bluuebunny/crossref_metadata_2025_split huggingface dataset:
Differences in honey bee bacterial diversity and composition in agricultural and pristine environments – a field study
Authors: Muñoz-Colmenero Marta , Baroja-Careaga Igor , Kovačić Marin , Filipi Janja , Puškadija Zlatko , Kezić Nikola , Estonba Andone , Büchler Ralph , Zarraonaindia Iratxe 
Published: July 2020

AbstractAgrochemicals and biocides are suspected to cause a dysbiosis of honey bee microbiota, decreasing colonies ability to respond to the environment. As a first step to investigate agriculture and beekeeping impact, hives bacteriomes from an anthropized environment (Agri-env) were compared to that of pristine’s (Prist-env). 16S rRNA sequencing evidenced differences in richness and composition between sample types (Gut (G), Brood (B), Bee-bread (BB)) and environments. Higher opportunist loads and shifts toward taxa capable of metabolizing insecticides were observed in G and B at Agri-env, while beneficial bacteria were enriched in Prist-env. Bacteria in BB did not differ, the acidity of the niche outweighing the influence of external factors. Results showed the environment plays a major role in shaping honey bee microbiota, the agricultural realm inducing a bacterial disruption that would let to colonies vulnerability. In contrast, a less susceptible bee will be promoted in less anthropized locations.
Pomegranate peel as a new low-cost adsorbent for ammonium removal
Authors: Bellahsen N. , Varga G. , Halyag N. , Kertész S. , Tombácz E. , Hodúr C. 
Published: July 2020

AbstractSince adsorption is one of the best ammonium removal methods, great efforts have been made to identify new low-cost and efficient adsorbents from agricultural waste and by-products due to their abundant availability, low-cost and eco-friendly advantages, in addition to the possibility of recycling ammonium back into agricultural processes. In this study, a series of batch experiments were performed to detect new bio-adsorbents for ammonium ions removal. Among the materials tested, pomegranate peel powder showed a high affinity to adsorb ammonium ions and, furthermore, available information on ammonium adsorption by this biomaterial is still missing from the literature. First, pomegranate peel powder was characterized by the determination of different parameters such as zeta potential, iodine number, Fourier-transform infrared spectroscopy analysis, scanning electron microscopy, particle size distribution and porosity. Then, the impact of various parameters, such as pH, contact time, stirring speed, adsorbent dose and adsorbate concentration in the adsorption process, was investigated. The highest ammonium removal capacity was obtained at pH = 4 using 400 mg of pomegranate peel powder and a stirring speed of 150 rpm for an initial concentration of ammonium of 30 mg/L. The system (adsorbent, adsorbate and solution) reached equilibrium after 2 h and the data fit well with the Langmuir model with a maximum monolayer adsorption capacity of 6.18 mg/g, while kinetics were well described by the pseudo-second-order model. These results introduce pomegranate peel powder as a promising bio-adsorbent to remove and recover ammonium from aqueous solutions.
How Many Tiers Do We Need? Type I Errors and Power in Multiple Baseline Designs
Authors: Lanovaz Marc J. , Turgeon Stéphanie 
Published: July 2020

AbstractDesign quality guidelines typically recommend that multiple baseline designs include at least three demonstrations of effects. Despite its widespread adoption, this recommendation does not appear grounded in empirical evidence. The main purpose of our study was to address this issue by assessing Type I error rate and power in multiple baseline designs. First, we generated 10,000 multiple baseline graphs, applied the dual-criteria method to each tier, and computed Type I error rate and power for different number of tiers showing a clear change. Second, two raters categorized the tiers for 300 multiple baseline graphs to replicate our analyses using visual inspection. When multiple baseline designs had at least three tiers and two or more of these tiers showed a clear change, the Type I error rate remained adequate (< .05) while power also reached acceptable levels (> .80). In contrast, requiring all tiers to show a clear change resulted in overly stringent conclusions (i.e., unacceptably low power). Therefore, our results suggest that researchers and practitioners should carefully consider limitations in power when requiring all tiers of a multiple baseline design to show a clear change in their analyses.
The Value of Neurological Assessment for Prediction of Subtle Cerebral Infarction
Authors: Horev Anat , Serlin Yonatan , Eshel Ron , Leker Ronen , Star Michael , Honig Asaf , Ifergane Gal 
Published: July 2020

ABSTRACT:We examined to what extent clinical assessment alone can predict subtle acute cerebral infarction on magnetic resonance imaging (MRI). Of the 72 patients presented to the emergency department (ED) with transient neurological deficits, 26 (36.1%) were predicted to be “positive” and 46 (63.9%) “negative” for transient ischemic attack/minor stroke by two independent neurologists. Twenty patients (27.8%) had acute restricted diffusion on MRI. Clinical assessment showed substantial agreement with MRI findings (Kappa = 0.75), sensitivity (95.0%), specificity (86.5%), positive-likelihood ratio 7.06, and negative-likelihood ratio 0.06. Neurological assessment has an excellent predicting value for MRI-confirmed acute cerebral infarction and a key role in the facilitation of effective patient care in the ED.
4474 READ-TV: Research and Exploratory Analysis Driven Time-data Visualization
Authors: Gaizo John Del , Alekseyenko Alexander , Catchpole Kenneth 
Published: July 2020

OBJECTIVES/GOALS:
A web interface that allows for easy upload of CSV text data to time-based visualizationsImplementation of change points analysis to identify and display points where event rates increased or decreasedcustomizable plots where the user can change point shapes, color, etc.customizable and advanced filtering supportsupport for plot comparisons and exportsMETHODS/STUDY POPULATION: We used the R/Shiny framework to develop a web application for visualization of time stamped data. The Research and Exploratory Analysis Driven Time-data Visualization (READ-TV) application allows for user-friendly mining for longitudinal patterns in data. READ-TV is built specifically for FD analysis, but is easily adaptable to other clinical use cases, as we allow for the use of general metadata on events and cases.The building of a quantitative framework for event analysis starts with the application of homogeneous Poisson processes, which relate the times of occurrence of events in terms of an underlying rate. To understand the changes in this underlying rate, changepoint analysis is used to model the rate as a function of time using piecewise constant approximations. The changepoint analysis allows us to identify the specific periods of time where the rate of FD is increased relative to a baseline or a desired operating range. RESULTS/ANTICIPATED RESULTS: READ-TV application allows for import of time stamped event data from multiple cases. Event and case metadata are supported to facilitate filtering and mining of interesting subsets of data. Stem plots are used for visualization of selected event timelines in chosen cases. This visualization is accompanied with summary of the number and estimates of rates of occurrence of specific event types (e.g. types of FD). Change-point analysis is implemented using the ‘changepoint‘ R library. These analyses allow the users to quickly understand whether the rates of events (FD) is changing across the case timeline and where exactly these changes are occurring. DISCUSSION/SIGNIFICANCE OF IMPACT: We have demonstrated the READ-TV application to the team of the AHRQ-funded Human Factors and Systems Integration in High Technology Surgery (HF-SIgHTS) study. The ability to visualize and perform quantitative analysis of the study data was received with unanimous positive feedback and enthusiasm. We continue READ-TV development focusing on (1) increased user-friendliness using the HF-SIgHTS as our focus group, (2) increased functionality, and (3) use of more general localization terminology to allow for other applications.
4382 All IN for Health: Promoting good health and engaging a health research volunteer community in the Hoosier state
Authors: Hall Jessica , Drury Christine , Egan Carmel 
Published: July 2020

OBJECTIVES/GOALS:
To improve and expand health and research literacy throughout Indiana by sharing health-focused resources and research outcomes.To encourage and increase health research participation throughout Indiana by promoting health research opportunities, including clinical studies.METHODS/STUDY POPULATION:
Discover and understand community concerns and barriers to good health and clinical research participation by providing a platform for individuals and communities to share their voices.Educate Indiana residents on the importance of participating in health research.Engage with the community to meet them where they are (online) and continue to build relationships throughout the state.Promote healthy living for Indiana residents by sharing health education and resources from existing state health organizations and initiatives.Develop and maintain the largest statewide database of research volunteers.RESULTS/ANTICIPATED RESULTS:
The anticipated results from this program include engagement of all populations and all communities throughout the state in conversation and education around good health and health research, as well as participation in health research across the CTSI’s partner organizations. Large-scale growth is expected in both the online community and consented volunteer registry is expected to include and engage racially and ethnically diverse populations, as well as special health populations, such as representatives of rural communities, aged, rare disease survivors, and transgender individuals.DISCUSSION/SIGNIFICANCE OF IMPACT:
Thorough this work, the Indiana CTSI has developed a unique program, educating the public about health research and opportunities to participate, while simultaneously supporting research departments with marketing promotion of their efforts, and a ready statewide volunteer community.
4507 Developing and implementing a Principal Investigator (PI) primer to improve the conduct of human research at the University of Minnesota
Authors: Wright Jessica , Maas Jennifer , Hoffman Megan 
Published: July 2020

OBJECTIVES/GOALS:
1.Assess the institutional and individual training needs and gaps in the conduct of human research for PIs at the University of Minnesota.2.Define the training program’s learning objectives.3.Develop and implement an in-person training session that addresses the gaps.METHODS/STUDY POPULATION:
Establish a planning committeeIdentify required and optional training that is already available for PIs, then determine gapsUnderstand research training needs based on conversations with departmental and human research protection program leaders.Develop learning objectives and curriculum based on Federal and Local regulations, guidelines, and policies.Establish a feedback loop regarding research compliance with the HRPP, to assess trends and ensure continuous improvement.Evaluate the training program’s participants using confidence and satisfaction measures.RESULTS/ANTICIPATED RESULTS: Developed and piloted a 90-minute in-person training program entitled “PI Primer” with the goals of:
Increasing awareness and knowledge of the role and responsibilities of the Principal Investigator (PIs) according to the International Harmonization for Good Clinical Practice (ICH-GCP), Federal Regulations (FDA, DHHS, ect.), and University of Minnesota Policies.Identifying root causes for receiving an FDA 483 (inspection findings).Addressing and preventing common inspection findings (CAPA).Describe individual and institutional conflict of interest (COI), and identify the key steps necessary to manage COIs.DISCUSSION/SIGNIFICANCE OF IMPACT: OHRP’s guidance on the “Responsibilities of Investigators” states that it is the Institution’s responsibility to provide human research training on a wide variety of topics to ensure the ethical conduct of research and protection of participants. PI Primer provides an in-person forum for investigators to build upon required responsible conduct of research and good clinical practice training to be able to apply the role and responsibilities of a PI to their own research. PI Primer also establishes a network of PIs in order to enhance connectivity and shared learning.
4530 Elucidating the Influence of Chemotherapy (melphalan) and /or C. difficile toxin B Exposure on Beta-catenin Protein Expression in Caco-2 Monolayers
Authors: Canales Jailene , Weiss Alison , Apewokin Senu 
Published: July 2020

OBJECTIVES/GOALS: We previously reported that genetic polymorphisms in the beta-catenin gene (CTNNB) are associated with the development of Clostridiodes difficile colitis during autologous stem cell transplantation (https://www-ncbi-nlm-nih-gov.proxy.libraries.uc.edu/pubmed/29594489). To biological validate these findings, we sought to evaluate the development of chemotherapy-associated Clostridiodes difficile infections by assessing the effect of C.difficile toxin B (TcdB) and of using melphalan in beta-catenin protein expression in Caco2 cells. METHODS/STUDY POPULATION: To determine the effect of melphalan and/or C.difficile toxin B on expression of Beta-catenin from human gut epithelial cells:
Adenocarcinoma cells (Caco-2) cells were seeded and allowed to grow into monolayersMonolayers were treated with PBS, TcdB, melphalan and/or TcdB + melphalan for 24 hours and then washed with PBSImmunofluorescence was measured on the monolayers to visualize three markers -DAPI-Nuclear Stain (blue),Actin-ccytoskeletal stain (red), B-Catenin (green)Analysis of images with ImageJ (NIH). Statistical analysis of the effect of TcdB and/or melphalan on β-catenin protein levels was determined by One-way ANOVA
Cells stained with a primary anti-β catenin antibody and an Alexa-488 secondary antibody were evaluated by flow cytometry to quantify the effect of melphalan and/or C. difficile toxin B on Caco2 cells. RESULTS/ANTICIPATED RESULTS: Immunofluorescent intensity was higher in the control (PSS exposed) cells when compared to melphalan, TcdB and mephalan+TcdB exposed cells (p = 0.026, 0.004 and 0.049 respectively) DISCUSSION/SIGNIFICANCE OF IMPACT: A significant difference was seen in β catenin expression in Caco-2 monolayers exposed to TcdB and/or melphalan. These data support the a role of β-catenin in the pathophysiology of CDI during chemotherapy and support GWAS findings reporting a difference in CDI susceptibility based on β-catenin genotype.
I Don’t Know
Authors: BACKUS MATTHEW , LITTLE ANDREW T. 
Published: July 2020

AbstractPolitical decision makers make choices in a complex and uncertain world, where even the most qualified experts may not know what policies will succeed. Worse, if these experts care about their reputation for competence, they may be averse to admitting what they don’t know. We model the strategic communication of uncertainty, allowing for the salient reality that sometimes the effects of proposed policies are impossible to know. Our model highlights the challenge of getting experts to admit uncertainty, even when it is possible to check predictive success. Moreover, we identify a novel solution: checking features of the question that only good experts will infer—in particular, whether the effect of policies is knowable—can induce uninformed experts do say “I Don’t Know.”
FRATERNAL FRIENDS: SOUTH AFRICAN COMMUNISTS AND CZECHOSLOVAKIA, 1945–89
Authors: Lodge Tom , Oralek Milan 
Published: July 2020

AbstractCzechoslovak ‘people's democracy’ supplied a model for the development of a South African notion of a ‘national democratic’ revolution as well as providing key skills and resources. Czechoslovak support for this project in the 1960s and 1970s was both a source of confidence and fragility for South African Communists, boosting morale but confirming their subordinate status in their partnership with African nationalism. Drawing upon Czech archival materials as well as memoirs and interviews, this paper explores encounters and connections between South African Communists and the Czechs against the backdrop of the broader strategic concerns that shaped Soviet and Eastern European support for South African liberatory politics.
The cow–calf relationship: from maternal responsiveness to the maternal bond and the possibilities for fostering
Authors: Kent John P. 
Published: July 2020

AbstractThe relationship between the cow and calf develops over time after birth. The behavioural mechanisms underlying its development are important and comparisons with other species may increase our understanding. In nature the cow will separate herself from the herd to give birth and then the cow–calf relationship will develop with the ability to recognise each other. While twinning levels are low in cows, they do rear their twin calves. If the calf is lost at or after birth the cow can be responsive towards other calves and in specific circumstances the cow can develop a maternal bond with an alien calf, i.e. foster. In this Research Reflection a distinction is made between the development of, on the one hand, maternal responsiveness (the tendency of the cow to care for a calf which occurs before birth) and, on the other hand, the development of the maternal–filial bond or relationship which is reciprocal, occurs after birth and is characterised by the ability to discriminate the mother's own calf from alien calves. These processes can overlap and the relationship between cow and calf in this ‘hider’ species is more plastic than in some other mammals. For example, a cow might form an attachment with an alien calf before she gives birth. After the cow has given birth the loss of her own calf may result in the state of maternal responsiveness being maintained, such that developing a maternal bond with one or several appropriate alien calves is possible. Viable fostering techniques are possible. If a maternal relationship to the mother's own calf has developed then fostering will be more difficult. If the cow's relationship with her own calf is not exclusive, and she is in a state of maternal responsiveness then fostering of calves of an appropriate age and status can be achieved.
Exosome cargo in milk as a potential marker of cow health
Authors: Colitti Monica , Sgorlon Sandy , Stefanon Bruno 
Published: July 2020

AbstractRecent advances on milk exosomes (EXO), cargoes in cell−cell communication, explored their role within and between individuals, including in dairy species. The potential use of EXO as biomarkers of disease and metabolic conditions adds significant interest to the study of EXO in milk. Although several researches have been carried out on circulating miRNA in the milk, less information is available about milk-derived exosomal miRNAs, which are stable over time and resistant to digestion and milk processing. EXO are taken up by recipient cells through specific mechanisms, which enable the selective delivery of cargoes. This suggests that EXO cargoes can be used as biomarkers of health. Nevertheless, methodological limitations and potential applications of milk EXO in dairy ruminants must be considered. The paucity of studies that associate the EXO cargo to specific challenges deserves further investigations to unravel the variation of miRNA and proteins cargo in relation to metabolic imbalance and infectious disease of the mammary gland.
Validation of a Belgian Prediction Model for Patient Encounters at Music Mass Gatherings
Authors: Spaepen Kris , Haenen Winne AP , Kaufman Leonard , Beens Kevin , Vandekerckhove Philippe , Hubloue Ives 
Published: July 2020

AbstractIntroduction:A Belgian predictive medical resource tool, Plan Risk Manifestations (PRIMA), for the prediction of the number of patient encounters at mass gatherings (MGs) has recently been developed, in addition to the existing models of Arbon and Hartman. This study presents the results of the validation process for the PRIMA model for music MGs.Methods:A retrospective study was conducted using data gathered from music MGs in the province of Antwerp (Belgium) during the period of 2012-2016. Data from 87 music MGs were used for the study. The forecast of medical resources for these events was determined by entering the characteristics of individual events into the Arbon, Hartman, and PRIMA models. In order to determine if the PRIMA model is under- or over-predictive, the data gathered were retrospectively compared to the predicted number of resources needed using the aforementioned models. Statistical analysis included means, medians, and interquartile ranges (IQRs). Nonparametric related samples test (Wilcoxon Samples Signed Rank Test) for comparison of the median in deviations in predictions of patient presentation rates (PPRs) was performed using SPSS version 23 (IBM Corp.; Armonk, New York USA). Confidence interval levels were set at 95% and results were deemed statistically significant at P <.05. This triple comparison was used to determine the overall performance of all three models.Results:All three models had an acceptable rate of over-prediction of number of patient encounters ([Arbon 25.29%; 95% CI, 30.91-43.74]; [Hartman 29.89%; 95% CI, 57.10-68.90]; and [PRIMA 19.54%; 95% CI, 57.80-76.20]). But all models also had a high rate of under-prediction of number of patient encounters ([Arbon 74.71%; 95% CI, 453.31-752.52]; [Hartman 70.11%; 95% CI, 546.90-873.77]; and [PRIMA 78.16%; 95% CI, 288.91-464.89]). Only the PRIMA model succeeded in the correct prediction of the number of patient encounters on two occasions (2.3%).Conclusion:Results of this study are in-line with existing literature. When comparing the predicted patient encounters, all three models had high rates of under-prediction and moderate rates of over-prediction. When comparing mean deviations, the PRIMA model had the lowest mean deviation of all predicted PPRs. Belgian events of the types included in the presented data may use the PRIMA model with confidence to predict PPRs and estimate the in-event health services (IEHS) requirements.
Prevalence of stunting and obesity in Ecuador: a systematic review
Authors: Hajri Tahar , Angamarca-Armijos Viviana , Caceres Luis 
Published: July 2020

Abstract

Objective:
In low- and middle-income countries, undernutrition remains a major risk factor for child growth retardation. In addition, the emergence of obesity in recent years is adding another public health concern in that both stunting and obesity are associated with serious adverse health consequences. This review was designed to evaluate the prevalence of stunting and obesity in Ecuador.

Design:
Electronic databases were searched for articles published through February 2018 reporting the prevalence of stunting and/or obesity. Selected data were subjected to meta-analysis and pooled prevalence and their 95 percentiles (95 % CI) were calculated.

Setting:
Studies were identified in Medline, Web of Science, CINAHL, Cochrane Database and Ibero-America databases.

Participants:
Population of Ecuador.

Results:
Twenty-three articles were selected according to the inclusion/exclusion criteria of the study. The estimate of pooled prevalence of stunting was 23·2 % (95 % CI 23·3, 23·5) in preschoolers (age < 5 years), but was markedly higher in indigenous and rural communities. Pooled prevalence of obesity was 8·1 % (95 % CI 6·9, 9·3), 10·7 % (95 % CI 9·6, 11·7) and 10·5 % (95 % CI 9·2, 11·8) in preschoolers, school-age children (age: 5–11 years) and adolescent (age: 12–18 years), respectively. In adults (age ≥ 19 years), the rate of obesity was remarkably high as indicated by an overall estimate equal to 44·2 % (95 % CI 43·1, 45·4).

Conclusions:
This study underlines high levels of stunting among children and obesity among adults in Ecuador, both of which are not equally distributed among the population. The magnitude of this double burden emphasises the need for sustained and targeted interventions.