The PROPELLER sequence is clinically used for T2 and DW imaging and can be motion corrected. Parallel imaging techniques have been used in axial PROPELLER imaging to effectively widen the blade, thus reducing motion artifacts and improving general image quality. However, parallel imaging is not suitable for all image orientations with all available coils (e.g. PROPELLER spine imaging). We propo...

We compared two methods of 3D digital subtraction angiography (DSA)--propeller and standard rotation--for the assessment of aneurysmal morphology and its relation to neighboring vessels. Aneurysms were correctly visualized and localized with both techniques. 3D DSA with propeller rotation technique seems to be effective and allows us to reduce the amount of contrast material related to a shorte...

The coframe (teleparallel) description of gravity is known as a viable alternative to GR. One of advantages of this model is the existence of a conserved energy-momentum current witch is covariant under all symmetries of the threeparameter Lagrangian. In this paper we study the relation between the covector valued current and the energy-momentum tensor. Algebraic properties of the conserved cur...

A new method for computing all elements of the lattice quark propagator is proposed. The method combines the spectral decomposition of the propagator, computing the lowest eigenmodes exactly, with noisy estimators which are ‘diluted’, i.e. taken to have support only on a subset of time, space, spin or colour. We find that the errors are dramatically reduced compared to traditional noisy estimat...

The efficient representation and manipulation of time information is key to any successful implementation of a verification tool. We extend the syntax and semantics of the higher level specification language Promela to include constructs and statements based on the model of timed Bfichi automata [2]. We implement these extensions on top of the verification tool Spin.

WMSSM = h u ijQi ·HiUj + hijQi ·HdD̄j + hijLi ·HdĒj + μHu ·Hd. (1) (1) has been constructed so as to conserve R-parity (even for particles, odd for sparticles) Rp ≡ (−1), B, L and s being baryon no., lepton no. and spin. This is equivalent to the conservation of matter parity which transforms the superfields as (Li, Ēi, Qi, Ūi, D̄i) → −(Li, Ēi, Qi, Ūi, D̄i), (Hu, Hd, Vγ, VZ , V + W , V − W ) → (Hu...

OpenProp is an open-source code suite that can be used for the design, analysis, and fabrication of optimized propellers and horizontal-axis turbines. The numerical model is based on propeller lifting line theory, which is used in parametric design codes employed by the U.S. Navy as well as commercial designers. OpenProp is written in Matlab M-code, which is widely used in academia and industry...

The presence of broken ice in the flow field around a propeller causes severe blade erosion, shafting, and hull vibration. This study investigates performance ship sailing polar regions under propeller–ice non-contact condition. To this end, we construct test platform for propeller-induced excitation force due to blockage large circulating water channel. hydrodynamic load propeller, cavitation ...

Introduction: Fast Spin Echo (FSE) could suffer from the non-CPMG condition that results in destructive echo interference, unstable echo train and signal cancellation. Diffusion-weighted (DW) PROPELLER [1], an FSE-based sequence, mitigates the non-CPMG issue by XY phase cycling [1] combined with split-blade acquisition [2]. However, XY phase cycling requires refocus flip angle be close to 180° ...

 ABSTRACT Background: The transverse rectus abdominis musculocutaneous (TRAM) flap remains the gold standard for postmastectomy reconstruction either immediate or delayed. However, transfer of TRAM flap can be associated with donor site morbidities and complications in flap. A successful reconstruction consists of careful patient selection, surgical technique and meticulous preoperative plannin...