bluuebunny/crossref_metadata_2025_split huggingface dataset:
APRESENTAÇÃO 24ª EDIÇÃO DA REVISTA TECNOLÓGICA
Authors: Silva Camila da 
Published: February 2016

A 24ª Edição da Revista Tecnológica apresenta artigos das áreas de Construção Civil, Ambiental, Ciências da Computação, Química, Física e Tecnologia de Informação.
Para esta Edição verificou-se o aumento do número e qualidade dos artigos submetidos, bem como a criteriosa revisão dos manuscritos, a qual é realizada por docentes e profissionais com experiência na área, indicados por membros do Conselho Editorial.
A revista, no momento, apresenta classificação Qualis da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) em diferentes áreas do conhecimento: B4 - Engenharias I, II e Interdisciplinar, B5 - Engenharias III e Arquitetura e Urbanismo, e C - Ciência dos Alimentos, Ciências Agrárias e Ciência da Computação.
Agradecemos o interesse de autores e leitores na Revista Tecnológica, bem como o trabalho dos revisores e do Conselho Editorial que torna possível a manutenção e crescimento desta revista.
High Order Energy-Preserving Method of the “Good” Boussinesq Equation
Authors: Jiang Chaolong , Sun Jianqiang , He Xunfeng , Zhou Lanlan 
Published: February 2016

AbstractThe fourth order average vector field (AVF) method is applied to solve the “Good” Boussinesq equation. The semi-discrete system of the “good” Boussinesq equation obtained by the pseudo-spectral method in spatial variable, which is a classical finite dimensional Hamiltonian system, is discretizated by the fourth order average vector field method. Thus, a new high order energy conservation scheme of the “good” Boussinesq equation is obtained. Numerical experiments confirm that the new high order scheme can preserve the discrete energy of the “good” Boussinesq equation exactly and simulate evolution of different solitary waves well.
Multidrug resistance gene 1 polymorphisms in pediatric patients with leukemia at a national referral hospital in Indonesia
Authors: Mutiara Rina , Agustinus Bernadius , Sitompul Christian Badia , Malik Amarila , Gatot Djajadiman , Suyatna Frans D. 
Published: February 2016

Abstract

Background
Acute lymphoblastic leukemia (ALL) is the most prevalent cancer in the pediatric population. From 25% to 30% of patients with ALL will have a relapse that leads to death when they are teenagers. At Cipto Mangunkusumo Hospital, 40% of 126 pediatric patients with ALL relapsed from 2005 to 2011. A multiple variant of multidrug resistance gene 1 (MDR1) is C3435T, which can be used to understand the genetic basis of susceptibility to relapse.

Objectives
To identify the profile of MDR1 polymorphism in pediatric Indonesian patients with ALL.

Methods
We collected data from 44 patients with ALL who attended Cipto Mangunkusumo Hospital between January and June 2014. We investigated a silent C3435T polymorphism in MDR1 exon 26 with polymerase chain reaction- restriction fragment length polymorphism using MboI.

Results
There were 32 male and 12 female patient participants in this study. Eighteen patients were 1–3 years old and 26 were over 3 years. The mean age at 1–3 years was 2.4 ± 0.86, and over 3 years it was 6.3 ± 2.67 years. There were 27 patients with ALL in the standard risk group and 17 in the high risk group. We determined that the 25 samples from patients with ALL in the standard risk group were not digestible (allele T) and the 6 samples from patients with ALL in the high risk group were digestible (allele C).

Conclusions
The prevalence of the T allele was higher than that of the C allele in pediatric Indonesian patients with ALL.
Socioeconomic and lifestyle determinants of blood glucose screening in Malaysia
Authors: Cheah Yong Kang , Lim Hock Kuang 
Published: February 2016

Abstract

Background
The increase in prevalence of diabetes is a serious public health issue. It is well-documented that use of blood glucose screening can help to reduce the risk of developing diabetes.

Objectives
To examine the socioeconomic and lifestyle factors associated with use of blood glucose screening among Malaysian adults.

Methods
Nationally representative data from 2,415 survey respondents was used. The survey was a cross-sectional population-based study previously conducted by the Ministry of Health Malaysia. A logistic regression model was developed to estimate the likelihood of using blood glucose screening.

Results
Age, marital status, ethnicity, income, smoking, and body mass index were significantly associated with use of blood glucose screening. In particular, older individuals, married individuals, Malays, higher income earners, non-smokers, and being obese, overweight or of normal weight were correlated with a higher likelihood of using blood glucose screening.

Conclusions
It is important to acquire a better knowledge of the factors that can influence the decision of people to adopt preventive measures. Having better information regarding which groups of individuals use or do not use blood glucose screening can assist governments in developing appropriate intervention programs.
Competitividad entre joyerías y tiendas de bisutería fina legalmente constituidas, 2013
Authors: Rugama Díaz Arlen Sofía , Hernández Aguilar Dania , Laguna Blandón Jessica Del socorro , Castillo Herrera Beverly 
Published: February 2016

Esta investigación analiza las acciones de competitividad implementadas por las joyerías y tiendas de bisutería fina durante el 2013, para proponer estrategias que mejoren la capacidad competitiva de ambos negocios. La hipótesis tiene como variable independiente, proceso administrativo y como variable dependiente, competitividad.Esta investigación es aplicada y cuantitativa; su universo de estudio son 17 joyerías y 19 tiendas de bisutería fina, para la obtención de la muestra se utilizó el muestreo probabilístico aleatorio simple, obteniendo 15 joyerías y 17 tiendas de bisutería fina. Se aplicaron encuestas y entrevistas semi estructuradas a propietarios de los negocios a fin de obtener información para soportar los resultados obtenidos en el desarrollo de esta investigación, se reforzó con investigación documental para tener un soporte teórico-conceptual, en el cual se identificaron tres ejes teóricos: Mercado, MIPYME y Competitividad.Se evaluaron características administrativas (administración, personal y rentabilidad), mercadológicas (ubicación, clientes, venta y publicidad), ventajas y desventajas de los negocios, obteniendo como resultado que las joyerías aplican en mayor porcentaje el proceso administrativo que las tiendas de bisutería fina y por lo tanto son más competitivas.A ambos negocios se brindan recomendaciones para mejorar su capacidad competitiva en el mercado.
Influencia económica de las fábricas de tabaco en el surgimiento de negocio
Authors: Gutiérrez Cruz Bertilda , Mejía Dávila Ludys Amparo , Lanuza Pastora Martha Irela , Castillo Herrera Beverly 
Published: February 2016

Este estudio presenta la realidad del comercio formal e informal de la zona media del distrito III de la ciudad de Estelí y la manera que influyen las fábricas de tabaco en el surgimiento de estos. La investigación es de tipo aplicada y cuantitativa. El tipo de muestreo que se aplicó fue probabilístico, y se trabajó con la base de datos del registro de negocios formales de la Alcaldía Municipal de Estelí. Se aplicó una encuesta dirigida a los propietarios de negocios formales e informales, y se entrevistaron a algunos propietarios de negocios formales e informales y a trabajadores de las fábricas.Los negocios informales surgen y se consolidan como resultado de la carencia de oportunidades laborales, los comerciantes no miran su negocio como una empresa rentable, al contrario lo consideran como una forma de sobrevivencia. En la mayoría de los negocios formales e informales no llevan un registro de las transacciones comerciales, carecen de financiamiento y toman decisiones basándose en la intuición y experiencia de sus propietarios. A partir de estos resultados, se identificaron las principales fortalezas, oportunidades, debilidades y amenazas de éstos negocios, lo que permitió sugerir una estrategia que conduzca a una mayor rentabilidad.
Evaluación de la gestión de cobro de la empresa ECONORTE, en el departamento de Estelí
Authors: Benavides Velásquez María José 
Published: February 2016

En esta investigación se determinan las malas prácticas utilizadas por los gestores de cobro de la empresa de cobros ECONORTE (Empresa de Cobros del Norte) que realizan su gestión de recuperación de cobreo en Estelí y sus municipios. El tipo de investigación que se realizó es descriptiva y analítica, con propuesta, se sustentó teóricamente en Beaugond, R. (1997), Carh, Pos. (2007), ttinger, R, P. (2000), Figueros, S (21 de Marzo- 2003), entre otros. Se aplicó un cuestionario de preguntas, dirigida tanto para el personal de la empresa como para los clientes que requieren del servicio que brinda la empresa. Los resultados evidencian que, según los gestores de cobro de Econorte las acciones y estrategias que siguen para la recuperación de la cuentas por cobrar de la empresa Disnorte son las correctas y se le esta dando el debido seguimiento a los clientes, además de estar en comunicación con los Distribuidores de Facturas para coordinar el cobro de las mismas.Según la encuesta realizada a los clientes lo anterior no es del todo efectivo ya que no se le está realizando la visita mensualmente por lo que al parecer la gestión no es la correcta.
Influence of electric field on electronic states of graphene nanoribbons under a FET structure
Authors: Yamanaka Ayaka , Okada Susumu 
Published: February 2016

Abstract
We study the electronic properties of graphene nanoribbons with zigzag and armchair edges under a parallel electric field generated by two planar electrodes with a potential barrier simulating an insulating layer of electrodes in a FET structure using density functional theory combined with an effective screening medium method. Our calculations show that the nearly free electron (NFE) states strongly depend on the mutual arrangements of graphene nanoribbons with respect to the electric field. In contrast, the electronic energy bands associated with the π electrons are insensitive to the relative direction of the ribbon with respect to the external electric field. We also observe that the electric field concentration around the edges leads to the orientation dependence of the NFE states on the field.
Carrier transport property of truxene discotic liquid crystals with three different ring substituents
Authors: Monobe Hirosato , Ni Hai-Liang , Hu Ping , Wang Bi-Qin , Zhao Ke-Qing , Shimizu Yo 
Published: February 2016

Abstract
In this study, the charge carrier transport property of 3,8,13-trioctyloxytruxene [Trx(OC8)3] and its analogues, to which two different ring substituents of hydroxyl [Trx(OH)3(OC8)3] and methoxy [Trx(OMe)3(OC8)3] groups are introduced, has been studied relative to mesomorphism. Three analogues exhibit a hexagonal columnar (Colh) mesophase and their thermal stability increases with the introduction of hydroxyl and methoxy groups. The drift mobility measurements of Trx(OC8)3 and Trx(OH)3(OC8)3 reveal that the drift mobility is on the order of 5 × 10−2 cm2 V−1 s−1 in the Colh phase and it increases to 10−1 cm2 V−1 s−1 at the Colh-metastable phase transition, although Trx(OMe)3(OC8)3 shows a drift mobility of 1 × 10−2 cm2 V−1 s−1 in the Colh phase with temperature dependence. These results indicate that truxene with three alkoxy chains is an interesting molecular core for mesophase semiconductors.
Micro cell isolation column for allergic diagnosis
Authors: Kobayashi Koichiro , Sakamoto Kenji , Yanase Yuhki , Hide Michihiro , Miyake Ryo 
Published: February 2016

Abstract
We suggest a new micro cell isolation column of basophils for an allergic diagnostic system for detecting human basophils activations. Surface plasmon resonance imaging (SPRI) biosensors using human basophils allow allergic diagnosis of less than 1 ml of peripheral blood. However, an isolation of basophils from a small amount of blood is not easy. In this study, we constructed a new micro cell isolation column for basophils with poly(dimethylsiloxane) (PDMS) microflow pass including magnetic particles. Furthermore, we determined whether leukocytes were captured by the micro cell isolation column from a small amount of blood. We can isolate basophils from other leukocytes by using the micro cell isolation column.
Theoretical study on application of peptide nanoring to chiral recognition of amino acid
Authors: Takeuchi Jo , Takeda Kyozaburo 
Published: February 2016

Abstract
Chiral recognition of a guest amino acid by a host peptide nanoring (PNR) is studied by ab initio calculations. The intermolecular hydrogen bonds (HBs) between the present host and the guest force the guest amino acid to land into the host PNR, and also the side chain of the host PNR to hold the guest amino acid. Thus, the host PNR captures the guest amino acid and gives a distinct energy difference in accordance with the chirality of the captured guest d/l-SerH+. The calculated energy difference of 18 kJ/mol in Gibbs free energy is comparable to that by the host crown ether, by which Moreno et al. have succeeded in experimentally recognizing the chirality of the guest d/l-SerH+ [J. R. A. Moreno, M. M. Q. Moreno, J. J. L. González, and B. M. Haya, J. Phys. Chem. B 117, 9362 (2013)]. The PNRs could be unique biomolecular materials from the perspective that the chirality of an “amino acid” is recognized by the PNR consisting of “amino acid” residues.
Maximum Power Point Tracking Techniques
Authors: Balato Marco , Costanzo Luigi , Vitelli Massimo 
Published: February 2016

An essential objective for many photovoltaic (PV) applications is represented by the so‐called maximum power point tracking (MPPT). Under uniform irradiance and ambient temperature conditions, the power versus voltage characteristic of a PV array is characterized by the presence of a unique point, termed maximum power point (MPP), where the power provided by the array itself attains its maximum value. Any other operating point leads to the extraction of a smaller PV energy. Therefore, in order to avoid the waste of PV energy, the working of the array in its MPP is mandatory. Since the position of the MPP continuously changes in time as a function of irradiance and temperature, it is necessary to continuously track it. Such an objective can be obtained by using proper MPPT control techniques.A large number of papers have appeared in the scientific literature during the last 15 years on the issue of MPPT, and as a result it may be difficult to decide the best technique for a given application. Therefore, this survey may hopefully be beneficial to students, researchers, and practitioners in PV systems. The article overviews the representative PV MPPT algorithms, organized into four main groups. The first group contains the so‐called “hill climbing” techniques, the second group contains the “curve fitting” techniques, the third group contains the “dynamical” techniques, and the fourth group includes all the techniques that do not belong to the first three groups.
Thermodynamic Properties of Polymers
Authors: Pyda Marek , Czerniecka‐Kubicka Anna 
Published: February 2016

Abstract

The thermodynamic properties of polymers are presented as an important part of physical chemistry characterization of material science. Polymers were characterized by macroscopic descriptions of energetics and some thermodynamic quantities that were interpreted at the microscopic (molecular) level through statistical thermodynamics. The thermodynamic characteristics of macromolecules, such as apparent, experimental heat capacity

C
p

, integral thermodynamic functions (enthalpy
H
, entropy
S
, Gibbs function
G
), and parameters phase transitions of amorphous and semicrystalline polymers, were presented and analyzed in reference to equilibrium thermodynamic data. The equilibrium, solid and liquid heat capacity of linear macromolecules, were linked with their molecular motions in the entire temperature range and used for advanced thermal analysis of experimental data. Glass transitions of mobile and rigid amorphous phases and melting process of crystalline phase of one‐ and multicomponent system of polymers were discussed.

The pressure–volume–temperature (PVT) diagrams of linear macromolecules were provided to present other important thermodynamic function, as well as to describe different states of polymers and the thermodynamic properties.
The instrumentation for thermal properties was covered mainly by calorimetry, thermogravimetry, and dilatometry. Calorimetry in low temperature is categorized into adiabatic calorimetry, or quantum design Physical Property Measurement System, which covers a similar range of temperature between 1.9 and 400 K in higher temperatures by differential scanning calorimetry, standard temperature‐modulated differential scanning calorimetry, quasi‐isothermal temperature‐modulated differential scanning calorimetry, and fast scanning calorimetry.
Phase Transformation
Authors: Binder Kurt , Müller Marcus 
Published: February 2016

AbstractThis article briefly summarizes some key theoretical concepts about phase transformations, discusses the extent, to which they differ from related phenomena in other materials, and mentions a few typical experiments to introduce the main techniques used to study such phase transitions. Phase transformations of polymeric materials, such as unmixing of polymer solutions or polymer blends, or the self‐assembly of copolymer materials into spatially modulated structures are very common phenomena and have important applications.This article focuses on the bulk thermodynamics, phase behavior and critical phenomena, interface and surface properties, and basic principles of structure formation (spinodal demixing and nucleation) in fluid polymer systems. Polymers in the solid state, that is, glassy or semicrystalline systems, rarely reach full thermal equilibrium and properties are history dependent. Such out‐of‐equilibrium aspects are beyond the scope of the present article, which rather emphasizes general aspects of the statistical thermodynamics of phase transitions and their applications to polymers in fluid phases.
Diet change and food loss reduction: What is their combined impact on global water use and scarcity?
Authors: Jalava Mika , Guillaume Joseph H. A. , Kummu Matti , Porkka Miina , Siebert Stefan , Varis Olli 
Published: February 2016

AbstractThere is a pressing need to improve food security and reduce environmental impacts of agricultural production globally. Two of the proposed measures are diet change from animal‐based to plant‐based foodstuffs and reduction of food losses and waste. These two measures are linked, as diet change affects production and consumption of foodstuffs and consequently loss processes through their different water footprints and loss percentages. This paper takes this link into account for the first time and provides an assessment of the combined potential contribution of diet change and food loss reduction for reducing water footprints and water scarcity. We apply scenarios in which we change diets to follow basic dietary recommendations, limit animal‐based protein intake to 25% of total protein intake, and halve food losses to study single and combined effects of diet change and loss reduction. Dietary recommendations alone would achieve 6% and 7% reductions of blue and green water consumption, respectively, while changing diets to contain less animal products would result in savings of 11% and 18%, respectively. Halving food loss would alone achieve 12% reductions for both blue and green water. Combining the measures would reduce water consumption by 23% and 28%, respectively, lowering water scarcity in areas with a population of over 600 million. At a global scale, effects of diet change and loss reduction were synergistic with loss reductions being more effective under changed diet. This demonstrates the importance of considering the link between diet change and loss reduction in assessments of food security and resource use.
The flow at the Earth's core‐mantle boundary under weak prior constraints
Authors: Baerenzung Julien , Holschneider Matthias , Lesur Vincent 
Published: February 2016

AbstractPrior information in ill‐posed inverse problem is of critical importance because it is conditioning the posterior solution and its associated variability. The problem of determining the flow evolving at the Earth's core‐mantle boundary through magnetic field models derived from satellite or observatory data is no exception to the rule. This study aims to estimate what information can be extracted on the velocity field at the core‐mantle boundary, when the frozen flux equation is inverted under very weakly informative, but realistic, prior constraints. Instead of imposing a converging spectrum to the flow, we simply assume that its poloidal and toroidal energy spectra are characterized by power laws. The parameters of the spectra, namely, their magnitudes, and slopes are unknown. The connection between the velocity field, its spectra parameters, and the magnetic field model is established through the Bayesian formulation of the problem. Working in two steps, we determined the time‐averaged spectra of the flow within the 2001–2009.5 period, as well as the flow itself and its associated uncertainties in 2005.0. According to the spectra we obtained, we can conclude that the large‐scale approximation of the velocity field is not an appropriate assumption within the time window we considered. For the flow itself, we show that although it is dominated by its equatorial symmetric component, it is very unlikely to be perfectly symmetric. We also demonstrate that its geostrophic state is questioned in different locations of the outer core.
Electron distribution functions in the diffusion region of asymmetric magnetic reconnection
Authors: Bessho N. , Chen L.‐J. , Hesse M. 
Published: February 2016

AbstractWe study electron distribution functions in a diffusion region of antiparallel asymmetric reconnection by means of particle‐in‐cell simulations and analytical theory. At the electron stagnation point, the electron distribution comprises a crescent‐shaped population and a core component. The crescent‐shaped distribution is due to electrons coming from the magnetosheath toward the stagnation point and accelerated mainly by electric field normal to the current sheet. Only a part of magnetosheath electrons can reach the stagnation point and form the crescent‐shaped distribution that has a boundary of a parabolic curve. The penetration length of magnetosheath electrons into the magnetosphere is derived. We expect that satellite observations can detect crescent‐shaped electron distributions during magnetopause reconnection.