bluuebunny/crossref_metadata_2025_split huggingface dataset:
Potential net primary production footprint of agriculture: A global trade analysis
Authors: Weinzettel Jan , Vačkářů Dava , Medková Helena 
Published: April 2019

AbstractAgriculture is one of the most important sources of biomass for human society but increasingly contributes to anthropogenic degradation of ecosystems through negative impacts on biodiversity, ecosystem integrity, climate change, and ecosystem services. Here we estimate NPPpot agricultural footprint, that is, the level of appropriation of potential net primary production (NPPpot) by global cropland and human‐made pastures from the consumer responsibility (footprint) perspective and reveal the role of international trade. To quantify the NPPpot agricultural footprint, we utilize environmentally extended multi‐regional input–output analysis to attribute the terrestrial potential NPP altered by global cropland and human‐made pastures to the final consumers responsible for pulling the supply chains. We identify the NPPpot of geographically specific cropland area of 186 agricultural crops in 236 countries and we track each of those crops through the global web of international trade and supply chains to the point of final consumption. We show that human society appropriates 20% (13 petagrams of carbon per year) of global potential net primary production by the transformation of natural ecosystems into cropland and human‐made pastures. International trade accounts for 23% of global NPPpot footprint of agriculture. While the two and half billion people living in China and India (the two countries with lowest NPPpot agricultural footprint per capita) appropriate about 16% of the global NPPpot agricultural footprint of cropland and human‐made pastures, the same share is appropriated by only 360 million people living in countries with the highest per capita footprint.
Does synaesthesia protect against age‐related memory loss?
Authors: Mealor Andy D. , Simner Julia , Ward Jamie 
Published: March 2019

Synaesthesia is known to be linked to enhanced episodic memory abilities, across a variety of stimuli and tests, but the evidence has tended to come from younger adults. This enhanced cognitive ability in early adult life, together with the known brain‐related differences linked to synaesthesia (e.g., in both grey and white matter structure), makes it an ideal candidate for exploring the notion of ‘reserve’. That is, synaesthetes may be able to utilize additional cognitive and/or neural resources to mitigate against the effects of age‐related decline. This was explored in a 2 × 2 design contrasting age (young, old) against the presence/absence of synaesthesia in two different studies: recognition memory for digits, snowflakes, and music; and visual associative learning. Synaesthesia and age had independent, non‐interacting, effects on memory ability suggesting that, while synaesthetes show a memory advantage and maintain this advantage in later life, the presence of synaesthesia is not able to act as a reserve to protect against the effects of ageing. On our tasks, the benefit of having synaesthesia (enhancing memory) was of a similar magnitude to the effects of age (impairing memory); in other words, elderly synaesthetes present with ‘youthful’ memory abilities. It is important for future research on elderly cohorts to consider the presence of synaesthesia as an individual difference.
Calcineurin‐dependent dephosphorylation of the transcription factor CrzA at specific sites controls conidiation, stress tolerance, and virulence of Aspergillus fumigatus
Authors: Shwab E. Keats , Juvvadi Praveen R. , Waitt Greg , Soderblom Erik J. , Barrington Blake C. , Asfaw Yohannes G. , Moseley M. Arthur , Steinbach William J. 
Published: March 2019

SummaryCalcium signaling through calcineurin and its major transcription factor (TF), CrzA, is integral to hyphal growth, stress response and virulence of the pathogenic fungus Aspergillus fumigatus, the leading etiology of invasive aspergillosis. Dephosphorylation of CrzA by calcineurin activates the TF, but the specific phosphorylation sites and their roles in the activation/inactivation mechanism are unknown. Mass spectroscopic analysis identified 20 phosphorylation sites, the majority of which were specific to filamentous fungi and distributed throughout the CrzA protein, with particular concentration in a serine‐rich region N‐terminal to the conserved DNA‐binding domain (DBD). Site‐directed mutagenesis of phosphorylated residues revealed that CrzA activity during calcium stimulation can only be suppressed by a high degree of phosphorylation in multiple regions of the protein. Our findings further suggest that this regulation is not solely accomplished through control of CrzA nuclear import. Additionally, we demonstrate the importance of the CrzA phosphorylation state in regulating growth, conidiation, calcium and cell wall stress tolerance, and virulence. Finally, we identify two previously undescribed nuclear localization sequences in the DBD. These findings provide novel insight into the phosphoregulation of CrzA which may be exploited to selectively target A. fumigatus.
Net photosynthetic CO2 assimilation: more than just CO2 and O2 reduction cycles
Authors: Tcherkez Guillaume , Limami Anis M. 
Published: March 2019

SummaryNet photosynthetic assimilation in C3 plants is mostly viewed as a simple balance between CO2 fixation by Rubisco‐catalyzed carboxylation and CO2 production by photorespiration (and to a lower extent, by day respiration) that can be easily manipulated during gas exchange experiments using the CO2 : O2 ratio of the environment. However, it now becomes clear that it is not so simple, because the photosynthetic response to gaseous conditions involves ‘ancillary’ metabolisms, even in the short‐term. That is, carbon and nitrogen utilization by pathways other than the Calvin cycle and the photorespiratory cycle, as well as rapid signaling events, can influence the observed rate of net photosynthesis. The potential impact of such ancillary metabolisms is assessed as well as how it must be taken into account to avoid misinterpretation of photosynthetic CO2 response curves or low O2 effects in C3 leaves.
Induction and inhibition of oral malodor
Authors: Suzuki Nao , Yoneda Masahiro , Takeshita Toru , Hirofuji Takao , Hanioka Takashi 
Published: March 2019

AbstractVolatile sulfur compounds (VSCs) such as hydrogen sulfide (H2S) and methyl mercaptan (CH3SH) are the main components of oral malodor, and are produced as the end products of the proteolytic processes of oral microorganisms. The main pathway of proteolysis is the metabolism of sulfur‐containing amino acids by gram‐negative anaerobic bacteria. Gram‐positive bacteria may promote VSC production by gram‐negative anaerobes by cleaving sugar chains from glycoproteins and thus providing proteins. A large variety of bacteria within the oral microbiota are thought to be involved in the complex phenomenon of halitosis. Oral microbiota associated with a lack of oral malodor, oral microbiota associated with severe and H2S‐dominant oral malodor, and oral microbiota associated with severe and CH3SH‐dominant oral malodor have been distinguished through molecular approaches using the 16S rRNA gene. Pathological halitosis may primarily be addressed through treatment of causative diseases. In all cases, plaque control is the basis of oral malodor control, and dentifrices, mouthwashes, and functional foods play a supplementary role in addition to brushing. Recently, the use of natural ingredients in products tends to be favored due to the increase in antibiotic‐resistant strains and the side effects of some chemical ingredients. In addition, probiotics and vaccines are expected to offer new strategies for improving the oral conditions through mechanisms other than antibacterial agents.
Three-Dimensional Thermo-Elasto-Hydrodynamic Computational Fluid Dynamics Model of a Tilting Pad Journal Bearing—Part I: Static Response
Authors: Yang Jongin , Palazzolo Alan 
Published: March 2019

Abstract
This paper presents the first simulation model of a tilting pad journal bearing (TPJB) using three-dimensional (3D) computational fluid dynamics (CFD), including multiphase flow, thermal-fluid, transitional turbulence, and thermal deformation of the shaft and pads employing two-way fluid–structure interaction (FSI). Part I presents a modeling method for the static performance. The model includes flow between pads BP, which eliminates the use of an uncertain, mixing coefficient (MC) in Reynold's equation approaches. The CFD model is benchmarked with Reynold's model with a 3D thermal-film, when the CFD model boundary conditions are consistent with the Reynolds boundary conditions. The Reynolds model employs an oversimplified MC representation of the three-dimensional mixing effect of the BP flow and heat transfer, and it also employs simplifying assumptions for the flow and heat transfer within the thin film between the journal and bearing. This manufactured comparison shows good agreement between the CFD and Reynold's equation models. The CFD model is generalized by removing these fictitious boundary conditions on pad inlets and outlets and instead models the flow and temperature between pads. The results show that Reynold's model MC approach can lead to significant differences with the CFD model including detailed flow and thermal modeling between pads. Thus, the CFD approach provides increased reliability of predictions. The paper provides an instructive methodology including detailed steps for properly applying CFD to tilt pad bearing modeling. Parts I and II focus on predicting static and dynamic response characteristic responses, respectively.
On the Nonlinear Energy Interactions in Harmonically Excited Post-Buckled Flexible Inverted Pendulum in the Presence of Friction
Authors: Vyas Vishal , Gandhi Prasanna 
Published: March 2019

Abstract
Nonlinear energy interaction is a fascinating feature of nonlinear oscillators and has been drawing the attention of researchers since the last few decades. Omnipresent friction in mechanical systems can play a crucial role in modifying these interactions. Using post-buckled flexible inverted pendulum as a candidate system we characterize here, theoretically and experimentally, significant changes in the nonlinear energy transfer in the presence of friction at the input side. Particularly, even with relatively low friction, the energy gets transferred in the higher harmonics of excitation close to a resonant mode as against the transfer to higher modes reported previously. We term this new phenomenon as “excitation harmonic resonance locking.” Theoretical modeling and simulations, considering large deformations, based on assumed modes method, and using a simple friction model reasonably capture the experimental observation. In summary, the paper explicates the role of friction in shifting energy transfer frequencies and can be useful in understanding and designing of oscillators and nonlinear vibrating systems.
Impact of bacterial probiotics on obesity, diabetes and non-alcoholic fatty liver disease related variables: a systematic review and meta-analysis of randomised controlled trials
Authors: Koutnikova Hana , Genser Bernd , Monteiro-Sepulveda Milena , Faurie Jean-Michel , Rizkalla Salwa , Schrezenmeir Jürgen , Clément Karine 
Published: March 2019

ObjectiveTo systematically review the effect of oral intake of bacterial probiotics on 15 variables related to obesity, diabetes and non-alcoholic fatty liver disease.DesignSystematic review and meta-analysis.Data sourcesMedline, EMBASE and COCHRANE from 1990 to June 2018.Eligibility criteriaRandomised controlled trials (≥14 days) excluding hypercholesterolaemia, alcoholic liver disease, polycystic ovary syndrome and children <3 years.ResultsOne hundred and five articles met inclusion criteria, representing 6826 subjects. In overweight but not obese subjects, probiotics induced improvements in: body weight (k=25 trials, d=−0.94 kg mean difference, 95% CI −1.17 to −0.70, I²=0.0%), body mass index (k=32, d=−0.55 kg/m², 95% CI −0.86 to −0.23, I²=91.9%), waist circumference (k=13, d=−1.31 cm, 95% CI −1.79 to −0.83, I²=14.5%), body fat mass (k=11, d=−0.96 kg, 95% CI −1.21 to −0.71, I²=0.0%) and visceral adipose tissue mass (k=5, d=−6.30 cm², 95% CI −9.05 to −3.56, I²=0.0%). In type 2 diabetics, probiotics reduced fasting glucose (k=19, d=−0.66 mmol/L, 95% CI −1.00 to −0.31, I²=27.7%), glycated haemoglobin (k=13, d=−0.28 pp, 95% CI −0.46 to −0.11, I²=54.1%), insulin (k=13, d=−1.66 mU/L, 95% CI −2.70 to −0.61, I²=37.8%) and homeostatic model of insulin resistance (k=10, d=−1.05 pp, 95% CI −1.48 to −0.61, I²=18.2%). In subjects with fatty liver diseases, probiotics reduced alanine (k=12, d=−10.2 U/L, 95% CI −14.3 to −6.0, I²=93.50%) and aspartate aminotransferases (k=10, d=−9.9 U/L, 95% CI −14.1 to -5.8, I²=96.1%). These improvements were mostly observed with bifidobacteria (Bifidobacterium breve,B. longum),Streptococcus salivariussubsp. thermophilusand lactobacilli (Lactobacillus acidophilus,L. casei,L. delbrueckii) containing mixtures and influenced by trials conducted in one country.ConclusionsThe intake of probiotics resulted in minor but consistent improvements in several metabolic risk factors in subjects with metabolic diseases.Trial registration numberCRD42016033273.
First incidence, age of onset outcomes and risk factors of onset of DSM-5 oppositional defiant disorder: a cohort study of Spanish children from ages 3 to 9
Authors: Ezpeleta Lourdes , Navarro J Blas , de la Osa Nuria , Penelo Eva , Domènech Josep Maria 
Published: March 2019

ObjectiveTo examine the 1-year first incidence and prevalence of oppositional defiant disorder (ODD), the outcomes on psychopathology and functioning by age of onset and the risk factors of onset of ODD from ages 3 to 9 in children from the Spanish general population.DesignLongitudinal with seven follow-ups and double cohort (ODD and non-ODD children).SettingGeneral population of preschool and elementary school children in Barcelona (Spain).ParticipantsOn a first phase, the parent-rated Strengths and Difficulties Questionnaire conduct problems scale plus ODD Diagnostic and Statistical Manual of Mental Disorders, fourth version, symptoms were used to screen for behavioural problems. The second phase sample size contained 622 cases at age 3 and, at age 9, 418 remained in the study.ResultsThe probability of the onset of ODD showed increasing values at ages 4 (R=2.7%) and 5 years (R=4.4%). These values decreased until age 7 (R=1.9%) and increased again until age 9 (R=3.6%). Up to 9 years old, the cumulative risk of new cases of ODD was 21.9%. Early onset was associated with a higher risk of depression comorbidity and later onset with higher functional impairment and symptomatology. Subthreshold ODD, high scores in irritability and headstrong dimensions, attention deficit/hyperactivity disorder and other comorbidity, negative affectivity until age 7, difficulties in inhibit and emotional control, punitive parenting and maternal internalising problems were risk factors of a first episode of ODD during this 7-year period.ConclusionsThe risk of new cases of ODD in the general population at preschool age and during childhood is high. Preschool age is a target period for preventive interventions. Identified risk factors are objectives for targeted and indicated interventions.
Hypothyroidism and related diseases: a methodological quality assessment of meta-analysis
Authors: Tian Limin , Shao Feifei , Qin Yahong , Guo Qian , Gao Cuixia 
Published: March 2019

ObjectivesThere is an increasing prevalence of hypothyroidism and there is a growing body of meta-analyses (MAs) on the association between hypothyroidism and other diseases. However, the methodological quality of the MAs significantly varies. Thus, this study aimed to evaluate and summarise data on the methodological quality of MAs on the associations between hypothyroidism and other diseases using the Assessment of Multiple Systematic Reviews (AMSTAR) scale, providing suggestions for clinical decision-making processes.DesignTo assess the methodological quality of MAs using the AMSTAR scale.Data sourcesA systematic literature search was performed in PubMed, EMBASE, the Cochrane Library, web of science and Chinese Biomedicine Literature Database.Eligibility criteriaWe included MAs that had assessed the association between hypothyroidism and other diseases in humans and that had full texts regardless of the publication status. No restriction applied on language or date.Data extraction and synthesisTwo reviewers independently screened the titles and abstracts of all searched literature to acquire potentially eligible publications. The full texts of possible eligible publications were downloaded and assessed. Inconsistent comments were resolved through discussions with a third reviewer.Results52 studies were included. The average AMSTAR score of the included articles was 8.6 (range: 5–10), and those of English and Chinese MAs were 8.8 and 7.0, respectively. A total of 52 MAs were evaluated, and 19 (36.5%) and 33 (63.5%) of these MAs were of moderate and high quality, respectively. None of the MAs were of low quality. Only two MAs had an a priori design. Items 3, 5 and 9 had the highest compliance (50/52, 96.2%), and aside from item 1, items 7 and 8 had the lowest compliance (33/52,63.5%). According to the results of these MAs, hypothyroidism was significantly associated with cardiovascular diseases, metabolic diseases, neuropsychiatric disorders, breast cancer and pregnancy outcome.ConclusionsThe methodological quality of the included MAs on the association between hypothyroidism and other diseases was moderate to high. MAs with high qualities confirmed that hypothyroidism was significantly associated with cardiovascular diseases, metabolic syndrome, preterm birth and neonatal outcomes. Consideration of scientific quality when formulating conclusions should be made explicit and more attention should be paid to improving the methodological quality of MAs, and increasing their applicability for clinical decision-making.
Complex challenges for patients with protracted incurable cancer: an ethnographic study in a comprehensive cancer centre in the Netherlands
Authors: Buiting Hilde M , van Ark Marleen A C , Dethmers Otto , Maats Emma P E , Stoker Jogien A , Sonke Gabe S 
Published: March 2019

ObjectiveAdvances in oncology increasingly result in protracted disease trajectories for patients with incurable cancer. In this disease phase, patients are aware of the incurable nature of cancer although they are not yet approaching the last phase of life. We explored the challenges for patients confronted with protracted incurable cancer.DesignEthnographic study (2015–2017) based on conversations with patients, observations at a day-care unit and a selection of information from the medical records of patients who died during the study period.SettingThe day-care unit of a comprehensive cancer centre in the Netherlands.ParticipantsNineteen patients with stage IV breast cancer (in remission, >1 year after diagnosis) and 11 patients with stage IV lung-cancer (in remission, >6 months after diagnosis).ResultsIn patients who had died during the study period, the treatment response often fluctuated between stable, remission and progression throughout the course of the disease. Patients reported that this fluctuation could be overwhelming. However, as patients grew accustomed to having protracted incurable cancer, the distress associated with fluctuations (perceived in scan results) slowly faded. Patients reported that cancer became part of who they were. At the day-care unit, most patients talked about their disease in an optimistic or neutral way and expressed delight in life. They often expressed gratefulness for the possible prolongation of life, expressed hope and tried to stay optimistic. This was frequently reinforced by optimistic doctors and nurses. Relatives, however, could downplay such optimism. Moreover, some patients acknowledged that hope was qualified by their personal challenges regarding their disease.ConclusionsIn situations where tumours remained in remission or were stable for extended periods, patients grew accustomed to having cancer. At the day-care unit, medical professionals typically encouraged an attitude of being hopeful and optimistic, which could be downplayed by relatives. More research is warranted to explore this protracted disease phase and this optimistic view among healthcare professionals.
Changing contribution of area-level deprivation to total variance in age at death: a population-based decomposition analysis
Authors: Seaman Rosie , Riffe Tim , Caswell Hal 
Published: March 2019

ObjectivesTwo processes generate total variance in age at death: heterogeneity (between-group variance) and individual stochasticity (within-group variance). Limited research has evaluated how these two components have changed over time. We quantify the degree to which area-level deprivation contributed to total variance in age at death in Scotland between 1981 and 2011.DesignFull population and mortality data for Scotland were obtained and matched with the Carstairs score, a standardised z-score calculated for each part-postcode sector that measures relative area-level deprivation. A z-score above zero indicates that the part-postcode sector experienced higher deprivation than the national average. A z-score below zero indicates lower deprivation. From the aggregated data we constructed 40 lifetables, one for each deprivation quintile in 1981, 1991, 2001 and 2011 stratified by sex.Primary outcome measuresTotal variance in age at death and the proportion explained by area-level deprivation heterogeneity (between-group variance).ResultsThe most deprived areas experienced stagnating or slightly increasing variance in age at death. The least deprived areas experienced decreasing variance. For males, the most deprived quintile life expectancy was between 7% and 11% lower and the SD is between 6% and 25% higher than the least deprived. This suggests that the effect of deprivation on the SD of longevity is comparable to its effect on life expectancy. Decomposition analysis revealed that contributions from between-group variance doubled between 1981 and 2011 but at most only explained 4% of total variance.ConclusionsThis study adds to the emerging body of literature demonstrating that socio-economic groups have experienced diverging trends in variance in age at death. The contribution from area-level deprivation to total variance in age at death, which we were able to capture, has doubled since 1981. Area-level deprivation may play an increasingly important role in mortality inequalities.