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Tag: "mixture" at biology news

Ohio University researchers discover evolutionary oddity in flamingos

...e, the researchers injected a colored barium/latex mixture into the blood vessels of a bird that had died and was donated by the Brevard Zoo in Florida. A 3-D view of the bird's head was created using a new computed tomography (CT) scanning technique developed by the Ohio University team that highlights bloo...

Tamed 11,400 years ago, figs were likely first domesticated crop

...r-Yosef says. "Apparently, this kind of economy, a mixture of cultivation of wild plants, planting fig trees and gathering other plant foods in nature, was widely practiced during the second half of the 12th millennium before present throughout the Levant, the western wing of the Fertile Crescent." ...

Producing bio-ethanol from agricultural waste a step closer

... Until recently, the problem was that the complex mixture of sugars that makes up these leftover materials could not be efficiently converted into ethanol by the baker's yeast. Delft University of Technology, however, has recently devised a solution for this, which is achieved by genetically modifying the b...

Birds going extinct faster due to human activities

...f certain molecules in the extracellular matrix, a mixture that surrounds developing brain cells. Transiently appearing and disappearing, these molecules apparently cordon the brain into different regions. If molecules from the matrix activate genes in stem cells responsible for generating neural componen...

Medium is the message for stem cells in search of identities

...f certain molecules in the extracellular matrix, a mixture that surrounds developing brain cells. Transiently appearing and disappearing, these molecules apparently cordon the brain into different regions. If molecules from the matrix activate genes in stem cells responsible for generating neural componen...

Biological motors sort molecules one by one on a chip

.... To demonstrate this, the researchers allowed a mixture of green and red fluorescent microtubules to arrive at a Y-junction. By changing the direction of the electrical force, depending on the color of the microtubule, the Delft researchers were able to collect the green and red microtubules in different ...

A single sugar found responsible for an antibody's ability to treat inflammation

.... Intravenous immunoglobulin (IVIG) is a complex mixture of IgG antibodies made from human plasma that contains the pooled antibodies from thousands of people, and is only FDA-approved to treat a few assorted conditions; nonetheless, practitioners have used it off-label with varied success in patients with...

Gut microbes' partnership helps body extract energy from food, store it as fat

... individuals. "We are superorganisms containing a mixture of not just human cells but also bacterial cells and cells of another microscopic domain of life known as Archaea," says senior author Jeffrey Gordon, M.D., the Dr. Robert J. Glaser Distinguished University Professor. "As adults, the number of these ...

Small molecule interactions were central to the origin of life

...g the more plausible idea that life began within a mixture of simple organic molecules, multiplied through ca...e energy source, that helps convert an unorganized mixture into a organized, self-regulated metabolic network. "If we wish a more plausible origin of life, t...

Ultra low-dose estrogen shown safe for post-menopausal women

... .625 milligrams per day of conjugated estrogen ?a mixture of estrogen from several different sources ?in pill form. In contrast, the women studied by Yaffe and her associates received a daily dose of estradiol ?pure human estrogen ?that was over 44 times smaller and delivered through a skin patch. "The d...

Researchers show how brain decodes complex smells

...s in each odor with gas chromatography. "A complex mixture like urine has at least a hundred separate compounds in it," Lin said. They analyzed scents as diverse as peanut butter, coffee and fresh bobcat urine shipped to the laboratory on dry ice. The researchers then exposed the mice to the original odor a...

New strategy rapidly identifies cancer targets

...leukemia cells and chemically digested them into a mixture of protein snippets called peptides. Next, they extracted all of the peptides carrying extra phosphates and sent them through a mass spectrometer, which precisely measured the weight of each peptide. Sophisticated software then sifted through a massi...

'Micro-boxes' of water used to study single molecules

...e NIST team creates the boxes by briefly shaking a mixture of water, the biomolecules to be studied, and a fluorocarbon medium. Water droplets form in the oily fluorocarbon and naturally encapsulate one to several biomolecules. The researchers then watch through a microscope while using infrared lasers as "o...

Researchers develop flood-tolerant California rice

...she said, "given that many flood-prone areas are a mixture of fresh and salt water." Besides Bailey-Serres, Takeshi Fukao of UCR; and Kenong Xu and Pamela C. Ronald of UC Davis collaborated on the study, which was funded by grants from the United States Department of Agriculture and the United States Agenc...

Finding a better way to make biodiesel

... a catalyst. Getting biodiesel out of the chemical mixture requires acid neutralization, water washes and separation steps. It's a tedious process that dissolves the catalysts so they can't be used again, Lin said. So Lin and his research team started looking for technologies that would create an easier, m...

Purdue creates new low-cost system to detect bacteria

...s food-borne pathogen for humans. "If you have a mixture of different listeria, you would like to know which is the one that can kill you," Rajwa said. "We took pictures of the scatter patterns from different listeria, and we were able to classify all of them accurately." The system also was able to accu...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

...night's application. The insecticide contained a mixture of pyrethrin, a natural pesticide found in a type of chrysanthemum, and piperonyl butoxide (PBO). On its own, PBO has a low level of toxicity, but it is a chemical synergist, which means it increases the toxicity of other chemicals such as pyrethrin ...

Avian flu modeled on supercomputer, explores vaccine and isolation options for thwarting a pandemic

...ons alone will not be enough to stop the spread; a mixture of many mitigation strategies is more likely to be effective than a few strictly enforced ones," said Kadau, also of Los Alamos' Theoretical Division. The model of disease transmission involves probabilities that any two people in a community will m...

Chocolate milk could be key to longer, healthier life

...one session the participants were asked to drink a mixture of protein and carbohydrate (e.g. sweetened milk) and after the other just carbohydrates. It is well known that consuming proteins and sugars after resistance training increases the synthesis of proteins used for force i.e. it builds muscles. Dr Mi...

Liquid crystals show promise in controlling embryonic stem cells

...rentiate in an uncontrolled manner, resulting in a mixture of cells of little medical use. Now, University of Wisconsin-Madison researchers at the NSF-funded Materials Research Science and Engineering Center (MRSEC) have shown that by straining mechanically the cells as they grow, it is possible to reduce ...

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