bluuebunny/crossref_metadata_2025 huggingface dataset:
Procesos creativos y su afectación tras la COVID-19. Ventana Abierta (2020), trabajar con cuerpos físicos a distancia
Authors: Garzón Albarrán Manuel
Published: July 2021

Ventana Abierta (2020) es una videocreación con vocabulario de danza realizada durante los primeros meses de pandemia, cuyo producto final se genera tras un proceso creativo ejecutado “a distancia” entre España y Paraguay. El método autoetnográfico permite aflorar los procedimientos de investigación, en este caso performativa, ensamblando teoría y experiencia. A través de la autoetnografía intentaré mostrar las adversidades vividas en el proceso creativo de dicha obra, para indagar sobre la afectación de la coyuntura sanitaria de la COVID-19 en los procesos creativos, así como, plantear posibles adaptaciones que debe de poseer la nueva creación de danza “a distancia”; considerando que tratamos con una corriente artística que utiliza el cuerpo del intérprete como lenguaje y se hace necesaria la presencia del mismo para articular el discurso de su obra. Un trabajo entre cuerpos, que de momento, no pueden tocarse.
COVID-19, arte y cultura: crear, construir y generar nuevas realidades desde el artista
Authors: Colomer Sánchez Ana
Published: July 2021

Ante la situación vivida por la actual pandemia producida por la COVID-19, la cultura vive un periodo de adaptación en la forma de crear, transmitir y compartir que ha repercutido en nuevos hábitos de consumo y enseñanza en lo social y humano. Esto ha surgido gracias a la constancia de los artistas que persisten y buscan nuevas fórmulas ante el problema existente. Así, en el presente debate, se refleja la visión en primera persona de situaciones reales surgidas en la cultura y el arte; todo ello se nutre además con las entrevistas de dos personalidades relevantes, la Directora de Cultura y Patrimonio de la Generalitat Valenciana y escritora Carmen Amoraga y el Catedrático de pintura José María Albareda, que refuerzan el relato. De esto se desprende que la creatividad ha otorgado nuevos escenarios a las artes y la cultura, donde la enseñanza y la difusión han predominado de manera telemática perdurando como alternativa junto otros recursos. En conclusión, la cultura ha sido uno de los puntos de unión y cohesión social, que nos ha acercado a los demás y debe reconocerse como parte productiva de nuestra economía.
Educación y cultura en tiempos de pandemia. La propuesta metodológica del programa para la Innovación Educativa “Vivir y sentir el patrimonio”
Authors: Suárez Muñoz Rosa
Published: July 2021

Con la finalidad de impulsar el conocimiento y disfrute de la cultura y el patrimonio en los centros docentes andaluces, la Consejería de Educación de la Junta de Andalucía creó el programa para la innovación educativa “Vivir y sentir el patrimonio”. De esta forma se pretendía acercar al alumnado a los valores históricos, artísticos y etnográficos de su entorno presentando al patrimonio como una herramienta necesaria para propiciar el acceso a la cultura como un derecho fundamental. Sin embargo, debido al confinamiento domiciliario provocado por la pandemia de COVID-19, muchos de los proyectos que integraban este programa se vieron truncados haciendo necesario un acompañamiento desde la propia Consejería para idear alternativas creativas a la nueva situación que permitieran continuar acercando la cultura y el patrimonio al alumnado, a pesar de no asistir presencialmente a los Centros Educativos.

En el presente artículo se esbozan las líneas metodológicas que se siguieron para hacer frente a una situación inédita hasta el momento en el ámbito educativo y se describen algunas experiencias significativas. Se ha empleado una metodología cualitativa, se ha realizado una revisión bibliográfica y se han recopilado datos fruto de la propia experiencia como responsable provincial del Programa.

Como conclusión principal se establece que las diferentes soluciones que se barajaron, así como la propia adaptación del Programa para el siguiente curso escolar, determinaron un cambio de paradigma que obligaría a contemplar nuevos horizontes en estas relaciones, en las que la transformación digital tendría un papel preponderante.
Manejo adecuado y responsable de los recursos financieros para la sostenibilidad de las empresas
Authors: Vera Loor Rosa Yessenia , Álava Rosado Derli Francisco
Published: July 2021

Toda organización requiere ser más competitiva y eficiente económica y financieramente y para ello, es necesaria la implementación de medidas que permitan alcanzar este fin, de modo que puedan volverse más productivas y obtener resultados a menor costo haciendo mejor uso de sus recursos. En la actualidad, debido a la globalización y al uso tecnológico, se requiere de empresas más competitivas, productivas y rentables a fin de alcanzar la sostenibilidad financiera en beneficio propio, pero también del entorno o de la comunidad en la que opera y esto solo puede lograrse mediante un manejo adecuado y responsable de dichos recursos. El objetivo general de esta investigación se basa en analizar el manejo adecuado y responsable de los recursos financieros para la sostenibilidad de las empresas. El cuidado de las acciones empleadas por la administración empresarial es imprescindible para proporcionar la información financiera útil y confiable que permita reunir la información necesaria para el resultado de sus operaciones externas y transformaciones internas, por tanto, las decisiones que tomen alrededor de esta serán objetivas. También es importante considerar la evaluación constante de las acciones que significan gastos de recursos, a fin de mejorar y gestionarlos mejor, para así maximizar la eficiencia y con ello, la rentabilidad derivada de los procesos internos de cualquier organización.
Critical Analysis of Scalability of Reconfigurable Manufacturing Systems
Authors: Jiping Zhu
Published: July 2021

Due to the rapidly increasing industrial competition in the globe, it has now become fundamental of engineering firms to implement fundamental industrial approaches, which promptly and reliably focusses on sudden transformation of the design of engineered products. Emergent strategies, which might allow forms to cope up with the quickly transforming changes of product specification is centered on Reconfigurable Manufacturing Systems (RMSs). This research contribution discusses the significance of the presently available scalable Manufacturing Systems (MSs) that allows engineering firms to meet the demands of the market quickly. RMSs have to be designed on the outset of the futuristic scalability to allow its cost-effective and prompt expansion according to the demands of the globe. As such, this research contribution provides the principles to given manufacturing systems’ design to enhance scalability.
Biography and storytelling: A identidade e a subjetividade na aula de inglês no IFA/FIVU
Authors: Silva Letícia Pilger da , Thibes Dalfovo Valentina
Published: July 2021

O objetivo deste artigo é analisar a construção da identidade e a implicação de subjetividade em duas Unidades Temáticas (UTs) criadas e aplicadas nas aulas de língua inglesa, dos níveis 2 e 4, no projeto IFA/FIVU, sobre biografias e contação de histórias. Para isso, primeiramente, apresentaremos a concepção e o percurso da criação dos dois materiais didáticos; em seguida, delimitaremos o embasamento teórico sobre subjetividade e importância da alteridade para a constituição da identidade. Por fim, analisaremos atividades das duas UTs, observando o continuum de subjetividades na sua aproximação, que auxiliou o processo de aprendizagem: os “outros famosos”, quando aparecem textos sobre vidas de celebridades dentro do material; os “outros desconhecidos”, a partir da biografia e das narrativas de participantes da página Humans of New York, e, finalmente, os “outros dos outros”, ou seja, o “eu”, pela construção autobiográfica dos próprios alunos na língua inglesa.
The Relationship between Smartphone Addiction and Academic Performance in College Students
Authors: Damiao John , Cavaliere Catherine
Published: July 2021

OBJECTIVES: Smartphone addiction is a growing concern that can impact social, psychological, and health, while contributing to functional impairments. This study aimed to determine the relationship between smartphone addiction and the grade point average (GPA) of undergraduate college students in the U.S.

METHODS: This descriptive study consisted of 53 undergraduate college students. The Smartphone Addiction Scale (SAS) and overall grade point average (GPA) was gathered via survey. The data was analyzed through Pearson’s correlation to demonstrate the association between these variables.

FINDINGS: While not statistically significant at the α = .05 level, the results suggest an almost statistically significant negative correlation (r = -0.210, p = .066) indicating a weak but noteworthy association between smartphone addiction and GPA.

CONCLUSION: Smartphone addiction is a growing concern that has shown to impact quality of life in Asian countries. These results suggest further research with larger samples in the U.S. is needed to inform college students of the risks smartphone addiction can have on academic success.
The effectiveness of massage for treating acne lesions: a case study
Authors: Suwiczak Szymon , Wilk Iwona , Kassolik Krzysztof
Published: July 2021

Background: Acne vulgaris is a chronic disease affecting almost 100% of the population. The treatment of this condition is not limited to the disease itself, but also involves eliminating the resultant scars. The most common treatments for acne and the associated scars are pharmacotherapy, cosmetic and physical therapy, and aesthetic medicine therapies. An alternative method for treating this condition may be massage, which, as a mechanical stimulus, may be effective at increasing scar mobility and reducing the pain experienced during movement.

Aim of the study: The aim of this case study was to examine the effectiveness of massage for treating the scars resulting from keloid acne.

Material and methods: Massage treatments were performed on a young man (32 years old) who, as a result of acne, had scars on the chest and back areas. Massage was performed twice a week for 3 weeks (6 treatments), and each session lasted 40 minutes. Before the therapy, the VAS scale was used to assess the perceived pain, and palpation was used to assess the consistency (hardness) of the post-acne lesions. Skin displacement was measured with the use of an innovative device allowing for determination of the angle of displacement of the superficial skin layer within the scar. A questionnaire was also used to assess well-being and quality of life. The measurements were repeated after each session and immediately after the end of the massage cycle.

Results: After a series of massages, the experienced pain, as assessed by the VAS scale, was reduced from level 5 before therapy to level 1 after therapy. Skin mobility was also increased by the massage treatments, and the patient’s well-being and quality of life improved after each session.

Conclusions: The presented case shows that massage can be used in the treatment of post-acne lesions. This therapy can support the conventional treatment process by contributing to a reduction in pain, increasing the limited mobility and displacement of the scarred skin, and improving overall well-being and quality of life.
Food allergies among children as a social and medical problem
Authors: Zyska Aleksandra , Pawlak Adam , Szerszeń Małgorzata , Soszyński Dariusz
Published: July 2021

Background: In recent years, food allergy has been diagnosed more frequently in children and adolescents. The environment is more toxic and chemical substances that are additives to food dominate the diet. Also, a changing lifestyle, exposure to stress, and a poorly balanced diet may have an impact on the occurrence of allergies. In society, more children suffer from food allergies than adults, and food allergies are becoming an increasingly serious social and medical problem.
Aim of the study: The aim of this study is to review the subject of food allergies in children, with a focus on the social and medical problems associated with this condition.
Material and methods: 31 studies, published in the last 10 years, were found in databases such as the Polish Medical Bibliography, PubMed Medline, and Google Scholar, using the following keywords: “food allergy”, “risk factors”, “diet”, “psychology”, “social aspects”.
Conclusions: Given the potentially serious medical and social consequences resulting from allergic diseases, the increasing incidence of allergies among children and young people should motivate medical personnel and educators to receive additional training and to conduct further research in this area.
Liens entre les besoins non satisfaits, la qualité de vie et les caractéristiques des survivantes de cancers gynécologiques en Indonésie
Authors: Afiyanti Yati , Besral Besral , Haryani Haryani , Milanti Ariesta , Nasution Lina Anisa , Wahidi Kemala Rita , Gayatri Dewi
Published: July 2021

Les survivantes de cancers gynécologiques ont des besoins complexes très souvent négligés. La présente étude indonésienne vise à établir les liens entre les besoins non satisfaits, la qualité de vie et certaines caractéristiques particulières de ces survivantes. Au total, 298 participantes ont rempli le questionnaire sur les besoins non satisfaits des survivants au cancer (Cancer Survivor Unmet Needs ou CaSUN), le questionnaire sur la qualité de vie EORTC QLQ-C30 ainsi que les questionnaires démographiques et cliniques. L’étude, réalisée suivant un devis corrélationnel transversal, a établi un lien entre les besoins non satisfaits et la dégradation de la qualité de vie perçue. Plusieurs facteurs sont associés à l’augmentation des besoins insatisfaits : patients jeunes, revenu moindre, niveau d’éducation moyen, diagnostic récent, stade avancé de la maladie, et polythérapie (p < .05). Chez les survivantes indonésiennes d’un cancer gynécologique, le soutien financier (70,5 %) constitue le besoin le plus souvent insatisfait. À la fin des traitements primaires, elles ont besoin de soins globaux et continus pour gérer les problèmes, nouveaux comme anciens, causés par le cancer et le traitement.
Otimização de Desempenho em Código Interpretador de Programação Genética
Authors: Oliveira Lucas Bicalho , Fazenda Álvaro Luiz , de Melo Vinícius Veloso
Published: July 2021

A Programação Genética é uma técnica de algoritmo evolutivo que frequentemente apresenta muitas instruções e etapas que podem ser executadas concorrentemente. Assim, técnicas de programação paralela e de alto desempenho podem ser empregadas para otimização do desempenho computacional do algoritmo desenvolvido. Este artigo demonstra a melhoria de desempenho obtida para um código interpretador de algoritmos de Programação Genética, através do uso de programação aderente aos padrões OpenMP e OpenACC. Como resultado, foi possível observar que as execuções em GPU mostraram significativa melhoria de desempenho quando utilizadas com entradas consideradas grandes para o problema. Cabe destacar ainda que a versão desenvolvida em OpenACC permite a portabilidade do código entre diferentes plataformas, permitindo execução eficiente da forma multithread em CPU, tanto quanto em GPU, representando uma opção com portabilidade efetiva.
Minicloud: uma nuvem gratuita baseada em Power
Authors: dos Santos Júnior Cláudio , Wanner Lucas , Rigo Sandro
Published: July 2021

Minicloud é um serviço de nuvem gratuito gerenciado por alunos baseada na arquitetura de processadores POWER da IBM. O serviço é usado por uma variedade de usuários em todo o mundo para fins que vão desde a construção, porte e testes de sistemas e software para Power, até a avaliação de desempenho e estudos acadêmicos. A infraestrutura da Minicloud é baseada no OpenStack, gerenciada e mantida pelo nosso time de estudantes de graduação. Este artigo apresenta uma visão geral da Minicloud, sua configuração, serviços disponíveis, perfis de usuriáo e casos de uso.
Comparação dos modelos BERT e Snips para compreensão de linguagem natural para assistente virtual ADA
Authors: Santos Leonardo Costa , de Carvalho Junior Antonio Deusany , Goldman Alfredo
Published: July 2021

Compreensão de linguagem natural, é uma subárea importante de Processamento de Linguagem Natural em Inteligência Artificial, que busca entender e extrair informação semântica de um texto ou fala. Ela é um componente essencial de qualquer assistente virtual moderna, sendo responsável por identificar a intenção do usuário e os objetos de sua fala. Sendo assim, este trabalho apresenta uma comparação de dois modelos, sendo estes o BERT e Snips, para compreensão de linguagem natural. Tais modelos foram testados com o intuito de serem integrados à assistente virtual A.D.A., realizando as tarefas de classificação de intenção e slot filling. Como resultados preliminares, conseguimos obter alta precisão em ambas as tarefas com as soluções testadas. Assim, podemos concluir que as duas soluções são adequadas para integração com a A.D.A. dependendo do contexto.
Aprendizado de Máquina Quântica com Rede Neural Artiﬁcial Aplicado ao Problema de Coloração de Grafos
Authors: Béo Flávia Janine R. , Vittori Karla
Published: July 2021

O problema de coloração de grafos consiste em atribuir cores a certos elementos de um grafo, sujeito a determinadas condições. Ao se caracterizar como um problema de otimização combinatória, ele possui aplicabilidade a uma vasta gama de áreas que envolvem particionamento e conflitos, compreendendo escalonamentos e alocações diversas, como, por exemplo, de tarefas, canais, redes, eventos e rotas. O problema considerado, constituído por um grafo com 4 vértices, demonstrou o potencial do aprendizado de máquina quântica com redes neurais artificiais proposto na resolução de um problema de otimização combinatória, o qual obteve resultados superiores em relação àqueles apresentados pela rede neural artificial utilizada, implementada em um computador clássico, com relação ao tempo de processamento e à acurácia da rede neural clássica.
Seasonal Dynamics on Spider Population in Pathiramanal Island, Kerala, India: A Case Study
Authors: J. Malamel Jobi
Published: July 2021

Impact of temperature, rainfall, and humidity varied across different seasons, and the spiders responded differently in each season. Spider community reaches its peak in growing season (October to January). The growing season is recorded as the period with average temperature, rainfall, and relative humidity and which is found to be more suitable for spider population to increase, because highest proportion of spiders is trapped during this season. Ecological factors diminished the spider fauna from February to May (dry season) with high temperature and then gradually decreased through June to September (rainy season) because of heavy rainfall. Correlation analysis of variables with species richness and number of individuals is tested to check the statistical significance between them. Season-wise dendrogram is plotted to show the similarity between the seasons. For the estimation of spider diversity in three different seasons, indices such as Fisher alpha diversity index, Shannon diversity index and Simpson’s diversity index are evaluated.
Volatilomics of Natural Products: Whispers from Nature
Authors: Carazzone Chiara , P.G. Rodríguez Julie , Gonzalez Mabel , López Gerson-Dirceu
Published: July 2021

Volatilomics studies the emission of volatile compounds from living organisms like plants, flowers, animals, fruits, and microorganisms, using metabolomics tools to characterize the analytes. This is a complex process that involves several steps like sample preparation, extraction, instrumental analysis, and data processing. In this chapter, we provide balanced coverage of the different theoretical and practical aspects of the study of the volatilome. Static and dynamic headspace techniques for volatile capture will be discussed. Then, the main techniques for volatilome profiling, separation, and detection will be addressed, emphasizing gas chromatographic separation, mass spectrometry detection, and non-separative techniques using mass spectrometry. Finally, the whole volatilome data pre-processing and multivariate statistics for data interpretation will be introduced. We hope that this chapter can provide the reader with an overview of the research process in the study of volatile organic compounds (VOCs) and serve as a guide in the development of future volatilomics studies.
Helminth Induced Immunomodulation against Metainflammation and Insulin Resistance
Authors: Aravindhan Vivekanandhan , Joy Manohar Sibi
Published: July 2021

Filariasis mediated immunomodulation against metabolic diseases is a recently identified novel phenomenon. There seems to be an inverse relationship between filarial infections and type-2 diabetes. Rapid elimination of filarial diseases, due to mass drug administration has somehow fueled the sudden and rampant increase in type-2 diabetes, at least in certain tropical countries, like India and Indonesia. Filarial infections are in a way unique, since they bring about immunomodulation, in contrast to inflammation which is triggered by viral and bacterial infections. This dampens immunity and confers better survival for the pathogen. However, this also attenuates chronic inflammation and insulin resistance and thereby confers protection against type-2 diabetes. This chapter elucidates the various immune mechanisms involved in immunomodulation against insulin resistance and type-2 diabetes induced by helminth infection.
Thermodynamic and Kinetic Behaviors of Copper (II) and Methyl Orange (MO) Adsorption on Unmodified and Modified Kaolinite Clay
Authors: Kourim Aicha , Abderrahmane Malouki Moulay , Ziouche Aicha
Published: July 2021

In this study, the adsorption of Copper Cu (II) and methyl Orange (MO) from aqueous solution, on Tamanrasset’s unmodified and modified Kaolinite clay which as low cost adsorbents, was studied using batch experiments. The adsorption study includes both equilibrium adsorption isotherms, kinetics and thermodynamics study. For the characterization of the adsorbent several properties are determined such as pH, the Specific Surface Area, the Point of Zero Charge and the Cation Exchange Capacity. Indeed, various parameters were investigated such as contact time, initial metal and dye concentration, mass of solid, pH of the solution and temperature. The adsorption process as batch study was investigated under the previews experimental parameters.
Primary Care in the USA: The Long Struggle to Build its Foundational Role
Authors: Geyman John
Published: July 2021

Family practice was recognized as the 20th specialty in American medicine in 1969. With the hope that primary care would become the foundation of an improved health care system, vigorous efforts were launched in medical education, research and practice to achieve that goal. This chapter traces the history of that effort, together with negative system changes that have obstructed that goal. Although primary care physicians have been shown to improve access to care, contain costs, decrease inequities, and improve patient outcomes, they are still too few in number to meet national needs for primary care. The COVID-19 pandemic revealed the extent of inadequacy and vulnerability of the system. The U. S. still lacks a system of universal access as has been in place for many years in most other advanced countries around the world. Corporate stakeholders in a largely privatized financing and delivery system continue to challenge the future of primary care. Lessons from the failure of reform initiatives over the last 50 years are discussed, as are current reform alternatives, only one of which would at last bring universal access to health care in this country.
Origin and Impact of COVID-19 on Socioeconomic Status
Authors: Sarwar Zaman Gaffar , Al Shahrani Mesfer
Published: July 2021

The coronavirus pandemic, known as COVID-19, is an evolving pandemic caused by a coronavirus, the SARS-CoV-2. The virus was first detected in Wuhan, China, in December 2019. In January 2020, the World Health Organization (WHO) notified this upsurge as an international emergency concerning public health. It was declared a pandemic later in March 2020. By May 12, 2021, 160,363,284 cases had been registered, and 3,332,762 deaths have been reported, caused by COVID-19, characterized as a horrific pandemic in the history of humankind. Scientists have reached a consensus about the origin of COVID-19, a zoonotic virus arising from bats or other animals in a natural habitat. The economic impact of this outbreak has left far-reaching repercussions on world business transactions, along with bond, commodity, and stock markets. One of the crucial incidents that popped up was the oil price war among OPEC countries. It caused plummeting oil prices and the collapse of stock markets globally in March 2020, as the OPEC agreement failed. However, COVID-19 plays a crucial role in the economic recession. The monetary deficit impact on the travel and trade industries is likely to be huge, in billions of pounds, increasing daily. Other sectors have also suffered significantly.
Anxiety of Dental Professionals during Covid-19 Pandemic
Authors: Kiymet Karataban Pinar
Published: July 2021

Coronavirus (COVID-19) is an enveloped RNA virus with a size of ~350 kilobase-pair and COVID-19 is commonly transmitted via aerosols, saliva, nasal droplets, and surface contact which causes severe acute respiratory tract infection among infected humans, and recently many cases declared with severe blood clotting. The average incubation period ranges from 4 to 14 days. The infected person usually presents fever accompanying an upper respiratory tract infection (RTI) and complaints of dry cough, and dyspnea. It is highly recommended to keep any suspected individuals in quarantine (isolation). After its first emergence in Wuhan, China in 2019 and then intercontinental spread it was declared as a pandemic by the World Health Organization in March 2020. The pandemic of COVID-19 deeply affected the whole world and healthcare workers as front liners are most at risk among professional groups. Dentistry is among the riskiest occupational groups that include all direct and indirect ways of COVID-19 spread. In this process, the dentists who experienced the effects of COVID-19 in the working conditions, economy, and social fields were psychologically negatively affected, and their anxiety, fear, and stress levels increased. In this review, we discuss the increased risk of the spread of coronavirus during dental operative procedures and the effects of the COVID-19 pandemic on the anxiety level, depression, and mental health of dental professionals.
The Construction of Geography by Nationalism: Homeland, Motherland, Fatherland
Authors: Muradov Adalat , Tuzcuoğlu Ferruh , Ziya Bölükbaşı Yusuf
Published: July 2021

In this study, the relationship between space and geography in the composition of nationalism is examined. As a modern ideology, nationalism has been the most powerful ideology for the last two centuries that have shaped the world map, constructing identities and influencing people’s worlds of meaning. Understanding the content of nationalism, which is such a powerful ideology, is essential in understanding today’s events. Therefore, in the present study, the relationship between nationalism and geography is explained through the concept of space, which is one of the two components of identity phenomena. This statement, what is the effect of geography on the composition of nationalism? The answer to the question is made around. It is necessary to understand the conceptual and methodological frameworks of the study to answer this question. The literature review constitutes the methodological framework of the study. The literature on nationalism has been analyzed in this manner. The conceptual framework, on the other hand, constitutes nationalism, nationalism-nation, and nationalism-geography relations. French, German and Turkish nationalisms explain the concepts of homeland, motherland, and fatherland. Consequently, it can be said that in addition to the role of geography in understanding nationalism, it also determines the forms of nationalism concerning the concepts of homeland, motherland, and fatherland.
Physics-Based Modelling of Ship Replenishment at Sea Using Distributed Simulation
Authors: McTaggart K. A. , Langlois R. G.
Published: July 2021

Replenishment at sea is essential for sustainment of naval operations away from home ports. This paper describes physics-based simulation of the transfer of solid payloads between two ships. For a given operational scenario, the simulation can determine whether events such as breakage of replenishment gear or immersion of payload in the ocean will occur. The simulation includes detailed modelling of the replenishment gear and ship motions. Distributed simulation using the High Level Architecture facilitates time management and data exchange among simulation components.
Fuel-Cell Hybrid Systems to Generate Shipboard Electrical Power
Authors: Sembler W. J. , Kumar S.
Published: July 2021

The reduction of shipboard airborne emissions has been receiving increased attention due to the desire to improve air quality and reduce the generation of greenhouse gases. The use of a fuel cell could represent an environmentally friendly way for a ship to generate in-port electrical power that would eliminate the need to operate diesel-driven generators or use shore power. This paper includes a brief description of the various types of fuel cells in use today, together with a review of the history of fuel cells in marine applications. In addition, the results of a feasibility study conducted to evaluate the use of a fuel-cell hybrid system to produce shipboard electrical power are presented.
The Benefits and Cost Impact of Aluminum Naval Ship Structure
Authors: Lamb Thomas , Beavers Nathaniel , Ingram Thomas , Schmieman Anton
Published: July 2021

Due to budget pressure and a growing diversity of mission requirements, the U.S. Navy is in need of affordable and operation flexible ships. This paper presents an acquisition and total-life cycle cost comparison of steel and aluminum equivalent naval ship designs. A common perception is that aluminum ships cost significantly more than steel ships. This paper illustrates that even though the cost of the equivalent aluminum ship structure is 40% more than the steel structure, the equivalent aluminum naval ship can be built within just 7.5% of the acquisition price of the steel ship. This is possible because of the cascading benefits of the aluminum ship’s significantly lighter weight. Advances in aluminum technology and new facilities in the shipyards for aluminum production are further improving the acquisition cost of aluminum ship. From a total life-cycle cost perspective, aluminum ships enjoy a clear advantage over steel ships, the details of which are provided in this paper. Based on the findings presented in the paper it is suggested that the U.S. Navy should consider broadening its use of aluminum ships.
Comparisons between Hullform and Propulsor Combinations for a High-Speed Sealift Ship
Authors: Cusanelli Dominic S. , Wilson Michael B.
Published: July 2021

Designed ‘from the ground up’ for high speed, many trade-offs were made within the hullform parameters of this notional 298 m, 36,000 Long Ton, High Speed Sealift (HSS) ship, in an effort to optimize 39-knot performance. Resistance and powering comparisons are drawn between several hullform and propulsor combinations, considered the most applicable to HSS, which include: conventional 2-screw and 4-screw, open-propeller, shaft and strut; waterjet propulsion (axial and mixed-flow jet hulls); hybrid contra-rotating shaft-pod (twin shafts, twin pods) and dual-pods (twin sets of dual pods). This model-scale evaluation established that 39-knots was achievable by several candidate hullform and propulsor variations on this sealift ship, within the anticipated installed power levels.
Alternative Design Methodology for the Fire Safety of Composite Superstructures
Authors: Breuillard Antoine , Corrignan Philippe
Published: July 2021

This paper focuses on a risk assessment methodology developed to help define the design fire scenarios for ship structures including composites in the framework of IMO MSC/Circ. 1002. The methodology is applicable to any kind of composite material used for structural division in large composite designs.
Titanium – Attributes, Benefits, Use and Applications In the Marine Market
Authors: Mountford John A. , Scaturro Milton R.
Published: July 2021

Titanium creates value through its attributes - light weight, corrosion immunities, strength, environmentally non-toxic, performance & proven durability providing benefits of reduced fuel consumption, greater payloads/storage, reduced maintenance, labor & weight while eliminating needs for material replacement, coatings & paints. The paper outlines these attributes, benefits and specific Marine applications.
Enabling the Virtual Navy Enterprise
Authors: Briggs Ted , Carpenter Tim , Porteus Matt , Olson Mike , Gischner Burton , Lazo Pete , Wood Ron
Published: July 2021

The Virtual Navy Enterprise encompasses those Navy organizations, shipbuilders, integrators, and suppliers necessary to provide life cycle support for the fleet. The efficiency of this virtual enterprise is typically hampered by lack of interoperability and effective data exchange. This is particularly true for activities, such as Ship Alterations, that involve several different organizations.

The ISE-6 team worked with NSWC Port Hueneme Division to develop a technical approach that fosters interoperability across the Virtual Navy Enterprise. This extends the ISE-6 Phase 1 work with the PLCS standard to include exchange of technical publication data using the S1000D international standard, which allows exchange of design and logistics data between ISEAs, NAVSEA, shipyards, and OEMs. A key result was the ability to automate identification of change impacts to technical publications; reducing the costs to evaluate changes and supporting cost benefit analysis and design trade studies. The ISE-6 team also worked with the US Navy S1000D Working Group and DDG 1000 Technical Data Working Group to help formulate S1000D data module naming rules, metadata use for efficient searching, and business rule definition.

The ISE-6 team conducted a demonstration of this approach for a Ship Alteration resulting from a vendor change to the radar oscillator. The ISEA updates the radar product data and technical publication to reflect this change. An Engineering Change is coordinated between NAVSSES and the Shipyard to implement the SCD. The changes are passed, via PLCS and S1000D, to the shipyard IDE resulting in an associated change to the HVAC system to accommodate the increased heat load. The Shipyard develops a design change. The S1000D data modules affected by the AC Unit change are identified by the Shipyard and updated to reflect the change.
Qualidade externa, interna e microbiológica de ovos submetidos a diferentes condições de sanitização, temperatura e períodos de armazenamentos
Authors: Pinto Vilson Matias , Rocha Fernanda Rodrigues Taveira , Coelho Karyne Oliveira , Leite Paulo Ricardo de Sá da Costa , Sousa Júnior José Carlos de
Published: July 2021

Objetivou-se avaliar o efeito da sanitização, temperatura e período de armazenamento sobre a qualidade física e microbiológica dos ovos de galinha produzidos no município de Itaberaí, Goiás, Brasil. Foram utilizados os delineamentos inteiramente casualizado com dois arranjos fatoriais, sendo: 2x5, que considerou dois locais de armazenamento e cinco tempos de estocagem, com vinte e quatro ovos por repetição; 2x2, que considerou duas linhagens de poedeiras e dois procedimentos (lavados e não lavados), com dez repetições. Foram analisadas as qualidades físicas e microbiológicas de um total de 720 ovos de poedeiras das linhagens Hisex White e Hisex Brown. Os dados obtidos foram submetidos à análise de variância, para as variáveis microbiológicas utilizou-se o teste 't' de Student e para as variáveis físicas foi utilizado o teste de Tukey a 5% de significância, com o auxílio do software estatístico SISVAR®. Os resultados da qualidade física dos ovos de ambas as linhagens de poedeiras mostraram que os ovos armazenados em temperatura ambiente apresentaram baixa qualidade interna em comparação com os ovos refrigerados, por um período de 1, 7, 14, 21 e 28 dias de estocagem. A qualidade microbiológica da superfície da casca e conteúdo dos ovos lavados mostrou-se eficaz em comparação ao não lavados. Diante disso, o presente estudo relata a importância da lavagem e refrigeração dos ovos comerciais.
Relações peso-comprimento em camarões peneídeos de diferentes estoques no Sudeste do Brasil
Authors: Ferreira Keltony de Aquino , Di Beneditto Ana Paula Madeira
Published: July 2021

Este estudo ajusta e compara as relações peso-comprimento de três espécies de camarões peneídeos (Xiphopenaeuss kroyeri, Artemesia longinaris e Litopenaeus schmitti) capturadas em pescarias praticadas em seis portos de pesca do sudeste do Brasil, entre 18º35’S e 22º50’S, para verificar se a simpatria entre estoques de diferentes espécies influencia o crescimento relativo. A amostragem foi realizada durante o desembarque pesqueiro em junho e julho de 2017, a partir do volume total capturado na pescaria, representando uma parcela do estoque explorado. O comprimento da carapaça e peso foram aferidos em cada indivíduo coletado. As regressões peso-comprimento (P = a*CCb) foram ajustadas para machos e fêmeas separadamente, e entre os gêneros combinados. Os coeficientes alométricos (b) indicam forte alometria negativa quanto ao crescimento relativo dos camarões para todas as espécies, gêneros e estoques estudados. O peso total dos camarões aumenta a taxa relativamente menor em comparação ao comprimento do cefalotórax. Os coeficientes alométricos não diferiram entre os estoques da mesma espécie ao longo dos portos de pesca, e nem entre fêmeas e machos considerando o mesmo estoque, independentemente da presença de outra espécie no campo de pesca. Para X. kroyeri, que se distribui nos seis portos de pesca, o crescimento relativo de fêmeas, machos e gêneros combinados foi semelhante tanto onde a pesca é monoespecífica quanto na presença de outras espécies de camarões. Esse estudo apresenta o primeiro ajuste da relação peso-comprimento em estoques naturais de L. schmitti da costa dos estados do Espírito Santo (Anchieta) e Rio de Janeiro (Macaé). Recomenda-se o acompanhamento regular dos estoques para avaliar o desenvolvimento dos camarões no longo prazo e monitorar sua dinâmica de crescimento.
Una década de investigación etnobotánica en la Amazonía legal: ¿qué más se puede hacer?
Authors: Lucas Flávia Cristina Araújo , Coelho Yuri Cavaleiro de Macêdo , Santos Seidel Ferreira dos , Gois Maria Antonia Ferreira , Leão Victor Miranda
Published: July 2021

Los grupos tradicionales en la Amazonía poseen formas particulares de ocupación, uso de recursos, generación de servicios y transmisión de conocimientos de valor sustancial para su supervivencia. El objetivo de este trabajo fue analizar los escenarios, desafíos y perspectivas de los estudios etnobotánicos en la Amazonía Legal a través de bibliografías y experiencias del Grupo de Investigación 'Estudios Interdisciplinarios en Botánica' (GPEIB), de la Universidad Estatal de Pará, en un intento de reflexionar sobre los diferentes enfoques propuestos en estas singularidades culturales. Las 63 bibliografías consultadas abarcan los años 2008 a 2018, siendo obtenidas con 5 palabras-clave asociadas al término Amazonía en las plataformas SciELO, ScienceDirect y Google Scholar. Las experiencias del GPEIB contribuyeron con información relacionada al tema en el período de 2010 a 2018, desarrolladas en seis municipios de Pará. Se observó que las plantas desempeñan funciones y valores en la vida social de las comunidades. Los datos de la investigación mostraron incipientes esfuerzos intelectuales para aproximarse a la colectividad y generar apoyo pedagógico, jurídico y cultural, que pueda ser aplicado como dispositivos legales, formales e institucionalizados. Se carece de diagnósticos participativos para cada grupo investigado, que estén enfocados en la elaboración de mapeos sociales que auxilien a estos grupos a incrementar sus sistemas productivos y a combatir la explotación de sus territorios y la violación de sus formas de vida.
Larvicidal effect of Prosopis juliflora on Aedes aegypti (Diptera: Culicidae)
Authors: Azevedo Francisco Roberto de , Oliveira Gabriel dos Santos de , Moura Eridiane da Silva , Rocha Amanda Barbosa da , Silva Renato Augusto da , Silva Toshik Iarley da , Mesquita Francisco de Oliveira
Published: July 2021

The aim of this work was to evaluate the larvicidal effect of aqueous extracts of Prosopis juliflora on A. aegypti. Oviposition traps (ovitramps) were used to obtain the insect's eggs. The test was carried out at the Agricultural Entomology Laboratory of the Federal University of Cariri, Crato, Ceará, Brazil, with controlled temperature, humidity and photophase, using larvae in the 3º instar. The design used was completely randomized (DIC) with five doses (10, 20, 30, 40 and 50 g L-1) of the aqueous extract plus two control treatments (pyriproxifene at 0.01g L-1 and distilled water). The treatments were evaluated after 24, 48, 72, 96, 120, 144 and 168 h of exposure of the larvae, being considered dead those that did not react to the mechanical stimulus of a clamp. The doses of 40 and 50 g L-1 of P. juliflora are effective in the mortality of A. aegypti larvae after 48 h of exposure, with greater efficiency (100% mortality) after 120 h. The lowest doses (10 and 20 g L-1) have low mortality efficiency, while the dose of 30 g L-1 causes satisfactory mortality after 148 h of exposure. The aqueous extract of the leaves of P. Juliflora (in doses of 40 and 50 g L-1) is effective in controlling A. aegypti.
Caracterização dendrológica e diafanização foliar de espécies da família lecythidaceae com interesse madeireiro
Authors: Felsemburgh Cristina Aledi , Figueira Nayane Paula de Sousa , Souza Andressa Jaqueline Viana de , Abreu Vanessa Holanda Righetti de
Published: July 2021

A família Lecythidaceae é uma das mais populosas nas florestas tropicais, tendo maior concentração na Floresta Amazônica principalmente pela capacidade adaptativa de suas flores. Tem alta importância econômica na região amazônica, apresentando 28 espécies com potencial madeireiro, porém, apesar de seu valor econômico poucos são os estudos sobre Lecythidaceae. Com o presente estudo objetivou-se realizar a caracterização macromorfológica do fuste, da arquitetura foliar e por meio da técnica de diafanização caracterizar o padrão de nervação das folhas de quatro espécies pertencentes à Lecythidaceae, quais sejam: Couratari stellata (A.C.Sm.), Eschweilera collina (Eyma), Eschweilera coriacea ((DC.) S.A. Mori) e Eschweilera pedicellata ((Rich.) S.A.Mori), coletadas na Floresta Nacional do Tapajós. Quantos aos caracteres avaliados para o fuste, os resultados obtidos foram: base reta (3) e base com sapopemas (1); aspecto do ritidoma sujo e áspero (4). Para a arquitetura foliar foram observados ápices do tipo acuminado (3), agudo (1); base arredondada (1), cuneada (2) e obtusa (1); margem inteira (3) e crenada (1). Em relação ao padrão de nervação foliar, todas as espécies apresentaram nervura primária do tipo pinada e nervuras secundárias do tipo broquidódroma. As características macromorfológicas em conjunto com o padrão de nervação auxiliam no processo de reconhecimento das espécies nos levantamentos florísticos.
Dieta de sarapós da família sternopygidae em ambientes de praia no Rio Negro, Amazonas
Authors: Campos Wallacy Adriano Cavalcante , Vieira Thaynara Sofia Gomes , Yamamoto Kedma Cristine
Published: July 2021

Os ambientes de praia na Amazônia Central ocorrem de forma aparente nas margens de rios, paranás e lagos, através da alternância do nível da água, que ocorre a partir do ciclo hidrológico, surgindo durante a fase estacional terrestre mais conhecida como os períodos de vazante e seca. Estes habitats proporcionam abrigo e fonte de alimentação para uma diversa e abundante ictiofauna, dentre as espécies de peixes que habitam os ambientes de praias destacam-se os peixes da ordem Gymnotiformes, os quais são conhecidos popularmente como sarapós ou peixes elétricos, sendo este último, devido a capacidade de gerar uma corrente de carga elétrica para eletrolocação e interações sociais, principalmente para a família Sternopygidae, utilizada na presente pesquisa. Estudos acerca dos hábitos alimentares e dieta dos Gymnotiformes são escassos e, essa falta de conhecimento tanto pela história de vida, comportamento e ecologia são os principais pontos para o não entendimento das pesquisas realizadas, sendo assim, este estudo é primordial para a melhor compreensão dos hábitos alimentares das espécies Eigenmannia macrops, Eigenmannia trilineata e Eigenmannia virescens coletadas em praias do rio Negro. Foram analisados ao total 180 estômagos, 60 de cada espécie e todos apresentaram algum item alimentar, estando os estômagos parcialmente cheios (0-25%) até mesmo distendidos (75-100%) como se destacou para os espécimes de E. macrops. O item alimentar mais frequente foi o de inseto, seguido por material indefinido (digerido) e por fim o item material vegetal. A partir do IAi (%) pode-se classificar as espécies E. macrops (>70%) e E. virescens (>70%) na guilda trófica como insetívoras e E. trilineata como onívora com tendência a insetivoria. O valor calculado para amplitude de nicho trófico apresentou nível intermediário para E. trilineata e E. virescens e baixa para E. macrops, portanto tendo a maior dissimilaridade quanto aos itens consumidos. Quanto ao fator de condição, a espécie E. macrops demonstrou que estava em boas condições de bem-estar mesmo em período de seca, já as espécies E. trilineata e E. virescens apresentaram valores abaixo de zero, o que não as impossibilitou de explorar os recursos alimentares.
Avaliação da média anual continental da concentração de material particulado
Authors: Mota Lorrany Marins , Domingues Érica Prado , Soares Arthur Celestino , Carbone Samara
Published: July 2021

O material particulado (MP) é um poluente emitido na atmosfera por meio de atividades naturais e antrópicas. O MP é um dos responsáveis pela contaminação ambiental com desfechos em saúde humana, especialmente, problemas pulmonares, pois, devido ao seu tamanho, atinge facilmente o trato respiratório. Nesse sentido, a Organização Mundial da Saúde (OMS) estabelece padrões mundiais relacionados aos limites de concentrações de material particulado na atmosfera. E o Grupo Banco Mundial fornece dados de renda por meio da análise de variáveis relacionadas à economia de um país, elaborando relatórios anuais para acompanhamento de seu desenvolvimento. O objetivo deste estudo foi avaliar as médias anuais continentais de concentração de MP2,5 e MP10, em 2013 e 2014, levando em consideração a Diretriz de Qualidade do Ar da Organização Mundial da Saúde e a relação da concentração do poluente com a renda de cada continente. Os resultados mostraram que a África e a Ásia têm as maiores concentrações de MP. Além disso, a maior parte das cidades estudadas excedeu o limite recomendado pela OMS e foi observado que quanto menor a renda de um continente, maior a concentração de MP, indicando que a população em países/continentes pobres está mais exposta à má qualidade do ar.