Tag: "pump" at biology news
High blood pressure, low energy -- a recipe for heart failure
...ood pressure, which makes the heart work harder to pump
blood. In the July issue of Cell Metabolism, Kelly... of heart failure when their hearts were forced to pump
against high pressure. The hearts of normal mice took that pressure overload in stride and stayed he...
Abnormal fat metabolism underlies heart problems in diabetic patients
...ificant problems with the mouse hearts' ability to pump
blood, again implicating altered lipid metabolism, cardiolipin scarcity and mitochondrial impairment in heart disease using lipid as predominant fuel. Gross adds that in addition to the effects on mitochondria, many of the membranes in heart cells, w...
Story tips from the US Department of Energy's Oak Ridge National Laboratory, August 2007
...ion. This hardened surface has been implemented in pump
impellers undergoing severe wear operation at the Sonoco paperboard plant in Newport, Tenn. The impellers in the plant are working at three times the life of regular impellers with an annual energy savings of 56 million BTUs. The funding source is DO...
Instant steam takes on MRSA
...y, a reaction chamber the size of a sugar cube can pump
steam at a rate of 7L/minute at temperatures up to 800 C. The first application is likely to be a GumBuster backpack for removing chewing gum from pavements and other surfaces. The patented GumBuster technology currently requires a minimum of 3kW ...
Research team discovers gallstone gene
...contains the instructions for building a molecular pump
which transports cholesterol from the liver into t...ed. The genetic modification appears to cause this pump
to work permanently at high speed. Gallstones are a common disorder: in Germany alone more than 170,...
Time-lapse recordings reveal why IVF embryos are more likely to develop into twins
...ry. These outer cells (the trophectoderm) begin to pump
fluid into the blastocoelic cavity where a micro-e...apses occur quite quickly far more quickly than a pump
could manage. The magnitude of the collapses is determined by the number of failed junctions. The gr...
WPI professor to represent American Mathematical Society at exhibition on science funding
...ngenital condition that leaves the heart unable to pump
sufficient oxygenated blood through the body. Tang's model, which takes into consideration blood flow and stress and strain on heart tissue and an implanted patch, appears to provide a better way to evaluate the success of the various surgical techni...
In nature, proteins sweep up nanoparticles
...aste particles into the environment, bacteria also pump
proteins into the environment. These proteins then sweep the sulfide nanoparticles out of solution into a ball. Scientists dont why this occurs. Perhaps its a serendipitous accident. Proteins and peptides could be released by bacteria after they di...
JCI table of contents: June 14, 2007
...heart is weakened, enlarged, and no longer able to pump
blood efficiently. In a study appearing online on June 14 in advance of publication in the July print issue of the Journal of Clinical Investigation, Naoki Mochizuki and colleagues from the National Cardiovascular Center Research Institute, Osaka, Ja...
Now, self-healing materials can mimic human skin, healing again and again
...student and lead author of the paper. While we can pump
more healing agent into the network, scar tissue builds up in the coating and prevents the healing agent from reaching the catalyst. In the current system, the healing process stops after seven healing cycles. This limitation might be overcome by imp...
Research finds evidence tropical cyclones have climate-control role
...nation for this. Cyclones and hurricanes appear to pump
warm water down and bring cold water to the surface. Mixing down buoyant, warm water lessens the density of the cold water and allows it to rise " The study did not examine deep ocean mixing, but it is reasonable to speculate that warm water pumped...
Study warns deep-sea mining may pose serious threat to fragile marine ecosystems
...y operated underwater mine cutters and a hydraulic pump
system to transfer roughly two million tons of ore per year to the surface. These strips would be located approximately 500 meters to two kilometres from the active vents, but Halfar argues that the cutting and pumping process will disgorge considera...
Study shows tight diabetes control does not impact cognitive ability in type 1 diabetes
... received intensive therapy with either an insulin pump
or three or more daily insulin injections. The remaining subjects received conventional therapy of one to two insulin injections daily. During the study, the patients' A1C readings, which reflect average blood glucose levels over several months, diff...
Catching cancer's spread by watching hemoglobin
...the hemoglobin after the excitation. Sometimes the pump
laser is off and there is no two-photon absorption. By subtracting the signal from the "off" state from the "on" state (when two-photon absorption occurs), the researchers remove unwanted scattered light from the data and can get high-quality signals...
Breathing easy: When it comes to oxygen, a bug's life is full of it
...rough holes in their bodies known as spiracles and pump
the oxygen through a system of increasingly tiny t...piracles. Insects also use different mechanisms to pump
the oxygen to the tissues. This system is much more efficient than the system that vertebrates evo...
Pump design could give new hope to heart patients
...e heart patients new hope A new counter-flow heart pump
being developed by Queensland University of Techno...subject of a patent application. "The counter-flow pump
is a bi-ventricular assist device (BVAD), meaning it supports both the left and right sides of the h...
Laser goes tubing for faster body-fluid tests
...t also makes it easy to move biofluids around. "We pump
a sample into the tube, pass some light through it...and send it along its way?and then were all set to pump
in the next one," said Berger....
NJIT professor obtains patent to uncover trace elements of airborne pollutants
...p. First our chip accumulates the pollutants as a pump
fills with air. Then, the chip directs the tiny heater to send a large enough sampling of pollutantsif they exist-- to the sensor's head. With a large sample, the sensor can recognize that pollutants exist." "A Microfabricated Microconcentr...
Targeting the adrenal gland could be key strategy against heart failure, Jefferson scientists show
...ut the hormone production that forces the heart to pump
too hard, leading to heart failure. Such a novel approach targeting the adrenal gland in addition to the heart provides a potential new strategy against heart failure, and could lead to a new class of drugs. The researchers, led by Walter Koch, P...
RIT researchers developing 'micropump' for hearing-loss treatments
...rapeutic agents that is not possible with existing pump
technologies" explains Borkholder, an expert in biomedical engineering and micoelectromechanical systems. The project is expected to provide a detailed understanding of acceptable dose and timing profiles for intracochlear drug delivery in mice wit...
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