Showing 20 articles starting at article 1641

< Previous 20 articles        Next 20 articles >

Categories: Biology: Microbiology, Physics: Optics

Return to the site home page

     (via sciencedaily.com) 

Indoor air pollution may have met its match. Scientists have designed catalyst-coated lampshades that transform indoor air pollutants into harmless compounds. The lampshades work with halogen and incandescent light bulbs, and the team is extending the technology so it will also be compatible with LEDs.

     (via sciencedaily.com) 

Research is underway around the world to find alternatives to our current electronic computing technology, as great, electron-based systems have limitations. A new way of transmitting information is emerging from the field of magnonics: instead of electron exchange, the waves generated in magnetic media could be used for transmission, but magnonics-based computing has been (too) slow to date. Scientists have now discovered a significant new method: When the intensity is increased, the spin waves become shorter and faster -- another step towards magnon computing.

     (via sciencedaily.com)     Original source 

Teeth could be capable of preserving antibodies for hundreds of years, allowing scientists to investigate the history of infectious human diseases, a new study has found.

     (via sciencedaily.com)     Original source 

A new method allows large quantities of muscle stem cells to be safely obtained in cell culture. This provides a potential for treating patients with muscle diseases -- and for those who would like to eat meat, but don't want to kill animals.

     (via sciencedaily.com)     Original source 

Routinely cleaning wristbands is generally ignored. New research finds 95 percent of wristbands tested were contaminated. Rubber and plastic wristbands had higher bacterial counts, while gold and silver, had little to no bacteria. Bacteria found were common skin residents of the genera Staphylococcus and Pseudomonas, and intestinal organisms of the genera Escherichia, specifically E. coli. Staphylococcus was prevalent on 85 percent of the wristbands; researchers found Pseudomonas on 30 percent of the wristbands; and they found E. coli bacteria on 60 percent of the wristbands, which most commonly begins infection through fecal-oral transmission.

     (via sciencedaily.com)     Original source 

Bioengineers developed a platform that enhances survival and function of probiotics engineered to diagnose inflammatory bowel disease in animals. The technology holds promise for minimally invasive disease monitoring and advanced smart therapeutics.

     (via sciencedaily.com) 

Researchers have found a way to control the interaction of light and quantum 'spin' in organic semiconductors, that works even at room temperature.

     (via sciencedaily.com)     Original source 

In antibacterial photodynamic therapy, irradiation is used to produce reactive oxygen species that kill off bacteria. Because it requires external light and oxygen, this method is only suitable for surface infections. A research team has now introduced a molecular 'singlet oxygen battery' that can be 'charged' with reactive oxygen, which it then releases in deep tissue layers to target methicillin-resistant staphylococcus.

     (via sciencedaily.com) 

Researchers have developed a new algorithm for recovering the 3D refractive index distribution of biological samples that exhibit multiple types of light scattering.

     (via sciencedaily.com)     Original source 

Advanced microscopy techniques give scientists valuable clues for how to fight an enzyme that is leading to a rise in cases of antibiotic-resistant bacterial infections worldwide.

     (via sciencedaily.com) 

A mathematical model provides new insights into the distribution of genetic information during bacterial cell division

     (via sciencedaily.com) 

Iron is well-known for rusting, but this doesn't just happen on contact with oxygen and water. Some bacteria are also able to able to decompose iron anaerobically in a process referred to as electrobiocorrosion. The sediment-dwelling bacterium Geobacter sulfurreducens uses electrically conductive protein threads for this purpose. They produce magnetite from the iron, which promotes further corrosion in a positive feedback loop.

     (via sciencedaily.com) 

Medical imaging via X-rays, CT scans, MRIs and ultrasounds provide health-care professionals with unique perspectives and a better understanding of what's happening inside a patient's body. Using various forms of waves, these machines can visualize many unseen ailments and diseases. This imaging is beneficial for health-care professionals to make correct diagnoses, but the added insight of spectroscopy provides even more detail. Spectroscopy offers a means to identify biomolecules within specimens through their characteristic signatures for absorption in the electromagnetic spectrum.

     (via sciencedaily.com)     Original source 

Unexpected new insights into how COVID-19 infects cells help explain why coronaviruses are so good at jumping from species to species and will help scientists better predict how COVID-19 will evolve.

     (via sciencedaily.com)     Original source 

Expensive noble metals often play a vital role in illuminating screens or converting solar energy into fuels. Now, chemists have succeeded in replacing these rare elements with a significantly cheaper metal. In terms of their properties, the new materials are very similar to those used in the past.

     (via sciencedaily.com) 

Through a series of innovative experiments, scientists found that a sheet of glass crystal just a few atoms thick could trap and carry light. Not only that, but it was surprisingly efficient and could travel relatively long distances -- up to a centimeter, which is very far in the world of light-based computing.

     (via sciencedaily.com) 

Using scaffolds of folded DNA, engineers assembled arrays of quantum rods with desirable photonic properties that could enable them to be used as highly efficient micro-LEDs for televisions or virtual reality devices.

     (via sciencedaily.com)     Original source 

Using a novel method to detect microbial activity in biological soil crusts, or biocrusts, after they are wetted, a research team in a new study uncovered clues that will lead to a better understanding of the role microbes play in forming a living skin over many semi-arid ecosystems around the world. The tiny organisms -- and the microbiomes they create -- are threatened by climate change.

     (via sciencedaily.com) 

A novel catalysis scheme enables chemical reactions that were previously virtually impossible. The method is also environmentally friendly and does not require rare and precious metals. The researchers recorded the exact course of the catalysis in a kind of high-speed film. They did this using special lasers that can make processes visible that last only fractions of a billionth of a second. The results allow them to further optimize the catalyst.

     (via sciencedaily.com)     Original source 

Researchers have created a panel of genetically diverse mice that accurately model the highly variable human response to SARS-CoV-2 infection. The team uncovered differences in the innate immune and regulated proinflammatory responses, the timing and strength of which are associated with disease severity.