bluuebunny/crossref_metadata_2025 huggingface dataset:
Cost effectiveness of patellofemoral versus total knee arthroplasty in younger patients
Authors: Chawla H. , Nwachukwu B. U. , van der List J. P. , Eggman A. A. , Pearle A. D. , Ghomrawi H. M.
Published: August 2017

Aims

Patellofemoral arthroplasty (PFA) has experienced significant improvements in implant survivorship with second generation designs. This has renewed interest in PFA as an alternative to total knee arthroplasty (TKA) for younger active patients with isolated patellofemoral osteoarthritis (PF OA). We analysed the cost-effectiveness of PFA versus TKA for the management of isolated PF OA in the United States-based population.

Patients and Methods

We used a Markov transition state model to compare cost-effectiveness between PFA and TKA. Simulated patients were aged 60 (base case) and 50 years. Lifetime costs (2015 United States dollars), quality-adjusted life year (QALY) gains and incremental cost-effectiveness ratio (ICER) were calculated from a healthcare payer perspective. Annual rates of revision were derived from the National Joint Registry for England, Wales, Northern Ireland and the Isle of Man. Deterministic and probabilistic sensitivity analysis was performed for all parameters against a $50 000/QALY willingness to pay.

Results

PFA was more expensive ($49 811 versus $46 632) but more effective (14.3 QALYs versus 13.3 QALYs) over a lifetime horizon. The ICER associated with the additional effectiveness of PFA was $3097. The model was mainly sensitive to utility values, with PFA remaining cost-effective when its utility exceeded that of TKA by at least 1.0%. PFA provided incremental benefits at no increased cost when annual rates of revision decreased by 24.5%.

Conclusions

Recent improvements in rates of implant of survival have made PFA an economically beneficial joint-preserving procedure in younger patients, delaying TKA until implant failure or tibiofemoral OA progression. The present study quantified the minimum required marginal benefit for PFA to be cost-effective compared with TKA and identified survivorship targets for PFA to become both less expensive and more effective. These benchmarks might be used to assess clinical outcomes of PFA from an economic standpoint within the United States healthcare system. Cite this article: Bone Joint J 2017;99-B:1028–36.
Posterior spinal fusion for adolescent idiopathic scoliosis using a convex pedicle screw technique
Authors: Tsirikos A. I. , Mataliotakis G. , Bounakis N.
Published: August 2017

Aims

We present the results of correcting a double or triple curve adolescent idiopathic scoliosis using a convex segmental pedicle screw technique.

Patients and Methods

We reviewed 191 patients with a mean age at surgery of 15 years (11 to 23.3). Pedicle screws were placed at the convexity of each curve. Concave screws were inserted at one or two cephalad levels and two caudal levels. The mean operating time was 183 minutes (132 to 276) and the mean blood loss 0.22% of the total blood volume (0.08% to 0.4%). Multimodal monitoring remained stable throughout the operation. The mean hospital stay was 6.8 days (5 to 15).

Results

The mean post-operative follow-up was 5.8 years (2.5 to 9.5). There were no neurological complications, deep wound infection, obvious nonunion or need for revision surgery. Upper thoracic scoliosis was corrected by a mean 68.2% (38% to 48%, p < 0.001). Main thoracic scoliosis was corrected by a mean 71% (43.5% to 8.9%, p < 0.001). Lumbar scoliosis was corrected by a mean 72.3% (41% to 90%, p < 0.001). No patient lost more than 3° of correction at follow-up. The thoracic kyphosis improved by 13.1° (-21° to 49°, p < 0.001); the lumbar lordosis remained unchanged (p = 0.58). Coronal imbalance was corrected by a mean 98% (0% to 100%, p < 0.001). Sagittal imbalance was corrected by a mean 96% (20% to 100%, p < 0.001). The Scoliosis Research Society Outcomes Questionnaire score improved from a mean 3.6 to 4.6 (2.4 to 4, p < 0.001); patient satisfaction was a mean 4.9 (4.8 to 5).

Conclusions

This technique carries low neurological and vascular risks because the screws are placed in the pedicles of the convex side of the curve, away from the spinal cord, cauda equina and the aorta. A low implant density (pedicle screw density 1.2, when a density of 2 represents placement of pedicle screws bilaterally at every instrumented segment) achieved satisfactory correction of the scoliosis, an improved thoracic kyphosis and normal global sagittal balance. Both patient satisfaction and functional outcomes were excellent. Cite this article: Bone Joint J 2017;99-B:1080–7.
The surgical treatment of non-specific low back pain
Authors: Todd N. V.
Published: August 2017

The National Institute for Health and Care Excellence has issued guidelines that state fusion for non-specific low back pain should only be performed as part of a randomised controlled trial, and that lumbar disc replacement should not be performed. Thus, spinal fusion and disc replacement will no longer be routine forms of treatment for patients with low back pain. This annotation considers the evidence upon which these guidelines are based.

Cite this article: Bone Joint J 2017;99-B:1003–1005.
James VanDerZee’s New Negro vision
Authors: White Russell
Published: August 2017

In her article ‘Selecting the Harlem Renaissance’, Daylanne English notes that ‘we must not underestimate the importance of photographs for the period’s construction of the New Negro, nor for our construction of the Harlem Renaissance’. As one of the foremost photographers working in Harlem in the 1920s, James VanDerZee played a pivotal role in conveying and perpetuating the image of Jazz Age Harlem as a flourishing black community. Despite his self-confessed distance from many of the cultural movements of the time, this article argues that much of VanDerZee’s approach was consistent with elements of New Negro philosophy and ideology, particularly that articulated by W. E. B. DuBois. That ideology viewed, as Henry Louis Gates Jr observes, the public self as something to be fashioned and shaped. Drawing upon a variety of visual tropes, some old such as cartes de visites and cabinet card portraiture, and some much more modern such as publicity photographs found in film magazines of the time, VanDerZee’s images chronicled the aspirational lifestyles of the emergent black middle class of ‘Strivers Row’ (north beyond 139th Street) and the various religious and sporting organizations that permeated Harlem and played a crucial role in developing a civic culture. In doing so, VanDerZee challenged prevailing stereotypes of African Americans then in circulation within American popular culture and helped to change the image of African Americans in the United States.
A compact design of multi-feeder data logging system for power quality measurement with a multiplexer and a single PQ transducer
Authors: Syamsir Hendri Novia , Said Dalila Mat , Wijaya Yusmar Palapa
Published: August 2017

This paper presents a simple and costs effective equipment design multi-feeder data logger for recording and monitoring power quality. The system design uses remote supervising and multi-feeder data logging system (RESMOS). The data collected through resmos portable unit (RMPU) will automatically be saved with the format as binary and comma separated value (CSV). The time setting on the RMPU can be configured with minimum one minute per logging. This data logger uses a single transducer with a multiplexer for recording and monitoring ten channels of power quality at busbar. The system design has been validated with national metrology laboratory scientific and industrial research institute of Malaysia (SIRIM). This tool has the advantage that it can be used to measure harmonic data more than 21st at the same time for ten channels and equipped with software making it easier for analysis data with low operational costs versus another power quality equipment. The experimental results indicate that the proposed technique can accelerate data reading with conversion rate one sample per second for each channel. The device can be used to measure harmonic level and power quality with a confidence level above 95% and percentage error under 2.43% for total harmonics distortion (THD) and 1.72% for voltage harmonics.
EVALUATION OF COREMAP PHASE 2 IN THE EASTERN INDONESIA BASED ON THE CHANGES IN CORAL COVERAGE
Authors: Giyanto .
Published: August 2017

COREMAP (Coral Reef Rehabilitation and Management Program) is a long-term program initiated by the Government of Indonesia to enhance the welfare of the coastal communities by protecting, rehabilitating, and achieving sustainable use of the Indonesian coral reefs and their associated ecosystems. COREMAP is three phases planned program. The first phase was launched in 1998 and finished in 2004. Phase 2 began in 2006 and ended in 2011. The last phase has started since the end of 2014 and will finish in 2019. One of the performance indicators of COREMAP phase 2 (COREMAP 2) was a significant improvement of live coral cover in 80% of all sampling sites. The aims of this study are to find out and evaluate the trend of live coral cover during COREMAP 2. Annual monitoring of coral reefs was conducted in all sites of COREMAP 2 in the eastern Indonesia. Those sites were: Pangkep, Selayar, Buton, Wakatobi, Sikka, Biak Numfor and Raja Ampat. Permanent transects were applied at each site. Life-form of benthic data including hard corals was collected using the Line Intercept Transect (LIT) method and surveyed using SCUBA diving equipment. The result indicates that all sites, except Biak Numfor, demonstrate improvement in live coral cover during COREMAP 2. In contrast, live coral cover in Biak Numfor shows a decline due primarily to storm damage, destruction by bombs, some bleaching, and predation by Acanthaster planci. An increase in live coral covers in six out of seven sites during COREMAP 2indicates that the activities of COREMAP 2 (e.g. public awareness, community-based MCS, alternative livelihood) has a positive impact on the management of coral reefs in the Eastern of Indonesia.
El trabajo de campo en la investigación geográfica de la pesca comercial ribereña en las áreas naturales protegidas del estado de Campeche, México
Authors: Crespo-Guerrero José-Manuel
Published: August 2017

México tuvo una participación muy activa en los foros de consulta de la Agenda 2030, y en particular en su ODS-14. Como resultado, creó el Consejo Nacional de la Agenda 2030 para el Desarrollo Sostenible; constituyó el Comité Técnico Especializado en Desarrollo Sostenible, y configuró el Grupo de Trabajo sobre la Agenda 2030 en el Senado. Este compromiso seguramente se deba a que México es el tercer país americano con mayor extensión litoral (23 761 km), tras Canadá (1 478 106 km) y Estados Unidos (133 312 km). Además, entre 2003 y 2012, el país mesoamericano registró un promedio de capturas marinas de 1 352 000 t, cantidad que lo consolidó entre los 20 primeros países productores del mundo (FAO, 2016). En 2014 extrajo 1 396 205 t, el 1.7% de la producción mundial. A pesar de estos datos, México no es un país consumidor de pescado, difícilmente supera los 12 kg por habitante al año (SAGARPA, 2016). Por tanto, posee una destacada vocación exportadora.
La Dimensión territorial de las narrativas sobre el pasado: un estudio piloto
Authors: Parellada Cristian
Published: August 2017

Las narrativas históricas nacionales son las más frecuentes con las que se encuentran los sujetos, tanto en el ámbito escolar como en el cotidiano. Investigaciones realizadas pusieron de manifiesto cómo en ellas se expresa una concepción esencialista de la nación y el territorio. En la Argentina se estudió y analizó mediante el uso de estrategias de identificación con los actores del pasado, sin embargo no se desarrollaron investigaciones con respecto al territorio que nos permitan aceptar o rechazar esta afirmación. El siguiente estudio piloto indaga qué territorio imaginan los sujetos cuando leen un texto sobre una efeméride nacional. Los resultados pueden contrastarse con lo que investigaciones previas han denominado una concepción esencialista y ontológica de los estados-nación. Se propone explorar las relaciones que establece el sujeto entre las características del territorio imaginado y las de la narrativa construida sobre un evento histórico nacional. Estos datos resultarán de gran importancia para diseñar estrategias educativas sobre la enseñanza de la historia.
La formación profesional docente a lo largo de la vida
Authors: Acosta Pisano Mariana
Published: August 2017

El tema abordado es la formación profesional docente a lo largo de la vida, centrado en la concepción de que la formación no se remite, exclusivamente, al tiempo de cursada de los centros de estudio de grado o a los cursos desarrollados “en paralelo” durante el trabajo. Esta mirada se centra en la dimensión del sujeto y los aspectos intersubjetivos. Analizamos la dimensión de la formación en el trabajo, en la conformación de grupos y en la experiencia cotidiana del desarrollo de la actividad docente del profesor de Historia. Los contenidos del artículo sintetizan el trabajo de investigación desarrollado en una tesis de maestría.
La inmigración a la Argentina en los nuevos materiales digitales
Authors: Massone Marisa , Andrade Gisela
Published: August 2017

Los materiales escolares constituyen una ayuda necesaria y difícilmente prescindible que median la práctica cotidiana de los docentes y la producción de los estudiantes en el quehacer cotidiano del aula. En los últimos años, la cultura material se viene transformando: si bien el uso de libros de texto sigue siendo predominante, éste se combinan cada vez más con la consulta de diversos sitios web, sugeridos por los profesores o hallados por los estudiantes. Partiendo de este presupuesto es que en este artículo analizamos una selección de materiales digitales para la enseñanza de los procesos migratorios en la Argentina. Reflexionamos sobre el lugar que ocupan los materiales multimediales para la enseñanza y las oportunidades que posibilitan para la reflexión sobre dichos procesos migratorios, analizando la perspectiva histórica que transmiten sobre el tema (temáticas, espacios, tiempos históricos y sujetos que privilegian), los lenguajes que utilizan, cómo interpelan la historia escolar y cuáles son sus posibilidades didácticas. En definitiva, este recorrido pretende ser de utilidad a la hora de definir criterios para la selección y evaluación de materiales disponibles en la web a ser usados en la formación inicial o continua, de los docentes en el área de Ciencias Sociales.
PROPUESTA DIDÁCTICA PARA RESOLUCIÓN DE PROBLEMAS DE FÍSICA POR INVESTIGACIÓN DIRIGIDA: UN ENFOQUE PARA FOMENTAR LA CULTURA CIENTÍFICA EN ESTUDIANTES DE GRADO DÉCIMO DEL INSTITUTO TÉCNICO RAFAEL REYES
Authors: Vega Pinzón Adriana Del Pilar
Published: August 2017

El objetivo de este trabajo de investigación es determinar y valorar en que medida la planificación, implementación y evaluación de una propuesta didáctica de resolución de problemas de física por investigación dirigida, en la unidad temática de cinemática, posibilita el fomento de la cultura científica en estudiantes de grado decimo del InstitutoTécnico Rafael Reyes. La implementación de la propuesta se ha realizado durante dos años, con la participación de aproximadamente 120 estudiantes de grado decimo en la asignatura de Física durante el años 2009, 2010 y 2011. El diseño que se utilizo es pre-post, antes y después de la exposición a la intervención experimental, basado en la medición y comparación de actitudes hacia las Ciencias Físicas y el trabajo científico; aprendizajes con comprensión y la capacidad de resolver problemas, en los estudiantes. Los resultados obtenidos muestran la validez de las hipótesis, demostrando que con la implementación del modelo de enseñanza por investigación dirigida se superan muchas de las deficiencias de la enseñanza tradicional en cuanto al fracaso y se fomenta la cultura científica en cuanto al mejoramiento de motivación, interés, aprendizajes significativos y capacidad para resolver problemas en la asignatura de física.
Calidad microbiológica y físico-química del agua para usos recreativos en las playas de Bocagrande y Marbella,en Cartagena de Indias, Colombia.
Authors: Yepes Mayorga Adriana
Published: August 2017

En la actualidad Cartagena es el puerto colombiano sobre el mar Caribe con mayor reconocimiento por su trayectoria histórica y por su actividad turística. Debido a la importancia que tiene en calidad de las aguas de recreo para los bañistas y usuarios en general, se evaluaron parámetros microbiológicos, físicos y químicos en las playas de Bocagrande y Marbella, durante los meses de febrero a abril de 2004, que corresponden a la época de verano de la región. Se observó que los párametros físiscos y químicos tuvieron un comportamiento estacionario durante el periodo de muestreo y cumplen con los estándares dispuestos por el Decreto 1594 de 1984. En los párametros microbiológicos, el promedio estimado de coliformes totales superó el índice que establece esa norma.Los resultados obtenidos para los párametros E. coliy enterococos, se compararon con estudios asociados a la aparición de enfermedades, realizados por Cheung (1989) y por Bandanarayake (1995), respectivamente.
Infancias, subjetividades y cibercultura: noopolítica y experiencia de sí
Authors: Amador Juan Carlos
Published: August 2017

El presente artículo expone los resultados de una investigación cuyo propósito fue analizar las subjetividades y formas de subjetivación, producidas en el contexto de los usos y apropiaciones que un grupo de niños y niñas de Bogotá realiza de la red social Facebook, como pieza estratégica de la cibercultura. En la primera parte se presenta el objeto de estudio y los alcances del ejercicio investigativo. En la segunda, se hacen algunas aproximaciones a conceptos y referentes teóricos del problema, especialmente, los debates sobre la relación infancias, medios, tecnologías y subjetividades. En la tercera parte de este artículo se exponen las consideraciones metodológicas. Al final se muestran los resultados, destacando los planos de usos y las apropiaciones.
EL PRINCIPIO DE SUPERPOSICIÓN DE ESTADOS, A PARTIR DE LOS ESTADOS DE POLARIZACIÓN DE UNA ONDA MONOCROMÁTICA
Authors: Mendoza Cely Diana Milena , Rozo Clavijo Mauricio
Published: August 2017

En este trabajo se presenta una reflexión alrededor del principio de superposición de estados, partiendo del análisis del concepto de estado dentro del contexto de la mecánica clásica y el contexto de la mecánica cuántica. Además se pretende examinar de qué manera se implementa la idea de superposición, a partir del análisis de los estados de polarización de una onda monocromática. El principio de superposición de estados siendo uno de los principios fundamentales en la mecánica cuántica, tiene un grado de dificultad entre los estudiantes, ya que no es mediato entender que un sistema pueda estar en un estado como una combinación lineal de otros estados. De esta manera se utilizan analogías como herramienta didáctica dentro del contexto clásico y cuántico, con el fin de conceptualizar y establecer las diferencias del principio de superposición desde la teoría clásica y la teoría cuántica.
Modelo matemático y simulaciones numéricas para un problema de frontera libre ecológico-Mathematical model and numerical simulations for a free boundary problem of ecological
Authors: Trejos-Angel Deccy Y. , Ramírez-Céspedes Oscar A.
Published: August 2017

En este artículo se estudia una aproximación numérica del Problema de Frontera Libre (PFL) de un sistema de ecuaciones diferenciales de tipo parabólico unidimensional, asociado con la evolución de la interface, que describe la partición regional de dos grupos de individuos de una misma especie que interactúan en un límite espacial para obtener sus propios hábitats y que es a priori totalmente desconocido. Considerando la dinámica local del sistema, el esquema implícito de diferencias finitas es utilizado, obteniendo así un sistema algebraico no lineal de ecuaciones en cada paso de tiempo. Finalmente, algunas simulaciones de la distribución de densidad poblacional y de la evolución de la frontera libre conforme al tiempo son exhibidas en diferentes escenarios, en base a un algoritmo propuesto e implementado en MATLAB, esto permite validar el modelo matemático PFL.
El rol del profesor y la actividad demostrativa: Una experiencia de aula empleando Geogebra
Authors: Mejía Cristina , Molina Oscar
Published: August 2017

En esta experiencia de aula presento un ciclo didáctico que forma parte deltrabajo de grado que estoy desarrollando para optar por el título de maestríaen Docencia de las Matemáticas. Pretendo exponer una experiencia en laque se analiza el rol del profesor, bajo la teoría de la Mediación Semióticay fundamentado en la aproximación metodológica para la enseñanza delgrupo Æ•G. Tal ciclo planteado en un aula de octavo grado, favorece laconstrucción de un sistema teórico local y se emplea un software de geometríadinámica como artefacto.
Dotando de sentido el algoritmo de la división a partir de una trayectoria de aprendizaje que parte de lo concreto para llegar a lo simbólico
Authors: Díez Fonnegra Carlos Alberto , Pantano Mogollón Oscar Leonardo , Pantano Mogollón Leidy Viviana
Published: August 2017

El taller titulado dotando de sentido el algoritmo de la división a partir deuna trayectoria de aprendizaje que parte de lo concreto para llegar a lo simbólicopretende enseñar esta propuesta de innovación que se ha construidoen el proyecto “Matemáticas para la vida” de la Fundación para el DesarrolloEducativo y Pedagógico. Esta propuesta ha sido diseñada con el propósito dedotar de sentido el aprendizaje del algoritmo de la división, evidenciando lalógica en que se sustenta, además de la correcta aplicación de los diferentespasos que lo componen. Lo anterior se realiza a través de la utilización dematerial concreto y la delimitación de una trayectoria de aprendizaje.
EL PARQUE DE DIVERSIONES COMO LABORATORIO DE FÍSICA MECÁNICA.
Authors: Murillo Castañeda Xiomara Del Pilar , Reyes Jaime Duvan
Published: August 2017

El presente trabajo muestra los resultados obtenidos en el aprovechamiento de las instalaciones de un parque de diversiones para la apropiación de conceptos físicos tales como; movimiento circular, trabajo y energía, entre otros, vistos como una práctica de laboratorio desde la misma experiencia. Para esto se diseñó y aplicó un material guía; usado como medio de aprendizaje, que relaciono la teoría, la experiencia y las temáticas de estudio. La experiencia se desarrolló con un grupo de estudiantes de de física de mecánica uno de la universidad distrital Francisco José de Caldas de Bogotá-Colombia, en sesiones tanto en el aula de clase como en el parque de diversiones y fue evaluada entres momentos (antes, durante y después de la visita al parque). Los análisis de resultados y conclusiones muestran el nivel de desarrollo en las competencias, conceptos, dimensiones del conocimiento y fortalezas del proceso, evidenciando un avance en la significación y construcción de los elementos tratados
Potencial antifúngico de quitosanases extracelulares de Fusarium solani FA14 contra os fitopatógenos Aspergillus niger, Colletotrichum gloeosporioides e Lasiodiplodia theobromae
Authors: Bezerra Neto Samuel Alves , Da Costa Lorena Nogueira Frota , Magalhães Erlândia Alves , Batista Francisco Lucas Alves , Moura Luiz Francisco Wemmenson Gonçalves , Franca Maria Gleiziane Araújo , De Paiva Cristiane Félix , De Lima Daniele Rodrigues , De Oliveira Messias Vital , Guedes Maria Izabel Florindo , Freire Francisco das Chagas de Oliveira , Magalhães Francisco Ernani Alves
Published: August 2017

O trabalho reporta o potencial antifúngico de quitosanases extracelulares do fungo Fusarium solani FA14 contra os fitopatógenos Aspergillus niger, Colletotrichum gloeosporioides e Lasiodiplodia theobromae.  Inicialmente, a cepa foi submetida a ensaio de atividade quitosanase (AQ) e se mostrou ativa, com valor de AQ igual a 1,1 significantemente igual (p<0,05) ao do controle positivo, Penicillium sp. Posteriormente a cepa foi empregada como fonte de quitosanases extracelulares para avaliar o percentual de inibição do crescimento (PIC) dos fungos Aspergillus niger, Colletotrichum gloeosporioides, Lasiodiplodia theobromae. Como resultado, o extrato enzimático de F. solani FA14 se mostrou ativo contra todos os fungos desafiados, com valores de PIC variando de 21 a 64%, significantemente maiores (p<0,05) do que os dos extratos do Penicillium sp. O extrato enzimático do F. solani FA14 apresentou atividade antifúngica mais expressiva contra o fitopatógeno Lasiodiplodia theobromae, com valor de PIC igual a 64%, significantemente maior (p<0,05) do que os dos extratos do Penicillium sp. (PIC = 50%).
Prospecção de enzimas de interesse industrial produzidas por actinobactéria isolado de solo rizosférico da Amazônia
Authors: De Oliveira Stherfanni Moura , Da Silva Daniele Ferreira , Dos Santos Irla Nogueira , Corrêa Cássia Valéria Pinheiro , Liberal Talita Cunha de Faria , Branco Felipe Lima Corrêa , Colares Cristiane Nayara Jati , De Araújo Janete Magali , De Amorim Elba Lúcia Cavalcanti , Mui Tsai Siu , Ishida Juliane Karine , Escher Silvia Katrine Silva
Published: August 2017

Enzimas produzidas por micro-organismos tem despertado o interesse da indústria biotecnológica por sua vasta possibilidade de aplicação em diversos processos industriais devido sua estabilidade térmica e química. As actinobactérias são reconhecidas pelo seu potencial na produção de diversos metabólitos bioativos de estrutura química e ação biológica diversificados. Neste estudo foi isolado uma linhagem de actinobactéria rizosférica, caracterizada através de morfologia e métodos moleculares e avaliado o potencial enzimático através da produção de enzimas de interesse industrial. A linhagem de actinobactérias corresponde ao gênero Microbacterium xylaniliticum e apresenta alto potencial de produção de enzimas de interesse para a indústria de alimentos como lipases (IE=3,4), pectinases (IE=2,2) e esterases (IE=2,0), além da produção de hemolisina e L-glutaminase que apresenta propriedades anti-tumoral.
Avaliação da síndrome de burnout em servidores da guarda municipal de Fortaleza
Authors: De Freitas Melo Cynthia , Mourão Thais Helena  Ramos Queiroz
Published: August 2017

O profissional de defesa civil, que possui um trabalho que sempre foi considerado nobre, sofre com os custos emocionais eminentes de sua profissão, o que pode resultar em agravos como a síndrome de burnout, um esgotamento profissional. Desse modo, a presente pesquisa objetiva avaliar se os profissionais da Guarda Municipal de Fortaleza (GMF) apresentam a síndrome de burnout. Por meio de um estudo correlacional contou-se com uma amostragem não probabilística por conveniência composta por 147 servidores da GMF que responderam a Escala Maslach Burnout Inventory – Human Service Survey (MBI – HSS) e um questionário sociodemográfico. Os dados foram analisados por meio de estatística descritiva, com apoio do software Statistical Packageof Social Sciences for Windows (SPSS). Como resultados, verificou-se que os guardas municipais apresentam índices moderados com sinal de alerta de exaustão emocional (M = 22,23; DP = 14,55), despersonalização (M = 8,15; DP = 7,69) e realização profissional (M = 32,63; DP = 10,33). Contempla-se ainda que 35 participantes (23,80%) apresentam a combinação de altos níveis de exaustão emocional e despersonalização. Desses, 26 participantes (17,70%) apresentam, além dos altos níveis de exaustão emocional e despersonalização, baixo nível de realização profissional; configurando-se o quadro de burnout. Nessa perspectiva, conclui-se que os profissionais da guarda municipal apresentam burnout ou risco de adoecimento, fazendo-se necessárias intervenções de prevenção e recuperação.
Avaliação da atividade genotóxica, citotóxica e antimicrobiana da infusão das folhas de Spondias purpurea L.
Authors: Santos Roberta , Santos Regineide , Marisco Gabriele
Published: August 2017

O uso de plantas medicinais cada vez mais é mostrado como uma fonte alternativa para tratamento de doenças. Este trabalho visou determinar o nível genotóxico e citotóxico da infusão das folhas de Spondias purpurea L., investigar o potencial antimicrobiano e conhecer o perfil cromatográfico de compostos presentes na infusão. Foram realizados os testes Allium cepa e Artemia salina para avaliar a genotoxicidade e citotoxicidade, respectivamente. Os métodos de difusão em disco e concentração inibitória mínima (CIM) foram usados para determinar a atividade antibacteriana nas bactérias Staphylococcus epidermidis, S. aureus, Escherichia coli, Salmonella enterica sorotipo Choleraesuis, Pseudomonas aeruginosa e Klebsiella pneumoniae. No teste de A. cepa, a análise estatística não indicou diferenças significativas do índice mitótico entre os tratamentos e o controle. O teste de A. salina mostrou que a infusão apresentou toxicidade frente aos náuplios a partir da dose 10µg/mL. Em relação à atividade antibacteriana, houve presença de halos de inibição contra as bactérias S. aureus e E. coli, e quando submetidos ao CIM, a infusão apresentou atividade antibacteriana contra todas as bactérias testadas. Sendo assim, a partir desse estudo pode-se inferir que a infusão (chá) das folhas da planta S. purpurea se mostrou como uma fonte medicinal não genotóxica para o teste A. cepa, bem como uma possível fonte antitumoral indicada pelo teste A. salina, além de uma promissora fonte antibacteriana.
MALDI-TOF Mass Spectrometric Analysis of Zeins Extracted from Maize Seeds
Authors: Ştefănescu Raluca , Băncilă Sabina
Published: August 2017

We report the mass spectrometric analysis of zeins extracted from degreased maize flour with either an aqueous 70% ethanol solution or 60% acetonitrile containing 10 mM dithiothreitol. The analysis was performed on a MALDI-TOF mass spectrometer using α-cyano-4-hydroxycinnamic acid as matrix. The method allowed the detection of α-, β- and γ-zeins, but not δ-zeins and was used for the analysis of zein content in the maize inbred KWS 3381 and in commercial flour at different flour particles sizes: between 710 μm and 1.0 mm, between 250 μm and 355 μm and smaller than 100 μm.
The Properties of Nanosilver – Doped Nanohydroxyapatite Coating On the Ti13zr13Nb Alloy
Authors: Bartmanski M.
Published: August 2017

The aim of this research was to study the properties of nanohydroxyapatite (nanoHAp) and nanohydroxyapatite, doped with nanosilver (nanoHAp/nanoAg), coatings obtained by an electrophoretic deposition process. The suspensions was prepared by dispersing 0.1 g of HAp nanopowder for nanoHAp coatings and 0.1 g of nanoHAp and 0.025 g nanoAg for nanoHAp/nanoAg coatings. The deposition was carried out for 1 min at 50 V voltage followed by drying at room temperature for 24 h and heating at 800°C for 1 h in vacuum. The thickness of the nanoHAp and nanoHAp/nanoAg coatings was found as of about 5 μm. The corrosion behavior tests made by potentiodynamic methods brought out slightly higher values of corrosion current for nanoHAp coatings and nanoHAp/nanoAg coatings as compared to the reference Ti13Zr13Nb specimen. The nanohardness of the nanoHAp coatings achieved 0.020 ± 0.004 GPa and of the nanoHAp/nanoAg coatings 0.026 ± 0.012 GPa. Nanoscratch test of the nanoHAp and nanoHAp/nanoAg coatings revealed an increased Critical Friction (mN) in the presence of nanosilver particles. The wettability angles decreased for nanoHAp/nanoAg coatings comparing to pure nanoHAp coatings on titanium alloy.
Increasing of the Mechanical Properties of Friction Stir Welded Joints of 6061 Aluminum Alloy by Introducing Alumina Particles
Authors: Tashkandi M. A. , Al-Jarrah J. A. , Ibrahim M.
Published: August 2017

The main aim of this investigation is to produce a welding joint of higher strength than that of base metals. Composite welded joints were produced by friction stir welding process. 6061 aluminum alloy was used as a base metal and alumina particles added to welding zone to form metal matrix composites. The volume fraction of alumina particles incorporated in this study were 2, 4, 6, 8 and 10 vol% were added on both sides of welding line. Also, the alumina particles were pre-mixed with magnesium particles prior being added to the welding zone. Magnesium particles were used to enhance the bonding between the alumina particles and the matrix of 6061 aluminum alloy. Friction stir welded joints containing alumina particles were successfully obtained and it was observed that the strength of these joints was better than that of base metal. Experimental results showed that incorporating volume fraction of alumina particles up to 6 vol% into the welding zone led to higher strength of the composite welded joints as compared to plain welded joints.
Lung Cancer in Renal Transplant Recipients
Authors: Jozicic Mirela , Imsirovic Alen , Katalinic Lea , Krtalic Branimir , Jukic Nikolina Basic
Published: August 2017

Introduction. Although the incidence of malignancy has increased after solid organ transplantation, data on lung cancer in this group of patients is scarce. The aim of this study was to determine clinical characteristics and outcome of patients who developed lung cancer after renal transplantation. Methods. Among a cohort of 1658 patients who received a transplant at our institution and were followedup between 1973 and 2014, five patients developed lung cancer. We analyzed risk factors, transplantation characteristics, treatment options and survival. Results. Lung cancer was diagnosed in 5 patients (0.3%). Time to diagnosis after the transplant procedure ranged from 26 to 156 months (mean 115 months). All of them had a smoking history. Tumors were classified as IIB (20%), IIIA (40%), and IV (40%). Histological types included adenocarcinoma (80%) and there was one case of sarcomatoid carcinoma (20%). One patient had concomitant thyroid papillary carcinoma. Radiotherapy was applied in 2 patients, 2 underwent chemotherapy (erlotinib and combination of carboplatinum and etopozide in one patient each), and 2 died within one month after the diagnosis from disseminated malignant disease. Patients with stage IIIA survived 14 and 24 months after the diagnosis. The patient with sarcomatoid cancer underwent thoracotomy with a complete resection, lost his graft function and died 7 months after the diagnosis. Conclusion. Lung cancer is relatively rare malignancy in renal transplant recipients, but associated with high mortality. Smoking is a significant risk factor, thus smoking cessation should be promoted among renal transplant recipients, as well as regular screening for lung cancer.
Knowledge and Attitude Regarding Organ Donation among Medical Students
Authors: Bharambe Vaishaly K. , Rathod Hetal , Angadi Kalpana
Published: August 2017

Introduction. All over the world people on organ transplant waiting lists die due to shortage of donor organs. The success of organ donation program needs education of the population regarding organ donation for which healthcare professionals are most suitable. The present study was taken up to assess the knowledge and attitude of 1st, 2ndand 3rdyear medical students about organ donation. Methods. A specially designed self-administered questionnaire was distributed amongst all willing 1st, 2nd and 3rdyear medical students at our Medical College and later analyzed statistically. Results. A total of 157, 145 and 92 students from each year of medical education respectively gave their consent for participation in the study. Awareness regarding organ donation was found to be 98.7-100%, 69.4% claimed television as their source of information regarding organ donation and 46.7% stated that it is possible for patient to recover from brain death. The awareness regarding eye, liver, heart and kidney donations was found to be 92.4%, 87%, 87% and 97.8%, respectively. 87% of medical students were aware of need for legal supervision, and awareness regarding the existing laws was found to be 57.6%. Conclusion. Medical students had a high level of awareness and a positive attitude towards organ donation. However, knowledge regarding “brain-death”, organs and tissues donated, legislation and ethical issues was poor. A teaching intervention designed to specifically address these issues could help increase the confidence of the health-care professionals and may result finally in increased organ procurement rates.
Bardet Biedel Syndrome: a Rare Cause of Chronic Kidney Disease
Authors: Yildirim Tuba Demirci , Ugur Mehmet Can , Soyaltin Utku Erdem , Akar Harun
Published: August 2017

Bardet Biedl syndrome (BBS) is characterized by obesity, retinitis pigmentosa, hypogonadism, mental retardation and polydactyly. Additionally, renal, cardiac and neurological manifestations may be seen. We report a case of BBS with chronic kidney disease (CKD) at the age of 43.
The South African Adventure Tourism Economy: An urban phenomenon
Authors: McKay Tracey
Published: August 2017

The international adventure tourism literature is remarkably silent on the geographical nature of the industry. This study seeks to provide a geographical analysis of the sector within the context of South Africa. The spatial analysis was undertaken by metropolitan area, secondary towns and small towns, using a dataset of adventure tourism enterprises. It was found that the sector is spatially concentrated and highly urbanised, despite the perception that adventure tourism requires ‘wild’ and outdoor spaces. With many adventure tourism enterprises located in South Africa’s metropolitan areas, it is a hither too unknown sub-sector of the South African urban tourism market. Urban settlements with large populations and a strong general tourism sector form a significant support base for adventure tourism operators. Cape Town is the dominant adventure tourism destination, making it the adventure capital of South Africa. A few small settlements were found to be highly dependent upon the sector for survival.
Can Increasing Dividends be a Symptom of the Financialization of the Polish Economy?
Authors: Kowerski Mieczyslaw
Published: August 2017

Because operationally financialization may be detected by the increase of interest, dividends, or capital gains, the paper tries to answer the question as to whether the increased dividend payments observed in Poland can be a symptom of financialization. Analysis of basic tendencies of changes in propensities to pay dividends, values, structures and payout ratios of companies quoted in the years 1992-2014 on the Warsaw Stock Exchange tend towards the conclusion that the increase of dividend payouts at this time is not a sign of financialization of the economy. But because most of the phenomena connected with the dividend policy of the companies quoted on the WSE show similar tendencies to those of the developed equity markets, this may be a symptom of the financialization of the Polish economy in the future.
Financial Development, Savings and Investment in South Africa: A Dynamic Causality Test
Authors: Muyambiri Brian , Odhiambo Nicholas
Published: August 2017

This study investigates the causal relationship between financial development and investment in South Africa during the period from 1976 to 2014. The study incorporates both bank-based and market-based segments of financial sector development. In addition, composite indices for bank-based and market-based financial development indicators are used as explanatory variables. The study incorporates savings as an intermittent variable – thereby creating a simple trivariate Granger-causality model. Using the ARDL bounds testing approach to cointegration and the ECM-based Granger-causality test, the study finds a unidirectional causal flow from investment to financial development, but only in the short run. In the long run, the study fails to find any causal relationship between financial development and investment. These results apply irrespective of whether bank-based or market-based financial development is used as a proxy for financial sector development. The findings of this study have important policy implications.
A Review of Growth Stage Deficit Irrigation Effecting Sticky Maize Production
Authors: Ha Bui Manh
Published: August 2017

The shortage of water resources influences the future sustainability of sticky Maize (Zea mays L.) production. Deficit irrigation (DI) - a water management strategy - has gained much attention from scientists because of enhanced water use efficiency (WUE). Nonetheless, in reality, when applying this technique, its impact on yield and economic returns should be considered. Through an analytical literature review, this study examined the effect of growth stage DI on Maize production factors, i.e. yield, WUE, and economic returns. The results revealed that Maize’s WUE could be improved with the lowest reduction in yield as water stress was imposed during the vegetative or maturation growth stages. Therefore, the profitable returns could be reached even if the yield was reduced; however, the economic return was sensitive to commodity prices. The present review addressed that the Maize flexible capacities under growth stage water stress presented an opportunity for the optimization of irrigated water and profit preservation by accurately judging the managing time of irrigation implementation.
Synchronizing a Triple Dragline Stripping System in Thick Overburden
Authors: Erdem Bülent , Özkan İhsan , Duran Zekeriya
Published: August 2017

This study addresses the use of combined stripping systems to investigate the technical feasibility of extracting thick coal seams underlying deep overburden strata. The possibility of using multiple draglines in tandem with bucket wheel excavator systems is explored. Pit geometry design alternatives incorporating a triple dragline excavation fleet with bucket wheel excavator-cross pit spreader subsystems (BWE+XPS) are examined. A production simulation algorithm, which emphasizes synchronizing excavator units in the triple dragline system, is developed. The combined methodology is evaluated in Sector-D of the Afşin-Elbistan lignite basin, one of the most important resources for electricity production in Turkey. The results reveal that a combined stripping fleet may successfully perform overburden stripping at the predetermined rate and uncover coal seams.
Effects of Plyometric Training and Beta-Alanine Supplementation on Maximal-Intensity Exercise and Endurance in Female Soccer Players
Authors: Rosas Fabián , Ramírez-Campillo Rodrigo , Martínez Cristian , Caniuqueo Alexis , Cañas-Jamet Rodrigo , McCrudden Emma , Meylan Cesar , Moran Jason , Nakamura Fábio Y. , Pereira Lucas A. , Loturco Irineu , Diaz Daniela , Izquierdo Mikel
Published: August 2017

Plyometric training and beta-alanine supplementation are common among soccer players, although its combined use had never been tested. Therefore, a randomized, double-blind, placebo-controlled trial was conducted to compare the effects of a plyometric training program, with or without beta-alanine supplementation, on maximal-intensity and endurance performance in female soccer players during an in-season training period. Athletes (23.7 ± 2.4 years) were assigned to either a plyometric training group receiving a placebo (PLACEBO, n = 8), a plyometric training group receiving beta-alanine supplementation (BA, n = 8), or a control group receiving placebo without following a plyometric training program (CONTROL, n = 9). Athletes were evaluated for single and repeated jumps and sprints, endurance, and change-of-direction speed performance before and after the intervention. Both plyometric training groups improved in explosive jumping (ES = 0.27 to 1.0), sprinting (ES = 0.31 to 0.78), repeated sprinting (ES = 0.39 to 0.91), 60 s repeated jumping (ES = 0.32 to 0.45), endurance (ES = 0.35 to 0.37), and change-of-direction speed performance (ES = 0.36 to 0.58), whereas no significant changes were observed for the CONTROL group. Nevertheless, compared to the CONTROL group, only the BA group showed greater improvements in endurance, repeated sprinting and repeated jumping performances. It was concluded that beta-alanine supplementation during plyometric training may add further adaptive changes related to endurance, repeated sprinting and jumping ability.
The Physique of Elite Female Artistic Gymnasts: A Systematic Review
Authors: Bacciotti Sarita , Baxter-Jones Adam , Gaya Adroaldo , Maia José
Published: August 2017

It has been suggested that successful young gymnasts are a highly select group in terms of the physique. This review summarizes the available literature on elite female gymnasts’ anthropometric characteristics, somatotype, body composition and biological maturation. The main aims were to identify: (i) a common physique and (ii) the differences, if any, among competitive/performance levels. A systematic search was conducted online using five different databases. Of 407 putative papers, 17 fulfilled all criteria and were included in the review. Most studies identified similar physiques based on: physical traits (small size and low body mass), a body type (predominance of ecto-mesomorphy), body composition (low fat mass), and maturity status (late skeletal maturity as well as late age-at-menarche). However, there was no consensus as to whether these features predicted competitive performance, or even differentiated between gymnasts within distinctive competitive levels. In conclusion, gymnasts, as a group, have unique pronounced characteristics. These characteristics are likely due to selection for naturally-occurring inherited traits. However, data available for world class competitions were mostly outdated and sample sizes were small. Thus, it was difficult to make any conclusions about whether physiques differed between particular competitive levels.
Effects of the Sports Level, Format of the Game and Task Condition on Heart Rate Responses, Technical and Tactical Performance of Youth Basketball Players
Authors: Clemente Filipe Manuel , González-Víllora Sixto , Delextrat Anne , Martins Fernando Manuel Lourenço , Vicedo Juan Carlos Pastor
Published: August 2017

The aim of this study was to analyze the effect of different small-sided and conditioning games (SSCG) with different tactical contents on heart rate responses, technical performance and collective organization of youth basketball players of different performance levels. Twenty male basketball players from U14 (13.7 ± 0.8 years old; 4.2 ± 1.4 years of practice) and U16 (15.3 ± 1.1 years old; 6.4 ± 2.1 years of practice) participated in this research study. The two-way MANOVA revealed that the sports level (p = 0.009;

η
p
2

$ \eta_\rm p^2 $

= 0.151), format (p = 0.001;

η
p
2

$ \eta_\rm p^2 $

= 0.246) and task condition (p = 0.023;

η
p
2

$ \eta_\rm p^2 $

= 0.104; small effect size) had significant main effects on heart rate responses. It was also found that the format (p = 0.001;

η
p
2

$ \eta_\rm p^2 $

= 0.182) had significant main effects on technical performance. A smaller format significantly
increased the heart rate, volume of play, efficiency index and collective density during attacking plays. The SSCG with attacking content statistically increased the heart rate, efficiency index and performance score. Therefore, this study revealed that different SSCGs with tactical content influenced the physiological responses of youth players.