National Science Foundation Awards Knowledge And Distributed Intelligence Grants
...rough microscopic pores in the rock. Modeling the flow requires enormous range of scales: from a fraction...over, different physical processes that affect the flow occur simultaneously in different parts of the reservoir.The investigators will study how small-scal...Changes In Care Lower Costs Of Surgery To Prevent Stroke
... to the brain. These obstructions can block blood flow to thebrain, causing a stroke. "Our data clearly indicate that carotid endarterectomy is becoming less costlywithout becoming inefficient or compromising the quality of patient care, as isproven by the decrease in complications associated with stroke...How Ritalin Enhances Memory: Clues Provided By Brain Scans of ADHD Patients Using The Drug
...esearchers noted from the scansthat cerebral blood flow was dysfunctional in the ADHD patients - that areas oftheir brains were over active in some areas and underactive in others during thetask. Task-related neural activity among men with ADHD was not noted in thefrontal region, an area traditionally as...Pairing Two Drugs With Angioplasty May Offer Best Success In Treating Heart Attacks
...reteplase 30 minutes apart provided complete blood flow toup to 35 percent more patients than using abcixi...gnificantly less effective in restoring full blood flow (46 percentof patients), compared with using the right dose of a clot-buster and a "superaspirin" (6...This Week's Forecast May Be A Heart Attack
... likely, he says. A heart attackoccurs when blood flow to the heart is blocked by clots or fatty plaque depositsin blood vessels. Previous studies have linked changes in atmospheric pressure to an increase inthe likelihood of a hemorrhagic stroke, one that is caused by bleeding in thebrain, says Amouyel....UCSF Study Finds DHEA Benefits Cardiovascular Function
...the tone of coronary arteries and regulating blood flow to the heart and otherparts of the body, Zellner s...elevated the heart's vesselsconstrict, meaning the flow of blood is hampered and the heart's tissue does notget the oxygen and nutrients it needs to perform...Setbacks To Health Progress In Central America
...nt of humanitarian supplies, is helping manage the flow ofsupplies efficiently and transparently, with accountability and tracking, shesaid. Hurricane Mitch has been a hard blow, according to Dr. Roses. Intangibleinvestments such as sectoral analyses carried out over a year or more toidentify opportunit...Now Is Time To Design Brain-Saving Drugs Specifically For Children, UCSF Neurologist Says
...ewborn is accidentally deprived of oxygenand blood flow during birth. The scientists are spurred partly by the history of adult drugs used on children-- some are ineffective, some have unexpected results, some even cause theopposite effect that they have in adults. But Ferriero says the most compellingr..."Super" Aspirin Does Super Job In Fighting Heart Attacks
...hat uses a balloon-tippedcatheter to restore blood flow in the blood vessel. The researchers investigated ...angioplasty or bypass surgery, whichreroutes blood flow around a blocked blood vessel. The researchers examined thedrugs' effectiveness at three intervals:...MIT Microchip Releases Chemicals On Demand
... structure(the cathode), which causes a current to flow between the two. The cathoderemains intact during this process, but the anode dissolves due to anelectrochemical reaction between it and the salt solution it is bathed in. (Mr.Santini notes that the team has ideas for future versions of the chip that...Routine Use Of Coronary Stents Found To Yield Better Outcomes, Be More Cost-Effective
...al plaque and enlarge the blood vessel soblood can flow more easily. The balloon is then deflated and the catheters arewithdrawn. Forty-four participating centers in the U.S. and Canada randomly allocatedpatients for either stent implantation or initial balloon angioplasty followedby stents only when nec...Member Of The "Coasters" Making A Real-Life Comeback After Experiencing An Aneurysm Two Years Ago
...ny balloon) had already ruptured,allowing blood to flow into the brain. Such hemorrhaging often leads topa...h a titanium clip, depriving the aneurysm of blood flow and preventing itfrom hemorrhaging. Following these procedures, Richards started the long process of...Heart Valve Abnormalities Examined In Relation To Duration Of Diet Drug Use
...in the controlgroup. The mitral valve controls the flow of blood between the left atrium,where blood is received from the lungs, and the left ventricle, the pumpingchamber. While Ryan considers the study the most definitive to date, he notedthat it had to rely on retrospectively collected ...Stent Procedures May Be Unnecessary In Some Heart Cases
...shing the blockingplaque aside and restoring blood flow to the heart. Stents are mesh tubes usedto hold arteries open after angioplasty. The Duke study pooled the results of seven different angioplasty trialsand looked at more than 5,000 angioplasty patients. The researchers found thatapproximately 8 pe...MRI Images Using Laser-Polarized Xenon
...r-polarized xenon to track regional cerebral blood flow through the brain." According to Chupp, future U-M research will focus on finding ways to increasexenon polarization from current levels of about 5 percent to 35 percent, whichwill provide the resolution required for clinical applications. Funding fo...'Motion Blindness,' Not Just Poor Memory, Causes Alzheimer's Patients To Lose Their Way
...to test patients' abilitiesto interpret the "optic flow field," the scientific term for themotion one sees... Of the 11, only six did poorlyanalyzing the optic flow field, and they also had the mostdifficult time remembering the way to the laboratory. Duffythinks t...Improved Ritalin™ Offers Smaller Doses And Fewer Side Effects
...hat area of the brain, withoutinhibiting thenormal flow of dopamine, an important chemical neurotransmitter vital to theproper functioning of the central nervous system. "We have just developed the most potent compounds known in theliterature, which have a ten to one selectivity for inhibiting cocain...Penn Researchers Find Chemoembolization Effective For Liver Tumors
...l as a large portal veinthat furnishes ample blood flow on its own. The chemoembolization procedure is approximately three hours inlength, and involves an overnight hospital stay. It is performedrepeatedly on a monthly basis, with an average treatment regimenof approximately three sessions. "With chemoe......orexample, in a healthy young child with good tear flow is probably less than itis in a 60- or 70-year-old adult with decreased tear flow. Personal hygiene isgenerally going to be a little bit better, too. So we felt that in terms ofserious complications -- and the only really serious one would be getting...