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Purdue University


Genetic algorithms 'naturally select' better satellite orbits

Purdue University engineers used genetic algorithms to design innovative constellations of satellites orbiting the Earth, reducing blackout times by 90 minutes. The algorithm discovered unconventional designs with non-equal spaced satellites, offering better performance and surprising aerospace experts.

SourcePurdue University·JournalThe Journal of the Astronautical Sciences·DateOct 15, 2001

Smallest silicon particles light way for new sensors, materials

Purdue University researchers have developed a method to stabilize the surface of porous silicon, enabling its use in creating new types of drug-delivery systems and biological sensors. By functionalizing the surface with specific chemicals, scientists can tailor the material's response to specific chemical environments or cues.

SourcePurdue University·JournalJournal of the American Chemical Society·DateSep 25, 2001

'Quantum dots' could form basis of new computers

Researchers at Purdue University have successfully linked two tiny structures called quantum dots to create a semiconductor-based quantum computer. The device uses quantum bits that exist in both on and off states simultaneously, enabling faster processing of information than conventional computers.

SourcePurdue University·JournalScience·DateSep 20, 2001

New bar coding system helps decode drug discovery

A new bar coding system developed by Purdue University chemists can quickly identify the most biologically active compounds among thousands of candidates. The method uses standard spectrometers and reduces the laborious process to a few hours, cutting down time needed to identify active compounds to zero.

SourcePurdue University·JournalJournal of the American Chemical Society·DateAug 28, 2001

Genetic secrets of metal-eating plants uncovered

Researchers identify genes from a rare Austrian plant that allow it to accumulate large amounts of nickel, enabling the potential to engineer crops to clean up polluted sites. This discovery could also lead to functional foods with micronutrients and improved crop nutrition.

SourcePurdue University·JournalProceedings of the National Academy of Sciences·DateAug 13, 2001

Engineers 'tread' toward quieter tires

Researchers at Purdue University have created a mathematical model to analyze tire vibrations and identify the components that produce the most noise. The model, which creates a visual representation of the tire's vibration pattern like a fingerprint, will help engineers design quieter tires and reduce highway noise.

Model aims to help recyclers curb high-tech trash

A new computer recycling model developed by Purdue University's Julie Ann Stuart can help recyclers determine the economic viability of processing bulk materials. The model takes into account factors such as metal prices and helps prevent financial losses for recyclers.

SourcePurdue University·JournalIEEE Transactions on Electronics Packaging Manufacturing·DateJan 10, 2001

Gel may cut doses for some medications

Researchers at Purdue University have developed a new gel-like material that can be used as a drug-delivery system, potentially replacing multiple daily medications with a single dose. The superporous hydrogels expand rapidly in the stomach, allowing medications to be absorbed more efficiently by the body.

Purdue engineers develop a chair with 'sense'

The Purdue University engineers' modified office chair uses software algorithms to interpret pressure sensor data and determine the user's seating posture. The system demonstrated an overall accuracy of 96% in distinguishing between different postures, with a special dynamic system being worked on for real-time tracking.

Small molecules used to block proteins in HIV

Researchers have developed a new approach to block HIV protease by using small molecules as a 'molecular wedge' to prevent protein interaction. This method may help prevent drug resistance and could be used to treat various diseases, including autoimmune disorders. The study is currently being tested at the National Institutes of Health.

New method speeds planning of space missions

A new mathematical technique developed by Purdue University engineer James Longuski has significantly reduced the time required to plan space missions. By using a graphical representation of possible paths and automating calculations with software program STOUR, engineers can quickly identify optimal routes for spacecraft travel.

Purdue researcher solves sorghum mystery

Researchers have found that a tough protein wall in sorghum seeds slows down digestion, but Hamaker's work identified an uncommon variety with improved digestibility. The study could lead to more nutritious sorghum crops for human consumption and animal feed.

SourcePurdue University·JournalProceedings of the National Academy of Sciences·DateJul 19, 2000

Understanding of floral scents blossoms in Purdue laboratory

Researchers at Purdue University have discovered that snapdragons release more scent during the day when bees are active, and that this relationship between the flower and bee is crucial for pollination. The study also found that a genetic regulatory mechanism controls the production of floral scents in different plant species.

SourcePurdue University·JournalThe Plant Cell·DateJul 9, 2000

New chemical instrument uses advanced missile technology

The new system can analyze many samples within seconds, nearly 5,000 times faster than other technology in screening samples of catalysts that react with liquids. It will speed up the analysis of combinatorial chemistry samples and reveal molecular mechanisms involved in gas-solid catalysis.

SourcePurdue University·JournalJournal of Combinatorial Chemistry·DateMay 1, 2000