O ct 1 99 3 Unions of Cockcroft two - complexes W . A

Unions of Cockcroft Two-complexes

A combinatorial group-theoretic hypothesis is presented that serves as a necessary and suucient condition for a union of connected Cock-croft two-complexes to be Cockcroft. This hypothesis has a component that can be expressed in terms of the second homology of groups. The hypothesis is applied to the study of the third homology of groups given by generators and relators.

RTES-03 Interfaces.indd

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A method to individualize adaptive planning target volumes for deformable targets.

We have investigated a method to individualize the planning target volume (PTV) for deformable targets in radiotherapy by combining a computer tomography (CT) scan with multiple cone beam (CB)CT scans. All combinations of the CT and up to five initial CBCTs were considered. To exclude translational motion, the clinical target volumes (CTVs) in the CBCTs were matched to the CTV in the CT. PTVs i...

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Preparation and Characterization of Supported Molybdenum and Tungsten Schiff Base Complexes on MCM-41 as Nanocatalysts for the Epoxidation of Olefins

Two new heterogenized epoxidation nanocatalysts based on molybdenum and tungsten compounds were prepared withcovalent grafting of MCM-41 with 3-aminoropropyl trimethoxysilane and subsequent reaction with diphenylphosphinobenzaldehyde and complexation with M (Mo, W)O2(acac)2. X-ray diffraction and nitrogen sorption analyses revealed the preservation of the textural properti...