bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fine structure of the retrocerebral organ in the rotifer Trichocerca similis (Monogononta)
Authors: Hochberg Rick , Araújo Thiago Q. , Walsh Elizabeth J. , Mohl Jonathon E. , Wallace Robert L. 
Published: March 2023

AbstractThe retrocerebral organ (RCO) is a complex glandular system that is widely distributed across species of phylum Rotifera (sensu stricto). This system is hypothesized to secrete mucus that aids in benthic locomotion, adhesion, and/or reproduction. Unfortunately, the ultrastructure of the RCO is mostly unknown, having only been partially examined in one species. We used transmission electron microscopy and confocal laser scanning microscopy to describe the RCO in the planktonic freshwater rotifer Trichocerca similis. Results reveal the RCO to be a singular syncytial organ composed of a posterior glandular region, an expansive reservoir, and an anterior duct. The glandular portion has an active synthetic cytoplasm with paired nuclei, abundant rER, ribosomes, Golgi, and mitochondria. Electron‐dense secretion granules accumulate at the anterior end of the gland and undergo homotypic fusion to create larger, more electron‐lucent granules with numerous mesh‐like contents that gradually fuse into tubular secretions that accumulate in the reservoir. Ultrastructure of these secretions suggests they may be hydrated glycoproteins. Cross‐striated longitudinal muscles form a partial sleeve around the reservoir and may function to squeeze the secretions through the single cytoplasmic duct that penetrates the cerebral ganglion. A review of the RCOs from other rotifers suggests that further ultrastructural analyses are required before attempting to discern their functions and homologies.
Hertzian crack propagation in graded glass/ceramic composites
Authors: Arslan Onur 
Published: March 2023

AbstractIn literature, the concept of material gradation is shown to inhibit surface crack initiation in glass/ceramic composites subjected to Hertzian indentation. However, surface cracks could yet initiate due to relatively higher loadings or in the presence of surface flaws/defects. Hence, characterization of graded composites concerning the resistance against Hertzian crack initiation and propagation manifests itself as a prominent matter. In this study, axisymmetric Hertzian cracks evolving in graded glass/ceramic composites propelled by a rigid cylindrical punch are investigated employing a novel recursive method, called the stacked‐node propagation procedure. Crack trajectories and their propagation susceptibilities are predicted via the minimum strain energy density (MSED) criterion regarding the crack growth resistance (R‐curve) of ceramics. The stress trajectory approach is also considered for a homogeneous glass to reveal the reliance and effectiveness of the MSED criterion in the present crack problems. The Mori–Tanaka relations are adopted to model the elastic modulus and Poisson's ratio variations through the composites, which are implemented on the simulations via the homogeneous finite element approach. Hertzian crack problem of a practically producible graded composite comprised of oxynitride glass and a fine‐grained silicon nitride ceramics (Si3N4) is treated as a case study. The degree of material gradation is assessed for the mitigation of surface crack initiation and propagation risks.
Patients' experiences and reasons for unplanned return visits to the emergency department: A qualitative study
Authors: Hutchinson Claire , Curtis Kate , McCloughen Andrea 
Published: March 2023

AbstractAimsThe aim of this study was to explore the reasons for and experiences of patients who make an unplanned return visit to the emergency department.DesignThis study forms the qualitative phase of a larger explanatory sequential mixed methods study and is informed by interpretive description. The paper was prepared using the consolidated criteria for reporting qualitative research.MethodsSemi‐structured patient interviews were conducted over a 3‐month period (July–September 2021). Data were analysed using reflexive thematic analysis.ResultsInterviews from 13 participants generated findings related to experiences at and following their initial visit that contributed to their decision to return to the emergency department. Four themes were developed: (1) Patients experience barriers to feeling heard and having their concerns addressed; (2) Patients have little choice but to place their trust in clinicians; (3) Patients unexpectedly experience persistent symptoms which cannot be managed at home; and (4) Patients develop a sense of urgency about having their condition treated.ConclusionA negative experience at the initial ED visit may have dual conflicting impacts. It can contribute to patients' perceived need for a return visit because they are ill‐equipped to manage their condition at home, and it can also contribute to their initial reluctance to return to the ED when symptoms persist. Nurses and other clinicians working in ED need to actively build patient's experiential trust through clear communication, timely consultation and shared decision‐making at discharge, which in turn can increase patient's confidence and capability to self‐manage their condition. This study adds to the current body of literature about return visits by highlighting that a more positive experience of ED may assist patients to make better‐informed decisions about when and how to seek treatment and minimize unnecessary and unplanned return visits. Whilst not an intended topic for exploration in this study, the COVID‐19 pandemic influenced patients' experiences at both initial and return ED visits and limited their ability to access primary healthcare options. These experiences contributed to patients' decisions to make a return visit.
Addressing the challenges of early career rural nursing to improve job satisfaction and retention: Strategies new nurses think would help
Authors: Rose Heidi , Skaczkowski Gemma , Gunn Kate M. 
Published: March 2023

AbstractAimsTo (a) explore the experiences of early career registered nurses in rural hospitals in Australia and (b) identify strategies they believe would help increase job satisfaction and retention.DesignQualitative descriptive design.MethodsThirteen registered nurses located in outer regional, remote or very remote (herein ‘rural’) Australian hospitals participated in semi‐structured interviews. Participants had graduated from a Bachelor of Nursing program in 2018–2020. Data were analyzed using thematic analysis and an essentialist, bottom‐up approach.ResultsSeven themes related to the experiences of rural early career nursing: (1) appreciate diverse scope of practice; (2) rewarding sense of community and opportunity to give back; (3) staff support determines the quality of experience; (4) feeling underprepared and the need for ongoing education; (5) diverse views on the optimal length of rotation and level of input into choice of clinical area; (6) difficulty maintaining work/life balance due to work hours and rostering; and (7) lack of staff and resources. Strategies to improve nurses' experiences included: (1) assistance with accommodation and transport; (2) social gatherings to enhance connection; (3) sufficient orientation and supernumerary time; (4) increased frequency of contact with clinical facilitators and multiple mentors; (5) prioritizing clinical education across diverse topics; (6) greater involvement in choice of rotations and clinical areas; and (7) desire for more flexible work hours and rostering.ConclusionsThis study highlighted the experiences of rural nurses and explored their suggestions for how to overcome challenges in their roles. Greater consideration of early career registered nurses' needs and preferences is vital to improving and maintaining a satisfied, dedicated and sustainable rural nursing workforce.ImpactMany of the strategies for improving job retention identified by nurses in this study could be actioned at a local level, with little financial or time investment.Patient or Public ContributionNo Patient or Public Contribution.
Multiple origins of mountain biodiversity in New Zealand's largest plant radiation
Authors: Thomas Anne , Meudt Heidi M. , Larcombe Matthew J. , Igea Javier , Lee William G. , Antonelli Alexandre , Tanentzap Andrew J. 
Published: March 2023

AbstractAimHow mountains accumulate species diversity remains poorly understood, particularly the relative role of in situ cladogenesis compared with colonization from lower elevations. Here, we estimated the contributions of in situ cladogenesis and colonization in generating biodiversity of a large mountain plant radiation and determined the importance of niche adaptation and divergence in these processes. We expected cladogenesis would accompany novel habitats formed by mountain uplift, but colonization would become more important with time as dispersal opportunities accrue.LocationNew Zealand, Southern Alps.TaxonVeronica sect. Hebe (Plantaginaceae).MethodsWe estimated the most complete time‐calibrated phylogeny to date for Veronica sect. Hebe to quantify rates of in situ cladogenesis and colonization of mountain habitat based on historical biogeographical models. We used environmental niche modelling to quantify species' climate niches and estimate niche disparity and divergence over time.ResultsIn situ cladogenesis generated more species in the mountains than colonization from lowlands. Whereas cladogenesis slowed over time, colonization increased, especially in the alpine zone. Both adaptive ecological speciation along climate niche axes and non‐adaptive, vicariant speciation contributed to cladogenesis. However, climate niche disparity through time became saturated, suggesting competition for niche space was important. Colonization brought more divergent species into mountain niches.Main ConclusionsWe suggest mountain diversity accumulates through three main stages: high cladogenesis after initial colonization, decreasing cladogenesis with increasing competition and increasing colonization after niches saturate, likely promoted by niche divergence. Combining lineage and mountain uplift trajectories, these stages provide a conceptual model to understand how diversity accumulates elsewhere. Assuming these deep‐time findings apply to anthropogenic conditions, alpine specialists could struggle to outcompete colonizers facilitated by climate change, especially from generalist clades. Considering novel competitive interactions alongside niche traits and biogeographical processes will be crucial for predicting the fate of alpine biodiversity in a changing world.
Habitat heterogeneity determines species richness on small habitat islands in a fragmented landscape
Authors: Yan Yongzhi , Jarvie Scott , Zhang Qing , Han Peng , Liu Qingfu , Zhang Shuangshuang , Liu Pengtao 
Published: March 2023

AbstractAimThe small‐island effect (SIE), as an exception to the species–area relationship, has received much attention in true island systems. However, the prevalence and related patterns of the SIE have not been well evaluated in habitat island systems. Here, we aimed to identify the existence of SIE for habitat islands in fragmented landscapes and determine the key factors influencing species richness on small habitat islands.LocationInner Mongolia Autonomous Region, China.TaxonVascular plants.MethodsBased on 78 grassland fragments in fragmented landscapes of the agro‐pastoral ecotone of northern China, we used piecewise regression, path analysis and null models to investigate the SIE of the species–area relationship. We then used a multi‐model selection to evaluate the impacts of four influencing factors (instability, isolation, habitat heterogeneity and surrounding productivity) on species richness (including habitat specialists and generalists) on small habitat islands within the range of SIE.ResultsWe found an obvious threshold of 5.1 ha in the species–area relationship, below which habitat island area had no direct and indirect effects on species richness. Small habitat islands (<5.1 ha) host a lower percentage of habitat specialists and a higher percentage of generalists. On small habitat islands, species richness was positively affected by habitat heterogeneity while negatively affected by instability and isolation. Habitat heterogeneity had the strongest effect on species richness, positively affecting specialist richness while negatively affecting generalist richness.Main ConclusionsThere is an SIE in fragmented landscapes of the agro‐pastoral ecotone of northern China, which should be considered in biodiversity conservation. Habitat heterogeneity had a key role in determining the pattern of species richness, especially for small islands. Habitat specialists and generalists had different SIE‐related patterns. Our study highlights the importance of considering different ecological groups of species to improve our understanding of the SIE in fragmented habitats.
Internalized Weight Bias, Weight‐Related Experiences, And Peripartum Weight
Authors: Sharp Meghan , Ward L.G. , Solar Chelsey , Shea Chelsea , Carels Robert A. , Dolbier Christyn 
Published: March 2023

IntroductionThe purpose of this study was to investigate internalized weight bias (IWB) and its relationship with pregnancy‐related weight changes and postpartum depression. IWB is defined as the internalization of negative attitudes and beliefs about people due to their weight. Although IWB has been linked with weight change and depression in other samples, it has never been investigated in the postpartum period.MethodsWe used a cross‐sectional survey design. Participants were 251 women recruited via social media who were living in the United States and 6 to 12 months postpartum. We calculated percentage of body weight gained during pregnancy and percentage of that weight that was retained postpartum from self‐reported weights. Participants completed self‐report measures of IWB (modified version of the Weight Bias Internalization Scale) and postpartum depression (Edinburgh Postnatal Depression Scale).ResultsGestational weight gain was not significantly associated with IWB or depression. Postpartum retention of gestational weight was significantly positively associated with both IWB and depressive symptoms. Furthermore, IWB mediated the relationship between postpartum weight retention and depressive symptoms.DiscussionPostpartum retention of weight gained during pregnancy, but not weight gain itself, was related to both IWB and depressive symptoms. The relationship between pregnancy‐related weight changes and psychological distress is complex. Sociocultural pressures to return to a prepregnancy physical state swiftly after giving birth may increase risk for IWB during a time in life when stress is already likely to be high, posing additional psychological risk. IWB existing prepregnancy may also worsen postpartum self‐concept, contributing to depression. This is the first study, to our knowledge, to directly assess associations among gestational weight change, IWB, and postpartum depression. In addition to discussing weight in pregnancy, perinatal care providers could improve postpartum health by helping women set realistic, body‐positive goals postpartum.
Genetic autopsy and genetic counseling for a case of fatal oligohydramnios due to de novo 17q12 deletion syndrome
Authors: Hiromoto Kana , Morisada Naoya , Tairaku Shinya , Nozu Kandai , Iijima Kazumoto , Funakoshi Toru 
Published: March 2023

AbstractWe report here a fatal oligohydramnios case, which was suspected due to autosomal recessive polycystic kidney disease at first, but genetic analysis using chorionic tissue and umbilical cord after stillbirth led to the diagnosis of 17q12 deletion syndrome. Subsequent genetic analysis of the parents showed no 17q12 deletion. In this case, if the fetus had autosomal recessive polycystic kidney disease, the recurrence rate in the next pregnancy was suspected to be 25%, but since it was a de novo autosomal dominant disorder, the recurrence rate is extremely low. When a fetal dysmorphic abnormality is detected, a genetic autopsy not only helps to understand the cause but also provides information about the recurrence rate. This information is important for the next pregnancy. A genetic autopsy is useful in cases of fetal deaths or abortions resulting from fetal dysmorphic abnormalities.
Evaluation of temporomandibular joint dysfunction in traumatic brain injury patients
Authors: Karpuz Savaş , Yılmaz Ramazan , Yılmaz Halim 
Published: March 2023

AbstractBackgroundThe aim of this study was to evaluate the frequency of temporomandibular joint dysfunction and related factors in patients with traumatic brain injury.MethodsA total of 60 participants, 30 patients with traumatic brain injury and 30 healthy volunteers of similar age, have been included in this study, which was designed as a hospital‐based cross sectional study. Fonseca questionnaire was used to evaluate and classify the temporomandibular joint dysfunction. Temporomandibular joint range of motion was evaluated with a digital calliper, and masticatory muscles pressure pain threshold was evaluated with an algometer. Labial commissure angle measurement was used to evaluate the severity of facial paralysis. Complications related to traumatic brain injury were recorded in patients with traumatic brain injury.ResultsAccording to Fonseca questionnaire score, 80% of traumatic brain injury patients and 16.7% of the control group had temporomandibular dysfunction (p < .001). In the intergroup comparison, a significant decrease was found in all temporomandibular range of motion and masticatory muscles pressure pain threshold parameters in favour of the traumatic brain injury group (p < .001). Labial commissure angle and Fonseca questionnaire scores were higher in the traumatic brain injury group (p < .001). The frequency of temporomandibular dysfunction was more common in traumatic brain injury patients with headache than in those without headache, as shown by the results of the Fonseca questionnaire (p = .044).ConclusionCompared to healthy controls, patients with traumatic brain injury experienced issues with the temporomandibular joint more frequently. Additionally, TBI patients with headaches had a greater frequency of temporomandibular joint dysfunction. Therefore, it is advised to check for temporomandibular joint dysfunction in traumatic brain injury patients during follow‐up. In addition, the presence of headache in traumatic brain injury patients may be a stimulant for temporomandibular joint dysfunction.
Paradoxes of implementing digital manufacturing systems: A longitudinal study of digital innovation projects for disruptive change
Authors: Moschko Lukas , Blazevic Vera , Piller Frank T. 
Published: March 2023

AbstractDigital manufacturing technologies offer many opportunities for established companies to innovate. They promote data‐driven gains in operational efficiency and enable the transformation of current business models or the creation of entirely new differentiation opportunities. However, many digital innovation projects in manufacturing fall short of their initial ambitions and result in incremental improvements to an existing manufacturing system, if at all. To understand the reasons for the discrepancy between initial ambitions and achieved outcomes, we conduct a longitudinal qualitative study based on a collaborative research project with eight companies and additional expert interviews. Applying a paradox lens, we identify three tensional knots that reveal interrelated, multiple tensions of digital innovation management projects in established manufacturing firms: (1) amalgamating physical and digital assets, (2) innovating in an existing modus operandi, and (3) integrating internal and external stakeholders. These tensions result in the simultaneous occurrence of dynamic and conflicting forces that turn digital innovation projects in manufacturing away from their high initial ambitions. Our findings explain why digitizing the manufacturing system is a non‐trivial endeavor for established firms, which need to balance the complexities inherent in digitization efforts and manage conflicting goals. For managers, the findings provide ways to manage the interrelated tensions in their digital innovation efforts, enabling them to better capitalize on disruptive innovation ambitions.
Examining the associations between attention‐deficit/hyperactivity disorder, sleep problems, and other mental health conditions in adolescents
Authors: Loram George , Silk Tim , Ling Mathew , Sciberras Emma 
Published: March 2023

SummaryAdolescents with attention‐deficit/hyperactivity disorder (ADHD) often experience greater sleep difficulties compared to those without. However, findings are mixed, and other mental health conditions are often overlooked. This study aimed to examine the relationship between sleep problems, ADHD, and other mental health conditions in a sample of adolescents. Data from 373 adolescents aged 10–19 years was used as part of the wider ‘Healthy Brain Network’ study, which targets children and adolescents experiencing mental health and neurodevelopmental difficulties. Mental health conditions were assessed via a comprehensive assessment. Sleep was measured by self‐ and parent‐report, as well as via up to a month of actigraphy data. Actigraphy data were analysed using mixed‐methods modelling, while subjective sleep data were analysed using multiple regression. Subjectively‐reported sleep was generally worse in adolescents who had ADHD and other mental health conditions compared to those with ADHD but no other conditions. There were no associations between ADHD status and objective sleep measures or self‐reported measures, but a significant association was found between ADHD status and parent‐reported sleep difficulties, even when accounting for other conditions. Parent‐reported sleep problems were associated not only with ADHD, but also with anxiety, depression, and externalising disorders. The strength of association between ADHD and sleep problems is potentially not as strong as previously thought when considering the role of other mental health conditions. Clinicians should consider the role of other mental health conditions when sleep problems are present, and vice versa. The study also highlights the importance of comprehensive, multi‐informant assessment of mental health conditions, including sleep.
The impact of periodic interviews on unemployment duration: Evidence from the 2017 Finnish reform
Authors: Huuskonen Jussi 
Published: March 2023

AbstractIn 2017, a Finnish policy reform intensified the Public Employment Services' practice of periodically interviewing unemployed jobseekers. This study used high‐quality administrative data to analyse the effect of interviews on unemployment duration. We used a difference‐in‐differences approach that exploited regional variations in treatment intensity. Our results show that a 10 percentage point increase in interview probability increased the monthly hazard rate of employment by 3.1 per cent, with the effect being strongest among jobseekers aged 25–34 and jobseekers with a low education level. Also, our results demonstrate a strong effect on participation in active labour market programmes.
When Do Interest Groups Lobby Legislators in Strong Presidential Systems?
Authors: Dockendorff Andrés , Lodato Simón 
Published: March 2023

AbstractWhen do interest groups target legislators to approach or lobby under strong presidentialism? This article explores two hypotheses. First, interest groups and lobbyists seek to access committee chairs with gatekeeping power, even in those jurisdictions where the executive holds (most) exclusivity to initiate legislation (Gatekeeping Hypothesis). Second, interest groups and lobbyists target legislators who introduce more bills on issues that concern them but only on policy areas outside the executive's exclusive sphere (Legislative Activity Hypothesis). We test these hypotheses with evidence from the Chilean Chamber of Deputies. We have coded and analysed 6479 lobbying audiences and over 2300 bills.