bluuebunny/crossref_metadata_2025 huggingface dataset:
Characterization of Yttrium-Doped Barium Zirconate Nanocrystalline Powder Prepared by Spray Pyrolysis
Authors: Muccillo Eliana Navarro Santos , Gonçalves M.D. , Grosso Robson L. , Muccillo R.
Published: June 2014

Investigation on polycrystalline electroceramics involves the synthesis, the consolidation and the analysis of the electrical behavior, along with careful evaluation of the final microstructure. The synthesis of ceramic powders with controlled characteristics is crucial in the study of materials with optimized properties. Distinct properties may be found in ceramic materials prepared by the several existing methods, due to chemical and phase homogeneities, and to the particle size distribution or medium particle size. In this work, yttrium-doped barium zirconate proton conductor was synthesized by spray pyrolysis, and characterized by several techniques aiming identifying the influence of some parameters of this method of synthesis with particle characteristics. Nanocrystalline powders synthesized at 600-700oC were found to be cubic and single phase. Moreover, depending on the gas flow and furnace temperature, spheroid and porous or cubic and solid particles may be obtained.
Morphological Characterization by SEM, TEM and AFM of Nanoparticles and Functional Nanocomposites Based on Natural Rubber Filled with Oxide Nanopowders
Authors: Silva Bellucci Felipe , Salmazo Leandra Oliveira , Budemberg Eduardo Roque , Budemberg Eduardo , Aroca Ricardo Flavio , de Lima Nobre Marcos Augusto , Job Aldo Eloizo
Published: June 2014

Nanocomposites were prepared from mixture of different concentrations of ferroelectric nanoparticles in an elastomeric matrix based on the vulcanized natural rubber. The morphological characterization of nanocomposites was carried out using Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and Atomic force microscopy (AFM). The nanocrystalline ferroelectric oxide is potassium strontium niobate (KSN) with stoichiometry KSr2Nb5O15, and was synthesized by the chemical route using a modified polyol method, obtaining particle size and microstrain equal to 20 nm and 0.32, respectively. These ferroelectric nanoparticles were added into the natural rubber in concentrations equal to 1, 3, 5, 10, 20 and 50 phr (parts per hundred of rubber) forming ferroelectric nanocomposites (NR/KSN). Using morphological characterization, we identified the maximum value of surface roughness at low concentrations, in particular, sample with 3 phr of nanoparticles and factors such as encapsulation and uniformity in the distribution of nanoparticles into the natural rubber matrix are investigated and discussed.
Synthesis and Characterization of Calcium Phosphate from Fossilized Calcareous Shells for Biomedical Applications
Authors: Silva Daiara F. , Camargo Nelson Heriberto Almeida , Dalmônico Gisele M.L. , Corrêa Pricyla , Schneider Mônica S. , Gemelli Enori
Published: June 2014

Calcium phosphate nanostructured biomaterials are a new class of biomaterials, they are clinically promising for bone tissue reconstitution. That is because this new class of biomaterials provides new microstructural features, nanostructural, surface area and micropore grains of different conventional biomaterials capable of offering new expectations in the bone tissue reconstitution and formation process [1, 2, 3, 4, 5]. Studies performed in vivo by different authors indicate these bioceramics as innovative biomaterials and may, in the near future, present themselves as biomaterials which can replace conventional biomaterials autogenous, alogenous and exogenous treatments on bone structure of the human skeleton. The calcium phosphate compositions produced from natural raw materials also have being promising for biomedical applications for these new biomaterials that have physical morphology and biological characteristics very similar to the bone tissue [4, 5, 6].
Preparation and Characterization of Hybrid Fe3O4/APTES for Immobilization of GOX
Authors: França Tatiana C.P. , Dantas Bruno B. , Viana Kaline M.S. , Santos Patrícia Tatiana Araújo , Costa Ana Cristina Figueiredo de Melo
Published: June 2014

This work aims to obtain hybrid from nanoparticles of Fe3O4 modified surface with 3-aminopropyltriethoxysilane (APTES) for their use in the immobilization of glucose oxidase (GOX). The obtained material was characterized by XRD, FTIR, SEM, sedimentation test and magnetic separation. Based on the obtained results it showed that the surface modification with APTES was successfully achieved and that the APTES did not changed the magnetic characteristic neither the structure of Fe3O4, indicating that the hybrid material obtained is promising for immobilization of GOX.
Titanium Substrate Surfaces Coated with Hydroxyapatite by Magnetron Sputtering
Authors: Balestra Roseli Marins , Ribeiro Alexandre Antunes , de Oliveira Joao C. , Cavaleiro Albano , Oliveira Marize Varela
Published: June 2014

The deposition of hydroxyapatite coatings on titanium via sputtering techniques has been quite studied on commercial dense substrates, for use as a biomaterial. In this work, porous titanium samples produced by powder metallurgy and commercially dense titanium sheet, used as control, were used as substrates. The coatings were deposited by radio frequency magnetron sputtering using a hydroxyapatite target in argon atmosphere with different deposition times. Samples characterization was performed by Optical Microscopy, Scanning Electron Microscopy/Energy Dispersive Spectroscopy and low-angle X-ray Diffraction. Hydroxyapatite coating depositions were obtained on both titanium substrates. The results indicated the potential of this methodology for titanium substrates with homogeneous hydroxyapatite coatings.
Properties of Clay Ceramic Incorporated with Red Mud
Authors: Babisk Michelle Pereira , Altoé Thalissa Pizetta , de Oliveira Lopes Henrique Junio , do Prado Ulisses Soares , Gadioli Monica Castoldi Borlini , Monteiro Sergio Neves , Vieira Carlos Mauricio Fontes
Published: June 2014

The red mud is a well known insoluble residue generated in the Bayer process to benefit bauxite ores. This residue is composed of ceramic related compounds such as iron oxide, sodium aluminum silicates, carbonates, calcium aluminates and titanium dioxide. The incorporation of industrial residues in clay ceramics has been extensively investigated, not only as an environmentally correct solution but also as an economic way to save raw materials. Therefore, the present work evaluated the properties of clay ceramics incorporated with up to 40 wt% of red mud. Clay bodies with different percentages of red mud were press-molded and fired at 750, 950 and 1050°C. The evaluated technological properties were linear shrinkage, water absorption and mechanical strength. Sensible changes in such properties were found with red mud addition. In particular, the ceramic fired at 1050°C displayed favorable water absorption with red mud incorporation.
Characterization of a Red Mud and a Clay Body for Ceramic Fabrication
Authors: Babisk Michelle Pereira , Altoé Thalissa Pizetta , de Oliveira Lopes Henrique Junio , do Prado Ulisses Soares , Gadioli Monica Castoldi Borlini , de Almeida Luciana Lezira Pereira , Monteiro Sergio Neves , Vieira Carlos Maurício Fontes
Published: June 2014

Red mud is a specific term applied for a residue generated during the processing of aluminum ores, mainly bauxite in the Bayer process, to produce alumina (Al2O3). In several countries where bauxite is mined and processed, distinct red muds are generated in ever growing amounts and becoming an environmental problem. This problem is also affecting the large bauxite processing plants in Brazil and a possible solution for the red mud is its addition to clay ceramics. Before an industrial scale addition is implanted, the specific red mud needs to be characterized for compatible behavior with the ceramic clay matrix. Therefore, the objective of the present work was to characterize a red mud generated in Brazil for an eventual addition to clay ceramic. This was conducted through the determination of density, chemical and mineralogical composition as well as size distribution and microscopic observation of particles. The results indicated that the specific red mud investigated is compatible with clays and has a potential for addition in common red ceramics.
Evaluation of Co and CO2 Emitted in the Firing of Clay Ceramics Incorporated with Elephant Grass Ash
Authors: da Silva Aline Marcia Ferreira Dias , Faria Roberto Trindade , Toledo Rosane , Candido Veronica Scarpini , Monteiro Sergio Neves , Vieira Carlos Maurício Fontes
Published: June 2014

Several environmental studies have been dedicated to the correct management of industrial residues. The conventional clay ceramic productive sector became, in past decades, a growing alternative for these residues through their incorporation in products such as bricks and tiles. The firing temperatures for ceramic sintering usually transform the incorporated residue into an inert microstructural phase. In some cases, the residue may even improve the ceramic properties. However, during the firing stage, polluting gases might be emitted causing environmental impact. Therefore, the objective of the present work was to evaluate the gases emitted during sintering of a clay ceramic incorporated with 10 and 20 wt% of elephant grass ashes. The emission was investigated for firing temperature in the interval from 250 to 1100oC and the gases analyzed by photothermic technique. The ash incorporation promoted a significant increase in the emission of greenhouse gases such as CO and CO2.
Environmental Durability of Soil-Cement Block Incorporated with Ornamental Stone Waste
Authors: Carvalho Aline , de Castro Xavier Gustavo , Alexandre Jonas , Pedroti Leonardo Gonçalves , de Azevedo Afonso Rangel Garcez , Vieira Carlos Maurício Fontes , Monteiro Sergio Neves
Published: June 2014

The recycling of industrial wastes such as those produced during processing of ornamental stones is a relevant procedure to mitigate the possibility of environmental pollution. In the present work the durability of soil-cement blocks incorporated with an ornamental granite stone waste was investigated by means of water immersion durability tests as indicated by the Brazilian norm. Preliminarily, the granite waste was characterized by its chemical composition, particle size and X-ray diffraction. The incorporation was carried out in a mixture with limestone, sand, water and cement. After the durability tests, the soil-cement block were tested for the change in strength and water absorption. The results showed a loss in strength for 90 days of immersion cycles together with a relatively small gain in water absorption. The block composition with 60% of waste was able to attend the norm by apparently developing less porosity than the 65% waste incorporated block.
Evaluation of the Addition of Electric Arc Furnace Dust in Hot Metal Changind the Type of the Crucible
Authors: de Paulo Ferreira Marques Sobrinho Vicente , de Oliveira José Roberto , Vieira Estéfano Aparecido , Telles Victor Bridi , Grillo Felipe Fardin , Tenório Jorge Alberto Soares , Espinosa Denise Crocce Romano
Published: June 2014

This research aims to assess the incorporation of mass of the electric arc furnace dust (EAFD) by addition in hot metal (1.78% Si) at a temperature of 1,400°C changing the type of the crucible. The EAFD is from a steel mill producer of long steel. The EAFD will be added in the form of briquette. Previously, the EAFD is going to be characterized using the following techniques: chemical analysis, size analysis, X-ray diffraction, scanning electron microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) microanalysis. The achievement of fusion experiments in laboratory scale, is going to take place in a vertical tubular furnace with temperature control. The fusion experiments to assess the incorporation of the EAFD mass are going to use three kinds of crucibles. After cooling the furnace to room temperature, it will be done the hot metal and the slag weighing to do a mass balance. A flow of inert gas (argon) is going to be maintained inside the furnace during the experiments.
Characterization of Converter Refractories for Recycling
Authors: Quaranta Nancy E. , Caligaris Marta G. , Díaz Osmell
Published: June 2014

The lining of steel converters and ladles consists of magnesia-graphite refractories. The steel industry is the biggest consumer of refractories, about 70% of the total production of these materials. For this reason, it is very important to recycle them for the production process. The aim of this work is to carry out the physicochemical and microstructural characterization of post-mortem magnesia-graphite refractories from a steel plant, in order to achieve their incorporation to the manufacture of ceramic masonry to be used in the construction industry. The obtained results indicate acceptable properties in these industrial wastes in relation to the physicochemical and environmental characteristics and the feasibility of reusing them in the mentioned applications.
Characterization of BOF Dust for Pellets Production Used in Blast Furnace
Authors: da Rocha Elisa Pinto , de Castro J.A. , Araujo G.M. , Martins L.
Published: June 2014

In order to minimize the incorrect disposal of dust generated in the basic oxygen furnace (BOF) converter and to generate a new application for this solid residue, a simple characterization route was proposed. The powder residue is used to produce self-reducing pellets and can be used in the blast furnace process. The chemical analysis of the dust was carried out using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), and some elements as Fe, Si, P, Al and Ca were detected in high amount, as the iron which achieved about 65% concentration. Moreover, the X-ray diffraction analysis indicated that the iron was found in the phases, mainly, as magnetite (Fe3O4) and hematite (Fe2O3) while quartz (SiO2) and calcite (CaCO3) were the major impurities. The spectrometry dispersive energy (SDE) analysis confirmed the presence of such elements and the images obtained by SEM allowed visualizing the morphology of the particles. The average of particle size distribution of the dust was 0.053 mm which is suitable for self-agglomerates pellets.
Sinthesys of Mullite Using Microwave Furnace from Kaolin and Alumina Residue
Authors: da Silva Michelle Félix , da Silva Valmir José , Menezes Romualdo Rodrigues , de Lima Santana Lisiane Navarro , Neves Gelmires Araújo , Gonçalves Wherllyson Patrício
Published: June 2014

Heating with microwave power is a process in which the materials take up electromagnetic energy volumetrically and turn it into heat inside a piece. This is the great difference from the conventional method, where the heat flows between objects by means of conduction, radiation and convection, in which the surface of the materials is heated first, and then the heat is transferred to the interior of the piece, thus forming a temperature gradient. On the other hand, microwave heating generates heat first inside the piece, heating the whole volume later. [1]
Evaluation of the Thermic Behavior of the Coal as a Byproduct through the Low Temperature Conversion Process – LTC of the Sewage Sludge
Authors: Filho Francisco Ferreira Dantas , Morais C.R.S. , Dantas G.M. , Dantas F.S.B. , Lima I.S. , Andrade D.N.C.
Published: June 2014

Brazil follows the global trend to seek viable alternative energy sources that can improve the quality and secure supply of energy with environmental sustainability, allied to the necessity of facilitating a fitting end to the sludge treatment plants sewage. The biomass present in SS is emerging as an alternative to the country's energy matrix, through the Low Temperature Conversion process – LTC of the sludge in the production of biofuel (biooil and coal). This article aims to characterize the coal obtained through the Low Temperature Conversion and evaluate the thermal behavior. In this study physical and chemical studies were made: elemental analysis (CHNO), calorific power, Thermogravimetry (TG) at a heating rate of 10°C min-1 under synthetic air atmosphere, and spectroscopic. The thermogravimetric study found a thermal stability at 300oC. In the spectroscopy in the infrared (IR) regionit was observed bands related to the presence of water, organic matter and silicon oxides in the SS samples analyzed.
Processing and Properties of Niobia-Doped Alumina Sintered at 1400oC
Authors: Trindade Willian , Prado da Silva Marcelo Henrique , Gomes Alaelson Vieira , de Campos José Brant , Louro Luis Henrique Leme
Published: June 2014

Niobia is used as a sintering additive in alumina processing because it lowers the sintering temperature. This work investigated the influence of sintering dwell time at 1400oC on the properties of 4 wt% niobia doped alumina. The sintered ceramics were characterized by scanning electron microscopy (SEM), and X rays diffraction (XRD) with Rietveld refinement. Measurements of density, average grain size, hardness, and elastic constants were also performed. The results showed that the porosity depend on the time sintering and this influence on the elastic properties. Longer sintering times improved densification and with this the Young's Modulus.
Effect of Milling Medium on Alumina Additivated with Niobia
Authors: Trindade Willian , Prado da Silva Marcelo Henrique , Gomes Alaelson Vieira , Chagas Carlos Frederico Matos , Louro Luis Henrique Leme
Published: June 2014

Niobia has been successfully used as sintering additive to alumina in order to lower its sintering temperature. This effect can also be obtained by reducing the ceramic particle size. This work investigated the effect of the particle size on the ceramic final density of alumina with 4 wt% niobia. For that two milling media were used. The as-received powders were submitted to ball and planetary milling and then sintered at 1450°C. The planetary milling medium was more efficient in reducing particle size when compared to ball milling. However, planetary milling caused significant contamination in the niobia powder, from the alumina balls used as milling agents. It forced composition balance in order to keep the original proposed formulation. The planetary milled sintered samples showed better densification and lower grain size in comparison with ball milled ones. It could be concluded that the milling medium choice directly affected both microstructure and properties of the sintered alumina with 4wt% of niobia. .
Synthesis of Strontium Titanate Nanoparticles by Ultrasonic Irradiation
Authors: Chaves André Silva , de Andrade Raponi Olívia , Gelfuso Maria Virginia , Thomazini Daniel
Published: June 2014

The SrTiO3is a ceramic with thermoelectric properties, i.e., it can generate electrical voltage between its terminals when subjected to a temperature gradient, and this behavior is known as Seebeck effect. One parameter for quantifying the efficiency of converting thermal energy into electric energy is through the value of the Figure of Merit (ZT). STO nanostructured powders were synthesized by ultrasonic irradiation (USS), and the effects of USS in STO synthesis were evaluate, and it was compared with the conventional route of solid-state reaction (SSR). USS powders were produced by solubilization of Ti (C4H9O)4and SrCO3in acid solution and following the posterior precipitation by adding NH4OH solution. After drying process, the precipitated was added to a KOH solution and was subjected to ultrasonic irradiation to promote the STO formation. DRX analysis revealed that from USS method it was possible to obtain exclusive STO phase. SEM characterization showed that the USS powder presented particle size about 100nm, which was much lower than that obtained by SSR, about 250nm.
The Influence of Microstructures of Ceramics on the Monitoring of Environmental Humidity
Authors: Oliveira Rodrigo de Matos , Nono Maria do Carmo de Andrade , Reis Fernanda Cristina
Published: June 2014

The sensing elements for humidity has been vastly researched to be applied in several areas, since automotive and food industries up to automation in the agricultural production and in the environmental monitoring. In this work, ceramic material are focused, owing to their unique structure, consisting of grains, grain boundaries, surfaces and pores, the control of which allow to obtain suitable microstructure to be used as humidity sensors. In this work, the influence of the relative humidity on the electrical conductivity of the ceramic sensing elements of ZrO2and of TiO2, under specific climatic conditions, is investigated. In this sense, the ceramics used as humidity sensing elements were manufactured through conventional ceramic processing. The sintered ceramics were characterized through X-ray diffractometry techniques, scanning electron microscopy, apparent density by the Archimedes principle and linear retraction. The results showed the development of a solid solution of ZrO2-TiO2. The microstructures presented a homogeneous distribution of pores. The ceramic tablets, sintered at 1100 °C, evidenced a linear behaviour in the curves capacitance versus environment humidity.
Influence of Oxidizing Atmosphere on Crystalline Phase Formation and Microstructural Properties of Mixed Cerium-Zinc Oxides Obtained by Polymeric Precursor Method
Authors: Sales L.L.M. , Candeia R.A. , Cunha Fernando A.P. , Silva Jesana Moura , Chaves Alexsandra Cristina , Vieira C.M.S.
Published: June 2014

This paper presents the synthesis, characterization and influence of oxidizing atmosphere in the calcinations and sintering processes on microstructural properties of mixed oxides of Cerium and Zinc, obtained by the polymeric precursor method, aiming at a subsequent catalytic application. The material was submitted to calcinations and sintering at 900 and 1050 °C. The samples were characterized by XRD analysis techniques, surface area by BET method and refined by the Rietveld method. The results of X-ray diffraction showed that interest phase was formed, indicating that the method for obtaining the phase is effective. The results of surface area for the system calcined in air were 85 m2/g and 65 m2/g for the system subjected to oxidizing atmosphere both at 900°C, in the same temperature. It was observed that the temperature increase leads to an increase in crystallite size. This fact is in line with other studies in the literature.
Low Temperature Phase Transformation Study in the Al2O3-Y2O3-Nb2O5 System
Authors: de Sousa Lima Eduardo , Santos A.P.O. , Cabral R.F. , Fortini J.I.N. , de Campos Jose B.
Published: June 2014

The mechanical properties and creep resistance of the Al2O3 have been improved with the use of other oxide ceramics, among these the Y3Al5O12 (YAG - "yttrium aluminum garnet"), to obtain the Al2O3-YAG composite. The aim of this work is to study the effect of addition of Nb2O5 at low sintering temperatures of the composite, starting from the eutectic composition Al2O3-Y2O3. In this work, the compositions were produced by powder mixtures of Al2O3-Y2O3 and Al2O3-Y2O3-Nb2O5 using high energy ball milling. The green bodies were pressed at 70 MPa and sintered at 1000, 1100, 1200 and 1300°C for 2 h. The materials were characterized by shrinkage and X-Ray Diffraction (XRD) using the Rietveld method. The presence of Nb2O5 does not show any improve neither for the YAG phase formation nor for the shrinkage of the sintered samples in the temperature range studied.
Oral field cancerization: an update on current concepts
Authors: Mohan Meenakshi , Jagannathan Nithya
Published: June 2014

There always exists a field with genetically altered cells with a high risk of developing premalignant and malignant lesions. It may often happen that an individual stem cell is genetically altered and can cause the formation of a clone or a patch which is likely to turn into a tumor. This explains the higher recurrence rates following tumor resections. It is essential to identify and to treat this field in order to have greater chances to prevent cancer and achieve a better outcome. This article reports concepts, theories and markers for the assessment of field cancerization.
Optimal use of corticosteroids in nephrology
Authors: Sprangers Ben
Published: June 2014

The usage of corticosteroids is widespread in nephrology both in the treatment of patients with native kidney diseases and of patients who have received a kidney transplant. In glomerular diseases, steroids are part of most immunosuppressive regimens applied nowadays, and only few steroid-free immunosuppressive regimens have been reported on. It is my hope that - with the introduction of more targeted therapies - corticosteroid dosage can be reduced or eliminated completely in the future. Although corticosteroids have been the mainstay in the immunosuppressive treatment of patients who received a kidney transplant, there has been a long-standing interest in steroid avoidance and withdrawal (SAW). However, there is an ongoing debate whether SAW can be considered to be the standard of care in kidney transplantation at this moment.
Corticosteroids in cardiac anesthesia
Authors: Verborgh Christian
Published: June 2014

To suppress the inflammatory responses induced by cardiopulmonary bypass and its associated procedures, corticosteroids have been administered routinely by the majority of anesthesiologists involved in cardiac surgery, although some controversy remained. This short review discusses the role of corticosteroids in cardiac anesthesia.
Long-term survivors in advanced non-small cell lung cancer treated sequentially with cytostatic drugs and erlotinib: A retrospective study
Authors: Grigorescu Alexandru Calin
Published: June 2014

Objectives: This retrospective study analyzed long-term survivor patients with advanced nonsmall cell lung cancer (NSCLC) stage IIIB and IV with the aim to find the common characteristics of this group of patients. Materials and Methods: Clinical records of 76 long-term survivor patients with advanced NSCLC who took over three series of chemotherapy and had Erlotinib in one therapeutic lines. The main criterion for selection for this study was survival over 2 years. We sought to establish some features of long-term survivors, survival according to the number of lines of chemotherapy, survival by administration of Erlotinib. The Student t-test was used for calculation of P value when the data allowed this calculation and Kaplan Mayer curve was used for survival calculation. Discussions and conclusions: Relatively small number of patients cannot afford to obtain results with a high confidence interval and very heterogeneous patient characteristics were not in the favor of the creation a prototype of long-term survivors. We have found that the trend of longer survival of our patients with advanced NSCLC may be due to using multiple lines of chemotherapy and Erlotinib in the treatment strategy for these patients. Some of our conclusions are similar to other retrospective study.
HadISDH land surface multi-variable humidity and temperature record for climate monitoring
Authors: Willett K. M. , Dunn R. J. H. , Thorne P. W. , Bell S. , de Podesta M. , Parker D. E. , Jones P. D. , Williams C. N.
Published: June 2014

Abstract. HadISDH.2.0.0 is the first gridded, multi-variable humidity and temperature climate-data product that is homogenised and annually updated. It provides physically consistent estimates for specific humidity, vapour pressure, relative humidity, dew point temperature, wet bulb temperature, dew point depression and temperature. It is a monthly-mean gridded (5° by 5°) product with uncertainty estimates that account for spatio-temporal sampling, climatology calculation, homogenisation and irreducible random measurement effects. It provides a unique tool for the monitoring of a variety of humidity-related variables which have different impacts and implications for society. HadISDH.2.0.0 is shown to be in good agreement both with other estimates where they are available, and with theoretical understanding. The dataset is available from 1973 to the present. The theme common to all variables is of a warming world with more water vapour present in the atmosphere. The largest increases in water vapour are found over the tropics and Mediterranean. Over the tropics and high northern latitudes the surface air over land is becoming more saturated. However, despite increasing water vapour over the mid-latitudes and Mediterranean, the surface air over land is becoming less saturated. These observed features may be due to atmospheric circulation changes, land–sea warming disparities and reduced water availability or changed land surface properties.
Upper ocean response to the passage of two sequential typhoons
Authors: Baranowski D. B. , Flatau P. J. , Chen S. , Black P. G.
Published: June 2014

Abstract. The atmospheric wind stress forcing and the oceanic response are examined for the period between 15 September 2008 and 6 October 2008, during which two typhoons – Hagupit and Jangmi – passed through the same region of the western Pacific at Saffir–Simpson intensity categories one and three, respectively. A three-dimensional oceanic mixed layer model is compared against the remote sensing observations as well as high-repetition Argo float data. Numerical model simulations suggested that magnitude of the cooling caused by the second typhoon, Jangmi, would have been significantly larger if the ocean had not already been influenced by the first typhoon, Hagupit. It is estimated that the temperature anomaly behind Jangmi would have been about 0.4 °C larger in both cold wake and left side of the track. The numerical simulations suggest that the magnitude and position of Jangmi's cold wake depends on the precursor state of the ocean as well as lag between typhoons. Based on sensitivity experiments we show that temperature anomaly difference between "single typhoon" and "two typhoons" as well as magnitude of the cooling strongly depends on the distance between them. The amount of kinetic energy and coupling with inertial oscillations are important factors for determining magnitude of the temperature anomaly behind moving typhoons. This paper indicates that studies of ocean–atmosphere tropical cyclone interaction will benefit from denser, high-repetition Argo float measurements.
Massive pulmonary embolism in a young boy with T-cell leukaemia
Authors: Martin C. , Alt F. , Wingerter A. , Staatz G. , Schinzel H. , Faber J. , Beck O.
Published: June 2014

Acute pulmonary embolism (PE) is a serious complication in association with malignant diseases. We describe the successful treatment of PE applying a systemic thrombolytic therapy in a 4-year-old boy with acute lymphoblastic leukaemia.

The thrombolytic therapy with recombinant tissue plasminogen activator (rtPA) 0.1 mg/ kg bodyweight per hour for six hours was continued for six days without important side effects. In particular no bleeding complications were observed. Computed tomography with contrast revealed a remarkable regression of the central PE. Without further delays the chemotherapy was resumed.
La incentivación del empleo de las personas con discapacidad en el medio ordinario de trabajo
Authors: Esteban Legarreta Ricardo , Gutiérrez Colominas David
Published: June 2014

El artículo constituye un examen crítico de los principales incentivos a la contratación de personas con discapacidad en el mercado ordinario de trabajo, es decir, las bonificaciones en materia de Seguridad Social y las subvenciones por contratación, a la luz del nuevo Texto Refundido de Ley General de derechos de las personas con discapacidad y de su inclusión social (Real Decreto Legislativo 1/2013) y de la Estrategia de Acción para el Empleo de las Personas con Discapacidad 2008-2012. Son objeto de análisis la normativa y la jurisprudencia dictada al efecto. En el artículo se analiza el alcance cuantitativo de las bonificaciones, los contratos beneficiados y el régimen jurídico de las exclusiones legales que pueden impedir su disfrute. En materia de subvenciones económicas se estudian la cuantía de la subvención por contratación, el concepto de persona con discapacidad beneficiaria o la compatibilidad entre las subvenciones estatales y autonómicas. En fin, también se aborda la subvención por adaptación de puesto de trabajo.
Aproximación al análisis coste-beneficio entre empleo con apoyo y centros especiales de empleo mediante simulación comparativa con 24 trabajadores
Authors: Jordán de Urríes Vega Francisco de Borja , de León Rodríguez Daniel , Hidalgo Gómez Francisco , Martínez Cardeña Salvador , Santamaría Domínguez Mónica
Published: June 2014

El presente trabajo plantea una aproximación al análisis coste-beneficio comparando el empleo con apoyo (ECA) con el centro especial de empleo (CEE), desde la perspectiva de la persona, la empresa y la sociedad. Para ello, se realiza una simulación con una muestra de 24 trabajadores en empleo ordinario mediante ECA y se obtienen datos hipotéticos para los mismos trabajadores si estuviesen en un empleo de similares características en un CEE. Los resultados muestran que los trabajadores en ECA, trabajando las mismas horas, tienen mayores ganancias por hora que en CEE (9,22 € frente a 4,59 €). También, que el ECA genera menor carga social desde la empresa (22,21 %) que el CEE (85,54 %) y que la rentabilidad para la sociedad del ECA es mucho mayor (315,03 %) que la de los CEE (83,14 %). Por ello, las conclusiones del estudio apuntan a que el empleo con apoyo es más ventajoso en términos de coste-beneficio para la persona, la empresa y la sociedad que los centros especiales de empleo.
"Compartir la vida". En torno a la adopción de las redes sociales en Internet entre las personas con discapacidad y mayores
Authors: Bascones Serrano Luis Miguel
Published: June 2014

Las redes sociales en Internet, en conjunción con nuevos dispositivos como el teléfono inteligente o la tableta –evoluciones del PC que se han convertido en una extensión del individuo– recrean las formas de relacionarnos. El presente artículo, desde un enfoque sociológico de la tecnología, ofrece un acercamiento a las prácticas y, en especial, a los procesos de representación discursiva de estas redes entre las personas con discapacidad y mayores, para entender las diferentes actitudes ante ellas, las barreras percibidas, los distanciamientos y su potencial descubierto. Se constata que, además de los perfiles de diversidad funcional, la edad y el nivel formativo condicionan en gran medida las vías de adopción de estas tecnologías de la información y la comunicación (TIC) y el efecto de sus barreras y el aprovechamiento de sus ventajas.
Nuevas tecnologías para la atención a personas con discapacidad de origen neurológico
Authors: Fernández Nistal Francisco
Published: June 2014

Fernández Nistal, F. (2014): “Nuevas tecnologías para la atención a personas con discapacidad de origen neurológico”. Revista Española de Discapacidad, 2 (1): 233-236.
Eosinophilic Coronary Monoarteritis
Authors: Carreon Chrystalle Katte , Esposito Michael J.
Published: June 2014

Eosinophilic coronary monoarteritis is an unfamiliar cause of acute myocardial ischemia. Most commonly, it presents as a left-sided chest pain or sudden death in middle-aged women with no traditional risk factors for coronary artery disease. Because the abrupt onset leaves almost no time for intervention, the symptoms readily lead to death, and most cases are diagnosed at necropsy. Dissection of the coronary artery wall with resultant occlusion of the lumen, which commonly affects the left anterior descending artery, is a consistent gross finding. An inflammatory infiltrate, which is predominantly composed of eosinophils in the tunica adventitia and tunica media and is often accompanied by a hematoma in between these 2 layers, is observed histologically. The etiology remains unclear, but an increase in the activity of eosinophils because of hormonal interactions during pregnancy has been suggested. Interplay of hormones is thought to culminate in the release of histolytic agents by the eosinophils, which initiate the dissection process. Currently, there is no specific treatment for eosinophilic coronary monoarteritis, but cyclophosphamide and prednisone have shown positive results in the treatment of spontaneous coronary artery dissection with unspecified periadventitial inflammation. Percutaneous coronary procedures have also resulted in favorable outcomes in a subset of patients. Because of the high, sudden death rate in eosinophilic coronary monoarteritis, deciphering the underlying pathophysiology of this almost invariably fatal disease remains both a challenge and a key to developing screening methods that will allow timely detection and thus treatment.
Laboratory Compliance With the American Society of Clinical Oncology/College of American Pathologists Human Epidermal Growth Factor Receptor 2 Testing Guidelines: A 3-Year Comparison of Validation Procedures
Authors: Dyhdalo Kathryn S. , Fitzgibbons Patrick L. , Goldsmith Jeffery D. , Souers Rhona J. , Nakhleh Raouf E.
Published: June 2014

Context.—The American Society of Clinical Oncology/College of American Pathologists (ASCO/CAP) published guidelines in 2007 regarding testing accuracy, interpretation, and reporting of results for HER2 studies. A 2008 survey identified areas needing improved compliance.

Objective.—To reassess laboratory response to those guidelines following a full accreditation cycle for an updated snapshot of laboratory practices regarding ASCO/CAP guidelines.

Design.—In 2011, a survey was distributed with the HER2 immunohistochemistry (IHC) proficiency testing program identical to the 2008 survey.

Results.—Of the 1150 surveys sent, 977 (85.0%) were returned, comparable to the original survey response in 2008 (757 of 907; 83.5%). New participants submitted 124 of 977 (12.7%) surveys. The median laboratory accession rate was 14 788 cases with 211 HER2 tests performed annually. Testing was validated with fluorescence in situ hybridization in 49.1% (443 of 902) of the laboratories; 26.3% (224 of 853) of the laboratories used another IHC assay. The median number of cases to validate fluorescence in situ hybridization (n = 40) and IHC (n = 27) was similar to those in 2008. Ninety-five percent concordance with fluorescence in situ hybridization was achieved by 76.5% (254 of 332) of laboratories for IHC− findings and 70.4% (233 of 331) for IHC+ cases. Ninety-five percent concordance with another IHC assay was achieved by 71.1% (118 of 168) of the laboratories for negative findings and 69.6% (112 of 161) of the laboratories for positive cases. The proportion of laboratories interpreting HER2 IHC using ASCO/CAP guidelines (86.6% [798 of 921] in 2011; 83.8% [605 of 722] in 2008) remains similar.

Conclusions.—Although fixation time improvements have been made, assay validation deficiencies still exist. The results of this survey were shared within the CAP, including the Laboratory Accreditation Program and the ASCO/CAP panel revising the HER2 guidelines published in October 2013. The Laboratory Accreditation Program checklist was changed to strengthen HER2 validation practices.
Promoting Racial and Ethnic Diversity among Canadian Academic Librarians
Authors: Kandiuk Mary
Published: June 2014

This study examines racial and ethnic diversity among Canadian academic librarians and discusses the findings of a nationwide survey. The survey posed questions related to equity plans and programs as well as recruitment practices for academic librarians from equity-seeking groups with a focus on Aboriginal and visible/racial minority librarians. It explored the needs and experiences of Aboriginal and visible/racial minority librarians employed in Canadian academic libraries by examining questions of organizational climate, mentoring, institutional support, advancement opportunities, and the roles of library associations. The findings reveal a need for more diversity awareness and training and leadership with respect to diversity on the part of academic libraries and the profession at large in Canada.
“YouTube Has Changed Everything”? Music Faculty, Librarians, and Their Use and Perceptions of YouTube
Authors: Dougan Kirstin
Published: June 2014

YouTube’s accessibility, ease of use, and depth of content are strong lures for music students. But do music teaching faculty and librarians encourage this and do they use it in their own research, teaching, and work? This study surveyed over 9,000 music faculty and over 300 music librarians in the United States. It discovered that faculty rank is at times a factor in faculty use of YouTube for teaching and research—but not always in expected ways. It also found that faculty and librarians do not entirely share perspectives concerning the quality of YouTube’s content, metadata, or copyright concerns.
An Analytical Solution to Heat Equation
Authors: Ion Riza  , Marius Constantin Popescu
Published: June 2014

The present paper explores theoretical aspects of solving the heat equation in the monodimensional case. The proposed study method is the variables separation method, finding thus an original solution, which is compared with the numerical solution obtained by finite difference method.
Real‑life cost and cost‑effectiveness for tiotropium 18 μg od monotherapy in moderate and severe COPD patients: a 48‑month survey
Authors: Povero Massimiliano , Pradelli Lorenzo , Turco Paola , Dal Negro Roberto Walter
Published: June 2014

BACKGROUND: Tiotropium monotherapy enables a significant minimization of morbidity in COPD. OBJECTIVE: to evaluate and compare cost and cost‑effectiveness of tiotropium monotherapy administrated for 24 months (18 μg od) in mild‑to‑moderate and severe chronic obstructive pulmonary disease (COPD). METHODS: Clinical outcomes (days in hospital; visits in general ward; cycles of systemic steroids; cycles of antibiotics and maintenance therapy drugs) were evaluated in two groups of patients corresponding to predicted FEV1 baseline values ≤ 50% (A) and > 50% (B) from the Italian NHS perspective. In order to perform cost‑effectiveness analysis, FEV1 value, available for each patient, was converted in SGRQ score using a published multivariate linear model. Utilities were then obtained through the Ståhl equation. RESULTS: The comparison between 24 months of standard therapy and subsequent 24‑month period of tiotropium monotherapy showed that hospitalization cost, which represents the driving treatment cost, drops from 77% to 69% (A) and from 67% to 33% (B) of the total cost. Differently, maintenance therapy cost increased but the amount was more than offset by the savings accruing from the shortening of hospitalization. Furthermore, cost‑effectiveness results revealed a mean savings of about 216 € (A) and 961 € (B) other than a mean gain of 0.07 QALY (A) and 0.02 QALY (B). Dominance of tiotropium (calculated only within patients completing treatment course) revealed that in almost 29% (A) and 36% (B) of subjects tiotropium strategy is dominant while only in 2% (A) and 7% (B) of cases is associated to costs increment and worsening on quality of life. The dominance was systematic in severe COPD. Statistical analyses confirm such trend. CONCLUSIONS: Results of the present study suggest that tiotropium used as unique treatment in COPD systematically consents significant costs savings together with positive effects on evaluated quality. These effects prove proportional to COPD severity.
Experiences of including costs of added life years in health economic evaluations in Sweden
Authors: Pirhonen Laura , Davidson Thomas
Published: June 2014

It is of importance to include the appropriate costs and outcomes when evaluating a health intervention. Sweden is the only country where the national guidelines of decisions on reimbursement explicitly state that costs of added life years should be accounted for when presenting health economic evaluations. The aim of this article is to, from a theoretical and empirical point of view, critically analyze the Swedish recommendations used by the Dental and Pharmaceutical Benefits Agency (TLV), when it comes to the use of costs of added life years in economic evaluations of health care. The aim is furthermore to analyze the numbers used in Sweden and discuss their impact on the incremental cost‑effectiveness ratios of assessed technologies. If following a societal perspective, based on welfare economics, there is strong support for the inclusion of costs of added life years in health economic evaluations. These costs have a large impact on the results. However this fact may be in conflict with ethical concerns of allocation of health care resources, such as favoring the younger part of the population over the older. It is important that the estimates of production and consumption reflect the true societal values, which is not the case with the values used in Sweden.
Constitution et archéologie d’un genre
Authors: Birolli Viviana
Published: June 2014

L’article se propose d’esquisser l’histoire critique du manifeste et d’introduire quelques-unes des questions et des interrogations centrales du présent dossier, à partir notamment de l’examen du cas historique des manifestes futuristes et des dynamiques groupales sous-jacentes à la continuité de ce mouvement dans le temps. Véritable « idéaltype » des manifestes de l’avant-garde historique, les textes manifestaires futuristes offriront l’occasion de s’interroger, en filigrane, sur les évolutions les plus contemporaines et singulières du manifeste.
Le manifeste en danse
Authors: Sintès Guillaume
Published: June 2014

Force est de constater que la pratique du manifeste en danse ne s’inscrit pas dans une tradition discursive importante, que ce soit en termes de production ou d’analyse critique. À vrai dire, les exemples qui ont marqué, durablement (ou pas), le champ chorégraphique français se comptent sur les doigts d’une main.

Il conviendra d’analyser l’évolution d’une pratique qui, si elle reprend les codes identitaires du genre, fonctionne à rebours des autres disciplines artistiques : délaissant une démarche singulière, menée au sein d’un groupe, au profit d’un mouvement collectif prônant la revendication d’une politique culturelle chorégraphique large, et oscillant entre acte de légitimation d’un art (et non d’une esthétique) et volonté d’institutionnalisation et de structuration du champ.
Traduction et commentaire du manifeste « Neskolko misley po povodu takogo strannogo yavlenija, kak neoakademism » de l’artiste russe Timur Novikov
Authors: Nemenko Ekaterina
Published: June 2014

Cet article propose une traduction du manifeste du néoacadémisme, un mouvement influent de l’art russe contemporain. Celle-ci est accompagnée d’un commentaire, permettant de situer ce manifeste dans le contexte historique spécifique de la Russie postsoviétique, puis de constater que la stratégie discursive adoptée par l’artiste dans cet écrit manifestaire reflète un changement significatif de la structure du champ artistique, ayant évolué par rapport à celle des avant-gardes de la première moitié du XXe siècle. Le manifeste ne consiste plus, ici, en un programme universaliste, faisant la promotion d’innovations esthétiques ou d’idéologies artistiques, mais en une déclaration des frontières territoriales d’un groupe d’artistes, qui se rassemble autour du concept de « beau classique », incarné par le patrimoine historique et culturel de Saint-Pétersbourg. Novikov ne se réfère plus aux autres programmes artistiques, mais surtout à l’État, ce dernier étant considéré comme un soutien indispensable pour l’institutionnalisation du mouvement artistique.
Ressenya a Frederic Aparisi i Daniel Muñoz (eds.), Els registres notarials de Miquel Llagària. Sueca, 1541-1552, València, PUV, 2012; & Ricard Jordi Bañó i Armiñana (ed.), Un notal alcoià dels anys 1296-1303, Barcelona, Fundació Noguera, 2013
Authors: Baydal Sala Vicent
Published: June 2014

Ressenya a Frederic Aparisi Romero i Daniel Muñoz Navarro (eds.), Els registres notarials de Miquel Llagària. Sueca, 1541-1552, València, Publicacions de la Universitat de València (Fonts històriques valencianes, 53), 2012, 600 pp. ISBN: 978-84-370-8882-2; & Ricard Jordi Bañó i Armiñana (ed.), Un notal alcoià dels anys 1296-1303, Barcelona, Fundació Noguera, (Acta notariorum Cataloniae, 25), 2013, 568 pp. ISBN: 978-84-997-5415-4.