Who are trichologists? Detailed answer

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Who are trichologists? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

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Who are trichologists?

These doctors are specialists in strengthening hair.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Why is water added when cooking pasta and potatoes?

Salt water boils at a temperature slightly higher than 100°C. In this case, the products are cooked faster.

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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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Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

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The power of photocells will increase by 10 times 13.05.2013

IBM Research (Zurich) and Airlight Energy SA (Biasca, Switzerland) plan to increase the power output of high-density photovoltaic cells by at least tenfold by using a microfluidic cooling system along with industrial three-junction photocells.

The resulting 25-kW power plants with solar energy concentrated on a 50-foot parabolic mirror will be built in Biasca and Rueschlikon (Switzerland) thanks to a grant from the Swiss Commission for Technology and Innovation. Together with IBM and Airlight Energy, the Swiss Federal Institute of Technology (ETH) from Zurich and the University of Applied Sciences from Bux (Switzerland) will work on the project.

"We're using the same water-cooling technology that IBM has built for high-performance computers to achieve a 10-fold reduction in solar cell thermal resistance," said Bruno Michel, Head of Chassis Thermals at IBM Research. "As a result, we showed that commercially available three-junction solar cells, which absorb almost the entire spectrum of solar energy at 80% efficiency, can now operate with 2000 to 5000 times concentrated solar energy, compared to 300 to 500 times concentrated for air-cooled cells."

A higher concentration of solar energy is achieved by an array of 36 mirrors on a 50-foot dish that rotates behind the sun, directing energized beams onto an array of over a hundred three-junction photocells mounted on a central frame, each generating 200-250 watts. Without IBM's water-cooling system, the concentrated energy of the sun's rays can generate enough heat to vaporize the solar cell crystals. Instead, the IBM microfluidic substrate conducts heat away from the photovoltaic cells through a hierarchical system of water channels.

The High Concentration Thermal Photovoltaic (HCPVT) system, built by IBM and Airlight Energy, concentrates the sun onto a hundred three-junction microfluidic-cooled photovoltaic cells and provides 25kW of electricity.

And just as water-cooled data centers use chip-heated water to heat neighboring buildings, solar power plants will be adapted to use waste hot water. However, since most of the proposed installations will be located in warm climates, IBM is experimenting with the use of warm water in absorption refrigeration systems that will replace traditional air conditioners, as well as in desalination plants.

The main goal of the project is the production of electricity from solar, the cost of which will not exceed the cost of electricity from coal-burning generators, i.e. about 5-10 cents per kWh. Using inexpensive concrete and pressed metal foil, IBM says the cost of industrial plates should drop to $250 per square meter. m, which is three times cheaper than existing photovoltaic concentrators.

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