bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of Mechanical Properties of Jute Fiber Epoxy Reinforced by Synthesized Hematite (Fe2O3) Nanoparticles
Authors: Bhuiya Anwarul Kabir , Reza Sumon , Matin Abdul , Islam Ashadul , Gofur A. , Mahmud Abu , Hoque Asadul
Published: May 2019

Jute fiber was modified by epoxy resin and hematite nanoparticle. In this study alpha Fe2O3 nanoparticle in size at 22~23 nm made of sol-gel method commonly known as hematite was used. Chopped and scoured jute fibre was washed, neutralized and finally dried called modified fiber. Modified fiber was grafted with admixture of polyethylene glycol and aluminum salt and grafted sheet was then cut into small pieces. The raw jute fiber was layered using epoxy and pressed preparing Raw Jute Reinforced Epoxy Composite (RJREC). Similarly, the Bleached Jute Reinforced Epoxy Composites (BJREC) and Modified Jute Reinforced Epoxy Composites (BJREC) were also prepared. The Modified Jute Fibre Nano Disperse Epoxy Composites (MJRNDEC) was prepared by sandwiching three layers of Modified jute fabric with epoxy and nano particle. Epoxy sheet with nanoparticles and without nanoparticle were also produced. Produced samples were characterized and compared Tensile in terms of their mechanical properties. Obtained results show that modified jute fiber epoxy nano Fe2O3¬ dispersed composites exert better tensile and flexural strength compared to raw and bleached jute fiber epoxy composites.
Hashtag Unity: Qatar’s digital nationalism in the Gulf crisis
Authors: Oruc Nurgul
Published: May 2019

This article examines digital expressions of solidarity and unity that emerged on social media platforms in Qatar following the outbreak of the Gulf crisis in June 2017. The study undertakes an analysis of public tweets on the social network site Twitter published around Arabic hashtags in Twitter’s Qatar trends in the first two weeks of the blockade. The hashtags attracted thousands of users to form a digitally connected public calling for national unity and solidarity. An qualitative analysis of a sample from 402,962 tweets published around these hashtags reveals that users expressed national unity and solidarity through both visual and textual displays of strength, resilience, loyalty and pride. The article argues that following their emergence, the hashtags not only aimed to cement resistance against the blockade imposed on Qatar but also to forge a national identity that was centred on the persona of the nation’s leader, Sheikh Tamim Al-Thani, while denouncing social and cultural divisions that stemmed from transnational tribal identities.
Programa de Educação Ambiental para Projetos Produtores de Água: Estudo de Caso da Bacia Hidrográfica do Rio Camboriú- SC, Brasil
Authors: Santos Paulo Henrique , Schwingel Paulo Ricardo
Published: May 2019

O Programa Produtor de Água no Brasil é uma iniciativa da Agência Nacional de Águas, criada com o objetivo de reduzir a erosão e o assoreamento de corpos d'água em áreas rurais. O projeto Produtor de Água, que adota a política pública de Pagamento por Serviços Ambientais, foi implementado na Bacia Hidrográfica do Rio Camboriú, Estado de Santa Catarina, em 2013. Uma meta do projeto PA é a criação de um Programa de Educação Ambiental. O presente trabalho apresenta de forma sistematizada uma proposta de Programa de Educação Ambiental para projetos de Produtores de Água. A proposta inclui reuniões com proprietários de rurais e residentes, ações educacionais, desenvolvimento e distribuição de materiais didáticos de divulgação, concursos de redação e programetes, blitz educacional e parcerias com instituições que não estejam envolvidas nos projetos Produtor de Água.
Imaging-Negative Hepatocellular Carcinoma Presents as an Intrabiliary Mass
Authors: Alshati Ali , Bellapravalu Sharad , Srinivasan Indu , Nadir Abdul , Chuang Keng-Yu
Published: May 2019

Hepatocellular carcinoma (HCC) is the second most common cause of cancer-related death and one of the most prevalent cancers worldwide. HCC prognosis remains poor with an average survival rate between 6 and 12 months. Obstructive jaundice, as a main clinical feature, is uncommon in HCC. HCC with bile duct invasion is much rarer than HCC with vascular invasion. We present a case where a patient's HCC was diagnosed by endoscopic retrograde cholangiopancreatography and digital cholangioscopy because his HCC manifested as an obstructing lesion in the intrahepatic duct, but not in the liver.
GENERAL CALCULATION OF WINDING FACTOR FOR MULTI-PHASE/-LAYER ELECTRICAL MACHINES IRRESPECTIVE OF POLES NUMBER
Authors: Ouamara Daoud , Dubas Frédéric , Randi Sid Ali , Benallal Mohamed Nadjib , Espanet Christophe
Published: May 2019

In this paper, a method to calculate the winding factor by only considering stator parameters without the rotor ones is developed. This is interesting because it allows the separation of the stator and rotor design, unlike the existing methods in the literature. A general method based on the matrix representation of a winding is presented. This approach requires the knowledge of four parameters : i) slots number, ii) phases number, iii) layers number, and iv) single-phase spatial distribution. A new feature of the multi-layer windings is introduced, it is called false-zero windings, which is divided into two categories: i) α-windings (i.e., odd false-zero windings), and ii) β-windings (i.e., even false-zero windings). The windings having no false-zero are categorized as γ-windings. The calculations are applied for single and multi-phase/-layer windings. The results of the comparison are satisfactory. The code used for the calculation is given in Appendix.
INDICATORS FOR COMMON CROSSING STRUCTURAL HEALTH MONITORING WITH TRACK-SIDE INERTIAL MEASUREMENTS
Authors: Sysyn Mykola , Gerber Ulf , Nabochenko Olga , Li Yangyang , Kovalchuk Vitalii
Published: May 2019

This paper focuses on the experimental study of an alteration in the railway crossing dynamic response due to the rolling surface degradation during a crossing’s lifecycle. The maximal acceleration measured with the track-side measurement system as well as the impact position monitoring show no significant statistical relation to the rolling surface degradation. The additional spectral features are extracted from the acceleration measurements with a wavelet transform to improve the information usage. The reliable prediction of the railway crossing remaining useful life (RUL) demands the trustworthy indicators of structural health that systematically change during the lifecycle. The popular simple machine learning methods like principal component analysis and partial least square regression are used to retrieve two indicators from the experimental information. The feature ranking and selection are used to remove the redundant information and increase the relation of indicators to the lifetime.
ADSORPTION OF CATIONIC DYE FROM AQUEOUS SOLUTION USING COMPOSITE CHICKEN EGGSHELL - ANTHILL CLAY: OPTIMIZATION OF ADSORBENT PREPARATION CONDITIONS
Authors: Yusuff Adeyinka Sikiru
Published: May 2019

A composite adsorbent was prepared from anthill and eggshell mixture, using an incipient wetness impregnation method and it was used for an adsorption of cationic dye (methylene blue, MB) from an aqueous solution. The effects of three preparation parameters including calcination temperature, calcination time and mixing ratio of eggshell to anthill on the MB uptake were investigated using the central composite design (CCD) of response surface methodology (RSM). A quadratic model was developed to predict the response with a high accuracy. The optimal adsorbent sample was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and X-ray fluorescence (XRF) spectroscopy. The obtained results revealed that the calcination temperature significantly affected the MB adsorption. The optimum MB uptake of 23.87 mg/g was achieved under the optimum conditions including a calcination temperature of 823.45 °C, calcination time of 3.54 h and eggshell/anthill mixing ratio of 1.89:1. A detailed characterization of an optimal adsorbent sample confirmed the presence of pores, active functional groups and various molecular adsorption sites on its surface. Equilibrium adsorption isotherms and kinetics were also studied and it was revealed that the isotherms and kinetics data fitted well to the Freundlich model and pseudo-second-order kinetics model, respectively.
Regime Constitucional da Assistência Social
Authors: Teles Katia Cristine Oliveira
Published: May 2019

O presente artigo objetiva analisar o regime constitucional da Assistência Social para demonstrar o verdadeiro papel desse subsistema para assegurar o alcance do princípio da universalidade da cobertura e do atendimento, prescrito no artigo 194, parágrafo único, inciso I, da Constituição de 1988. Para tanto, parte-se da prescrição constitucional (artigo 201) de que a previdência social é devida ao trabalhador e seu dependente, mas que existe uma parte da população brasileira que não trabalha ou está em condições precárias de trabalho, e que demanda proteção social diante da sua situação de vulnerabilidade. Para desenvolver esta pesquisa, partiu-se do método dedutivo, em que a assistência social foi estudada preliminarmente no plano constitucional para, depois, ser compendiada a jurisprudência pátria com o intuito de obter resultados teóricos e empíricos da realidade da seguridade social no Brasil, especialmente em relação à concretização da assistência social na busca da universalização.
Repercussão Geral no Recurso Extraordinário e seu Impacto na Seara Tributária
Authors: Silveira Sebastião Sergio da , Silva Alcides Belfort da
Published: May 2019

O presente trabalho tem por objetivo analisar o impacto do filtro processual instituído pela Emenda Constitucional nº 45, qual seja, a repercussão geral no recurso extraordinário e o seu propósito de celeridade processual junto ao Supremo Tribunal Federal. Trata-se de um requisito de admissibilidade do recurso extraordinário, que foi inspirado no direito norte-americano e tem como principal objetivo solucionar a crise vivenciada pela Suprema Corte. Para a verificação da repercussão geral deverá ser levada em consideração a existência, ou não, de questões relevantes do ponto de vista econômico, político, social, ou jurídico, que ultrapassem os interesses subjetivos da causa (CPC, §1º do art. 543-A), atual redação dada pelo NCPC nos termos do artigo 1.035. É justamente neste ponto a pertinência que guarda com o Direito Tributário, vez que tal ramo (ou setor, como preferem outros) impacta na vida do cidadão de maneira incisiva. Assim, a maioria das causas tributárias, devido ao seu impacto social e jurídico, desembocam no Supremo Tribunal Federal, sendo que a Corte é responsável por delimitar o tema da forma mais consentânea possível.
Direito Fundamental à Nacionalidade no Brasil
Authors: Arriaga Lara
Published: May 2019

Este artigo tem como objeto analisar o acesso do estrangeiro à  nacionalidade no Brasil e os direitos que lhe são decorrentes. Aborda, primeiramente, a adesão do País aos documentos internacionais de proteção à  nacionalidade. Expõe, em seguida, o modo de concessão dessa garantia, bem como sua previsão legal. Mostra, após, como se dá a  distinção entre nacionais e estrangeiros sob a ótica dos direitos fundamentais. Descreve, ainda, quais são as perspectivas para o século XXI no que tange ao acesso à  nacionalidade. Em seguida, estuda algumas jurisprudências que mostram como as cortes nacionais têm se agido no que  tange à  concessão de direitos aos estrangeiros, como o acesso à justica, à saúde e à educação. Finalmente, discute a Lei 13.445/2017 e suas mudanças em relação à legislação anterior. Com o estudo, verificou-se que diversos direitos, os quais a lei garantia expressamente apenas aos nacionais, têm sido reconhecidos pelos tribunais e que o Estatuto do Estrangeiro de 1980 silenciava em relação à previsão de direitos e deveres aos imigrantes. Constatou-se, que a nova Lei de Migrações possui, todavia, lacunas e nela, há artigos que podem gerar diversos tipos de interpretações, principalmente com relação aos direitos dos apátridas.
Procesamiento de la información lingüística y lenguaje del pensamiento
Authors: Destéfano Mariela
Published: May 2019

En la psicología cognitiva del procesamiento de la información el lenguaje puede entenderse como un sistema de la mente/cerebro en el cual los outputs resultan de la aplicación de ciertas operaciones sobre representaciones a partir de ciertos inputs. En este trabajo quisiera argumentar contra la idea de que el lenguaje del pensamiento es el formato de las representaciones del procesamiento de la información lingüística. Primero, evaluaré los “argumentos del regreso” con los que se ha intentado sostener la tesis escéptica de este trabajo. Sostendré que estos argumentos no constituyen una buena estrategia para desechar al lenguaje del pensamiento como vehículo representacional. Segundo, desarrollaré una “inferencia a la explicación menos probable” con la que considero se puede poner en duda el rol del lenguaje del pensamiento como vehículo del procesamiento del lenguaje.
Voltaire historiador. A propósito de la Histoire de Charles XII
Authors: Ratto Adrián
Published: May 2019

La Histoire de Charles XII, roi de Suède (1731) es un texto a menudo desvalorizado por los especialistas en los trabajos históricos e historiográficos de Voltaire, en la medida en que ven en él una obra menor, que se encontraría más cerca de la Henriade, el poema épico que el filósofo había publicado en 1728 en honor a Enrique IV, que de sus grandes trabajos históricos, el Siècle de Louis XIV (1751) y el Essai sur les mœurs et l’esprit des nations (1756). El objetivo de este trabajo es demostrar que la Histoire de Charles XII anticipa, a pesar de ser uno de los primeros escritos históricos de Voltaire, el método que utilizaría a partir de los años 40 en sus obras mayores. Además, el texto pone de relieve la existencia de cierta distancia entre el programa que el filósofo se propone ejecutar en el escrito y su materialización. Por otra parte, el artículo arroja algunas luces sobre el papel de los “grandes hombres” en la filosofía de la historia de Voltaire.
Assessment of the diagnostic ability of RIFLE and SOFA scoring systems in comparison with protein biomarkers in acute kidney injury
Authors: Abedi Siavash , Makhlough Atieh , Rafie Alireza , Sharifpour Ali , Aliyali Masoud , Kordjazi Mohamadmehdi
Published: May 2019

Background

We aimed to assess the diagnostic sensitivity of Risk, Injury, Failure, Loss, and End-stage (RIFLE) and Sequential Organ Failure Assessment (SOFA) scoring systems regarding the serum creatinine level in acute kidney injury (AKI) patients hospitalized in the intensive care unit (ICU). This study also aims to compare the sensitivity of these scoring systems with that of mitochondrial pyruvate carrier 1 (MPC-1), interleukin-10 (IL-10) and neutrophil gelatinase-associated lipocalin (NGAL) as biomarkers.

Methods

This is a cross-sectional study. Thirty patients with increased creatinine level and decreased urine output were recognized as AKI patients, and 30 patients were selected as the control group. The serum levels of each of the proteins of interest were measured at the initial state (moment of entrance) and final state (14th day in the ICU). Statistical analysis was performed with respect to t-test, and a p-value < 0.05 was considered significant. The diagnostic ability of biomarkers was assessed using receiver operating characteristic (ROC) curve.

Results

The majority of patients were recognized in the risk level of RIFLE, and level 1 of SOFA scoring system. There was no correlation between RIFLE and SOFA (p = 0.123). The expression of MPC-1, IL-10 and NGAL was more remarkable compared with the serum creatinine level. The ROC area change for MPC-1 and IL-10 was higher compared with that for NGAL. As a result, MPC-1 and IL-10 are more reliable biomarkers than NGAL to predict the incidence of AKI in the earlier stage.

Conclusions

There was no significant correlation between SOFA and RIFLE classification, and also the sensitivity of these scoring systems was identified at the risk level for AKI patients. Instead, the level of biomarkers alters earlier, and in higher concentration, than creatinine and urine output changes; therefore, they are more reliable than RIFLE and SOFA scoring systems for prognosis purposes.
A sociological analysis of moves in the formation of Iranian epitaphs
Authors: Karimnia Amin , Mohammad Jafari Fatemeh
Published: May 2019

This study investigated various manifestations of gravestone inscriptions to find different types of moves in the formation of such inscriptions in two Iranian social classes. The sample of the study included forty epitaphs in two shrines in the north and west of Tehran. Each epitaph was then photographed for analysis. Swales’ genre move model was used to analyze the data. The moves involved word choice, content, graphics, socio-cultural values, and written communicative practices. Considering socio-cultural factors characterizing the social classes, the results revealed four moves in the epitaphs in the Shrine located in north of Tehran, and eight moves in the Shrine located in west of Tehran. Out of the total of eight moves observed, three were different in the two classes. Comparing these patterns of moves and their frequencies, various emotional, structural, lexical, gender-specific, and age-specific differences were observed.
Nachhaltige Stadtentwicklung über kommunale Ernährungssysteme: Marktakteursnetzwerke als Ansatzpunkte zur Gestaltung und Steuerung
Authors: Sipple David , Schanz Heiner
Published: May 2019

Food markets are not considered to be a topic for governance on municipal levels. One reason for this is the de-localization of modern food systems, which is correlating with processes of globalization and differentiation (horizontally by different food groups, vertically by value creation stages). This is leading to an increasing complexity and declining transparency of production-, process- and value chains within food markets. Moreover, there is evidence for strong concentration processes especially within the German food retail sector, where a few large competitors divide the market among themselves. Because of that, food markets are perceived to be hardly accessible for governance approaches and possibilities of coordination on municipal levels, such as strengthening ecological sustainability or regional identity. But at the same time, there is a variety of companies or ‘market actors’ producing, processing and retailing food, located within municipalities and embedded in and connected to each other via food markets on municipal, regional, national and international levels. The existence of these food supply market networks within municipalities are opening up the possibility of capturing and describing them as well as analyzing their structures with methods of social network analysis (SNA). While analyzing the horizontal market networks of food supply within two South-German municipalities, the present study intends to develop a systematic approach for capturing market structures of food supply on municipal levels and – building on this – deriving related governance approaches and coordination possibilities.
Material Characterization of GFRP Bars in Compression Using a New Test Method
Authors: Khorramian Koosha , Sadeghian Pedram
Published: May 2019

This article presents a new test method for determining the mechanical properties of glass fiber–reinforced polymer (GFRP) composite bars in compression, namely the compressive strength, compressive modulus of elasticity, ultimate crushing strain, and compressive stress-strain curves of the bars. The contribution of GFRP bars in compression is currently neglected by major design guidelines related to GFRP-reinforced concrete columns. However, the demand for using GFRP bars is increasing because multiple researchers have shown the effectiveness of the bars in concrete columns. Thus, the need for characterization of the mechanical properties of GFRP bars is increasing, while there is no standardized test method to evaluate the compressive properties of these bars. Therefore, in this article, a new test method is proposed for evaluating the compressive characteristics of GFRP bars. The proposed test method was examined through testing a total of 35 specimens. It was observed that the test method was able to evaluate the compressive characteristics of the GFRP bars successfully. Three different modes of compressive failure were observed, which were related to the crushing of GFRP bars in different locations in the bar, but no premature failure or bar buckling was observed. Moreover, a comparison between tensile and compression characteristics of the GFRP bars showed that the tensile test results are not sufficient to estimate the compressive characteristics, and performing a compression test is necessary.
Improving Centerline Solidification Crack Resistivity of AA 2024 Using Tandem Side-by-Side GTAW Technique
Authors: Albannai Abdulaziz I. , Aloraier Abdulkareem S. , Alaskari Ayman M. , Alawadhi Meshal Y.
Published: May 2019

In this study, four gas tungsten arc welding (GTAW) techniques were employed by varying the travel speed and arc motion to analyze centerline solidification crack resistivity, namely slow (3.6 mm/s), fast (8.4 mm/s), weaving (4.2 mm/s), and tandem side-by-side with alternating working electrodes (3.6 mm/s). Welding high-strength materials like aluminum alloy 2024 (AA 2024) using fusion welding processes may cause centerline solidification cracking due to the wide range of solidification temperatures. AA 2024 was used because of its high susceptibility to centerline solidification cracking; it is mainly used in aerospace industries. This alloy is considered a nonweldable material when fusion welding processes are applied. A GTAW process was used because it has better control over the welding parameters and produces high quality welds. Overall, the tandem technique resulted in thinner axial grain structure surrounded by some equiaxed grains in the weld zone. Moreover, the resistance of centerline solidification cracking was improved by using the tandem technique because of the resulting disordered grain orientation, which reduces crack energy by deflecting the crack path and preventing crack propagation through thickness. In addition, a reduction in the average grain size of 40–60 % was achieved by implementing the tandem technique because of its fast cooling rate. The tandem technique also showed better improvement in microhardness in the weld zone compared to the other three techniques.
Synaptic Wiring of Corticostriatal Circuits in Basal Ganglia: Insights into the Pathogenesis of Neuropsychiatric Disorders
Authors: Kuo Hsiao-Ying , Liu Fu-Chin
Published: May 2019

The striatum is a key hub in the basal ganglia for processing neural information from the sensory, motor, and limbic cortices. The massive and diverse cortical inputs entering the striatum allow the basal ganglia to perform a repertoire of neurological functions ranging from basic level of motor control to high level of cognition. The heterogeneity of the corticostriatal circuits, however, also renders the system susceptible to a repertoire of neurological diseases. Clinical and animal model studies have indicated that defective development of the corticostriatal circuits is linked to various neuropsychiatric disorders, including attention-deficit hyperactivity disorder (ADHD), Tourette syndrome, obsessive-compulsive disorder (OCD), autism spectrum disorder (ASD), and schizophrenia. Importantly, many neuropsychiatric disease-risk genes have been found to form the molecular building blocks of the circuit wiring at the synaptic level. It is therefore imperative to understand how corticostriatal connectivity is established during development. Here, we review the construction during development of these corticostriatal circuits at the synaptic level, which should provide important insights into the pathogenesis of neuropsychiatric disorders related to the basal ganglia and help the development of appropriate therapies for these diseases.
The Paf1 Complex Broadly Impacts the Transcriptome ofSaccharomyces cerevisiae
Authors: Ellison Mitchell A , Lederer Alex R , Warner Marcie H , Mavrich Travis N , Raupach Elizabeth A , Heisler Lawrence E , Nislow Corey , Lee Miler T , Arndt Karen M
Published: May 2019

The Polymerase Associated Factor 1 complex (Paf1C) is a multifunctional regulator of eukaryotic gene expression important for the coordination of transcription with chromatin modification and post-transcriptional processes. In this study, we investigated the extent to which the functions of Paf1C combine to regulate the Saccharomyces cerevisiae transcriptome. While previous studies focused on the roles of Paf1C in controlling mRNA levels, here, we took advantage of a genetic background that enriches for unstable transcripts, and demonstrate that deletion of PAF1 affects all classes of Pol II transcripts including multiple classes of noncoding RNAs (ncRNAs). By conducting a de novo differential expression analysis independent of gene annotations, we found that Paf1 positively and negatively regulates antisense transcription at multiple loci. Comparisons with nascent transcript data revealed that many, but not all, changes in RNA levels detected by our analysis are due to changes in transcription instead of post-transcriptional events. To investigate the mechanisms by which Paf1 regulates protein-coding genes, we focused on genes involved in iron and phosphate homeostasis, which were differentially affected by PAF1 deletion. Our results indicate that Paf1 stimulates phosphate gene expression through a mechanism that is independent of any individual Paf1C-dependent histone modification. In contrast, the inhibition of iron gene expression by Paf1 correlates with a defect in H3 K36 trimethylation. Finally, we showed that one iron regulon gene, FET4, is coordinately controlled by Paf1 and transcription of upstream noncoding DNA. Together, these data identify roles for Paf1C in controlling both coding and noncoding regions of the yeast genome.
Un camino a la modernidad: Miguel Fisac y la estética de lo popular
Authors: Díaz del Campo Martín Mantero Ramón Vicente
Published: May 2019

Miguel Fisac (1913-2006) fue uno de los protagonistas de la recuperación del movimiento moderno en la arquitectura española. Durante la década de los cincuenta su trayectoria profesional destacó, entre otras cuestiones, por la construcción de varios edificios inspirados en la arquitectura tradicional. Estas obras pusieron sobre la mesa diversos elementos para la gestación de una nueva tipología arquitectónica que fue ampliamente utilizada en los años siguientes y despertó un gran interés entre sus compañeros de profesión. La obra de Miguel Fisac es poliédrica, configurada por una intensa actividad constructiva, pero al mismo tiempo rica en aspectos teóricos, en ambas facetas lo popular estuvo muy presente.
Imaginar el pueblo / (des)montar la Guerra fría. Apuntes en torno a La rabbia (1963), de Pier Paolo Pasolini
Authors: Vindel Gamonal Jaime
Published: May 2019

Este artículo rastrea el significado de esta película en el contexto de la cultura italiana de principios de los años sesenta. Para ello, se remonta a la génesis del movimiento antifascista y, más particularmente, del pensamiento de Antonio Gramsci en el período de entreguerras. A continuación, se analiza el modo en que tanto la obra del antropólogo Ernesto de Martino como la trayectoria de Pasolini aparecen tensionadas por su relación con la herencia gramsciana. Más adelante, se desmenuza la comprensión histórica de La rabbia en diálogo con los conceptos de “imagen dialéctica” (Walter Benjamin) y “gesto” (Giorgio Agamben), subrayando el modo en que ambos encarnan en la película de Pasolini una fractura con la idea gramsciana del marxismo como reforma moral moderna. Finalmente, esos argumentos son relacionados con la aproximación a las culturas campesinas desde una política del pianto rebelde, en el cruce entre los estudios antropológicos de De Martino, la poética de Pasolini y la construcción de una semiótica cinematográfica de la subalternidad.
El octavo espejo: Las Meninas en el despacho de verano del Alcázar de Madrid
Authors: Cruz Yábar Juan María
Published: May 2019

Tras aportar nuestra visión a partir de Palomino y de algunos debates doctrinales en torno a las Meninas, proponemos una nueva interpretación del cuadro a partir de su ubicación ori- ginal, el despacho de verano de Felipe IV en el Alcázar de Madrid. Reconstruimos este espacio con sus espejos, bufe- tes y pinturas y desvelamos un programa iconográfico alegórico en él, pero sobre todo los ingeniosos juegos visua- les que tenían lugar entre esos elementos de adorno y el lien- zo, que hacía función de octavo espejo de la estancia.
Artífices de la reforma exterior del monasterio toledano de Santa Fe a finales del siglo XVIII
Authors: Sánchez Rivera Jesús Ángel
Published: May 2019

Se presenta documentación inédita que permite conocer por primera vez cuándo se acometió la reforma de las dos portadas exteriores del monasterio de Santa Fe de Toledo –antaño perteneciente a las Comendadoras de Santiago y hoy incorporado al complejo del Museo de Santa Cruz? y saber quiénes intervinieron en la misma. Asimismo, se analizan ambas realizaciones (portadas de la iglesia y de la portería) en el contexto histórico-artístico de su tiempo, haciendo especial hincapié en la actividad de sus artífices. Entre ellos, destaca la participación de José Antonio Vina- cer, escultor de origen tirolés que trabajó en el ámbito tole- dano del último cuarto del siglo XVIII.
Sistemas narrativos historiográficos: La realidad de la ficción en Pedro Bohórquez, el Inca del Tucumán
Authors: Lavagnino Nicolás
Published: May 2019

El presente artículo atiende dos preguntas interrelacionadas. Por un lado, se interroga por el estatuto de la ficción, incluyendo entre sus modalidades a la narración. Por otro lado, se enfoca la especificidad de la operación historiográfica y su vinculación con las modalidades ficcionales. Para ello se avanza en el entrecruzamiento de la filosofía narrativista de la historia y de la teoría de sistemas, considerando para ello a autores clave como Hayden White y Niklas Luhmann. Finalmente, se abordará una narrativa en particular, la obra de Teresa Piossek Prebisch, Pedro Bohórquez, el Inca del Tucumán, lo cual permitirá observar este cruce teórico en funcionamiento. Y, a la vez, poner en perspectiva apropiadamente el problema, rasgos y alcance del recurso ficcional en el marco de lo que aquí se denomina sistemas narrativos historiográficos.
Patient-Friendly Language to Facilitate Treatment Choice for Patients with Cancer
Authors: Kim Janice , Gao Jennifer , Amiri-Kordestani Laleh , Beaver Julia A. , Kluetz Paul
Published: May 2019

Resources are needed to assist patients in understanding their diagnoses and considering treatment options. This commentary focuses on improving the language used to communicate disease and treatment information so that patients can make informed decisions.
Safe Opioid Use, Storage, and Disposal Strategies in Cancer Pain Management
Authors: Reddy Akhila , de la Cruz Maxine
Published: May 2019

Opioids are required by a majority of patients with advanced cancer. Oncologists and palliative care clinicians are faced with the challenge of safely prescribing opioids in the current environment of an opioid crisis. Many patients with cancer use opioids unsafely, store them in unsecure locations, and do not dispose of unused opioids, leading to increased availability of these opioids for others to misuse. More than 50% of people who misuse opioids obtain the drugs from a friend or relative with or without their consent. Patient and provider education has been shown to improve safe opioid use, promote secure storage, and also increase disposal of unused opioids safely in drug take-back programs that are now widely available. This article highlights the importance of patient education and cautious opioid prescribing in patients with cancer.

Implications for Practice

The current opioid crisis makes it challenging to effectively manage cancer pain. Providers play a prominent role in minimizing opioid misuse. Cautious prescribing with limits enforced on the quantity of opioids prescribed, close follow-up, and consistent and frequent provision of opioid education are a must. Evidence points to the impact of patient education in promoting safety around opioid use. Most people who misuse prescription opioids obtain them from family or friends. Storing opioids in the open or not disposing of unused opioids increases the availability of these opioids for misuse by others. The importance of not sharing, always locking up, and disposing of unused and expired opioids must be highlighted as part of the opioid education that must be delivered every time that opioids are prescribed. Information about local drug take-back programs may also help increase disposal of unused opioids.
The Primary-Secondary Care Partnership to Improve Outcomes in Chronic Kidney Disease (PSP-CKD) Study: A Cluster Randomized Trial in Primary Care
Authors: Major Rupert W. , Brown Celia , Shepherd David , Rogers Stephen , Pickering Warren , Warwick Graham L. , Barber Shaun , Ashra Nuzhat B. , Morris Tom , Brunskill Nigel J.
Published: May 2019

Significance Statement

Although most patients with CKD are managed in the primary care setting, the evidence base for CKD care in general practice is scant, and it is not clear whether specific CKD management programs can alter outcomes in primary care. The authors conducted a cluster randomized, controlled trial comparing 23 primary care practices offering usual care with 23 primary care practices in which a nurse practitioner helped those practices interpret patient data files and implement guideline-based CKD interventions. They found that the intervention did not affect rate of eGFR decline, but it did lead to significant improvements in processes, quality of care, and the number of patients achieving BP targets. This approach may improve processes of care, potentially reducing the burden of cardiovascular disease in patients with CKD.

Background

Most patients with CKD are managed in the community. Whether nurse-led CKD management programs improve outcomes in patients with CKD in primary care is unclear.

Methods

To assess the effect of such a program on the rate of renal function decline in patients with CKD (stages 3–5) in primary care in the United Kingdom, we conducted a cluster randomized trial, the Primary-Secondary Care Partnership to Improve Outcomes in Chronic Kidney Disease study. A software program designed for the study created a data file of patients with CKD in participating practices. In 23 intervention practices (11,651 patients), a CKD nurse practitioner worked with nominated practice leads to interpret the data file and implement guideline-based patient-level CKD management interventions. The 23 control practices (11,706 patients) received a data file but otherwise, continued usual CKD care. The primary outcome was defined at the cluster (practice) level as the change from baseline of the mean eGFR of the patients with CKD at 6-month intervals up to 42 months. Secondary outcomes included numbers of patients coded for CKD, mean BP, numbers of patients achieving National Institute for Health and Care Excellence BP targets for CKD, and proteinuria measurement.

Results

After 42 months, eGFR did not differ significantly between control and intervention groups. CKD- and proteinuria-related coding improved significantly along with the number of patients achieving BP targets in the intervention group versus usual care.

Conclusions

CKD management programs in primary care may not slow progression of CKD, but they may significantly improve processes of care and potentially decrease the cardiovascular disease burden in CKD and related costs.
Nitric Oxide Synthesis Inhibition and Anti-Inflammatory Effect of Polypeptide Isolated from Chicken Feather Meal in Lipopolysaccharide-Stimulated RAW 264.7 Macrophages
Authors: Inkanuwat Aurachorn , Sukaboon Romteera , Reamtong Onrapak , Asawanonda Pravit , Pattaratanakun Ake , Saisavoey Tanatorn , Sangtanoo Papassara , Karnchanatat Aphichart
Published: May 2019

Nitric oxide (NO) plays a key role in the pathogenesis of inflammation and has been implicated in endotoxin-induced tissue injury. Chicken feather meal is a rich source of amino acids that may serve as a peptide hydrolysate to inhibit NO activity. Anti-inflammatory hydrolysates of chicken feather meal were prepared and fractionated into five samples based on molecular mass. The smallest fraction (<0.65 kDa) exhibited the highest NO inhibitory activity without cytotoxicity towards macrophage RAW 264.7 cells. Further subfractions were sufficient to obtain amino acid sequences by Q-TOF LC-MS/MS ESI analysis. Of these, the SNPSVAGVR (885.97 Da) peptide and its corresponding pure synthetic peptide have inhibitory activity against NO production by RAW 264.7 cells (IC50=(55.2±0.2) mM) without cytotoxicity. Reverse transcriptase polymerase chain reaction (RT-PCR) and quantitative real-time RT-PCR results revealed that the peptide of the obtained fraction reduced transcript expression levels of the pro-inflammatory cytokines iNOS, TNF-α, COX-2 and IL-6 in lipopolysaccharide-stimulated RAW 264.7 cells. These results suggest that the peptides derived from the chicken feather meal protein could potentially be used as a promising ingredient in functional foods or nutraceuticals against inflammatory diseases.
KARAKTERISTIK DIAMETER AEROSOL LURUHAN THORON DENGAN IMPAKTOR BERTINGKAT
Authors: Mulyadi Eko
Published: May 2019

Telah dikembangkan penelitian tentang Thoron dan luruhannya. Pada penelitianini telah dilakukan pengukuran diameter aerosol luruhan Thoron dalam ruang tertutup denganperlakuan chamber tertutup dan terbuka. Pengukuran diameter aerosol luruhan Thoron dilakukanmenggunakan impaktor Andersen 13 tingkat dengan laju alir 3 liter permenit. Setiap tingkatimpaktor dicacah dengan spektrometri gamma HP-Ge pada energi 238.6 keV (isotop Pb-2I2). Hasilstudi menunjukkan bahwa ikatan aerosol luruhan Thoron terdistribusi bimodal dengan ActivityMedian Aerodynamic Diameter (AMAD) adalah (0. I :t 0.004) j.lm fraksi 36% dan (7.0 :t 5.6) j.lmfraksi 6% dengan perlakuan chamber tertutup dan AMAD (0.1 :t 0.006) j.lm fraksi 39% dan (4.0 :t3.0) j.lm fraksi 8% dengan perlakuan chamber terbuka.
KAJIAN PEMANFAATAN SLUDGE IPAL KOTA JOGJAKARTA SEBAGAI PUPUK ORGANIK YANG RAMAH LINGKUNGAN
Authors: Yazid Moch , Kusno Mintargo , Supriyatni Elisabeth , Budiono Moch Eko
Published: May 2019

KAJIAN PEMANFAATAN SLUDGE IPAL KOTA JOGJAKARTA SEBAGAI PUPUK ORGANIK YANG RAMAHLINGKUNGAN. Telah dilakukan pengkajian kemungkinan pemanfaatan sludge IPAL kota Yogyakarta sebagai pupukorganik ditinjau dari berbagai aspek antara lain kandungan unsur nutrien tanaman, logam berat dan dilakukan upayauntuk mematikan mikroba patogennya. Hasil pengkajian ini diharapkan dapat digunakan sebagai bahanpertimbangan untuk menganalisis dampak penggunaan sludge tersebut sebagai pupuk. Sampel sludge diambil dariInstalasi Pengolahan Air Limbah Kota Jogjakarta yang berlokasi di Bantul. Sampel sludge dikeringkan pada suhukamar, dihaluskan dan ditimbang sesuai keperluan jenis analisisnya. Untuk analisis unsur makro dilakukan denganmetode Analisis Pengaktifan Netron Cepat (APNC), sedangkan unsur mikro menggunakan Analisa PengaktifanNetron (APN). Pencacahan cuplikan menggunakan spektrometer gamma dengan detektor Ge(Li). Analisis logamberat Pb, Cd dan Hg dilakukan menggunakan AAS, sedangkan Sm, Th, Sb, Cr dan Co menggunakan APN.Sedangkan upaya untuk mematikan mikroba patogen dilakukan dengan irradiasi sampel menggunakan irradiatorCo-60 dengan variasi dosis 5, 10, 15, 20 dan 25 kGy. Pengamatan mikrobiologis dilakukan di LaboratoriumMikrobiologi, Fakultas Biologi UGM yang meliputi , bakteria total, Escheria coli, Streptococcus dan Salmonella. Darihasil analisis dapat diketahui bahwa kandungan unsur hara makro rerata yaitu N sebesar 4,10 ± 0,007 ppm, Psebesar 640,51 ± 14,34 ppm dan K sebesar 3,04 ± 0,06 ppm, sedangkan unsur mikro yang meliputi unsur Mg =79,31 ± 6,48 ppm, Zn = 599,8 ± 42,2 ppm, Cu = 16,13 ± 0,4 ppm, Ca = 117,6 ± 9,20 ppm dan Fe = 4,35 ± 0,18 %.Sedangkan kisaran kandungan logam berat yang meliputi Pb = 73,27 – 125,65 ppm, Cd = 1,44 – 2,59 ppm, Hg tidakterdeteksi. Selain itu, Sm = 0,04 –18,68 ppm, Th = 2,20 – 6,37 ppm; Sb = 1,06 – 76,37 ppm, Cr = 1,94 – 51,40 ppmdan Co = 0,57 – 84,03 ppm. Adapun populasi bakteri yang terbesar adalah Salmonella sp, kemudian Streptococcusdan yang terakhir Escheria coli. Dari hasil analisis tersebut dapat disimpulkan bahwa sludge IPAL kota Yogyakartadapat dimanfaatkan sebagai pupuk organik dengan perlakuan khusus agar unsur Cu, Fe dan Zn tidak melebihi nilaikritis sehingga menghambat pertumbuhan tanaman, sedangkan kandungan berbagai logam berat masih dinilaicukup aman. Adapun dosis efektif untuk menekan populasi bateri total adalah 25 kGy, sedangkan untuk Salmonellasp sebesar 20 kGy dan Escheria coli adalah 15 kGy. Kandungan logam berat di dalam sludge yang tertinggi adalahtimbal (Pb) yaitu sebesar 125,65 ppm
KAJIAN SIFAT SERAP MINERAL MAGNETIT TERHADAP LIMBAH RADIOAKTIF URANIUM CAIR FASE AIR YANG DIGUNAKAN SEBAGAI BAHAN URUG
Authors: Budiono Moch Eko , Sukosrono Sukosrono
Published: May 2019

KAJIAN SIFAT SERAP MINERAL MAGNETIT TERHADAP LIMBAH RADIOAKTIF URANIUM CAIR FASA AIRYANG DIGUNAKAN SEBAGAI BAHAN URUG. Telah dilakukan percobaan penentuan kapasitas serap mineralmagnetit terhadap limbah uranium fase air. Percobaan ini dimaksudkan untuk mendapatkan data yang diperlukandalam suatu kegiatan penelitian bahan isi/urug pada penyimpanan limbah radioaktif. Percobaan dilakukan dengancara memvariasi ukuran butir mineral magnetit dan pH. Ukuran butir divariasi dari 10/20 – 100/120 mesh, sedangkanpH limbah divariasi dari 4 – 10. Dari hasil penelitian ini dapat ditarik kesimpulan yaitu hasil yang paling baik adalahmagnetit dengan ukuran butir 100/120 mesh, pH 7 mempunyai kecepatan perembesan 0,273 cm3/s, koefisienpermeabilitas 0,389 cm/s, porositas 17,21, faktor dekontaminasi 25,62, kapasitas serap 23,75 grek/g dan fraksiterserap 67,24 %.
ANALISIS KESELAMATAN REAKTOR KARTINI BERDASAR KEJADIAN PEMICU YANG DIPOSTULASIKAN
Authors: Sardjono Yohannes , Priyono Eko , Syarip Syarip
Published: May 2019

ANALISIS KESELAMATAN REAKTOR KARTINI BERDASAR KEJADIAN PEMICU YANG DIPOSTULASIKAN.Berdasarkan analisis kejadian pemicu yang dipostulasikan maka ada 8 kejadian yang dipostulasikan (PostulatedInitiating Event) : seperti kehilangan catu daya listrik, kegagalan sistem scram, kehilangan aliran pendingin,kehilangan pendingin, kegagalan transfer cask, kejadian internal/eksternal dan kesalahan manusia. Dari 8 kejadiantersebut, hanya satu kejadian yang menyebabkan terlepasnya bahan radioaktif dari seluruh sistem bahan bakar kelingkungan yaitu kejadian gagalnya sistem pemindah bahan bakar (transfer cask). Urutan kejadiannya adalahtransfer cask jatuh di atas teras reaktor dan mengakibatkan seluruh kelongsong bahan bakar pecah lalu diikutidengan hilangya seluruh air tangki reaktor sehingga seluruh inti hasil belah gas yang ada di celah bahan bakar lepaske lingkungan. Analisis terlepasnya bahan radioaktif ke lingkungan menggunakan paket program dengan bahasaTurbo Pascal dan lama eksekusi 5 menit. Dari hasil analisis diperoleh bahwa dosis radiasi gamma yang diterimaoleh penduduk pada saat 2 jam setelah terjadi kecelakaan pada radius 33 meter adalah 25 rem dan dosis iodinadalah 300 rem berarti proses evakuasi sangat sederhana karena tidak melibatkan penduduk di sekitar kawasanP3TM.
PENGARUH KONSENTRASI BORON TERHADAP SIFAT LISTRIK LAPISAN TIPIS (a-Si:H:B)
Authors: Siswanto Bambang , Wirjoadi Wirjoadi , Sudjatmoko Sudjatmoko
Published: May 2019

PENGARUH KONSENTRASI BORON TERHADAP SIFAT LISTRIK LAPISAN TIPIS (a-Si:H:B). Telah dilakukan deposisibahan Si:B pada permukaan substrat kaca dengan teknik plasma sputtering DC. Deposisi dilakukan untuk beberapaparameter proses yang meliputi: waktu deposisi, tekanan gas dan suhu substrat dengan tujuan dapat diperolehlapisan tipis (a-Si:H:B) yang mempunyai konduktivitas yang memadai sebagai bahan sel surya. Target adalahbahan silikon yang telah dicampur boron dengan konsentrasi (0,1; 0,3; 0,5; 0,7) % berat. Variasi waktu deposisiadalah (0,5 - 2) jam, tekanan gas (1,1 ´ 10-1 - 1,4 ´ 10-1) Torr dan suhu substrat (150–300) oC, sedangkan gasreaktif hidrogen selama proses deposisi dibuat tetap sebesar 4 sccm. Pengukuran sifat listrik dilakukan denganprobe empat titik, konduktivitas dihitung dengan pendekatan rumus matematik. Hasil penelitian menunjukkan bahwaresistansi terkecil sebesar R = 2,73 ´ 108 W, ini diperoleh pada kondisi percobaan, waktu deposisi 1,5 jam, tekanangas 1,4 ´ 10-1 Torr dan suhu substrat 200 oC. Dengan demikian dapat disimpulkan bahwa parameter proses di atasmerupakan parameter deposisi yang optimum untuk pembuatan lapisan tipis (a-Si:H:B).
RANCANGAN SISTEM PENYEMPROT PLASMA UNTUK PEMBUATAN SEL BAHAN BAKAR OKSIDA PADAT : STUDI PEMANASAN PARTIKEL YSZ DALAM PLASMA JET
Authors: Usada Widdi , Suryadi Suryadi , Purwadi Agus
Published: May 2019

RANCANGAN SISTEM PENYEMPROT PLASMA UNTUK PEMBUATAN SEL BAHAN BAKAR OKSIDA PADAT: STUDI PEMANASAN PARTIKEL YSZ DALAM PLASMA JET. Salah satu metode pembuatan elektrolit YSZ padaSOFC adalah dengan penyemprot plasma. Sistem ini memanaskan partikel sehingga meleleh dan mendorong partikeltersebut sampai di target dan membentuk lapisan. Makalah ini menyajikan studi pemanasan partikel YSZ dalamplasma jet. Dengan model sederhana dapat ditunjukkan waktu yang diperlukan untuk melelehkan serbuk partikel YSZdengan ukuran butir 50 μm sekitar 12.10-4 detik.
El pensamiento de maestros y estudiantes: una mirada desde la evaluación
Authors: Acuña Medina Alfonso
Published: May 2019

En este marco se inscribe este avance que hace parte de la investigación: “PRÁCTICAS EVALUATIVAS EN LA ENSEÑANZA BÁSICA Y MEDIA EN EL DEPARTAMENTO DE LA GUAJIRA” Caso tres colegios en cuatro áreas del saber. Investigación abierta durante el desarrollo de la Maestría en Educación, con énfasis en Evaluación Escolar y Desarrollo Educativo Regional, desarrollado en convenio entre la Universidad Pedagógica Nacional yla Universidad de La Guajira.Presentamos una primera aproximación a la mirada que hacemos a la problemática en cuestión en el área de Filosofía, en un primer momento por cuanto el interés es abarcar otras áreas, otros colegios y otros sujetos a nivel departamental.
Ciudadanía y medios de comunicación en la escuela: consideraciones y aproximaciones desde la transformación de las sociedades modernas
Authors: Ariza Ruiz Alejandra
Published: May 2019

Se presentan algunas reflexiones sobre cómo entender, en el marco de las sociedades actuales (sociedades posmodernas, sociedades globalizadas, sociedades del capitalismo flexible), la cuestión de la formación ciudadana en la escuela y, en estrecha relación con ello, la educación escolar en los medios de comunicación. Para ello se abordará, en primera instancia, el establecimiento de a formación ciudadana en medio de la constitución de los sistemas educativos púbicos y masivos, en el marco de la consolidación de las sociedades modernas del Estado­Nación y de la democracia liberal. Se planteará posteriormente cómo los cambios políticos, económicos, sociales y culturales de la época actual cuestionan fuertemente las concepciones de democracia y ciudadanía antaño definidas.En este orden de ideas se genera un interrogante central: ¿Qué debe entender la escuela por formación ciudadana en un contexto cambiante, en el que la ciudadanía y la democracia abren sus marcos de significado? Se sostendrá que la educación escolar en los medios de comunicación puede ser una de las posibles vías de formación para el ejercicio de la ciudadana, dado que hoy éstos son actores estratégicos en la construcción simbólica y económico­política de nuestras sociedades.