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Student Inventors Vie for Honors
2005-11-21 09:18:24
More than 1,000 university students from all over the country have brought their research and inventions to Shanghai to compete in the Ninth Challenge Cup over the weekend.
Unmanned fold-up mini-plane
Beihang University, Beijing

A two-meter-long aircraft with a pair of three-meter-long wings can be compressed into one square meter with wings folded under its body.

When dropped from a larger aircraft, flowing air gusts will push the wings 180 degrees to open automatically. A locking system then locks them into place.

Leng Jiazheng, a Beihang student and a chief designer, said it costs only about 6,000 yuan (US$740) to manufacture. It is designed for airdrop and surveillance.

World's smallest nano battery
Fudan University, Shanghai
Two postgraduate chemistry students have invented what some scientists call the world's smallest power source.

The single piece of cell battery is only 30 nano-meters to 200 nano-meters in diameter, or about 0.1 percent of the width of a hair.

The battery's length, about 200nm to 10nm, is only about 1 percent of a hair's diameter.

Combining groups of nano cell batteries can comprise a larger electricity power supply with a visible small size. The mini-battery can aid development of micro-electric chips and modern identity cards.

Anti-porn Web detector
Tunghai University, Taiwan
A detection system of six personal computers can patrol for pornographic content on all 420,000 Websites registered in Taiwan Province.

The system can swiftly monitor all Website pictures, illustrations and documents in a short time. Once any pornographic pictures or information are detected, the system warns users.

Tunghai professor Leu Fang-yie, the program's instructor, said the system was devised to prevent the negative impact of rampant online pornography on youth.

Students said they were expanding their system to cover all Chinese-language Websites.

SMS household security device
Hong Kong Vocational College, Hong Kong
A monitoring and alarming device is able to transfer the real-time security situation in one's home to the user's cell phone via short message.

Sensors on the device will be able to monitor movement and other situations of doors and windows, and the situation in kitchens as well as electricity supplies. If any abnormality occurs - such as door entry, fire or smoke - the system sets off a buzzing alarm and sends a SMS to the user.

(Source: Shanghai Daily)

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