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Tag: "materials" at biology news

War on terror meets war on cancer

... air. Later, stable isotopes in sediments or other materials were used to learn details about prehistoric environments, such as changing temperatures over time. In recent years, Ehleringer pioneered the use of stable isotopes to study what has been dubbed "the ecology of terrorism." He has helped the Central ...

Chernobyl: The true scale of the accident

...has increased and will only decline as radioactive materials migrate downward into the soil and slowly decay. The high transfer of radiocaesium from lichen to reindeer meat to humans was seen in the Artic and sub-Arctic areas, with high contamination of reindeer meat in Finland, Norway, Russia, and Sweden. The...

Researchers learn how blood vessel cells cope with their pressure-packed job

...nfiguration. Rubber bands and most other flexible materials react to stretching by forming stress wrinkles parallel to the direction in which they are being pulled. However, the healthy bovine aorta endothelial cells did not behave that way in tests performed in the laboratory of Shu Chien, a coauthor of the ...

Researcher uncovers details of how cancer spreads

...sm called endocytosis -- which cells employ to let materials enter through the cell membrane. The researchers used a protein called v-Src derived from an oncogenic virus, which has the ability to transform a normal cell into one with many features resembling those found in cancer cells. While this virus has n...

UT Southwestern researchers develop screening test for cells that activate immune system

...lar level looking for antigens - foreign cells and materials invading the body - and for molecular signatures of tissue damage or infection. "Their primary job is to present antigens to the immune system so that you develop protective immunity for infection and cancer," said Dr. Takashima. The DC biosensor s...

Hand sanitizer gel works

...assigned to receive hand sanitizer and educational materials on hand hygiene. They were told to place bottles o...ining families, serving as controls, received only materials about nutrition, and were asked not to use hand sanitizer. The two groups reported similar rates of ...

Researchers find Amchitka seafood safe for now

... studies present no evidence that the nuclear test materials have entered the seas there. Although its work was...sland since the presence of long-lived radioactive materials will require long-term attention to a site that may eventually pose potential risk to future generat...

K-State professors discover enzyme responsible for creation of a beetle's hard shell

..., but also help create similar strong, lightweight materials for use in aircraft and armor. After a beetle fir...exoskeleton could be developed to make lightweight materials for aircraft and military armor, Kramer said. "I sometimes speculate that we might help K-State coa...

Modifications render carbon nanotubes nontoxic

... under consideration for dozens of applications in materials science, electronics and medical imaging," said CB...ed in parts per million or parts per billion -- of materials that lead to the death of 50 percent of the cells in a culture within 48 hours. In the current stud...

The right drug at the right time

...fluid Dowtherm A, for example, reduces the overall materials cost of making quantum dots by about 80 percent. Quantum dots are tiny crystals of semiconducting materials - cadmium selenide or CdSe is the most popular flavor - that measure just a few nanometers in diamet...

Method slashes quantum dot costs by 80 percent

...fluid Dowtherm A, for example, reduces the overall materials cost of making quantum dots by about 80 percent. Quantum dots are tiny crystals of semiconducting materials - cadmium selenide or CdSe is the most popular flavor - that measure just a few nanometers in diamet...

Scientists and engineers apply nature's design to human problems

...the potential to greatly enhance new technologies, materials and processes. "Biology can be a powerful guide t...ons for more efficient manufacturing and design of materials with new capabilities, for example. These are things the biological world has solved, and if you stu...

Virginia Tech football player uses prototype cast

...rginia Tech engineers. Brian Love, a professor of materials science and engineering in the College of Engineer...de from the same matrix as previously used bracing materials in medicine, the biomedical community was already familiar with the composite's characteristics. T...

Researchers find ways to turn manure into power

...are lighting a fire under research to turn biomass materials such as manure into energy. Texas Senate Bill 20, signed this week by Gov. Rick Perry, compliments research underway to determine how and where biomass can be used. The new law requires more renewable energy to be developed and used in the next 10 y...

NHGRI expands effort to revolutionize sequencing technologies

...emistry. This method allows for smaller volumes of materials to be used as well as the decoupling of synthesis and detection steps, resulting in more efficient automation. M. Reza Ghadiri, Ph.D., The Scripps Research Institute, La Jolla, Calif. and Hagan P. Bayley, Ph.D., Oxford University, UK. $4.2 million (...

Making plant cells work like miniature factories

...oduce biomass for energy production, chemicals and materials for industry or pharmaceuticals, and untold thousa...e can understand metabolism, then ideally, all the materials a plant produces can be controlled." The project, "Mass Spectrometric Imaging of Plant Metabolites,...

'Cookbook recipes' would cure disease with nontoxic DNA delivery systems

...ot of intuition," said Gerard Wong, a professor of materials science and engineering, physics, and bioengineering at the University of Illinois at Urbana-Champaign, and corresponding author of the paper. "By understanding some of the physics, we now have recipes for assembling delivery systems with different ...

Nanotubes inspire new technique for healing broken bones

...l for the production of lightweight, high-strength materials such as bone," says Robert Haddon, Ph.D., a chemis...f chicken wire. They are among the strongest known materials in the world. Bone tissue is a natural composite of collagen fibers and hydroxyapatite crystals. Ha...

Naturally occurring asbestos linked to lung cancer

...o use of naturally occurring asbestos in household materials such as whitewash. The UC Davis study suggests naturally occurring asbestos also causes mesothelioma in developed countries, through incidental, non-occupational exposures. California has required statewide cancer reporting since 1985 and establishe...

Bleach found to neutralize mold allergens

...he common fungus Aspergillus fumigatus on building materials for two weeks, and then sprayed some with a dilute...aboratory conditions, fungal-contaminated building materials treated with dilute bleach or Tilex Mold & Mildew Remover?may have significantly reduced allergi...

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