Mayo Clinic researchers have discovered a gene responsible for the onset of aging, including age-related disorders such as infertility, reproductive problems and cataracts. This research, conducted in genetically modified mice, is promising in helping physicians understand and treat the same disorders in humans. The findings appear in the July issue of the journal Nature Genetics. [Baker, D.J. et al. (2004). Nat. Genet. 36, 744-749.
The discoveries came as the result of general investigations into possible genetic causes of cancer. In this case, it was discovered that this particular gene, called BubR1, governs production of a protein that modulates physical aging. The mice studied lacked normal levels of that protein and began to age prematurely.
“Darren Baker in our laboratory found that mutant mice with low amounts of BubR1 protein live five times shorter than normal mice. They also develop a variety of age-related disorders at a very young age,” says lead investigator Jan van Deursen, Ph.D., of the Mayo Clinic Departments of Pediatric and Adolescent Medicine, and Biochemistry and Molecular Biology.
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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