Lead, zinc and copper mineralisation in basal Carboniferous sediments at Westwater, south Scotland

A zioneo f lead, zinc and copperm ineralisatioins developedo ver a minimum I of 4 km of strikeo f basal Carboniferoucse mentstoneg roup sedimentsa nd immediatelyu nderlyingB irrenswarkL avas atwestwater,n ear Laqholm in south Scotland. Grades so far obtained from sparse rock exposures and from shallow boreholes a fissure sulphides are usuallyO .l-O.j%o f combinedm etals over 1-2 m of thickness,bu t vein of higher grade and a relativelyt hick zone of disseminated were also located. Galena, sphalerite,c halcopyritea ndbaryte occur mainly in thin dolomitev eins but disseminationosf galenaa re also presenti n sandstoneu nits. The mineralisatioins of low temperaturet ype I was emplaceda long northeasterlyt rendingn ormal faultsa nd cross faults regardeda s late Carboniferouisn age. and Mineralisatiohna s been controlledb y faulting,r egionalf aciesv aziation and local lithologicalv ariationa s well as by stratigraphipco sition. These controlsa re applicablei n furthere xplorationo f Lower Carboniferourso cks in both south and central Scotland. The heavy mineral fraction of stream sediment is the optimums amplingt ype in reconnaissanceex plorationo f areas of calcareous . rocks such as the Lower Carboniferouso f south Scotlanda nd basal till sampling is the most effectivem ethod of follow-upe xplorationi n those areas where glaciald epositsa re widespreada nd often thick

Group identities benefit well-being by satisfying needs

Although research has highlighted the importance of differentiating between different types of social ties – group ties and individual ties – no experimental work exists that investigates the claim that group ties are more beneficial than individual ties, and little is known about how group memberships influence well-being, relative to relationships. We designed a series of experiments that: a) primed either multiple group memberships or multiple interpersonal relationships (vs. films) and observed the effects on participants’ induced negative moods (S1, N = 120); b) primed different types (S2, N = 317) and features (S3, N = 183) of groups and observed which led to the greatest increases in life satisfaction; and c) investigated whether feelings of connectedness and self-worth mediated these effects (S1-3). We found that priming relationships satisfied psychological needs and restored and enhanced well-being, but that priming group memberships did so to a greater extent, especially when participants reflected on the group’s identity rather than its members. This work contributes to our understanding of why multiple group memberships are beneficial, and highlights how important social identities associated with groups can be for well-being

Enterocolitis necrotizante en recién nacidos ingresados en el Servicio de Neonatología del Hospital Escuela "Carlos Roberto Huembes" en el período comprendido de Enero 2011 a Diciembre 2013

La enterocolitis necrotizante en el recién nacido presenta un amplio espectro de manifestaciones clínicas, caracterizándose principalmente por la tríada de distensión abdominal, sangramiento gastrointestinal y neumatosis intestinal. A pesar del avance en el cuidado intensivo neonatal, persiste como una enfermedad grave, que afecta habitualmente al recién nacido pretérmino, especialmente de muy bajo peso

The identities of employed students: striving to reduce distinctiveness from the typical student

Endorsement of the employed student identity can provide social support for employed students or protection from negative intergroup comparisons. However, not much is known about what identity aspects or characteristics comprise the employed student identity and how they become important and central to that identity. Using data from 215 employed university students in the UK, we investigated two research questions (RQ's) in this mixed-method study. RQ1. What are the identity aspects that participants ascribe to the employed student identity? RQ2. Are identity aspects that distinguish employed from non-employed students, and are considered more suitable for employed versus non-employed students, more central and more important to the employed students’ self-concept? A thematic analysis categorized the identity aspects that participants self-generated into 14 distinct categories, with the most important categories being hard-working, being organized, having motivation, and discipline. Multilevel analyses of identity aspects within individuals revealed that distinctiveness was negatively associated with the importance and centrality of aspects, whereas suitability for employed students was positively associated with the importance and centrality of aspects. We offer practical value through revealing important identity aspects which inoculate employed students against negative intergroup comparisons, and theoretical value through suggesting future avenues for employed students’ identity construction

Discipline identification, identity incompatibility, belonging and their association with deep approaches to learning and academic self-efficacy during COVID-19 in the UK

Previous research indicates that discipline identification — the level of integration of one’s discipline of study into the self-concept — is associated with deep approaches to learning and academic self-efficacy. However, it is not known whether these relationships would hold in the context of learning during the COVID-19 pandemic. The present study investigates this, as well as exploring whether belonging, identity incompatibility, and virtual and in-person time spent with fellow students and with faculty act as potential antecedents of discipline identification. A cross-sectional online survey with n = 385 students in the UK was conducted during the spring term (February–May) of the 2019–2020 academic year, when UK universities were under COVID-19 restrictions. Of those students, n = 109 completed a follow-up survey during the autumn term (September–December) of the 2020–2021 academic year. Due to pandemic-related changes, the two waves of data were analysed separately using path analysis. During the spring term, identity incompatibility and discipline identification were significantly associated with both deep approaches to learning and academic self-efficacy. There were also significant indirect effects of belonging on both deep approaches to learning and academic self-efficacy via discipline identification. During the autumn term, discipline identification was again significantly associated with both academic outcomes. Identity incompatibility was significantly associated with academic self-efficacy. There were also indirect effects of identity incompatibility and belonging on deep approaches to learning via discipline identification. These results add to the literature on the importance of discipline identification and associated social-psychological processes in predicting important higher education outcomes during the COVID-19 pandemic

Dividend Policies and Dividend Announcement Effects for Real Estate Investment Trusts

Previous research on real estate investment trusts (REITs) assumes that their dividend policies are determined solely by tax regulations. We observe, however, that REITs often pay out more dividends than are required by tax rules. This paper examines the dividend policies of REITs by drawing inferences from agency-cost theory and tests for the determinants of REIT dividend payout ratios. The study also considers whether the stock market responds differently to the dividend announcement effects of equity and mortgage REITs based on asymmetric information. Our results support agency-cost explanations for dividend policy and suggest a differential announcement effect. Copyright American Real Estate and Urban Economics Association.