Tag: "kinetic" at biology news

Livermore research in accelerator mass spectrometry highlighted at ACS meeting

...ns. Westbrook and colleague William Pitz have used kinetic modeling to observe the soot production chemistry involved. The chemical kinetic models used in studying soot production during munitions destruction were originally developed in Li...

Yale scientists visualize details of how hepatitis C unwinds RNA

...the helicase proceeds through discreet spatial and kinetic microstates," Pyle said. "We actually track the speed and processivity of the helicase as it passes through each base pair of its substrate." "While this report is the first of its kind, and has produced highly significant results, it is only the ...

Organic & Biomolecular Chemistry

...se Finian Leeper, Cambridge, UK Non-steady-state kinetic study of the SN2 reaction between p-nitrophenoxide ion and methyl iodide in aprotic solvents containing water. Evidence for a 2-step mechanism. Vernon D. Parker, Utah State, USA Facilitated transport of sodium or potassium chloride across vesicle ...

Researchers elucidate machinery of major anti-cancer target

... FTase, and our structural studies depended on the kinetic pathway worked out in his laboratory to trap the protein in the different stages of the reaction," she said....

Abnormal chemical bonds cause bleeding disorder

...ng disease has been linked to an alteration in the kinetic properties of a chemical bond," says study leader Thomas G. Diacovo, M.D., assistant professor of pediatrics and of pathology and immunology. "The finding should give us a better understanding of how normal platelets function and of the delicate bala...

Impact events' kinetic energy may be key to understanding the severity of mass extinctions

The kinetic energy created by asteroid and comet impacts with ...zoic and Cenozoic can be correlated with the total kinetic energy released by impacts that occur during the geologic age of the mass extinction. Lucas will pr...

Northeastern University's Alexander Gorlov wins prestigious Edison Patent Award for helical turbine invention

...n makes possible the high efficiency conversion of kinetic energy from relatively slow-moving and multidirectional fluid flows into electrical energy. The Gorlov Helical Turbine was also named one of Popular Science's top 100 innovations of 2001. In the pursuit of his lifelong dream of creating inexpensive,...

Rutgers to start up National Program of Excellence in Biomedical Computing

...transcription and the interaction of genes through kinetic models at a higher level of modeling," said Levy....

Phenotype MicroArray(TM) can test thousands of cell properties simultaneously

...ecified period of time, producing quantitative and kinetic data for each cell function test. Incubation and recording of phenotypic data are performed by Biologs OmniLogTM PM System, which uses bioinformatic software to report changes in specific cell functions. Biolog developed its PM technology using i...

Scientists share multidisciplinary discoveries at 'Earth System Processes'

...for the oxidation of Earth. He postulates that the kinetic effects of oxygen and methane are reversed from today; in effect hydrogen escape to space was inescapable and oxygenation of the atmosphere was irreversible. Christian J. Bjerrum, Danish Center for Earth System Science at the University of Copenhage...

Chemists characterize regulators of zinc intake and export in cells

... Hopkins Bloomberg School of Public Health. "Its a kinetic process any zinc that shows up in the cell is immediately taken away, to work reactions in the cell, to bind to proteins such as Zur or ZntR or, if no zinc is needed, to be sent packing out of the cell."...

Unified theory relates microbial metabolism to lab and field

...n many cases, can be shown to result directly from kinetic and thermodynamic principles." The researchers presented their unified theory of microbial kinetics at the annual meeting of the Geological Society of America, held Nov. 9-18 in Reno, Nev....

Physicist says women could vault to new Olympic records

...lting is an example of conservation of energy: The kinetic energy, or energy of motion, of the runner's approach speed is converted, through the pole vault, into the potential energy of the jump height. The faster a vaulter sprints toward the vault bar, the more energy is available for the vault. Nielsen ...

Cell Pathways scientists describe mechanism by which SAANDS compounds trigger programmed death in cancerous and precancerous cells

..., but differs in their immunological, physical and kinetic properties. Only a limited number of PDE isoforms are expressed and used by any single type of cell or tissue to regulate cGMP or cAMP levels. Pharmaceutical developers have been studying these enzymes as potential drug targets to modulated cyclic ...

MetaPhore reports general anti-inflammatory surface treatment for biomedical materials

...s a low molecular weight, remarkable oxidative and kinetic stability, and heat stability up to 350 degrees. The SOD mimic used in this research is not a protein like the natural form, but instead is a specially constructed manganese-based compound. Attempts to use natural, bovine-derived SOD enzyme in cli...

New fossil snake with legs, reported in Science

...had concluded that the snake was incapable of such kinetic feats, instead adopting a modified gape similar to that of the mosasaurs as an intermediate step between the rigid skull of lizards and the mobile skull of higher snakes. "We went back and looked very carefully at the skulls of Pachyrhachis , Haas...

Melatonin: More Than You Bargain For?

...als but whosebiological function is unknown. "Our kinetic modeling, using competitivereactions, indicate that the reaction of melatonin with peroxynitrite-derivedfree radicals is physiologically important," states Squadrito adding that it"becomes even more important when taking melatonin as a supplement." W...

Trash From Crop-Processing Plant Harvested For Disease-Fighting Agents

...The work was based on a newlydeveloped cell-growth kinetic assay. The soy protein finding did not come as a surprise, because the apparentpositive effects of soy protein and itsestrogen-like isoflavones have been documented. But the still-evolving techniquemay allow scientists to moreprecisely identify the s...

Protein Adultery Revealed!: Mechanism Of Protein Folding Captured In Computer Simulation

...nte Carlo [statistical] simulations unveil how the kinetic competitionbetween folding and aggregation is resolved by the 'good' sequences-- built-inprotection against aggregation, due to their hydrophobic-hydrophilic pattern,"says Istrail. "This allows them to escape misfolding traps and move towards thehypo...

Study Of Raindrop Energy To Aid Fight Against Crop Diseases

COLUMBUS, Ohio -- A sensor that measures the kinetic energy of falling raindrops... could simply calculate the kinetic energy. The problem: standard rain gauges measure how much rain falls overtim...

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