Add BrightSurf on Google Email

Science News Archive May 2010 - Page 2


Page 2 of 26

Student uses pedal power to create novel machine

A student at the University of Sheffield designed a mobile bicycle-powered water pump, called bicibomba movil, to improve irrigation and water distribution for rural residents in Guatemala. The machine can achieve a flow rate of 40 liters per minute on flat ground and has been produced in regular production since its creation.

UBC researcher decodes Rembrandt's 'magic'

A UBC researcher has discovered what makes Rembrandt's portraits so captivating by recreating four of the artist's most famous works using computer-rendering programs. The study found that viewers fixated on specific areas of the face, such as the eyes, and preferred portraits with 'eye guiding narrative' techniques.

SourceUniversity of British Columbia·JournalLeonardo·DateMay 28, 2010

The deep voice of alpha male

A new study published in Springer's journal Behavioral Ecology and Sociobiology found that men perceive vocal masculinity as a strong indicator of dominance, but it does not influence their attentiveness to rivals' voices. The researchers also discovered that testosterone levels are linked to dominance ratings.

SourceSpringer·JournalBehavioral Ecology and Sociobiology·DateMay 28, 2010

A Dicty mystery solved

Rice researchers found that starving cells in slime mold have an advantage, pushing those that eat into selfless sacrifice. The study reveals a surprising strategy for survival and reproduction in single-cell organisms.

SourceRice University·JournalBiology Letters·DateMay 27, 2010

Pitt researchers discover gene mutation linked to lymphatic dysfunction

Researchers at the University of Pittsburgh have discovered a genetic mutation linked to lymphatic dysfunction, which could lead to a first-ever target for drug therapy for lymphedema. The study identified mutations in the GJC2 gene that impair cell signaling, leading to fluid accumulation and tissue swelling.

SourceUniversity of Pittsburgh Schools of the Health Sciences·JournalAmerican Journal of Human Genetics·DateMay 27, 2010

Flu doesn't die out, it hides out

A genetic analysis reveals that flu strains in the US don't disappear at the end of winter, but instead migrate to South America and other parts of the world. This knowledge has implications for public health efforts, including antiviral use and vaccination programs.

SourceUniversity of Michigan·JournalPLOS Pathogens·DateMay 27, 2010

Snails on methamphetamine

Researchers discovered that methamphetamine enhances memory in pond snails, allowing them to recall learned behaviors despite being immersed in de-oxygenated water. This finding may provide insights into the mechanisms of human addiction and how memories are formed.

SourceThe Company of Biologists·JournalJournal of Experimental Biology·DateMay 27, 2010

Optical Legos: Building nanoshell structures

Researchers have developed a way to use Rice University's light-activated nanoshells as building blocks for complex structures that can trap, store and bend light. These materials have unique optical properties, making them suitable for applications such as ultrasensitive biological and chemical sensors.

SourceRice University·JournalScience·DateMay 27, 2010

Electric ash found in Eyjafjallajokull's plume, say UK researchers

UK researchers have discovered electrically charged ash in the plume of Iceland's Eyjafjallajokull volcano. The finding contradicts models and adds a new dimension to understanding volcanic plumes' impact on air travel. Detailed measurements reveal self-renewing charge within the plume, which affects particle behavior and growth.

SourceIOP Publishing·JournalEnvironmental Research Letters·DateMay 27, 2010

To double spud production, just add a little spit

Scientists at Cornell University found that compounds in Guatemalan potato moth larvae saliva increase photosynthesis and starch production in commercial potato plants, resulting in bigger tubers. Yield increases were observed when 10-50% of potatoes were infested, with marketable yields doubling or tripling.

SourceCornell University·JournalEcological Applications·DateMay 27, 2010

Farmers' beliefs on a higher plain

A new study reveals that abandoning traditional beliefs in local Islamic Saints is linked to agricultural expansion and the introduction of new sheep breeds, affecting agro-pastoral resource management. The research highlights the importance of individual religious beliefs in shaping environmental practices.

SourceSpringer·JournalHuman Ecology·DateMay 27, 2010

Out of the woods for 'Ardi'

Scientists argue that Ardipithecus ramidus, a human ancestor, lived in tree or bush savannas with 5-25% tree cover, not dense woodlands. The claim challenges the savanna hypothesis, which suggests that the expansion of savannas prompted the evolution of bipedalism.

SourceUniversity of Utah·JournalScience·DateMay 27, 2010

Ultrasound could boost tissue implant success

Researchers discovered that low-intensity ultrasound therapy can improve the survival and function of tissue grafts after surgery. The treatment increased cellular activity, reduced waste buildup, and enhanced molecular motion, leading to better outcomes for patients undergoing various surgical procedures.

SourceSAGE Publications UK·JournalJournal of Tissue Engineering·DateMay 27, 2010

NDE methods for evaluating ancient coins could be worth their weight in gold

Researchers used nondestructive evaluation techniques to analyze ancient coins minted by King Agrippa I and II. The study revealed that the copper used in the coins likely came from mines previously thought not to have been opened until a century later, suggesting a closer relationship between the Romans and the region.