UD professor’s book examines ‘Black Politics Today’
The civil rights legislation of the 1960s, which sought to empower and strengthen the black community, now indirectly poses a threat to the group’s collective social, political and economic development, according to Theodore Davis, University of Delaware associate professor. (more…)
*Researchers have created a living 3-D model of a brain tumor and its surrounding blood vessels. In experiments, the scientists report that iron-oxide nanoparticles carrying the agent tumstatin were taken by blood vessels, meaning they should block blood vessel growth. The living-tissue model could be used to test the effectiveness of nanoparticles in fighting other diseases. Results appear in Theranostics.*
PROVIDENCE, R.I. [Brown University] — Brown University scientists have created the first three-dimensional living tissue model, complete with surrounding blood vessels, to analyze the effectiveness of therapeutics to combat brain tumors. The 3-D model gives medical researchers more and better information than Petri dish tissue cultures.
The researchers created a glioma, or brain tumor, and the network of blood vessels that surrounds it. In a series of experiments, the team showed that iron-oxide nanoparticles ferrying the chemical tumstatin penetrated the blood vessels that sustain the tumor with oxygen and nutrients. The iron-oxide nanoparticles are important, because they are readily taken up by endothelial cells and can be tracked by magnetic resonance imaging. (more…)
*Long-Form Video Content on the Rise, Reaching 6 Minutes on Average in January*
RESTON, VA, February 20, 2012 – comScore, Inc., a leader in measuring the digital world, today released data from the 
comScore Video Metrix service showing that 181 million U.S. Internet users watched nearly 40 billion videos of online video content in January.
Top 10 Video Content Properties by Unique Viewers
Google Sites, driven primarily by video viewing at YouTube.com, ranked as the top online video content property in January with 152 million unique viewers, followed by VEVO with 51.5 million, Yahoo! Sites with 49.2 million, Viacom Digital with 48.1 million and Facebook.com with 45.1 million. Nearly 40 billion videos views occurred during the month, with Google Sites generating the highest number at 18.6 billion, followed by Hulu with 877 million and VEVO with 717 million. The average viewer watched 22.6 hours of online video content, with Google Sites (7.5 hours) and Hulu (3.2 hours) demonstrating the highest average engagement among the top ten properties. (more…)
COLUMBUS, Ohio — According to a new study, smoking causes the body to turn against its own helpful bacteria, leaving smokers more vulnerable to disease.
Despite the daily disturbance of brushing and flossing, the mouth of a healthy person contains a stable ecosystem of healthy bacteria. New research shows that the mouth of a smoker is a much more chaotic, diverse ecosystem—and is much more susceptible to invasion by harmful bacteria. (more…)
VANCOUVER, British Columbia — Studying the origin of life at its building blocks offers a unique perspective on evolution, says a researcher at Michigan State University.
Robert Root-Bernstein, MSU physiology professor, will answer the question of why a physiologist studies the origin of life at the annual meeting of the American Association for the Advancement of Science Feb. 16-20 in Vancouver, British Columbia. (more…)
COLLEGE PARK, Md. – Unexpected new findings by a University of Maryland team of geochemists show that some portions of the Earth’s mantle (the rocky layer between Earth’s metallic core and crust) formed when the planet was much smaller than it is now, and that some of this early-formed mantle survived Earth’s turbulent formation, including a collision with another planet-sized body that many scientists believe led to the creation of the Moon. (more…)
Breast cancer stem cells, thought to be the sole source of tumor recurrence, are known to be resistant to radiation therapy and don’t respond well to chemotherapy.
Now, researchers with the UCLA Department of Radiation Oncology at UCLA’s Jonsson Comprehensive Cancer Center report for the first time that radiation treatment, despite killing half of all tumor cells during every treatment, transforms other cancer cells into treatment-resistant breast cancer stem cells. (more…)
Fieldwork in Peru’s Andes Mountains is demanding, especially when it involves hauling heavy equipment to remote sites that are accessible only by traversing the region’s rugged terrain. (more…)
