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Introduction. Let k be a field of characteristic not two and G a connected linear reductive k-group. By a k-involution θ of G, we mean a k-automorphism θ of G of order two. For k = R, C or an algebraically closed field, such involutions have been extensively studied emerging from different interests. As manifested in [8, 18, 28], the interactions with the(More)
An algorithm is proposed, which combines Zero-pole Model and Hough Transform (HT) to detect singular points. Orientation of singular points is defined on the basis of the Zero-pole Model, which can further explain the practicability of Zero-pole Model. Contrary to orientation field generation, detection of singular points is simplified to determine the(More)
BACKGROUND & AIMS The aim of this study was to compare the efficacy of radiofrequency ablation (RFA) with surgical resection (RES) in the treatment of small hepatocellular carcinoma (HCC). METHODS A total of 168 patients with small HCC with nodular diameters of less than 4 cm and up to two nodules were randomly divided into RES (n=84) and RFA groups(More)
[1] The properties of equilibrated tropical convection are studied using a cloud‐resolving model with large‐scale dynamics parameterized by the weak temperature gradient (WTG) approximation. Model integrations are performed in both 2‐D and 3‐D geometries. The target profile toward which horizontal mean free tropospheric temperature is relaxed is held fixed,(More)
Variations in deep convective activity during the 4-month TOGA-COARE field 1 campaign are simulated using a cloud-resolving model (CRM). The model is driven by 2 large-scale vertical velocities that are parameterized using one of two different methods: 3 the damped gravity wave method and the weak temperature gradient (WTG) method. 4 Observed temperature(More)
1 ABSTRACT 1 It is well known that vertical wind shear can organize deep convective systems 2 and greatly extend their lifetimes. We know much less about the influence of shear on the 3 bulk properties of tropical convection in statistical equilibrium. To address the latter 4 question, the authors present a series of cloud-resolving simulations on a doubly(More)
A bioflocculant-producing bacterium was isolated from soil and identified as Serratia ficaria. Using optimized culture conditions a flocculating activity of 95.4% was obtained. It was found to be effective for flocculation of a kaolin suspension over weakly acidic pH (5-7); divalent cations (Ca2+ and Mg2+) enhanced the flocculating activity, while the(More)
Aerobic granular sludge was cultivated in a sequencing batch reactor fed with brewery wastewater. After nine-week operation, stable granules with sizes of 2-7 mm were obtained. With the granulation, the SVI value decreased from 87.5 to 32 mL/g. The granular sludge had an excellent settling ability with the settling velocity over 91 m/h. Aerobic granular(More)