Nano probe may open new window into cell behavior
...to movies of cell biochemical activities with high spatial and temporal resolution. The SMS probe can be readily integrated with the Atomic Force Microscope (AFM) or other scanning probes, and can not only image biochemical activity but also monitor the changes in the cell/tissue topology during the imagin...Atomic-resolution structure of a ribozyme yields insights into RNA catalysis and the origins of life
... able to obtain a three-dimensional picture of the spatial arrangement of the several thousand atoms that comprise the ribozyme, known as the hammerhead ribozyme. The resulting color-coded structure was recently featured on the cover of the abstract book for the annual meeting of the RNA Society held in Seat...It's 2025. Where do most people live?
...e globe. Known as "downscaling," this new arena of spatial analysis and demography is expected to be of particular interest to conservationists, climate specialists and others who need to know where people will live, and in what numbers, in coming decades and in extremely fine detail. The data may also provi...Saving the planet from a mathematical perspective
...mines the dynamics of populations and communities; spatial heterogeneity and problems of scale; evolutionary ecology; and the application of ecological principles to achieving a sustainable future for humanity. He is especially interested in the self-organization of ecosystems from individual interactions, ...Pathway toward gene silencing described in plants
...gure out not only the order of events but also the spatial organization of the pathway in the nucleus. Our hope for the future is to develop tools that will enable us to watch the pathway function in live cells using fluorescent proteins and time-lapsed microscopy, to learn even more."...Climate change not the only factor controlling distribution of plant species
Biogeographers have long recognized that the spatial distribution of plant species, at a coarse resolution, mainly reflects each species' climatic requirements. However, few studies have carefully matched maps of a species distribution with maps of climatic variables to see where climate may fail to pr...News tips from the Journal of Neuroscience
... ( 75% of trials correct) in response to a grating spatial frequency of 0.89 cycles per degree. After 5 month..., Osipova et al. made use of the high temporal and spatial resolution of magnetoencephalography (MEG) to examine oscillatory activity associated with a memory ...News tips from the Journal of Neuroscience
...ion. Monkeys were presented with three options for spatial goal selection, in the form of shapes on a video s...nt trial, the monkeys were trained to select a new spatial goal when the visual cue changed and to maintain the present goal when the visual cue was repeated. ...Soft materials buckle up for measurement
...ials. This capability makes it possible to "map" spatial variations in rigidity in complex materials and devices. Accordingly, the new method may be a powerful tool to test for flaws or weak regions in soft materials products, the researchers suggest. Another key aspect of the technique is its speed. Th...Septum keeps neurons in synch, can reduce epileptic seizures by 90 percent
...s a part of the brain that plays a role in memory, spatial navigation and sensory motor integration, among other functions. Normally, the hippocampus oscillates at a frequency of 3-12 Hz, a frequency that is called the theta rhythm, Colom explained. Oscillations at theta frequency are important in processin...Global patterns of geographic range sizes: A bird's eye view
... plummet, determining the mechanisms that underlie spatial variations in species' range size will help explai... a major taxonomic group -- birds -- and show that spatial patterns of range size across the globe do not follow a simple north-to-south rule. The smallest ran...Long-term study shows brain function not impaired by tight diabetes control and hypoglycemia
...lving, learning, immediate memory, delayed recall, spatial information, attention, psychomotor efficiency and motor speed. Adjusting for age, sex, years of education, length of follow-up, and the number of cognitive tests taken, the researchers found no change in any of the eight areas. Higher A1C readings a...Sandia tool speeds up environmental cleanup, reopening of contaminated facilities
...terrorism attack, BROOM is easily adapted to other spatial domains where accurate and efficient data tracking, management, optimization, and analysis of samples are needed. Possible users and/or applications of BROOM include: Environmental cleanup (including Superfund sites) Remediation companies In...Evidence human activities have shaped large-scale ecological patterns
...e first evidence that ecological patterns at large spatial scales have been significantly altered within rece...ping ecological patterns at continental and global spatial scales has been understudied. This is due in part to the assumption that these large-scale patterns...Patients to benefit from novel technology revolutionizing high-speed molecular imaging
...een struggling with the inherent trade-off between spatial resolution and sensitivity associated with radionuclide imaging," said Patton. "D-SPECT collects photons with much higher efficiency (order of magnitude) due to usage of a splitscanning detector design capable of dwelling more on the organ of interes...Who are we up against? Local vs. global competition influences cooperative behavior in humans
...eration within groups. The findings show that the spatial scale of competition influences cooperative behavior, and may drive evolutionary changes that affect the social behavior of a given species. The authors point out that the responses observed in their study could be exploited by engineering the struct...Just-right PET/CT imaging for patients of all sizes
...-flight information was obtained at the expense of spatial resolution and sensitivity. Philips Gemini TF is the world's first commercially available time-of-flight PET/CT system that allows this more accurate tracking of photons using time measurements without compromising good characteristics of traditional......cted to a small number of cells or suffer from low spatial resolution. The scientists in Martinsried develope...rve cells in the tissue of a brain slice with high spatial resolution. This technique involves culturing razor-thin slices of the hippocampus region on semicon...... back toward the midline. The precise temporal and spatial pattern of Wnt5a expression suggested that it drives callosal axons beyond the midline by a chemorepulsive mechanism. Coimmunoprecipitation showed that Wnt5a binds the extracellular domain of Ryk. 3. Estrogen Levels and -Opioid Neurotransmission Y...