Young stars ejecting plasma could give us clues into the Sun’s past Kyoto, Japan — Down here on Earth we don’t usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are called coronal mass ejections (CMEs). They often occur together with sudden brightenings called flares, and sometimes extend far enough to disturb Earth’s magnetosphere, generating space weather phenomena including auroras or geomagnetic storms, and even damaging power grids on occasion. Scientists believe that when…
The places where the generation of energy from wind, solar or hydro would be most economically competitive are often located in remote areas (offshore wind for…
Researchers at the University of Bremen have developed a simple method for producing zinc oxide (ZnO) nan-owires. The ZnO nanowires provide the basis for a new generation of environmentally friendly LEDs with im-proved properties.
A simple way of describing this production method would be as a baking recipe: salts and water are mixed, put into a pressure tank and placed in an oven for several hours.
By altering the temperature during the production process, different conductivities (n- and p-conducting) can be embossed to the individual nanowires and different light spectra can be defined by combining them with each other.
The production of conventional LEDs based on gallium compounds is harmful to health and calls for huge technical effort.
Zinc oxide can be produced in large quantities in an easy, cost-effective and environmentally friendly manner. It comprises efficient light-matter interaction and is transparent across almost the entire spectral range. The new LEDs have the innate potential to produce white light. Emissions in the UV range are also possible.
A prototype of the ZnO nanowire LED has been tested successfully in the laboratory. A development or cooperation partner is now being sought.
There is no satisfactory therapy to prevent the loss of synapses, axons or neurons in neurodegenerative diseases, such as age-related macular degeneration (AMD), multiple sclerosis and Alzheimer’s disease. Several studies demonstrate that this neuronal damage is partly mediated by proinflammatory cytokines and reactive oxygen species released by tissue macrophages and microglia.
The present invention allows preventing the production of proinflammatory cytokines and reactive oxygen species through the application of low molecular weight polysialic acid PSA-20. In vitro studies showed that PSA-20 prevents the activation of human macrophages and human microglia thereby inhibiting the production of cytotoxic proinflammatory cytokines and reactive oxygen species. It has been shown, that this anti-inflammatory effect is mediated through the human lineage specific receptor Siglec-11.
Fragile comets, comprised of ice and dust, have been seen falling apart as they near the sun, but nothing like this has ever before been observed in the…
But what IT experts celebrate as a new milestone makes privacy groups skeptical. So far, few people have access to the prototype to test how it can be used in…
The study carried out in the Quantum Condensed Matter Research Group (CEMS, RIKEN, Japan) led by Dr. Franco Nori is published today in the journal Nature…
Concurrently on the ground, NASA is incorporating results from this test and the Robotic Refueling Mission on the International Space Station to prepare for an…
Root exploits take over the system administration functions of an operating system, such as Android. A successful Android root exploit effectively gives…
And if there is life out in space, scientists may one day use this same technique to detect its biosignature — the telltale chemical signs of its presence — in…
In physics, there's small, and then there's nullity – as in zero-dimensional.
On March 5 at 1500 UTC/10 a.m. EST, Tropical Cyclone Faxai's center was located near 22.5 south and 155.2 east, about 699 nautical miles/804.4 miles/ 1,295 km…
Atomic force microscopy is a method normally used for imaging matter with very high resolution. The sharp tip of the microscope is used to scan the surface…
Sixteen years ago two teams of supernova hunters, one led by Saul Perlmutter of the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley…
‘In today’s computer games, we often see a goal-driven dialogue where the player is limited to a number of predefined response alternatives. In my research, I…
A team of scientists around Dr. Nathalie Picqué and Prof. Theodor W. Hänsch at the Laser Spectroscopy Division of the Max Planck Institute of Quantum Optics…
This is an innovative application for life science industry. Furthermore, this application is a universal utility in screenings of drug efficiency e.g. against human-pathogenic microorganisms. It is also possible to test drugs against ion channel function of viruses or molecule libraries for selection of small molecules as new targets or for side effects.
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