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Tag: "pick" at biology news

Brightening prospects of using fluorescent nanotubes in medical applications

...of wavelengths, or colors. This makes it easier to pick out their signal against background noise. Furthermore, they produce light in a part of the spectrum – the near infrared where skin and other tissue is transparent – that allows the nanotube light to stand out. Nanotubes are made entirely from gr...

Putting feelings into words produces therapeutic effects in the brain

...lar psychology says when you’re feeling down, just pick yourself up, but the world doesn’t work that way. If you know you’re trying to pick yourself up, it usually doesn’t work — self-deception is difficult. Because labeling your feelings d...

A frown or a smile? Children with autism can't discern

... stereotyped patterns of behavior. “They don’t pick up what’s going on ?they miss the nuances, the body language and facial expressions and sometimes miss the big picture and instead focus on minor, less socially relevant details,?Davies said. “That, in turn, affects interpersonal bonds.? ...

Toxoplasmosis infection trick revealed by scientists

...ic-level detail of how diseases like toxoplasmosis pick out and invade host cells in the human body is vital if we want to fight these diseases effectively. "Now that we understand that it’s a key interaction between a protein on the parasite’s surface and sugars on the human cell which lead to the ce...

Left-right wiring determined by neural communication in the embryonic worm

...l of internal lop-sidedness. From the hand used to pick up a pencil or throw a baseball, to where language is generated in the brain, to the orientation of our internal organs, humans are a glut of asymmetries. Worms aren't so different: The roundworm Caenorhabditis elegans has nerves on its left and righ...

Selectivity is ultimate aphrodisiac

...position of a speed dater. You're not only able to pick up something about the degree to which that person likes you, but you're able to pick up -- in four minutes -- the degree to which that person likes you more than their other dates. It's...

Robotic therapy helps restore hand use after stroke

...ng a block, gripping a drinking glass, pinching to pick up a small marble or ball bearing, and putting your hand on your head -- improved by nearly 10 percent. And their average score rose by nearly 20 percent on the Box-and-Blocks Test, which assesses manual dexterity as one moves blocks from one side of...

Trusting your instincts leads you to the right answer

...nitive processes. Participants, who were asked to pick the odd one out on a screen covered in over 650 id... subconscious scanning technique that allows us to pick out unique and distinctive features in a crowd ?such as colour or orientation. Soon after our eyes h...

Stretching DNA to the limit

...ure to UV irradiation. The researchers essentially pick up individual DNA molecules with the tip of a scanning probe microscope and stretch it while measuring the forces generated. These "stretch—release" measurements enable the accurate determination of changes in the elasticity of the DNA strands. Upon ...

Walking molecule now carries packages

... molecule carrier runs on a copper surface. It can pick up and release up to two carbon dioxide (CO2) molecules and carry them along its straight path. "Carrying a load slows the molecule down" explained Bartels. "Attachment of one CO2 molecule makes the carrier need twice as much energy for a step, an...

Microfluidic chip helps solve cellular mating puzzle

.... First, sensors on the surface of a yeast cell pick up signals that a mating partner is nearby. Then the message is passed down toward the cell’s control center, the nucleus. The messengers that carry it to the nucleus are MAPKs, which direct the cell’s response by triggering multiple genes. But biolo...

Baby fish 'smell their way home'

...n and mucus from its life. We think baby fish can pick this up and distinguish it from other reefs. "We think some fishes then choose currents that smell like 'home' and swim up them. The ones that cannot do this perish. The ones that get home preserve the unique 'ethnic' make-up of their tribe ?and...

Fish can determine their social rank by observation alone, study finds

...really valuable for them to know in advance who to pick a fight with." The Nature experiment was designed by lead author Logan Grosenick, a graduate student in statistics at Stanford, and Tricia S. Clement, a former postdoctoral fellow. Their goal was to determine whether territorial fish use a type of...

Colour sensor breath test can detect lung cancer

A breath test can successfully pick up lung cancer with "moderate accuracy" even in th...s are often not specific, it is often difficult to pick up the disease at a stage when it could be treated effectively, say the authors. Diagnosis is oft...

New technique boosts size of proteins that can be analyzed

.... They are sprayed in an electric field where they pick up charges and are vaporized as they pass through a heated capillary. Then they are hit by air molecules in low-energy collisions to keep the protein from folding up; then they are slammed with air molecules in high-energy collisions to dissociate th...

Fast test for low blood flow in dogs detects early heart trouble

...ameter, often makes it difficult for physicians to pick up the subtle clues that signal the presence of arterial disease. He notes that blood vessels begin to narrow long before mild chest pain and other symptoms occur, leading to reduced blood flow that gradually starves the heart of needed oxygen and n...

Lab-on-a-chip could speed up treatment of drug-resistant pneumonia

...s, where patients with weakened immune systems can pick up obstinate, life-threatening infections such as pneumonia. "When you get pneumonia in the hospital, you're much more likely to get a resistant strain," Lochhead said. "It's an emerging public-health disaster." The most acute cases are admitted i...

Microbe fixes nitrogen at a blistering 92 C

...n water that percolates down into the seafloor can pick up enough heat from volcanism deep in the earth to cause the fixed nitrogen to revert to its gaseous form. Venting water hotter than 30 C contains very little nitrate so organisms in areas where the subseafloor temperatures are higher would lack nitr...

The brain's motivation station

...he scene, and the next day tested their ability to pick the scene out of a group. The researchers found that the subjects were far more likely to remember high-value scenes than low-value scenes. Importantly, they found that the cues to the high-reward scenes that were later remembered--but not those sce...

'Cellular antennae' on algae give clues to how human cells receive signals

...s to make fertilization possible, line the nose to pick up odors, and purify the blood, among other tasks. With such a range of abilities, cilia serve as both motors and "cellular antennae," said Dr. William Snell, a professor of cell biology at UT Southwestern and senior author of new research on cilia...

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