Tag Archives: radioactive

How Radioactive is Our Ocean?

Citizen science campaign aims to collect ocean samples and fund radiation analysis

Woods Hole Oceanographic Institution (WHOI) marine chemist Ken Buesseler began sampling and analyzing seawater surrounding the Fukushima Dai-ichi nuclear power plant three months after the 2011 disaster. Today, he launched a crowd sourcing campaign and citizen science website to collect and analyze seawater along the West Coast of North America as the radioactive plume travels 5,000 miles across the Pacific Ocean.

“Whether you agree with predictions that levels of radiation along the Pacific Coast of North America will be too low to be of human health concern or to impact fisheries and marine life, we can all agree that radiation should be monitored, and we are asking for your help to make that happen,” says Ken Buesseler, WHOI senior scientist and director of the Center for Marine and Environmental Radioactivity (CMER). (more…)

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Driver’s ed for Robots

UD joins research team teaching robots to respond in disaster emergencies

How do you teach a robot to get into vehicle and drive it? Three University of Delaware professors plan to figure it out by the end of next year.

Christopher Rasmussen, Ioannis Poulakakis and Herbert Tanner are part of a team competing in a new U.S. Defense Advanced Research Projects Agency (DARPA) Challenge. The team, with members from 10 schools, led by Drexel University, is one of several groups worldwide working to advance robotics technology for disaster relief. (more…)

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Gold Nanoparticle Prostate Cancer Treatment Found Safe in Dogs, MU Study Shows

New treatment may have fewer side effects than traditional cancer therapy

COLUMBIA, Mo. ­— Currently, large doses of chemotherapy are required when treating certain forms of cancer, resulting in toxic side effects. The chemicals enter the body and work to destroy or shrink the tumor, but also harm vital organs and drastically affect bodily functions. Now, scientists at the University of Missouri have proven that a new form of prostate cancer treatment that uses radioactive gold nanoparticles, and was developed at MU, is safe to use in dogs. Sandra Axiak-Bechtel, an assistant professor in oncology at the MU College of Veterinary Medicine, says that this is a big step for gold nanoparticle research.

“Proving that gold nanoparticles are safe to use in the treatment of prostate cancer in dogs is a big step toward gaining approval for clinical trials in men,” Axiak-Bechtel said. “Dogs develop prostate cancer naturally in a very similar way as humans, so the gold nanoparticle treatment has a great chance to translate well to human patients.” (more…)

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Gold Nanoparticles Could Treat Prostate Cancer With Fewer Side Effects than Chemotherapy, MU Researchers Find

In new study published in PNAS, scientists found that nanoparticles, produced from chemicals in tea, reduced tumors by 80 percent.

COLUMBIA, Mo. – Currently, large doses of chemotherapy are required when treating certain forms of cancer, resulting in toxic side effects. The chemicals enter the body and work to destroy or shrink the tumor, but also harm vital organs and drastically affect bodily functions. Now, University of Missouri scientists have found a more efficient way of targeting prostate tumors by using gold nanoparticles and a compound found in tea leaves. This new treatment would require doses that are thousands of times smaller than chemotherapy and do not travel through the body inflicting damage to healthy areas. The study is being published in the Proceedings of the National Academy of Science. (more…)

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Arctic Rocks Offer New Glimpse of Primitive Earth

Scientists have discovered a new window into the Earth’s violent past. Geochemical evidence from volcanic rocks collected on Baffin Island in the Canadian Arctic suggests that beneath it lies a region of the Earth’s mantle that has largely escaped the billions of years of melting and geological churning that has affected the rest of the planet. Researchers believe the discovery offers clues to the early chemical evolution of the Earth.

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