Culture
Growth ability at acidic conditions is important to bacteria. Enteric bacteria such as Escherichia coli and Salmonella can colonize and cause disease in the host's intestinal tract, but they have to combat acidic environments during the whole process of invading the host.
The stomach, with pH value as low as 1.5-2.5, is recognized as a natural antibiotic barrier. After entering into the small intestine, E. coli will encounter a less acidic environment (with pH value of 4-6), reproduce rapidly, and cause disease to the host ultimately.
Triglycerides, those fats that seem to be the bane of any diet, remain a mystery for many researchers. Plenty of them are in Big Macs, deep pan pizza and the like, but some are a necessity to fuel the body for daily activities.
Researchers Mark Castleberry, a doctoral student, and professor Sean Davidson, both in the UC College of Medicine, have found a way to produce in the laboratory a human protein produced in the liver known as Apolipoprotein A5 (APOA 5). It plays an important role in metabolizing and clearing excess levels of triglycerides from the bloodstream.
Chemists at Texas A&M University are taking a p[h]age from bacteria's playbook in order to beat viruses at their own game and develop new drugs to fight cancer and a host of other human diseases in the process.
Merging synthetic biology and materials science, researchers genetically coaxed specific populations of neurons to manufacture electronic-tissue "composites" within the cellular architecture of a living animal, a new proof-of-concept report reveals. The approach may enable the creation of diverse, complex and functional synthetic structures and materials within living systems.
Common assumption has long held that Ritalin, Adderall and similar drugs work by helping people focus.
Yet a new study from a team led in part by Brown University researchers shows that these medications -- usually prescribed to individuals diagnosed with attention deficit hyperactivity disorder, but often used by otherwise healthy people as a "study aid" -- actually work by directing the brain to fix its attention on the benefits, rather than the costs, of completing difficult tasks.
Using the unique capabilities of NASA's Hubble Space Telescope, a team of astronomers led by Virginia Tech's Nahum Arav has discovered the most energetic outflows ever witnessed in the universe.
DURHAM, N.C. -- Researchers at Duke University and Michigan State University have engineered a novel type of supercapacitor that remains fully functional even when stretched to eight times its original size. It does not exhibit any wear and tear from being stretched repeatedly and loses only a few percentage points of energy performance after 10,000 cycles of charging and discharging.
The researchers envision the supercapacitor being part of a power-independent, stretchable, flexible electronic system for applications such as wearable electronics or biomedical devices.
UNIVERSITY PARK, Pa. -- U.S. school districts may be flagged as over-identifying students of color as having disabilities when other factors, such as achievement gaps, may explain these disparities, according to new Penn State research published in Exceptional Children.
Simon Fraser University researchers will use their pioneering imaging technology--called Mango, for its bright colour-- to develop coronavirus testing kits. They're among a small set of Canadian researchers who responded to the rapid funding opportunity recently announced by the Canadian Institutes of Health Research (CIHR) to help address COVID-19.
ADELPHI, Md. (March 19, 2020) - A quantum sensor could give Soldiers a way to detect communication signals over the entire radio frequency spectrum, from 0 to 100 GHz, said researchers from the Army.
Such wide spectral coverage by a single antenna is impossible with a traditional receiver system, and would require multiple systems of individual antennas, amplifiers and other components.
North Carolina State University researchers have demonstrated that composite metal foams (CMFs) can pass so-called "simulated pool fire testing" with flying colors, moving the material closer to use in applications such as packaging and transportation of hazardous materials. In addition, researchers used this experimental data to develop a model for predicting how variations in the CMF would affect its performance.
Korea Brain Research Institute (KBRI, President: Pann-Ghill Suh) announced on February 10 that its research team led by Dr. Ja Wook Koo and Dr. Sukwon Lee proved that the posterior parietal cortex (PPC) of the cerebrum plays a role in fear renewal occurring in a novel context.
Posterior parietal cortex (PPC): The posterior parietal cortex is a part of the parietal lobe located in the upper-rear part of the brain and is related to high-level cognitive functions of the brain, including spatial reasoning and decision-making.
For vampire bats, sharing blood with a roostmate is the mark of a true bond. Though these relationships are uncommon, they demonstrate behavior akin to what some might call friendship. In a paper appearing March 19 in the journal Current Biology, researchers show how social grooming and food sharing can build up trust among unrelated vampire bats to form life-saving bonds that can last a lifetime.
COLUMBUS, Ohio - We humans can explain how our relationships with college roommates and co-workers have formed over the years, but scientists haven't had a good grip on how friendly connections among strangers are made between animals - until now.
A new study of vampire bats living in captivity with strangers supports the "raising-the-stakes" model of the development of cooperative relationships, which suggests that trust builds over time through the gradual acceleration of smaller mutual investments in each other's well-being.
monstrated new chip-based devices that contain all
the optical components necessary for quantum key distribution while increasing real-world security. The fast and cost-effective platform is poised to facilitate implementation of extremely secure data communication that can be used to protect everything from emails to online banking information.