Tag: "volume" at biology news

What remains to be discovered in Central American forests

...n important first step in trying to fill them. The volume includes contributions by a number of STRI researchers: Mireya Correa, Noris Salazar, Stanley Heckadon and Maria Staff. Cristian Samper, STRIs Acting Director, who is, himself, very active in establishing a global adgenda for research and conservatio...

Hopkins scientists identify molecular details of water transport in the lung

...y in both groups, suggesting the increase in fluid volume from the infusions was the same. However, airway wall thickness increased by 40 percent to 50 percent in the normal individuals, while there was absolutely no change in the protein-deficient individuals. In normal lungs, a fluid challenge like th...

UT Southwestern space researchers pinpoint mechanism involved in loss of consciousness after space flight

...y problem, namely an excessive reduction in stroke volume while standing, which causes the heart to stiffen ...he heart size and flexibility and expand the blood volume and behavioral modification to facilitate return of blood back to the heart has helped more than ap...

2002 Ocean Sciences Meeting - Media Advisory 1

...dvance of the meeting. ____ I prefer a bound volume in advance of the meeting. How shall we send the abstracts? ____ Send Abstracts to me at the above address by USPS First Class mail. ____ Send Abstracts to me at the above address (no P.O. Boxes!) via express service Name of express servi...

Respiratory activation in patients with obstructive sleep apnea syndrome (OSA)

...was 10.7 2.6 l/min. There was no change in tidal volume or breathing frequency. An examination of the eight subjects in the second night study using CPAP found that there was no difference in the findings between the first and second night readings. Likewise, there was no change in respiratory frequ...

Subjects lying face up reveal a reduced ability for 'nasal air conditioning'

...ncrease nasal airway resistance and decrease nasal volume secondary to an increase in the volume of the capacitance vessels of the nose. Although actual blood volume in the cavernous sinusoids has ...

Monitoring epithelial plasticity, one cell at a time

The kidneys maintain plasma volume and composition by adapting to shifts in the concentration of ions and other solutes. Some years ago, Schwartz and colleagues identified one such homeostatic mechanism, in which acidosis alters the cellular population within the cortical collecting d...

UNC botanist spearheads ongoing effort to curtail movement of pest plant species

...des of conduct as a way of trying to turn down the volume of potential pest species released into the environment. In 1996, the N.C. Botanical Garden was the first North American garden to establish a policy on alien species that present potential environmental threats. Two years later, it adopted strict g...

Baxter's HomeChoice Pediatric dialysis system receives market clearance from FDA

...system is specifically designed to deliver a lower volume of fluid to the patient during dialysisas little as one-quarter of what adults typically receivewhich is required for smaller patients. The system integrates a new version of Baxters PD Link software (version 3.0), which enables the physician to re...

December media highlights - GSA BULLETIN

...l occurred every 500 to 1500 years. The extent and volume of the small event during the 1400s and of the eruption ca. 2050 yr ago indicate that future Mistis eruptions, even moderate in magnitude, will entail considerable hazards to the densely populated area of Arequipa....

The ecological consequences of 'promiscuous' boating

...t seem significant at first glance, when the large volume of transient boat traffic at these boat launches is taken into account it becomes clear that there is the potential for these boats to transport a live zebra mussel into inland waters. Indeed, their model predicted over 170 dispersal events from jus...

World's smallest lizard discovered in Caribbean

...arger its surface area gets as a percentage of the volume or mass of its body. At some point, it gets to be physiologically impossible to get any smaller." For the lizard, which lives in a dry environment surrounded by comparatively moist leaf litter, the limiting factor is the danger of desiccation. "If...

World's smallest lizard discovered in the Caribbean

...larger its surface area gets as a percentage ofthe volume or mass of its body. At some point, it gets to bephysiologically impossible to get any smaller." For the lizard,which lives in a dry environment surrounded by comparativelymoist leaf litter, the limiting factor is the danger ofdesiccation. "If we ...

UT Southwestern research projects bolstered with $3.6 million in funding

...programs. You can use ARP/ATP funding to collect a volume of data, then leverage that into larger grants from institutions like the National Institutes of Health and the National Science Foundation, he said. The UT Southwestern awards were among 402 grants issued under the 2001 ARP and ATP programs. More th...

Influence of gender on upper airway structure and function during obstructive sleep apnea

...orted by a recent finding of increased soft tissue volume in the necks of men compared with women. Second, neuromuscular factors are the dominant factors when the upper airway is challenged and these factors are not different between men and women. The similarity in Pcrit and the similarity in genioglossus...

Women more susceptible to orthostatic hypotension

...ions in venous return leading to diminished stroke volume (SV) and cardiac output (Qi). To maintain blood pr...rns that gender differences in body mass and blood volume might interfere with interpretation of gender differences in the hemodynamic responses SV was normal...

Testosterone dose-repsonse relationships in healthy young men

... concentrations. - Muscle size: The thigh muscle volume and quadriceps muscle volume did not significantly change in men receiving the 25- or 50-mg doses but increased dose-dependently ...

Gender issues related to spaceflight: A NASA perspective

... by altering such variables as protein binding and volume of distribution of drugs, which could significantl...ceflight or bed rest. Regional decreases in muscle volume were similar in two men and two women after eight days of spaceflight. Some reports, however, indi...

Abstinence may make the brain grow stronger

... found that the abstinent alcoholics had a greater volume of white matter in their frontal lobes than curren...but not in other parts of the brain. White matter volume was greatest in those alcoholics who had been abstinent for the longest time. In addition, the amou...

Small, mountain rivers play big role in ocean sediment

...se small islands, because the volume of water they release into the oceans is correspondingly small," Carey said. "But the role of these islands in the ocean's geochemistry is important." Their collaborators included W. Berry ...

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