Richard J. Thompson

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We obtain the class N A of noncommutative cylindric algebras from the class CA of cylindric algebras by weakening the axiom C 4 of commuta-tivity of cylindrifications (to C * 4 , see below, and we obtain N CA from CA by omitting C 4 completely). Some motivation for studying noncommutative cylindric algebras: Noncommutative cylindric algebras (N A's) have(More)
Sinistral, or left-sided, portal hypertension is a rare cause of upper gastrointestinal haemorrhage. There are many causes of sinistral portal hypertension. The primary pathology usually arises in the pancreas and results in compression of the pancreatic vein. This compression causes backpressure in the left portal venous system and subsequent gastric(More)
Measurement and analysis of titanium monoxide spectra in laser-induced plasma " , Normal and diseased personal eye modeling using age-appropriate lens parameters " " Investigation of atypical molten pool dynamics in tungsten carbide-cobalt during laser deposition using in-situ thermal imaging " , Appl. Crystallization studies on rare-earth co-doped(More)
BACKGROUND Pulmonary nodules remain a diagnostic challenge for physicians. Minimally invasive biopsy methods include bronchoscopy and CT guided transthoracic needle aspiration (TTNA). A novel electromagnetic guidance transthoracic needle aspiration (ETTNA) procedure which can be combined with navigational bronchoscopy (NB) and endobronchial ultrasound(More)
Patient reported quality of life (QOL) outcomes are important tools for measuring the success of surgical intervention. This is of particular relevance in benign disease when surgery is specifically indicated primarily to treat symptoms and improve QOL. In upper gastrointestinal disease, common conditions such as achalasia, gastro-oeosphageal reflux disease(More)
This study investigated the reliability and accuracy of self-regulated recovery time and performance during repeated sprinting. On 4 occasions, 14 men (24.5 ± 5.0 years) completed 10 × 6 seconds cycle sprints against 7.5% body mass, self-regulating (SR) recovery time to maintain performance. Subjects then repeated the test, but with a reduced recovery (RR)(More)
Patients with the 1p/19q co-deletion (n=13) had a median survival of 74 months (95% CI 21-127 months), while those without the co-deletion (n=7) had a median survival of 60 months (95% 47-74 months) although the difference was not significant to the small size of this preliminary dataset (p=0.782). DISCUSSION Our review of anaplastic oligodendroglial(More)
A solution procedure for the fully coupled Navier–Stokes and Maxwell equations is described. The approach implements a conservative fluid formulation in which the Lorentz body force and Ohmic heating terms are recast as convective terms. This removes explicit sources from the fluid equations, which have previously introduced severe stiffness and demanded a(More)