bluuebunny/crossref_metadata_2025_split huggingface dataset:
Attitudes towards working in retirement: a latent class analysis of older workers’ motives
Authors: Hess Moritz , Naegele Laura , Mäcken Jana 
Published: October 2020

AbstractOne of the fastest growing labour market groups is working pensioners, meaning those who work past the statutory retirement age whilst receiving a pension. Previous research has investigated the motives of this group and found very heterogeneous reasons for employment in retirement. However, little is known about the expectations and preferred work arrangements of older workers regarding a potential post-retirement employment. Using data from the German survey transitions and old age potential, we explore older workers’ motives, preferences and expectations towards working in retirement. Results show that about half of the respondents plan to work in addition to receiving a pension; however, the share is higher amongst men and those with higher levels of education. The motives for staying in post-retirement employment vary as well: using latent class analysis, we find four distinct patterns of motives that can be classified as (1) financially-driven, (2) status-driven, (3) contact and fun-driven, as well as (4) generativity-driven, underlining the complexity of retirement decisions. Furthermore, preferences regarding arrangements when combining work and retirement are very heterogeneous. Whilst highly educated men want to work as self-employed, women and those with lower qualifications want to stay in their old jobs. Only small differences were found regarding preferred hours (about 17) and days per week (2.24). In summary, the results show that the rapidly growing group of working pensioners and their preferences should be seen as characterised by differences by those responsible for creating these post-retirement employment opportunities.
Molecular diversity of the Fusarium fujikuroi species complex from maize
Authors: Jabłońska Emilia , Piątek Krzysztof , Wit Marcin , Mirzwa-Mróz Ewa , Wakuliński Wojciech 
Published: October 2020

AbstractRandom amplified polymorphic DNA (RAPD) markers were used to estimate genetic relationship and diversity of Fusarium species associated with pink ear rot of maize. Three Fusarium species – F. verticillioides, F. temperatum and F. subglutinans sensu stricto were collected from contaminated corn kernels. A collection of 41 randomly selected Fusarium isolates (16 F. verticillioides, 16 F. temperatum and nine F. subglutinans sensu stricto) was screened for polymorphism with thirty decamer primers. Seventeen primers that had generated a high number of polymorphic loci were used for the analysis of genetic diversity. The primers yielded a total of 146 polymorphic loci, an average of 8.59 polymorphic bands per primer. The percentage of polymorphic bands (%P) was 46.1%. The RAPD-based UPGMA analysis demonstrated that although F. temperatum and F. subglutinans s.s. form two distinct groups they are more similar to each other than to F. verticillioides. Fusarium verticillioides was the most heterogenous species (Nei’s genetic diversity 0.180), while the least heterogenous one was F. subglutinans s.s. whose genetic diversity was 0.098. The analysis of the translation elongation factor 1-α and β-tubulin gene sequences as well as the mating type ratio were employed to support the RAPD data.
A possible effect of montelukast on neurological aging examined by the use of register data
Authors: Grinde Bjørn , Schirmer Henrik , Eggen Anne Elise , Aigner Ludwig , Engdahl Bo 
Published: October 2020

AbstractBackground The leukotriene receptor antagonist montelukast has been shown to rejuvenate aged brains in rats; however, data on humans are still scarce. Objective To investigate if montelukast may alleviate degenerative neurological changes using a register data. Setting Norwegian registry data analyses. Method The present observational study was based on data from the Norwegian Prescription Database and the Tromsø Study. The former has information regarding the use of prescription medicine; the latter includes tests for brain function such as subjective memory and finger-tapping. Multivariate linear regression analyses were performed to see how the use of various medications correlated with the test results, correcting for likely confounders. Main outcome measure Results on seven different tests considered relevant for neurological health were used as outcome. Results Previous use of montelukast correlated with improved scores on cognitive or neurological functioning (F = 2.20, p = 0.03 in a multivariate test). A range of other medications were tested with the same algorithm, including drugs acting on the immune system, but none of them correlated with (overall) significantly improved test results. Conclusion The present data suggest that montelukast may alleviate degenerative neurological changes associated with human aging.
Association of physical activity and sedentary time with structural brain networks—The Maastricht Study
Authors: Vergoossen Laura W. M. , Jansen J. F. A. , de Jong J. J. A. , Stehouwer C. D. A. , Schaper N. C. , Savelberg H. H. C. M. , Koster A. , Backes W. H. , Schram M. T. 
Published: October 2020

AbstractWe assessed whether objectively measured low- and high-intensity physical activity (LPA and HPA) and sedentary time (ST) were associated with white matter connectivity, both throughout the whole brain and in brain regions involved in motor function. In the large population-based Maastricht Study (n = 1715, age 59.6 ± 8.1 (mean ± standard deviation) years, and 48% women), the amounts of LPA, HPA, and ST were objectively measured during 7 days by an activPAL accelerometer. In addition, using 3T structural and diffusion MRI, we calculated whole brain node degree and node degree of the basal ganglia and primary motor cortex. Multivariable linear regression analysis was performed, and we report standardized regression coefficients (stβ) adjusted for age, sex, education level, wake time, diabetes status, BMI, office systolic blood pressure, antihypertensive medication, total-cholesterol-to-HDL-cholesterol ratio, lipid-modifying medication, alcohol use, smoking status, and history of cardiovascular disease. Lower HPA was associated with lower whole brain node degree after full adjustment (stβ [95%CI] = − 0.062 [− 0.101, − 0.013]; p = 0.014), whereas lower LPA (stβ [95%CI] = − 0.013 [− 0.061, 0.034]; p = 0.580) and higher ST (stβ [95%CI] = − 0.030 [− 0.081, 0.021]; p = 0.250) was not. In addition, lower HPA was associated with lower node degree of the basal ganglia after full adjustment (stβ [95%CI] = − 0.070 [− 0.121, − 0.018]; p = 0.009). Objectively measured lower HPA, but not lower LPA and higher ST, was associated with lower whole brain node degree and node degree in specific brain regions highly specialized in motor function. Further research is needed to establish whether more HPA may preserve structural brain connectivity.
Numerical Analysis of Blade Stress of Marine Propellers
Authors: Yu Kai , Yan Peikai , Hu Jian 
Published: October 2020

AbstractIn this study, a series of numerical calculations are carried out in ANSYS Workbench based on the unidirectional fluid–solid coupling theory. Using the DTMB 4119 propeller as the research object, a numerical simulation is set up to analyze the open water performance of the propeller, and the equivalent stress distribution of the propeller acting in the flow field and the axial strain of the blade are analyzed. The results show that FLUENT calculations can provide accurate and reliable calculations of the hydrodynamic load for the propeller structure. The maximum equivalent stress was observed in the blade near the hub, and the tip position of the blade had the largest stress. With the increase in speed, the stress and deformation showed a decreasing trend.
Effects of Curcumin on Lipid Membranes: an EPR Spin-label Study
Authors: Duda Mariusz , Cygan Kaja , Wisniewska-Becker Anna 
Published: October 2020

AbstractCurcumin is a yellow–orange dye widely used as a spice, food coloring and food preservative. It also exhibits a broad range of therapeutic effects against different disorders such as cancer, diabetes, or neurodegenerative diseases. As a compound insoluble in water curcumin accumulates in cell membranes and due to this location it may indirectly lead to the observed effects by structurally altering the membrane environment. To exert strong structural effects on membrane curcumin needs to adopt a transbilayer orientation. However, there is no agreement in literature as to curcumin’s orientation and its structural effects on membranes. Here, we investigated the effects of curcumin on lipid order, lipid phase transition, and local polarity in a model liposome membranes made of DMPC or DSPC using electron paramagnetic resonance (EPR) spin labeling technique. Curcumin affected lipid order at different depths within the membrane: it slightly increased the phospholipid polar headgroup mobility as monitored by spectral parameters of T-PC, while along the acyl chain the ordering effect was observed in terms of order parameter S. Also, rotational correlation times τ2B and τ2C of 16-PC in the membrane center were increased by curcumin. Polarity measurements performed in frozen suspensions of liposomes revealed enhancement of water penetration by curcumin in the membrane center (16-PC) and in the polar headgroup region (T-PC) while the intermediate positions along the acyl chain (5-PC and 10-PC) were not significantly affected. Curcumin at a lower concentration (5 mol%) shifted the temperature of the DMPC main phase transition to lower values and increased the transition width, and at a higher concentration (10 mol%) abolished the transition completely. The observed effects suggest that curcumin adopts a transbilayer orientation within the membrane and most probably form oligomers of two molecules, each of them spanning the opposite bilayer leaflets. The effects are also discussed in terms of curcumin’s protective activity and compared with those imposed on membranes by other natural dyes known for their protective role, namely polar carotenoids, lutein and zeaxanthin.
Mechanical analysis of deepwater drilling riser system based on multibody system dynamics
Authors: Liu Xiu-Quan , Sun He-Xiang , Yu Meng-Ru , Qiu Na , Li Yan-Wei , Liu Fu-Lai , Chen Guo-Ming 
Published: October 2020

AbstractA multibody system including a drilling riser system, tensioners and a floating platform is key equipment for offshore oil and gas drilling. Most of the previous studies only focus on the drilling riser system rather than the multibody system. Mechanical characteristics of the deepwater drilling riser system cannot be analyzed accurately in a simplified model. Therefore, a three-dimensional multibody analysis program is developed. The static and dynamic characteristics of the deepwater drilling riser system under different platform motions are analyzed based on the developed program. The results show that the static displacement of the riser system with tensioners is smaller than that without tensioners, which means the tensioners can suppress the deformation of the riser system. Under surge and sway motions of the platform, the dynamic displacement of the riser system with tensioners is also smaller than that without tensioners due to the tensioner suppression effect. Besides, the heave motion induces a uniform axial vibration of the riser system, while roll and pitch motions excite the riser system to vibrate laterally. Compared with the stress amplitude due to surge and sway motions, the stress amplitude of the riser system due to heave, roll and pitch motions is relatively small but cannot be neglected.
Development of new SNP and INDEL loci for the valuable African timber species Lophira alata
Authors: Blanc-Jolivet Celine , Mader Malte , Bouda Henri-Noël , Massot Marie , Daïnou Kasso , Yene Germain , Opuni-Frimpong Emmanuel , Degen Bernd 
Published: October 2020

AbstractThe timber of the species Lophira alata (azobe) is very popular for outdoor constructions, which favours its overexploitation and illegal logging. We sampled individuals from Liberia, Ivory Coast, Ghana, Nigeria, Cameroon, Gabon, Congo Brazzaville and Republic Democratic of Congo to discover new nuclear and plastidial SNP and INDEL loci through restriction associated DNA sequencing (RADSeq) and low coverage MiSeq genome sequencing. From an initial set of 397 loci, a final set of 126 loci was selected for timber tracking purposes.
Carbide Derived Carbon (CDC) as novel adsorbent for ibuprofen removal from synthetic water and treated sewage effluent
Authors: Almanassra Ismail W. , Kochkodan Viktor , Ponnusamy Guhankumar , Mckay Gordon , Ali Atieh Muataz , Al-Ansari Tareq 
Published: October 2020

Abstract
Purpose
Pharmaceuticals are becoming one of the largest environmental concerns when it comes to the water treatment industry. Increased usage of these chemicals poses a serious risk to ecology and human health due to their leakage into surface waters. In the present study, carbide derived carbon (CDC) was used for the first time as a new adsorbent to remove ibuprofen from synthetic water and wastewater effluent.

Methods
The morphology, chemical composition, surface area and surface charge of the CDC particles were investigated using the transmission electron microscopy, scanning electron microscopy, energy dispersive spectroscopy, Fourier transform infrared spectroscopy, BET analysis and zeta potential measurements. The effects of CDC dosage, temperature, initial pH and agitation speed on the adsorption process were examined by using batch adsorption experiments. Moreover, the adsorption kinetics, thermodynamics, and isotherms were investigated.

Results
Adsorption and kinetic equilibrium data demonstrate that the adsorption of ibuprofen onto the CDC obeys the Langmuir isotherm model and the kinetics follow the pseudo-2nd order mechanism. The thermodynamic results reveal that ibuprofen adsorption is endothermic and spontaneous. The ibuprofen removal by CDC was mainly controlled by the electrostatic forces at high pH of the feed solution and by the dispersive interactions in acidic media. The ibuprofen removal is promoted at high temperature, high agitation speed and low pH. The highest adsorption capacity of ibuprofen onto the CDC was 367 mg/g at pH 3. Furthermore, the CDC efficiently removed ibuprofen from spiked treated sewage effluent.

Conclusions
The obtained data indicate that the CDC provides a fast and efficient adsorptive removal of ibuprofen both from a model aqueous solution and treated sewage effluent.
Diffusion tensor imaging of the roots of the brachial plexus: a systematic review and meta-analysis of normative values
Authors: Wade Ryckie G. , Whittam Alexander , Teh Irvin , Andersson Gustav , Yeh Fang-Cheng , Wiberg Mikael , Bourke Grainne 
Published: October 2020

Abstract
Purpose
Diffusion tensor magnetic resonance imaging (DTI) characterises tissue microstructure and provides proxy measures of myelination, axon diameter, fibre density and organisation. This may be valuable in the assessment of the roots of the brachial plexus in health and disease. Therefore, there is a need to define the normal DTI values.

Methods
The literature was systematically searched for studies of asymptomatic adults who underwent DTI of the brachial plexus. Participant characteristics, scanning protocols, and measurements of the fractional anisotropy (FA) and mean diffusivity (MD) of each spinal root were extracted by two independent review authors. Generalised linear modelling was used to estimate the effect of experimental conditions on the FA and MD. Meta-analysis of root-level estimates was performed using Cohen’s method with random effects.

Results
Nine articles, describing 316 adults (1:1 male:female) of mean age 35 years (SD 6) were included. Increments of ten diffusion sensitising gradient directions reduced the mean FA by 0.01 (95% CI 0.01, 0.03). Each year of life reduced the mean MD by 0.03 × 10–3 mm2/s (95% CI 0.01, 0.04). At 3-T, the pooled mean FA of the roots was 0.36 (95% CI 0.34, 0.38; I2 98%). The pooled mean MD of the roots was 1.51 × 10–3 mm2/s (95% CI 1.45, 1.56; I2 99%).

Conclusions
The FA and MD of the roots of the brachial plexus vary according to experimental conditions and participant factors. We provide summary estimates of the normative values in different conditions which may be valuable to researchers and clinicians alike.
SPH modelling of hydrodynamic lubrication: laminar fluid flow–structure interaction with no-slip conditions for slider bearings
Authors: Paggi Marco , Amicarelli Andrea , Lenarda Pietro 
Published: October 2020

AbstractThe FOSS CFD-SPH code SPHERA v.9.0.0 (RSE SpA) is improved to deal with “fluid–solid body” interactions under no-slip conditions and laminar regimes for the simulation of hydrodynamic lubrication. The code is herein validated in relation to a uniform slider bearing (i.e. for a constant lubricant film depth) and a linear slider bearing (i.e. for a film depth with a linear profile variation along the main flow direction). Validations refer to comparisons with analytical solutions, herein generalized to consider any Dirichlet boundary condition. Further, this study allows a first code validation of the “fluid–fixed frontier” interactions under no-slip conditions. With respect to the most state-of-the-art models (2D codes based on Reynolds’ equation for fluid films), the following distinctive features are highlighted: (1) 3D formulation on all the terms of the Navier–Stokes equations for incompressible fluids with uniform viscosity; (2) validations on both local and global quantities (pressure and velocity profiles; load-bearing capacity); (3) possibility to simulate any 3D topology. This study also shows the advantages of using a CFD-SPH code in simulating the inertia and 3D effects close to the slider edges, and it opens new research directions overcoming the limitations of the codes for hydrodynamic lubrication based on the Reynolds’ equation for fluid films. This study finally allows SPHERA to deal with hydrodynamic lubrication and improves the code for other relevant application fields involving fluid–structure interactions (e.g. transport of solid bodies by floods and earth landslides; rock landslides). SPHERA is developed and distributed on a GitHub public repository.
Religious Leaders in Politics: Rio de Janeiro Under the Mayor-Bishop in the Times of the Pandemic
Authors: Siuda-Ambroziak Renata , Bahia Joana 
Published: October 2020

AbstractThe authors discuss the phenomenon of religious and political leadership focusing on Bishop Marcelo Crivella from the Universal Church of the Kingdom of God (IURD), the current mayor of the city of Rio de Janeiro, in the context of the political involvement of his religious institution and the beginnings of the COVID-19 pandemic. In the article, selected concepts of leadership are applied in the background of the theories of a religious field, existential security, and the market theory of religion, to analyze the case of the IURD leadership political involvement and bishop/mayor Crivella’s city management before and during the pandemic, in order to show how his office constitutes an important part of the strategies of growth implemented by the IURD charismatic leader Edir Macedo, the founder and the head of this religious institution and, at the same time, Crivella’s uncle. The authors prove how Crivella’s policies mingle the religious and the political according to Macedo’s political alliances at the federal level, in order to strengthen the church and assure its political influence.
New Triassic Aviculopectinoidea (Bivalvia), with notes on the taxonomic concept of the superfamily
Authors: Hautmann Michael , Friesenbichler Evelyn , Grădinaru Eugen , Jattiot Romain , Bucher Hugo 
Published: October 2020

AbstractWe describe two new genera of Triassic Aviculopectinoidea: Cristaflabellum n. gen., which is biconvex and has a strongly plicate shell, and Globodiscus n. gen., which is equiconvex and externally smooth or nearly so. Globodiscus contains the new species G. kiliani n. gen. n. sp. and G. vinzenti n. gen. n. sp. In order to make the taxonomic concept of the superfamily Aviculopectinoidea more consistent with that of its sister group Pectinoidea (scallops), we use tribes rather than families or subfamilies for accommodating the new taxa. Cristaflabellum is placed in the tribe Antijanirini (previously family Antijaniridae), whereas Globodiscus is made the type genus of the new tribe Globodiscini. Both tribes are placed within the family Aviculopectinidae, which is revised to include both equiconvex and inequiconvex taxa. We suggest that tribes are a more appropriate taxonomic rank for many of the previously erected species-poor families and subfamilies of Aviculopectinoidea.UUID: http://zoobank.org/d143663a-9016-459f-8e24-660102adcf6a
Realigning the provider payment system for primary health care: a pilot study in a rural county of Zhejiang Province, China
Authors: Pu Xiaoying , Huang Ting , Wang Xiaohe , Gu Yaming 
Published: October 2020

Abstract

Aim:
This work aimed to evaluate a pre/post-reform pilot study from 2015 to 2018 in a rural county of Zhejiang Province, China to realign the provider payment system for primary health care (PHC).

Methods:
Data were extracted from the National Health Financial Annual Reports for the 21 township health centers (THCs) in Shengzhou County. An information system was designed for the reform. Differences among independent groups were assessed using Kruskal–Wallis H-test. Dunn’s post hoc test was used for multiple comparisons. Differences between paired groups were tested by Wilcoxon signed-rank test. Two-tailed P < 0.05 indicated statistical significance. Data were processed and analyzed using R 3.6.1 for Windows.

Findings:
First, payments to THCs shifted from a “soft budget” to a mixed system of line-item input-based and categorized output-based payments, accounting for 17.54% and 82.46%, respectively, of total revenue in 2017. Second, providers were more motivated to deliver services after the reform; total volumes increased by 27.80%, 19.22%, and 30.31% for inpatient visits, outpatient visits, and the National Essential Public Health Services Package (NEPHSP), respectively. Third, NEPHSP payments were shifted from capitation to resource-based relative value scale (RBRVS) payments, resulting in a change in the NEPHSP subsidy from 36.41 to 67.35 per capita among the 21 THCs in 2017. Fourth, incentive merit pay to primary health physicians accounted for 38.40% of total salary, and the average salary increased by 32.74%, with a 32.45% increase in working intensity. A small proportion of penalties for unqualified products and pay-for-performance rewards were blended with the payments. The reform should be modified to motivate providers in remote areas.

Conclusion:
In the context of a profit-driven, hospital-centered system, add-on payments – including categorized output-based payments to THCs and incentive merit pay to primary care physicians (PCPs) – are probably worth pursuing to achieve more active and output/outcome-based PHC in China.
The real time evolution of post-AGB stars
Authors: Hajduk Marcin 
Published: October 2020

AbstractEvolution of post-AGB stars is extremely fast. They cross the HR diagram vertically on a timescale of hundreds to some ten thousands of years to reach maximum temperature in their lifetime. This is reflected in an increasing excitation of planetary nebulae on a timescale of years and decades. Since evolutionary timescale of post-AGB stars is very sensitive to their mass, observed changes can be used to determine model dependent central star masses. If an additional parameter is determined (e.g. luminosity or dynamic age), the observed evolution of planetary nebulae can be utilized for observational verification of theoretical models.