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

In which country can older people increase the green time at a traffic light? 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?

In which country can older people increase the green time at a traffic light?

Many pedestrian crossings in Singapore with push-button traffic lights are equipped with an assistance system for the elderly and disabled. Pedestrians of these categories can order a special card and present it to the reader instead of pressing a button.

After card verification, the system will turn on the green signal for a longer than usual time - depending on the length of the transition, from 3 to 13 seconds will be added.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

Which national flag has different front and back sides?

This is the flag of the South American state of Paraguay. On one side, it depicts the coat of arms of the country, and on the other, the seal of the Ministry of Finance. The background of the flag is the same on both sides - these are stripes of white, red and blue.

 Test your knowledge! Did you know...

▪ How did the Grand Duke of Kyiv Vladimir Svyatoslavovich motivate his rejection of Islam?

▪ In how many Soviet films did the bronze statue of Pegasus, which he examined in the Gorbunkov store, play?

▪ What is the difference between white, green and purple asparagus?

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

Created a genetic scheme 21.10.2012

Bioengineers at the Massachusetts Institute of Technology have created a highly complex genetic blueprint using genes found in the Salmonella bacterium.

Using genes as parts of a constructor, scientists have the ability to create synthetic constructs that can perform various functions. For example, scientists at MIT have previously created bacteria that can react to light and take "photographs," as well as microorganisms that can detect low oxygen levels and high cell density (phenomena found in tumors). However, most of these projects use a small number of known parts of the genome, which does not allow the creation of complex schemes.

To increase the complexity of the circuits, scientists need components that will not interfere with each other. The fact is that, unlike electronic circuits on a silicon crystal, biological circuits in a cell cannot be physically isolated from each other. In a living cell, the cellular mechanisms for reading genes and synthesizing proteins are mixed together, and the bioengineer must take into account the possible incompatibility of different parts of the "constructor". To solve this problem, scientists carefully studied the Salmonella bacterium. This bacterium has a well-defined pathway for the introduction of proteins into human cells, making it an ideal sample for research.

As a result, 60 different versions of this pathway were found in other types of bacteria, and it turned out that most of the proteins involved in each of them were very different and did not interfere with each other. Thus, bioengineers received a lot of new details for their "constructor". In this case, to reduce crosstalk between several components of the future circuit, the method of directed evolution was used, i.e. mutation of genes to create thousands of their variants and select the most suitable ones.

MIT scientists have done a lot of work and have come up with a synthetic circuit that can detect the presence of four different molecules. This scheme can be used to program living cells to detect certain chemicals. In the future, such complex circuits can perform a variety of functions and control living cells.

Other interesting news:

▪ quantum flute

▪ New small craft tracking technology

▪ Interesting life improves immunity

▪ LPS33HW - water proof pressure sensor

▪ Music is the secret of children's progress

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ site section Parameters of radio components. Article selection

▪ article Unripe mind, the fruit of a short-lived science! Popular expression

▪ article What's inside a coconut? Detailed answer

▪ Dracaena article. Legends, cultivation, methods of application

▪ article Automated energy saving. Encyclopedia of radio electronics and electrical engineering

▪ article Adjustable voltage converter for LDS. 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