bluuebunny/crossref_metadata_2025_split huggingface dataset:
The influence of sulfate availability on rheology of fresh cement paste
Authors: Mbasha Willy , Haldenwang Rainer , Masalova Irina 
Published: September 2020

Abstract
Natural gypsum can degenerate into hemihydrate during cement clinker grinding which changes the physical and chemical properties of cement hydration, affecting therefore the fresh and hardened properties of cement based materials. Cement systems containing a constant total amount of calcium sulfate (4%) with relative proportions of hemihydrate and natural gypsum were considered. Rheological measurements were executed on an Anton Paar MCR51 rheometer to evaluate the flow properties of cement pastes. Results show that, the yield stress and the plastic viscosity of cement pastes were affected when the degeneration of natural gypsum exceeded 50%. Above this concentration, the yield stress remarkably increased and a variation in plastic viscosity of about 50% was observed. Using TG-DSC techniques, it was shown that, the amount of formed ettringite could not explain these rheological changes. However, centrifugational packing and SEM-SE measurements confirmed that, more than the amount of ettringite precipitated, ettringite morphology plays a major role in controlling the yield stress and plastic viscosity of fresh cement pastes.
Polyphenol content and antioxidant activities of Prunus padus L. and Prunus serotina L. leaves: Electrochemical and spectrophotometric approach and their antimicrobial properties
Authors: Telichowska Aleksandra , Kobus-Cisowska Joanna , Ligaj Marta , Stuper-Szablewska Kinga , Szymanowska Daria , Tichoniuk Mariusz , Szulc Piotr 
Published: September 2020

AbstractThe aim of the study was to compare the content of selected phytochemicals as well as the antioxidant and antimicrobial potential of the leaves of Prunus padus L. and Prunus serotina L., as there is very little research on this subject in the literature. Therefore, it is used to deepen knowledge on this subject. In addition, an electrochemical test was also carried out, which was not yet available for the above plants. Antibacterial studies have also been deepened to include the analysis of new strains of bacteria and fungi, which has not been studied earlier. The water extracts of P. padus using the utra-performance liquid chromatography (UPLC) system showed a higher content of both phenolic acids and flavonols (651.77b ± 18.12 mg/100 g dw for acids and 3.85b ± 0.08 mg/100 g dw for flavonols, respectively). Ferulic and p-coumaric acids were the dominant polyphenols in leaves. Extracts from P. padus showed higher activity against DPPH radical, which was 6.62b ± 0.06 mg TE/1 g dw, as well as higher antioxidant capacity, measured using 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) cation radical (37.39b ± 3.81 mg TE/g dw). The higher antioxidant potential of P. padus was confirmed based on the oxidizing potentials of electroactive compounds present in them. Stronger inhibition against Enterococcus faecium and Klebsiella pneumoniae was found for P. padus, whereas P. serotina extract was more potent against Enterococcus faecium bacterium. It has been shown that P. padus can be an attractive raw material with antioxidant and antimicrobial properties that can be used on a much wider scale in food technology than its current application.
Language production experiments as tools for corpus construction: A contrastive study of complementizer agreement
Authors: Fingerhuth Matthias , Breuer Ludwig Maximilian 
Published: September 2020

AbstractThe investigation of linguistic phenomena in corpora of spontaneous speech is sometimes hindered by corpus size or by the complexity of the factors influencing their occurrence. Language Production Experiments (LPEs) can specifically elicit such phenomena and can therefore be used to build corpora that allow for their investigation. Yet experiments are a wide category that covers very different tasks, and there is little empirical research that compares speakers’ response behavior to different task types. In this paper, we compare the responses of a group of 22 speakers to a translation task and a completion task, both of which target the syntactic phenomena complementizer agreement (CA). The results indicate that both experimental methods offer legitimate ways to investigate the phenomenon with specific advantages and disadvantages. However, a comparison of results from both tasks allows for insights that a single task could not have provided.
Energy convexity of intrinsic bi-harmonic maps and applications I: Spherical target
Authors: Laurain Paul , Lin Longzhi 
Published: September 2020

Abstract
In this paper, we show an energy convexity and thus uniqueness for weakly intrinsic bi-harmonic maps from the unit 4-ball

B
1

⊂

ℝ
4

{B_{1}\subset\mathbb{R}^{4}}

into the sphere

𝕊
n

{\mathbb{S}^{n}}

. In particular, this yields a version of uniqueness of weakly harmonic maps on the unit 4-ball which is new. We also show a version of energy convexity along the intrinsic bi-harmonic map heat flow into

𝕊
n

{\mathbb{S}^{n}}

, which in particular yields the long-time existence of the intrinsic bi-harmonic map heat flow, a result that was until now only known assuming the non-positivity of the target manifolds by Lamm [26]. Further, we establish the previously unknown result that the energy convexity along the flow yields uniform convergence of the flow.
Benefit Corporations and Corporate Social Intrapreneurship
Authors: Esposito De Falco Salvatore , Renzi Antonio 
Published: September 2020

Abstract
The present Special Issue focuses benefit corporation and social intrapreneurship as two topics which in the last decades have taken on a growing role in studies about both management and economics. This growing interest comes from globalization and digitization phenomena that have determined a change in firms’ stakeholders expectations. In this regard, social pressures about the behavior of companies have determined a new way of conceiving profit seen not only as shareholder remuneration but also as a direct or indirect tool to foster greater interdependence between economic activities and social objectives. For instance, the relationship between profit and sustainability no longer follows dichotomous logic. The firms are moving towards a path of socialization essential for their survival. The issue of sustainability, which previously appeared secondary in business economics studies, today is a pure necessity; the current competitive dimensions are based on intense and continuous engagement actions towards all stakeholders. This perspective is reflected in new theoretical strands such as the Social Emotional Wealth Theory, in which profit in the short run assumes secondary positions with respect to the survival not only of the company, but also of its founder, who tends to link its “immortality” to his/her firm. Thus, issues related to the sustainability are entering more and more the DNA of the firms on the one hand and economic policies are increasingly interested in the global aspects of sustainability (social, economic, environmental and governance) on the other hand. These trends have favored the development of new types of businesses, such as benefit corporation and start-ups related to the social entrepreneurship logic, committed to combining long-term profitability with certain standards and optimizing their positive impact on employees, the community in which they operate and the environment as well. The current economic crisis caused by Covid-19 seems to have accelerated this tendency to combine economic and social benefits.
Kinetics of iron removal from quartz under ultrasound-assisted leaching
Authors: Yang Chang-Qiao , Li Su-Qin 
Published: September 2020

AbstractKinetics of iron removal from quartz under the ultrasound-assisted leaching was explored in this paper, and the effects of temperature, leaching time, stirring speed and ultrasonic input power on iron removal were studied. The results revealed that the reaction kinetics followed the shrinking core model and the product layer internal diffusion was the rate-determining step in the ultrasound-assisted leaching process. The activation energy of the ultrasonic-assisted leaching reaction was 27.72 kJ/mol, which was 7.28 kJ/mol higher than that of the regular method. Moreover, the kinetic equation and mathematical model of iron removal from quartz were established. Compared with the regular leaching, only 40 min were required for the ultrasound-assisted leaching process to achieve an iron removal rate of up to 74%. Under the optimal parameters, SiO2 content of concentrate increased from 99.5828% to 99.9047%, and Fe2O3 content reduced from 0.0857% to 0.0223%. Additionally, it was found that the iron removal rate increased with increasing temperature, stirring speed or ultrasonic power.
Evolution of nonmetallic inclusions in pipeline steel during LF and VD refining process
Authors: Zhu Hangyu , Zhao Jixuan , Li Jianli , Hu Qian , Peng Chenxi 
Published: September 2020

AbstractThe formation and evolution of nonmetallic inclusions in pipeline steel were investigated by SEM, EDS and INCA Feature Analysis System, with the industrial process of electric arc furnace → ladle furnace (LF) refining → vacuum degassing → continuous casting. The composition, size and amount of inclusions during refining process were discussed systematically. The results show that inclusions at each refining step are mainly small-particle inclusions (below 5 µm), and the total number of inclusions has been reduced significantly due to the refining effect of slag during LF refining. The calcium (Ca) treatment increases the amount of small inclusions. The types of inclusion are mainly Al2O3 and MnO–SiO2–Al2O3 before LF, and they are transformed into CaO–Al2O3, MgO–Al2O3 and CaO–MgO–Al2O3 during LF process. After Ca treatment, inclusions are changed to CaO–Al2O3–(CaS) and CaO–MgO–Al2O3–(CaS). Typical inclusions are still mainly CaO–Al2O3 and CaO–MgO–Al2O3 in tundish, but the composition of those inclusions has been changed and located to the low melting point region in ternary phase diagram. Such inclusions will further be removed as continuous casting approaches.
Distressed Firm Valuation: A Scenario Discounted Cash Flow Approach
Authors: Buttignon Fabio 
Published: September 2020

Abstract
Valuation of a distressed company is a very tricky issue, for which many approaches and methods have been provided by the literature. Unfortunately, many of the more suitable proposals from a theoretical point of view (i.e., those based on option pricing theory, and even integrated with game theory) are very difficult to apply to real cases. To face the many contingencies emerging in a real case valuation, a scenario discounted cash flow (SDCF) model is provided here. The focus is on companies at an advanced stage of distress, where their ability to operate as a going concern is in question, and maintenance or recovery of business continuity requires significant interventions in the firm’s strategic, operational, and financial structure. In this context, SDCF, with a number of arrangements elaborated here, appears useful for valuing assets, debt, and equity – from current or potential new investors – and the interactions between them, which are particularly critical for distressed companies. At the same time, SDCF takes into account the firm’s liquidation option, not only at the valuation date but even after a restructuring plan has been launched. The going-concern value including the liquidation option should be the reference point for judging the suitability of business continuity compared to liquidation. In presenting the model, the key concepts and methodology adopted are set out following a numerical example inspired by a real case.
A Novel Dual Image Watermarking Technique Using Homomorphic Transform and DWT
Authors: Khare Priyank , Srivastava Vinay Kumar 
Published: September 2020

Abstract
In this paper a new technique of dual image watermarking is proposed for protection of ownership rights which utilizes salient properties of homomorphic transform (HT), discrete wavelet transform (DWT), singular value decomposition (SVD) and Arnold transform (AT). In embedding algorithm host image is splitted into reflectance and illumination components using HT, DWT is further applied to the reflectance component resulting in frequency subbands (HL and LH) which are transformed by SVD. Two image watermarks are selected for embedding process whereas security of proposed algorithm is strengthen by performing scrambling of second watermark through AT. Both watermarks are transformed with DWT and SVD. Singular values (SVs) of both transformed watermark are embedded into SVs of host image. Simulation results clearly signifies for high robustness and imperceptibility of proposed algorithm as it is examined under various attacks. Superiority of proposed technique is illustrated by comparing it with other reported methods.
Glycogen storage disease type VI can progress to cirrhosis: ten Chinese patients with GSD VI and a literature review
Authors: Lu Shi-Qi , Feng Jia-Yan , Liu Jie , Xie Xin-Bao , Lu Yi , Abuduxikuer Kuerbanjiang 
Published: September 2020

Abstract

Objectives
The aim of our study is to systematically describe the genotypic and phenotypic spectrum of Glycogen storage disease type VI (GSD VI), especially in Chinses population.

Methods
We retrospectively analyzed ten Chinese children diagnosed as having GSD VI confirmed by next generation sequencing in Children’s Hospital of Fudan University and Jinshan Hospital of Fudan University. We described the genotypic and phenotypic spectrum of GSD VI through the clinical and genetic data we collected. Moreover, we conducted a literature review, and we compared the genotypic and phenotypic spectrum of GSD VI between Chinese population and non Chinese population.

Results
For the first time, we found that four Chinese patients showed cirrhosis in liver biopsy characterized by the formation of regenerative nodules. In addition, c.772+1G>A and c.1900G>C, p.(Asp634His) were recurrent in three Chinese families and four European families respectively indicating that the genotypic spectrum of PYGL gene may vary among the population. Furthermore, we identified seven novel variants in PYGL gene.

Conclusions
Our study enriched the genotypic and phenotypic spectrum of GSD VI, and provided a new clue for management of GSD VI.
Self-assessed puberty is reliable in a low-income setting in rural Pakistan
Authors: Campisi Susan C. , Humayun Khadija N. , Wasan Yaqub , Soofi Sajid , Islam Muhammad , Lou Wendy , Vandermorris Ashley , Söder Olle , Bhutta Zulfiqar A. 
Published: September 2020

Abstract

Objectives
Staging sexual maturation is an integral component of adolescent research. The Pubertal Development Scale (PDS) is commonly used as a puberty self-assessment tool because it avoids the use of images. Among the youth living in rural Pakistan, we determined the accuracy of self-reported pubertal assessments using a modified PDS compared to the ‘gold standard’ of physically assessed Tanner stages by a physician.

Methods
The strength of agreement between self-assessed puberty using a modified PDS and the ‘gold’ standard of physician-assessed Tanner stages was reported using weighted kappa (κ
w) for girls (n = 723) of 9.0–14.9 years of age or boys (n = 662) of 10.0–15.9 years of age living in the rural District of Matiari.

Results
Agreement between the gold standard and self-assessment for puberty was substantial, with a κ
w of 0.73 (95% confidence interval [CI]: 0.67; 0.79) for girls and a κ
w of 0.61 (95% CI: 0.55; 0.66) for boys. Substantial agreement was observed for both boys and girls classified as thinness but only for girls with a normal body mass index. Those who were classified as severely thin had moderate agreement. The prevalence of overestimation was 18.5% (95% CI: 15.9–21.5) for girls and 2.7% (95% CI: 1.7–4.3) for boys, while the prevalence of underestimation estimation was 8.0% (95% CI: 6.2–10.2) for girls and 29.0% (95% CI: 25.8–32.6) for boys.

Conclusions
Most girls and boys assessed their pubertal development with substantial agreement with physician assessment. Girls were better able to assess their puberty, but they were more likely to overestimate. Agreement for boys was also substantial, but they were more likely to underestimate their pubertal development. In this rural Pakistan population, the PDS seems to be a promising tool for self-assessed puberty.
On Method: The Fact of Science and the Distinction between Natural Science and the Humanities
Authors: Falkenburg Brigitte 
Published: September 2020

AbstractThis article examines Cohen’s “transcendental method”, Windelband’s “critical method”, the neo-Kantian distinctions between natural science and the humanities (i. e., human or cultural sciences), and Weber’s account of ideal-typical explanations. The Marburg and the Southwest Schools of neo-Kantianism have in common that their respective philosophies of science focused on method, but they substantially differ in their approaches. Cohen advanced the “transcendental method”, which was taken up and transformed by Natorp and Cassirer; later, it became influential in neo-Kantian approaches to 20thcentury physics. Windelband distinguished between facts and values, linking the former to the “genetic” method of history and the latter to the “critical” method of philosophy; and between the “nomothetic” and “idiographic” methods of the empirical sciences, a distinction further elaborated by Rickert. The distinction does not give rise to a sharp discrimination but is rather what Weber would later call an ideal type. All these approaches contribute in different ways to understanding the structure of scientific knowledge, focusing on different aspects of the general path of the empirical sciences between rationalism and empiricism.
An estimation of density and population size for Eld’s deer in the Xonnabouly Eld’s deer sanctuary, Lao PDR
Authors: Khotpathoom Thananh , Vu Thinh Tien 
Published: September 2020

AbstractEld’s deer (Rucervus eldi) was once thought to be extinct in the wild in Lao PDR. In early 2000, however, conservationists discovered that they still exist in Savannakhet Province. In 2004, the government of Lao PDR established the Xonnabouly Eld’s Deer Sanctuary with an area of about 93,000 ha. However, no population size estimates for this significant population are available for guiding conservation efforts of preserving this important species. In this study, we used the line transect method to assess the Eld’s deer density and abundance during the survey. During our surveys, we made 27 visual observations of Eld’s deer. We estimated the average detection probability to be 0.57 (CI: 0.45–0.72) and the average density to be 0.58 (CI: 0.33–1.01). We estimated the total number of Eld’s deer in the surveyed area of the Xonnabouly Eld’s Deer Sanctuary to be 173 (95% CI: 99–305). The population in the Xonnabouly Eld’s Deer Sanctuary seems to be the most important Eld’s deer population forR. e. siamensissubspecies as well as for theR. eldii, at least in the continental part of Asia. With the sharp decline of Eld’s deer populations in other protected areas (especially in Cambodia and Myanmar), we should pay special attention and give more priority on the conservation efforts of preserving the remaining population in Xonnabouly Eld’s Deer Sanctuary.
Active plasmonic nanoantenna: an emerging toolbox from photonics to neuroscience
Authors: Habib Ahsan , Zhu Xiangchao , Fong Sabrina , Yanik Ahmet Ali 
Published: September 2020

Abstract
Concepts adapted from radio frequency devices have brought forth subwavelength scale optical nanoantenna, enabling light localization below the diffraction limit. Beyond enhanced light–matter interactions, plasmonic nanostructures conjugated with active materials offer strong and tunable coupling between localized electric/electrochemical/mechanical phenomena and far-field radiation. During the last two decades, great strides have been made in development of active plasmonic nanoantenna (PNA) systems with unconventional and versatile optical functionalities that can be engineered with remarkable flexibility. In this review, we discuss fundamental characteristics of active PNAs and summarize recent progress in this burgeoning and challenging subfield of nano-optics. We introduce the underlying physical mechanisms underpinning dynamic reconfigurability and outline several promising approaches in realization of active PNAs with novel characteristics. We envision that this review will provide unambiguous insights and guidelines in building high-performance active PNAs for a plethora of emerging applications, including ultrabroadband sensors and detectors, dynamic switches, and large-scale electrophysiological recordings for neuroscience applications.
Production of a fine fraction using micro-perforated screens
Authors: Björk Elisabeth , Bouveng Mikael , Vomhoff Hannes 
Published: September 2020

Abstract
The objective for this work was to investigate the possibility to use a pressure screen equipped with a micro-perforated screen basket to produce a fine fraction from bleached chemical pulp. Trials were performed with unrefined bleached chemical hardwood pulp, and with unrefined and refined bleached chemical softwood pulp. The effect of feed concentration, feed flow, and volumetric fine fraction flow was evaluated. The difference between the fine fraction (i. e. the particles passing the screen) and the feed was analysed by studying the fibre morphology. The results showed that high feed concentration was positive for both the fine fraction concentration and the separation efficiency. A higher fine fraction concentration was also obtained when using hardwood pulp, which was explained by the shorter fibre length. Refining of the pulp prior to the fractionation proved beneficial, as a larger share of the refined pulp passed the screen, resulting in a twice as high concentration of the fine fraction when compared to unrefined pulp.
Effect of different particle sizes of nano-SiO2 on the properties and microstructure of cement paste
Authors: Meng Tao , Ying Kanjun , Hong Yongpeng , Xu Qinglei 
Published: September 2020

Abstract
Nano-materials modified cement-based materials have attracted wide attention due to their advantages of improving strength and durability. In this paper, the effect of nano-SiO2 (NS) with particle sizes of 15 and 50 nm on the mechanical properties and microstructure of cement paste was studied. The results showed that 50 nm NS provided a greater compressive strength than that of 15 nm NS, while 15 nm NS afforded a denser microstructure than that of 50 nm NS. A fluctuation in the compressive strength was revealed using a physicochemical reaction equation, and the microstructure was interpreted by a pore structure analysis. In addition, the orientation index of calcium hydroxide (CH) with 15 nm NS could be reduced significantly in the early stages (the early stages refer to the first three days from the maintaining of specimens) compared with when the 50 nm NS was used. The experimental results also showed that NS helped increase the mechanical strength of cement paste, advance the endothermic peak of CH, and refine the size of the CH crystals. The microstructural changes at different stages of cement paste with different particle sizes of NS were investigated by X-ray diffraction, scanning electron microscopy, mercury intrusion porosimetry and differential thermal analysis. This study is expected to promote the research and application of nano-materials in the cement industry by clarifying the performance of NS with different particle sizes.