نتایج جستجو برای: negative entropy
تعداد نتایج: 598396 فیلتر نتایج به سال:
Time and temperature dependence of the binding of 3H-dihydroalprenolol (3H-DHA) to beta-adrenergic receptors in rat cerebral cortex is described. The kinetic data obtained suggest that 3H-DHA binding proceeds through a two-step reaction scheme consisting of a bimolecular association step followed by an unimolecular internal conversion of the radioligand receptor complex (isomerisation). Equilib...
this paper gives an alternative model of continuous health tests that allows us to drastically reduce the error rates; that is, it allows us to better detect when a noise source has degraded to the point where it imperils security, while at the same time reducing the number of false alarms. The current NIST SP 800-90B draft proposes a model for an entropy source. In this model, there is a noise...
The allosteric coupling free energy between ligands fructose-6-phosphate (Fru-6-P) and phospho(enol)pyruvate (PEP) for phosphofructokinase-1 (PFK) from the moderate thermophile, Bacillus stearothermophilus (BsPFK), results from compensating enthalpy and entropy components. In BsPFK the positive coupling free energy that defines inhibition is opposite in sign from the negative enthalpy term and ...
Title of dissertation: VACUUM ENTANGLEMENT AND BLACK HOLE ENTROPY OF GAUGE FIELDS William Donnelly, Doctor of Philosophy, 2012 Dissertation directed by: Professor Theodore Jacobson Department of Physics Black holes in general relativity carry an entropy whose value is given by the Bekenstein-Hawking formula, but whose statistical origin remains obscure. Such horizons also possess an entanglemen...
The problem with the temperature dependence of the Casimir force is investigated. Specifically, the entropy behavior in the low temperature limit, which caused debates in the literature, is analyzed. It is stressed that the behavior of the relaxation frequency in the T-->0 limit does not play a physical role since the anomalous skin effect dominates in this range. In contrast with the previous ...
In water, glucagon exists in an equilibrium between a trimer in which more than half of the peptide groups are in an alpha-helical configuration and a monomer which has a random coil configuration with few alpha-helical residues. The thermodynamics of this self-association have been evaluated by studying the temperature- and concentration-dependence of the mean residue ellipticity at 220 nm. Th...
We show that the recent discovery of negative (conditional) quantum entropy reveals that measurement in quantum mechanics is not accompanied by the collapse of a wavefunction or a quantum jump. Rather, quantum measurement appears as a sequence of unitary operations which are reversible in principle , although ususally not in practice. The probabilistic nature of quantum measurement emerges from...
Dyeing properties of compounded polyethylene terephthalate fibers with a polyesteramide hyperbranched polymer were investigated in terms of their thermodynamic parameters, including standard affinity -Δμ⁰, enthalpy change ΔH⁰ and entropy change ΔS⁰. Results were then compared with corresponding properties of the virgin PET. The results showed that the isotherms were similar to that of virgin PE...
Rewards typically express desirabilities or preferences over a set of alternatives. Here we propose that rewards can be defined for any probability distribution based on three desiderata, namely that rewards should be realvalued, additive and order-preserving, where the latter implies that more probable events should also be more desirable. Our main result states that rewards are then uniquely ...
Paul Davies (Physics Today, August 2020, page 34) states, “The synthesis of [Claude] Shannon’s information theory and thermodynamics led to the identification as negative entropy.” The second law states that overall result any real physical process leads an increase entropy, or in ideal process, entropy remains constant, but there is no decrease entropy. If then destroys some somewhere, preserv...
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