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Bibliografie tematiche / Golden Grove

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Letteratura scientifica selezionata sul tema "Golden Grove"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 19 febbraio 2022

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Articoli di riviste sul tema "Golden Grove"

1

Hughes, Neil A., Mark van Heerden e Lucas Williams. "Imaging high quality conductors at Golden Grove". ASEG Extended Abstracts 2018, n. 1 (dicembre 2018): 1–6. http://dx.doi.org/10.1071/aseg2018abw9_1e.

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Spisak, April. "The Golden Specific by S. E. Grove". Bulletin of the Center for Children's Books 69, n. 2 (2015): 90–91. http://dx.doi.org/10.1353/bcc.2015.0749.

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3

Bosman, Caryl. "A district package: Constituting community — golden grove 1984–2002". Journal of Australian Studies 27, n. 76 (gennaio 2003): 17–26. http://dx.doi.org/10.1080/14443050309387820.

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4

Humphrey, J. D. "New Geochemical Support for Mixing-Zone Dolomitization at Golden Grove, Barbados". Journal of Sedimentary Research 70, n. 5 (1 settembre 2000): 1160–70. http://dx.doi.org/10.1306/101399701160.

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5

Meyers, Allan. "Striking for Freedom: The 1831 Uprising at Golden Grove Plantation, Cat Island". International Journal of Bahamian Studies 21, n. 1 (28 ottobre 2015): 74–90. http://dx.doi.org/10.15362/ijbs.v21i1.246.

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6

Wood, Betty, e T. R. Clayton. "Slave birth, death and disease on golden grove plantation, Jamaica, 1765–1810". Slavery & Abolition 6, n. 2 (settembre 1985): 99–121. http://dx.doi.org/10.1080/01440398508574882.

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7

Steadman, David W., e Sharyn Jones. "Long-Term Trends in Prehistoric Fishing and Hunting on Tobago, West Indies". Latin American Antiquity 17, n. 3 (settembre 2006): 316–34. http://dx.doi.org/10.2307/25063055.

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AbstractWe compare the bone assemblages of Milford 1 (TOB-3) and Golden Grove (TOB-13) in Tobago, West Indies. Milford 1 is a small preceramic occupation (ca. 3000-2800 cal B.P.), whereas Golden Grove is a large ceramic-period village (ca. 1700-900 cal B.P.). Species richness at TOB-13 is greater than at TOB-3, both in marine (67 vs. 39 fishes) and terrestrial (32 vs. 9) taxa. Major shifts in marine exploitation from the preceramic to ceramic periods can be seen in relative abundance of tuna, toadfishes, and in fishes inhabiting mangrove and brackish water environments, and decreases in relative abundance of parrotfish, carnivorous reef fishes, and sea turtles. The abundance of tuna bones at TOB-13 is uniquely high among West Indian archaeological sites. For terrestrial taxa, the difference in species richness exceeds the expected, including decreased specialization on big game (peccaries) at TOB-13, with a greater tendency to hunt reptiles, birds, and mammals of all sizes at TOB-3. Factors underlying the shifts in fishing and hunting may include different collection methods and food preferences of non-Arawakan (preceramic) vs. Arawakan (ceramic) peoples, as well as human-induced declines in populations of peccaries, sea turtles, and selected fish species. Another possible factor is site setting, with the inhabitants of TOB-13 having enhanced access to mangrove habitats.

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Basinger, J. F., D. R. Greenwood, P. G. Wilson e D. C. Christophel. "Fossil flowers and fruits of capsular Myrtaceae from the Eocene of South Australia." Canadian Journal of Botany 85, n. 2 (gennaio 2007): 204–15. http://dx.doi.org/10.1139/b07-001.

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Flowers and fruits of the Myrtaceae are described from the Middle Eocene Golden Grove locality of South Australia, and the taxon is here named Tristaniandra alleyi gen. et sp.nov. Flowers are pentamerous and perigynous, with sepals, petals, and stamens inserted on the rim of a hypanthium. Filaments are basally fused to form antepetalous stamen bundles, each consisting of about 6–8 stamens. The tricarpellate ovary becomes exserted on maturation, forming a partly exserted, dry fruit with loculicidal dehiscence. These features are typical of capsular-fruited members of the Myrtaceae; in particular, taxa in the tribe Kanieae. While the characteristics of the fossils are not found within any one extant genus, the fossils show some similarity to living species of Tristaniopsis , although the staminal bundles are more comparable to those found in Tristania , which is only distantly related and has a rather different fruit. Capsular-fruited Myrtaceae are now primarily confined to Australasia, and appear to have had a Gondwanic origin in the latest Cretaceous to Paleogene. Nevertheless, as fossil flowers and fruits are rare, and infrafamilial identification of pollen and leaves is difficult, the Paleogene record of capsular Myrtaceae is largely equivocal. The Golden Grove fossils establish a record of the tribe Kanieae within Eocene coastal rainforest vegetation at paleolatitude 55°–58°S during a time of global warmth.

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Wang, Q., L. Schi⊘tte e I. H. Campbell. "Geochronology of supracrustal rocks from the Golden Grove area, Murchison Province, Yilgarn Craton, Western Australia∗". Australian Journal of Earth Sciences 45, n. 4 (agosto 1998): 571–77. http://dx.doi.org/10.1080/08120099808728413.

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Lewis, David T. R. "The Hirlas Horn of Henr Tudor – Which One?" Welsh History Review / Cylchgrawn Hanes Cymru 30, n. 1 (1 giugno 2020): 46–55. http://dx.doi.org/10.16922/.30.1.3.

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This article explores one significant aspect of the historiography of the tradition surrounding Henry Tudor's march through Wales to Bosworth and how a Carmarthenshire family, the Vaughans of Golden Grove, enhanced and promoted their gentry status, image and loyalty to the Crown by acquiring and displaying and then later replicating what became known as the Hirlas Horn. The Vaughans thereby engaged with the history of Wales to their own advantage by retrospectively inventing their family's involvement in the Bosworth legends and traditions associated with this important part of Welsh history.

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Tesi sul tema "Golden Grove"

1

Holmes, Michael. "Social mix in metropolitan Adelaide : a case study of the Golden Grove area /". Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09AR/09arh752.pdf.

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2

Smith, Matthew John. ""Working in the grave" the development of a health and safety system on the Witwatersrand gold mines, 1900-1939". Thesis, Rhodes University, 1993. http://hdl.handle.net/10962/d1002410.

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This thesis analyses the establishment of a health and safety system on the Witwatersrand gold mines in the period between the end of the South African War and the eve of World War Two. The period has been chosen, firstly, because the South African War had seriously disrupted production and the industry virtually had to start up again from scratch; secondly, because it was during this period that mine and state officials began to seriously investigate the reasons for the appalling mortality and morbidity rates on these mines; and, thirdly, because during this period some improvements did occur which were significant enough to enable the industry to warrant the lifting, in the latter part of the 1930s, of the ban on tropicals, enforced since 1913 as a result of their extremely high mortality rate. In the first thirty years of the twentieth century about 93 000 African miners died disease-related deaths and in the same period some 15000 African miners were killed in work-related deaths. In attempting to establish why so many African miners died, the thesis attempts to identify the diseases and accidents that caused these deaths and considers what attempts were made to bring mortality and morbidity rates down. Whilst the thesis is neither a history of gold mining in South Africa nor an economic history of South Africa in the period 1901 to 1939, it nevertheless, as detailed in the first chapter, places the health and safety system within the context of the wider political and economic forces that shaped the mining industry in this period. The need for a productive and efficient labour force, vital for the industry'S survival during a number of profitability crises in this period, forced the industry to reassess compound structures, nutrition and eventually the health of its work force. These issues of compounds, work and diet are discussed in chapters two, three and four. Appalling living and working conditions led to a high incidence of pulmonary diseases - TB, silicosis and pneumonia - which were the principal killers on the mines. Attempts to cure or prevent their occurrence are discussed in chapter five. Fear of disruptions to production ensured that the mining industry eventually also devoted considerable resources to accident prevention, a theme which is discussed in chapter six. The thesis concludes that the mining industry for much of this period was able to determine the pace of change; neither state officials nor African miners were able to significantly alter the tempo. In fact the industry was so successful that it was able to convince a number of government commissions in the 1940s that the migrant system had to stay, to ensure the wellbeing of the miner. This meant that despite considerable time, money and effort being spent on establishing a health and safety system on the gold mines, the mining industry was still of the opinion that the health of their workers was best served if they were sent home.

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Oliveira, Sergio Luiz Santos de. "O grupo (de esquerda) de Osasco. Movimento estudantil, sindicato e guerrilha (1966-1971)". Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/8/8138/tde-25062012-164453/.

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A presente pesquisa tem por objetivo estudar a trajetória do Grupo de Osasco, grupo que reunia operários, estudantes e estudantes-operários. Para o desenvolvimento de nosso projeto utilizaremos fontes documentais provenientes de inquéritos policiais e material produzido pelas organizações revolucionárias (periódicos, manifestos, programas). Estes documentos são encontrados em arquivos como o Arquivo do Estado de São Paulo e o Centro de Documentação e Memória da UNESP (CEDEM). Também trabalharemos com História Oral, com base em depoimentos colhidos com personalidades que estiveram diretamente envolvidas com os eventos analisados em minha pesquisa. O recorte cronológico abrangerá o período que vai de 1966, início das atividades políticas do Grupo de Osasco, até 1971, quando praticamente todos os seus membros estavam exilados, presos ou mortos. Em setembro de 1971 tomba a última grande liderança remanescente de Osasco, José Campos Barreto, juntamente com Carlos Lamarca, no sertão da Bahia. Ao longo da segunda metade da década de sessenta, o Grupo de Osasco foi o principal movimento de esquerda nesta cidade. Em meados de 1968 dominava o movimento estudantil local, reunido em torno do CEO; dominava o sindicato dos metalúrgicos, e expandia sua influência a outras categorias através da criação de comissões de fábrica, mecanismo de representação que articulava os trabalhadores pela base, a margem do sindicato. Possuíam um vereador e vários representantes seus nas secretárias municipais. Pouco antes do AI-5, este grupo estava organizando associações de bairro sob sua influência, e nessas associações ministravam cursos de marxismo para populares. Coube ao Grupo de Osasco a organização da greve de julho de 1968, que se somou a onda de manifestações anti-ditadura que sacudiram o país. A repressão pós greve de julho jogou praticamente todos os militantes do Grupo de Osasco na clandestinidade, e estes acabaram por se integrar a VPR e partiram para a luta armada.
This research aims to study the trajectory of the Group of Osasco, group bringing together workers, students and student-workers. For development of our project will use documentary sources from of police investigations and material produced by organizations revolutionary (journals, manifestos, programs). These documents are found in archives and the Archive of State of São Paulo and the Documentation Center and Memorial of UNESP (CEDEM) . Also work with oral history, based on testimonies gathered with personalities who were directly involved in the events analyzed in my research. The outline will cover the chronological period from 1966, beginning of political activities of the Group of Osasco, until 1971, when virtually all of its members were exiled, imprisoned or killed. In September 1971 falls the last great remaining leadership of Osasco, Joseph Campos Barreto, along with Carlos Lamarca, in the interior of Bahia. Throughout second half of the sixties, the Group was the main Osasco leftist movement in this city. In mid-1968 dominated the movement local student, gathered around the CEO; dominated the union metallurgical, and expanded its influence to other categories by creating workplace committees, representation mechanism which articulated the workers at the base, the margin of the union. They had a city councilman and several their representatives in the municipal secretaries. Shortly before the AI-5, this group was organizing neighborhood associations under its influence, and these ministered associations for popular courses on Marxism. It fell to Group Osasco organizing the strike in July 1968, which added to the wave anti-dictatorship protests that rocked the country. The repression of post strike July played virtually every militant group in Osasco underground, and these will eventually join the VPR and went to battle armed.

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Bosman, Caryl. "Building 'community': sites of production, planning practices and technologies of suburban government in the making of the Golden Grove Development, 1984-2003". 2005. http://arrow.unisa.edu.au:8081/1959.8/28282.

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This research draws upon the writings of Michel Foucault and a range of governmentality texts to problematise those planning techniques and practices promulgated in an attempt to produce particular ideals of community. To accomplish this I have focused predominantly on the discourses pertaining to the Golden Grove Development. The histories I re-construct from these discourses demonstrate how ideals of community have been constituted and how they act as technologies of government. The goals of these governmental technologies, I argue, were the normalisation of particular suburban subjectivities, with the intent to maximise economic gains and minimise financial, temporal, spatial and social risks.
PhD Doctorate

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Princehouse, David S. "Geology and gold mineralization of mesozoic rocks in the Pine Grove Distric, Lyon County, Nevada". Thesis, 1993. http://hdl.handle.net/1957/35956.

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Libri sul tema "Golden Grove"

1

Kress, Nancy. The golden grove. New York: Berkley Books, 1986.

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2

Who lives in Golden Grove? [Bridgend?]: Jady Publications, 1998.

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3

Mayfield, John. Golden Grove: A secondary education complex in South Australia. Paris: Organisation for Economic Co-operation and Development, Programme on Educational Building, 1989.

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4

Das große goldene Buch der Astrologie: Ein praktischer Ratgeber. Erlangen: Karl Müller, 1994.

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5

Kvirkvelii︠a︡, G. T. (Guram Tengizovich) e Chi Jennifer Y, a cura di. Wine, worship, and sacrifice: The golden graves of ancient Vani. Princeton, NJ: Institute for the Study of the Ancient World, in association with Princeton University Press, 2008.

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6

Irena, Grudzińska-Gross, a cura di. Golden harvest: Reflections about events at the periphery of the Holocaust. Oxford: New York : Oxford University Press, 2012.

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7

Oikonomou, Stauroula. Chrysa kai argyra epistomia. Rethymno: Panepistēmio Krētēs, Tmēma Historias kai Archaiologias, Tomeas Archaiologias kai Historias tēs Technēs, 2003.

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8

Big Bird Brings Spring: To Sesame Street. New York, USA: Western Publiching Company, Inc., in conjunction with Children's Television Workshop, 1985.

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9

Selleck, Lee. Dying for gold: The true story of the Giant mine murders. Toronto: HarperCollins, 1997.

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10

Craft, Mary Beth. Golden Grove. Genesis Press, 1999.

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Capitoli di libri sul tema "Golden Grove"

1

Hassan, Haider. "Große Brüder und goldene Regeln – der Kick zur späten Stunde". In Kreativität im Sport, 87–110. Wiesbaden: Springer Fachmedien Wiesbaden, 2016. http://dx.doi.org/10.1007/978-3-658-16183-5_6.

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Baethge, Martin, e Ingrid Wilkens. "„Goldenes Zeitalter“ — „Tertiäre Krise“: Perspektiven von Dienstleistungsbeschäftigung zu Beginn des 21. Jahrhunderts (Einleitung)". In Die große Hoffnung für das 21. Jahrhundert?, 9–19. Wiesbaden: VS Verlag für Sozialwissenschaften, 2001. http://dx.doi.org/10.1007/978-3-663-09717-4_1.

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Bradford, G. E., H. A. Fitzhugh e A. Dowding. "Reproduction and Birth Weight of Barbados Blackbelly Sheep in the Golden Grove Flock, Barbados". In Hair Sheep of Western Africa and the Americas, 163–70. CRC Press, 2019. http://dx.doi.org/10.1201/9780429049118-14.

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Frazer, James George. "Chapter 12 feasts of all souls". In The Golden Bough. Oxford University Press, 2009. http://dx.doi.org/10.1093/owc/9780199538829.003.0027.

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But we have still to consider the Osirian festivals of the official calendar, so far as these are described by Greek writers or recorded on the monuments. The sufferings of Osiris displayed as a mystery at Sais. Herodotus tells us that the grave of Osiris...

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Grewe, Bernd Stefan. "Der große Schmuggel". In Gold, 98–100. Verlag C.H.BECK oHG, 2019. http://dx.doi.org/10.17104/9783406732133-98.

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Wiemer, Hans-Ulrich. "Kapitel IX Ein «goldenes Zeitalter»? Italien unter gotischer Herrschaft". In Theoderich der Große, 397–471. Verlag C.H.BECK oHG, 2018. http://dx.doi.org/10.17104/9783406719097-397.

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"Mother’s inside transformed into a golden grave for the triumphant child". In Long-Term Psychoanalytic Supervision with Donald Meltzer, 224–36. Abingdon, Oxon ; New York, NY : Routledge, 2019. |: Routledge, 2018. http://dx.doi.org/10.4324/9780429436611-26.

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Zapatero Molinuevo, Ane. "“Phantom Ladies” and “Ghost Gallants”: the motif of supernatural lovers in the Spanish golden age theatre". In Visitors from beyond the grave: ghosts in world literature, 159–72. Imprensa da Universidade de Coimbra, 2019. http://dx.doi.org/10.14195/978-989-26-1765-7_11.

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Jarrett, Simon, e Jan Walmsley. "Intellectual disability policy and practice in twentieth-century United Kingdom". In Intellectual Disability in the Twentieth Century, 177–94. Policy Press, 2019. http://dx.doi.org/10.1332/policypress/9781447344575.003.0015.

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In the first half of the twentieth century UK policy, dominated by the passing of the Mental Deficiency Act in 1913, was not driven solely by eugenic discourse but by a commonly held assumption across the ideological spectrum that the ‘mentally deficient’ population needed ‘fixing’ in some way. Lurking beneath this desire for completeness and the tidying up of the social sphere were deep anxieties about urban modernity and human capacity to meet its challenges. In the second half of the century we see the voice of the person with intellectual disability finally emerge as self-advocacy, as the institutions met their end and care in the community became policy. A so-called ‘golden period’ in the 1990s, characterized by thoughtful policy and a commitment to inclusion, raised hopes of genuine citizenship and improved support. The chapter ends however with a cautionary warning from the 21^st century, where gains seem to be receding and the institution rising from its grave.

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Hinton, David A. "Kings and Christianity". In Gold and Gilt, Pots and Pins. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780199264537.003.0008.

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New discoveries play a major part in archaeological research, but coincidence can also have a role. When four copper-alloy scabbard-studs with Style II ornament were excavated in the smith’s grave at Tattershall Thorpe in 1981 (Fig. 2.18), they were the first of their kind to have been found in England, despite being well known on the continent, where they are dated to between 640 and 670. Within a couple of years, however, another set turned up, on a scabbard in a cemetery in Buttermarket, Ipswich, Suffolk. Then, in 1999, yet another set was found, in a grave at the new football stadium in Southampton, Hampshire (Fig. 3.1). These studs adorned scabbards that were not for double-edged swords, but for the single-edged long seax, not a very practical weapon, but one that was probably used in hunting and was therefore redolent of aristocratic practice. At Tattershall Thorpe the studs were not attached to anything, and were presumably going to be shown to a prospective patron with a view to reuse. At Ipswich and Southampton both sets were in cemeteries at what were about to become major trading-places, Gippeswic and Hamwic. These wic sites had continental counterparts and suggest new ways of organizing and systematizing exchanges of goods; others in England were London, Lundenwic, and York, Eoforwic, both former Roman towns, with the wics outside the walls but episcopal churches inside. Neither Ipswich nor Southampton had a major church, so there was no reason for important burials at either unless they were of people involved in the places’ emergence as commercial centres. One explanation is that some of the graves were for kings’ ‘reeves’ and their families, royal agents placed to oversee merchants and to ensure that tolls were paid, who were buried slightly away from where the commerce was to take place. The Southampton cemetery had other signs of an elite presence, such as a woman’s grave that contained a gold pendant with garnets and Style II animals in filigree gold wire on it (Col. pl. C.2), which seems likely to be mid- to later seventh-century.

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Atti di convegni sul tema "Golden Grove"

1

Carey, Hashim, Graham Heinson e Mike Sexton. "Three‐dimensional numerical analysis of downhole applied potential methods: volcanogenic massive sulphide example, Golden Grove, Western Australia". In SEG Technical Program Expanded Abstracts 2003. Society of Exploration Geophysicists, 2003. http://dx.doi.org/10.1190/1.1817979.

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Koizumi, Yasuo, e Shota Yoshizawa. "Study on Drop Wise Condensation by Using Functionalized Heat Transfer Surface". In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37400.

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Condensation heat transfer experiments were performed by using steam at 0.1 MPa The enhancement of drop wise condensation heat transfer by functionalizing a heat transfer surface was examined. A gold-plated surface was used to produce the drop wise condensation. Grooved heat transfer surfaces were adopted to functionalize the heat transfer surface. The shape and the size of the grooves were rectangular and 2 mm × 2 mm × 2 mm, 3 mm × 3 mm × 3 mm and 2 mm × 3 mm × 2 mm (groove depth × groove top part width × groove bottom width), respectively. The heat flux of the grooved surface was larger than that of the plain gold-plated surface. When the groove size was 2 mm × 2 mm × 2 mm and the top parts and the walls of grooves were plated with gold, the heat transfer rate augmentation was highest; the augmentation rate was 1.53. Since to increase the width of the top part of the grooves tends to bring the quality of the surface structure close to the plain surface, to increase the top width of the grooves is not right direction. It was also implied that to make summits and troughs on the surface tends to expose the summit part to steam more, which might result in the heat transfer augmentation.

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Zhang, Jingyi, Xianfeng Gao, Yelin Deng, Yuanchun Zha e Chris Yuan. "Cradle-to-Grave Life Cycle Assessment of Solid-State Perovskite Solar Cells". In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2970.

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With the advantages of low cost and high conversion efficiency, perovskite solar cell attracts enormous attention in recent years for research and development. However, the toxicity potential of lead used in perovskite solar cell manufacturing causes grave concern for its environmental performance. To understand and facilitate the sustainable development of perovskite solar cell, a comprehensive life cycle assessment has been conducted by using attributional life cycle assessment approach from cradle to grave, with manufacturing data from our lab experiments and literature. The results indicate that the major environmental problem is associated with system manufacturing, including gold cathode, organic solvent usage and recycling, and electricity utilization in component manufacturing process. Lead only contributes less than 1% of human toxicity and ecotoxicity potentials in the whole life cycle, which can be explained by the small amount usage of lead in perovskite dye preparation. More importantly, the uncertainties caused by life cycle inventory have been investigated in this study to show the importance of primary data source. In addition, a comparison of perovskite solar cell with conventional solar cells and other dye sensitized solar cells shows that perovskite solar cell could be a promising alternative technology for future clean power generations.

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Yoshizawa, Syota, Sho Ikeda e Yasuo Koizumi. "Study on Controlling Condensation Heat Transfer by Using Functionalized Heat Transfer Surface". In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16160.

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Condensation heat transfer experiments were performed by using steam at 0.1 MPa. The enhancement of drop-wise condensation heat transfer by functionalizing a heat transfer surface was examined. A gold-plated surface was used to produce the drop wise condensation. Grooved heat transfer surfaces were adopted to functionalize the heat transfer surface. The shape and the size of the groove were rectangular and 2 mm × 2 mm × 2 mm, respectively. When the top parts and the walls of grooves were plated with gold, the heat transfer rate was the highest. The second was the case that all area of the grooves was plated with gold. The third was the case that only the top parts of the grooves were plated with gold. The forth was the plain gold-plated surface. The drop wise condensation was enhanced by 2.6 times at the most when the heat transfer surface was divided into two areas that had different functions of condensing (the gold-plated surface) and draining (the copper-bare surface). Condensate drops on the gold-plated surface were pulled into films on the copper-bare surface. It helped to remove the drops on the gold-plated heat transfer surface and to expose the gold-plated heat transfer surface to steam for much longer time.

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5

Promyoo, Rapeepan, Hazim El-Mounayri e Kody Varahramyan. "AFM-Based Nanoscratching: A 3D Molecular Dynamics Simulation With Experimental Verification". In ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/msec2014-4085.

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Abstract (sommario):

In this paper, a developed three-dimensional model for AFM-based nanomachining is applied to study mechanical scratching at the nanoscale. The correlation between the scratching conditions, including applied force, scratching depth, and distant between any two scratched grooves, and the defect mechanism in the substrate/workpiece is investigated. The simulations of nanoscratching process are performed on different crystal orientations of single-crystal gold substrate, Au(100), Au(110), and Au(111). The material deformation and groove geometry are extracted from the final locations of atoms, which are displaced by the rigid indenter. The simulation also allows for the prediction of normal and friction forces at the interface between the indenter and substrate. An AFM is used to conduct actual scratching at the nanoscale, and provide measurements to which the MD simulation predictions are compared. The predicted forces obtained from MD simulation compares qualitatively with the experimental results.

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Qureshi, Ejaz M., Afzaal M. Malik e Naeem Ullah Dar. "Thermo-Mechanical Analysis of Residual Stresses in Arc Welded Thin-Walled Cylinders". In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48431.

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The problem of reduced strength of the structures in and around the weld zone due to the residual stresses in arc welding process is a major concern of the welding industry for decades. The prediction of the transient and residual stress fields during and after the completion of the welding process is of critical importance to ensure the structural integrity of welded structures. Circumferentially welded thin-walled cylinders are widely utilized in many engineering applications including the oil transportation system, boiler and pressure vessel industries. This paper presents a detailed three-dimensional finite element (FE) study to investigate the welding induced residual stresses in circumferentially welded thin-walled cylinders. The complex phenomenon of arc welding is numerically solved by sequentially coupled transient, non-linear thermo-mechanical analysis approach to simulate Gas Tungsten Arc (GTA) Welding process. Single pass butt-welded geometry with single “V” groove for two 300 mm outer diameter cylinders with 3 mm wall thickness and 150 mm length are used in numerical simulations. Temperature dependent thermo-mechanical behavior for low carbon steel is modeled and filler metal deposition by using the element birth and kill features is incorporated. Widely accepted double ellipsoidal GOLDAK heat source model for arc welding is introduced and implemented. Simulation of the entire welding process is accomplished by using author written subroutines in ANSYS®, general purpose FE software. The accuracy of the developed FE simulation strategy is validated with experimentation for temperature distribution and residual stresses.

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Yang, Huan, Jinyou Shao e Ben Q. Li. "Self-Assembly of Ordered SiO2@Au Core-Shell Nanoparticle Arrays". In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36539.

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Abstract (sommario):

This paper presents a wet-based self-assembly process for nano-fabricating 1-D arrays of spherical nanoparticles and/or gold-nanoshells with controllable inter-particle distance for near infrared optical communications and for plasmon polariton waveguides featured with the lateral mode size below the optical diffraction limit. The process entails two main procedures. First, the SiO2 nanoparticle colloidal solution was restricted to flow through the gap between the patterned substrate and the cover slip, and the particles, trapped in the patterned, recessed regions, self-assembled to form closely arranged SiO2 particle arrays. These SiO2 particle arrays then acted as a template with which SiO2@Au nanoshell particle arrays of interest with desirable interparticle distance were obtained by repeating the above procedure with SiO2@Au dispersed solution. The needed high quality SiO2@Au core-shell nanoparticles with tunable surface plasma resonance also were synthesized in our laboratory using the seed-and-grow method. Results show that, with this method, the interparticle distance of the nanoshell particle arrays can be controlled by a proper selection of the patterned groove and the sizes of SiO2 and SiO2@Au nanoshell particles. As demonstrated by experiment, the method is general and can be applied to obtain nanoparticle particle arrays of other materials with controllable distance.

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