bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ἀρχή and δῖνος: Vortices as Cosmogonic Powers and Cosmic Regulators. Study Case: The Whirling Lightning Bolt of Zeus
Authors: Bonnechere Pierre , Cursaru Gabriela 
Published: December 2020

AbstractIn the cosmogonic and eschatological narratives of the origin and end of the world, both in some early myths and in the Presocratics’ systems, the vortex and other spinning motifs act as necessary agents of both order and disorder. Their rapidity induces a separation of opposites, and they jointly cause the resulting masses to move towards their “appropriate” place in the universe and thus produce a constant pendulum between multiplicity and unity. Furthermore, vortices appear to be the cosmic agents of the divine will, and they constantly regulate divine law and justice. Every time the cosmic order they have established is threatened, the Olympians punish the hubristic wrongdoers and protect the equilibrium of the world, using their attributes – e. g., the trident, the kerykeion, or the thyrsus – which often feature whirling shapes, movements, and patterns. The best example is Zeus’ thunderbolt, which is described as a whirling weapon from Hesiod to Nonnos, evoking the tempestuous force and cosmic energy of its origins. Far from being incidental, the vortex was clearly at the centre of the Greek conception of the entire cosmos, from the rotation of the planets to the whirling winds and the tumultuous or serpentine rivers, to the symposium and everyday life, even to turmoil and other spinning inner emotional states.
LncRNA SNHG15 contributes to doxorubicin resistance of osteosarcoma cells through targeting the miR-381-3p/GFRA1 axis
Authors: Zhang Jinshan , Rao Dan , Ma Haibo , Kong Defeng , Xu Xiaoming , Lu Hougen 
Published: December 2020

AbstractBackgroundOsteosarcoma is a common primary malignant bone cancer. Long noncoding RNA small nucleolar RNA host gene 15 (SNHG15) has been reported to play an oncogenic role in many cancers. Nevertheless, the role of SNHG15 in the doxorubicin (DXR) resistance of osteosarcoma cells has not been fully addressed.MethodsCell Counting Kit-8 assay was conducted to measure the half-maximal inhibitory concentration value of DXR in osteosarcoma cells. Western blotting was carried out to examine the levels of autophagy-related proteins and GDNF family receptor alpha-1 (GFRA1). Quantitative reverse transcription-polymerase chain reaction was performed to determine the levels of SNHG15, miR-381-3p, and GFRA1. The proliferation of osteosarcoma cells was measured by MTT assay. The binding sites between miR-381-3p and SNHG15 or GFRA1 were predicted by Starbase bioinformatics software, and the interaction was confirmed by dual-luciferase reporter assay. Murine xenograft model was established to validate the function of SNHG15 in vivo.ResultsAutophagy inhibitor 3-methyladenine sensitized DXR-resistant osteosarcoma cell lines to DXR. SNHG15 was upregulated in DXR-resistant osteosarcoma tissues and cell lines. SNHG15 knockdown inhibited the proliferation, DXR resistance, and autophagy of osteosarcoma cells. MiR-381-3p was a direct target of SNHG15, and GFRA1 bound to miR-381-3p in osteosarcoma cells. SNHG15 contributed to DXR resistance through the miR-381-3p/GFRA1 axis in vitro. SNHG15 depletion contributed to the inhibitory effect of DXR on osteosarcoma tumor growth through the miR-381-3p/GFRA1 axis in vivo.ConclusionsSNHG15 enhanced the DXR resistance of osteosarcoma cells through elevating the autophagy via targeting the miR-381-3p/GFRA1 axis. Restoration of miR-381-3p expression might be an underlying therapeutic strategy to overcome the DXR resistance of osteosarcoma.
Effects of ageing on the surface characteristics and Cu(ii) adsorption behaviour of rice husk biochar in soil
Authors: Huang Zhaoqin , Hu Linchao , Dai Jingyu 
Published: December 2020

AbstractThe properties of rice husk biochar during the ageing process in soil and the resulting impacts on sorption capacity with respect to Cu(ii) were assessed. Rice husk-derived biochar was placed in fabric bags and buried in a plastic incubator filled with soil for 0–240 d. The aged biochar was then characterised and its sorption capacity compared with control (unaged) biochar in batch sorption experiments. The structural composition and morphology of the biochar before and after ageing were analysed based on element composition, scanning electron microscopy (SEM) coupled with energy X-ray dispersive spectroscopy (EDS), diffuse reflectance infrared Fourier transform infrared spectroscopy (DRIFTS), and X-ray photoelectron spectroscopy (XPS). The concentration of O, atomic O/C ratios, and carboxyl and hydroxyl functional groups increased at the surface of the biochar during ageing, which together indicated oxidation. Within the biochar particles, O/C ratios progressively increased towards their outer surfaces. Furthermore, ageing for more than 120 d facilitated Cu(ii) sorption as oxygen-containing groups were able to develop. The maximum adsorption capacity (qm) of biochar increased by 1.24 ∼ 1.32 times after ageing in the soil for 240 d. It is suggested that biochar surface properties were gradually altered during environmental exposure and the aged rice husk biochar showed increased performance in Cu(ii) adsorption. However, the performance of aged biochar as a soil remediator or conditioner will be affected by the ageing process and interactions among different soil components. As such, further research is required to evaluate these complex effects.
On the Energy Stable Approximation of Hamiltonian and Gradient Systems
Authors: Egger Herbert , Habrich Oliver , Shashkov Vsevolod 
Published: December 2020

Abstract
A general framework for the numerical approximation of evolution problems is presented that allows to preserve an underlying dissipative Hamiltonian or gradient structure exactly.
The approach relies on rewriting the evolution problem in a particular form that complies with the underlying geometric structure.
The Galerkin approximation of a corresponding variational formulation in space then automatically preserves this structure which allows to deduce important properties for appropriate discretization schemes including projection based model order reduction.
We further show that the underlying structure is preserved also under time discretization by a Petrov–Galerkin approach.
The presented framework is rather general and allows the numerical approximation of a wide range of applications, including nonlinear partial differential equations and port-Hamiltonian systems.
Some examples will be discussed for illustration of our theoretical results, and connections to other discretization approaches will be highlighted.
One-dimensional constrained inversion study of TEM and application in coal goafs’ detection
Authors: Yuanlei Si , Maofei Li , Yaoning Liu , Weihong Guo 
Published: December 2020

AbstractTransient electromagnetic method (TEM) is often used in urban underground space exploration and field geological resource detection. Inversion is the most important step in data interpretation. Because of the volume effect of the TEM, the inversion results are usually multi-solvable. To reduce the multi-solvability of inversion, the constrained inversion of TEM has been studied using the least squares method. The inversion trials were performed using two three-layer theoretical geological models and one four-layer theoretical geological model. The results show that one-dimensional least squares constrained inversion is faster and more effective than unconstrained inversion. The induced electromotive force attenuation curves of the inversion model indicate that the same attenuation curve may be used for different geological conditions. Therefore, constrained inversion using known geological information can more accurately reflect the underground geological information.
Esterification of glycerol with acetic acid using a sulfonated polyphenylene sulfide non-woven fabric as a catalyst
Authors: Li Xueyang , Zhang Jiao , Song Yunfei , Ji Yanhong , Younas Mohammad , He Benqiao 
Published: December 2020

Abstract
In this work, the esterification of glycerol with acetic acid (HOAc) was investigated under sulfonated polyphenylene sulfide non-woven fabric (SPSF) as a solid catalyst. The effects of the amount of catalyst, reaction temperature, molar ratio of glycerol to HOAc and the reaction time on the esterification were studied in detail. It was found that SPSF has good catalytic activity and stability. Under the reaction conditions of the molar ratio of glycerol/HOAc of 1:6 (glycerol 0.1 mol), the reaction temperature of 110 °C, the amount of catalyst of 3 g, and the reaction time of 2 h, the glycerol conversion and the selectivity to diacetin (DAG) reached upto 96 and 56.1%, respectively. Reusability test of SPSF showed that no significant declination in the glycerol conversion and the selectivity was observed after five reaction cycles. The experimental results proved the esterification of glycerol with HOAc by SPSF a promising and green process.
Wavelet-optimized compact finite difference method for convection–diffusion equations
Authors: Mehra Mani , Patel Kuldip Singh , Shukla Ankita 
Published: December 2020

Abstract
In this article, compact finite difference approximations for first and second derivatives on the non-uniform grid are discussed. The construction of diffusion wavelets using compact finite difference approximation is presented. Adaptive grids are obtained for non-smooth functions in one and two dimensions using diffusion wavelets. High-order accurate wavelet-optimized compact finite difference (WOCFD) method is developed to solve convection–diffusion equations in one and two dimensions on an adaptive grid. As an application in option pricing, the solution of Black–Scholes partial differential equation (PDE) for pricing barrier options is obtained using the proposed WOCFD method. Numerical illustrations are presented to explain the nature of adaptive grids for each case.
Rice husk as a fibre in composites: A review
Authors: Bisht Neeraj , Gope Prakash Chandra , Rani Nisha 
Published: December 2020

AbstractIn the last decade due to ever growing environmental concerns, use of natural fibres as fibre materials has gained momentum and acceptance. Natural fibres provide advantage of being economical and environment friendly at the same time. Rice husk, an agricultural waste is being utilized as a natural fibre for development of bio-composites. Present paper attempts to understand the applicability of rice husk as a fibre with various polymers based on the recent research works. It also throws light on various modification techniques that can further enhance the associated mechanical properties by altering the chemical and physical properties of husk. The paper may assist in understanding the phenomenon associated in manufacture of rice husk based bio-composite and provide a critical insight to the future applications of rice husk.
Form variation of pronominal it-clefts in written English
Authors: Bevacqua Luca , Scheffler Tatjana 
Published: December 2020

Abstract
Clefts are well-studied as a construction which induces emphasis on its clefted referent. However, little is known about the distribution of different stylistic forms of it-cleft variants. We report on a corpus study mining data from Twitter, targeting sentences clefting a pronoun in English. We examine the following features: case and syntactic role of the clefted pronoun, contraction of the copula, choice of complementiser and use of emphasis markers. The results show systematic associations between these features. A further comparison between the Twitter dataset and data from iWeb, a corpus of general-use web language, shows significant differences in levels of emphasis and formality, positioning Twitter language in the middle of the conceptual orality spectrum.
On the determination of the number of positive and negative polynomial zeros and their isolation
Authors: Prodanov Emil M. 
Published: December 2020

Abstract
A novel method with two variations is proposed with which the number of positive and negative zeros of a polynomial with real coefficients and degree n can be restricted with significantly better determinacy than that provided by the Descartes rule of signs. The method also allows the isolation of the zeros of the polynomial quite successfully, and the determined root bounds are significantly narrower than the Cauchy and the Lagrange bounds. The method relies on solving equations of degree smaller than that of the given polynomial. One can determine analytically the exact number of positive and negative zeros of a polynomial of degree up to and including five and also fully isolate the zeros of the polynomial analytically, and with one of the variations of the method, one can analytically approach polynomials of degree up to and including nine by solving equations of degree not more than four. For polynomials of higher degree, either of the two variations of the method should be applied recursively. Numerous examples are given. Presented is the full classification of the roots of the cubic equation, together with their isolation intervals – especially important for various scientific models for which the coefficients of the equation might be functions of the model parameters. An application of the method to a quartic equation with variable coefficients (resulting from the study of wave–current interactions in the physically realistic model of azimuthal two-dimensional non-viscous flows with piecewise constant vorticity in a two-layer fluid with a flat bed and a free surface) has been demonstrated. A step-by-step algorithm for each version of the method has also been presented.
The Rural Labor Transfer with Respect to the Development of Farmland Leasing Market: Evidence from Rural China
Authors: Zhang Weikun , Liang Hanyuan , Chen Zhe , Zhang Jun 
Published: December 2020

Abstract
Since relaxing policy control for farmland leasing, rural labor transfer also arises. The paper estimates the relationship between farmland leasing market and rural labor transfer based on a Double Hurdle Model with the survey data collected from 2793 households in rural China. Results show that the farmland leasing-in scale restrains rural labor transfer mainly in the full-time movement by stimulating the behavior of farmers to plant rice, whereas farmland leasing-out scale, compared to farmland leasing-in scale has an opposite effect on labor transfer, and performs this effect by increasing the likelihood of the desired degree for rural households to do urban business. Specifically, we also find the underlying channels such as the farmers’ desire to the agricultural investment and the Dipiao-ticket transaction through which farmland leasing-in or -out scale affects labor transfer separately. We further find a negative effect of farmland leasing-in scale on household savings and a positive effect of farmland leasing-out scale on that mainly evidently in the group of rural labor transfer. Moreover, farmland leasing-out scale has no significantly influence on the urban life worry of farmers, does not let farmers worry about their urban housing, and does worry about their children’s education. Our study has a deep policy implication on social planners in China to strengthen the systems of the farmland leasing and rural labor transfer.
GPR37 promotes the malignancy of lung adenocarcinoma via TGF-β/Smad pathway
Authors: Wang Jian , Xu Min , Li Dan-Dan , Abudukelimu Wujikenayi , Zhou Xiu-Hong 
Published: December 2020

Abstract
This paper aimed to research the function and in-depth mechanism of GPR37 in lung adenocarcinoma (LUAD). Herein, based on TCGA and Oncomine databases, we revealed that GPR37 was expressed at high levels in LUAD, and upregulation of GPR37 was related to the poor outcomes. Furthermore, biological function experiments in vitro were utilized to assess whether GPR37 impacts malignant phenotype of LUAD cells. Gain- or loss-of-function assays indicated that the upregulation of GPR37 contributed to improving the proliferation, migration, and invasion of LUAD cells in vitro, while knockdown of GPR37 can inhibit the malignant biological behaviors. Then, we found that depletion of GPR37 resulted in a decrease in the expression of TGF-β1 as well as the extents of Smad2 and Smad3 phosphorylation, while overexpression of GPR37 presented opposite outcomes. Altogether, our findings indicated that GPR37 is a potential oncogene of LUAD, and its promoting effects on the malignant progression of LUAD may be realized via TGF-β/Smad pathway.
Problematizing enterprise culture in global academic publishing: Linguistic entrepreneurship through the lens of two Chinese visiting scholars in a U.S. university
Authors: Li Wendy , De Costa Peter I. 
Published: December 2020

Abstract
The global spread of English has made it the dominant language in academic publishing (Hyland, Ken. 2015. Academic Publishing: Issues and Challenges in the Construction of Knowledge. Oxford: Oxford University Press). Influenced by enterprise culture, scholars from peripheral non-Western countries face mounting pressure to publish in English (Curry, Marry Jane & Theresa Lillis (eds.). 2017. Global academic publishing: Policies, perspectives and pedagogies. Bristol, UK: Multilingual matters). The English academic publishing industry has also ballooned in China (Tian, Mei, Yan Su & Xin Ru. 2016. Perish or publish in China: Pressures on young Chinese scholars to publish in internationally indexed journals. Publications 4(2). 9.). In response to the Chinese government’s commitment to developing world-class universities and disciplines to enhance the internationalization of its higher education system, local Chinese scholars are increasingly encouraged to produce research that has international impact, as well as to engage in international academic exchange and cooperation arrangements (Li, Yongyan & Guangwei Hu. 2018. Collaborating with management academics in a new economy: Benefits and challenges. Publications 6. 1–17). In seeking academic collaboration, a growing number of Chinese academics have participated in visiting scholar programs offered by western-based universities. In light of this emergent phenomenon, this study explores how Chinese visiting scholars, driven by an ethical imperative to enhance human capital at “neoliberal universities” (Holborow, Marnie. 2013. Applied linguistics in the neoliberal university: Ideological keywords and social agency. Applied Linguistics Review 4(2). 229–257), exploited language-related resources available to them to succeed in English academic publishing. Data, which include in-depth interviews, social media posts, journals, resumes and manuscripts that were in press at academic journals, were collected from two Chinese professors who took part in a one-year visiting scholar program in the U.S. university. Our findings revealed that under the mounting expectations to publish in English-dominated SSCI journals, our focal participants enacted linguistic entrepreneurial practices.
Selective addition of C-PVAm to improve dry strength of TMP mixed tissue paper
Authors: Seo Jin Ho , Lee Kwang Seob , Lee Tae Joo , Ryu Jeong Yong 
Published: December 2020

Abstract
During the manufacture of low basis weight tissue paper, it is difficult to efficiently use the dry strength agent (DSA) because a large amount of DSA adsorbed fines releases in forming roll by centrifugal forces. In this study, cationic polyvinylamine (C-PVAm) was used as a DSA in an environment where the retention of fines was weak. Addition of C-PVAm to the thermomechanical pulp (TMP) or TMP mixed with softwood bleached kraft pulp (SwBKP) improved the turbidity of filtrate from sheet former, however, the strength of handsheet paper was similar to that without C-PVAm. When C-PVAm was selectively added to SwBKP as much as 4 %, the tensile index could be improved by approximately 10.6 % without changing the retention of fines. In addition, C-PVAm added before the beating of SwBKP showed better results than C-PVAm added after the beating in terms of fines retention, tensile index, and formation. In particular, the tensile index was improved about 7.7 % by adding of C-PVAm 4 % as is before beating of SwBKP. Consequently, it was found that C-PVAm with a high reaction rate can be added before beating of SwBKP to improve the physical strength.
Scalable fabrication of carbon materials based silicon rubber for highly stretchable e-textile sensor
Authors: Li Xinlin , Wang Rixuan , Wang Leilei , Li Aizhen , Tang Xiaowu , Choi Jungwook , Zhang Pengfei , Jin Ming Liang , Joo Sang Woo 
Published: December 2020

Abstract
Development of stretchable wearable devices requires essential materials with high level of mechanical and electrical properties as well as scalability. Recently, silicone rubber-based elastic polymers with incorporated conductive fillers (metal particles, carbon nanomaterials, etc.) have been shown to the most promising materials for enabling both high electrical performance and stretchability, but the technology to make materials in scalable fabrication is still lacking. Here, we propose a facile method for fabricating a wearable device by directly coating essential electrical material on fabrics. The optimized material is implemented by the noncovalent association of multiwalled carbon nanotube (MWCNT), carbon black (CB), and silicon rubber (SR). The e-textile sensor has the highest gauge factor (GF) up to 34.38 when subjected to 40% strain for 5,000 cycles, without any degradation. In particular, the fabric sensor is fully operational even after being immersed in water for 10 days or stirred at room temperature for 8 hours. Our study provides a general platform for incorporating other stretchable elastic materials, enabling the future development of the smart clothing manufacturing.
Improving flexural and dielectric properties of carbon fiber epoxy composite laminates reinforced with carbon nanotubes interlayer using electrospray deposition
Authors: Zakaria Muhammad Razlan , Akil Hazizan Md , Omar Mohd Firdaus , Abdullah Mohd Mustafa Al Bakri , Rahman Aslina Anjang Ab , Othman Muhammad Bisyrul Hafi 
Published: December 2020

Abstract
The electrospray deposition method was used to deposit carbon nanotubes (CNT) onto the surfaces of woven carbon fiber (CF) to produce woven hybrid carbon fiber–carbon nanotubes (CF–CNT). Extreme high-resolution field emission scanning electron microscopy (XHR-FESEM), X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared spectroscopy (FT-IR) were used to analyze the woven hybrid CF–CNT. The results demonstrated that CNT was successfully and homogenously distributed on the woven CF surface. Woven hybrid CF–CNT epoxy composite laminates were then prepared and compared with woven CF epoxy composite laminates in terms of their flexural and dielectric properties. The results indicated that the flexural strength, flexural modulus and dielectric constant of the woven hybrid CF–CNT epoxy composite laminates were improved up to 19, 27 and 25%, respectively, compared with the woven CF epoxy composite laminates.