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Science News Archive July 2012


Page 26 of 26

Newly discovered dinosaur implies greater prevalence of feathers

A newly discovered dinosaur, Sciurumimus albersdoerferi, has provided evidence that all predatory dinosaurs had feathers, challenging the previous assumption that feathered dinosaurs were only related to birds. The fossil, which represents a juvenile specimen, shows a remarkable difference in diet between young and adult megalosaurs.

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Myelodysplastic syndromes (MDS) linked to abnormal stem cells

Researchers at Albert Einstein College of Medicine found that abnormal bone marrow stem cells drive the development of myelodysplastic syndromes (MDS), serious blood diseases. The study reveals genetic and epigenetic alterations in stem and progenitor cells, offering new hope for targeted therapies and improved cure rates.

Gene variant reduces cholesterol by 2 mechanisms

A gene variant in sortilin, responsible for higher protein expression in liver, has been found to reduce cholesterol levels. The study reveals two mechanisms: increased LDL degradation and decreased APOB secretion via lysosomal targeting.

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8 potential osteoarthritis susceptibility genes discovered

Researchers have identified eight new genetic variants associated with osteoarthritis, which could lead to future therapeutic intervention. The study suggests that inherited factors account for up to 60% of the risk, and the discovery provides insight into the genetics of arthritis.

Robust financial risk management through high performance computing

The HPCFinance network trains young people in computational finance and provides robust financial models to improve the financial strength of banks and households in Europe. Researchers develop and integrate more realistic models for volatility, interest rate and counterparty risk on efficient HPC platforms.

Journal of Renewable and Sustainable Energy highlights energy trends in China

Researchers in the Journal of Renewable and Sustainable Energy analyze China's emerging energy trends, finding increased bioenergy utilization but still dispersed biomass resources. A study on cooking fuel transition suggests universal access to modern fuels could be achieved in urban areas by 2030 for a relatively low cost.

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Beyond base pairs: Mapping the functional genome

Researchers at UC San Diego mapped nearly 300,000 mouse cis-regulatory elements, annotating 11% of the mouse genome and identifying conserved non-coding sequences shared with humans. The study provides insights into the functional organization of genes and their regulation in different tissues and cell types.

Study answers Medicare concerns about paying for CT colonography

A new study supports CT colonography as a screening tool for colon cancer in Medicare-aged patients, detecting 9.3% of abnormal growths of cells. The procedure also identified extracolonic findings in 2.9% of patients and may increase screening compliance rates by 15% if covered.

Sky & Telescope Pocket Sky Atlas, 2nd Edition

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Diving seabirds: Working hard and living long

Researchers found that diving birds stay fit and active until their 30s, with high metabolisms and frequent dives producing oxidative stress. These findings provide critical insights for human aging, a topic currently dominated by short-lived animal studies.

Why chronic pain is all in your head

A Northwestern University study found that chronic pain develops when two brain sections communicate excessively, increasing the likelihood of chronic pain. Researchers predicted with 85% accuracy which participants would develop chronic pain based on brain scan data.

Nikon Monarch 5 8x42 Binoculars

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New light shed on explosive solar activity

Researchers identify plasma upflows traveling at 20 km per second, suggesting 'impulsive heating' as possible cause. The study provides new insights into understanding extreme space storms and their impact on satellite communications and power grids.

Ants farm root aphid clones in subterranean rooms

Research reveals that ants farm subterranean aphids in clone groups, with over half of ant mounds containing a single species or clone. This unique farming method allows ants to actively manage diversity and abundance, maximizing honeydew yield and dietary protein.

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Secrets of lung cancer drug resistance revealed at UCSF

Researchers at UCSF have discovered that a human protein called AXL drives resistance to Tarceva, which suggests that blocking the protein may prevent resistance to the cancer drug. This discovery may lead to better treatments involving precision medicines that combine Tarceva with new drugs designed to block AXL.