bluuebunny/crossref_metadata_2025_split huggingface dataset:
Global Benchmark Values for Laparoscopic Roux-en-Y-Gastric Bypass: a Potential New Indicator of the Surgical Learning Curve
Authors: Giudicelli Guillaume , Diana Michele , Chevallay Mickael , Blaser Benjamin , Darbellay Chloé , Guarino Laetitia , Jung Minoa K. , Worreth Marc , Gero Daniel , Saadi Alend 
Published: October 2020

Abstract
Background
Laparoscopic Roux-en-Y gastric bypass (LRYGB) is a technically demanding procedure. The learning curve of LRYGB is challenging and potentially associated with increased morbidity. This study evaluates whether a general laparoscopic surgeon can be safely trained in performing LRYGB in a peripheral setting, by comparing perioperative outcomes to global benchmarks and to those of a senior surgeon.

Methods
All consecutive patients undergoing primary LRYGB between January 2014 and December 2017 were operated on by a senior (A) or a trainee (B) bariatric surgeon and were prospectively included. The main outcome of interest was all-cause morbidity at 90 days. Perioperative outcomes were compared with global benchmarks pooled from 19 international high-volume centers and between surgeons A and B for their first and last 30 procedures.

Results
The 213 included patients had a mean all-cause morbidity rate at 90 days of 8% (17/213). 95.3% (203/213) of the patients were uneventfully discharged after surgery. Perioperative outcomes of surgeon B were all within the global benchmark cutoffs. Mean operative time for the first 30 procedures was significantly shorter for surgeon A compared with surgeon B, with 108.6 min (± 21.7) and 135.1 min (± 28.1) respectively and decreased significantly for the last 30 procedures to 95 min (± 33.7) and 88.8 min (± 26.9) for surgeons A and B respectively.

Conclusion
Training of a new bariatric surgeon did not increase morbidity and operative time improved for both surgeons. Perioperative outcomes within global benchmarks suggest that it may be safe to teach bariatric surgery in peripheral setting.
An Efficient Acoustic Scattering Model Based on Target Surface Statistical Descriptors for Synthetic Aperture Sonar Systems
Authors: Nadimi Nahid , Javidan Reza , Layeghi Kamran 
Published: October 2020

AbstractAcoustic scattering as the perturbation of an incident acoustic field from an arbitrary object is a critical part of the target-recognition process in synthetic aperture sonar (SAS) systems. The complexity of scattering models strongly depends on the size and structure of the scattered surface. In accurate scattering models including numerical models, the computational cost significantly increases with the object complexity. In this paper, an efficient model is proposed to calculate the acoustic scattering from underwater objects with less computational cost and time compared with numerical models, especially in 3D space. The proposed model, called texture element method (TEM), uses statistical and structural information of the target surface texture by employing non-uniform elements described with local binary pattern (LBP) descriptors by solving the Helmholtz integral equation. The proposed model is compared with two other well-known models, one numerical and other analytical, and the results show excellent agreement between them while the proposed model requires fewer elements. This demonstrates the ability of the proposed model to work with arbitrary targets in different SAS systems with better computational time and cost, enabling the proposed model to be applied in real environment.
Psychological Preparation for Cardiac Surgery
Authors: Salzmann Stefan , Salzmann-Djufri Miriam , Wilhelm Marcel , Euteneuer Frank 
Published: October 2020

AbstractPurpose of ReviewTo review the current state of preoperative psychological preparation to improve outcomes after cardiac surgery.Recent FindingsPreoperative psychosocial factors are associated with short- and long-term outcomes after cardiac surgery. There are several approaches to optimize patients’ preoperative psychological status with promising effects on postoperative outcomes (e.g., less complications, improved quality of life). Preoperative psychological preparation often aims to improve patients’ knowledge or social support and to modify and optimize expectations and illness beliefs.SummaryPreoperative psychological preparation is gaining importance for cardiac surgery. However, patients’ psychological status still does not get as much attention as it deserves. Preoperative psychological preparation seems to have positive effects on postoperative outcomes. Since overall evidence is still weak, further studies are warranted to understand which intervention works best for whom and why.
C. Wright Mills’ The Sociological Imagination and the Construction of Talcott Parsons as a Conservative Grand Theorist
Authors: Staubmann Helmut 
Published: October 2020

AbstractC. Wright Mills was one of the most important critics of Talcott Parsons who succeeded in establishing the image of Parsons as a conservative “grand theorist” out of touch with the real world and its real problems, as passed on in sociological textbooks. In this essay, it is argued that Mills’ “translation of Parsons into English” is a one-sided interpretation based on his own theoretical premises, which he called the sociological imagination. The way Mills conceptualized sociological imagination leans towards an ideological world-view with political ambitions but lacks the necessary theoretical differentiation for an adequate evaluation of Parsons’ general theory of action and the conceptualization of the social system in particular. Given Mills’ premises, it appeared to him as if Parsons could not deal with social conflict, social change, domination and power relationships, which laid the foundations of a narrative quite distinct from the “real” Parsons. The conceptual deficiencies of Mills’ sociological imagination lead into theoretical antinomies and the practical inability to resolve political issues outside of forceful intervention as suggested in the theoretical tradition of Thomas Hobbes. Independent of a political positioning, Parsons’ sophistications in his understanding of power as one of several generalized symbolic media of interaction beyond the Hobbesian utilitarian model are necessary to come to terms with the increased complexity of modern society, both in theoretical and in political terms.
Remarkable Role of Experimental Olefin-Maleic-Anhydride Copolymer Based Compatibilizing Additives in Blends of Waste PET Bottles and Polyamide
Authors: Nagy B. , Varga C. S. , Kontos K. , Simon-Stőger L. 
Published: October 2020

Abstract
Over the past 50 years demand for plastics drastically increased worldwide resulting in plastic wastes causing serious environmental problems. The main market sector of European plastics industry is the packaging industry most of which are polyolefins and poly(ethylene-terephtalate). In the EU, 29.1 million tonnes of plastic waste were collected in 2018, of which 32.5% was recycled, 42.6% was recovered for energy, and 24.9% was landfilled (Plastics-the Facts, 2019). Although landfilling of collected waste in the EU is steadily declining, there is still too much unused waste. Polymer blends based on waste resources can solve the issues of recycling. The main purpose of the research was to produce polymer blends from waste based PET that have appropriate mechanical properties and rheological behaviour as well in order to find application areas where product requirements are not strict. Blends containing waste based PET were extrusion moulded and calenderd producing extrusion strings and films. Rheological and tensile properties of three types of PET/engineering thermoplastic blends (PET/PC, PET/PA and PET/ABS) were studied. Miscibility of components of the blends is limited leading to weak mechanical properties such as low tensile strength and/or elongation at break. Due to that phenomenon compatibilizing additives are also required. As compatibilizing additives olefin-maleic-anhydride copolymer based additives have been used in our experiments. Structure of additives differed from each other both in ratio and length of carbon chains of compounds linked to maleic-anhydride groups. Blends have been studied with PET content ranging from 10 to 90%. As an outstanding result improving of mechanical properties was achieved, for example almost 40% growth was observed in elongation at break of extruded 80/20 PET/PA blends in the presence of 0.2% compatibilizing additive compared to the sample without additive, meanwhile its strength has also improved.

Graphic Abstract
Effect of temperature shifts and anammox biomass immobilization on sequencing batch reactor performance and bacterial genes abundance
Authors: Banach-Wiśniewska A. , Ćwiertniewicz-Wojciechowska M. , Ziembińska-Buczyńska A. 
Published: October 2020

AbstractImplementation of anaerobic ammonium oxidation (anammox) below its optimal temperature, known as “cold anammox”, may lead to its common use in wastewater treatment plants, reducing the operational costs of wastewater treatment. Thus, we investigated the effects of immobilization in polyvinyl alcohol–sodium alginate gel beads on anammox performance at temperatures of 30 °C, 23 °C, and 15 °C in laboratory-scale sequencing batch reactors. We determined the relative gene abundance of the nitrogen removal bacterial groups, which are considered as the key functional microbes of nitrogen cycle in activated sludge: denitrifies, ammonia-oxidizing bacteria, nitrite-oxidizing bacteria, and anammox bacteria. Nitrogen removal efficiency was higher for immobilized anammox sludge in comparison with non-immobilized anammox biomass at each investigated temperature. At 30 °C, nitrogen removal efficiency was 83.7 ± 6.46% for immobilized reactor, and 79.4 ± 7.83% for the control reactor, while at 15 °C was remained at the level of 50 ± 2.5% for immobilized reactor, and fluctuated from 13.2 to 45.3% for the control one. During temperature shifts, the process was also more stable in the case of the reactor with immobilized biomass. A statistically significant correlation was found between nitrogen removal efficiency and hydrazine oxidoreductase gene abundance.
High-entropy (Nd0.2Sm0.2Eu0.2Y0.2Yb0.2)4Al2O9 with good high temperature stability, low thermal conductivity, and anisotropic thermal expansivity
Authors: Zhao Zifan , Xiang Huimin , Chen Heng , Dai Fu-Zhi , Wang Xiaohui , Peng Zhijian , Zhou Yanchun 
Published: October 2020

AbstractThe critical requirements for the environmental barrier coating (EBC) materials of silicon-based ceramic matrix composites (CMCs) include good tolerance to harsh environments, thermal expansion matches with the interlayer mullite, good high-temperature phase stability, and low thermal conductivity. Cuspidine-structured rare-earth aluminates RE4Al2O9 have been considered as candidates of EBCs for their superior mechanical and thermal properties, but the phase transition at high temperatures is a notable drawback of these materials. To suppress the phase transition and improve the phase stability, a novel cuspidine-structured rare-earth aluminate solid solution (Nd0.2Sm0.2Eu0.2Y0.2Yb0.2)4Al2O9 was designed and successfully synthesized inspired by entropy stabilization effect of high-entropy ceramics (HECs). The as-synthesized HE (Nd0.2Sm0.2Eu0.2Y0.2Yb0.2)4Al2O9 exhibits a close thermal expansion coefficient (6.96×10-6 K-1 at 300–1473 K) to that of mullite, good phase stability from 300 to 1473 K, and low thermal conductivity (1.50 W·m–1·K–1 at room temperature). In addition, strong anisotropic thermal expansion has been observed compared to Y4Al2O9 and Yb4Al2O9. The mechanism for low thermal conductivity is attributed to the lattice distortion and mass difference of the constituent atoms, and the anisotropic thermal expansion is due to the anisotropic chemical bonding enhanced by the large size rare-earth cations.
Role of in-situ formed free carbon on electromagnetic absorption properties of polymer-derived SiC ceramics
Authors: Yu Zhaoju , Lv Xuan , Mao Kangwei , Yang Yujing , Liu Anhua 
Published: October 2020

AbstractIn order to enhance dielectric properties of polymer-derived SiC ceramics, a novel single-source-precursor was synthesized by the reaction of an allylhydrido polycarbosilane (AHPCS) and divinyl benzene (DVB) to form carbon-rich SiC. As expected, the free carbon contents of resultant SiC ceramics annealed at 1600 °C are significantly enhanced from 6.62 wt% to 44.67 wt%. After annealing at 900–1600 °C, the obtained carbon-rich SiC ceramics undergo phase separation from amorphous to crystalline feature where superfine SiC nanocrystals and turbostratic carbon networks are dispersed in an amorphous SiC(O) matrix. The dielectric properties and electromagnetic (EM) absorption performance of as-synthesized carbon-rich SiC ceramics are significantly improved by increasing the structural order and content of free carbon. For the 1600 °C ceramics mixed with paraffin wax, the minimum reflection coefficient (RCmin) reaches –56.8 dB at 15.2 GHz with the thickness of 1.51 mm and a relatively broad effective bandwidth (the bandwidth of RC values lower than –10 dB) of 4.43 GHz, indicating the excellent EM absorption performance. The carbon-rich SiC ceramics have to be considered as harsh environmental EM absorbers with excellent chemical stability, high temperature, and oxidation and corrosion resistance.
Free Circulation of Information and Online Intermediaries – Replacing One “Value Gap” with Another
Authors: Moscon Valentina 
Published: October 2020

AbstractThe role of online intermediaries in allowing third parties to perform legal as well as illegal activities and the growing economic power of such intermediaries are profoundly challenging the legal framework established 20 years ago with the European Union e-Commerce Directive. European courts first, and legislatures more recently, have taken a position regarding the need for further regulation of online intermediaries. The new liability rules for copyright infringement are just an example of a more general tendency to charge intermediaries with responsibility. This tendency goes beyond the realm of intellectual property and includes consumer law, antitrust and competition law. The forthcoming EU Digital Services Act aims to revise the regulation of online intermediaries by means of new rules framing the responsibilities of digital services and online platforms’ market behaviour.In this context there is no doubt that the current scenario requires modern rules. However, it is licit to ask whether and how European institutions are considering the collateral effects of the above-mentioned tendency. It is also not clear how the basic principles underpinning the e-Commerce Directive – and, in particular, freedom of expression – will be assured in a new legal framework where online intermediaries may not enjoy the safe harbours originally laid down in the e-Commerce Directive.
A retrospective chart review study of symptom onset, diagnosis, comorbidities, and treatment in patients with binge eating disorder in Canadian clinical practice
Authors: Gill Simerpal K. , Kaplan Allan S. 
Published: October 2020

Abstract
Purpose
In the Canadian healthcare setting, there is limited understanding of the pathways to diagnosis and treatment for patients with binge eating disorder (BED).

Methods
This retrospective chart review examined the clinical characteristics, diagnostic pathways, and treatment history of adult patients diagnosed with BED.

Results
Overall, 202 charts from 57 healthcare providers (HCPs) were reviewed. Most patients were women (69%) and white (78%). Mean ± SD patient age was 37 ± 12.1 years. Comorbidities identified in > 20% of patients included obesity (50%), anxiety (49%), depression and/or major depressive disorder (46%), and dyslipidemia (26%). Discussions regarding a diagnosis of BED were typically initiated more often by HCPs than patients. Most patients (64%) received a diagnosis of BED ≥ 3 years after symptom onset. A numerically greater percentage of patients received (past or current) nonpharmacotherapy than pharmacotherapy (84% vs. 67%). The mean ± SD number of binge eating episodes/week numerically decreased from pretreatment to follow-up with lisdexamfetamine (5.4 ± 2.8 vs. 1.7 ± 1.2), off-label pharmacotherapy (4.7 ± 3.9 vs. 2.0 ± 1.13), and nonpharmacotherapy (6.3 ± 4.8 vs. 3.5 ±  6.0) Across pharmacotherapies and nonpharmacotherapies, most patients reported improvement in symptoms of BED (84–97%) and in overall well-being (80–96%).

Conclusions
These findings highlight the importance of timely diagnosis and treatment of BED. Although HCPs are initiating discussions about BED, earlier identification of BED symptoms is required. Furthermore, these data indicate that pharmacologic and nonpharmacologic treatment for BED is associated with decreased binge eating and improvements in overall well-being.

Level of evidence
IV, chart review.
Carbon nanotubes and their polymeric composites: the applications in tissue engineering
Authors: Huang Boyang 
Published: October 2020

AbstractCarbon nanotubes (CNTs), with unique graphitic structure, superior mechanical, electrical, optical and biological properties, has attracted more and more interests in biomedical applications, including gene/drug delivery, bioimaging, biosensor and tissue engineering. In this review, we focus on the role of CNTs and their polymeric composites in tissue engineering applications, with emphasis on their usages in the nerve, cardiac and bone tissue regenerations. The intrinsic natures of CNTs including their physical and chemical properties are first introduced, explaining the structure effects on CNTs electrical conductivity and various functionalization of CNTs to improve their hydrophobic characteristics. Biosafety issues of CNTs are also discussed in detail including the potential reasons to induce the toxicity and their potential strategies to minimise the toxicity effects. Several processing strategies including solution-based processing, polymerization, melt-based processing and grafting methods are presented to show the 2D/3D construct formations using the polymeric composite containing CNTs. For the sake of improving mechanical, electrical and biological properties and minimising the potential toxicity effects, recent advances using polymer/CNT composite the tissue engineering applications are displayed and they are mainly used in the neural tissue (to improve electrical conductivity and biological properties), cardiac tissue (to improve electrical, elastic properties and biological properties) and bone tissue (to improve mechanical properties and biological properties). Current limitations of CNTs in the tissue engineering are discussed and the corresponded future prospective are also provided. Overall, this review indicates that CNTs are promising “next-generation” materials for future biomedical applications.
Effects of Bio-Based Plasticizers, Made From Starch, on the Properties of Fresh and Hardened Metakaolin-Geopolymer Mortar: Basic Investigations
Authors: Tutal Adrian , Partschefeld Stephan , Schneider Jens , Osburg Andrea 
Published: October 2020

AbstractConventional superplasticizers based on polycarboxylate ether (PCE) show an intolerance to clay minerals due to intercalation of their polyethylene glycol (PEG) side chains into the interlayers of the clay mineral. An intolerance to very basic media is also known. This makes PCE an unsuitable choice as a superplasticizer for geopolymers. Bio-based superplasticizers derived from starch showed comparable effects to PCE in a cementitious system. The aim of the present study was to determine if starch superplasticizers (SSPs) could be a suitable additive for geopolymers by carrying out basic investigations with respect to slump, hardening, compressive and flexural strength, shrinkage, and porosity. Four SSPs were synthesized, differing in charge polarity and specific charge density. Two conventional PCE superplasticizers, differing in terms of molecular structure, were also included in this study. The results revealed that SSPs improved the slump of a metakaolin-based geopolymer (MK-geopolymer) mortar while the PCE investigated showed no improvement. The impact of superplasticizers on early hardening (up to 72 h) was negligible. Less linear shrinkage over the course of 56 days was seen for all samples in comparison with the reference. Compressive strengths of SSP specimens tested after 7 and 28 days of curing were comparable to the reference, while PCE led to a decline. The SSPs had a small impact on porosity with a shift to the formation of more gel pores while PCE caused an increase in porosity. Throughout this research, SSPs were identified as promising superplasticizers for MK-geopolymer mortar and concrete.
A noveln-3 glyceride mixture enhances enrichment of EPA and DHA after single dosing in healthy older adults: results from a double-blind crossover trial
Authors: Fisk Helena L. , Kindberg Grete M. , Hustvedt Svein O. , Calder Philip C. 
Published: October 2020

AbstractA glyceride mixture of monoglyceride, diglyceride and TAG increases solubilisation and enhances emulsification ofn-3 fatty acid (FA)-containing lipids in the stomach. This allows for better access of digestive enzymes, pivotal for the release of bioactiven-3 FA. The objective was to compare the effect of a glyceride formulation and an ethyl ester formulation of EPA + DHA on concentrations of EPA and DHA in plasma following single dosing. We conducted a double-blind crossover trial in which twenty healthy adults aged 50–70 years consumed a single dose (2·8 g EPA + DHA) of each EPA + DHA formulation without a meal in random order separated by a 2-week washout period. EPA and DHA were measured in plasma total lipid over the following 12 h. EPA and DHA in plasma total lipid increased over 12 h with both formulations. A 10-fold greater Δ concentration of EPA, 3-fold greater Δ concentration of DHA and 5-fold greater Δ concentration of EPA + DHA were seen with the glyceride-EPA + DHA. The time at which the maximal concentrations ofn-3 FA occurred was 4 h earlier for EPA, 1 h earlier for DHA and 2 h earlier for EPA + DHA when consuming glyceride-EPA + DHA. A mixture of monoglyceride, diglyceride and TAG results in greater and faster incorporation of EPA and DHA into blood plasma lipid in the absence of a fatty meal. This may provide benefit to individuals on a low-fat diet or with digestive impairments and could result in greater efficacy in clinical trials usingn-3 FA.
Hinnandhinn: Early Icelandic as the clue to the history and etymology of two Old Scandinavian words
Authors: Stroh-Wollin Ulla 
Published: October 2020

ABSTRACTThe history and etymology of Old Scandinavianhinnis a disputed matter. One question concerns whetherhinnas a contrastive demonstrative indicating ‘the other (one)/the former (one)’ andhinnas a pre-adjectival article, both of which to some extent are still found in present-day Icelandic, are related or not. Another issue concerns the fact thathinnhas no immediate parallel in Germanic outside Scandinavia, which has led scholars to assume that it is a Proto-Scandinavian innovation. This paper argues that Old Scandinavian possessed twohinnwords with separate backgrounds, one stemming directly from an anciently inherited distal demonstrative, and one from an innovated proximal demonstrative. However, the innovation was no more founded on common Germanic material than the formerhinnwas. Instead, it arose from the reinforcement of an ancient precursor. This precursor is traceable in early Icelandicenn, which was used as a pre-adjectival article and as a primitive post-nominal definiteness marker.
Infantile dilated cardiomyopathy due to congenital left main coronary ostial stenosis
Authors: Doyle Jacqueline , Churchill Tammy , Chowdhury Shahryar M. 
Published: October 2020

AbstractAlthough a rare form of congenital heart disease, anomalies of the coronary arteries can present as heart failure in infants. The most common lesion is an anomalous left coronary artery arising from the pulmonary artery, but other abnormalities can present similarly. This case is an infant who is found to have left coronary ostial stenosis causing dilated cardiomyopathy.