Publications by authors named "Gudhrun Petursdottir"

Unlabelled: We describe the clinical treatment of repetitive, stereotypic hand mouthing in a 7-year old child with severe developmental delay, conducted in the context of center-based autism service. The client's history included use of mechanical restraint to prevent tissue damage and infection. Prior antecedent- and reinforcement-based interventions were ineffective.

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Unlabelled: The ruminant-microorganism symbiosis is unique by providing high-quality food from fibrous materials but also contributes to the production of one of the most potent greenhouse gases-methane. Mitigating methanogenesis in ruminants has been a focus of interest in the past decades. One of the promising strategies to combat methane production is the use of feed supplements, such as seaweeds, that might mitigate methanogenesis via microbiome modulation and direct chemical inhibition.

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Article Synopsis
  • * Over two years, 654 out of 1030 invited participants provided urine samples and completed questionnaires about their diet and supplement intake, revealing a median urinary iodine concentration (UIC) of 110 µg/l, which declined over time.
  • * Results indicated that diet significantly affected UIC, with higher levels in women consuming fish and eggs compared to those relying on dairy, and highlighted the need for ongoing monitoring to address iodine deficiencies in pregnant populations.
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Visual imagining has been proposed to play a role in the emergence of derived stimulus relations. We examined whether test-relevant visual imagining during baseline training would, accordingly, facilitate emergent visual-visual conditional discriminations at test. Adult participants (n = 75) were randomly assigned to three groups.

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The study aimed to evaluate the effect of participating in bereavement support groups on mental well-being and levels of grief and to gather information about participants´ experiences of participation. The programme consisted of six sessions over six weeks. Data were collected with the Warwick Edinburgh Mental Well-Being Scale (WEMWBS) and the Adult Attitude to Grief scale (AAG) as well as demographic and open-ended questions.

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Introduction: Papillary renal cell carcinoma (pRCC) is the second most common histology of renal cell carcinoma (RCC), accounting for 10-15% of cases. Traditionally, pRCC is divided into type 1 and type 2, although this division is currently debated as a prognostic factor of survival. Our aim was to investigate the epidemiology and survival of the pRCC subtypes in a whole nation cohort of patients during a 50-year period.

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Background: To strengthen palliative care for children in the Nordic countries, an updated status of current needs, resources, clinical services, education, and research is necessary to align and consolidate future research. A Nordic research collaboration initiative for children with palliative care needs was assembled in 2023. Building on this initiative, this paper presents an overview of pediatric palliative care (PPC) in the Nordic countries' (a) population characteristics, (b) care models and setting of care, (c) education and training, and (d) research.

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Background: Wheat distillers' grains (WDG) and seaweeds are recommended as alternative protein sources and enteric methane mitigators in dairy cow diets, respectively, but little is known about their impact on milk quality and safety. In the present study, 16 cows in four 4 × 4 Latin squares were fed isonitrogenous diets (50:50 forage:concentrate ratio), with rapeseed meal (RSM)-based or WDG-based concentrate (230 and 205 g kg dry matter) and supplemented with or without Saccharina latissima.

Results: Replacement of RSM with WDG enhanced milk nutritional profile by decreasing milk atherogenicity (P = 0.

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Background: Including seaweed in cattle feed has gained increased interest, but it is important to take into account that the concentration of toxic metals, especially arsenic, is high in seaweed. This study investigated the arsenic species in milk from seaweed-fed cows.

Results: Total arsenic in milk of control diets (9.

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Seaweed is becoming increasingly popular in the Western diet as consumers opt for more sustainable food sources. However, seaweed is known to accumulate high levels of arsenic-which may be in the form of carcinogenic inorganic arsenic (iAs). Here we propose a fast method for the routine measurement of iAs in seaweed using HPLC-ICP-MS without coelution of arsenosugars that may complicate quantification.

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This special section of follows up on a virtual panel discussion on the role of operant and Pavlovian processes in children's language learning. We present four articles, including two contributed by panelists, that illustrate the explanatory power of operant conditioning processes in the study of language.

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In topography-based verbal behavior, different antecedent stimuli control different topographies of responding, whereas in selection-based verbal behavior, different antecedent stimuli control the selection of visually distinct stimuli from an array of options. In this article, we point out three variable characteristics of selection-based behavior, highlighted by recent technological developments, that affect its similarity to topography-based behavior: The extent to which stimuli can be constructed from minimal units, the size and composition of the selection array, and the similarity of response-produced stimuli to verbal stimuli that are prevalent in the speaker's verbal community. Although a distinction between topography-based and selection-based behavior has merit, particular characteristics of a selection-based verbal behavior modality may often be more relevant for researchers and clinicians to consider than its status as selection-based.

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Purpose: To investigate central retinal morphology and optic retinal nerve fibre layer (RNFL) in prematurely born young adults and compare to term born controls.

Materials And Methods: The participants were 59 prematurely born individuals, with a birthweight ≤1.500 g, and 44 term born controls, all 25-29 years of age.

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Based on previous farm-level studies, this study hypothesised that production system (conventional, CON; organic, ORG; channel island, CHA) and season would cause variation in the concentrations of macrominerals and trace elements in retail milk. On average, milk retained its status as an excellent source of Ca, P, I, and Mo across different demographics, and a very good source of K, Mg, and Zn for children. Compared with CON and ORG, CHA milk contained higher concentrations of Ca, Mg, P, Cu, Mn, and Zn; and lower concentrations of K and I.

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Purpose: Based on eight research criteria, this study examines the feasibility of a 5-week Family Strength-Oriented Therapeutic Conversation (FAM-SOTC) for caregivers of adolescents diagnosed with attention deficit hyperactivity disorder (ADHD); this intervention aims to improve outcomes of both caregivers and adolescents.

Design And Methods: The FAM-SOTC intervention was implemented at an adolescent psychiatric outpatient unit with 10 caregivers of 10 adolescents diagnosed with ADHD. The feasibility criteria were addressed through survey responses, diary reports, and a one-group pre- and posttest quasi-experimental design.

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Sixteen multiparous Holstein cows in four blocks of 4 × 4 Latin square over 4-week experimental periods were used to study the effects of seaweed (Saccharina latissima) supplement (with/without) and protein source (rapeseed meal (RSM)/wheat distiller's grain (WDG)) on milk mineral concentrations. Dietary treatments did not affect milk production and basic composition. Feeding seaweed slightly decreased milk Ca and Cu concentrations; whilst increased (by 3.

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Edible seaweeds with a relatively high total arsenic concentration have been a global concern. As the largest seaweed producer, China contributes about 60 % of the global seaweed production. The present study investigated 20 seaweed species collected from representative seaweed farming sites in the six provinces along the Chinese coastline, of which Saccharina japonica, Undaria pinnatifida, Neopyropia spp.

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This study aimed to investigate the effects of two brown Icelandic seaweed samples ( and ) on methane production, nutrient degradation, and microbiota composition. A total mixed ration (TMR) was incubated alone as control or together with each seaweed at two inclusion levels (2.5 and 5.

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The characteristic lobulated nuclear morphology of granulocytes is partially determined by composition of nuclear envelope proteins. Abnormal nuclear morphology is primarily observed as an increased number of hypolobulated immature neutrophils, called band cells, during infection or in rare envelopathies like Pelger-Huët anomaly. To search for sequence variants affecting nuclear morphology of granulocytes, we performed a genome-wide association study using band neutrophil fraction from 88,101 Icelanders.

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Objectives: To assess the trends in medication use indicative of physical and psychological morbidity following the 2010 volcanic eruption in Eyjafjallajökull immediately after and during a 3-year period following the eruption.

Design: Population-based register study.

Setting: Eyjafjallajökull eruption in Iceland, 2007-2013.

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Thirty conventional and twenty-four organic dairy farms were divided into equal numbers within system groups: high-pasture, standard-pasture, and low-pasture groups. Milk samples were collected monthly for 12 consecutive months. Milk from high-pasture organic farms contained less fat and protein than standard- and low-pasture organic farms, but more lactose than low-pasture organic farms.

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Red-pigmented strains of non-sporeforming, aerobic, chemoorganotrophic bacteria were isolated from intertidal hot springs in Laugarvík, NW-Iceland. Cells stained Gram-negative and formed pleomorphic rods that often had swollen ends and occurred singly or in filaments. Growth was observed at 40-65 °C (optimum at 60 °C), pH 6-9 (optimum at 6.

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We examined the replicability and generality of a previously reported training sequence effect on emergent conditional discriminations in the intraverbal naming task. In Experiment 1, a tact-intraverbal (TI) group learned first to vocally label 6 visual patterns and then to intraverbally relate pairs of verbal labels, whereas an intraverbal-tact (IT) group received the same training in the opposite sequence. Emergent conditional discriminations among pattern stimuli were assessed in match-to-sample (MTS) format.

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