for the plants to mature.

If the reproductive cycle of vegetable plants is only a few months, then for trees this period can include several years - this is a very long cycle, which significantly slows down the work of scientists. But it seems that in a new study, scientists from the University of Georgia solved two main problems at once - firstly, they reduced the reproductive cycle of poplars, and secondly, they made their seeds “naked”, and therefore hypoallergenic.

In the course of the study, the scientists turned to the CRISPR gene-editing system to try to speed up the process. For their experiment, the scientists chose poplar, which has a long juvenile period - from 7 to 10 years.

Previously, in such studies, scientists usually focused on gene regulators that directly affect the development of the plant. But, unfortunately, success in poplar research seemed patchy. In the new study, scientists completely changed the approach and eliminated the negative impact.

Using the CRISPR gene editing system, the scientists eliminated the CENTRORADIALIS (CEN) gene, which suppresses flowering initiation in young plants. According to study co-author CJ Tsai, he and his colleagues managed to reduce the flowering time of poplar from at least 7 years to 3-4 months, and the annual period of organ development to several days.

Scientists believe that this breakthrough will further allow scientists to accelerate the process of deducing new beneficial traits in plants. By the way, researchers have already taken advantage of this “accelerator” of the process - in the course of the study, they were able to edit another poplar gene to reduce the number of cotton-like seed attachments that cause allergies in thousands of people. Tsai says the study has been successful, and scientists have now provided the molecular basis for growing "bald" seeds, which can further reduce the amount of allergens carried.

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