bluuebunny/crossref_metadata_2025_split huggingface dataset:
In vitro seed germination and biochemical profiling of Artemisia absinthium exposed to various metallic nanoparticles
Authors: Hussain Mubashir , Raja Naveed Iqbal , Mashwani Zia-Ur-Rehman , Iqbal Muhammad , Sabir Sidra , Yasmeen Farhat 
Published: May 2017

AbstractIn the recent years, nanotechnology has attained much attention in the every field of science. The synthesis, characterisation and applications of metallic nanoparticles (MNPs) have become an important branch of nanotechnology. In the current study, MNPs were synthesised through polyols process and applied in vitro to study their effect on medicinally important plant :Artemisia absinthium. The current study strives to check the effect of MNPs, i.e., Ag, Cu and Au on seed germination, root and shoot length, seedling vigour index (SVI) and biochemical profiling inA. absinthium. The seeds were inoculated on MS medium supplemented with various combinations of MNPs suspension. The seed germination was greatly influenced upon the application of MNPs and was recorded highest for the silver nanoparticles (AgNPs) suspensions. The best result for seed germination (98.6%) was obtained in MS medium supplemented with AgNPs as compared to control (92.9%) and other nanoparticles, i.e., copper (69.6%) and gold (56.5%), respectively, after 35 days of inoculation. Significant results were obtained for root length, shoot length and SVI in response to application of AgNPs as compared to copper nanoparticles (CuNPs) and gold nanoparticles (AuNPs). These nanoparticles (NPs) could induce stress in plants by deploying the endogenous mechanism. In response to these stresses, plants produce various defence compounds. Total phenolic content (TPC) and total flavonoid content (TFC) were significant in the MS medium supplemented with AgNPs as compared to other NPs, while DPPH radical scavenging assay (RSA) was highest in AuNPs treated plantlets. The MNPs showed higher toxicity level and enhanced secondary metabolites production, total phenolic content, total flavonoid content, antioxidant activity, superoxide dismutase (SOD) activity and total protein content.
Implementing Skin‐to‐Skin Contact for Cesarean Birth
Authors: Boyd Margaret M. 
Published: May 2017

AbstractEarly skin‐to‐skin (STS) contact in the OR facilitates the development of mothering behaviors, breastfeeding success, and newborn adaptation to extrauterine life. A team at my institution performed a quality improvement project to implement a standard of care for STS contact in the OR during and after cesarean birth. Thirty‐seven of 50 mother‐infant dyads experienced STS contact in the OR or in the postanesthesia care unit. Twenty‐five mothers and newborns who experienced STS contact did so on the OR bed. The median time newborns spent engaged in STS contact with their mothers was 42 minutes and 30 seconds. Developing and using a standard of care to implement this evidence‐based practice facilitated acceptance of this intervention. Obstacles that staff members encountered included maternal or neonatal instability, equipment problems, and nurse staffing issues. Staff members addressed these obstacles through creative problem‐solving.
Addressing the endogeneity dilemma in operations management research: Theoretical, empirical, and pragmatic considerations
Authors: Ketokivi Mikko , McIntosh Cameron N. 
Published: May 2017

AbstractIn this paper, we examine the problem of endogeneity in the context of operations management research. Whereas the extant literature has focused primarily on the statistical aspect of the problem, a comprehensive treatment requires an examination of theoretical and pragmatic considerations as complements. The prevailing problem with the focus on statistical techniques is that the standards tend to be derived from idealizations: the correlation between a regressor and a disturbance term must be exactly zero, or the analysis will be invalid. In actual empirical research settings, such a knife‐edge assumption can never be satisfied, indeed it cannot even be directly tested. Idealizations are useful in helping us understand what it would take to eliminate endogeneity, but when applied directly and unconditionally, they lead to unreasonable standards that may unnecessarily stifle substantive inquiry. We believe that it is far more productive and meaningful to ask: “What can we realistically expect empirical scientists to be able to achieve?” To this end, we cover and revisit some of the general technical material on endogeneity, paying special attention to the idiosyncrasies of operations management research and what could constitute reasonable criteria for addressing endogeneity in empirical operations management studies.
The oldest Cambrian skeletal fossils of Spain (Cadenas Ibéricas, Aragón)
Authors: GÁMEZ VINTANED JOSÉ ANTONIO , LIÑÁN ELADIO , NAVARRO DAVID , ZHURAVLEV ANDREY YU. 
Published: May 2017

AbstractDiverse skeletal assemblage has been discovered in the Ediacaran/Cambrian strata of the Codos locality in NE Spain (Aragón, Cadenas Ibéricas). This assemblage includes at least seven genera, only three of which can be ascribed to known taxa. All the fossils are preserved in phosphate but their original microstructures are traceable by both elementary composition and microstructural features that are indicative for primary aragonite and high-magnesium calcite biomineralogies. Already these early skeletal fossils show sophisticated microstructures represented by heterogeneous multilayered composites to satisfy the requirements for better protection against both chemical dissolution and mechanical predator deterioration. The most common and best-preserved fossil, which is tubicolous Codositubulus grioensis gen. et sp. nov., is described here. The composition of the fossil assemblage and its stratigraphic position are indicative for the lowermost Terreneuvian (lower Cambrian) or even pre-Terreneuvian age of this fauna.
Laryngeal amyloidosis: diagnosis, pathophysiology and management
Authors: Phillips N M , Matthews E , Altmann C , Agnew J , Burns H 
Published: May 2017

AbstractBackground:Laryngeal amyloidosis represents approximately 1 per cent of all benign laryngeal lesions, and can cause variable symptoms depending on anatomical location and size. Treatment ranges from observation through to endoscopic microsurgery, laser excision and laryngectomy.Objectives:To highlight the diversity of presentations, increase awareness of paediatric amyloidosis and update the reader on current management.Case series:Five cases are illustrated. Four adult patients were female, and the one child, the second youngest in the literature, was male. Amyloid deposits were identified in all laryngeal areas, including the supraglottis, glottis and subglottis. Treatment consisted of balloon dilatation, endoscopic excision, laser cruciate incision, and resection with carbon dioxide laser, a microdebrider and coblation wands.Conclusion:Laryngeal amyloidosis remains a rare and clinically challenging condition. Diagnosis should be considered for unusual appearing submucosal laryngeal lesions. Treatment of this disease needs to be evaluated on a case-by-case basis and managed within an appropriate multidisciplinary team.
Simulated global warming increases usnic acid but reduces perlatolic acid in the mat-forming terricolous lichenCladonia stellaris
Authors: ASPLUND Johan , SIEGENTHALER Andy , GAUSLAA Yngvar 
Published: May 2017

AbstractLichens as sessile and slow-growing symbiotic associations have evolved various carbon-based secondary compounds (CBSCs) to mitigate the effects of some stressors in the extreme environments in which they often grow. The mat-forming lichenCladonia stellaris, an important fodder for reindeer, produces usnic acid in the outermost layer and perlatolic acid in the medulla. Here, we studied effects of simulated global warming on these CBSCs inC. stellariscultivated in climate chambers with: 1) ambient conditions as control or 2) ambient conditions +4°C. The chambers simulated, at an hourly resolution, an averaged 10-year growing season dynamic from a long-term monitored boreal mire in northern Sweden. After two months of acclimation, +4°C warming in one simulated growing season increased the concentration of usnic acid by 31% compared with ambient conditions, whereas the warming decreased the concentration of perlatolic acid by 14%. Since lichen CBSCs play important roles in ecosystem processes such as lichenivory and decomposition, these changes may profoundly affect lichen-dominated ecosystems.
Taxonomy of the corticolous, shrubby, esorediate, neotropical species ofUsneaAdans. (Parmeliaceae) with an emphasis on southern Brazil
Authors: GERLACH Alice da Cruz Lima , CLERC Philippe , BORGES DA SILVEIRA Rosa Mara 
Published: May 2017

AbstractSeventeen corticolous shrubby apotheciateUsneaspecies without vegetative propagules are reported from Brazil, including five species that are new to science:Usnea aurantiaca-parvulaA. Gerlach & P. Clerc (characterized by an orange medulla and lageniform spinulose fibrils),U. cirrosaMotyka,U. cladocarpaFée (syn. nov.:U. ramillosaMotyka),U. concinnaStirton (lectotype designated here, syn. nov.U. radiataStirton,U. floridavar.scabrosaZahlbr.),U. cristatulaMotyka,U. erinaceaVain.,U. fleigiaeA. Gerlach & P. Clerc (characterized by large spores and a thin, lax medulla),U. grandisporaA. Gerlach & P. Clerc (characterized by large spores, a black base and protocetraric or salazinic acids in the medulla),U. kalbianaP. Clerc & A. Gerlach (characterized by a vitreous cortex and annular cracks in the basal part),U. lunariaMotyka,U. meridionalisZahlbr. (syn. nov.:U. michauxiiI. I. Tav.),Usneacf.morelianaMotyka,U. parvulaMotyka,U. steineriZahlbr,U. subelegans(Vain.) B. de Lesd. (lectotype designated here),U. subparvulaA. Gerlach & P. Clerc (characterized by spinulose fibrils and protocetraric acid in the medulla) and one as yet unidentified species (namedUsneasp. 1).Usnea cirrosa,U. cristatulaandU. erinaceaare new records for Brazil. A full description with morphological, anatomical (CMA and ascospores) and chemical features (TLC), as well as geographical distribution, is provided for each species along with an identification key to all species reported. Molecular data from the ITS rDNA,RPB1andMcm7markers are present for most taxa, except forU. concinna,U. cristatula,U. kalbiana,U. lunaria,U.cf.morelianaandU. subelegans.
Acute memory and psychotomimetic effects of cannabis and tobacco both ‘joint’ and individually: a placebo-controlled trial
Authors: Hindocha C. , Freeman T. P. , Xia J. X. , Shaban N. D. C. , Curran H. V. 
Published: May 2017

BackgroundCannabis and tobacco have contrasting cognitive effects. Smoking cannabis with tobacco is prevalent in many countries and although this may well influence cognitive and mental health outcomes, the possibility has rarely been investigated in human experimental psychopharmacological research.MethodThe individual and interactive effects of cannabis and tobacco were evaluated in 24 non-dependent cannabis and tobacco smokers in a randomized, placebo-controlled, double-blind, 2 (cannabis, placebo) × 2 (tobacco, placebo) crossover design. Verbal memory (prose recall), working memory (WM) performance including maintenance, manipulation and attention (N-back), psychotomimetic, subjective and cardiovascular measures were recorded on each of four sessions.ResultsCannabis alone impaired verbal memory. A priori contrasts indicated that tobacco offset the effects of cannabis on delayed recall. However, this was not supported by linear mixed model analysis. Cannabis load-dependently impaired WM. By contrast, tobacco improved WM across all load levels. The acute psychotomimetic effects and ratings of ‘stoned’ and ‘dizzy’ induced by cannabis were not altered by tobacco. Cannabis and tobacco had independent effects on increasing heart rate and interacting effects on increasing diastolic blood pressure.ConclusionsRelative to placebo, acute cannabis impaired verbal memory and WM. Tobacco enhanced performance on WM, independently of cannabis. Moreover, we found some preliminary evidence that tobacco may offset the effects of cannabis on delayed, but not immediate, verbal recall. In contrast, the psychotomimetic and subjective effects of cannabis were unaffected by tobacco co-administration. By reducing the cognitive impairment from cannabis, tobacco co-administration may perpetuate use despite adverse health consequences.
Kinematic analysis and multi-objective optimization of a new reconfigurable parallel mechanism with high stiffness
Authors: Huang Guanyu , Guo Sheng , Zhang Dan , Qu Haibo , Tang Hongyan 
Published: May 2017

SUMMARYThis paper presents a novel reconfigurable parallel mechanism, which can serve as a machine tool. The proposed parallel mechanism can change its structure parameters by driving a bevel gear system fixed in the base platform. First, the forward and inverse kinematics of the proposed mechanism are investigated. Second, the reachable workspace and Jacobian matrix are conducted. Based on the Jacobian matrix, the stiffness model and dexterity of the end effector are developed in detail. Finally, a multi-objective optimization is performed by using the Genetic Algorithm, and the workspace and global performance indexes of stiffness as well as the dexterity are considered as the performance indices to improve the performance of the reconfigurable parallel mechanism. Finally, Pareto frontier figure and several tables are provided to illustrate the results of the optimization. The results showed the proposed method has improved the performance of the reconfigurable machine tool in terms of its stiffness and dexterity.
ASSESSING PATIENT'S PERCEPTION OF ORAL TELECONSULTATION
Authors: Petcu Roland , Kimble Chris , Ologeanu-Taddei Roxana , Bourdon Isabelle , Giraudeau Nicolas 
Published: May 2017

Objectives: The evaluation of telemedicine from the patient's point of view has focused on the patient pathway and patient satisfaction. However, research in this field does not provide us with the means to assess a patient's perception of the procedure if their reasoning ability is impaired. In this study, we use direct observation of a patient's behavior and mood to assess their perception of an oral teleconsultation procedure.Methods: This study has been conducted in the context of a pilot project using an asynchronous teleconsultation to improve access to dental care for the dependent elderly, disabled people, and prisoners, some of whom may be cognitively impaired. We use a direct observation form consisting of five behavioral variables and eight affect variables to reflect the patient's experience of the oral teleconsultation procedure.Results: A total of 135 patients were evaluated; 10 refused the procedure. Psychotic patients (n = 33) had a somewhat negative experience during the oral teleconsultation procedure. Patients who were not psychotic had a positive experience; this decreased as we moved from the autonomous to the semi-autonomous and then to the dependent sub-group. Some gender differences were also noted.Conclusions: Improving evidence on evaluating the acceptance of the cognitively impaired is required to improve the technology development process so that it can be translated into an improved patient experience and adherence. Although the study was specifically focused on teledentistry, the approach described in this study could be adapted to other forms of teleconsultation.
Personality risk for antisocial behavior: Testing the intersections between callous–unemotional traits, sensation seeking, and impulse control in adolescence
Authors: Mann Frank D. , L. Paul Sara , Tackett Jennifer L. , Tucker-Drob Elliot M. , Harden K. Paige 
Published: May 2017

AbstractThe current project seeks to integrate literatures on personality risk for antisocial behavior (ASB) by examining how callous–unemotional traits relate to (a) the development of disinhibited traits and (b) the association between disinhibited traits and ASB. In Study 1, using a nationally representative sample of youth (N> 7,000), we examined whether conduct problems and lack of guilt assessed during ages 4–10 years predicted levels of and changes in disinhibited traits over the course of adolescence, and moderated associations between these traits and ASB. High levels of childhood conduct problems were associated with higher levels of impulsivity, sensation seeking, and ASB in early adolescence, whereas lack of guilt was associated with lower levels of sensation seeking. Neither conduct problems nor lack of guilt significantly predicted changes in impulsivity or sensation seeking, and associations among changes in sensation seeking, impulsivity, and ASB were also consistent across levels of conduct problems and lack of guilt. In Study 2, using a cross-sectional sample of adolescents (N= 970), we tested whether callous–unemotional traits moderated associations between disinhibited traits and ASB. Consistent with the results of Study 1, associations between disinhibited personality and ASB were consistent across a continuous range of callous–unemotional traits.
Quantifying respiratory sinus arrhythmia: Effects of misspecifying breathing frequencies across development
Authors: Shader Tiffany M. , Gatzke-Kopp Lisa M. , Crowell Sheila E. , Jamila Reid M. , Thayer Julian F. , Vasey Michael W. , Webster-Stratton Carolyn , Bell Ziv , Beauchaine Theodore P. 
Published: May 2017

AbstractLow resting respiratory sinus arrhythmia (RSA), and to a lesser extent excessive RSA reactivity to emotion evocation, are observed in many psychiatric disorders characterized by emotion dysregulation, including syndromes spanning the internalizing and externalizing spectra, and other conditions such as nonsuicidal self-injury. Nevertheless, some inconsistencies exist. For example, null outcomes in studies of RSA–emotion dysregulation relations are sometimes observed among younger participants. Such findings may derive from use of age inappropriate frequency bands in calculating RSA. We combine data from five published samples (N= 559) spanning ages 4 to 17 years, and reanalyze RSA data using age-appropriate respiratory frequencies. Misspecifying respiratory frequencies results in overestimates of resting RSA and underestimates of RSA reactivity, particularly among young children. Underestimates of developmental shifts in RSA and RSA reactivity from preschool to adolescence were also observed. Although correlational analyses revealed weak negative associations between resting RSA and aggression, those with clinical levels of externalizing exhibited lower resting RSA than their peers. No associations between RSA reactivity and externalizing were observed. Results confirm that age-corrected frequency bands should be used when estimating RSA, and that literature-wide overestimates of resting RSA, underestimates of RSA reactivity, and underestimates of developmental shifts in RSA and RSA reactivity may exist.
Processed and ultra-processed foods are associated with lower-quality nutrient profiles in children from Colombia
Authors: Cornwell Brittany , Villamor Eduardo , Mora-Plazas Mercedes , Marin Constanza , Monteiro Carlos A , Baylin Ana 
Published: May 2017

AbstractObjectiveTo determine if processed and ultra-processed foods consumed by children in Colombia are associated with lower-quality nutrition profiles than less processed foods.DesignWe obtained information on sociodemographic and anthropometric variables and dietary information through dietary records and 24 h recalls from a convenience sample of the Bogotá School Children Cohort. Foods were classified into three categories: (i) unprocessed and minimally processed foods, (ii) processed culinary ingredients and (iii) processed and ultra-processed foods. We also examined the combination of unprocessed foods and processed culinary ingredients.SettingRepresentative sample of children from low- to middle-income families in Bogotá, Colombia.SubjectsChildren aged 5–12 years in 2011 Bogotá School Children Cohort.ResultsWe found that processed and ultra-processed foods are of lower dietary quality in general. Nutrients that were lower in processed and ultra-processed foods following adjustment for total energy intake included: n-3 PUFA, vitamins A, B12, C and E, Ca and Zn. Nutrients that were higher in energy-adjusted processed and ultra-processed foods compared with unprocessed foods included: Na, sugar and trans-fatty acids, although we also found that some healthy nutrients, including folate and Fe, were higher in processed and ultra-processed foods compared with unprocessed and minimally processed foods.ConclusionsProcessed and ultra-processed foods generally have unhealthy nutrition profiles. Our findings suggest the categorization of foods based on processing characteristics is promising for understanding the influence of food processing on children’s dietary quality. More studies accounting for the type and degree of food processing are needed.
The Hubble Catalog of Variables
Authors: Gavras P. , Bonanos A. Z. , Bellas-Velidis I. , Charmandaris V. , Georgantopoulos I. , Hatzidimitriou D. , Kakaletris G. , Karampelas A. , Laskaris N. , Lennon D. J. , Moretti M. I. , Pouliasis E. , Sokolovsky K. , Spetsieri Z. T. , Tsinganos K. , Whitmore B. C. , Yang M. 
Published: May 2017

AbstractThe Hubble Catalog of Variables (HCV) is a 3 year ESA funded project that aims to develop a set of algorithms to identify variables among the sources included in the Hubble Source Catalog (HSC) and produce the HCV. We will process all HSC sources with more than a predefined number of measurements in a single filter/instrument combination and compute a range of lightcurve features to determine the variability status of each source. At the end of the project, the first release of the Hubble Catalog of Variables will be made available at the Mikulski Archive for Space Telescopes (MAST) and the ESA Science Archives. The variability detection pipeline will be implemented at the Space Telescope Science Institute (STScI) so that updated versions of the HCV may be created following the future releases of the HSC.
Data mining and visualization from planetary missions: the VESPA-Europlanet2020 activity
Authors: Longobardo Andrea , Capria Maria Teresa , Zinzi Angelo , Ivanovski Stavro , Giardino Marco , Di Persio Giuseppe , Fonte Sergio , Palomba Ernesto , Antonelli Lucio Angelo , Fonte Sergio , Giommi Paolo ,   the Europlanet VESPA 2020 Team
Published: May 2017

AbstractThis paper presents the VESPA (Virtual European Solar and Planetary Access) activity, developed in the context of the Europlanet 2020 Horizon project, aimed at providing tools for analysis and visualization of planetary data provided by space missions. In particular, the activity is focused on minor bodies of the Solar System.The structure of the computation node, the algorithms developed for analysis of planetary surfaces and cometary comae and the tools for data visualization are presented.
Interactive (statistical) visualisation and exploration of a billion objects with vaex
Authors: Breddels M. A. 
Published: May 2017

AbstractWith new catalogues arriving such as the Gaia DR1, containing more than a billion objects, new methods of handling and visualizing these data volumes are needed. We show that by calculating statistics on a regular (N-dimensional) grid, visualizations of a billion objects can be done within a second on a modern desktop computer. This is achieved using memory mapping of hdf5 files together with a simple binning algorithm, which are part of a Python library called vaex. This enables efficient exploration or large datasets interactively, making science exploration of large catalogues feasible. Vaex is a Python library and an application, which allows for interactive exploration and visualization. The motivation for developing vaex is the catalogue of the Gaia satellite, however, vaex can also be used on SPH or N-body simulations, any other (future) catalogues such as SDSS, Pan-STARRS, LSST, etc. or other tabular data. The homepage for vaex is http://vaex.astro.rug.nl.