Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

What troops in the Russian-Turkish war marched to the wedding march of Mendelssohn? Detailed answer

Big encyclopedia for children and adults

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

Comments on the article Comments on the article

Did you know?

What troops in the Russian-Turkish war marched to the wedding march of Mendelssohn?

Seeing off the troops to the Russian-Turkish war in 1877, Emperor Alexander II was amazed at the bearing of the soldiers of the Life Guards of the Cossack Regiment: "They go to war, like to a wedding!", After which he officially appointed Mendelssohn's wedding march as the march of this regiment.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

What is DAX?

This is a German generalized index of stock prices, determined by the analysis of "blue chips" on the Frankfurt Stock Exchange.

 Test your knowledge! Did you know...

▪ What is garlic called in China?

▪ Where was the childlessness tax?

▪ Why are tigers sometimes born with white fur?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

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

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. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Subcutaneous nanosensor 07.11.2013

Nitric oxide (NO) is one of the most important molecules in living cells. It is responsible for the delivery of signals within and between cells, and coordinates the work of the immune system. Many cancer cells have abnormal levels of nitric oxide, but scientists don't know exactly how this gas works. So, according to them, the role of nitric oxide in the progression of cancer is highly controversial, and scientists need new tools to understand the process.

Researchers at the Massachusetts Institute of Technology have developed a new tool to measure the body's nitric oxide levels in real time. The sensor designed by engineers can be implanted in the body (under the skin) for more than a year and control the process of inflammation - the process during which NO is produced.

This work is the first proof that nanosensors can be used directly in the body for an extended period of time. Sensors made of carbon nanotubes are expected to be used, among other things, to detect other molecules, such as glucose. Already, a team of researchers is working on a sensor for diabetics that will monitor sugar and insulin levels without the need to take blood samples.

Carbon nanotubes one nanometer thick, scientists consider promising for the manufacture of sensors. Researchers at the Massachusetts Institute of Technology have recently developed carbon tube sensors for various molecules, including hydrogen peroxide and sarin. Such sensors use the fluorescence of carbon nanotubes: when a nanotube binds to a particular molecule, it glows brighter or dimmer.

In the new work, the researchers modified the nanotube to create two different types of sensors: one for insertion into the bloodstream for short-term monitoring, and the other for long-term implantation under the skin.

To improve sensor performance, scientists used a biocompatible polymer (polyethylene glycol), which prevents particles from sticking together in the bloodstream. Experiments on mice have shown that in this case, the particles can pass through the lungs and heart without causing any damage. Most particles accumulate in the liver, where they are used to monitor NO levels. At the same time, the researchers note that so far they have studied only the liver, but now they see that the particles remain in the blood. This means that it is possible to study different areas of the body with the help of nanoparticles.

The sensor for long-term residence in the body consists of nanotubes embedded in an alginate gel (a polymer derived from algae). After implantation under the skin of mice, the gel remained in place and functioned for 400 days. But the researchers suggest that the life of the sensor can be extended. In the future, such a sensor would be useful for monitoring cancer or other inflammatory diseases, and for detecting immune responses in patients with artificial hips or other implanted devices.

Scientists are now working on adapting this technology for glucose detection. It is assumed that nanotubes will replace electrochemical sensors for measuring blood sugar levels, which do not work for long, and also increase the risk of infection due to the penetration of the electrode under the skin. But the new sensor will determine the level of sugar in real time, and the insulin pump connected to it will supply the hormone in the right amount.

Other interesting news:

▪ MB86064 - 14-bit D/A Converter

▪ Nanotechnology against mosquitoes

▪ liquid metal robot

▪ Tsunami pacified by mathematics

▪ Organic LEDs for Medical Devices

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site History of technology, technology, objects around us. Article selection

▪ article Kazan orphans. Popular expression

▪ article How did Edith Piaf help French prisoners of war escape from German camps? Detailed answer

▪ article Deputy director of the school for academic work. Job description

▪ article Power amplifier for dynamic lighting installation. Encyclopedia of radio electronics and electrical engineering

▪ article Power supply 12 volts for security systems (module 24). Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024