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כתבות אחרונות מאתר 'Phys'
Phys

A little Big Bang: Bowling-pin-shaped nuclei shed new light on the universe's first moments‎

What happened in the first moments of the universe—before the building blocks of life and the world we know today came into existence? Physicists at the CERN research facility in Switzerland are trying to answer this question by recreating some of the extreme conditions that prevailed in the universe during its earliest history. Now, researchers from the Niels Bohr Institute, together with colleagues from the international ALICE collaboration, have come one step closer to understanding those conditions.

19:23
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Phys

3D imaging and machine learning improve noncontact weight estimation of frozen skipjack tuna‎

Accurately determining fish body size and weight is essential for fisheries resource management and seafood processing; however, measuring large quantities of fish is labor-intensive, and results may vary among operators.

19:23
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Phys

Neanderthal hips challenge long-standing hypothesis of a trade-off between childbirth and bipedal walking‎

The most prominent difference between human male and female skeletons is the pelvis, which anthropologists often use to determine the sex of ancient remains. Scientists have long believed the human pelvis evolved mainly as a compromise between walking on two legs and giving birth to large-brained babies. This idea is known as the Obstetrical Dilemma Hypothesis.

19:12
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Phys

International review standardizes selenosugar nomenclature and selenium metabolism‎

Selenosugars are the major urinary metabolites responsible for the physiological excretion of selenium. Understanding selenium metabolism relies on accurately detecting and identifying selenosugars. However, research has been hindered by inconsistent terminology used for selenosugars, varying analytical practices and an incomplete understanding of the biological pathway for selenosugar biosynthesis.

19:04
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Phys

Illuminating the limits of the international unit of light, the candela‎

The candela, the international unit of light in use for almost a century, forms the basis of photometry. According to a new study, measurements derived from it systematically misjudge the brightness of colored light sources and depart markedly from human perception.

19:04
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Phys

Nanoparticle combines two strategies to speed up the healing of chronic wounds‎

Researchers at the University of São Paulo (USP) in Ribeirão Preto, Brazil, have developed a nanoparticle that can address the various factors hindering the healing of chronic wounds, which include ulcers associated with diabetes and pressure ulcers common among bedridden individuals. These wounds, which may persist for months or even years, affect about 1% to 2% of the population and represent a significant public health concern because they increase the risk of infection and amputation and significantly impair patients' quality of life.

18:43
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Phys

Fertilizer prices and shortages are hamstringing our farmers. But we have other options‎

When was the last time you bought a loaf of bread?

18:43
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Phys

Designing supramolecular therapies to cross the blood-brain barrier‎

A new Northwestern Medicine study has uncovered key molecular design principles that could help supramolecular therapeutics cross the blood-brain barrier, a major challenge for this novel approach to treating neurological disorders.

18:24
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Phys

The first wave of bird flu is the worst: What can Australia learn from overseas?‎

Hundreds of dead birds are now being reported as the lethal H5N1 strain of bird flu begins to spread across Australia. Government reports show the virus is circulating in resident birds.

18:24
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Phys

Tobacco companies helped flood the federal comment process that stalled menthol cigarette ban‎

When the U.S. Food and Drug Administration (FDA) proposed banning menthol cigarettes and flavored cigars in 2022, nearly 250,000 public comments flooded in—a record response that led the Biden administration to delay a final decision.

18:01
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