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Yale Engineers Invent Novel Way to Sort Microparticles – By Size

By Guest PostNovember 18, 2011Scienceayse rezzan kose, complex fluids based on size, concentrating synthetic microscopic, diagnostic, eric gershon, ferro-microfluidic cytometer, high-throughput cytometers, highly efficient technique for separating, hur koser, isolating rare liquid-borne pathogens, magnetic nanoparticles, microparticles into separate, monitoring tumor cells in bloodstreams, next-generation nanocytometer, pharmaceutical applications, rapidly assessing blood cell counts, rapidly isolate, rare bacteria for environmental testing, significant clinical, sorting, yale university

Engineers at Yale University have developed a new, highly efficient technique for separating, sorting, and concentrating synthetic microscopic particles within complex fluids based on size.

The new technique suggests the possibility of significant clinical, diagnostic, and pharmaceutical applications, such as isolating rare liquid-borne pathogens, monitoring tumor cells in bloodstreams, and rapidly assessing blood cell counts, for example. (more…)

Battle between the Placenta and Uterus could Help Explain Preeclampsia

By Guest PostOctober 12, 2011Sciencebaby’s placenta, brews in the mother’s womb, cure for preeclampsia, disease of pregnancy, dr. harvey j. kliman, father’s biological goal, lymphocytes, mother during pregnancy, mother’s uterus, online issue of reproductive sciences, preeclampsia, protein 13, trophoblasts, yale school of medicine, yale university

A battle that brews in the mother’s womb between the father’s biological goal to produce the biggest, healthiest baby possible vs. the mother’s need to live through delivery might help explain preeclampsia, an often deadly disease of pregnancy. The fetus must be big enough to thrive, yet small enough to pass through the birth canal. In a new study, Yale researchers describe the mechanism that keeps these conflicting goals in balance. (more…)

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‘Back-up system’ Reduces Heart Disease Deaths

By Guest PostOctober 3, 2011Health, Scienceback up system, blood vessels, bypass vessels, christian seiler, clotted coronary artery, coronary artery disease, coronary collaterals, counterpulsation, g csf, growth factor, heart disease, heart main arteries, pascal meier, patients with a heart attack, role of natural bypass vessels, university of bern, yale university

Small bypass vessels which act as a ‘back-up system’ for the heart’s main arteries play a significant role in reducing the mortality of patients with coronary artery disease, according to new research. (more…)

Primitive Birds Shared Dinosaurs’ Fate

By Guest PostSeptember 25, 2011Sciencearchaic birds, bird fossils, chicxulub meteorite, cretaceous bird, cretaceous period, dinosaurs 65 million years ago, fossil birds, nicholas longrich, team of paleontologists, yale university

A new study puts an end to the longstanding debate about how archaic birds went extinct, suggesting they were virtually wiped out by the same meteorite impact that put an end to dinosaurs 65 million years ago.

For decades, scientists have debated whether birds from the Cretaceous period — which are very different from today’s modern bird species — died out slowly or were killed suddenly by the Chicxulub meteorite. The uncertainty was due in part to the fact that very few fossil birds from the end of this era have been discovered. (more…)

To Ditch Dessert, Feed the Brain

By Guest PostSeptember 22, 2011Sciencebrain, brain imaging scans, fmri scans, glucose, glucose levels, high calorie food, hypothalamus, kathleen page, low calorie food, prefrontal cortex, rajita sinha, regulating impulses, striatum, twinkies, yale university

If the brain goes hungry, Twinkies look a lot better, a study led by researchers at Yale University and the University of Southern California has found.

Brain imaging scans show that when glucose levels drop, an area of the brain known to regulate emotions and impulses loses the ability to dampen desire for high-calorie food, according to the study published online September 19 in The Journal of Clinical Investigation. (more…)

New Zealand Mountain Named in Honor of Yale Astronomer

By Guest PostJune 21, 2011Sciencea mountain named after tinsley, aaron nicholson, american astronomical society, beatrice tinsley, fiordland, galaxy evolution, german astronomer johannes kepler, greatest woman scientist of the 20th century, james gunn, kepler mountains, mount tinsley, new zealand, new zealand geographic board, southern new zealand, southland times, star populations, the royal astronomical society of new zealand, tinsley mountains, world atlas, world leader in modern cosmology and one of the most creative and significant theoreticians in modern astronomy, yale astronomer beatrice tinsley, yale university

Acclaimed by her peers in the United States as “possibly the greatest woman scientist of the 20th century” and known in her native New Zealand as a “world leader in modern cosmology and one of the most creative and significant theoreticians in modern astronomy,” the late Yale astronomer Beatrice Tinsley has certainly earned a place in the annals of history.

Now she’s earned a place in the World Atlas as well. (more…)

X-Ray Telescope Finds New Voracious Black Holes in Early Universe

By Guest PostJune 17, 2011Sciencebig bang, black holes, cdfs, chandra, chandra deep field south, chandra x ray observatory, cosmic dawn, cosmic fog, early universe, eric gawiser, ezequiel treister, galaxies, giant black holes, Hubble Space Telescope, kevin schawinski, marta volonteri, massive black holes, NASA, neutral hydrogen, new jersey, optical and infrared images, photons, physics, priya natarajan, quasars, reionization, Rutgers University, supermassive black holes, university of hawaii, university of michigan, x ray image, yale university, young black holes

ANN ARBOR, Mich.— Using the deepest X-ray image ever taken, a University of Michigan astronomer and her colleagues have found the first direct evidence that massive black holes were common in the early universe. This discovery from NASA’s Chandra X-ray Observatory shows that very young black holes grew more aggressively than previously thought, in tandem with the growth of their host galaxies.

By pointing Chandra at a patch of sky for over six weeks, astronomers obtained what is known as the Chandra Deep Field South (CDFS). When combined with very deep optical and infrared images from NASA’s Hubble Space Telescope, the new Chandra data allowed astronomers to search for black holes in 200 distant galaxies, from when the universe was between about 800 million and 950 million years old. (more…)

Sun Safety: Facts about Skin Cancer and Tips on Preventing It

By Guest PostJune 3, 2011Healthbaseball cap, be sun smart, block ultraviolet (uv), broad-brim hat, crawl under a rock, dr. david leffell, good sun protection, head and neck, helen dodson, hide in the basement, kids ball games, melanoma, physicians of yale, prison uniform, radiation from skin, save your life, skin cancer prevention, squamous cell cancer, sun protective eyeglasses, sun-protective cloth, ultraviolet protective factor-rated, use of sunscreen, yale cancer center, yale medical group, yale university

With summer upon us, Yale Medical Group physicians have an urgent warning: Be sun smart. Practicing good sun protection, including the use of sunscreen, could save your life, they say.

“You don’t want to go crawl under a rock or hide in the basement,” says dermatologist Dr. David Leffell, CEO of Yale Medical Group and a member of Yale Cancer Center. “You want to be active and that usually is best done outdoors — simply use moderation and common sense.” (more…)

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