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Aragonite, breunnerite, calcite and dolomite in the CM carbonaceous chondrites : High fidelity recorders of progressive parent body aqueous alteration

Carbonate minerals in CM carbonaceous chondrite meteorites, along with the silicates and sulphides with which they are intergrown, provide a detailed record of the nature and evolution of parent body porosity and permeability, and the chemical composition, temperature and longevity of aqueous solutions. Fourteen meteorites were studied that range in petrologic subtype from mildly aqueously altered

Constraining the pressure threshold of impact induced calcite twinning : Implications for the deformation history of aqueously altered carbonaceous chondrite parent bodies

Calcite twinning in carbonaceous chondrite meteorites can be used to reconstruct the deformation history and the parent body environment during and/or after aqueous alteration, but the shock pressure threshold at which the twins develop is unknown. Accordingly, the aim of this study is to determine the magnitude of shock pressure that is needed to generate calcite twins. This was done by measuring

The oxygen isotope evolution of parent body aqueous solutions as recorded by multiple carbonate generations in the Lonewolf Nunataks 94101 CM2 carbonaceous chondrite

The CM2 carbonaceous chondrite LON 94101 contains aragonite and two generations of calcite that provide snapshots of the chemical and isotopic evolution of aqueous solutions during parent body alteration. Aragonite was the first carbonate to crystallize. It is rare, heterogeneously distributed within the meteorite matrix, and its mean oxygen isotope values are δ18O 39.9±0.6‰, δ17O -0.3±1.0‰ (1σ).

Clasts in the CM2 carbonaceous chondrite Lonewolf Nunataks 94101 : Evidence for aqueous alteration prior to complex mixing

Clasts in the CM2 carbonaceous chondrite Lonewolf Nunataks (LON) 94101 have been characterized using scanning and transmission electron microscopy and electron microprobe analysis to determine their degrees of aqueous alteration, and the timing of alteration relative to incorporation of clasts into the host. The provenance of the clasts, and the mechanism by which they were incorporated and mixed

The effects of meteorite impacts on the availability of bioessential elements for endolithic organisms

Meteorite impacts, one of the most ubiquitous processes in the solar system, have the ability to destroy as well as create habitats for life. The impact process can increase the translucency and porosity of the target substrate, as well as mobilize biologically relevant elements within the substrate. For endolithic organisms, this process has important implications, especially in extreme environme

Extended chronologies of aqueous alteration in the CM2 carbonaceous chondrites : Evidence from carbonates in Queen Alexandra Range 93005

The Antarctic CM2 carbonaceous chondrite QUE 93005 contains four compositionally distinct carbonates, namely breunnerite, calcite, dolomite and a Ca-poor dolomite. These carbonates can form monomineralic grains, or may be intergrown as bimineralic grains consisting of dolomite plus breunnerite and dolomite plus calcite, or polymineralic grains containing an intergrowth of breunnerite, Ca-poor dolo

A standardized crisis management model for self-harming and suicidal individuals with three or more diagnostic criteria of borderline personality disorder: The Brief Admission Skåne randomized controlled trial protocol (BASRCT) : Study Protocol

Background: Brief Admission is a crisis and risk management strategy in which self-harming and suicidal individuals with three or more diagnostic criteria of borderline personality disorder self-admit to hospital at times of increasing risk when other efforts to stay safe are failing. Standardized in the current randomized controlled trial, the intensity of Brief Admission Skåne is implemented in

Kinetics and mechanism of oxidation of the anti-tubercular prodrug isoniazid and its analog by iridium(IV) as models for biological redox systems

A complex reaction mechanism of oxidation of the anti-tubercular prodrug isoniazid (isonicotinic hydrazide, INH) by [IrCl6]2− as a model for redox processes of such drugs in biological systems has been studied in aqueous solution as a function of pH between 0 and 8.5. Similar experiments have been performed with its isomer nicotinic hydrazide (NH). All reactions are overall second-order, first-ordA complex reaction mechanism of oxidation of the anti-tubercular prodrug isoniazid (isonicotinic hydrazide, INH) by [IrCl6]2− as a model for redox processes of such drugs in biological systems has been studied in aqueous solution as a function of pH between 0 and 8.5. Similar experiments have been performed with its isomer nicotinic hydrazide (NH). All reactions are overall second-order, first-ord

Forskare: Årsredovisningar är en kulturell ritual

Årsredovisningar handlar inte bara om att kommunicera ett företags resultat och finansiella ställning utan även om att att upprätthålla förtroendet för finansmarknaden och kapitalismen. De fungerar mer som en ritual än som allsidig information, skriver forskarna Henrik Rahm och Peter Svensson.

Soluble plasma proteins ST2 and CD163 as early biomarkers of nephropathy in Swedish patients with diabetes, 15–34 years of age: a prospective cohort study

BackgroundThe aim of this study was to investigate plasma levels of sST2 and sCD163 to determine whether they at an early stage could predict development of diabetic nephropathy and/or diabetic retinopathy in patients at clinical onset.MethodsPatients diagnosed with diabetes mellitus at age 15–34 years between 1987 and 1988 (n = 220) were included. Data such as BMI, smoking, HbA1c and islet cell a

Gender, alexithymia and physical inactivity associated with abdominal obesity in type 1 diabetes mellitus: a cross sectional study at a secondary care hospital diabetes clinic

Background Obesity is linked to cardiovascular diseases and increasingly common in type 1 diabetes mellitus (T1DM) since the introduction of intensified insulin therapy. Our main aim was to explore associations between obesity and depression, anxiety, alexithymia and self-image measures and to control for lifestyle variables in a sample of persons with T1DM. Secondary aims were to explore associat

The Emerging Landscape of Urban Living Labs : Characteristics, Practices and Examples

There is a growing trend to involve citizens in city development to make urban areas more sustainable and livable. The urban living labs approach offers a way to foster new collaborative, trans-disciplinary ways of thinking in urban planning and development, and provides a real-world testing ground for urban innovation and transformation. This handbook aims to bring open innovation and co-creation

Malawian Prosthetic and Orthotic Users’ Mobility and Satisfaction with their Lower Limb Assistive Device

Objective: To investigate patients’ mobility and satisfaction with their lower limb prosthetic or orthotic device and related service delivery in Malawi and to compare groups of patients regarding type and level of device and demographics. Methods: Questionnaires were used to collect self-report data from 83 patients. Results: Ninety percent of prostheses or orthoses were in use by patients, but a

Graduates’ perceptions of prosthetic and orthotic education and clinical practice in Tanzania and Malawi

Background: Maintaining and improving the quality of prosthetics and orthotics education at the Tanzania Training Centre for Orthopaedic Technologists is essential for the provision of appropriate prosthetics and orthotics services in African countries.Objectives: To describe how Tanzanian and Malawian graduates’ of the Diploma in Orthopaedic Technology perceive their education and how it could be

Patients’ Satisfaction with Lower-limb Prosthetic and Orthotic Devices and Service delivery in Sierra Leone and Malawi

BACKGROUND People with disabilities have the right to personal mobility and available and affordable assistive technology, according to the Convention of Rights of Persons with Disabilities. Few studies have investigated overall satisfaction with prostheses fabricated using low-cost technology. Evidence-based recommendations for prosthetic and orthotic services in low-income countries are needed i

Challenging Hydro-hegemony: hydropolitics and local resistance in the Golan Heights and the Palestinian Territories

Hydro-hegemonic praxis defines much of Israel’s occupation that has continued since the signing of the Oslo Accords in 1993. Two empirical case studies of hydro-hegemony and counter-hegemony at local level are compared in this paper: the Israeli-occupied Golan Heights and the Israeli-occupied West Bank. Both case studies show that control over water resources and supply provides political power ov