Add BrightSurf on Google Email

Science News Archive March 2011


Page 1 of 28

Identifying the origin of the fly

The study identifies three periods of rapid evolution in the fly family tree, with mosquito, March fly, and common house fly branches emerging around 220, 175, and 50 million years ago. This research provides a framework for future comparative work on species critical to society and science.

SourceCSIRO Australia·JournalProceedings of the National Academy of Sciences·DateMar 31, 2011

Closer look at cell membrane shows cholesterol 'keeping order'

Researchers at NIST and University of California, Irvine, developed a way to magnify cell membranes up to 1,000 times resolution, revealing the importance of cholesterol in maintaining membrane order. The findings suggest that cholesterol may have profound consequences for gatekeeper proteins, which interact constantly with the membrane.

Biomedical engineers develop computational model to better understand genomes

Researchers have developed a computational model to clearly identify significant genome variations, which will aid in understanding the impact of such variations on cell functions and treatment outcomes. The approach was tested using Pseudomonas aeruginosa, a bacterium responsible for hospital-acquired infections, and showed promising ...

SourcePLOS·JournalPLOS Computational Biology·DateMar 31, 2011

Understanding fathering

Researchers are exploring how fathers contribute to their children's cognitive development, emotional well-being, and social skills. Studies will examine the role of fathers in rural American communities, Israeli families, and low-income African American households, shedding light on the often-overlooked impact of fathering on childhood

Expanding the degrees of surface freezing

Scientists have found that molecules in thin films remain frozen at a temperature where the bulk material is molten. This phenomenon, known as surface freezing, occurs at the buried interface between bulk liquids and solid surfaces, with temperatures ranging from 10 to 30 degrees Celsius above the melting point of the bulk material.

SourceDOE/Brookhaven National Laboratory·JournalPhysical Review Letters·DateMar 31, 2011

TGen and Scottsdale Healthcare researchers discover microRNA role in brain metastasis

A study published by Scottsdale Healthcare and TGen identified microRNA-328 as a biomarker that can predict lung cancer patients' risk of developing brain metastasis. The study found that over-expression of microRNA-328 resulted in increased cancer cell migration, suggesting its involvement in 'brain-seeking' metastatic potential.

SourceThe Translational Genomics Research Institute·JournalInternational Journal of Cancer·DateMar 31, 2011

Immune therapy can control fertility in mammals

Researchers have developed an immune therapy technique that can suppress fertility hormones in females and males, potentially preventing pregnancy. The treatment could be used on dogs, cats, and other mammals, as well as humans with hormonal imbalances or conditions such as androgen excess syndromes.

SourceNewYork-Presbyterian·JournalGenetic Engineering & Biotechnology News·DateMar 31, 2011

Results show benefits in using acute kidney injury criteria in the diagnosis of cirrhosis

A recent study found that using acute kidney injury (AKIN) criteria in hospitalized cirrhotic patients can predict outcomes and improve diagnosis. The AKIN criteria is more sensitive than current definitions, considering a ≥50% increase in serum creatinine within 48 hours as renal failure. This may lead to better management of health s...

Getting a grasp on memory

A team of researchers found that half of all learned insights are consolidated in our memories, and the amygdala plays a crucial role in this process. The study used camouflage images to induce sudden insight, and participants' ability to identify the images was predicted by amygdala activity.

SourceWeizmann Institute of Science·JournalScience·DateMar 31, 2011

Intelligent design: Engineered protein fragment blocks the AIDS virus from entering cells

Scientists have engineered a protein fragment that prevents the AIDS virus from entering cells, offering a potential breakthrough in treating and preventing HIV/AIDS infection. The discovery is based on a naturally occurring protein called RANTES, which was modified to remove harmful effects while maintaining its therapeutic properties.

Ants and termites boost dryland wheat yields

Studies by CSIRO and the University of Sydney found that ants and termites can increase wheat crop yields by up to 36% under low tillage conditions. The insects improve soil nitrogen and water infiltration, reducing runoff and evaporation. This breakthrough has significant implications for dryland agriculture in hot and dry climates.

SourceCSIRO Australia·JournalNature Communications·DateMar 31, 2011

It's good to have a shady side: sun and shade leaves play different roles in tree canopies

New research reveals that tree leaves in different canopy positions respond to varying light conditions by changing shape and physiology. This adaptation allows trees to cope with stress and use resources more efficiently, with outer canopy leaves influencing the inner canopy's ability to utilize diffuse solar radiation.

Repulsive smell could combat bed bugs

Researchers from Lund University and Mid Sweden University have identified a type of smell produced by bed bugs, known as alarm pheromones, which is repulsive to nymphs and potentially useful for controlling the pests. The study's findings suggest that the smells given off by adult and nymph bed bugs are surprisingly similar.

SourceLund University·JournalPLOS ONE·DateMar 31, 2011

Biological molecules select their spin

Research by Prof. Ron Naaman and colleagues reveals that biological molecules, such as DNA, can discern between quantum states of spin, a phenomenon previously thought irrelevant to their function due to their size and temperature. This chiral property enables them to selectively interact with electrons carrying specific spins.

SourceWeizmann Institute of Science·JournalScience·DateMar 31, 2011