Tag: "chamber" at biology news

Research team unlocks secrets of the firefly flash

...eam put live fireflies into a tiny custom-designed chamber and exposed them to oxygen and nitric oxide gas. The NO gas doses were similar to those used in treating heart and lung diseases in human patients. To the surprise of the scientists, whenever the fireflies were exposed to nitric oxide they glowed or ...

Researchers find enzyme crucial to preservation of memories

...ock to the footpads to the specific context of the chamber in which the shock is administered. In these exper...nt mice could learn to associate the shocks to the chamber context, but they had difficulties in converting such memories to long lasting memories, said Tonega...

Gout drug could offer hope for heart failure patients

...se of severe heart failure in which the lower left chamber of the heart becomes enlarged and weakened. Patients were taking standard medications for congestive heart failure, including ACE inhibitors and beta blockers. Allopurinol was infused directly into the heart while researchers recorded the patients...

Fly cells on the move may reveal clues to cancer metastases

...from the others and moves from the edge of the egg chamber to the center, sliding between nurse cells and com...t produces Unpaired will be whisked across the egg chamber by its neighbors. "Releasing Unpaired and turning on the JAK/STAT pathway in neighbors is all that's...

'Bat-n-man'

... were conducted in a heated (8590F), sound-proofed chamber which was lined with anechoic foam. Bats were kept lightly anesthetized throughout the course of the experiments; stimuli were generated using Modular Instruments and Tucker Davis Technologies digital hardware, and custom-written software. Responses...

Surviving hypoxia

...poxia familiarization by being put into a pressure chamber that simulates the low atmospheric pressure they would encounter at high altitudes. This approach isnt free of risk: its possible in some cases to suffer from decompression sickness (like the bends divers can get) or pressure trauma (burst eardrums,...

April GEOLOGY and GSA TODAY media highlights

...n the oldest known fossils. Shallow-crustal magma chamber beneath the axial high of the Coaxial segment of Juan de Fuca Ridge at the source site of the 1993 eruption. William Menke et al. Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA. Pages 359-362. In 1993 a volc...

Iron-rich soil can help remove lead; manganese also important

...laced in solution, which is injected into a filter chamber called a "reactor" -- one reactor per mineral type. The same amount of lead in solution is passed through each reactor. The results are measured in several ways -- the amount of lead in the water after it passes through the reactor being the obvious ...

Tibetans retain resistance to the oxygen-deficient disorder hypoxia regardless of altitude

...into the subjects by placing them into a hypobaric chamber for two hours, at a simulated height of more than 11,000 feet. Hypoxic tolerance was evaluated during acute hypoxia with cardiac-pump reserve capacity, exercise performance, oxygen transport ability, and activation of the autonomic nervous system. Re...

End of 'free ride' on ecosystem CO2 absorption

...n reduces this to 350 ppm at the opposite end. The chamber also includes controls to ensure that moisture and temperature levels match those outside. "There have been few experiments, even in growth chambers, that could explore the effects of changes since before the Industrial Revolution, but our design en...

DuPont to launch soybeans into space

...oybean seeds in a specialized tray within a growth chamber developed by WCSAR. The chamber will be delivered to the International Space Station (ISS) from the space shuttle flight. During th...

A message from nature to muskrats: 'Dont chill out'

...mitters. Rates of O2 consumption in the metabolic chamber were determined using a negative-pressure, open-ci... any point other than in a purpose-built metabolic chamber (14.6 L) situated at one end of the covered tank. Several behavioural indices of dive performance we...

Songbirds use mental pointer when playing tunes

...is not only more rehearsed than cellist Yo-Yo Ma's chamber music, but the bird even keeps its "finger" on its mental sheet music both day and night. In a National Science Foundation (NSF) supported study atLucent Technology's Bell Laboratories, researchers have discovered that signals serving as "mental po...

UT Southwestern researchers find protein that both instigates, inhibits heart growth in mice

...rous ruptures of the ventricular walls, thin heart chamber layers and blood in the fibrous tissue surrounding the heart. After birth, there were elevations as much as 19-fold in the number of growing cardiac muscle cells in mutant compared to wild-type mice, and gene profiling showed that 179 genes had ele...

Colorado U. to fly hardware, experiments on space shuttle, space station

...ther experiments involve plants grown in a special chamber known as the Plant Growth Bioprocessing Apparatus, also designed and built by BioServe and which will be delivered to the space station by Atlantis for a 50-day stay. The focus is on better understanding the role of gravity on lignin a plant substa...

Study reveals clues to brain development

... In one experiment, tadpoles were placed in a dark chamber for four hours and then moved into a chamber with a moving visual stimulus for an additional four hours. (The visual systems of frogs, humans, an...

Research reveals how an acid dissolves, molecule by molecule

..."snapshots" of reactions that occurred in a vacuum chamber into which they injected separate gas-like streams of water and hydrogen-bromide molecules and observed the reactions that occurred at their intersection using incredibly fast lasers. "Our femtosecond lasers emit very short pulses of laser light on ...

Scientists find grass yield, carbon storage not affected by creepy-crawlies in the soil

...with computer-controlled climatic conditions. Each chamber housed a mini grassland ecosystem one metre square taken from Sourhope, a grazed upland grassland habitat in Scotland. Over seven months researchers removed soil animals and then artificially reconstructed the grasslands with animals that differed i...

Chips that analyse cancer genes

... which is a plastic device with a very small glass chamber on it, barely visible to the naked eye," Dr Martin Fey, from the Institute of Medical Oncology, Bern, Switzerland, explained. "Chip technology enables you to screen all the characteristics that will show you how the tumour might behave. Thousands o...

First soybeans grown in space return to Earth

...n seeds grew in a specialized tray within a growth chamber developed by WCSAR. Pioneer scientists monitored the soybeans' growth daily and provided nutrient adjustments to facilitate growth. With the soybeans and seeds now on Earth, Pioneer and WCSAR will analyze the harvested seeds to determine if they have...

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