bluuebunny/crossref_metadata_2025 huggingface dataset:
Age and knowledge of morphosyntax in english as an additional language: grammatical judgment and error correction
Authors: Qureshi Muhammad Asif
Published: June 2018

Research on age and second language acquisition (L2A) is vast, but inconclusive. Such research has mainly been motivated by the Critical Period Hypothesis (CPH), which postulates that language acquisition becomes extremely difficult after the onset of puberty. Also, there is a lack of research on age and third/additional language (L3/Ln) learning. To fill this gap, this article examines differences in morphosyntactic knowledge between early and late learners of English as a L3/Ln. In this study, ‘early’ and ‘late’ learners are those participants first exposed to English as a medium of instruction (MOI) in 1st and 11th grades, respectively. Participants’ morphosyntactic knowledge was assessed based on two tasks: (a) a Grammaticality Judgment Task (GJT) and (b) an editing task. Three hundred and thirty five undergraduate and graduate students from two universities in Pakistan voluntarily participated in the research. Results of the group comparisons showed no statistically significant differences between early and late learners on the GJT; however, on the editing task, a modest but significant difference was observed between the two groups, with late learners scoring higher. This finding contradicts the predictions of the CPH.
Beginning and intermediate L2 writer’s use of N-grams: an association measures study
Authors: Garner Jamie , Crossley Scott , Kyle Kristopher
Published: June 2018

Acommon approach to analyzing phraseological knowledge in first language (L1) and second language (L2) learners is to employ raw frequency data. Several studies have also analyzed n-gram use on the basis of statistical association scores. Results from n-gram studies have found significant differences between L1 and L2 writers and between intermediate and advanced L2 writers in terms of their bigram use. The current study expands on this research by investigating the connection between bigram and trigram association measures and human judgments of L2 writing quality. Using multiple statistical association indices, it examines bigram and trigram use by beginner and intermediate L1 Korean learners of English in English placement test essays. Results of a logistic regression indicated that intermediate writers employed a greater number of strongly associated academic bigrams and spoken trigrams. These findings have important implications for understanding lexical development in L2 writers and notions of writing proficiency.
Antioxidant-mediated neuroprotection by Allium schoenoprasum L. leaf extract against ischemia reperfusion-induced cerebral injury in mice
Authors: Singh Varinder , Krishan Pawan , Shri Richa
Published: June 2018

Background

Oxidative stress is strongly implicated in ischemia reperfusion (IR)-mediated functional and neuronal impairment. Therefore, strategies employing antioxidants to reverse the damage due to IR are being investigated. Allium schoenoprasum L. is a culinary medicine whose antioxidant properties are well documented but whose neuroprotective potential has not been examined. Hence, the present study was designed to evaluate the effect of A. schoenoprasum leaf extract (ASLE) on functional deficit against IR-induced cerebral injury in mice.

Methods

Acute toxicity studies of ASLE were performed following the Organisation for Economic Co-operation and Development Guideline 423. IR injury was induced by bilateral common carotid artery occlusion (BCCAO) for 15 min followed by 24-h reperfusion. Animals were treated for 7 days with ASLE (200 and 400 mg/kg, p.o. once daily) after IR injury. Functional outcomes (memory and sensorimotor functions) were measured using Morris water maze and neurological severity score, respectively. Cerebral infarct size and oxidative stress (thiobarbituric acid reactive species (TBARS), reduced glutathione (GSH), and superoxide dismutase (SOD) activity) were measured in order to elucidate the neuroprotective mechanism of ASLE.

Results

No toxic effects of ASLE were observed in mice. Oral treatment with ASLE for 7 days significantly attenuated IR-mediated memory and sensorimotor function deficit in the animals. The extract also reduced the cerebral infarct size and rise in brain TBARS levels, and restored the GSH levels and SOD activity.

Conclusions

The results of the present study suggest that ASLE is safe and effective in improving functional outcomes. It demonstrates neuroprotective effect by enhancing the antioxidant defence against IR injury.
„One of the bright spots in German economics“
Authors: Take Gunnar
Published: June 2018

This paper analyses the relationship between the German Kiel Institute of World Economics and the Rockefeller Foundation in the years 1925-1950. It focuses on the role of politics in the promotion of science and shows the great difficulties the foundation had in developing a strategy to react to the Nazi’s seizure of power in 1933. The Kiel Institute disguised itself as an unpolitical and “objective” institute and managed to regain support after 1934. During the Second World War, the Rockefeller Foundation abandoned the idea of science as an area detached from politics by definition. In the late 1940s, it carefully reassessed the German academic landscape and, in the case of the Kiel Institute, came to the conclusion not to resume a significant amount of support.
Corporate Social Responsibility und globales Wirtschaftsrecht
Authors: Simons Cornelius
Published: June 2018

Der vorliegende Beitrag umreißt Themen, die für die Unternehmenspraxis im Umgang mit CSR-Belangen von besonderer Bedeutung sind. Ausgangspunkt ist dabei die „Rechtsqualität“ von CSR. Werden klassische hard law-, Corporate Governance- und Vertragskonzepte beiseite gelassen, verbleibt ein weiter Kernbereich „klassischer“ CSR, deren einzelne Elemente zwar ein unterschiedliches Maß an Verbindlichkeit beanspruchen. Allen gemeinsam sind jedoch die Herausforderungen, die sie in puncto Rechtssicherheit, demokratischer Legitimation und unternehmerischer Freiheit an die ihnen Unterworfenen stellen. Diesen Herausforderungen wird anhand von Beispielsfällen nachgespürt.
Geschäftsleiterpflichten zwischen Legalität und Legitimität
Authors: Vetter Jochen
Published: June 2018

Der Beitrag befasst sich mit der Frage, ob und in welchem Umfang der Vorstand einer Aktiengesellschaft berechtigt ist, CSR-Belange auch dann zu berücksichtigen, wenn sie sich ökonomisch nicht rechtfertigen.
Investigations of Structural, Elastic, Electronic and Thermodynamic Properties of X2TiAl Alloys: A Computational Study
Authors: Al Selgin , Arikan Nihat , Iyigör Ahmet
Published: June 2018

First-principle calculations have been adopted in order to reveal and deeply understand the structural, electronic, elastic, thermodynamic, and vibrational properties of full-Heusler X2TiAl (X = Au, Ru, and Zr) alloys in the L21 phase. The fundamental physical properties such as bulk modulus, its pressure derivative, anisotropy factor, shear modulus, Poisson’s ratio, Cauchy pressure, elastic constants, heat capacity, thermal expansion coefficient, and Young’s modulus are obtained and compared with the literature. Debye temperature and Grüneisen parameter are also evaluated over the temperature range of 0–1500 K. Electronic band structures and their partial density of states and phonon dispersion curves are presented for all alloys and used to interpret the electronic and mechanical properties and stabilities of alloys in the L21 phase.
Polyfonctionnalité adverbiale, grammaticalisation et subjectivation : le cas de sérieusement, seriamente et en serio
Authors: Álvarez-Prendes Emma
Published: June 2018

In this paper we analyze the contemporary uses of three equivalent adverbs in French and Spanish (sérieusement, seriamente and en serio) in order to characterize them by some salient linguistic properties. We will also establish the emergence of these uses in the history of the French and Spanish languages and try to determine the historical links between them. To achieve these goals we have created a personal corpus with more than 200 occurrences of each adverb from very diverse types of texts (novels, journals, Internet, oral, data bases such as Frantext, Corpus Le Monde Diplomatique, Corpus de Referencia del Español Actual and Corpus Diacrónico del Español, etc.). Our main hypothesis is that those three adverbs are the result of a similar complex process of grammaticalization.
Aspetti sintattici e semantici di «nome + da + infinito» in diacronia
Authors: Mastrantonio Davide
Published: June 2018

In Modern Italian the syntagm «noun + da + infinitive» displays different syntactic features compared to Old Italian. After the subject has been introduced (§1), we first take into account some grammatical issues related to «da + inf.», namely: i) syntactic category; ii) verbal aspect; iii) voice (§2). After that, we focus on the description and explanation of the diachronic development concerning phrases like acqua da innaffiare gli orti, macchina da scrivere and so forth (§3).
Spigolature di anglicismi: a proposito di leggings e altri (recenti) forestierismi
Authors: Variano Angelo
Published: June 2018

The present article focuses on English-Italian language contact. In detail, we will show that supposedly recent borrowings such as leggings (GRADIT: 2004) or steward (1928) can already be observed in 19th-century Italian translations of English travel literature.
Is there a link between psychopathy and self-harm?
Authors: Campbell Lisa , Beech Anthony
Published: June 2018

The aim of this review was to examine whether there is a link between psychopathy and self-harm.  A systematic search identified 14 papers which examine this link. A quality appraisal checklist was used to evaluate the quality of each study. The application of the quality appraisal checklist showed that the majority of the studies had good internal validity; however, there were some biases that affected the external validity of some studies. The results indicated that there may be a positive association between total psychopathy score and self-harm; however some studies with smaller sample sizes and low rates of self-harm failed to show this association. The results of most of the studies showed a positive association between Factor 2 of the Psychopathy Checklist (PCL-R; Hare, 2003) and self-harm. No link was found between Factor 1 and self-harm. The results did not show consistent evidence for a link between any of the four facets and self-harm. Although this review indicates a link between Factor 2 and self-harm, and a possible link between total psychopathy score and self-harm, the small number of studies in this area means that the research is not robust enough to provide strong evidence for these associations.
Influence of Reactive and Maximum Strength Indicators on Sprint Performance
Authors: Healy Robin , Smyth Carol , Kenny Ian C. , Harrison Andrew J.
Published: June 2018

Healy, R, Smyth, C, Kenny, IC, and Harrison, AJ. Influence of reactive and maximum strength indicators on sprint performance. J Strength Cond Res 33(11): 3039–3048, 2019—The primary aim of this study was to assess the relationship between reactive and maximal strength measures with 40 m sprint performance and mechanical properties. Fourteen male and 14 female sprinters participated in this study. On the first day, subjects performed 40 m sprints with 10-m split times recorded in addition to maximal theoretical velocity, maximal theoretical force and peak horizontal power, which were calculated from force–velocity relationships. On the second day, subjects performed isometric midthigh pulls (IMTPs) with peak force (PF) and relative PF calculated, drop jumps (DJs) and vertical hopping where the reactive strength index (RSI) was calculated as jump height (JH) divided by contact time (CT). Pearson correlations were used to assess the relationships between measures and independent samples t-tests were used to assess the differences between men and women. No significant correlations were found between DJ and hopping RSI and sprint measures. A significant strong positive correlation was found between IMTP PF and peak horizontal power in men only (r = 0.61). The male sprinters performed significantly better in all recorded measures apart from hopping (CT, JH and RSI) and DJ CT where no significant differences were found. The lack of association between reactive and maximal strength measures with sprint performance is potentially because of the test's prolonged CTs relative to sprinting and the inability to assess the technical application of force. Several methods of assessing reactive strength are needed that can better represent the demands of the distinct phases of sprinting e.g., acceleration, maximum velocity.
Persinggungan Hak Budaya dan Hak Politik Dalam Pemilihan Umum dengan Sistem Noken Di Provinsi Papua
Authors: Multazim Zaimi
Published: June 2018

Abstrak. Persinggungan Hak Budaya dan Hak Politik Dalam Pemilihan Umum dengan Sistem Noken Di Provinsi Papua. Pemilu dengan sistem noken telah dilaksanakan di Papua sejak PEPERA tahun 1969. Berlanjut pada saat pemilu pertama kalinya di Papua, sistem noken ini  juga digunakan. Sistem ini dilaksanakan dengan cara permusyawaratan antara kepala suku dengan masyarakat. Uniknya, setelah permusyawaratan dilakukan, kepala suku akan memasukkan seluruh surat suara masyarakat ke dalam salah satu kantung (noken) yang telah disediakan. Dalam kasus seperti ini, Mahkamah konstitusi (MK)  pada Tahun 2009, melalui Putusan MK Nomor 47-81/PHPU.A-VII/2009 ternyata telah mengakomodir hasil pemilu yang menggunakan sistem ini. Mahkamah Konstitusi berpendapat bahwa sistem noken telah menjadi nilai dan budaya yang hidup di Papua, sehingga harus dihargai dan dilindungi. Namun, dikeluarkannya putusan ini telah menimbulkan pro dan kontra di tengah masyarakat. Di satu sisi sistem noken merupakan budaya yang telah lama hidup pada Masyarakat Papua, tetapi di sisi lain sistem ini telah menghilang hak pilih individu secara langsung dan telah menabrak asas pemilu “luber jurdil”. Kata Kunci: Noken, Papua, Pemilu
Perluasan Wewenang Mahkamah Konstitusi Dalam Memutus Sengketa Kewenangan Antar Lembaga Negara Hingga Lembaga Pemerintahan Tingkat Pusat dan Daerah
Authors: Fakhrazi Muhammad Helmi
Published: June 2018

Abstrak. Perluasan Wewenang Mahkamah Konstitusi dalam Memutus Sengketa Kewenangan Antar Lembaga Negara Hingga Lembaga Pemerintah Tingkat Pusat dan Daerah. Pembentukan Mahkamah Konstitusi dapat dipahami dari dua sisi, yaitu dari sisi politik dan dari sisi hukum. Dari sisi politik ketatanegaraan, keberadaan Mahkamah Konstitusi diperlukan guna mengimbangi kekuasaan pembentukan undang-undang yang dimiliki Dewan Perwakilan Rakyat dan Presiden. Hal itu diperlukan agar undang-undang tidak hanya menjadi legitimasi bagi tirani mayoritas wakil rakyat di Dewan Perwakilan Rakyat dan Presiden yang dipilih langsung oleh rakyat. Mengenai lembaga negara yang yang bersengketa dan penyelesaiannya pada mahakamah konstitusi adalah lembaga yang di atur dan kewenangannya diberikan oleh Undang-Undang Dasar 1945, adapun lembaga lembaga tersebut yaitu MPR, Presiden, Dewan Pertimbangan Presiden, Kementrian Negara, Pemerintah Daerah, (Pasal 18 ayat 2), DPRD Prov, DPRD Kab/Kota, DPR, DPD, KPU, BPK, MA, KY, TNI, POLRI. dari tujuh belas lembaga Negara, namun yang dapat menjadi pihak dalam Mahkamah Konstitusi hanya lima belas karena Mahkamah Agung dan Mahkamah Konstitusi yang merupakan pengecualian yang disebutkan diatas. Kata Kunci: Mahkamah Konstitusi, Sengketa Kewenangan Antar Lembaga Negara.
El plebiscito de 1984 por el canal Beagle en el discurso de la prensa patagónica argentina. El caso del diario Río Negro
Authors: Azcoitia Alfredo
Published: June 2018

En doscientos años como repúblicas independientes Chile y la Argentina emprendieron guerras contra todos sus vecinos pero jamás entre ellas. Sin embargo, en la navidad de 1978 la controversia sobre los límites del canal Beagle estuvo cerca de enfrentar a ambos países en el campo de batalla. Gracias a la oportuna mediación del Papa Juan Pablo II y al posterior retorno de la democracia en la Argentina, el diferendo logró resolverse pacíficamente con la firma de un acuerdo que contó con un abrumador apoyo de la población argentina, expresado a través del plebiscito de 1984. El presente artículo propone analizar los sentidos en torno al acuerdo y la consulta que circularon por las páginas del Río Negro, el diario más influyente de la Norpatagonia argentina. Para ello, incorporando herramientas teóricas del análisis del discurso, hemos relevado noticias, editoriales y notas de opinión publicadas en las secciones en las que el diario abordó información internacional, nacional y regional. Este trabajo permite demostrar que en el diario prevalecieron los discursos favorables al acuerdo por sobre aquellos que proponían una lectura negativa sobre el mismo. El diario presentó a los primeros como expresión del nuevo clima democrático que la sociedad argentina comenzaba a vivir.
Cambios demográficos en el estado de Campeche (México). Conflictos, desarrollo y economía, 1846-1910
Authors: Alcalá Ferráez Carlos
Published: June 2018

Este artículo presenta la relación entre crecimiento demográfico, inestabilidad política y desarrollo económico en el estado de Campeche entre 1846 y 1910. Este trabajo se elabora con base a los estudios de población de Robert Mc Caa, John Kicza, así como de Margarita Urías y Carlos San Juan, quienes relacionan las tendencias demográficas, el análisis de las cifras y la conformación económica de un territorio determinado. Se revisan censos y estimaciones, así como los informes y memorias de gobierno. El análisis muestra la migración de los moradores del estado de Campeche hacia la zona costera a partir de conflictos bélicos, el fracaso de los programas de la federación, lo que dio como consecuencia, el traslado de las personas hacia otras zonas del país y una detención del aumento de residentes de la entidad. Es un acercamiento para la elaboración de nuevas investigaciones que utilicen distintas series numéricas y el análisis más detallado de procesos socioeconómicos y naturales relacionados con los indicadores demográficos.
Producción, intercambio y tributación del algodón desde las tierras cálidas hacia los Andes centrales neogranadinos, siglos XVI y XVII
Authors: Vanegas Durán Claudia Marcela
Published: June 2018

Durante el proceso de colonización de los Andes centrales neogranadinos las mantas de algodón que tejían los indígenas se convirtieron en objetos muy apreciados lo que afectó sus dinámicas de producción, trabajo y comercio, que incluían el cultivo, transformación y abasto de la materia prima. Este artículo tiene como propósito comprender cómo los grupos indígenas de las zonas productoras del algodón cumplieron con la demanda, cuáles fueron los efectos sobre su modo de producción, organización social y vida cotidiana, y por último los cambios que se dieron en las relaciones políticas y comerciales que existían entre los naturales de las tierras cálidas y las tierras frías.
Entrevista a Ana Catalina Reyes Cárdenas: “…los historiadores deben trabajar… en lograr que la historia, como conocimiento, vuelva ser parte del pensum escolar”
Authors: Ramírez Bacca Renzo
Published: June 2018

Ana Catalina Reyes Cárdenas es una profesora-investigadora que sobresale en el gremio de los historiadores colombianos. En el XVIII Congreso Colombiano de Historia, realizado en Medellín entre el 10 y 13 de octubre de 2017,  recibió la distinción Jaime Jaramillo Uribe por haber “contribuido de manera decisiva y sobresaliente a divulgar y prestigiar el oficio de Historiador y la disciplina de la Historia”. No es la única distinción recibida. Un año antes fue distinguida como Profesora Emérita por la Universidad Nacional de Colombia, donde hizo sus estudios de pregrado y maestría en Historia. Ha recibido el Premio a la Excelencia Académica Nacional y la Medalla al Mérito Universitario por la misma universidad, así como la Medalla al Mérito Femenino por la Alcaldía de Medellín en 2009.
Movilidad y circulación geográfica. Niños y jóvenes en la provincia de Buenos Aires (Argentina), 1880-1919
Authors: De Paz Trueba Yolanda Edith , Bracamonte Lucía
Published: June 2018

En los pueblos del interior de la provincia de Buenos Aires, buscar la ayuda de allegados, parientes, asilos o Defensorías de Menores para criar a los hijos, fueron opciones generalizadas. Este artículo explora las distintas intervenciones que diversos actores sociales, institucionales y estatales ejercieron sobre tales situaciones entre fines del siglo XIX y las primeras décadas del XX, con especial énfasis en la movilidad de niños y jóvenes que implicaron esas estrategias.  La investigación presentada se basa en el análisis de elementos dispersos en documentos pertenecientes a Juzgados de Menores y de Paz, fuentes primarias de instituciones asilares y artículos periodísticos.  Se concluye que existía una preocupación extendida por la situación de los menores de edad considerados en riesgo, lo cual habilitó intervenciones sobre sus personas.  Como resultado de esos procesos, se advierte una alta movilidad de niños y jóvenes por diversos espacios geográficos y redes de sociabilidad.
Identification of enteroparasites in recreation areas of elementary schools in Northern Espírito Santo, Brazil
Authors: Fontes André Martins , Gusson Vinícius Ponath , De Souza Anelise Andrade , De Souza Marco Antônio Andrade
Published: June 2018

Objetivo Dado que la arena es un medio importante de contagio infantil por enteroparásitos, este estudio tuvo como objetivo realizar una evaluación parasitológica en áreas recreativas de escuelas primarias y centros de educación infantil, en São Mateus-ES.Materiales y Métodos Se tomaron muestras de arena en siete escuelas primarias municipales, en un jardín de infantes y en una guardería municipal. Para la recuperación de huevos de helmintos y quistes de protozoos, se usaron las técnicas de flotación y de sedimentación espontánea.Resultados Se encontró que el 77 % de las instituciones analizadas dieron positivo para huevos y larvas de helmintos. Entre los huevos y larvas identificados los principales fueron Ascaris lumbricoides y Toxocara canis. La prueba de ji-cuadrado de Pearson identifica los mejores resultados cuando se usa el método de sedimentación espontánea.Conclusión Teniendo en cuenta que las personas, especialmente los niños que viven en malas condiciones de saneamiento, son más propensas a enteropatías, los estudios apuntan a la necesidad de la aplicación de medidas preventivas y de educación sanitaria para la población inscrita en las escuelas municipales de São Mateus.
Objetos virtuales para el aprendizaje autorregulado de estudiantes de terapia ocupacional
Authors: Parra-Esquivel Eliana Isabel , Peñas-Felizzola Olga Luz , Gómez- Galindo Ana Maria
Published: June 2018

Objetivos Identificar las relaciones entre las características de los estudiantes, su ambiente de aprendizaje, su ocupación, y los objetos virtuales para el aprendizaje autorregulado a través de la observación participante. Aspectos importantes para la formación de profesionales de la salud.Métodos Estudio cualitativo aplicado a estudiantes que participaron en la asignatura Educación y Terapia Ocupacional. Se emplearon dos herramientas: Cuestionario Objetos Virtuales para el aprendizaje en el campo educativo y Observación participante. Al primer instrumento se le realizó pilotaje y revisión por experto.Resultados El estudio dio cuenta de datos demográficos y antecedentes de educación media similares, con relación a: procedencia, acceso al computador y exclusividad para estudiar; así como desarrollo de estudios de educación media en Bogotá y en instituciones privadas. En los ambientes de aprendizaje hay una tendencia a evidenciar que están de acuerdo con el programa de la asignatura: en cumplimiento de objetivos explícitos escogidos para el estudio en un 75 % e implícitos en un 60 %. En la ocupación, se encontró que el objeto virtual permitió profundizar sobre el tema que desarrollaron los estudiantes y poner en práctica conocimientos previos sobre tecnologías de la información y la comunicación. La observación participante arrojó particularidades en los elementos motivación, eficacia y aprendizaje autorregulado.Conclusiones La implementación de los Objetos Virtuales de Aprendizaje favorece en los estudiantes la motivación, el aprendizaje autorregulado y la apropiación de conceptos y conocimientos relacionados con la asignatura; por lo que se propone como estrategia de aprendizaje.
Evaluación de las barreras para la práctica de actividad física y deportiva en los adolescentes españoles
Authors: Espada Mateos María , Galán Sofía
Published: June 2018

Objetivo Identificar cuáles son las barreras que perciben los adolescentes para practicar actividad física en su tiempo libre.Método Se siguió una metodología cuantitativa de corte descriptivo. La muestra estuvo formada por 324 estudiantes (54,3 % chicas y 45,7 % chicos) de Educación Secundaria Obligatoria con una edad media de 14,01±1,35 años. Para la toma de los datos se utilizó la Escala Breve de Percepción para la Práctica de Actividad Física y Deportiva en adolescentes. Las variables analizadas son el autoconcepto o la autopercepción de las competencias motrices, la motivación o el interés, el apoyo social y la incompatibilidad de tareas. Se analiza cómo estas barreras varían en función del género y del curso.Resultados Existen relaciones estadísticamente significativas entre el auto concepto y la motivación en función del sexo. Asimismo, existen diferencias estadísticamente significativas en todas las variables excepto en la de la incompatibilidad de tareas en función del curso.Conclusiones Las chicas tienen peor auto concepto y motivación sobre la práctica de actividad físico-deportiva. Por otra parte, los alumnos de mayor edad (15-16 años) presentan un mayor auto concepto o autopercepción de las competencias motrices, motivación y apoyo social.
Salud sexual y reproductiva de adolescentes en Chile: el rol de la educación sexual
Authors: Obach King Alexandra , Sadler Michelle , Jofré Natalia
Published: June 2018

Objetivos Indagar sobre las percepciones de adolescentes en torno a la educación sexual en la Región Metropolitana de Chile y el rol de los sectores de salud y educación en esta materia.Métodos Estudio cualitativo etnográfico, cuyo trabajo de campo se llevó a cabo en cinco comunas de la Región Metropolitana de Chile, en cada una de las cuales se abordó unEspacio Amigable para atención adolescente. Se utilizaron las técnicas de entrevistassemi-estructuradas (N=38), grupos de discusión (N=5) y observación participante. Resultados Se identificó una percepción negativa por parte de adolescentes respecto a la educación sexual que reciben. Sostienen la necesidad de información en salud sexual y reproductiva que cubra en profundidad las dimensiones tanto biológicas como emocionales y afectivas de la sexualidad, superando enfoques conservadores y de riesgo en torno a la sexualidad. Se identificaron estrategias innovadoras en salud, centradas en las escuelas, donde los sectores de salud y educación trabajan de manera colaborativa en materia de educación sexual.Discusión Cuando los sectores de salud y educación trabajan de manera colaborativa y coordinada, se da una mejor respuesta a las necesidades de adolescentes en materia deinformación y educación sexual. Si bien este trabajo intersectorial constituye un avance, está pendiente el desafío de incorporar las voces de los adolescentes y sus comunidades, con el fin de planificar programas y políticas de educación sexual que se basen en sus experiencias vitales, avanzando con ello hacia los derechos sexuales y reproductivos de este grupo.
ON THE IMPACT OF SILICA AND BLACK CARBIDE IN IMPROVING THE ANTI-VIBRATION OF THE RUBBER BLENDS BASED ON NATURAL RUBBER (NR) AND STYRENE BUTADIENE RUBBER (SBR)
Authors: Tu Le Ngoc
Published: June 2018

This paper presents some results on the survey of the impact of silica and black carbide on the mechanical – physical properties and vibration resistance of the rubber blended on natural rubber (NR) and synthetic styrene butadiene rubber (SBR), for application in manufacturing diesel engine mounts. Based on this research, the article also introduces some results in building up anti-vibration rubber and the process of diesel engine mounts manufacture. Development of the method to test the vibration resistance of the diesel engine mounts has initially resulted in some good results such as the natural frequencies are lower than 20 Hz and the damping factor is higher than 10.
ELECTROCHEMICAL ACTIVITY OF PtM (M=Co, Cu, Ni) CATALYSTS SUPPORTED ON CARBON VULCAN FOR OXYGEN REDUCTION REACTION (ORR) IN FUEL CELLS
Authors: Hong Phuong Vu Thi
Published: June 2018

PEMFC - proton exchange membrane fuel cell is electrochemical devices producing electricity and heat from reaction between a fuel (often hydrogen) and oxygen. Therefore, energy production is generally clean and effective without burning the fuel like the tradition way in combustion engines. The obstacles encountered fuel cell commercialization are mainly due to expensive catalyst materials (Platinum) and long-term instability performance. For this reason, numerous investigations have been undertaken with the goal of developing low-cost, efficient electrocatalysts that can be used as alternatives to Pt. In this paper, a two-step procedure at room temperature was applied to prepare a bimetallic Pt-M(M = metal) supported carbon Vulcan. First, the chemical reduction of M metal ions by sodium borohydride in the presence of carbon powder is performed. Second, the partial galvanic replacement of M particle layers by Pt is achieved upon immersion in a chloroplatinate solution. The major size of synthesized metallic particles was around 2-3 nm. From the slope of Koutecky-Levich plot for ORR using PtM/C materials as catalysts it was found that the overall electron transfer number ranged from 3 to 4, leading to the suggestion of H2O2 formation as an intermediate of the ORR.
DERIVATION VIABILITY OF RESISTANT STARCH FROM SOME COMMON FRUIT SEEDS IN VIET NAM FOR INDUSTRIAL PRODUCTION
Authors: Ngoc Hoi Nguyen Thi
Published: June 2018

The study aimed to compare the ability of extracting resistant starch (RS) from three common fruit seeds in Vietnam, namely avocado, jackfruit and mango seed. Avocado (Persea Americana) seeds, jackfruit (Artocarpus heterophyllus) seeds and mango (Mangifera indica L.) seeds were collected from local markets in Ho Chi Minh City, processed and extracted of starch. Three starch granules were then analyzed for RS content according to AOAC Standard 2002.02. Simultaneously, the effects of temperature (100, 120 oC), time (10, 15, 20 minutes) and heating methods (drying, steaming) on RS content in three starch granules were also investigated to evaluate heat-stability of these RS. The content of RS (% dry matter) in avocado seeds, jackfruit seeds and mango seeds was 23.59 %, 27.06 % and 32.12 %, respectively. Heat-stability of avocado seed RS was the least, mean while heat-stability of mango seed RS and jackfruit seed RS were higher and similar. The RS content slightly decreases after 10 and 15 minutes of heating, but significantly decreases after 20 minutes of heating. Drying reduces the RS content of the materials more than steaming. The results suggest that jackfruit seed seems to be better than avocado and mango seeds in the content and heat-stability of RS. Further studies should be conducted to choose a potential seed type for building an RS extracting processing in industrial production.
RICE STRAW CELLULOSE AEROGELS
Authors: Son Nguyen Truong
Published: June 2018

In this study, cellulose was obtained from rice straw by dewaxing with Soxhlet extraction and treating with sodium hydroxide and hydrogen peroxide. The obtained cellulose was used to successfully fabricate cellulose aerogels with a binder by freeze drying technique. The materials were then functionalized with methyltrimethoxysilane (MTMS) to achieve hydrophobicity. The morphology, pore structure and other properties of the aerogels were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetrical analysis (TGA), thermal conductivity and water contact angle (WCA) measurements. The rice straw cellulose aerogels exhibited very low specific density (0.0412-0.0470 g/cm3), high porosity (> 96 %), superhydrophobicity (WCA > 137o) and low thermal conductivity (0.034-0.036 W/(m.K)). The aerogels showed good oil adsorption capacity of 15.66-16.09 g/g.
PREPARATION OF POLYAMIDE11/BAMBOO FLOUR POLYMER COMPOSITE USING POLYVINYL ALCOHOL AS COMPATIBILIZER
Authors: Huynh Mai Duc
Published: June 2018

In this work, the effects of bamboo flour (BF) and polyvinyl alcohol (PVA) contents on the tensile strength, impact strength, thermogravimetric analysis (TGA) and dynamic mechanical thermal analysis (DMTA) of polyamide 11/BF composites were studied in detail. The PVA was added into PA11/BF composites by two methods: (i) melt mixing with the other components in Haake mixer (one-step method); (ii) dispersing on the surface of BF in ethanol solution before mixing with PA11 in the melted state (two-step method). The investigation of mechanical properties showed the tensile strength of composites prepared by two-step method was higher than that of one-step method, while the trend for impact strength was opposite. On the other hand, DMTA analyses exhibited the enhacement of the compatibility of PA11/BF sample by observing the shift of peaks at the b relaxation around -80 oC due to the presence of PVA. This led to the increase of thermal stability of PA11/PVA/BF composites in comparison with PA11/BF composites.
Integration, spurious convergence, and financial fragility: a post-Keynesian interpretation of the Spanish crisis
Authors: CALDENTEY ESTEBAN PÉREZ , VERNENGO MATÍAS
Published: June 2018

ABSTRACT The Spanish crisis is generally portrayed as resulting from excessive spending by households associated to a housing bubble and/or an excessive welfare spending beyond the economic possibilities of the country. We put forward a different hypothesis. We argue that the Spanish crisis resulted, in the main, from a widening deficit position in the non-financial corporate sector and a declining trend in profitability under a regime of financial liberalization and loose and unregulated lending practices.
A Economia Criativa em época de crise: o desenvolvimento endógeno brasileiro na obra de Celso Furtado
Authors: PACHECO ADRIANO PEREIRA DE CASTRO , BENINI ELCIO GUSTAVO
Published: June 2018

RESUMO Na quase totalidade de sua obra o notável economista e ex-ministro da Cultura, Celso Furtado, exaltou a criatividade da nação brasileira como ativo estratégico para o surgimento de um novo modelo de desenvolvimento econômico, sustentável, inclusivo e endógeno. A trajetória analítica deste trabalho recorreu à revisão bibliográfica para destacar as contribuições teóricas de Celso Furtado acerca das potencialidades advindas de uma nova economia, intensiva em criatividade. Por sua vez, os recortes do pensamento furtadiano constituem um instrumento poderoso e atual para (re)pensar as estratégias de superação do subdesenvolvimento do país.
Mecanismos de coordenação em gestão de operações humanitárias: modelo conceitual de simulador e proposta de jogo de logística humanitária
Authors: Bertazzo Tábata Rejane , Leiras Adriana , Yoshizaki Hugo Tsugunobu Yoshida , Sauaia Antonio Carlos Aidar
Published: June 2018

Resumo A gestão da cadeia de suprimentos humanitária envolve que decisões sejam tomadas antes, durante e depois que um desastre acontece, e esta tomada de decisões trata-se de um dos grandes desafios que agentes humanitários devem encarar. O presente estudo desenvolve um modelo conceitual de simulador organizacional para análise de decisões logísticas e, a partir deste modelo conceitual, propõe um jogo logístico humanitário direcionado a permitir que gestores e estudantes de operações humanitárias observem e vivenciem a tomada de decisão nos contextos de desastres. Como metodologia, a pesquisa bibliográfica foi utilizada como base para desenvolvimento do modelo conceitual e para a proposta de jogo humanitário. O modelo conceitual e a proposta de jogo foram aplicados, para validação, a dois estudos de caso relacionados ao combate a fome. A viabilidade e uso do modelo conceitual e do jogo em treinamentos foram validados, assim como sua utilização no suporte a tomada de decisão em gerenciamento de operações humanitárias.
Impacto da certificação de produto na indústria brasileira de baterias automotivas: um estudo de caso
Authors: Giovanetti Juliano , Cleto Marcelo Gechele
Published: June 2018

Resumo A certificação de produto, quando compulsória, é a adoção, por um segmento industrial, de um conjunto de procedimentos exigidos por um órgão de regulação de um setor, que atesta que o produto, objeto da regulamentação, atende aos requisitos mínimos de qualidade. O objetivo desta pesquisa foi estudar o impacto da certificação de produto em uma indústria de médio porte, fabricante de baterias automotivas, cujo segmento foi recentemente submetido a certificação compulsória. Pretendeu-se estudar esses impactos na cadeia interna de valor da organização, bem como na sua interação com o seu ambiente competitivo, a partir de variáveis qualitativas retiradas de dois modelos encontrados na literatura para avaliação dos impactos da certificação. O método de pesquisa adotado foi o estudo de caso. Como contribuições do trabalho foram identificados impactos significativos na produtividade, nas estratégias mercadológicas, no relacionamento com a sua cadeia de suprimentos e nas exigências de qualificação da mão de obra, entre outros aspectos, da empresa pesquisada.
Influência dos Parâmetros de Soldagem em Tubos de Alumínio AA6063 pelo Processo CDFW
Authors: Braguine Tatiane Belluzzo , Alcântara Daniel Soares de , Castro Carlos Alberto Carvalho , Santos Gabriel Henrique Ribeiro dos
Published: June 2018

Resumo Neste trabalho realizou-se um estudo das interações entre as variáveis do processo de soldagem por atrito, conhecido como Continuous Drive Friction Welding (CDFW) em junção de tubos de alumínio AA6063, com diâmetro de 12,7 mm e espessura de 1,59 mm. Foi analisada a influência das variáveis: rotação, pressão de atrito e tempo de atrito nas dimensões finais da rebarba e comprimento da peça soldada. O número de experimentos realizados foi definido por planejamento fatorial completo (3k), onde cada variável de entrada recebeu três níveis. Os corpos de prova foram produzidos de acordo com as combinações de parâmetros e medidos para obter os valores finais do comprimento final e das dimensões da rebarba. Os dados foram analisados por um software de ferramentas estatísticas, utilizando gráfico de Pareto, análise das interações e variância. Observou-se que a variável de entrada que apresentou menor influência nos resultados foi a velocidade de rotação. Os melhores resultados ocorreram nos corpos de provas com menor diminuição no comprimento e rebarbas mais uniformes, foram obtidos com combinações do menor valor de pressão.
Influence of the Aluminium Alloy Type on Defects Formation in Friction Stir Lap Welding of Thin Sheets
Authors: Costa M. I. , Leitao C. , Rodrigues D. M.
Published: June 2018

Abstract The weldability in Friction Stir Lap Welding (FSLW) of heat and non-heat treatable aluminium alloys, the AA6082-T6 and the AA5754-H22 aluminium alloys, respectively, are compared. For both alloys, welds were produced in very thin sheets, using the same welding parameters and procedures, and strong differences in welds morphology were found. The strength of the welds was evaluated by performing tensile-shear tests under monotonic and cyclic loading conditions. As-welded and heat-treated samples of the AA6082- T6 were tested. It was found that the heat-treatable alloy is more sensitive to defects formation, in lap welding, than the non-heat-treatable alloy. The presence of defects has a strong influence on the monotonic and fatigue behaviour of the welds. In spite of this, for very high-applied stresses, the heat-treatable alloy welds perform better in fatigue than the non-heat-treatable alloy welds.
Fissuração pelo Hidrogênio em um Aço API 5L X70 Soldado com Eletrodos Celulósicos de Diferentes Níveis de Resistência
Authors: Mattioli Camila Goes , Modenesi Paulo José , Bracarense Alexandre Queiroz , Oliveira Matheus Pires
Published: June 2018

Resumo Aços classificados segundo a norma do American Petroleum Institute (API) enfrentam o problema de trincamento a frio decorrente da soldagem. Neste trabalho foi estudado, por meio do ensaio de implante, o efeito da resistência mecânica do metal de solda sobre a susceptibilidade de um aço API-5L-X70 ao trincamento pelo hidrogênio. As soldas foram realizadas com dispositivo de soldagem por gravidade, usando-se dois eletrodos celulósicos, AWS-E6010 e AWS-E8010. O hidrogênio difusível dos eletrodos foi determinado por cromatografia gasosa. Como resultado do ensaio de implante, observou-se uma tendência maior à fissuração quando foi utilizado o eletrodo AWS-E6010. Isso pode ser relacionado à menor resistência mecânica apresentada pela solda resultante do mesmo e ao fato de o eletrodo ser menos ligado. Assim, o metal de solda pode ter se transformado a temperaturas mais elevadas, o que levou a uma maior migração do hidrogênio para a ZTA. Observou-se, ainda, que mesmo as soldas que não falharam no ensaio apresentaram trincas. Isso pode ser devido às condições de resfriamento do cordão que levaram ao aparecimento ilhas com estruturas frágeis e susceptíveis ao trincamento. Para as menores cargas usadas (0,8.σe), contudo, estas trincas não atingiram um tamanho crítico para a ruptura final do pino sendo ensaiado.
MEASURING THE DISTANCE BETWEEN STERNOCLAVICULAR JOINT AND HILAR STRUCTURES WITH TOMOGRAPHY
Authors: SOLA JUNIOR WILSON CARLOS , COLFERAI TIAGO AUGUSTO , RAMOS CARLOS HENRIQUE , SANTOS PAULO SÉRGIO DOS , GERLACK JULIANO SANTINI , GOMES ANDRÉ FRANCISCO
Published: June 2018

ABSTRACT Objectives To evaluate the tomographic distance between the sternoclavicular joints and the nearest hilar structures. Methods Computed tomography images (axial and sagittal slices) in 120 healthy individuals (60 men and 60 women) between 18 and 60 years old were prospectively analyzed. The distances from both sternoclavicular joints to the respective brachiocephalic veins, trachea, esophagus, and lung apexes were measured and related to age, sex, and body mass index. Results Statistically significant differences were found in the distance from the right and left sternoclavicular joint distances and the corresponding brachiocephalic vein, esophagus, and lung apexes. In women, both sides were closer to the noble structures. In patients with body mass index <25, the distances were significantly less than in heavier patients. Conclusion The left sternoclavicular joint is closer to the hilar structures than the contralateral side. In women, both sternoclavicular joints are closer to the brachiocephalic veins, esophagus, and lung apexes than in men. Patients with body mass index <25 have shorter distances between these joints and the brachiocephalic veins and esophagus. Level of Evidence II; Prognostic studies – Investigating the effect of a patient characteristic on the outcome of disease.
EVALUATION AND COMPARISON OF OPEN AND CLOSED TIBIA SHAFT FRACTURES IN A QUATERNARY REFERENCE CENTER
Authors: SANTOS ALEX DE LIMA , NITTA CONRADO TAZIMA , BONI GUILHERME , SANCHEZ GUSTAVO TADEU , TAMAOKI MARCEL JUN SUGAWARA , REIS FERNANDO BALDY DOS
Published: June 2018

ABSTRACT Introduction Tibia shaft fractures are among the most common in orthopedic practice, but Brazilian literature remains limited on the subject. Objective To evaluate the characteristics of tibia shaft fractures and conduct a comparison between exposed and closed fractures of the tibia. Methods This comparative prospective study examined all tibia shaft fractures admitted to our services over a twelve-month period. The cases were evaluated according to age, trauma mechanism, sex, associated fractures, treatment, hospital stay, and readmission rate during the six months after discharge. Results Fifty-three cases met the inclusion criteria. The average age was 36 years (SD 14.3) and 83% were males (p<0.001). Traffic accidents were responsible for 73.6% of fractures (p<0.001). Exposed fractures were found in 52.8% of the cases (p=0.56). When initial treatment consisted of stabilization with external fixation, these cases were more likely to be rehospitalized (p=0.009). Cases of open fracture also had longer hospital stays (p<0.001) and a higher readmission rate (p=0.028). Conclusion Open fractures are associated with more severe trauma, expressed in longer hospital stays and high rates of readmission. Cases of fracture which were initially treated with external fixation had a higher readmission rate. Level of Evidence II; Prospective comparative study.
PERIPHERALLY INSERTED CENTRAL CATHETERS IN ORTHOPEDIC PATIENTS: EXPERIENCE FROM 1023 PROCEDURES
Authors: SANTOLIM THAIS QUEIROZ , BAPTISTA ANDRÉ MATHIAS , GIOVANI ARLETE MAZZINI MIRANDA , ZUMÁRRAGA JUAN PABLO , CAMARGO OLAVO PIRES DE
Published: June 2018

ABSTRACT Objectives The advantages of using a peripherally inserted central catheter (PICC) in hospitalized patients make this device very important for intravenous therapy. This study describes the use of PICCs at the Institute of Orthopedics and Traumatology at the Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo over the last 10 years. Methods This retrospective study analyzed 1,057 medical records and included 1,023 medical files with complete information on the punctured vein, diagnosis, duration of catheterization, complications, and catheter tip positioning. Results Seven hundred and twenty PICCs (70.4%) were considered successfully positioned, and mean duration of catheterization was 34.3 days. The basilic vein was used in 528 (51.6%) patients, while 157 (15.4%) catheters were removed due to complications. No cases of catheter-related thrombosis or infection were found. Eight hundred and sixty-six (84.6%) patients completed their treatment with PICC in place. Conclusion PICC is a safe intravenous device that can be successfully utilized for medium- and long-course intravenous therapy in hospitalized and discharged orthopedic patients. Level of Evidence IV; Case series.
Intelectuais à prova das barricadas: Félix Guattari e a subjetivação militante de 68
Authors: Ota Nilton Ken
Published: June 2018

Resumo O legado do pensamento francês dos anos de 1970 não se resume ao conjunto de problemas teóricos e à inventividade conceitual de seus principais representantes. Sua disposição crítica dependeu de intensa interlocução com o contexto político da época, ponto de certa forma negligenciado pelos especialistas, na maioria das vezes excessivamente focados em abordagens monográficas ou apreciações internas às obras de um determinado autor. Exemplo disso, a militância de Félix Guattari tem sido analisada, sobretudo, a partir do conteúdo propositivo extraído de sua teoria, em detrimento da compreensão da conjuntura social na qual ela encontrou seus limites e seus espaços de significação. Uma de suas iniciativas políticas mais marcantes, o Centre d'études, de recherches et de formation institutionnelles (CERFI), vem merecendo pouca atenção e interesse. Nenhum estudo sistemático sobre a organização foi registrado até este momento entre os pesquisadores brasileiros, situação não muito diferente da observada na França. Com apoio de pesquisa documental realizada no arquivo pessoal do autor, depositado no Institut mémoires de l’édition contemporaine (IMEC), este artigo apresenta e analisa a proposta guattariana de constituição de um processo de subjetivação militante calcada nos valores de 68, colocado em curso, com todos os impasses e contradições, por meio do CERFI.