Results 61 to 70 of about 408,529 (289)
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose In proton radiotherapy, the stopping power ratio (SPR) of non‐biological materials must be independently measured with proton beams for accurate dose calculation. Small‐size chemo‐ports challenge the measurement. The purpose of this work is to measure the SPR of chemo‐ports by using the energy spectra of the proton pencil beams ...
Rosette Gonzalez +3 more
wiley +1 more source
Controlling transport of underdamped particles in two-dimensional driven Bravais lattices
Physical Review Research, 2020 We demonstrate the directed transport of underdamped particles in two-dimensional lattices of arbitrary geometry driven by an unbiased AC driving force.
Aritra K. Mukhopadhyay, Peter Schmelcher
doaj +1 more source
Symmetries in Riemann-Cartan Geometries [PDF]
SIGMA 20 (2024), 078, 20 pagesRiemann-Cartan geometries are geometries that admit non-zero curvature and torsion tensors. These geometries have been investigated as geometric frameworks for potential theories in physics including quantum gravity theories and have many important differences when compared to Riemannian geometries.
arxiv +1 more source
Parabolic Symmetric Spaces [PDF]
Annals of Global Analysis and Geometry, Vol. 37, Issue 2,2010,
125-141, 2009 We study here systems of symmetries on $|1|$--graded parabolic geometries. We are interested in smooth systems of symmetries and we discuss non--flat homogeneous $|1|$--graded geometries. We show the existence of an invariant admissible affine connection under quite weak condition on the system.
arxiv +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study quantitatively evaluates bladder changes and their dosimetric impact during the on‐couch adaptive process on a commercial CBCT‐based online adaptive radiotherapy (CT‐gART) platform. Methods Data from 183 fractions of ten patients receiving online ART for pelvic cancers were analyzed retrospectively.
Ingrid Valencia Lozano +7 more
wiley +1 more source
Bis(catecholato-κ2O,O′)bis(dimethyl sulfoxide-κO)titanium(IV)
Acta Crystallographica Section E: Crystallographic Communications, 2022 Bis(benzene-1,2-diolato-κ2O,O′)bis(dimethyl sulfoxide-κO)titanium(IV), [Ti(C6H4O2)2(C2H6OS)2], crystallizes with two crystallographically independent molecules in the space group P21/c emulating orthorhombic Pbca symmetry (β = 90.0445 (9)°].
Nisansala Hewage +3 more
doaj +1 more source
Symmetry of Square Contingency Tables Using Simplicial Geometry
Austrian Journal of StatisticsTwo-way contingency tables illustrate the relationship between two discrete variables. Their corresponding probability tables can be regarded as an element in a simplex.
Keita Nakamura +2 more
doaj +1 more source
F-theory on quotients of elliptic Calabi-Yau threefolds
Journal of High Energy Physics, 2019 In this work we consider quotients of elliptically fibered Calabi-Yau threefolds by freely acting discrete groups and the associated physics of F-theory compactifications on such backgrounds.
Lara B. Anderson +2 more
doaj +1 more source
Constant Mean Curvature n-noids with Platonic Symmetries [PDF]
arXiv, 2007 Constant Mean Curvature n-noids with Platonic ...
arxiv
Elasticity of Diametrically Compressed Microfabricated Woodpile Lattices
Advanced Engineering Materials, EarlyView.Modulus–porosity relationship is derived for woodpile lattices with struts under diametrical compression. The formula presented here that Young's modulus is proportional to the square of the volume fraction E˜ρ2$E \sim \left(\rho\right)^{2}$ is shown to be consistent with computations and laboratory experiments on 3D‐printed samples.
Faezeh Shalchy, Atul Bhaskar
wiley +1 more source