As one of the most widely consumed and commercially important beverages on the planet, one would expect the experts to know everything there is to know about lager beer. But it was just a few years ago that scientists identified the South American yeast that somehow hitched a ride to Bavaria and combined with the domesticated Old World yeast used for millennia to make ale and bread to form the hybrid that makes lager or cold stored beer.
Using more than two million images collected by NASA’s orbiting Spitzer Space Telescope, a team...
Capitalizing on the ability of an organism to evolve in response to punishment from a hostile...
Scientists at Los Alamos National Laboratory are...
Generating electricity is not the only way to turn sunlight into energy we can use on demand. The sun can also drive reactions to create chemical fuels, such as hydrogen, that can in turn power cars and trains. The trouble with solar fuel production is the cost of producing the sun-capturing semiconductors and the catalysts to generate fuel.
A multi-university team of engineers has developed what could be a promising solution for charging smartphone batteries on the go, without the need for an electrical cord. Incorporated directly into a cell phone housing, the team's nanogenerator could harvest and convert vibration energy from a surface, such as the passenger seat of a moving vehicle, into power for the phone.
Using a plant-derived chemical, Univ. of Wisconsin-Madison researchers have developed a process for creating a concentrated stream of sugars that’s ripe with possibility for biofuels. The research team has published its findings in Science, explaining how they use gamma valerolactone, or GVL, to deconstruct plants and produce sugars that can be chemically or biologically upgraded into biofuels.
A team of engineers at the Univ. of Wisconsin-Madison has created a process to improve the creation of synthetic neural stem cells for use in central nervous system research. The process, outlined in a paper published in Stem Cells, will improve the state of the art in the creation of synthetic neural stem cells for use in central nervous system research.
Even scientists are fond of thinking of the human brain as a computer, following sets of rules. But if the brain is like a computer, why do brains make mistakes that computers don't? Recent research shows that our brains stumble on even the simplest rule-based calculations, because humans get caught up in contextual information, even when the rules are as clear-cut as separating even numbers from odd.
Scientists have long known that phosphorus fuels growth of algae in lakes and streams. Wisconsin Sea Grant researchers have found that nitrogen levels are a factor in whether or not these algae—specifically, blue-green algae—produce toxins. The findings, published in PLOS ONE have parts of the scientific community buzzing.
In a pair of studies that exploit the genetic sequencing of the “missing link” cold virus, rhinovirus C, scientists at the Univ. of Wisconsin-Madison have constructed a 3-D model of the pathogen that shows why there is no cure yet for the common cold. The new cold virus model was built in silico, drawing on advanced bioinformatics and the genetic sequences of 500 rhinovirus C genomes, which provided 3-D coordinates of the viral capsid.
In a 3-m-dia hollow aluminum sphere, Cary Forest, a Univ. of Wisconsin-Madison physics prof., is stirring and heating plasmas to 500,000 F to experimentally mimic the magnetic field-inducing cosmic dynamos at the heart of planets, stars and other celestial bodies. Ninety-three million miles away, the sun's magnetic field is churning and undulating as the star experiences the height of the so-called solar maximum.
Univ. of Wisconsin-Madison researchers working at the intersection of basic and applied science focus on key factors like cost, environmental impacts and sometimes, color. Take, for example, asst. chemistry prof. Trisha Andrew: Researchers in her laboratory are developing next-generation solar cells using chromophores or, in lay terms, dyes.
For astrophysicists, the interplay of hydrogen and the clouds of dust that fill the voids of interstellar space has been an intractable puzzle of stellar evolution. The dust, astronomers believe, is a key phase in the lifecycle of stars, which are formed in dusty nurseries throughout the cosmos. But how the dust interacts with hydrogen and is oriented by the magnetic fields in deep space has proved a theoretical challenge. Until now.
Chemists' efforts to study the inner workings of dirhodium metal complex reactions have been hindered by their extreme efficiency and speed, reacting at about 300 times per second. Now, a team of scientists report an advance that freezes one step of the process, rhodium catalysis, long enough to offer researchers a glimpse into the finer mechanism.
In an era of widespread genetic sequencing, the ability to edit and alter an organism's DNA is a powerful way to explore the information within and how it guides biological function. A paper from the Univ. of Wisconsin-Madison takes genome editing to a new level in fruit flies, demonstrating a remarkable level of fine control and, importantly, the transmission of those engineered genetic changes across generations.
By any measure, tuberculosis (TB) is a wildly successful pathogen. It infects as many as two billion people in every corner of the world, with a new infection of a human host estimated to occur every second. Now, thanks to a new analysis of dozens of tuberculosis genomes gathered from around the world, scientists are getting a more detailed picture of why TB is so prevalent and how it evolves to resist countermeasures.
There are a lot of small molecules people would like to convert to something useful. The current process for reducing nitrogen to ammonia is done under extreme conditions, and there is an enormous barrier to overcome to get a final product. Breaching that barrier more efficiently and reducing the huge amounts of energy used to convert nitrogen to ammonia has been a grail for the agricultural chemical industry, until now.
In an effort to sort out why some viruses such as influenza, Ebola and West Nile are so lethal, a team of U.S. researchers plans a comprehensive effort to model how humans respond to these viral pathogens. The study will be led by a Univ. of Wisconsin-Madison professor. Teams from Washington Univ. in St. Louis and the Pacific Northwest National Laboratory, also will play key roles in the study.
The potential energy available via solar power might seem limitless on a sunny summer day, but all that energy has to be stored for it to be truly useful. If you see a solar panel on a rooftop, a bulky battery or supercapacitor is hidden just out of sight, receiving energy from the panel through power lines. However, that's a storage method that doesn't scale well for solar-powered devices with no space for a battery pack.
A six-year collaboration between industry and the University of Wisconsin-Madison RFID Lab has achieved a major milestone with the U.S. Food and Drug Administration (FDA) clearing the first RFID-enabled solution to improve the safety and efficiency of the nation's blood supply.
Transplantation of human stem cells in an experiment conducted at the University of Wisconsin-Madison improved survival and muscle function in rats used to model ALS (amyotrophic lateral sclerosis), a nerve disease that destroys nerve control of muscles, causing death by respiratory failure.
University of Wisconsin-Madison chemists have identified an approach to use oxygen gas to convert lignin, a byproduct of biofuel production, into a form that could allow it to replace fossil fuels as a source of chemical feedstocks. Lignin is a complex organic material found in trees and other plants and is associated with cellulose, the valuable plant matter used to make paper or biofuels.
For the first time, human embryonic stem cells have been transformed into nerve cells that helped mice regain the ability to learn and remember. The study at the University of Wisconsin began with deliberate damage to a part of the brain that is involved in learning and memory.
When it comes to delivering genes to living human tissue, the odds of success come down the molecule. The entire therapy— including the tools used to bring new genetic material into a cell—must have predictable effects. Now, a new screening process will simplify non-viral transfection, providing a method researchers and clinicians use to find an optimal set of biomaterials to deliver genes to cells.
As the shapes of galaxies go, the spiral disk—with its characteristic pinwheel profile—is by far the most pedestrian. But despite their common morphology, how galaxies like ours get and maintain their characteristic arms has proved to be an enduring puzzle in astrophysics. How do the arms of spiral galaxies arise? Do they change or come and go over time? The answers to these and other questions are now coming into focus as researchers capitalize on powerful new computer simulations to follow the motions of as many as 100 million “stellar particles” as gravity and other astrophysical forces sculpt them into familiar galactic shapes.
A multi-university team of researchers has artificially engineered a unique multilayer material with tailorable properties. It seamlessly alternates between metal and oxide layers, achieving extraordinary superconducting properties such as the ability to transport much more electrical current than non-engineered materials. A superlattice, it is composed of 24 layers that alternate between pnictide superconductor and the oxide strontium titanate.
Researchers at the University of Wisconsin-Madison have found a new way to accelerate a workhorse instrument that identifies proteins. The high-speed technique could help diagnose cancer sooner and point to new drugs for treating a wide range of conditions.
Stretched-out clothing might not be a great practice for laundry day, but in the case of microprocessor manufacture, stretching out the atomic structure of the silicon in the critical components of a device can be a good way to increase a processor's performance.
- Page 1