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A Closer Look at the Perfect Fluid

By Guest PostJanuary 1, 2015ScienceBerkeley, big bang, density, elementary particles, hira peracha, mps, mps disorders, mucopolysaccharidosis, quark gluon plasma, quarks, ratio, shunji tomatsu, viscosity

Researchers at Berkeley Lab and their collaborators have honed a way to probe the quark-gluon plasma, the kind of matter that dominated the universe immediately after the big bang.

By combining data from two high-energy accelerators, nuclear scientists have refined the measurement of a remarkable property of exotic matter known as quark-gluon plasma. The findings reveal new aspects of the ultra-hot, “perfect fluid” that give clues to the state of the young universe just microseconds after the big bang. (more…)

Computer Simulation of Blood Vessel Growth

By Guest PostJanuary 27, 2014Science3d computer simulation, angiogenesis, bioengineer, blood capillaries, blood vessel, blood vessel growth, blood vessel structure, capillaries, clayton underwood, collagen matrix, collagen matrix density, computer simulation, density, extracellular matrix, growth, heart, james guilkey, james hoying, jell o collagen, ligaments, lowell edgar, matrix, mechanical role, network, oxygen supply, oxygenated blood vessel, professor jeff weiss, stiffness, tendons, tissues damage, tumor, university of utah, vessel formation

Early Step toward Treatment for Diseases that Affect Blood Flow

University of Utah bioengineers showed that tiny blood vessels grow better in the laboratory if the tissue surrounding them is less dense. Then the researchers created a computer simulation to predict such growth accurately – an early step toward treatments to provide blood supply to tissues damaged by diabetes and heart attacks and to skin grafts and implanted ligaments and tendons.

“Better understanding of the processes that regulate the growth of blood vessels puts us in a position ultimately to develop new treatments for diseases related to blood vessel growth,” and to better understand cancer metastasis, says bioengineering professor Jeff Weiss of the university’s Scientific Computing and Imaging Institute. (more…)

What Color is Your Night Light? It May Affect Your Mood

By Guest PostAugust 9, 2013Healthanabel galan, body, brain, celynn vaughn, circadian clock, color, dendritic spines, density, depressive like symptoms, ghassan daye, health hazards, hippocampus regions, iprgcs, light at night, mood disorders, night light, photosensitive cell, randy nelson, retina, salk institute, tracy bedrosian, your mood, zachary weil

Study Finds Red Light Least Harmful, While Blue Light is Worst

COLUMBUS, Ohio –– When it comes to some of the health hazards of light at night, a new study suggests that the color of the light can make a big difference.

In a study involving hamsters, researchers found that blue light had the worst effects on mood-related measures, followed closely by white light.

But hamsters exposed to red light at night had significantly less evidence of depressive-like symptoms and changes in the brain linked to depression, compared to those that experienced blue or white light. (more…)

Magma in Earth’s Mantle Forms Deeper Than Once Thought

By Guest PostJanuary 10, 2013Environmentananya mallik, anthony withers, brown university, carbon dioxide, carbonated rock, convection, crust, deeper magma, density, earth, earthquake, express lane, geologist, greg hirth, high pressure, jennifer wade, kyusei tsuno, magma, mantle, marc hirschmann, national science foundation, non carbonated rock, ocean floor, peridotite, rajdeep dasgupta, rice university, rock, seafloor, seismic wave, silicate rich mantle, temperature, university of minnesota, volcanic eruption, within the earth

Study simulating pressures in mantle beneath the ocean floor shows that rocks can melt at depths up to 250 kilometers

Magma forms far deeper than geologists previously thought, according to new research results.

A team led by geologist Rajdeep Dasgupta of Rice University put very small samples of peridotite, rock derived from Earth’s mantle, under high pressures in a laboratory.

The scientists found that the rock can and does liquify, at least in small amounts, at pressures equivalent to those found as deep as 250 kilometers down in the mantle beneath the ocean floor. (more…)

MSU Research Sheds New Light on Star Clusters, Black Holes

By Guest PostOctober 7, 2012Scienceanil seth, array telescope, astronomer, black hole, density, earth, Environment, Galaxy, globular cluster, gravitational dance, hubble, james miller jones, jay strader, laura chomiuk, light year, m22, messier 22, michigan, Milky Way, new mexico, radio observation, radio wavelength, research, space telescope, star, star cluster, state university, thomas maccarone, university, utah, very large, xray

EAST LANSING, Mich. — Research by Michigan State University astronomers has scientists re-thinking the fates of black holes, particularly in groups of stars known as globular clusters.

The research of Jay Strader, MSU assistant professor of physics and astronomy, and colleagues focused on a cluster called Messier 22, or M22, a collection of hundreds of thousands of stars located about 10,000 light years from Earth. Using images of unprecedented depth observed at radio wavelengths, Strader and his team were surprised to find not one but two black holes in the cluster. (more…)

Not Your Parents’ Chem Labs

By Guest PostApril 25, 2012Educationacetone, anti-inflammatory, balance, benzene, borneol, carbon dioxide, carbon trachloride, catalyst, chalcone, chemical industry, chemistry, cloves, cookbook chemistry, cylindrical container, deane morrison, density, environmental problem, extract, fluid, general chemistry labs, graduated cylinder, grams per milliliter, greener, hazardous, industry, inorganic chemistry, james wollack, jane wissinger, josh jansen, lindsay nevalainen, liquid, marc hillmyer, michelle driessen, molecule, oil, organic chem, organic molecule, plastic, renewable resources, scale, sodium bromide, solution, solvent, university of minnesota, volume

‘Greener’ and more engaging experiments draw students in

As a college student, Michelle Driessen had an all-too-typical experience.

“I hated general chemistry,” she says. “I thought it was terribly boring.”

She had plenty of company. Experiments were all laid out in advance, and the goal seemed to be to get to a predetermined result without blowing up the glassware.

In the old days, “very few students appreciated the point of most general chemistry labs,” adds Driessen. “With cookbook chemistry, you couldn’t have anything go wrong or deviate [from what’s supposed to happen], but I find those things to be the most interesting part of science.” (more…)

Ants’ Ecosystem Role is ‘Key’

By Guest PostFebruary 4, 2011Natureant workers, ants, black garden ants, collembola, common red ants, density, dirk sanders, diversity, ecosystem engineers, Environment, Europe, food chain, frank van veen, grassland food web, lasius niger, myrmica rubra, nest building activity, nutrients, positive influence, predation, predators, sermany, soil, soil nutrient, uk, university of exeter

Research by the University of Exeter has revealed that ants have a big impact on their local environment as a result of their activity as ‘ecosystem engineers’ and predators.

The study, published in the Journal of Animal Ecology, found that ants have two distinct effects on their local environment. (more…)

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