bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis, structural characterization, and photoluminescence properties of Eu3+‐doped Mg3‐xEux(BO3)2 phosphor
Authors: Uztetik Morkan Ayse , Gul Esra 
Published: January 2018

AbstractEu3+‐doped Mg3‐xEux(BO3)2 (x = 0.000, 0.005, 0.010, 0.020, 0.050, and 0.100) phosphors were synthesized for the first time by solution combustion synthesis method, which is a fast synthesis method for obtaining nano‐sized borate powders. The optimization of the synthesis conditions of phosphor materials was performed by TG/DTA method. These phosphors were characterized by XRD, FTIR, SEM‐EDX, and photoluminescence, PL analysis. The XRD analysis exhibited that all of the prepared ceramic compounds have been crystallized in orthorhombic structure with space group Pnnm. Also, the influence of europium dopant ions on unit cell parameters of host material was analyzed using Jana2006 program and the crystalline size was determined by Debye‐Scherrer's formula. The luminescence properties of all Eu3+‐doped samples were investigated by excitation and emission spectra. The excitation spectra of Mg3‐xEux(BO3)2 phosphors show characteristic peak at 420 nm in addition to other characteristic peaks of Eu3+ under emission at 613 nm. The emission spectra of Eu3+‐doped samples indicated most intensive red emission band dominated at 630 nm belonging to 5D0→7F2 magnetic dipole transition. Furthermore, the optimum or quenching concentration of Eu3+ ion has been determined as x = 0.010 showed the maximum emission intensity when it was excited at 394 nm.
Development of a green two‐dimensional HPLC‐DAD/ESI‐MS method for the determination of anthocyanins from Prunus cerasifera var. atropurpurea leaf and improvement of their stability in energy drinks
Authors: Chen Fang‐Fang , Sang Jie , Zhang Yao , Sang Jun 
Published: January 2018

SummaryThis study aimed to develop a green two‐dimensional HPLC‐DAD/ESI‐MS method for analysing anthocyanins from Prunus cerasifera var. atropurpurea leaf and improve their stability in energy drinks by the addition of phenolic acids. Ethanol and tartaric acid solutions were used as mobile phases for one‐dimensional HPLC‐DAD for quantitative analysis of anthocyanins, and the primary anthocyanins were identified as cyanidin‐3‐O‐galactoside, cyanidin‐3‐O‐glucoside and cyanidin‐3‐O‐rutinoside using two‐dimensional HPLC‐MS. Method validation showed that the developed method was accurate, stable and reliable for the analysis of P. cerasifera anthocyanins. The effects of gallic, ferulic and caffeic acid on the stability of cyanidin‐3‐O‐galactoside, cyanidin‐3‐O‐glucoside, cyanidin‐3‐O‐rutinoside and total anthocyanins from P. cerasifera leaf in energy drinks were evaluated, and the degradation of P. cerasifera anthocyanins ideally followed a first‐order model (R2 > 0.98). Gallic acid showed stronger protective effects on P. cerasifera anthocyanins in energy drinks, and adding/increasing ferulic and caffeic acids accelerated the degradation reactions.
Relationship between meaningful work and job performance in nurses
Authors: Tong Ling 
Published: January 2018

AbstractAimsThe present study was designed to determine the relationship between meaningful work and job performance, and the impact of meaningful work on nursing care quality.BackgroundMeaningful work has been suggested as a significant factor affecting job performance, but the relationship has never been studied in nurses in China.DesignA descriptive correlational study was designed to assess the level of meaningful work, tasks, and contextual performance as well as their relationships.MethodsWe used a stratified random‐sampling approach to enrol nurses from hospitals. Multivariate regression analysis was applied to determine the relationship between meaningful work and their demographic data.ResultsThere were significant, positive relationships between meaningful work and task performance and contextual performance. Education level, work unit, and employment type influenced meaningful work. The work motivation score of the nurses was lower than that of the other 2 dimensions, and a negative work motivation score negatively influenced job performance.ConclusionImproving meaningful work and providing more support and assistance could improve nurse performance, thereby improving the quality of nursing care.
Temporally stable frequency mapping using continuous wavelet transform analysis in patients with persistent atrial fibrillation
Authors: Kimata Akira , Yokoyama Yasuhiro , Aita Satoshi , Nakamura Hiroaki , Higuchi Koji , Tanaka Yasuaki , Nogami Akihiko , Hirao Kenzo , Aonuma Kazutaka 
Published: January 2018

AbstractIntroductionDominant frequency (DF) derived from fast Fourier transform (FFT) analysis has failed to guide atrial fibrillation (AF) ablation since it cannot guarantee temporal stability. Continuous wavelet transform (CWT) analysis is another frequency analysis that can show the temporal stability of a frequency.Methods and resultsForty‐four consecutive patients with persistent AF (PeAF) underwent pulmonary vein (PV) isolation (PVI) as the first‐time catheter ablation. The PVs and left atrium were mapped and electrograms (EGMs) were recorded for 30 seconds at each site. Pseudo‐frequency (PF) and coefficient of variation (CV) were calculated by CWT analysis. A PF with CV ≤ 10 was defined as a temporally stable PF (sPF). DF was also calculated by traditional FFT analysis from the first 5 seconds of the recorded EGMs. The highest sPF was shown inside the PVs in 20 patients (PV group), and at the non‐PV sites in 24 patients (non‐PV group). During the follow‐up period of 15.3 ± 4.4 months, the ablation success rate in the PV group was significantly higher than that in the non‐PV group (90% vs. 62%, P = 0.023). The location of the highest DF did not have a significant effect on ablation success rate between inside the PVs and at the non‐PV sites.ConclusionPVI results for PeAF were significantly worse for patients with highest sPF at the non‐PV sites compared to patients with highest sPF sites inside the PVs. CWT analysis during AF could be used to verify whether PVI alone is sufficient for the first‐time catheter ablation in patients with PeAF.
Food addiction and associations with mental health symptoms: a systematic review with meta‐analysis
Authors: Burrows T. , Kay‐Lambkin F. , Pursey K. , Skinner J. , Dayas C. 
Published: January 2018

AbstractBackgroundThe present study systematically reviewed the literature aiming to determine the relationships between food addiction, as measured by the Yale Food Addiction Scale (YFAS), and mental health symptoms.MethodsNine databases were searched using keywords. Studies were included if they reported: (i) YFAS diagnosis or symptom score and (ii) a mental health outcome, as well as the association between (i) and (ii). In total, 51 studies were included.ResultsThrough meta‐analysis, the mean prevalence of food addiction diagnosis was 16.2%, with an average of 3.3 (range 2.85–3.92) food addiction symptoms being reported. Subanalyses revealed that the mean number of food addiction symptoms in populations seeking treatment for weight loss was 3.01 (range 2.65–3.37) and this was higher in groups with disordered eating (mean 5.2 3.6–6.7). Significant positive correlations were found between food addiction and binge eating [mean r = 0.602 (0.557–0.643), P < 0.05], depression, anxiety and food addiction [mean r = 0.459 (0.358–0.550), r = 0.483 (0.228–0.676), P < 0.05, respectively].ConclusionsA significant, positive relationship exists between food addiction and mental health symptoms, although the results of the present study highlight the complexity of this relationship.
THE RETIREMENT‐SAVINGS PUZZLE REVIEWED: THE ROLE OF HOUSING AND BEQUESTS
Authors: Suari‐Andreu Eduard , Alessie Rob , Angelini Viola 
Published: January 2018

AbstractThe so‐called retirement‐savings puzzle is a phenomenon by which, contrary to what the standard life‐cycle model predicts, households do not run down their wealth significantly during retirement. In this review paper, we survey the literature on the retirement‐savings puzzle and we connect it with the literature on housing equity during retirement. To establish a link between these two streams of literature, we use as a framework the work of Nakajima and Telyukova (2013a, Home equity in retirement, UCSD Working Paper) and Nakajima and Telyukova (2017, Reverse mortgage loans: a quantitative analysis,Journal of Finance72: 911–950), who find that home‐ownership interacts with factors that explain the retirement‐savings puzzle, notably with the bequest motive. We complement the results by Nakajima and Telyukova by relating them to the literature on altruistic bequests, strategic bequests and housing as a commitment device, all of which give further insights on the connection between home‐ownership and bequests. We complement our review of the literature with descriptive evidence using the Netherlands as a case study.
CAIDE Dementia Risk Score, Alzheimer and cerebrovascular pathology: a population‐based autopsy study
Authors: Hooshmand B. , Polvikoski T. , Kivipelto M. , Tanskanen M. , Myllykangas L. , Mäkelä M. , Oinas M. , Paetau A. , Solomon A. 
Published: January 2018

AbstractBackgroundCAIDE Dementia Risk Score is a tool for estimating dementia risk in the general population. Its longitudinal associations with Alzheimer or vascular neuropathology in the oldest old are not known.AimTo explore the relationship between CAIDE Dementia Risk Score at baseline and neuritic plaques, neurofibrillary tangles, cerebral infarcts and cerebral amyloid angiopathy (CAA) after up to 10‐year follow‐up in the Vantaa 85 + population.MethodsStudy population included 149 participants aged ≥85 years, without dementia at baseline, and with available clinical and autopsy data. Methenamine silver staining was used for β‐amyloid and modified Bielschowsky method for neurofibrillary tangles and neuritic plaques. Macroscopic infarcts were identified from cerebral hemispheres, brainstem and cerebellum slices. Standardized methods were used to determine microscopic infarcts, CAA and α‐synuclein pathologies. The CAIDE Dementia Risk Score was calculated based on scores for age, sex, BMI, total cholesterol, systolic blood pressure, physical activity and APOEε4 carrier status (range 0–18 points).ResultsA CAIDE Dementia Risk Score above 11 points was associated with more cerebral infarctions up to 10 years later: OR (95% CI) was 2.10 (1.06–4.16). No associations were found with other neuropathologies.ConclusionIn a population of elderly aged ≥85 years, higher CAIDE Dementia Risk Score was associated with increased risk of cerebral infarcts.
Cultivation of seaweedGracilaria lemaneiformisenhanced biodiversity in a eukaryotic plankton community as revealed via metagenomic analyses
Authors: Chai Zhao Yang , He Zhi Li , Deng Yun Yan , Yang Yu Feng , Tang Ying Zhong 
Published: January 2018

AbstractPlankton diversity reflects the quality and health of waters and should be monitored as a critical feature of marine ecosystems. This study applied a pair of 28S rRNAgene‐specific primers and pyrosequencing to assess the effects of large‐scale cultivation of the seaweedGracilaria lemaneiformison the biodiversity of eukaryotic plankton community in the coastal water of Guangdong, China. With 1 million sequences (2,221 operational taxonomic units [OTUs]) obtained from 51 samples, we found that the biodiversity of eukaryotic plankton community was significantly higher in the seaweed cultivation area than that in the nearby control area as reflected inOTUrichness, evenness (Shannon–Wiener index) and dominance (Simpson index) for total plankton community and its four subcategories whenGracilariabiomass reached the maximum, while no such a significant difference was observed before seaweed inoculation. Our laboratory experiment using an artificial phytoplankton community of nine species observed the same effects ofGracilariaexposure. Principal component analysis and principal coordinates analysis showed the plankton community structure in cultivation area markedly differed from the control area whenGracilariabiomass reached its maximum. Redundancy analysis showed thatG. lemaneiformiswas the critical factor in controlling the dynamics of eukaryotic plankton communities in the studied coastal ecosystem. Our results explicitly demonstratedG. lemaneiformiscultivation could enhance biodiversity of plankton community via allelopathy, which prevents one or several plankton species from blooming and consequently maintains a relatively higher biodiversity. Our study provided further support for using large‐scaleG. lemaneiformiscultivation as an effective approach for improving costal ecosystem health.
Philip Grime's fourth corner: are there plant species adapted to high disturbance and low productivity?
Authors: Herben Tomáš , Klimešová Jitka , Chytrý Milan 
Published: January 2018

Grime's CSR species life‐strategy theory (competition–stress–ruderality) provides a conceptual framework to classify species into competitive (growing under high productivity, low disturbance), stress‐tolerant (low productivity, low disturbance) and ruderal (high productivity, high disturbance). Importantly, this classification is based on the assumption that the niche space of disturbance and productivity is filled unevenly: while in productive habitats species can adapt to different disturbance regimes, species of low‐productivity and disturbed habitats do not exist, resulting in a triangular distribution of species optima along axes of disturbance and productivity. This assumption has often been criticised, but it has not yet been put under a rigorous test.Here we use existing data on niche positions of central European plant species to test this hypothesis, namely its prediction that species adapted to jointly stressed (low‐productive) and disturbed habitats do not exist. We use Ellenberg indicator values and newly developed indicator values for disturbance as proxies of species positions in the space of productivity and disturbance.We found that positions of species optima along the gradients of productivity and disturbance severity are not independent of each other, with very few species adapted to low‐productive and severely disturbed habitats. In contrast, there is no relationship between productivity and disturbance frequency; a number of species occur in low‐productive and frequently disturbed habitats. The relationship between productivity and disturbance severity can be either due to tradeoffs between life history traits responsible for response to disturbance and productivity (as originally assumed by Grime) or due to historical rarity of severely disturbed habitats in unproductive conditions and consequent absence of evolution of species adapted to them. Our data are based on one specific flora, shaped by glaciations and early introduction of agriculture, but the question of what causes this pattern can be resolved by future analyses of floras with different evolutionary and ecological histories.
Molecular sensitization patterns and influence of molecular diagnosis in immunotherapy prescription in children sensitized to both grass and olive pollen
Authors: Martínez‐Cañavate Burgos Ana , Torres‐Borrego Javier , Molina Terán Ana Belén , Corzo Jose Luis , García Blanca Esther , Rodríguez Pacheco Ramón , Moreno Aguilar Carmen , Dávila Ignacio 
Published: January 2018

AbstractBackgroundThe overlapping grass and olive pollen seasons in Spain and the phenomenon of cross‐reactivity can make it difficult to determine the true causative agent of seasonal allergic rhinitis when only skin prick tests with whole extracts are used. The aim of the GRAMOLE study was to determine sensitization patterns to the major grass and olive pollen allergens detected using specific recombinant IgE and to explore how this knowledge affected physicians’ choice of allergen‐specific immunotherapy.MethodsEpidemiological, observational, multicenter, cross‐sectional study. Results from children under 18 years of age diagnosed with seasonal allergic rhinitis by positive skin prick tests to olive and grass pollen were analyzed. Specific IgE to Phl p 1+5, Ole e 1, and Phl p 7+12 was determined. Investigators specified the optimal composition of allergen immunotherapy before and after knowing the results of the molecular diagnosis.ResultsA total of 281 patients with a mean age of 13.4 years were included. Double sensitization to both major allergens was found in vitro in 76% of children for an IgE cutoff point of 0.35 kU/L. When the molecular diagnosis results were known, specialists changed the composition of the prescribed immunotherapy in 52.87% of cases.ConclusionsDouble sensitization to grass and olive pollen is common in Spain and also occurs in the pediatric population. Molecular diagnosis using specific IgE may help improve immunotherapy selection in polysensitized patients.
A meta‐analytic review of tipping compensation practices: An agency theory perspective
Authors: Banks George C. , Woznyj Haley M. , Kepes Sven , Batchelor John H. , McDaniel Michael A. 
Published: January 2018

AbstractTipping represents a form of compensation valued at over $50 billion a year in the United States alone. Tipping can be used as an incentive mechanism to reduce a principal–agent problem. An agency problem occurs when the interests of a principal and agent are misaligned, and it is challenging for the principal to monitor or control the activities of the agent. However, past research has been limited in the investigation of the extent to which tipping is effective at addressing this problem. Following an examination of 74 independent studies with 12,271 individuals, meta‐analytic results indicate that there is a small, positive relation between service quality and percentage of a bill tipped ( = .15 without outliers). Yet, in support of the idea behind tipping, relative weights analyses illustrate that service quality was a stronger predictor of percentage of the bill tipped than food quality, frequency of patronage, and dining party size. Evidence also suggests that racial minority servers tend to be tipped less than White servers (Cohen's d = .17), and women tend to be tipped more than men (Cohen's d = .15). Still, given the magnitude of the effect, one might question if tipping is an effective compensation practice to reduce the principal–agent problem. We discuss theoretical and practical implications for future research.
Crassulacean acid metabolism in the Basellaceae (Caryophyllales)
Authors: Holtum J. A. M. , Hancock L. P. , Edwards E. J. , Winter K. 
Published: January 2018

Abstract

C4 and crassulacean acid metabolism (CAM) have evolved in the order Caryophyllales many times but neither C4 nor CAM have been recorded for the Basellaceae, a small family in the CAM‐rich sub‐order Portulacineae.

24 h gas exchange and day–night changes in titratable acidity were measured in leaves of Anredera baselloides exposed to wet–dry–wet cycles.

While net CO2 uptake was restricted to the light period in well‐watered plants, net CO2 fixation in the dark, accompanied by significant nocturnal increases in leaf acidity, developed in droughted plants. Plants reverted to solely C3 photosynthesis upon rewatering.

The reversible induction of nocturnal net CO2 uptake by drought stress indicates that this species is able to exhibit CAM in a facultative manner. This is the first report of CAM in a member of the Basellaceae.
Vitamin D and respiratory health in the Busselton Healthy Ageing Study
Authors: Mulrennan Siobhain , Knuiman Matthew , Walsh John P. , Hui Jennie , Hunter Michael , Divitini Mark , Zhu Kun , Cooke Brian R. , Musk Arthur W. (Bill) , James Alan 
Published: January 2018

ABSTRACTBackground and objectiveThe relationship between vitamin D and respiratory disease was examined by cross‐sectional analysis of a large community‐based sample.MethodsSerum 25‐hydroxyvitamin D (25OHD) and history of respiratory disease, symptoms (recorded by questionnaire) and spirometry were measured in 5011 adults aged 45–69 years. Adjustments were made for age, sex, season and smoking (Model A), plus body mass index (BMI) and physical activity level (Model B), plus history of chronic diseases (Model C).ResultsMean (SD) age was 58 (SD 6) years with 45% males, 10% current smokers and 12% taking vitamin D supplements. The prevalence of 25OHD level <50 nmol/L was 8.0%. In all the three models, 25OHD <50 nmol/L was significantly associated with asthma (Model C: odds ratio (OR): 1.32; 95% CI: 1.00, 1.73), bronchitis (1.54; 1.17, 2.01), wheeze (1.37; 1.10, 1.71) and chest tightness (1.42; 1.10, 1.83). Participants with vitamin D level > 100 nmol/L had higher forced vital capacity (FVC) in all the three models (1.17% higher, compared with the 50–100 nmol/L group in Model C).ConclusionLow levels of serum 25OHD were independently associated with asthma, bronchitis, wheeze and chest tightness after three levels of adjustment for potential confounders. Higher vitamin D levels were associated with higher levels of lung function.
The Functional Latent Block Model for the Co-Clustering of Electricity Consumption Curves
Authors: Bouveyron Charles , Bozzi Laurent , Jacques Julien , Jollois François-Xavier 
Published: January 2018

SummaryAs a consequence of recent policies for smart meter development, electricity operators nowadays can collect data on electricity consumption widely and with a high frequency. This is in particular so in France where the leading electricity company Électricité de France will be able soon to record the consumption of its 27 million clients remotely every 30 min. We propose in this work a new co-clustering methodology, based on the functional latent block model (LBM), which enables us to build ‘summaries’ of these large consumption data through co-clustering. The functional LBM extends the usual LBM to the functional case by assuming that the curves of one block live in a low dimensional functional subspace. Thus, the functional LBM can model and cluster large data sets with high frequency curves. A stochastic expectation–maximization–Gibbs algorithm is proposed for model inference. An integrated information likelihood criterion is also derived to address the problem of choosing the number of row and column groups. Numerical experiments on simulated and original Linky data show the usefulness of the methodology proposed.
Interpersonal Trust and Suicide Ideation Among Adolescent Psychiatric Inpatients: An Indirect Effect via Perceived Burdensomeness
Authors: Hill Ryan M. , Penner Francesca , Vanwoerden Salome , Mellick William , Kazimi Iram , Sharp Carla 
Published: January 2018

The identification of theoretically and empirically supported correlates of suicide ideation is important to improve treatment approaches to suicide. This study sought to examine the association between interpersonal trust (theoretically conceptualized as a distal risk marker) and suicide ideation in adolescence. Specifically, it was hypothesized that interpersonal trust would be negatively associated with suicide ideation via perceived burdensomeness and thwarted belongingness (conceptualized as more proximal risk markers). Data were drawn from a cross‐sectional sample of 387 adolescent inpatients between the ages of 12 and 17 years (M = 14.72, SD = 1.49). The sample was 63.6% female, 37.5% Hispanic, 26.9% African American/Black, and 25.8% Caucasian. Adolescents completed a series of self‐report measures to assess thwarted belongingness, perceived burdensomeness, interpersonal trust, depressive symptoms, and suicide ideation. A structural equation model was fit to the data, and results demonstrated a significant indirect path from interpersonal trust to suicide ideation via perceived burdensomeness, but not thwarted belongingness. Results suggest that interpersonal trust may be a distal risk marker for suicide ideation and that interventions to increase interpersonal trust may help prevent the development of thwarted belongingness, perceived burdensomeness, and suicide ideation.