DOT 3

Abstract: Despite a relatively 'uniform' fertile composition (Al2O3 = 2 center dot 19-4 center dot 47 wt %; Fo% = 89 center dot 2 +/- 0 center dot 3%; Cr#(Spl) = 8 center dot 9 +/- 1 center dot 5%), the Montferrier peridotite xenoliths show a wide range of S contents (22-590 ppm). Most sulphides are interstitial and show peculiar pyrrhotite-pentlandite intergrowths and low abundances of Cu-rich phases. Sulphide-rich samples are characterized by strong enrichment in the light rare earth elements and large ion lithophile elements without concomitant enrichment of the high field strength elements. Such trace-element fractionation is commonly ascribed to metasomatism by volatile-rich melts and/or carbonatitic melts. S and Se (11-67 ppb), as well as S/Se (up to approximate to 12 000), are correlated with La/Sm. Cu, however, remains broadly constant (30 +/- 5 ppm). These features strongly suggest that the percolation-reaction of such volatile-rich fluids has led to sulphide enrichment with an atypical signature marked by strong fractionation of the chalcophile elements (i.e. S vs Se and Cu). S-rich xenoliths are also characterized by high (Pd/Ir)(N) (1 center dot 2-1 center dot 9; where subscript N indicates normalized to chondrite), (Pd/Pt)(N) between 1 center dot 5 and 2 center dot 2, and (Os/Ir)(N) up to 1 center dot 85. Despite the relative uniform fertile composition of the xenoliths, Re/Os ranges between 0 center dot 02 and 0 center dot 18. Os-187/Os-188 is extremely variable even within a single sample and can be as high as 0 center dot 1756 for the most S-rich samples. Sulphides show highly fractionated and variable abundances of the highly siderophile elements (HSE) [0 center dot 03 (Pd/Ir)(N) 0 center dot 17) would imply that such fluids are derived from an uncommon type of mantle source possibly related to carbonatite melts.

Abstract: Background Treatment of abdominal aortic aneurysm (AAA) has changed over time, with endovascular repair (EVAR) being the main technical revolution. This study assessed the effect of this change on outcome on a national basis over a 17-year interval. Methods Primary infrarenal AAA repairs in Swedish residents aged 50 years and older, in the Swedish Vascular Registry (Swedvasc) 19942010, were analysed. The rate per 100 000 population, patient characteristics, operative technique and outcome were assessed for the intervals 19941999, 20002005 and 20062010. Results Some 11 336 intact aneurysm repairs were performed. The overall rate per 100 000 increased (18 center dot 4 in 19941999, 19 center dot 4 in 20002005 and 24 center dot 0 in 20062010; P < 0 center dot 001), most noticeably among older people (18 per cent increase among those aged 5064 years, P = 0 center dot 004; 27 per cent in 6579-year-olds, P < 0 center dot 001; 128 per cent in those aged at least 80 years, P < 0 center dot 001). The use of EVAR increased rapidly after 2005 (rate: 0 center dot 6 in 19941999, 4 center dot 4 in 20002005 and 11 center dot 8 in 20062010; P < 0 center dot 001). The 30-day mortality rate decreased after open repair (4 center dot 7, 3 center dot 4 and 2 center dot 7 per cent respectively; P < 0 center dot 001), but was stable after EVAR (2 center dot 6, 2 center dot 2 and 1 center dot 6 per cent; P = 0 center dot 227). Some 4972 ruptured aneurysm (rAAA) repairs were performed. The rate decreased after 2005 (9 center dot 3 in 19931999, 9 center dot 3 in 20002005 and 8 center dot 4 in 20062010; P = 0 center dot 006). The use of EVAR for rAAA increased over time (rate: 0, 0 center dot 5 and 1 center dot 6 respectively; P < 0 center dot 001), whereas open repair decreased (9 center dot 3, 8 center dot 8 and 6 center dot 8; P < 0 center dot 001). Thirty-day mortality decreased over time (38 center dot 3, 32 center dot 8 and 28 center dot 4 per cent; P < 0 center dot 001). Conclusion The introduction of EVAR has been associated with an increased number of intact AAA repairs, which has accelerated recently, whereas the rate of rAAA repair has started to decline. Simultaneously, outcomes have improved.

Abstract: By slow evaporation of solutions containing UO2(ClO4)(2) and an excess of HClO4, single crystals of [UO2(ClO4)(2)(H2O)(3)] (1) and [UO2(H2O)(5)](ClO4)(2) (2) were obtained and their structures were ...

Abstract: Features of the life history of Himantura astra from north-east Australia were examined including its age and growth, reproduction and diet. Centrum edge and marginal increment ratio analyses were used to validate annual band formations with the Gompertz growth function providing the best fit to male (W-D infinity = 722 center dot 7 mm, k = 0 center dot 104) and female (W-D infinity = 821 center dot 8 mm, k = 0 center dot 073) disc width (W-D)-at-age data. At 29 years, the maximum age of females was higher than males (18 years). Sizes at 50% sexual maturity (W-D50) for males and females were 469 center dot 3 and 462 center dot 3 mm, respectively. Ages at sexual maturity (A(M50)) were reported at 7 center dot 32 (males) and 8 center dot 67 (females) years. An index of relative importance (I-RI) revealed carid shrimps (77 center dot 9%), brachyurans (12 center dot 1%) and stomatopods (4 center dot 9%) as the most important prey groups, with prey diversity increasing with W-D from 0 center dot 92 to 1 center dot 63 (Shannon-Weiner index). This study provides significant insights into the biology of H. astra and contributes to the ongoing development of fisheries-based risk assessments for this species.