bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship between impulsiveness and tactical performance of U-15 youth soccer players
Authors: Cabral de Andrade Marcelo Odilon , Figueiredo Machado Guilherme , Teoldo Israel 
Published: September 2016

PurposeThe aim of this study was to examine the relationship between impulsiveness and tactical performance of U-15 youth
soccer players.MethodsThe sample comprised 100 U-15 youth soccer players. Impulsiveness and tactical performance were
assessed using the Continuous Performance Test-II (CPT-II) and the System of Tactical Assessment in Soccer (FUT-SAT), respectively.
FUT-SAT enables evaluation of ten core tactical principles of soccer game: (i) penetration; (ii) offensive coverage; (iii)
depth mobility; (iv) width and length; (v) offensive unity; (vi) delay; (vii) defensive coverage; (viii) balance; (ix) concentration;
and (x) defensive unity. Impulsiveness values were obtained using the Omission and Commission Error analysis. Tactical performance
values were obtained through the Game Tactical Performance Index (GTPI), Offensive Tactical Performance Index (OTPI)
and Defensive Tactical Performance Index (DTPI). The Kolmogorov–Smirnov test and Spearman’s Correlation one were performed
(<i>p</i> < 0.05) through SPSS, v. 22ResultsWe observed a positive correlation between impulsiveness and GTPI (rho = 0.226; <i>p</i> = 0.018).ConclusionsIt is concluded that impulsiveness is related to tactical performance of U-15 youth soccer players.
Evaluation of laterality in the snowboard basic position
Authors: Staniszewski Michał , Zybko Przemysław , Wiszomirska Ida 
Published: September 2016

PurposeSnowboarding requires a lateral positioning of the body. Moreover, a person must continuously control their balance
and use this in order to manoeuvre on the slope applying properly pressure on the lower limb closest to the nose of the board
(the leading leg). The present study is an attempt to determine the interdependencies between side preference while snowboarding
and laterality when performing other tasks. The dynamic stability in the neutral standing position, as well as in the lateral positions
(left or right) was also evaluatedMethodsThe survey participants (100 active snowboarders) answered a set of questions
concerning laterality while carrying out basic everyday tasks and while doing sports. The respondents were divided into two
groups based on their preferred leading side in snowboarding. Additionally, in the case of 34 people, muscle torques values of
the lower limbs were measured under static conditions and the postural stability was evaluated using AccuSway AMTI platform
and Biodex Balance System platform.ResultsOver 90% of the participants declared right-handedness and right-footedness.
However, with regard to snowboarding, only 66% indicated their right leg as leading. No significant dependence was found
between the directional stance on the board and the leading hand, dominant leg, or leading eye. The stability measurements
revealed statistically significant differences between the neutral stance and the lateral positioningConclusionsBased on the
study results, it may be assumed that the declared directional stance on the snowboard is not contingent on the person’s basic
laterality, and that the lateral stance on the board significantly affects the posture control.
High temperature EPR study of the M3Fe4V6O24 (M = Cu, Zn, Mg and Mn)
Authors: Guskos Niko , Zolnierkiewicz Grzegorz , Typek Janusz , Pilarska Malwina , Aidinis Constantinos , Blonska-Tabero Anna 
Published: September 2016

AbstractElectron paramagnetic resonance (EPR) spectra of M3Fe4V6O24 (M = Cu, Zn, Mg and Mn) compounds in high temperature range (293 K to 493 K) have been investigated. The role of magnetic (Cu, Mn) and non-magnetic (Zn, Mg) ions in M3Fe4V6O24 structure in formation of magnetic resonance spectra was studied. Temperature dependence of EPR parameters: resonance field, linewidth and integrated intensity were examined. Similarities and differences in temperature behavior of these parameters has been discussed in terms of different relaxation mechanisms and magnetic interactions in the spin systems. An important role of additional magnetic ions (M = Mn or Cu) in the M3Fe4V6O24 structure has been identified and its consequences considered.
Investigation on nonlinear optical and dielectric properties of L-arginine doped ZTC crystal to explore photonic device applications
Authors: Anis Mohd , Hussaini S.S. , Shirsat M.D. , Muley G.G. 
Published: September 2016

AbstractThe present study is focused to explore the photonic device applications of L-arginine doped ZTC (LA-ZTC) crystals using nonlinear optical (NLO) and dielectric studies. The LA-ZTC crystals have been grown by slow evaporation solution technique. The chemical composition and surface of LA-ZTC crystal have been analyzed by means of energy dispersive spectroscopy (EDS) and surface scanning electron microscopy (SEM) techniques. The Vicker’s microhardness study has been carried out to determine the hardness, work hardening index, yield strength and elastic stiffness of LA-ZTC crystal. The enhanced SHG efficiency of LA-ZTC crystal has been ascertained using the Kurtz-Perry powder SHG test. The closed-and-open aperture Z-scan technique has been employed to confirm the third order nonlinear optical nature of LA-ZTC crystal. The Z-scan transmittance data has been utilized to calculate the superior cubic susceptibility, nonlinear refractive index, nonlinear absorption coefficient and figure of merit of LA-ZTC crystal. The behavior of dielectric constant and dielectric loss of LA-ZTC crystal at different temperatures has been investigated using the dielectric analysis.
Titanium nitride coatings synthesized by IPD method with eliminated current oscillations
Authors: Chodun Rafał , Nowakowska-Langier Katarzyna , Zdunek Krzysztof 
Published: September 2016

AbstractThis paper presents the effects of elimination of current oscillations within the coaxial plasma accelerator during IPD deposition process on the morphology, phase structure and properties of synthesized TiN coatings. Current observations of waveforms have been made by use of an oscilloscope. As a test material for experiments, titanium nitride TiN coatings synthesized on silicon and high-speed steel substrates were used. The coatings morphology, phase composition and wear resistance properties were determined. The character of current waveforms in the plasma accelerator electric circuit plays a crucial role during the coatings synthesis process. Elimination of the current oscillations leads to obtaining an ultrafine grained structure of titanium nitride coatings and to disappearance of the tendency to structure columnarization. The coatings obtained during processes of a non-oscillating character are distinguished by better wear-resistance properties.
Synthesis of PVDF/SBT composite thin films by spin coating technology and their ferroelectric properties
Authors: Chen Changchun , Hu Pengfei , Yang Jun , Liu Zixuan 
Published: September 2016

AbstractFerroelectric composite thin films of x-SBT/PVDF with different SBT content (weight ratios of SBT to PVDF, x = 0 %, 5 %, 10 %, 15 %, 20 %) were prepared by spin-coating method. The crystal structures of x-SBT/PVDF films were analyzed by X-ray diffraction (XRD) measurements and Fourier transform-infrared spectroscopy (FT-IR), respectively. Experimental results demonstrated that both α, β-phases PVDF and the layered perovskite SBT co-existed in the x-SBT/PVDF samples. With an increase of SBT content in the x-SBT/PVDF thin films, both the dielectric constant and the saturated polarization were also increased, compared with those of pure PVDF thin film. More importantly, when the SBT content in the x-SBT/PVDF thin films was larger than 15 %, the coercive field of x-SBT/PVDF thin films was also decreased.
Effect Y substitution on the microstructure, transport and magnetic proprieties of Bi2Sr2Ca1Cu2O8+δ superconducting ceramics
Authors: Menassel S. , Mosbah M.-F. , Boudjadja Y. , Altintas S.P. , Varilci A. , Terzioglu C. 
Published: September 2016

AbstractIn high Tc superconductors (HTSC) the activation energy gives information about the pinning properties of a sample under applied magnetic field. Pinning of vortices determines the critical current density Jc which is of great importance for practical applications of HTSC. Instead of magnetic measurements, the activation energy may be calculated from resistivity measurements realized under magnetic field. This kind of measurement has been made in this work for yttrium doped samples of Bi2Sr2CaCu2O8+d (Bi-2212) for different values of applied magnetic field. Samples of Bi2Sr2Ca1-xYxCu2O8+d (x = 0, 0.025, 0.1, 0.25) were prepared by a sol-gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive analysis of X-ray. The measurements of resistivity were made using a classical four probe method and DC current. The magnetic field was applied with a constant amplitude of 0 T, 1 T, 2 T and 3 T. The obtained results show that the activation energy decreases with introduction of yttrium, but has a relative maximum when x is equal 0.1. The decrease of the activation energy is explained by the granular nature of the samples which promotes 3D transition to 2D of the vortex lattice.
Structural, dielectric and AC conductivity studies on 0.8Ba0.2(Bi0.5K0.5)Ti1-xZrxO3 lead free ceramic system
Authors: Ramesh M.N.V. , Ramesh K.V. 
Published: September 2016

AbstractZr substituted 0.8BaTiO30.2 Bi0.5K0.5TiO3 lead free ceramic materials with a composition 0.8Ba0.2(Bi0.5K0.5)Ti1-xZrxO3 (0.01 ≤ x ≤ 0.06) were prepared by conventional solid state reaction method followed by high energy ball milling. The X-ray diffraction studies confirmed the tetragonal structure of the material at room temperature. Density was decreasing with the substitution of Zr. Microstructure studies were done by using scanning electron microscope. Temperature and frequency dependent dielectric studies were carried out and showed that the dielectric constant, dielectric loss and Curie temperature were decreasing with the substitution of Zr. Relaxor behavior was observed in all the Zr substituted samples. Degree of diffuseness was calculated from the modified Curie-Weiss law and it was found to increase with the substitution of Zr. Frequency and temperature dependent AC conductivity was calculated and it was found to obey Jonscher’s power law. Substitution of Zr decreased the conductivity of the material. Activation energy was calculated and it was decreasing with an increase in Zr substitution.
Radon problems in mining and post-mining areas in Upper Silesia region, Poland
Authors: Wysocka Małgorzata 
Published: September 2016

Abstract
The new basic safety standards (BSS) Directive 2013/59/Euratom [1] puts EU member states under an obligation to establish, amongst others, national radon action plans. In order to address the issue of long-term risks from radon exposures, it is important to identify areas where elevated levels of radon can be expected. One of the types of areas affected by an increased migration of radon and by the penetration of radon into buildings are areas in which industrial activity, for example, the exploitation of mineral resources, causes changes in the geological environment. The Upper Silesian Coal Basin (USCB) in Poland is one of the examples. The results of studies conducted in the past have shown that the levels of indoor concentration of radon, to a large extent, depend on the geological structure of the subsurface layers. One of the main factors influencing the migratory abilities of radon are the mining-induced changes of a rock body. We estimate that in specific radon-prone zones, the levels of radon may exceed 300 Bq/m3 in approximately 2% of the dwellings. Another problem that may appear in post-mining areas is linked to the reclamation of radioactively contaminated areas. The complex geology of the strata in USCB, the mining activity that can be observed in the region and, additionally, the discharge of radium-bearing waters into the environment are the most significant factors affecting radon potential and hazard in dwellings in this region. In this paper, problems linked to the detection of radon in the mining area of USCB are presented.
The Second Record of the Species Anthaxia (Melanthaxia) morio (Fabricius, 1792) (Coleoptera: Buprestidae) in Romania
Authors: Pintilioaie Alexandru–Mihai 
Published: September 2016

Abstract
This paper reports on the second record of Anthaxia (Melanthaxia) morio (Fabricius, 1792) in Romania. Previously, this species was known from a single specimen collected in 1997. Some details regarding the habitat and the main diagnostic characters of the species are presented.
Invertebrate Collection Donated by Professor Dr. Ion Cantacuzino to “Grigore Antipa” National Museum of Natural History from Bucharest
Authors: Petrescu Iorgu , Petrescu Ana–Maria 
Published: September 2016

AbstractThe catalogue of the invertebrate collection donated by Prof. Dr. Ion Cantacuzino represents the first detailed description of this historical act. The early years of Prof. Dr. Ion Cantacuzino’s career are dedicated to natural sciences, collecting and drawing of marine invertebrates followed by experimental studies. The present paper represents gathered data from Grigore Antipa 1931 inventory, also from the original handwritten labels. The specimens were classified by current nomenclature. The present donation comprises 70 species of Protozoa, Porifera, Coelenterata, Mollusca, Annelida, Bryozoa, Sipuncula, Arthropoda, Chaetognatha, Echinodermata, Tunicata and Chordata.. The specimens were collected from the North West of the Mediterranean Sea (Villefranche–sur–Mer) and in 1899 were donated to the Museum of Natural History from Bucharest. The original catalogue of the donation was lost and along other 27 specimens. This contribution represents an homage to Professor’s Dr. Cantacuzino generosity and withal restoring this donation to its proper position on cultural heritage hallway.
Interband Heating Processes in a Periodically Driven Optical Lattice
Authors: Sträter Christoph , Eckardt André 
Published: September 2016

Abstract
We investigate multi-“photon” interband excitation processes in an optical lattice that is driven periodically in time by a modulation of the lattice depth. Assuming the system to be prepared in the lowest band, we compute the excitation spectrum numerically. Moreover, we estimate the effective coupling parameters for resonant interband excitation processes analytically, employing degenerate perturbation theory in Floquet space. We find that below a threshold driving strength, interband excitations are suppressed exponentially with respect to the inverse driving frequency. For sufficiently low frequencies, this leads to a rather sudden onset of interband heating, once the driving strength reaches the threshold. We argue that this behavior is rather generic and should also be found in lattice systems that are driven by other forms of periodic forcing. Our results are relevant for Floquet engineering, where a lattice system is driven periodically in time in order to endow it with novel properties like the emergence of a strong artificial magnetic field or a topological band structure. In this context, interband excitation processes correspond to detrimental heating.
A Transverse Dynamic Deflection Model for Thin Plate Made of Saturated Porous Materials
Authors: Feng-xi Zhou , Xiao-lin Cao 
Published: September 2016

AbstractIn this article, a transverse dynamic deflection model is established for thin plate made of saturated porous materials. Based on the Biot’s model for fluid-saturated porous media, using the Love–Kirchhoff hypothesis, the governing equations of transverse vibrations of fluid-saturated poroelastic plates are derived in detail, which take the inertial, fluid viscous, mechanical couplings, compressibility of solid, and fluid into account. The free vibration and forced vibration response of a simply supported poroelastic rectangular plate is obtained by Fourier series expansion method. Through numerical examples, the effect of porosity and permeability on the dynamic response, including the natural frequency, amplitude response, and the resonance areas is assessed.
Isolation, antimicrobial and antitumor activities of a new polyhydroxysteroid and a new diterpenoid from the soft coral Xenia umbellata
Authors: Ayyad Seif-Eldin N. , Alarif Walied M. , Al-Footy Khalid O. , Selim Elham A. , Ghandourah Mohamed A. , Aly Magda M. , Alorfi Hajer S. 
Published: September 2016

Abstract
A new C-30 steroid, 3β-,5α-,6β-,11α-,20β-pentahydroxygorgosterol (1), and a new diterpenoid, xeniumbellal (2), along with three known aromadendrane-type sesquiterpenes, aromadendrene (3), palustrol (4) and viridiflorol (5), were isolated from the soft coral Xenia umbellata. Chemical structures were determined by analyzing their NMR and MS data. The antimicrobial and antitumor activities of the isolated compounds were examined. Both 1 and 2 showed moderate antibacterial activities, especially against the multidrug-resistant Acinetobacter baumannii (MIC 0.22 and 0.28 mM, respectively); while 2 showed antitumor activity against a lymphoma cell line with LD50 0.57 mM and was nontoxic to Artemia salina at all tested concentrations up to about 4 mM.
Resolvin D1 Programs Inflammation Resolution by Increasing TGF-β Expression Induced by Dying Cell Clearance in Experimental Autoimmune Neuritis
Authors: Luo Bangwei , Han Fuyu , Xu Kai , Wang Jinsong , Liu Zongwei , Shen Zigang , Li Jia , Liu Yu , Jiang Man , Zhang Zhi-Yuan , Zhang Zhiren 
Published: September 2016

Experimental autoimmune neuritis (EAN) is the animal model of human acute inflammatory demyelinating polyradiculoneuropathies (AIDP), an auto-immune inflammatory demyelination disease of the peripheral nervous system (PNS) and the world's leading cause of acute autoimmune neuromuscular paralysis. EAN and AIDP are characterized by self-limitation with spontaneous recovery; however, endogenous pathways that regulate inflammation resolution in EAN and AIDP remain elusive. A pathway of endogenous mediators, especially resolvins and clearance of apoptotic cells, may be involved. Here, we determined that resolvin D1 (RvD1), its synthetic enzyme, and its receptor were greatly increased in PNS during the recovery stage of EAN. Both endogenous and exogenous RvD1 increased regulatory T (Treg) cell and anti-inflammatory macrophage counts in PNS, enhanced inflammation resolution, and promoted disease recovery in EAN rats. Moreover, RvD1 upregulated the transforming growth factor-β (TGF-β) level and pharmacologic inhibition of TGF-β signaling suppressed RvD1-induced Treg cell counts, but not anti-inflammatory macrophage counts, and RvD1-improved inflammation resolution and disease recovery in EAN rats. Mechanistically, the RvD1-enhanced macrophage phagocytosis of apoptotic T cells leading to reduced apoptotic T-cell accumulation in PNS induced TGF-β production and caused Treg cells to promote inflammation resolution and disease recovery in EAN. Therefore, these data highlight the crucial role of RvD1 as an important pro-resolving molecule in EAN and suggest its potential as a therapeutic target in human neuropathies.SIGNIFICANCE STATEMENTExperimental autoimmune neuritis (EAN) is the animal model of human acute inflammatory demyelinating polyradiculoneuropathies, an auto-immune inflammatory demyelination disease of the peripheral nervous system (PNS) and the world's leading cause of acute autoimmune neuromuscular paralysis. Here, we demonstrated that resolvin D1 (RvD1) promoted macrophage phagocytosis of apoptotic T cells in PNS, thereby upregulating transforming growth factor-β by macrophages, increased local Treg cell counts, and finally promoted inflammation resolution and disease recovery in EAN. These data highlight the crucial role of RvD1 as an important pro-resolving molecule in EAN and suggest that it has potential as a therapeutic target in human neuritis.
The Arp2/3 Complex Is Essential for Distinct Stages of Spine Synapse Maturation, Including Synapse Unsilencing
Authors: Spence Erin F. , Kanak Daniel J. , Carlson Benjamin R. , Soderling Scott H. 
Published: September 2016

Dendritic filopodia are actin-rich structures that are thought to contribute to early spine synapse formation; however, the actin regulatory proteins important for early synaptogenesis are poorly defined. Using organotypic hippocampal slice cultures and primary neuron hippocampal cultures fromArp2/3conditional knock-out mice, we analyze the roles of the Arp2/3 complex, an actin regulator that creates branched actin networks, and demonstrate it is essential for distinct stages of both structural and functional maturation of excitatory spine synapses. Our data show that initially the Arp2/3 complex inhibits the formation of dendritic filopodia but that later during development, the Arp2/3 complex drives the morphological maturation from filopodia to typical spine morphology. Furthermore, we demonstrate that although the Arp2/3 complex is not required for key spine maturation steps, such as presynaptic contact and recruitment of MAGUK (membrane-associated guanylate kinase) scaffolding proteins or NMDA receptors, it is necessary for the recruitment of AMPA receptors. This latter process, also known as synapse unsilencing, is a final and essential step in the neurodevelopment of excitatory postsynaptic synaptogenesis, setting the stage for neuronal interconnectivity. These findings provide the first evidence that the Arp2/3 complex is directly involved in functional maturation of dendritic spines during the developmental period of spinogenesis.SIGNIFICANCE STATEMENTExcitatory spine synapse formation (spinogenesis) is a poorly understood yet pivotal period of neurodevelopment that occurs within 2–3 weeks after birth. Neurodevelopmental disorders such as intellectual disability and autism are characterized by abnormal spine structure, which may arise from abnormal excitatory synaptogenesis. The initial stage of spinogenesis is thought to begin with the emergence of actin-rich dendritic filopodia that initiate contact with presynaptic axonal boutons. However, it remains enigmatic how actin cytoskeletal regulation directs dendritic filopodial emergence or their subsequent maturation into dendritic spines during development and on into adulthood. In this study, we provide the first evidence that the Arp2/3 complex, a key actin nucleator, is involved in distinct stages of spine formation and is required for synapse unsilencing.