Doña Berta; Cuervo.--Superchería.

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La regenta,

Mode of access: Internet.

Dimerlike positional correlation and resonant transmission of electromagnetic waves in aperiodic dielectric multilayers

In this paper, we investigate transmission of electromagnetic wave through aperiodic dielectric multilayers. A generic feature shown is that the mirror symmetry in the system can induce the resonant transmission, which originates from the positional correlations (for example, presence of dimers) in the system. Furthermore, the resonant transmission can be manipulated at a specific wavelength by tuning aperiodic structures with internal symmetry. The theoretical results are experimentally proved in the optical observation of aperiodic SiO2/TiO2 multilayers with internal symmetry. We expect that this feature may have potential applications in optoelectric devices such as the wavelength division multiplexing system.

COMMAD 04 proceedings

The following topics were dealt with: semiconductor growth (MBE, PECVD, MOCVD, MOVPE) and characterizations; high-electron mobility transistors (HEMTs); microcavity organic light emitting diode (MOLED); semiconductor superlattices; photodiode arrays; MEMS structures; lithography;semiconductor lasers; semiconductor optical amplifiers; surface treatment and annealing

HERDEIROS DE UMA TRADIÇÃO: UMA INVESTIGAÇÃO DOS FUNDAMENTOS TEOLÓGICO- IDEOLÓGICOS DO CONSERVADORISMO METODISTA NA CRISE DA DÉCADA DE SESSENTA

Este trabalho estuda uma crise vivida pela Igreja Metodista na segunda metade da década de sessenta. Influenciado pelo ambiente político da ditadura militar, o metodismo brasileiro foi campo de um embate entre as alas liberais e conservadoras da denominação. Palco deste embate foi a Faculdade de Teologia e o II Concílio Geral Extraordinário, em 1968, além de uma série de eventos que a ele se seguiram durante os anos de 1969 e 1970. A pesquisa problematiza os fundamentos teológicos e ideológicos que fundamentaram as atitudes das alas conservadoras do metodismo neste conflito, um aspecto pouco considerado pela historiografia sobre o tema. A principal suspeita é a de que as posturas conservadoras decorreram de uma tradição centenária, trazida pelos missionários norte-americanos, quando da implantação do Protestantismo no Brasil. Esta tradição transformou-se numa espécie de Ethos do protestantismo brasileiro, entre o final do século XIX e meados do XX. A postura dos conservadores configura-se, assim, numa reação ao Ethos ameaçado por novos atores do campo religioso e pelas demandas da sociedade em conflito.(AU)

La France dans le Pacifique Sud:les enjeux de la puissance

La France est présente dans le Pacifique Sud depuis le milieu du XIXème siècle, mais ce n’est qu’à partir des années 1970 que ses relations avec les États de la région ont connu de grands bouleversements. Le territoire ainsi que la stratégie nucléaire, facteurs de puissance pour la France, sont devenus les fondements de la contestation régionale, exprimée par l’opposition au développement des activités nucléaires en Polynésie française et par le soutien au mouvement indépendantiste kanak en Nouvelle-Calédonie. Cependant au-delà d’une apparente cohésion, cette contestation a révélé des enjeux régionaux divers voire diviseurs notamment parmi les jeunes États mélanésiens. Un rapprochement s’est pourtant opéré à partir de 1989 entre les États du Pacifique Sud et la France. Celle-ci a développé deux types d’actions, les unes relevant de politiques essentiellement nationales ou territoriales, les autres de politique extérieure, et toutes généralement conduites ou initiées par de fortes personnalités politiques. Les États du Pacifique Sud ont accueilli ces initiatives de façon d’autant plus positive que certains se sont retrouvés confrontés aux aléas de leur relativement récente indépendance. La présence française semble désormais devenue un atout pour le Pacifique Sud.

Niedrigfeld Magnetowiderstand inhomogener Halbleiterschichten

The resistance of semiconductor superlattices under weak magnetic fields is modelled with a classical approach. It is shown, that this is sufficient to explain the experimental features of these systems and that a quantum-mechanical approach will only be needed for significantly smaller lattice structures.

Computer program for the analysis of non-prismatic beams

One of the major problems in the analysis of beams with Moment of Inertia varying along their length, is to find the Fixed End Moments, Stiffness, and Carry-Over Factors. In order to determine Fixed End Moments, it is necessary to consider the non-prismatic member as integrated by a large number of small sections with constant Moment of Inertia, and to find the M/EI values for each individual section. This process takes a lot of time from Designers and Structural Engineers. The object of this thesis is to design a computer program to simplify this repetitive process, obtaining rapidly and effectively the Final Moments and Shears in continuous non-prismatic Beams. For this purpose the Column Analogy and the Moment Distribution Methods of Professor Hardy Cross have been utilized as the principles toward the methodical computer solutions. The program has been specifically designed to analyze continuous beams of a maximum of four spans of any length, integrated by symmetrical members with rectangular cross sections and with rectilinear variation of the Moment of Inertia. Any load or combination of uniform and concentrated loads must be considered. Finally sample problems will be solved with the new Computer Program and with traditional systems, to determine the accuracy and applicability of the Program.

Radiocarbon dates of peatland initiation across the northern high latitudes

A compilation of basal dates of peatland initiation across the northern high latitudes, associated metadata including location, age, raw and calibrated radiocarbon ages, and associated references. Includes previously published datasets from sources below as well as 365 new data points.

A intercompreensão em Línguas Românicas nas aulas de Espanhol: o que querem e o que podem essas línguas?

The official documents that guide the teaching and learning process of a Foreign Language in Brazil, Parâmetros Curriculares Nacionais de Língua Estrangeira, suggest a linguistic and intercultural communication as the main objective of teaching a foreign language inorderto contribute withareflexive formation of the students.Toachieve this goal, a Virtual Interchange was realized connecting distant places like Córdoba, in Argentina, and Natal in Brazil, between High School students through Moodle platform and Facebook. The Interchange is based in the Intercomprehension in Romance Languages(IC) guidelines, inthiscase between Portuguese and Spanish, according to which every student speaks their own language and makes an effort to comprehend the others througha collaborative process thatgo es beyond the limits of mere linguistic objectives and favors the students’ reality acceptance before the diversity. This qualitative study with thno graphic characteristic stries to know whe ther differentiate projects can increase students’ interest to learn the target language. It was also set as an aim of this study to develop the intercultural competence of our students and foster the respect for different cultures. In the case of Argentinian and Brazilian students, wetried to promote reflection about social representation trying to destroy stereotypes between both groups. As methodological resources, we used interviews, questionnaires and intercomprehension activities during the Project, as well as a participant observation of the interactions betweenthe students of both countries.Webe lieve tobe contributing towards the integral formation ofth student asacriticalcitizenthatthinksa bouttheir posture before the world, which is one of the formal education aims according to Parâmetros Curriculares Nacionais. Our theoretical foundation is based on Intercomprehension in Romance Languages (IC) as a plurilingualism didactics, (JAMET AND SPIŢĂ 2010; ARAÚJO AND SÁ et al., 2003; CAPUCHO, 2010; ANDRADE etal.,2003), some the oriesaboutinter culturalisman didentity(Vallespir, 1999;DUARTE&SANCHES,2004; REVUZ,1998;SILVA,2000;CHAUÍ2006; SERRANI-INFANTE 1998), motivation and second language learning (DECI & RYAN, 1985; DÖRNYEI AND OTTÓ, 1998; DÖRNYEI, 2000, 2001; 2011) and Significant Learning Theory (AUSUBEL, 1968). The results show an increase of students’ motivation when in contact with the target language through dynamic activities in an IC context. Moreover, we noticed that a deeper thinking aboutthe Argentinian culture helped to deconstruct previous cultural representation.

Intercompreensão de línguas românicas: uma proposta para a leitura literária plurilíngue no ensino fundamental

The developed research aimed to investigate how students behave on elementary school in a plurilingual context, based on Intercomprehension of Romanic Languages with literary texts in the classroom. The theoretical framework prioritizes authors who consider reading literary text as an essential tool to the formation of reading and writing skills for students, such as: Amarilha (1997; 2003; 2007), Resende (1993), Kleiman, (1999), Villardi (1997), Aguiar (1991), Perrone-Moisés (2000), Lajolo (1993), Zilberman (1991), Cosson (2006), Andrade, Melo-Pfeifer, Santos, (2009), Sá; De Carlo; Antoine (2011), Alas Martins (2014), Doyé (2005), Souza, (2013), and others, according to the intercomprehension approach and plurilingualism. We use questionnaires as a methodological resources for this research, and we applied some activities that was developed based on intercomprehension from literary texts which represent three types of Romanic languages (Spanish, French and Italian), in addition to the participant observation in classes with students of the 8th grade from an elementary public school in the city of Natal (RN). The students could read and (inter) understand some texts of classic literature in those Latin languages and also in Portuguese, whose titles include “D. Quixote de la mancha” by Miguel de Cervantes; “O pequeno príncipe” by Antoine de Saint-Exupéry; and “Pinóquio” by Carlo Collodi. The data analysis shows that students understood the lessons with plurilingual texts as something which goes beyond the structure of language teaching, awakening themselves to the knowledge of new languages and cultures, and linguistic diversity as motivation at the time of understanding and literature as transforming element to Citizen formation of students.

A produção oral de inglês como LE em uma escola pública de Natal: uma experiência com a abordagem baseada em tarefas

The aim of this action research of mixed-methods was investigating the role of the tasks proposed by the Task-Based Learning, TBL (WILLIS, 1996) in the process of development of speech production in English as a foreign language (EFL) at the public school. Twenty-three students from a grade of secondary school from a state school in Rio Grande do Norte were exposed systematically to the implementation of the learning tasks focused in the speech production in EFL during two months. The instruments used at the data collection – pre and post-questionnaire; field notes; focal group; and pre and post-tests - generated two kinds of data: a) qualitative (the perception of the students about their speech production and the teaching of this ability at the public school; and, the usage of strategies of communication for these learners facing TBL); and, b) quantitative (the development of pronunciation; of accuracy in the proficiency tests (test KET – Cambridge, adapted); and, of Global Oral Proficiency (POG) of these learners after the accomplishment of the learning tasks). The quantitative results of the study indicate that there was a statistically significant development of pronunciation and accuracy at the proficiency tests, after the tasks experience. The qualitative findings, in turn, represented by the learners‟ reports and from the research teacher, show that there has been greater focus on the use of communicative strategies during the learners‟ oral production throughout the intervention with the tasks.

Monitorización de los principales patógenos de las abejas para la detección de alertas y riesgos sanitarios

Las abejas, principalmente la especie Apis mellifera, desarrollan una función biológica muy importante puesto que se encargan de polinizar diversos cultivos agrícolas y la flora silvestre de todo el mundo. No obstante, existen numerosos factores que influyen en el estado sanitario de las colonias de abejas y presentan además un alto grado de interacciones entre ellos. Algunos de los potenciales riesgos para la apicultura española ya han sido identificados, como por ejemplo las dos especies de microsporidios, Nosema apis y N. ceranae, que actúan como parásitos intracelulares obligados o los ectoparásitos Varroa destructor, Acarapis woodi o Braula coeca; así como numerosos virus capaces de infectar a Apis melífera, de los cuales los principales son el virus de las alas deformadas (DWV), el virus de las realeras negras (BQCV), el virus Kashmir (KBV), el virus de la parálisis aguda (ABPV) y su variante israelí (IAPV). Otras enfermedades que afectan fundamentalmente a la cría de abejas son la loque americana y la loque europea, ambas de origen bacteriano (Paenibacillus larvae y Melissococcus plutonius respectivamente), así como la ascosferosis causada por el hongo Ascosphaera apis. Otro riesgo potencial para las abejas es la posible entrada de agentes exóticos como el coleóptero Aethina tumida o el ácaro Tropilaelaps clareae cuya presencia en Europa debe ser declarada según la OIE (2015). Recientemente se ha incluido a los neogregarinos y tripanosomátidos como posibles agentes patógenos. Actualmente, N. ceranae junto con V. destructor son los principales agentes patógenos que producen problemas sanitarios de las colonias de abejas en Europa. Además, se considera que los patógenos podrían jugar un papel primordial en el incremento de mortalidad de las abejas detectado en distintos países durante los últimos años...

Origem do plexo lombossacral e seus nervos em quatis (Nasua nasua, LINNAEUS, 1766)

The objective of this research is to study the origin of the lumbosacral plexus and its nerves in coatis (Nasua nasua). Six adult specimens, three males and three females, were used in this research. The animals were donated by IBAMA / GO or were collected when found dead by the edges of highways in Southeast Goiás. The specimens were fixed in aqueous 10% formaldehyde solution and preserved in the same solution. The observations reveal that the lumbosacral plexus of the coati has a structure with few intercommunications between its components. There are no typical handle formations, but the roots or its branches converge to form the nerves that are driven to the pelvic limb. The components of the Lumbosacral Plexus are ventral branches of L4 to S3. The Lumbosacral plexus generates several short nerves destined to pelvic structures and, at the same time, three long nerves: femoral, obturator and sciatic, all destined to the hind limb.

Interdigitating organic bilayers direct the short interlayer spacing in hybrid organic–inorganic layered vanadium oxide nanostructures

Layered metal oxides provide a single-step route to sheathed superlattices of atomic layers of a variety of inorganic materials, where the interlayer spacing and overall layered structure forms the most critical feature in the nanomaterials’ growth and application in electronics, health, and energy storage. We use a combination of computer simulations and experiments to describe the atomic-scale structure, dynamics and energetics of alkanethiol-intercalated layered vanadium oxide-based nanostructures. Molecular dynamics (MD) simulations identify the unusual substrate-constrained packing of the alkanethiol surfactant chains along each V2O5 (010) face that combines with extensive interdigitation between chains on opposing faces to maximize three-dimensional packing in the interlayer regions. The findings are supported by high resolution electron microscopy analyses of synthesized alkanethiol-intercalated vanadium oxide nanostructures, and the preference for this new interdigitated model is clarified using a large set of MD simulations. This dependency stresses the importance of organic–inorganic interactions in layered material systems, the control of which is central to technological applications of flexible hybrid nanomaterials.