Tech
An international team of researchers from Russia, Sweden and South Korea has proposed a new way to test the structural stability of predicted 2D materials. The testing revealed a number of materials erroneously proposed earlier. The scholars believe that the use of the new method will further help to avoid mistakes in the development of two-dimensional nanomaterials that are in high demand in the modern world. The results were published in the international journal Physical Chemistry Chemical Physics.
The fundamental principle of a spin valve is that the resistance is dependent on the parallel or antiparallel configurations of the two ferromagnetic electrodes, thus associating the magnetoresistance (MR) effect, whose basic structure consists of two ferromagnetic metals decoupled by the insertion of a non-magnetic spacer.
Researchers at the Yale School of Public Health have found that death records of LGBTQ youth who died by suicide were substantially more likely to mention bullying as a factor than their non-LGBTQ peers. The researchers reviewed nearly 10,000 death records of youth ages 10 to 19 who died by suicide in the United States from 2003 to 2017.
The findings are published in the current issue of JAMA Pediatrics.
The second tropical storm of the North Atlantic Ocean hurricane season has formed off the coast of South Carolina. NASA-NOAA's Suomi NPP satellite provided forecasters with a visible image of Tropical Storm Bertha as it was organizing.
On May 27, NOAA's National Hurricane Center (NHC) issued a Tropical Storm Warning in effect from Edisto Beach, SC to South Santee River, SC.
A new study involving a scientific analysis of the prevalence of "LOL" in students' text messages demonstrates important potential applications for classroom learning. The study, "Linguistics in General Education: Expanding Linguistics Course Offerings through Core Competency Alignment," will be published in the June 2020 issue of the scholarly journal Language.
The frequency of genetic variants associated with attention-deficit/hyperactivity disorder (ADHD) has decreased progressively in the evolutionary human lineage from the Palaeolithic to nowadays, according to a study published in the journal Scientific Reports.
New Haven, Conn. -- Yale geophysicists reported that Earth's ever-shifting, underground network of tectonic plates was firmly in place more than 4 billion years ago -- at least a billion years earlier than scientists generally thought.
Tectonic plates are large slabs of rock embedded in the Earth's crust and upper mantle, the next layer down. The interactions of these plates shape all modern land masses and influence the major features of planetary geology -- from earthquakes and volcanoes to the emergence of continents.
ITHACA, N.Y. - A robust body of research examines and addresses gender discrepancies in many fields, but physics is not one of them, Cornell researchers have found.
Researchers have developed new software that can be integrated with existing hardware to enable people using robotic prosthetics or exoskeletons to walk in a safer, more natural manner on different types of terrain. The new framework incorporates computer vision into prosthetic leg control, and includes robust artificial intelligence (AI) algorithms that allow the software to better account for uncertainty.
The Atlantic Rainforest has been so savagely clearcut and burned over several centuries that only approximately 12% now remains. Nevertheless, it is still one of the planet's largest repositories of biodiversity, and counter to a process that appeared irreversible, forest cover in the biome has begun to grow back in recent decades.
Tropical forests contain some of the most biodiverse and dynamic ecosystems in the world. Environmental conditions such as precipitation, temperature, and soils shape the biota of the landscape. This influence is especially noticeable when comparing the towering trees found in low elevation forests to the hardier, shorter ones found at the top of tropical mountains. Together, these factors create an ever-changing and heterogeneous ecosystem, with each niche harboring different species of uniquely adapted trees.
Concerns about environmental and health risks of some fluorinated carbon compounds used to make non-stick coatings and fire-fighting foams have prompted manufacturers to develop substitutes, but these replacements are increasingly coming under fire themselves. To get a handle on the scope of the problem, scientists have been studying how widely these chemicals have contaminated the environment. Now, researchers report in ACS' Environmental Science & Technology that, in one case, they have dispersed more broadly than previously realized.
Led by King's College London in collaboration with the University of Zimbabwe and the London School of Hygiene & Tropical Medicine, and published in The Lancet's EClinicalMedicine journal, the research examined a group of people with depression in Zimbabwe and found that people are nearly three times more likely to suffer this illness long-term if they also have a high level of anxiety.
A new study shows that people with a rare genetic disease that causes bleeding in the brain have gut microbiomes distinct from those without the disease. Moreover, it is the molecules produced by this bacterial imbalance that cause lesions to form in the brains of these patients.
The results are the first in any human neurovascular disease. They have implications both for treating the disease and in examining other neurovascular diseases that could be affected by a person's gut microbiome.
An early age of pregnancy (25 years and younger) is known to reduce the overall risk of breast cancer by over 30%. CSHL Assistant Professor Camila dos Santos spent several years teasing out the molecular details behind the protective effects of pregnancy. She discovered that one way breast cells protect themselves from cancer after pregnancy in mice is to tuck away a particularly potent cancer gene, cMYC, where it cannot cause harm. Another trick is to keep breast cells suspended in a state of "pre-senescence," a moment in the cell's life cycle between dying, living, and potential cancer.