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Tag: "minute" at biology news

Vascular structure and function improve with diet and exercise

...verage VO2 max increased from 32.1 milliliters per minute per kilogram (mL/min/kg) to 35.3 mL/min/kg. Average body weight decreased from 92.5 kg to 90.9 kg (203.5 pounds to 200 pounds). "We were surprised that we saw such a weight reduction with the Mediterranean diet," Petrella said. "It was not a weight ...

Buying Time Through Hibernation on Demand

...espiration dropped from the normal 120 breaths per minute to fewer than 10 breaths per minute, and their core temperature dropped from the normal 37 degrees Celsius to as low as 11 C, depending on the controlled ambient temperature within the chamber. "We have, on demand, reversibly demonstrated the widest...

U-M team recovers ancient whale in Egyptian desert

...espiration dropped from the normal 120 breaths per minute to fewer than 10 breaths per minute, and their core temperature dropped from the normal 37 degrees Celsius to as low as 11 C, depending on the controlled ambient temperature within the chamber. "We have, on demand, reversibly demonstrated the widest...

Bioelectronic ‘signatures?hold key to DNA mutations

...single nanocrystal ?bind to a DNA sample and cause minute electrical current changes in the nanocrystal that can be measured with an electrode. The individual base-conjugated nanocrystals are added sequentially to any DNA sample of interest, generating an electronic “fingerprint?that rapidly identifies all ...

Researchers develop assay that could be applied to drug screening

...eld and David Perrais, simultaneously measured the minute movements made by coated pits as they invaginated and detected membrane scission, the process by which a coated pit is converted into a clathrin coated vesicle. In further experiments, the researchers showed how proteins linked to the actin framework...

A probe, not an echo

... pulse. "Typically the resulting images represent minute variations in relative attenuation over various frequency bands and they define the different sections of the tissue in the image," said Marmarelis. The two arrays, transmitter and receiver, are mounted on opposite sides of a drum that spins as it r...

Atmosphere may cleanse itself better than previously thought

...que, however, enabled the team to characterize the minute quantities of radiation absorbed by a substance called methyl hydroperoxide when it breaks up in sunlight and forms OH radicals. Methyl hydroperoxide is one of the substances that can absorb light in the lower UV spectrum, and the team theorizes that...

Going To Extremes To Improve Human Health

...hysiology labs. "The chamber allows us to monitor minute changes in the vascular and respiratory systems of subjects both at rest and when exercising," Minson explained. "It's already opening up new realms for our research mission." One example of the chamber's potential is enhancing researchers' ability ...

Beetle-inspired switch uses water for bonding

...arged atoms, called ions, in the water through the minute capillaries of a thin disk of porous glass embedded in the plate. The water moves and wells up into a micrometer-sized droplet on the plate surface. The exposed droplet can then stick to another surface. To break the bond, electricity pulls the expos...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...lab tests were held constant at 85 revolutions per minute (rpm) for comparison purposes, Armstrong's "freely chosen cycling cadence during time trial races of 30- to 60-minute duration increased progressively during this y-year period from about 85-95 rpm to about 105-110 rpm. This increase in freely chosen...

When in danger humans are similar to a deer in the headlights

...the neutral pictures. The number of heartbeats per minute was also lower after viewing the mutilation pictures than after looking at the others. "This pattern resembles the 'freezing' and 'fear bradycardia' seen in many species when confronted with threatening stimuli, mediated by neural circuits that promo...

New imaging technology shown to detect pancreatic inflammation in type 1 diabetes

...eing injected intravenously, these MNPs, which are minute particles of iron oxide, travel through the blood vessels of the body including the pancreas. If pancreatic vessels have become leaky from inflammation, the magnetic particles spill into nearby tissues, where they are "eaten" by scavenger cells calle...

Computers close in on protein structure prediction

...times more computer time." It takes less than one minute for a protein to fold into its correct shape in cells, but one oft-repeated estimate predicts it would take longer than the age of the universe for a computer to sample all the possible confirmations of a folded protein. Baker's lab already receives ...

Making plant cells work like miniature factories

...struments capable of identifying molecules in such minute quantities. "Developing the instrumentation is a large part of the proposal and we're building a special, high-resolution mass spectrometer," Yeung said, "because there's nothing available commercially that meets our needs." He added that the equipm...

Biologist Discovers What May Be World’s ‘Pickiest?Mates

...y entering 15 of them, during her one hour and six minute search. Why are female fiddler crabs so picky? The survival of their offspring, deRivera found in her experiments, appears to be strongly linked to the size of their mate and, more importantly, his corresponding abode. “The size of the male’s burro...

Novel protein complex enables survival in hostile environment

...ates it is clear that the enzyme will sense even a minute amount of sulfite and will neutralize even a large amount of sulfite very quickly. These properties suited the need of the ancient methanogens when oxygen appeared on earth," Mukhopadhyay said. "But, why did the organism have this enzyme in the first...

Penn Surgeons Use Completely Robotic Surgery to Successfully Treat Prostate Cancer

...rgery. For instance, the robotic “arms?filter even minute tremors of the human hand so to provide steadiness. The robot’s camera also provides a three-dimensional, stereoscopic image of the body’s interior, as opposed to a two-dimensional image on a flat screen. This improved perspective enables depth perce...

Scientists learn to predict protein-stabilizing ability of small molecules

...rgery. For instance, the robotic “arms?filter even minute tremors of the human hand so to provide steadiness. The robot’s camera also provides a three-dimensional, stereoscopic image of the body’s interior, as opposed to a two-dimensional image on a flat screen. This improved perspective enables depth perce...

New male contraceptive clears hurdle

...vides 10 or more years of protection after a 10-15 minute procedure. Researchers received approval this week to begin enrolling additional study volunteers, after a delay of nearly four years. "RISUG would be exciting because it would mean that, finally, I could take control of my own future, instead of le...

Chemical warfare agent detection technology used to treat lung disease

...which are currently deployed in airports to detect minute traces of explosives or drugs. The microDMx sensor is able to identify molecules that may be the cause of lung diseases such as cancer, asthma and chronic obstructive pulmonary disease caused by smoking. Dr Paul Thomas from the University's School o...

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