bluuebunny/crossref_metadata_2025 huggingface dataset:
Regional CO2 inversions with LUMIA, the Lund University Modular Inversion Algorithm, v1.0
Authors: Monteil Guillaume , Scholze Marko
Published: September 2019

Abstract. Atmospheric inversions are commonly used for estimating large-scale (continental to regional) net sources and sinks of CO2 and other stable atmospheric tracers from their observed concentrations. Recently, there has been an increasing demand from stakeholders for robust estimates of greenhouse gases at country-scale (or higher) resolution, in particular in the framework of the Paris agreement. This increase in resolution is in theory enabled by the growing availability of observations from surface in-situ networks (such as ICOS in Europe) and from remote sensing products (OCO-2, GOSAT-2). The increase in the resolution of inversions is also a necessary step to provide efficient feedback to the process-based (bottom-up) modelling community (vegetation models, fossil fuel emission inventories). This, however, calls for new developments in the inverse modelling systems, mainly in terms of diversification of the inversion approaches, shift from global to regional inversions, and improvement in the computational efficiency, We have developed the Lund University Modular Inversion Algorithm (LUMIA) as a tool to address some of these new developments. LUMIA is meant to be a platform for inverse modelling developments at Lund University. It aims at being a flexible, yet simple and easy to maintain set of tools that modellers can combine to build inverse modelling experiments. It is in particular designed to be transport model agnostic, which should facilitate isolating the transport model errors from those introduced by the inversion setup itself. Here, we briefly describe the motivations for developing LUMIA as well as the underlying development principles, current status and future prospects. We present a first LUMIA inversion setup for a regional CO2 inversions over Europe, based on a new coupling between the Lagrangian FLEXPART (high resolution foreground transport) and the global coarse resolution TM5 transport models, using in-situ data from surface and tall tower observation sites.
Diseño, implementación y evaluación de un programa para el aprendizaje de la guitarra en el grado de educación infantil a través de videotutoriales
Authors: Rodríguez Lozano Carlos , Vicente Nicolás Gregorio
Published: September 2019

Los objetivos de este estudio han sido (1) diseñar e implementar un programa para el aprendizaje de la guitarra en el Grado en Educación Infantil a través de videotutoriales y (2) explorar las percepciones del alumnado y profesorado acerca de dicho programa. Su planteamiento metodológico se fundamenta en el visionado de videotutoriales antes y después de cada una de las seis sesiones de las que consta dicho programa El conjunto de participantes del estudio estuvo formado por el alumnado del último curso del Grado en Educación Infantil de la Universidad de Murcia (N=167) y dos profesores que llevaron a la práctica dicho programa. Para la recogida de información se elaboró un cuestionario ad hoc destinado al alumnado y una entrevista para los profesores. Los resultados revelaron que los participantes otorgan un papel fundamental a los videotutoriales en el proceso de aprendizaje desarrollado en este programa. Asimismo, el 75% del alumnado constató sentir cumplidas sus expectativas iniciales y se sintieron competentes para acompañar canciones con la guitarra en el aula de Educación Infantil.

 

The aim of this work is to design, implement and evaluate a program for learning to play the guitar in the degree of Early Childhood Education through the use of video tutorials. The sample of participants of the study was a group of 167 students of the last year of the Degree in Early Childhood Education of the University of Murcia. For the data collection an ad hoc questionnaire and an interview with the professors responsible for implementing the programme were designed. The results reveal the recognition of the guitar as an appropriate tool for the teachers of Early Childhood Education and the fundamental role of video tutorials in the learning process.
La tecnología digital en la educación musical: una revisión de la literatura científica
Authors: Calderón-Garrido Diego , Cisneros Pablo , García Isaac Diego , Fernández David , De las Heras Rosa
Published: September 2019

La Educación Musical se caracteriza por una transformación constante en la cual muchos docentes se han sumado a las diferentes propuestas que ofrece la tecnología digital en el proceso de enseñanza-aprendizaje y el acercamiento a nuevas posibilidades y nuevo alumnado, respondiendo además a las necesidades de éste. El presente trabajo realiza una revisión descriptiva de la literatura científica más relevante de los últimos diez años centrada en el uso de la Tecnología Educativa. Dicha revisión, es esencial ya que se trata de una línea educativa en constante evolución y cambio debido a los avances de a la tecnología digital. Los resultados muestran cómo todos los ciclos educativos han sido investigados. Así pues, en el caso de Educación Infantil se detecta el diseño de software específico; en Primaria se ha observado que el alumnado con ciertos conocimientos previos de música ha desarrollado significativamente sus competencias; en Secundaria se muestra una transversalidad de aprendizajes a pesar de que se detecta cierto uso para reforzar contenidos tradicionales desaprovechando las nuevas posibilidades, también se refleja el uso que el docente hace de las tecnologías de la información y la comunicación (TIC) en su formación continua; en Educación Superior destaca la docencia online como nuevo modelo de negocio educativo y un intento constante de incluir las experiencias de fuera del aula dentro de ésta; en las enseñanzas habilitantes llama la atención el uso del portafolios como herramienta evaluativa, formativa y una superación de la unidireccionalidad de las primeras propuestas; y, por último, en los ámbitos educativos con necesidades especiales se hace un mayor hincapié en el desarrollo de competencias interpersonales e intrapersonales.
Drinking Water Supply to the Communes of the Couffo Department: Analysis of the Implementation of Programming
Authors: ACACHA Hortensia
Published: September 2019

To understand deeply the factors that explain the non-compliance with communal drinking water supply plans in the Couffo department in this paper, first we have just determined the level of drinking water service that each structureLFB and WHF9 provides to the population. Then the levels of access to drinking water in the localities were also determined. Finally, a diagnosis was made of the system set up in the Couffo department to monitor the implementation of municipal programming. This paper concludes that the actual construction of the works is also independent of the low access to drinking water services in the beneficiary localities at the 5% threshold. However, there is a 43.5% chance that the actual completion of the works depends on poor access to drinking water in the localities. In addition, it appears that the absence of an effective system for monitoring-evaluation of the implementation of communal planning not only favours the execution of unscheduled works but also the non-compliance with the order of priorities in localities to be equipped with WHF.
Career Growth Opportunity on Turnover Intention: The Mediating Role of Organizational Commitment in Multinational Corporations
Authors: Lee Joonghak , Kim Steven B , Chae Chungil , Lee Jaeeun
Published: September 2019

In accelerated globalization, multinational corporations (MNCs) continually seek opportunities to expand their businesses to foreign countries. For sustainable businesses in foreign countries, it is important to retain a large number of local employees which is challenging. Based on existing literature in international human resource management, we hypothesized that organizational commitment (OC) is a mediator in the relationship between perceived career growth opportunity (CGO) and turnover intention (TO) among local employees in MNCs. We analyzed a sample from five companies affiliated with a Korean MNC located in Vietnam. From the mediation analysis, it was evident that OC is a partial mediator between CGO and TO. In particular, CGO and OC were positively correlated, OC and TO were negatively correlated, and CGO and TO were still negatively correlated when OC was adjusted in the regression model. These findings provide a new insight in the field of international human resource in growing MNCs.
Proposal Solar Drying With Heat Storage Applied to Medicinal Plants
Authors: Diaz Valentin Silvera , Reimbrecht Eduardo Gonçalves , Jahn Tales , Junior Oswaldo Hideo Ando
Published: September 2019

In this work, a proposal of an indirect solar dryer with a vacuum solar collector and storage of water-sensitive heater is presented. A mathematical model is presented as the first approximation to evaluate the performance. The test climatic conditions are based on the city of Cascavel (Paraná, Brazil) and the resolution of the model was aided by the EES program. In order to analyze the performance of the system, a model load was created based on the references found in the literature, sample of 80 kg with initial water content of 75% w.b and final of 10% w.b, for drying time of 4 h and 3 h with air velocity of 0.7 m/s and 1.1 m/s respectively. It was possible to simulate the variation of the temperature of the reservoir during the day, as well as the response of the heat exchanger to the variation of temperature of entrance of the fluids and the climatic influence, radiation and ambient temperature in the participation of the solar energy in the total energy consumption of the drying. The simulations suggest good results with solar fraction between 20 and 47 %, meanwhile in the literature the values reported are between 10 and 25%.
Økokritiske litteratursamtaler – en arena for økt bevissthet om økologisk samspill?
Authors: Goga Nina
Published: September 2019

Høsten 2020 innføres nye læreplaner (LK20) i norsk skole. Noe av det nye i disse læreplanene er innføringen av tverrfaglige temaer og kjerneelementer i alle fag. I denne artikkelen retter jeg oppmerksomheten mot det tverrfaglige temaet bærekraftig utvikling for å diskutere hvordan dette kan integreres i norskfaget med vekt på kjerneelementene tekst i kontekst, kritisk tilnærming til tekst og muntlig kommunikasjon. Diskusjonen tar utgangspunkt i teoretiske perspektiver på økokritikk, littera-tursamtaler og skalert lesing, og gjennom et forslag til hvordan lærere kan legge til rette for økokritiske litteratursamtaler om representasjoner av forholdet mellom barn og trær i to barnelitterære klassikere. Artikkelen argumenterer for at denne koblingen mellom oppmerksom lesing av og samtaler om barnelitteratur kan utvikle kritiske perspektiver på verbal-språklige framstillinger av flersanselige naturerfaringer og dermed være et bidrag til økt bevissthet om økologisk samspill. Dette er kunnskap som kan ha betydning for hvordan barn og unge blir språklig rustet til å orientere seg i den overordnete klimadiskursen og for hvordan de vil forstå seg selv i rollen som økoborgere.Nøkkelord: økokritikk, plantestudier, litteratursamtaler, barnelitteratur, Johanna Spyri, L. M. MontgomeryEcocritical literature conversations – An arena for increased awareness of ecological interplay?AbstractBy autumn 2020 a new national school curriculum (LK20) will be introduced in Norway. Some of what is new in LK20 is the introduction of cross-curricular themes and core elements in all school subjects. In this article I turn the attention to the cross-curricular theme sustainable development to discuss how this may be integrated into the school subject Norwegian and with a special emphasis on the core elements text in context, critical approach to text and oral communication. The discussion is based on theoretical perspectives on ecocriticism, literature conversations and scaled reading, and on a specific proposal for how teachers may prepare for ecocritical literature conversations on representations of the relationship between children and trees in two literary classics for children. The article argues that this bridging between careful reading of and conversation about children’s literature may evolve a critical approach to verbal depictions of multisensory nature experiences and hence contribute to increased awareness of ecological interplay. Such knowledge may prove significant to children’s linguistic skills needed to orientate in the overall climate discourse and to how they understand themselves as ecocitizens.Keywords: ecocriticism, plant studies, literature conversations, children’s literature, Johanna Spyri, L. M. Montgomery
Bærekraftdidaktikk som forskningsfelt
Authors: Kvamme Ole Andreas , Sæther Elin , Ødegaard Marianne
Published: September 2019

Environmental and sustainability education is briefly delineated as a research field internationally and within a Norwegian context, followed by a presentation of the particular contributions to this special issue.
Evaluation of the Anyplex II HPV28 Assay in the Detection of Human Papillomavirus in Archival Samples of Oropharyngeal Carcinomas
Authors: Rollo Francesca , Donà Maria Gabriella , Pichi Barbara , Pellini Raul , Covello Renato , Benevolo Maria
Published: September 2019

Context.—

The improved survival and better response to treatments of human papillomavirus (HPV)–related oropharyngeal squamous cell carcinoma (OPSCC) highlight the need for effective tools in evaluating HPV status on formalin-fixed, paraffin-embedded (FFPE) cancer tissues. To date, there is no agreement regarding the most appropriate method for HPV testing on FFPE materials.

Objective.—

We aimed to investigate the performance of the Anyplex II HPV28 (Anyplex) on FFPE OPSCC tissues and to compare it with 2 other methods for HPV-DNA detection and p16 overexpression.

Design.—

One hundred sixty FFPE OPSCCs were evaluated, which had already been analyzed with the INNO-LiPA HPV assay, Xpert HPV assay, and p16 immunostaining.

Results.—

All the samples but 1 provided valid results with the Anyplex, which showed the highest HPV detection rate and a good concordance with all the other methods (κ = 0.75, 95% CI, 0.65–0.85 versus INNO-LiPA; κ = 0.80, 95% CI, 0.70–0.89 versus Xpert; κ = 0.76, 95% CI, 0.65–0.86 versus p16). Moreover, the HPV-driven fraction, based on HPV-DNA and p16 double positivity, was higher with Anyplex (83 of 159, 52.2%) than with the other 2 assays, that is, 78 of 156 (50.0%) for INNO-LiPA and 80 of 160 (50.0%) for Xpert.

Conclusions.—

Anyplex II HPV28 showed a higher HPV detection rate and HPV-associated fraction than the other methods used. This assay is suitable for HPV detection in archival OPSCC tissues.
Histologic Evaluation of Malignant Polyps and Low-Stage Colorectal Carcinoma
Authors: Hagen Catherine E. , Farooq Ayesha
Published: September 2019

Context.—

With widespread screening for colorectal cancer, the number of early-stage colorectal cancers is increasing. Local excision of pT1 tumors is associated with considerably less morbidity and mortality, but this must be weighed against risk of lymph node metastases.

Objective.—

To understand histologic prognostic factors associated with adverse outcome in malignant polyps.

Data Sources.—

Pertinent literature regarding histologic features of prognostic significance in malignant polyps and low-stage colorectal carcinomas is summarized and our institute's cases are used to highlight these histologic features.

Conclusions.—

Poor prognostic factors for malignant polyps include high tumor grade, presence of lymphovascular invasion, tumor less than 1 mm from resection margin, submucosal invasion deeper than 1 mm, and high tumor budding. These features should be assessed by the pathologist and communicated to the clinical team in order to allow proper management.
Founding and Funding a Life Sciences Company: An Overview
Authors: Jordan James , Smith David
Published: September 2019

Founding and funding a company demands that the founding team and their advisors identify and articulate the myriad of challenges and risks that they will face in pursuit of their vision. These factors have implications regarding the technology, market, and team in addition to the regulatory and reimbursement challenges. This article provides the perspective of senior industry investors and legal counsel, and covers the vast array of decisions that form and guide the organization along the pathway to the market, e. g. corporate form, governance, financing, exit.
Strategic Planning for Financing and Growing Biotechnology Companies
Authors: Kearney Claudine
Published: September 2019

There are significant aspirations from both start-ups and existing biotechnology companies, as they endeavor to finance and grow their innovation. Growth demands substantial investments of time, energy and finance. Additionally, they face major risks and uncertainties in the process of growth and new product development in what is a dynamically changing environment. There is no question that the entrepreneurial spirit is core to biotechnology companies but without a congruent strategy for growth and a plan to secure the necessary finances to fund it they will most likely fail. This paper focuses on the process of strategic planning for financing and growing a biotechnology company. First, the strategic planning of biotechnology companies is discussed and a model of strategic congruence for innovation is proposed. Second, a framework for the process of financing a biotechnology innovation is presented. Third, examines the challenges of growing the biotechnology company. Following that final conclusions are drawn.
Impact of the Iraq Marshlands Restoration Program on Livestock Population and Production in the Southern Marshes of Iraq
Authors: Ayied Asaad Y. , Reiss Peter
Published: September 2019

The USAID Iraq Marshlands Restoration Program (IMRP) promoted the application of two promising initiatives tested from 2004 to 2006: (1) the introduction of alfalfa and maize fodder to feed and improve the nutrition of buffalo and (2) the creation of a veterinary service to increase livestock production and health. The livestock sector in the marshlands has seen dramatic improvement since IMRP ended in 2006. These changes are across the board in the absolute number of livestock (from 66,700 heads in 2006 to 111,525 heads in 2017) and in their increasing diversity (buffalo were 74.33% of all livestock in 2006 but decreased to 70.33% in 2017). Buffalo, specifically, had greater birth weight (40 kg in 2006 and 45.6 kg in 2017), greater daily growth rates (0.3 kg in 2006 and 1-1.25 kg in 2017), higher daily milk yields (8.81 kg/day in 2006 and 9.69 kg/day in 2017), and longer lactation periods (150 days in 2006 and 238 days in 2017). There have been accompanying advances in the closely related meat and dairy markets. Live weight and market prices for buffalo and cattle have increased three- to four-fold. Rising daily milk yields also sparked the creation of cottage industries to produce dairy products using higher fat buffalo milk. These changes all point to an increasingly healthy and dynamic livestock sector in the marshlands. However, other anticipated changes in the marshlands did not meet expectations. In 2006, IMRP predicted a strong shift away from the historical dominance of buffalo ownership to a more diversified pattern of ownership that included the relatively newly introduced cattle and a rapid increase in sheep holdings, making the latter the dominate animal. Instead, buffaloes have continued to be the vastly most numerous animals owned in the marshlands. In 2017, they ranged from 65 to 75% of all livestock holdings. Greater access to reflooded marshes by buffalo herders and increased financial earnings realized from meat and dairy production may help to explain the continued reliance on buffalo ownership. IMRP’s introduction of a veterinary service dedicated to working in the marshlands villages was far less successful but highly regarded by Marsh Arabs, being the first time that the services were offered in the marshes.
Anatomical Structure of Caudal Venae Cavae and its Anastomosis with Hepatic Veins in the Buffalo (Buballus Bubalis)
Authors: Karimi Hamid , Ardalani Ghaffar , Mozzaffari Alireza
Published: September 2019

The liver is the largest gland in the digestive system. Most parts of the liver are placing in the right region of the abdominal cavity and fixed by special ligaments, arteries and veins. The blood of the digestive system is drained into the liver by the portal vein. In this survey, the relationship between portal vein with hepatic veins, types of hepatic veins, manner of drainage of hepatic veins and also manner of drainage of the portal vein into caudal vena cava are studied.
Thirty healthy livers of buffalo are selected from Urmia industrial slaughterhouse and biometrical studies performed on them. Also, the latex injection is used for observation of anastomosis of different veins in the liver.
Results of liver biometry are followed:
Average of weight of liver = 4380±1173/30gr, average of length of liver = 467.5±47/00972mm, average of wide of liver = 270.8±38/90934 mm270.8±38/90934 mm, average length of gallbladder = 109.66±13/7673mm, average of wide of gallbladder = 70.4±17/7426mm, average of caudal vena cava canal = 151.06 ±28.6854, Average of diameter of portal vein = 30.93±4.4430 and average of caliber of portal vein in entrance to liver = 39.26±6.2098.
The liver veins were short veins, which are occupied parenchyma of the liver. These veins are received more branch of small veins. All of these veins were draining into abdominolateral wall of inter hepatic part of the portal vein. Results of this research are showed which inter hepatic veins have a different diameter. Rang of this diameter was from 0.5 to 3 mm or more. Interhepatic veins were classified according to the size of their calibre into three groups, large intrahepatic veins (they were generally more 3mm in diameter), intermediate interhepatic veins (they were 1to 3 mm in diameter) and small interhepatic veins (they were less 0.5 to 1 mm in diameter). Results of this study are showed which the average number of large foramen were 3.8, the average number of medium foramen was 8.3, and an average number of small foramen was 36.56. The studies on derivatives of portal vein on the buffalo liver have appeared which portal veins are dividing three principals trunks (left, middle and right). Left principle trunk is dividing into three branches (proximal, middle and distal). The outlet of all three types of hepatic veins had a valvular fold in entrance into caudal vena cava, which is named operculum the direction of this valve was toward the heart. Also, these research results have appeared which liver of buffalo is weightier and bigger than cattle.
Resíduos sólidos: evidências científicas sobre sua disposição final e impactos ambientais
Authors: Pessoa Dihego Sousa , Cosme Ana Maria Ferreira , Silva Viviane Farias , Costa Rubenia de Oliveira , Lima Vera Lucia Antunes de , Ferreira Aline Costa
Published: September 2019

A Gestão dos Resíduos Sólidos Urbanos (RSU) é uma das grandes demandas ambientais do mundo contemporâneo e os problemas enfrentados por sua destinação inadequada são ainda maiores por causa do aumento desproporcional da geração de resíduos em volume, resultante de um contexto de maior urbanização, crescimento populacional e globalização econômica. Tendo em vista que atualmente as principais formas de destinação dos Resíduos Sólidos utilizadas não tem conseguido solucionar de maneira satisfatória a maioria dos problemas ambientais, existe cada vez mais a necessidade de encontrar não só alternativas para disposição final, mas opções que considerem o problema de maneira sistêmica evidenciando modelo produtivo e ambiental como um todo a fim de formular estratégias, promover a sustentabilidade ambiental e a melhoria da qualidade de vida da população. Nesse contexto, a presente pesquisa foi realizada objetivando-se analisar as contribuições mais recentes publicadas na literatura científica, através da revisão sistêmica, pela consulta de bancos de dados virtuais de relevância mundial a fim de avaliar a eficiência ambiental e econômica partindo como princípio a disposição final dos RSU em diferentes países. Diante dos resultados obtidos verifica-se o crescimento acelerado das pesquisas que tratam dos impactos ambientais associados a disposição de resíduos, sendo evidenciados em maior proporção as áreas afetadas em detrimento dos impactos provocados aos seres vivos.
Efeitos do incêndio florestal sobre a vegetação na Floresta Nacional do Tapajós
Authors: Santos Milla Graziely Silveira dos , Melo Lia de Oliveira , Costa Maria Soliane Sousa
Published: September 2019

As florestas públicas de uso sustentável permitem o manejo florestal, por meio de técnicas que visam causar o menor dano à vegetação remanescente e ao solo, porém, ainda assim ocorrem aberturas de clareiras de diferentes tamanhos que aumentam a incidência da radiação solar, secando mais rapidamente os resíduos da colheita, tornando a floresta mais suscetíveis aos incêndios. O objetivo deste trabalho foi analisar, por meio do monitoramento de 20 parcelas permanentes, a estrutura do estrato arbóreo e da regeneração natural, composta por arvoretas, varas e mudas, antes e após a ocorrência de incêndio florestal em área manejada na Floresta Nacional do Tapajós. Pode-se verificar que mais de 80% dos indivíduos tiveram contato com o fogo, e que destes 28% morreram em decorrência das chamas. O maior risco de incêndio encontra-se no município de Belterra. Na composição florística foi verificado o ingresso das famílias Caryocaraceae, Polygonaceae e Solanaceae somente após a ocorrência do incêndio. A floresta após o incêndio, manteve-se com a diversidade compatível com a de florestas tropicais, mesmo com o número de clareiras tendo aumentado significativamente. Pôde-se constatar que o diâmetro é um fator de grande relevância para sobrevivência dos indivíduos. Na dinâmica florestal, as árvores, arvoretas e varas tiveram a taxa de mortalidade superior a taxa de recrutamento, sendo que as espécies que mais morreram foram as consideradas de madeira leve e as espécies resinosas.
Desempenho do amendoim forrageiro para revegetar argissolos degradados no norte fluminense
Authors: Fortunato Ershiley Pereira David
Published: September 2019

A degradação do solo é ocasionada por impactos negativos, que ocorrem no meio ambiente. Suas principais causas são originadas por ações antrópicas, como a agricultura mal conduzida, ocasionando, por exemplo, a erosão. Uma das soluções para reduzir a degradação e seus malefícios é a revegetação, pois a mesma pode promover a recuperação do solo, reabilitando suas funções ecológicas, como a ciclagem de nutrientes. Entre as espécies utilizadas para a revegetação, as leguminosas se destacam, pois são capazes de promover a fixação biológica do nitrogênio, dentre essas, o amendoim forrageiro (Arachis pintoi). O trabalho teve como objetivo analisar o desempenho do amendoim forrageiro para revegetar o subsolo de um ARGISSOLO no norte fluminense, utilizando composto orgânico, adubação química convencional e controle. No experimento, utilizou-se o solo do horizonte B em vasos de 3L. No tratamento composto orgânico, utilizou-se 50g/L, e na adubação convencional, 6,6g/L de superfosfato, e 0,6g/L de cloreto de potássio, e após 90 dias, características do solo e das plantas foram analisadas. Utilizou-se o delineamento inteiramente casualizado. Os resultados para os parâmetros comprimento da haste, número de brotações e estimativa de matéria seca não apresentaram diferenças. Dados de produção de biomassa para o controle, composto orgânico e adubação química foram 9,33g/planta; 9,17g/planta; 8,2g/planta, respectivamente. Os teores e conteúdos de nutrientes proporcionaram maiores valores com a adição de composto orgânico. Os resultados encontrados sugerem que o amendoim forrageiro apresente potencial para revegetar solos degradados. Em relação aos fertilizantes utilizados como tratamento no período de 90 dias, os resultados foram similares para as características vegetativas, mas houve aumento no conteúdo de nutrientes, o que pode significar que ao longo do tempo a ausência de adubação poderia comprometer o processo de crescimento das plantas, diminuindo a eficiência da revegetação quando utilizadas para recuperar áreas degradadas.
EFFECTS OF FILLERS ON PROPERTIES OF ONE-PART POLYURETHANE SEALANTS WITH PRESENCE OF A LATENT CURING AGENT
Authors: Timakova Kseniya A. , Panov Yury T.
Published: September 2019

In this study, the effects of fillers on the technological properties of polyurethane sealants and the physical and mechanical properties of air moisture curing sealants are investigated. The sequence of loading the components in the dissolver, factoring in the presence of a latent curing agent, is demonstrated. It was found that when filling within 20-80 parts weight per 100 parts weight of the pre-polymer, the general complex of physical and mechanical properties remains high. With the introduction of mineral dispersed filler, the tear strength increases, but the relative elongation at break decreases. The increase in the tensile strength occurs up to a certain limit, after which there is a decrease in the strength of the sealant. It was shown that based on the oil absorption value of the fillers, the type and the amount of a filler for the sealant can be evaluated, as oil absorption directly depends on the particle size, surface area and particle shape of the filler. It was observed that for maintaining high physical and mechanical properties of the composite and the optimum viscosity of the sealant, it is preferable to combine two kinds of fillers with different oil absorption. It was established that the application of fillers with high and low oil absorption has a positive effect on the technological and performance properties of sealants. The filler with high oil absorption contributes to the thixotropy of the sealant, while the filler with low oil absorption allows to form a more highly filled composite while preserving the high strength characteristics.
INVESTIGATION OF STRUCTURAL, MICROSTRUCTURAL AND ELECTROCHEMICAL CHARACTERISTICS OF Pt/SnOx-C ELECTROCATALYSTS PREPARED VIA ELECTROCHEMICAL DISPERSION OF TIN AND PLATINUM
Authors: Kuriganova Alexandra B. , Smirnova Nina V. , Leontyev Igor N. , Avramenko Marina V.
Published: September 2019

Tin oxides powders (SnOx) with different structure and composition and Pt/SnOx-C electrocatalysts for the direct ethanol fuel cells have been prepared via the electrochemical dispersion of tin and platinum electrodes under a pulse alternating current using various types of anion electrolytes (Cl- and F- anions). As-prepared tin oxides powders, SnOx-C composite supports and Pt/SnOx-C catalysts have been examined by different methods: X-ray diffraction, Raman spectroscopy, scanning electron microscopy and transmission electron microscopy. SnO2 nanoparticles with average sizes of 5 – 8 nm was prepared in a Cl- – containing solution. In turn, the F- – containing solution was found to contain SnO nanoparticles with pronounced shape anisotropy and diverse size of particles. These tin oxides were used as precursors in the synthesis of Pt/SnOx-C catalysts (20% Pt loading, D111=10.5 – 13.5 nm) by the same pulse alternating current technique. Electrochemical active surface area of the Pt/SnOx-C electrocatalysts determined via CO-stripping method was 13-15 m2g-1. Electrocatalytic activity of the electrocatalysts was study for the ethanol electrochemcail oxidation reaction by cyclic voltammetry, rotating disc electrode technique. It was found that the presence of tin oxides is found to exert the same promoting effect on the CO-stripping and ethanol electrochemical oxidation reaction independently on structural features of their particles.
Density decompositions of networks
Authors: Borradaile Glencora , Migler Theresa , Wilfong Gordon
Published: September 2019

We introduce a new topological descriptor of a graph called the
density decomposition which is a partition of the vertices of a graph
into regions of uniform density. The decomposition we define is
unique in the sense that a given graph has exactly one density
decomposition. The number of vertices in each partition defines a
density distribution which we find is measurably similar to the
degree distribution of given real-world networks (social, internet,
etc.) and measurably dissimilar in synthetic networks (preferential
attachment, small world, etc.).

We also show how to build networks having given density distributions, which gives us further insight into the structure of real-world networks.
La complexification des systèmes budgétaires comme signe d’universalisme des systèmes de contrôle ? Le cas des PME tunisiennes
Authors: Ben Hamadi Zouhour , Chapellier Philippe , Dupuy Yves
Published: September 2019

L’objectif de cet article est de déterminer dans quelle mesure les caractéristiques des systèmes budgétaires sont liées à des contingences spécifiées, ou à l’opposé, à des habitudes managériales universelles plus ou moins directement héritées ou imitées. Un contexte d’étude spécifique est choisi, celui des PME tunisiennes. L’analyse typologique effectuée sur un échantillon de 116 dirigeants de ces PME permet d’identifier, dans le contexte considéré, quatre types de systèmes budgétaires. L’analyse multivariée montre que des dirigeants aux profils différents et qui évoluent dans des environnements différents, disposent et utilisent des systèmes budgétaires différents mais ce travail montre en même temps, et de façon semble-t-il, paradoxale, l’existence d’habitudes managériales d’apparence universaliste. Ces dernières peuvent ainsi être analysées comme le fruit de pratiques isomorphes liées à la formation des dirigeants, laquelle pousserait à l’adoption de démarches analogues telles qu’enseignées dans les universités ou les écoles de commerce.
Défis et possibilités pour les piétons âgés en région
Authors: Thouin Aimée , Cloutier Marie-Soleil
Published: September 2019

Marcher en milieu urbain lorsqu’on est âgé n’est pas toujours simple ni sécuritaire. Bien que ce sujet ait fait l’objet de nombreux travaux récemment, peu ont été menés dans les villes situées en régions éloignées. Cet article répond à cette lacune en examinant l’influence de l’environnement bâti sur les espaces d’action piétonniers d’aînés habitant à Rouyn-Noranda. Deux collectes de données complémentaires ont été réalisées : des entretiens et une évaluation de la marchabilité (par une grille d’audit adaptée aux besoins des aînés) ont permis de cartographier et de connaître l’environnement de marche d’un groupe de piétons âgés vivant à Rouyn. Les résultats démontrent que les piétons âgés souhaitent surtout marcher dans des lieux agréables, sans nécessairement tenir compte de la sécurité routière, qui obtient bien souvent de faibles notes à ces mêmes endroits. Devant le défi que représente le vieillissement de la population, une meilleure connaissance des besoins des piétons âgés s’impose, peu importe la taille de la ville, et nos résultats apportent d’intéressantes pistes de réflexion à cet égard.
Espaces de cotravail, mobilité et insertion en milieu urbain à Montréal
Authors: Ananian Priscilla , Paulhiac Scherrer Florence , Lachapelle Ugo , Parent-Frenette Guillaume
Published: September 2019

La croissance récente du nombre d’espaces de cotravail (coworking) à Montréal pose la question de la contribution de ces espaces au processus de régénération des quartiers de la ville et, plus largement, au développement urbain durable. Cet article porte sur l’insertion des espaces de cotravail dans les quartiers montréalais en matière de cadre de vie, de mobilité et de développement économique. Notre analyse est basée sur une démarche cartographique et documentaire, sur des observations de terrain et sur l’animation d’un groupe de discussion qui a mobilisé gestionnaires d’espaces de cotravail et fonctionnaires municipaux. Les résultats montrent que le dynamisme commercial, la présence d’un écosystème d’entreprises et l’image projetée par les quartiers d’implantation sont tout aussi déterminants que des facteurs classiques de localisation des lieux de travail comme l’accessibilité et les prix de location des logements commerciaux.
L’incidence des plans de développement de la zone agricole (PDZA) sur la sociabilité et les représentations agricoles
Authors: Desrosiers-Côté Maude , Doyon Mélanie
Published: September 2019

Depuis la Deuxième Guerre mondiale, on assiste à la mise en place d’un modèle agricole industriel entraînant une déterritorialisation de l’agriculture. Au fil du temps, divers problèmes associés à ce modèle sont constatés et, en 2012, le gouvernement québécois adopte le Plan de développement de la zone agricole (PDZA) afin de pallier ces limites. Dans cet article, nous étudions le processus de reterritorialisation de l’agriculture à travers l’élaboration du PDZA de deux municipalités régionales de comté (MRC) du Québec, soit la MRC d’Antoine-Labelle et la MRC des Sources. La recherche montre que ce processus repose, d’une part, sur le développement d’une sociabilité entre les divers acteurs ayant participé à la démarche. Celle-ci s’exprime par l’établissement ou le rétablissement du dialogue entre les milieux agricole et non agricole. D’autre part, le processus se réalise au moyen d’un changement dans les représentations de l’agriculture qu’ont des acteurs non agricoles disposant de compétences stratégiques, mais également certains producteurs agricoles.
INTERVENCIÓN SOCIOCOMUNITARIA CON ADOLESCENTES EN CONFLICTO CON LA LEY
Authors: Esteve Oliver Judith , Botija Mercedes
Published: September 2019

Resumen. El proyecto de intervención sociocomunitaria “¿TEATREVES?” ha sido dirigido al colectivo de adolescentes en conflicto con la ley que se encuentran bajo una medida judicial en medio abierto en el ámbito comunitario. El proyecto se vincula desde los Trabajos Fin de Grado (TFG) y las prácticas de cuarto curso del alumnado del Grado de Trabajo Social de la Universidad de Valencia, atendiendo a las demandas específicas de instituciones comunitarias con el fin de establecer sinergias entre el territorio próximo y la academia. Evaluados los resultados podemos afirmar que un proyecto de esta índole tiene efectos positivos en el proceso del/la menor, así como el aumento de destrezas que implementa en el ámbito comunitario.
 
Palabras clave: Adolescentes, Conflicto, Ley, Resolución, Conflictos, Teatro del Oprimido.
LA GANADERÍA EXTENSIVA EN EL DESARROLLO TERRITORIAL VALENCIANO. RECONOCIMIENTO PÚBLICO Y EXPERIENCIAS SOCIALES
Authors: Amat-Montesinos Xavier , Martínez Puche Antonio , Larrosa Rocamora José Antonio
Published: September 2019

Resumen. El pastoreo es un modelo de producción ganadera, así como una forma de vida con importantes implicaciones sobre los territorios rurales a escala global. Sin embargo, el declive de los sistemas de explotación tradicionales y su conversión en formatos intensivos e industrializados ha abierto el debate sobre la sostenibilidad del sector ganadero. Por este motivo, las políticas públicas se han visto obligadas a elaborar estrategias y normativas que reconozcan los servicios prestados por el pastoreo extensivo, con medidas que apuestan por su protección y recuperación. En el presente texto se analiza el reconocimiento público del pastoreo en la Comunitat Valenciana, región administrativa que durante más de tres décadas ha reivindicado, en apariencia, la importancia de la ganadería extensiva en su acción política. Sin embargo, ante las limitaciones institucionales y burocráticas, en los últimos años emergen iniciativas que promueven enfoques nuevos y desconocidos en torno a la actividad pastoril, recuperando el anclaje territorial de los sistemas extensivos y tradicionales.
 
Palabras clave: Ganado, Tierra de pastoreo, Política pública, Medio rural, Comunitat Valenciana.
 
Abstract. Pastoralism is a model of livestock production and a way of life, with important implications for the rural environment on a global scale. However, the decline of traditional exploitation systems, their intensification and industrialization, has opened the debate on the sustainability of the livestock farming. For this reason, public policies have been obliged to develop strategies and regulations to recognize the services provided by pastoralism, with measures that opt for their protection and recovery. This paper analyzes the public recognition of pastoralism in the Valencian Community, an administrative region that, for more than three decades, has claimed the importance of extensive farming livestock in its political action. However, in the face of institutional and bureaucratic limitations, social initiatives have emerged in recent years that promote new and unknown approaches to pastoralism, recovering the territorial anchoring of extensive and traditional systems.
 
Key words: Livestock, Grazing land, Public policy, Rural environment, Valencian Autonomous Community.
Bovine tuberculosis breakdown duration in cattle herds: an investigation of herd, host, pathogen and wildlife risk factors
Authors: Milne Georgina , Allen Adrian , Graham Jordon , Lahuerta-Marin Angela , McCormick Carl , Presho Eleanor , Reid Neil , Skuce Robin , Byrne Andrew W
Published: September 2019

Background. Despite rigorous controls placed on herds which disclose antemortem test positive cattle to bovine tuberculosis, caused by the infection of Mycobacterium bovis, many herds in Northern Ireland (NI) experience prolonged breakdowns. These herds represent a considerable administrative and financial burden to the State and farming community.

Methods. A retrospective observational study was conducted to better understand the factors associated with breakdown duration, which was modelled using both negative binomial and ordinal regression approaches. Six explanatory variables were important predictors of breakdown length in both models; herd size, the number of reactors testing positive in the initial SICCT test, the presence of a lesioned animal at routine slaughter (LRS), the count of M. bovis genotypes during the breakdown (MLVA richness), the local herd-level bTB prevalence, and the presence of herds linked via management factors (associated herds).

Results. We report that between 2008 and 2014, mean breakdown duration in NI was 226 days (approx. seven months; median; 188 days). In the same period, however, more than 6% of herds in the region remained under movement restriction for more than 420 days (13 months); almost twice as long as the mean. The MLVA richness variable was a particularly important predictor of breakdown duration. We contend that this variable primarily represents a proxy for beef fattening herds, which can operate by purchasing cattle and selling animals straight to slaughter, despite prolonged trading restrictions. For other herd types, the model supports the hypothesis that prolonged breakdowns are a function of both residual infection within the herd, and infection from the environment (e.g. infected wildlife, contiguous herds and/or a contaminated environment). The impact of badger density on breakdown duration was assessed by including data on main sett (burrow) density. Whilst a positive association was observed in the univariate analysis, confounding with other variables means that the contribution of badgers to prolonged breakdowns was not clear from our study. We do not fully reject the hypothesis that badgers are implicated in prolonging bTB breakdowns via spillback infection, but given our results, we posit that increased disease risk from badgers is unlikely to simply be a function of increasing badger density measured using sett metrics.
Calcium-driven regulation of voltage-sensing domains in BK channels
Authors: Lorenzo-Ceballos Yenisleidy , Carrasquel-Ursulaez Willy , Castillo Karen , Alvarez Osvaldo , Latorre Ramon
Published: September 2019

Allosteric interactions between the voltage-sensing domain (VSD), the Ca2+-binding sites, and the pore domain govern the mammalian Ca2+- and voltage-activated K+ (BK) channel opening. However, the functional relevance of the crosstalk between the Ca2+- and voltage-sensing mechanisms on BK channel gating is still debated. We examined the energetic interaction between Ca2+ binding and VSD activation by investigating the effects of internal Ca2+ on BK channel gating currents. Our results indicate that Ca2+ sensor occupancy has a strong impact on VSD activation through a coordinated interaction mechanism in which Ca2+ binding to a single α-subunit affects all VSDs equally. Moreover, the two distinct high-affinity Ca2+-binding sites contained in the C-terminus domains, RCK1 and RCK2, contribute equally to decrease the free energy necessary to activate the VSD. We conclude that voltage-dependent gating and pore opening in BK channels is modulated to a great extent by the interaction between Ca2+ sensors and VSDs.
Entomopathogenic nematodes increase predation success by inducing cadaver volatiles that attract healthy herbivores
Authors: Zhang Xi , Machado Ricardo AR , Doan Cong Van , Arce Carla CM , Hu Lingfei , Robert Christelle AM
Published: September 2019

Herbivore natural enemies protect plants by regulating herbivore populations. Whether they can alter the behavior of their prey to increase predation success is unknown. We investigate if and how infection by the entomopathogenic nematode Heterorhabditis bacteriophora changes the behavior of healthy larvae of the western corn rootworm (Diabrotica virgifera), a major pest of maize. We found that nematode-infected rootworm cadavers are attractive to rootworm larvae, and that this behavior increases nematode reproductive success. Nematode-infected rootworms release distinct volatile bouquets, including the unusual volatile butylated hydroxytoluene (BHT). BHT alone attracts rootworms, and increases nematode reproductive success. A screen of different nematode and herbivore species shows that attraction of healthy hosts to nematode-infected cadavers is widespread and likely involves species-specific volatile cues. This study reveals a new facet of the biology of herbivore natural enemies that boosts their predation success by increasing the probability of host encounters.
It's online, it's news: appropriation of viral narratives by the digital press
Authors: Martins Ana , Novoa Fernández Olivia , Aguaded Ignacio , Tavares Mirian
Published: September 2019

At the border between information and entertainment, memes and newsgames aresome of the news formats that, made viral in social networks, complement the informational experience and compete with the traditional news media in constructing alternative readings of the real. If in the light of Bakhtine (apud Ponte, 2004) journalism can be understood as a secondary discursive genre that feeds on primary genres, how to understand the circulation of these discourses produced from journalistic events in social networks? On the other hand, how are these narratives appropriated by the media? What functions do they play in media discourse? In this article we present some examples of products created from events of political impact for than register, by the analysis of a set of news stories, how the digital press, in the Iberian context, make use of them. The purpose of this article is to contribute to the reflection on how the information media relate to these new narratives.
Characteristic Mode Analysis of Unit Cells of Metal-Only Infinite Arrays
Authors: Haykir Y. , Civi O. A.
Published: September 2019

Characteristic mode analysis of metal only unit cells of periodic structures is performed using Method of Moments based formulation. Ewald’s transformation is incorporated for a fast and cost efficient solution and the advantages over spatial Green’s function are discussed. The influence of the unit cell size on the characteristic modes is demonstrated. Various metal-only reflectarray elements are compared and their radiation characteristics are interpreted using the theory of characteristic modes. It is shown that characteristic modes of the unit cell can help us to understand the radiation and scattering behavior of the unit cell and this physical insight can be used in periodic array unit cell design.