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Tag: "sized" at biology news

Researchers track how spores break out of dormant state

...to a solution that triggers germination, nanometer sized etch pits were seen developing in the rodlet layer. These etch pits evolved into ever widening fissures, leaving narrow strips of remaining rodlet structure. In the end, 1- to 3- nm-wide fibrils remained. The in vitro AFM imaging also revealed the po...

Magnetic computer sensors may help study biomolecules

... in force, and the particles need to be micrometer sized or larger. Existing magnetic tweezers can trap smaller particles and apply torque, but typically require permanent immobilization of biomolecules, which is time consuming and prevents subsequent analysis. ...

Despite their heft, many dinosaurs had surprisingly tiny genomes

...Stegosaurus and Triceratops -- had more moderately sized genomes, akin to those of living lizards and crocodilians. We aren't sure about the genomes of the long-necked sauropods yet." Organ and Edwards say the clear-cut dichotomy in dinosaur genomes is likely due to different amounts of repetitive and n...

Scientists discover new species of distinctive cloud-forest rodent

...species of mammals and birds than any equivalently sized area in the world. "Like other tropical mountain ranges, such as the Himalayas, Ruwenzoris, Virungas and Kinabalu, the Andes support a fantastic variety of habitats," said Bruce Patterson, MacArthur Curator of Mammals at The Field Museum. "These i...

Groundbreaking Canadian asthma study

...outine procedure. physicians treat small to medium sized airways with Bronchial Thermoplasty (BT). The BT device generates radio frequency/thermal energy and reduces areas of underlying smooth muscle in the airways. The procedure is completed in three treatment sessions, each lasting less than one hour, an...

Bones at the nanoscale

...les: on one side they observed the 100 nanometers sized fibres, and on the other, the crystallites embedded inside the fibre, which are not bigger than 2 to 4 nanometers. The critical sample preparation was developed by Max Planck researchers, which made it possible to isolate tissue in bone of about ...

Taking 'chips' to the next level of gene hunting

...ns in people. The new TIP-chip contains evenly sized fragments of the yeast genome arrayed in dots left to right in the same order as they appear on the chromosome. Boeke's team used the one-celled yeast genome as starting material because, unlike the human genome, which contains hundreds of thousands ...

'Nymph of the sea' reveals remarkable brood

... Leicester, said : "Ostracods are common, pin-head sized crustaceans known from thousands of living species in garden ponds to oceans and from countless fossil shells up to 500 million years old; however, their fossilized soft-parts are exceedingly rare. "Supposed examples of fossil invertebrate eggs ar...

Humpback whales have brain cells also found in humans

...s take place, was similar in complexity to smaller sized cetaceans such as dolphins. The large area of cortex found in these mammals is thought to be related to acoustic capabilities and the current study shows that it is organized into a system of core and belt regions. However, substantial variability wa...

Contrary to common wisdom, scientist discovers some mammals can smell objects under water

...e same rate as the sniffing behavior of comparably sized land mammals, like rats and mice. "Rats and mice don't sniff the way we do," Catania said. "They push air 'out-in out-in' in a fashion strikingly similar to what the star-nosed mole is doing, except that it is doing it under water." Catania mounted...

Common carp sheds new light on surviving in extreme environments

...is because the fish has evolved in small-to-medium sized ponds in a harsh continental-type climate in Asia where the winters are very cold and the summers are hot and steamy. "Its ability to cope with such extreme conditions of temperature, lack of oxygen and dirty, sediment-laden water makes it a parti...

NYU researchers decorate virus particles, showing potential to enhance MRI capabilities

...sity have made chemical modifications to nanometer sized virus particles--a process that has the potential to improve magnetic resonance imaging (MRI) techniques. Their results are reported in the latest issue of Nano Letters. The study was conducted jointly by NYU's Department of Chemistry and the Depart...

Manchester scientists create new bio-gel for 3D cell culture

...g blocks and spontaneously assemble into nanometer sized fibres when exposed to physiological conditions, to create a fibrous gel-like structure in which cells can be cultured. Because thismaterial is made up of 99% water and is pH neutral, it is compatible with biological systems. "By using dipeptide bu...

Paleontologists learn how not to become a fossil

...re no more likely to become fossils than similarly sized varieties that lived out in the open. Perhaps fittingly, parasitic clams fared the worst. "They live inside the burrow of another animal, like a shrimp, or they live parasitically upon the soft tissues of another organism. These guys have a lousy fo...

Advanced genomics and proteomics improve the diagnosis and treatment of a deadly lung disease

...ncrements. "The fact that it makes these specific sized RNAs is important to the process," Doudna said. The small RNA fragments created by Dicer are then assimilated into large multiprotein complexes and guide those molecules to destinations in the cell where they turn off genes. "The size of these small...

Molecule does more than slice and dice RNA

...ncrements. "The fact that it makes these specific sized RNAs is important to the process," Doudna said. The small RNA fragments created by Dicer are then assimilated into large multiprotein complexes and guide those molecules to destinations in the cell where they turn off genes. "The size of these small...

New nano-canary in the nanotoxicology coalmine: The body itself

... To investigate the damage potential of sub-micron sized particles, S.K. Sundaram and Thomas J. Weber, scientists at the Department of Energy's Pacific Northwest National Laboratory in Richland, Wash., have harnessed living cells to monitor responses to a variety of biologically active test agents. They p...

There's something fishy about human brain evolution

...rains weigh roughly twice as much as our similarly sized earliest human relative, Homo habilis two million years ago. The big question is which came first ?the bigger brain or the social, linguistic and tool-making skills we associate with it? But, Dr. Cunnane argues that most anthropologists are ignorant...

Hanging baskets of sex and death help fruit growers

... three 1 hectare plots will be compared to similar sized orchard plots with dispensers without virus, or no treatment or sprayed with a commercial virus spray at the same virus dose. ...

MetaChip provides quick, efficient toxicity screening of potential drugs

... will be placed at random into one of four equally sized groups. One group will use BufferGel before each act of sexual intercourse, one group will use PRO 2000, one group will use a placebo gel, and the final group will not use any gel. In addition, all participants will receive condoms and extensive prev...

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