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1,154 articles from ScienceDaily

Fast, portable test can diagnose COVID-19 and track variants

Clinicians using a new viral screening test can not only diagnose COVID-19 in a matter of minutes with a portable, pocket-sized machine, but can also simultaneously test for other viruses -- like influenza -- that might be mistaken for the coronavirus. At the same time, they can sequence the virus, providing valuable information on the spread of COVID-19 mutations and variants.

Cervical cancer testing tech could replace pap smears, save lives

Emerging technologies can screen for cervical cancer better than Pap smears and, if widely used, could save lives in areas where access to health care may be limited. In Biophysics Reviews, scientists at Massachusetts General Hospital write advances in nanotechnology and computer learning are among the technologies helping develop HPV screening that take the guesswork out of the precancer tests....

Mothers bear the cost of the pandemic shift to remote work

At the same time the pandemic was expanding the number of people working remotely, children nationwide began attending school virtually. The result? An increase in domestic work that fell disproportionately on the shoulders of mothers, according to a new study by sociologists.

Heat conduction record with tantalum nitride

In order to remove heat, for example from computer chips, materials are needed which are extremely good at conducting heat. Scientists in Vienna have analyzed materials on an atomic level and found an excellent new heat conductor: theta-phase tantalum nitride.

Insight into the evolution of bones

Palaeontologists have now analyzed the bone structures of 400 million-year-old fossils of marine life at unprecedentedly high resolution and in 3D. To be able to view these structures, tomography experts examined the samples under the focused ion beam of a scanning electron microscope to calculate 3D images from the data, achieving resolutions in the nanometer range using technology that was...

Regenerating hair follicle stem cells

Researchers have identified the biological mechanism of how chronic stress leads to hair loss. They found that the stress hormone corticosterone causes hair follicle stem cells to stay in an extended resting phase, without regenerating tissue. The stress signal was first received by dermal cells surrounding the hair follicle, preventing them from releasing Gas6, a molecule that activates stem...

Ridesharing intensifies urban road congestion

A study to assess how ridesharing impacts urban mobility in the United States, found that ridesharing increased both intensity and duration of road congestion. Ridesharing substituted for public transit ridership by almost 9% and there was no significant change in private vehicle ownership.