bluuebunny/crossref_metadata_2025_split huggingface dataset:
Alien plant invasion hotspots and invasion debt in European woodlands
Authors: Wagner Viktoria , Večeřa Martin , Jiménez‐Alfaro Borja , Pergl Jan , Lenoir Jonathan , Svenning Jens‐Christian , Pyšek Petr , Agrillo Emiliano , Biurrun Idoia , Campos Juan Antonio , Ewald Jörg , Fernández‐González Federico , Jandt Ute , Rašomavičius Valerijus , Šilc Urban , Škvorc Željko , Vassilev Kiril , Wohlgemuth Thomas , Chytrý Milan 
Published: March 2021

AbstractQuestionsEuropean woodlands harbor at least 386 alien plant species but the factors driving local invasions remain unknown. By using a large vegetation‐plot database, we asked how local richness and abundance of alien species vary by regions, elevation, climate, soil properties, human disturbance, and habitat types.LocationWestern, central and southern Europe.MethodsWe linked consolidated data from the European Vegetation Archive (16,211 plots) to a habitat classification scheme, climate, soil properties and human disturbance variables. In addition, we used 250 km × 250 km regional grid cells to test whether local patterns differ among regions. We used generalized additive models (GAMs) and quantile GAMs to explore how relative alien species richness and the sum of alien species covers per plot relate to predictors. Random Forest analyses (RFs) were employed to assess the importance of individual predictors that were not multicollinear.ResultsRelative alien species richness and the sum of alien species covers varied across regions and habitat types, with effects being more pronounced at the maximum rather than average responses. Both response variables declined with increasing elevation and distance to the nearest road or railroad and increased with the amount of sealed soil. Maxima in fitted functions matched plots from regional invasion hotspots in northwestern and central Europe. RFs accounted for 39.6% and 20.9% of the total variation in relative alien species richness and the sum of alien species covers, respectively, with region and habitat being the most important variables.ConclusionsThe importance of maximum response quantiles and the prevalence of regional hotspots point to invasion debt in European woodlands. As alien plants expand further, their species richness and abundance in woodlands will be likely driven by the shared effects of the introduction and planting history, differences in the invaded habitat types, and dispersal corridors.
Body composition and determinant factors among mother–child pairs (6–8 months) in rural areas of Senegal
Authors: Badiane Abdou , Diouf Adama , Sylla Papa M. D. D. , Cissé Ndeye S. , Idohou‐Dossou Nicole , Dramaix Michèle , Wade Salimata , Donnen Philippe 
Published: March 2021

AbstractThis cross‐sectional study was conducted to determine the association between selected characteristics and body composition of mothers and children in early life. This study included 213 mother–child pairs 6 to 8 months involving in the cohort study of the Research and Development Project conducted in Kaffrine district. The main outcomes were fat‐free mass (FFM) and body fat (BF), measured using deuterium dilution method and anthropometry. Independent variables were sociodemographic, dietary diversity and health characteristics. Descriptive, correlation, bivariate and multiple regression analyses were conducted. According to body mass index (BMI), 23% of mothers were underweight, 12% were overweight/obese and 11% had excess BF. Four per cent of children were below −2 weight‐for‐length z‐score (WLZ), 10% were below −2 length‐for‐age z‐score (LAZ) and 40% had excess BF. Maternal FFM was positively correlated with child FFM (r = 0.25, P = 0.002). Similarly, mothers' BMI, FFM and BF were significantly and positively correlated with children's LAZ. Stepwise regression showed an increased association between minimum dietary diversity (MDD) and WLZ score, FFM and BF of children. Among mothers, being employee and doing reproductive health care were determinants of higher BMI, FFM and BF. This study found a strong association between maternal and child body composition in early life. Adequate diet is the main determinant of children nutritional status. Among the mothers, having a job and doing primary health care seem to be beneficial for the nutritional status. Improvement of women's empowerment, quality of health care and dietary diversity could have a positive impact on maternal and child nutrition.
Adult male Cuvier's beaked whales (Ziphius cavirostris) engage in prolonged bouts of synchronous diving
Authors: Cioffi William R. , Quick Nicola J. , Foley Heather J. , Waples Danielle M. , Swaim Zachary T. , Shearer Jeanne M. , Webster Daniel L. , Friedlaender Ari S. , Southall Brandon L. , Baird Robin W. , Nowacek Douglas P. , Read Andrew J. 
Published: March 2021

AbstractStudies of the social behavior of Cuvier's beaked whales (Ziphius cavirostris) are challenging because of their deep‐water habitat usually far from shore and the limited time they spend at the surface. The sociality of these deepest diving mammals is of interest, however, especially for our understanding of how social systems evolve in extreme habitats. High levels of scarring suggest that males compete agonistically for access to females and so we predicted that associations among adult males would be unstable due to competitive exclusion. We tested this prediction by evaluating the diving behavior of animals within social groups off Cape Hatteras, North Carolina, considering diving synchrony a proxy for group membership. Using data from satellite‐linked depth‐recording tags, we found that adult male–male pairs showed extended periods of synchrony in diving behavior, while all pairs that included an adult male with an individual of another age and/or sex dove synchronously for less than a day. We assessed three hypotheses to explain these surprising results: sexual segregation; extended bouts of male–male competition; and the presence of male alliances. Finally, we considered testable predictions to distinguish among these explanations.
Sphingolipid long‐chain base hydroxylation influences plant growth and callose deposition in Physcomitrium patens
Authors: Gömann Jasmin , Herrfurth Cornelia , Zienkiewicz Agnieszka , Ischebeck Till , Haslam Tegan M. , Hornung Ellen , Feussner Ivo 
Published: March 2021

Summary

Sphingolipids are enriched in microdomains in the plant plasma membrane (PM). Hydroxyl groups in the characteristic long‐chain base (LCB) moiety might be essential for the interaction between sphingolipids and sterols during microdomain formation. Investigating LCB hydroxylase mutants in Physcomitrium patens might therefore reveal the role of certain plant sphingolipids in the formation of PM subdomains.

Physcomitrium patens mutants for the LCB C‐4 hydroxylase S4H were generated by homologous recombination. Plants were characterised by analysing their sphingolipid and steryl glycoside (SG) profiles and by investigating different gametophyte stages.

s4h mutants lost the hydroxyl group at the C‐4 position of their LCB moiety. Loss of this hydroxyl group caused global changes in the moss sphingolipidome and in SG composition. Changes in membrane lipid composition may trigger growth defects by interfering with the localisation of membrane‐associated proteins that are crucial for growth processes such as signalling receptors or callose‐modifying enzymes.

Loss of LCB‐C4 hydroxylation substantially changes the P. patens sphingolipidome and reveals a key role for S4H during development of nonvascular plants. Physcomitrium patens is a valuable model for studying the diversification of plant sphingolipids. The simple anatomy of P. patens facilitates visualisation of physiological processes in biological membranes.
Potential Link between Ossification of Nuchal Ligament and the Risk of Cervical Ossification of Posterior Longitudinal Ligament: Evidence and Clinical Implication from a Meta‐Analysis of 8429 Participants
Authors: Zhang Baoliang , Chen Guanghui , Gao Xingshuai , Chen Zhongqiang 
Published: March 2021

ObjectiveThe aim of the present paper was to evaluate the strength and the magnitude of the association between ossification of the nuchal ligament (ONL) and the risk of cervical ossification of the posterior longitudinal ligament (COPLL) and to determine whether there is a direct association or whether COPLL is a consequence of shared risk factors.MethodsMedline, Web of Science, Cochrane Library, and Embase databases were searched for studies evaluating the association of COPLL‐ONL published before July 2020. Eligible studies were selected based on certain inclusion and exclusion criteria. Two investigators independently conducted the quality assessment and extracted the data, including study designs, countries, patients' age, gender, body mass index (BMI), and the risk of COPLL between individuals with and without ONL. A meta‐analysis of homogenous data, a sensitivity analysis, a publication bias assessment, and a subgroup analysis were performed using Stata 12.0 software.ResultsA total of 10 cohort studies involving 8429 participants were incorporated into this analysis. Pooled results demonstrated a statistically significant association between the presence of ONL and the increased COPLL risk (odds ratio [OR] 3.84; 95% confidence interval [CI] 2.68–5.52, P < 0.001). Furthermore, subgroup analyses indicated that this association was independent of study design (6.36‐fold in case‐control studies vs 3.22‐fold in cross‐sectional studies), sex (6.33‐fold in male–female ratio >2.5 vs 2.91‐fold in male–female ratio <2.5), age (4.28‐fold in age ≥55 years vs 3.45‐fold in age <55 years), and BMI (3.88‐fold in BMI ≥ 25 kg/m2 vs 2.43‐fold in BMI < 25 kg/m2), which also indicated that obese, older male patients with ONL had a higher risk of OPLL. Moreover, combined two articles revealed that patients with larger‐type ONL had a significantly higher risk of long‐segment COPLL compared with controls (OR 1.86; 95% CI 1.41–2.47, P < 0.001).ConclusionThis is the first meta‐analysis to demonstrate a strong and steady association between ONL and higher risk of COPLL. This association was independent of sex, age, and BMI. Considering that ONL is generally asymptomatic and easily detectable on X‐ray, our findings implied that ONL might serve as an early warning sign of the onset of COPLL and provide clinicians an opportunity for early detection and early intervention.
Usefulness of a Three‐Dimensional‐Printed Model in the Treatment of Irreducible Atlantoaxial Dislocation with Transoral Atlantoaxial Reduction Plate
Authors: Tu Qiang , Chen Hu , Ma Xiang‐yang , Wang Jian‐hua , Zhang Kai , Xu Jian‐zhong , Xia Hong 
Published: March 2021

ObjectiveTo evaluate the usefulness of a 3D‐printed model for transoral atlantoaxial reduction plate (TARP) surgery in the treatment of irreducible atlantoaxial dislocation (IAAD).MethodsA retrospective review was conducted of 23 patients (13 men, 10 women; mean age 58.17 ± 5.27 years) with IAAD who underwent TARP from January 2015 to July 2017. Patients were divided into a 3D group (12 patients) and a non‐3D group (11 patients). A preoperative simulation process was undertaken for the patients in the 3D group, with preselection of the TARP system using a 3D‐printed 1:1 scale model, while only imaging data was used for the non‐3D group. Complications, clinical outcomes (Japanese Orthopaedic Association [JOA] and visual analogue score [VAS]), and image measurements (atlas–dens interval [ADI], cervicomedullary angle [CMA], and clivus‐canal angle [CCA]) were noted preoperatively and at the last follow up.ResultsA total of 23 patients with a follow‐up time of 16.26 ± 4.27 months were included in the present study. The surgery duration, intraoperative blood loss, and fluoroscopy times in the 3D group were found to be shorter than those in non‐3D group, with statistical significance. The surgery duration was 3.29 ± 0.45 h in the 3D group and 4.68 ± 0.90 h in the non‐3D group, and the estimated intraoperative blood loss was 131.67 ± 43.03 mL in the 3D group and 185.45 ± 42.28 mL in the non‐3D group. No patients received blood transfusions. The intraoperative fluoroscopy times were 5.67 ± 0.89 in the 3D group and 7.91 ± 1.45 in the non‐3D group. Preoperatively and at last follow up, JOA and VAS scores and ADI, CCA, and CMA were improved significantly within the two groups. However, no statistical difference was observed between the two groups. However, surgical site infection occurred in 1 patient in the 3D group, who underwent an emergency revision operation of the removal of TARP device and posterior occipitocervical fixation; the patient recovered 2 weeks after the surgery. In 2 patients in the traditional group, a mistake occurred in the placement of screws, with no neurological symptoms related to the misplacement.ConclusionPreoperative surgical simulation using a 3D‐printed real‐size model is an intuitive and effective aid for TARP surgery for treating IAAD. The 3D‐printed biomodel precisely replicated patient‐specific anatomy for use in complicated craniovertebral junction surgery. The information was more useful than that available with 3D reconstructed images.
Diagnostic Accuracy of the Synovial Fluid α‐Defensin Lateral Flow Test in Periprosthetic Joint Infection: A Meta‐analysis
Authors: Zeng Yu‐qing , Deng Shu , Zhu Xing‐yang , Sun Xiao‐bo , Feng Wen‐jun , Zeng Jian‐chun , Zhang Hai‐tao , Zeng Yi‐rong 
Published: March 2021

ObjectivesThere is a controversy on the diagnostic reliability and accuracy of synovial fluid α‐defensin in periprosthetic joint infection (PJI). We performed this meta‐analysis to evaluate the diagnostic accuracy of the α‐defensin lateral flow test in PJI.MethodsPubMed, Embase, and the Cochrane library were systematically searched, and articles (up to January 2020) on the diagnosis of hip and knee PJIs using the α‐defensin Synovasure lateral flow test were included. The diagnostic accuracy of the α‐defensin lateral flow test in PJI was evaluated using meta‐analysis. The pooled sensitivity, specificity, accuracy, positive and negative likelihood ratio, diagnostic odds ratio, and post‐test probabilities were calculated.ResultsSeventeen studies including 1443 cases were included. Meta‐analysis showed the pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, and a diagnostic odds ratio was 0.83 (95% CI 0.77, 0.88), 0.95 (95% CI 0.93, 0.97), 16.86 (95% CI 11.67, 24.37), 0.17 (95% CI 0.13, 0.24) and 85.30 (95% CI 47.76, 152.35), respectively. The area under the hierarchical summary receiver operating characteristic curve was 0.97 (95% CI 0.95, 0.98). Subgroup analysis also confirmed the high efficiency of α‐defensin Synovasure lateral flow test in diagnosing PJIs, irrespective of ethnicity. Fagan's nomogram analysis there was a high positive post‐test probability of 94% and a low negative post‐test probability of 15%.ConclusionsWe indicated that the α‐defensin lateral flow test had a high accuracy for diagnosing PJI. Large‐scale studies are needed to validate its significance in PJI diagnosis.
‘Everyone's so kind and jolly it boosts my spirits, if you know what I mean’: A humanising perspective on exercise programme participation
Authors: Killingback Clare , Tsofliou Fotini , Clark Carol 
Published: March 2021

AbstractBackgroundMaintaining a physically active lifestyle across the life course can add to an individual's health and well‐being. Many people are insufficiently active to achieve these gains with a trend towards further decreases in activity as people age. Community‐based group exercise programmes have been shown to be one means of increasing sustained activity levels for older people.AimTo understand how and why older people sustain participation to community‐based group exercise programmes from a humanising perspective.MethodsA multiple‐case study approach was employed to study three exercise programmes in the South‐West of England. Data were collected through participant observation, focus groups and documentation. Data were analysed with deductive thematic analysis and mapped against the humanisation framework.ResultsFindings suggest that the humanising nature of these particular exercise programmes supported sustained participation. In these programmes, agency was evidenced in the way participants self‐selected their level of exertion with exercises. There was freedom to be their unique selves and exercise within the limits of their insider challenges of an ageing body. Through this non‐judgemental exercise environment, there was an embodied understanding of who they were as people. The exercise programme became part of their personal journey. This journey helped inform their future by enabling them to keep active and maintain independence, allowing them to continue engaging in the world. There was a sense of togetherness and belonging which led to feelings of homeliness as they found a sense of place within the group. The friendships they formed helped them make sense and add meaning to their experiences and personal health challenges.ConclusionsWhen planning exercise environments to support the long‐term adoption of a sustained behaviour change, in the form of physical activity for older people, it is helpful to consider dimensions that make an individual feel human.
Effects of experienced regret on risky decision making are dependent on risky degree
Authors: Lin Huiyan , Liang Jiafeng , Yang Junkai , Wu Fei 
Published: March 2021

We investigated whether experienced regret influences risky decision making in future dissimilar situations and whether this effect is affected by risky degree. Therefore, participants (N = 39 and 54 in Experiment 1 and 2, respectively) were asked to select one of the two options. In the experienced regret condition, the selected option was worse than the unselected option; in the control condition, the information about the unselected option was unknown to the participants. Subsequently, participants were required to either keep the selected option or to gamble. Additionally, Experiment 2 varied in risky degree of the gamble from low to high. Results showed that experienced regret enhanced possibilities of gamble under low risk (Experiment 1 and 2). Under high risk, however, the effect of experienced regret was reversed (Experiment 2). The findings might suggest that experienced regret affects risky decision making in future dissimilar situations dependently on risky degree.
The rice LEC1‐like transcription factor OsNF‐YB9 interacts with SPK, an endosperm‐specific sucrose synthase protein kinase, and functions in seed development
Authors: Niu Baixiao , Zhang Zhenyu , Zhang Juan , Zhou Yong , Chen Chen 
Published: March 2021

SUMMARYLEAFY COTYLEDON1 (LEC1), a NUCLEAR FACTOR‐Y (NF‐Y) family member, plays a critical role in embryogenesis and seed development in Arabidopsis. Previous studies have shown that rice OsNF‐YB9 and OsNF‐YB7 are homologous to Arabidopsis LEC1. However, the functions of LEC1‐like genes in rice remain unclear. Here we report that OsNF‐YB9 and OsNF‐YB7 display sub‐functionalization in rice. We demonstrate that OsNF‐YB7 is expressed mainly in the embryo, whereas OsNF‐YB9 is preferentially expressed in the developing endosperm. Heterologous expression of either OsNF‐YB9 or OsNF‐YB7 in Arabidopsis lec1‐1 was able to complement the lec1‐1 defects. We failed to generate osnf‐yb7 homozygous mutants due to lethality caused by OsNF‐YB7 defects. Loss of OsNF‐YB9 function caused abnormal seed development: seeds were longer, narrower and thinner and exhibited a higher chalkiness ratio. Furthermore, the expression of genes related to starch synthesis was deregulated in osnf‐yb9. OsNF‐YB9 could interact with SPK, a sucrose synthase protein kinase that is predominantly expressed in rice endosperm. Knockout of SPK resulted in chalky seeds similar to those observed in the osnf‐yb9 mutants. Ectopic expression of OsNF‐YB9 in both rice and Arabidopsis resulted in unhealthy plants with small seeds. Taken together, these results suggest a critical role for OsNF‐YB9 in rice seed development.
A study into the fatty acid content of selected veterinary diets, supplements and fish oil capsules in Australia
Authors: Martinez Nicola , McDonald Beth 
Published: March 2021

BackgroundDogs with cutaneous diseases often receive supplementation with omega‐3 (n‐3) and omega‐6 (n‐6) essential fatty acids (FA), either through their diet or the use of an oral supplement. Labelling on these products is not always clear, especially regarding the total and relative amounts of FA.ObjectivesTo provide clinicians with a breakdown of the FA content of selected veterinary diets, supplements and fish oil capsules so that the daily dose of supplementation can be calculated more easily. Repeated measurements of FA content over time demonstrate whether FA content changes temporally.Methods and materialsEight veterinary diets, four veterinary oral FA supplements and four fish oil supplements were analysed for FA content by gas chromatography at days 0, 28 and 56.ResultsThe n‐6:n‐3 ratio varied among the supplement types with the food samples having higher ratios than the liquid supplements and fish oil capsules. The composition of n‐3 FA differed between products with some having higher concentrations of the less active n‐3 FA alpha‐linolenic acid than eicosapentaenoic acid and docosahexaenoic acid. No decreases in FA content over time were detected.Conclusions and clinical relevanceThe results of this study provide the reader with a means to calculate the FA concentrations that their patient is receiving for each product tested, as well as allowing them to compare products for their differences in n‐6:n‐3 ratios and relative amounts of individual FA molecules. The FA concentrations did not change significantly over 56 days.
The role of affect, satisfaction and internal drive on personal moral norms during COVID‐19
Authors: Veseli Besarta , Koch Elena , Soliman Meikel , Sandner Sabrina , Studte Sinika , Clement Michel 
Published: March 2021

Background and ObjectiveSocieties require prosocial activities during crises. The COVID‐19 pandemic presents individuals with unique challenges that may affect their emotional state leading to reformed personal moral norms. Crucially, personal moral norms are important predictors of moral behaviour. Given the longevity of the pandemic, studying its impact on affect, satisfaction and internal drive of (non‐)donors during COVID‐19 and if personal moral norms are affected is paramount.Material and MethodsThis study relies on longitudinal data, consisting of six waves carried out biweekly. Our panel is representative for the German population, capturing changes in affect, satisfaction, internal drive and personal moral norms. We compare the emotional state and personal moral norms of (non‐)donors in the pandemic to pre‐pandemic phase. Moreover, we analyse changes in emotional state and personal moral norms during the pandemic and investigate the role of emotional state on personal moral norms.ResultsFirstly, our results show that personal moral norms of (non‐)donors drop compared to pre‐pandemic. Within pandemic, personal moral norms of active donors are not further altered. Secondly, we find significant changes of emotional state in the pandemic compared to pre‐pandemic phase, for example individuals feel more optimistic, but less satisfied and less energetic. Thirdly, we find that feeling more grateful increases personal moral norms of non‐donors.ConclusionThis study provides insights into how crises shape (non‐)donors’ emotional state and its impact on relevant donor motivations, that is, personal moral norms. Blood banks can use this knowledge to enhance recruiting and retention efforts during crises.