bluuebunny/crossref_metadata_2025_split huggingface dataset:
Role of [18F] Fluoro-2-Deoxy-D-Glucose Positron Emission Tomography/Computed Tomography in the Diagnosis of Tonsillar Carcinoma in a Patient with Multiple Primary Carcinomas
Authors: Fernando Patrick Earl Amparado , Ongkeko Eduardo Erasto Santiago 
Published: April 2019

AbstractTonsillar carcinoma is not easily diagnosed on [18F] fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography (18F-FDG PET/CT) scan; normal, inflamed, and infected tonsils also exhibit increased tracer uptake. We present a case of a 68-year-old male with colon and prostate carcinomas who was referred for a PET/CT scan. He presented with right cervical lymphadenopathy which, on fine-needle biopsy, was found to have atypical cells suspicious for malignancy. On PET/CT, the right cervical lymph nodes appeared hypermetabolic; subsequent excision biopsy revealed metastatic poorly differentiated carcinoma. Increased metabolic activity was also seen in the tonsils, the right more than the left, which was initially ascribed to be inflammatory or physiologic. On magnetic resonance imaging follow-up, however, a more prominent and more enhancing right palatine tonsil was observed, which on histopathology was consistent with squamous cell carcinoma. Determining the maximum standard uptake value ratio between the two tonsils could have been helpful in differentiating squamous cell tonsillar carcinoma from benign asymmetric FDG uptake in this case. On a background of enlarged cervical lymph nodes and known primary carcinomas, uptake in the tonsils should be thoroughly assessed before interpreting it as an inflammatory or physiologic variant, especially if there is asymmetry in FDG uptake.
Is hemi-thyroidectomy adequate in low risk differentiated thyroid cancer?
Authors: Benjamin Justin , Hephzibah Julie , Cherian Anish Jacob , Mathew David , Shanthly Nylla , Oommen Regi 
Published: April 2019

AbstractIn low-risk differentiated thyroid carcinoma (LRDTC), appropriate surgical procedure in terms of hemi/total thyroidectomy (TT) has been an area of debate. The aim was to determine whether in LRDTC patients, hemithyroidectomy would be an adequate treatment, determine incidence of disease in contralateral lobe and evaluate the effect of radioactive iodine ablation (RAIA). Retrospective study was done from 2008 to 2014 at a single institution. Preoperative ultrasound (USG) and histopathology reports of all LRDTC patients following total/completion thyroidectomy were recorded. Details of postthyroidectomy, thyroid whole body scan, and stimulated serum thyroglobulin (sTg) levels were also documented and results analyzed. A total of 114/562 patients met inclusion criteria. Of these, 25/114 (22%) underwent hemithyroidectomy followed by a completion thyroidectomy while remaining 89/114 (78%) underwent TT initially. Preoperative USG detected single-lobe involvement in 44 patients; however, among them, histopathology revealed bilateral lobe disease in 17 (38.6%). There was a significant fall of sTg level following RAIA as compared to that before RAIA in T1b-T2 (P = 0.009 and 0.012, respectively). Median follow-up was 2 years (range: 1–7 years) with no distant metastasis or deaths recorded till 2017, except for one local recurrence 4 years after RAIA. In conclusion, the role of TT in LRDTC patients is important as 46% of patients were found to have tumor in contralateral lobe as well. Significant fall in sTg levels following RAIA justifies RAIA of remnant lobe even in LRDTC (T > 1a). It facilitates early detection of recurrence when sTg alone is used for follow-up.
Improvement in image quality of Tc-99m-based ventilation/perfusion single-photon emission computed tomography in patients with chronic obstructive pulmonary disease through pretest continuous positive airway pressure treatment
Authors: Paludan Jens Peder Dreyer , Andresen Sven Robert , Abrahamsen Jan , Petersen Lars Jelstrup , Høyer Christian 
Published: April 2019

AbstractVentilation/perfusion single-photon emission computed tomography performed using an aerosol of carbon-coated technetium is frequently used for diagnosing pulmonary embolism. Certain patients may suffer from chronic obstructive pulmonary disease (COPD); for such patients, the formation of mucus clots in airways can cause accumulation of the aerosol in the larger airways. This centralized deposition of the aerosol leads to insufficient activity in peripheral lung segments and subsequently results in ventilation images of substandard or even nondiagnostic quality. Continuous positive airway pressure (CPAP) therapy improves airway dynamics and quality of life for COPD patients. We report for the first time the results for two patients for whom initial ventilation scans were of insufficient quality, but diagnostic-quality images were obtained after CPAP therapy.
Multidecadal persistence of organic matter in soils: multiscale investigations down to the submicron scale
Authors: Lutfalla Suzanne , Barré Pierre , Bernard Sylvain , Le Guillou Corentin , Alléon Julien , Chenu Claire 
Published: April 2019

Abstract. Minerals, particularly clay-sized minerals, protect soil
organic matter (SOM) from decomposition by microorganisms. Here we report
the characterization of SOM and the associated minerals over decades of
biodegradation, in a French long-term bare fallow (LTBF) experiment started
in 1928. The amounts of carbon (C) and nitrogen (N) in the study area declined over time for
six fractions (sand, coarse silt, fine silt, coarse clays, intermediate
clays, and fine clays). The C:N ratios of SOM associated with silt fractions
remained constant, whereas the ratios significantly decreased in clays, reaching
very low values in intermediate and fine clays (C:N < 5) after
8 decades of LTBF conditions. X-ray absorption spectroscopy revealed the following: (i) bulk-scale
SOM chemical speciation remained almost constant; (ii) submicron
particulate OM was present in coarse clays, even after 79 years of LTBF
conditions; and (iii) illite particles became progressively SOM-free with time, whereas mixed-layer
illite/smectite and smectites were always associated with OM
throughout the bare fallow treatment. In summary, these results suggest that
clay-sized minerals preferentially protect N-rich SOM and that smectites and
mixed-layer illite/smectite seem to protect associated OM more effectively
than pure illites.
The community atmospheric chemistry box model CAABA/MECCA-4.0
Authors: Sander Rolf , Baumgaertner Andreas , Cabrera-Perez David , Frank Franziska , Gromov Sergey , Grooß Jens-Uwe , Harder Hartwig , Huijnen Vincent , Jöckel Patrick , Karydis Vlassis A. , Niemeyer Kyle E. , Pozzer Andrea , Riede Hella , Schultz Martin G. , Taraborrelli Domenico , Tauer Sebastian 
Published: April 2019

Abstract. We present version 4.0 of the atmospheric chemistry box
model CAABA/MECCA that now includes a number of new features: (i)
skeletal mechanism reduction, (ii) the Mainz Organic Mechanism (MOM) chemical mechanism for
volatile organic compounds, (iii) an option to include reactions from
the Master Chemical Mechanism (MCM) and other chemical mechanisms,
(iv) updated isotope tagging, and (v) improved and new photolysis
modules (JVAL, RADJIMT, DISSOC). Further, when MECCA is connected to a
global model, the new feature of coexisting multiple chemistry
mechanisms (PolyMECCA/CHEMGLUE) can be used. Additional changes have
been implemented to make the code more user-friendly and to facilitate
the analysis of the model results. Like earlier versions,
CAABA/MECCA-4.0 is a community model published under the
GNU General Public License.
RUBBER NANOCOMPOSITES REINFORCED WITH SINGLE-WALL AND MULTIWALL CARBON NANOTUBES FOR INDUSTRIAL APPLICATIONS
Authors: Kumar Vineet , Lee Dong-Joo 
Published: April 2019

ABSTRACT
Nanofillers of type carbon nanotubes (CNTs) were investigated as reinforcing agents in silicone rubber matrix. Two types of CNT, namely, single-wall CNTs (SWCNTs) and multiwall CNTs (MWCNTs), were tested as reinforcing agents in rubber matrix. These CNTs were characterized with different purity, morphology, and sonication treatment (MWCNTs). Rubber nanocomposites were prepared by mixing room temperature vulcanized (RTV) silicone rubber with CNTs. At a filler loading of 3 phr, the modulus increased by 190% for specimens with MWCNTs and 150% for specimens filled with SWCNTs. Sonication was used to de-bundle the MWCNT aggregates into individual particles and to improve filler dispersion in the rubber matrix. The resistance of the MWCNTs was almost 750 times lower than that of the SWCNTs at 3 phr. The sonicated MWCNTs (2.2 kΩ) show lower electrical resistance than the pristine MWCNTs (3 kΩ) at 2 phr. These improvements could be useful for new devices such as flexible electrodes or actuators.
Potencial de mercado de frutas deshidratadas en el municipio de Managua, departamento de Managua
Authors: López Acevedo Jefry Joel 
Published: April 2019

Las frutas deshidratadas son una opción a la problemática de pérdidas de cosechas debido a la falta de valor agregado en la producción frutícola nicaragüense, teniendo como ventaja competitiva que este producto tiene mayor vida de anaquel, se conserva manteniendo su valor nutritivo y disponibilidad de la fruta durante todo el año. Basados en la problemática planteada, se ha identificado una oportunidad de negocio. Por este motivo se realizó el presente estudio, que consiste en identificar el mercado de frutas deshidratadas. Para el estudio se utilizaron las técnicas de encuesta y de observación por medio de instrumentos básicos de cuestionarios, para su posterior recolección de datos, que brindaron la información primaria. En el municipio de Managua se analizó la oferta, demanda y precios de la fruta deshidratada. Se determinó que existe potencial de mercado, la demanda insatisfecha, los consumidores prefieren adquirir este producto en supermercados, al estudiar el rango de edades y actividad económica se identificó que el 40% son estudiantes. En cuanto a gustos se encontró la piña como preferencia de consumo con un 65% y como principal competidor nacional se encuentra los productos Masaya.
Las actividades dirigidas en centros deportivos y su valor como elemento de idelización
Authors: Pérez-Villalba M. , García-Fernández J. , Gómez-Chacón R. , Fernández-Martínez N. 
Published: April 2019

El objetivo de este estudio fue determinar la demanda de actividades dirigidas (AADD) por parte de las personas abonadas a centros deportivos españoles y determinar si las AADD se presentan como un elemento de fidelización de la instalación. Un total de 15.778 clientes de 97 centros deportivos de ciudades de más de 100.000 habitantes fueron encuestados a través de un cuestionario diseñado ad hoc. Lo resultados muestran una mayor demanda de AADD entre el colectivo de mujeres (77,5%) frente a los hombres (45,9%), y entre las franjas de edad comprendidas entre los 25 y 64 años superando el 60%. Los datos obtenidos confirman que las AADD funcionan como un elemento de fidelización entre el colectivo de personas que hacen AADD de manera regular, presentandouna mayor permanencia, y un mayor volumen de días y de horas semanales de asistencia.
The aim of the study was to determine the demand of group exercise training (GET) by members of Spanish sports centers, and determine if GET could be considered as a retention element. A total of 15,778 members from 97 sports centers in cities with more than 100,000 inhabitants were surveyed through an ad hoc questionnaire. The results show a higher demand for GET among the group of women (77.5%) than men (45.9%), and between ages 25 and 64 exceeding 60%. The data obtained confirm that GET work as a loyalty element among the group of people who attend GET on a regular basis, presenting a greater membership tenure, and a greater volume of attendance days and weekly hours.
La satisfacción de los usuarios de actividades dirigidas de los Centros deportivos municipales de Barcelona
Authors: Aparicio Chueca P. , Elasri Ejjaberi A. , Triadó Ivern X. M. 
Published: April 2019

El objetivo de este trabajo es el de identificar y analizar los factores que subyacen en el nivel de satisfacción de los usuarios de centros deportivos municipales que realizan actividades dirigidas y compararlo con aquellos usuarios que no hacen uso de este servicio. Los datos fueron recogidos de una encuesta entre los clientes de centros deportivos municipales, de los que 536 sujetos manifestaron realizar actividades dirigidas en el centro. Las mujeres y los usuarios con un nivel de estudios secundarios son los que más utilizan estos servicios. Un análisis factorial aplicado revela tres dimensiones que contribuyen a la satisfacción, en ambos casos, pero la composición de cada uno de ellos es diferente. Finalmente, del análisis de regresión múltiple se desprende que un gerente debe prestar atención, en primer lugar, a la calidad de las instalaciones y la comunicación ya que fueron el mejor predictor de la satisfacción.
The aim of this work is to identify and analyze the factors that underlie the level of satisfaction of users of municipal sports centers that conduct directed activities and compare it with those users who do not use this service. Data were collected in a survey among users of municipal sports centers, of which 536 subjects stated that they carried out directed activities at the center. Women and users with a high school level are the ones who use these services the most. An applied factor analysis reveals three dimensions that contribute to satisfaction, in both cases, but the composition of each of them is different. Finally, the multiple regression analysis shows that a manager must pay attention, first of all, to the quality of the facilities and communication since they were the best predictor of satisfaction.
Evolución de las licencias federativas de pádel en Andalucía (2009-2016)
Authors: Fernández-Martínez N. , Gómez-Chacón R. , Bernal-García A. , Pérez-Villalba M. 
Published: April 2019

Los últimos años del deporte en España muestran un alto crecimiento en la práctica del pádel (Gómez-Chacón, Pascua-Barón y Fernández–Martínez, 2017). El pádel, es el deporte de raqueta más practicado semanalmente por la población Española(Consejo Superior de Deportes, 2015).Asimismo, y siguiendo la línea de otros autores, el pádel, es el deporte que más se ha desarrollado en los últimos 23 años con un crecimiento del 1.947,41% (López, 2017).El objetivo de este estudio es conocer la evolución de las licencias federativas de pádel en Andalucía durante los años 2009-2016, para poder certificar que todos los datos encontrados coinciden con lo que han afirmado diversos autores y organismos públicos. Se consultó la base de datos de la federación Andaluza de Pádel. Todos los datos extraídos en la bibliografía consultada no hacen más que indicar que el pádel es uno de los deportes más emergentes y con mayor crecimiento y evolución del siglo XXI.
The last years of sport in Spain show a high growth in the practice of paddle (Gómez-Chacón, Pascua-Barón and Fernández-Martínez, 2017). The paddle, is the sport of racket more practiced weekly by the Spanish population (Superior Council of Sports, 2015). Likewise, and following the line of other authors, paddle is the sport that has most developed in the last 23 years with a growth of 1,947.41% (López, 2017). The objective of this study is to know the evolution of the federative paddle licenses in Andalusia in absolute category during the years 2009-2016 in order to certify that all the data found coincide with what various authors and public bodies have affirmed. The database of the Andalusian federation of Paddle was consulted. All the data extracted in the consulted bibliography do not do more than indicate that the paddle is one of the most emergent sports and with greater growth of the XXI century.
Análisis de incidentes por resbalones ocurridos en piscinas de España, 2000-2015
Authors: Gámez de la Hoz J. , Padilla-Fortes A. , Padilla-Ruiz M. 
Published: April 2019

Las piscinas son una fuente común de caídas inducidas por resbalones, con importantes costes socioeconómicos y severas consecuencias para la salud de las víctimas. El objetivo principal fue examinar información sobre factores de riesgo y conocer los mecanismos causales de sucesos lesivos inducidos por resbalamientos asociados a piscinas de uso colectivo. Se realizó un estudio observacional de tipo descriptivo a partir de fuentes judiciales con emplazamiento en la población española para el período 2000-2015. El mecanismo causal más habitual fue la caída al mismo nivel (79,2%) inducida por un resbalón cuando el sujeto caminaba (65,6%) sobre un suelo resbaladizo (35,2%) en presencia de agua (64,8%), siendo el andén que circunda el vaso la localización más citada (19,2%). Los resbalamientos son prevenibles y la aplicación efectiva de normas internacionales sobre superficies resistentes al deslizamiento puede dotar mayores garantías para la protección de la salud de los usuarios.
Swimming pools are a common source of slip-induced falls, with a high socioeconomic cost and severe consequences for victim’s health conditions. The main objective was to examine risk factors and know mechanisms of slip-induced injuries associated with public swimming pools. A descriptive observational study of the Spanish population was conducted, using data from judicial sources from 2000 to 2015. In most cases, the common mechanism of the injury was a slip-induced fall at the same level (79.2%) originated while the subject was walking (65.6%) on a slippery floor (35.2%) with water (64.8%), being walkable area around a pool basin was the most cited location (19.2%). Slips are preventable and the effective application of international standards regarding slide-resistant surfaces could provide more reliable guarantee to protect the user health in swimming pools.
Situación de la Certificación en Organizaciones de Gestión de Instalaciones Deportivas en España
Authors: Grimaldi-Puyana M. , Sánchez-Oliver A. J. 
Published: April 2019

El objetivo de este estudio fue analizar y describir la situación actual de la calidad en las organizaciones deportivas de gestión de instalaciones deportivas españolas. De un total de 5.065 registradas bajo el código nacional de actividades económicas 9311, se procedió al estudio pormenorizado de cada una de las organizaciones a través de la observación sistemática, para finalmente seleccionar a 35 organizaciones con certificación de calidad ISO9001, ISO14001, OHSAS 18001y EFQM. Los resultados muestran una escasa implantación de calidad en las organizaciones de gestión de instalaciones deportivas, siendo las certificaciones con mayor implantación, el sistema de gestión de calidad (ISO 9001) y el sistema de gestión medioambiental (ISO 14001).
The aim of this study was to analyze and describe the current situation of quality in sports management organizations of Spanish sports facilities. Out of a total of 5,065 registered under the national code of economic activities 9311, a detailed study of each of the organizations was carried out through systematic observation, to finally select 35 organizations with quality certification ISO9001, ISO14001, OHSAS 18001and EFQM. The results show a low quality implantation in the management organizations of sports facilities, being the certifications with greater implementation the quality management system (ISO 9001) and environmental management system (ISO 14001).
Evaluación de la motricidad y el carácter de los alumnos de 4 y 5 años: un estudio piloto
Authors: López Esparcia R. M. , Prieto-Ayuso A. , León González M. P. , Gil-Madrona P. 
Published: April 2019

El objetivo fue evaluar la motricidad gruesa y el carácter en niños de 4 y 5 años. Para ello, se seleccionaron 23 participantes y se aplicaron la subprueba locomotriz y la de control de objetos, ambas pertenecientes al Test of Gross Motor Development (TGMD 2), así como una rúbrica sobre carácter (respeto, cooperación, sensibilidad, liderazgo, trabajo en equipo y autocontrol). Los resultados muestran que las chicas son mejores en la subprueba locomotriz, mientras que los chicos destacan en el control de objetos. En general, los niños tienen menos habilidad en el salto extendido y en la tarea de atrapar objetos. En cuanto al carácter, los chicos son peores en el liderazgo y las chicas en el trabajo en equipo. Por tanto, se concluye la necesidad de hacer hincapié específicamente en aquellos aspectos donde menor puntuación obtuvieron. Como prospectiva de investigación, este trabajo debe ser realizado con muestras más grandes para conocer si los resultados se mantienen similares.
The aim was to assess gross motor and character in children aged 4 and 5 years old. For this, 23 participants were selected and the locomotive and object control sub-tests were applied, both belonging to the Test of Gross Motor Development (TGMD 2), as well as a rubric of character (respect, cooperation, sensitiveness, leadership, teamwork, and self-control). Results show that girls are better in the locomotive subtest, while boys excel in the object control. In general, boys have less skill in the extended jumping and in the objects catch task. In terms of character, boys are worse in leadership and girls in teamwork. Therefore, it is important to emphasize especially those motor skills and emotional aspects where children score lower. As research prospect, this study must be conducted with a bigger sample to know if these results remain similar.
Perfil del usuario de la fundación deportiva municipal de valencia y sus hábitos de práctica deportiva
Authors: Ros-Castello P. , Calabuig Moreno F. , Gómez Tafalla A. M. 
Published: April 2019

El objetivo de la presente investigación es analizar el uso de las instalaciones de la Fundación Deportiva Municipal de Valencia y determinar el perfil del usuario de las mismas. Para ello se recogen un total de 727 cuestionarios vía online formados por diferentes secciones extraídas a partir de la bibliografía existente. Los resultados muestran una alta satisfacción e intenciones futuras de los usuarios. Además, los usuarios muestran una mayor pasión armoniosa por el deporte en comparación con la pasión obsesiva. La mayor parte de la práctica deportiva se concentra entre semana y a partir de las 19:00h. Los usuarios de las instalaciones en su mayoría tienen trabajo y estudios universitarios. El uso principal que se hace de las instalaciones es de forma libre e individual y los motivos principales de práctica deportiva son la salud y el bienestar.
The aim of the present study is to analyze the use of the Sports Municipal Foundation of Valencia and to determine its user’s profile. For that purpose 727 online questionnaires were collected, formed by different sections extracted from the existing bibliography. Results show users’ high satisfaction and future intentions. Moreover, users show a greater harmonious passion for sport than compared to the obsessive passion. The most of the sport practice take place form Monday to Friday and after the 19:00h. Facilities users are mainly employed and have university studies. The main use of the facilities is a free and individual use and the main reasons of sport practice are health and wellness.