Results 81 to 90 of about 4,863,171 (382)
Celestial Reference Frames [PDF]
International Astronomical Union Colloquium, 1980 AbstractA celestial reference frame is based on some dynamical or kinematic approximation of an absolute coordinate system and is materialized by a fundamental catalogue of stars. It is characterized by the accuracy of the system and the precision of its stellar realization.The present situation, marked by the construction of the FK5 system and ...
openaire +2 more sources
Gauge transformation through an accelerated frame of reference
, 2009 The Schr\"{o}dinger equation of a charged particle in a uniform electric field can be specified in either a time-independent or a time-dependent gauge.
Ashish Shukla +4 more
core +1 more source
FEBS Letters, EarlyView.The S1025 peptide is the major antidote to the YrzI toxin, which we renamed here as SpyT (Small Peptide YrzI Toxin) and SpyA (Small Peptide YrzI Antitoxin) (1). Degradation of the toxin–antitoxin spyTA mRNA, either by a translation‐dependent cleavage by the endoribonuclease Rae1 (2) or by direct attack by 3′‐exoribonucleases (3), also contributes to ...
Laetitia Gilet +4 more
wiley +1 more source
Why Not Just Features? Reconsidering Infants’ Behavior in Individuation Tasks
Frontiers in Psychology, 2020 It counts as empirically proven that infants can individuate objects. Object individuation is assumed to be fundamental in the development of infants’ ontology within the object-first account.
Frauke Hildebrandt +2 more
doaj +1 more source
Status of the International Gravity Reference System and Frame
Journal of Geodesy, 2021 The increasing importance of terrestrial gravimetry in monitoring global change processes, in providing a reference for satellite measurements and in applications in metrology necessitates a stable reference system reflecting the measurement accuracy ...
H. Wziontek +7 more
semanticscholar +1 more source
Quantum communication using a bounded-size quantum reference frame
, 2009 Typical quantum communication schemes are such that to achieve perfect decoding the receiver must share a reference frame with the sender. Indeed, if the receiver only possesses a bounded-size quantum token of the sender's reference frame, then the ...
Barnum H +10 more
core +2 more sources
FEBS Letters, EarlyView.α2 → 8 polysialic acid elicits poor immunogenicity. Small‐angle scattering shows a supramolecular structure with parallel‐chain binding, although in different forms at μm and mm calcium. The major histocompatibility complex requires molecular weights around 2000 Da to produce antibodies, and 2000 Da polysialic oligomers will bind in these structures ...
Kenneth A. Rubinson
wiley +1 more source
St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021 A modification of the covariant theory based on the concept of the proper mass (mass distribution) of the system is proposed. The proper mass is a special dynamic quantity that forms a fundamental frame of reference for measuring proper time and spatial
Gorobey Natalia +2 more
doaj +1 more source
The Michelson-Morley experiment in an accelerated reference frame [PDF]
, 2010 We analyze the Michelson-Morley experiment in a reference frame moving with constant proper acceleration. Interestingly, we find an expected fringe shift which depends not only on the interferometer's rate of acceleration, but also on its speed relative to a preferred absolute reference frame.
arxiv +1 more source
Communicating without shared reference frames [PDF]
Phys. Rev. A 99, 052315 (2019), 2018 We generalize a quantum communication protocol introduced by Bartlett et al. [New. J. Phys. 11, 063013 (2009)] in which two parties communicating do not share a classical reference frame, to the case where changes of their reference frames form a one-dimensional noncompact Lie group.
arxiv +1 more source