Results 41 to 50 of about 1,061,430 (341)
Born reciprocity and the 1/r potential
, 2007 Many structures in nature are invariant under the transformation (p,r)->(br,-p/b), where b is some scale factor. Born's reciprocity hypothesis affirms that this invariance extends to the entire Hamiltonian and equations of motion.
D. Clowe +19 more
core +1 more source
Quantum algebraic representation of localization and motion of a Dirac electron [PDF]
, 2001 Quantum algebraic observables representing localization in space-time of a Dirac electron are defined. Inertial motion of the electron is represented in the quantum algebra with electron mass acting as the generator of motion.
Jaekel, Marc-Thierry, Reynaud, Serge
core +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Bone tumours present significant challenges for affected patients, as multimodal therapy often leads to prolonged physical limitations. This is particularly critical during childhood and adolescence, as it can negatively impact physiological development and psychosocial resilience.
Jennifer Queisser +5 more
wiley +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou +10 more
wiley +1 more source
, 2001 Within the recently proposed Lorentz invariant formalism for description of neutrino spin evolution in presence of an arbitrary electromagnetic fields effects of matter motion and polarization are considered.Comment: Extended version of contribution to ...
Dvornikov, M. S. +3 more
core +2 more sources
Nonconservative Lagrangian Mechanics: A generalized function approach [PDF]
, 2003 We reexamine the problem of having nonconservative equations of motion arise from the use of a variational principle. In particular, a formalism is developed that allows the inclusion of fractional derivatives.
Dreisigmeyer, David W., Young, Peter M.
core +1 more source
Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley +1 more source
ANALYSIS OF DIFFICULTY LEVEL OF PHYSICS NATIONAL EXAMINATION’S QUESTIONS
Jurnal Pendidikan IPA Indonesia, 2016 This study aimed to determine: (1) the difficulty level of items in physics National Exam of 2013 (2) physics materials that were difficult and very difficult.
Yusrizal Yusrizal
doaj +1 more source
, 2011 An odd look at "standard" physics (Galileo, Newton, Einstein, Dirac) leading to a radical change of our concept of inertial motion and to new heuristic approaches of gravitation and the cosmological ...
Provost, Jean-Pierre
core +1 more source
Ontological physics-based motion planning for manipulation [PDF]
2015 IEEE 20th Conference on Emerging Technologies & Factory Automation (ETFA), 2015 IEEE 20th Conference on Emerging Technologies Factory Automation (ETFA ...
Ud Din, Muhayy +2 more
openaire +3 more sources