bluuebunny/crossref_metadata_2025 huggingface dataset:
ENSEÑANDO ADICIÓN Y SUSTRACCIÓN A PARTIR DEL MÉTODO PARA EL APRENDIZAJE NATURAL DE LAS MATEMATICAS Y LA GRANJA DE DON JUAN
Authors: Pantano Mogollón Leidy Viviana
Published: June 2015

Este artículo corresponde a los resultados obtenidos al realizar una experiencia en el aula a partir de la asignatura práctica intermedia V de la Licenciatura en Educación Básica con Énfasis en Matemáticas de la Universidad Distrital. En dicha práctica se pretendió enseñar la noción de adición y sustracción a un grupo de estudiantes de grado primero, a partir del diseño, gestión y evaluación de una secuencia didáctica, para la cual se hizo uso del método del aprendizaje natural de las matemáticas y las orientaciones para el diseño y elaboración de actividades de aprendizaje y de evaluación.  Los resultados más relevantes al terminar la práctica refieren a las estrategias a las que acudieron los estudiantes para darle solución a situaciones problema como: las estrategias sistemáticas de asignación y de conteo para así reconocer grupos con mayor o igual cantidad y para agrupar los objetos teniendo en cuenta la cantidad de objetos que debe agrupar (base), y al realizar adiciones o sustracciones tienen en cuenta el signo: que se debe comenzar a agrupar y desagrupar desde las unidades.
INCIDENCIA DEL DETERIORO PROGRESIVO DEL ARBOLADO URBANO EN EL VALLE DE ABURRÁ, COLOMBIA
Authors: Restrepo Orozco Hector Ivan , Moreno H Flavio , Helena Hoyos E. Claudia
Published: June 2015

El arbolado urbano de los municipios del Valle de Aburrá, Colombia, está evidenciando deterioro y muerte por estrés hídrico y térmico, contaminación atmosférica, urbanización y ataques de plagas y enfermedades. Se realizó un muestreo de 11 710 individuos de 25 especies de árboles y palmas en el área metropolitana del Valle de Aburrá, con el propósito de registrar síntomas de deterioro progresivo (DP) como marchitez de ramas y secamiento descendente. Se estimó un modelo logit multifactorial que relaciona la incidencia del DP con características dasométricas de los individuos, el sitio de siembra y el número de afectaciones. Se encontraron 720 individuos con DP (incidencia de 6.1%). Los modelos logit tuvieron un ajuste satisfactorio a los datos y evidenciaron que existe una relación estadísticamente significativa entre la incidencia del deterioro de árboles y el diámetro del árbol, su ubicación (municipio), especie, sitio de siembra (zona verde, piso duro, alcorque) y presencia de otras afectaciones.
INTEGRACIÓN DE PLANTACIONES FORESTALES COMERCIALES COLOMBIANAS EN CONCEPTOS DE BIORREFINERÍA TERMOQUÍMICA: UNA REVISIÓN
Authors: Pérez Bayer Juan Fernando , Barrera Rolando , Ramírez Córdoba Gloria Lucía
Published: June 2015

La integración de las plantaciones forestales comerciales colombianas en conceptos de biorrefinería se justifica desde las perspectivas técnica, energética, social y ambiental; adicionalmente se enmarca dentro de diversos planes y políticas de gobierno que consideran el aprovechamiento energético de la biomasa como alternativa recursiva para el potencial silvicultural del país. En este trabajo se revisan algunos procesos específicos que pueden evaluarse como posibles estrategias de integración de la madera plantada en Colombia bajo el concepto de biorrefinería. Se abarcan procesos de gasificación de baja-media potencia, gasificación a escala industrial para producción de biocombustibles de alta calidad, procesos de mejoramiento de la madera como biocombustible sólido, y la producción de biocarbón mediante métodos alternativos; por último, se revisa el mercado potencial de productos forestales de valor agregado. A modo de conclusión se destaca el alto potencial forestal de Colombia, por tanto, la unión estratégica entre universidades, centros de investigación y el sector forestal debe buscar la eficiencia e innovar para ofrecer productos diferenciadores y con valor agregado, aprovechando la existencia de nichos de mercado prácticamente inexplorados en Colombia, como la bioenergía y los bioproductos. A ese punto se dirige esta revisión, pues es necesario avanzar en el conocimiento que se tiene de las características y posibles usos de algunas especies forestales que se cultivan en el país desde conceptos de biorrefinería para bioenergía, biocombustibles y bioproductos bajo una perspectiva de sostenibilidad.
Pyrazoline carboxylates as selective MAO-B inhibitors: Synthesis and Biological screening
Authors: Badavath Vishnu Nayak , Singh Alok Kumar , Jadav Surender Singh , Mishra Nibha , Dev Abhimanyu , Sinha Barij Nayan , Jayaprakash Venkatesan
Published: June 2015

A series of carboxylates of pyrazolines (3a-3h) were synthesized from ethyl 2-benzylidene-3-oxobutanoate esters using hydrazine hydrate and ethanol as solvent. All the compounds (3a-3h) screened for their MAO inhibitory activity using rat brain MAO. All the compounds were found to be selective, reversible and competitive inhibitors of MAO-B except compound 3d and 3h which was found to be non-selective. These compounds were found to be active against MAO-B at concentration close to 1 ?M (3e = 0.99 ?M, 3a = 0.92 ?M and 3b = 1.11?M). Compound 3a was potent amongst these while 3b was more selective towards MAO-B with selectivity index 2.88.
Lower Connectivity is Better: The Effects of Network Structure on Redundancy of Ideas and Customer Innovativeness in Interdependent Ideation Tasks
Authors: Stephen Andrew T. , Zubcsek Peter Pal , Goldenberg Jacob
Published: June 2015

This article examines the popular marketing practice of interdependent ideation, whereby firms solicit ideas from customers through online platforms that enable customers to be exposed to or “inspired” by other customers’ ideas when generating their own. Although being exposed to others’ ideas means that customers are “connected” (at least implicitly) in a communication network that facilities the flow of ideas, the effect of network structure on individual innovativeness has not been considered in this context. The authors examine how, when, and why network structure—specifically, the clustering, or interconnectivity, of one's “inspirations” (other customers)—affects the innovativeness of individual customers’ product/service ideas in ideation tasks. Across five experiments, the authors show that (1) higher clustering/interconnectivity negatively affects the innovativeness of a customer's ideas; (2) this effect occurs because idea inspirations are more likely to be similar or redundant when their sources (i.e., other customers to which one is connected) are clustered; (3) greater redundancy among ideas used as inspirations is what causes lower innovativeness; and (4) this effect is attenuated when customers do not rely on other customers’ ideas for inspiration.
Capital, Inequality and Justice: Reflections on Capital in the Twenty-First Century
Authors: Piketty Thomas
Published: June 2015

In this article, I seek to sharpen the discussion about my book Capital in the twenty-first century, and to address some of the many issues raised by the very interesting papers that were put together by the editors of Basic Income Studies. I start by summarizing the multidimensional approach to capital and power that I develop in my book. I then clarify the role played by r>g in my analysis of wealth inequality. Finally, I discuss some of the implications of my analysis for optimal taxation; the relation between wealth, welfare and power; the basic income proposal; and the regulation of capital and property relations.
Measuring association via lack of
co-monotonicity: the LOC index and a
problem of educational assessment
Authors: Qoyyimi Danang Teguh , Zitikis Ricardas
Published: June 2015

Measuring association, or the lack of it, between variables plays an important role in a variety of
research areas, including education,which is of our primary interest in this paper. Given, for example, student
marks on several study subjects, we may for a number of reasons be interested in measuring the lack of comonotonicity
(LOC) between the marks, which rarely follow monotone, let alone linear, patterns. For this
purpose, in this paperwe explore a novel approach based on a LOCindex,which is related to, yet substantially
different from, Eckhard Liebscher’s recently suggested coefficient of monotonically increasing dependence.
To illustrate the new technique,we analyze a data-set of student marks on mathematics, reading and spelling.
Estimating the effectiveness of species identification by sequencing of two chloroplast DNA loci (matK and rbcL) in selected groups of Polish flora
Authors: Combik M. , Mirek Z.
Published: June 2015

This paper focuses on assessing the effectiveness of species identification using barcoding standard loci (matK and rbcL) for a selected group of Polish flora. 55 samples of 17 species from six taxonomic groups representing various parts of the system, including Monocots and Dicots as well as Pteridophytes, were selected. PCR amplification success was 100% (of all samples) for the rbcL primer and 64% for matK primers giving in sum 87 fragments for sequencing. The aligned sequences show that in the
Facile solvothermal synthesis of bimetallic CoMoS2 and NiMoS2 nanospheres
Authors: Akram Hanane , Mateos-Pedrero Cecilia , Gallegos-Suárez Esteban , Guerrero-Ruíz Antonio , Chafik Tarik , Rodríguez-Ramos Inmaculada
Published: June 2015

Bimetallic nickel or cobalt molybdenum disulfide (MMoS
Impacts of ultrasound on leaching recovery of zinc from low grade zinc oxide ore
Authors: Li Shiwei , Chen Weiheng , Yin Shaohua , Ma Aiyuan , Yang Kun , Xie Feng , Zhang Libo , Peng Jinhui
Published: June 2015

On the basis of an experiment on ultrasonic enhanced ammonia leaching of low grade zinc oxide ores, the effects of the total ammonia concentration, the ratio between the NH
Nonalcoholic fatty liver disease and fatigue in long-term survivors of childhood-onset craniopharyngioma
Authors: Hoffmann Anika , Bootsveld Klaus , Gebhardt Ursel , Daubenbüchel Anna M M , Sterkenburg Anthe S , Müller Hermann L
Published: June 2015

Objective

Hypothalamic obesity in childhood craniopharyngioma (CP) patients carries a high risk for development of metabolic syndrome. In metabolic syndrome, the development of nonalcoholic fatty liver disease (NAFLD) is known. The aim of this study is to detect the risk for NAFLD in childhood-onset CP.

Design

This cross-sectional study included liver computed tomography (CT); ultrasound analysis of abdomen; measurements of serum parameters, height, weight and body composition; and daily medication of patients with childhood-onset CP.

Methods

A total of 384 patients recruited in trials HIT Endo and KRANIOPHARYNGEOM 2000 were analyzed. Ninety-four survivors were included by fulfilling the criteria of proven hypothalamic involvement (HI), a minimum time interval of 5 years between diagnosis and study, and a minimum age of 18 years at the time of evaluation. A total of 19 patients agreed to participate. To quantify the degree of steatosis hepatis, analyses of liver density were performed once by non-contrasted CT of liver sections.

Results

NAFLD occurs in about 50% of CP patients with HI and is associated with elevated liver enzymes and homeostasis model assessment index. BMI is not an effective predictive factor but body fat mass measured by near-infrared spectroscopy (NIRS) is. Over half of CP patients (60%) with NAFLD are treated with stimulating agents, with risk of hepatic side effects.

Conclusions

NAFLD is a major adverse late effect in childhood-onset CP. NIRS rather than BMI should be used to measure body composition and predict NAFLD. Stimulating agents for treatment of fatigue and daytime sleepiness in CP should be prescribed judiciously.
Selection on Optimal Haploid Value Increases Genetic Gain and Preserves More Genetic Diversity Relative to Genomic Selection
Authors: Daetwyler Hans D , Hayden Matthew J , Spangenberg German C , Hayes Ben J
Published: June 2015

Doubled haploids are routinely created and phenotypically selected in plant breeding programs to accelerate the breeding cycle. Genomic selection, which makes use of both phenotypes and genotypes, has been shown to further improve genetic gain through prediction of performance before or without phenotypic characterization of novel germplasm. Additional opportunities exist to combine genomic prediction methods with the creation of doubled haploids. Here we propose an extension to genomic selection, optimal haploid value (OHV) selection, which predicts the best doubled haploid that can be produced from a segregating plant. This method focuses selection on the haplotype and optimizes the breeding program toward its end goal of generating an elite fixed line. We rigorously tested OHV selection breeding programs, using computer simulation, and show that it results in up to 0.6 standard deviations more genetic gain than genomic selection. At the same time, OHV selection preserved a substantially greater amount of genetic diversity in the population than genomic selection, which is important to achieve long-term genetic gain in breeding populations.
Genetics of Intraspecies Variation in Avoidance Behavior Induced by a Thermal Stimulus in Caenorhabditis elegans
Authors: Ghosh Rajarshi , Bloom Joshua S , Mohammadi Aylia , Schumer Molly E , Andolfatto Peter , Ryu William , Kruglyak Leonid
Published: June 2015

Individuals within a species vary in their responses to a wide range of stimuli, partly as a result of differences in their genetic makeup. Relatively little is known about the genetic and neuronal mechanisms contributing to diversity of behavior in natural populations. By studying intraspecies variation in innate avoidance behavior to thermal stimuli in the nematode Caenorhabditis elegans, we uncovered genetic principles of how different components of a behavioral response can be altered in nature to generate behavioral diversity. Using a thermal pulse assay, we uncovered heritable variation in responses to a transient temperature increase. Quantitative trait locus mapping revealed that separate components of this response were controlled by distinct genomic loci. The loci we identified contributed to variation in components of thermal pulse avoidance behavior in an additive fashion. Our results show that the escape behavior induced by thermal stimuli is composed of simpler behavioral components that are influenced by at least six distinct genetic loci. The loci that decouple components of the escape behavior reveal a genetic system that allows independent modification of behavioral parameters. Our work sets the foundation for future studies of evolution of innate behaviors at the molecular and neuronal level.
Mandibular reconstruction using free vascularized iliac crest grafts and dental implants
Authors: Moldovan Iuliu , Juncar Mihai , Dinu Cristian , Onisor-Gligor Florin , Rotar Horatiu , Bran Simion , Baciut Grigore
Published: June 2015

Background and aim. The mandible is frequently affected by tumor masses present in the oral cavity and is included in the tumor ablation procedure, with major functional and esthetic consequences for the patient. A method of high current interest in mandibular reconstruction is based on the use of free vascularized iliac crest grafts, followed by reconstruction using dental implants.Methods. This study presents the case of four patients benefiting from this treatment method, and monitors the treatment stages and their clinical evolution after mandibular reconstruction and dental implant placement.Results. The postoperative evolution of the patients was favorable, with the integration of the iliac crest grafts and dental implants. After prosthetic loading, the masticatory as well as the esthetic function of the patients was restored to a standard close to the initial one.Conclusions. This mandibular reconstruction method proved to be effective, with a high degree of reliability and a significant improvement of the patients’ quality of life.
In vivo orthodontic retainer survival - a review
Authors: Labunet Anca Victoria , Badea Mîndra
Published: June 2015

AbstractBackground. Relapse following orthodontic treatment is a constant concern of orthodontists. Fixed retention is preferred especially for the lower arch by most orthodontists.Objectives:. This review focuses on in vivo studies. The main objective is to determine the survival rate of different types of retainer: glass-fiber reinforced composite resin, polyethylene or multistrand stainless steel wire bonded to each tooth from canine to canine in the mandibular arch. A second objective is to assess which of these types is less likely to cause additional problems and the third objective is to evaluate the factors that may influence retainer survival.Results and conclusions. There were 8 studies identified that matched the objectives stated. Curent in vivo studies on survival rate take little notice of the role of the material used for bonding of the fixed retainer. It is not possible to draw a conclusion on reliability of new types of retainers glass fiber reinforced composite resin or polyethylene compared to multistrand stainless steel wire. The multistrand wire remains the gold standard for fixed retention.Although it is a logical outcome that retainer survival is dependent on the application technique, there seems to be no research outcome proving that operator experience, moisture control are essential, nor does patient age or sex have statistically proven effects on survival rates.Adequate studies that involve such aspects should be performed.
Deleterious oral habits in children with hearing impairment
Authors: Suhani Raluca Diana , Suhani Mihai Flaviu , Muntean Alexandrina , Mesaros Michaela , Badea Mindra Eugenia
Published: June 2015

Background and aims. Deleterious oral habits represent a serious public health issue. The information available about this problem in children with hearing impairment is insufficient. The purpose of this study was to investigate the prevalence of deleterious oral habits among children with hearing impairment and comparing results against children without hearing impairment .Method. This epidemiological study was carried out in a sample size of 315 children. We used a random sampling technique that included 150 children with hearing impairment and 165 without hearing impairment. All subjects were submitted to a clinical examination. The parents/legal guardians were asked to complete a questionnaire regarding the deleterious habits of their children.Results. The data collected indicated a higher prevalence of deleterious oral habits among children with hearing impairment: 53.3% as opposed to 40.6% among children without hearing impairment. There was a higher incidence of malocclusion in children with hearing impairment (79.3%) compared to children without hearing impairment (57%).Conclusions. This study highlighted the need to establish protocols for preventive orthodontic treatment at an early age, in order to reduce the deleterious oral habits and prevent malocclusion. Dental institutions/clinicians need to implement oral care programs including proper oral education aiming to promote oral health.
Genetic testing in patients with global developmental delay/intellectual disabilities. A review
Authors: Miclea Diana , Peca Loredana , Cuzmici Zina , Pop Ioan Victor
Published: June 2015

Genetic factors are responsible for up to 40 % developmental disability cases, such as global developmental delay/ intellectual disability (GDD/DI). The American and more recently, the European guidelines on this group of diseases state that genetic testing is essential and should become a standardized diagnostic practice. The main arguments for the necessity of implementing such a practice are: (1) the high prevalence of developmental disabilities (3% of the population); (2) the high genetic contribution to this type of pathology; (3) insufficient referral for genetic consultation. In an attempt to address these issues, the purpose of this paper is to present the genetic etiology of global developmental delay / intellectual disability with emphasis on the need to implement a genetic testing protocol for the patients with GDD/DI, as indicated by the current guidelines. Chromosomal abnormalities and fragile X syndrome are the most frequent causes of developmental disabilities and the techniques employed to detect such genetic disorders should be used as first line investigations of GDD/DI.
Assesment of the Duke criteria for the diagnosis of infective endocarditis after twenty-years. An analysis of 241 cases
Authors: Topan Adriana , Carstina Dumitru , Slavcovici Adriana , Rancea Raluca , Capalneanu Radu , Lupse Mihaela
Published: June 2015

Background and aims. In the absence of classical features (fever, cardiac murmur, and peripheral vascular stigmata) the diagnosis of infective endocarditis (IE) may be difficult.Current clinical guidelines for the diagnosis and management of IE recommend the use of modified Duke criteria. Correct and prompt diagnosis of IE is crucial for the treatment and outcome of the patients.The aim of this study was to evaluate the presence and the individual value of each criterion of the modified Duke criteria in our patients with infective endocarditis.Methods. We performed a prospective observational study between January 2008 – June 2014, in which we enrolled consecutive adult patients admitted for suspicion of IE to the Hospital of Infectious Diseases and at the Heart Institute . We used and extensive database in order to collect demographic data, laboratory and echocardiography results, evolution and outcome of the patients. Using the modified Duke criteria we identified 3 categories of IE: definite, possible and rejected. In order to evaluate the importance of each criterion in the diagnosis of IE we tested two hypotheses. First, we excluded each criterion from the final diagnosis and we counted how many cases felt into a lower category. Second, after adding each major and minor criterion, we tested how many cases would have been classifiable as definite IE.Results. The study included 241 adult patients with a mean age 58.16 years and sex ratio male/female 1.94. According to the modified Duke criteria 137 patients had definite IE, 79 patients had possible IE and 25 cases had rejected IE We had blood cultures positive IE in 109 cases and blood culture negative IE (BCNE) in 132 (71.21%) cases. Antibiotic treatment prior to blood culture was recorded in 152 (63.07%) patients. In the absence of the echocardiography major criterion, 43% of cases would become possible. After extraction of major microbiological criterion, only one third of definite cases would become possible. Minor criteria such as fever and predisposition contributed to the diagnosis only in 10% of cases. In the presence of vascular or immunological phenomena, or in the presence of minor microbiological criterion, half of the possible IE cases could become possible.Conclusion. Twenty-years after their launch, the Duke criteria for the diagnosis of IE continue to be important tools. Low index of suspicion of IE and inappropriate use of antibiotics may have a great negative impact on the diagnosis of IE. Nowadays, the scarcity of classical Osler manifestations - bacteremia, fever and peripheral stigmata - makes the diagnosis of IE a challenge.
Surgical Outcomes in Native Valve Infectious Endocarditis: The Experience of the Cardiovascular Surgery Clinic – Cluj-Napoca Heart Institute
Authors: Molnar Adrian , Muresan Ioan , Trifan Catalin , Pop Dana , Sacui Diana
Published: June 2015

Background and aims. The introduction of Duke’s criteria and the improvement of imaging methods has lead to an earlier and a more accurate diagnosis of infectious endocarditis (IE). The options for the best  therapeutic approach and the timing of surgery are still a matter of debate and require a close colaboration between the cardiologist, the infectionist and the cardiac surgeon.Methods. We undertook a retrospective, descriptive study, spanning over a period of five years (from January 1st, 2007 to December 31st, 2012), on 100 patients who underwent surgery for native valve infectious endocarditis in our unit.Results. The patients’ age varied between 13 and 77 years (with a mean of 54 years), of which 85 were males (85%). The main microorganisms responsible for IE were: Streptococcus Spp. (21 cases – 21%), Staphylococcus Spp. (15 cases – 15%), and Enterococcus Spp. (9 cases – 9%). The potential source of infection was identified in 26 patients (26%), with most cases being in the dental area (16 cases – 16%). The lesions caused by IE were situated in the left heart in 96 patients (96%), mostly on the aortic valve (50 cases – 50%). In most cases (82%) we found preexisting endocardial lesions which predisposed to the development of IE, most of them being degenerative valvular lesions (38 cases – 38%). We performed the following surgical procedures: surgery on a single valve - aortic valve replacement (40 cases), mitral valve replacement (19 cases), mitral valve repair (1 case), surgery on more than one valve – mitral and aortic valve replacement (20 cases), aortic and tricuspid valve replacement (1 case), aortic valve replacement with a mechanical valve associated with mitral valve repair (5 cases), aortic valve replacement with a biological valve associated with mitral valve repair (2 cases), and mitral valve replacement with a mechanical valve combined with De Vega procedure on the tricuspid valve (1 case). In 5 patients (5%) the bacteriological examination of valve pieces excised during surgery was positive. In 3 cases it matched the germ identified in the hemocultures, and in 2 cases it evidenced another bacterium.Conclusion. The overall mortality of 5% is well between the limits presented in literature, being higher (30%) in patients who required emergency surgery. For the patients who return into our clinic with prosthetic valve endocarditis, the mortality after surgery was even higher (50%).
La nueva poesía en tela de juicio: apuntes sobre el debate literario en torno a la obra de Luis de Góngora
Authors: Pedraza Rodríguez Amanda
Published: June 2015

A través de una revisión de los discursos críticos más relevantes que la publicación de las obras mayores de Luis de Góngora suscitó, este trabajo intenta ilustrar algunos de los fundamentos teóricos que, basados en la tradición clásica y, particularmente, en las poéticas de Platón, Aristóteles y Horacio, nutrieron los debates sobre la poesía en la primera mitad del siglo XVII. Se analizan, en concreto, las diferentes posturas que dichos documentos reflejan en torno a los problemas esenciales que la poesía gongorina planteaba, entre éstos, la correspondencia de géneros y estilos, las innovaciones léxicas, el origen de la creación artística y la oscuridad poética.
Las múltiples faces del travesti: la dispersión del sujeto en los espacios transculturales de la narrativa neobarroca de Severo Sarduy
Authors: Kulawik Krzysztof
Published: June 2015

Una relectura de la novela Cobra de Severo Sarduy muestra fenómenos posmodernos que aplican a la literatura latinoamericana actual. La combinación de motivos de ambigüedad sexual (travestismo, androginia) con experimentación y exuberancia, presenta una novela neobarroca. El desplazamiento de referentes estables de sexo, nación y cultura en los personajes y espacios narrativos problematiza el sentido unívoco de la identidad. Incorporando el travestismo, la narrativa neobarroca de Sarduy deconstruye las categorías fijas de la identidad (sexo, nación, Latinoamérica, Occidente y Oriente). Al habitar un espacio imaginario fluido, transexual y transcultural, los sujetos ambisexuales transgreden el patrón heterosexual americano y atenúan las distinciones entre la masculinidad y la feminidad, como entre lo occidental y lo oriental. En el contexto de los estudios culturales, este análisis posibilita formular una teoría de identidad transitiva, basada en la movilidad de referentes. También es posible aplicarlo al examen de la narrativa de otros autores hispanoamericanos recientes.
Juan Forn y el asedio a la historia: hacia una genealogía de los saberes sujetos en una novela argentina contemporánea
Authors: Niemetz Diego E.
Published: June 2015

Partiendo de algunas ideas de Michel Foucault sobre la construcción de una genealogía, se analiza cómo María Domecq de Juan Forn ofrece un ejemplo sobre el modo en que la novela histórica posmoderna, o nueva novela histórica, replantea los relatos a través de los cuales se construye una identidad familiar (que, en muchos casos, pretende coincidir con la identidad de un país). En el texto seleccionado es posible observar la introducción de un discurso de denuncia y desenmascaramiento de las atrocidades cometidas por el poder. En una perspectiva más amplia será factible señalar el modo en que esa revisión crítica de la elite dominante apunta a cuestionar el relato oficial sobre los hechos del pasado, es decir, la forma en que se construye la Historia. A partir de dicho movimiento revisionista, se llega a revelar que la memoria de la historia es producto de una relación de fuerzas que se debe desnudar y denunciar.
Caracterización epidemiológica de parásitos gastroíntestínales zoonóticos en caninos con dueño del área urbana del municipio de La Mesa, Cundinamarca
Authors: Alarcón Zonia , Juyo Vanessa , Larrota Jinnette
Published: June 2015

El objetivo del presente estudio fue caracterizar los parásitos gastrointestinales zoonóticos en caninos con dueño del área urbana del Municipio de La Mesa, Cundinamarca. Con este fin, se realizó un censo tipo encuesta que determinó la población real de caninos y arrojó un total 1142 perros censados; de éstos, sólo se incluyeron 897 en el estudio por contar con información completa. Se tomaron 122 muestras de materia fecal de los caninos, las cuales fueron analizadas mediante la técnica de concentración de formol- acetato de etilo y leídas por microscopía. La prevalencia total de parasitosis encontrada fue 19.67% (24/122). El parásito hallado con mayor frecuencia fue Ancylostoma spp. (17.21%), seguido de Trichuris spp. (1.63%) y Giardia spp. (0.81%). En comparación con otros estudios en Colombia, la prevalencia hallada fue menor y no se encontraron multiparasitosis. No se constató relación (P > 0.05) entre la presencia de parásitos y las variables estudiadas (raza, edad, sexo, desparasitación, vacunación, fuente de agua de consumo y lugar donde habita). Se concluye que la presencia de parásitos encontrada constituye un riesgo para la salud humana y animal, y por lo tanto, es necesario implementar estrategias educativas y sanitarias en la comunidad y elaborar planes de desparasitación y diagnóstico parasitológico para las mascotas.
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Size-Controlled Microwave-Assisted Synthesis of Water-Dispersible Cd(Se,S) Quantum Dots for Potential Biological Applications
Authors: Calderón-Ortiz E. , Bailón-Ruiz S. , Alamo-Nole L. , Rodriguez-Orengo J. , Perales-Perez O.
Published: June 2015

Nanomedicine is fostering significant advances in the development of platforms for early detection and treatment of diseases. Nanoparticles (NPs) like quantum dots (QDs) exhibit size-dependent optical properties for light-driven technologies, which might become important in bio-imaging, sensing and photo-dynamic therapy (PDT) applications. The present research addresses the synthesis of water-stable Cd-based QDs via a Microwave-Assisted synthesis approach using cadmium sulfate salt, and thioglycolic acid as Cd- and S-precursors, respectively. Selenide ions were available by reductive leaching of metallic Selenium in Sodium bisulfite solution. The size control and the tunability of the optical properties were achieved by a suitable control of the reaction temperature (in the 140°C- 190°C range) and reaction time (10 minutes-40 minutes). X-ray diffraction analyses suggested the development of a CdSe,S face cubic centered structure; the broadening of the diffraction peaks indicated the presence of very small nanocrystals in the samples. The average crystallite size was estimated at 5.50 nm ± 1.17nm and 3.72 nm ± 0.04 nm, for nanoparticles synthesized at 180°C after 40 minutes or 10 minutes of reaction, respectively. HRTEM images confirmed the crystalline nature and the small size of the synthesized nanocrystals. In turn, the exciton was red-shifted from 461nm to 549 nm when the reaction temperature was prolonged from 140°C to 190 °C, suggesting the crystal growth. The corresponding band gap values were approximately 2.2 eV, confirming the quantum confinement effect (bulk value 1.74eV). This red shift was also evidenced in PL measurements where the main emission peak was shifted from 507 nm to 564 nm when the samples were excited at 420 nm. A narrow size-tunable emission also was supported by the full width at half maximum (∼ 45 nm) for the synthesized nanocrystals. The reactive oxygen species generation capability of as-synthesized QDs was also investigated. The correlation between the particle size and the generation of (ROS) by the degradation of methylene blue was evident with a reduction of MB concentration from 10μM to 7.5μM and 6.7μM after 15 minutes of UV irradiation for reaction time of 10 min. and 40 min. respectively. No additional degradation was noticed after 60 minutes of irradiation.
Optical characterization of solution prepared Cu2SnS3 for photovoltaic applications
Authors: de Wild Jessica , Robert Erika V. C. , El Adib Brahime , Dale Phillip J.
Published: June 2015

Monoclinic Cu2SnS3 was made by solution based processing of the precursor metals after which the samples are annealed in a sulphur environment. XRD and Raman spectra shows that the monoclinic phase was synthesised. One sample was further etched in KCN and HCl to remove possible secondary phases. Transmission spectra show that the material has two optical transitions and in conjunction with reflection data absorption spectra were calculated. The two optical transitions are determined to be 0.91 and 0.98 for the unetched sample and 0.90 and 0.95 eV for the etched sample. The values of the optical transitions are within the error the same and thus etching does not affect the values of these optical transitions. Photoluminescence spectra map show only one luminescence peak with a maximum at 0.95 eV, which is consistent with the values found by absorption spectra. This in combination with the Raman spectra and XRD indicates that the sample contains only one polymorph of Cu2SnS3, which is monoclinic. Therefore the two optical transitions are intrinsic to monoclinic Cu2SnS3.
Modeling of CZT Response to Gamma Photons Using MCNP and Garfield
Authors: Lassiter Jonathan , Robinson Randy , Williams Latressa , Babalola Stephen , Muntele Claudiu
Published: June 2015

CZT is a semiconductor material that promises to be a good candidate for uncooled gamma radiation detectors. However, to date, technological difficulties in production of large size defect-free CZT crystals are yet to be overcome. The most common problem is accumulation of tellurium precipitates as microscopic inclusions. These inclusions influence the charge collection through charge trapping and electric field distortion. The common work-around solutions are to fabricate pixelated detectors by either grouping together many small volume CZT crystals to act as individual detectors, or to deposit a pixelated grid of electrical contacts on a larger, but defective, crystal, and selectively collect charge. These solutions are satisfactory in an R&D environment, but are unsuitable for mass production and commercial development. Our modeling effort is aimed at quantifying the various contributions of tellurium inclusions in CZT crystals to the charge generation, transport, and collection, as a function of inclusions size, position, and concentration. We model the energy deposition of gamma photons in the sensitive volume of the detector using LANL’s MCNP code. The electron-hole pairs produced at the energy deposition sites are then transported through the defective crystal and collected as integral charge at the electrical contact sites using CERN’s Garfield software package. The size and position distribution of tellurium inclusions is modeled by sampling experimentally measured distributions of such inclusions on a variety of commercially-grown CZT crystals using IR microscopy and image processing software packages.
Expressive identity in the voices of three Australian saxophonists
Authors: Evans Sandy
Published: June 2015

Saxophonists Bernie McGann, Kim Sanders and Tony Gorman are instantly recognisable by their distinctive sounds. Their lives and music exemplify three different ways that individual identity shaped the structure and sound of jazz in an Australian context. What musical materials and processes do they use to express their identity? How does their music reflects their cultural, social, and personal histories, and aesthetic preferences? What insights does their creative work offer into understandings about musical thought and practice, and identity in Australian jazz culture? These questions are investigated through analysis and discussion of a composition and improvisation from a seminal recording by each saxophonist: McGann’s ‘Playground’, Sanders’ ‘Gnome Chomsky’s Deep Focus Boogie-Woogie’ and Gorman’s ‘Spice Island’. The differences between these three saxophonists, and the wide variety of global musical source cultures they draw from indicate the impossibility of representing a singular Australian jazz identity. I argue that it is imperative to consider Australian jazz identity as multiply-constituted, and to undertake critical enquiry to understand and document the musical practices of the individuals and groups who create and inhabit Australia’s richly nuanced musical spaces.
Examining the legend and music of Australian saxophonist, Frank Smith
Authors: Whiteoak Ralph
Published: June 2015

Like most countries that possess a history of jazz performance, Australia has its share of legendary jazz figures. Of these, the saxophonist Frank Smith (1927–1974) is considered to have been the most talented and original modern jazz saxophonist of his generation. This article questions aspects of the Smith ‘legend’ by testing various claims, anecdotes and stories against data provided by those who were close to him, against other data extracted from an examination of primary printed sources of his era, and also by examining claimed influences on Smith’s creativity. The article seeks to explain what it was about Smith’s approach to playing jazz that gave him such a reputation for originality and virtuosity. Smith’s place in the pantheon of pioneer modernists in Australian jazz is based on a considerable, diverse and often anecdotal range of recollected strengths and idiosyncrasies. These range from strictly musical qualities, including his extraordinary ear, virtuosic execution, harmonic innovativeness and mentoring generosity, to more personal characteristics, including his notoriously dishevelled and mistreated saxophone. It is impossible to span the full spectrum of the Smith legend here so, while I encompass some of its features, my primary analytical musical focus is upon the aspect of his musicianship for which there is hard documentary evidence in the form of unpublished sound recordings. In particular, it considers what credence can be given to claims that Smith’s strikingly original ‘sound’ was influenced by his interest in the theories of the composer Paul Hindemith.
Early jazz in Australia as oriental exotica
Authors: Scott-Maxwell Aline
Published: June 2015

Australian jazz historians sometimes note how the earliest so-called ‘jazz’ music to reach Australia via the popular stage was largely perceived as ‘novelty noise’ due to the use of new ‘jazz’ percussion effects and other novelty sounds in intriguingly unfamiliar combinations. Notably, Chinese percussion instruments were important ‘novelty noise’ components of early jazz. Yet, by the onset of the Jazz Age, Australians already had a long familiarity with ‘oriental’ sounds both through musical representations of the ‘Orient’ in popular stage and other entertainments and also direct exposure to Chinese music performances, ranging from ‘noisy’ Chinese opera performances on the mid-nineteenth century goldfields to local and visiting Chinese vaudeville acts in the early twentieth century. The association between oriental exotica and early jazz was such that the ‘strange’, exotic, ‘noisy’ sounds of Chinese music came sometimes to be understood as ‘jazz’. This association was successfully exploited by Chinese jazz acts such as Sun Moon Lee and his ‘14 Oriental Stars with the Chinese Jazz Band’ during their six-month long Australian tour in 1927, when they were described as both ‘the real thing in jazz’ and ‘the real thing in Chinese’ (Brisbane Courier 3 May 1927). Tin Pan Alley-style songs with ‘oriental’ themes became a further important intersection between early jazz and oriental exotica in Australia as a significant sub-genre of Jazz-Age dance band or so-called jazz orchestra repertoire. The article examines various connections and convergences between oriental exotica and early ‘jazz’ of the 1920s within the Australian context and argues that diverse notions of jazz as exotica contributed to how ‘jazz’ was presented and perceived in Australia.
The lost history of jazz on early Australian popular music television
Authors: Giuffre Liz
Published: June 2015

This article seeks to develop existing cultural histories of genre and broadcasting in Australia. I argue that jazz was present on early music television but its history as such has been lost, and by extension, the genre’s contribution to broader popular music legacies in Australia has been overlooked. The article draws on original production documents for the pioneering local public service broadcaster program, Six O’Clock Rock, a programme from the late 1950s and early 1960s that featured an equal mix of jazz and pop/rock during its debut season. This mix was later replaced with a more homogeneous rock and pop schedule; however the question of why jazz was replaced has yet to be addressed.
The reception of jazz in Adelaide and Melbourne and the creation of an Australian sound in the Angry Penguins decade
Authors: Clunies Ross Bruce
Published: June 2015

This article re-examines some of the arguments in ‘An Australian Sound’ (Clunies-Ross 1979) suggesting that jazz in Melbourne and Adelaide in the 1940s was developing distinctive local attributes, before it was swamped by the international revival of traditional jazz. Jazz developed in Adelaide and Melbourne simultaneously with modernism in literature and the visual arts, and was associated with the formation of the Contemporary Art Society in both cities. The poet Max Harris took an interest in jazz and was perhaps responsible for the introductions leading to the first Australian jazz convention, in 1946, which brought the Graeme Bell band and the Southern Jazz Group together. He added jazz sections in his magazine Angry Penguins and its off-shoot, which formed the programme of the first convention. Local jazz experts debated Australian developments in the pages of these magazines, in the context of contributions from New York and London. Australian sounds in jazz culminated in the forty-five original tunes recorded for the ABC by Dave Dallwitz with the second Southern Jazz Group in 1951, and then they faded, until Dallwitz re-emerged as a jazz musician in the 1970s and recorded a lot of original music, including the Ern Malley Suite, which brought him international recognition and confirmed the distinctive qualities of Australian jazz in what is now identified as the ‘traditional’ mode.
‘A tale of five festivals’
Authors: Keogh Brent
Published: June 2015

This paper considers the cultural intermediary function of Australian jazz festivals. It presents a detailed analysis of programming patterns across five Australian Jazz music festivals – namely, the Manly Jazz Festival, Wangaratta Festival of Jazz and Blues, Melbourne International Jazz Festival, Brisbane International Jazz Festival, and Bellingen Jazz Festival – in the ten year period, 2004-2014. Using this data, this paper draws attention to the ‘search and select’ function of cultural intermediaries speaking to the broader significance of festivals as sites of popular music study. This paper considers a number of programming trends, including a comparison between local and international musicians; the frequency with which musicians performed at each festival and across festivals; issues of gender in programming; and identify musicians who could be placed into a number of genre categories, with a particular focus on those musicians who identify in some way with the category of World Music. This study presents an insight into current trends in jazz scenes in Australia and the roles that festivals play as cultural intermediaries in contributing to this aspect of Australian cultural life.
Sex and the sonic smorgasbord
Authors: Galbraith Jane
Published: June 2015

This article looks at how The Necks extend the parameters of the ‘jazz’ piano trio, and what distinguishes them from most other Australian jazz groups. Their fusion of jazz, minimalism, ambient, ‘new music’ and world influences has established a cult following both in Australia and internationally. In some ways their work is an enigma, as its parameters are simultaneously open and restricted. Despite having established certain conventions such as one-hour live sets, subverting any overt ‘virtuoso’ style in favour of a less formalized and more meditative approach, the fascination in their music lies in how they manage to create individual, discrete, original sound works, characterized by a clearly focused, improvised narrative. In this article, I explore how the international achievements of The Necks over a 25 year-plus career have established them as one of the most important and distinctive Australian jazz groups.
Herding Strategies, Dairy Economy and Seasonal Sites in the Southern Alps
Authors: Carrer Francesco
Published: June 2015

This paper investigates one of the main issues of the archaeology of pastoralism in the southern Alps: the decrease of upland archaeological evidence in the late Iron Age (IA) and the Roman period. A novel interpretation is proposed using ethnoarchaeological, ethnographic and ethnohistoric data collected in different areas of the French and Italian Alps. These data document the existence of two pastoral strategies: Alpine pastoralism (focused on dairying activity) and transhumance (mainly focused on the exploitation of wool and primary products of livestock). The sites related to the first strategy are usually permanent and complex, while those related to the second are simple and ephemeral. On the basis of this information, the decrease of upland archaeological evidence during the late IA and the Roman period has been interpreted as a consequence of the decrease of dairy activity and increase of transhumance. These inferences allow us to rethink the evolution of human exploitation of high mountain environments, as well as to tackle the bias of archaeological invisibility in specific pastoral contexts. Furthermore, they also confirm the important role of ethnoarchaeology as a method of improving archaeological interpretation.
Displacement of the Spleen Mimicking Renal Cell Cancer Recurrence Post-Nephrectomy: A Case Report
Authors: Emanuels Carolina S. , Timmerman Krista D. , Aijaz Tabish , Nguyen Thu-Cuc , Jest Nathaniel , Drane Walter E. , Gilbert Scott M. , Crispen Paul L. , Su Li-Ming , Deitte Lori A. , Dang Long H.
Published: June 2015

Local regional recurrence of renal cell cancer post-nephrectomy most often occurs within three years after surgery. Post-nephrectomy, many processes may mimic RCC recurrence. We present the case of a 75 year-old Caucasian male patient with a mass in his renal fossa post-nephrectomy for renal cell cancer, suggesting local recurrence. Use of the technetium-99m sulfur colloid scan showed that the mass was his spleen which had been displaced into the renal fossa. With high index of suspicion, characterization of these processes as splenic in origin would prevent subjecting patients to risks of biopsy or even surgery.