Articles tagged with Radioactivity
A recent investigation found that coral species have recovered from the atomic blast, with diverse and abundant marine life observed. However, some species are locally extinct due to the bomb's effects on water temperatures and nutrient levels.
Scientists at Argonne National Laboratory have developed a compound that captures and separates radioactive ions, including strontium 90, from inert materials. The synthetic sulfide-based compound can strip away 99% of the radioactive element within a few hours.
A study of 61 patients with follicular non-Hodgkin lymphoma found that radioimmunotherapy with yttrium-90 ibritumombab tiuxetan was well-tolerated and effective, achieving complete response in 55 patients. The treatment also showed improved progression-free survival and overall survival rates.
Researchers found a significant increase in follicular adenoma risk among persons exposed to radioactive fallout from Chernobyl as children and adolescents. The study suggests exposure to radiation at young ages increases the risk, with women having a notably higher risk compared to men.
Researchers found missing radioactive signals in Tibetan ice cores, indicating the Himalayan glacier has shrunk at least since the A-bomb test half a century ago. The loss of freshwater from glaciers could impact nearly half a billion people in India.
Researchers found that juvenile mice responded more damagingly to low-dose external radiation than adult mice, indicating potential long-term harm. The study aims to develop biomarkers for treating radiation poisoning and predicting health risks in mass casualty events.
Brookhaven National Laboratory has developed improved radiation detectors that can be used at room temperature, enhancing detection of X-rays and gamma rays. The new sensors use shielding methods to focus electrons toward the anode, improving energy resolution and efficiency.
Researchers at TRIUMF are developing custom radioisotopes to target cancer cells more efficiently. They aim to create tailor-made treatment programs for each patient, reducing radiation doses and treatment sessions.
A $1 million grant will fund a five-year study using bioremediation to promote bacterial growth in soil subsurface, scrubbing radioactive metal. This method has the potential to clean up an estimated 1.7 trillion gallons of contaminated water and 40 million cubic meters of contaminated soil nationwide.
A team from the University of Cambridge and the Pacific Northwest National Laboratory reported that minerals intended to entrap nuclear waste may break down within 1,400 years due to radiation. The study used NMR to show that plutonium incorporation into mineral zircon rapidly degrades its crystal structure.
Researchers propose that microorganisms can thrive in the Deep Biosphere due to natural radioactivity, offering an alternative energy source. This process, radiolysis, creates hydrogen and oxygen, providing sufficient energy for life forms to survive without surface processes.
Government laboratories can quickly analyze radioactive samples but with variable accuracy and quality control procedures. The NIST tests found that measurement capability is generally accurate within 30% of the expected value.
The National Institute of Allergy and Infectious Diseases (NIAID) has awarded a $998,325 grant to Berkeley Lab's Kenneth Raymond to develop new agents for large-scale radiological treatment. The goal is to test these agents with animals and proceed to clinical trials within 18 months.
The NIAID has awarded five grants totaling up to $4 million to fund the development of products that eliminate radioactive materials from the human body. The goal is to accelerate the development of previously identified compounds into effective products for licensing in the strategic national stockpile.
Researchers investigate chitosan, a natural and safe biomaterial found in crab and prawn exoskeletons, as a potential chelator to reduce radiation dose. Chitosan's ability to bind and remove radionuclides like cobalt, strontium, and radium is being tested in laboratory rats.
Researchers have developed a new approach to treating gliomas, deadly brain tumors, by delivering radioactive iodine using a man-made version of scorpion venom as a carrier. The treatment targets glioma cells without affecting neighboring tissue or body organs and has shown promise in Phase I clinical trials.
A study published in the Journal of the National Cancer Institute found that exposure to radioactive iodine after Chornobyl increases the risk of thyroid cancer in children and adolescents. Researchers estimate that 75% of thyroid cancer cases could have been avoided without radiation, highlighting a substantial contribution of radioac...
A study found that exposure to radioactive iodine after the Chornobyl accident significantly increases the risk of thyroid cancer in children and adolescents. The researchers estimate that 75% of these cases could have been avoided without radiation exposure.
Researchers have developed a radioactive version of scorpion venom that targets and kills glioma cells, offering a promising new treatment for high-grade brain cancer. The therapy involves injecting the compound into patients, which releases radiation to kill the tumor cells.
Researchers have detected gamma rays from radioactive aluminium (26Al) originating from the central regions of the Galaxy, indicating an ongoing process of new atomic nucleus production. The estimated total amount of radioactive 26Al is equivalent to three solar masses, corresponding to a galactic rate of supernovae every 50 years.
A multi-institutional effort aims to develop responses to 'dirty bombs' and other radioactive threats. The Biodesign Institute and TGen will create biodosimetry devices and diagnostic systems to rapidly analyze radiation exposure levels.
The KamLAND experiment detects geoneutrinos produced in the Earth's interior through uranium and thorium decay. This discovery provides an assay of the planet's total radioactivity, shedding light on terrestrial heat sources.
Recent tests by the National Institute of Standards and Technology (NIST) found that portable radiation detectors perform well enough to meet new consensus standards, but produce inaccurate readings for low-energy X-rays. The results highlight the need for manufacturers to better design and characterize their instruments.
Researchers used nuclear imaging to study how mice absorb radioactive iodine, finding that a dose five times higher than the FDA-recommended dosage is needed for effective protection. The team discovered that using this higher dose can improve image quality and reduce false-positive readings.
Researchers found that bacteria's worst enemy in nuclear waste sites may be toxic metals, contradicting conventional wisdom. Actinides are less toxic than other metals, suggesting bioremediation using naturally occurring bacteria can still be effective.
A Swedish study has found a statistically significant correlation between the degree of Chernobyl fallout and an observed rise in cancer cases. The study monitored over 1,143,000 individuals for cancer development after being exposed to low levels of radioactive cesium-137.
Scientists have discovered that radioactive potassium can form an alloy with iron at high pressures and temperatures, potentially providing a significant heat source in the Earth's core. This finding could explain the missing potassium in the Earth's crust and mantle, and may help to power convection in the core.
Brookhaven National Laboratory researchers have developed counterterror technologies to detect radioactive materials, chemical and biological agents, and explosives. These sensor technologies can be deployed at ports, bridges, tunnels, and transportation hubs to intercept dangerous materials before a terrorist attack.
A team of researchers has discovered that injecting radioactive glucose can selectively kill cancer cells without harming healthy tissues. The treatment exploits the fact that cancer cells use more glucose than normal tissue, allowing for targeted delivery of radioactivity.
A recent study evaluated eZ-Scope's performance in identifying radioactive nodes during sentinel node biopsy. The results showed that eZ-Scope allowed for more accurate identification of nodes in less time.
The new center will conduct basic nuclear science research and partner with the Oak Ridge National Laboratory to acquire specific data for the DOE's scientific and engineering effort to maintain the nation's nuclear weapons. The partnership aims to engage faculty, postdoctoral researchers, and students in nuclear science research.
Researchers found that radioactive elements like potassium could supply enough heat to maintain the magnetic field, contradicting previous studies. The discovery helps explain Earth's long-lasting magnetic field and may shed light on the planet's core composition.
Researchers present findings on heart disease in women, including a study linking reduced kidney function to coronary artery disease. They also showcase an innovative new-generation stent that overcomes design limitations and allows for tailored drug delivery.
Experts will address common misconceptions about radiation and provide guidance on planning and preparation for terrorist acts involving radioactive materials. The seminar aims to educate nuclear medicine professionals and alleviate fears among non-nuclear medical staff.
A study by Brookhaven National Laboratory found that individual variation in dopamine release affects Ritalin's efficacy in treating attention/hyperactivity disorder. The study suggests that patients with low dopamine cell activity may not respond to the drug, even if it blocks dopamine transporters.
Scientists have discovered gold in an ancient star located 2,500 light years from Earth, providing significant insights into the formation of elements and the age of the Milky Way galaxy. The discovery was made using the Hubble Space Telescope and Keck Telescope, revealing the presence of other elements including thorium and uranium.
A new extraction process, known as Universal Extractant (UNEX), has been developed to remove multiple radioactive elements from high-level nuclear waste in a single step. This process reduces the volume of waste by at least twentyfold, making it cheaper and safer to store.
Chemical oceanographers at the University of Rhode Island used naturally occurring radium to estimate ground water input to coastal systems. The study found that ground water was a significant source of radium in Rhode Island salt ponds.
INEEL researchers successfully cleaned over 69% of plutonium and americium from spiked, local soil using supercritical fluid extraction with carbon dioxide. The method is nondestructive, environmentally friendly, and suitable for cleaning up plutonium-contaminated soil at DOE sites.
Physicists at Texas A&M University and the University of Texas at Austin are working on more accurate PET scanners, improving detection of tumors and other abnormalities in human organs. The new design enhances image quality and sharpness by detecting gamma rays' radial positions.
Researchers at UC Davis have found that genes in one part of a plant can override the genetic program in a distant part, changing how it grows. They also developed a new method to permanently bind radioactivity to antibodies to deliver cancer treatment.
A study of 31 prostate cancer patients found that quality of life returns to normal within a year following brachytherapy, with urinary symptoms disappearing. The treatment was compared to other options like removal of the prostate or standard radiation therapy, which carry higher risks of decreased sexual function and bowel problems.