bluuebunny/crossref_metadata_2025_split huggingface dataset:
Factores pronósticos de gravedad de la infección por SARS-CoV-2
Authors: Rubio Sánchez Ricardo , Lepe Balsalobre Esperanza , Viloria Peñas María del Mar 
Published: November 2020

Resumen

Objetivos
El SARS-CoV-2 es un nuevo coronavirus, responsable de la enfermedad COVID-19. Entre las alteraciones de los parámetros de laboratorio se han descrito leucocitosis con linfopenia, neutrofilia y aumento de dímero D, proteína C reactiva, ferritina, procalcitonina y lactato deshidrogenasa. El objetivo de este estudio ha sido describir las características clínicas y los parámetros de laboratorio de pacientes ingresados con infección por SARS-CoV-2 e identificar factores pronósticos de progresión de la enfermedad.

Materiales
Los pacientes incluidos en el estudio fueron clasificados en dos grupos en función de la gravedad de la infección. Los variables estudiadas fueron los datos demográficos, antecedentes personales, días de ingreso hospitalario, evolución del cuadro neumónico, tratamiento farmacológico y parámetros analíticos. Se realizó un análisis descriptivo de los datos recogidos, así como un análisis multivariante para identificar factores pronósticos de gravedad de la infección.

Resultados
La población de este estudio incluyó a 197 pacientes, considerándose 127 leves y 70 graves. Se encontraron diferencias estadísticamente significativas entre los dos grupos en la mayoría de los parámetros de laboratorio. El análisis multivariante incluyó como factores pronósticos de gravedad la edad avanzada, niveles elevados de leucocitos y concentraciones aumentadas de proteína C reactiva (PCR), γ-glutamiltransferasa (GGT) y procalcitonina (PCT) en el momento del ingreso hospitalario.

Conclusiones
Los factores pronósticos de gravedad de la infección por SARS-CoV-2 identificados en este estudio (edad, leucocitos, PCR, GGT y PCT) permiten predecir el curso de la enfermedad en las etapas iniciales.
Fluctuating neurological symptoms: should I call the neurologist or the hematologist?
Authors: Losa-Rodríguez Rita , Pérez Martínez Carmen , Rodríguez Pérez Gabriel , de la Fuente Graciani Ignacio , Gómez García Lara M. 
Published: November 2020

Abstract

Objectives
The objective of this study was to highlight the role of the clinical laboratory and the relevance of reporting the case immediately to the unit of hematology for the diagnosis and early administration of treatment in the presence of such an urgent hematologic disease as thrombotic thrombocytopenic purpura (TTP).

Case presentation
An elderly patient was referred to the emergency department of our hospital by his general practitioner for speech difficulty, facial asymmetry and weakness in the upper limb. Stroke code was activated. However, laboratory findings (anemia, thrombocytopenia, elevated creatinine, total bilirubin and LDH, negative direct Coombs test) and presence of schistocytes in the peripheral blood smear test were consistent with a completely different diagnosis: TTP thrombotic microangiopathy.

Conclusions
The first diagnostic approach of left hemispheric stroke was not confirmed in the laboratory, with findings of nonautoimmune hemolytic anemia, thrombocytopenia without apparent cause and presence of schistocytes. We should not forget that the clinical manifestations of this condition are widely variable and may include multiorganic dysfunction. Although confirmation of diagnosis is based on ADAMTS-13, its associated high mortalitiy requires immediate treatment on mere suspicion.
A study on the bacterial adhesion of Streptococcus mutans in various dental ceramics: In vitro study
Authors: Bislimi Fuat , Bajevska Jagoda , Garai Mrinmoy , Reka Arianit A. 
Published: November 2020

AbstractStreptococcus mutans(S. mutans) has been identified as a major etiologic agent of human dental caries and forms a significant proportion of oral streptococci in carious lesions. This study investigates the correlation of surface properties (effect of contact angle [CA] and free surface energy) on three restorative materials (zirconia, nickel–chromium–molybdenum alloy and composites) used in dental prosthetics with bacterial adhesion toS. mutans. Ten samples of each material (zirconia, nickel–chromium–molybdenum alloy and composites) of 8 mm diameter and 2.5 mm thickness were used. Aqueous CA measurements, free surface energy and bacterial adhesion to the sample surfaces were performed. Bacterial adhesion is determined by planting samples in the blood agar cultures and using an electron microscope (scanning electron microscopy [SEM]). The highest values of bacterial adhesion are found in composites, followed by the metal alloy, while the lowest values are observed in zirconia. Measurements show that zirconia has 17 bacteria; Ni–Cr–Mo alloy has 65, while the composite has 80 bacteria. The composites showed the highest degree of bacterial adhesion, compared to the other investigated materials, which correlates with the free surface energy of the samples (24.31 mJ/m2for zirconia, 31.78 mJ/m2for Ni–Cr–Mo alloy and 48.82 mJ/m2for the composite).
An improved reduction method for phase stability testing in the single-phase region
Authors: Nichita Dan Vladimir , Secuianu Catinca 
Published: November 2020

AbstractA new reduction method for mixture phase stability testing is proposed, consisting in Newton iterations with a particular set of independent variables and residual functions. The dimension of the problem does not depend on the number of components but on the number of components with nonzero binary interaction parameters in the equation of state. Numerical experiments show an improved convergence behavior, mainly for the domain located outside the stability test limit locus in the pressure–temperature plane, recommending the proposed method for any applications in which the problematic domain is crossed a very large number of times during simulations.
Fast Tensor Product Schwarz Smoothers for High-Order Discontinuous Galerkin Methods
Authors: Witte Julius , Arndt Daniel , Kanschat Guido 
Published: November 2020

Abstract
We discuss the efficient implementation of powerful domain decomposition smoothers for multigrid methods for high-order discontinuous Galerkin (DG) finite element methods. In particular, we study the inversion of matrices associated to mesh cells and to the patches around a vertex, respectively, in order to obtain fast local solvers for additive and multiplicative subspace correction methods. The effort of inverting local matrices for tensor product polynomials of degree k is reduced from

𝒪
⁢

(

k

3
⁢
d

)

{\mathcal{O}(k^{3d})}

to

𝒪
⁢

(

d
⁢

k

d
+
1

)

{\mathcal{O}(dk^{d+1})}

by exploiting the separability of the differential operator and resulting low rank representation of its inverse as a prototype for more general low rank representations in space dimension d.
Explore the application of high-resolution nighttime light remote sensing images in nighttime marine ship detection: A case study of LJ1-01 data
Authors: Zhong Liang , Liu Xiaosheng , Yang Peng , Lin Rizhi 
Published: November 2020

Abstract
Nighttime light remote sensing images show significant application potential in marine ship monitoring, but in areas where ships are densely distributed, the detection accuracy of the current methods is still limited. This article considered the LJ1-01 data as an example, compared with the National Polar-orbiting Partnership (NPP)/Visible Infrared Imaging Radiometer Suite (VIIRS) data, and explored the application of high-resolution nighttime light images in marine ship detection. The radiation values of the aforementioned two images were corrected to achieve consistency, and the interference light sources of the ship light were filtered. Then, when the threshold segmentation and two-parameter constant false alarm rate methods are combined, the ships’ location information was with obtained, and the reliability of the results was analyzed. The results show that the LJ1-01 data can not only record more potential ship light but also distinguish the ship light and background noise in the data. The detection accuracy of the LJ1-01 data in both ship detection methods is significantly higher than that of the NPP/VIIRS data. This study analyzes the characteristics, performance, and application potential of the high-resolution nighttime light data in the detection of marine vessels. The relevant results can provide a reference for the high-precision monitoring of nighttime marine ships.
Slope stability evaluation using backpropagation neural networks and multivariate adaptive regression splines
Authors: Liao Zhihao , Liao Zhiwei 
Published: November 2020

Abstract
Slope stability assessment is a critical concern in construction projects. This study explores the use of multivariate adaptive regression splines (MARS) to capture the intrinsic nonlinear and multidimensional relationship among the parameters that are associated with the evaluation of slope stability. A comparative study of machine learning solutions for slope stability assessment that relied on backpropagation neural network (BPNN) and MARS was conducted. One data set with actual slope collapse events was utilized for model development and to compare the performance of BPNN and MARS. Research results suggest that BPNN and MARS models can model the relationship between the safety factor and the slope parameters. Also, the MARS model has the advantages of computational efficiency and easy interpretation.
On the Skitovich–Darmois theorem for complex and quaternion random variables
Authors: Feldman Gennadiy 
Published: November 2020

Abstract
We prove the following theorem. Let

α
=

a
+

i
⁢
b

{\alpha=a+ib}

be a
nonzero complex number. Then the following statements hold: (i)
Let either

b
≠
0

{b\neq 0}

or

b
=
0

{b=0}

and

a
>
0

{a>0}

. Let

ξ
1

{\xi_{1}}

and

ξ
2

{\xi_{2}}

be
independent complex random variables. Assume that the linear forms

L
1

=

ξ
1

+

ξ
2

{L_{1}=\xi_{1}+\xi_{2}}

and

L
2

=

ξ
1

+

α
⁢

ξ
2

{L_{2}=\xi_{1}+\alpha\xi_{2}}

are independent. Then

ξ
j

{\xi_{j}}

are degenerate random variables. (ii) Let

b
=
0

{b=0}

and

a
<
0

{a<0}

.
Then there exist complex Gaussian random variables in the wide sense

ξ
1

{\xi_{1}}

and

ξ
2

{\xi_{2}}

such that they are not complex Gaussian random
variables in the narrow sense, whereas the linear forms

L
1

=

ξ
1

+

ξ
2

{L_{1}=\xi_{1}+\xi_{2}}

and

L
2

=

ξ
1

+

α
⁢

ξ
2

{L_{2}=\xi_{1}+\alpha\xi_{2}}

are independent.
Hecke
*
*
-algebras on locally compact hypergroups
Authors: Tabatabaie Seyyed Mohammad , Sadathoseyni Bentolhoda 
Published: November 2020

Abstract
In this paper, for a discrete hypergroup K and its subhypergroup H, we initiate the related Hecke

*

{*}

-algebra which is an extension of the classical one, and study its basic properties. Especially, we give a necessary and sufficient condition (named (β)) for this algebra to be associative. Also, we show that this new structure is an associative

*

{*}

-algebra if and only if K is a locally compact group.
Effects of quenching and partitioning (Q&P) technology on microstructure and mechanical properties of VC particulate reinforced wear-resistant alloy
Authors: Zhang Bo , Zeng Song-Sheng 
Published: November 2020

AbstractTo improve the wear resistance, toughness, and hardness of alloy, the quenching and partitioning (Q&P) technology was applied in the VC particulate (VCp) reinforced wear-resistant alloys, which were prepared by adding different Mn contents (2–5 wt%). The effects of partitioning time on the distribution of alloying elements shown by EDX mapping, retained austenite fraction, microstructure, macro-hardness, and impact toughness were investigated. The results showed that the effect of carbon partitioning time on the hard phase of the wear-resistant alloy was not significant. However, the carbon partitioning time greatly affected the microstructure and the mechanical properties of alloys, such as retained austenite, hardness, and impact toughness, and there was also a strong correlation with the Mn content. When the Mn content was lower (2.51 wt%), the retained austenite content increased with the carbon partitioning time, which resulted in decreased hardness and increased impact toughness. However, when the Mn content was higher (4.52 wt%), the opposite results occurred. This study provided an application of the Q&P technology in a VCp-reinforced wear-resistant alloy.
Gr. ἀρτιεπής, ved. ṛtvíya‑ vā́k‑, jav. raϑβiiavacah‑
Authors: Massetti Laura 
Published: November 2020

Zusammenfassung
The Homeric compound ἀρτιεπής can be understood as a possessive-compound with a case-form or an adverb in the first member. The compound can be connected to the idea of [CORRECT/RIGHT - SAY], and as such to the expression ἄρτια βάζειν ‘to tell right things’ (Hom.). A collocation [*(H)ar‑ - *u̯eku̯‑] lies at the basis of several IIr. compounds and collocations that are etymologically related to ἀρτιεπής: Ved. ṛtavāká‑, Av. arəm.uxti‑, Ved. [ṛtám - say]. Among others, some striking matches can be identified: Ved. ṛtvíya‑ vā́k‑ and YAv. raϑβiia‑ vacah‑, as well as YAv. vacah‑ - ratumant‑, where the tu‑derivatives parallel the ti‑derivatives (Gk. ἄρτι : *arti‑ or *art‑i‑); YAv. arš.uxδa‑, arš.vacah‑ (OAv. ərəš.vacah‑) which may be interpreted as structural matches, probably containing an adverb as first member of compound.
History of the Albanian present suffix ‑i/‑ën from Proto-Indo-European to the modern dialects
Authors: Lopuhaä-Zwakenberg Milan 
Published: November 2020

Abstract
In standard Albanian, there is a restricted class of three intransitive verbs (hip-, ec-, ik-) that shows a suffix ‑i/‑ën in the conjugation of the present singular. In dialects and in Old Albanian, however, this suffix is more prolific. This paper studies the history of this suffix and its function by comparing its use in a wide range of Albanian dialects. Based on the dialectal data a Proto- Albanian inchoative/imperfective function inherited from Proto-Indo-European can be reconstructed for the suffix. This function is still present in the Arbëresh dialect of San Costantino Albanese. As the suffix lost its semantic component, it became a marker for the imperfect in Tosk and southern Geg, while in northern Geg the suffix is used as a present marker in verbs where ambiguity with the imperfect could arise. The verbs hip-, ec-, and ik- were originally transitive verbs which were intransitivized by the suffix ‑i/‑ën. As their original transitive meaning was lost, the suffix was obligatory in these verbs in Proto-Albanian already, a situation that is continued in almost all present dialects.
Zur Entwicklung von ἑκὼν εἶναι im Altgriechischen
Authors: Conti Luz 
Published: November 2020

Zusammenfassung
In the construction ἑκὼν εἶναι, grammars identify the function of εἶναι either with the function of an old dative or accusative. However, some scholars consider εἶναι redundant because it is difficult to ascertain its exact semantic and syntactic function. In any case, neither the original meaning of εἶναι in this construction nor the functional relationship of ἑκών with the infinitive has been described satisfactorily. The semantic, syntactic, and pragmatic differences between ἑκών and ἑκὼν εἶναι have not been determined either. This paper analyzes both ἑκών and εἶναι based on a selection of works of different chronology and genres in order to propose both a diachronic and a synchronic explanation of the construction ἑκὼν εἶναι. The data analysis supports the interpretation of εἶναι as a limitative infinitive that developed into a focusing element. In sentences with negative polarity, ἑκὼν εἶναι has regularly evolved into a parenthetical, specifically a self-correction parenthetical.
Syntax of the Hittite infinitive
Authors: Sideltsev Andrei V. 
Published: November 2020

Abstract
The paper reevaluates the evidence for dative case marking of the direct object of the infinitive in Hittite against the Indo-European and cross-linguistic background. It provides a full corpus of relevant examples in Hittite, suggests a new taxonomy of them and proposes that a syntactic rule has to be formulated to account for the non-finite contexts where dative case marks the direct object of the infinitive in Hittite.
Characterization and prevalence of obesity among normal weight college students
Authors: Anderson Kara C. , Hirsch Katie R. , Peterjohn Austin M. , Blue Malia N.M. , Pihoker Alexis A. , Ward Dianne S. , Ondrak Kristin S. , Smith-Ryan Abbie E. 
Published: November 2020

Abstract
Normal weight obesity (NWO) describes individuals who have a normal weight body mass index (BMI), but have an unhealthy amount of body fat. Based on the life-long habits that develop during college, exploring NWO among a college-aged population may be essential in identifying and preventing obesity that develops in early adulthood. This study aimed to characterize NWO among young adults with normal weight BMI. 94 college students (Mean ± SD: Age: 19.6 ± 1.5 yrs; BMI: 21.9 ± 1.8 kg/m2) enrolled during the Fall semester (Aug-Oct) were assessed for body composition by dual energy X-ray absorptiometry to determine body fat percentage, fat mass, lean mass and trunk fat; lifestyle habits were characterized from validated questionnaires. Mean arterial pressure and metabolic biomarkers [total cholesterol, high density lipoproteins, non-high density lipoproteins, and glucose] were evaluated for cardiometabolic health. NWO was defined using data from the National Health and Nutrition Examination Survey (NHANES) for body fat percentage. Data was analyzed by group (NWO vs NWL) and sex. with independent t-tests to investigate continuous data, and chi-square test of independence for categorical data. Rates of NWO for the total sample were 13.8%. Males (n=30) had a higher rate of NWO (26.7%) compared to females (n=64; 7.8%). NWO individuals had higher fat mass (p=0.024), trunk fat (p<0.001), and larger waist to hip ratio (p<0.001) than normal weight lean. NWO also engaged in less vigorous physical activity (p=0.043). The occurrence of NWO among otherwise healthy college students is evident. Identification of these individuals may be an effective component for obesity prevention and treatment. Determining feasible methods to measure body fat in this population is essential, as BMI may mask obesity in a young adult population.
Separation of copper and indium from zinc hydrometallurgy solution
Authors: Deng Zhigan , Zheng Yu , Li Xingbin , Wei Chang , Li Minting , Li Cunxiong , Fan Gang 
Published: November 2020

Abstract
The separation and recovery of copper and indium from a solution arising from the reductive leaching of a zinc leaching residue was studied. Copper was enriched into a copper precipitate produced by iron powder precipitation; indium was hydrolyzed and enriched into a gypsum indium precipitate produced by limestone adjustment of pH. Separation and recovery of both copper and indium were achieved. The results showed that precipitation of copper(II) and arsenic(III) as Cu2O and Cu3As is thermodynamically feasible by adding iron powder to the reductive leach of a zinc leaching residue. Increasing the iron powder addition and reaction temperature promoted the formation of Cu2O and Cu3As. In the process of neutralizing and precipitating indium by adjusting the pH using limestone, indium was mainly concentrated in the precipitate by hydrolytic precipitation. The pH of the neutralization endpoint plays a decisive role in this hydrolytic enrichment. The extent of indium precipitation exceeded 98%, and the indium content of the precipitate reached 3.6 kg/t. Addition of limestone balances the acid across the entire production process. The main phase in the gypsum indium precipitate was CaSO4·2H2O, the stable properties of which create favorable conditions for the recovery of indium in subsequent steps.
Analysis of (α,β)-order coupled implicit Caputo fractional differential equations using topological degree method
Authors: Riaz Usman , Zada Akbar 
Published: November 2020

AbstractThis article is devoted to establish the existence of solution of(α,β)$\left(\alpha ,\beta \right)$-order coupled implicit fractional differential equation with initial conditions, using Laplace transform method. The topological degree theory is used to obtain sufficient conditions for uniqueness and at least one solution of the considered system. Beside this, Ulam’s type stabilities are discussed for the proposed system. To support our main results, we present an example.
Economic Spill-Over of Food Quality Schemes on Their Territory
Authors: Donati Michele , Wilkinson Adam , Veneziani Mario , Antonioli Federico , Arfini Filippo , Bodini Antonio , Amilien Virginie , Csillag Peter , Ferrer-Pérez Hugo , Gkatsikos Alexandros , Gauvrit Lisa , Gil Chema , Hoàng Việt , Knutsen Steinnes Kamilla , Lilavanichakul Apichaya , Mattas Konstadinos , Napasintuwong Orachos , Nguyễn An , Nguyen Mai , Papadopoulos Ioannis , Ristic Bojan , Stojanovic Zaklina , Tomić Maksan Marina , Török Áron , Tsakiridou Efthimia , Bellassen Valentin 
Published: November 2020

Abstract
We study the effect of a set of food quality scheme (FQS) products within the local economy using a local multiplier approach based on LM3 methodology. To evaluate the effective contribution within the local area, we compare each FQS product with its equivalent standard/conventional counterpart. Local multiplier allows us to track the financial flows converging within the local area at the different levels of the supply chain so that we can measure the FQS product role in local economic activation. Overall, the FQS products exhibit a higher positive contribution to the local economy than the standard references. However, there is significant heterogeneity in the impact according to the product categories. In the case of vegetal products, the local economic advantage due to FQS is 7% higher than the reference products, but the statistical tests reject the null hypothesis that the medians are significantly different from zero. On the contrary, animal products exhibit a larger contribution of FQS than the standard counterparts (+24%). The PGI products (+25%) produce the major effect, while PDO products show a median difference lower (+6%). The organic and non-organic products seem to be substantially equivalent in terms of contribution to the local economy, due to the similarity in the downstream processing phase.