bluuebunny/crossref_metadata_2025_split huggingface dataset:
On the Properties of an Ion Conductive System Incorporated in
Hybrid Films
Authors: González G. , Retuert P. J. , Fuentes S. 
Published: May 2019

ABSTRACTBlending the biopolymer chitosan (CHI) with poly (aminopropilsiloxane)
oligomers (pAPS), and poly (ethylene oxide) (PEO) in the presence of lithium
perchlorate lead to ion conducting products whose conductivity depends on
the composition of the mixture. A ternary phase diagram for mixtures
containing 0.2 M LiClO4 shows a zone in which the physical
properties of the products - transparent, flexible, mechanically robust
films - indicate a high degree of molecular compatibilization of the
components. Comparison of these films with binary CHI-pAPS nanocomposites as
well as the microscopic aspect, thermal behavior, and X-ray diffraction
pattern of the product with the composition PEO/CHI/pAPS/LiClO4
1:0.5:0.6:0.2 molar ratio indicates that these films may be described as a
layered nanocomposite. In this composite, lithium species coordinated by PEO
and pAPS should be inserted into chitosan layers. Electrochemical impedance
spectroscopy measurements indicate the films are pure ionic conductors with
a maximal bulk conductivity of 1.7*10-5 Scm-1 at 40 °C
and a sample-electrode interface capacitance of about 1.2*10-9
F.
Patterned Functional Arrays by Selective
De-Wetting
Authors: Fan Hongyou , Doshi Dhaval , Lu Yunfeng , Lopez Gabriel P. , Jeffrey Brinker C. 
Published: May 2019

ABSTRACTUsing a micro-Contact Printing (μ-CP) technique, substrates
are prepared with patterns of hydrophilic, hydroxyl-terminated SAMs and
hydrophobic methyl-terminated SAMs. Beginning with a homogeneous solution of
silica, surfactant, ethanol, water, and functional silane, preferential
ethanol evaporation during dip-coating, causes water enrichment and
selective de-wetting of the hydrophobic SAMs. Correspondingly, film
deposition occurs exclusively on the patterned hydrophilic SAMs. In
addition, by co-condensation of tetrafunctional silanes (Si(OR)4)
with tri-functional organosilanes
((RO)3Si(CH2)3NH2), we have
selectively derived the silica framework with functional amine
NH2 groups. A pH sensitive, micro-fluidic system was formed by
further conjugation reactions with pH sensitive dye molecules.
Structural, Thermal, and Thermomechanical Behaviors of
Phenolic-Inorganic Hybrid Composites
Authors: Amanuel Samuel , Malhotra Vivak M. 
Published: May 2019

ABSTRACTIn pursuit of our goal of forming organic-inorganic hybrid frictional
materials, we produced two types of composites, i.e., conventional and
hybrid. We formed conventional composites by dispersing fly ash,
montmorillonite clay, or pre-formed nano-sized silica particles in phenolic
matrix. Hybrid composites were fabricated from sol-gel technique using
tetramethylor-thosilicate-phenolic mixtures. We subjected our samples to
X-ray diffraction (XRD), scanning electron microscopy (SEM), differential
scanning calorimetry (DSC), in-situ transmission-Fourier transform infrared
(ISTA-FTIR), and dynamic mechanical analyzer (DMA) measurements at 40°C <
T < 310°C. Our results suggested that the curing behavior of the phenolic
polymer was affected by the concentration of the silica and hybrid
composites manifested mechanical properties, which were substantially
different from that of conventional composites.
New Structure of CTAB Templated Silica Films as revealed by
GISAXS coupled to HRTEM
Authors: Besson Sophie , Jacquiod Catherine , Gacoin Thierry , Naudon André , Ricolleau Christian , Boilot Jean-Pierre 
Published: May 2019

ABSTRACTA microstructural study on surfactant templated silica films is performed by
coupling traditional X-Ray Diffraction (XRD) and Transmission Electronic
Microscopy (TEM) to Grazing Incidence Small Angle X-Ray Scattering (GISAXS).
By this method it is shown that spin-coating of silicate solutions with
cationic surfactant cetyltrimethylammonium bromide (CTAB) as a templating
agent provides 3D hexagonal structure (space group P63/mmc) that
is no longer compatible with the often described hexagonal arrangement of
tubular micelles but rather with an hexagonal arrangement of spherical
micelles. The extent of the hexagonal ordering and the texture can be
optimized in films by varying the composition of the solution.
Hybrid Micro-Optical Sensors via Sol-Gel Soft
Lithography
Authors: Clarner Mark A. , Lochhead Michael J. 
Published: May 2019

ABSTRACTOrganically modified silica gels and dye-doped silica gels have been
patterned into micrometer-scale structures on a substrate using micro
molding in capillaries (MIMIC). This approach is from a class of elastomeric
stamping and molding techniques collectively known as soft lithography. Soft
lithography and sol-gel processing share attractive features in that they
are relatively benign processes performed at ambient conditions, which makes
both techniques compatible with a wide variety of organic molecules,
molecular assemblies, and biomolecules. The combination of sol-gel and soft
lithography, therefore, holds enormous promise as a tool for
microfabrication of materials with optical, chemical, or biological
functionality that are not readily patterned with conventional methods. This
paper describes our investigation of micro-patterned organic-inorganic
hybrid materials containing indicator dyes for microfluidic sensor
applications. Reversible colorimetric pH sensing via entrapped reagents is
demonstrated in a prototype microfluidic sensor element. Patterned
structures range from one to tens of micrometers in cross-section and are up
to centimeters in length. Fundamental chemical processing issues associated
with mold filling, cracking and sensor stability are discussed.
OPTIMIZATION OF OPERATING FRACTURING PARAMETERS FOR IMPROVING OIL PRODUCTION IN LOWER OLIGOCENE E RESERVOIR USING RESPONSE SURFACE METHOD, OFFSHORE VIETNAM: A CASE STUDY
Authors: Huu Truong Nguyen 
Published: May 2019

In the recent days, hydraulic fracturing technique has been widely used to improve oil production with different reservoir characteristics such as low or high formation permeability, low or high formation porosity, formation damage. However, previous research did not mention the optimization for fracturing parameters including the injection rate, injection time, and leak-off coefficient to stimulate the Oligocene E reservoir, which is based on optimum oil production performance at which maximum net present value has been achieved. The problems in the Oligocene reservoir are too low production rate due to high reservoir depth, high closure pressure up to 7,700 psi, low reservoir permeability, low porosity and geological structure with heterogeneous reservoir, high temperature, resulting in low conductivity. To deal with these problems, fracturing technique is the best choice to stimulate this reservoir. The study focuses on optimizing fracturing parameters by applying the CCD and RSM by which economic production performance has been maximized at 119 $ in 10 years. The optimum fracturing parameters have been found as injection rate of 47 bpm, injection time of 119 minutes and leak-off coefficient of 0.003 ft/min0.5 in 50 pounds per thousand gallons of polymer (HPG). The optimal fracture geometry has been obtained with the fracture half-length of 1,449.44 ft and fracture width of 0.567 in. The rest of experimental laboratory is to measure fracture conductivity at 3,400 mD.ft in terms of proppant fracture concentration of 1.78 lb/ft2 and high closure pressure of 7700 psi. The post fractured well shows an increase in oil productivity of 7.5 folds.
EFFECT OF HULL AND ACCOMMODATION SHAPE ON AERODYNAMIC PERFORMANCES OF A SMALL SHIP
Authors: Toan Ninh Cong , He Ngo Van 
Published: May 2019

In marine transportation, aerodynamic performance is important for the ships, especially for the small passenger fast ships. It has affected the service speed, air resistance acting on hull, power energy as well as roll, pitch, yaw and stability of the ships. Moreover, the aerodynamic performance also directly affects the passengers, captains or employments who work on the ships. For a bad aerodynamic performance hull shape, it may make an accident in marine transportation. In this paper, the authors present a study on effect of hull shape on aerodynamic performance of a small passenger fast ship by using a commercial Computational Fluid Dynamics (CFD). Several hull forms with different shapes are proposed and computed to show their aerodynamic performances. From the comparison between different CFD results of the ships, the effects of hull shape on aerodynamic performances of the ships are understood.
Scrum+: A scaled Scrum for the agile global software development project management with multiple models
Authors: Pardo Calvache César Jesús , Chilito Gomez Piedad Rocío , Viveros Meneses Daniel Esteban , Pino Correa Francisco José 
Published: May 2019

Nowadays, carrying out a project management is difficult in any situation, even more in global projects of software development, whose environment faces different aspects that make this type of projects even more difficult to manage, for example: lack of coordination, lack of face to face communication, temporary differences, cultural diversity and application of different standards, models and approaches. With the aim of supporting agile global software development (AGSD) project management when multiple models are present, we have defined Scrum+, which is a guide based on Scrum and defines a set of activities, tasks, roles and criteria to support AGSD projects in multimodel environments. We carried out the harmonization of agile approach Scrum along with project management practices defined in multiple models such as: ISO/IEC 15504, ISO 9001 and CMMI-DEV. Likewise, the evaluation of the proposal has been conducted through: (i) its application in a focus group with experts in different related areas and (ii) its assessment of the degree of agility by means 4-DAT method. Based on the analysis of the results and the comments obtained in the focus group, Scrum+ seems to be clear, adequate, and agile. The guide proposed here can serve as reference for studying further aspects related to agile software scaled projects.
Una reflexión sobre la relevancia de las actitudes hacia el cáncer
Authors: Palacios-Espinosa Ximena , Vargas-Jiménez Jenny Fernanda , Calle-Nassiff María Paula 
Published: May 2019

El cáncer representa altas tasas de morbimortalidad humana, por ello su diagnóstico ha sido objeto de respuestas psicológicas diversas como las actitudes, las cuales denotan una tendencia de favorabilidad o desfavorabilidad hacia una entidad específica. Una revisión de la literatura publicada entre 2005 y 2017 sobre las actitudes hacia el cáncer, analizadas a través del modelo tripartito, dio lugar a reflexionar sobre la importancia que estas tienen, tanto para los pacientes, como para la población general y los profesionales de la salud. De acuerdo con lo anterior, se presentan las actitudes reportadas hacia el cáncer, la forma en que interactúan los conocimientos, las creencias, las emociones y las conductas y, también, las conclusiones de una postura crítica y analítica frente a estas actitudes con sus implicaciones para los profesionales de la salud.
Determinación de intervalos biológicos de referencia para adultos en el equipo hematológico BC-5000 de la Escuela de Microbiología de la Universidad de Antioquia, Medellín 2017
Authors: Mejía-Saldarriaga Simón Santiago , Agudelo-Rendón Daniela , Bossio-Zapata Felipe , Sánchez-Cifuentes Érika , Jaramillo-Pérez Luz Marina , Acevedo-Toro Paola Andrea 
Published: May 2019

Introducción: los valores del hemograma en adultos pueden variar de acuerdo con factores como el origen étnico, la edad, el sexo y la altura sobre el nivel del mar, por lo cual es indispensable conocer intervalos biológicos asociados a nuestra población. Por esto el objetivo de nuestro estudio fue determinar intervalos biológicos de referencia (IBR) para adultos en un equipo hematológico BC-5000.Metodología: estudio descriptivo transversal con 111 donantes entre 18 y 62 años de un banco de sangre de Medellín. Se realizó un hemograma, proteína C reactiva y ferritina. Se calcularon los IBR siguiendo las recomendaciones de la Federación Internacional de Química Clínica. La comparación de los IBR según sexo se realizó con la prueba T-student. Resultados: los IBR calculados mediante la fórmula X ± (DS * 1,96) mostraron diferencias estadísticamente significativas entre hombres y mujeres para el recuento de la mayoría de los parámetros. Se obtuvieron medias estadísticas mayores en mujeres para el recuento de leucocitos y plaquetas, recuentos absolutos y relativos de algunas células blancas, volumen plaquetario medio (VPM) y plaquetocrito (PCT).Discusión: la presencia de andrógenos en el sexo masculino, inductores del sistema eritropoyético, así como los estrógenos y el período menstrual, supresores del mismo, pueden explicar los valores menores en el recuento eritrocitario, en los rangos de hemoglobina, hematocrito y glóbulos rojos en las mujeres. Las altas cargas de estrógenos e interleucinas 6 y 10 en las mujeres amplían la vida media de células como linfocitos, explicando la diferencia en el recuento leucocitario a expensas de linfocitos encontrados en el presente estudio.
Reflexiones sobre la metodología terminológica en contextos de traducción: ¿qué se pierde en el trabajo con herramientas informáticas?
Authors: Pissolato Luciana , Tebé Carles 
Published: May 2019

Los supuestos metodológicos del trabajo en terminología desde una aproximación lingüística y textualista están bien establecidos desde hace años. No puede hablarse de una metodología terminológica única, puesto que lo que denominaremos escenarios terminológicos pueden suponer recorridos y etapas metodológicas muy diferentes –por ejemplo, una recopilación de neologismos de prensa, la compilación de un glosario para la traducción, o un trabajo de normalización de términos.La diversidad de escenarios terminológicos se corresponde con una gran variedad de herramientas disponibles para el terminólogo: gestores de bases de datos, alineadores, concordanciadores, herramientas de traducción asistida y automática, detectores de terminología, extractores de definiciones, etc. Cada escenario de trabajo exige su propio conjunto de herramientas.En este artículo, planteamos una serie de reflexiones metodológicas en torno al trabajo en terminología: si bien las herramientas nos permiten tratar grandes volúmenes de datos, ser más consistentes, y validar hipótesis de una forma más objetivable, sobre todo cuantitativamente, ¿qué se pierde al dejar que sea la herramienta, y no el investigador, quien extraiga evidencias y presente resultados? A partir de ejemplos concretos, responderemos a las siguientes preguntas: ¿se pierden datos relevantes? ¿En qué etapas, mayormente? ¿Qué tipo de datos son y qué impacto tienen sobre la investigación? Además de datos, ¿qué otros aspectos de la metodología se pueden ver afectados? Puesto que la investigación se desarrolló en un escenario de traducción, en las conclusiones proyectaremos las consecuencias de estas reflexiones sobre la enseñanza-aprendizaje de la terminología en contextos de traducción.
Design of a wave energy converter system for the Colombian Pacific Ocean
Authors: Romero Menco Fredys , Rubio-Clemente Ainhoa , Chica Edwin 
Published: May 2019

This paper details the mechanical design of a wave power generation system comprising a buoy that houses a set of mechanical devices and a linear generator. The system proposed transforms the heaving movement of the buoy in a rotational movement of the arm that houses the linear generator. Firstly, the conceptual design and the operation of the system is exposed. Secondly, the conditions of the waves in the zone of interest are presented; in this case, the device was designed to work in the Colombian Pacific Ocean. Afterwards, the dynamic model of the buoy and the linear generator are deduced starting off the movement laws. To solve the resulting equation, Ansys Aqwa® numerical software is used to know the behavior of the device under the features of the swell conditions. Finally, the simulation results under real conditions are presented and compared to the response under incident regular wave. To determine the amount of electric power generated, a calculus routine in Matlab® is implemented. Throughout the numerical code, the electric power generated is calculated at each time step, and the average electric power is solved subsequently. It was found that under regular and irregular swell conditions the amount of electricity produced was 1.17 and 0.5 kW, respectively. In this regard, the device proposed here is an interesting option for populations inhabiting near coastlines far from existing electricity grids.
Public Property in Australia and Russia: The Concept and the Role of the Constitution
Authors: Nizov Vladimir 
Published: May 2019

The modern democratic state embodies the concept of the state as a service. For this reason, the administration of public property is one of the major issues related to the efficiency of public authority. Common law countries and post-Soviet countries have completely different legal explanations and bases for public property. This article takes a comparative approach, showing similarities and differences in the public property regimes in these two systems.This article investigates why the two systems have different approaches to public property issues and how the differing experiences result in differing implementation. Australia and Russia have been chosen as examples of a common law system and the post-Soviet system, respectively. In addition to property regimes, this paper also discusses federalism issues.An analysis of these countries’ historical development permits a significant enhancement of the philosophical and legal understanding of property, especially public property. Protection of private property in Russia was very strong by 19th century standards. However, the Russian Empire fell behind in questions of public property compared to its protection of private property, and also compared to other systems outside of Russia. Some aspects of dealing with the most critical natural resources expand public property regulation issues into the constitutional sphere. Public property issues need constitutional justification in both Australia and Russia. However, Russia has constitutional provisions that provide the categories of property rights existing in its domestic law, while a great deal of effort was required in Australia to create the constitutional basis for water resources administration.
Validity of the Demirjian and Fishman Methods for Predicting Chronological Age Amongst Yemeni Children
Authors: Alqadi Maktoom A. , Abuaffan Amal H. 
Published: May 2019

Objectives: There has been an increasing need for reliable chronological age (CA) estimation in several aspects, including orthodontic treatment needs and legal, civil and forensic purposes. This study aimed to assess the validity of the Demirjian and Fishman methods in predicting the CA of Yemeni children. Methods: This descriptive cross-sectional study was conducted at seven schools in Sana’a, Yemen, between December 2016 and December 2017. One orthopantomograph and one left hand-wrist X-ray were obtained for each child to calculate the dental age (DA) and skeletal age (SA) which were correlated and compared with the CA. Results: A total of 358 Yemeni children aged 8–16 years were included in this study. The mean CA, DA and SA were 12.00 ± 2.25, 11.34 ± 2.42 and 12.39 ± 1.65 years, respectively. The Demirjian method significantly underestimated the CA by 0.58 ± 1.25 years in the total sample and 0.73 ± 1.30 and 0.40 ± 1.17 years in males and females, respectively (P <0.001). The Fishman method significantly underestimated the CA by 0.23 ± 1.19 and 0.44 ± 1.26 years in the total sample and in males, respectively (P ≤0.02). The Fishman method insignificantly underestimated the females CA by 0.02 ± 1.08 years (P = 0.898). Conclusions: Yemeni CA is highly correlated to DA and SA estimated by the Demirjian and Fishman methods, respectively. The Fishman method was more accurate amongst Yemeni females. Results showed that Yemeni children are delayed in dental development and skeletal maturity.Keywords: Age Determination by Teeth; Age Determination by Skeleton; Children; Adult Children; Diagnostic Imaging; Yemen.
Massive Hyphaema Following Laser Iridotomy in a Patient on Dual Antiplatelet Therapy (Aspirin plus Ticagrelor): Case report and literature review
Authors: Galvis Virgilio , Tello Alejandro , Carreño Néstor I. , Sánchez Walter A. , Frederick Gabriel A. , Blanco Nicolás A. 
Published: May 2019

Massive hyphaema presentation after a laser iridotomy is very rare. We report a 63-year-old man with ischaemic heart disease on dual antiplatelet therapy (aspirin plus ticagrelor) who was diagnosed as a primary angle-closure suspect and was to undergo a neodymium-doped yttrium aluminium garnet laser iridotomy at Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia in 2016. While performing the iridotomy in the left eye, active bleeding occurred that finally filled approximately 75% of the anterior chamber. Intraocular pressure (IOP) increased to 62 mmHg. Mannitol and a topical dorzolamide/timolol were used to control the increase in IOP. The hyphaema slowly resolved over the following week without sequelae. This case revealed that massive hyphaema can complicate laser iridotomy in patients on dual antiplatelet therapy, although this is rare. Therefore, if patients are taking aspirin and ticagrelor, it would be advisable to stop the second medication if possible. In addition, sequential application of photocoagulation and photodisruption lasers might diminish the risk of significant bleeding.Keywords: Iridectomy; Nd-YAG Laser; Hyphema; Platelet Aggregation Inhibitors; Angle-Closure Glaucoma; Ocular Hypertension; Case Report; Columbia.
DIAGNÓSTICO DA GESTÃO DE RESÍDUOS SÓLIDOS NO VALE DO ARINOS
Authors: Vicente Glades , De Lima Ana Maria , Oliveira Vilma Eliane Machado de , Angola Lidiane Silva Souza 
Published: May 2019

O estudo teve como objetivo central analisar como ocorre a gestão de resíduos sólidos por parte da administração pública municipal na região do Vale do Arinos. O Vale do Arinos localiza-se na região noroeste do Estado de Mato Grosso. Nessa região estão disponíveis recursos hídricos, animais e vegetais da Amazônia brasileira. A metodologia adotada inicialmente foi de revisão bibliográfica não sistematizada, pesquisa de campo, observações, pesquisa documental e entrevistas. Os resultados apontam que a região do Vale do Arinos tem limitações na gestão de resíduos sólidos, assim, somente o município de Porto dos Gaúchos tem iniciativas para trabalhar a aplicabilidade da Política Nacional de Resíduos Sólidos (PNRS). Será necessária uma atuação do poder público municipal e outras instituições que possam contribuir para resolver a problemática dos resíduos na região do Vale do Arinos. O cenário aponta a urgência em investimentos para que os aterros sanitários públicos ou privados se instalem de forma a atender as demandas de resíduos sólidos a serem descartados corretamente, incluindo o trabalho dos catadores nesse processo. Aliado a isso, tem-se o desafio da formação e educação dos atores sociais para realizarem de forma adequada o descarte de seus resíduos. Talvez esse seja o maior desafio, uma sociedade consciente e que age para o bem coletivo nos aspectos sociais e ambientais.