Showing 20 articles starting at article 461
< Previous 20 articles Next 20 articles >
Categories: Biology: Microbiology, Physics: Optics
Published Metalens expands Its reach from light to sound
(via sciencedaily.com) Original source Engineers achieve a wide field-of-hearing acoustic metalens free from aberrations.
Published Scientists create an 'optical conveyor belt' for quasiparticles
(via sciencedaily.com) Original source Using interference between two lasers, a research group has created an 'optical conveyor belt' that can move polaritons -- a type of light-matter hybrid particle -- in semiconductor-based microcavities. This work could lead to the development of new devices with applications in areas such as quantum metrology and quantum information.
Published Speedy, secure, sustainable -- that's the future of telecom
(via sciencedaily.com) Original source A new device that can process information using a small amount of light could enable energy-efficient and secure communications.
Published First case of highly pathogenic avian influenza transmitted from cow to human confirmed
(via sciencedaily.com) Original source in March a farm worker who reported no contact with sick or dead birds, but who was in contact with dairy cattle, began showing symptoms in the eye and samples were collected by the regional health department to test for potential influenza A. Experts have now confirmed the first case of highly pathogenic avian influenza transmission from a mammal (dairy cow) to a human.
Published Milestone in plasma acceleration
(via sciencedaily.com) Original source Scientists have made a significant advance in laser plasma acceleration. By employing an innovative method, a research team managed to substantially exceed the previous record for proton acceleration. For the first time, they achieved energies that so far have only seemed possible at much larger facilities. As the research group reported, promising applications in medicine and materials science have now become much likelier.
Published Persistent strain of cholera defends itself against forces of change, scientists find
(via sciencedaily.com) Original source A longstanding mystery about the strain of Vibrio cholerae (V. cholerae) responsible for the seventh global cholera pandemic is how this lineage has managed to out-compete other pathogenic variants. The team identified a unique quirk of the immune system that protects the bacteria from a key driver of bacterial evolution.
Published Fruit fly testes offer potential tool against harmful insects
(via sciencedaily.com) Original source A way to curb nagging insects has been flying under our radar -- an enzyme from fruit fly testes. The compound could control bugs that carry disease and harm crops by stunting their ability to procreate, researchers have found.
Published Commonly used antibiotic brings more complications, death in the sickest patients
(via sciencedaily.com) Original source Treatment with the commonly used antibiotic piperacillin/tazobactam was associated with a 5 percent increase in 90-day mortality, more days on a ventilator, and more time with organ failure for patients with sepsis, finds a new study.
Published New viruses that could cause epidemics on the horizon
(via sciencedaily.com) Original source Suddenly they appear and -- like the SARS-CoV-2 coronavirus -- can trigger major epidemics: Viruses that nobody had on their radar. They are not really new, but they have changed genetically. In particular, the exchange of genetic material between different virus species can lead to the sudden emergence of threatening pathogens with significantly altered characteristics.
Published How do genetically identical water fleas develop into male or female?
(via sciencedaily.com) Original source Researchers have used a novel combination of short-read and long-read RNA sequencing to identify the different isoforms of genes expressed in the crustacean Daphnia magna. Males and females are genetically identical, but using this technique the team revealed genes that switch the predominant isoform in a male-female-dependent manner. This study may help further advance technologies in crustacean aquaculture.
Published Plant virus treatment shows promise in fighting metastatic cancers in mice
(via sciencedaily.com) Original source An experimental treatment made from a plant virus is effective at protecting against a broad range of metastatic cancers in mice, shows a new study. The treatment, composed of nanoparticles fashioned from the cowpea mosaic virus -- a virus that infects black-eyed pea plants -- showed remarkable success in improving survival rates and suppressing the growth of metastatic tumors across various cancer models, including colon, ovarian, melanoma and breast cancer.
Published Cellular activity hints that recycling is in our DNA
(via sciencedaily.com) Original source Introns are perhaps one of our genome's biggest mysteries. They are DNA sequences that interrupt the sensible protein-coding information in your genes, and need to be 'spliced out.'
Published Research explores ways to mitigate the environmental toxicity of ubiquitous silver nanoparticles
(via sciencedaily.com) Original source Researchers have taken a key step toward closing the silver nanoparticles knowledge gap with a study that indicates the particles' shape and surface chemistry play key roles in how they affect aquatic ecosystems.
Published New light shed on carboxysomes in key discovery that could boost photosynthesis
(via sciencedaily.com) Original source A research team has discovered how carboxysomes, carbon-fixing structures found in some bacteria and algae, work. The breakthrough could help scientists redesign and repurpose the structures to enable plants to convert sunlight into more energy, paving the way for improved photosynthesis efficiency, potentially increasing the global food supply and mitigating global warming.
Published GPS-like system shows promise as HIV vaccine strategy to elicit critical antibodies
(via sciencedaily.com) Original source A team has developed a vaccine approach that works like a GPS, guiding the immune system through the specific steps to make broadly neutralizing antibodies against HIV.
Published Good vibrations: New tech may lead to smaller, more powerful wireless devices
(via sciencedaily.com) Original source What if your earbuds could do everything your smartphone can, but better? A new class of synthetic materials could allow for smaller devices that use less power.
Published New Rhizobia-diatom symbiosis solves long-standing marine mystery
(via sciencedaily.com) Original source Scientists have discovered a new partnership between a marine diatom and a bacterium that can account for a large share of nitrogen fixation in vast regions of the ocean. The newly-discovered bacterial symbiont is closely related to the nitrogen-fixing Rhizobia which live in partnership with many crop plants and may open up new avenues to engineer nitrogen-fixing plants.
Published New sex-determining mechanism in African butterfly discovered
(via sciencedaily.com) Original source In a study of a species of African butterfly, researchers have discovered a previously undescribed molecular mechanism of how the sex of an embryo is initially specified.
Published Researchers harness blurred light to 3D print high quality optical components
(via sciencedaily.com) Original source Researchers have developed a new 3D printing method called blurred tomography that can rapidly produce microlenses with commercial-level optical quality. The new method may make it easier and faster to design and fabricate a variety of optical devices.
Published Discover optimal conditions for mass production of ultraviolet holograms
(via sciencedaily.com) Original source Scientists delve into the composition of nanocomposites for ultraviolet metasurface fabrication.