ScienceDaily: All - May 01, 2024
Today's top research news
Scientists solve chemical mystery at the interface of biology and technology
Organic electrochemical transistors (OECTs) allow current to flow in devices like implantable biosensors. But scientists long knew about a quirk of OECTs that no one could explain: When an OECT is switched on, there is a lag before current reaches the desired operational level. When switched off, there is no lag. Current drops immediately. Researchers report that they have discovered the reason for this activation lag, and in the process are paving the way to custom-tailored OECTs for a growing list of applications in biosensing, brain-inspired computation and beyond.
A team of researchers led by the German Centre for Integrative Biodiversity Research (iDiv), Leipzig University (UL), and the Helmholtz Centre for Environmental Research (UFZ) has investigated the motivation and potential incentives for and challenges of low-intensity grazing among farmers and land users in Europe. The interview results have been published in Land Use Policy.
Methane emissions from landfill could be turned into sustainable jet fuel in plasma chemistry leap
Researchers have developed a chemical process using plasma that could create sustainable jet fuel from methane gas emitted from landfills, potentially creating a low-carbon aviation industry.
Big data reveals true climate impact of worldwide air travel
A new study that looked at nearly 40 million flights in 2019 calculated the greenhouse gas emissions from air travel for essentially every country on the planet. At 911 million tons, the total emissions from aviation are 50 per cent higher than the 604 million tons reported to the United Nations for that year.
Under examination: Buckling -- when structures suddenly collapse
An engineer has designed a model to guide better design of thin-walled structures, like planes, cars and submersibles, to avoid catastrophe like sudden collapse due to buckling.
Image: SUV with collapsed roof, Judy Kennamer/Shutterstock.com
New and improved way to grow the cells that give rise to the kidney's filtration system
Scientists report significant progress in cultivating nephron progenitor cells (NPCs), the cells destined to form the kidney's filtration system, the nephrons. NPCs hold immense promise for understanding kidney development, modeling diseases, and discovering new treatments. The team improved the chemical cocktail for generating and growing NPCs in the laboratory, enabling the sustained growth of both mouse and human NPCs in a simple 2-dimensional format.
Biodegradable 'living plastic' houses bacterial spores that help it break down
A new type of bioplastic could help reduce the plastic industry's environmental footprint. Researchers have developed a biodegradable form of thermoplastic polyurethane (TPU) filled with bacterial spores that, when exposed to nutrients present in compost, germinate and break down the material at the end of its life cycle.
Loneliness in adulthood follows a U-shaped pattern: it's higher in younger and older adulthood, and lowest during middle adulthood, reports a new study that examined nine longitudinal studies from around the world. The study also identified several risk factors for heightened loneliness across the whole lifespan, including social isolation, education and physical impairment.
Researchers parse oddity of distantly related bats in Solomon Islands that appear identical
A study of body size in leaf-nosed bats of the Solomon Islands has revealed surprising genetic diversity among nearly indistinguishable species on different islands.
NASA's Webb maps weather on planet 280 light-years away
Researchers have successfully used NASA's James Webb Space Telescope to map the weather on the hot gas-giant exoplanet WASP-43 b.
Researchers have discovered over a hundred new regions of the human genome, also known as genomic loci, that appear to influence a person's blood pressure. In total, over 2,000 independent genetic signals for blood pressure are now reported, demonstrating that blood pressure is a highly complex trait influenced by thousands of different genetic variants.
A virus could help save billions of gallons of wastewater produced by fracking
An estimated 168 billion gallons of wastewater -- or produced water -- is generated annually by the Permian Basin fracking industry, according to a 2022 report. The major waste stream has proved both difficult and costly to treat because of the chemical complexity of the water.
Researchers target neurogenesis in new approach to treat Parkinson's disease
Researchers have found a way to better control the preclinical generation of key neurons depleted in Parkinson's disease, pointing toward a new approach for a disease with no cure and few effective treatments.
Discovery of mechanism plants use to change seed oil could impact industrial, food oils
Researchers have discovered a new mechanism of oil biosynthesis and found a way to genetically engineer a type of test plant to more efficiently produce different kinds of seed oil that it otherwise wouldn't make. While the engineering is proof-of-concept, this discovery could lead to improved production of valuable oils used in food and by a range of industries. The modified plant overcame metabolic bottlenecks and produced significant amounts of an oil similar to castor oil that it doesn't naturally produce.
New technology makes 3D microscopes easier to use, less expensive to manufacture
3D microscopes are used in applications from the life sciences to semiconductor manufacturing. Now engineers are developing patented and patent-pending innovations making them work faster to capture even more 3D images and less expensive to manufacture.
Trotting robots reveal emergence of animal gait transitions
A four-legged robot trained with machine learning has learned to avoid falls by spontaneously switching between walking, trotting, and pronking -- a milestone for roboticists as well as biologists interested in animal locomotion.
E-bike incentives prove to be worth the investment
Electric bicycle rebates have exploded in popularity in North America as transportation planners try to get people out of their cars and into healthier, more climate-friendly alternatives. However, questions remain: Are new cycling habits sustainable? Who benefits most from these incentives? And are they worth the cost? Researchers now have some answers.
The double-fanged adolescence of saber-toothed cats
How did North America's saber-toothed cats hunt without breaking their unwieldy saber-like canines, which are vulnerable to sideways bending stresses? A paleontologist provides mechanical evidence that during adolescence, when young cats were learning to hunt, their baby teeth remained in place for up to 30 months to laterally buttress the emerging permanent sabers. By the time the baby teeth fell out, presumably the adult cat knew how to protect its sabers during attacks.
Fading lights: Multiple threats to North America's firefly populations
Scientists have applied a data-driven approach to understanding firefly population dynamics on a continental scale. Key findings from this new study indicate that fireflies, part of the beetle order, are sensitive to various environmental factors, from short-term weather conditions to longer climatic trends, including the number of growing-degree days related to temperature accumulations.
Microarray patches safe and effective for vaccinating children, trial suggests
The first study of the use of microarray patches to vaccinate children has shown that the method is safe and induces strong immune responses. The phase 1/2 randomized trial compared results from the measles and rubella vaccine delivered by a microarray patch, a small sticking plaster-like device with an array of microscopic projections that painlessly penetrate the skin and deliver the vaccine, or by conventional injection with a needle and syringe.
Research on RNA editing illuminates possible lifesaving treatments for genetic diseases
The research explores how CRISPR can be used to edit RNA.
Study finds school entry requirements linked to increased HPV vaccination rates
A new study shows that school entry requirements are linked to an increase in human papillomavirus (HPV) vaccinations.
Scientists harness the wind as a tool to move objects
Researchers have developed a technique to move objects around with a jet of wind. The new approach makes it possible to manipulate objects at a distance and could be integrated into robots to give machines ethereal fingers.