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Computer simulation and lab synthesis sift through vast universe of possible molecules for the best

A team of researchers at Duke University has developed a computer-assisted method to find novel and superior materials by simulating and lab synthesizing vast universes of possible molecules. The technique, called LCAP, uses a universal property applicable to all molecules to identify optimal candidates for various applications.

SourceDuke University·JournalJournal of the American Chemical Society·DateMar 1, 2006

Fitness counteracts cognitive decline from hormone-replacement therapy

A new study reveals that high fitness levels can enhance the effects of short-term hormone treatment and offset declines associated with long-term use. Researchers analyzed brain tissue volume in 54 postmenopausal women and found a significant association between higher fitness levels and greater tissue volume in key areas.

UNC, Virginia Tech create digital library curriculum

The collaboration aims to develop and field-test individual lessons/modules that can be incorporated within courses or used to support entire courses. The project's deliverables will benefit digital library users with improved understanding of those who build the next generation of digital library systems.

Scientists discover how to flip a molecular switch

Researchers at Penn State and Rice University discover how to flip molecular switches by engineering their design and surrounding environment. They demonstrated that single-molecule switches can be tailored to respond in predictable ways, depending on the applied electric field direction.

SourcePenn State·JournalJournal of the American Chemical Society·DateNov 18, 2005

Breakthrough streamlines complex work assignments

Researchers at Princeton University developed an algorithm to optimally assign funding proposals to reviewers, resolving a long-standing issue for the National Science Foundation. The solution has broad applications in scheduling interns, deploying combat units, and assigning teachers to classes.

SourcePrinceton University·JournalIndustrial & Engineering Chemistry Research·DateNov 16, 2005

Bird calls may have meaning

A team of researchers found that black-capped chickadees respond differently to variations in bird calls, including changes in pitch, order, and rhythm. The birds' reactions suggest a functional aspect to their vocalizations, which may serve purposes such as attracting mates or warning others of potential threats.

SourceUniversity of Alberta·JournalBehavioural Processes·DateNov 9, 2005

How to braid nanoropes

Researchers at the Max Planck Institute of Colloids and Interfaces investigated the assembly of filament networks and bundles. They found that thermal motion prevents bundle formation unless crosslinker concentration exceeds a certain threshold value.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·DateOct 14, 2005

Presto! It's a semiconductor

Penn physicists develop artificial solids from nanoscale crystals, enabling controlled changes in electrical properties. Their findings promise the creation of functional nanocrystal-based devices and circuits with potential applications in electronics.

SourceUniversity of Pennsylvania·JournalPhysical Review Letters·DateOct 4, 2005

Researcher finds new use for botox

Dr Frederic Meunier's research explores how powerful nerve toxins like Botox selectively dissect basic nerve cell processes, leading to a novel angle in understanding neuronal diseases like Parkinson's and Alzheimer's. He has also discovered that Botox-intoxicated nerve cells can recover by emitting little sprouts.

SourceResearch Australia·JournalMolecular Biology of the Cell·DateSep 22, 2005