bluuebunny/crossref_metadata_2025 huggingface dataset:
Orthogonal Regression Analyses of solar Irradiation and DC Power Data
Authors:   Assistant Professor, Department of Electronics and Communication, BMS College of Engineering, Bangalore, India., H.H.* Mr. Surendra , D Mr. Seshachalam ,   Professor, Department of Electronics and Communication, BMS College of Engineering, Bangalore, India., K.R. Mr. Sudhindra ,   Associate Professor in the Department of Electronics and Communication, BMS College of Engineering, Bangalore, India.
Published: February 2020

The rapid deployment of solar photovoltaic cells in recent times is enablingdata analysis of renewable energy solar source and its conversion to electrical energy. The need for estimating the capacityofSolar irradiation and solar DC power in any geographical location is necessary for short-term and long-term forecasting. In this paper a regression-based data analysis is carried out at different locations in India and analyze the residue for better fit. Here solar DC power is a dependent output variable and solar irradiance is an independent predictor. The orthogonal regression is a standard linear regression technique involves in reducing the sum of squared orthogonal projections. The primary goal of this paper is to analyze orthogonal regression technique withthe relationship between response (DC power data) and predictor (solar irradiation) across different diverse locations. The fitted value for the solar irradiance accounts for the uncertainty in the value of the predictor.The study of nonlinear nature of solar irradiation and DC power generated across geographically dispersed sites for a time series data leads to better estimate of solar power.
Direct Synthesis Based Fractional Order PID Controller Design for Non - Integer Order Systems with Time Delay
Authors:   Department of Chemical Engineering, Gayatri Vidya Parishad College of Engineering (A), Visakhapatnam, INDIA., rao* C. V. Nageswara , Prasad P. Siva ,   Department of Chemical Engineering, Gayatri Vidya Parishad College of Engineering (A), Visakhapatnam, INDIA.
Published: February 2020

Present study focuses on design and implementation of PI D controller to obtain the closed loop response of for non-integer order systems (NIOS). Controller is designed using direct synthesis (DS) method. Performance analysis in terms of IAE, ISE and ITAE is made and compared with that of literature reported methods. Robustness in terms of Maximum Sensitivity (Ms) is also analyzed. Tuning parameters q and , are selected with an arbitrary value for set-point trajectory and disturbance rejection. The closed loop response is studied for various non-integer order systems. Tuning parameters with respect to q (adjustable tuning parameter in assumed closed loop transfer function) and are arrived at for different case studies, q varying from 0.05 to 0.5 and varying from 0.5 to 6. FOMCON tool box of Simulink in MATLAB is employed for the simulation study.
Design of Temperature and Humidity Control on Arabica Coffee Storage
Authors:   Physics of Engineering , Universitas Nasional, Jakarta, Indonesia, Wati* Erna Kusuma , Hidayanti Fitria ,   Physics of Engineering , Universitas Nasional, Jakarta, Indonesia, Prasetya Aji ,   Physics of Engineering , Universitas Nasional, Jakarta, Indonesia
Published: February 2020

Storage of coffee beans is essential to maintain the quality of coffee in terms of water content and humidity. So we need a storage room with a stable temperature and humidity. In this research, we will design a post-harvest coffee bean storage system, by maintaining the condition of the room at a temperature of 19°-27°C with humidity of 60% -70%. The design uses block diagrams and wiring diagrams, then makes a coffee bean storage box by using a fan as an actuator, and a DHT 11 sensor to measure the temperature and humidity of the room. The results of this study are the Arduino -Uno based Arabica coffee bean storage box takes 7 hours to get the expected set-point. the storage room has a temperature of 19°-27°C and humidity 60-70%
Interpretive Structural Modelling (ISM) Methodology and its application in Supply Chain Research
Authors:   Research Scholar – VITBS, VIT University, Vellore, TN, India., Wankhade* Nilesh , Kundu Gautam Kumar ,   Professor – VITBS, VIT University, Vellore, TN, India.
Published: February 2020

The horizon of the supply chain (SC) in the business in increasing continuously and becoming complex with its expanding role, which is result of technological advancement, ever increasing customer expectation, regulatory compliances and changing business models. Researchers used various methods to understand SC complexity and decipher the factors impacting the SC processes and concepts. Interpretive Structural Modelling (ISM) is one of the methods which is widely used in literature to transforms complex and abstract business phenomenon or vaguely defined business processes into clearly articulated, visual, structured models. This method includes interactive technique which helps to structure and build the comprehensive systematic model for set of different but related elements. The objective of this paper is to review the literature on ISM as methodology for understanding the complexity of SC challenges, issues, barriers and enablers of various processes or functions and their classifications based on SC processes using a structured approach. This study further elaborates the process for modelling structure and presented ISM as a modelling approach by elaborating steps and important features. Discussion and managerial implications of using and extending ISM in SC are provided to conclude the review.
Strength and Microstructural Behavior of Expansive Soil Treated with Limed Leather Waste Ash
Authors:   Department of Civil Engineering, Jaypee University of Information Technology, Waknaghat, (H.P.) India., Parihar* Niraj Singh , Gupta Ashok Kumar ,   Department of Civil Engineering, Jaypee University of Information Technology, Waknaghat, (H.P.) India.
Published: February 2020

Expansive clays are one of the most widely found soil type across the globe known for their low strength behavior. A number of studies have been conducted in the past few decades to stabilize such soils using various additives. The traditional stabilizers such as cement and lime not only prove quite costly due to their high industrial demands but also result in exhaustion of the available natural resources. This study is based on admixture of a waste originating from leather industry known as limed leather waste which can be utilized as a potential stabilizer and strength enhancer for expansive clays at the construction sites as a replacement to conventional additives. The utilization of the waste besides treating the problematic soil will also solve the dumping issue of the waste itself and will reduce the environmental hazards. It is found from the study that the waste when used in the ash form is capable of improving the compaction and strength characteristics of the expansive soil substantially. A comprehensive increase in soil strength is also achieved through curing. The SEM results are used to explain the microstructural changes in the soil and agglomeration and generation of silicate gel compounds responsible for increase in strength of the soil-ash mixture.
Improvement Social Customer Relationship for Community Enterprise through using Gamification
Authors:   Assistant Professor, Department of Information Technology, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Thailand., Nuameesri* Sumitra
Published: February 2020

There are many types of community enterprise products in Thailand but not yet widely known, resulting in not many customers. In some cases, the existing customers have the opportunity to disappear because community entrepreneurs do not have marketing knowledge to help keep and maintain their customers. This paper proposes the development of gamification for improving the customer relationship management in community enterprises on social media such as Facebook. The results showed that the applied gamification for the community enterprise products has the highest level of efficiency evaluation and has the highest acceptance criteria while being used by experts and users. It can be said that Thai gamification on social media could be effectively used to support community enterprises in improving social customer relationship management and buying their products.
Modern Agriculture using Wireless Sensor Network
Authors:   Teaching Associate School of ECE. REVA University. Bangalore-India, C.S.* Anilkumar , G Suhas ,   UG Scholar School of ECE. REVA University. Bangalore-India., S Sushma ,   UG Scholar School of ECE. REVA University. Bangalore-India, Dingra Rishabh Kaur ,   PG Scholar REVA University Bangalore-India., Dingra Mahima Kaur ,   PG Scholar REVA University. Bangalore-India.
Published: February 2020

Indian economy majorly depends on the agriculture sector hence it is known as the backbone of India. Here agriculture segment accounts for 18% of India’s GDP and is providing employment to 50% of the country workforce. The main aim of this work is to reduce the manual monitoring of soil testing and plant irrigation and help farmers in increasing the agricultural production. The testing of soil is done through various sensors and based on the data received the farmers can cultivate the appropriate crop that is suitable for soil. Detection of plant’s diseases is done through image processing technique. And also includes pest detection and control by using Acoustic sensor and we make use of Ultrasonic sound emitter to keep the pests away from destroying the crops. It alerts farmers through a message. All the information is sent to IBM Bluemix Cloud by ZigBee protocol. A direct communication link is set up between farmers and the consumers without the involvement of any middleman via mobile app.
Experimental Check on Physical and Mechanical Properties of Saw Blocks
Authors:   Department of Civil Engineering, Sri Krishna College of Technology, Coimbatore, India., Renjith Dona , K* Balamurali. ,   Department of Civil Engineering, Sri Krishna College of Technology, Coimbatore, India., I Padmanaban. ,   Department of Civil Engineering, Sri Krishna College of Technology, Coimbatore, India.
Published: February 2020

Blocks plays a major role in framed and non-framed structure, in framed structures blocks are employed as a filler and in non-framed structures it is employed to transfer the load. These are often used as an alternative for different stones with large weight and are generally used in the construction of buildings. The process of manufacturing of blocks from clay involves preparation of clay by natural weathering process, molding and then drying and burning of blocks. Due to high demand on fine aggregate, an attempt has been made to study saw waste as a partial and total replacement for fine aggregate and binder. A detailed investigation is carried out for Ordinary Portland cement and Portland pozzolana cement with various proportion of saw waste. Saw waste is utilized in the form of dust and ash. Saw waste is a by – product or waste product of wood working operation such as sawing, routing, drilling and sanding. It is sundried and kept in water proof bags. Mostly, the period of drying may be three to ten days. It also depends upon the weather conditions. This work aims to show the comparative studies of saw brick with fly ash brick and conventional brick. Test results of compressive, split tensile and crushing test are investigated.
Piccole zone di simmetria
Authors: Bresciani Califano Mimma (Vincenza)
Published: February 2020

If it intends to enhance awareness and to stimulate intellectual and cultural maturity, literature cannot ignore – and when it survives over time does not ignore – the great conquests of philosophical thought and the fundamental stages marked by the progress of scientific knowledge.
A scientific result and a poetic result both represent an internally-ordered fragment of reality which moves and stirs us by the intrinsic beauty of the image that it evokes and its significance at the level of meaning. Both scientific and literary languages, each in its own way, tend to the decodification and representation of the external world.
Imagination, intuition and rationality come together in creativity, in the construction of scientific models and of literary styles.
Altri orientalismi
Authors: Vicente Filipa Lowndes
Published: February 2020

Other Orientalisms analyses various forms of knowledge about India through the circulation of people, ideas, knowledge, images and objects between Florence and Bombay.
In the second half of the nineteenth century Florence became an important centre for studies on India, manifested in the organisation of exhibitions, museums, journals and international conferences. Inspired by the relationship between two Indianists – the Italian Angelo De Gubernatis, a teacher of Sanskrit in Florence and the Goan José Gerson da Cunha, a physician and historian in Bombay – this book discloses an India that emerged from different places, peopled by a multiplicity of voices. The institutional, intellectual and museum experience of Florentine orientalism, albeit peripheral, further enhances the debate on knowledge and colonial power that has engaged social and human sciences in recent decades.
I diritti sociali: un percorso filosofico-giuridico
Authors: Casadei Thomas
Published: February 2020

The controversial notion of social rights is situated at the heart of the relations between some key categories in the philosophical-juridical lexicon, such as equality, solidarity, citizenship and social state. The book sets out by dealing with their genesis towards the end of the eighteenth century, with particular attention to the lines of argument of Thomas Paine, to go on to examine their development, their juridical configuration and the criticisms levelled at them during the twentieth century, before arriving at basic income theories, namely alternative proposals going beyond social rights (and the juridical-constitutional forms in which they came into being). Hence, the question is dealt with up to the context of globalization and the complicated processes of European unification, also in order to single out ways to relaunch democracy itself 'from the bottom'. The underlying idea is that social rights are legitimately «fundamental» and «human rights» and that to be due they need two structural conditions: to be conceived of as «indivisible», «interdependent» and «interconnected» with respect to other fundamental rights (as ratified by the Vienna Declaration of 1993) and to be rooted contextually within a social and institutional space which today necessarily has to be multilevel but which, at the same time, does not leave aside the states' power of regulation and implementation.
Percorsi, flussi e persone nella progettazione ospedaliera
Authors: Setola Nicoletta
Published: February 2020

What does it mean to design hospitals according to the flows while satisfying the users' needs? How do the different parts of the hospital body bind together? When can a spatial and functional relationship be rightly defined as close, adjacent or distant? How difficult is it to walk along a connection? The volume reconstructs the state of the art on the theme of people flows in hospitals, and identifies tools to support the project and management of the flow system within hospitals. In particular, it presents the innovative approach Space Syntax, born in the Anglo-Saxon world and used for highly complex building projects. The book offers an original contribution in a sector in which the need for studies combining research and professional activity has arisen.
La riforma universitaria nel quadro dei sistemi di governance europei
Authors: Regini Marino
Published: February 2020

Over the past 30 years, all European countries have been affected by reorganization processes concerning their higher education systems. In this volume, two aspects of this type of reorganization are discussed: changes in governance models and differentiation processes within the various higher education systems. The new governance models of higher education systems are based on three pillars: autonomy, evaluation and competition. Everywhere, universities were managed in a more business-like fashion, strengthening the central leadership and reducing the power of the collective bodies. In Italy, autonomy has developed in a distorted way, and for a long time has not been accompanied by evaluation and competition. In addition to reforming governance, European governments have responded to the students’ mass demand for university access with different backgrounds and ambitions, differentiating the higher education systems in the concerned countries. There was a first surge of differentiation in the 1960s and 1970s, and a second one took place in the late 1990s. Italy was an exception, and in this lies the origin of most of the problems of Italian universities, which the volume discusses while also offering possible solutions.
The Heian Court Poetry as World Literature
Authors: Gerlini Edoardo
Published: February 2020

What could be the common points between the Literature produced at the imperial court of 9th-10th century in Japan with the one composed in Italy under the rule of Frederick II of Hohenstaufen? Why the Kokinwakashū in Japan and the Sicilian School of Poetry in Italy have been acknowledged as canons for later literary traditions? How did the political power influence the production of court poetry and the role of poets in the court environment? Why two particular poetic forms like the sonnet in Europe and the waka in Japan succeeded to survive until modern times?
Predicatori nelle terre slavo-orientali (XI-XIII sec.)
Authors: Romoli Francesca
Published: February 2020

The book offers an overview of homiletic literature in the Kievian period (XI-XIII century) through the figures of four preachers: the Metropolitan Nikifor I († 1121), Serapion Vladimirskij († 1275), Luka Židjata († 1059) and the hegumen Moisej († 1187). Adopting an approach that, on the one hand takes into consideration the methods recently applied to the study of Western and Byzantine mediaeval homiletics, and on the other recent studies addressing the rhetorical form and the use of citations, the author investigates the function of the Biblical and liturgical citations in the texts of the Slavic-Oriental homiletic tradition, proposing an interpretation in a key that is not merely rhetorical but also linked to pragmatic linguistics.
Evaluación del proyecto de Desayunos Saludables e Higiene Bucodental en los colegios de la Comunidad de Madrid, curso escolar 2018 -2019
Authors: Pérez Arcones Laura , González Pérez Mª Luisa , Mateos Granados Juan Carlos , García Gómez Susana
Published: February 2020

El proyecto “Desayunos Saludables e Higiene Bucodental”, engloba una serie de actividades de Educación para la Salud, cuyo objetivo es sensibilizar a la comunidad escolar sobre la importancia del desayuno e implementar hábitos alimentarios saludables que contribuyan a la mejora de la situación nutricional de la población en edad escolar. En la Comunidad de Madrid, este proyecto se lleva desarrollando desde el año 2006, e incluye como actividad práctica un desayuno saludable realizado en el propio centro escolar junto con sesiones educativas de nutrición e higiene bucodental. También incluye actividades formativas dirigidas a familias y profesorado.
Durante el curso escolar 2018-2019, el proyecto se realizó en 333 colegios de la región (1267 aulas) llegando a un total de 31930 alumnos de Educación Primaria, lo que supuso alcanzar el 27% de la cobertura de los colegios de la Comunidad de Madrid.
La coordinación interinstitucional conseguida durante el desarrollo del proyecto Desayunos Saludables durante el curso escolar 2018-2019, fue, desde el punto de vista de Salud Pública, satisfactoria, ya que se lograron los criterios de calidad definidos y el porcentaje de cobertura alcanzado en los centros escolares de la Comunidad de Madrid fue correcto.
Enfermedad de Behçet. Reporte de caso clínico
Authors: Torres Guerrero Arnulfo , Vélez Duncan Carlos Arturo , Rodríguez Barrios Jairo
Published: February 2020

La enfermedad de Behçet es una patología multisistémica de etiología desconocida, inicialmente descrita como una triada de aftas orales y genitales recurrentes junto a lesiones inflamatorias oculares como uveítis. Afecta principalmente a varones jóvenes. Todas las manifestaciones clínicas de la enfermedad pueden ser autolimitadas a excepción de las lesiones oculares. No es una enfermedad crónica persistente por el contrario consiste en ataques recurrentes de inflamación aguda. Se han propuesto algunos criterios internacionales para ayudar en el consenso diagnóstico. Se presenta un caso de un paciente de 45 años con Clínica Florida de la enfermedad, el cual fue enfocado de una forma sistemática y adecuada para llegar al diagnóstico desde la consulta inicial, con confirmación anatomopatológica de la enfermedad.
Cálculo del tamaño de la muestra: un paso importante en el diseño investigativo
Authors: Ordóñez Ordóñez Leonardo Elias , Angulo Martínez Esther Sofía
Published: February 2020

Calcular el tamaño de la muestra que se necesita para aprobar o rechazar la hipótesis nula es una parte importante en el diseño investigativo. Para realizar este cálculo debemos definir el tipo de variable utilizada para medir el resultado, la diferencia que queremos determinar si existe (diferencia mínima clínicamente significativa), la desviación estándar de la variable de resultado (usualmente obtenida al revisar la literatura), el poder o potencia estadística (usualmente >0.8) y el valor del error tipo I (usualmente>0.8) y el valor del error tipo I (usualmente <0.05). Aunque son muchas las publicaciones que no incorporan este aspecto metodológico, cabe esperar que con la actual disponibilidad y accesibilidad a programas informáticos, el tamaño de muestra se calcule con más frecuencia en los trabajos de investigación en Otorrinolaringología. A través de un ejemplo se hace una explicación práctica sobre la forma de calcular el tamaño de la muestra utilizando un programa informático de buena aceptación.
Recuperabilidad de la parálisis facial periférica con prednisolona vs. aciclovir/prednisolona
Authors: Amaya T María Angélica , Romero C Gustavo Adolfo
Published: February 2020

En la literatura no existe suficiente evidencia que soporte la asociación de un antiviral al corticoide sistémico; sin embargo, su uso es frecuente en la práctica clínica justificada por la posible etiología viral. Objetivo: Describir la frecuencia de recuperación completa de la parálisis facial periférica idiopática en los pacientes que reciben prednisolona o prednisolona/aciclovir. Métodos: Se realizó un estudio de cohorte histórica identificando los casos de parálisis facial periférica. Resultados: Se reportan 106 casos, 59 mujeres (55,7%) y 47 hombres (44,3%), con edad promedio 36.9 años (DE16.7). Al ingreso el 47,2% de los pacientes presentaron parálisis grado III. Recibieron prednisolona 32 pacientes (30,2%) y prednisolona-aciclovir 74 (69,8%). La recuperación completa (House Brackman I) con prednisolona se documentó en 23 (71,9%) y 52 (70,2%) pacientes tratados con prednisolona-aciclovir. El seguimiento mediano fue 39 días. En ambos grupos la frecuencia de mejoría fue mayor en quienes ingresaron con grados II y III de parálisis. Conclusión: La tasa de mejoría reportada es superior a la descrita con el uso de placebo pero está por debajo de lo esperado para el uso de prednisolona a 3 meses. La frecuencia de recuperación completa fue similar con prednisolona y prednisolona-aciclovir.
La otorrinolaringología frente a la responsabilidad médica en Colombia
Authors: Támara P Liliana Marcela
Published: February 2020

Con un enfoque en otorrinolaringología, se hace una reflexión sobre los casos de la investigación descriptiva de 535 informes periciales realizados entre el 1 de enero del 2006 y el 31 de diciembre del 2010, en el Grupo de Clínica Forense, Regional Bogotá, del Instituto Nacional de Medicina Legal y Ciencias Forenses de Colombia. Se analiza la aproximación a la responsabilidad civil, penal y administrativa de los médicos, y se plantea el hecho de que hasta la fecha no ha habido un adelanto legislativo y jurídico tendiente a aclarar la posición de los prestadores de servicios de salud ante los daños ocasionados durante la práctica médica
Efectividad quirúrgica de la timpanoplastia con cartílago tragal autólogo en niños - técnica inlay 2007-2011
Authors: Castro Medina José Rafael
Published: February 2020

Objetivo: medir la efectividad quirúrgica, en términos anatómicos y audiológicos, de la timpanoplastia en niños, mediante la técnica inlay con cartílago tragal autólogo, en un hospital de tercer nivel de complejidad de la ciudad de Medellín, entre los años 2007-2011. Diseño: estudio descriptivo retrospectivo. Materiales y métodos: el formulario de recolección de información se dividió en tres grupos de variables: generalidades poblacionales, eficiencia y efectividad. Resultados: 91 pacientes cumplieron los criterios de inclusión, entre quienes se encontró eficacia quirúrgica en el cierre anatómico de la perforación (95,6%) y efectividad en la mejoría en los niveles audiológicos (89,01%). Conclusión: la timpanoplastia con cartílago es el método ideal en la corrección de las perforaciones timpánicas en niños, con el cual se han obtenido excelentes resultados anatómicos y audiológicos; además, se observan menos recurrencias, mayor facilidad en la revisión postoperatoria, menor tiempo quirúrgico y visitas posquirúrgicas, de rápida y fácil adaptación a las actividades acuáticas y deportivas y bajo costo.
Sifilis laríngea
Authors: Peña Valenzuela Alberto , García León Nathalia
Published: February 2020

La sífilis es una enfermedad de transmisión sexual, causada por la espiroqueta Treponema pallidum; debido a su complejidad, se le conoce como “gran simuladora”. Existen cuatro fases clínicas: primaria, secundaria, latente y terciaria. Es sensible a la penicilina, y su incidencia disminuyó a partir de la era antibiótica. Sin embargo, con la aparición del virus de inmunodeficiencia humana ha aumentado su aparición. La sífilis laríngea es una entidad rara y tiene un comportamiento clínico variable; dentro de su diagnóstico diferencial deben incluirse enfermedades granulomatosas laríngeas, como tuberculosis, sarcoidosis y el carcinoma laríngeo. Presentamos el caso de un paciente de 42 años, con cuadro de disfonía compatible con sífilis laríngea.
Cómo escribir una carta al editor
Authors: Tobar Bonilla Luz Nelly
Published: February 2020

Las cartas en general se consideran como una comunicación, manual o impresa, entre individuos o personas y los representantes de instituciones. En las publicaciones científicas, la carta está comúnmente escrita por uno o másautores, y se dirige al editor de una revista. Este tipo de documento contribuye al intercambio de ideas, opiniones, experiencias básicas o clínicas y descubrimientos científicos; es un espacio de opinión para la comunidad, un espacio para expresar algún tema dirigido a los lectores de cada revista
Angina de Ludwig. Experiencia en 29 pacientes Ludwig’s angina.
Authors: Ríos Deidán Carlos , Pacheco-Ojeda Luis , Narváez Black Mercedes , Quisiguiña Sánchez Karla
Published: February 2020

Introducción: La angina de Ludwig es una celulitis severa del cuello, con afectación rápida del espacio submandibular. Tiene suma importancia por el potencial riesgo de muerte. Objetivo: del presente estudio fue conocer las características clínicas y terapéuticas de esta patología.Diseño: estudio analítico, retrospectivo Materiales y métodos: se incluyeron 29 pacientes atendidos en el Hospital Carlos Andrade Marín, de Quito, Ecuador, entre enero del 2005 y enero del 2013. Se analizarondatos demográficos, clínicos, bacteriológicos, de manejo de la vía aérea, de abordaje quirúrgico y de morbi-mortalidad. Resultados: El sexo masculino fue predominante. En el 79% el foco etiológico fue odontogénico. La tomografía axial computarizada (TAC) se realizó en el 85% de los casos, y mostró áreas abscedadas en un 68%. Se practicó cervicotomía en 24 pacientes, en 12 de los cuales fue unilateral, sin que se aumentara la morbilidad, y se disminuyó la estancia hospitalaria. La bacteria aislada más frecuente fue el estreptococo milleri, y en el 58% se encontró gas en la cavidad quirúrgica. En el 24% de los casos se efectuó traqueotomía. El antibiótico más usado fue un betalactámico +inhibidor de β-lactamasa. La estancia hospitalaria media fue de diez días. Un 66% de pacientes presentaron complicaciones, pero no mortalidad.Conclusión: La antibioticoterapia de amplio espectro y la descompresión quirúrgica fueron eficaces en el manejo de la angina de Ludwig de nuestros pacientes.
Experiencia del Hospital Universitario San Ignacio en el manejo con microcirugía transoral con láser robótico de co2 para carcinoma glótico temprano
Authors: Jiménez Fandiño Luis Humberto , Barragán Delgado Sebastián , Rodríguez María Alejandra
Published: February 2020

Objetivo: Evaluar de manera retrospectiva el rol de la microcirugía transoral conláser robótico de CO2 para el tratamiento del carcinoma glótico temprano de laringe. Diseño: Análisis retrospectivo de registros médicos. Metodología: Estudio retrospectivo de 8 casos de carcinoma glótico temprano (7 T1a y 1 Tis) llevados a cordectomía con láser robótico de CO2 en un período comprendido entre los años 2012 y 2014. Resultados: La tasa de control local global fue del 75%, conuna supervivencia libre de enfermedad estimada por el método de Kaplan y Meierdel 75% y una supervivencia global del 100%. Conclusiones: La cordectomía conláser robótico de CO2 frente a otras terapias tiene beneficios relacionados con costoefectividad, preservación laríngea, posibilidad de seguimiento y alternativa como terapia de salvamento.
Tamizaje auditivo neonatal en pacientes de alto riesgo con otoemisiones acústicas: evaluación de resultados.
Authors: Ordóñez Ordóñez Leonardo Elías , Díaz Patiño Diana Patricia , González-Marín Néstor Ricardo , Silva Rueda Ricardo , Ramírez Claudia , Paredes Dunia , Rodríguez Montoya Silvia Raquel
Published: February 2020

Objetivo: Evaluar la efectividad del programa de tamizaje auditivo del Hospital Militar Central en pacientes de alto riesgo de hipoacusia neurosensorial, el cual está basado en la realización de otoemisiones acústicas. Diseño: Estudio de Cohorte Histórica. Métodos: Se incluyeron pacientes mayores de 12 meses de edad nacidos en el Hospital Militar central entre enero de 2009 y diciembre de 2012; a quienes por condiciones de alto riesgo de hipoacusia neurosensorial se les realizó antes de los 6 meses de edad otoemisiones acústicas como prueba de tamizaje auditivo. Se analizaron 125 pacientes evaluando cada oído por separado para un total de 250 mediciones, a esta población, se le realizó diagnóstico auditivo con el “Gold standard” cross-check. Resultados: Se estudiaron los factores de riesgo para hipoacusia neurosensorial encontrando que el peso al nacer ≤1500 gr se relacionó con hipoacusia en un 16%. El 5.6% tiene antecedente familiar de hipoacusia neurosensorial en primer y segundo grado de consanguinidad. La infección congénita (STORCH:sífilis, toxoplasmosis, rubéola, citomegalovirus, herpes); como factor de riesgo se presentó en el 2.4% únicamente con la presencia de Toxoplasmosis, de los cuales 2 oídos presentaron cofosis.
Índice de éxito en cirugía del estribo en el tratamiento de otoesclerosis
Authors: Lugo Machado Juan Antonio
Published: February 2020

Objetivo General. Determinar el índice de éxito  del tratamiento quirúrgico de la otoesclerosis en un tercer nivel de atención. Métodos. Este estudio se realizazó en  Centro Médico Nacional del Noroeste  Diseño: Retrospectivo, Observacional, Descriptivo, Trasversal. Muestreo. No probabilístico  por serie consecutiva de casos  . Se revisaron los  expediente  clínicos de  los pacientes otoesclerosis   de julio 2009 a enero 2011. Se tomarón datos como edad, sexo, signos y síntomas, datos audiológicos pre y postquirúrgicos  y el éxito.  De un total de 56 expedientes revisados, se encontraron 36 expedientes , 61.9%  sexo femenino y 27.1% alo masculino, con una edad media de 36.7 años, la afección bilateral fue  80% de los  pacientes y unilateral de 20% pacientes.  En 36 pacientes, se realizaron 49 cirugías,  bilaterales en 10 pacientes, 7 en oído izquierdo y 2 en oído derecho y 2  decidieron no operar.  De los 49 procedimientos, 1 paciente presento vértigo postoperatorio y 1  neurosensorialización de la hipoacusia y 1 no presento cambios de su hipoacusia Discusión y conclusión  : Los resultados presentados, fueron semejantes a los reportados en la literatura, de la misma manera se tiene un índice de éxito quirúrgico mayor del 90%, compatible   a   los  diferentes  autores.
RESULTADOS ANATÓMICOS Y AUDIOLÓGICOS EN TIMPANOPLASTIA TIPO I LA POBLACIÓN PEDIATRICA
Authors: Jimenez Montealegre Andres
Published: February 2020

Estudio descriptivo de los pacientes pediátricos llevados a cirugía de Timpanoplastia tipo I entre Ene/2009 a Jun/2016. Se logro recopilar la información de 89 pacientes, con un total de 117 oídos operados. La población fue distribuida en tres grupos de acuerdo con la edad al momento del procedimiento quirúrgico así; entre 2 y 5 años (23,08%), entre 6 y 8 años (50,43%) y entre 9 y 11 años (26,50%). El tamaño de la perforación fue; <25% en 17.9% (22),  entre 26-50% en el 29,1% (34 ), entre el 51 al 75%  fue del 23,9% (27) y  >76% de 29,1% (34). Los resultados audiológicos evaluados  que se obtuvieron después de comparar los promedios de GAP aéreo óseo y PTA pre y postoperatorios de cada grupo mostraron mejoría esta solo fue  estadísticamente significativa en los grupos de entre 6 y 11 años. Los resultados anatómicos medidos por cierre del neotimpano fue exitoso en el 88,9% (24) de los niños entre 2-5 años, del 83,1% (49) de los niños entre 6 y 8 años y del 80,7% (25) de los niños entre 9 y 11 años, sin diferencias entre los grupos.
Caracterización de un grupo de pacientes atendidos por masa parotídea en una institución de tercer nivel.
Authors: JARAMILLO JUAN CARLOS , Esquivel Ana M , Holguín Jorge A , Echandia Carlos
Published: February 2020

Introducción: Los tumores de la glándula parótida son un motivo de consulta frecuente en los centros de referencia para patologías de cabeza y cuello. La mayoría son benignos. Sin embargo, requieren manejo quirúrgico por su localización evidente y riesgo de malignización.Objetivo: Describir las características clínicas y demográficas de pacientes con masas parotídeas en nuestra institución.Diseño: Estudio observacional descriptivo tipo serie de casos.Materiales y métodos: Se realizó un estudio descriptivo de los pacientes con diagnóstico de masa parotídea en el Servicio de Otorrinolaringología del Hospital Universitario del Valle entre 01/2011-06/2014.Resultados: El total de registros fue de 61 pacientes. 20 parotidectomías se realizaron en hombres (32.8%) y 41 en mujeres (67.2%). 7 pacientes (11.5%) tenían 18-30años, 28 (45.9%), 31-50años y 26 (42.6%) más de 50 años. 32 presentaban un tamaño tumoral de 10-39mm (52.5%), 25 (41%) 40-89mm y 3 ≥90mm (4.9%). A 36 se les practicó TAC de cuello (59%). A 47 se les tomó BACAF (77%), a 15 TRUCUT (24.6%) y ninguno se llevó a biopsia excisional. El resultado patológico final fue benigno en un 63.9% y maligno en 13.1%.Discusión: Los tumores de parótida son relativamente frecuentes en la consulta Otorrinolaringológica y de Cirugía de Cabeza y Cuello. En nuestro país no encontramos una caracterización de esta entidad y en los pocos centros de referencia, se encontraron datos de patología maligna exclusivamente.  Conclusiones: La información presentada abre la posibilidad a estudios ulteriores que permitan definir protocolos de manejo para esta patología en nuestro país.
Estandarización y evaluación de un modelo de entrenamiento quirúrgico de cirugía endoscópica nasosinusal en cabezas de cordero desarrollado en el Hospital Militar Central.
Authors: Mora Díaz Carolina , González-Marin Néstor Ricardo , Silva Rueda Ricardo , Guzmán Duran José Eduardo
Published: February 2020

Objetivo: Estandarización y evaluación del modelo de entrenamiento quirúrgico en cirugía endoscópica rinosinusal en residentes de otorrinolaringología del Hospital Militar Central.Diseño: Estudio experimental no aleatorio (antesdespués) Metodología: Se evaluó a los sujetos en estudio con la escala validadapara habilidades quirúrgicas “GOALS” antes y después de realizar nuestro modelo de entrenamiento quirúrgico propuesto en cabezas de cordero, se midió el cambio en las habilidades quirúrgicas de los sujetos en estudio y se realizó el análisis estadístico con pruebas no paramétricas para muestras relacionadas (prueba de wilcoxon) en el programa SPSS(v.15)Resultados: Se reclutaron 12 residentes de Otorrinolaringología, se realizó una medición de las competencias quirúrgicas previa y posterior al entrenamiento comparando el desempeño quirúrgico antes y después evidenciando una mejoría en la percepción de profundidad y destrezabimanual estadísticamente significativa (p<0,05Wilcoxon), sin embargo, posterior al entrenamiento completo no encontramos una mejoría estadísticamente significativa en habilidades como manipulación de los tejidos y autonomía (p>0,05 Wilcoxon).Conclusiones: El modelo de entrenamiento quirúrgico propuesto mejora el desempeño de habilidades mínimas necesarias para una cirugía endoscópica nasal adecuada y segura, sin embargo, la simulación presenta limitaciones con respecto al desarrollo de habilidades como el manejo de los tejidos, sangrado y autonomía del procedimiento.
¿Investigación pedagógica en otorrinolaringología?
Authors: González Marín Néstor Ricardo
Published: February 2020

La construcción del conocimiento como objetivo principal de la investigación ha llevado a desarrollar una serie de enfoques, métodos y paradigmas muy diversos. La pedagogía y educación como objeto de investigación se homogenizó hasta el siglo XX bajo el predominio del positivismo o método científico; las ciencias biológicas siguen el método científico, el muestreo, la medición y el control de sesgos son principios metodológicos de extremada relevancia, dado que se investigan fenómenos que se describen, se cuantifican y se contrastan hipótesis con métodos estadísticos, sin embargo, este enfoque no es suficiente en el contexto de la investigación pedagógica en ciencias de la salud, por lo que se requiere acogerse al enfoque hermenéutico o crítico, conel fin de formar profesionales íntegros.
Prevalence of Urinary Tract Infections in Children and Changes in Sensitivity to Antibiotics of E. coli Strains
Authors: Hasegan Adrian , Totan Maria , Antonescu Elisabeta , Bumbu Adrian Gheorghe , Pantis Carmen , Furau Cristian , Bardaca (Urducea) Cristina , Grigore Nicolae
Published: February 2020

Urinary tract infections (UTIs) are the most common bacterial pathologies in children, but they are difficult to spot. The diagnosis relies on urine culture in order to measure the prevalence of the infection, to identify the etiology and the sensitivity of the germs to different antibiotics. Escherichia coli (E. coli) strains are the most common uro-pathogen germs. The change in sensitivity to antibiotic of these uro-pathogen bacteria should be closely monitored because the physicians should be informed about the evolution of the antibiotic resistance of E coli, for a more effective treatment in their fight against diseases. The study aimed to determine the prevalence of UTIs and the evolution of antimicrobial sensitivity for E. coli. This retrospective study was performed over a period of 4 years, 2013-2016, and included all the patients admitted in the Children�s Hospital, aged 0-18 years, with the suspicion of UTIs; also, the standard culture techniques for urine samples, the modified Kirby-Bauer disk diffusion method for the antibiotic sensitivity testing, and the disk diffusion method to confirm the ESBL production by the clinical isolates of E. coli in urine were used. The statistical analysis was performed using the proportions of sensitive, resistant and intermediates. Descriptive statistics like the total, mean and percentage were performed using the Statistical Package for the Social Sciences (SPSS), version 15.0 and Microsoft Excel. From 15389 urine cultures processed in 4 years, 1530 were positive (9.9 %). Among these positive urine cultures, 1056 (69 %) were positive for E. coli. Testing the E. coli to a range of antibiotics, according to CLSI standard, a high resistance to Ampicillin (69-96%), Amoxicillin/Clavulanic acid (32-70%), Trimethoprim/Sulfamethoxazole (36-42%) was observed and low levels of resistance to Ceftazidime, Cefuroxime, Cefpodoxime, Gentamycin, Nalidixic acid. Among E. Coli strains, 9-9.6 % were ESBL positive. Despite the low number of positive urine cultures in a paediatric population, it is very important to perform the urine culture in order to correctly identify the etiology of UTIs, recommend the right antibiotic, and avoid the wrong use of the antibiotics in children.
Prediction Models of Albumin Renal Excretion in Type 2 Diabetes Mellitus Patients
Authors: Popa Amorin Remus , Judea Pusta Claudia Teodora , Vesa Cosmin Mihai , Bungau Simona , Buhas Camelia Liana , Sava Cristian , Dimulescu (Nica) Ioana Alina , Zaha Dana Carmen , Bustea Cristiana
Published: February 2020

Microalbuminuria is a cardiovascular risk factor in type 2 diabetes mellitus patients. It is very important to know which the predictor factors for albuminuria are, because these elements may be influenced by pharmacological measures. In our study we propose three models for the prediction of albumin glomerular excretion in a group of 446 type 2 diabetes mellitus patients: the clinical-biochemical model, the pharmacological model, and the integrative model that reunites the two models. In the clinical-biochemical model, albumin excretion was statistically significant influenced by HbA1c (positive correlation) and blood pressure (positive correlation). In the pharmacological model, albumin excretion was influenced by angiotensin converting enzyme inhibitors or angiotensin II receptor blockers treatment (negative correlation). In the integrative model, the factors were HbA1c (positive correlation), diastolic blood pressure (positive correlation), angiotensin converting enzyme inhibitors or angiotensin II receptor blockers treatment (negative correlation) and statins treatment (negative correlation). The prevalence of microalbuminuria was 16.14 %. Patients with microalbuminuria had statistically significant higher values of HbA1c, systolic blood pressure, diastolic blood pressure, triglycerides and lower values of HDL-cholesterol. A low glucose control was the most important risk factor for an increased albumin glomerular elimination. The importance of our study consists in the fact that all the elements that predict albuminuria can be influenced: HbA1c, blood pressure, therapy with angiotensin converting enzyme inhibitors or angiotensin II receptor blockers and statins.
Glass Fertilizers Obtained Using Sewage Sludge ASH Wastes
Authors: Militaru Bogdan A. , Vancea Cosmin , Pode Rodica
Published: February 2020

The sewage sludge ash represents an important waste both in terms of the generated quantities and the phosphorus content. Starting from these premises, the present paper proposes an alternative way to use these ash as vitreous fertilizers. Another waste with potential applicability for this purpose is the sludge from the deep water treatment plants, which has a high iron content, an essential microelement for plants development. The paper addresses two aspects: the kinetic study of the solubilisation process of potassium, phosphorus and iron ions from the obtained fertilizers and their effect on barley plants respectively. The kinetic study using the model of intra particular diffusion revealed the process of ionic solubilisation process in two distinct steps: one slow, speed controlling - diffusion through the glass matrix, and second, faster - diffusion through the medium particle boundary. The fertilizing effect, analysed using specific parameters: germination percent, biomass and plant length, recommends as optimal the composition with the maximum addition of ash.
Quantitative Analysis of Polyphenols and Biological Activity of Sage Macerates
Authors: Stanciu Gabriela , Lupsor Simona , Aonofriesei Florin , Calota Nicoleta , Popescu Antoanela , Sirbu Rodica
Published: February 2020

The total phenols concentration in two sage macerates has been estimated by Folin-Cioc�lteau method, identified and quantified using HPLC-DAD method in order to assess the biological activity. The results for total phenols values of Folin Ciocalteau method indicate that Salvia officinalis L macerate S2, presents a higher amount of phenolic compounds than macerate S1. By HPLC-DAD method, six individual phenolic compounds were identified in sage macerates among which where cinnamic acid was found in highest concentration (652.478 mg/100g d.w. in S2 and 473.381 mg/100g d.w. in S1). The antioxidant activity of sage macerates was evaluated using DPPH Radical Scavenging test. Sage macerates exhibited high antioxidant activity, between 439.5 mg GAE /mL and 400 mg GAE /mL. Antibacterial activity of sage macerates was evaluated against 20 Gram positive and Gram negative bacterial strains isolated from clinical specimens. Both macerates showed significant but variable antibacterial activity with inhibition zones ranging from 4.97 mm (S2) to 7.28.mm (S1). The effect was stronger on Gram positive (Enterococcus, Staphyococcus) than Gram negative bacteria (Escherichia sp, Proteus sp, Klebsiella sp). Eleven metals concentrations were determined by AAS method in sage leaves; it has been found that Cd, Ni and Pb concentrations are below the detection limits.
The Synthesis and Toxicological Characterization of Neurotoxic Chemical Agents Simulants
Authors: Tudosie Mihai Silviu , Secara Cristina Anca , Smarandache Catalin Gabriel , Bicheru Simona , Muresan Mihaela , Socea Bogdan , Grigoriu Nicoleta , Badiu Cristinel Dumitru , Epure Gabriel , Dascalu Ana Maria , Draghici Constantin
Published: February 2020

Neurotoxic warfare chemical agents (CWA/NA) induce major toxicological effects to the affected personnel. Their increased toxicity justifies the necessity of developing analytical methods for diagnosis and specific medical counter measures. CWA/NA are extremely toxic agents which are subject to international regulations (The Geneva Protocol regarding the prohibition of chemical weapons). Taking into account the ban on human experimenting due to high toxicity, simulators of neurotoxic chemical agents are being used in laboratories. These are analogue chemical compounds which possess the same relevant physical, chemical and pharmacodynamical properties of the corresponding agents, but with lower intrinsical toxicity. The synthesis and toxicological characterization of these simulators of neurotoxic chemical agents allow the laboratory research of these extremely toxic compounds and the unfolding of risk-free antidote studies. This paper proposes the synthesis and toxicological testing of chemical compounds which simulate sarin (4-nitrophenyl isopropyl methylphosphonate - NIMP) and VX (4-nitrophenyl ethyl methylphosphonate - NEMP).
Experimental Investigation for the Thermo-physical Properties and Stability of CeO2, ZrO2, and Al2O3 Mixed with Ethylene Glycol and Distilled Water
Authors: Alfaryjat Altayyeb , Stefanescu Mariana Florentina , Dobrovicescu Alexandru
Published: February 2020

In this work, the effects of nanoparticles concentration on the density, thermal conductivity, and viscosity of Al2O3, CeO2 and ZrO2 suspended in 20% of ethylene glycol (EG) and 80% of distilled water (DW) is experimentally investigated. By using two step method, the nanofluid samples are provided at different concentrations, including 0.5%, 1% and 2 %. Visual observation of the nanofluid samples showed that CeO2-EG/DW and ZrO2-EG/DW have higher stability for one week more that Al2O3-EG/DW. The results indicate that the density, viscosity and thermal conductivity of the nanofluids increased with increasing the nanoparticles concentration. The highest enhancement of the thermal conductivity was found to be 9.6% for 2% concentration of CeO2-EG/DW at 25�C. Al2O3-EG/DW shows the lowest density and viscosity between all types of the nanofluids.