A new technique based on quantum entanglement doubles the resolution of optical microscopes without the need for shorter-wavelength/higher-energy light that can damage delicate biological structures.
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In continuum mechanics, stress is a physical quantity that describes forces present during deformation. An object being pulled apart, such as a stretched elastic band, is subject to tensile stress and may undergo elongation. An object being pushed together, such as a crumpled sponge, is subject to compressive stress and may undergo shortening. The greater the force and the smaller the cross-sectional area of the body on which it acts, the greater the stress. Stress has units of force per area, such as newtons per square meter (N/m²) or pascal (Pa).
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A new optical spectrometer has been made super-compact thanks to a metalens that focuses light at multiple wavelengths. The new device can detect spectra with a resolution of 1 nm, and unlike its bulkier predecessors, it could be integrated onto a chip.
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Laser speckle imaging could help determine whether a donor heart is eligible for transplantation.
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Astrobiology is a scientific field within the life and environmental sciences that studies the origins, early evolution, distribution, and future of life in the universe by investigating its deterministic conditions and contingent events. As a discipline, astrobiology is founded on the premise that life may exist beyond Earth.
Research in astrobiology comprises three main areas: the study of habitable environments in the Solar System and beyond, the search for planetary biosignatures of past or present extraterrestrial life, and the study of the origin and early evolution of life on Earth.
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Research in astrobiology comprises three main areas: the study of habitable environments in the Solar System and beyond, the search for planetary biosignatures of past or present extraterrestrial life, and the study of the origin and early evolution of life on Earth.
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Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and maintain environments hospitable to life. Life may be generated directly on a planet or satellite endogenously or be transferred to it from another body, through a hypothetical process known as panspermia. Environments do not need to contain life to be considered habitable nor are accepted habitable zones (HZ) the only areas in which life might arise.
As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favorable to life's flourishing. Of particular interest are those factors that have sustained complex, multicellular organisms on Earth and not just simpler, unicellular creatures. Research and theory in this regard is a component of a number of natural sciences, such as astronomy, planetary science and the emerging discipline of astrobiology.
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As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favorable to life's flourishing. Of particular interest are those factors that have sustained complex, multicellular organisms on Earth and not just simpler, unicellular creatures. Research and theory in this regard is a component of a number of natural sciences, such as astronomy, planetary science and the emerging discipline of astrobiology.
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Low-intensity pulsed ultrasound combined with microbubbles opens the blood–brain barrier to deliver chemotherapy drugs to brain tumours.
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Machine learning framework can improve diagnostic accuracy, predict therapy response and tailor treatments for patients with colorectal cancer.
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A new diagnostic tool based on optical frequency comb technology can rapidly test for COVID-19 in exhaled breath.
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In-beam MRI could one day provide real-time feedback on the beam range and energy deposition during proton therapy treatments.
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