Researchers at Virginia Tech are developing 'bursting' polymer molecules that can change their architecture in response to stimuli, offering potential solutions for drug delivery and novel wound dressings. The breakthroughs are driven by responsive groups on the ends of the polymer chain.
The American Chemical Society is examining scientific connections between the US and Cuba, with a focus on fostering Cuban-American research partnerships. Cubans and scientists with Cuban connections will discuss topics such as chemical education and nanotechnology.
Researchers investigate subtle cognitive changes and brain asymmetry as potential precursors to Alzheimer's Disease, using neuropsychological tests to track changes in cognition over time. The studies aim to identify individuals at high risk of developing the disease, enabling earlier intervention and minimizing brain damage.
SourceAmerican Psychological Association·JournalNeuropsychology·DateApr 7, 2002
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Computers can now simulate complex molecular reactions with larger molecule sizes, expanding the capabilities of quantum chemistry. Researchers aim to reduce computation time without losing accuracy.
A study found that participants with Alzheimer's disease showed greater discrepancies in cognitive skills, particularly in visual and verbal tests. The research suggests that non-invasive cognitive tests could detect early signs of the disease.
SourceUniversity of California - San Diego·JournalNeuropsychology·DateApr 7, 2002
Researchers Kun Yan Zhu and Jian-Rong Gao found that greenbugs with resistance develop a higher rate of the acetylcholinesterase enzyme, requiring more insecticide to kill. This breakthrough may lead to better pest control methods by monitoring resistance in individual fields.
A University of Pittsburgh Medical Center study reveals that the protein cdc42 plays a crucial role in suppressing dendritic cell activity in cancer. The findings provide a new direction for therapeutic molecular immunopathology and may lead to the development of highly efficient vaccines for cancer therapy.
SourceUniversity of Pittsburgh Medical Center·DateApr 7, 2002
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Researchers at Virginia Tech have successfully synthesized a higher molecular weight polymer, which promises to create stronger materials. The new end groups and synthesis of the monomer could lead to improved mechanical properties, including increased elongation and stretchiness.
Scientists have measured the constants describing self-assembly in the creation of a supramolecular assembly that can potentially important to the processing of many novel materials. Pseudorotaxanes are chemical compounds containing non-covalent linkages, and researchers have explored their possibilities and applications.
SourceVirginia Tech·JournalJournal of the American Chemical Society·DateApr 7, 2002
Researchers discovered the brain region responsible for pattern perception, which helps humans recognize danger but also leads to superstitions. The prefrontal cortex processes information about the environment, preparing the organism to change behavior in response to patterns.
SourceDuke University·JournalNature Neuroscience·DateApr 7, 2002