Tag: "fluid" at biology news
New biosensor rapidly detects deadly foodborne pathogen
...entrations as low as 1,000 cells per milliliter of fluid
- an amount about the size of a pencil eraser. The sensor also is selective enough to recognize only the species monocytogenes. "The selectivity, sensitivity and rapidity of this sensor represent a vast improvement over the types of test kits that...
Protein protecting brain from toxins also blocks some chemotherapy from reaching tumors
...ter than normal levels in the brain tissue and the fluid
that surrounds the brain--the cerebrospinal fluid
(CSF). The finding strongly suggests that the natural role of Mrp4 is to block the passage of certai...
Study in Royal Society journals presents evidence for inherited factors in homosexuality
...by osmosis. Using a Molecular Dynamics simulation, fluid
molecules and a pore are modelled on a computer and set in motion according to the laws of dynamics. The results indicate that osmosis in such pores is a complex phenomenon involving both viscosity and diffusion, where the contribution of each is det...
Touching research: How white blood cells navigate
...k to surfaces. "Many people with an expertise in fluid
mechanics might go into the petroleum industry, or public works, or the food industry. Here we're using the same expertise to get a unique look into one of the most basic processes in our bodies," says Waugh. "This type of work takes a special breed ...
Flies have morning and evening clocks
..., governing such functions as sleeping and waking, fluid
balance, body temperature, cardiac output, and oxygen consumption. In the fruit fly Drosophila, however, the circadian clock has its most overt effect on the fly's level of activity. In both flies and humans, the clocks are circuits of neurons tha...
Biomedical engineers at case develop first sliver-sized sensor to monitor glucose levels
...on of glucose level for diabetics and other bodily fluid
levels with the help of simple color changes. Co...ons and metabolites in an astronaut's interstitial fluid
may make it easier and quicker for doctors to decide the best intervention and therapy. To date, no ...
Other highlights in the October 20 JNCI
...xate An injection of methotrexate into the spinal fluid
is used in some cancers to prevent the spread of t...ons of methotrexate in the patients' cerebrospinal fluid
decreased rapidly by 98%. All patients recovered completely from the intrathecal methotrexate overdo...
Latest buzz in research: Intoxicated honey bees may clue scientists into drunken human behavior
...of ethanol in the bees' hemolymph the circulatory fluid
of insects that's akin to blood. Not surprisingly, increasing ethanol consumption meant bees spent less time flying, walking and grooming, and more time upside down. The appearance of inebriation occured sooner for bees that were given a larger dose ...
OHSU scientists identify key gene that delays female puberty
...rom loss of motor coordination and alterations in fluid
balance," said Ojeda. "It will be important to continue observing these patients to determine whether they also witness a delay in the onset of puberty."...
Sexual competition drives evolution of a sex-related gene
...tudied semenogelin, a major protein in the seminal fluid
that controls the viscosity of semen immediately following ejaculation. In some species of primates, it allows semen to remain quite liquid after ejaculation, but in others, semenogelin molecules chemically crosslink with one another, increasing the ...
Oral saline spray may slash spread of exhaled pathogens
... 'low' producers of bioaerosols, small droplets of fluid
exhaled from the lungs that may carry airborne pathogens," says lead author David A. Edwards, Gordon McKay Professor of the Practice of Biomedical Engineering in Harvard's Division of Engineering and Applied Sciences. "Roughly half our subjects exhal...
Promising results in the battle against incurable ALS muscle disease
... of a small pump - directly into the cerebrospinal fluid
that circulates around the brain and the spinal cord) was quite effective. New hope for...
A global view of gene expression in the aging kidney
...edulla, which alters urine composition to maintain fluid
balance. Both deteriorate with age. Kim and colleagues then used DNA microarrays to determine the activity of every gene in all the kidney samples. Of 33,000 known human genes on the microarray, 985 showed age-related changes. Although ...
Purdue research offers hope for canine, human spinal injuries
...her can become one big cell if PEG is added to the fluid
they live in. Because of this surprising ability, PEG is sometimes called a "fusogen." About five years ago, Borgens and his partner, Riyi Shi, found that they could actually fuse hundreds to thousands of severed nerve fibers of the guinea p...
Combined stem cell-gene therapy approach seen as potential treatment for cystic fibrosis
...nfluences the level of airway surface liquid. This fluid
sits atop the airway cells and provides support for the hair-like projections called cilia that sweep mucus and dirt away from the cell. When the level of liquid is too low, as is the case in CF, mucus builds up and the area becomes an attractive env...
NJIT professor discovers new mixing method for microchip-sized labs
By alternating the flow of fluid
through tiny plastic pipes, a team of mechanical e...e applied to the electrodes that commonly pump the fluid
through a micro-channel. This publication follows other journal articles about similar research usin...
New painkiller was born in Utah
...d States in late January 2005. It is injected into fluid
surrounding the spinal cord by external or implanted pumps. "The commercial product, Prialt, is chemically identical to omega-MVIIA, except that it is made synthetically instead of by snails," Olivera says. McIntosh now directs research in the ...
Debunking constipation myths
...according to Dr. Mller-Lissner, and the success of fluid
treatment is probably none. Unless there is evide...ere is no data supporting the fact that increasing fluid
intake can successfully treat constipation. The article further addresses the myths behind chronic ...
Scientists find that the human nose is more complicated than a jumbo jet
...unning water or a special refractive-index-matched fluid
through the models they have been able to map the ...g, we want to know exactly what is happening." The fluid
dynamics of the nose is one of the most complex in the body, even more so than the flow of blood thr...
Researchers find how protein allows insects to detect and respond to pheromones
...ed by non-neuronal cells and are secreted into the fluid
bathing the dendrites, or nerve endings, of olfactory neurons. Dr. Smith's research group found that an OBP in fruit flies called LUSH is required for olfactory neurons to smell the pheromone 11-cis vaccenyl acetate, or VA. Mutant flies lacking the...
1 2 3 4 5 6 7 8 9 10