bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rigidity of “Warsaw clay” from the Poznań Formation determined byin situtests
Authors: Rabarijoely Simon 
Published: November 2020

AbstractThe character of morphogenetic processes occurring within river valleys depends on the mechanical and hydrogeological properties of deposits that build up such landforms. In the case of the Polish Lowlands, a series of Pliocene clay lake sediments (so-called Poznań mottled clays) plays a special role. Their current locations and properties are associated with specific sedimentation conditions and glacitectonic deformations, which the soils have been subjected to many times in Pleistocene. Their presence in the lithological profile influences dynamics of slope processes in valleys’ escarpment zones and channel erosion stabilization. In this article, the “Warsaw clay” from the Poznań Series Formation is presented in comparison with other cohesive Quaternary sediments, which are mostly building neighboring outcrops. This article analyzes the Seismic Dilatometer (SDMT) results and a method of interpretation to determineIR, plasticity index, and liquid limit (LL) parameters. The undrained shear strengthSuwas determined based on the Cone Penetration Test (CPT), SDMT, and laboratory test results. Spatial variability of the strength and deformation parameters in the study area were determined using dilatometer test (SDMT) results. Finally, the nomogram chart is proposed to obtain the rigidity index (IR) of the preconsolidated Pliocene clays, depending on bothp0andp1pressures from SDMT and effective vertical stressσv0′{\sigma }_{\text{v0}}^{^{\prime} }and pore water pressureu0.
Identification of the spatial distributions, pollution levels, sources, and health risk of heavy metals in surface dusts from Korla, NW China
Authors: Hayrat Adila , Eziz Mamattursun 
Published: November 2020

Abstract
A total of 54 surface dust samples were gathered from Korla in NW China, and the concentrations of six heavy metal elements, such as Hg, Cd, As, Pb, Cr, and Cu, were determined by standard methods. The geostatistical analysis, multivariate statistical analysis, pollution load index (PLI), and the US EPA health risk assessment model were used to analyze the spatial distribution, pollution, and its potential health risk of heavy metals in surface dusts, and the main sources of heavy metals were also identified. The obtained results indicate that the average concentrations of As in surface dust of Korla is lower than the background values determined in Xinjiang soil, whereas the average concentrations of Hg, Cd, Pb, Cr, and Cu elements exceeded the corresponding background values by factors of 3.71, 1.87, 1.96, 1.14, and 1.29, respectively. The higher concentration of analyzed heavy metals is observed in the northeastern and northern parts in the study area. The pollution level of heavy metals decreased in the following order: Hg > Pb > Cd > Cu > Cr > As. Based on the identified concentrations, the collected dust samples are found to be heavily polluted by Hg and slightly polluted by As, and the remaining elements, Pb, Cd, Cu, and Cr, are found to be low polluted. Furthermore, the PLI values of heavy metals in surface dust vary between 0.74 and 2.74, with an average value of 1.40, at the low pollution level. In addition, As in surface dust in the study area is mainly natural source, while Hg, Cd, Cr, Cu, and Pb are mainly anthropogenic sources. Overall, the carcinogenic and noncarcinogenic health risks of the analyzed elements, instigated mainly by oral ingestion of surface dust, are found to be within the acceptable range for both children and adults. As and Cr are the main noncarcinogenic elements, whereas Cr is the major carcinogenic element among the investigated dust-bound heavy metals in Korla.
A note on the trace inequality for Riesz potentials
Authors: Imerlishvili Giorgi , Meskhi Alexander 
Published: November 2020

Abstract
We establish a necessary and sufficient condition on a non-negative locally integrable function v guaranteeing the (trace) inequality

∥

I
α

⁢
f

∥

L
v
p

⁢

(

ℝ
n

)

≤

C
⁢

∥
f
∥

L

p
,
1

⁢

(

ℝ
n

)

\lVert I_{\alpha}f\rVert_{L^{p}_{v}(\mathbb{R}^{n})}\leq C\lVert f\rVert_{L^{p%
,1}(\mathbb{R}^{n})}

for the Riesz potential

I
α

{I_{\alpha}}

, where

L

p
,
1

⁢

(

ℝ
n

)

{L^{p,1}(\mathbb{R}^{n})}

is the Lorentz space. The same problem is studied for potentials defined on spaces of homogeneous type.
On “On derivations and commutativity of prime rings with involution”
Authors: Almahdi Fuad Ali Ahmed 
Published: November 2020

Abstract
In this note, we indicate some errors in [S. Ali, N. A. Dar and M. Asci,
On derivations and commutativity of prime rings with involution,
Georgian Math. J. 23 2016, 1, 9–14] and present the correct versions of the erroneous results.
Associations of endothelial biomarkers, nitric oxide metabolites and endothelin, with blood pressure and coronary lesions depend on cardiovascular risk and sex to mark endothelial dysfunction on the SCORE scale
Authors: Gumanova Nadezhda G. , Gorshkov Alexander U. , Klimushina Marina V. , Kots Alexander Y. 
Published: November 2020

Abstract

Objectives
Endothelial dysfunction contributes to the onset and progression of cardiovascular diseases. However, direct associations of vasoactive mediators with cardiovascular risk are poorly understood.

Methods
We have determined associations of circulating levels of stable metabolites of nitric oxide, nitrate and nitrite (NOx), endothelin-1, and the endothelin-1/NOx ratio with blood pressure in 177 asymptomatic subjects without signs of coronary atherosclerosis; associations with blood pressure and with presence of coronary lesions were also evaluated in 457 patients suspected to have coronary heart disease with or without coronary lesions confirmed by coronary angiography. All participants were on a low nitrate diet 24 h prior to blood sampling.

Results
In men, NOx levels were inversely correlated with blood pressure similar to women with low (0–4%) European Systematic Coronary Risk Estimation (SCORE). However, the correlation was not significant in women with high SCORE (5–8%). High systolic blood pressure over 140 mm Hg was negatively associated with NOx levels in asymptomatic men (p=0.05) but not in women. This association is disrupted in male and female patients with coronary atherosclerosis. In male patients, NOx (p=0.05), endothelin (p=0.01), and the endothelin/NOx ratio (p=0.04) were associated with presence of coronary lesions.

Conclusions
Thus, elevated cardiovascular risk according to SCORE over 4% in asymptomatic women, but not in men, is associated with a shift in markers of endothelial dysfunction. Presence of coronary lesions in patients is associated with significant changes in circulating levels of markers of endothelial dysfunction in men but not in women.
Vitamin D and sleep duration: Is there a bidirectional relationship?
Authors: Mosavat Maryam , Smyth Aisling , Arabiat Diana , Whitehead Lisa 
Published: November 2020

Abstract
Vitamin D contributes to numerous physiological processes within the body but primarily calcium and bone homeostasis. Emerging evidence highlights a novel role for vitamin D in maintaining and regulating optimal sleep. Sleep is a known regulator of bone health, highlighting the interconnectedness between vitamin D concentrations, sleep duration and bone metabolism. It is possible that the relationship between sleep length and vitamin D is bidirectional, with vitamin D playing a role in sleep health and conversely, sleep affecting vitamin D levels. Nevertheless, limited information on the direction of the interaction is available, and much remains to be learned concerning the complex relationship between insufficient sleep duration and vitamin D deficiency. Given the potential to implement interventions to improve sleep and vitamin D supplementation, understanding this relationship further could represent a novel way to support and improve health.
The role of very long chain fatty acids in yeast physiology and human diseases
Authors: Erdbrügger Pia , Fröhlich Florian 
Published: November 2020

Abstract
Fatty acids (FAs) are a highly diverse class of molecules that can have variable chain length, number of double bonds and hydroxylation sites. FAs with 22 or more carbon atoms are described as very long chain fatty acids (VLCFAs). VLCFAs are synthesized in the endoplasmic reticulum (ER) through a four-step elongation cycle by membrane embedded enzymes. VLCFAs are precursors for the synthesis of sphingolipids (SLs) and glycerophospholipids. Besides their role as lipid constituents, VLCFAs are also found as precursors of lipid mediators. Mis-regulation of VLCFA metabolism can result in a variety of inherited diseases ranging from ichthyosis, to myopathies and demyelination. The enzymes for VLCFA biosynthesis are evolutionary conserved and many of the pioneering studies were performed in the model organism Saccharomyces cerevisiae. A growing body of evidence suggests that VLCFA metabolism is intricately regulated to maintain lipid homeostasis. In this review we will describe the metabolism of VLCFAs, how they are synthesized, transported and degraded and how these processes are regulated, focusing on budding yeast. We will review how lipid metabolism and membrane properties are affected by VLCFAs and which impact mutations in the biosynthetic genes have on physiology. We will also briefly describe diseases caused by mis-regulation of VLCFAs in human cells.
Influence of dietary and activity patterns on weight status of Ukrainian school aged children
Authors: Pavlyshyn Halyna , Kozak Kateryna , Furdela Victoriya , Kovalchuk Tetiana , Luchyshyn Nataliia , Haliyash Nataliya 
Published: November 2020

Abstract

Objectives
Dietary patterns and physical activity have significant influence on weight status. Despite numerous studies related to this topic, there is no existing research which provides complete population-based studies that identify the most significant predictors of pediatric obesity. Therefore, it has become the major goal of our study.

Subjects and methods
Three hundred school students between 10 and 17 years of age were participating in our study. All of them are currently attending various schools in city of Ternopil, Ukraine. Anthropometric measurements were performed for all participants. Information about food consumption and physical activity was obtained from distributed questionnaire. Logistic regression was used to identify the significant predictors of obesity.

Results
Lack of physical activity during week (OR=2.59 [95% CI 1.10–6.08]), long screen time in weekdays (OR=2.94 [95% CI 1.13–7.69]) and weekends (OR=3.63 [95% CI 1.55–8.50]), frequent consumption (OR=2.60 [95% CI 1.30–5.19]) and high amounts (OR=2.52 [95% CI 1.26–5.05]) of sweet beverages, fast-food consumption (OR=30.97 [95% CI 1.46–657.60]) and overeating (OR=3.99 [95% CI 1.26–5.05]) have increased chance to be overweight in children 10–17 years of age (p<0.05).

Conclusion
Decreased frequency in moderate physical activity per week, increased amount of sugar-sweetened beverages, fast-food consumption per day and food consumption without hunger, appear to be the most significant predictors of overweight and obesity among Ukrainian school-aged children.
Fluidization characteristics of wide-size-distribution particles in a gas-solid fluidized bed reactor
Authors: Li Chaojie , Wang Weiwen , Guo Xiuling , Duan Jihai 
Published: November 2020

AbstractFluidization characteristics of wide-size-distribution particles in the gas-solid fluidized bed reactor are investigated by applying experiment and computational fluid dynamics (CFD) methods. In this study, three types of narrow-cut particles and two sets of wide-size-distribution particles are used. A model considering particle size distribution is developed in the Eulerian frame, and good agreement between numerical results and experimental data is observed. The particle size distribution has an important effect on the average bed voidage. The axial particle diameter profiles along bed height have a “S” type feature. Minimum fluidization velocity is determined from the standard deviation of pressure fluctuations and bubble dynamics are analyzed based on power spectra. Results indicate that fine particle composition can reduce the minimum fluidization velocity of wide-size-distribution particle system and the bubble diameter in the fluidized bed.
Robust stabilization control of a spatial inverted pendulum using integral sliding mode controller
Authors: Chawla Ishan , Chopra Vikram , Singla Ashish 
Published: November 2020

AbstractFrom the last few decades, inverted pendulums have become a benchmark problem in dynamics and control theory. Due to their inherit nature of nonlinearity, instability and underactuation, these are widely used to verify and implement emerging control techniques. Moreover, the dynamics of inverted pendulum systems resemble many real-world systems such as segways, humanoid robots etc. In the literature, a wide range of controllers had been tested on this problem, out of which, the most robust being the sliding mode controller while the most optimal being the linear quadratic regulator (LQR) controller. The former has a problem of non-robust reachability phase while the later lacks the property of robustness. To address these issues in both the controllers, this paper presents the novel implementation of integral sliding mode controller (ISMC) for stabilization of a spatial inverted pendulum (SIP), also known as anx-y-zinverted pendulum. The structure has three control inputs and five controlled outputs. Mathematical modeling of the system is done using Euler Lagrange approach. ISMC has an advantage of eliminating non-robust reachability phase along with enhancing the robustness of the nominal controller (LQR Controller). To validate the robustness of ISMC to matched uncertainties, an input disturbance is added to the nonlinear model of the system. Simulation results on two different case studies demonstrate that the proposed controller is more robust as compared to conventional LQR controller. Furthermore, the problem of chattering in the controller is dealt by smoothening the controller inputs to the system with insignificant loss in robustness.
Bell-shaped soliton solutions and travelling wave solutions of the fifth-order nonlinear modified Kawahara equation
Authors: Başhan Ali 
Published: November 2020

Abstract
The main aim of this work is to investigate numerical solutions of the two different types of the fifth-order modified Kawahara equation namely bell-shaped soliton solutions and travelling wave solutions that occur thereby the different type of the Korteweg–de Vries equation. For this approach, we have used an effective and simple type of finite difference method namely Crank-Nicolson scheme for time integration and third-order modified cubic B-spline-based differential quadrature method for space integration. We preferred the third-order modified cubic B-splines to solve the fifth-order partial differential equation because of by using low energy, less algebraic process and produce better results than earlier works. To display the efficiency and accuracy of the present fresh approach famous test problems namely bell-shaped single soliton that has negative amplitude and travelling wave solutions that have the both of the positive and negative amplitudes are solved and the error norms L
2 and L
∞ are calculated and compared with earlier works. Comparison of the error norms show that present fresh approach obtained superior results than earlier works by using same parameters. At the same time, two lowest invariants of the test problems during the simulations are calculated and reported. Besides those, relative changes of invariants are computed and reported.
Existence and uniqueness of solutions of nonlinear fractional order problems via a fixed point theorem
Authors: Ahmadi Zahra , Lashkaripour Rahmatollah , Baghani Hamid , Heidarkhani Shapour 
Published: November 2020

Abstract
In this paper, we introduce an Caputo fractional high-order problem with a new boundary condition including two orders

γ
∈

(

n
1

−
1
,

n
1

]

$\gamma \in \left({n}_{1}-1,{n}_{1}\right]$

and

η
∈

(

n
2

−
1
,

n
2

]

$\eta \in \left({n}_{2}-1,{n}_{2}\right]$

for any

n
1

,

n
2

∈
ℕ

${n}_{1},{n}_{2}\in \mathrm{&#x2115;}$

. We deals with existence and uniqueness of solutions for the problem. The approach is based on the Krasnoselskii’s fixed point theorem and contraction mapping principle. Moreover, we present several examples to show the clarification and effectiveness.
A new approach to the bienergy and biangle of a moving particle lying in a surface of lorentzian space
Authors: Körpınar Talat , Ünlütürk Yasin 
Published: November 2020

Abstract
In this research, we study bienergy and biangles of moving particles lying on the surface of Lorentzian 3-space by using their energy and angle values. We present the geometrical characterization of bienergy of the particle in Darboux vector fields depending on surface. We also give the relationship between bienergy of the surface curve and bienergy of the elastic surface curve. We conclude the paper by providing bienergy-curve graphics for different cases.
Effect of mobile phone usage on cognitive functions, sleep pattern, visuospatial ability in Parkinsons patients; a possible correlation with onset of clinical symptoms
Authors: Tuteja Dhruv , Arun Kumar Nayanatara , Pai D. Shivananda , Kunal K. 
Published: November 2020

Abstract

Objectives
The global increase in various neurological disorders is a serious problem to be concerned. This study mainly focused on the changes in cognitive impairment, sleep pattern, visuospatial ability in the Parkinson’s disease (PD) and its possible association with the usage of smartphones durations.

Methods
Parkinson’s patients (40–60 years) visiting neurology clinics were included in this study. Based on their age the grouping was designed as Group I (>60) and Group II (40–60 years). All the patients were evaluated for the various motor symptoms in the presence of a neurologist and graded accordingly. The non-motor symptoms included the analysis cognitive function and sleep patterns. The mobile phone usage time was also collected. The Hoehn and Yahr system was used as assessment tool for gradations of PD signs.

Results
Duration of mobile phone usage in the Parkinson’s patients ranging from 45–60 year was more when compared to the patients aged more than 60 years. The usage of mobile phone did not show significant variation on severity of motor symptoms and cognitive functions. Increased incidence of sleep deprivation was observed in the PD patients aged 40–60 years. Increased usage of mobile phone has been inversely associated with the increased progression of the Parkinson’s disease.

Conclusion
The present study pointed out the significant association of mobile phone usage with the early onset of Parkinsonism.
Alan Bennett’s Single Spies: Lifting the Veil of Personal and Institutional Secrecy
Authors: Park-Finch Heebon 
Published: November 2020

Abstract
This article explores Alan Bennett’s Single Spies (1988), an espionage double bill comprising “An Englishman Abroad” and “A Question of Attribution,” proposing that the personalizing of social, political, and historical themes, as well as the astute documentation of a decaying Englishness and its class system in both plays, are representative of the work of a playwright whose output deserves serious critical attention. The study focuses on how Bennett historicizes the actions of his infamous protagonists (Guy Burgess and Anthony Blunt) while challenging assumptions regarding patriotism. Single Spies is a Cambridge Five franchise, demonstrating the playwright’s characteristic wit, irony, and reflection on personal and national identity, illusion, and sacrifice. The one-act plays each deal with a key figure in the notorious Cambridge spy ring, enhancing the dramatic effect through the use of onstage theatrical and visual allusions. In the first play, references to William Shakespeare’s Hamlet (c 1599), together with English music, highlight Burgess’s duality and the bitter reality of his post-defection life in Russia, while the second play is notable for its use of two paintings (Titian and a Venetian Senator and Allegory of Prudence) as key images and conceits suggesting the gradual uncovering of the Cambridge Five. The paper therefore suggests that Bennett’s ability to lift the veil of personal and institutional secrecy, while airing his own ambivalence, confirms him as a skillful, if academically undervalued, commentator on Englishness.
Storytelling in Apocalyptic Times: Anne Washburn’s Mr. Burns, a Post-Electric Play
Authors: Snyder Laura 
Published: November 2020

Abstract
This article analyzes Anne Washburn’s wildly popular, and often controversial, Mr. Burns, a Post-Electric Play (2012) by focusing on the principal retellings that shape Mr. Burns and delineating how Washburn’s adaptations produce the thematic content of the play. Washburn deftly interweaves a variety of high and low culture source material within the plot. Pandemic and apocalyptic tropes provide the ecofictional narrative base to adaptations of Stephen King’s The Stand (1978), Euripides’s Orestes, Martin Scorsese’s Cape Fear (1991), and a variety of episodes of The Simpsons (1989–). Through these retellings, Mr. Burns metatheatrically chronicles how stories shape listeners and their cultures. When the stories told simply pander to the materialism, greed, and commodification that permeate contemporary global capitalist culture, then society proliferates those solipsistic values. Washburn ultimately argues that, in what may seem like apocalyptic times, storytelling as embodied in the theater arts must instead advocate humanitarian collectivist values.