Major achievements of biotechnology in the world today

1. Japan developed anti-drowsy seats to improve driving safety.

Extreme fatigue often makes people doze off during driving, which will greatly increase the incidence of traffic accidents. A research team at the University of Tokyo has recently developed an anti-drowsiness chair, which helps to solve this problem.

According to local media reports, after observing the blood flow and breathing state of people when they doze off, the researchers found that the blood flow of human peripheral blood vessels will increase to some extent before entering the doze state. This kind of seat can detect this change from the driver's back by using the electromagnetic sensor and pressure sensor installed in the backrest and give a warning.

The researchers pointed out that, similar to the changes of the human body before dozing off, the blood flow and breathing state will also change after drinking alcohol. In the future, the research team also plans to develop an "anti-drunk driving seat" that can't start the car when drinking.

2. American scientists created the bionic eye to help the blind recover their sight.

American scientists say that bionic eye implants will be provided within two years to help millions of blind people recover their sight.

American researchers were allowed to install the bionic eye for 50 to 70 patients in five treatment centers within two years.

The "Argus II" system is named after Agrus, a giant with 100 eyes in Greek mythology, and uses a camera mounted on glasses to transmit visual signals to electrodes in the eyes.

Patients who have received less advanced artificial retina transplantation before can "see" the movement of light, images and objects. But the image is not clear enough.

A blind man had the operation on 1999. Now he can avoid long or low branches on the street, but when he looks at people, he seems to see a black shadow.

However, scientists at the University of California say that their bionic eyes try to get real-time images from the camera, then convert them into weak electrical signals, transmit them to a receiver, then stimulate the visual nerve of the retina and send signals to the brain through electrodes, so that the blind can "see" the scene.

This new device is smaller than the traditional artificial retina, but it has as many as 60 electrodes, which makes the resolution higher. The area is only one square millimeter, and the implantation operation is easier.

The world's first quantum computer was born in Canada.

Gini Ross, chief technology officer of D-Wave in Vancouver, Canada, announced that the company has successfully developed a quantum computer with 16 qubit. He revealed that D-Wave will show their quantum computers in California and Vancouver, Canada on February 13 and February 15, 2007 respectively.

Quantum computer is a concept put forward by physicist Feynman in the 1980s of 19. Quantum bits can represent 1 and 0 at the same time, so they can carry more information and solve problems faster. Quantum computers hope to use quantum phenomena to improve the computing speed. The biggest feature is that n storage bits can store 2N data at the same time. However, the biggest problem of quantum computers is that they will shut down as long as they are subjected to any micro-interference, such as overheating. So far, quantum computers can only operate successfully for thousands of times in the laboratory, and the stability is still not enough. The 16 qubit computer currently designed by D-Wave Company is made of precious metal niobium, and it must run at-273 K. ..

Some experts believe that D-Wave's attempt is only a principle test. Although it is necessary, the inevitable mistakes in quantum computing must be corrected first, otherwise the quantum computer will not run. Many scientists believe that it will take another 20 years for quantum computers to be widely commercialized. But Ross thinks that in 2008, they will make the world's first quantum computer with 1000 qubit.

American scientists created "bionic eye" to help the blind recover their sight.

American scientists say that bionic eye implants will be provided within two years to help millions of blind people recover their sight.

American researchers were allowed to install the bionic eye for 50 to 70 patients in five treatment centers within two years.

The "Argus II" system is named after Agrus, a giant with 100 eyes in Greek mythology, and uses a camera mounted on glasses to transmit visual signals to electrodes in the eyes.

Patients who have received less advanced artificial retina transplantation before can "see" the movement of light, images and objects. But the image is not clear enough.

A blind man had the operation on 1999. Now he can avoid long or low branches on the street, but when he looks at people, he seems to see a black shadow.

However, scientists at the University of California say that their bionic eyes try to get real-time images from the camera, then convert them into weak electrical signals, transmit them to a receiver, then stimulate the visual nerve of the retina and send signals to the brain through electrodes, so that the blind can "see" the scene.

This new device is smaller than the traditional artificial retina, but it has as many as 60 electrodes, which makes the resolution higher. The area is only one square millimeter, and the implantation operation is easier.

5. EPC technology

Project content and application field: EPC technology is a new casting method, in which the model made of foamed plastics (EPS) is buried in dry sand without binder, compacted by microseismic negative pressure, and liquid metal is injected without core or riser, and the foam is gasified and replaced by metal during casting solidification. One-step molding, high dimensional accuracy. Greatly improve the environmental conditions of the foundry workshop and easily realize pollution-free production; The shape and structure of castings are not limited, which provides sufficient freedom for product design; Low manufacturing cost and less equipment investment.

6. Nanometer silica

Nano-silica micropowder technology is a new technology in China. Because of its large specific surface area, strong adsorption and large surface energy, micropowder has special properties and plays an irreplaceable role in many disciplines and fields. The developed countries in the world are very active in the research of ultrafine materials and have achieved certain results.

It has excellent stability, reinforcement, thickening and thixotropy, and is widely used in rubber, coating, medicine, paper making, daily chemical and other fields. , and provides a new material foundation and technical guarantee for the development of its related industrial fields, and enjoys the reputation of "industrial monosodium glutamate" and "the origin of materials science". Since its inception, it has become one of the most adaptable and fastest-growing materials science varieties in the world. Developed countries regard the development of fine inorganic materials with high functions and high added value as the focus of new materials in this century.

Originally, the domestic production of silicon micropowder used gas phase process route, and the main raw materials used were SiCl4 _ 4 _ 4 and Si (CH3) N. Because of the shortage of sources, the price was high, the output was low and the production cost was high. Although the ordinary precipitation method uses cheap raw materials, it can only produce fine powder with larger particles, and the particle size of the product is between 30 and 45 microns, which can not reach the level of ultrafine powder and can not meet the market demand. But now, some companies have put forward a new process route-chemical direct synthesis after analysis and research. This method adopts an improved precipitation method, that is, in the precipitation process, the key reaction stages and operation data are controlled by controlling particle growth with dispersant to produce silicon micropowder.

Nano-silicon powder can improve materials and products, and improve their inherent physical and chemical properties. Almost all industries need to improve product quality indicators. At present, large-size silica is produced in large quantities at home and abroad. Therefore, the successful development of this project has filled the domestic gap, opened up a new road for the production of nano-silica products in China, and played a very important role in the development of China's new material industry.

7. Air car

The top speed of the car in the air reaches 100- 120 km, the acceleration capacity of 0-50 km is 6 seconds, the driving distance is 230 km or 12 hours, and it only takes 2 minutes to add "oil" at the gas filling station, and the price is about HK$ 60,000-70,000. Now, MDI has set up a design studio, using computers to improve the appearance design to meet the needs of fashion.

Air engine is the key component of aircraft, and its shape is similar to that of in-line small internal combustion engine. It has crankshaft, piston, valve, intake pipe, exhaust pipe, timing belt and so on, but it has its own unique operating rules.