We tested the hypothesis that children's ability to reflect on the causes of their uncertainty about a surprising claim allows them to better target their empirical investigation of that claim-and that this ability increases with age. We assigned 4-7-year-old children (=174, M= 68.77 months, 52.
View Article and Find Full Text PDFObjective: Individuals' Sense of Coherence (SOC) is measured with the Orientation to Life Questionnaire (OLQ-13). SOC reflects a person's orientation to life and ability to manage stress, which can impact health. The aim of the study was to test the reliability and construct validity of the OLQ-13, with self-reported general and oral health as criterion measures, in a Norwegian general adult population.
View Article and Find Full Text PDFWire-arc additive manufacturing (WAAM) is a promising industrial production technique. Without optimization, inherent temperature gradients can cause powerful residual stresses and microstructural defects. There is therefore a need for data-driven methods allowing real-time process optimization for WAAM.
View Article and Find Full Text PDFBackground: Sense of coherence (SOC) is a global orientation to life that may affect a person's way of acting and living within his or her life context, which can have an impact on general and oral health. The aims of this study were (i) to describe the distribution of SOC in a general adult population; (ii) to explore whether sociodemographic characteristics, oral health-related behaviours, self-reported oral health, and clinical oral status were associated with SOC; and (iii) to explore whether SOC was associated with self-reported oral health, controlling for sociodemographic characteristics, oral health-related behaviours, and oral clinical status.
Methods: This study was based on data from the cross-sectional population-based study Oral Health in Northern Norway (N = 1819 individuals, 923 women, mean age 47.
This case history describes a case of rhabdomyolysis resulting from treatment with escitalopram as monotherapy at the recommended dose. This is a rare and little-known side effect of selective serotonin reuptake inhibitors.
View Article and Find Full Text PDFCu-containing hierarchical SAPO-34 catalysts were synthesized by the bottom-up method using different mesoporogen templates: CTAB encapsulated within ordered mesoporous silica nanoparticles (MSNs) and sucrose. A high fraction of the Cu centers exchanged in the hierarchical SAPO-34 architecture with high mesopore surface area and volume was achieved when CTAB was embedded within ordered mesoporous silica nanoparticles. Physicochemical characterization was performed by using structural and spectroscopic techniques to elucidate the properties of hierarchical SAPO-34 before and after Cu introduction.
View Article and Find Full Text PDFBy utilizing previously established catalytic model reactions, a method for probing the topological location of transition metal sites incorporated in hierarchical silicoaluminophosphates (SAPOs) is presented. For the first time, iron(III)-incorporated hierarchical SAPO-11 (FeCTAB-11) was prepared and thoroughly characterized with conventional iron(III)-incorporated SAPO-11 (FeSAPO-11) as a reference. Initially, inductively coupled plasma - mass spectrometry (ICP-MS) indicated that the FeSAPOs contained similar amounts of metal (∼2.
View Article and Find Full Text PDFThe first successful synthesis of hierarchical CuSAPO-34 (3.9 wt% Cu) is reported using the polymer Pluronic F127 as a mesoporous structure directing agent (SDA). X-Ray absorption spectroscopy (XAS) revealed single site Cu2+ with 4 nearest oxygen neighbours at 1.
View Article and Find Full Text PDFThe implementation of ammonia as a hydrogen vector relies on the development of active catalysts to release hydrogen on-demand at low temperatures. As an alternative to ruthenium-based catalysts, herein we report the high activity of silica aerogel supported cobalt rhenium catalysts. XANES/EXAFS studies undertaken at reaction conditions in the presence of the ammonia feed reveal that the cobalt and rhenium components of the catalyst which had been pre-reduced are initially re-oxidised prior to their subsequent reduction to metallic and bimetallic species before catalytic activity is observed.
View Article and Find Full Text PDFIridium oxide powders with a surface area of more than 1 m g (4 m g from the H-UPD charge) and iridium-oxide crystallites less than 10 nm across were synthesized by heat treating gels formed from citric acid, ethylene glycol and dihydrogen hexachloroiridate(iv) in air. The characteristics of the resulting material was found to be strongly dependent on the heat-treatment step in the synthesis. A single heat-treatment of the gel resulted in a material with a substantial fraction of elemental iridium metal, i.
View Article and Find Full Text PDFIridium and ruthenium oxide are active electrocatalysts for oxygen evolution. The relation between preparation method, structure, and behavior of mixed oxides of iridium and ruthenium are of interest in order to obtain active and stable catalysts. In this work the structure of mixed Ru-Ir oxides synthesized by the polymeric precursor method, which involves the formation of a gel containing the metal precursors and subsequent heat-treatment in air, was studied for the IrRuO system.
View Article and Find Full Text PDFA cobalt rhenium catalyst active for ammonia synthesis at 400 °C and ambient pressure was studied using in situ XAS to elucidate the reducibility and local environment of the two metals during reaction conditions. The ammonia reactivity is greatly affected by the gas mixture used in the pre-treatment step. Following H/Ar pre-treatment, a subsequent 20 min induction period is also observed before ammonia production occurs whereas ammonia production commences immediately following comparable H/N pre-treatment.
View Article and Find Full Text PDFBackground: Plant strategies to resist herbivory include tolerance and avoidance. Tolerance strategies, such as rapid regrowth which increases the palatability of new shoots, can lead to positive feedback loops between plants and herbivores. An example of such a positive feedback occurs when moose (Alces alces) browse trees in boreal forests.
View Article and Find Full Text PDFPhys Chem Chem Phys
October 2014
Vanadium(V) and copper(II) were co-deposited into AlPO-5 and H-ZSM-5 three-dimensional microporous carriers to yield VCu:AlPO-5 and VCu:ZSM-5. The materials, along with copper analogues were tested for the selective oxidation of propene, and the catalysts perform in the following order: VCu:AlPO-5 > Cu:AlPO-5 > VCu:ZSM-5 > Cu:ZSM-5. Acrolein was selectively formed over VCu:AlPO-5 and Cu:AlPO-5 over a very wide range from 300 to 450 °C, whereas VCu:ZSM-5 displays a limited temperature window for acrolein formation (300-350 °C).
View Article and Find Full Text PDFUnder copper limiting growth conditions the methanotrophic bacterium Methylococcus capsulatus (Bath) secrets essentially only one protein, MopE*, to the medium. MopE* is a copper-binding protein whose structure has been determined by X-ray crystallography. The structure of MopE* revealed a unique high affinity copper binding site consisting of two histidine imidazoles and one kynurenine, the latter an oxidation product of Trp130.
View Article and Find Full Text PDFCu:SAPO-5 and Cu:SAPO-11 were prepared by conventional and hydrothermal ion exchange. Copper incorporation is increased six-fold by hydrothermal ion exchange relative to conventional methods. In all cases, the amount of copper taken up by SAPO-11 is superior to uptake in SAPO-5.
View Article and Find Full Text PDFThe purpose of this study was to determine the criteria by which the diagnosis of HIV dementia was made by providers in a public HIV outpatient clinic and hospital, and to evaluate the extent to which the providers' diagnosis confirmed or denied the presence of HIV dementia according to CDC recommendations. Retrospective chart analysis was conducted detailing symptomology, laboratory findings, and social characteristics of 103 HIV-infected patients from Nov 1, 1990 to Dec 31, 1993. Seventy-eight patients were evaluated by providers and given a preliminary HIV dementia diagnosis; 25 patients received no preliminary diagnosis.
View Article and Find Full Text PDFHosp Community Psychiatry
December 1987
An interactive, computerized version of the Diagnostic Interview Schedule (DIS) was completed by 135 randomly selected psychiatric inpatients and evaluated by the patients and their psychiatrists. The results showed that the majority of the patients interacted well with the computer and that the treating psychiatrists found the computer reports generally accurate and helpful. Analysis of the agreement between the computer and the psychiatrists' diagnoses yielded mixed results depending on the method of analysis chosen.
View Article and Find Full Text PDFA review of the literature assessing the efficacy of bilateral compared to nondominant unilateral ECT was conducted using a quantitative review procedure-meta-analysis. The results supported conventional reviews that concluded that there is no difference in outcome between bilateral and unilateral ECT. Meta-analysis also allowed an evaluation of the effects of 11 variables that span: (a) research methodology, (b) technique, (c) patient demographics, and (d) operational dimensions that have been proposed to mediate results of studies that found an advantage for bilateral over unilateral ECT.
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