bluuebunny/crossref_metadata_2025_split huggingface dataset:
A boundary Schwarz lemma for mappings from the unit polydisc to irreducible bounded symmetric domains
Authors: Hamada Hidetaka , Kohr Gabriela 
Published: May 2020

AbstractIn this paper, we obtain a boundary Schwarz lemma for C1 (pluriharmonic, holomorphic) mappings from the unit polydisc in to irreducible bounded symmetric domains realized as the unit ball of an N‐dimensional simple JB*‐triple X. In particular, we obtain a version of the boundary Schwarz lemma for C1 (pluriharmonic, holomorphic) mappings from into the Euclidean unit ball in . These results are generalizations of recent results regarding boundary Schwarz lemma in higher dimensions.
Biorthogonal multiwavelets on the interval for solving multidimensional fractional optimal control problems with inequality constraint
Authors: Ashpazzadeh Elmira , Lakestani Mehrdad , Yildirim Ahmet 
Published: May 2020

SummaryThis article proposes a new numerical approach for solving fractional optimal control problems including state and control inequality constraints using new biorthogonal multiwavelets. The properties of biorthogonal multiwavelets are first given. The Riemann‐Liouville fractional integral operator for biorthogonal multiwavelets is utilized to reduce the solution of optimal control problems to a nonlinear programming one, to which existing, well‐developed algorithms may be applied. In order to save the memory requirement and computation time, a threshold procedure is applied to obtain algebraic equations. The method is computationally very attractive and gives very accurate results.
The STEM grading penalty: An alternative to the “leaky pipeline” hypothesis
Authors: Witteveen Dirk , Attewell Paul 
Published: May 2020

AbstractThe low number of baccalaureates in science, technology, engineering, and mathematics (STEM) is often viewed as problematic for the US's economic competitiveness, leading scholars to search for explanations for STEM retention. Our analyses of the Beginning Postsecondary Students Longitudinal Study indicate that the notion of a so‐called “leaky STEM pipeline” out of STEM majors overstates the problem because it neglects the substantial influx into STEM from other majors throughout college. Researchers concerned with STEM retention should focus on a broader defined group of “STEM‐actives”: A combination of freshman students who declared a STEM major or who take a considerable number of STEM credits. Among these students (N = 3,020) we examine the variation in the relatively lower grades that many individuals earn in STEM courses compared to their non‐STEM courses. The size of an undergraduate's “STEM‐grading penalty”—an individual grading disparity—in the first couple of college semesters is significantly associated with the probability of leaving STEM. The influence of this STEM‐penalty on STEM graduation chances is robust to college students’ variation in both general academic achievement and STEM‐specific preparation, thereby eliminating a large portion of the effect due to skills, performance, and selection. Our analyses expands on previous research regarding relative grading conducted within STEM‐fields.
Reviews and Prospectives of Co3O4‐Based Nanomaterials for Supercapacitor Application
Authors: Hu Xinran , Wei Lishuang , Chen Rui , Wu Qingsheng , Li Jiangfeng 
Published: May 2020

AbstractSupercapacitors are considered to be one of the most promising development directions of energy storage systems because of their low cost, environmental protection and high energy density. The performance of supercapacitors is determined with the quality of electrode materials. Co3O4, a kind of electrode material for supercapacitor, has attracted more and more attention in recent years due to its advantages of high theoretical capacity, low cost and natural abundance. In this review, the synthesis and electrochemical properties of Co3O4‐based electrode materials are discussed in detail. Finally, the research and development prospect of Co3O4‐based electrode materials have been discussed.
The Dötz Benzannulation Reaction: A Booming Methodology for Natural Product Synthesis
Authors: Bera Turban , Pandey Kartikey , Ali Rashid 
Published: May 2020

AbstractSince its finding in 1975, the Dötz benzannulation reaction has attracted a great attention of the scientific community as it permits the regio‐controlled construction of functionalised aromatic frameworks from acyclic precursors. In recent years, this beautifully simple yet much powerful technique for the formation of C−C bonds has opened‐up new possibilities in modern synthetic organic chemistry. In this Review, we report the developments in natural products synthesis by employing the Dötz benzannulation as a key transformation. Although, a flow of publications have witnessed a constant progress in this wonderful area of research, but to our best knowledge this is the first review which purely focuses on the applications of the Dötz benzannulation reaction in natural product synthesis. We are assured that this review will act as a promoter in amplifying the applications of the Dötz benzannulation in the domain of synthetic organic chemistry.
Rethinking the Characterization of Nanoscale Field‐Effect Transistors: A Universal Approach
Authors: Byrne Kristopher , Shik Alexander , Wisniewski David , Ruda Harry E. 
Published: May 2020

AbstractStandard methods for calculating transport parameters in nanoscale field‐effect transistors (FETs), namely carrier concentration and mobility, require a linear connection between the gate voltage and channel conductance; however, this is often not the case. One reason often overlooked is that shifts in chemical and electric potential can partially compensate each other, commonly referred to as quantum capacitance. In nanoscale FETs, capacitance is often unmeasurable and an analytical formula is required, which assumes the conducting channel as metallic and common methods of determining threshold voltage no longer couple properly into transport equations. As present and future FET structures become smaller and have increased channel‐gate coupling, this issue will render standard methods impossible to use. This work discusses the validity of common methods of characterization for nanoscale FETs, develops a universal model to determine transport properties by only measuring the threshold voltage of an FET and presents a new parameter to easily classify FETs as either quantum capacitance‐limited or metallic approximated charge transport. Also considered in this work is electrical hysteresis from trap states and, in combination with the proposed universal model, novel techniques are introduced to measure and remove the errors associated with these effects often ignored in literature.
Electron‐Deficient and Quinoid Central Unit Engineering for Unfused Ring‐Based A1–D–A2–D–A1‐Type Acceptor Enables High Performance Nonfullerene Polymer Solar Cells with High Voc and PCE Simultaneously
Authors: Zhang Chao , Song Xin , Liu Kai‐Kai , Zhang Ming , Qu Jianfei , Yang Can , Yuan Gui‐Zhou , Mahmood Asif , Liu Feng , He Feng , Baran Derya , Wang Jin‐Liang 
Published: May 2020

AbstractHere, a pair of A1–D–A2–D–A1 unfused ring core‐based nonfullerene small molecule acceptors (NF‐SMAs), BO2FIDT‐4Cl and BT2FIDT‐4Cl is synthesized, which possess the same terminals (A1) and indacenodithiophene unit (D), coupling with different fluorinated electron‐deficient central unit (difluorobenzoxadiazole or difluorobenzothiadiazole) (A2). BT2FIDT‐4Cl exhibits a slightly smaller optical bandgap of 1.56 eV, upshifted highest occupied molecular orbital energy levels, much higher electron mobility, and slightly enhanced molecular packing order in neat thin films than that of BO2FIDT‐4Cl. The polymer solar cells (PSCs) based on BT2FIDT‐4Cl:PM7 yield the best power conversion efficiency (PCE) of 12.5% with a Voc of 0.97 V, which is higher than that of BO2FIDT‐4Cl‐based devices (PCE of 10.4%). The results demonstrate that the subtle modification of A2 unit would result in lower trap‐assisted recombination, more favorable morphology features, and more balanced electron and hole mobility in the PM7:BT2FIDT‐4Cl blend films. It is worth mentioning that the PCE of 12.5% is the highest value in nonfused ring NF‐SMA‐based binary PSCs with high Voc over 0.90 V. These results suggest that appropriate modulation of the quinoid electron‐deficient central unit is an effective approach to construct highly efficient unfused ring NF‐SMAs to boost PCE and Voc simultaneously.
Biodegradable Nanocomposite with Dual Cell‐Tissue Penetration for Deep Tumor Chemo‐Phototherapy
Authors: Pan Xueting , Li Pengju , Bai Lintao , Ma Junjie , Li Shanshan , Zhang Fengrong , Liu Shuang , Wu Qingyuan , Shen Heyun , Liu Huiyu 
Published: May 2020

AbstractChemo‐phototherapy, as a promising cancer combination therapy strategy, has attracted widespread attention. However, the complex tumor microenvironment restricts the penetration depth of chemo‐phototherapy agents in the tumor region. Here, biodegradable amphiphilic gelatin (AG) wrapped nanocomposite (PRDCuS@AG) composed of doxorubicin and copper sulfide (CuS)‐loaded dendrimer is designed for deep tumor chemo‐phototherapy. PR in PRDCuS@AG represents arginine‐conjugated polyamidoamine dendrimer. PRDCuS@AG can rapidly biodegrade into PRDCuS by matrix metalloproteinases under near‐infrared light irradiation. The resulted PRDCuS harbors dual cell‐tissue penetration ability, which can effectively penetrate deep into the tumor tissue. In particular, PRDCuS@AG achieves photoacoustic imaging‐guided synergistic chemo‐phototherapy with 97% of tumor inhibition rate. Moreover, PRDCuS@AG can further degrade into 3 nm ultrasmall CuS, which can be eliminated from the body after treatment to avoid side effects. This strategy provides an insight that the development of chemo‐phototherapy agents with high penetration ability to overcome the limitation of current deep tumor therapy.
Low‐Energy Facets on CdS Allomorph Junctions with Optimal Phase Ratio to Boost Charge Directional Transfer for Photocatalytic H2 Fuel Evolution
Authors: Zhao Yan , Shao Chengtian , Lin Zhexing , Jiang Shujuan , Song Shaoqing 
Published: May 2020

AbstractLow‐energy facets on CdS allomorph junctions with optimal phase ratio are designed to boost charge directional transfer for photocatalytic H2 fuel evolution. Fermi energy level difference between low‐energy facets as driving force promotes electrons directional transfer to hexagonal CdS(102) facet and holes to cubic CdS(111) facet. The optimal allomorphs CdS presents superior photocatalytic H2 evolution rate of 32.95 mmol g−1 h−1 with release in a large amount of visible H2 bubbles, which is much higher than single‐phase CdS with high‐energy facets and even supports noble metal photocatalysts. This scientific perspective on low‐energy facets of allomorph junctions with optimal phase ratio breaks the long‐held view of pursuing high‐energy crystal surfaces, which will break the understanding on surface structure crystal facet engineering of photocatalytic materials.
Mechanosensitive regulation of stanniocalcin-1 by zyxin and actin-myosin in human mesenchymal stromal cells
Authors: Zonderland Jip , Gomes David B. , Pallada Yves , Moldero Ivan L. , Camarero-Espinosa Sandra , Moroni Lorenzo 
Published: May 2020

Abstract
Stanniocalcin-1 (STC1) secreted by mesenchymal stromal cells (MSCs) has anti-inflammatory functions, reduces apoptosis, and aids in angiogenesis, both in vitro and in vivo. However, little is known about the molecular mechanisms of its regulation. Here, we show that STC1 secretion is increased only under specific cell-stress conditions. We find that this is due to a change in actin stress fibers and actin-myosin tension. Abolishment of stress fibers by blebbistatin and knockdown of the focal adhesion protein zyxin leads to an increase in STC1 secretion. To also study this connection in 3D, where few focal adhesions and actin stress fibers are present, STC1 expression was analyzed in 3D alginate hydrogels and 3D electrospun scaffolds. Indeed, STC1 secretion was increased in these low cellular tension 3D environments. Together, our data show that STC1 does not directly respond to cell stress, but that it is regulated through mechanotransduction. This research takes a step forward in the fundamental understanding of STC1 regulation and can have implications for cell-based regenerative medicine, where cell survival, anti-inflammatory factors, and angiogenesis are critical.
Impact of genetically modified food knowledge, environmental, and food safety concerns on purchase intention of genetically modified food in mediating role of perceived risk: An empirical study in Thailand
Authors: Pattanapomgthorn Jintana , Sutduean Jutamat , Keohavong Bounmy 
Published: May 2020

AbstractWith the increasing population of world, science has stepped into genetically modified (GM) food. This has been innovated not just to increase the quantity of food but to instill the desired characteristics in a natural food item. Yet, many people are not responding to such GM food positively by considering it unnatural and artificial. The purpose of this research is to assess the impact of environmental consciousness, GM food knowledge and food safety concern on purchasing intention of GM food items in the mediating role of perceived risks in Thailand. A questionnaire‐based survey was conducted in this regard from 298 residents of Thailand and the data were then analyzed on SPSS and AMOS. The results of structural equation modeling have proved that environmental consciousness and food safety concerns have significant and positive impact on purchase intention of GM food, but GM food knowledge has insignificant impact. Perceived risk has been found as a significant mediator in the relationship between all independent variables and purchase intention of GM food. The study is unique as impact of GM food knowledge was not seen in the past on purchase intention of GM food while the mediating role of perceived risk was also not tested before. This study will facilitate citizens and tourists of Thailand to decide about GM food for their better health.
Hot spot 19F magnetic resonance imaging of inflammation
Authors: Bouvain Pascal , Temme Sebastian , Flögel Ulrich 
Published: May 2020

AbstractAmong the preclinical molecular imaging approaches, lately fluorine (19F) magnetic resonance imaging (MRI) has garnered significant scientific interest in the biomedical research community, due to the unique properties of fluorinated materials and the 19F nucleus. Fluorine is an intrinsically sensitive nucleus for MRI—there is negligible endogenous 19F in the body and, thus, no background signal which allows the detection of fluorinated materials as “hot spots” by combined 1H/19F MRI and renders fluorine‐containing molecules as ideal tracers with high specificity. In addition, perfluorocarbons are a family of compounds that exhibit a very high fluorine payload and are biochemically as well as physiologically inert. Perfluorocarbon nanoemulsions (PFCs) are well known to be readily taken up by immunocompetent cells, which can be exploited for the unequivocal identification of inflammatory foci by tracking the recruitment of PFC‐loaded immune cells to affected tissues using 1H/19F MRI. The required 19F labeling of immune cells can be accomplished either ex vivo by PFC incubation of isolated endogenous immune cells followed by their re‐injection or by intravenous application of PFCs for in situ uptake by circulating immune cells. With both approaches, inflamed tissues can unambiguously be detected via background‐free 19F signals due to trafficking of PFC‐loaded immune cells to affected organs. To extend 19F MRI tracking beyond cells with phagocytic properties, the PFC surface can further be equipped with distinct ligands to generate specificity against epitopes and/or types of immune cells independent of phagocytosis. Recent developments also allow for concurrent detection of different PFCs with distinct spectral signatures allowing the simultaneous visualization of several targets, such as various immune cell subtypes labeled with these PFCs. Since ligands and targets can easily be adapted to a variety of problems, this approach provides a general and versatile platform for inflammation imaging which will strongly extend the frontiers of molecular MRI.This article is categorized under:
Diagnostic Tools > in vivo Nanodiagnostics and Imaging
Therapeutic Approaches and Drug Discovery > Emerging Technologies
Therapeutic Approaches and Drug Discovery > Nanomedicine for Cardiovascular Disease
Some remarks on the work: On the theory of plastic deformations and the residual stresses caused by them in the material, by H. Hencky, ZAMM 4 (1924), 323–334
Authors: Bruhns Otto T. 
Published: May 2020

AbstractIn this article, the work of H. Hencky: “On the theory of plastic deformations and the residual stresses caused by them in the material” (Zur Theorie plastischer Deformationen und der hierdurch im Material hervorgerufenen Nachspannungen), which he presented in April 1924 at the first International Conference for Applied Mechanics in Delft and which in the same year appeared at ZAMM, is explained, commented on and placed in the context of the further development of plasticity theory.
Influence of a programme for prevention of early childhood caries on early orthodontic treatment needs
Authors: Wagner Yvonne , Knaup I. , Knaup T. J. , Jacobs C. , Wolf M. 
Published: May 2020

AbstractObjectivesThe aim of this prospective birth cohort study was to evaluate the effect of the programme for prevention (PP) of early childhood caries and the resulting need for orthodontic treatment in 8-year-old German children.Material and methodsChildren who had been enrolled in a caries-risk-related recall system with continuous dental care starting at the time of birth (prevention group, PG) were compared with children of the same birth cohort whose parents decided not to participate in the programme (control group, CG). All children (n = 289) participating in the last PP evaluation at the age of 5 years were invited again and examined by blinded clinicians. Dental caries was scored using the WHO diagnostic criteria expanded to d1-level without radiography. Impressions were taken of children with premature tooth loss to analyse space conditions.ResultsTwo hundred twenty-seven children (mean age 8.4 ± 0.6 years; 46.7% female) were examined. Children in the PG (n = 127) showed significantly lower caries prevalence and experience (3.1%, 0.4 ± 1.0 d3–4mft) than children in the CG (37.3%, 3.9 ± 3.5 d3–4mft). Orthodontic analysis found a higher prevalence of premature tooth extraction, followed by a greater extent of space loss in the CG (41.0%; 3.3 ± 4.4 mm) vs. PG (7.9%; 0.4 ± 1.9 mm) and an increase in early orthodontic treatment need (KIG P3, IOTN 5).ConclusionsThe PP was an effective approach for preventing caries-related premature tooth loss in children and conserving relevant arch length.Clinical relevanceChildren who received continuous dental care starting at the time of birth showed better oral health with less premature loss of deciduous teeth and lower need for orthodontic treatment at the age of 8 years.Trial registrationGerman Clinical Trials Register DRKS00003438,https://drks-neu.uniklinik-freiburg.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00003438
Tunnel technique with enamel matrix derivative in addition to subepithelial connective tissue graft compared with connective tissue graft alone for the treatment of multiple gingival recessions: a randomized clinical trial
Authors: Górski Bartłomiej , Górska Renata , Wysokińska-Miszczuk Joanna , Kaczyński Tomasz 
Published: May 2020

Abstract
Objectives
The aim of this study was to compare outcomes of the modified coronally advanced tunnel technique (MCAT) combined with subepithelial connective tissue graft (SCTG) with or without enamel matrix derivative (EMD), in the treatment of gingival recession types 1 and 2.

Materials and methods
A total of 20 patients with 150 multiple gingival recessions (GR) were included in the study. On one side, MCAT was combined with SCTG and EMD (tests), whereas MCAT with SCTG was applied on the contralateral side (controls). Clinical parameters were measured at baseline and 6 months after surgery. Visual analog scales (VAS) and questionnaires were used to assess patient-reported outcomes and the root coverage esthetic score (RES) for professional esthetic evaluation.

Results
MCAT+SCTG+EMD was not superior with regard to root coverage. At 6 months, average root coverage (ARC) was 87.4% for SCTG+EMD-treated and 90.9% for SCTG-treated defects (p = 0.4170). Complete root coverage (CRC) was observed in 86.7% (tests) and 85.3% (controls) of the cases (p = 0.9872). Significantly less pain was reported using VAS (p = 0.0342) post-operatively in the SCTG+EMD group. Professional assessment of esthetic outcomes using RES showed a significant difference (9.25 versus 8.71, p = 0.0103) in favor of the test group.

Conclusions
Both treatment modalities were equally effective in treatment of multiple GR and led to similar improvements in clinical parameters. However, the application of EMD as an adjunct resulted in less post-operative pain and better professionally assessed esthetic outcomes.

Clinical relevance
Patients’ early morbidity and 6-month esthetic outcomes following GR coverage with MCAT might be influenced by means of EMD utilization.
Annotating Argument Schemes
Authors: Visser Jacky , Lawrence John , Reed Chris , Wagemans Jean , Walton Douglas 
Published: May 2020

AbstractArgument schemes are abstractions substantiating the inferential connection between premise(s) and conclusion in argumentative communication. Identifying such conventional patterns of reasoning is essential to the interpretation and evaluation of argumentation. Whether studying argumentation from a theory-driven or data-driven perspective, insight into the actual use of argumentation in communicative practice is essential. Large and reliably annotated corpora of argumentative discourse to quantitatively provide such insight are few and far between. This is all the more true for argument scheme corpora, which tend to suffer from a combination of limited size, poor validation, and the use of ad hoc restricted typologies. In the current paper, we describe the annotation of schemes on the basis of two distinct classifications: Walton’s taxonomy of argument schemes, and Wagemans’ Periodic Table of Arguments. We describe the annotation procedure for each, and the quantitative characteristics of the resulting annotated text corpora. In doing so, we extend the annotation of the preexisting US2016 corpus of televised election debates, resulting in, to the best of our knowledge, the two largest consistently annotated corpora of schemes in argumentative dialogue publicly available. Based on evaluation in terms of inter-annotator agreement, we propose further improvements to the guidelines for annotating schemes: the argument scheme key, and the Argument Type Identification Procedure.
Where’s Europe?
Authors: Heffernan Mike 
Published: May 2020

AbstractThis commentary wonders why these canonical textbooks, conceived and written in the UK as the country was integrating itself economically and politically into the European project, make so little reference to Europe as a conceptual, analytical or geopolitical framework. These highly successful textbooks have helped create an idea of modern human geography as an essentially Anglo-American social science, different in form, content and objectives from earlier, largely European versions of the discipline.