bluuebunny/crossref_metadata_2025 huggingface dataset:
Researching intersectionality in media studies: Theoretical approaches, methods and applications in communication and media research practice
Authors: Gouma Assimina , Dorer Johanna
Published: December 2019

Intersectionality is a critical approach to theorizing and exploring the interlocking of social inequality categories such as gender, race, ethnicity, class and sexuality in various levels of policies, social discourses, institutions and subject positionings. While social discourses do not arise in isolation from an all-encompassing media world, media, as co-producers of social power relations, are particularly interesting for the concept of intersectionality. However, the intersectional approach is rather a research field at the margins of German communication studies. This article discusses the theoretical prerequisites and methodological implications of intersectionality and provides examples of how an empirical implementation is possible in media research.
Precarity and coloniality in the Brazilian education field: an analysis of the Law no. 13,415/17 and the final years of the Primary School in the National Common Curricular Base
Authors: Carneiro Vannessa Alves
Published: December 2019

This article aims to analyse the current proposal for Brazilian Primary and Secondary School, particularly after the implementation of the Law no. 13,415/17, which modified Brazilian’s national education guidelines and bases, regulated by the Law no. 9,394/96. Specifically, I propose to reflect upon this new law, how it shapes a new National Education Project and its impact on ‘historically oppressed groups’, such as Afrodescendant and Indigenous populations. I will also point out how these groups are framed by the new contents (and knowledge) of the Base Nacional Comum Curricular [National Common Curricular Base] (BNCC), focusing in the final years of the Primary School (5th to 9th grade). Against this backdrop, I will explore, within the contemporary Brazilian education field, the compatibility of ‘precarity’ (Butler, 2009) and coloniality in relation to institutional racism and Eurocentric (Western) thought. Mainly based on the ‘Ecology of Knowledges’ by Santos (2007), I propose the necessity to work on both: on the recognition of the bases of these groups, that needs a critical and regulated education about their histories, contents and knowledge, which should be explicitly exposed in a transversal way in the BNCC; and the deconstruction of the vision of education focused only on the market logic, rather than an education for citizenship, equity, and diversity. Finally, my methodology has a qualitative approach, based on secondary documentation sources (bibliographic research), passing through diverse research specifications (descriptive, exploratory and explanatory analysis).
Az iskolához való viszony fogalmi értelmezéseinek összehasonlító vizsgálata
Authors: Czető Krisztina
Published: December 2019

A tanulók iskolához való viszonyulásainak, az iskolai életben való részvételük minőségének megragadására a nemzetközi szakirodalomban különböző elméleti konstrukciókkal találkozhatunk (vö. Libbey, 2004; Stern, 2012).  Ezek, az iskola iránti attitűdöket különböző fogalmakkal írják le, és a koncepcionális tisztázatlanság, a fogalmi átfedések megnehezítik a jelenség kutatását is (Libbey, 2004). A széttartó megközelítések az iskolai élet különböző területeire fókuszálnak, ugyanakkor számos tartalmi egyezést is mutatnak. Jelen elméleti kutatás a tanulók iskolához kapcsolódó kognitív, affektív és viselkedéses viszonyulásait, azok mintázatait, valamint az iskolai mindennapokban való részvételük minőségét megragadó konstruktumok összehasonlító-elemző vizsgálatával foglalkozik. Az iskolai attitűdöt az iskolához való érzelmi-társas közelség érzésén keresztül megragadó konstruktumok (’school connectedness/belonging/bond’) a társas kapcsolatok minőségét, az azokba való bevonódás és ráfordítás mértékét, valamint a társaktól és tanároktól megtapasztalt elfogadás, támogatás érzését állítják a középpontba (vö. Lohmeier és Lee, 2012; Goodenow és Grady, 1993; Jenkins, 1997). Az elköteleződés/bevonódás (’engagement’) mint meta-konstruktum pedig a tanulók affektív, kognitív és viselkedéses mintázatait jelöli, és itt is megfigyelhető egyfajta tartalmi diverzitás az összetevők számát és tartalmát illetően a különböző megközelítésekben (vö. Fredricks és mtsai.,2004; Appleton és mtsai., 2008; Griffiths és mtsai., 2009; Reschly és Christenson, 2012). Az elköteleződés/bevonódás több komponensű modelljei komplex képet adhatnak a tanulók iskolához fűződő kapcsolatáról és annak dimnezióiról. Az iskolai attitűd koncepcionális rendszerező vizsgálata, és ezek alapján kutatásának jelentősége, hogy az iskolai iránti viszonyulások meghatározzák a tanulói motivációt, befolyásolják a társas kapcsolatok minőségét, az egyén szubjektív jóllétét, ezeken keresztül pedig hatással vannak énhatékonyság érzésére és iskolai teljesítményre is.
Bowel Obstruction and Hydronephrosis Due to an Over-the-Scope Clip
Authors: Tung William , Shultz John R. , Schirmer Bruce D. , Copland Andrew C. , Wang Andrew Y.
Published: December 2019

An over-the-scope clip is a type of endoscopically placed clip used to treat gastrointestinal perforation, bleeding, or fistula. After the defect heals, the clip usually passes uneventfully through the gastrointestinal tract. An uncommon complication of over-the-scope clip placement is intestinal obstruction caused by luminal stenosis at the site of clip placement. Intestinal obstruction can rarely cause other downstream complications such as hydronephrosis from extrinsic compression of the urinary tract. We report a rare case of bilateral hydronephrosis caused by bowel obstruction from a migrated endoscopically placed clip.
SABANAS CULTIVADAS COMO SUMIDEROS DE CARBONO EN UN SUELO ÁCIDO-ARENOSO DE BAJA FERTILIDAD NATURAL
Authors: OJEDA FALCÓN A. D. , LÓPEZ HERNÁNDEZ D,
Published: December 2019

Un Arenic Paleustults de sabana fue cultivado con especies adaptadas y fertilizado con dosis únicas de 1,0 y 0,3 Mg ha -1 de roca fosfórica (RF) y NPK, respectivamente. Un muestreo aleatorio de suelo, en los tratamientos, sabana natural (SN) y sabana cultivada (SC), a las profundidades de 0-3,0; 3,1-6,0 y 6,1-10,0 cm, permitió las determinaciones de textura, COS, fracción ligera de la materia orgánica del suelo (FL MOS), pHagua, pH KCl , densidad aparente (Da), contenidos totales de nitrógeno (N) y fósforo (P), P-disponible y bases intercambiables. Los análisis estadísticos incluyeron: ANOVA, ACP y un análisis de ruta, que generó modelos estadísticos multicausales. La SC mostró cambios significativos al acumular 2.970 kg ha -1 de COS y presentar una densidad de carga neta coloidal (DCNC) 50% más electronegativa, que se relacionó con la FL MOS, el COS y la Da, en contraste con la SN, cuyos factores de variación fueron de naturaleza inorgánicas.
PRODUCTIVIDAD Y COBERTURA DE CULTIVARES DE ALFALFA (Medicago sativa L.) DE DIFERENTES GRADOS DE REPOSO INVERNAL BAJO DOS FRECUENCIAS DE CORTE
Authors: ORDOÑEZ V. N. , NESCIER I. De los M. , DOVIS V. L. , GIECO J. O. , BONVIN C. , RIBERO G. G. , WALKER G. A.
Published: December 2019

El objetivo de este trabajo fue evaluar la producción de forraje y porcentaje de cobertura de 3 cultivares de alfalfa con distinto grado de reposo invernal (GRI), sometidas a dos frecuencias de corte durante un año. Se utilizaron tres cultivares (GR6-Verzy), (GR9-Mecha) y (GR10-Ruano). El diseño experimental fue de parcelas divididas con cuatro repeticiones. Se establecieron 2 tratamientos definidos por los intervalos entre cortes: T1: 25 días y T2: 35 días. Estos fueron precisados para las estaciones de primavera, verano y otoño. En invierno el intervalo fue de 45 y 55 días en T1 y T2, respectivamente. Las variables evaluadas fueron: rendimiento de forraje por corte, relación hoja/tallo (H/T), relación (hoja+tallo)/raíz (H+T)/R y el porcentaje de cobertura bajo las frecuencias planteadas. La producción de materia seca (MS) anual para T1 se incrementó. Los valores de productividad no mostraron diferencias significativas entre cultivares y entre tratamientos. Se hallaron diferencias significativas entre tratamientos para la relación H/T. Se observó interacción entre cultivares y tratamientos en la cobertura de la pastura.
El papel de la dieta mediática en la experiencia migratoria de la comunidad hispanoamericana. Repensando la recepción a través de las familias, las redes y los medios
Authors: Concepción Sepúlveda Luis Gilberto , Medina Cambrón Alfons , Ballano Macías Sonia
Published: December 2019

La dieta y los hábitos mediáticos de las comunidades inmigrantes han sido estudiados desde una perspectiva alejada de las propias interpretaciones de los protagonistas. En este artículo pondremos la mirada en la experiencia mediática de estos nuevos miembros de la sociedad de acogida desde la percepción que construyen de dichos hábitos. El trabajo de campo incluye 8 grupos de discusión con individuos de 5 nacionalidades hispanoamericanas. Asimismo, se realizaron 18 entrevistas en profundidad a diferentes perfiles representativos de la comunidad hispanoamericana. Los resultados nos permiten mostrar cómo la dieta y los hábitos mediáticos son reconstruidos a través de las interacciones, creando una experiencia y una identidad que dotan a la comunidad diaspórica de un nuevo sentido del proceso migratorio. Se activan mecanismos de solidaridad entre hispanoamericanos; se impulsan espacios de encuentro y comunicación y se establecen canales más sólidos para la articulación de la acción cívica, política y cultural dentro del propio grupo.
Las redes de apoyo social online y offline en los inmigrantes de Málaga (España)
Authors: Millán-Franco Mario , Gómez-Jacinto Luis , Hombrados-Mendieta María Isabel , García-Cid Alba
Published: December 2019

Como consecuencia del desarrollo de las Tecnologías de la Información y la Comunicación el aumento de la velocidad de conexión de los inmigrantes internacionales con sus países de origen y destino ha supuesto un hito de notables dimensiones. Esta investigación analiza cómo las redes de apoyo online y offline influyen en la percepción de apoyo social, sentido de comunidad y satisfacción vital de los inmigrantes. La metodología utilizada es de corte cuantitativo, con una muestra representativa de 1563 inmigrantes residentes en Málaga (España). Los resultados evidencian el beneficio que supone para los inmigrantes disponer de una red de apoyo amplia y heterogénea, posicionándose como un elemento de gran valor para la percepción de apoyo social, sentido de comunidad y satisfacción vital. Los hallazgos defienden la funcionalidad de la comunicación mediada por la tecnología durante la aculturación y la necesidad de ayudar a los inmigrantes a construir sus propias redes sociales.
Accumulation of α-2,6-sialyoglycoproteins in the muscle sarcoplasm due to Trichinella sp. invasion
Authors: Milcheva Rositsa , Janega Pavol , Celec Peter , Petkova Svetlozara , Hurniková Zuzana , Izrael-Vlková Barbora , Todorova Katerina , Babál Pavel
Published: December 2019

The sialylation of the glycoproteins in skeletal muscle tissue is not well investigated, even though the essential role of the sialic acids for the proper muscular function has been proven by many researchers. The invasion of the parasitic nematodeTrichinella spiralisin the muscles with subsequent formation of Nurse cell-parasite complex initiates increased accumulation of sialylated glycoproteins within the affected area of the muscle fiber. The aim of this study is to describe some details of the α-2,6-sialylation in invaded muscle cells. Asynchronous invasion with infectiousT. spiralislarvae was experimentally induced in mice. The areas of the occupied sarcoplasm were reactive towards α-2,6-sialic acid specificSambucus nigraagglutinin during the whole process of transformation to a Nurse cell.The cytoplasm of the developing Nurse cell reacted withHelix pomatiaagglutinin,Arachis hypogeaagglutinin andVicia villosalectin-B4 after neuraminidase pretreatment.Up-regulation of the enzyme ST6GalNAc1 and down-regulation of the enzyme ST6GalNAc3 were detected throughout the course of this study. The results from our study assumed accumulation of sialyl-Tn-Ag, 6`-sialyl lactosamine, SiA-α-2,6-Gal-β-1,3-GalNAc-α-Ser/Thr and Gal-β-1,3-GalNAc(SiA-α-2,6-)-α-1-Ser/Thr oligosaccharide structures into the occupied sarcoplasm. Further investigations in this domain will develop the understanding about the amazing adaptive capabilities of skeletal muscle tissue.
The effect of size of black cherry stumps on the composition of fungal communities colonising stumps
Authors: Robert Korzeniewicz , Baranowska Marlena , Behnke-Borowczyk Jolanta
Published: December 2019

We investigated fungal communities colonising black cherry stumps. We tested the hypothesis that black cherry stumps of greater diameter should be characterised by more diverse fungal communities than stumps of smaller diameter. The material for analyses came from Podanin Forest District. DNA was extracted using a Plant Genomic DNA purification kit. The results were subjected to bioinformatic analysis and statistical analysis. The OTU sequences were compared using the BLAST algorithm with reference sequences from the UNITE database. In total, 8192 raw sequences were obtained from samples of black cherry stumps applying the Illumina sequencing technique. The results of the statistical analysis indicate a trend towards increased diversity in bigger black cherry stumps. The dominant share of fungi associated with wood decomposition indicates the progressing process of decomposition in stumps. Identification of the role and functions of the individual components of fungal communities colonising stumps may provide insight into the overall ecology of these organisms and provide a basis for improved plant protection, with a view to limiting the occurrence of black cherries in the future in undesirable locations outside their natural range.
Adsorption of copper ions on Magnolia officinalis residues after solid-phase fermentation with Phanerochaete chrysosporium
Authors: Tao Fengyun , Liu Yangping , Chen Junliang , Wang Peng , Huo Qing
Published: December 2019

The disposal of residues while manufacturing Chinese medicine has always been an issue that concerns pharmaceutical factories. Phanerochaete chrysosporium was inoculated into the residues of Magnolia officinalis for solid-phase fermentation to enzymatically hydrolyze the lignin in the residues and thus to improve the efficiency of removal of the copper ions from residues for the utilization of residues from Chinese medicine. With the increase in activities of lignin-degrading enzymes, especially during the fermentation days 6 to 9, the removal rate of copper ions using M. officinalis residues increased dramatically. The rate of removal reached the maximum on the 14th day and was 3.15 times higher than the initial value. The rate of adsorption of copper ions on the fermentation-modified M. officinalis residues followed the pseudo-second-order kinetics. The adsorption isotherms were consistent with the Freundlich models. The adsorption enthalpy was positive, indicating that it was endothermic and elevation in temperature was favorable to this adsorption process. The adsorption free energy was negative, implying the spontaneity of the process. The copper ions adsorbed could be effectively recovered using 0.2 M hydrochloric acid solution. After five successive cycles of adsorption-regeneration, the fermentation-modified M. officinalis residues exhibited a stable adsorption capacity and greater reusability. The M. officinalis residues fermented with P. chrysosporium are low-cost and environmentally friendly copper ions adsorbent, and this preparation technique realizes the optimum utilization of Chinese medicine residues.
Capacity, quasi-local mass, and singular fill-ins
Authors: Mantoulidis Christos , Miao Pengzi , Tam Luen-Fai
Published: December 2019

We derive new inequalities between the boundary capacity of an asymptotically flat 3-manifold with nonnegative scalar curvature and boundary quantities that relate to quasi-local mass; one relates to Brown–York mass and the other is new. We argue by recasting the setup to the study of mean-convex fill-ins with nonnegative scalar curvature and, in the process, we consider fill-ins with singular metrics, which may have independent interest. Among other things, our work yields new variational characterizations of Riemannian Schwarzschild manifolds and new comparison results for surfaces in them.
The Jensen–Pólya program for various L-functions
Authors: Wagner Ian
Published: December 2019

Pólya proved in 1927 that the Riemann hypothesis is equivalent to the hyperbolicity of all of the Jensen polynomials of degree d and shift n for the Riemann Xi-function. Recently, Griffin, Ono, Rolen, and Zagier [M. Griffin, K. Ono, L. Rolen and D. Zagier,
Jensen polynomials for the Riemann zeta function and other sequences,
Proc. Natl. Acad. Sci. USA 116 2019, 23, 11103–11110] proved that for each degree

d
≥
1

{d\geq 1}

all of the Jensen polynomials for the Riemann Xi-function are hyperbolic except for possibly finitely many n. Here we extend their work by showing that the same statement is true for suitable L-functions. This offers evidence for the generalized Riemann hypothesis.
Congruences in Hermitian Jacobi and Hermitian modular forms
Authors: Meher Jaban , Singh Sujeet Kumar
Published: December 2019

In this paper, we first prove an isomorphism between certain spaces of Jacobi forms.
Using this isomorphism, we study the mod p theory of Hermitian Jacobi forms over

ℚ
⁢

(
i
)

{\mathbb{Q}(i)}

.
We then apply the mod p theory of Hermitian Jacobi forms to characterize

U
⁢

(
p
)

{U(p)}

congruences and to study Ramanujan-type congruences for Hermitian Jacobi forms and Hermitian modular forms of degree 2 over

ℚ
⁢

(
i
)

{\mathbb{Q}(i)}

.
Assessment of the hydrocarbon potentiality of the Late Jurassic formations of NW Iraq: A case study based on TOC and Rock-Eval pyrolysis in selected oil-wells
Authors: J. Al-Atroshi Swar , H. Sherwani Govand , F. Al-Naqshbandi Srood
Published: December 2019

The Late Jurassic Naokelekan and Barsarin formations of northwestern Iraq have been investigated in three wells to assess their potentiality for hydrocarbon generation.

The results of Total Organic Carbon content (TOC) and Rock-Eval Pyrolysis reveal fair to excellent content of hydrocarbon and suggest that the depositional conditions were suitable for the production and preservation of organic matter. The Thermal Maturity Proxy indicates that the studied formations were mature stage of hydrocarbon generation, with an exception of three samples from the Naokelekan Formation in Shaikhan-8 well, and two samples from the Barsarin Formation in Atrush-1 and Shaikhan-8 wells were at an immature stage.

The S1and TOC relationship shows that all the samples are indigenous in nature. Most of samples from the Naokelekan Formation belong to kerogen Type II/III, and that in the Barsarin Formation belongs to kerogen Type II is dominant.

The Pr/Ph, Pr/n-C17and Ph/n-C18ratios for the extracted bitumen of both the formations indicate that they were originated from marine organic matter under reducing conditions. Theδ13CSatandδ13CArorange from −28.7 to −27.7‰ and −28.8 to −27.7‰ respectively. These biomarkers show high contribution of marine organic matters preserved under relatively anoxic conditions in the studied formations.
Anthonotha macrophylla P. Beauv (Caesalpiniaceae) aqueous extract exhibits antiestrogenic effects in vitro and in vivo
Authors: Gueyo Telesphore Nanbo , Mvondo Marie Alfrede , Zingue Stéphane , Sipping Marius Trésor Kemegne , Kenmogne Larissa Vanelle , Ndinteh Derek Tantoh , Njamen Dieudonné
Published: December 2019

Background

Phytoestrogens are natural compounds known as natural selective estrogen receptor modulators used as alternatives against estrogen-dependent cancers. This study aims to evaluate the antiestrogenic effects of Anthonotha macrophylla, a plant used to treat cancer in Cameroon.

Methods

The estrogenic/antiestrogenic activities of A. macrophylla aqueous extract were evaluated in vitro using MCF-7 cell proliferation assay. Moreover, a classical uterotrophic test was carried out to evaluate the antiestrogenic effects of A. macrophylla in rats. Changes in the uterus, vagina, and mammary glands were used as endpoints of estrogenicity.

Results

Anthonotha macrophylla induced antiestrogenic effects in vitro at all the tested concentrations by inhibiting estradiol-induced MCF-7 cell proliferation (p < 0.001). In vivo, a coadministration of estradiol with A. macrophylla extract led to the decrease of uterine [150 (p < 0.05) and 300 (p < 0.01) mg/kg body weight (BW)] and vaginal [75 (p < 0.01) and 300 (p < 0.05) mg/kg BW] epithelial thickness. In addition, a reduction in the mammary gland acini lumen’s diameter was also observed at 75 and 150 mg/kg. Gas chromatography-time-of-flight-mass spectrometry analysis showed that phenolic acid derivatives are present in A. macrophylla extract, which are well known to be endowed with estrogenic/antiestrogenic properties. The LD50 of A. macrophylla was estimated to be less than 2000 mg/kg.

Conclusions

Anthonotha macrophylla aqueous extract has antiestrogenic properties. This could promote more studies to explore its ability to prevent estrogen-dependent cancers.
Some generalized characters associated to a transitive permutation group
Authors: Knapp Wolfgang , Schmid Peter
Published: December 2019

Let G be a finite transitive permutation group of degree n, with point stabilizer

H
≠
1

{H\neq 1}

and permutation character π.
For every positive integer t, we consider the generalized character

ψ
t

=

ρ
G

-

t
⁢

(

π
-

1
G

)

{\psi_{t}=\rho_{G}-t(\pi-1_{G})}

, where

ρ
G

{\rho_{G}}

is the regular character of G and

1
G

{1_{G}}

the 1-character.
We give necessary and sufficient conditions on t (and G) which guarantee that

ψ
t

{\psi_{t}}

is a character of G.
A necessary condition is that

t
≤

min
⁡

{

n
-
1

,

|
H
|

}

{t\leq\min\{n-1,\lvert H\rvert\}}

, and it turns out that

ψ
t

{\psi_{t}}

is a character of G for

t
=

n
-
1

{t=n-1}

resp.

t
=

|
H
|

{t=\lvert H\rvert}

precisely when G is 2-transitive resp. a Frobenius group.
Temperature-dependent negative Poisson’s ratio of monolayer graphene: Prediction from molecular dynamics simulations
Authors: Fan Yin , Xiang Yang , Shen Hui-Shen
Published: December 2019

A temperature-dependent intrinsic property of monolayer graphene, the negative Poisson’s ratio (NPR), is investigated in the present study. The classical molecular dynamics (MD) method is employed and the Erhart-Albe hybrid potential, i.e. the combination of the reactive empirical bond order (REBO) and the Tersoff potentials, is used for the graphene sheet in the numerical simulation. In the simulation process, the graphene sheet is assumed to be free standing with in-plane periodical boundary condition and under an ambient temperature up to 1000 K. Our study shows that the graphene NPR is decreased with the increase of temperature. Besides, we also perform the simulation of the graphene negative temperature expansion coefficient (NTEC) as an indirect validation of the present MD model. The characteristics of the nonlinear variations for both the NPR and the NTEC of a pristine graphene sheet are investigated. Our MD results at low temperature (0.1 K) further prove the intrinsic and anisotropic property of NPR for graphene.
Application of bio-based solvents for biocatalysed synthesis of amides with
Pseudomonas stutzeri
lipase (PSL)
Authors: Paggiola Giulia , Derrien Nolwenn , Moseley Jonathan D. , Green Anthony , Flitsch Sabine L. , Clark James H. , McElroy Con Robert , Hunt Andrew J.
Published: December 2019

Bio-based solvents were investigated for the biocatalysed amidation reactions of various ester-amine combinations by Pseudomonas stutzeri lipase (PSL). Reactions were undertaken in a range of green and potentially bio-based solvents including terpinolene, p-cymene, limonene, 2-methyl THF, ɣ-valerolactone, propylene carbonate, dimethyl isosorbide, glycerol triacetate and water. Solvent screenings demonstrated the importance and potential of using non-polar bio-based solvents for favouring aminolysis over hydrolysis; whilst substrate screenings highlighted the unfavourable impact of reactants bearing bulky para- or 4-substituents. Renewable terpene-based solvents (terpinolene, p-cymene, D-limonene) were demonstrated to be suitable bio-based media for PSL amidation reactions. Such solvents could provide a greener and more sustainable alternative to traditional petrochemical derived non-polar solvents. Importantly, once the enzyme (either PSL or CALB) binds with a bulky para-substituted substrate, only small reagents are able to access the active site. This therefore limits the possibility for aminolysis to take place, thereby promoting the hydrolysis. This mechanism of binding supports the widely accepted ‘Ping Pong – Bi Bi’ mechanism used to describe enzyme kinetics. The work highlights the need to further investigate enzyme activity in relation to para- or 4-substituted substrates. A priority in PSL chemistry remains a methodology to tackle the competing hydrolysis reaction.
Tracking In-Match Movement Demands Using Local Positioning System in World-Class Men's Ice Hockey
Authors: Douglas Adam S. , Kennedy Cory R.
Published: December 2019

Douglas, AS and Kennedy, CR. Tracking in-match movement demands using local positioning system in world-class men's ice hockey. J Strength Cond Res 34(3): 639–646, 2020—While the global positioning system has been used in field sports for a decade, local positioning systems are newly available in indoor sports for the tracking of velocity and distance during competition. World-class male ice hockey players (n = 20) were monitored during 5 international matches. Speed and distance outputs were analyzed to determine the differences between positions, periods, and in-shift demands. Defense had a difference between forwards at distances covered at very slow (p < 0.001), slow (p < 0.001), and moderate (p < 0.001) speed. Forwards were found to cover a greater distance at very fast speed (p = 0.001) and sprint speed (p < 0.001). Defense had a decrease in skating distance at very fast (p < 0.001) and sprint skating speeds (p = 0.02). Forwards had an increase in very slow skating (p = 0.02) and a decrease in sprint skating distance (p = 0.02). Game situational differences were found for defense and forwards in average speeds for defense (p < 0.001) and forwards (p < 0.001). Local positioning systems data have the potential to accurately inform coaches of the position-specific demands of game situations and the training needs by position. Specifically, forwards performed more high-intensity skating than defensemen, whereas powerplay and penalty kill situations offered specific demands for the 2 positional groups. Finally, the intensity of skating was reduced in the third period for both defensemen and forwards. Further research can evaluate whether this is related to tactical decisions, or the metabolic cost of ice hockey.
Effects of pH of Testing Liquid on the Degradation of Rocks
Authors: Ozdogan Mehmet Volkan
Published: December 2019

Weathering of rocks causes strength loss in rock masses, which induces unexpected failures in rock structures. For a sloped area, weathering of rocks has to be considered for a stable slope design. Slake durability test is the most common method used for determining the weathering of rocks. Although tap water has been used as a slaking fluid in the standard test procedure, rocks are often exposed to groundwater with various pH. This study aims to investigate the effects of pH of testing liquid for slake durability testing and relations between the mineral constituents. To investigate the effect of pH of the test liquid, nine rock samples were subjected to slake durability tests using testing liquid with different pH levels. Additionally, chemical and X-ray diffraction analyses were performed to determine the mineral composition of test samples. The test results show that the mineralogical composition has a great influence on the slake durability of rocks in both acidic and alkali environments.
Sources of carbon to suspended particulate organic matter in the northern Gulf of Mexico
Authors: Rogers Kelsey L. , Bosman Samantha H. , Weber Sarah , Magen Cedric , Montoya Joseph P. , Chanton Jeffrey P.
Published: December 2019

Suspended particulate organic carbon (POCsusp) in the Gulf of Mexico is unique compared to other seas and oceans. In addition to surface primary production, isotopic analysis indicates that microbial cycling of oil and riverine inputs are primary sources of carbon to POCsusp in the Gulf. To characterize POCsusp from seep sites and non-seep north central Gulf (NCG) sites potentially affected by the Deepwater Horizon (DWH) spill, we analyzed 277 and 123 samples for δ13C and Δ14C signatures, respectively. Depth, partitioned into euphotic (<300 m) and deep (>300 m), was the main driver of spatial δ13C differences, with deep depths exhibiting 13C depletion. Both deep depths and proximity to sources of natural seepage resulted in 14C depletion. A two-endmember mixing model based on Δ14C indicated that sources to POCsusp were 14–29% fossil carbon at NCG sites and 19–57% at seep sites, with the balance being modern surface production. A six-component Bayesian mixing model MixSIAR, using both 13C and 14C, suggested that riverine inputs were an important carbon source to POCsusp contributing 34–46%. The influence of seeps was localized. Below the euphotic zone at seep sites, 46 ± 5% (n = 9) of the carbon in POCsusp was derived from environmentally degraded, transformed oil; away from seeps, transformed oil contributed 15 ± 4% (n = 39). We hypothesized that, at NCG sites removed from hydrocarbon seep sources, isotopic signatures would be depleted following the spill and then shift towards background-like enriched values over time. At deep depths we observed decreasing Δ14C signatures in POCsusp from 2010 to 2012, followed by isotopic enrichment from 2012 to 2014 and a subsequent recovery rate of 159‰ per year, consistent with this hypothesis and with biodegraded material from DWH hydrocarbons contributing to POCsusp.
The role of regulatory neuropeptides and neurotrophic factors in asthma pathophysiology
Authors: Kytikova Oxana Yu. , Novgorodtseva Tatyana P. , Antonyuk Marina V. , Gvozdenko Tatyana A.
Published: December 2019

In the last decade, the attention of scientists in the field of biomedicine is focused on studying the relationship between the immunological and neurogenic components of the inflammatory response and their contribution to the pathophysiology of allergic inflammation in asthma. The review is devoted to detailing the mechanism of neurogenic inflammation involving regulatory neuropeptides (substance P, vasoactive intestinal peptide, calcitonin gene-related peptide) in the pathogenesis of bronchial hyperreactivity in asthma. The role of neurotrophic growth factors (nerve growth factor, brain-derived neurotrophic factor) in the regulation of remodeling of bronchi in asthma has been analyzed. The study of neuroimmune mechanisms in the pathophysiology of asthma will it possible to find new therapeutic targets in this research area.
Antioxidant CoQ10 Restores Fertility by Rescuing Bisphenol A-Induced Oxidative DNA Damage in theCaenorhabditis elegansGermline
Authors: Hornos Carneiro Maria Fernanda , Shin Nara , Karthikraj Rajendiran , Barbosa Fernando , Kannan Kurunthachalam , Colaiácovo Monica P
Published: December 2019

Studies have shown an association between female infertility and exposure to endocrine-disrupting chemicals (EDCs), yet strategies for neutralizing such effects are lacking. Bisphenol A (BPA) is a prevalent EDC that affects...

Endocrine-disrupting chemicals are ubiquitously present in our environment, but the mechanisms by which they adversely affect human reproductive health and strategies to circumvent their effects remain largely unknown. Here, we show in Caenorhabditis elegans that supplementation with the antioxidant Coenzyme Q10 (CoQ10) rescues the reprotoxicity induced by the widely used plasticizer and endocrine disruptor bisphenol A (BPA), in part by neutralizing DNA damage resulting from oxidative stress. CoQ10 significantly reduces BPA-induced elevated levels of germ cell apoptosis, phosphorylated checkpoint kinase 1 (CHK-1), double-strand breaks (DSBs), and chromosome defects in diakinesis oocytes. BPA-induced oxidative stress, mitochondrial dysfunction, and increased gene expression of antioxidant enzymes in the germline are counteracted by CoQ10. Finally, CoQ10 treatment also reduced the levels of aneuploid embryos and BPA-induced defects observed in early embryonic divisions. We propose that CoQ10 may counteract BPA-induced reprotoxicity through the scavenging of reactive oxygen species and free radicals, and that this natural antioxidant could constitute a low-risk and low-cost strategy to attenuate the impact on fertility by BPA.
Darío y Machado: dos artes poéticas, dos talantes del modernismo hispanoamericano
Authors: Valcheff Fernando
Published: December 2019

El presente trabajo se propone comparar dos de las poéticas más representativas del movimiento modernista hispanoamericano a partir del análisis de dos poemas centrales en el seno de su producción: «Yo persigo una forma…», de Rubén Darío, y «De mi cartera», de Antonio Machado. Estas artes poéticas, que dan cierre a los respectivos volúmenes que los contienen, funcionan como manifiestos reivindicatorios del ideario de ambos autores en sus etapas de encumbramiento, condensando los principios de dos talantes contrapuestos del modernismo: el preciosismo ensayado por el nicaragüense en Prosas Profanas (1896) y el vitalismo desplegado por el español en Nuevas canciones (1924). La presencia de estas líneas diversas en el seno de una misma corriente da cuenta de su eclecticismo, resaltando su carácter heterogéneo.
Modelling of Moisture Movement in Wood during Outdoor Storage
Authors: Baronas R. , Ivanauskas F. , Juodeikienė I. , Kajalavičius A.
Published: December 2019

A model of moisture movement in wood is presented in this paper in a two-dimensional-in-space formulation. The finite-difference technique has been used in order to obtain the solution of the problem. The model was applied to predict the moisture content in sawn boards from pine during long term storage under outdoor climatic conditions. The satisfactory agreement between the numerical solution and experimental data was obtained.
Quadratic Discriminant Analysis of Spatially Correlated Data
Authors: Dučinskas K. , Šaltytė J.
Published: December 2019

The problem of classification of the realisation of the stationary univariate Gaussian random field into one of two populations with different means and different factorised covariance matrices is considered. In such a case optimal classification rule in the sense of minimum probability of misclassification is associated with non-linear (quadratic) discriminant function. Unknown means and the covariance matrices of the feature vector components are estimated from spatially correlated training samples using the maximum likelihood approach and assuming spatial correlations to be known. Explicit formula of Bayes error rate and the first-order asymptotic expansion of the expected error rate associated with quadratic plug-in discriminant function are presented. A set of numerical calculations for the spherical spatial correlation function is performed and two different spatial sampling designs are compared.
Mathematical Models of Papermaking
Authors: Buikis A. , Cepitis J. , Kalis H. , Reinfelds A. , Ancitis A. , Salminš A.
Published: December 2019

The mathematical model of wood drying based on detailed transport phenomena considering both heat and moisture transfer have been offered in article. The adjustment of this model to the drying process of papermaking is carried out for the range of moisture content corresponding to the period of drying in which vapour movement and bound water diffusion in the web are possible. By averaging as the desired models are obtained sequence of the initial value problems for systems of two nonlinear first order ordinary differential equations.
Stability Analysis of a Stochastic Model for Prey-Predator System with Disease in the Prey
Authors: Mukherjee D.
Published: December 2019

In this paper we consider a prey-predator system where the prey population is infected by a microparasite. Local as well as global stability properties of the interior equilibrium point are discussed. The stochastic stability properties of the model are investigated, suggesting that the deterministic model is robust with respect to stochastic perturbations.
Macrokinetic Model of Catalase Electrode with Biphasic Enzyme Inhibition
Authors: Kriaučiūnas K. , Kulys J.
Published: December 2019

Macrokinetics of catalase based enzyme electrode was investigated in presence of enzyme inhibitor – hydroxylamine. The modeling of the electrode was performed using biphasic scheme of enzyme inhibition and external diffusion limitation. The maximal enzyme electrode sensitivity was indicated at transition from diffusion to kinetically controlled mode. The fitting of experimental data demonstrated that the enzyme electrode had 70% of maximal sensitivity
Space-Time Recovery of Arbitrarily Shaped Wave-Packets by Means of Three Dimensional Imaging Technique
Authors: Matijošius A. , Piskarskas R. , Gaižauskas E. , Dubietis A. , Di Trapani P.
Published: December 2019

We study numerically and experimentally self-focusing dynamics of femtosecond light pulses. By demonstrating the potential of three dimensional imaging technique for quantitative recovery of complex (arbitrarily shaped) wave packets, we monitor space-time transformation dynamics of 150-fs light pulse, which undergoes self-focusing and filamentation in water. Peculiar spatiotemporal and spectral features reveal conical nature of resulting wave-packet.
Once Again About Balts, Gudai, Goths and Their Origins
Authors: Butkus Alvydas , Lanza Stefano M.
Published: December 2019

This paper aims to shed light on the tenacious tendency of would-be philologists and self-taught historians to embellish the history of the Lithuanian nation and its civilization by providing interpretations of ancient texts without real evidence. In particular, the authors review some methodological aspects of historical research in the work of the Lithuanian émigré J. Statkutė de Rosales, Europos šaknys ir mes, lietuviai (The Roots of Europe and We, the Lithuanians). This article points out that her claim that the Goths were the mighty ancestors of today’s Lithuanians derives from a macroscopic misinterpretation and alteration of the only existing text about the origin of the Goths, which is the late Latin Getica, written by Jordanes. Statkutė, who recently received a doctorate honoris causa, identifies the Goths with the ancient Lithuanians by comparing the word Gothi with the Lithuanian ethnonym gudai, and asserts that world historians have intentionally been duped for years by a few deceitful scholars into believing that the Goths originated in Scandinavia. Statkutė holds that the island of Scandza depicted by Jordanes should not be identified with Scandinavia at all, but with the Baltic coast from Eastern Poland to Lithuania.The authors of this paper examine the actual text of Jordanes both philologically and with cross-references to other authors, finding that Statkutė’s conclusions are extremely erroneous. Not only has the Latin text been incorrectly translated by Statkutė in more than one passage, but she has also kept silent – most probably on purpose – about some crucial information, thereby lending support to her theories. The identification of Scandza, the fatherland of the Goths according to Jordanes, with the Baltic coast has to be ruled out mainly by the fact that the Latin historian clearly describes the phenomena of the polar night and midnight sun as being typical of Northern Scandza. Statkutė’s approach to sources written in Latin also appears compromised, not only by leaving out relevant information, but also by her difficulty in understanding (and therefore translating) the texts as well. The authors of this paper point out several other misinterpretations of facts, which are presented in her book as more or less revolutionary findings. In addition, Statkutė’s arrogant accusations against distinguished scholars would be inappropriate even if she were correct in her assumptions. As a matter of fact, her sole merit today is the attempt to arouse Lithuanians’ interest in their own distant past.
The Portrayal of Women in the Periodicals of the First Lithuanian Republic
Authors: Bankauskaitė-Sereikienė Gabija
Published: December 2019

This article aims to add to the study of the culture, advertising history, and conception of woman of the first Republic of Lithuania. It examines articles and advertisements for women published from 1920–1940 in the periodicals “Naujoji romuva”, “Moteris” and “Naujas žodis.”The image of woman demanded by the traditional society was in large part formed by the Lithuanian Catholic women’s society through the newspaper “Moteris.” The patriarchal society wanted women to appear modest, healthy, and naturally beautiful, cherishing folk traditions and the image of the village girl with blonde braids. The image of woman-as-sacrificial-hero was also popular. Connotations of femininity were applied to the good, moral mother, the unconditionally loving wife, the guardian of the home, the saviour of the nation, the tutor and teacher who follows the word of God. However, the desire to also see women as active, determined, educated people who were able to hold jobs and take care of themselves demonstrates the broad outlook of the female Catholics.The image of the free-willed Lithuanian woman, as dictated by Western culture, appeared in “Naujoji romuva” and “Naujas žodis.” At its core it emphasised the cult of the body, fashion, external beauty, and personal and sexual freedom. The modern woman was always young, active, dominant in her relationships with men, and took an active interest in cultural events. Emancipated women were not necessarily married, and could raise children without husbands just as well. Yet femininity and faithfulness were valued.The study of the sources shows that women’s individuality, self-identity and need to be active were most likely to be expressed in the social, cultural and artistic spheres. These provided women not only with the opportunity to be educated and emancipated, but also with a place for self-expression, a chance to open their inner world, to form a well-rounded world-view. It is likely that the interwar Lithuanian woman – a middle-class city dweller – was in search of harmony and freedom: to be a bit of a temptress, to be beautiful, to create a happy family, and to make these differing social feminine roles work with her own economic and spiritual emancipation.
Modeling morphological learning, typology, and change: What can the neural sequence-to-sequence framework contribute?
Authors: Elsner Micha , Sims Andrea D. , Erdmann Alexander , Hernandez Antonio , Jaffe Evan , Jin Lifeng , Johnson Martha Booker , Karim Shuan , King David L. , Lamberti Nunes Luana , Oh Byung-Doh , Rasmussen Nathan , Shain Cory , Antetomaso Stephanie , Dickinson Kendra V. , Diewald Noah , McKenzie Michelle , Stevens-Guille Symon
Published: December 2019

We survey research using neural sequence-to-sequence models as compu-tational models of morphological learning and learnability. We discusstheir use in determining the predictability of inflectional exponents, inmaking predictions about language acquisition and in modeling languagechange. Finally, we make some proposals for future work in these areas.
Historia de la microbiología en América Latina desde la perspectiva de los Estudios Sociales de la Ciencia y la Tecnología
Authors: Zabala Juan Pablo , Rojas Nicolás Facundo
Published: December 2019

Este artículo surgió en el marco del trabajo conjunto de la Red de Historia Global de la Microbiología en América Latina, compuesta por profesionales de la microbiología, historia y sociólogos de la ciencia interesados en construir una reflexión histórica sobre la microbiología, que en nuestra tarea nos enfrentamos al desafío conceptual que supone delimitar ese objeto en términos empíricos y teóricos. Como resultado de esta preocupación, proponemos una reflexión sobre algunos de los ejes conceptuales y metodológicos que, desde los Estudios Sociales de la Ciencia y la Tecnología (ESCT), nos permiten construir una perspectiva histórica del desarrollo de la microbiología en el contexto latinoamericano. Estos han puesto el énfasis en distintas cuestiones, tales como los aspectos organizativos, las interacciones entre los actores o en las redes sociales que se conformaron en torno a la práctica microbiológica. En segundo lugar, se reconstruye la gran diversidad de prácticas, saberes, instituciones, intereses (económicos, sociales, profesionales) y procesos políticos –tanto locales como internacionales– que desde el siglo XIX han atravesado la recepción de la microbiología en América Latina. A continuación, se presentan dos perspectivas posibles de construcción de la microbiología como objeto de investigación: a partir del estudio de instituciones, por un lado, y del análisis de la emergencia de enfermedades y de los procesos de intervención política asociados a ellas, por el otro.
Gottfried Benn y la sublime belleza de la crueldad
Authors: Párraga Javier Martín
Published: December 2019

Morgue und andere Gedichte, opus primum del poeta germano Gottfried Benn, publicado en el año 1912, supuso una revolución en la poesía alemana del momento debido a su naturaleza radical y provocadora. En este artículo se lleva a cabo un estudio pormenorizado del poemario completo, partiendo del marco teórico constituido tanto por pensadores como Addison, Burke o Dessoir que definieron el concepto de sublime como por otros poetas que, como Benn, se adhieren a una concepción sublime del hecho poético que, en muchas ocasiones lleva a despreciar la belleza formal canónica en pos de una cierta escatología que es a la par socialmente provocadora y fecundamente filosófica.
Azerbaijan Democratic Party: Ups and Downs (1945-1946)
Authors: Soleimani Amiri Mohammad
Published: December 2019

Democratic Party of Azerbaijan's movement is one of the most important events in the history of Iran and the world. It was for the first time in the history of Iran that a political party seriously stressed the issue of autonomy. In addition, this movement as liberation movement prioritized several decisive and fundamental reform. Most important of all, Iran's complaints of the Soviet Union in the Security Council and the confrontation of   superpowers led to the Cold War. This study attempts to analyze this issue using several Persian, English, Russian and Turkish resources. The present paper concludes that the emergence of the Democratic Party movement was the result of internal and external in addition, objective and subjective factors.
Emparejamiento entre competencias y empleo en el mercado laboral costarricense
Authors: Blanco Laura Cristina
Published: December 2019

Se utilizó la Encuesta Nacional de Hogares 2011-2017 para estimar los tipos de emparejamiento laborales a partir de la definición de Chevalier (2003).  Se estudian los covariantes al tipo de emparejamiento utilizando un análisis logit multinomial y se analizan las ecuaciones salariales en función del tipo de emparejamiento y el nivel de competencias. Para la población ocupada mayor de edad se encuentra una tasa de subcalificación de 28.9%, mientras que las tasas de aparente y genuina sobrecalificación son de 13.3% y 0.8%, respectivamente.  Los resultados muestran que la subcalificación se encuentra asociada a un premio salarial de aproximadamente 30%, mientras que la aparente sobrecalificación y la sobrecalificación real presentan un castigo promedio equivalente al 35% y 47.5% del salario, respectivamente.  Para la población con estudios superiores, el castigo a la aparente y genuina sobrecalificación se estiman en 38.9% y 49.3%, respectivamente.