- ScienceDaily
- 20/3/19 21:15
New research is producing a more accurate historical timeline for the occupation of Native American sites in upstate New York, based on radiocarbon dating of organic materials and statistical modeling.
New research is producing a more accurate historical timeline for the occupation of Native American sites in upstate New York, based on radiocarbon dating of organic materials and statistical modeling.
Researchers have published the first comprehensive overview of the major changes that occur in mammalian skin cells as they prepare to heal wounds. Results from the study provide a blueprint for future investigation into pathological conditions associated with poor wound healing, such as in diabetic patients.
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.
Engineering 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.
Advances in treatment have led to the largest yearly declines in deaths due to melanoma ever recorded for this skin cancer, results of a new study suggest.
Neuroscientists can now capture millisecond electrical changes in neurons in the cortex of an alert mouse, allowing tracing of neural signals, including subthreshold events, in the brain. The new technique combines all-optical scanning with two-photon fluorescence imaging to produce a 2D rasterized picture every 1,000-3,000 milliseconds. That and another technique that allows 3D imaging of large...
Researchers have improved our understanding of how tremor -- the most common movement disorder -- happens, opening the possibility of novel therapies for this condition.
Researchers will use a pioneering imaging technology -- called Mango, for its bright color -- to develop coronavirus testing kits.
Researchers have engineered a novel type of supercapacitor that maintains full functionality even when stretched to eight times its original size. It does not exhibit any wear and tear from being stretched thousands of times, and loses only a few percentage points of energy performance after 10,000 cycles of charging-discharging. The researchers envision the supercapacitor being part of a...
New research from cognitive neuroscientists has pinpointed how stimulants such as Ritalin and Adderall can change people's motivation to complete difficult tasks.
A new paper points out the need for an important new refinement to radiocarbon dating. The research has relevance for understanding key dates in Mediterranean history and prehistory, including the tomb of Tutankhamen and a controversial but important volcanic eruption on the Greek island of Santorini.
Some of the molecules' responses were surprising and others had been seen before with other techniques, but never in such detail or so directly, without relying on advance knowledge of what they should look like.
Researchers have demonstrated 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.
Researchers developed a technique called genetically targeted chemical assembly, or GTCA, which they used to assemble electronically active biopolymer meshes on mammalian brain cells and on neurons in C. elegans. The polymers changed the firing rates of neurons in mammalian cells and altered C. elegans crawling behavior. GTCA was also tested on kidney cells and should work with other cell types.
A new study has provided the most comprehensive analysis of human genetic diversity to date, after the sequencing of 929 human genomes. The study uncovers a large amount of previously undescribed genetic variation and provides new insights into our evolutionary past, highlighting the complexity of the process through which our ancestors diversified, migrated and mixed throughout the world.
Researchers are using a kind of machine learning known as sentiment analysis to assess the successes and failures of wildlife conservation over time. In their study, the researchers assessed the abstracts of more than 4,000 studies of species reintroduction across four decades and found that, generally speaking, we're getting better and better at reintroducing species to the wild.
When parents eat low-protein or high-fat diets it can lead to metabolic disorders in their adult offspring. Now, an international team has identified a key player and the molecular events underlying this phenomenon in mice.
A parasite known only to be hosted in North America by the Virginia opossum is infecting sea otters along the West Coast. A new study elucidates the sometimes surprising and complex pathways infectious pathogens can move from land to sea to sea otter.
Who in the Middle Ages cooked their dinner in copper pots? And where did they do it? Such information can be revealed by chemical analyzes of human bones.
In three recent papers, engineers report the first demonstration of optical phased array technology on-chip at both near infrared and blue wavelength with applications in a broad range of research areas. They have developed a low-power beam steering platform that is a non-mechanical, robust, and scalable approach to beam steering.
Most technical functional units are built bit by bit according to a well-designed construction plan. The components are sequentially put in place by humans or machines. Life, however, starts bottom-up with molecular self-assembly. To better understand the growth of macroscopic structures from molecules, a research team has mimicked such processes with custom-made molecules. They fabricated a...
Though COVID-19 so far appears to be largely sparing children, researchers are cautioning that it is critical to understand how the virus affects kids to model the pandemic accurately, limit the disease's spread and ensure the youngest patients get the care they need.
In two new studies, an international team of researchers identifies the ideal composition of a group of giraffes to be translocated for conservation purposes and provides guidelines for all aspects of the translocation process.
Thanks to a new algorithm, researchers can now use satellite data to determine in which parts of the ocean certain types of phytoplankton are dominant. In addition, they can identify toxic algal blooms and assess the effects of global warming on marine plankton, allowing them to draw conclusions regarding water quality and the ramifications for the fishing industry.
Recent work has examined the fluid mechanics of cetacean propulsion by numerically simulating their oscillating tail fins. A team developed a model that, for the first time, could quantitatively predict how the motions of the fin should be tailored to its shape in order to maximize its efficiency. The research could influence the design of next-gen underwater robots.