bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tunneling Coronally Advanced Flap for Treatment of Maxillary Single Gingival Recessions: A Microsurgical Approach
Authors: Chiantella Giovanni Carlo 
Published: August 2018

IntroductionThis case report proposes a microsurgical approach of the coronal advanced flap (CAF) technique for the coverage of Miller Class I (MCI) and Miller Class II (MCII) gingival recessions (GR). The interdental papillae are included in the flap in order to achieve a good stability during the healing phase and to improve the vascularization of the interdental areas.Case PresentationThe surgical treatment was given to three patients with a total of five single MCI and MCII GR present at their upper canines. Tunnel full‐thickness flaps, including papillae, were prepared by using two vertical releasing incisions adjacent to the defect. Autogenous connective grafts (two cases) or suine collagen matrices (three cases) were fixed on the denuded root surfaces. Finally, the flaps were coronally advanced and fixed by sutures over the cemento‐enamel junction. The grafts did not expose during the healing and root coverage was obtained in all cases after a period of 6 months.ConclusionThis case report proposes a microsurgical tunnel coronal advanced flap with the inclusion of adjacent papillae for treating single MCI and MCII GR with connective autografts or xenografts.
SrH4P6N12 and SrP8N14: Insights into the Condensation Mechanism of Nitridophosphates under High Pressure
Authors: Wendl Sebastian , Schnick Wolfgang 
Published: August 2018

AbstractThe (imido)nitridophosphates SrH4P6N12 and SrP8N14 were synthesized as colorless crystals by high‐pressure/high‐temperature reactions using the multianvil technique (5 GPa, ca. 1075 °C). Stoichiometric amounts of Sr(N3)2, P3N5, and amorphous HPN2 were used as starting materials. Whereas the crystal structure of SrH4P6N12 was solved and refined from single‐crystal X‐ray diffraction data and confirmed by Rietveld refinement, the structure of SrP8N14 was determined from powder diffraction data. In order to confirm the structures, 1H and 31P solid‐state NMR spectroscopy and FTIR spectroscopy were carried out. The chemical composition was confirmed with EDX measurements. Both compounds show unprecedented layered network structure types, built up from all‐side vertex‐sharing PN4 tetrahedra which are structurally related. The structural comparison of both compounds gives first insights into the hitherto unknown condensation mechanism of nitridophosphates under high pressure.
Porous Organic Polymers with Built‐in N‐Heterocyclic Carbenes: Selective and Efficient Heterogeneous Catalyst for the Reductive N‐Formylation of Amines with CO2
Authors: Lv Hui , Wang Wenlong , Li Fuwei 
Published: August 2018

AbstractA series of porous organic polymers (POPs) based on N‐heterocyclic carbene (NHC) building blocks has been prepared through an octacarbonyldicobalt complex [Co2(CO)8]‐catalyzed trimerization of terminal alkyne groups. By changing the monomer ratio in the copolymerization, cross‐linked POPs with tunable surface areas of 485–731 m2 g−1 and pore volumes of 0.31–0.51 cm3 g−1 were easily prepared. Compared with the analogues homogeneous NHC (SIPr) catalysts, the POPs exhibited an enhanced catalytic activity and high selectivity in the reductive functionalization of CO2 with amines. The extraordinary performance of the sample could be attributed to the combination of the gas enrichment (or storage) effect, enhanced in‐pore concentrations of other substrates, and advantageous micropore structures of the porous polymers. Meanwhile, these catalysts can easily be separated and recycled from the reaction systems with only a slight loss of activity. This excellent catalytic performance and facile recycling of heterogeneous catalysts make them very attractive. These NHC‐containing POPs may provide a new platform for catalytic transformations of CO2.
Neon is a gas and has two rings – Separating the macroscopic and submicroscopic level of the periodic table
Authors: Abels Simone , Koliander Brigitte , Plotz Thomas , Heidinger Christine 
Published: August 2018

AbstractEs wird im Chemieunterricht nicht immer klar dargelegt, ob das besprochene Thema auf der makroskopischen oder auf der submikroskopischen Ebene abgehandelt wird. Auch in den eingesetzten Lernmaterialien, wie beispielsweise in den Versionen des Periodensystems der Elemente, die in Schulbüchern dargestellt sind, werden die Ebenen häufig miteinander vermischt. Dies kann für Schülerinnen und Schüler ein großes Lernhindernis darstellen. Der Artikel zeigt an einer Fallstudie die Lernschwierigkeiten von Schülerinnen und Schülern bei der Verwendung eines solchen Periodensystems bei der Erarbeitung des Atombaus auf. Als ein möglicher Weg zur Vermeidung der dargelegten Verständnisschwierigkeiten wird die Verwendung von zwei Periodensystemen zur Diskussion gestellt, die die unterschiedlichen Betrachtungsebenen explizit trennen.
Heterogeneous distribution of doublecortin‐expressing cells surrounding the rostral migratory stream in the juvenile mouse
Authors: Aoyagi Yuka , Hibi Terumasa , Kimori Yoshitaka , Sawada Masato , Kawakami Ryosuke , Sawamoto Kazunobu , Nemoto Tomomi 
Published: August 2018

AbstractIn the postnatal mammalian brain, neural stem cells of the ventricular–subventricular zone continue to generate doublecortin (Dcx)‐expressing immature neurons. Throughout life, these immature neurons migrate to the olfactory bulb through the rostral migratory stream (RMS). In this study, we investigated the distribution of these putative immature neurons using enhanced green fluorescent protein (EGFP) expression in the area surrounding the RMS of the juvenile Dcx‐EGFP mice. Through the combined use of an optical clearing reagent (a 2,2′‐thiodiethanol solution) and two‐photon microscopy, we visualized three‐dimensionally the EGFP‐positive cells in the entire RMS and its surroundings. The resulting wide‐field and high‐definition images along with computational image processing methods developed in this study were used to comprehensively determine the position of the EGFP‐positive cells. Our findings revealed that the EGFP‐positive cells were heterogeneously distributed in the area surrounding the RMS. In addition, the orientation patterns of the leading process of these cells, which displayed the morphology of migrating immature neurons, differed depending on their location. These novel results provide highly precise morphological information for immature neurons and suggest that a portion of immature neurons may be detached from the RMS and migrate in various directions.
A Quadrupole‐Central‐Transition 59Co NMR Study of Cobalamins in Solution
Authors: Shen Jiahui , Terskikh Victor , Wu Gang 
Published: August 2018

AbstractWe report the first observation of quadrupole‐central‐transition (QCT) 59Co (I=7/2) NMR signals from three cobalamin (Cbl) compounds (CNCbl, MeCbl, and AdoCbl) dissolved in glycerol/water. Measurements were performed at four magnetic fields ranging from 11.7 to 21.1 T. We found that the 59Co QCT signals observed for cobalamin compounds in the slow motion regime (ω0τC≫1) are significantly narrower than those observed from their aqueous solutions where the molecular tumbling is near the condition of ω0τC≈1. We demonstrated that an analysis of 59Co QCT signals recorded over different temperatures and at multiple magnetic fields allowed determination of both the 59Co quadrupole coupling constant and chemical shift anisotropy for each of the three cobalamins. We successfully applied the 59Co QCT NMR approach to monitor in situ the transformation of CNCbl to its “base off” form in the presence of KCN. We further discovered that, to obtain the maximum QCT signal intensity with the Hahn‐echo sequence, a strong B1 field should be used for the first 90° pulse, but a weak B1 field for the second 180° pulse. The reported 59Co QCT NMR methodology opens up a new direction for studying structure and function of cobalamin compounds and their roles in biological processes.
An Efficient Cell Sorting Protocol for Maize Protoplasts
Authors: Ortiz‐Ramírez Carlos , Arevalo Edgar Demesa , Xu Xiaosa , Jackson David P. , Birnbaum Kenneth D. 
Published: August 2018

AbstractMaize is one the most widely cultivated crops worldwide and an important model system for the study of genetics and cytogenetics. Although the availability of a genome sequence has enabled new quantitative genomic studies, developing methods to isolate specific types of cells will enable useful approaches for transcriptomic analysis in the crop plant. Fluorescence‐activated cell sorting (FACS) is a powerful technique for cell isolation and the study of transcriptional profiles from specific cell populations. The use of FACS on plant cells requires the generation of protoplasts by tissue digestion and cell wall removal. Although some protocols are available, they mainly focus on dicot species and obtaining sufficient protoplasts from inner tissue layers has been challenging in both monocots and dicots. Here, we report a new protocol that dramatically increases protoplast yield from maize for subsequent cell isolation by FACS. This protocol is efficient in generating protoplasts from root and shoot inner layers and can also be applied successfully to Arabidopsis thaliana. © 2018 by John Wiley & Sons, Inc.
Women in top positions on boards of directors: Gender policies disclosed in Italian sustainability reporting
Authors: Furlotti Katia , Mazza Tatiana , Tibiletti Veronica , Triani Silvia 
Published: August 2018

AbstractInspired by the promotion of gender balance on boards of directors of listed companies in Europe, this study seeks to understand whether the presence of women with different responsibilities is associated with gender policies disclosed in corporate social responsibility or sustainability reports. Using the data of listed companies in Italy, we find a positive association between the presence of women in the role of chairperson and the implementation with disclosure of gender policies. Consistent with gender self‐schema, women believe in their values, and pay attention to conflict management when they are in the position of chairperson. We find different results when the women are in the position of chief executive officer (CEO). The position of CEO is usually a male job and our results show a non‐significant perception of female problems when a woman occupies the CEO position. This study contributes to corporate social responsibility analysis of the reporting of gender policies.
Reversing the lens: Why corporate social responsibility is not community development
Authors: McLennan Sharon , Banks Glenn 
Published: August 2018

AbstractCorporate activities have impacts on different groups across societies, and businesses therefore have different sets of responsibilities to these groups. These are increasingly being addressed through corporate social responsibility (CSR) and corporate community development (CCD) initiatives, and there is now a wide body of literature that highlights the value of CSR for business. However, less attention has been paid to understanding the impacts of these activities from the perspective of communities. This paper “reverses the lens” to explore these community perspectives. We argue that communities see and evaluate CSR/CCD in terms of the broader immanent effects of the corporate presence rather than simply the intentional CSR programs and prioritize relationships over material outcomes. We outline an agenda for corporations that begins with the realization that core business practices can impact profoundly on long‐term community development and that effective contributions require corporations to “embrace chaos” and to develop the types of relationships that foreground community goals and priorities.
Ni(OH)2‐WP Hybrid Nanorod Arrays for Highly Efficient and Durable Hydrogen Evolution Reactions in Alkaline Media
Authors: Kim Dokyoung , Park Jinkyu , Lee Jinwoo , Zhang Zhuo , Yong Kijung 
Published: August 2018

AbstractThe development of efficient non‐noble‐metal hydrogen evolution electrocatalysts in alkaline media is crucial for sustainable, ecofriendly production of H2 through water electrolysis. An alkaline hydrogen evolution reaction (HER) catalyst composed of Ni(OH)2‐decorated thungsten phosphide (WP) nanorod arrays on carbon paper was synthesized by thermal evaporation and electrodeposition. This hybrid catalyst displayed outstanding HER activity and required a low overpotential of only 77 mV to obtain a current density of 10 mA cm−2 and a Tafel slope of 71 mV dec−1. The hybrid catalyst also showed long‐term electrochemical stability, maintaining its activity for 18 h. This improved HER efficiency was attributed to the synergetic effect of WP and Ni(OH)2: Ni(OH)2 effectively lowers the energy barrier during water dissociation and also provides active sites for hydroxyl adsorption, whereas WP adsorbs hydrogen intermediates and efficiently produces H2 gas. This interfacial cooperation offers not only excellent HER catalytic activity but also new strategies for the fabrication of effective non‐noble‐metal‐based electrocatalysts in alkaline media.
Study of metabolic activity of human embryos focused on amino acids by capillary electrophoresis with light‐emitting diode‐induced fluorescence detection
Authors: Celá Andrea , Mádr Aleš , Ješeta Michal , Žáková Jana , Crha Igor , Glatz Zdeněk 
Published: August 2018

AbstractAssisted reproduction is a quickly developing field of reproductive medicine whose importance is growing every year due to the increasing number of patients suffering from infertility. As a result, there is a need for the continuous development and/or improvement of assisted reproductive technologies. This paper presents a new method for the in vitro measurement of the amino acid turnover of developing embryos based on capillary electrophoresis with light‐emitting diode‐induced fluorescence detection. Amino acids were derivatized with naphthalene‐2,3‐dicarboxaldehyde/NaCN, and the resulting fluorescent derivatives were baseline resolved within 25 min in a background electrolyte comprised of 50 mM sodium tetraborate, 73 mM sodium dodecyl sulphate, 5 mM sodium deoxycholate and 2.5 mM (2‐hydroxypropyl)‐β‐cyclodextrin (pH ≈ 9.3). The migration time and the peak area repeatability (n = 10) were below 0.5 and 4.3%, respectively. The limits of detection ranged from 12.6 nM (histidine) to 39.3 nM (taurine). The developed method, which only requires 2 μL of raw sample, was successfully applied for determining the metabolic activity of human embryos exposed to different environmental stress conditions.
Benchmark dataset for mid‐price forecasting of limit order book data with machine learning methods
Authors: Ntakaris Adamantios , Magris Martin , Kanniainen Juho , Gabbouj Moncef , Iosifidis Alexandros 
Published: August 2018

AbstractManaging the prediction of metrics in high‐frequency financial markets is a challenging task. An efficient way is by monitoring the dynamics of a limit order book to identify the information edge. This paper describes the first publicly available benchmark dataset of high‐frequency limit order markets for mid‐price prediction. We extracted normalized data representations of time series data for five stocks from the Nasdaq Nordic stock market for a time period of 10 consecutive days, leading to a dataset of ∼4,000,000 time series samples in total. A day‐based anchored cross‐validation experimental protocol is also provided that can be used as a benchmark for comparing the performance of state‐of‐the‐art methodologies. Performance of baseline approaches are also provided to facilitate experimental comparisons. We expect that such a large‐scale dataset can serve as a testbed for devising novel solutions of expert systems for high‐frequency limit order book data analysis.
Clonal evolution analysis of paired anaplastic and well‐differentiated thyroid carcinomas reveals shared common ancestor
Authors: Dong Weilai , Nicolson Norman G. , Choi Jungmin , Barbieri Andrea L. , Kunstman John W. , Abou Azar Sara , Knight James , Bilguvar Kaya , Mane Shrikant M. , Lifton Richard P. , Korah Reju , Carling Tobias 
Published: August 2018

AbstractFoci of papillary or follicular thyroid carcinoma are frequently noted in thyroidectomy specimens of anaplastic thyroid carcinoma (ATC). However, whether ATCs evolve from these co‐existing well‐differentiated thyroid carcinomas (WDTCs) has not been well‐understood. To investigate the progression of ATC in patients with co‐existing WDTCs, five ATC tumors with co‐existing WDTCs and matching normal tissues were whole‐exome sequenced. After mapping the somatic alteration landscape, evolutionary lineages were constructed by sub‐clone analysis. Though each tumor harbored at least some unique private mutations, all five ATCs demonstrated numerous overlapping mutations with matched WDTCs. Clonal analysis further demonstrated that each ATC/WDTC pair shared a common ancestor, with some pairs diverging early in their evolution and others in which the ATC seems to arise directly from a sub‐clone of the WDTC. Though the precise lineal relationship remains ambiguous, based on the genetic relationship, our study clearly suggests a shared origin of ATC and WDTC.
Cognitive ability is associated with changes in the functional organization of the cognitive control brain network
Authors: A. Breukelaar Isabella , Williams Leanne M. , Antees Cassandra , Grieve Stuart M. , Foster Sheryl L. , Gomes Lavier , Korgaonkar Mayuresh S. 
Published: August 2018

AbstractCognitive control is one of the most important skills in day‐to‐day social and intellectual functioning but we are yet to understand the neural basis of the group of behaviors required to carry this out. Here, we probed changes over time in the brain network associated with cognitive control (the dorsolateral prefrontal cortex, the dorsal posterior parietal cortex, and the dorsal anterior cingulate cortex) using both behavioral assays and functional brain imaging during a selective working memory task in 69 healthy participants within the age range 18–38 years (mean: 25, SD: ±6), assessed twice, 2 years apart. We aimed to explore the relationship of changing network activation and connectivity with behavioral tasks associated with cognitive control in this otherwise neurodevelopmentally stable group. We found that increased connectivity between frontoparietal cognitive control network regions during the working memory task was associated with improved memory and executive functions over the 2‐year period and that this association was not impacted by age, gender, or baseline performance. These results provide evidence that changes in the functional organization of the cognitive control brain network occur despite the absence of neurodevelopment, aging or targeted cognitive training effects, and could modulate cognitive performance in early to mid‐adulthood. Understanding how and why this change is occurring could provide insights into the mechanisms through which cognitive control ability is cultivated over time. This could aid in the development of interventions in cases where cognitive control is impaired.
Modulating factors of hydrologic exchanges in a large‐scale river reach: Insights from three‐dimensional computational fluid dynamics simulations
Authors: Bao Jie , Zhou Tian , Huang Maoyi , Hou Zhangshuan , Perkins William , Harding Samuel , Titzler Scott , Hammond Glenn , Ren Huiying , Thorne Paul , Suffield Sarah , Murray Christopher , Zachara John 
Published: August 2018

AbstractHydrologic exchange is a critical mechanism that shapes hydrological and biogeochemical processes along a river corridor. Because of limitations in field accessibility, computational demand, and complexities of geomorphology and subsurface geology, full three‐dimensional modelling studies to quantify hydrologic exchange fluxes (HEFs) have been limited mostly to local‐scale applications. At reach scales, although surface flow conditions and subsurface physical properties are well‐known factors that modulate hydrologic exchanges, quantitative measures that can describe the effects of these factors on the strength and direction of such exchanges do not exist. To address this issue, we developed a one‐way coupled surface and subsurface water flow model using the commercial computational fluid dynamics (CFD) software STAR‐CCM+ and applied it to simulate HEFs in a 7‐km long reach along the main stem of the Columbia River in the United States. The model was validated against flow velocity measurements from an acoustic Doppler current profiler in the river, vertical HEFs estimated from a set of temperature profilers installed across the riverbed, and simulations from a reactive transport model. The validated model then was employed to systematically investigate how HEFs could be influenced by surface water fluid dynamics, subsurface structures, and hydrogeological properties. Our results suggest that reach‐scale HEFs are dominated primarily by the thickness of the riverbed alluvium layer, and then by the alluvium permeability, the depth of the underlying impermeable layer, and the pressure boundary condition. Our results also elucidate the scale dependence of HEFs on fluid dynamics that can be captured only by three‐dimensional CFD models. That is, while the net HEFs over the entire 7‐km domain are not significantly influenced by surface water dynamics pressure, the dynamic pressure induced by fluid dynamics can lead to more than 15% in net HEFs for a river section of a few hundred metres.
Enantioselective monitoring of chiral fungicide famoxadone enantiomers in tomato, apple, and grape by chiral liquid chromatography with tandem mass spectrometry
Authors: Xu Guofeng , Jia Xiaohui , Wu Xiaohu , Xu Jun , Liu Xingang , Pan Xinglu , Li Runan , Li Xinghai , Dong Fengshou 
Published: August 2018

AbstractFamoxadone is a widely used chiral fungicide on tomato, apple, and grape. But it is still being employed as a racemic mixture without distinguishing the difference between enantiomers, which often leads to its inaccurate risk assessment. In this study, a rapid, sensitive, and reliable chiral analytical method was developed for famoxadone enantiomers by ultra high performance liquid chromatography/tandem mass spectrometry, optimal separation condition was achieved with Lux Amylose‐1 column using acetonitrile/water (70:30, v/v) as mobile phase at 0.3 mL/min in 6 min. The average recoveries for two enantiomers in all of the matrices at three spiking levels ranged from 89.8 to 109.4%, with relative standard deviation less than 9.5%. The limits of quantification for all enantiomers in tomato, apple, and grape were not more than 4 μg/kg. And the proposed method was successfully applied to investigate the enantioselective degradation of famoxadone enantiomers in tomato, apple, and grape. The data showed that S‐(+)‐famoxadone was preferentially degraded comparing to the R‐(−)‐famoxadone in tomato, apple, and grape. The potential reasons of the enantioselective behavior were also discussed. This study could help in better understanding the environmental fate of famoxadone and the rational use of chiral pesticide in agricultural production.
Spatial impacts assessment of tourism and territorial capital: A modelling study on regional development in Europe
Authors: Romão João , Nijkamp Peter 
Published: August 2018

AbstractEconomic growth, tourism dynamics, and territorial capital in European regions are analysed during a period comprising a first stage of economic growth, negative impacts of the crisis of 2008, and recovery. A spatial econometric model inspired by the endogenous growth approach shows positive spatial spillovers, convergence between regions, positive impacts on growth from innovation‐related characteristics, and gross value added by tourism, whereas no relevant impacts from tourism demand or employment and a negative correlation with the endowment in natural resources are found. The discussion is framed by an evolutionary economic geography conceptualization with a view on smart specialization strategies.