Publications by authors named "Dunker K"

The capacity for a non-native species to become invasive largely hinges on existing dispersal capacity or adaptation of dispersal in new environments. Here we provide early evidence that invasive Northern Pike (Esox lucius), a Holarctic freshwater top predator, illegally introduced in the late 1950s into Southcentral Alaska, are now dispersing through estuarine corridors. This finding represents the first known documentation of estuary use and dispersal by Northern Pike in North America, exacerbating conservation concerns for already depressed populations of culturally and economically important species such as salmonids.

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An earlier observational study described selected patients with acute neck pain syndrome, who experienced short bursts of cervical vertigo elicited by rapid head movements. The current study on a larger cohort of 20 patients with chronic or frequently recurring neck pain syndrome and age-matched controls focused on two major questions: (1) Can head movements in subjects with exacerbations of neck pain and restrictions of neck mobility also elicit bursts of vertigo? (2) What is the impact on postural balance measured by analysis of body sway and locomotion? A detailed questionnaire was applied, posture and gait were evaluated by use of instrumented posturography-and gait analysis with and without slow or rapid horizontal head rotations in the yaw plane with and without sight/visual input. All patients reported some or frequent episodes of dizziness in the range of seconds only elicited by rapid, not by slow head movements.

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Background: Due to the nursing faculty shortage, expert clinical nurses are working as novice clinical instructors (CIs). Orientation is needed to prepare these nurses to teach; however, lack of evidence-based guidelines for orientation programs can lead to variability among institutions.

Purpose: The purpose of this study was to describe clinical nursing faculty orientation practices in the United States.

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Invasive species are a major threat to global biodiversity, yet also represent large-scale unplanned ecological and evolutionary experiments to address fundamental questions in nature. Here we analyzed both native and invasive populations of predatory northern pike () to characterize landscape genetic variation, determine the most likely origins of introduced populations, and investigate a presumably postglacial population from Southeast Alaska of unclear provenance. Using a set of 4329 SNPs from 351 individual Alaskan northern pike representing the most widespread geographic sampling to date, our results confirm low levels of genetic diversity in native populations (average đťť… of 3.

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Background: Prelicensure nursing programs often hire clinical experts who are novice educators to teach integration of nursing clinical judgment within the context of patient care experiences.

Purpose: To describe practices of schools of nursing to onboard, orient, and mentor newly hired faculty.

Methods: Faculty (n = 174) and leaders (n = 51) replied to an online survey.

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Objective: This systematic review evaluates and summarizes existing eating disorder (ED) prevention programs in Latin American countries.

Methods: A systematic literature search was conducted using the Cochrane Controlled Trial Register, PubMed, and Virtual Health Library databases up to and including July 31, 2022. All ED prevention studies published in English, Spanish or Portuguese were eligible, regardless of the study design, sample characteristics, and type of prevention programs.

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Background: The main clinical presentation of episodic ataxias (EAs) consists of vertigo and dizziness attacks lasting for minutes to hours with widely varying accompanying symptoms. The differentiation of EA and episodic vertigo/dizziness syndromes in childhood and adolescence such as vestibular migraine (VM) and recurrent vertigo of childhood (RVC) can be challenging. Furthermore, only few prospective studies of children/adolescents with EA are available.

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Introduction: "Recurrent Vertigo of Childhood" (RVC) has recently replaced the term "Benign Paroxysmal Vertigo of Childhood" and was defined as recurrent spells of vertigo without evidence of a vestibular migraine of childhood (VMC). RVC and VMC are considered the most frequent causes of vertigo and dizziness in children below 18 years of age. Diagnosis might be challenging since clinical features of RVC and VMC may overlap.

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Objectives: Recently, a novel clearing system for interstitial solutes of the brain was described as a perivascular pathway named the glymphatic system. Furthermore, lymphatic vessels were found in the meninges to drain interstitial fluids. It is hypothesized that interstitial solutes, such as amyloid β, are firstly processed through the brain by the glymphatic system and secondly drained out of the brain by lymphatic vessels (glymphatic-lymphatic fluid transport system [GLS]).

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Background And Purpose: Vertigo and dizziness are common complaints in emergency departments and primary care, and pose major diagnostic challenges due to their various underlying etiologies. Most supportive diagnostic algorithms concentrate on either identifying cerebrovascular events (CVEs) or diagnosing specific vestibular disorders or are restricted to specific patient subgroups. The aim of the present study was to develop and validate a comprehenisve algorithm for identifying patients with CVE and classifying the most common vestibular disorders.

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Rotenone is a pesticide commonly used to eradicate Northern Pike (Esox lucius), an invasive species, in Southcentral Alaska. The present work incorporates a field investigation of rotenone attenuation in eight lakes of the Kenai Peninsula, following a CFT Legumine® treatment in October 2018 and a laboratory simulation to determine persistence under light/dark and sterile/nonsterile conditions representative of Southcentral Alaskan winters. In the field, rotenone degraded within <60 days of application in all lakes, while rotenolone, the primary product of rotenone degradation, persisted for up to <280 days post-treatment at two locations.

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Background: Fish skin represents an ancient vertebrate mucosal surface, sharing characteristics with other mucosal surfaces including those of the intestine. The skin mucosa is continuously exposed to microbes in the surrounding water and is therefore important in the first line defense against environmental pathogens by preventing bacteria from accessing the underlying surfaces. Understanding the microbe-host interactions at the fish skin mucosa is highly relevant in order to understand and control infection, commensalism, colonization, persistence, infection, and disease.

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The relentless role of invasive species in the extinction of native biota requires predictions of ecosystem vulnerability to inform proactive management strategies. The worldwide invasion and range expansion of predatory northern pike (Esox lucius) has been linked to the decline of native fishes and tools are needed to predict the vulnerability of habitats to invasion over broad geographic scales. To address this need, we coupled an intrinsic potential habitat modelling approach with a Bayesian network to evaluate the vulnerability of five culturally and economically vital species of Pacific salmon (Oncorhynchus spp.

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Background: Childhood and adolescent obesity is a worldwide public health concern. The New Moves program aims to change eating behavior (EB) and physical activity (PA).

Objective: To evaluate the effectiveness of an intervention and predictors of better outcomes relating to EB and PA levels.

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An effective behavior change program is the first line of prevention for youth obesity. However, effectiveness in prevention of adolescent obesity requires several approaches, with special attention paid to disordered eating behaviors and psychological support, among other environmental factors. The aim of this systematic review is to compare the impact of two types of obesity prevention programs, inclusive of behavior change components, on weight outcomes.

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In this study a range of factors influencing the fabrication of single-cell arrays (SCAs) are identified and investigated. Micro-contact printing was used to introduce spots coated with polyethyleneimine or Matrigel on glass surfaces pre-coated with polyethylene glycol. Unmodified E.

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Background: Restrictions on students' use of electronic health information have been anecdotally reported as a threat to clinical learning, development of informatics competency, and adherence to personal health information privacy laws. However, evidence on which informatics education and policy strategies can be designed is lacking.

Purpose: This study describes the scope of nursing students' access to and use of electronic health information systems as reported by clinical instructors.

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The use of simulation to prepare new graduates to enter a dynamic workforce is an effective strategy to improve skill acquisition, critical thinking, and the training needed to care for complex patients. Megacode simulation was implemented in the undergraduate curriculum during the last semester prior to graduation. Students (n = 52) completed the Clinical Decision-Making Self-Confidence Scale; 95 percent were satisfied with the megacode experience and perceived the simulation training as beneficial in content knowledge and skill acquisition.

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As the demand for nurses increases across the United States, nursing programs are challenged to increase enrollment. Thus, expert clinicians without teaching experience are often hired as clinical faculty. Using simulation to train novice clinical faculty is one method to bolster the clinical faculty workforce.

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Article Synopsis
  • Bacterial adhesion research is progressing rapidly, focusing on the significant roles of glycans in bacterial attachment to surfaces through interactions with lectins and other glycans.
  • The use of advanced techniques like atomic force microscopy (AFM) and optical tweezers (OT) is enhancing our understanding of how bacteria adhere to glycosylated and mucosal surfaces.
  • There are still untapped research areas where these sensitive force probes could be applied to further explore bacterial adhesion mechanisms.
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Background: Female adolescents with type I diabetes mellitus (TIDM) have an increased risk of developing eating disorders (ED) due to the dietary recommendations.

Objective: Investigate the association between dietary intake and increased risk of ED.

Methods: Case-control study with 50 T1DM female adolescents (11-16 years) and 100 healthy peers (CG).

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Purpose: To conduct a cluster randomized controlled trial comparing the Brazilian version of the New Moves program (NMP) versus observation among Brazilian adolescent girls.

Methods: Ten schools were randomly allocated to the Brazilian NMP or the observation arm. Study participants included 12-14-year-old girls.

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Objective: To develop and validate the weight-control behaviors (WCBs) scale and to evaluate its psychometric properties.

Study Design: We made use of data from a cluster-randomized trial assessing the effectiveness of the Brazilian New Moves Program. The Brazilian New Moves Program was a multicomponent intervention aimed at preventing weight-related problems among adolescent girls in public schools in SĂŁo Paulo, Brazil.

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Determining the success of invasive species eradication efforts is challenging because populations at very low abundance are difficult to detect. Environmental DNA (eDNA) sampling has recently emerged as a powerful tool for detecting rare aquatic animals; however, detectable fragments of DNA can persist over time despite absence of the targeted taxa and can therefore complicate eDNA sampling after an eradication event. This complication is a large concern for fish eradication efforts in lakes since killed fish can sink to the bottom and slowly decay.

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