bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of long‐term contrasting lime and phosphorus applications on barley grain yield, root growth and abundance of mycorrhiza
Authors: Christensen Julie Therese , Azeez Musibau Oyeleke , Labouriau Rodrigo , Ravnskov Sabine , Kristensen Hanne Lakkenborg , Munkholm Lars Juhl , Rubæk Gitte Holton 
Published: August 2021

SummaryLime and phosphorus (P) applications are common agricultural management practices. Our aim was to quantify the effects of long‐term application practices on root growth and abundance of arbuscular mycorrhizal fungi (AMF) under field conditions. We assessed the effects of lime and P fertilizer applications on barley yield, root growth and AMF abundance in 2016. Treatments were no, low, medium and high liming rate corresponding to application of 0, 4, 8 and 12 Mg lime ha−1 every 5–9 years since 1942 combined with no or yearly application of 15.6 kg P ha−1 since 1944. At harvest, grain yield, root intensity (core‐break) and AMF abundance at different soil depths were estimated. Root development was monitored during early growth with minirhizotrons in treatments receiving low, medium and high liming rates and P fertilization. A quadratic model relating grain yield to liming rate estimated yields to peak at 6.4 Mg lime ha−1 with yields of 4.2 and 3.2 Mg grain ha−1 with and without P fertilization, respectively. Low and medium liming rates resulted in greater AMF abundance, especially in the no P treatments. During early growth in P‐fertilized treatments, 77% and 65% more roots developed in the soil profile when treated with medium and high liming rate, respectively, compared to low liming rate. We conclude that long‐term application of lime in soils receiving yearly P fertilization improved conditions for root growth in soil layers below 30 cm, but at the high liming rate, this did not translate into higher yield.
Collision‐related porphyry Cu deposits formed by input of ultrapotassic melts into the sulfide‐rich lower crust
Authors: Zheng Yuan‐Chuan , Shen Yang , Wang Lu , Griffin William L. , Hou Zeng‐Qian 
Published: August 2021

AbstractCollision‐related porphyry Cu deposits (PCDs) are restricted to previous magmatic arcs, in which sulfide‐rich lower crust occurred. Fertile adakite‐like porphyries associated with PCDs have higher K2O contents and K2O/Na2O ratios than barren porphyries emplaced in the same arc. The elevated K2O/Na2O ratios of fertile porphyries reflect substantial inputs of coeval hydrous, oxidized ultrapotassic melts. Input of such melts could increase the water content and oxygen fugacity of the lower‐crust‐derived melts, which in turn would promote the breakdown of sulphides in the lower crust and increase the contents of Cu and S in the melts, making them favourable for the formation of large PCDs. The relatively low K2O contents and K2O/Na2O ratios of barren porphyries indicate limited input of ultrapotassic melts; these magmas have low potential to form PCDs. Thus, the input of ultrapotassic melts into the sulfide‐rich juvenile lower crust drives the formation of collision‐related PCDs.
Preliminary Design of Hybrid-Electric Propulsion Systems for Emerging Urban Air Mobility Rotorcraft Architectures
Authors: Saias Chana Anna , Goulos Ioannis , Roumeliotis Ioannis , Pachidis Vassilios , Bacic Marko 
Published: August 2021

Abstract
The increasing demands for air-taxi operations together with the ambitious targets for reduced environmental impact have driven significant interest in alternative rotorcraft architectures and propulsion systems. The design of hybrid-electric propulsion systems (HEPSs) for rotorcraft is seen as being able to contribute to those goals. This work aims to conduct a comprehensive design and tradeoff analysis of hybrid powerplants for rotorcraft, targeting enhanced payload-range capability and fuel economy. An integrated methodology for the design, performance assessment, and optimal implementation of HEPSs for conceptual rotorcraft has been developed. A multidisciplinary approach is devised comprising models for rotor aerodynamics, flight dynamics, HEPS performance, and weight estimation. All models are validated using experimental or flight test data. The methodology is deployed for the assessment of a hybrid-electric tilt-rotor, modeled after the NASA XV-15. This work targets to provide new insight into the preliminary design and sizing of optimally designed HEPSs for novel tilt-rotor aircraft. The paper demonstrates that at present, current battery energy densities (250 Wh/kg) severely limit the degree of hybridization if a fixed useful payload and range are to be achieved. However, it is also shown that if advancements in battery energy density to 500 Wh/kg are realized, a significant increase in the level of hybridization and hence reduction of fuel burned and carbon output relative to the conventional configuration can be attained. The methodology presented is flexible enough to be applied to alternative rotorcraft configurations and propulsion systems.
Exploring managers’ response to a quality and safety leadership intervention: findings from a multiple case study in Norwegian nursing homes and homecare services
Authors: Johannessen Terese , Ree Eline , Aase Ingunn , Bal Roland , Wiig Siri 
Published: August 2021

BackgroundImprovement interventions would be easier to treat if they were stable and uninfluenced by their environment, but in practice, contextual factors may create difficulties in implementing and sustaining changes. Managers of healthcare organisations play an important role in quality and safety improvement. We need more research in the nursing home and homecare settings to support managers in their quality and safety improvement work. The aim of this study was to explore managers’ response to a leadership intervention on quality and safety improvement.MethodsThis study reports findings from the SAFE-LEAD intervention undertaken from April 2018 to March 2019. The research design was a multiple case study of two nursing homes and two homecare services in four municipalities in Norway. We used a combination of qualitative methods including interviews, workshops, observations, site visits and document analysis in our data collection that took place over a 1-year period.ResultsManagement continuity was key for the implementation process of the quality and safety leadership intervention. In the units where stable management teams were in place, the intervention was more rooted in the units, and changes in quality and safety practice occurred. The intervention served as an arena for managers to work with quality and safety improvement. We found that the workshops and use of the leadership guide contributed to a common understanding and commitment to quality and safety improvement among the managers.ConclusionsThis is a longitudinal study of managers’ response to a leadership intervention targeted to improve quality and safety work in nursing home and homecare settings. Our research demonstrates how the mechanisms of stable management and established structures are crucial for quality and safety improvement activities. Management continuity is key for participating in interventions and for using the leadership guide in quality and safety work.
Simple screening model for identifying the risk of sleep apnea in patients on opioids for chronic pain
Authors: Selvanathan Janannii , Waseem Rida , Peng Philip , Wong Jean , Ryan Clodagh M , Chung Frances 
Published: August 2021

BackgroundThere is an increased risk of sleep apnea in patients using opioids for chronic pain. We hypothesized that a simple model comprizing of: (1) STOP-Bang questionnaire and resting daytime oxyhemoglobin saturation (SpO2); and (2) overnight oximetry will identify those at risk of moderate-to-severe sleep apnea in patients with chronic pain.MethodAdults on opioids for chronic pain were recruited from pain clinics. Participants completed the STOP-Bang questionnaire, resting daytime SpO2, and in-laboratory polysomnography. Overnight oximetry was performed at home to derive the Oxygen Desaturation Index. A STOP-Bang score ≥3 or resting daytime SpO2 ≤95% were used as thresholds for the first step, and for those identified at risk, overnight oximetry was used for further screening. The Oxygen Desaturation Index from overnight oximetry was validated against the Apnea-Hypopnea Index (≥15 events/hour) from polysomnography.ResultsOf 199 participants (52.5±12.8 years, 58% women), 159 (79.9%) had a STOP-Bang score ≥3 or resting SpO2 ≤95% and entered the second step (overnight oximetry). Using an Oxygen Desaturation Index ≥5 events/hour, the model had a sensitivity of 86.4% and specificity of 52% for identifying moderate-to-severe sleep apnea. The number of participants who would require diagnostic sleep studies was decreased by 38% from Step 1 to Step 2 of the model.ConclusionA simple model using STOP-Bang questionnaire and resting daytime SpO2, followed by overnight oximetry, can identify those at high risk of moderate-to-severe sleep apnea in patients using opioids for chronic pain.Trial registration numberNCT02513836.
Winter nest trees of sympatric northern (Glaucomys sabrinus) and southern (Glaucomys volans) flying squirrels: a test of reinforcement in a hybrid zone
Authors: O’Brien Paul P. , Bowman Jeff , Coombs Andrea B. , Newar Sasha L. , Garroway Colin J. 
Published: August 2021

Shifting range boundaries can lead to secondary contact of closely related species, which might in turn lead to hybridization when the evolution of reproductive isolation is incomplete. We examined winter nest use of northern (Glaucomys sabrinus (Shaw, 1801)) and southern (Glaucomys volans (Linnaeus, 1758)) flying squirrels in an area of recent secondary contact and known hybridization in Ontario, Canada, to test for evidence of reinforcement due to different and diverging nesting behaviours. We radio-collared 26 flying squirrels (12 G. sabrinus and 14 G. volans) between two survey periods (winters of 2008–2009 and 2019–2020) and identified all nest trees used by individuals throughout each winter. For each nest tree, we identified the nest type and collected tree classification information to compare differences in nest use between species. We also present a novel application of habitat suitability modelling to test for evidence of divergence in nest use through time, which would suggest reinforcement. We found southern flying squirrels used a higher proportion of cavities in large, hardwood trees, whereas northern flying squirrels used more external nests and softwood trees. Conditional probabilities provided some evidence for increased differentiation in nest use by flying squirrels through time. Overall, we found relatively little overlap in winter nest use between flying squirrel species, despite evidence for hybridization at this site, and some weak evidence for increased divergence between species in nest use over 11 years.
A Taxonomic Revision of the Genus Poeppigia (Fabaceae: Dialioideae)
Authors: FALCÃO MARCUS JOSÉ DE AZEVEDO , MANSANO VIDAL DE FREITAS 
Published: August 2021

Poeppigia is a Neotropical genus of legumes that occurs from Mexico and Cuba to eastern Brazil and is considered until now to be monospecific with two varieties. Being one of the 17 genera in the subfamily Dialioideae, Poeppigia stands out as one of the few genera with not reduced perianth and androecium, representing a possible link between this subfamily and the other Fabaceae. The genus was never revised since several taxa were described in the XIX century and lack of recent studies and proper typification. Here we revised the genus taxonomically with the analysis of more than 400 specimens and proposed the acceptance of two species: P. procera, distributed on tropical forests from Mexico to Amazon and Southeast Brazil and P. densiflora, endemic of Brazilian Caatinga. The two species are distinct for many characters as habitus, size of branch, leaf and fruits, number of leaflets, stipules and bracts and form of inflorescence. Seed, embryo, pollen and seedling descriptions, conservation assessments, illustrations, maps of distribution and an identification key are presented. Nomenclatural, biogeographical, and ecological comments and three new lectotypifications are made.
Living in Between: A Grounded Theory Study of Depression Among Middle-Class Black Women
Authors: Walton Quenette L. 
Published: August 2021

Empirical evidence consistently has linked the identification and treatment of depression among low-income Black women. Research on depression and Black women also suggests Black women are a monolithic group who experience depression similarly. The purpose of this qualitative study was to gain a deeper understanding of how the identity of middle-class Black women may shape their experiences with depression. Using grounded theory as the guiding method, I conducted 30 in-depth, semistructured interviews with Black women between 30 and 45 years old who self-identified as middle class. The core experience of depression among middle-class Black women was “living in between” because they straddled two worlds—one Black world and one White world—with competing sociocultural messages about depression. Two major categories emerged that informed the experiences of depression among the middle-class Black women in this study: (a) strategies to deal with depression and (b) minimization of depression. Each of these categories highlighted consequences for the women’s mental health. The women also described coping strategies for managing these experiences. Implications for research and practice are included.
The change in estimate method for selecting confounders: A simulation study
Authors: Talbot Denis , Diop Awa , Lavigne-Robichaud Mathilde , Brisson Chantal 
Published: August 2021

Background The change in estimate is a popular approach for selecting confounders in epidemiology. It is recommended in epidemiologic textbooks and articles over significance test of coefficients, but concerns have been raised concerning its validity. Few simulation studies have been conducted to investigate its performance. Methods An extensive simulation study was realized to compare different implementations of the change in estimate method. The implementations were also compared when estimating the association of body mass index with diastolic blood pressure in the PROspective Québec Study on Work and Health. Results All methods were susceptible to introduce important bias and to produce confidence intervals that included the true effect much less often than expected in at least some scenarios. Overall mixed results were obtained regarding the accuracy of estimators, as measured by the mean squared error. No implementation adequately differentiated confounders from non-confounders. In the real data analysis, none of the implementation decreased the estimated standard error. Conclusion Based on these results, it is questionable whether change in estimate methods are beneficial in general, considering their low ability to improve the precision of estimates without introducing bias and inability to yield valid confidence intervals or to identify true confounders.
Wide variability in colorectal cancer screening uptake by general practitioner: Cross-sectional study
Authors: Martellucci Cecilia Acuti , Flacco Maria E , Morettini Margherita , Giacomini Giusi , Palmer Matthew , Fraboni Stefania , Pasqualini Francesca 
Published: August 2021

Objectives Despite several interventions, colorectal cancer (CRC) screening uptake remains below acceptable levels in Italy. Among the potential determinants of screening uptake, only a few studies analysed the role of general practitioners (GPs). The aim was to evaluate the variation in screening uptake of the clusters of subjects assisted by single GPs. Setting Ancona province, Central Italy. Methods Cross-sectional study, including all residents aged 50–69 years, who were offered the public screening programme with biannual faecal immunochemical tests. Demographic (of all GPs) and screening data (of all eligible residents) for years 2018–2019 were collected from the official electronic datasets of the Ancona Local Health Unit. The potential predictors of acceptable screening uptake, including GP's gender, age, and number of registered subjects, were evaluated using random-effect logistic regression, with geographical area as the cluster unit. Results The final sample consisted of 332 GP clusters, including 120,178 eligible subjects. The overall province uptake was 38.0% ± 10.7%. The uptake was lower than 30% in one-fifth of the GP clusters, and higher than 45% in another fifth. At multivariable analysis, the significant predictors of uptake were younger GP age ( p = 0.010) and lower number of registered subjects ( p < 0.001). None of the GP clusters with 500 subjects or more showed an uptake ≥45%. Conclusions The wide variation across GPs suggests they might substantially influence screening uptake, highlighting a potential need to increase their commitment to CRC screening. Further research is needed to confirm the role of the number of registered subjects.
Home telemonitoring in heart failure patients and the effect of study design on outcome: A literature review
Authors: Umeh Chukwuemeka A. , Reddy Maunika , Dubey Ankit , Yousuf Mohammad , Chaudhuri Sumanta , Shah Shivang 
Published: August 2021

Introduction A wide range of study designs have been utilized in evaluations of home telemonitoring and these studies have produced conflicting outcomes over the years. While some of the research has shown that telemonitoring is beneficial in reducing all-cause mortality, hospital admission, length of stay in hospital and emergency room visits, other studies have not shown such benefits. This study, therefore, aims to examine several home telemonitoring study designs and the influence of study design on study outcomes. Method Articles were obtained by searching PubMed database with the term heart failure combined with the following terms: telemonitoring, telehealth, home monitoring, and remote monitoring. Searches were limited to randomized controlled trial conducted between year January 1, 2000 and February 6, 2021. The characteristics of the study designs and study outcomes were extracted and analyzed. Result Our review of 34 randomized controlled trials of heart failure telemonitoring did not show any significant influence of study design on reduction in number of hospitalizations and/or decrease in mortality. Studies that were done outside North America (USA and Canada) and studies that selected patients at high risk of re-hospitalization were more likely to result in decreased hospitalization and/or mortality, though this was not statistically significant. All the studies that met our inclusion criteria were from high-income countries and only one study enrolled patients at high risk of re-hospitalization. Conclusion There is a need for more studies to understand why telemonitoring studies in Europe were more likely to reduce hospital admission and mortality compared to those in North America. There is also a need for more studies on the effect of telemonitoring in patients at high risk of hospital readmission.
Cost-effectiveness of a telemonitoring program (telEPOC program) in frequently admitted chronic obstructive pulmonary disease patients
Authors: Esteban Cristóbal , Antón Ane , Moraza Javier , Iriberri Milagros , Larrauri Mateo , Mar Javier , Aramburu Amaia , Quintana José M ,   on behalf of the telEPOC group
Published: August 2021

Chronic obstructive pulmonary disease is a typical disease among chronic and respiratory diseases. The costs associated with chronic disease care are rising dramatically, and this makes it necessary to redesign care processes, including new tools which allow the health system to be more sustainable without compromising on the quality of the care, compared to that currently provided. One approach may be to use information and communication technologies. In this context, we explored the cost-effectiveness of applying a telemonitoring system to a cohort of chronic obstructive pulmonary disease patients with frequent readmissions (the telEPOC programme). We conducted an intervention study with a control group. The inclusion criteria used were having chronic obstructive pulmonary disease (forced expiratory volume in the first second/forced vital capacity  < 70%) and having been hospitalised for exacerbation at least twice in the last year or three times in the last 2 years. We estimated the costs incurred by patients in each group and calculated the quality-adjusted life years and incremental cost-effectiveness ratio. Overall, 77 patients were included in the control group and 86 in the intervention group. The raw cost-effectiveness analysis showed that the cost of the telEPOC intervention was significantly lower than that of usual care, while there were no significant differences between the groups in effectiveness. The incremental cost-effectiveness ratio for the intervention was €175,719.71 per quality-adjusted life-year gained. There were no differences between the intervention group (telemonitoring) and the control group (standard care) from the cost-effectiveness point of view. On the other hand, the intervention programme (telEPOC) was less expensive than routine clinical practice.
An observational study on the process of collaborative deliberation in arranging long-term care: The perception of clients and professionals
Authors: van Leersum Catharina M , van Steenkiste Ben , Wolf Judith RLM , van der Weijden Trudy , Moser Albine 
Published: August 2021

Background Clients are invited to play a role in decisions about their care. Collaborative deliberation comprises constructive engagement, recognition of alternative actions, comparative learning, construction and elicitation of preferences and preference integration. Collaborative deliberation between clients and professionals is a process that requires an interest in each other, sharing of views on alternatives and preferences and integrating into decisions. The aim is to gain insight into collaborative deliberation in consultations and the clients’ perception of arranging long-term care. Design A descriptive qualitative study to explore collaborative deliberation in consultations between clients and professionals. Six organisations providing long-term care were included. Data collection of nine clients involved observations of consultation with field notes and audio-records, interviews with clients and professionals shortly and 3–6 months after the consultation and questionnaires to collect background information. The data were analysed by deductive content analysis. Findings Constructive engagement was visible in all consultations. Clients and professionals showed respect, empathy and curiosity towards each other. In most consultations, two or more alternative actions are recognised and discussed. Comparative learning appears to be two sided, the client and the professional learn from each other's knowledge and experiences. Construction and elicitation of preference, and preference integration, seems to be present, but difficult to recognise in all consultations. Discussion/conclusion Although all propositions could be identified, there seems room for improvement in preference elicitation and integration of these preferences in the discussions on courses of action. Assistance seems needed with preference elicitation, both for the clients and for the professional.