bluuebunny/crossref_metadata_2025 huggingface dataset:
Deposition of exchange-coupled dinickel complexes on gold substrates utilizing ambidentate mercapto-carboxylato ligands
Authors: Börner Martin , Blömer Laura , Kischel Marcus , Richter Peter , Salvan Georgeta , Zahn Dietrich R T , Siles Pablo F , Fuentes Maria E N , Bufon Carlos C B , Grimm Daniel , Schmidt Oliver G , Breite Daniel , Abel Bernd , Kersting Berthold
Published: July 2017

The chemisorption of magnetically bistable transition metal complexes on planar surfaces has recently attracted increased scientific interest due to its potential application in various fields, including molecular spintronics. In this work, the synthesis of mixed-ligand complexes of the type [NiII2L(L’)](ClO4), where L represents a 24-membered macrocyclic hexaazadithiophenolate ligand and L’ is a ω-mercapto-carboxylato ligand (L’ = HS(CH2)5CO2− (6), HS(CH2)10CO2− (7), or HS(C6H4)2CO2− (8)), and their ability to adsorb on gold surfaces is reported. Besides elemental analysis, IR spectroscopy, electrospray ionization mass spectrometry (ESIMS), UV–vis spectroscopy, and X-ray crystallography (for 6 and 7), the compounds were also studied by temperature-dependent magnetic susceptibility measurements (for 7 and 8) and (broken symmetry) density functional theory (DFT) calculations. An S = 2 ground state is demonstrated by temperature-dependent susceptibility and magnetization measurements, achieved by ferromagnetic coupling between the spins of the Ni(II) ions in 7 (J = +22.3 cm−1) and 8 (J = +20.8 cm−1; H = −2JS1S2). The reactivity of complexes 6–8 is reminiscent of that of pure thiolato ligands, which readily chemisorb on Au surfaces as verified by contact angle, atomic force microscopy (AFM) and spectroscopic ellipsometry measurements. The large [Ni2L] tail groups, however, prevent the packing and self-assembly of the hydrocarbon chains. The smaller film thickness of 7 is attributed to the specific coordination mode of the coligand. Results of preliminary transport measurements utilizing rolled-up devices are also reported.
Equilibrium Points in the Restricted Full Three Body Problem with Ellipsoidal Primaries
Authors: Xin Xiaosheng , Hou Xiyun
Published: July 2017

Equilibrium points in the Restricted Full Three Body Problem with ellipsoidal primaries are investigated. The approach adopted by some in the literature that approximates the primaries by means of the spherical harmonic potential is demonstrated to be problematic when identifying equilibrium points in close vicinity of the primaries. Additional equilibrium points aside from the five well-known ones analogous to those in the Restricted Three Body Problem prove to be practically non-existent in general due to the intrinsic divergence of the spherical harmonic potential inside the Brillouin surface for irregular primaries. Accurate modeling of the primaries with the ellipsoid potentials is instead carried out. Locations and stability properties of the triangular equilibrium points in the double-ellipsoid systems of varying parameters are systematically studied and are compared with results obtained for the sphere–ellipsoid systems.
Spectroscopy and Photometry of Multiple Populations along the Asymptotic Giant Branch of NGC 2808 and NGC 6121 (M4)*
Authors: Marino A. F. , Milone A. P. , Yong D. , Da Costa G. , Asplund M. , Bedin L. R. , Jerjen H. , Nardiello D. , Piotto G. , Renzini A. , Shetrone M.
Published: July 2017

We present a photometric and spectroscopic study of multiple populations along the asymptotic giant branch (AGB) of the intermediate-metallicity globular clusters (GCs) NGC 2808 and NGC 6121 (M4). Chemical abundances of O, Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Fe, Co, Ni, Zn, Y, and Ce in AGB stars from high-resolution FLAMES+UVES@VLT spectra are reported for both clusters. Our spectroscopic results have been combined with multiwavelength photometry from the Hubble Space Telescope UV survey of Galactic GCs and ground-based photometry, as well as proper motions derived by combining stellar positions from ground-based images and Gaia DR1. Our analysis reveals that the AGBs of both clusters host multiple populations with different chemical compositions. In M4, we have identified two main populations of stars with different Na/O content lying on distinct AGBs in the

versus

and the V versus

pseudo-color–magnitude diagrams. In the more massive and complex GC NGC 2808, three groups of stars with different chemical abundances occupy different locations on the so-called “chromosome map” photometric diagram constructed for AGB stars. The spectroscopic + photometric comparison of stellar populations along the AGB and the red giants of this GC suggests that the AGB hosts stellar populations with a range in helium abundances from primordial to high contents of

. By contrast, from our data set, there is no evidence for stars with extreme helium abundance (

) on the AGB, suggesting that the most He-rich stars of NGC 2808 do not reach this phase.
New Evidence that Magnetoconvection Drives Solar–Stellar Coronal Heating
Authors: Tiwari Sanjiv K. , Thalmann Julia K. , Panesar Navdeep K. , Moore Ronald L. , Winebarger Amy R.
Published: July 2017

How magnetic energy is injected and released in the solar corona, keeping it heated to several million degrees, remains elusive. Coronal heating generally increases with increasing magnetic field strength. From a comparison of a nonlinear force-free model of the three-dimensional active region coronal field to observed extreme-ultraviolet loops, we find that (1) umbra-to-umbra coronal loops, despite being rooted in the strongest magnetic flux, are invisible, and (2) the brightest loops have one foot in an umbra or penumbra and the other foot in another sunspot’s penumbra or in unipolar or mixed-polarity plage. The invisibility of umbra-to-umbra loops is new evidence that magnetoconvection drives solar-stellar coronal heating: evidently, the strong umbral field at both ends quenches the magnetoconvection and hence the heating. Broadly, our results indicate that depending on the field strength in both feet, the photospheric feet of a coronal loop on any convective star can either engender or quench coronal heating in the loop’s body.
University students and informational social networks: Total sceptics, dual moderates or pro-digitals
Authors: Gavilan Diana , Martinez-Navarro Gema , Fernández-Lores Susana
Published: July 2017

The goal of the present work is to analyze the use of social networks as a tool for social empowerment by Spanish university students, and their perception of the university as an institution that contributes to the formation of a critical and active citizenship, that provides them with the relevant digital competences. The literature review shows possible discrepancies regarding the effect of new forms of digital communication in empowering young people, specially university students, as well as the existence of issues related to clarify this digital stage. Following, a typological analysis of the perception of university students regarding social information networks, social empowerment and the role of the university is presented. Using the data collected through a structured questionnaire of a sample of 236 students of social science degrees, an analysis of typologies is performed with the algorithm K Medias. Three clusters significantly different –labeled as «total sceptics», «dual moderates» and «pro-digitals»– are identified. Its prevalence and its characterization are explained: belief and behaviour profiles related to these beliefs. The paper concludes with several recommendations for future research regarding the perception of the students about the use of social networks as a tool for social transformation and the role of the university in this area.

El objetivo del presente trabajo es analizar el uso de las redes sociales informativas como herramienta de empoderamiento social por los universitarios españoles, y su percepción de la universidad como institución que contribuye a la formación de una ciudadanía crítica y activa, al tiempo que les proporciona las pertinentes competencias digitales. La revisión bibliográfica evidencia posibles discrepancias respecto al efecto que tienen las nuevas formas de comunicación digital en el empoderamiento de los jóvenes y en particular de los universitarios, así como la existencia de numerosas cuestiones por aclarar en este escenario digital. A continuación se presenta un análisis tipológico de la percepción de los estudiantes universitarios respecto a las redes sociales informativas, empoderamiento social y el papel de la universidad. A partir de los datos recogidos mediante un cuestionario estructurado de una muestra de 236 estudiantes de Grados de Ciencias Sociales, se realiza un análisis de tipologías con el algoritmo K Medias. Se identifican tres tipos –etiquetados como «escépticos totales», «moderados duales» y «pro-digitales»– significativamente diferentes. Se explica su prevalencia, y su caracterización: perfiles de creencias y conducta relacionadas con dichas creencias. El trabajo concluye con diversas recomendaciones para futuras investigaciones en cuanto a la percepción del universitario sobre el uso de las redes sociales como herramienta de transformación social y el papel de la universidad.
L’impact du co-développement sur l’ouverture individuelle aux changements : le cas Covéa
Authors: Giraud Laurent , Frimousse Soufyane , Guillard Alexandre , Lévêque Bernard , Peretti Jean-Marie , Santoni Pierre-Paul
Published: July 2017

L’objectif de la présente recherche est de saisir la nature de l’impact du co-développement sur l’ouverture individuelle aux changements à travers le prisme de la satisfaction des trois besoins fondamentaux et de la motivation autonome. Un modèle d’équations structurelles permet de tester des hypothèses de recherche sur un échantillon de 63 salariés de l’entreprise Covéa. Nos données suggèrent que les salariés travaillant avec des managers formés au co-développement ont une meilleure ouverture aux changements. Dans les relations identifiées, la motivation autonome du salarié occupe notamment un rôle de variable médiatrice.
L’employé entre responsabilité individuelle et responsabilité organisationnelle : le cas d’un projet de promotion de la santé en milieu de travail
Authors: Jolivet Alexia , Vásquez Consuelo
Published: July 2017

Notre article s’appuie sur l’étude d’un projet de promotion de la santé en milieu de travail. Nous faisons l’hypothèse que la mise en place de ce projet s’apparente à une forme de réactualisation organisationnelle du souci de soi cher à Foucault. Il s’agit de saisir l’originalité de la dynamique communicationnelle instituée par l’équipe projet, qui repose sur un jeu d’injonctions à une responsabilisation double – individuelle et collective – à destination des employés, en liant projet anthropologique et projet organisationnel. Cette ambivalence offre à ces derniers la possibilité de réordonner le projet amorcé par l’organisation et de nuancer les changements individuels encouragés par l’équipe projet.
Butler: ¿Método para una ontología política?
Authors: Femenías María Luisa , Casale Rolando
Published: July 2017

Este artículo tiene como objetivo mostrar que la obra de Judith Butler ofrece un conjunto de estrategias de lectura que no se reducen a principios o leyes. Por el contrario, son contingentes sin ser azarosas o arbitrarias. Los resultados de esta estrategia, que consideramos metodológica, se conforman gracias a una práctica de lectura que constituye un ejercicio crítico constante. Esta práctica adopta diversas estrategias que se condensan a partir de los aportes de diversos filósofos (entre otros Nietzsche, de Man, Foucault). Butler convierte entonces esa estrategia de lectura en un acto político, enraizado en una ética que le permite hacer visibles a quienes están en situación de máxima vulnerabilidad, insinuando, al mismo tiempo, caminos para transformar la sociedad y ampliar los espacios de libertad.
Las trayectorias del concepto de vida en el pensamiento de Judith Butler
Authors: Zaharijević Adriana , Milutinović Bojanić Sanja
Published: July 2017

En este ensayo, nos proponemos explorar los diferentes significados de los conceptos de vivibilidad y vida en el pensamiento de Judith butler. si bien es crucial para su obra temprana —butler se refiere por primera vez a este concepto en su introducción del libro, El género en disputa de 1999—, el concepto en sí emerge con más claridad y elaboración en su obra tardía (Deshacer el género, Vida precaria y Apuntes hacia una teoría performativa de asamblea). nuestra pregunta principal sería: ¿cuál es el hilo conductor que une las diferentes concepciones de vida en el trabajo de butler? ¿cuáles son los lazos entre la vida abyecta, invivible, precaria, indolora, desechada y desposeída? De estas dos preguntas surgen otras más: como la cuestión de gradación de vivibilidad — qué vida importa, y “cuánto,” y cómo pensar este tipo de cuantificación de algo no-cuantificable—; y la cuestión de la universalidad (todas las vidas importan). estas preguntas, obviamente, tienen que contar con evidencias bajo las cuales la vida es cualificada, calificada y contada como vivible. estas condiciones abarcan las normas que organizan las posibilidades de reconocimiento y los órdenes de reconocimiento tanto como la distribución diferencial de la humanidad. Y además engloban las maneras en las que estamos constituidos políticamente, pero también, las maneras en las que el “nosotros” se define como social y corporal. La cuestión de la vida vivible está, por ende, enmarañada con la problemática de la contraposición entre la voluntad individual y la idea del “nosotros”, que, como seres, necesitamos —en palabras de la propia butler— “para mantener y reproducir las condiciones de (nuestra) propia vivibilidad” (Deshacer el género 2004: 39).
Marcos de deseo y violencia: el árabe como Otro en J. Butler y J. Massad
Authors: De Eugenio Pérez Guillermo
Published: July 2017

El presente artículo propone una aportación al debate suscitado en torno al problema que plantean la violencia y la sexualidad (particularmente la homosexualidad) en la representación del otro, en este caso del árabe como Otro, partiendo en primer lugar de las consideración que hace Judith Butler sobre la noción de marco teórico y sus implicaciones políticas, éticas y estéticas. En un segundo momento confrontaremos este enfoque con las críticas planteadas por J. Massad al presunto orientalismo y etnocentrismo de ciertas corrientes reivindicativas de los derechos LGTB desde el punto de la especificidad cultural del mundo árabe y analizaremos la polémica suscitada por dichas críticas entre distintos interlocutores.
El contradiscurso de la memoria en Los pichiciegos de Rodolfo Fogwill
Authors: Tennenini Roberta
Published: July 2017

El 2 de abril de 1982, con vistas a desviar la atención de los ciudadanos del terrorismo de Estado y de la difícil situación económica, la tercera junta militar del autodenominado Proceso de Reorganización Nacional (1976-83) emprende la desafortunada guerra de las Malvinas. El acontecimiento histórico y militar viene acompañado de un minucioso manejo de la información nacional a la que se impone la construcción de un discurso triunfalista y alabador. Según cuenta en el prefacio que abre Los pichiciegos, Rodolfo Fogwill decidió escribir una novela sobre dicha guerra en el momento en que se dio cuenta de que su familia había sido contagiada por el “veneno mediático” de la propaganda dictatorial. A la luz de una reflexión sobre memoria (Ricoeur, Sarlo), poder biopolítico (Foucault, Agamben) y esteticismo político (Benjamin), este estudio analiza Los pichiciegos con el fin de indagar la relación fértil que se teje entre testimonio y ficción. El análisis permitirá poner de manifiesto cómo en la novela de Fogwill la reconstrucción ficcional del testimonio y del tiempo presente coincide con una interrogación sobre la construcción discursiva de la Historia.
Memoria y literatura : habla la sordomuda en la poesía de Jorge Boccanera, Néstor Ponce y Enrique Lihn
Authors: Pino Mirian
Published: July 2017

El propósito de esta presentación es el resultado de un primer acercamiento sobre la poesía escrita en situación extraterritorial, en el exilio. En este sentido, infiero que la lengua poética de Boccanera, Ponce y Lihn trabaja al límite la experiencia del terror de Estado en el Cono Sur. Asimismo, me centro en un abordaje que considera la metáfora viva o performática para observar cómo ésta transporta los tiempos pasado-presente al vertedero de la memoria.
#30ContraTodas : a repercussão de um caso de violência de gênero na luta feminista
Authors: Machado Liliane , Barbosa Paula Évelyn Silveira
Published: July 2017

#30ContraTodas is a campaign that emerged on social networks, following a case of gang rape in Rio de Janeiro. The crime against the 16-year-old victim has generated strong repercussions on social networks. In the week of the event, about one million tweets marked with #30ContraTodas were counted. In this article, we analyze the contribution of messages published on Twitter for Feminist Studies and for the fight against rape culture, especially in Brazil, which has high rates of violence against women. The study is conducted under the methodologies of discourse analysis and structural network analysis.
Les spécificités du féminisme lesbien décolonial caribéen au prisme de la littérature : les cas de Yolanda Arroyo Pizarro et Rita Indiana Hernández
Authors: Large Sophie
Published: July 2017

Cet article vise à situer le féminisme lesbien décolonial aux Caraïbes par rapport aux théories féministes développées aux États-Unis et en Europe, afin d’en déterminer les spécificités. A partir de l’analyse de la littérature féministe de fiction produite dans les Caraïbes au cours des deux dernières décennies, il s’attache à montrer les limites de certains concepts occidentalocentrés appliqués à la sphère caribéenne et à dessiner les contours des stratégies revendiquées par les activistes en contexte néocolonial et néolibéral.
Las especificidades del feminismo lésbico decolonial caribeño bajo el prisma de la literatura : los casos de Yolanda Arroyo Pizarro y Rita Indiana Hernández
Authors: Large Sophie
Published: July 2017

Este artículo procura situar el feminismo lésbico decolonial del Caribe con respecto a las teorías feministas desarrolladas en Estados Unidos y Europa, con el objetivo de determinar sus especificidades. A partir del análisis de la literatura feminista de ficción producida en el Caribe en las pasadas dos décadas, trata de evidenciar los límites de algunos conceptos occidentalocentrados empleados en la esfera caribeña así como dibujar los contornos de las estrategias reivindicadas por lxs activistas en contexto neocolonial y neoliberal.
Processos de Empoderamento e Práticas de Sustentabilidade e Autogestão entre Professoras Pataxó no Território Kaí-Pequi
Authors: Tássio Borges da Silva Paulo de
Published: July 2017

A proposta está situada em trabalhos de pesquisa com mulheres Pataxó do Território Indígena Kaí-Pequi, localizado no Extremo Sul da Bahia, particularmente na Vila de Cumuruxatiba, Município do Prado, Bahia. O trabalho busca evidenciar os diálogos tecidos com professoras Pataxó da Escola Estadual Indígena Kijetxawê Zabelê, tendo como objetivo refletir seus processos de empoderamento, práticas de sustentabilidade e autogestão. A reflexão propõe ir além da escola, na busca de perceber como as professoras Pataxó agenciam nos diferentes espaços em que estão inseridas. As experiências se apoiam em etnografias com o acompanhamento de diversas reuniões e assembléias nas comunidades, oficinas de gênero com mulheres Pataxó, assessoramento e regularização de associações e projetos específicos com mulheres, bem como oficinas de mãgute (culinária tradicional Pataxó) e etnomedicina Pataxó, oficinas de corte e costura, jornadas pedagógicas, oficinas de cipó, entre outros espaços de sociabilidade protagonizados pelas mulheres Pataxó. Professoras Pataxó, Empoderamento, Autogestão, Sustentabilidade.
Entretien avec Maria Luisa Femenías : « Por un feminismo mestizo »
Authors: Soriano Michèle
Published: July 2017

Cet entretien se propose de mettre en évidence la valeur exceptionnelle du parcours féministe et de la pensée de Maria Luisa Femenías. À travers l'évocation de son expérience personnelle et de ses publications il s'agira d'analyser l'institutionnalisation des études de genre en Argentine, la circulation des études de genre et des études féministes latino-américaines, les mouvements féministes latino-américains, ainsi que les circulations Nord-Sud des concepts et des cadres théoriques, entre les années 1990 et la période actuelle.
Ethical perceptions of employees in small retailing firms: A case of indigenous-owned fast-food outlets in Zimbabwe
Authors: Rambe Patient , Ndofirepi Takawira M.
Published: July 2017

Background: Although the subject of ethical business practices has a well-established tradition in large corporations where shareholder value maximisation is largely dependent on such entities’ conduct of good business ethics, its investigation in small businesses in agile, economically depressed economies such as that of Zimbabwe has targeted business owners and managers but excluded their employees. Given the middleman role that employees of emerging indigenous-owned retail firms play in the distribution chain from manufacturers to the consumers, the ethical perceptions of these employees are critical to the leveraging of businesses’ strategic orientations. Employees are the coal face of the firm, withering intense competition from these firms’ rivals and achieving the firms’ strategic orientations (profitability, market share, business growth and survival). In order to meet stakeholder expectations simultaneously largely depends on the ethical conduct of such employees.Aim: The overall aim of this study is to contribute to ethical theory and literature by demonstrating how employees’ ethical perceptions and behaviour shape the strategic orientations of the business. To achieve this aim, the study sought to: (1) establish the typical ethical dilemmas that employees of these retail firms faced in their daily tasks, (2) assess how they responded to these ethical challenges, (3) ascertain whether demographic factors such as age, level of education, gender and their position in the organisational hierarchy influence their reaction to ethical dilemmas; and (4) determine these employees’ overall perceptions of ethical issues within their organisations.Setting: The study was conducted on employees of an indigenous-owned fast-food firm operating in two cities in Zimbabwe.Methods: A survey was conducted on 108 employees working in two cities. A structured questionnaire was developed and administered to the employees.Results: The results suggested that a majority of the respondents were ethically conscious and could make ethical choices. In addition, most respondents deemed the ethical scenarios presented to them as morally wrong, suggesting that the surveyed employees wished to engage in ethical behaviour. However, while the respondents were deemed to be ethically astute in their individual capacities, they seemed to lack an in-depth knowledge of the ethical policies of their organisation.Conclusion: The study concludes that owners and managers of small firms should provide interventions to cascade ethical policy to the lower ranks of the organisation to enhance the ethical perception amongst employees of these firms. The study implication is that an institutional top-down approach is critical to embedding ethical sensitivity into employees without which employees may continue to speculate about the business ethics of their organisation.
The effect of an alternative notation on the comprehension of mathematical concepts among Grade 12 learners
Authors: Du Plessis Susanna H. , Pieterse Vreda
Published: July 2017

No abstract available.
The development of a Cu(I)/Bis(pyridyl)-N-alkylamine catalyst system for selective alcohol oxidation
Authors: Marais Lindie , Burés Jordi , Jordaan Johan H.L. , Mapolie Selwyn , Swarts Andrew J.
Published: July 2017

No abstract available.
Dissolution of nuclear conversion plant waste
Authors: Potgieter Marcelle , Barry John C. , Van der Westhuizen Derik J. , Krieg Henning M.
Published: July 2017

No abstract available.
A continuous flow synthesis of the anti-inflammatory COX-II inhibitor Celecoxib
Authors: Scholtz Chantal , Riley Darren L.
Published: July 2017

No abstract available.
A spatial-analytical investigation of the rainfall and temperature patterns over Southern Africa
Authors: Van der Walt Adriaan J. , Barker Charles H.
Published: July 2017

No abstract available.
Conservation volunteer tourism in the Hartbeespoort area
Authors: Van Tonder Su-Marie , Block Elizabeth
Published: July 2017

No abstract available.
Análisis de los factores de comunicación que inciden en la fidelización de los públicos universitarios
Authors: Duque Rengel Vanessa Karina , Abendaño Ramírez Mónica Elisabeth , Velásquez Benavides Andrea Victoria
Published: July 2017

Para las organizaciones de cualquier índole, el contar con una cartera de clientes fidelizados se ha cristalizado en el sustento social, económico y de marca, que le permite sostenerse en el contexto cambiante e inestable al que se enfrentan las empresas actualmente. En este escenario nace la presente investigación que es parte de un proceso de mejora continua, cuyo objetivo fue establecer pautas reales para fidelizar a los públicos heterogéneos de las modalidades de estudios a distancia en el Ecuador, a través del planteamiento de estrategias ligadas al mejoramiento del servicio y canales de comunicación, que permitan fortalecer el sentido de pertenencia de los estudiantes universitarios. Metodológicamente fue levantada como estudio de caso en una universidad ecuatoriana. Tomó como objeto de estudio el nivel de pregrado de modalidad a distancia, en donde se analizó los vínculos de dicha institución con sus públicos. El trabajo de campo se basó en una metodología de enfoque mixto, utilizando técnicas de recolección de datos cualitativas (entrevistas) y cuantitativas (encuestas), que permitieron conocer y analizar los puntos de vista de los stakeholders, que permitieron trazar pautas de comunicación estratégica para fidelizar a sus stakeholders.
Crimes against children: an apparently terminological knowledge representation of entities in FunGramKB
Authors: Alameda Hernández Ángela , Felices Lago Ángel
Published: July 2017

This article describes an example of the difficulties involved in the construction of a term-based satellite (or domain-specific) ontology integrated in FunGramKB –a lexico-conceptual knowledge base for the computational processing of natural language (Periñán-Pascual & Arcas-Túnez 2004, 2007, 2010a; Periñán-Pascual & Mairal-Usón 2009, 2010). The main hypothesis is that the multilevel model of FunGramKB Core Ontology can be connected to terminological satellite ontologies in order to minimize redundancy and maximize information (Periñán-Pascual & Arcas-Túnez 2010b). To this end we follow the four-phase COHERENT methodology (Periñán-Pascual & Mairal-Usón 2011): COnceptualization, HiErarchization, REmodelling and refinemeNT. In doing so, the paper furnishes substantial evidence on the structuring of a set of concepts borrowed from criminal law, an apparently terminological  domain (cf. Breuker, Valente & Winkels 2005; Valente 2005; Breuker, Casanovas & Klein 2008). The Globalcrimeterm corpus has been used as an empirical foundation (Felices-Lago & Ureña-Gómez Moreno 2012, 2014). To illustrate this process, we have selected the superordinate basic concept +CRIME_00 (Alameda-Hernández & Felices-Lago 2016) and  its basic and terminal subordinate concepts in the domains of organized crime and terrorism (all of them under the metaconcept #ENTITY), particularly those crimes referring predominantly to children or involving children with other vulnerable groups. The creation of specific definitions for the target concepts in this paper uses COREL (a conceptual representation  language (Periñán-Pascual & Mairal-Usón 2010)) and the following upper-level conceptual path: #ENTITY> #PHYSICAL> #PROCESS> +OCCURRENCE_00> +CRIME_00. Consequently, the modelling, subsumption and hierarchisation of concepts such as $ABDUCTION_00, $CHILD_ABUSE_00, $CHILD_PORNOGRAPHY_00, $COERCE_D_00, $CHILD_TRAFFICKING_00, $MOLEST_D_00, $FORCED_LABOUR, among others, are presented.
Computing the meaning of the assertive speech act by a software agent
Authors: Nolan Brian
Published: July 2017

This paper examines the nature of the assertive speech act of Irish. We examine the syntactical constructional form of the assertive to identify its constructional signature. We consider the speech act as a construction whose meaning as an utterance depends on the framing situation and context, along with the common ground of the interlocutors. We identify how the assertive speech act is formalised to make it computer tractable for a software agent to compute its meaning, taking into account the contribution of situation, context and a dynamic common ground. Belief, desire and intention play a role in what is meant as against what is said. The nature of knowledge, and how it informs common ground, is explored along with the relationship between knowledge and language. Computing the meaning of a speech act in the situation requires us to consider the level of the interaction of all these dimensions. We argue that the contribution of lexicon and grammar, with the recognition of belief, desire and intentions in the situation type and associated illocutionary force, sociocultural conventions of the interlocutors along with their respective general and cultural knowledge, their common ground and other sources of contextual information are all important for representing meaning in communication. We show that the influence of the situation, context and common ground feeds into the utterance meaning derivation. The ‘what is said’ is reflected in the event and its semantics, while the ‘what is meant’ is derived at a higher level of abstraction within a situation.
Transnasal Endoscopic Repair of Cerebrospinal Fluid Rhinorrhea
Authors: Gupta Devang P , Dinesh SK , Manavadaria Ashil D
Published: July 2017

Introduction

Cerebrospinal fluid (CSF) leak can arise as a complication of trauma, hydrocephalus, endoscopic sinus surgery, or it may occur spontaneously without any identifiable cause. Surgical repair is recommended in patients who do not respond to the conservative management. In recent years, transnasal endoscopic approach has become the preferred method for repairing CSF leaks, and better outcomes have been reported as compared with the intracranial approaches that were previously used. The objective of this study was to analyze the outcome of transnasal endoscopic repair of CSF rhinorrhea.

Materials and methods

This prospective study was conducted in the Department of ENT, B.J. Medical College, Ahmedabad, India, from April 2013 to July 2016. Twenty-five patients with CSF rhinorrhea were included in the study. They were diagnosed based on the clinical evaluation, computed tomography, and magnetic resonance imaging. These patients did not respond to conservative management and were operated transnasally using rigid endoscope. Patients were followed up for a mean duration of 9 months, and the outcome was analyzed.

Results

The patients included in the study ranged in the age group of 12 to 55 years. Among the patients, 15 were females and 10 were males. The cause of CSF rhinorrhea was traumatic in 18, idiopathic or spontaneous in 7. In 12 patients, the site of leak was cribriform plate, 6 from ethmoid, 5 from sphenoid sinus, and in 2 frontal sinuses were affected. Primary surgery was successful in 23 of cases. In two cases, reexploration had to be performed. Overall success rate was 100%.

Conclusion

Transnasal endoscopic repair of CSF rhinorrhea is highly successful, safe, and less traumatic.

How to cite this article

Gupta DP, Dinesh SK, Manavadaria AD. Transnasal Endoscopic Repair of Cerebrospinal Fluid Rhinorrhea. Clin Rhinol An Int J 2017;10(2):45-48.
Role of Pterygopalatine Fossa Block in achieving Relatively Bloodless Field during Endoscopic Sinus Surgery
Authors: Mathew Reji , Srinivasa Chandrakala , Sathyanarayana Vinayababu , Suryanarayana Sindhura , Harsha Pooja
Published: July 2017

Aim

To study the efficacy of pterygopalatine fossa (PPF) block with 2% xylocaine and 1:80,000 adrenaline on bleeding during endoscopic sinus surgery (ESS).

Materials and methods

Single-blinded prospective comparative study was conducted on patients who underwent bilateral functional endoscopic sinus surgery after obtaining written informed consent. The effect of PPF infiltration was tested by injecting 2% xylocaine with adrenaline on test side, and saline on the control side. The test and the control side were determined by block randomization technique. The surgeon was blinded as to which side the test and control drug was to be given. The surgical field was assessed and graded every 15 minutes on both sides according to Boezaart and Vander Merwe scoring system, and the results were compared and analyzed using Mann–Whitney U test.

Results

Thirty-two patients were included in the study, of whom 59.4% were males. Ethmoidal polyposis was the most common diagnosis (50%). The median computed tomography grade and the endoscopic grade of disease in test side and control side were comparable. The mean blood loss grade on test side was 9.0 ± 3.5 and in control side was 10.9 ± 3.5, and the difference was statistically significant. Significant positive correlation was observed between preoperative endoscopic grade of the disease and blood loss during surgery. A statistically significant correlation was also observed between the vital parameters and blood loss.

Conclusion

Pterygopalatine fossa infiltration with 2% xylocaine and 1:80,000 adrenaline reduces bleeding during ESS.

Clinical significance

This study is pivotal in devising an additional method for providing a clear bloodless operative field which to date is one of the major challenges faced by the otorhinolaryngologist.

How to cite this article

Mathew R, Srinivasa C, Sathyanarayana V, Suryanarayana S, Harsha P. Role of Pterygopalatine Fossa Block in achieving Relatively Bloodless Field during Endoscopic Sinus Surgery. Clin Rhinol An Int J 2017;10(2):62-65.
Correlation of Computed Tomographic Findings and Intraoperative Findings in Patients with Chronic Sinusitis
Authors: Prakash Anjali , Raj Anoop , Wadhwa Vikram , Tandon Swati , Rathore Praveen K
Published: July 2017

Objective

Chronic sinusitis affects more than 30 million people each year worldwide. Computed tomography (CT) has become a standard diagnostic tool in the evaluation of paranasal sinuses (PNS), but medical literature lacks studies correlating preoperative CT and intraoperative findings of functional endoscopic sinus surgery (FESS). The aim of our study was to evaluate ostiomeatal unit on multidetector CT (MDCT) and correlate findings of MDCT with intraoperative findings during FESS in patients with chronic sinusitis and hence check for its usefulness during surgery.

Study design

Prospective clinical study.

Materials and methods

Forty-nine patients with chronic sinusitis who visited the Lok Nayak Hospital, Delhi, India, between October 2010 and February 2012 were included in the study. All such patients underwent preoperative CT scan of PNS before surgery, i.e., FESS with or without septoplasty under general anesthesia.

Results

Maxillary sinus was found to be the most common sinus involved in chronic sinusitis. Preoperative CT findings correlated well with intraoperative findings for all sinuses except left maxillary sinus.

Conclusion

Multiplanar CT of nose and PNS helps to deli­neate the anatomy of nose and PNS, and drainage pathways of sinuses preoperatively. Therefore, the operating surgeon should be well versed with it. Progress of endoscopic sinus surgery can be partially attributed to revolution in imaging modalities.

How to cite this article

Tandon S, Rathore PK, Raj A, Prakash A, Wadhwa V. Correlation of Computed Tomographic Findings and Intraoperative Findings in Patients with Chronic Sinusitis. Clin Rhinol An Int J 2017;10(2):78-85.
Anatomical and Functional Evaluation of Conventional vs Inferior Endoscopic Dacryocystorhinostomy in Study Cases of Idiopathic Chronic Dacryocystitis
Authors: Kashyap Aditya , Negi Satisg , Chauhan Prem L , Thakur Kuldeep
Published: July 2017

Objective

To compare the results of conventional nasal endoscopic dacryocystorhinostomy (DCR) and inferior nasal endoscopic DCR in Study cases of idiopathic chronic dacryocystitis.

Materials and methods

Forty patients diagnosed with idiopathic chronic dacryocystitis were divided into two groups alternately. After relevant investigations, they were subjected for endoscopic DCR by two techniques. Twenty patients underwent conventional endoscopic DCR and 20 underwent inferior endoscopic DCR under transoral pterygopalatine block and topical lignocaine (4%) with adrenaline 1:2,000. After 3 months of follow-up in the outpatient department, nasal endoscopy along with fluorescein dye disappearance test (FDDT) at 10 minutes was done.

Results

Ninety-five percent (19/20) of patients undergoing conventional endoscopic DCR and 90% (18/20) of patients undergoing inferior endoscopic DCR were found to have patent anatomical fistula. On FDDT, nasal endoscopy after 10 minutes revealed 84% (16/19) in group I and 94.4% (17/18) in group II with fluorescein in nasal cavity.

Conclusion

Present study concludes the importance of bony, tendinous, and muscular support of lacrimal sac in physiological lacrimal pump functioning and advantage of relatively new technique of inferior endoscopic DCR. Inferior endoscopic DCR is associated with less operative time as well as less local complications.

How to cite this article

Thakur K, Kashyap A, Negi S, Chauhan PL. Anatomical and Functional Evaluation of Conventional vs Inferior Endoscopic Dacryocystorhinostomy in Study Cases of Idiopathic Chronic Dacryocystitis. Clin Rhinol An Int J 2017;10(2):86-90.
Corrosion Resistance of indigenously Fabricated Dental Magnets for Application in Prosthodontics
Authors: Nadiger Ramesh K , Guttal Satyabodh S
Published: July 2017

Aim

The aim of the study is to evaluate the corrosion resistance of the indigenously fabricated dental magnet.

Materials and methods

The Teflon-encased Neodymium-Iron-Boron (Nd–Fe–B) magnet was put to test to comply with the standardized conditions. The corrosion behavior was examined using the statistical immersion analysis according to the International Organization for Standardization (ISO) 10271:2001: “Dental metallic materials corrosion test methods.” In this method, the maximum ion release after 7 days was evaluated. The test specimen (magnet) was dipped in corrosive solution for 7 days in polypropylene test tube. Both the control and test magnets were dipped in artificial saliva. The pH of artificial saliva was adjusted to 6.75. After 7 days, the eluate solution was subjected to inductively coupled plasma spectroscopy evaluation to trace the amount of metal ions leached out from the magnets.

Results

The mean values for Nd, Fe, and B were 329, 532, and 316 µg/cm2 respectively. According to the ISO standards, the tested product values of ions leached out should be within the value of 200 µg/cm2. The release of corrosion products stayed significantly under the limit as specified by the ISO standard 22674:2006 for all the specimens in the test groups.

Conclusion

Within the limitations of the study, the indigenously fabricated dental magnet had negligible corrosion in comparison with the control group.

Clinical significance

Magnetic attachments have most commonly been used for the retention of mandibular overdentures. Patients with magnet-retained overdentures have reported a high degree of satisfaction with their dentures. Due to the lack of indigenous fabrication and high costs of imported magnet has led to restricted use of magnets in developing countries. Indigenously developed dental magnets can reduce the cost and make them affordable to our native population. The abutment-friendly benefits of magnetic attachment will help retain the removable prostheses effectively.

How to cite this article

Guttal SS, Nadiger RK. Corrosion Resistance of indigenously Fabricated Dental Magnets for Application in Prosthodontics. Int J Prosthodont Restor Dent 2017;7(2):48-52.
Evaluation of Destaining Property of Denture Cleansers on Heat-cured Denture Base Resins using Common Indian Food Stains
Authors: Gopalakrishnan Sandhya , Kashinath KR , Mathew Philip
Published: July 2017

Aim

To compare the efficacy of two different denture cleansers in removing tea and paan stains from conventional and high-impact heat-cured denture base resins and also to find out the duration of contact required by the dentures with cleansers, for best results.

Materials and methods

A total of 80 specimens (40 conventional and 40 high impact) were fabricated. The samples were stained with tea and paan solutions. Stained samples were subjected to immersion in denture cleansers, namely Dentural (sodium hypochlorite) and Fitty Dent (sodium perborate). Optical density values were measured using spectrophotometer at prestain, poststain, postcleansing 15 minutes, postcleansing 8 hours, and post cleansing brushing. The data were analyzed statistically.

Results

High-impact denture base resins stained more than the conventional denture base resin. Staining potential of paan solution was higher than that of tea solution. Dentural (sodium hypochlorite) is superior to Fitty Dent (sodium perborate) in the removal of stains at postcleaning 15 minutes and 8 hours immersion time in both the denture bases and 8 hours immersion time is better.

Conclusion

Both cleansers were effective in removing stains from denture surface, and Dentural is a better cleanser than Fitty Dent for all the postcleansing stages.

Clinical significance

Adequate removal of extrinsic stains from denture surface is essential for the health of the supportive area. The clinician must suggest an acceptable cleansing regime to the patient.

How to cite this article

Gopalakrishnan S, Kashinath KR, Mathew P. Evaluation of Destaining Property of Denture Cleansers on Heat-cured Denture Base Resins using Common Indian Food Stains. Int J Prosthodont Restor Dent 2017;7(2):53-59.
Significant Seasonal Change in Optical Properties by atmospheric humic-like substances (HULIS) in Water-Soluble Organic Carbon Aerosols
Authors: Han Heejun , Kim Guebuem
Published: July 2017

Abstract. Atmospheric humic-like substance (HULIS) is an important fraction of water-soluble organic carbon (WSOC) accounting for the light-absorbing properties of organic aerosols. HULIS is responsible for light-absorbing properties of organic aerosols in the atmosphere. Although various sources of HULIS have been studied extensively, its sinks are poorly constrained. In this study, we found seasonal changes in the optical and chemical characteristics of HULIS and WSOC, which are decreased by approximately 80 % and 30 %, respectively, from the cold season (Oct–Jan) to the warm season (Jun–Sep) due to enhanced solar ultraviolet (UV) radiation. The dominant role of photochemical degradation on light-absorbing organic aerosols, as a sink of HULIS, was further confirmed based on a laboratory experiment by evaluating impact of UV radiation on the optical properties of HULIS and WSOC contents. Our results suggest that seasonal variation of HULIS in WSOC is resulted mainly by photo-induced degradation in the atmosphere. Thus, photochemical degradation of HULIS seems to play a critical role on seasonal variations in the light-absorbing properties of organic aerosols as well as the biogeochemical impact of WSOC on Earth’s surface.
Bulk and Molecular-Level Characterization of Laboratory-Aged Biomass Burning Organic Aerosol from Oak Leaf and Heartwood Fuels
Authors: Fortenberry Claire F. , Walker Michael J. , Zhang Yaping , Mitroo Dhruv , Brune William H. , Williams Brent J.
Published: July 2017

Abstract. The chemical complexity of biomass burning organic aerosol (BBOA) greatly increases with photochemical aging in the atmosphere, necessitating controlled laboratory studies to inform field observations. In these experiments, BBOA from American white oak (Quercus alba) leaf and heartwood samples was generated in a custom-built emissions and combustion chamber and photochemically aged in a Potential Aerosol Mass (PAM) flow reactor. A Thermal desorption Aerosol Gas chromatograph (TAG) was used in parallel with a high-resolution time-of-flight Aerosol Mass Spectrometer (AMS) to analyze BBOA chemical composition at different levels of photochemical aging. Individual compounds were identified and integrated to obtain relative decay rates for key molecular components. A recently-developed chromatogram binning positive matrix factorization (PMF) technique was used to obtain mass spectral profiles for factors in TAG BBOA chromatograms, improving analysis efficiency and providing a more complete determination of unresolved complex mixture (UCM) components. Additionally, the recently characterized TAG decomposition window was used to track molecular fragments created by the thermal decomposition of thermally labile BBOA during sample desorption. We demonstrate that while most components of primary BBOA decrease with photochemical aging, certain components eluting within the TAG thermal decomposition window instead increase. Specifically, the increasing trend in decomposition m / z 44 (CO2+) signals formation of secondary organic aerosol (SOA) in the PAM reactor. Sources of m / z 60 (C2H4O2+), typically attributed to freshly-emitted BBOA in AMS field measurements, were also investigated. From the TAG chemical speciation and decomposition window data, we observed a decrease in m / z 60 with photochemical aging due to the decay of anhydrosugars (including levoglucosan) and other compounds, as well as an increase in m / z 60 due to the formation of thermally labile organic acids within the PAM reactor, which decompose during TAG sample desorption. When aging both types of BBOA (leaf and wood), the AMS data exhibit a combination of these two contributing effects, causing limited change to the overall m / z 60 signal. Our observations demonstrate the importance of chemically-speciated data in fully understanding bulk aerosol measurements provided by the AMS in both laboratory and field studies.
Detection of reflections in GNSS radio occultation measurements using phase matching
Authors: Sievert Thomas , Rasch Joel , Carlström Anders , Pettersson Mats I.
Published: July 2017

Abstract. It is well-known that in the presence of super-refractive (SR) layers in the lower troposphere inversion of GNSS radio occultation (RO) measurements using the Abel transform yields biased refractivity profiles. As such it is problematic to reconstruct the true refractivity from the RO signal. Additional information about this lower region of the atmosphere might be embedded in reflected parts of the signal. To retrieve the bending angle, the phase matching operator can be used. This operator produces a complex function of the impact parameter, and from its phase we can calculate the bending angle. Instead of looking at the phase, in this paper we focus on the function's amplitude. The results in this paper show that the signatures of surface reflections in GNSS RO measurements can be significantly enhanced when using the phase matching method by processing only an appropriately selected segment of the received signal. We can then identify reflection signatures even in cases where they are normally obscured by the direct signal's influence on the phase matching amplitude. This signature enhancement is demonstrated by simulations and confirmed with real MetOp-A data.