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Herschel Finds Oceans of Water in Disk of Nearby Star

By Guest PostOctober 22, 2011Scienceastronomers, cold water vapor, constellation hydra, european space agency, herschel space observatory, heterodyne instrument for the far-infrared, hifi, icy comets, jet propulsion laboratory, leiden observatory, michiel hogerheijde, NASA, paul goldsmith, planets like earth, the netherlands, tw hydrae, universe, waterlogged disk, young star

PASADENA, Calif. — Using data from the Herschel Space Observatory, astronomers have detected for the first time cold water vapor enveloping a dusty disk around a young star. The findings suggest that this disk, which is poised to develop into a solar system, contains great quantities of water, suggesting that water-covered planets like Earth may be common in the universe. Herschel is a European Space Agency mission with important NASA contributions.

Scientists previously found warm water vapor in planet-forming disks close to a central star. Evidence for vast quantities of water extending out into the cooler, far reaches of disks where comets take shape had not been seen until now. The more water available in disks for icy comets to form, the greater the chances that large amounts eventually will reach new planets through impacts. (more…)

Relationships More Important than Genetic Ties When Deciding Who Cares for Aging Family Members, MU Researchers Say

By Guest PostOctober 22, 2011Scienceamerica, americans, divorce and remarriage, elderly population, genetic ties, hypothetical caregiving scenarios, Japan, kyoto, lawrence ganong, marilyn coleman, pew research report, university of missouri

*Divorce and remarriage affect beliefs about who should care for elder relatives*

COLUMBIA, Mo. – America’s elderly population will nearly double by 2050, according to a Pew Research report. As baby boomers enter retirement, concern exists as to who will care for them as they age. Traditionally, children have accepted the caregiving responsibilities, but those caregiving roles are becoming blurred as more families are affected by divorce and remarriage than in previous decades. Now, University of Missouri researchers have found that relationship quality trumps genetic ties when determining caregiving obligations.

Lawrence Ganong, a professor and co-chair in the MU Department of Human Development and Family Studies in the College of Human Environmental Sciences (HES), studied how divorce and remarriage affect beliefs about who should care for aging relatives. He found that relationship quality, a history of mutual help, and resource availability influence decisions about who cares for parents and stepparents. (more…)

Researchers Do Precise Gene Therapy Without A Needle

By Guest PostOctober 21, 2011Health, Scienceandrew morss, anti cancer gene, billionth of a meter, brian henslee, cell, early cancer detection and treatment, electrical pulses, fluorescent molecules, gene therapy, genetic pathways, gold coated dna strands, human cells, l james lee, leukemia cells, lung cancer, nanochannel electroporation, nanometer, nanometer sized channels, needle, nep, ohio state university, polymer stamps, polymeric device, pouyan boukany, reservoir of therapeutic agent, scale channel, therapeutic biomolecules, tumors, wei ching liao

COLUMBUS, Ohio – For the first time, researchers have found a way to inject a precise dose of a gene therapy agent directly into a single living cell without a needle.

The technique uses electricity to “shoot” bits of therapeutic biomolecules through a tiny channel and into a cell in a fraction of a second.

L. James Lee and his colleagues at Ohio State University describe the technique in the online edition of the journal Nature Nanotechnology, where they report successfully inserting specific doses of an anti-cancer gene into individual leukemia cells to kill them. (more…)

Diamonds, Silver and the Quest for Single Photons

By Guest PostOctober 21, 2011Scienceatomic impurities, atomic scale, crystal lattice, diamond microchips, nitrogen vacancy, quantum computing

Tiny crystal towers enlighten understanding of photon emission, could inspire diamond microchips for quantum computing

Building on earlier work, scientists and engineers recently developed a manufacturing process that allows them to craft an assortment of miniature, silver-plated-diamond posts that enable greater control of light producing photons at the atomic scale. The research could prove important for future generations of quantum computers. (more…)

Suggested Explanation for Glowing Seas–Including Currently Glowing California Seas

By Guest PostOctober 20, 2011Environment, Scienceabundance of protons, bioluminescence, blue flashes, california waters, channels in membranes, coastal california waters, dinoflagellates, electrical events, electrical impulses, Environment, j woodland hastings, luciferase, marine environments, mechanical stimulation, organism, potential mechanism for bioluminescence, produce toxins, protein, scintillons, unicellular plankton, vacuole, voltage gated proton channels

*Potential mechanism for dazzling blue flashes of light in oceans identified*

It has long been known that spectacular blue flashes–a type of bioluminescence–that are visible at night in some marine environments (currently including coastal California waters) are caused by tiny, unicellular plankton known as dinoflagellates. However, a new study has, for the first time, detailed the potential mechanism for this bioluminescence.

The study, which was partially funded by the National Science Foundation, is reported by Susan Smith of Emory School of Medicine, Thomas DeCoursey of Rush University Medical Center and colleagues in the Oct. 17, 2011 issue of the Proceedings of the National Academy of Sciences (PNAS). (more…)

NASA’s Spitzer Detects Comet Storm in Nearby Solar System

By Guest PostOctober 20, 2011Sciencealien solar system, almahata sitta meteorite, bright star in the northern sky, carey lisse, comets, dark seas, earth, Epoch, eta corvi, hailstorm, kuiper belt, late heavy bombardment, man in the moon, maria, NASA, solar system, spitzer space telescope

PASADENA, Calif. — NASA’s Spitzer Space Telescope has detected signs of icy bodies raining down in an alien solar system. The downpour resembles our own solar system several billion years ago during a period known as the “Late Heavy Bombardment,” which may have brought water and other life-forming ingredients to Earth.

During this epoch, comets and other frosty objects that were flung from the outer solar system pummeled the inner planets. The barrage scarred our moon and produced large amounts of dust. (more…)

New Research Links Common RNA Modification to Obesity

By Guest PostOctober 19, 2011Health, Scienceadenosine, anti obesity therapies, biochemical dynamic equilibrium, biological regulation, chemistry professor, Chicago, China, chuan he, deoxyribonucleic acid, dna in human cells, dna or rna methylation, England, epigenetics of dna, fto gene, genetic regulatory process, histones, human energy homeostasis, human rna modification, messenger rna metabolism, methyl group, methylation, n6 methyladenosine, nucleic acids, obesity, proteins, ribonucleic acid, rna epigenetics, rna modification, stephen orahilly, type ii diabetes, university of chicago

An international research team has discovered that a pervasive human RNA modification provides the physiological underpinning of the genetic regulatory process that contributes to obesity and type II diabetes.

European researchers showed in 2007 that the FTO gene was the major gene associated with obesity and type II diabetes, but the details of its physiological and cellular functioning remained unknown. (more…)

New Method helps Researchers Zero in on Drugs that can kill Brain Cancer Stem Cells

By Guest PostOctober 17, 2011Health, Sciencebiobehavioral sciences, brain cancer, brain tumors, dr. harley kornblum, glioblastoma, identify chemical compounds, jonsson cancer center, kill the stem cells, malignancies, molecular cancer therapeutics, new cancer drugs, new screening approach, seven chemical libraries, treatment-resistant, tumor cells, typical screening, ucla's jonsson comprehensive cancer center, university of california

Researchers with UCLA’s Jonsson Comprehensive Cancer Center have developed a new screening approach to identify chemical compounds that can target and kill the stem cells responsible for creating deadly brain tumors.

Glioblastoma is one of the deadliest malignancies, typically killing patients within 12 to 18 months. These brain cancers consist of two kinds of cells: a larger, heterogeneous population of tumor cells and a smaller sub-population of stem cells, which are treatment-resistant. (more…)

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