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Tag: "maps" at biology news

Exploring the dark matter of the genome

...cal locations on the chromosomes. The sequence and maps prepared the ground for the next stage in the process, the functional analysis of the fly's heterochromatin. "Historically it was called junk. We set out to see if there was any information in that junk," says Chris Smith, formerly in Berkeley La...

NASA-funded robotic sub finds bottom of world's deepest sinkhole

...red the cenote. It also used the sensors to create maps of the sinkhole’s interior via a technique called simultaneous localization and mapping, or SLAM. Prior to the DEPTHX field experiment, SLAM had been used for navigating in buildings and mines, but had never operated in an underwater environment or w...

Fast and slow -- How the spinal cord controls the speed of movement

...lished in the March 1 issue of the journal Nature, maps how neurons in the bottom of the fish’s spinal cord become active during slow movements, while cells further up the spinal cord activate as movements speed up. By removing specific neurons in the lower spinal cord with laser beams, the researchers...

Brain maps online

... paper describing the work. The high-resolution maps will enable researchers to use "virtual microscopy...nd assembled like tiles into composite images. The maps have a resolution of better than half a micrometer per pixel, or 55,000 dots per inch, with virtual ...

City ants take the heat

...nvironmental Change. "We will construct thermal maps using satellite images recorded over several years. These maps will enable us to assess the potential biological consequences of urban warming and identify suitabl...

Bioluminescence at the service of a novel cerebral imaging technique

...t is possible to draw up anatomical and functional maps of the brain (in this case, of the Drosophila) based on long-term recordings. Such maps do not yet exist for any animal species, including man. A funding application has been made to t...

Map predicting spread of avian flu

...missible animal diseases between farms. These risk maps identify geographic areas in which a given intervention strategy fails to control the spread of the disease between farms. "The risk map concept is an instrument suitable for analyses of epidemic control options both during crisis and in peacetime" s...

Mosquito genes explain response to climate change

...ee billion base pairs in humans. As various genome maps are being completed, scientists now face the task of determining how genes interact and how they produce specific phenotypes (observable traits), which include photoperiodic response and dormancy. "Climate changes already are extending the growin...

Cancer cells forming blood vessels send their copper to the edge

... iron, copper and zinc. Overlaying these elemental maps onto optical images of the cells, Finney and her colleagues then correlated elemental content with cellular structures. "Our findings were very clear," said Finney. "We observed a dramatic relocalization of between 80 and 90 percent of cellular co...

Dig deeper to find Martian life

...n the journal ‘Geophysical Research Letters?(GRL), maps out the cosmic radiation levels at various depths, taking into account different surface conditions on Mars, and shows that the best place to look for living cells is within the ice at Elysium, the location of the newly discovered frozen sea on Mars....

NASA snow data helps maintain nation's largest, oldest bison herd

... range areas. The snowpack model provides daily maps of snowpack depth and density throughout the Yellowstone landscape, in near-real time. It uses data from NASA's Landsat satellite to describe how the snowpack is influenced by patterns of vegetation, geothermal features, and wind. Daily measurements ...

New brain-chemistry differences found in depressed women

...he PET scanner, so that the researchers can create maps of the specific brain areas where the natural mu-opioids are more or less active at any given time. In the new study, the researchers also found that the mu-opioid system was overactive in women with depression, even at baseline, when they weren'...

Powerful genome ID method extended to humans

...technology known as "optical mapping." Restriction maps provide coordinates on chromosomes analogous to mi...d structure between two genomes. Comparing optical maps of healthy and diseased genomes can guide researchers to crucial mutations. Though he called opti...

Mapping the mouse genome

...the mouse genome--one of the most detailed genetic maps now available aside from that for humans. To create this map, they used two groups of mice: one consisting of outbred, heterogeneous stock (HS) and the other of recombinant inbred lines (RI). Using the single nucleotide polymorphism (SNP) data tha...

Taking 'chips' to the next level of gene hunting

...l row of dots, the researchers learn that the data maps to the region of the genome contained in the bottom layer; likewise, if the experiment highlights a vertical row, the data correspond to the top layer. Says Boeke, "It's so easy to differentiate the top and bottom layers. Next we're going to try a...

Beyond the book: Software automates access to brain atlases

...s the data in a variety of ways, including spatial maps and alphanumeric information, coming off a single interface. It includes all the information in the printed volumes, in a much more accessible form. It does so without violating copyright, Burns said. Publishers of the atlases make available to pur...

Hard-wiring the fruit fly's visual system

...oth vertebrate and fruit fly have so-called visual maps in the brain that represent the world they see. These visual maps consist of millions of nerve cell contacts that need to be wired correctly during development in ord...

Master planners in brain may coordinate other areas' roles in cognitive tasks

...ight hemispheres. "For years, when you looked at maps of what different parts of the brain do, the opercula have often been blank," notes senior author Steven Petersen, Ph.D., James S. McDonnell Professor of Cognitive Neuroscience; professor of neuroscience, of neurobiology and of radiology; and associa...

African wetland managers armed with new technology

...ucts include base maps, land use-land cover (LULC) maps and change detection maps ?with historical Earth Observation (EO) satellite images being compared with current acquisitions to...

All the eggs in one basket

... Environment. The researchers present the first maps of historical nesting populations Hunted for hundreds of years for food and for decorative purposes, turtle populations were greatly reduced by people. Using trade records from 163 historic sources in four time periods in 20 Caribbean regions, Mc...

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