Chamber basis of the Orlik-Solomon algebra and Aomoto complex

We introduce a basis of the Orlik-Solomon algebra labeled by chambers, so called chamber basis. We consider structure constants of the Orlik-Solomon algebra with respect to the chamber basis and prove that these structure constants recover D. Cohen's minimal complex from the Aomoto complex.Comment: 16 page

'Education, education, education' : legal, moral and clinical

This article brings together Professor Donald Nicolson's intellectual interest in professional legal ethics and his long-standing involvement with law clinics both as an advisor at the University of Cape Town and Director of the University of Bristol Law Clinic and the University of Strathclyde Law Clinic. In this article he looks at how legal education may help start this process of character development, arguing that the best means is through student involvement in voluntary law clinics. And here he builds upon his recent article which argues for voluntary, community service oriented law clinics over those which emphasise the education of students

Search for Neutrinoless Double- β Decay with the Complete EXO-200 Dataset

A search for neutrinoless double-β decay (0νββ) in Xe136 is performed with the full EXO-200 dataset using a deep neural network to discriminate between 0νββ and background events. Relative to previous analyses, the signal detection efficiency has been raised from 80.8% to 96.4±3.0%, and the energy resolution of the detector at the Q value of Xe136 0νββ has been improved from σ/E=1.23% to 1.15±0.02% with the upgraded detector. Accounting for the new data, the median 90% confidence level 0νββ half-life sensitivity for this analysis is 5.0×1025 yr with a total Xe136 exposure of 234.1 kg yr. No statistically significant evidence for 0νββ is observed, leading to a lower limit on the 0νββ half-life of 3.5×1025 yr at the 90% confidence level

Callus culture and somatic embryogenesis of tropical anf subtropical maize and maize-Tripsacum hybrids

somatic embryogenesis tested in several maize and maize-trypsacum line

Sn Content and Alloying Effects in ITER Nb3Sn Strand

The optimization of ITER Nb3Sn bronze-processed composite strand has been accomplished through both advancements in mechanical drawing of the strand to fine filament sizes and progress in optimizing the quality of the Nb3Sn superconducting layer. Despite the advancements, further improvement of the Nb3Sn layer would be desirable in terms of increasing the performance envelope (and thereby the operating margin) of the magnets in both field and temperature. This can be done by (1) increasing the H(T) superconducting envelope, and/or (2) reducing the H(T) superconducting transition breadth, which is inherently large due to the presence of Sn gradients imposed by the diffusional nature of the heat treatment reaction. In recent DC high-field measurements of the resistive superconducting transition down to 1.4 Kelvin (K), a Ta-doped and a Ti-doped ITER Nb3Sn conductor are shown to have almost identical “best bit” upper critical field (Hc2) values at 0 K, but significantly different transition widths. Both conductors have a maximum µ0Hc2(0) = 29.5±0.1 Tesla (T), but the Ta-doped wire has a 0 K Hc2 distribution of 2.8 T, while the Ti-doped wire has a 0 K Hc2 distribution of 2.0 T. We explain this result in terms of the Sn supply and Sn distribution in the bronze-route geometry. In the same set of measurements, a bulk, binary Nb3Sn needle with a wide range of chemical homogeneity is shown to have almost identical H(T) properties to the commercial ITER wires. This result is surprising since the ternary additions (Ti or Ta) in the commercial wires are expected to enhance Hc2 by at least one Tesla. We compare the performance of this inhomogeneous bulk needle to chemically homogeneous binary and ternary bulk samples

Effects of seated and standing cold water immersion on recovery from repeated sprinting

This study investigated the effects of two different hydrostatic pressures (seated or standing) during cold water immersion at attenuating the deleterious effects of strenuous exercise on indices of damage and recovery. Twenty four male well-trained games players (age 23 ± 3 years; body mass 81.4 ± 8.7 kg: [Formula: see text]O2max 57.5 ± 4.9 ml∙kg-1∙min-1) completed the Loughborough Intermittent Shuttle Test (LIST) and were randomly assigned to either a control, seated cold water immersion or a standing cold water immersion (14 min at 14°C). Maximal isometric voluntary contraction, counter-movement jump, creatine kinase, C-reactive protein, interleukin-6 and delayed onset muscle soreness (DOMS) were measured before and up to 72 h following the LIST. All dependent variables showed main effects for time (P < 0.05) following the LIST, indicating physiological stress and muscle damage following the exercise. There were no significant group differences between control and either of the cold water immersion interventions. Seated cold water immersion was associated with lower DOMS than standing cold water immersion (effect size = 1.86; P = 0.001). These data suggest that increasing hydrostatic pressure by standing in cold water does not provide an additional recovery benefit over seated cold water immersion, and that both seated and standing immersions have no benefit in promoting recovery following intermittent sprint exercise