Results 121 to 130 of about 3,179,308 (368)

Homogeneous and locally homogeneous solutions to symplectic curvature flow [PDF]

open access: yes, 2012
J. Streets and G. Tian recently introduced symplectic curvature flow, a geometric flow on almost K\"ahler manifolds generalising K\"ahler-Ricci flow.
Julian Pook   +1 more
core  

Synthesis and NMR characterization of a spirosilole tetra-anion: a homogeneous four-electron reductant

open access: yesMain Group Metal Chemistry, 2018
The development of highly selective homogeneous electron transfer reagents is highly desirable for synthetic chemistry. An isolable spirosilole tetra-anion described in this paper has been proved to be a promising soluble electron transfer reagent.
Han Zhengang   +4 more
doaj   +1 more source

Homogeneity by Isotopy [PDF]

open access: yesProceedings of the American Mathematical Society, 1979
Answered is a question asked by Daverman, Bull. Amer. Math. Soc. 84 (1978), 377-405. It is whether a 2-sphere Σ \Sigma is tame if each isotopy on Σ \Sigma extends to an isotopy of E 3 {E^3} ?
openaire   +1 more source

Semi‐automated hippocampal avoidance whole‐brain radiotherapy planning

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Hippocampal avoidance whole‐brain radiotherapy (HA‐WBRT) is designed to spare cognitive function by reducing radiation dose to the hippocampus during the treatment of brain metastases. Current manual planning methods can be time‐consuming and may vary in quality, necessitating the development of automated approaches to streamline ...
Dong Joo Rhee   +9 more
wiley   +1 more source

Photocatalytic Hydrogen Evolution by tris-dithiolene tungsten complexes

open access: yesOpen Chemistry, 2016
Herein, we report on the homogeneous photocatalytic evolution of hydrogen by using as reductive catalysts the prismatic symmetric tris – dithiolene complexes of the tungsten, namely [W{S2C2(Ph)2}3] (1) and its monoanion [W{S2C2(Ph)2}3](TBA) (2).
Koutsouri Eugenia   +1 more
doaj   +1 more source

Advantages and limitations of navigation‐based multicriteria optimization (MCO) in selectively sparing pharyngeal constrictor muscles in head and neck radiotherapy treatment planning

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Sparing pharyngeal constrictor muscles (PCMs) during radiotherapy improves patient‐reported swallowing function. This study aimed to explore the feasibility of integrating knowledge‐based planning (KBP) with multicriteria optimization (MCO) in Eclipse v18.0 to selectively spare PCM, quantify the required trade‐off in prophylactic ...
Laura K. Howard   +3 more
wiley   +1 more source

On coherent configuration of circular-arc graphs [PDF]

open access: yesCommunications in Combinatorics and Optimization
For any graph, Weisfeiler and Leman assigned the smallest matrix algebra which contains the adjacency matrix of the graph. The coherent configuration underlying this algebra for a graph $\Gamma$ is called the coherent configuration of $\Gamma ...
Fatemeh Raei Barandagh   +1 more
doaj   +1 more source

The edge visualization metric: Quantifying the improvement of lung SBRT target definition with 4D CBCT

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Four‐dimensional cone‐beam CT (4D CBCT) incorporates oversampling of 3D data to reconstruct multi‐phase CBCT data sets representing distinct phases of the breathing cycle based on a diaphragmatic correlate of respiratory motion. Motion artifacts and blurring can be reduced relative to three‐dimensional cone‐beam (3D CBCT), allowing ...
Colton Baley   +4 more
wiley   +1 more source

AAPM medical physics practice guideline 13.a: HDR brachytherapy, part B

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract The goal of this report is to assist the clinical medical physicist in assuring that key quality standards and practice considerations are met to ensure safe, reliable, and reproducible high dose rate (HDR) brachytherapy (BT) treatment. This guideline has been developed to provide appropriate minimum standards for such services.
Susan L. Richardson   +8 more
wiley   +1 more source

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