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Artykuły w czasopismach na temat "Wattle Park"
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Hurford, J. L., A. T. Lombard, A. C. Kemp i G. A. Benn. "Geographical analysis of six rare bird species in the Kruger National Park, South Africa". Bird Conservation International 6, nr 2 (czerwiec 1996): 117–37. http://dx.doi.org/10.1017/s0959270900003026.
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SummaryTwenty-eight predominantly tropical bird species have ranges that only just extend into the north-eastern part of South Africa, mainly within the Kruger National Park (KNP). These species are listed as “rare” (200 breeding pairs) in the South African Red Data Book (Brooke 1984). This study assesses the extent to which six of these rare bird species represent viable populations in the KNP. Grid squares in the KNP (2.5 × 2.5 miles) were visually assessed according to several bird habitat parameters. Bird records were also plotted on this grid system and habitat associations were identified for each species. This allowed for the measurement of total suitable habitat within the KNP for each species. Bird densities within known habitat were determined using spot-mapping and fixed-distance strip-transect techniques. Estimated population sizes for each species were obtained by extrapolating density estimates to total suitable habitat. Of the six study species, Arnot's Chat, Rudd's Apalis, Wattle-eyed Flycatcher and Tropical Boubou are likely to occur in sufficient numbers to constitute viable populations within the KNP, with estimated population sizes of 1,394, 4/758/ 2,070 and 10,450 birds respectively. The populations of White-crowned Plover and Long-tailed Starling are probably too small to be viable in the long term, with estimated population sizes of 305 and 382 birds respectively. The results presented here are testable and can be used as a baseline for future monitoring.
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Guevara, Esteban, Tatiana Santander, Juan E. Guevara, Renán Gualotuña i Vinicio Ortiz. "Birds, Lower Sangay National Park, Morona-Santiago, Ecuador". Check List 6, nr 2 (1.06.2010): 319. http://dx.doi.org/10.15560/6.2.319.
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Sangay National Park is located at the mid-eastern Andean foothills of the Cordillera Oriental of Ecuador. We present a preliminary avifauna inventory corresponding to the lower zone of the Sangay National Park (SNP). One-hundred and twenty-seven bird species belonging to 39 families were recorded, including noteworthy records that represent range extensions for four species, Phaetornis hispidus (Gould 1846) (White-bearded Hermit), Ramphastos ambiguus Swainson 1823 (Black-mandibled Toucan), Phylloscartes orbitalis (Cabanis 1873) (Spectacled Bristle Tyrant), and Microcerculus bambla (Boddaert 1783) (Wing-banded Wren). We also obtained information on threatened species such as Aburria aburri (Lesson 1828) (Wattled Guan), Phlogophilus hemileucurus Gould 1860 (Ecuadorian Piedtail), and Dendroica cerulea (Wilson 1810) (Cerulean Warbler) and reproductive data on one species, Patagioenas speciosa (Gmelin 1789) (Scaled Pigeon). To our knowledge this is a first ornithological survey carried out at this specific site of the SNP.
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Rojas Vergara, Patricio, Paula Jimenez i Vilma Quitral. "Acacia saligna en Chile: semillas con potencial alimentario funcional". Ciencia & Investigación Forestal 20, nr 1 (13.07.2014): 69–75. http://dx.doi.org/10.52904/0718-4646.2014.416.
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Se entrega antecedentes sobre el recurso existente de Acacia saligna en la Región de Coquimbo en Chile, su adaptación fisiológica y la experiencia histórica en el manejo silvícola para la producción de forraje para ovinos y caprinos. Se proporciona también información reciente sobre nuevas investigaciones del potencial alimentario para la producción de harinas a través del procesamiento de sus semillas basado en la experiencia del Wattle Seed en Australia como innovación tecnológica. Esta investigación es parte del proyecto Harinas Funcionales de Acacia saligna financiado por la Fundación para la Innovación Agraria (FIA).
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Maximo, Yasmin Imparato, Angela Cristina Ikeda, Paulo César Flôres Júnior, Giovana Bomfim De Alcantara i Antonio Higa. "Optimization of genomic DNA extraction protocol for black wattle". Agrarian 13, nr 49 (27.07.2020): 323–29. http://dx.doi.org/10.30612/agrarian.v13i49.9190.
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Considerando-se que a atual tendência do melhoramento florestal é a integração das técnicas clássicas com as de análise genética molecular, faz-se necessária a obtenção de protocolos de extração de DNA genômico ajustados a cada espécie estudada. O objetivo do trabalho foi determinar o efeito de diferentes adaptações no protocolo de extração de DNA genômico CTAB para acácia-negra. Foram testados diferentes componentes na fase de extração orgânica: clorofórmio, fenol e proteinase K, além da aplicação de RNase após a fase de precipitação e limpeza do DNA. Também, foi investigada a eficiência destes tratamentos em amostras de folíolos frescas ou armazenadas em baixa temperatura durante sete dias. Foi verificada a presença de DNA de todas as amostras submetidas à extração pelo protocolo de CTAB com os diferentes tratamentos. O tempo de armazenamento das amostras não influenciou na integridade do DNA, entretanto, foi possível observar que a adição de RNase melhorou a qualidade do DNA extraído. Deste modo, sugere-se a utilização do protocolo CTAB com uso de clorofórmio e RNase, com amostras frescas ou armazenadas em baixas temperaturas.
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Papeschi, Anna, John P. Carroll i Francesco DessÌ-Fulgheri. "Wattle Size is Correlated with Male Territorial Rank in Juvenile Ring-Necked Pheasants". Condor 105, nr 2 (1.05.2003): 362–66. http://dx.doi.org/10.1093/condor/105.2.362.
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Abstract We used morphological measurements and behavioral observations to investigate the relationship between male ornaments and male social rank during the breeding season in a free-ranging population of one-year-old Ring-necked Pheasants (Phasianus colchicus). The sample was of birds of the same age class to avoid the confounding effect of age differences. Tail length, used by females in mate choice, and tarsal spur length, used by males as a weapon in fights, were not correlated with male rank, whereas the size of the wattle was the most important trait. This combined with recent studies showing that wattle size reliably indicates male testosterone levels at the beginning of the breeding season suggest that, among males, wattle size may be used as a signal of aggression level, and body condition. El Tamaño de las Carúnculas Está Correlacionado con el Rango Territorial de los Machos en Faisanes Phasianus colchicus Juveniles Resumen. Utilizamos medidas morfológicas y observaciones de comportamiento para investigar la relación entre los ornamentos de los machos y el rango social de éstos durante la época reproductiva en una población silvestre de faisanes Phasianus colchicus de un año de edad. La muestra consistió de aves de la misma clase de edad para evitar el efecto de diferencias entre edades. La longitud de la cola (utilizada por las hembras en la selección de pareja) y la longitud de la espuela tarsal (utilizada por los machos como un arma en enfrentamientos) no se correlacionaron con el rango de los machos, mientras que el tamaño de la carúncula fue el caracter más importante. En combinación con estudios recientes que muestran que el tamaño de la carúncula indica confiablemente los niveles de testosterona en los machos al inicio de la época reproductiva, esto sugiere que el tamaño de la carúncula podría ser usado como una señal de niveles de agresión y condición corporal entre los machos.
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Berlina, S. V., S. I. Tsembalyuk i A. S. Yakimov. "Structural and technical characteristics of the fortification system of the Dikaya Yama hillfort of the Early Iron Age in the Middle Tobol River area". VESTNIK ARHEOLOGII, ANTROPOLOGII I ETNOGRAFII, nr 3(54) (27.08.2021): 85–94. http://dx.doi.org/10.20874/2071-0437-2021-54-3-7.
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The paper reports the results of the studies of the fortification system of the Early Iron Age Dikaya Yama hill-fort situated in the Middle Tobol River region of the Western Siberian forest-steppe zone. The hillfort was built by the population of the Sargatka Culture, and it is dated to the 3rd c. BC — 1st c. AD. The defence lines at the junc-tion of two adjacent fortified platforms have been studied. It has been determined that the earthwork of the first platform was built up from turfen blocks; the presence of traces of postholes suggests that the earthwork was reinforced with a wooden-frame wall — a wattle fence. The ditch between the platforms had a trapezoidal shape with the size of 3.2–4 m of the upper part and 1.2–1.6 m of the lower part. The soil from the ditch was placed into the mound of the rampart of the second platform. The mathematical analysis of the volume of earth making the mound of the rampart allowed establishing its height of 2.0 m. Analysis of the stratigraphy and planigraphy re-vealed the remains of a frame structure set on the rampart. The wattle fence on top of the rampart and the para-pet along it have been reconstructed. Moreover, there have been identified the remains of a frame-and-pillar structure installed into the body of the rampart, which was aimed to strengthen the mound and prevent untimely slipping. A graphic reconstruction of the appearance of the fortifications existed on the studied site has been cre-ated. Carcass fortifications of the wattle fence type, a wall constructed in “zaplot” technique, set on the rampart, have analogies in the Early Iron Age hillforts of the Tobol-Irtysh interfluve: Kolovskoe, Rafailovskoe, Ak-Tau, and Pavlinovo. There existed a tradition of mounting a palisade into a ditch-trench — such structures have been re-corded at the hillforts of Borovushka, Likhachevskoe, Bochanetskoe, Inberen 4 and Rozanovo, Mar'ino Ushchel'ye 4 and Malo-Kazakbaevskoe. The fortification system of the hillfort of Dikaya Yama, which, structurally, is represented by the earthwork ramparts on top of which there were mounted wooden walls in the technique of the wattle fence, is consistent with the traditional scheme of the fortifications of the Early Iron Age population. The question of simultaneous or sequential building of the platforms of the hillfort will be addressed in future work. However, the unified planning solution in organizing forms of the fortification structures implies, in our opinion, preliminary design of the whole settlement and its construction at one time.
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Griffiths, Stephen R., Linda F. Lumsden, Robert Bender, Robert Irvine, Lisa N. Godinho, Casey Visintin, Danielle L. Eastick, Kylie A. Robert i Pia E. Lentini. "Long-term monitoring suggests bat boxes may alter local bat community structure". Australian Mammalogy 41, nr 2 (2019): 273. http://dx.doi.org/10.1071/am18026.
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Bat boxes are often used to provide supplementary roosting habitats; however, little is known of their impacts on community composition. Data collected from a 25-year box-monitoring and 31-year harp trapping case study provides preliminary evidence that the installation of boxes may have contributed to one species, Gould’s wattled bat (Chalinolobus gouldii), dominating the bat community of a periurban park in Melbourne. This highlights the need for systematic monitoring and empirical assessment of conservation-focused bat box programs.
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Reddy, V. R. A. P., F. Vercammen, I. Trus i H. J. Nauwynck. "Contemporary outbreaks of different avipoxviruses in Humboldt penguins of wild animal park Planckendael and in chickens of commercial poultry farms in Belgium". Vlaams Diergeneeskundig Tijdschrift 86, nr 1 (28.02.2017): 40–46. http://dx.doi.org/10.21825/vdt.v86i1.16303.
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In the present study, the first outbreak of a penguinpox virus (PPV) in Humboldt penguins (Spheniscus humboldti) and four outbreaks of fowlpox virus (FPV) in layer chickens are reported. Clinically, cutaneous wart-like growths were observed around the eyes in four juvenile Humboldt penguins and cutaneous nodular lesions in the comb, wattles, around the eyes and other unfeathered skin parts of layer chickens. Histopathology (FPV and PPV), electron microscopy (PPV), virus isolation (FPV) and PCR amplification (FPV and PPV) confirmed that both isolates were avipoxviruses (APVs). According to the phylogenetic analysis of the partial P4b core protein gene, the Belgian Humboldt PPV clustered with sequences of free-range (domestic and synanthrope bird species) and wild bird species of the United States and Europe (99 - 100% homology), and all four Belgian FPV isolates clustered with FPV isolates of chickens, turkeys, canary and FPV attenuated live vaccines from all over the world (100% homology).
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Chopra, Girish, Anil K. Tyor, Seema Kumari i Deepak Rai. "Status and conservation of avian fauna of Sultanpur National Park Gurgaon, Haryana (India)". Journal of Applied and Natural Science 4, nr 2 (1.12.2012): 207–13. http://dx.doi.org/10.31018/jans.v4i2.251.
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The present study was conducted in Sultanpur National Park Gurgaon, Haryana (India) from February, 2011 to January, 2012 to analyze the avian diversity along with its status and abundance. During the study period, a total of 113 species of birds belonging to 14 orders, 35 families and 80 genera were identified. Maximum 41 species belonging to 12 families of order Passeriformes represented 36.28% of the total identified avian fauna while Podicipediformes and Strigiformes were the least represented avian orders (0.88%) with one species each,namely, Little Grebe, Tachybaptus ruficollis and Spotted Owlet, Athene brama respectively. Out of total reported 113 species, 64 were ‘resident’ species and 49 were ‘migrant’ species. Most of the migratory species were winter visitors except Red throated flycatcher, Ficedula parva; Orange Headed Thrush, Zoothera citrine and Eurasian Golden Oriole, Oriolus oriolus which were summer visitors. In all, 42 species were ‘common’, 33 species were ‘uncommon’ and 38 species were ‘occasional’ bird species. Based on sighting, White Breasted Kingfisher, Halcyonsmyrnensis; White Breasted Water Hen, Amaurornis phoenicurus; Common Moorhen, Gallinule chloropus; Black Wing Stilt, Himantopus himantopus; Red Wattled lapwing, Vanellus indicus; Cattle Egret, Bubulcus ibis and Indian Pond Heron, Ardeola grayii were common wetland bird species of Sultanpur National Park while Pied king fisher, Ceryle rudis and Coppersmith Barbet, Megalaima haemacephala were ‘rarely sighted’ bird species. During the study period, 7 ‘globally threatened’ species, namely, Painted Stork, Mycteria leucocephala; Black neck Stork, Ephippiorhynchus asiaticus; Black headed Ibis, Threskiornis melanocephalus; Darter, Anhinga melanogaster; Pacific Reef Egret, Egretta sacra; Sarus Crane, Grus antigone alongwith Hogson bushchat, Saxicola insignis were also recorded from the study area.
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Scanlon, Annette T., i Sophie Petit. "Effects of site, time, weather and light on urban bat activity and richness: considerations for survey effort". Wildlife Research 35, nr 8 (2008): 821. http://dx.doi.org/10.1071/wr08035.
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To maximise bat retention in urban environments, efficient bat monitoring is needed, but the factors that influence survey results for urban bats are unclear. We used echolocation call detectors (n = 378 detector-nights from November 2005 to October 2006) to assess bat activity among different sites in the Adelaide City parklands, temporal variations in activity (hourly, nightly, monthly), and responses to weather and light (artificial and moon). Bat species did not occur evenly in urban conditions; dark parks were more important for bat diversity and activity (six species groups in the darkest park) than were artificially lit parkland areas (three species groups in the flood-lit park). Gould’s wattled bat (Chalinolobus gouldii) and Mormopterus species 4 (94% of calls) were advantaged in urban parklands, being the only species recorded when lights were on at sports parks, whereas five species groups occurred when the lights were off. Minimal bat activity was recorded in the first 2 h after civil twilight, suggesting that bats may roost outside the city and commute nightly into parklands. Bat activity increased with temperature, with a burst in activity occurring after 7°C. Rainfall (>1 mm/24 h) and moon illumination at midnight did not influence activity. Urban environments should provide diversity to attract a diverse assemblage of bat species. Activity fluctuated among sites, nights, and across the year, indicating that large sample sizes over long periods of time are required to monitor and survey bats reliably with detectors.
Rozprawy doktorskie na temat "Wattle Park"
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Whitehead, Georgina, i rj-gw@bigpond net au. "From acclimatisation towards ecology: The influence of environmental thought in Melbourne's public parkland ca 1850-1920". RMIT University. Architecture and Design, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080218.093050.
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This study considers how environmental concerns helped shape Melbourne's public parkland in the period 1850-1920, when Melbourne's first parks were developed and during which ecology began to replace natural history as the determinant of environmental thought. Theories propounded by such figures as Alexander von Humboldt and George Perkins Marsh profoundly influenced land management around the world during this period, and by relating specific parkland developments to professional and popular ideas about the environment the study aims to place the parkland in an international context. Previous research has given little thought to the effect of environmental thought on Melbourne's parks, except for Ferdinand von Mueller's development of the Melbourne Botanic Garden where the influence is evident. Such influence has not been considered in Clement Hodgkinson's contemporaneous development of the city's other parks and gardens even though, like Mueller, Hodgkinson was closely involved with environmental issues of the day. The Field Naturalists Club of Victoria, of which Mueller was a member, has long been credited with influencing Wattle Park's development early in the 20th century, although there is little critical analysis of the extent to which it was able to bring popular concerns about the environment to bear on park design. The relationship between Mueller's environmental views and actions and his development of the Botanic Garden is discussed first. Connections are then made between Hodgkinson's early experiences as a surveyor, his later work as Victoria's foremost land manager, his association with Mueller, and his design of Melbourne's first parks and gardens. Finally, the FNCV's involvement in park development is examined while exploring the changing nature of environmental thought. Clearly, environmental thought did influence the development of some parkland, but only those reserves administered by Mueller and Hodgkinson and only while the two men remained in control. The success of the FNCV in influencing the future direction of any Melbourne park or garden is not so easily discernible, with little evidence that the Club played an important role in Wattle Park's development.
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Finger, Anelisa Pedroso. "DIAGRAMAS DE MANEJO DA DENSIDADE PARA POVOAMENTOS DE Acacia mearnsii De Wild". Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/8785.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorDensity management diagrams (DMD) is a tool used to carry out the prognosis of production in density, basal area and volume in order to establish management strategies for forest planning. The aim was to build a density management diagram for Acacia mearnsii De Wild. Data from 12 cities in the northeastern region of Rio Grande do Sul were used for the DMD construction. Since the Tang model had the best evaluation, it was used to select the maximum population density estimative, thus the density 1x1 was used to construction of the DMD. With the same model, self-thinning graphs and Stand Density Index (SDI) were generated; adopting a standard quadratic mean diameter of 10cm. Density levels were determined proportionally to SDI maximum density in 200 class intervals, with higher 2400 and lower 1400 SDI. The DMD were produced with an average diameter and density control, and volume and green rind bark weight per hectare. A second DMD model was developed in order to insert a site production control through the dominant height of the stand. These DMD models allowed estimating the volume and green rind bark with great precision, from the control of diameter, density and dominant height.
O Diagrama de Manejo da Densidade (DMD) é uma ferramenta utilizada para realizar a prognose da produção em densidade, área basal e volume a fim de estabelecer estratégias de manejo para o planejamento florestal. O objetivo do presente foi construir um diagrama de manejo da densidade para Acacia mearnsii De Wild., com dados dendrométricos provenientes de 12 municípios da região nordeste do Rio Grande do Sul. A máxima densidade populacional foi estimada pelo modelo de Tang, ajustado com dados de parcelas em espaçamento 1x1m. Com este modelo foram gerados os gráficos de autodesbaste e Índices de Densidade de Povoamento (IDP) para um diâmetro padrão de 10cm. Os níveis de densidade foram determinados, proporcionalmente, a partir da máxima densidade, por índice de densidade de povoamento (IDP), em intervalos de classe de 200, com IDP máximo 2400 e mínimo 1400. Os DMDs foram elaborados com controle de diâmetro médio e densidade populacional, e como variável de resposta o volume por hectare e o peso de casca verde por hectare. Um segundo modelo de DMD foi elaborado com o objetivo de inserir um controle produtivo dos sítios, através da altura dominante do povoamento. Estes modelos de DMD permitiram estimar o volume e peso de casca verde com ótima precisão, a partir do controle do desenvolvimento do diâmetro, densidade e altura dominante.
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Giesbrecht, Bruna Mohr. "Caracterização tecnológica da madeira de Acacia mearnsii De Wild. para a produção de polpa celulósica Kraft". Universidade Federal de Santa Maria, 2017. http://repositorio.ufsm.br/handle/1/12855.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESThe Acacia mearnsii De Wild. is widely cultivate for the tannin extraction of its bark, while the wood, exported to the Asian countries, can be converted in cellulosic pulp. Although the efficiency of this wood on pulping is proved, in Brazil the specie is rarely used for this purpose. Thus, the aim of this work was to characterize technologically the Acacia mearnsii wood, trough chemical, anatomical and basic density analysis, and evaluate the cellulosic pulp quality, produced by the kraft process. It was collected ten trees, five from a seed production area (APS) and five from clonal plantations, which were felled and divided in discs and prepared in accordance with TAPPI T264 om-88 standart. The basic density was performed in accordance with NBR 11941 (2003) standart, and the wood description was set trough the preparation of histological slides and of macerated, according to Burger and Richter (1991) and by the nitric-acetic method, respectively, followed by anatomical measurements on microscope. It was performed quantitative analysis of the chemical components, besides the syringyl/guaiacyl ratio and the total carbohydrates content by high efficiency liquid chromatography. The kraft pulps were carried out only in APS chips, keeping constant the time, sulfidity and the temperature of cooking, changing just the active alkali charge, which ranged from 14 to 24%. In cellulosic pulps, it was evaluated the yields, kappa number and rejects content, besides the analysis of solid content in black liquor. The basic density results showed that Acacia mearnsii wood from APS and clones did not presented significant difference, with values of, approximately 0,544g/cm³. In wood description, the anatomical elements presented values much similar to the genre Eucalyptus sp., with thin to thick wall fibers (± 3,3 μm) and anatomical indices indicating suitable fibers for paper production. The chemical analysis revealed an ashes content of, approximately 0,35%, total extractives of 4,5 to 4,8%, Klason lignin of 16,2 to 17,1%, holocellulose and alpha-cellulose of 76 to 77% and 46%, respectively. The glucose content was 51,7 and 49,7% for clone and APS, while the hemicelluloses (xylose, arabinose, mannose and galactose) totaled circa 19%. The S/G ratio was 2,69 and 2,93 in clone and APS, respectively. The pulps made with different charges of active alkali presented satisfatory yields and kappa numbers. The best pulping condition was obtained with active alkali of 14%, resulting in a screened yield of nearly 57%, kappa number of 16, rejects content of ± 0,2% and solids content of 12,7%. According with the results, the Acacia mearnsii wood presents a great potential as a source of short fibers in cellulosic pulp production.
A Acacia mearnsii De Wild. é amplamente cultivada para a extração de tanino de sua casca, enquanto que sua madeira, exportada para países asiáticos, pode ser convertida em polpa celulósica. Embora existam estudos que comprovem sua eficiência na polpação, no Brasil a espécie é pouco utilizada para este fim. Desta forma, o objetivo deste trabalho foi caracterizar tecnologicamente a madeira de Acacia mearnsii, através de análises químicas, anatômicas e de densidade básica, e avaliar a qualidade de sua polpa celulósica, produzida pelo processo kraft. Foram coletadas dez árvores, cinco provenientes de área de produção de sementes (APS) e cinco clones, que foram abatidas, seccionadas em discos e preparadas em amostras conforme a norma TAPPI T264 om-88. A densidade básica foi obtida de acordo com a norma NBR 11941 (2003), e a descrição do lenho foi determinada através da preparação de lâminas histológicas e de macerado conforme Burger e Richter (1991) e pelo método nítrico-acético, respectivamente, seguidas de medições anatômicas em microscópio. Foram realizadas análises químicas quantitativas, além da relação siringil/guaiacil e o teor de carboidratos totais por cromatografia líquida de alta eficiência. Os cozimentos kraft foram realizados somente em cavacos de APS, mantendo-se constantes o tempo, a sulfidez e a temperatura, alterando apenas a carga de álcali ativo, que variou de 14 a 24%. Nas polpas celulósicas foram avaliados os rendimentos, o número kappa e o teor de rejeitos, além da análise de sólidos dissolvidos no licor negro. Os resultados de densidade básica mostram que a madeira de Acacia mearnsii de APS e clone não apresentam diferença significativa, com valor de aproximadamente 0,544 g/cm³. Com relação a descrição do lenho, os elementos anatômicos apresentaram valores muito próximos ao gênero Eucalyptus sp., com fibras de paredes finas (de ± 3,3 μm) e índices anatômicos indicando fibras adequadas para a produção de papéis. As análises químicas revelaram um teor de cinzas de aproximadamente 0,35%, extrativos totais de 4,5 a 4,8%, lignina Klason de 16,2 a 17,1%, holocelulose e alfa-celulose de 76 a 77% e 46%, respectivamente. O teor de glicose foi de 51,7 e 49,7% para clone e APS, enquanto que as hemiceluloses (xilose, arabinose, manose e galactose) somaram aproximadamente 19%. A relação S/G foi de 2,69 e 2,93 em clone e APS, respectivamente. As polpas produzidas com diferentes cargas de álcali ativo apresentaram rendimentos e número kappa satisfatórios. A melhor condição de polpação foi obtida com álcali ativo de 14%, resultando em um rendimento depurado de aproximadamente 57%, número kappa de 16, teor de rejeitos de ± 0,2% e teor de sólidos de 12,7%, valores utilizados pelas indústrias de celulose. De acordo com os resultados, a madeira de Acacia mearnsii apresenta grande potencial como fonte de fibras curtas na obtenção de polpa celulósica.
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Alves, Gilberto Demari. "Escarificação mecânica com areia para superação de dormência em sementes de acácia-negra (Acacia mearnsii De Wild.)". Universidade Federal de Pelotas, 2008. http://repositorio.ufpel.edu.br/handle/ri/1467.
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Previous issue date: 2008-08-26The black wattle (Acacia mearnsii De Wild.) is, the third forest specie of larger economical importance, more than 189 thousand ha are cultivated now, in Rio Grande do Sul, Brazil. According its socio-environmental importance it can be considerate the first in importancy in this state regarding the enormous benefits given to the black-wattle grower and to the environment, such as: regenerator of degraded soils specie; short life pioneering specie; quickly covering the soil; not presenting stump sprouting; it doesn't inhibit the local succession and the high deposition of their nitrogen rich leaves, cause the enriching of the soil. Black wattle has also the capacity of making symbiosis with microorganisms fixatives of atmospheric nitrogen. Producing quality wood for energy and cellulose; the tannin extracted from its peel is used for leather curing industry and in wines and beers clarification. More or less 60% of black wattle growers are of small producers, about 40 thousand families live from that activity. One of the limiting factors in the uniformity of the black-wattle's seedlings production is the low of quality of their seeds. The quality of the seedlings and the forest produced by them will depend on the dormancy and on the method used for its break. With the objective of accelerating and standardization of the germination in the process of seedlings production, we went after an alternative method that should be more practical and efficient, in the break of black-wattle s seed dormancy. To reach these objectives the mechanical scarification method was tested, using sand to polish as scarificant material and the model GDA-8 escarificator. This GDA-8 scarificator was developed as part of the research project during Post Graduation Program in Science and Technology of Seeds of FAEM (Faculdade de Agronomia Eliseu Maciel) / UFPEL, by comparing it to the conventional method that uses hot water. The black-wattle seeds used in this research are originated from trees that were three, four, five and six years old, in Joca Tavares district in Bagé / RS. Scarification was made using the following proportion: one part of seeds was used to three parts of sand with thin granularity average of 0,75 mm, for 1 1/2 minute. Mechanical damage, germination, first counting and weight of green and dry matter tests were developed, in the Laboratory of Analysis of Seeds of FAEM and Emergency and Emergency Velocity Index (IVG) in the vegetation home of Votorantim Cellulose and Paper s dependences, located in Capão do Leão/RS municipal district. The random experimental work was with three repetitions and the averages compared by the test of Tukey at the level of 5%.
A acácia negra (Acacia mearnsii De Wild.) é a terceira espécie florestal de maior importância econômica para o RS, no qual são cultivados mais de 189 mil ha atualmente. Considerando-se a importância sócio-ambiental, é a primeira neste estado, haja vista os enormes benefícios auferidos pelos acacicultores e ao meio ambiente, como: espécie recuperadora de solos degradados, espécie pioneira de vida curta, que cobre rapidamente o solo, não apresenta rebrota de cepa, não inibe a sucessão local e enriquece o solo pela elevada deposição de folhedo rico em nitrogênio. Também tem capacidade de efetuar simbiose com microrganismos fixadores de nitrogênio atmosférico. Produz madeira de qualidade para energia e celulose, de sua casca é extraído o tanino usado na indústria, desde o curtimento de couros, até clarificação de vinhos e cervejas. Cerca de 60 % dos acacicultores, da região produtora, são pequenos produtores, e 40 mil famílias vivem dessa atividade. Um dos fatores limitantes na produção de mudas uniformes de acácia negra é a baixa qualidade de suas sementes. Da dormência e do método utilizado para a sua superação, dependerá a qualidade das mudas e das florestas produzidas por estas sementes. Com o objetivo de acelerar e padronizar a germinação no processo de produção de mudas, buscou-se estudar um método alternativo que fosse prático e eficiente, na superação da dormência em sementes de acácia negra. Para alcançar estes objetivos, foi testado o método de escarificação mecânica, utilizando-se areia como material escarificante e, escarificador modelo GDA-8, concebido como parte do projeto de pesquisa desenvolvido durante o P.P.G. em Ciência e Tecnologia de Sementes da FAEM / UFPEL comparado ao método convencional que utiliza água quente. As sementes de acácia-negra, utilizadas nesse trabalho, foram provenientes de cultivos com três, quatro, cinco e seis anos, localizados no distrito de Joca Tavares em Bagé / RS. Para a escarificação, usou-se a proporção de uma parte de sementes para três de areia com granulometria fina, com média de 0,75 mm, durante um minuto e meio. Foram realizados testes de dano mecânico, germinação, primeira contagem e peso de matéria verde e seca, no Laboratório de Análise de Sementes da FAEM e Emergência e Índice de Velocidade de Emergência em casa de vegetação nas dependências da Votorantin Celulose e Papel, localizada no município de Capão do Leão / RS. O delineamento experimental foi o inteiramente casualisado, com três repetições e as médias comparadas pelo teste de Tukey ao nível de 5 %.
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Yenser, Helen E. "LINDA LAND: A Short Story". Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/scripps_theses/1001.
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“LINDA LAND” is a short story about a man who created an amusement park based on Hell, and his teenage son, who has developed a crush on the preacher’s daughter. Though there are many real-life muses that inspired the story—like Simon Rodia, the artist behind the Watts Towers—the four main literary sources are William Shakespeare’s play, “Romeo and Juliet,” Karen Russell’s novel, “Swamplandia!,” Sylvia Plath’s poem, “Mirror,” and Charlie Kaufman’s screenplay, “Adaptation.”
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Bacurau, Rodrigo Moreira 1988. "Medidor de energia inteligente para discriminação de consumo por aparelho através de assinatura de cargas". [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258975.
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Orientador: Elnatan Chagas FerreiraDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
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Resumo: Neste trabalho é apresentado o desenvolvimento de um módulo medidor de energia residencial capaz de medir, além do consumo de energia total, os parâmetros elétricos necessários para a discriminação de consumo de energia por aparelho. Também é apresentado um levantamento de quais parâmetros elétricos derivados das curvas de tensão e corrente são úteis para a definição de assinatura de cargas residenciais. Os resultados dos experimentos realizados indicaram a potência ativa, a potência reativa, o fator de potência, a tensão e corrente eficazes e as cinco primeiras harmônicas ímpares do sinal de corrente como os parâmetros mais adequados para uso em sistemas não intrusivos para identificação de consumo por aparelho. Graças a técnicas de programação e decisões de projeto acertadas, foi possível desenvolver um módulo medidor de alta precisão e baixo custo, usando um microcontrolador simples e de baixo consumo. Este módulo é capaz de calcular todas as grandezas elétricas supramencionadas a frequência de 46 Hz. Os valores de tensão, corrente, fator de potência, potência ativa e potência aparente apresentaram erros inferiores a 0,3% (para cargas resistivas). O erro nas componentes harmônicas do sinal de corrente foi de 0,03% para a componente fundamental, 0,58% para a 3ª harmônica, 3,69% para a 5ª harmônica, 6,63% para a 7ª harmônica e 11,81% para a 9ª harmônica. O medidor desenvolvido será usado no projeto "Sistema Inteligente de Gestão Energética para Unidades Consumidoras de Baixa Tensão" o qual consistirá em um sistema completo de gestão de consumo de energia residencial
Abstract: We present in this project the development of a residential power meter module capable of measuring besides the total energy consumption, the electrical parameters needed for power consumption breakdown. We also present a study of which electrical features derived from current and voltage waveforms are more adequate to define signatures of residential loads. The experimental results indicated that the active power, reactive power, power factor, voltage, current and the first five odd harmonics of the current signal are good parameters to use in Non-Intrusive Load Monitoring Systems - NILM. Thanks to the use of advanced programming techniques and right design decisions, we developed, using a simple microcontroller, a high-precision, low-power and low cost smart meter. This module is capable to calculate all electrical parameters above mentioned at 46 Hz frequency. The voltage, current, power factor active and apparent power presented errors lower than 0.3% for resistive loads. The error in the harmonics of the current signal was 0.03% for the fundamental harmonic, 0.58% for the 3rd harmonic, 3.69% for the 5th harmonic, 6.63% for the 7th harmonic and 11.81% for the 9th harmonic. The smart meter presented here will be used in a larger project entitled "Intelligent Energy Management System for Consumer Units Low Voltage" which consists of a complete management system of residential energy consumption
Mestrado
Eletrônica, Microeletrônica e Optoeletrônica
Mestre em Engenharia Elétrica
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Saidelles, Fabio Luiz Fleig. "Deterinação da biomassa e altura de amostragem para a quantificação de nutrientes em Acacia mearnsii De Wild". Universidade Federal de Santa Maria, 2005. http://repositorio.ufsm.br/handle/1/3789.
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The objective of this study was to quantify the biomass and to determine the optimal sampling point for nutrients quantification in four year old Acacia mearnsii trees. It was conducted in black wattle stand, located in Arroio dos Ratos city in a farm belonging to SETA S/A, having as coordinates 30° 07 12 of south latitude and 51° 57 45 of longitude, with 90 m of average altitude. The first step was the forest
inventory, where 30 trees were felled, distributed in 7 diametric classes, to cover the stand heterogeneity, then the biomass and the nutrients amount in the leaves, live branches, dead branches, roots, wood and bark were determined. Samples of wood and bark were taken along the stem in the posítions of: 1, 3, 10, 20, 30, 40, 50, 60, 70, 80 and 90% of the total height. The total biomass from Acacia mearnsii trees was of 72, 91 Mg ha-1 and was divided in: 64% in the wood, 11% in the roots, 10% in the bark, 7% in the live branches, 5% in the dead branches and 3% in the leaves. The
total amount of macronutrients (kg ha-1) were: 384,94 of N, 15,69 of P, 200,06 of K, 267,74 of Ca, 58,54 of Mg and 18,57 of S, and the micronutrients (g ha-1) were: 1.249,01 of B, 195,33 of Cu, 6.485,64 of Fe, 1.073,52 of Mn and 809,33 of Zn. From this total, the leaf component accumulated 20% of the N, 18% of P and Cu, 12% of the K, 5% of Ca and Fe, 10% of Mg and S, 17% of B, 19% of Mn and 6% of Zn; the roots accumulated 14% of N, Cu , Mn and Zn, 11% of P and K, 8% of Ca, 7% of Mg, 15% of S, 17% of B and 66% of Fe; the wood accumulated 21% of N, 27% of P, 30% of K, 50% of Ca, 36% of Mg, 45% of S, 26% of B and Mn, 37% of Cu, 9% of Fe and 41% of Zn; the bark accumulated 22% of N and Mg, 17% of P, 21% of P and Ca, 22% of Mg, 10% of S, Fe and Cu, 20% of B and Mn and 12% do Zn; the dead branches accumulated 8% of N, S and B, 6% of P, 4% of K, 7% of Ca, 11% of Mg,
Cu and Zn, 5% of Fe and 9% of Mn; the live branches accumulated15% of N, 21% of P, 22% of K, 9% of Ca, 13% of Mg and B, 12% of S and Mn, 10% of Cu, 5% of Fe and 16% of Zn. The total amount of carbon stored in the biomass was 29,79 Mg ha-1, allocated 64% in the wood, 11% in the roots, 9% in the bark, 7% in the live branches and 4% in the dead branches and leaves. The nutrients Ca, Mg, S, B, Cu, Fe, Mn and Zn didn t show significant difference along the stem to wood and bark, indicating that there isn t an exact point
for sampling along the stem to nutrients quantification. The optimal sampling point to nutrients (N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn) quantification along the stem should be 50% from the total height in Acacia mearnsii treesO objetivo deste estudo foi quantificar a biomassa e determinar o ponto ótimo de amostragem para a quantificação de nutrientes em árvores de Acacia mearnsii com quatro anos de idade. O trabalho foi realizado em um povoamento de acácia-negra localizado na cidade de Arroio dos Ratos, em uma fazenda pertencente à empresa SETA S/A, nas coordenadas 30° 07 12 de latitude sul e 51° 57 45 de longitude, com altitude média de 90m. O primeiro passo foi a realização do inventário florestal no povoamento, onde foram abatidas 30 árvores, distribuídas em 7 classes diamétricas, para cobrir a heterogeneidade do povoamento. Após foram determinados a biomassa e o teor de nutrientes dos componentes: folha, galho vivo, galho morto, raiz, madeira e casca. Para os componentes madeira e casca foram retiradas amostras ao longo de fuste nas posições de 1, 3, 10, 20, 30, 40, 50, 60, 70, 80 e 90% da altura total das árvores. A biomassa total das árvores de Acacia mearnsii com quatro anos foi de 72,91 Mg ha-1, distribuída 64% na madeira, 11% nas raízes, 10% na casca, 7% nos galhos vivos, 5% nos galhos mortos e 3% nas folhas. A quantidade total de acronutrientes, em kg ha-1, foi 384,94 de N; 15,69 de P; 200,06 de K; 267,74 de Ca; 58,54 de Mg; e 18,57 de S; e de micronutrientes (gha-1), foi 1.249,01 de B; 195,33 de Cu; 6.485,64 de Fe; 1.073,52 de Mn; e 809,33 de Zn. Deste total, o componente folha acumulou 20% do N, 18% do P e Cu, 12% do K, 5% do Ca e Fe, 10% do Mg e S, 17% do B, 19% do Mn e 6% do Zn; as raízes acumularam 14% do N, Cu , Mn e Zn, 11% do P e K, 8% do Ca, 7% do Mg, 15% do S, 17% do B e 66% do Fe; a madeira acumulou 21% do N, 27% do P, 30% do K, 50% do Ca, 36% do Mg, 45% do S, 26% do B e Mn, 37% do Cu, 9% do Fe e 41% do Zn; a casca acumulou 22% do N e Mg, 17% do P, 21% do P e Ca, 22% do Mg, 10% do S, Fe e Cu, 20% do B e Mn e 12% do Zn; os galhos mortos acumularam 8% do N, S e B, 6% do P, 4% do K, 7% do Ca, 11% do Mg, Cu e Zn, 5% do Fe e 9% do Mn; os galhos vivos acumularam 15% do N, 21% do P, 22% do K, 9% do Ca, 13% do Mg e B, 12% do S e Mn, 10% do Cu, 5% do Fe e 16% do Zn. O carbono total estocado na biomassa foi 29,79 Mg ha-1, distribuído 64% na madeira, 11% na raiz, 9% na casca, 7% nos galhos vivos e 4% nos galhos mortos e folhas. Para os nutrientes cálcio (Ca), magnésio (Mg), enxofre (S), boro (B), cobre (Cu), ferro (Fe), manganês (Mn) e zinco (Zn), não foi verificada variação significativa ao longo do fuste, para os componentes madeira e casca, indicando qualquer altura para amostragem no fuste para quantificação dos nutrientes. O ponto ótimo de amostragem, para quantificação dos nutrientes (N, P, K, Ca, Mg, S, B, Cu, Fe, Mn e Zn) no fuste, deve situar-se a 50% da altura total das árvores de Acacia mearnsii
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Sobral, Fábio Stefano Batista. "Avaliação do potencial eólico para geração de energia na zona rural do Estado de Sergipe". Universidade Federal de Sergipe, 2009. https://ri.ufs.br/handle/riufs/4301.
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The production of energy alternative can provide economic development and employment opportunities, especially in agricultural areas. The work seeks as main objectives the rising and the statistical treatment of the data of winds of the State of Sergipe. As specific objectives still seek the simulation of the annual energy generated starting from an aerogenerating for rural use, and the simulation of the amount of water capable of being pumped through a low cost bomb and potency.The values of the meteorological variables were obtained in stations automatic meteorological and you stipulate distributed in the State. These elements served as base for rising of the medium speeds of wind, the schedules of better use of the system aeolian. The statistical treatment for determination of the behavior of the winds in the researched municipal districts was beacon in the calculation of averages, variances, distribution of frequencies and of the function of distribution of probability Rayleigh, case peculiar of the distribution Weibull, thoroughly diffused in studies of potential aeolian. These analyses allowed to extract all the information starting from the obtained gross data of the stations and they were simulate in the software Statistica 7.0. The period of the day in that were registered to largest medium speeds it is the
period of the afternoon understood between 12:00 hours and 18:00 hours for all the researched municipal districts, being this period chosen for the simulations in software. As the use and simulations of the system aeolian to assist the needs of agricultural electric feeding were used as model for the tests a turbine aeolian with potency of 400 W, simulated in the Software EOLOSOFT of NUTEMA-PUCRS and all the municipal
districts presented conditions of wind speed capable to supply the essential provisioning, mainly in what it tells respect the provisioning of water for consumption and irrigation. It
was not white of this work the study of economic viability of the system aeolian in relation to the cost of the turbine and accessories of the system for maker.A produção de energia alternativa pode prover desenvolvimento econômico e oportunidades de emprego, especialmente em áreas Rurais. O trabalho visa como objetivos principais o levantamento e o tratamento estatístico dos dados de ventos do Estado de Sergipe. Como objetivos específicos visa ainda a simulação da energia anual gerada a partir de um aerogerador para uso rural, e a simulação da quantidade de água capaz de ser bombeada através de uma bomba de baixo custo e potência. Os valores das variáveis meteorológicas foram obtidos em estações agrometeorológicas automáticas e convencionais distribuídas no Estado. Estes elementos serviram de base para levantamento das velocidades médias de vento, os horários de melhor aproveitamento do sistema eólico. O tratamento estatístico para determinação do comportamento dos ventos nos municípios pesquisados balizou-se no cálculo de médias, variâncias, distribuição de freqüências e da função de distribuição de probabilidade Rayleigh, caso particular da distribuição Weibull, amplamente difundida em estudos de potencial eólico. Estas análises permitiram extrair todas as informações a partir dos dados brutos obtidos das estações e foram simuladas no software Statistica 7.0. O período do dia em que foram registradas a maiores velocidades médias é o período da tarde compreendido entre 12:00 horas e 18:00 horas para todos os municípios pesquisados, sendo este período escolhido para as simulações em software. Quanto a utilização e simulações do sistema eólico para atender as necessidades de alimentação elétrica rural foi utilizado como modelo para os testes uma turbina eólica com potência de 400 W, simulada no Software EOLOSOFT do NUTEMA-PUCRS e todos os municípios apresentaram condições de velocidade de vento capaz de fornecer o abastecimento essencial, principalmente no que diz respeito a abastecimento de água para consumo e irrigação. Não foi alvo deste trabalho o estudo de viabilidade econômica do sistema eólico em relação ao custo da turbina e acessórios do sistema por fabricante.
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Cunha, Flaviane Rodrigues da. "Aplicação do programa i-Tree Hydro para avaliar os efeitos da cobertura arbórea na dinâmica hidrológica de uma bacia hidrográfica urbana". Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-15032019-161655/.
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A urbanização acelerada e mal planejada pode ocasionar diversas alterações e consequências para o ambiente, como a sistemática impermeabilização do solo, que pode ocasionar aumento do escoamento superficial da água e redução do tempo de escoamento, gerando problemas como enchentes, alagamentos, aumento do risco de desastres naturais, entre outros. A criação de mais áreas verdes pode ser considerada uma alternativa adequada para reduzir esses fenômenos, frente à rápida e crescente expansão urbana. Como os benefícios hidrológicos das árvores em ambiente urbano ainda são pouco explorados por pesquisadores, sobretudo no Brasil, existe a necessidade de se determinar o quanto a cobertura arbórea é capaz de influenciar na redução das consequências de eventos extremos para os ambientes urbanos. O i-Tree Hydro é um programa pioneiro em relacionar explicitamente os efeitos das árvores nas águas pluviais em área urbana, fornecendo diretrizes para o planejamento do espaço em áreas sensíveis à fenômenos ambientais. Portanto, este trabalho pretende aplicou o programa em uma bacia hidrográfica da cidade de São Paulo, com o objetivo de melhor compreender como a disposição das árvores podem influenciar em uma área densamente urbanizada. Foi possível concluir utilizando o programa i-Tree Hydro que se aumentamos a cobertura arbórea e diminuímos a impermeabilização da bacia a uma queda de 12% na vazão média anual. Enquanto, fazendo o processo oposto e aumentando a impermeabilização e diminuindo a cobertura arbórea o volume médio anual da bacia aumenta cerca de 6%. Também foi possível concluir neste trabalho que apenas aumentando a cobertura arbórea da bacia de estudo sem alterar a impermeabilização é possível uma redução de 4% na vazão média anual da bacia e que a remoção de toda cobertura arbórea da mesma provoca um aumento de cerca de 21% , aumentando a média anual em aproximadamente 700 m³.Accelerated and poorly planned urbanization can cause a number of changes and consequences for the environment, such as systematic soil sealing, which can lead to increased water runoff and reduced run-off time, generating problems such as flooding, flooding, natural disasters, among others. The creation of more green areas can be considered an adequate alternative to reduce these phenomena, in front of the rapid and increasing urban expansion. As the hydrological benefits of trees in urban environments are still little explored by researchers, especially in Brazil, there is a need to determine how much tree cover is capable of influencing the reduction of the consequences of extreme events for urban environments. The i-Tree Hydro is a pioneering program to explicitly relate the effects of trees to rainwater in urban areas, providing guidelines for space planning in areas sensitive to environmental phenomena. Therefore, this work intends to apply the program in a river basin of the city of São Paulo, in order to better understand how the use of permeable pavements and the quantity and arrangement of trees can influence in a densely urbanized area. It was possible to conclude by using the i-Tree Hydro program that we increased the tree cover and decreased the waterproofing of the basin to a fall of 12% in the average annual flow. Meanwhile, by doing the opposite process and increasing waterproofing and decreasing tree cover the average annual volume of the basin increases by about 6%. It was also possible to conclude in this work that only increasing the tree cover of the study basin without altering the waterproofing is possible a reduction of 4% in the average annual flow of the basin and that the removal of all the tree cover of the same causes an increase of about 21 %, increasing the annual average by approximately 700 m³.
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MAIA, Divanira Ferreira. "Desenvolvimento de membranas cerâmicas para separação de óleo/água". Universidade Federal de Campina Grande, 2006. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/2005.
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A presença de óleo na água produzida durante a extração de petróleo, causa sérios problemas tanto ao ser descartada no meio ambiente como ao ser reinjetada nos poços produtores de petróleo. Os métodos convencionais utilizados na separação óleo/água não conseguem limpar toda a água com eficiência e baixo custo. Assim sendo, a busca por novas alternativas para solucionar este problema foi a motivação principal deste trabalho, sendo este parte integrante de uma série de pesquisas, financiadas pela Agência Nacional de Petróleo (ANP), que visa otimizar todas as etapas de produção de petróleo. Assim o objetivo deste trabalho foi produzir membranas cerâmicas visando a sua aplicação na separação óleo/água. Inicialmente foram obtidos dois tipos de membranas tubulares de alumina, denominadas tipo 1 e tipo 2, com diferentes tamanhos de poros de aproximadamente 0,9\im e 15,5nm e com eficiências mínimas de aproximadamente 97,5% e 93,8%, respectivamente. Porém a membrana tipo 2 apresentou um fluxo 40 vezes maior que a membrana tipo 1. Assim, visando melhorar mais ainda o desempenho da membrana tipo 2 depositou-se sobre a mesma uma camada fina de zircônia, de forma que pudesse melhorar sua eficiência sem alterar significativamente seu fluxo. O pó de zircônia foi obtido com sucesso pelo método Pechini. Com este método foi possível a obtenção da zircônia cristalina cujos tamanhos de aglomerados indicaram que este material pode ser usado na obtenção de membranas de ultrafiltração. Para obtenção da camada de zircônia foi preparada uma suspensão com a zircônia obtida e esta foi depositada na parte interna da membrana de alumina tipo 2 usando a técnica de deposição "dip coating". A camada de zircônia formada apresentou uma espessura de 23,9 ^im, um fluxo superior a membrana de alumina tipo 1 e uma eficiência mínima de 97,8%. Para todas as membranas obtidas, a concentração de óleo no permeado foi abaixo de 7 ppm, usando concentração máxima de 1000 ppm na alimentação. A água permeada através das membranas estudadas se enquadraram nas especificações para uso na reinjeção e no descarte.
The presence of oil in water produced during the petrol extraction can cause serious problems during the discharge in the environment as well as in the re-injection in the oil well. The conventional methods used to remove oil from water can not clean with efficiency and low cost. So, the search for new alternatives to solve this problem is the motivation of this work. This study is part of a series of researches supported by Agência Nacional de Petróleo (ANP), with the aim to optimize ali the steps in the oil production. The aim of this work is to make ceramic membrane to be applied in the oil/water separation. Firstly, it was prepared two types of tubular alumina membranes, called type I and type 2, with different pore size of approximately 0.9nm and 15, 48nm, respectively. The minimal efficiency of these membranes was approximately 97.5% and 93.8% for membrane type I and type 2, respectively. However, the membrane type 2 shown a flux 40 times greater than the membrane type 1. To improve the use of the membrane type 2 it was coating the internai surface with a thin layer of zircônia to get better efficiency without to decrease the flux. The zircônia powder was prepared with success by Pechini method and it was obtained a crystalline zircônia with agglomerates that indicate the use to make ultrafiltration membranes. To obtain the zircônia layer it was prepared dispersion and deposited in the internai surface of the membrane type 2 by dip coating technique. The zircônia layer presented a thickness of 23.88}im, a flux grater than the alumina type 1 and a minimal efficiency of 97.8%. Ali studied membrane presented oil content in permeate below 7ppm, using a maximum concentration of lOOOppm in the feed tank. The permeate water through the studied membranes is in agreement with the norms to be discharge in the environment or to be re-injected in the oil well.
PRH 25.
Książki na temat "Wattle Park"
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Paek, Ki-wan. Ije ttaenŭn watta: Paek Ki-wan sijip. Sŏul Tʻŭkpyŏlsi: Pʻulpit, 1985.
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PRICE, John. Postman's Park: G. F. Watt's memorial to heroic self-sacrifice. Watts Gallery, 2008.
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Los Pilares de Tu Exito: Una guía para encontrar prosperidad, felicidad y balance en el acelerado mundo del siglo XXI. Los Angeles, California, USA: Editorial Esperanza, 2011.
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Rucci, Enzo. Evaluación de rendimiento y eficiencia energética de sistemas heterogéneos para bioinformática. Editorial de la Universidad Nacional de La Plata (EDULP), 2018. http://dx.doi.org/10.35537/10915/66533.
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El problema del consumo energético se presenta como uno de los mayores obstáculos para el diseño de sistemas que sean capaces de alcanzar la escala de los Exaflops. Por lo tanto, la comunidad científica está en la búsqueda de diferentes maneras de mejorar la eficiencia energética de los sistemas HPC. Una tendencia reciente para incrementar el poder computacional y al mismo tiempo limitar el consumo de potencia de estos sistemas consiste en incorporarles aceleradores y coprocesadores, como pueden ser las GPUs de NVIDIA y AMD o los coprocesadores Xeon Phi de Intel. Por otra parte, las FPGAs aparecen como una opción promisoria para HPC debido a su capacidad de cómputo creciente, su bajo consumo energético y al desarrollo de nuevas herramientas que facilitan su programación. Estos sistemas híbridos que emplean diferentes recursos de procesamiento se denominan sistemas heterogéneos y son capaces de obtener mejores cocientes FLOPS/Watt.
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Isaac, Watts. Logic: Or, the Right Use of Reason in the Inquiry after Truth... . by Isaac Watts, Part 4. HardPress, 2020.
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Fieni, David. Decadent Orientalisms. Fordham University Press, 2020. http://dx.doi.org/10.5422/fordham/9780823286409.001.0001.
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This book explores the confluence of decadence and Orientalism since the mid-nineteenth century in French and Arabic writing. It demonstrates how French Orientalism set the terms of modernity for Arab and Muslim thinkers and writers, but also how the latter responded to and transformed these terms. The book argues that Orientalism is doubly decadent: it describes the supposedly inherent degeneration of the Semitic and the “Oriental,” and in so doing Orientalism attempts to contribute to the decay of these societies. Through comparative close readings of French, Francophone, and Arabic texts, the author outlines how notions and representations of decadence and decay during the colonial and postcolonial periods have in fact produced symbolic and social disintegration in parts of the Arab world. Part 1 of the book examines the role of philology, secularism, Islamic reformism, and colonial policy in the configurations of colonial modernity during the second half of the nineteenth century, focusing on the Arab East (or Mashreq) and Algeria. Part 2 turns to Maghreb to explore the ways that loss becomes nationalized and gendered in the postcolonial era and how Maghrebi writers engage with the legacy of Orientalist decadence to find ways beyond it. In the context of these questions, it offers analyses of work by a wide range of writers, including Ernest Renan, Jamal al-Din al-Afghani, Ahmed Faris al-Shidyaq, Farah Antun, Céline, Tahar Wattar, Tahir Djaout, Ahlam Mosteghanemi, Yamina Méchakra, Assia Djebar, Hélène Cixous, Abdelwahab Meddeb, and Abdelkebir Khatibi.
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Downie, Alan. Epilogue: The English Novel at the End of the 1760s. Redaktor Alan Downie. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199566747.013.36.
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This chapter analyzes the market for the English novel at the end of the 1760s. As far as British fiction is concerned, there were peaks and troughs during the 1760s rather than a steady upward curve, but by the end of the century getting on for 100 new novels were appearing annually in contrast to the forty listed for the year 1770. What was being offered to the reading public during the period were ‘Probable Feign’d Stories’ satisfying the most basic requirements of what Ian Watt called ‘formal realism’, a development in which Henry Fielding played an influential role. The chapter shows that, at the end of the 1760s, the British novel was patently flourishing, thanks in large part to the publishing of several innovative forms of prose fiction such as the Gothic and the sentimental novel.
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Beal, Amy C. Big Band Theory. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036361.003.0008.
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This chapter focuses on the Carla Bley Band, a ten-person big band Bley had spent several years establishing. The Carla Bley Band effectively became the instrument for which she composed, the vehicle through which she could let her sonic imagination run free. The establishment of her own large ensemble following the creation of her recording studio, record label, and distribution service was part of a logical chain of events, one indicating a further step in Bley's ongoing quest for total artistic control in the creation, administration, and dissemination of her music. This freedom allowed Bley to focus on an uninhibited exploration of musical ideas in her compositions. Over the next few years the Carla Bley Band toured both Europe and the United States, recorded six albums on Watt between 1977 and 1983, and contributed a soundtrack of preexisting pieces for a Claude Miller film called Mortelle Randonee.
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Skoulding, Zoë. Poetry & Listening. Liverpool University Press, 2020. http://dx.doi.org/10.3828/liverpool/9781789621792.001.0001.
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Listening has always mattered in poetry, but how does poetry change when listening has been transformed? In Poetry and Listening: The Noise of Lyric, the field of sound studies, which has revolutionised research in contemporary music, is brought into dialogue with new lyric criticism. Examining poetry as mediated by performance, technology and translation, this book discovers how contemporary poetry has been re-energised by the influence of recorded sound and influenced by the creative methods that emerged with it. It offers an exploration of contemporary poetry’s acoustic contexts, moving beyond traditional analysis of poetic form to consider the social, political and ecological dimensions of a poem's sounds and silences. Through detailed discussion of innovative English-language poetry from the UK and USA, including works by Denise Riley, Sean Bonney, Caroline Bergvall, Mei-mei Berssenbrugge, Carol Watts, Claudia Rankine, Vahni Capildeo, Tom Raworth, Emma Bennett, Jonathan Skinner, Holly Pester, Tracie Morris, Hannah Silva, Rhys Trimble, Peter Hughes, Jeff Hilson and Tim Atkins, it argues for the centrality of listening to a form of composition in which language not only represents sonic experience but is part of it. With reference to Jean-Luc Nancy’s distinction between hearing and listening, alongside other key theorists of sound and noise, it shows how poetry offers insights into sensory perception, and how it charts acoustic relationships between language and the environment.
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Ledger-Lomas, Michael. Ministers and Ministerial Training. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199683710.003.0021.
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Protestant Dissent was assailed by Anglo-Catholics in England and by the Mercersburg Theologians in the United States for its fissiparous tendencies, sectarian nature, and privileging of emotional conversionism over apostolic order and objective, sacramental religion. Yet this chapter argues that personal conversion was essential to the faith of Dissent and the key to its spirituality, worship, and congregational life. Whether conversion was gradual or instantaneous, it remained the point of entry into the Christian life and the full privileges of church membership. Spurred by the preaching of the gospel and sometimes, but not always, accompanied by the application of the divine law, the earlier underpinning of conversionism in Calvinism gave way to an emphasis on human response. Popular in both the United States and Great Britain, the ‘new measures’ of the Presbyterian evangelist Charles Finney, in which burdened souls were called forward to ‘the anxious bench’ and prayerfully incited to undergo the new birth, brought thousands into the churches. However, in more liberal circles especially, conversion had by the end of the century become less of a crisis of guilt and redemption than a smooth progression towards spiritual fullness. Although preaching was often linked, especially in the first part of the century, with revivalist exuberance, it remained a mainstay of congregational life. Mainly expository and practical with a view of building up congregants in the faith, it was accompanied by hymn singing, scriptural readings, public prayers, and the two sacraments or ‘ordinances’ of baptism and the Lord’s Supper. Sermons tended to become shorter as the century progressed, from an hour or so to thirty or forty minutes, while the ‘long prayer’, invariably offered by the minister, tended to be didactic in tone. From mid-century onwards, there was a move towards more rounded worship, though congregations would sit (or sometimes stand) for prayer, but not kneel. The liturgical use of the church year with congregational recitation of the Lord’s Prayer became slowly more acceptable. Communion, either monthly or quarterly, was usually a Zwinglian memorial of Christ’s atoning sacrifice. The impact of the temperance movement during the latter part of the century dictated the use of non-alcoholic rather than fermented wine in the Lord’s Supper, while in a reaction to Anglican sacerdotalism, baptism too, whether believers’ baptism or paedo-baptism, progressively lost its sacramental character. Throughout the century, Dissenters sang. In the absence of an externally imposed prayer book or a standardized liturgy, hymns provided them with both devotional aids and a collective identity. Unaccompanied at first, hymn singing, inspired mostly by the muse of Isaac Watts, Charles Wesley, and, in Wales, William Williams, became more disciplined, eventually with organ accompaniment. Even while moving towards a more sophisticated, indeed bourgeois mode, Dissent maintained a vibrant congregational life which prized a simple, biblically based spirituality.
Części książek na temat "Wattle Park"
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"part 3. The Watts Towers and Community Development". W Sabato Rodia's Towers in Watts, 307–8. Fordham University Press, 2020. http://dx.doi.org/10.1515/9780823260669-019.
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James, Felicity, i Rebecca Shuttleworth. "Susanna Watts and Elizabeth Heyrick". W Women's Literary Networks and Romanticism, 47–72. Liverpool University Press, 2018. http://dx.doi.org/10.5949/liverpool/9781786940605.003.0003.
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This chapter explores the cultural and literary importance of a little-known network of women writers in the Midlands – significance which is rooted in, but extends far beyond, their local setting. Focussing on two Leicester writers and friends, the abolitionist and animal rights campaigners Susanna Watts (c.1768 - 1842) and Elizabeth Heyrick, née Coltman (1769-1831) it gives an insight into the rich culture of provincial women and restores a range of female voices to our understanding of Midlands society, religion, literature and reform. Collaboratively written itself, this chapter explores and contextualises collaborative practices, emphasising the importance of local community, worship, and friendship. While Heyrick, Watts and their circle should be seen as part of a larger anti-slavery network operating in the period, it is also important to recognise the subtle differences between groups which complicate our idea of the collective female voice in the period.
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Wordsworth, William. "144. W. W. to Alaric Watts". W The Letters of William and Dorothy Wordsworth, Vol. 4: The Later Years: Part I: 1821–1828 (Second Revised Edition), redaktorzy Ernest De Selincourt i Alan G. Hill, 284–85. Oxford University Press, 2000. http://dx.doi.org/10.1093/oseo/instance.00083297.
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Wordsworth, William. "182. W. W. to Alaric Watts". W The Letters of William and Dorothy Wordsworth, Vol. 4: The Later Years: Part I: 1821–1828 (Second Revised Edition), redaktorzy Ernest De Selincourt i Alan G. Hill, 376–77. Oxford University Press, 2000. http://dx.doi.org/10.1093/oseo/instance.00083336.
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Wordsworth, William. "186. W. W. to Alaric Watts". W The Letters of William and Dorothy Wordsworth, Vol. 4: The Later Years: Part I: 1821–1828 (Second Revised Edition), redaktorzy Ernest De Selincourt i Alan G. Hill, 381. Oxford University Press, 2000. http://dx.doi.org/10.1093/oseo/instance.00083340.
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Wordsworth, William. "189. W. W. to Alaric Watts". W The Letters of William and Dorothy Wordsworth, Vol. 4: The Later Years: Part I: 1821–1828 (Second Revised Edition), redaktorzy Ernest De Selincourt i Alan G. Hill, 383. Oxford University Press, 2000. http://dx.doi.org/10.1093/oseo/instance.00083343.
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Wordsworth, William. "190. W. W. to Alaric Watts". W The Letters of William and Dorothy Wordsworth, Vol. 4: The Later Years: Part I: 1821–1828 (Second Revised Edition), redaktorzy Ernest De Selincourt i Alan G. Hill, 384. Oxford University Press, 2000. http://dx.doi.org/10.1093/oseo/instance.00083344.
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Wordsworth, William. "196. W. W. to Alaric Watts". W The Letters of William and Dorothy Wordsworth, Vol. 4: The Later Years: Part I: 1821–1828 (Second Revised Edition), redaktorzy Ernest De Selincourt i Alan G. Hill, 391. Oxford University Press, 2000. http://dx.doi.org/10.1093/oseo/instance.00083350.
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[Hutchinson], Mary Wordsworth. "209. M. W. to Alaric Watts". W The Letters of William and Dorothy Wordsworth, Vol. 4: The Later Years: Part I: 1821–1828 (Second Revised Edition), redaktorzy Ernest De Selincourt i Alan G. Hill, 418. Oxford University Press, 2000. http://dx.doi.org/10.1093/oseo/instance.00083363.
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Wordsworth, William. "215. W. W. to Alaric Watts". W The Letters of William and Dorothy Wordsworth, Vol. 4: The Later Years: Part I: 1821–1828 (Second Revised Edition), redaktorzy Ernest De Selincourt i Alan G. Hill, 425. Oxford University Press, 2000. http://dx.doi.org/10.1093/oseo/instance.00083370.
Pełny tekst źródłaStreszczenia konferencji na temat "Wattle Park"
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Oka, Jude M., Tim A. Stone, Paul H. Smith, Jacob D. Riglin, Mike L. Caviness, Peter H. Carson i Mark P. Croce. "Initial Thermal Testing of the Pipe Over-Pack Container With a Combustible Waste Matrix for Los Alamos National Laboratory". W ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-66191.
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Los Alamos National Laboratory (LANL) Technical Area 55 (TA 55) utilizes several different container types to store and transfer special nuclear material and waste for numerous programs. The Pipe Over-pack Container (POC) is a vented carbon steel container with a removable lid designed for storing or transferring nuclear waste. Additionally, TA 55 has been tasked to manage and store all of its Transuranic (TRU) waste for the foreseeable future. Being able to place more material into a single container conserves the physical storage space available at TA 55. Conducting thermal testing with a combustible waste matrix in the POC can benefit stakeholders on increasing the material limits of the container. The results of these measurements will establish new wattage limits to meet LANL’s transportation requirements. The current LANL Transportation Safety Document (TSD) limits the amount of heat source plutonium to 10 grams per POC, corresponding to approximately 5 Watts of heat. Combustible loading consisted of an arrangement of cellulosics, plastics, rubber and other contents such as tape. An initial arbitrary limit was set at 60 °C reflecting previous research on nitrate contaminated cheesecloth within a combustible loaded matrix. The limit will ensure the sensitivity of nitrate contaminated contents is undisturbed. Two tests were conducted on the waste matrix at 9.3 watts and 15 watts payloads. Each test was conducted within an 8 hour work day while observing the transient response to ensure the testing does not exceed the temperature limit. Results show that with a 15 watt payload the temperature at the source reaches the 60 °C limit within 5 hours of testing. Other areas such as the cheesecloth and plywood are under the arbitrary limit. Observations and pictures showed no signs of material degradation from heat loading which allow us to move past the limit and investigate higher payloads. ANSYS numerical modeling has complemented the efforts by producing predictions within 5% error of experimental results. These results along with previous POC thermal testing will be presented to the Packaging and Transportation (OS-PT) group at LANL to assist in raising the heat source plutonium loading limit.
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Suh, Junwoo, Ahmed Shuja, Praveen Medis, Srinivas Parimi, Frank M. Gerner i H. Thurman Henderson. "Operating Ranges of the Planar Loop Heat Pipe Under Non-Vacuum Conditions". W ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72381.
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As the trend of high throughput in small packages continues, the heat dissipation becomes a very critical design issue in electronic devices and spacecrafts. The two phase loop heat pipe utilizes the latent heat of working fluid. It consists of an evaporator, compensation chamber, condenser, and liquid and vapor line. The primary wick used as a core part to circulate the working fluid is located in the evaporator. The planar loop heat pipe uses coherent porous silicon (CPS) wick as opposed to the conventional cylindrical configuration, which uses a sintered amorphous metal wick. The clear evaporator machined from Pyrex glass and transparent silicone tubes were utilized to monitor the complex phenomena which occur in the evaporator. Tests were conducted under the non-vacuum condition without a secondary wick. DI-water was used as a working fluid. Like an open loop test previously conducted, there was an operating range in which the liquid could be properly pumped from the compensation chamber to the vapor line under the pumping motion. In this device, more than 6 Watts could be convected from the evaporator to the ambient. Therefore circulation was not observed until powers greater than 6 Watts. There was a circulation of working fluid occurring due to energy transport within the loop when the input power was from 7.94 Watts to 17.6 Watts. The quantity of heat transportation to the loop was calculated by acquiring the empirical heat transfer coefficient. From this calculation it was found that, roughly, 12.1 Watts was transported to the loop and 5.51 Watts was convected to the ambient from the evaporator itself when the applied power was 15.27 Watts. This paper was also originally published as part of the Proceedings of the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems.
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Maciel, Lucas, João Paulo Novais, Matheus Souza, Mark Song i Henrique Cota Freitas. "Arquitetura Heterogênea CPU+FPGA para Análise Formal de Conceitos". W XX Simpósio em Sistemas Computacionais de Alto Desempenho. Sociedade Brasileira de Computação, 2019. http://dx.doi.org/10.5753/wscad.2019.8659.
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Algoritmos para análise formal de conceitos são amplamente estudados para extrair padrões de inteligência computacional e descoberta de conhecimento. No entanto, eles exigem processamento de alto desempenho devido às suas caracterı́sticas combinatórias. Neste trabalho, foi projetada e avaliada uma arquitetura heterogênea de CPU+FPGA para acelerar a extração de conceitos em grandes conjuntos de dados. Os resultados encontrados mostram um speedup de até 3,95x com até 120,63x mais operações por Watt em relação a uma versão executada em CPU. Em comparação com o software In-Close2-BDD, essa arquitetura é mais rápida (e.g. 4,06x) para vários conjuntos de dados, processando até 1 milhão de objetos.
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Da Costa Lopes, Andrey, João Paulo Vieira, Luiz Eduardo Sales e Silva, Camila Souza Alves i Fábio Alexandre Martins Monteiro. "Avaliaçao de Desempenho de Tecnologias Emergentes para Controle de Tensão em Redes de Distribuição com Elevada Penetração de Microgeração Fotovoltaica". W Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1145.
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No cenário atual, a crescente penetração da Microgeração Distribuída Fotovoltaica (MGDFV) na Rede de Distribuição de Baixa Tensão (RDBT) tem proporcionado problemas técnicos, tais como fluxo de potência reverso, flutuação de tensão e sobretensão. Estes ocorrem devido às altas relações R/X dos cabos da RDBT associadas à injeção elevada de potência ativa pela MGDFV. Tais problemas, por sua vez, tem gerado prejuízos financeiros tanto para as concessionárias como para os consumidores residenciais. Na literatura técnica, tecnologias e equipamentos emergentes, tais como inversores inteligentes com as funções avançadas Volt-VAr e Volt-Watt e Sistemas de Armazenamento de Energia a Baterias (SAEB), surgem como soluções potenciais para mitigar os problemas mencionados. Esse artigo avalia de forma comparativa os desempenhos das técnicas de controle Volt-VAr, Volt-Watt e de um controle de carga/descarga de SAEB residencial, destacando as potencialidades e limitações de cada técnica. As simulações foram implementadas em uma rede real de distribuição de um lote residencial. Dentre as técnicas adotadas para mitigar o problema, os resultados mostraram um melhor desempenho para o uso de SAEB, enquanto que o uso de controle Volt/VAr apresentou um pior desempenho.
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Schwendtner, Daniel T., M. Ruhul Amin i David M. Klumpar. "Analytical and Experimental Study to Predict Radiated Heat Power Between a Satellite and Thermal Shroud". W ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37087.
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Nanosatellites, a class of small satellites, are becoming increasingly popular because of their small form factor and many other attractive features. In the process of qualifying nanosatellites for space readiness, their thermal behavior can be investigated in a laboratory setup using a thermal vacuum system to mimic orbital conditions. For these reasons, a thermal vacuum system suited specifically for nanosatellites was desired for performing thermal vacuum testing. Analytical calculations and laboratory testing were performed as part of the design of this thermal vacuum system. A set of simultaneous equations was solved using the LU Decomposition method to find the radiosities of several surfaces in an enclosure. The radiosities along with their respective view factors were then used to solve for the heat power required to heat and cool the thermal shroud under steady state conditions at the most extreme operating conditions expected. The analysis was performed on a system of three concentric cylinders of varying heights: the outer being the vacuum chamber wall, the middle the thermal shroud inside the chamber, and the inner the satellite. Under the most extreme operating conditions expected, the thermal shroud was cooled to −40°C and the satellite heated to 80°C during satellite cooling and the reverse during satellite heating. All surfaces in the enclosure were assumed to be diffuse, grey, opaque and isothermal. The thermal shroud was separated into two surfaces: the cylindrical shroud body and the shroud top disc. From the analytical results, the expected heating power for the shroud body was found to be 704.0 Watts, and 229.8 Watts for the shroud top. During cooling, where the temperatures were reversed, the expected heat power for the shroud body was calculated as −685.5 Watts, and −220.9 Watts for the shroud top. An experimental setup was tested under similar conditions as a comparison and as a method to validate the thermal shroud design and the analytical calculations. The shroud body and top heaters were selected to output 750 Watts and 230 Watts, respectively, and were driven at their maximum output, with the satellite held at −40°C. The shroud reached 80°C with no difficulty, indicating that the analytical calculations had correctly predicted the required heat power and that the design of the thermal shroud was capable of supporting testing under the most extreme conditions expected.
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Freitas, Cristopher G. S., Heitor S. Ramos, Raquel S. Cabral, Osvaldo A. Rosso i André L. L. Aquino. "Caracterização de topologia de Redes Veiculares baseada em Teoria da Informação". W X Simpósio Brasileiro de Computação Ubíqua e Pervasiva. Sociedade Brasileira de Computação - SBC, 2018. http://dx.doi.org/10.5753/sbcup.2018.3285.
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Redes Veiculares podem ser estudadas utilizando o comportamento individual de cada véıculo em relação ao tempo, caracterizados pelo deslocamento ou velocidade. No entanto, neste trabalho iremos analisar o comportamento do grafo agregado, que descreve a rede em um aspecto global, encapsulando toda a dinâmica dos véıculos durante o intervalo total amostrado, assim, verificando seus aspectos estruturais com quantificadores de Teoria da Informação para mapear esses dados no plano Complexidade-Entropia. Este método foi aplicadoá 17 redes veiculares, variando suas topologias em V2V, V2I e V2V2I, de forma que seus grafos agregados apresentaram uma dinâmica variável entre o comportamento dos modelos Watts-Strogatz e Barabási-Albert.
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P. Carlette, Luan, i Djalma M. Falcão. "Análise do Impacto de Inversores Inteligentes Aplicados a Redes de Distribuição em Baixa Tensão". W Simpósio Brasileiro de Sistemas Elétricos - SBSE2020. sbabra, 2020. http://dx.doi.org/10.48011/sbse.v1i1.2246.
Pełny tekst źródłaStreszczenie:
A micro geração fotovoltaica residencial é a mais difundida no país e está conectada diretamente à rede de baixa tensão. Uma análise dos impactos da geração distribuída nesse segmento do sistema elétrico é de alta relevância, já que essas redes não dispõem de recursos para controle de tensão e estão suscetíveis a defeitos causados pela elevada penetração de recursos distribuídos. Este trabalho se propôs a testar três estratégias de controle, aplicadas a inversores inteligentes, para mitigar os impactos no perfil de tensão causados por essa elevada penetração nas redes de baixa tensão. São elas: fator de potência constante, controle Volt-Watt e Volt-Var. De modo geral, as três estratégias foram capazes de melhorar o perfil de tensão. No entanto, o fator de potência constante aumentou significativamente as perdas, o Volt-Watt cortou geração, diminuindo o retorno sobre o investimento no sistema, e o Volt-Var foi o menos efetivo na diminuição da tensão, aumentou também as perdas, mas sem sacrificar a injeção de potência ativa. A escolha da melhor estratégia está associada também à definição de prioridades: menos perdas, maior retorno econômico ou tensão mais próxima da nominal.
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Do Amaral, Alessandro, Denis Lima i Sávio Cantero. "Sistema de monitoramento de energia Elétrica através da tecnologia do arduíno." W IV Encontro Nacional de Computação dos Institutos Federais. Sociedade Brasileira de Computação - SBC, 2020. http://dx.doi.org/10.5753/encompif.2017.9940.
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O presente trabalho tem com meta ajudar as pessoas ter um melhor controle de seus gastos com energia elétrica usando um produto de baixo custo. Será realizado o monitoramento do consumo de energia em watts para poder calcular quanto de energia está gastando e qual será o valor na próxima leitura do relógio. Será utilizada a placa Arduino, plataforma de prototipagem eletrônica, que se comunicará com o sensor não invasivo SCT-013-020 e um servidor web aonde será armazenada os dados e os gerenciará em tempo real que vai conter informações do valor e índice de consumo da próxima fatura. Espera-se que haja uma conscientização quanto à redução dos gastos e preservação da natureza.
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Novotny, Vaclav, Jan Spale, Barbora Bryksi Stunova, Michal Kolovratnik, Monika Vitvarova i Petr Zikmund. "3D Printing in Turbomachinery: Overview of Technologies, Applications and Possibilities for Industry 4.0". W ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-91849.
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Abstract Customization and providing tailored products, while keeping highly automated production with minimum manufacturing personnel, is a general trend, and one of the expectations of manufacturing companies from developed countries to stand in competition against cheap mass production. This trend, often also called “industry 4.0”, is taking advantage of many innovative and quickly developing technologies like AM or 3D printing. Applications of 3D printing are also getting into the field of turbomachinery. The first part of the paper provides a review of current 3D printing technologies with respect to applications in turbomachinery field. Several technologies, mostly for producing a metal or plastic product, exist and can be considered. Applications for the components range from single Watts to hundreds MW scale and similarly for various other operating conditions. The second part briefly describes possible practical applications concerning multiple situations as research and development, customization of end-product, operative field-testing, or temporary replacements.
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Mindek, Richard B., Aaron F. Rickis i Said Dini. "Development of an Alternative Energy System For Use as an Active Learning Platform". W ASME 2007 Energy Sustainability Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/es2007-36086.
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A demonstration system that employs solar and wind energy to power a fuel cell was recently developed as part of a senior capstone design project. This system demonstrates the essential components of a completely renewable hydrogen recovery system. Using the renewable energy produced from a 80-watt photovoltaic solar panel and a 60-watt wind turbine, an electrolyzer, rated at 65 cm3 per minute, disassociates water into its components of hydrogen and oxygen. The hydrogen and oxygen are then recombined into water by the fuel cell, which produces electricity and releases heat in the process. The electricity is used to power a cooling fan installed in the system. The entire system, which is mounted on a mobile cabinet for easy transportability, and to facilitate outdoor testing, includes a control box to regulate the voltage and current into the electrolyzer, as well as a variable resistance box to test and demonstrate the energy efficiencies of the solar panel, wind turbine, electrolyzer, and fuel cell. It was recently incorporated as part of three separate active learning laboratories within a graduate course on alternative and renewable energy. The laboratories allow students to discover the theoretical and practical application of solar energy, wind energy, and fuel cells. This paper describes the development, operation and capability of the alternative energy demonstration system, as well as its utilization in developing the graduate laboratories. Plans for implementing the system in the undergraduate engineering curriculum are also discussed.
Raporty organizacyjne na temat "Wattle Park"
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Bernal, Luz Mery, Claudia Marcela Sabogal, Greizy López Leal, Nancy Yaneth Gelvez, Gustavo Jaimes i Marta Lucía Tamayo F. Hipercolesterolemia familiar y diagnóstico. Revisión de la producción científica con apoyo de indicadores bibliométricos. Universidad Nacional Abierta y a Distancia - UNAD, 2021. http://dx.doi.org/10.22490/ecisa.4756.
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La Hipercolesterolemia Familiar (HF) es un trastorno genético que provoca el aumento del colesterol en la sangre y un incremento importante de desarrollo de ateroesclerosis. Objetivo: establecer el estado de la investigación en el tema de hipercolesterolemia familiar, revisar los principales documentos desarrollados en relación con la temática y explorar los posibles vacíos de conocimiento que surjan de este ejercicio académico con respecto al diagnóstico. Métodos: Se realizó una revisión con indicadores bibliométricos desde artículos de la base de datos de Web of Science, para el análisis se utilizaron los programas libres VOSviewer y Bibliometrix aplicación de R. Adicionalmente se revisaron los textos más citados. Resultados: Un total de 1102 artículos fueron hallados mediante los criterios de inclusión (HF y diagnóstico). Los autores más citados fueron Watts, GF. de Australia con n=32 publicaciones y 1279 citas, seguido por Kastelein, JP. de Holanda con n=28 publicaciones y 1157 citas, y Hegele, RA. de Canadá con n=30 publicaciones y 1003 citas asociadas a sus publicaciones. Discusión: La revisión indica producción importante en diagnóstico de HF en estos últimos diez años y progresos en el diagnóstico; sigue habiendo vacíos del conocimiento relacionados con la implementación de las políticas públicas, la falta de conocimiento sobre los riesgos de la HF en todos el personal interviniente y el desarrollo de las pruebas más efectivas y económicas.