bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Moisture Content on the Diverse Structure State of the Octanoyl Alanine Metal (Mg, Ca) Complexes
Authors: Gerile Naren , Bao Li Hong , Zhang Jin Kang , Zhang Ying , Tian Xiao , Bao Ta Na , Tegus Ojiyed
Published: March 2019

Octanoyl alanine ligands and metal ions (Mg2+, Ca2+) form metal complexes of octanoyl alanine through chemical coordination bonds [1]. According to the acid base reaction and the Lewis acid-base theory[2], the molecule or ion of the central atom or ion (collectively called the central atom) and the ligand (called ligand) around it, completely or partially by the coordination bond to form metal complex. These octanoyl alanine complexes are soluble in water and easily ionize into internal coordination ions and external ions, while the ligands and central atoms do not ionize in the inner boundary. The octanoyl alanine magnesium and calcium complexes belongs to the amino acid metal complexes, which can be widely used in daily life, industrial production and life science in the future application. Recently, with the rapid development of amino acid metal complexes [3-7], it is not only associated with inorganic compounds and organometallic compounds, but also overlaps with the chemistry, coordination catalysis and molecular biology of the current chemical frontiers [8-10]. In this paper, [C10H20NCO3]2M type metal complexes prepared by combining octanoyl alanine ligand with metal ions containing functional group COOH, the influence of water content on the DSC curve and surface morphology of metal complexes was studied, and the information of the diversified structure state of the materials complex can be obtained.
Magnetism and Mechanical Properties of Mn1.28Fe0.67P0.48Si0.52 / Cu Composites
Authors: Hamt Ojiyed , Oimod Hascholu , Tegus Ojiyed
Published: March 2019

This paper reports the effect of Cu doping in first order phase transition material Mn1.28Fe0.67P0.48Si0.52 on its phase structure, magnetocaloric effect and mechanical properties. The results of XRD, SEM and EDS analysis show that the Mn1.28Fe0.67P0.48Si0.52 in this composite forms Fe2P hexagonal structure and the space group is P-62m;Most of Cu exists as a simple substance, and a small amount of Cu and Mn form a solid solution. When the mass ratio of Cu reaches 10:4, the (Mn,Fe)3Si phase appears in Mn1.28Fe0.67P0.48Si0.52. The magnetic measurement results show that the saturation magnetization of Mn1.28Fe0.67P0.48Si0.52 after Cu doping has no obvious change, the Curie temperature decreases, and the thermal hysteresis increases. The maximum magnetic entropy change becomes smaller as the Cu content increases. Under a 1.5 T external magnetic field, the maximum magnetic entropy ΔSm of the composite decreases rapidly from 11 J/kg·K at x = 0 to 4 J/kg·K at x = 5,the half width of the magnetic entropy change gradually increases. The Vickers hardness of the composite is reduced, the compressive strength has been greatly improved, and the mechanical properties have been significantly enhanced after Cu doping.
Optimization of PEDOT:PSS Hole Transport Layer Toward the Organic Solar Cells with High Fill Factor
Authors: Lian Hong , Ning Jun , Bolag Altan , Hexig Alata , Gerile Naren , Tegus Ojiyed , Lin Song
Published: March 2019

We have investigated the effect of diluting treatment of poly (3,4-ethylenedioxythiophen e):poly (styrene sulfonate)(PEDOT:PSS) solution on the PEDOT:PSS films and the organic polymer solar cells based on poly [4,8-bis (5-(2-ethylhexyl) thiophen-2-yl) benzo [1,2-b;4,5-b0] dithiophene-co-3-fluorothieno [3,4-b] thiophene-2-carboxylate](PTB7-Th):[6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) using PEDOT:PSS polymer as the hole transport layer. The diluted PEDOT:PSS solution by water with 1:1.5 volume ratio was used to fabricate the hole transport layer in the organic solar cell, the fill factor and the shunt resistance of the solar cell can be significantly enhanced compared with the control cell, up to 64% and 949.03Ω·cm2, respectively.
An Application of Multigrain Approaches to the Structural Solution of Grains from Polycrystalline Samples
Authors: Davaasambuu Jav , Wright Jon , Soerensen Henning O. , Schmidt Soeren , Poulsen Henning F. , Techert Simone
Published: March 2019

The overlap of diffraction spots from different grains was investigated to understand the influence of experimental factors on the x-ray diffraction data quality and to optimize the experimental parameters for data collection on polycrystalline samples. Diffraction patterns for photoactive polycrystals were indexed and sorted with respect to grains using multigrain approaches. The indexing of diffraction spots and the identification of grains for tetrathiafulvalene-p-chloranil samples were performed using the ImageD11, GrainSpotter, GRAINDEX and Cell_now programs. In many cases, comparison of the results from these programs shows good agreement. For the individual grains from polycrystalline samples, the crystal structure was solved and refined using the SHELXTL program. After the structural refinement of the grains, the best and the average R1 values were 1.93% and 2.06%, respectively, which are on a comparable resolution level with that obtained from the x-ray single crystal measurements.
Influence of Pressure on Polaron Energy in a Wurtzite GaN/AlxGa1-xN Quantum Well
Authors: Zhao Feng Qi , Dai Xiao Mei
Published: March 2019

The influence of hydrostatic pressure on the polaron energy level in wurtzite GaN/AlxGa1-xN quantum well is studied by a Lee-Low-Pines variational method, and the numerical results of the ground state energy, transition energy and contributions of different phonons to polaron energy (polaron effects) are given as functions of pressure p and composition x. The results show that the ground state energy and transition energy in the wurtzite GaN/AlxGa1-xN quantum well decrease with the increase of the hydrostatic pressure p, and increase with the increase of the composition x. The contributions of different phonons to polaron energy with pressure p and composition x are obviously different. With the increase of hydrostatic pressure, the contribution of half-space phonon, confined phonon and the total contribution of phonons of all branches increases obviously, while the contribution of interface phonon slowly increases. During the increase of the composition, the contribution of interface phonon decreases and the contribution of half-space phonon increases slowly, while the contribution of confined phonon and the total contribution of phonons increases significantly. In general, the electron-optical phonon interaction play an important role in electronic states of GaN/AlxGa1-xN quantum wells and can not be neglected.
Effects of a Large Content of Yttrium Doping on Microstructure and Magnetostriction of Fe83Ga17 Alloy
Authors: Zhao Li Juan , Tian Xiao , Yao Zhan Quan , Zhao Xuan , Tegus Ojiyed
Published: March 2019

As-cast (Fe0.83Ga0.17)100-xYx (x=0, 3, 6 and 9) alloys were prepared by non-consumable vacuum arc melting furnace under a protective argon atmosphere. The crystal structures and surface morphologies of the alloys were studied by X-ray diffraction (XRD), optical microscope (OM) and scanning electron microscopy (SEM), combined with energy dispersive spectroscopy (EDS), respectively. The surface domain structures were observed by atomic force microscopy (AFM). The magnetostriction coefficients of the alloys were measured by strain gauging method. The results showed that the as-cast Fe83Ga17 alloy was composed only of a single phase of A2 with bcc structure, whereas the ternary Fe-Ga-Y alloys contain multiphase structure, besides the A2 phase, (FeGa)17Y1.76 new phases are observed as well, and an elemental yttrium phase appeared when the yttrium content increased to x=6 and x=9. Doping with yttrium have an effect on the change of magnetic domain structure of the binary alloy. With increasing x, the magnetostriction coefficient of the (Fe0.83Ga0.17)100-xYx alloys decreased sharply. The minimum magnetostriction coefficient is reduced to 12 ppm at the magnetic field of 426kA/m when x=9.
Preparation, Characterization, and FET Properties of 3,3',5,5'-Tetra-Phenyldiphenoquinone
Authors: Zhang Xiao Ying , Bolag Altan , Wu Yun , Yamashita Yoshiro
Published: March 2019

In this work, tetraphenyldiphenoquinone (DPQ) was synthesized and characterized by single crystal structure analysis, ultraviolet–visible spectroscopy (UV–Vis) and cyclic voltammetry (CV). DPQ–based organic field-effect transistors (OFET) were fabricated with bottom contact configuration using bare SiO2/Si substrate and hexamethyldisilazane (HMDS) treated substrate, respectively. The HMDS-treated device showed hole mobility of 8.7 × 10−7 cm2 V−1 s−1, current on/off ratio of 1.2 × 102 and threshold voltage of −39 V. Devices with bare substrate showed no FET behaviors. Finally, film morphology was investigated by X-ray diffraction (XRD) analyses and the results showed that the HMDS treatment exhibits better crystallinity of DPQ on the film thus obtaining FET performance.
Effect of Mechanical Activation of Fluidized Bed Fly Ash on Geopolymer Properties
Authors: Oyun-Erdene Gendenjamts , Temuujin Jadambaa
Published: March 2019

This paper is focused on the elucidation of mechanical activation effect of circulating fluidized bed combustion fly ash (Amgalan Thermal Station, Mongolia) on mechanical properties of geopolymers. Fluidized bed fly ash was mechanically activated for 15-120 minutes with a vibratory mill. The effect of mechanical activation was quite visible on the particle size reduction and on the degree of amorphization.Geopolymer samples were prepared from the raw and milled fluidized bed fly ashes by alkaline activation. Chemical activation was performed with 10M sodium hydroxide solution, as well as solutions containing a mixture of sodium silicate and sodium hydroxide with a weight ratio of 2:1. The geopolymer cubic specimens were cured at 70°C for 24 hrs and their 7 days uniaxial compressive strength was measured. After curing and drying, the bulk density, water absorption and apparent porosity of geopolymer samples were evaluated.X-ray powder diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and thermogravimetry-differential thermal analysis (TGA-DTA) have been used for the structural characterization of the CFA and the resulting geopolymers. The highest compressive strength of 32.4 MPa was achieved for the fly ash milled for 30 minutes and activated with the solution containing the sodium silicate and 10M sodium hydroxide at a weight ratio of 2:1. Non-milled CFA based geopolymers showed the compressive strength of 16.2 MPa after activation with the same solution. Mechanical activation resulted in an increase in the reactivity of the fluidized bed fly ash and that enhances the geopolymerization reactions.
Comparison Study on Antimicrobial and Photocatalytic Activity of Different Shaped ZnO Nanoparticles
Authors: Tsogoo Ariunzaya , Batmandakh Solongo , Ganbold Erdene-Ochir , Tsedev Ninjbadgar , Daniel Philippe , Gibaud Alain , Bilegsaikhan Arvin , Dashzeveg Rentsenmyadag
Published: March 2019

ZnO nanoparticles (ZnO NPs) were synthesized through surfactant free non-hydrolytic organic phase method in which zinc acetate and zinc acetylacetonate were selected as precursors. Structural and size analysis of the as-prepared nanoparticles performed on X-ray diffractometer, transmission electron microscopy, scanning electron microscopy with energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy showed that the obtained nanoparticles were crystalline particles with all reflections matching to wurtzite. TEM images revealed that ZnO NPs from synthesis in which zinc acetate involved as precursor had a shape of sphere while zinc acetylacetonate resulted in rod-shaped nanoparticles. Reaction rates from catalytic activity test performed on Methylene Blue dye (MB) were found to be 2.99×10-2 min-1 and 1.98×10-2 min-1 for spherical and rod-shaped ZnO NPs, respectively. Antibacterial activity experiments shows rod-shaped ZnO NPs almost completely (99.75%) inhibited the growth of Escherichia Coli while only around 6.5% was survived after treatment of spherical ZnO NPs under same conditions.
Density Functional Theory Study of the Energy Landscapes for the Channeling of Li in LiFePO4
Authors: Tankhilsaikhan Batsaikhan , Gorfman Semen , Tungalag Naran , Tuvjargal Norovsambuu , Davaasambuu Jav , Pietsch Ullrich
Published: March 2019

By adopting the first-principles calculation based on density functional theory (DFT), the diffuse pattern and the energy landscape for Li transfer in the LiFePO4 are investigated for the three different directions. The results of relaxed structure are compared with those of the non-relaxed structure and the energy barriers are significantly reduced and the effect of structure relaxation is most obvious for Li displacement along [100] direction. Energy barrier for the Li diffusion along [010] direction is lower than the other two direction in both calculation which indicates that the Li diffusion in LiFePO4 is one dimensional.
Voevodsky's conjecture for cubic fourfolds and Gushel–Mukai fourfolds via noncommutative K3 surfaces
Authors: Ornaghi Mattia , Pertusi Laura
Published: March 2019

In the first part of this paper we will prove the Voevodsky’s nilpotence conjecture for smooth cubic fourfolds and ordinary generic Gushel–Mukai fourfolds. Then, making use of noncommutative motives, we will prove the Voevodsky’s nilpotence conjecture for generic Gushel–Mukai fourfolds containing a

\tau

-plane Gr(2, 3) and for ordinary Gushel–Mukai fourfolds containing a quintic del Pezzo surface.
Jóvenes y subjetividad negada: Apuntes para pensar la intervención socioeducativa sobre prácticas autolesivas y suicidio
Authors: Kaplan Carina V. , Szapu Ezequiel
Published: March 2019

La negación de la subjetividad producto de las desigualdades provoca en las y los jóvenes estudiantes sentimientos de vacío existencial que pueden conducir a actos de violencia contra sí mismos. Los fenómenos de autoagresiones físicas y suicidio son expresiones de un dolor social que no logra ser canalizado por otras vías. En este trabajo se presentan una serie de resultados de una investigación de carácter socioeducativo cuyo propósito es comprender la construcción social de las emociones en la vida escolar y sus relaciones con la producción de las violencias. A partir de entrevistas en profundidad  se interpreta la perspectiva estudiantil en función de identificar y caracterizar las problemáticas vinculadas a las prácticas de suicidio y autolesión. Al aumentar la recurrencia entre la población joven y atravesar la trama escolar, dichos fenómenos comienzan a ocupar un lugar destacado en la agenda de políticas públicas y en la elaboración de estrategias destinadas a la intervención socioeducativa.
Convivencia Escolar: Una revisión del concepto
Authors: Fierro-Evans Cecilia , Carbajal-Padilla Patricia
Published: March 2019

El presente trabajo reporta un ejercicio de revisión del concepto de convivencia escolar con vistas a apoyar su clarificación y, por tanto, contribuir al desarrollo de un lenguaje común en la región latinoamericana. Para ello las autoras conducen un trabajo documental orientado a identificar los principales enfoques teóricos en la literatura de convivencia. Posteriormente analizan cuatro estudios enfocados a sistematizar los enfoques prevalecientes en el estudio de la convivencia escolar. Como resultado, proponen un concepto de convivencia desde la perspectiva de la justicia social adaptada a la educación y lo operacionalizan en tres ámbitos de la vida escolar: pedagógico-curricular, oganizativo-administrativo y socio-comunitario. Esta noción comprehensiva de la convivencia escolar podría apoyar la realización de investigaciones futuras, propuestas educativas y evaluaciones de convivencia escolar que ofrezcan una respuesta a la violencia y a la persistente exclusión social que existe en la región latinoamericana.
Aerosol–Cloud Closure Study on Cloud Optical Properties using Remotely Piloted Aircraft Measurements during a BACCHUS Field Campaign in Cyprus
Authors: Calmer Radiance , Roberts Gregory C. , Sanchez Kevin J. , Sciare Jean , Sellegri Karine , Picard David , Vrekoussis Mihalis , Pikridas Michael
Published: March 2019

Abstract. In the framework of the EU-FP7 BACCHUS project, an intensive field campaign was performed in Cyprus (2015/03). Remotely Piloted Aircraft System (RPAS), ground-based instruments, and remote-sensing observations were operating in parallel to provide an integrated characterization of aerosol-cloud interactions. Remotely Piloted Aircraft (RPA) were equipped with a 5-hole probe, pyranometers, pressure, temperature and humidity sensors, and measured updraft velocity at cloud base and cloud optical properties of a stratocumulus layer. Ground-based measurements of dry aerosol size distributions and cloud condensation nuclei spectra, and RPA observations of vertical wind velocity and meteorological state parameters are used here to initialize an Aerosol–Cloud Parcel Model (ACPM) and compare the in situ observations of cloud optical properties measured by the RPA to those simulated in the ACPM. Two different cases are studied with the ACPM, including an adiabatic case and an entrainment case, in which the in-cloud temperature profile from RPA is taken into account. Adiabatic ACPM simulation yields cloud droplet number concentrations at cloud base (ca. 400 cm−3) that are similar to those derived from a Hoppel minimum analysis. Cloud optical properties have been inferred using the transmitted fraction of shortwave radiation profile measured by downwelling and upwelling pyranometers mounted on a RPA, and the observed transmitted fraction of solar radiation is then compared to simulations from the ACPM. ACPM simulations and RPA observations show better agreement when associated with entrainment compared to that of an adiabatic case. The mean difference between observed and adiabatic profiles of transmitted fraction of solar radiation is 0.12, while this difference is only 0.03 between observed and entrainment profiles. A sensitivity calculation is then conducted to quantify the relative impacts of two-fold changes in aerosol concentration, and updraft velocity to highlight the importance of accounting for the impact of entrainment in deriving cloud optical properties, as well as the ability of RPAs to leverage ground-based observations for studying aerosol–cloud interactions.
Monitoring potential ionospheric changes caused by the Van earthquake (Mw7.2)
Authors: Inyurt Samed , Peker Selcuk , Mekik Cetin
Published: March 2019

Abstract. Many scientists from different disciplines have studied earthquakes for many
years. As a result of these studies, it has been proposed that some changes
take place in the ionosphere layer before, during or after earthquakes, and
that the ionosphere should be monitored in earthquake prediction studies.
This study investigates the changes in the ionosphere created by the
earthquake with a magnitude of Mw=7.2 in the northwest of Lake
Erçek, which is located to the north of the province of Van in Turkey on
23 October 2011 and at 13:41 local time (−3 UT) with the epicenter of
38.75∘ N, 43.36∘ E using the TEC values obtained by the
global ionosphere models (GIMs) created by IONOLAB-TEC and CODE. In order to
see whether the ionospheric changes obtained by the study in question were
caused by the earthquake or not, the ionospheric conditions were studied by
utilizing indices providing information on solar and geomagnetic activities
(F10.7 cm, Kp, Dst). One of the results of the statistical test of the TEC values obtained from
both models is positive and negative anomalies obtained for the times before,
on the day of and after the earthquake, and the reasons for these anomalies
are discussed in detail in the last section of the study. As the ionospheric
conditions on the analyzed days were highly variable, it was thought that the
anomalies were caused by geomagnetic effects, solar activity and the
earthquake.
Densified multi-mission observations by developed optical water levels show marked increases in lake water storage and overflow floods on the Tibetan Plateau
Authors: Li Xingdong , Long Di , Huang Qi , Han Pengfei , Zhao Fanyu , Wada Yoshihide
Published: March 2019

Abstract. The Tibetan Plateau (TP) known as Asia's water towers is quite sensitive to climate change, reflected by changes in hydrological state variables such as lake water storage. Given the extremely limited ground observations on the TP due to the harsh environment and complex terrain, we exploited multisource remote sensing, i.e., multiple altimetric missions and Landsat archives to create dense time series (monthly and even higher such as 10 days on average) of lake water level and storage changes across 52 large lakes (> 100 km2) on the TP during 2000–2017 (the data set is available online with a DOI: https://doi.org/10.1594/PANGAEA.898411). Field experiments were carried out in two typical lakes to validate the remotely sensed results. With Landsat archives and partial altimetry data, we developed optical water levels that cover most of TP lakes and serve as an ideal reference for merging multisource lake water levels. The optical water levels show an uncertainty of ~ 0.1 m that is comparable with most altimetry data and largely reduce the lack of dense altimetric observations with systematic errors well removed for most of lakes. The densified lake water levels provided critical and accurate information on the long-term and short-term monitoring of lake water level and storage changes on the TP. We found that the total storage of the 52 lakes increased by 97.3 km3 at two stages, i.e., 6.68 km3/yr during 2000–2012 and 2.85 km3/yr during 2012–2017. The total overflow from Lake Kusai to Lake Haidingnuoer and Lake Salt during Nov 9–Dec 31 in 2011 was estimated to be 0.22 km3, providing critical information on lake overflow flood monitoring and prediction as the expansion of some TP lakes becomes a serious threat to surrounding residents and infrastructure.
Development of a dynamic dust source map for NMME-DREAM v1.0 model based on MODIS Normalized Difference Vegetation Index (NDVI) over the Arabian Peninsula
Authors: Solomos Stavros , Abuelgasim Abdelgadir , Spyrou Christos , Binietoglou Ioannis , Nickovic Slobodan
Published: March 2019

Abstract. We developed a time-dependent dust source map for the NMME Dust Regional Atmospheric Model
(DREAM v1.0) based on the satellite MODIS Normalized Difference Vegetation
Index (NDVI). Areas with NDVI <0.1 are classified as active dust sources.
The updated modeling system is tested for dust emission capabilities over SW
Asia using a mesoscale model grid increment of 0.1∘×0.1∘ for a period of 1 year (2016). Our results indicate significant
deviations in simulated aerosol optical depths (AODs) compared to the static
dust source approach and general increase in dust loads over the selected
domain. Comparison with MODIS AOD indicates a more realistic spatial
distribution of dust in the dynamic source simulations compared to the static
dust sources approach. The modeled AOD bias is improved from −0.140 to
0.083 for the case of dust events (i.e., for AOD >0.25) and from −0.933
to −0.424 for dust episodes with AOD >1. This new development can be
easily applied to other time periods, models, and different areas worldwide
for a local fine tuning of the parameterization and assessment of its
performance.
Characterizing the potential for drought action from combined hydrological and societal perspectives
Authors: Towler Erin , Lazrus Heather , PaiMazumder Debasish
Published: March 2019

Abstract. Drought is a function of both natural and human influences, but fully
characterizing the interactions between human and natural influences on
drought remains challenging. To better characterize parts of the drought
feedback loop, this study combines hydrological and societal perspectives to
characterize and quantify the potential for drought action. For the
hydrological perspective, we examine historical groundwater data, from which
we determine the decadal likelihoods of exceeding hydrologic thresholds
relevant to different water uses. Stakeholder interviews yield data about how
people rate the importance of water for different water uses. We combine
these to quantify the Potential Drought Action Indicator (PDAI). The PDAI is
demonstrated for a study site in south-central Oklahoma, where water
availability is highly influenced by drought and management of water
resources is contested by local stakeholders. For the hydrological
perspective, we find that the historical decadal likelihood of exceedance for
a moderate threshold associated with municipal supply has ranged widely: from
23 % to 75 %, which corresponds well with natural drought variability
in the region. For the societal perspective, stakeholder interviews reveal
that people value water differently for various uses. Combining this
information into the PDAI illustrates that potential drought action increases
as the hydrologic threshold is exceeded more often; this occurs as conditions
get drier and when water use thresholds are more moderate. The PDAI also
shows that for water uses where stakeholders have diverse views of
importance, the PDAI will be diverse as well, and this is exacerbated under
drier conditions. The variability in stakeholder views of importance is
partially explained by stakeholders' cultural worldviews, pointing to some
implications for managing water when drought risks threaten. We discuss how
the results can be used to reduce potential disagreement among stakeholders
and promote sustainable water management, which is particularly important for
planning under increasing drought.
Large spatial variations in the flux balance along the front of a Greenland tidewater glacier
Authors: Wagner Till J. W. , Straneo Fiamma , Richards Clark G. , Slater Donald A. , Stevens Laura A. , Das Sarah B. , Singh Hanumant
Published: March 2019

Abstract. The frontal flux balance of a medium-sized tidewater glacier in western
Greenland in the summer is assessed by quantifying the individual components
(ice flux, retreat, calving, and submarine melting) through a combination of
data and models. Ice flux and retreat are obtained from satellite data.
Submarine melting is derived using a high-resolution ocean model informed by
near-ice observations, and calving is estimated using a record of calving
events along the ice front. All terms exhibit large spatial variability along
the ∼5 km wide ice front. It is found that submarine melting accounts
for much of the frontal ablation in small regions where two subglacial
discharge plumes emerge at the ice front. Away from the subglacial plumes,
the estimated melting accounts for a small fraction of frontal ablation.
Glacier-wide, these estimates suggest that mass loss is largely controlled by
calving. This result, however, is at odds with the limited presence of
icebergs at this calving front – suggesting that melt rates in regions
outside of the subglacial plumes may be underestimated. Finally, we argue
that localized melt incisions into the glacier front can be significant
drivers of calving. Our results suggest a complex interplay of melting and
calving marked by high spatial variability along the glacier front.
Brief communication: A submarine wall protecting the Amundsen Sea intensifies melting of neighboring ice shelves
Authors: Gürses Özgür , Kolatschek Vanessa , Wang Qiang , Rodehacke Christian B.
Published: March 2019

Abstract. Disintegration of ice shelves in the Amundsen Sea has the potential to cause sea level rise by inducing an acceleration of grounded ice streams. Moore et al. (2018) proposed that using a submarine wall to block the penetration of warm water into the ice shelf cavities could reduce this risk. We use a global sea ice-ocean model to show that a wall shielding the Amundsen Sea below 350 m depth successfully suppresses the inflow of warm water and reduces ice shelf melting. However, the warm water gets redirected towards neighboring ice shelves, which reduces the effectiveness of the wall.
Management Strategy of Jatiluwih Tourist Attraction as Part of World Cultural Heritage in Tabanan Regency, Bali Province
Authors: Widari Dewa Ayu Diyah Sri , Antara Made , Paturusi Syamsul Alam
Published: March 2019

Various attempts have been made to achieve the goals of the management of Jatiluwih Tourist Attractions as part of the World Cultural Heritage, but there are some obstacles in its implementation. This research aims to develop strategies and programs in the management of sustainable Jatiluwih Tourist Attraction as part of the World Cultural Heritage. This study used qualitative methods supported by quantitative data through the use of Interpretive Structural Modeling (ISM) analysis. Data collection was conducted through interviews, Focus Group Discussion, and document studies. The ISM (expert survey) questionnaire as a research instrument was used to obtain information about the contextual relations of each element in the Interpretive Structural Modeling (ISM) analysis involving 11 experts. The results of the study indicate that the management of Jatiluwih Tourist Attraction as part of the World Cultural Heritage requires strategies and programs for sustainability. The formulated strategies are management more structured to increase tourist visits and improve community welfare; increasing the competence of human resources to increase participation; infrastructure development and diversification of tourism products; and increasing support for the preservation of cultural heritage sites through increase community awareness, land use policies, and the involvement of all stakeholders. Programs are formulated based on the strategies set.
“To the green earth's end”: Milton and the Geographies of A Mask
Authors: Achinstein Sharon
Published: March 2019

Milton's A Mask Presented at Ludlow Castle has long been understood to engage an ethical debate about the proper use of nature, and this article establishes a previously neglected biographical context for understanding the literary, ethical, and historical contexts for that debate. By exploring the multiple geographies of A Mask (local, literary, and global), the article understands Milton's engagement with the moral discussion of the commercial enterprises of early modern Britain and thinks about ideas of geography as a means of interpretation.
Impacto da força muscular de membro inferior na capacidade funcional de idosas com osteoporose praticantes de hidroginástica
Authors: Vicentini de Oliveira Daniel , Lopes Pereira Miranda de araújo Vanessa , Capra de Oliveira Dayane , Dias Antunes Mateus , Andrade do Nascimento Júnior José Roberto
Published: March 2019

O envelhecimento populacional é considerado atualmente um fenômeno mundial acompanhado por um declínio fisiológico das funções. A capacidade funcional é essencial para os idosos realizarem as atividades de vida diária e a hidroginástica apresenta inúmeros benefícios para melhora da qualidade de vida dos idosos praticantes. Trata-se de uma pesquisa quantitativa, observacional e transversal com idosas praticantes de hidroginástica. Para coleta de dados, foram utilizados a Escala de Katz e de Lawton e o teste de Levantar e Sentar da cadeira. Os dados foram analisados por meio da estatística descritiva e inferencial. A maioria das idosas eram casadas (68,6%) e 38,6% tinham idade entre 60 e 70 anos. Verificou-se que 14,2% das idosas apresentaram bom nível de força muscular e 71,4% eram independentes nas atividades básicas de vida diária(ABVDs) e 68,6% eram dependentes nas atividades instrumentais de vida diária (AIVDs). Houve correlação significativa (p < 0,05) e positiva da força muscular com as ABVDs (r = 0,45) e AIVDs (r = 0,35). A força muscular apresentou impacto significativo (p<0,05) na variabilidade das AB VDs (17%) e AIVDs (11%). Conclui-se quea força muscular de membro inferior auxilia positivamente na capacidade funcional de idosas com osteoporose praticantes de hidroginástica.
Training model for online nurse educators
Authors: Stanley Mary Jo , Martin Carolyn
Published: March 2019

Background and objective: Online instruction is very different from teaching in a face-to-face setting and educators may lack formal pedagogical training specific to online instruction; in addition, online instructors may feel isolated and have less access to direct support than their counterparts on campus. The objective of this study was to promote best practice in online education through faculty support and professional development; a structured online training process was created.Methods: Design: Instructors that teach in the online venue need teaching and training to feel comfortable with the technology and online pedagogy strategies that support best practice in online education. A structured training process was created to support novice online educators. Setting: Nursing faculty and Masters of Science in Nursing education track students co-taught one online class together. Participants: Faculty and senior level Masters of Science in Nursing education track students were asked to reflect on their one-year teaching and training experience as educators. Methods: Qualitative analysis using Denzin’s interpretive interactionism was used to elicit meaning from participant experiences.Results: Four themes emerged from the data; online pedagogy, knowledge acquisition, mentor-mentee role, and online nurse educator. These themes align with the scholarship of teaching, discovery, application, and integration, respectively. The Training Model for Online Nurse Educators was developed to show this relationship.Conclusions: Using Boyer’s model of scholarship as a framework for online training can prepare instructors for the online nurse educator role. Online instructional delivery is a mainstay in education necessitating nurse educators who are prepared to apply best practice strategies in online education.
Maluco, louco, pirado: as dificuldades de resposta no questionário do ALiB para a lexia doido e o papel do inquiridor
Authors: DALTO Vanessa LINI
Published: March 2019

RESUMO: A Geolinguística brasileira tem alcançado inúmeros avanços nas últimas décadas. Entre as conquistas desta área destaca-se o Projeto ALiB – Atlas linguístico do Brasil (CARDOSO et al, 2014), obra que descreve a realidade linguística do país. Baseando-se neste grandioso trabalho, o presente estudo pretende analisar entrevistas do Projeto ALIB, no que tange à Região Sudeste do país (São Paulo, Rio de Janeiro, Vitória e Belo Horizonte), quanto às dificuldades enfrentadas pelo inquiridor ao aplicar o questionário fonético-fonológico (QFF). Para tanto, selecionaram-se 32 entrevistas, referentes à questão de número 138, que procura investigar as variações fonéticas para a lexia “doido”. Por se tratar de uma questão que apresenta dificuldade na obtenção da resposta, busca-se com a análise do corpus, observar o papel do inquiridor na recolha de dados completos e adequados para os fins almejados.
O alçamento e o abaixamento da pretônica /O/ nos Atlas Linguísticos do Ceará, Paraíba e Bahia
Authors: Silva Patrícia Jéssica Rocha , Araújo Aluiza Alves de , Viana Rakel Beserra de Macedo
Published: March 2019

Este trabalho pretende investigar as regras de alçamento e abaixamento da vogal média pretônica /O/, à luz da Sociolinguística Variacionista (LABOV, [1972] 2008; WEINREICH; LABOV; HERZOG, [1968] 2006), analisando a influência dos fatores sociais sexo (feminino e masculino), faixa etária (de 20 a 60 anos e acima de 60 anos), escolaridade (não alfabetizados e alfabetizados) e localidade (Ceará, Paraíba e Bahia) que favorecem ambas as regras. Para tanto, foram observadas as ocorrências das variantes /o/, /u/ e // presentes nas cartas fonéticas dos Atlas Linguísticos da Bahia (ROSSI; ISENSÉE; FERREIRA, 1963), da Paraíba (ARAGÃO; MENEZES, 1984) e do Ceará (BESSA, 2010a, 2010b). Os dados foram coletados, codificados e submetidos às análises estatísticas do programa Goldvarb X. Os resultados revelaram que há uma predominância da regra de elevação no Ceará e na Bahia em oposição à manutenção da pretônica /O/, já na Paraíba prevalece a regra de abaixamento desta pretônica.
A prática da oralidade em sala de aula: a perspectiva dos professores de língua portuguesa da rede básica de ensino
Authors: Silva Érica Danielle , Ferragini Neluana Leuz de Oliveira , Vieira Greyce Nathany Lopes
Published: March 2019

O presente trabalho tem como recorte temático o domínio discursivo da prática da oralidade. Dentre as práticas previstas para o ensino de língua portuguesa nas DCE (2008) é comum que os professores de língua portuguesa considerem a oralidade como mais informal e mais passível de erros do que a prática da escrita. Neste trabalho, fundamentado em Dolz e Schneuwly (2011) e Marcuschi (1997; 2010), a proposta é refletir sobre a importância da oralidade, enquanto prática discursiva, e, sobretudo, sobre seu ensino nas aulas de língua portuguesa. A concepção e o modo como a prática da oralidade é considerada em sala de aula foram analisados por meio de questionários aplicados a professores de Língua Portuguesa da rede básica de ensino. Este corpus de análise mostrou que o ensino-aprendizagem da oralidade enquanto prática discursiva é tardio e pouco realizado. Os professores demonstraram uma concepção superficial de oralidade e um trabalho que não privilegia a prática de produção oral, já que os gêneros escritos são indicados como os mais trabalhados em sala de aula.
Língua Portuguesa no Timor-Leste: escrita e autoria
Authors: Guimarães Joice Eloi
Published: March 2019

A língua portuguesa, a partir de 2002, passou a configurar como língua oficial e de instrução em Timor-Leste, juntamente com a língua tétum. Atualmente a língua portuguesa está sendo reintroduzida no país, com ações que recaem, sobretudo, em mudanças nos currículos escolares e na formação docente. A experiência com a formação de professores e futuros professores do ensino básico de Timor-Leste permitiu-nos observar que entre as dificuldades que esses sujeitos apresentam no que diz respeito à língua portuguesa a produção de textos ocupa lugar de destaque. Tendo em vista esse contexto, neste trabalho, analisamos as dificuldades com a produção e escrita da monografia em língua portuguesa de alunos concluintes do curso de Formação de Professores do Ensino Básico da Universidade Nacional de Timor Lorosa'e (UNTL). A análise dos enunciados de 27 alunos/as foi realizada tendo como referência a teoria do dialogismo de Mikhail Bakhtin, ressaltando, como categorias para análise, os conceitos de cronotopo e entonação (BAKHTIN, 2011). Com base na análise empreendida podemos afirmar que a grande maioria dos sujeitos integrantes desta pesquisa aponta a língua portuguesa como maior obstáculo para a escrita da monografia. Contudo, apesar dessa dificuldade, valora positivamente a obrigatoriedade da escrita desse gênero em português. Além disso, suas respostas conduzem à relação entre o domínio da linguagem e a capacidade de argumentação e sinalizam a dificuldade do sujeito sentir-se autor-criador, na acepção que confere Bakhtin a esse termo, de sua produção escrita em uma língua não materna.
Terminologia em contexto normativo relacionada com a entrada de estudantes na Universidade: uma pesquisa sobre a UNILA e a UNE
Authors: Pascua Vílchez Fidel , Mattos Schmidt Isabel , Kaiser da Silva Elisane Andressa
Published: March 2019

no presente artigo, é analisado, desde uma perspectiva terminológica, o léxico  do marco normativo universitário (MNU) da Universidade Federal da Integração Latino-Americana (UNILA) e da Universidad Nacional del Este (UNE), relacionado com a entrada de estudantes nessas instituições. Com base em Wüster, Gouadec, Cabré e Krieger & Finatto, a problemática é analisada desde dois pontos de vista: nacional- monolíngue e binacional-bilíngue. Foram estabelecidos dois corpora de documentos: um em português, composto por documentos do MNU da UNILA e outro em espanhol, por documentos da UNE; foram extraídos os termos e organizadas as fichas terminológicas; depois, foram estabelecidas as relações de equivalência entre conceitos de diferentes MNUs, para sua adequação da língua de partida à língua meta. Foram elaborados  uma base de dados terminológica e um glossário bilíngue, destinados a auxiliar na recepção e produção de textos especializados relacionados com âmbito universitário a discentes, docentes, Técnicos Administrativos em Educação (TAEs), tradutores profissionais e intérpretes. É concluído que: a) os estudantes, quando chegam às instituições, possuem um conhecimento prévio da terminologia acadêmica que não resulta suficiente para entender com precisão os documentos do MNU; b) ambas universidades priviliegiam as línguas hegemônicas em seus MNUs, chamando a atenção o caso do Paraguai, país oficialmente bilíngue espanhol-guarani, pois o MNU da UNE está apenas escrito em espanhol; c) existe uma grande quantidade de siglas nos documentos do MNU que nem sempre vêm acompanhadas de seu significado explícito, dificultando a compreensão do leitor.
La traducción funcional en los libros didácticos de español del pnld 2012
Authors: Pontes Valdecy Oliveira , Silva Tatiane Xavier
Published: March 2019

El presente artículo es resultado del análisis de los libros didácticos de español del Plan Nacional del Libro Didáctico- PNLD 2012, propuesto por el ministerio de educación (MEC) en Brasil. El objetivo de este trabajo es analizar, bajo una perspectiva funcionalista, los ejercicios de traducción en los libros didácticos. Son respectivamente: El arte de leer -español, Enlaces-Español para jóvenes brasileños y Síntesis - Curso de lengua española. Para tanto, elaboramos un cuestionario que aporta preguntas sobre el abordaje de la traducción. Como marco teórico, utilizamos las contribuciones de Christiane Nord (1991,2005, 2012), Katharina Reiss y Hans J. Vermeer (1996) de la corriente funcionalista de la traducción. A partir del análisis, concluimos que los libros didácticos, al utilizar la traducción como recurso didáctico para la enseñanza de lenguas, no se encuadran dentro de las sugerencias y orientaciones que propone la teoría funcional de la traducción, pues, al explotar tal recurso, no presentan informaciones de género, lugar, tiempo, funciones del texto base y meta, público receptor entre otros que están puestos en la guía de análisis, para realizar la actividad de traducción. Por fin, tras los resultados obtenidos, presentamos una reelaboración de las actividades, teniendo en cuenta la perspectiva funcional.
Concepções de linguagem subjacentes à coleção português linguagens – ensino médio (1994-2013): um olhar sobre o tratamento dado aos gêneros discursivos
Authors: Da Silva Silvio Profirio , De Lucena Josete Marinho
Published: March 2019

Este trabalho tem como objetivo conhecer as concepções de linguagem subjacentes à Coleção Português Linguagens – Ensino Médio (1994-2013). Como objetivos específicos, pretendemos: (a) conhecer o tratamento dado aos gêneros discursivos (escritos e multimodais); (b) conhecer o tratamento dado aos eixos didáticos de ensino de língua. Para realização desses objetivos, recorremos aos subsídios da pesquisa documental, bem como da revisão de literatura. Os resultados demonstram que as duas versões da coleção são subsidiadas por concepções de linguagens distintas. Na primeira coleção, são notáveis os subsídios da concepção de linguagem como instrumento de comunicação. Na segunda, são notáveis os subsídios da concepção de linguagem como forma de interação. Isso fomenta a materialização de dois distintos tratamentos dados aos gêneros do discurso e aos eixos didáticos de ensino.
Detection of virulence genes and antimicrobial resistance profiles of Escherichia coli isolates from raw milk and artisanal cheese in Southern Brazil
Authors: Parussolo Leandro , Sfaciotte Ricardo Antônio Pilegi , Dalmina Karine Andrezza , Melo Fernanda Danielle , Costa Ubirajara Maciel , Ferraz Sandra Maria
Published: March 2019

The serrano artisanal cheese is a typical product from South region of Brazil, which is produced by skilled cheesemakers using raw milk. The contamination of this food by Escherichia coli has a great impact on public health, since it could threat the consumers’ health. The study evaluated the presence of virulence genes, antimicrobial susceptibility profiles and bofilm-production ability of Escherichia coli isolates obtained from raw milk and artisanal cheese produced in Southern Brazil. A total of 117 isolates of E. coli were characterized by multiplex PCR to detect the following virulence genes: eae for enteropatogenic E. coli (EPEC), lt and st for enterotoxigenic E. coli (ETEC), stx for shiga toxin-producing E. coli (STEC), stx and eae for enterohemorrhagic E. coli (EHEC), ipaH for enteroinvasive E. coli (EIEC) and aggR for enteroaggregative E. coli (EAEC). In addition, antimicrobial susceptibility profile to 22 antimicrobial agents was also performed by disk diffusion method, and we searched for extended-spectrum beta-lactamases (ESBL) and/or carbapenemase- producing isolates. Isolates that were positive for ESBL and carbapenemase were further investigated for the presence of the genes: blaTEM, blaSHV, blaOXA, blaCTX-M, for ESBL and blaOXA-48 for carbapenemase. Further, isolates had their ability to form biofilms investigated by the red Congo agar method. Virulence genes of E. coli were identified in 21.37% of the tested isolates, which were classified as EPEC (the most prevalent pathotype) and ETEC or EAEC. Ten (8.55%) of the total studied E. coli isolates revealed a multidrug-resistant profile, since they were resistant to three or more antimicrobial classes; whereas four isolates (3.42%) were classified as ESBL-producers and showed the presence of blaTEM gene. None of the isolates exhibited carbapenemase activity nor did they carry carbapenemase genes. From the total of E. coli isolates, 79 (67.52%) were considered potential biofilm producers. These results address a serious public health issue, since artisanal cheeses pose a risk to consumers’ health, since may be sources of dissemination of diarrheogenic E. coli, that can cause from subclinical to severe and fatal infections in children and adults, and also emphasize the need to improve adaptations/adjustments in the manufacturing processes of these products.
Variávéis relacionadas ao teor de extrato seco desengordurado em amostras de leite de tanques de resfriamento de estabelecimentos rurais
Authors: Arruda Junior Luis Carlos , Hauser Adriana , Alessio Dileta Regina Moro , Knob Deise Aline , França Marciel , Gomes Ivan Pedro de Oliveira , Thaler Neto André
Published: March 2019

The defatted dry extract (DDE) comprises of the solid constituents of the milk, except for the fat, and must have a minimum established content of 8.4% for raw milk in Brazil. The objective was to evaluate the effects of commercialized milk volume, somatic cell count (SCC) and total bacterial count (TBC) on the DDE content of dairy farm milk samples. The sampling included data from monthly milk analyzes of dairy farms, which supply four dairy industries located in the state of Santa Catarina, Paraná and Rio Grande do Sul, and comprised of 106.470 observations sampled in 2015.The data were submitted to variance and regression analysis. To evaluate the influence of the volume of milk commercialized by the farmers, the SCC and TBC levels, and the levels of DDE, the values of these explanatory variables were stratified in quintiles. The mean DDE was 8.55%, with 25.6% of the samples being below the established minimum. In regard to the volume of milk marketed by the farmers, seasonal variations were observed in all quintiles of dairy farms analyzed, but with lower levels of DDE in milk samples from small farms throughout the year. Samples of milk with high TBC and, especially high SCC, presented lower percentage of DDE during the year. It is concluded that the DDE content of milk is related to the season of the year, the production volume per dairy, SCC and TBC.