Tag: "separation" at biology news

Technique Gives Researchers New Look At Genetic Activity In Living Cells

...unctions of proteins required fornormal chromosome separation in both yeast and human cells. Harvard researchers,using the method on bacterial cells, are questioning the theories on chromosomesegregation. They now suggest an active, mechanical system for the separation. Such a mechanism had been thought to ex...

Argonne Researchers Develops Simple, Inexpensive Method For Cleaning Industrial Waste Streams

...ion exchange processes, efficiencies with magnetic separation are asmuch as 100 times greater. The extractant coatings are effective in acidic andcaustic conditions, eliminating problems and costs associated withneutralization. Unlike ion exchange and solvent extraction, this process iseffective with fine parti...

Measurement Technique Provides Snapshot Of Cell Physiology

...ighly sensitive. "By combining a nanoliter-volume separation technique with an information-richspectroscopic de...puter. "We can identify compounds not only by the separation time, butalso by the spectral fingerprints in the fluorescence emission," Fullersaid. "This means w...

Perkin-Elmer To Introduce New Instrument Based On Breakthrough DNA Analysis Technology

...bines proven capillary electrophoresishardware and separation polymer chemistry, with new detection technologyand automation. The 3700 DNA Analyzer is designed for customers who require: Ultra-high throughput 24-hour, multi-run unattended automation, including gel-pouring and sample loading Operating ...

Hopkins Study Shows High Prevalence Of Domestic Violence

...seholds. Campbell says the studyalso revealed that separation from a partner is an important risk factor forabuse. Women in the survey who have ended a relationship in the past year wereseven times more likely to experience abuse from the estranged partner. "This study suggests that we, as health care p...

Pet Therapy Programs Help Patients In Rehab, Physical Therapy And More

... from the owner to makesure it doesn't suffer from separation anxiety." Currently more than 20 dog/owner teams participate in the hospital's two pettherapy programs. "The best human volunteers have patience and are responsive tothe patient, staff and family members," says Barbara Cowen, the licensedclinical s...

Rare Fossil Shows Dinosaurs As Fast, Dangerous

...searchers said, is the clear presence ofa complete separation of the body cavity into two parts, one containing thelungs and heart, and the other holding the liver and guts. This sort of body cavity partitioning is only seen in living animalsthat use an active diaphragm to help ventilate their lungs, su...

A Versatile Signal In Vertebrate Embryogenesis: Wnt-4 Regulates Kidney Development, Sex Organ Differentiation, Neuronal Survival And Axonal Guidance

...ture of inductive events inthe kidney using tissue separation and recombination techniques. The uretericbud induces the mesenchyme to condense and to form tubules - precursors tonephrons. The mesenchyme in turn promotes ureteric bud proliferation andbranching. The ureteric signal can be mimicked by other tissue...

New Technology Turns French Fry Oil Into Diesel Fuel

...ut of the finished product. The result is a better separation ofbiodiesel and glycerol, and a cleaner, higher grade of both substances. Current separation methods result in a low-grade glycerol, which is worthless.On the other hand, the high quality glyce...

Center For Ion Mobility Spectrometry Established At INEEL

...se will allow thistechnology to compete with other separation methods like chromatography and massspectrometry. Chemist Gary Eiceman, at New Mexico State University, leads a group thatworks on both the chemistry of ion mobility and instrument development. "NewMexico State has traditionally bridged the ...

UI Laboratory Develops Procedure To Study DNA Replication

... The advantage of this system is that it allows separation of the DNA replicationprocess from the synthetic reactions. This separation has been difficult toachieve in previous replication systems. Using his technique, Wold hopes that h...

Urine Test For Cancer Under Development

...time-consuming, notcosteffective, and provide poor separation of similarly structured pteridinederivatives. Ma'sgroup tested urine samples by first separating derivatives with high-performancecapillary electrophoresis, then quantifying the minute amounts by laser-inducedfluorescence detection. "The investigati...

Tipsheet: Environmental Story Ideas

...s Stewart Lake. Koegel says odor is removed in the separation process. But whether the publicever catches wind of the material might depend on the wood market, whereshortages in wood and paper pulp are predicted. "People should know the research is preliminary," adds Koegel. "Otherwise, I'llget phone calls from...

Ginkgo herbal supplements vary widely in content

... the researchers. "The lack of simple and reliable separation and analytical processes for herbalproducts is probably a major cause of the quality-related problems found in theherbal medicine market today," according to the researchers. The process developed by Wai and colleague Qingyong Lang could help solve t...

Technotes -- Pacific Northwest National Laboratory's summer news tipsheet

...chers have teamedwith two companies to improve the separation process of aluminum from steel,plastics and other lightweight materials used in car design in an effort tomaximize recycling of aluminum. Pacific Northwest has teamed with the Albany Research Center in Albany, Ore., todevelop a technique to separate ...

Enzyme-based method to isolate stem cells from umbilical cord blood shows promise

...cells -- are then selected automatically. Current separation methods, primarily focused on detecting proteins on thesurface of stem cells, are complex and expensive and are complicated by thepossibility that not all stem cells express these proteins, the researchers say.The advance, reported in the Aug. 3 issu...

Stanford scientists use noise to sort proteins

...3 issue ofthe journal Science. Unlike conventional separation techniques, their system can separate membranemolecules in their native environment and do so continuously, rather than inbatches. Because it relies on fabrication techniques developed in themicroelectronics industry, the device should be inexpensive...

Mechanism found that appears to keep body tissues together

...roteins from abruptly ripping apart." The sluggish separation behavior could be a result of multiple adhesive contactsbetween different parts of the proteins, Leckband said. The scientists haveidentified at least two configurations in which the proteins bind, and thesemultiple interactions could retard or prev...

Scientists map brain's primary memory network

... to chooseat end of the trial. "There's a distinct separation up and down the hippocampus with respect to whichgroups of cells fire during the different phases of the memory task," Deadwyler said. "The findings extend this knowledge of hippocampal encoding to an anatomic framework ofoverlapping 'memory network...

Rotational motion detected in gates controlling nerve impulses

...oltage across the membrane," Bezanilla said. "The separation increased from 26.5 angstroms when the gate was closed, to 29.5 angstroms when the gate was fully open." To determine the nature of that movement, Cha labeled other nearby sites and repeated their measurements. Surprisingly, some of these other amin...

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