When the only geno-identical donor is a minor child with autistic type disorders, the question of consent arises. Reflection on the decision to transplant bone marrow in this specific context.
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Exploring the boundary of quantum correlations with a time-domain optical processor.
Sci Adv
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CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China.
Contextuality is a hallmark feature of the quantum theory that captures its incompatibility with any noncontextual hidden-variable model. The Greenberger-Horne-Zeilinger (GHZ)-type paradoxes are proofs of contextuality that reveal this incompatibility with deterministic logical arguments. However, the GHZ-type paradox whose events can be included in the fewest contexts and that brings the strongest nonclassicality remains elusive.
View Article and Find Full Text PDFTensor networks enable the calculation of turbulence probability distributions.
Sci Adv
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Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853, USA.
Predicting the dynamics of turbulent fluids has been an elusive goal for centuries. Even with modern computers, anything beyond the simplest turbulent flows is too chaotic and multiscaled to be directly simulatable. An alternative is to treat turbulence probabilistically, viewing flow properties as random variables distributed according to joint probability density functions (PDFs).
View Article and Find Full Text PDFSubunit-specific conductance of single homomeric and heteromeric HCN pacemaker channels at femtosiemens resolution.
Proc Natl Acad Sci U S A
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Institut für Physiologie II, Universitätsklinikum Jena, Friedrich-Schiller-Universität Jena, Jena 07740, Germany.
In mammals, the four subunit isoforms HCN1-4 assemble to form functional homotetrameric and heterotetrameric hyperpolarization-activated cyclic nucleotide-modulated (HCN) ion channels. Despite the outstanding relevance of HCN channels for organisms, including generating electrical rhythmicity in cardiac pacemaker cells and diverse types of brain neurons, key channel properties are still elusive. In particular, the unitary conductance, of HCN channels is highly controversial.
View Article and Find Full Text PDFQuantum Thermodynamic Derivation of the Energy Resolution Limit in Magnetometry.
Phys Rev Lett
December 2024
University of Crete, Department of Physics, Heraklion 70013, Greece.
It was recently demonstrated that a multitude of realizations of several magnetic sensing technologies satisfy the energy resolution limit, which connects a quantity composed by the variance of the magnetic field estimate, the sensor volume and the measurement time, and having units of action, with ℏ. A first-principles derivation of this limit is still elusive. We here present such a derivation based on quantum thermodynamic arguments.
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