bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tecnologias de Enlace de Datos Utilizadas en las Redes Metropolitanas de Empresas en Barranquilla, Colombia
Authors: Henríquez C Javier A 
Published: August 2017

El propósito de la investigación consistió en analizar las tecnologías de enlace de datos usadas actualmente en las redes metropolitanas en las empresas en la ciudad de Barranquilla, Colombia con el fin de determinar las características que tienen en cuenta dichas empresas para su implementación y cuál de dichas tecnología es la más usada. La población estuvo conformada por 18 empresas que usan interconexiones a través de redes metropolitanas como un elemento indispensable para el desarrollo de sus labores. Se utilizó la técnica de observación por encuesta, y como instrumento, el cuestionario dirigido a la población de estudio, el mismo estuvo conformado por 28 preguntas de múltiples alternativas de respuesta. En cuanto a la validez del instrumento se utilizó la evidencia relacionada con el contenido a través de la opinión de los expertos. Los resultados evidencian que existen múltiples alternativas de interconexión para las diferentes sedes en el área metropolitana de las empresas e igualmente que existen diversos factores que tienen en cuenta dichas empresas al momento de decidir que tecnología implementar. AbstractThe purpose of this research was to analyze the data link technologies currently used in metropolitan networks in enterprises in the city of Barranquilla, Colombia to determine the characteristics that take into account these companies to implement and which of these technology is most used. The population consisted of 18 companies using interconnections through metropolitan networks as essential to the development of their work. We used the observation by technical survey, and as an instrument, the questionnaire addressed to the study population, it consisted of 28 questions of multiple response alternatives. As to the validity of the instrument was used the evidence relating to the content through expert opinion. The results show that there are multiple alternatives to interconnect the various sites in the metropolitan area of business and also that there are several factors that consider these companies when deciding which technology to implement. Along this line of thought the factors that are affecting the connection speed and quality of service.
EVALUACIÓN DE LAS PROPIEDADES MECÁNICAS DE UNA MEZCLA DE CONCRETO HIDRÁULICO PARA PAVIMENTO RÍGIDO CON LA INCLUSIÓN DE HORMIGÓN ASFÁLTICO RECUPERADO TIPO “RAP”
Authors: Santos Montero David Alberto , Solarte Vanegas Norma Cristina 
Published: August 2017

La construcción de pavimentos rígidos y flexibles genera desarrollo social e impacto económico/ambiental en su concepción, desarrollo y operación posterior. Su construcción requiere de materiales a bajo costo, alta disponibilidad y total aprovechamiento, así como de propiedades que garanticen el cumplimiento mínimo de durabilidad y costos racionales de mantenimiento. Conviene obtener y usar materiales de considerada abundancia y que para su procesamiento requieran de una tecnología limpia y tradicional, a fin de que el impacto ambiental sea el más bajo posible. Los agregados reciclables corresponden a estos materiales, y dentro de ellos está el RAP, del inglés Reclaimed Asphalt Pavement (Pavimento Asfáltico Recuperado) [1], cuyo término es dado a los materiales extraídos o procesados que contienen una presencia contraída de betún asfáltico y que, ahondado en la fatiga estructural de un pavimento flexible, por efectos de envejecimiento, se obtiene por medio de una de las técnicas más conocidas de recuperación: El fresado. Gran parte de los países del mundo ha utilizado el RAP en la re-manufactura de mezclas asfálticas. Con ello se disminuye su retiro a sitios de disposición final y se minimiza el consumo de agregados pétreos vírgenes, lo que produce beneficios ambientales a corto plazo, así como otros que sobresalen por el aprovechamiento de su calidad de mezclado y condición estructural residual. Todo ello ha generado una nueva alternativa de estudio en la manufactura de mezclas hidráulicas para la construcción de pavimentos rígidos.
Growth and Osteogenic Differentiation of CD117+ Dental Pulp and Periodontal Ligament Cells
Authors: Sandra Ferry , Sudiono Janti , Binartha Ciptadhi Tri Oka , Chouw Angliana , Djamil Melanie Sadono 
Published: August 2017

BACKGROUND: Dental pulp stem cell (DPSC) and periodontal ligament stem cell (PDLSC) have been suggested as valuable seed cells for bone engineering, suggesting that both stem cells are potential osteogenic sources. Since DPSC and PDLSC seem like to have similar potential in bone formation, we conducted a study to compare morphology, immunophenotype and cell growth of DPSC and PDLSC isolated from the same teeth.METHODS: Human dental pulps and periodontal ligaments were obtained from freshly extracted partial impacted third molar teeth. Collected samples were digested with type I collagenase. Resulted cell suspension was washed and cultured. For biomarker identification, the cells were fixed and bound with anti-fluorescein isothiocyanate (FITC)-cluster of differentiation (CD)117 antibody. For cell growth quantification, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used. Meanwhile for osteogenic differentiation, the cells were cultured in osteogenic medium for 1-3 weeks, fixed and stained with alizarin red.RESULTS: Morphology of dental pulps cell (DPC) and periodontal ligament cell (PDLC) in passage 5 was similar. Clear CD117 green fluorescence of DPC and PDLC in passage 5 was observed. Cell growth rate of PDLC was higher than the one of DPC, 0.3858 and 0.3848 respectively. DPC formed bone nodule on the third week culture in osteogenic medium, while PDLC showed bone nodule formation on the second week culture.CONCLUSION: We suggest that DPC and PDLC are potential seed cells for osteogenic regeneration, since they had cell growth capacity and osteogenic differentiation, particularly PDLC that had faster osteogenic differentiation.KEYWORDS: dental pulp, periodontal ligament, cell, growth, osteogenic differentiation
Early Screening of Hemoglobinopathy in Indonesia Using Erythrocyte Indices
Authors: Surjawan Yenny , Tan Hwee Lian , Setiabudy Rahajuningsih Dharma , Rositawati Wiwik 
Published: August 2017

BACKGROUND: The mutation spectrums of hemoglobinopathy are different among populations that yield a different result of erythrocyte indices. Calculation of erythrocyte indices with some formula has been reported to differentiate between hemoglobinopathy and non-hemoglobinopathy, but its cut-off should be recalculated specific for each population to gain a better sensitivity and specificity. We aimed to evaluate red blood cell count (RBC), Mentzer index, red cell distribution width (RDW), RDW index (RDWI), Shine and Lal index (S&L) and Green and King index (G&K) to screen hemoglobinopathy in Indonesia.METHODS: A retrospective cross-sectional study was performed on 202 subjects. The diagnosis of hemoglobinopathy was determined based on the results of complete blood count (CBC) data, high-performance liquid chromatography (HPLC) and Hemoglobin H (HbH) inclusion body. The ferritin concentration was checked to determine the status of iron. The erythrocytes indices were analyzed and calculated to predict hemoglobinopathy. RESULTS: A total 202 subjects who met the criteria were involved in this study. Fifty percent showed pure hemoglobinopathy and 4% showed a combination of thalassemia and hemoglobinopathy. The hemoglobin concentration and RBC were significantly higher, and the mean corpuscular volume (MCV) and RDW were significantly lower in hemoglobinopathy compared to iron deficiency. The difference was not significant if the hemoglobinopathy was combined with iron deficiency. By this study's cut-off, the G&K and RDWI showed the highest accuracy, sensitivity, and specificity.CONCLUSION: The new cut-off of erythrocyte index and its calculation to screen hemoglobinopathy in Indonesia showed a higher sensitivity and specificity, especially for G&K and RDWI with cut-off 73 and 228, respectively. The presence of iron deficiency in hemoglobinopathy could decrease the sensitivity.KEYWORDS: hemoglobinopathy, RBC, Mentzer index, RDW, RDWI, S&L, G&K
Transient Neonatal Diabetes Mellitus: A Challenge and Opportunity for Specialized Nursing Care
Authors: Zammit Martha Anne , Agius Stefanie Marie , Calleja-Agius Jean 
Published: August 2017

AbstractTransient neonatal diabetes mellitus (TNDM) is a rare disorder, with a reported incidence of approximately 1 in 450,000 live births. It is characterized by insulin-requiring hyperglycemia in the neonatal period. The disease improves by early childhood, but the patient may relapse in later life. Diagnosis is made after genetic testing following presentation with hyperglycemia not conforming to Type 1 or Type 2 diabetes. Management is based on insulin and possible sulfonylurea administration. Three genetically distinct subtypes of TNDM are recognized. Type 1 TNDM is due to overexpression of genes at the 6q24 locus, whereas the 11p15 locus is involved in Type 2 and 3 TNDM. In this article the clinical presentation, management, and genetics of TNDM are discussed, particularly emphasizing the role of the neonatal nurse.
Using Dextrose (Glucose) Gel to Reverse Neonatal Hypoglycemia
Authors: Scheans Patricia , Bennett Catherine , Harris Deborah 
Published: August 2017

AbstractHospitals are challenged to implement measures to improve health outcomes, decrease costly interventions, and increase patient satisfaction. By following a nurse-driven protocol, our institution has successfully met these three challenges in our treatment of newborns diagnosed with neonatal hypoglycemia (NH).Based on results of a randomized clinical trial,1 a multidisciplinary team trialed glucose gel as a standard treatment for NH.During the first year, admission rates to the NICU for NH decreased by 73 percent. Exclusive breastfeeding rates for this population increased to 49 percent and 40 additional families remained together on the mother baby unit.This practice change is improving health outcomes, decreasing expensive interventions, and increasing satisfaction among the population of infants at risk for NH.
The Infant Born to a Woman with Gestational Diabetes
Authors: Povinelli Theresa , Lim Caitlin , Raines Deborah A. 
Published: August 2017

AbstractGestational diabetes mellitus (GDM) is defined as glucose intolerance with onset during pregnancy. During pregnancy, women with GDM develop insulin resistance, which results in altered glucose tolerance. As a result, there are frequent episodes of hyperglycemia and high levels of circulating amino acids, increasing the transfer of nutrients to the fetus. This article discusses the role of the mother–baby nursing in the care of neonates born to women with gestational diabetes.
O USO DO CINEMA NO ENSINO DE HISTÓRIA EM CONSONÂNCIA COM AS NOVAS DEMANDAS DA HISTÓRIA PÚBLICA DIGITAL
Authors: Da Silva Cleonice Elias 
Published: August 2017

Neste artigo apresentamos as possibilidades do uso do cinema no ensino de História. Para tanto, considero as reflexões de Jonathas Serrano e Francisco Venâncio Filho apresentadas em uma publicação do início da década de 1930, e as de Marcos Napolitano presentes em uma obra publicada a primeira vez nos inícios dos anos 2000. A premissa norteadora das discussões apresentadas nesse artigo é de que o novo contexto marcado pelo advento tecnológico e pela emergência da História Pública Digital viabiliza a exibição de filmes nas escolas, sendo que esses cumprem um papel relevante na história pública.

PALAVRAS-CHAVE: Cinema; História; Ensino de História; História Pública Digital.

ABSTRACT
In this article we present the possibilities of the use of cinema in the teaching of History. For that, I consider the reflections of Jonathas Serrano and Francisco Venâncio Filho presented in a publication of the early 1930s, and those of Marcos Napolitano present in a work published the first time in the early 2000s. The guiding premise of the discussions presented in this article is that the new context marked by the advent of technology and the emergence of Digital Public History makes it possible to display films in schools, and these are a relevant role in public history.

KEYWORDS: Cinema; History; History Teaching; Digital Public History.

RESUMEN
En este artículo nosotros presentamos las posibilidades del uso del cine en la enseñanza de la Historia. Para ello, considero las reflexiones de Jonathas Serrano y Francisco Venâncio Filho presentadas en una publicación de principios de la década de 1930, y las de Marcos Napolitano presentes en una obra publicada la primera vez a principios de los años 2000. La premisa orientadora de las discusiones presentadas en ese artículo es que el nuevo contexto marcado por el advenimiento tecnológico y por la emergencia de la Historia Pública Digital viabiliza la exhibición de películas en las escuelas, siendo que estos cumplen un papel relevante en la historia pública.

PALABRAS CLAVE: Cine; Historia; Enseñanza de Historia; Historia Pública Digital.
PRECISA-SE DE PROFESSORES PARA A TERRA DE NINGUÉM
Authors: Vicente Kyldes Batista , Sousa Fábio d’Abadia de 
Published: August 2017

O mundo da Internet não pode mais continuar sendo a Terra de Ninguém. É preciso que nós, professores, deixemos, de uma vez por todas, todo e qualquer temor em relação ao mundo tecnológico que nos rodeia e que ocupemos o lugar que nele está destinado a nós: o de orientadores desta transição do mundo real para o virtual. Acreditamos que o papel do professor não é falar de tecnologia, mas de humanidade.
O PODER DA PREFEITURA, RELAÇÕES ÍNTIMAS E O VOTO RETROSPECTIVO: Uma análise da dinâmica eleitoral municipal através do método qualitativo
Authors: Oliveira Adriano , Gadelha Carlos , Costa Simara 
Published: August 2017

Esse artigo mostra as visões de mundo dos eleitores para com o processo eleitoral de dois municípios de Pernambuco através do método qualitativo. A técnica focus groups (grupos focais) foi utilizada para a coleta de dados e posterior construção da interpretação dos contextos sociais abordados. Inicialmente, narramos as visões de mundo dos eleitores. Nesta narrativa evidenciamos o que os eleitores pensam sobre economia local, problemas da cidade e como ocorre a disputa eleitoral. Em seguida, os dados contidos na narrativa sofrem interpretação. Dela surgem conceitos que clarificam a dinâmica eleitoral dos municípios pesquisados. O poder da prefeitura na disputa eleitoral, a relação íntima entre indivíduo e político e a limitação explicativa do voto retrospectivo para a compreensão da escolha do eleitor são as principais conclusões deste artigo.
Sport and Sex-Specific Reporting Trends in the Epidemiology of Concussions Sustained by High School Athletes
Authors: Schallmo Michael S. , Weiner Joseph A. , Hsu Wellington K. 
Published: August 2017

Background:
Approximately 300,000 U.S. adolescents sustain concussions annually while participating in organized athletics. This study aimed to track sex and sport-specific trends among high school sports-related concussions over time, to identify whether a particular sport predisposes athletes to a higher risk, and to assess whether traumatic brain injury law enactments have been successful in improving recognition.

Methods:
Injury data for academic years 2005 to 2014 were collected from annual reports generated by High School RIO (Reporting Information Online). The relative proportions of total estimated concussions to total estimated injuries were compared using an injury proportion ratio. The concussion rate was defined as the number of concussions per 10,000 athlete exposures (1 athlete participating in 1 practice or competition), with rates compared using a rate ratio. To evaluate the impact of legislation on sports-related concussions in this population, trends in concussion rates and proportions were analyzed before enactment (academic years 2005-2009) and after enactment (academic years 2010-2014).

Results:
Between 2005-2006 and 2014-2015, a significant increase (p < 0.0001) in the overall number of concussions for all sports combined, the overall concussion rate (rate ratio, 2.30 [95% confidence interval, 2.04 to 2.59]), and the overall proportion of concussions (injury proportion ratio, 2.68 [95% confidence interval, 2.66 to 2.70]) was seen. Based on the injury proportion ratio, during the 2014-2015 academic year, concussions were more common in girls’ soccer than in any other sport (p < 0.0001).

Conclusions:
Because of potentially devastating consequences, concussion prevention and recognition measures continue to be emphasized in high school contact sports. The data in our study suggest that significant increases in the overall rate and proportion of reported concussions during the past decade could have been affected by traumatic brain injury legislation. To our knowledge, this is the first study to show that girls’ soccer players may have an even greater risk of sustaining a concussion than all other sports.

Clinical Relevance:
Sports-related concussions in adolescent athletes can have devastating consequences, and we now know that female athletes, especially girls’ soccer players, may be at an even greater risk for sustaining this injury than all other athletes. Knowledge of the trends identified by this study may help lead to policy and prevention measures that can accommodate each sport effectively and potentially halt these trends.
A Gauss-Newton Trust-Region Solver for Large-Scale History-Matching Problems
Authors: Gao Guohua , Jiang Hao , Hagen Paul van , Vink Jeroen C. , Wells Terence 
Published: August 2017

Summary
Solving the Gauss-Newton trust-region subproblem (TRS) with traditional solvers involves solving a symmetric linear system with dimensions the same as the number of uncertain parameters, and it is extremely computational expensive for history-matching problems with a large number of uncertain parameters. A new trust-region (TR) solver is developed to save both memory usage and computational cost, and its performance is compared with the well-known direct TR solver using factorization and iterative TR solver using the conjugate-gradient approach.
With application of the matrix inverse lemma, the original TRS is transformed to a new problem that involves solving a linear system with the number of observed data. For history-matching problems in which the number of uncertain parameters is much larger than the number of observed data, both memory usage and central-processing-unit (CPU) time can be significantly reduced compared with solving the original problem directly. An auto-adaptive power-law transformation technique is developed to transform the original strong nonlinear function to a new function that behaves more like a linear function. Finally, the Newton-Raphson method with some modifications is applied to solve the TRS.
The proposed approach is applied to find best-match solutions in Bayesian-style assisted-history-matching (AHM) problems. It is first validated on a set of synthetic test problems with different numbers of uncertain parameters and different numbers of observed data. In terms of efficiency, the new approach is shown to significantly reduce both the computational cost and memory usage compared with the direct TR solver of the GALAHAD optimization library (see http://www.galahad.rl.ac.uk/doc.html). In terms of robustness, the new approach is able to reduce the risk of failure to find the correct solution significantly, compared with the iterative TR solver of the GALAHAD optimization library. Our numerical results indicate that the new solver can solve large-scale TRSs with reasonably small amounts of CPU time (in seconds) and memory (in MB). Compared with the CPU time and memory used for completing one reservoir simulation run for the same problem (in hours and in GB), the cost for finding the best-match parameter values using our new TR solver is negligible. The proposed approach has been implemented in our in-house reservoir simulation and history-matching system, and has been validated on a real-reservoir-simulation model. This illustrates the main result of this paper: the development of a robust Gauss-Newton TR approach, which is applicable for large-scale history-matching problems with negligible extra cost in CPU and memory.
Specifying Carbon Dioxide Centrifugal Compressor
Authors: Desai Manthan G. 
Published: August 2017

Summary
This paper highlights the care to be taken by an engineer while specifying and selecting a centrifugal compressor for carbon dioxide (CO2) compression.
With the increase in the levels of CO2 in the atmosphere, there is an increase in the popularity of capturing CO2 emitted from the large source points such as fossil-fuel power plants, steel mills, cement plants, and others before its release to the atmosphere and storing it in geological formations [also used for enhanced oil recovery (EOR) where possible]. The compressors used to transport and store the CO2 at such depths need to compress the gas from atmospheric pressure to the pressures on the order of 200 bar or more.
The critical temperature of CO2 is only 31.1°C, so the CO2 is generally transported and stored in a supercritical state. The thermodynamic properties of supercritical CO2 are considerably different from those of the other real gases that are generally compressed. Further, to achieve this supercritical state, the critical point of CO2 is crossed somewhere in the compression stage. Near critical point, the ideal-gas law will not hold for CO2. Moreover, there is a reduction in the choke margin of the compressor caused by the reduction of the sound speed in CO2, particularly near the thermodynamic critical point. Also, the CO2 compressibility and specific heats are not linear near the critical pressure and temperature. The impurities in the CO2 will affect further the thermodynamic characteristics of the working fluid. Also, the water content in the CO2 makes it extremely corrosive.
Considering all the aspects mentioned previously, specifying the CO2 compressor correctly in terms of the equation of state (EOS) to be used, the interstage pressures and temperatures to be maintained, suggesting the number of impellers per stage to maintain the desired flow coefficient, metallurgy to be selected and scheme of compressor dry gas seals, and others becomes all the more important and is described in the paper.
Study on COD removal mechanism and reaction kinetics of oilfield wastewater
Authors: Yin Xian-Qing , Jing Bo , Chen Wen-Juan , Zhang Jian , Liu Qian , Chen Wu 
Published: August 2017

Abstract
The chemical oxygen demand (COD) removal mechanism and reaction kinetics were mainly studied in the treatment of oilfield oily sewage containing polymer by three-dimensional electrode reactor. The results proved that the residual active oxides O3, H2O2, •OH and active chlorine in the system of electrochemical reaction could be effectively detected, and the COD removal mechanism was co-oxidation of active oxides; Under these experimental conditions: the electrolysis current of 6 A, surface/volume ratio of 6/25(cm2·L−1), the reaction time of 50 min, the CODcr of treated sewage was no more than 50 mg·L−1; the removal reaction of COD conformed to apparent second-order reaction kinetic model, the correlation coefficient R2 was 0.9728, and the apparent reaction rate constant was k = 3.58 × 10−4 (L·min−1·mg−1·m−2). To reach the goal, the CODcr was no more than 50 mg·L−1 in treated sewage, and the theory minimum processing time was 45.73 min. The verification of experimental results was consistent with kinetic equations.