Showing 20 articles starting at article 981
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Categories: Chemistry: Biochemistry, Geoscience: Oceanography
Published Putting sound waves to work to create safer public spaces
(via sciencedaily.com) Original source Absorbing excess sound to make public environments like theaters and concert halls safer for hearing and using the unwanted sound waves to create electricity is the aim of a new paper. The authors built a system of piezoelectric sensors that can be installed in walls, floors, and ceilings to absorb sound waves and collect their energy. They used computer simulations to fine-tune variables including the voltage needed to power the main device component, the frequency and intensity of the input sound, and piezoelectric sensors tested in parallel and serial configurations.
Published How tiny hinges bend the infection-spreading spikes of a coronavirus
(via sciencedaily.com) Original source Far from being stiff and pointy, a coronavirus's infectious spikes are shaped like chicken drumsticks with the meaty part facing out, and the meaty part can tilt every which way on its slender stalk. A new study suggests that disabling those hinges could block infection.
Published This wireless, handheld, non-invasive device detects Alzheimer's and Parkinson's biomarkers
(via sciencedaily.com) Original source An international team of researchers has developed a handheld, non-invasive device that can detect biomarkers for Alzheimer's and Parkinson's Diseases. The biosensor can also transmit the results wirelessly to a laptop or smartphone. The team tested the device on in vitro samples from patients and showed that it is as accurate as the state of the art method. Ultimately, researchers plan to test saliva and urine samples with the biosensor. The device could be modified to detect biomarkers for other conditions as well. The device relies on electrical rather than chemical detection, which researchers say is easier to implement and more accurate.
Published Ammonia fuel offers great benefits but demands careful action
(via sciencedaily.com) Original source Researchers have identified the potential environmental risks of using ammonia as a zero-carbon fuel in order to develop an engineering roadmap to a sustainable ammonia economy.
Published AI programs spat out known data and hardly learned specific chemical interactions when predicting drug potency
(via sciencedaily.com) Original source Artificial intelligence (AI) is on the rise. Until now, AI applications generally have 'black box' character: How AI arrives at its results remains hidden. A cheminformatics scientist has now developed a method that reveals how certain AI applications work in pharmaceutical research. The results are unexpected: the AI programs largely remembered known data and hardly learned specific chemical interactions when predicting drug potency.
Published Recycling of water-based adhesive achieved by changing pH
(via sciencedaily.com) Original source A research team has developed a reversible, water-based glue that has good adhesion in the neutral pH range, but can be detached again in strongly acidic or alkaline environments. The novel adhesive system, which is based on electrostatic interactions, has bond strengths somewhere between those of structural adhesives and pressure-sensitive adhesives. The new adhesive also bonds 'difficult' surfaces such as water-repellent polypropylene.
Published Endangered turtle population under threat as pollution may lead to excess of females being born
(via sciencedaily.com) Original source Researchers find exposure to heavy metals cadmium and antimony and certain organic contaminants, accumulated by the mother and transferred to her eggs, may cause embryos to be feminized in green sea turtles (Chelonia mydas), a species already at risk of extinction from a current lack of male hatchlings.
Published quantum mechanics: Unlocking the secrets of spin with high-harmonic probes
(via sciencedaily.com) Original source Deep within every piece of magnetic material, electrons dance to the invisible tune of quantum mechanics. Their spins, akin to tiny atomic tops, dictate the magnetic behavior of the material they inhabit. This microscopic ballet is the cornerstone of magnetic phenomena, and it's these spins that a team of researchers has learned to control with remarkable precision, potentially redefining the future of electronics and data storage.
Published New work sheds light on inner working of cells
(via sciencedaily.com) Original source New research provides a deeper understanding of the way components within cells are interconnected. Through cellular visualization using SRS microscopy, researchers have addressed the challenge of attaining clear images of individual processes.
Published Photonics team develops high-performance ultrafast lasers that fit on a fingertip
(via sciencedaily.com) Original source Scientists demonstrate a novel approach for creating high-performance ultrafast lasers on nanophotonic chips. The new advance will enable pocket-sized devices that can perform detailed GPS-free precision navigation, medical imaging, food safety inspection and more.
Published Scientists caution against a reliance on mechanical devices to clear water bodies of plastic
(via sciencedaily.com) Original source An international group of scientists has called for the United Nations Treaty on Plastic Pollution to focus more on measures to reduce the production and consumption of plastics and the prevention of future plastic waste, rather than on the unselective removal of waste already in the water.
Published Chemists image basic blocks of synthetic polymers
(via sciencedaily.com) Original source Researchers have developed a new method to image polymerization catalysis reactions one monomer at a time.
Published New way to count microbes speeds research, cuts waste, could lead to new antibiotics
(via sciencedaily.com) Original source Researchers have developed a new way of counting microorganisms that works as much as 36 times faster than conventional methods, cuts plastic use more than 15-fold and substantially decreases the cost and carbon footprint of biomedical research. The technique could revolutionize the way microbiology experiments are conducted, allowing researchers to test potential new antibiotics in a fraction of the time.
Published Scientists use quantum biology, AI to sharpen genome editing tool
(via sciencedaily.com) Original source Scientists used their expertise in quantum biology, artificial intelligence and bioengineering to improve how CRISPR Cas9 genome editing tools work on organisms like microbes that can be modified to produce renewable fuels and chemicals.
Published Barnacle bends shape to fend off warm-water sea snails on the move
(via sciencedaily.com) Original source Some barnacles are 'morphing' to protect themselves from predatory warm-water sea snails, which are expanding into their territory due to climate change.
Published A breath of fresh air keeps drug-producing cells alive longer
(via sciencedaily.com) Original source Researchers have developed a novel device that produces oxygen inside of a 'living pharmacy' implant in order to keep cells alive inside the self-contained device. The device produses oxygen through a smart, energy-efficient version of water splitting. In new experiments, the novel device kept cells (70-80%) alive for close to a month in low oxygen conditions in vitro, or weeks in vivo.
Published Understanding the dynamic behavior of rubber materials
(via sciencedaily.com) Original source Rubber-like materials can exhibit both spring-like and flow-like behaviors simultaneously, which contributes to their exceptional damping abilities. To understand the dynamic viscoelasticity of these materials, researchers have recently developed a novel system that can conduct dynamic mechanical analysis and dynamic micro X-ray computed tomography simultaneously. This technology can enhance our understanding of the microstructure of viscoelastic materials and pave the way for the development of better materials.
Published Liquid metals shake up century-old chemical engineering processes
(via sciencedaily.com) Original source Liquid metals could be the long-awaited solution to 'greening' the chemical industry, according to researchers who tested a new technique they hope can replace energy-intensive chemical engineering processes harking back to the early 20th century.
Published A different take on phosphorus: Bacteria use organic phosphorus and release methane in the process
(via sciencedaily.com) Original source Some bacteria are able to tap into unusual sources of nutrients in the surface water of the oceans. This enables them to increase their primary production and extract more carbon dioxide from the atmosphere. In doing so, however, they release the potent greenhouse gas methane.
Published Device 'smells' seawater to discover, detect novel molecules
(via sciencedaily.com) Original source Under the ocean's surface, marine organisms are constantly releasing invisible molecules. Some of the chemical clues reveal which creatures are nearby, while others could be used someday as medications. Now, researchers report a proof-of-concept device that 'sniffs' seawater, trapping dissolved compounds for analyses. The team showed that the system could easily concentrate molecules that are present in underwater caves and holds promise for drug discovery in fragile ecosystems, including coral reefs.