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Mug Handles Could Help Hot Plasma Give Lower-Cost, Controllable Fusion Energy

By Guest PostOctober 12, 2012Scienceaaron hossack, association, asymmetric current, atomic energy, atoms, brian nelson, brian victor, chris hansen, cihan ackay, coffee mug, core, david ennis, efficient alternative, electromagnetic waves, energy source, equilibrium, france, fusion power, fusion reactor, george marklin, helicity injection, high frequency, hydrogen ions, international, kyle morgan, magnetic bottle, magnetic fields, nathaniel hicks, nuclear fission, nuclear power, plasma, prototype, radioactive waste, reactor, roger smith, san diego, shutdown, thomas jarboe, university, Washington

Researchers around the world are working on an efficient, reliable way to contain the plasma used in fusion reactors, potentially bringing down the cost of this promising but technically elusive energy source. A new finding from the University of Washington could help contain and stabilize the plasma using as little as 1 percent of the energy required by current methods.

“All of a sudden the current energy goes from being almost too much to almost negligible,” said lead author Thomas Jarboe, a UW professor of aeronautics and astronautics. He presents the findings this week at the International Atomic Energy Association’s 24^th annual Fusion Energy Conference in San Diego. (more…)

Tiny Cloud Droplets

By Guest PostOctober 12, 2012Sciencebulk buoyancy, climate, cloud droplets, cloud microphysics, cloud turbulence, computational research, delaware, dynamics, fine scale, fluid mechanic, formation, global climate, global scales, inertial effect, inertial particle, instrumentation, lian ping wang, ncar, parameterization, rain formation, regional, regional weather, sedimentation, simulation, tiny, tool, university, water cycle, water droplets, weather, wojciech grabowski

UD’s Wang contributes invited paper on cloud microphysics

Lian-Ping Wang, professor of mechanical engineering and joint professor of physical ocean science and engineering at the University of Delaware, recently published an invited critical review paper in the 2013 volume of the Annual Review of Fluid Mechanics, a high impact journal for the fluid mechanics community.

Co-authored with Wojciech Grabowski, a senior scientist from the National Center for Atmospheric Research (NCAR), the paper, titled “Growth of Cloud Droplets in a Turbulent Environment,” addresses a classic cloud physics problem of how cloud turbulence affects the growth of tiny cloud droplets. (more…)

Interstellar Travelers of the Future May be Helped by MU Physicist’s Calculations

By Guest PostOctober 12, 2012Scienceastrophysicists, bill clinton, expansion, future, gravity, heat, human expansion, interstellar travel, light, mechanical explanation, missouri, movement, newtonian law, photon, physics, pioneer spacecraft, puzzle, radio wave, research project, researcher, sergei kopeikin, Space, spaceship symposium, star system, theory, time, universe, university

University of Missouri’s Sergei Kopeikin may have solved the Pioneer anomaly

COLUMBIA, Mo. – Former President Bill Clinton recently expressed his support for interstellar travel at the 100 Year Spaceship Symposium, an international event advocating for human expansion into other star systems. Interstellar travel will depend upon extremely precise measurements of every factor involved in the mission. The knowledge of those factors may be improved by the solution a University of Missouri researcher found to a puzzle that has stumped astrophysicists for decades.

“The Pioneer spacecraft, two probes launched into space in the early 70s, seemed to violate the Newtonian law of gravity by decelerating anomalously as they traveled, but there was nothing in physics to explain why this happened,” said Sergei Kopeikin, professor of physics and astronomy in MU’s College of Arts and Science. “My study suggests that this so-called Pioneer anomaly was not anything strange. The confusion can be explained by the effect of the expansion of the universe on the movement of photons that make up light and radio waves.” (more…)

Bounce, Skid, Wobble: How Huygens Landed on Titan

By Guest PostOctober 11, 2012Science17th century, analysis, astronomer, cassini spacecraft, christiaan huygens, direction, dutch, earth, erich karkoschka, european, evaporate, friction, hazy atmosphere, horizon, huygens data, huygens impact, huygens probe, institute, lower atmosphere, max planck, methane, model, moon, moon surface, motion, mud like, NASA, nicolas altobelli, organic aerosols, ralph lorenz, saturn, space agency, splat, stefan schroder, substance, titan, titan atmosphere, undisturbed terrain

Piecing together the events of the farthest touchdown a manmade spacecraft has ever made on an alien world reveals new clues about Titan’s surface and helps plan future missions to moons and planets.

The Huygens probe, ferried to Saturn’s moon Titan by NASA’s Cassini spacecraft, bounced, slid and wobbled its way to rest in the 10 seconds after touching down on Titan in January 2005, a new analysis reveals. The moon’s surface is more complex than previously thought.

Scientists reconstructed the chain of events by analyzing data from a variety of instruments that were active during the impact, in particular changes in the acceleration experienced by the probe. The probe was supplied by the European Space Agency and named after the Dutch 17th century astronomer Christiaan Huygens. (more…)

Nearby Super-Earth Likely a Diamond Planet

By Guest PostOctober 11, 2012Scienceconstellation of cancer, diamond planet, habitable world, super earth

New research led by Yale University scientists suggests that a rocky planet twice Earth’s size orbiting a nearby star is a diamond planet. (more…)

Cambrian Fossil Pushes Back Evolution of Complex Brains

By Guest PostOctober 10, 2012Nature, Scienceancient animal, arachnids, arizona, arthropods, brain anatomy, branchiopod brain, branchiopods, brine shrimp, cambrian fossil, cambrian period, China, common ancestor, complex brain, course, crustaceans, dna sequence, evolution, evolutionary biologist, fuxianhuia protensa, gregory edgecombe, hypothesis, insects, malacostracans, microscope, missing link, modern brain, modern malacostracan, molecular data, morphology, mudstone, multicellular animals, Nature, neural anatomy, neurobiologist, neurocladistics, neuropils, nicholas strausfeld, optic lobes, origin, sensory organ, species, taxonomic group, transformative discovery, university, xianguang hou, xiaoya ma, yunnan province, yunnan university. kunming

Complex brains evolved much earlier than previously thought, as evidenced by a 520-million-year-old fossilized arthropod with remarkably well-preserved brain structures.

The remarkably well-preserved fossil of an extinct arthropod shows that anatomically complex brains evolved earlier than previously thought and have changed little over the course of evolution. According to University of Arizona neurobiologist Nicholas Strausfeld, who co-authored the study describing the specimen, the fossil is the earliest known to show a brain.

The discovery will be published in the Oct. 11 issue of the journal Nature. (more…)

Amazonian Tribal Warfare Sheds Light on Modern Violence, Says MU Anthropologist

By Guest PostOctober 10, 2012Culture, Scienceafghanistan, altercation, Amazon, amazon forest, amazonian, amazonian warfare, anthropologist, cause, christianity, civilization, clash, cultural factor, cultural identity, culture influence, deadly attack, death, drew bailey, european contact, europeans, evolutionary history, external raid, frequency, global goal, humans, instinctual motivation, intensity, internal raid, intertribal warfare, libya, missouri, modern gang, mortality, primate ancestor, rival group, river basin, robert walker, south america, tribal life, tribal society, university, us embassy, violence, violent conflict, war, was treachery

Developing a shared sense of global community could help reduce major episodes of violence

In the tribal societies of the Amazon forest, violent conflict accounted for 30 percent of all deaths before contact with Europeans, according to a recent study by University of Missouri anthropologist Robert Walker. Understanding the reasons behind those altercations in the Amazon sheds light on the instinctual motivations that continue to drive human groups to violence, as well as the ways culture influences the intensity and frequency of violence.

“The same reasons – revenge, honor, territory and jealousy over women – that fueled deadly conflicts in the Amazon continue to drive violence in today’s world,” said Walker, lead author and assistant professor of anthropology in MU’s College of Arts and Science. “Humans’ evolutionary history of violent conflict among rival groups goes back to our primate ancestors. It takes a great deal of social training and institutional control to resist our instincts and solve disputes with words instead of weapons. Fortunately, people have developed ways to channel those instincts away from actual deadly conflict. For example, sports and video games often involve the same impulses to defeat a rival group.” (more…)

A Welcome Predictability

By Guest PostOctober 9, 2012Sciencedegree of predictability, predictable engineering, synthetic biology, synthetic circuits, transcriptional elongation, transcriptional regulators

Berkeley Lab Researchers Develop New Tool for Making Genetic Engineering of Microbial Circuits Reliably Predictable

Synthetic biology is the latest and most advanced phase of genetic engineering, holding great promise for helping to solve some of the world’s most intractable problems, including the sustainable production of energy fuels and critical medical drugs, and the safe removal of toxic and radioactive waste from the environment. However, for synthetic biology to reach its promise, the design and construction of biological systems must be as predictable as the assembly of computer hardware. (more…)

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