bluuebunny/crossref_metadata_2025 huggingface dataset:
LA AXIOMÁTICA ESTÉTICA: ESQUIZOANÁLISIS Y RIZOMA
Authors: Vaskes Santches Irina
Published: August 2019

El artículo está dedicado a dos conceptos: el esquizoanálisis y el rizoma,introducidos por G. Deleuze y F. Guattari. Su propósito es mostrarlos comocategorías de la estética posmoderna que proporcionan una nueva herramientaconceptual para describir los procesos transcurridos en las prácticasartísticas actuales, que con frecuencia se enuncian bajo la crisis de representación cuestionando la modernidad narrativa y sus imperativos categóricos.Se trata de los conceptos de características similares e intercambiables, quecomplementan uno a otro, pues ambos reflejan un nuevo tipo de relacionesentre el arte contemporáneo y la realidad: no lineales, no estructuralizadas,anti-jerárquicas, heterogéneas, etc. o sea, relaciones rizomaticas basadas enel principio cartográfico, distintas de las relaciones arborescentes en quereside el arte clásico donde predominan los procedimientos de calco.
¿Exige el Realismo Científico un compromiso con la Teoría Correspondentista de la Verdad?
Authors: Flórez Quintero Daian Tatiana
Published: August 2019

En este ensayo me propongo examinar una de las tesis mantenidas por Devitt sobre la naturaleza del realismo científico. En particular, examinaré la tesis de acuerdo con la cual ninguna teoría de la verdad es constitutiva al realismo, por lo que un compromiso con el realismo no nos obliga a suscribirnos a una teoría correspondendista de la verdad. Si ésta tesis fuese correcta, todos los intentos antirrealistas por rebatir las tesis del realismo científico estarían condenadas al fracaso ya que sus objeciones suponen que una de las teorías constitutivas del realismo es la teoría correspondentista de la verdad. Mi intuición es que no es posible emancipar al realismo científico de sus compromisos semánticos con una teoría de la correspondencia. Para defender este punto de vista, mostraré que es poco plausible la tesis de que un realista no tiene que suscribirse a una teoría correspondentista, porque podría adoptar, en su lugar, una teoría redundante de la verdad. Mi intuición es que si el realista se suscribiera a tal teoría, no podría mantener exitosamente ‘la dimensión de independencia’ la cual es, de acuerdo con Devitt, constitutiva del Realismo. Finalmente, señalaré dos resultados indeseables que se derivan de mantener un realismo emancipado de la semántica, entre ellos que no resulta evidente cómo puede un realista de este tipo responder al problema de la elección de teorías, y adicionalmente que no parece posible admitir que hay relaciones causales entre nuestras mentes y el mundo –tal y como Devitt lo sugiere- sin intromisiones de la semántica o sin sucumbir al antirrealismo.
¿Las reglas constitutivas pueden crear una práctica?
Authors: Lorini Guiseppe
Published: August 2019

El autor investiga el papel desarrollado por las reglas constitutivas en la construcción de la realidad social. En particular, niega que, por ejemplo, las reglas constitutivas del ajedrez sean condición suficiente de la práctica llamada juego del ajedrez. Para crear una nueva práctica, se necesita también la existencia de la gramática de esa práctica, o sea el sentido mismo de la práctica (por ejemplo: el sentido de juego). Es la gramática de una práctica (y no las reglas constitutivas) la que determina la naturaleza de la práctica misma. El sentido de una práctica no puede ser creado por las reglas constitutivas.
EL APORTE FILOSÓFICO DE GADAMER Y TAYLOR A LA DEMOCRACIA: ACTITUD DE DIÁLOGO ABIERTO Y RECONOCIMIENTO RECÍPROCO
Authors: Cuchumbé Holguín Nelson Jair
Published: August 2019

El problema del diálogo entre interlocutores con distintas expresionesculturales es una de las difi cultades más notables que afrontan las actualessociedades democráticas. En el presente artículo se aborda dicho problemaen clave de los aportes fi losófi cos de Hans Georg Gadamer y Charles Taylor.Se plantea como pregunta central: ¿qué actitudes ameritan promover losinterlocutores con tradiciones culturales incompatibles para la construcciónde unidad política democrática y pluricultural? Se acoge como principiode argumentación la idea de que diálogo abierto y reconocimiento mutuoson dos actitudes ineludibles de cualquier intento sano por construir unidadpolítica democrática y pluricultural.
LA MISTERIOSA VIDA DE LA POTENCIA. LA IMPORTANCIA DEL CONCEPTO DE “POTENCIA” PARA LA FORMULACIÓN AGAMBENIANA DEL CONCEPTO DE VIDA
Authors: Fleisner Paula
Published: August 2019

El presente trabajo ofrece un análisis de una serie de artículos de GiorgioAgamben en los que se presenta una lectura del problema de la dynamis queresulta fundamental para comprender no sólo su posterior participación engran parte de los debates filosófico-políticos sino también las implicanciasconceptuales del concepto de “vida” en el marco de su filosofía. Se evalúa,en primer lugar, la lectura del tópico aristotélico del intelecto pasivo a la luzde la interpretación del averroísmo latino y las consecuencias que Agambenextrae para el pensamiento y la política. Y se construye, en segundo lugar,una interpretación de lo que llamaremos una “vida potencial”, uno de cuyosejemplos eminentes será “Bartleby”, figura literaria de la potencia que seperfila como una de los modos posibles de la resistencia política.
LA TEORÍA DE LOS NOMBRES Y EL REALISMO METAFÍSICO
Authors: Colomina Almiñana Juan José , Raga Rosaleny Vicente
Published: August 2019

En el presente escrito, los autores pretenden una nueva interpretación de las principales tesis de la más conocida obra de Kripke, Naming and Necessity. Se atiende a las nociones de a priori (y de necesidad) y a posteriori (y contingencia), la noción de designador rígido (con su explícita crítica a la teoría descriptivista fregeana de los nombres) y su revisión de los conceptos metafísicos de modalidad de dicto y modalidad de re. Más tarde, se definirá mínimamente la noción de realismo y se intentará situar a Kripke en el tipo que más cómodamente se adapte a sus presupuestos teóricos de carácter ordinario. Todo ello permitirá situar la teoría kripkeana de los nombres dentro de un marco realista que posibilitará, en otro momento ulterior, formular ciertas críticas a esta Teoría Causal de la Referencia y al realismo metafísico a ella asociada.
DELEUZE LECTOR DE PLATÓN
Authors: Sonna Valeria
Published: August 2019

Gilles Deleuze describe la tarea del “renversement du platonisme” como la búsqueda de su motivación. El propósito de la Teoría de las Ideas y del método dialéctico es una “voluntad de seleccionar” que responde a lo que Deleuze identifica como el problema platónico, la “selección de pretendientes”. En este escenario, las Ideas funcionan como criterio de la selección y la dialéctica es el procedimiento por el cual Platón produce la diferencia entre los objetos a seleccionar. Deleuze usa el concepto de “simulacro” para pensar la inversión porque encuentra en él una anulación de la posibilidad misma de la Idea como fundamento. Sin embargo, este concepto tiene un desarrollo muy acotado en los diálogos platónicos. Es, en rigor, sólo en el Sofista que Platón lo desarrolla. En el presente trabajo indagaremos en el uso que hace Deleuze del texto del Sofista y del concepto platónico de “simulacro” con el fin de determinar que su operación de lectura debe ser pensada en términos de una sintomatología.
Caracterizando el desacuerdo lógico
Authors: Tajer Diego
Published: August 2019

En este artículo, ofrezco una caracterización del desacuerdo lógico. Segúnmi noción, los desacuerdos meramente verbales en lógica son inusuales.La mayoría de los desacuerdos lógicos son simplemente desacuerdosdescriptivos sobre el mundo o sobre el significado de los conectivos, mientrasque otros son desacuerdos evaluativos sobre la noción de validez.
El aristotelismo de Giovanni Pico della Mirandola y la concordia entre Platón y Aristóteles
Authors: Rodríguez Teresa
Published: August 2019

En este trabajo sostengo que el programa de la concordia entre Platón y Aristóteles que Pico della Mirandola desarrolla es una buena herramienta para entender, no sólo su relación con el platonismo, sino su aristotelismo. Para ello, (1) presento las aproximaciones recientes sobre el tema de la concordia entre Platón y Aristóteles en los trabajos de Pico; (2) analizo la forma en que se puede hablar del aristotelismo de Pico desde un enfoque recepcional; (3) presento el programa de la concordia entre Platón y Aristóteles en la Antigüedad Tardúa y su recepción piquiana. Concluyo que el aristotelismo de Pico puede ser caracterizado como una actitud explícita de valoración positiva y como un uso de sus tesis para defender la concordia frente a los platónicos.
Electroquímica de Oro en Ácido Clorhídrico
Authors: Abadía López Julieth , Pérez Valdés Claudia L. , Grajales Tamayo Mario
Published: August 2019

Se investigó la electroquímica del oro en soluciones clorhídricas ácidas usando voltamperometría cíclica y voltamperometría de redisolución anódica. Los resultados demostraron que la disolución del oro y la formación de óxidos de oro ocurren a potenciales por encima de +0.9 V (vs. Ag / AgCl )• La reducción de AuCl4 sobre electrodo de grafito pirolítico rugoso (RPG) procede con adsorción lenta y mostró un pico bien definido a +0.55 V; este pico presentó una pobre resolución con electrodos de platino y carbono vitreo. La HAuCl4 H^PdC^ y HAUCI4 0.45 V durante cuatro minutos (tres de agitación más uno de reposo) y redisolviendo con un barrido lineal desde +0.0 hasta+1.15 V a H2PdCl4 HAuCl4 a-0.28 V, se depositan simultáneamente Au, Pd y una aleación Au-Pd. A 0.45 V únicamente se deposita Au. La voltamperometría de redisolución anódica fue aplicada con buenos resultados a la determinación de oro en lixiviados clorhídricos provenientes de la precipitación de platino como (NH4)2PtCl6.
Aspectos anatómicos de Pulvínulo y nervio principal foliar de cinco especies del género Canavalia de Colombia, Dioclea Guianensis y Mucuna Pruriens
Authors: Vélez Escobar María Catalina
Published: August 2019

Se realizó un estudio de la anatomía de pulvínulo y nervio principal foliar de Canavalia bicarinata, C. brasiliensis, C. dictyota, C. ensiformis, C. rosea, Dioclea guianensis y Mucuna pruriens (Fabaceae, Faboideae). Se comparó las distintas especies del género Canavalia y éstas al género Dioclea, de la misma subtribu; y Mucuna, de la subtribu Erythrininae, de plantas obtenidas de semillas del Banco de Germoplasma del CIAT (Centro Internacional de Agricultura Tropical) en estadío adulto reproductivo, sembradas en condiciones de la Microestación de Biología, Universidad del Valle, Municipio de Cali, Valle del Cauca - Colombia, cerca de 1.050 m. Las técnicas de laboratorio comprendieron cortes transversales histológicos a mano alzada, tinción con safranina y fast green; con el método semiconservativo y observaciones en microscopio compuesto. Se realizaron observaciones y comparaciones a la forma y composición del contorno externo, luego la forma de la célula y su distribución en los tejidos en epidermis, corteza, cilindro central y médula; se incluye además, la presencia o no, abundancia, forma de tricomas, pigmentos u otras substancias tales como taninos, estilodios, aceites y para el nervio principal se analiza la distancia de láminas foliolares.
Composición y distribución de los ordenes Ephemeroptera, Plecoptera y Trichoptera (Insecta) en rios de la Sierra Nevada de Santa Marta, Colombia
Authors: Rúa García Gustavo , Tamaris Turizo César , Zúñiga María Del Carmen
Published: August 2019

Cuatro ríos localizados en diferentes flancos de la Sierra Nevada de Santa Marta (SNSM) fueron analizados para conocer la composición y distribución de los estados  inmaduros de los órdenes Ephemeroptera, Plecoptera y Trichoptera (EPT). Los rios Gaira, Tucurinca, Guatapuri y Rancherias, se evaluaron entre junio de 2009 y noviembre de 2010, con énfasis en su parte media y las relaciones entre la entomofauna y parámetros bióticos y abióticos.
Holografía
Authors: Valero Michel
Published: August 2019

Se presenta aquí una teoría física y analítica sencilla de la holografía plana. So Introducen las n ocio nos de la fotografía de volumen, la acústica y la generada por computadora. Se muestra también un montaje práctico y algunas aplicaciones en los campos do la interferometría. do ios dispositivos de memoria y en la fotografía, cine y televisión tridimensionales.
APLICACION DE UN MODELO DE CRECIMIENTO EN BIOLOGIA
Authors: Rodríguez Jorge
Published: August 2019

En este artículo se presenta la deducción matemática  de la ecuación de crecimiento Von Bertalanfy junto con su interpretación biológica y  se aplica al crecimiento en longitud del arenque del Pacifico (Clupea Pullnaii), utilizando los métodos de Gulland Volt y Von Bertalanfy  para la estimación de los parámetros, I , k y t0
REACCIONES TERMICA Y CATALITICA DE ARILCICLOPROPENO-3,3-DICARBOXILATOS DE DIALQUILO
Authors: Paredes. Rodrigo , Garcia Carlos M.
Published: August 2019

Se encontró que en la termólisis de soluciones diluidas de fenilciclopropeno-3,3 dicarboxilatos de dialquilo no se genera ningún producto mientras que en la termósis de soluciones concentradas de estos compuestos se generan dimeros. Estos dímeros se derivan de intermediarios dirradicales generados por rompimiento
Método Experimental para Medir Resistividad a Altas Temperaturas en Cerámicas Superconductoras
Authors: Bohórquez G. Alberto , Prieto S. Hidalgo , Stouvenel Pablo , Valderrama N. Jaime
Published: August 2019

En este trabajo se presentó un método para medir resistividad eléctrica en cerámicas superconductoras desde temperatura ambíente hasta 1000°C. Esta técnica permite observar "in situ" el comportamiento de la resistividad que refleja, entre muchos otros aspectos, la incorporación de oxígeno en la muestra, efecto que será analizado en el presente trabajo.
A Growth Functional Equation
Authors: Rodríguez B. Carlos Julio , Rodríguez B. Jorge
Published: August 2019

We state a growth functional equation related with the Von Bertalanffy physiological differential equation
Effects of orthodontic teeth movement on dental pulp: a review
Authors: Rodriguez Carolina , Vanin Dora
Published: August 2019

Summary: Orthodonticdental movement is the result of physic and mechanic forces applicated on teeth. These kinds ofmovements produce biologic effects in the cell and extra-cellular environment. Mice orthodonticexperimental tooth movements can produce dynamic changes on nervous fibers and pulp blood vesseldensity which are correspondent with the change sequence observed on periodontal membrane andperiodontal bone. Within pulpar tissue an inflammatory answer may be found which can generate cellchanges, basically related to odontoblastos and its environment , but also blood vessel changes thatcan be appreciated through the Doppler flujometry by which its possible to establish the pulp bloodflux on stressed and neurological affected human teeth on which it is possible to observe liberationof the neuropéptidos responsible of tissues pain related by some patients after an orthodonticapparatus activation. Key words: Dental pulp. Orthodontic movement consequences. Bucofacialpain.
Mixed dentition Morphology characteristics: a correlation between 3 non-metric dental traits in temporal and permanent dentition in scholars from Cali - Colombia
Authors: Aguirre Luisa , Castillo Diana , Solarte Diana , Moyano Martha , Moreno Freddy
Published: August 2019

Summary: Objectives: Determine the correlation of the frequency and variability of three Non-metricdental crown traits (Carabelli cusp, protostylid and molar pattern cusp) between deciduous (um2/lm2)and permanent (UM1/LM1) teeth in mixed-dentition subjects. Materials and methods: A descriptivestudy was conducted to determine the dental morphology in mixed dentition stage of young subjects.The Arizona State University Dental Anthropology System ASUDAS and Grind and Sciulli Methods wereused as reference to compare frequency of dental traits in dental casts of 100 young individualsracially mixed. Results: A high expression of furrows and pits of the Carabelli cusp, a highfrequency of protostylid in degree 1 (foramen secum) and a expression of molar pattern cusp,revealed that the studied population received influences of the Mongoloid and Caucasoid dentalcomplexes. Correspondence on the traits expression among temporal and permanent dentition was alsoconfirmed. Bilateral symmetry and sexual dimorphism in the analyzed non-metric dental crown traitswere found. Key words: Dental anthropology. Dental morphology. Non-metric dental crown traits. Mixeddentition.
Tests of biocompatibility for dental materials. Review of the literature
Authors: Villegas Ángela , Naranjo Everaldo , Gómez Diana
Published: August 2019

Summary: The purpose ofthis article is to present a review of different investigation approaches to evaluate thebiocompatibility of dental materials. A search was conducted among the investigators in this fieldin order to define the test methods applied to evaluate dental materials. The described stages foreach test are found in the literature used to evaluate the biocompatibility of different materialsused in dental practice. At the end of this review it can be concluded that compliance with researchprotocols and results obtained on biocompatibility of these studies provide confidence for the useof various dental materials. Key words: Dental materials. Biocompatiblity. Citotoxicity. Dentalpulp.
Bioethics from an odontological perspective
Authors: Castillo Desiree , Guerra Amarilis
Published: August 2019

Summary: Bioethics is the systematic and extensive study of humanbehavior in the field of life and health sciences, in view of the values and moral principles.Bioethical reflexion has a great importance in the formation of the dentist, both in theappropriation of values and in creating consciousness on the implementation of biosafety standards.In Colombia, in 1989 a Code of Ethics was created and ruled for dental profession by Law 35, whichestablished standards, principles and ethical obligations to govern the professional exercise fordentists. In dental practice, there is a high possibility of infection because the mouth is thenormal habitat of numerous different species of microorganisms that are present when the dentistscarry out their treatments. Dentistry is not a medium, but it is a goal. This means that we help tothe realization of the other, by reestablishing a proper smile and listening and guiding ourpatients. The transcendent value of the profession of dentistry is to understand that each personhas a single and particular project of life. Our responsibility is to contribute with this projectgiving an adequate Oral Health Care and helping our patients to achieve a happy life. Bioethics isuseful to create consciousness that any dental practice can positively or negatively affect thepatient. Key words: Bioethics. Odontolgy. Axiollogy and values.
Personal Credo
Authors: Barreto José Fernando
Published: August 2019

Creo en la energía universal Única y eterna que vive en mí Creo en el espíritu de la libertad La fraternidad y la igualdad
Creo en mi propio destino Que fabrico día a día Con tesón y con porfía Desde la eternidad de mi evolución
Creo en la misión que me he impuesto Desde mis vidas anteriores Y que tiene que ver con el bienestar De todos mis congéneres.
Creo en la luz de la Inteligencia Suprema Que vive en mi intelecto, en mi voluntad, En la compresión de cuanto me rodea Y en la realización constante de mi realidad. Creo en la presencia constante de mi creador en Mí, Creo en la Justa Ley que aplico siempre En todos mis deseos y en mis acciones y, así Me envuelve en su realización perenne.
Creo en la fuerza de todos mis actos. Creo en la verdad que sin esfuerzo me conduce A la Eterna Libertad mas absoluta, sin reparos, Y a la tranquila vida que, sutil, produce.
Creo en la reintegración de mi humana esencia Con la esencia amante y amada de Dios en Mi, Puerta perennemente abierta a la existencia Porque soy hijo del Creador y Él siempre esta aquí.
Risk Factors associated to BURNOUT Sindrome in dentistry students from University of Valle
Authors: Calvache Sorany , Chazatar Lizeth , Jiménez Eliana , Quiñónes Rosario , Galvis Milena , Moreno Sandra
Published: August 2019

SUMMARYObjective: To determine the risk factorspredisposing to burnout syndrome instudents from Dentistry Program at theUniversity of Valle.Materials and Methods: In this cross-sectional study were enrolled 90 studentsin the period from February to June 2012in the academic program of Dentistry fromthe Universidad del Valle, who attend third,fourth and fifth year. The test Maslach BurnoutInventory (MBI) was applied whichconsists of 22 items with 7 response optionscorresponding to three basic dimensions ofburnout syndrome, emotional exhaustion(AE), depersonalization (D) and reducedpersonal or professional accomplishment(BR). Chi2 test were run for each of thefactors and Kruscal Wallis and ANOVAwere also applied.Results: The fifth graders scored an averageof 5.60 on a scale of depersonalization(D), which was statistically significant,indicating that there is a risk factor presentin this group of students. In this dimensionof depersonalization, values were lowerfor levels 1, 2, 3 and 6 but there was nostatistically significant differences betweenthem. Given the sub-scale of emotionalexhaustion (AE) the highest values wereassociated with socio-economic levels 3,4 and 5.Conclusions: Our results show that the academicload can be a predisposing factor thatimpacts mainly on the depersonalizationand manifests itself at the end of college.Socioeconomic variables, family environment,age, or spend a certain semesterdo not constitute specific risk factors fordevelopment of the syndrome.
Key words: Burnout syndrome, emotionalexhaustion, depersonalization, personalaccomplishment.
Vertebral bone maturation in children 8 -14 year-old at orthodontic clinics of University Colleges of Colombia (UNICOC) based in Cali
Authors: Bedoya Antonio , Gallego Mónica , Pamplona Shirley , Soto Natalia , Bermudez Paula , Tamayo Julián-Andrés
Published: August 2019

Objective: Determine the stages of vertebral bone maturation in children 8-14 year-old belonging to Colombian mestizo population at the Valle del Cauca.
Materials and methods: Cervical bone maturation is an effective method to determine the pubertal growth spurting children, this allows to evaluate the ideal time to iniciate orthodontic or orthopedic treatment. In 130 lateral radiographs beloning to children 8 to14 year-old from records of the graduate orthodontic clinic of the university colleges of Cali Colombia were analized using cervical bone maturation according to the Baccetti modified method.
Results: We found that children in this age range had their pubertal growth spurt at 12to 14 year of age.
Conclusion: The cervical bone maturation stage (CVS3) corresponding to the pubertal growth peak in the age group12 to14 yearold is reached first by the girls.
 
Key words: Vertebrae cervical, orthodontics, radiography, cervical bone maturation.
Methods for determining the biocompatibility of dental materials
Authors: Ríos Valentina , Romero Natali , Valencia Carlos , Balanta Julián
Published: August 2019

Background: The dental materials are subjected to various tests for consistency, bioactivity, and demonstrate that they can remain in the oral environment without producing an adverse response. Currently for this purpose worldwide are employed different techniques such as cell culture, techniques of molecular biology and the use of shrimp larvae (brineshrimplarvae) better known as Artemia salina.
Objective: Characterize five dental materials using a cytotoxicity test with larval shrimp Artemia salina. Materials and methods: A cytotoxicity study was performed on samples of Titanium Type IV, Silicone Heavy, Auto-cured acrylic resin and photo-curing and Eugenolatousing the method of Artemia salina.
Results: The cytotoxicity assay for Artemia Salina showed no viability foreugenolato because all the larvaes were eliminated, and other products showed biocompatibility in the following percentages. Titanium type IV 100%, the silicone 46%, acrylic 62% and resin 72%.
Conclusions: The method of brine shrimp is a simple and economical method for studies of cytotoxicity, requires greater infrastructure technology, and combined with other techniques of cell biology can become as specific method as desired. There is viability for the artemiasalina larvae with type IV titanium of 100% and with eugenolato of 0%.
Caries prevalence and COP rate in a school population of 12 years at the municipality of Copacabana 2013-2014
Authors: Osorio Jhon
Published: August 2019

Objective: Calculate the prevalence of caries and related factors in schoolchildren from 12 years in the municipality of Copacabana. Materials and methods: Cross sectional study, with a sample of 483 adolescents. Sociodemographic and practice in oral health variables were evaluated. Oral and evaluation DMF index according to the recommendations of the Ministry of Health was conducted. Univariate, bivariate analysis and OR calculation was performed. Results: 51% were men, 77.8% live in urban areas, 56.5% belong to stratum 2 and 63.6% belong to the contributory scheme. 41.8% change the toohtbrush every 30 days. 81.4% use dental floss with occasional use by 41.6% of students. Caries prevalence was higher in men with 53.6%, in rural área with 60.5%, in stratum 1 with 65.4% and subsidized scheme with 57.2%. The traditional DMF index was 1.26 and the modified was 0.99. The urban area of residence (OR 0.59 IC95% 0.38 to 0.92) and frequency upshift toohtbrush at 90 days (OR 0.54 IC95% 0.30 to 0.97) were identified as protective factors. Conclusion: Adolescents from the town of Copacabana present a lower prevalence in caries experience, as well as a traditional and modified DMF index lower than that reported by other studies. The importance of strengthening oral health habits such as flossing, control sugar intake and regular visits to the dentist is highlighted.
Facial mask and Meaw technique in a class III patient managing. Case report
Authors: Quintana Rubén , Díaz Luis-Fernando , Bedoya Antonio
Published: August 2019

The management of Class III malocclusion involves several considerations to be taken at the time of making therapeutic decisions, such as age, sex, the technique used, general conditions of the patient, collaboration and aesthetic requirements. This is a malocclusion that demands quick and effective action to ensure aesthetic and functional conditions as a priority. This report presents a case of a 14 years with a skeletal Class III malocclusion treated initially with facial mask and Mc .Namara breaker, in order to make a posteroanterior protraction of the maxilla and the mandible sagital control, then continue with the technique of MEAW multi-ansas, thus achieves a dentoalveolar compensation and better occlusal adjustment.
Efectos de la ortopedia funcional de los maxilares sobre las dimensiones de los arcos dentales en pacientes con mordida profunda en dentición primaria
Authors: Cardozo María-Alejandra , Martínez José-Manuel , Molina Natalia , Hernández Jesús-Alberto
Published: August 2019

Introducción: El sistema cráneo-cervicomandibular necesita de factores genéticos, ambientales y funcionales para su desarrollo. La ausencia de estímulos funcionales genera alteración en el crecimiento y mal oclusiones.
Objetivo: Evaluar los cambios en las dimensiones de los arcos en pacientes con dentición primaria y mordida profunda entre 3 y 5 años, como resultado del tratamiento temprano con ortopedia funcional.Materiales y Métodos: Muestra de 20 niños, entre 3 y 5 años de edad, con dentición decidua completa, mordida profunda, arcos estrechos y relación molar con plano terminal recto o escalón distal, que acudieron a la Universidad del Valle. Se midió en modelos en yeso: Longitud, ancho intercanino, ancho intermolar, perímetro, overbite y overjet. Posteriormente a todos los pacientes se les colocaron pistas directas dePlanas elaboradas de forma indirecta, se les realizó desgaste selectivo y reorientación masticatoria. Pasados 6 meses de tratamiento se realizaron las segundas mediciones.Resultados: En promedio el Overbite inicial de los participantes fue de 87,95%. Se encontró que el Overbite final de los pacientes fue en promedio del 25%. Se encontró diferencias entre los dos tiempos de medición para todas las variables, aunque para el perímetro superior no fueron estadísticamente significativas. La longitud superior y el ancho intermolar tuvieron el mayor porcentaje de cambio.Conclusiones: Las pistas directas de Planas contribuyen a cambios significativos en las dimensiones de los arcos dentales, cuando se implementa como tratamiento temprano para la mordida profunda y/o distoclusiónen la dentición decidua.
Kontribusi Cultural Intelligence Terhadap Job Performance yang Dimediasi Job Satisfaction Pada Karyawan Ekspatriat
Authors: Thomas Denis Intan , Anggiani Sarfilianty
Published: August 2019

AbstrakTujuan – Penelitian ini bertujuan untuk menguji dan menganalisis pengaruh yang dirasakan cultural intellegence terhadap job performance dimediasi job satisfaction karyawan.Desain/Metodologi/Pendekatan: Data diperoleh dari hasil kuesioner yang dibagikan kepada 21 karyawan ekspatriat dari Target Sourcing Services. Metode yang digunakan adalah sensus dimana semua populasi sebanyak 21 karyawan. Alat analisis yang digunakan untuk menguji hipotesis adalah regresi bergandaHasil - Hasil penelitian ini menunjukkan bahwa ada pengaruh cultural intellegence terhadap job satisfaction. Tidak ada pengaruh job satisfaction terhadap job performance. Tidak ada pengaruh dalam cultural intellegence terhadap job performace yang dimediasi oleh job satisfaction. AbstractPurpose –This study aims to examine and analyze the influence of cultural intellegence practices to job performance mediated by job satisfaction.Design/Methodology/Approach: Data obtained from the results of questionnaires distributed to 21 expatriate employee of Target Sourcing Services. The method used is census where all the population as many as 21 employee. The analytical tool used to test the hypothesis is multiple regression.Finding -:The results of this study show that. There is influence of cultural intelligence to job satisfaction. there is not influence of job satisfaction to job performance. There is not influence in cultural intelligence to job performance mediated by job satisfaction
БІОЛОГІЧНЕ ОЧИЩЕННЯ ВОДНИХ ОБ’ЄКТІВ ВІД 137Cs
Authors: Mikheyev O. M. , Lapan O. V. , Madzhd S. M.
Published: August 2019

A mobile bio plateau design has been developed for water’s bodies purification from radionuclides. To construct bio plateau chemically inert floating material was used as the substrate granular foam on top of which the seeds of higher terrestrial plants were placed. Constructed bio plateau on the 9th day of incubation were placed into tanks with a solution of 137Cs to study the cleaning efficiency of terrestrial plants to the aquatic environment. Once a day, the solution of 137Cs was poured into Marinelli's vessel to determine the specific activity of the radionuclide using a gamma spectrometer. A comparative study of the cleaning efficiency of terrestrial plants of the aquatic environment on the example of 137Cs ions has been carried out. The results of mathematical modeling of the dynamics of accumulation of radioactive cesium in the “experimental reservoir – bio plateau” system was presented.
A General Techno-Economic Model for Evaluating Emerging Electrolytic Processes
Authors: Orella Michael , Brown Steven M. , Leonard McLain , Román-Leshkov Yuriy , Brushett Fikile
Published: August 2019

Increasing societal concern about carbon emissions and the concomitant emergence of inexpensive renewable resources provide growing impetus for the electrification of the chemical industry. While there have been notable recent advances in the science and engineering of electrolytic processes, there are comparatively few engineering economic studies that outline the technical specifications needed to approach feasibility. Here we introduce an open-source techno-economic framework to connect system performance and price goals to the constituent materials property sets with a goal of quantifying the economic potential of existing and conceptual electrolytic processes. To validate the outputs and demonstrate the versatility of this toolkit, we explore three contemporary electrolyses of varying technology readiness levels. Specifically, we first benchmark our model results against the Department of Energy hydrogen analysis model, then evaluate the impact of mass transport and catalyst performance on the electrochemical reduction of carbon dioxide, and chart a pathway to low-cost electrolytic production of phenol from guaiacol. As this model is based on generalized mass balances and electrochemical equations common to a number of electrochemical processes, it serves as an adaptable toolkit for researchers to evaluate new chemistries and reactor configurations as well as to back-translate system targets to interdependent materials-level property requirements.
Mechanisms of Alkene and Diene Hydrogenation Reactions in H-MFI and H-CHA Zeolite Frameworks During MTO
Authors: DeLuca Mykela , Janes Christina , Hibbitts David
Published: August 2019

Co-feeding H2 at high pressures increases zeolite catalyst lifetimes during methanol-to-olefin (MTO) reactions while maintaining high alkene-to-alkane ratios; however, the mechanisms and species hydrogenated by H2 co-feeds to prevent catalyst deactivation remain unknown. This study uses periodic density functional theory (DFT) to examine hydrogenation mechanisms of MTO product C2–C4 alkenes, as well as species related to the deactivation of MTO catalysts such as C4 and C6 dienes, benzene, and formaldehyde in H-MFI and H-CHA zeolite catalysts. Results show that dienes and formaldehyde are selectively hydrogenated in both frameworks at MTO conditions because their hydrogenation transition states proceed via allylic and oxocarbenium cations which are more stable than alkylcarbenium ions which mediate alkene hydrogenation. Diene hydrogenation is further stabilized by protonation and hydridation at α,δ positioned C-atoms to form 2-butene from butadiene and 3-hexene from hexadiene as primary hydrogenation products. This α,δ-hydrogenation directly leads to selective hydrogenation of dienes; pathways which hydrogenate dienes at the α,β-position (e.g., forming 1-butene from butadiene) proceed with barriers 20 kJ mol-1 higher than α,δ-hydrogenation and with barriers nearly equivalent to butene hydrogenation, despite α,β-hydrogenation of butadiene also occurring through allylic carbocations. Hydrogenation of formaldehyde, a diene precursor, occurs with barriers that are within 15 kJ mol-1 of diene hydrogenation barriers, indicating that it may also contribute to increasing catalyst lifetimes by preventing diene formation. Benzene, in contrast to dienes and formaldehyde, is hydrogenated with higher barriers than C2–C4 alkenes despite proceeding via stable benzenium cations because of the thermodynamic instability of the product which has lost aromaticity. Carbocation stabilities predict the relative rates of alkene hydrogenation and in some cases shed insights into the hydrogenation of benzene, dienes, and formaldehyde, but cation stabilities alone cannot account for the poor hydrogenation of benzene or the facile hydrogenation of dienes, boosted by stabilization conferred by a,δ-hydrogenation. This work suggests that the main mechanisms of catalyst lifetime improvement with high H2 co-feeds is reduction of diene concentrations through both their selective hydrogenation and hydrogenation of their precursors to prevent formation of deactivating polyaromatic species.
Intermolecular sp3-C–H Amination for the Synthesis of Saturated Azacycles
Authors: Betz Kerry , Chiappini Nicholas , Du Bois Justin
Published: August 2019

The preparation of substituted azetidines and larger-ring, nitrogen-containing saturated heterocycles is enabled through efficient and selective intermolecular sp3-C–H amination of alkyl bromide derivatives. A range of substrates is demonstrated to undergo C–H amination and subsequent sulfamate alkylation in good to excellent yield. N-Phenoxysulfonyl-protected products can be unmasked under neutral or mild basic conditions to yield the corresponding cyclic 2° amines. The preparative convenience of this protocol is demonstrated through gram-scale and telescoped multi-step procedures. Application of this technology is highlighted in a nine step total synthesis of an unusual azetidine-containing natural product, penaresidin B.
Multitask Prediction of Site Selectivity in Aromatic C-H Functionalization Reactions
Authors: Struble Thomas J. , Coley Connor W. , Jensen Klavs F.
Published: August 2019

Aromatic C-H functionalization reactions are an important part of the synthetic chemistry toolbox. Accurate prediction of site selectivity can be crucial for prioritizing target compounds and synthetic routes in both drug discovery and process chemistry. However, selectivity may be highly dependent on subtle electronic and steric features of the substrate. We report a generalizable approach to prediction of site selectivity that is accomplished using a graph-convolutional neural network for the multitask prediction of 123 C-H functionalization tasks. In an 80/10/10 training/validation/testing pseudo-time split of about 58,000 aromatic C-H functionalization reactions from the Reaxys database, the model achieves a mean reciprocal rank of 92%. Once trained, inference requires approximately 200 ms per compound to provide quantitative likelihood scores for each task. This approach and model allow a chemist to quickly determine which C-H functionalization reactions-if any-might proceed with high selectivity.
Fluoride Migration Catalysis Enables Simple, Stereoselective, and Iterative Glycosylation
Authors: Sati Girish , Martin Joshua , Xu Yishu , Malakar Tanmay , Zimmerman Paul M. , Montgomery John
Published: August 2019

Challenges in the assembly of glycosidic bonds pose a bottleneck in enabling the remarkable promise of advances in the glycosciences. We report a strategy that applies unique features of electrophilic boron catalysts in addressing current limitations of methods in glycoside synthesis. The strategy utilizes glycosyl fluoride donors and silyl ether acceptors while tolerating the Lewis basic environment found in carbohydrates. The method allows a simple setup at room temperature while utilizing catalyst loadings as low as 0.5 mol %, and air- and moisture stable forms of the catalyst are found to be effective. These characteristics enable a wide array of glycosylation patterns to be accessed, including all four C1-C2 stereorelationships, and the method allows one-pot, iterative glycosylations to generate oligosaccharides directly from monosaccharide building blocks.
Estudo, características Post mortem e possíveis medidas de prevenção na ocorrência dos casos de amiloidose hepática em equinos utilizados para produção de soros hiperimune
Authors: Mota Renan Guilherme , Nascimento Eudes Esteves do
Published: August 2019

A produção de soros hiperimunes compõe parte fundamental no combate e tratamento à doenças causadas por toxinas e venenos produzidos por vírus, bactérias ou animais peçonhentos. Geralmente utiliza-se a espécie equina (Equus caballos) pela docilidade e alta capacidade de produção de soro. Dentro da rotina produtiva existem fatores de nutrição e manejo que quando somados à alta estimulação antigênica podem levar à ocorrência de quadros de amiloidose. O caso relatado descreve os sinais post-mortem encontrados em um equino macho, adulto, e com causa-mortis vinculada à ruptura de lobos hepáticos acometidos pela deposição amiloide, promovendo hemorragia intra-abdominal. Foram adotadas algumas medidas relacionadas a dieta e manejo dos animais dentro da propriedade, almejando auxiliar na manutenção e avaliação da saúde, recuperação física e hematológica pós-sangria e até mesmo no rendimento e controle da produção de anticorpos por mL de soro. Os quadros relacionados à amiloidose são raros e normalmente sem a presença de sinais clínicos, sendo a monitoração frequente para detecção precoce de problemas e avaliação da saúde, uma boa alternativa para controle da produção e do bem-estar animal.
Competência oocitária: importância e fatores determinantes in vivo e in vitro
Authors: Crocomo Letícia Ferrari , Landim-Alvarenga Fernanda Da Cruz , Bicudo Sony Dimas
Published: August 2019

As biotécnicas reprodutivas impulsionaram a pecuária no cenário do agronegócio mundial em virtude da redução do intervalo entre gerações, acelerado ganho genético e intensificação da produtividade. Nesse âmbito, existem, no entanto, desafios biológicos e fisiológicos que, apesar do avanço científico e biotecnológico, ainda não foram solucionados. A superovulação associada à aspiração folicular e a produção in vitro de embriões a partir de complexos cumulus-oócitos (COCs) que, outrora, entrariam em atresia, tem sua eficiência limitada, basicamente, pela qualidade oocitária, a qual está diretamente relacionada à competência do oócito em completar sua capacitação, representada pela maturação nuclear e citoplasmática, além de suportar a fertilização e embriogênese inicial. Esse processo de capacitação oocitária, tanto in vivo quanto in vitro, determina, portanto, o potencial de desenvolvimento embrionário e envolve uma complexa interação de moléculas regulatórias além de alterações moleculares e estruturais, os quais estão, ainda, sob a influência de fatores intra e extra-ovarianos. Sendo assim, dada a importância do oócito para fertilidade da fêmea, a presente revisão tem como intuito discutir os principais aspectos implicados no contexto da capacitação oocitária e seus fatores interferentes assim como apresentar possíveis métodos de seleção de COCs competentes.
Estabilidade oxidativa da carne e derivados cárneos com o uso de antioxidantes naturais ou sintéticos em artigos publicados na base de dados da Scielo: revisão de literatura
Authors: Paschoal Eliane Cuaglio , Beltrami José Matheus , Santos Isabela Carvalho dos , Germano Ricardo De Melo , Soares Andréia Assunção , Dias Jaciele Caroline Pereira , Almada André Felipe Berto , Sá Thaís Camaso de , Gonçalves Daniela Dib , Otutumi Luciana Kazue
Published: August 2019

A estabilidade e a qualidade de um alimento armazenado por um período prolongado requerem o uso de antioxidantes tanto sintéticos quanto naturais. No entanto, devido à crescente preocupação em adquirir hábitos alimentares saudáveis e o interesse em consumir produtos alimentícios sem uso de aditivos sintéticos, tornase necessária a pesquisa de fontes de antioxidantes naturais, tendo em vista que a carne é um alimento altamente susceptível à oxidação lipídica em função do teor de ácidos graxos insaturados na sua composição. Sendo assim, o objetivo deste trabalho foi realizar um levantamento de artigos publicados na base de dados da Scielo relacionados ao uso de antioxidantes naturais e sintéticos na carne ou derivados cárneos ou adicionados ração consumida pelos animais. Como estratégia de pesquisa dos dados, utilizou-se as seguintes palavras-chave: “carne e TBARS”, “meat and TBARS”, “carne e antioxidante”, “meat and antioxidant”. No total foram identificados 71 artigos oriundos do Brasil, África do Sul, Colômbia, Espanha, Chile, Cuba e Venezuela. No entanto, somente 12 artigos foram analisados, visto que o estudo focou em trabalhos que tivessem sido desenvolvidos com o uso de antioxidantes na carne ou ração dos animais. A utilização de antioxidantes proporciona na sua grande maioria uma melhor estabilidade das propriedades funcionais da carne e seus derivados por meio da diminuição da peroxidação lipídica, promovendo maior tempo de prateleira da carne. No entanto, atenção deve ser dada à legislação que regulamenta o uso dos antioxidantes conforme as suas concentrações limites, permitindo o controle dos processos oxidativos sem comprometer a segurança alimentar.
Mozart’s Sonata for Two Pianos K448 in D-Major 2nd Movement Improves Short-Term Memory and Concentration
Authors: Limyati Yenni , Wahyudianingsih Roro , Maharani Revy D , Christabella Maria T
Published: August 2019

Rhythm, melody, and high frequencies in Mozart’s music are capable to stimulate creativity and motivation regions of the brain and activate brain’s areas, especially the prefrontal area of the brain, which contributes to short-term memory. Listening to Mozart ‘s music can enhance concentration because it stimulates alpha brain waves which induce relaxation and peaceful mood. The objectives of this study were to determine the Mozart’s effect towards short-term memory and concentration. This is a quasi-experimental study using pre- and post-test design, performed to 30 adult women aged between 19-24 years old. The measured data were memorized words from recall memory test and duration to finish traffic jam puzzle, before and after listening to Mozart Sonata K448 for Two Pianos in D-major 2nd Movement. Data were analyzed using paired t-test with ? = 0.05.The results showed that there is a significant difference of words remembered before and after listening to music (35,43±6,70444 vs 73±4,727; p<0,01) and duration to finish traffic jam puzzle (125,60±149,939vs 53,67±69,652 seconds ; p<0,01). We concluded that Mozart’s music improves short-term memory and concentration.

Keywords: Mozart’s sonata, short-term memory,concentration
The Effect of Melinjo (Gnetum gnemon L.) Leaves and Melinjo Peel Extracts on Induced-Hyperuricemia Male Rats Model
Authors: Sari Nia K , Soemardji Andreanus A , Fidrianny Irda
Published: August 2019

Hyperuricemia is condition which blood uric acid levels increase, in men are greater than 7 mg/dL and in women over 6 mg/dL. In Indonesia the prevalence of hyperuricemia was 32% in people under 34 years and increases every year. Beside an emping from melinjo seed there is Indonesian meals made from mixture of seed, peel and leaves of melinjo, namely as sayur asem. Consumption a lot of emping can induced hyperuricemia. This study aims to assess the effect of melinjo leaves and peel extracts to reduce uric acid levels on melinjo seed hyperuricemia male rats model. Methods: Induction was performed by giving high purine diet, melinjo seed crude drug (emping) 4.5 g/kg bw. Ethanol extracts of melinjo leaves and melinjo peel were administered in 3 doses. Results: Ethanol leaves extract of melinjo (Gnetum gnemon L.) 36 mg/kg bw could decrease uric acid levels up to 61.04%, while ethanol peel extract of melinjo 13 mg/kg bw can decrease uric acid levels up to 31.25%. Conclusions:  Melinjo seed crude drug (emping) could increase the bloods uric acid level in rats up to 4.65 mg/dL. Ethanol leaves and peel extracts of melinjo could decrease uric acid blood levels in hyperuricemia rats.

 

Keywords : Gnetum gnemon L., seed, leaves, peel, antihyperuricemia
Antibacterial Effect of Lime (Citrus aurantifolia) Peel Extract in Preventing Biofilm Formation
Authors: Jeffrey Jeffrey , Satari Mieke H , Kurnia Dikdik
Published: August 2019

The routine and long term use of chemicals to maintain oral and dental health have the potency to result in the emergence of side effects; therefore another strategy is needed as an alternative such as using antimicrobial agents extracted from plants. The purpose of this study is to review the effectiveness of lime (Citrus aurantifolia) peel extract as an antibacterial in preventing biofilm formation. Biofilm is a component consisting of bacteria in a self-produced polymeric matrix, attached to an inert surface, alive, and can survive because of its ability to capture nutrients and withstand adverse environmental conditions. Lime peel contains flavonoids which are the largest group of polyphenol compounds that can work as antioxidants and antibacterial by denaturing bacterial cell proteins and damaging bacterial cells. Flavonoids can also inhibit glucosyltransferase (GTF) activity of Streptococcus mutans to prevent biofilm formation. Lime peel extract inhibits the formation of the activity of the enzyme Streptococcus mutans. As a conclusion lime peel extract contains compounds with therapeutic potential and has the effect of inhibiting the formation of the activity of the enzyme Streptococcus mutans so that it can be used to inhibit the formation of biofilms.

Keywords: antibacterial, biofilm, Citrus aurantifolia