university of colorado – Shamskm: A site to exchange knowledge and solutions

Berkeley Lab Develops Nanoscope to Probe Chemistry on the Molecular Scale

By Guest PostJune 22, 2014Scienceatomic force microscopy, berkeley lab, bezahnten schildkroete, fourier transform, ftir, ganeshwaran mochida, gpt2, green party, hans bechtel, jill stein, lida xing, meteorites, michael martin, molecular scale, mouse neuron, new technique, oberen jura, ozan baytas neurological disease, proteins, qing ouyang, schildkroeten, sichuanchelys palatodentata, stardust, synchrotron infrared, university of colorado, walter joyce, wucaiwan, wuestenregion chinas

For years, scientists have had an itch they couldn’t scratch. Even with the best microscopes and spectrometers, it’s been difficult to study and identify molecules at the so-called mesoscale, a region of matter that ranges from 10 to 1000 nanometers in size. Now, with the help of broadband infrared light from the Advanced Light Source (ALS) synchrotron at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), researchers have developed a broadband imaging technique that looks inside this realm with unprecedented sensitivity and range.

By combining atomic force microscopy with infrared synchrotron light, researchers from Berkeley Lab and the University of Colorado have improved the spatial resolution of infrared spectroscopy by orders of magnitude, while simultaneously covering its full spectroscopic range, enabling the investigation of variety of nanoscale, mesoscale, and surface phenomena that were previously difficult to study. (more…)

JILA strontium atomic clock sets new records in both precision and stability

By Guest PostJanuary 26, 2014Scienceatom collision, boulder, cesium clocks, environmental heating, jila, jun ye, microwave, nist, optical lattice, precision, quantum logic clock, stability, strontium atomic clock, strontium lattice clock, true resonant frequency, university of colorado, ytterbium atomic clock

Heralding a new age of terrific timekeeping, a research group at JILA—a joint institute of the University of Colorado Boulder and the National Institute of Standards and Technology—has unveiled an experimental strontium atomic clock that has set new world records for both precision and stability.

The clock is in a laboratory at JILA, located on the CU-Boulder campus. (more…)

Slippery bark protects trees from pine beetle attack, according to CU-Boulder study

By Guest PostDecember 27, 2013Naturebeetle infestation, boulder, boulder county parks, california, ecology, evolutionary biology, functional ecology, high elevation, humboldt state university, indian peaks, jeffrey kane, jeffry mitton, john marr fund, limber pines, mountain pine beetles, oecologia, open space, pine beetle attack, protect, scott ferrenberg, slippery bark, trees, university of colorado, wilderness alliance

Trees with smoother bark are better at repelling attacks by mountain pine beetles, which have difficulty gripping the slippery surface, according to a new study by the University of Colorado Boulder.

The findings, published online in the journal Functional Ecology, may help land managers make decisions about which trees to cull and which to keep in order to best protect forested properties against pine beetle infestation. (more…)

Smartphone users value their privacy and are willing to pay for it, CU-Boulder economists find

By Guest PostDecember 22, 2013Technologyandroid, app, apps for iphone, atlanta, boulder, Chicago, denver, digital anonymity, donald m waldman, engine research foundation, kinds of privacy, online privacy, personal information, philadelphia, privacy, public policy, scott j savage, smartphone users, takashi hososhima, typical application, university of colorado, value, windows smartphone

Average smartphone users are willing to pay up to $5 extra for a typical application—or “app”—that won’t monitor their locations, contact lists and other personal information, a study conducted by two economists at the University of Colorado Boulder has found.

The researchers believe theirs is the first economic study to gauge the monetary value smartphone users place on privacy. That value is measured in consumers’ “willingness to pay” for five different kinds of digital anonymity. (more…)

New CU-Boulder-led study finds ‘microbial clock’ may help determine time of death

By Guest PostOctober 6, 2013Scienceaaron linne, active decay, bacterial change, biochemical change, body farm, boulder, chaminade university, crime scene investigation, david carter, determine, elife, eukaryotic expert, forensic scientist, forensic tool, grave soil, human decomposition facility, human microbiome, jessica metcalf, laura parfrey, max planck society, microbial clock, noah fierer, postmortem, rob knight, sibyl bucheli, time of death, university of colorado, wellcome trust fund

An intriguing study led by the University of Colorado Boulder may provide a powerful new tool in the quiver of forensic scientists attempting to determine the time of death in cases involving human corpses: a microbial clock.

The clock is essentially the lock-step succession of bacterial changes that occur postmortem as bodies move through the decay process. And while the researchers used mice for the new study, previous studies on the human microbiome – the estimated 100 trillion or so microbes that live on and in each of us – indicate there is good reason to believe similar microbial clocks are ticking away on human corpses, said Jessica Metcalf, a CU-Boulder postdoctoral researcher and first author on the study. (more…)

Today’s worst watershed stresses may become the new normal, study finds

By Guest PostSeptember 23, 2013Environmentboulder, cires, climate projection, demand for freshwater, ge sun, james meldrum, kristen averyt, noaa, peter caldwell, power plants, steve mcnulty, united states, university of colorado, us watersheds, watershed stresses, western water assessment

Nearly one in 10 U.S. watersheds is “stressed,” with demand for water exceeding natural supply, according to a new analysis of surface water in the United States. What’s more, the lowest water flow seasons of recent years—times of great stress on rivers, streams, and sectors that use their waters—are likely to become typical as climates continue to warm.

“By midcentury, we expect to see less reliable surface water supplies in several regions of the United States,” said the study’s lead author, Kristen Averyt, associate director for science at the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado Boulder. “This is likely to create growing challenges for agriculture, electrical suppliers and municipalities, as there may be more demand for water and less to go around.” (more…)

CU-Boulder team develops new water splitting technique that could produce hydrogen

By Guest PostAugust 3, 2013Sciencealan weimer, biological engineering, boulder, brian evanko, charles musgrave, christopher muhich, contraction, holy grail, hydrogen, hydrogen molecules, janna martinek, kayla weston, metal oxides, mirror system, new, oxygen, oxygen atoms, produce hydrogen, solar thermal reactor, solar thermal system, sunlight, sustainable hydrogen economy, thermal expansion, university of colorado, water splitting technique, xinhua liang

A University of Colorado Boulder team has developed a radically new technique that uses the power of sunlight to efficiently split water into its components of hydrogen and oxygen, paving the way for the broad use of hydrogen as a clean, green fuel.

The CU-Boulder team has devised a solar-thermal system in which sunlight could be concentrated by a vast array of mirrors onto a single point atop a central tower up to several hundred feet tall. The tower would gather heat generated by the mirror system to roughly 2,500 degrees Fahrenheit (1,350 Celsius), then deliver it into a reactor containing chemical compounds known as metal oxides, said CU-Boulder Professor Alan Weimer, research group leader. (more…)

Researchers shed light on MERS Coronavirus transmission

By Guest PostJuly 3, 2013Healthabdullah al rabeeah, al hasa, alimuddin zumla, canada, coronavirus transmission, epidemiology, genbank database, gene sequencing, kingdom, mers, mers coronavirus genomes, middle east, new outbreaks, paul kellam, respiratory syndrome, saudi arabia, sequencing technology, spread of virus, transmission of virus, uk, university of colorado, university of toronto, US, viral genome, ziad memish

Epidemiology and gene sequencing technologies have been used by researchers in the UK, the Kingdom of Saudi Arabia, the US and Canada to show that the novel Middle East Respiratory Syndrome (MERS) coronavirus can spread between people in healthcare settings. The work is published in the New England Journal of Medicine.

The scientists, from the Saudi Arabian Ministry of Health, UCL, Wellcome Trust Sanger Institute, University of Toronto, University of Colorado and Johns Hopkins University, rapidly investigated and defined the epidemiology, transmission dynamics and genetic composition of the MERS-CoV cluster of 22 cases of healthcare-acquired MERS coronavirus infections from a recent outbreak in Al-Hasa, Eastern Province, Kingdom of Saudi Arabia. (more…)

Tag Archives: university of colorado