Researchers at the Paul Scherrer Institute PSI have used the Swiss Light Source SLS to record a molecular energy machine in action and thus to reveal how energy production at cell membranes works. For this purpose they developed a new investigative method that could make the analysis of cellular processes significantly more effective than before. They have now published their results in the journal Science.
BURLINGTON, Vt. (AP) The Vermont Department of Health is reminding residents to avoid contact with toxic blue-green algae in Vermont waters.
It says warm weather creates ideal conditions for cyanobacteria to grow. Blooms can form on the surface and wash up on shorelines.
They’ve already been spotted in Mallets and Missisquoi bays in Lake Champlain. Officials say swimming or wading in water with cyanobacteria may cause skin rashes, diarrhea, a sore throat, stomach problems, or more serious health concerns. It says dogs are especially vulnerable to the toxic effects.
As published in a recent study, researchers have discovered that neural stem cells are impeded by the invasion of T cells, immune cells that are not normally present in the neural stem cell niche.
The neural stem cell niches
Our brains contain neural stem cells (NSCs); like their name suggests, these cells are responsible for the formation of new neurons within the brain. This process, which continues throughout life, is known as neurogenesis. These stem cells live in particular niches, which contain a panoply of different cell types, including stem cells in different phases of development and multiple types of immune cells. However, the researchers discovered a startling fact: the brains of older mice contain many specific immune cells known as T cells, while the brains of younger mice contain very few – and, as the study explains, this is true for humans as well.
Electric generators have a plethora of uses—ranging from automotive to aircraft to microgrids. There is currently a strong desire to reduce the size and increase the efficiency of the devices.
Researchers at Purdue University have come up with an effective way to reduce the size and increase the efficiency of the moderate- to low-power electric generators used in those applications.
A wound rotor synchronous machine contains a field winding—a group of insulated current-carrying coils—on the rotor used to create a rotating magnetic field and regulate the output voltage. Associated with this winding are losses, which generate heat that must be removed from the spinning rotor. Permanent magnets can also be used to generate the magnetic field with much less loss and heat generation, but this approach does not facilitate output voltage regulation.
A machine that speeds up evolution is revolutionizing genome design and selection of designer microbes.
The quantum interference of electrons that have been scattered by light has been used to produce holograms of the underlying electromagnetic fields — and might open up methods for studying materials at high temporal and spatial resolution. A fresh approach to imaging light fields.
Does a mysterious mirror world lurk in the shadows of perceived reality? It could explain a lot.
When Jeff Bezos and his first Amazon staff began selling books from his garage, they started an enterprise that is now the largest online retailer in much of the world. As Amazon celebrates its 25th birthday, it’s the world’s most valuable public company and Bezos is the richest person on the planet.
For 50 years, evolutionary theory has emphasized the importance of neutral mutations over adaptive ones in DNA. Real genomic data challenge that assumption.
Amazon is selling a slew of tiny homes on its Website for different price points including ones that are under $20,000.