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Tag: "using" at biology news

New research shows sharks use their noses and bodies to locate smells

... created two parallel, turbulent odor plumes – one using squid scent and the other a plain seawater control. Minimally turbulent ‘oozing’ sources of squid odor and seawater control were physically separated from sources of major turbulence by placing a brick downstream from each oozing source to create two...

New designer lipid-like peptide with lipid nanostructures for drug delivery systems

... which represent a new class of designer materials using common amino acids, the same basic molecules from ...e since Laggner is a world-expert on nanostructure using small angle X-ray scattering and Zhang can provide the designer lipid-like peptides that he has been...

Want to save polar bears? Follow the ice

...ns we making within the next year. Fortunately, by using available data on sea ice trends over the past few decades, we can make effective decisions that can make a difference for the largest carnivore on earth." The "Warm Waters for Cool Bears" initiative represents a departure from previous polar bear...

Mule deer moms rescue other fawns

...th's issue of Animal Behaviour. In field trials using speakers that broadcast the calls of fawns under threat, the mule deer came to the speaker and stayed there as long as the calls played, twisting and turning as they confronted the perceived attackers. Whitetail mothers that came close to the speaker...

Better insight into brain anatomical structures

...ersity have now developed a new MRI contrast agent using manganese oxide nanoparticles that produces images...anges or physiological systems to be visualized by using the appropriate antibodies....

'Virtual Patient' to simulate real-time organ motions for radiation therapy

...g for lung movement. Xu contacted De, who had been using the 3-D VIP-Man to simulate tissue deformation for... Xu has been working on the 3-D VIP-Man since 1997 using the original Visible Human Project dataset provided by the National Library of Medicine, also funded...

Lessons from the orangutans: Upright walking may have begun in the trees

...ere the fruit typically is. Moving on two legs and using their arms primarily for balance, or "hand-assisted bipedalism," may have helped them travel on these branches. The researchers analyzed nearly 3,000 examples of observed orangutan movement, and found that the orangutans were more likely to use ha...

Human stem cell treatment restores motor function in paralyzed rats

...dy builds on Marsala’s previous work in rat models using human neuronal stem cells, published in October 20...y is continuous systemic or spinal drug treatments using implanted pumps. These approaches, while effective to a degree, are often accompanied by side effec...

Scientists discover 5 new species of sea slugs from the Tropical Eastern Pacific

...o existing collections, consulting specialists and using a scanning electron microscope to examine the jaws and other hard parts of the nudibranchs that distinguish species. This was part of the formal project “Phylogenetic Systematics of Nudibranchia,” sponsored by a National Science Foundation grant t...

Mice with a migraine show signs of brain damage

...iding a person’s triggers for the headaches and by using medications prescribed by doctors to prevent them....nd patients need to be diligent and rigorous about using preventive medications for migraine.? The work puts the visual disturbances known as auras that ma...

Salk scientists hammer out a pathway that promotes muscle cell survival in mice

...ced SIK1 activity in muscle cells grown in the lab using a technique that silences gene expression. Less SIK1 activity resulted in less phosphorylated HDAC. With the unphosphorylated HDAC brake now firmly in place, expression of muscle-specific target genes was also reduced. Conversely, when the researcher...

A cherry on top: Tart cherries may alter heart/diabetes factors

...ues, "We are interested in a whole-foods approach, using amounts of fruit that are relevant to human diets....ging." Bolling and Seymour performed the study using 48 male Dahl Salt-Sensitive rats, which are bred for their susceptibility to salt-linked high blood ...

Climate change was the cause of Neanderthal extinction in the Iberian Peninsula

...reconstructions elaborated from marine records and using the experience of Spanish and international research groups on Western Mediterranean paleoceanography. The conclusions point out that Neanderthal populations did suffer fluctuations related to climate changes before the first Homo Sapiens arrived in ...

Hearts of male and female rainbow trout are different

...energy substrate). Oxygen consumption was measured using a calibrated oxygen electrode and data acquisition system; or (2) electrically-paced (i.e., ventricle strips were electrically-stimulated at physiological rates and temperature in tissue baths containing buffer, with (a) glucose and (b) glucose + DCA...

Machine preservation may promote more organ sharing

...f appropriate donor and recipient matching through using the pump to assess viability and function. ...

Technique monitors thousands of molecules simultaneously

...to the polymer right above the electrode, and then using the electrode to initiate a chemical reaction that...n reaction, which converts an olefin into a ketone using palladium(II) on selected electrodes on the chip. In order to do this, the palladium(II) reagent nee...

pHLIP, a novel technology to locate and treat tumors

...d a new way to target and potentially treat tumors using a short piece of protein that acts like a nanosyri...reatment of breast cancer, and alternative designs using the principles they have already established. ...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

...ng. "Some remarkable discoveries have been made using insects that have subsequently allowed important advances in understanding how the human immune system works." As part of their innate immune system, insects use an enzyme called phenoloxidase to produce reactive molecules that kill bacteria and t...

Role of noise in neurons

... can have a wiring density of up to 4km per mm3 by using incredibly thin axons as wires, with an average diameter of 0.3 micrometers (1ìm is one millionth of a meter). Although, as in computer chips, this miniaturization economizes on space and energy, it increases the noise introduced by thermodynamic flu...

Novel system developed to turn data into real-time, interactive 3-D images

...raction of the time that physicians must now spend using current image viewing technologies," Clements says. The technology can be applied to any large 3- or 4-D data set but is most readily applicable to medical images. For instance, CT scans generate large 3- and 4-D data sets. The new technology wi...

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