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Tag: "separation" at biology news

MIT's molecular sieve advances protein research

...We can change the pore shape and engineer a better separation system." The sieve structure is based on work Han did earlier at Cornell University with large strands of DNA. The performance of the researchers' current one-dimensional sieves matches the state-of-the-art speed of one-dimensional gels, but Han sai...

Scientists design simple dipstick test for cocaine, other drugs

...imetric sensors that are based on the lateral flow separation of aptamer-linked nanostructures," said Yi Lu, a chemistry professor at the U. of I., and a researcher at the Beckman Institute for Advanced Science and Technology. "The new sensors offer a quick and convenient test that can be utilized by first re...

Sports cheats beware -- new test detects previously undetectable drug

...jected to a further two-stage test ?chromatography separation and mass spectrometric analysis. This lets scientists produce a chemical fingerprint of the molecule ?a fingerprint that uniquely identifies it. "If the drug testing authorities adopt this new test it will close a gap in the current drug testing s...

Researchers to develop active nanoscale surfaces for biological separations

...DNA, which could eventually lead to more efficient separation tools for genomics and proteomics. The researchers are taking their inspiration from nature, mimicking the very membranes that surround our cells to create platforms for separating biological molecules. These "lipid bilayers," which are made up of t...

Baby fish 'smell their way home'

... its sea life, Prof. Kingsford says. "This genetic separation between reefs may be what gives rise to so many different species in coral reef systems." The researchers were intrigued how tiny damsel and cardinal fish, born on one reef, managed to find their way back home to preserve such remarkable populatio...

Mitochondrial genes move to the nucleus -- but it's not for the sex

...t the mating system determines whether or not this separation is permanent. With self-pollination, the components separated by meiosis are brought back together. In contrast, the components are further separated if they mix and match haphazardly during out-crossing. Brandvain said the finding contradicts th...

Gene study shows three distinct groups of chimpanzees

...the gaps in our samples, but we think most of this separation is genuine, a long-term consequence of geographic ...ongoing loss of habitat has increased the physical separation between the three groups. The extent of accumulated genetic difference enabled the researchers t...

Applied scientists create wrinkled 'skin' on polymers

... construction of microfluidic devices for particle separation and mixture and also have potential use in designing biosenors. The researchers have also started a close collaboration with scientists at the Harvard-MIT Division of Health Sciences and Technology aimed at exploring the behavior of living cells on t...

QUT scientists on the way to sifting out a cure for HIV

...it is the membrane texture which is crucial to the separation efficiency of the material," he said. "It is scientifically known that a mesh structure is the most efficient form of filtration and we are the first group to successfully construct such a structure on a nanometre scale with ceramic fibres. "T...

Researchers develop technique for bacteria crowd control

...and identification of small bacterial samples, and separation sicken/live cells. A patent for the device is currently pending. "Using this method, our research succeeded in dramatically increasing the concentration of microorganisms in tiny fluid drops and films. Unlike traditional centrifuging techniques, ...

UW launches study testing adult stem cells for heart damage repair

...the bloodstream. Then, investigators use a cell separation system to remove from the subject's bloodstream a mix of cells containing the stem cells. When this process, known as apheresis, is complete, technologists further process the collected stem cells to select the CD34+ stem cells for use in this invest...

Fascinating spider silk

... protein by dialysis, the researchers observed the separation of two different fluid phases. Whereas one phase c...duct it drops to a slightly acidic level. No phase separation was observed for the synthetic spider protein when the pH was maintained at an alkaline level. At hi...

Plastic that grows on trees

...can increase HMF yield from glucose while reducing separation and purification cost. “The opportunities are endless,” Zhang said, “and the chemistry is starting to get interesting.”...

Researchers shed light on shrinking of chromosomes

... condensation, a process crucial to the successful separation of chromosomes. Using powerful microscopes, resear...safety net if something goes wrong with chromosome separation in earlier phases of division. When the researchers added chemicals to the cell to block the late co...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...tion with a hormone or naturally, you get the last separation of the chromosomes, from 46 to 23,” says Dr. Emmi. That separation enables a future baby to get half his chromosomes from mom and half from dad. Fragile spindles, whic...

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