Relevant bibliographies by topics / Powley

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Powley'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Powley"

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Dix, Ann. "Interview with David Powley." Dramatherapy 39, no. 1 (March 2018): 49–53. http://dx.doi.org/10.1080/02630672.2018.1427771.

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This interview with David Powley, one of the pioneers of dramatherapy, took place in May 2017 and was conducted by Ann Dix. It is one of a series of interviews where the founders of dramatherapy in the UK are invited to reflect on their experiences and the development of dramatherapy as a profession.
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Kermoal, Nathalie. "La troisième « résistance » métisse de l’Ouest canadien." Recherches amérindiennes au Québec 39, no. 3 (March 23, 2011): 97–106. http://dx.doi.org/10.7202/045807ar.

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Un an après l’arrêt Powley de la Cour suprême du Canada en 2003, l’Alberta négociait un accord intérimaire avec les Métis, leur donnant le droit de chasser sur les terres de la Couronne. Cette victoire sera de courte durée puisqu’à la suite des mécontentements exprimés par les Albertains dans la presse locale ainsi que par certaines associations de chas­seurs, le gouvernement albertain décidait de faire marche arrière en optant pour une politique unilatérale plutôt que pour une politique de négociation. En revenant sur certains points centraux de l’histoire des Métis et sur les événements marquants qui ont touché l’Alberta depuis 2004, le but de cet article est de tenter de mieux comprendre les processus coloniaux insidieux qui sont encore en jeu après l’arrêt Powley ainsi que les stratégies légales et illégales développées par les Métis pour faire avancer leurs droits. Dans la mesure où la réconciliation a laissé place à la résistance en Alberta, on est en droit de se demander si Powley représente réellement le renouvellement d’une relation historique entre les Métis, les différents niveaux de gouvernement au Canada et la population canadienne.
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Sloan, Kerry. "ALWAYS COMING HOME: METIS LEGAL UNDERSTANDINGS OF COMMUNITY AND TERRITORY." Windsor Yearbook of Access to Justice 33, no. 1 (January 29, 2017): 125. http://dx.doi.org/10.22329/wyaj.v33i1.4814.

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Metis ideas of territory are complex, varied and often not well understood. Metis perspectives on intersections of territory and community are likewise not appreciated by Canadian courts. This is evident in the difficulties of Metis rights claimants in British Columbia, where misconceptions about Metis history and traditional use areas have resulted in courts questioning the existence of historic Metis communities in the province. The leading case on Metis rights in Canada, R v Powley, requires claimants to prove there is a historic Metis community in an area where claimed rights are exercised. In BC, courts following Powley in three cases – R v Howse, R v Nunn and R v Willison – have held there are no historic Metis communities in the Kootenays, the south Okanagan, or the Kamloops/Shuswap area. Although these regions comprise only a portion of lands within provincial boundaries, the BC government takes the position there are no Metis communities in the province capable of meeting the Powley test, and thus asserts there can be no Metis Aboriginal rights holders in BC. To challenge this position, and in order to illustrate the multiplicity and richness of Metis legal understandings of territory and community, the author braids family history, narrative, legal analysis and the perspectives of 23 Metis people from the southern BC interior who were involved in or affected by the Howse, Nunn and Willison cases. The author suggests that expansive and nuanced Metis understandings of communities and territories cannot be encompassed by the Powley/Willison definition of a Metis community as “... a group of Métis with a distinctive collective identity, living together in the same geographic area and sharing a common way of life”. While the court’s definition posits history, territory and community as separable, Metis views suggest these concepts are interlinked and mutually constitutive. Les idées des Métis au sujet du territoire sont complexes, diversifiées et souvent mal comprises. Dans la même veine, les tribunaux canadiens ne comprennent pas les points de vue des Métis sur les liens entre le territoire et la communauté. C’est ce qui ressort des difficultés qu’éprouvent les défenseurs des droits des Métis en Colombie-Britannique, où les perceptions erronées au sujet de l’histoire des Métis et des secteurs qu’ils utilisent à des fins traditionnelles ont incité les tribunaux à douter de l’existence de communautés métisses historiques dans la province. Selon l'arrêt clé concernant les droits des Métis au Canada, R. c. Powley, ceux qui revendiquent des droits sont tenus de prouver l’existence d’une communauté métisse historique dans un secteur où les droits revendiqués sont exercés. Dans la foulée de l’arrêt Powley, les tribunaux de la Colombie-Britannique ont conclu, dans les décisions R. c. Howse, R. c. Nunn et R. c. Willison, qu’il n’y a pas de communauté métisse historique dans les Kootenays, dans la région d’Okanagan-Sud ou dans celle de Kamloops/Shuswap. Bien que ces régions ne forment qu’une partie des terres situées à l’intérieur des limites provinciales, le gouvernement de la Colombie-Britannique soutient qu’il n’existe dans la province aucune communauté métisse pouvant satisfaire au critère de l’arrêt Powley, de sorte qu’il ne peut y avoir de titulaires de droits ancestraux métis. Pour affirmer le contraire et illustrer la multiplicité et la richesse des perceptions juridiques du territoire et de la communauté chez les Métis, l’auteur entremêle histoire familiale, récits et analyses juridiques, en plus de présenter les points de vue de 23 groupes de Métis du sud des terres de la Colombie-Britannique qui ont été touchées d’une façon ou d’une autre par les décisions Howse, Nunn et Willison. L’auteur fait valoir que la définition d’une communauté métisse énoncée dans l’arrêt Powley/Willison, soit « un groupe de Métis ayant une identité collectivité distinctive, vivant ensemble dans la même région et partageant un mode de vie commun », ne peut englober les perceptions ouvertes et nuancées des Métis au sujet des communautés et des territoires. Alors que la définition des tribunaux présente l’histoire, le territoire et les communautés comme des concepts distincts, les points de vue des Métis donnent à penser que ces concepts sont interdépendants et mutuellement constitutifs.
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Bériault, Xavier, and Janique Dubois. "Le choc des paradigmes en études métisses depuis l'arrêt Powley." Canadian Journal of Political Science 53, no. 3 (September 2020): 695–715. http://dx.doi.org/10.1017/s0008423920000268.

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RésuméDepuis l'arrêt Powley de la Cour suprême du Canada en 2003, les études métisses se sont fortement politisées dans la mesure où les conclusions des chercheurs qui servent d'experts dans les causes portées devant les tribunaux ont le potentiel d'avoir une influence concrète sur les jugements rendus. Cet article cartographie les réseaux intellectuels formés par les publications en études métisses à partir d'une analyse de réseaux qui utilise le logiciel UCINet. Notre analyse révèle la présence de deux paradigmes distincts qui proposent des conceptions opposées de l'identité métisse. D'une part, les chercheurs du paradigme de l'hybridité présentent le Métis comme étant issu d'une ascendance mixte. D'autre part, les chercheurs du paradigme de l'ethnogenèse conçoivent le Métis comme appartenant à une nation autochtone distincte. Notre analyse des réseaux en études métisses met en lumière les relations de pouvoir qui animent les débats politiques, juridiques et culturels sur l'identité métisse.
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Chartrand, Paul L. A. H. "THE HARD CASE OF DEFINING “THE MÉTIS PEOPLE” AND THEIR RIGHTS: A COMMENT ON R. V. POWLEY." Constitutional Forum / Forum constitutionnel 12, no. 1, 2 & 3 (July 24, 2011): 2002. http://dx.doi.org/10.21991/c98d5g.

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Section 35(2) of the Constitution Act, 1982 refers to “the Métis people” as one of the Aboriginal peoples of Canada whose existing Aboriginal and treaty rights are guaranteed by section 35(1).1 The subsequent First Ministers Conference on Aboriginal Constitutional Reform in the 1980s and the Charlottetown Accord in 1992 proved inadequate to the task of addressing the substantive content of these constitutional provisions. The unenviable task of defining a people and their rights has now fallen to the courts. The challenge facing them is the hard case of Canadian Aboriginal law.
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Briggs, Roger. "Treatment development strategies for Alzheimer's disease. Edited by CROOKet al. Mark Powley Associates Inc., Madison, Connecticut. Pages: 699. 1986." Human Psychopharmacology: Clinical and Experimental 3, no. 4 (December 1988): 302. http://dx.doi.org/10.1002/hup.470030412.

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Olthuis, Brent. "The Constitution’s Peoples: Approaching Community in the Context of Section 35 of the Constitution Act, 1982." McGill Law Journal 54, no. 1 (October 1, 2009): 1–43. http://dx.doi.org/10.7202/038177ar.

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Abstract Modern negotiations between the Crown (or private parties) and Canada’s Aboriginal peoples are largely based on the legal principles articulated in major court decisions. Yet those decisions have not yet confronted a fundamental question: how, in the first instance, do we determine which groups can lay claim to the Aboriginal and treaty rights “recognized and affirmed” by section 35 of the Constitution Act, 1982? The author argues that this question ought to form the theoretical cornerstone of the doctrine of Aboriginal and treaty rights. It is also of critical significance to the continuing process of reconciliation between the Aboriginal and non-Aboriginal elements of Canadian society. The interlocutors in this process must be identifiable. The community recognition needed to give effect to section 35’s inherently group-centred approach cannot be purely subjective or purely objective in nature. Neither a process of unilateral declaration nor one of pure observation can accurately identify the communities at issue under section 35. Rather, the inquiry requires an exercise of interpretation. To this end, the author proposes guidelines to focus and assist the interpretive process. This analysis ultimately entails a reconsideration of some of the prevailing orthodoxies in Aboriginal law jurisprudence, including the “test” for determining the existence of Aboriginal rights (from R. v. Van der Peet) and the notion that an individual member of a modern, rights-holding, Aboriginal community must prove an ancestral or genealogical link to a member of the group at some earlier time (from R. v. Powley).
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Biley, Francis. "The arts in medical education a practical guideThe arts in medical education a practical guide Elaine Powley Higson Roger Radcliffe 140pp/CD £40 1 85775 626 6 1857756266." Nursing Standard 20, no. 26 (March 8, 2006): 27. http://dx.doi.org/10.7748/ns.20.26.27.s34.

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Rivard, Étienne. "Les sentiers battus de l’ethnogenèse métisse au Québec." Francophonies d'Amérique, no. 40-41 (March 8, 2018): 185–211. http://dx.doi.org/10.7202/1043703ar.

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Avec la reconnaissance en 2003 des droits autochtones de la communauté métisse de Sault-Sainte-Marie, en Ontario, partie intégrante de l’espace francophone historique ontarien, la Cour suprême du Canada a créé une onde de choc ressentie tous azimuts à l’échelle du pays. Non seulement cette décision a-t-elle encouragé la mobilisation métisse et engendré une pléiade de causes juridiques nouvelles, elle a aussi profondément bouleversé l’image du Métis aux yeux des Canadiens – laquelle image collait jusque-là essentiellement aux provinces de la Prairie – et jette ainsi un éclairage nouveau sur les phénomènes culturels et migratoires qui peuplent l’histoire de la francophonie canadienne. Pourtant, cette décision n’est rien d’autre que la reconnaissance juridique de plusieurs décennies de recherche fondamentale en ethnogenèse, un champ d’études justement né du besoin de traiter cette « myopie de la rivière Rouge » qui affectait les études métisses depuis longtemps. À la suite de ce jugement, on assiste toutefois à un changement de situation qui n’est pas sans soulever quelques inquiétudes. Dans les cours de justice, la recherche fondamentale est largement remplacée par une démarche scientifique qui vise avant tout à répondre à ce qu’on appelle maintenant le « test Powley ». La communauté de Sault-Sainte-Marie est en quelque sorte devenue le modèle métis par excellence, faussant ainsi largement la vision de la diversité du fait métis et, avec lui, de la francophonie. C’est sur ces prémisses que s’appuie le regard critique que nous posons ici sur l’intégration récente des études métisses dans l’univers juridique. Nos arguments reposent en bonne partie sur notre expérience en tant que témoin expert pour les intimés dans la cause Corneau au Saguenay–Lac-Saint-Jean.
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Phillips, Robert J., and Terry L. Powley. "Gastric volume detection after selective vagotomies in rats." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 274, no. 6 (June 1, 1998): R1626—R1638. http://dx.doi.org/10.1152/ajpregu.1998.274.6.r1626.

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Rats receiving intragastric infusions of 2.5, 5.0, 7.5, or 10.0 ml of normal saline while their pylori are reversibly occluded suppress meal size to the smallest infusion and display a dose-dependent reduction across volumes [Phillips, R. J., and T. L. Powley. Am. J. Physiol. 271 ( Regulatory Integrative Comp. Physiol.40): R766–R779, 1996]. To evaluate the contributions of the vagus to this detection of gastric volume, groups prepared with different selective vagotomies and equipped with pyloric cuffs and gastric catheters were tested. Liquid diet consumption during a 30-min feeding bout was measured after infusions of 5.0 and 10.0 ml of normal saline on cuff-open and cuff-closed trials. Consistent with earlier observations, sham animals with cuffs closed exhibited volume-dependent suppression of food intake to the infusions, and completely vagotomized animals did not inhibit feeding in response to the loads. In cuff-closed trials, the suppression function slopes of the selective vagotomy groups were intermediate to those of the shams and the completely vagotomized animals. Furthermore, for the different groups, the extent of suppression after vagotomy was proportional to the density of the afferent innervation respective branches supplied to the stomach. Specifically, the group with the gastric branches spared (nonsignificantly attenuated in comparison to shams) and the group with only the hepatic branch spared (significantly attenuated with respect to shams) both still exhibited significant dose-dependent suppression slopes (compared with completes), whereas the group with only celiac branches spared was not significantly different from completely vagotomized animals. In sum, the vagus nerve mediates the detection of the gastric volumes tested, and the different branches of the vagus make distinctive contributions to this afferent feedback.
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Dissertations / Theses on the topic "Powley"

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Lauzer, Shawn. "Fighting the War Within: A Look at Ontario Metis Life and the Creation of a New Standard Post-Powley." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23331.

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In Canada today there exists a new form of segregation towards the Métis people, called the Powley points. Because of it, Métis are being forced to become a different version of themselves, counter to their own personal identity, thereby creating a new standard of identity for Métis, one that not all Métis are able to meet because of historical factors. What the research shows is an over representation of Western Métis politics regarding Métis identity and the formation of it. I therefore, propose a change to the current status quo regarding how Métis are defined and how they are expected to define themselves within this system. For this thesis I rely primarily on archival research and textual analysis, such as journal articles, census data, and published material from the Métis organizations, to establish the current situation in Métis politics as well as my position regarding these issues.
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Ondreášová, Klára. "Stanovení vybraných perfluoroalkylových sloučenin v komplexních matricích." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217004.

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Diploma work focuses on the determination of selected representatives of perfluoroalkyl substances in complex matrices, particularly, in sewage sludge and feed. In case of sewage sludge, samples were extracted into methanol and three extractions techniques were compared: accelerated Soxhlet, pressurized liquid extraction and Powley method. Powley method showed sufficient efficiency, the lowest matrix effect and minimal background. Perfluorooctane sulfonate was present in all tested samples of sewage sludge (0.74–38.02 ng.g-1). Other detected compounds were perfluorodecanoic acid and perfluorooctanoic acid. Three extraction techniques were tested on feed samples (QuEChERS, fast methanol extraction and Powley method into acetonitrile). Powley method provided the cleanest extracts and showed simultaneously the highest recovery of native perfluoroalkyl substances and the lowest matrix effects. Perfluorooctane sulfonate and perfluorooctanoic acid were rarely present in samples of complete and supplemental feeds, while other perfluoroalkyl substances were found at levels below limit of quantification or they were not detected at all. Perfluorooctane sulfonate (0.100–2.768 ng.g-1), perfluoroundecanoic acid and perfluorotridecanoic acid were determined in all fish meal samples.
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Dhavale, Tushar. "Low power laser sintering of iron powder." Thesis, University of the West of England, Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522529.

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Funk, Lyell. "Beyond the Powels: Alternative Narratives as Primary Solutions for the Powel House." Master's thesis, Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/314818.

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History
M.A.
Philadelphia is a city that constantly gazes back toward its eighteenth-century past. Many of its historic sites rely on legends from the era of the American founding fathers in order to attract visitors. The Powel House, an historic house museum that was once the home of Philadelphia's last colonial and first post-revolutionary mayor Samuel Powel, fits into this category. Yet for The Philadelphia Society for the Preservation of Landmarks, the consortium that manages the Powel House, there is a pressing need for an expanded audience and increased funding, and the story of the Patriot Mayor does not provide enough fuel to achieve these goals. This essay examines some of the Powel House's lesser-known narratives. It suggests that for historic house museums such as the Powel House that are bound to constricted historical eras, an exploration of the house's entire history is a route toward uncovering new strategies for audience engagement. The essay isolates three specific narratives from the early twentieth century, and contemplates how each individual story can be leveraged for Landmarks' broader goals.
Temple University--Theses
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Do, Tung Van. "Optimal operation of a hydroelectric reservoir." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26694.

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This thesis examines the influence of different degrees of serial correlation in the streamflow records on optimal operation of a hydroelectric reservoir. This thesis also investigates the practical aspects of choosing different decision variables, considering effects on ease of implementation, total benefit, and actual use for real-time operations. Stochastic dynamic programming was used to optimize the long-term operation of a hydroelectric project with a single reservoir. Reservoir inflows were analyzed using monthly flow record for 58 years with the assumption that monthly inflows are either perfectly correlated, uncorrelated, or partially correlated. Reservoir level change and powerhouse discharge were considered as alternative decision variables for each of the three cases of inflow serial correlation. The optimization results were then examined and compared to determine the significance of the choice of decision variables and to explore the effects of inflow serial correlation on practical operating decisions which might be based on the results of the optimization. It was found that (1) Case 2 in which inflows were assumed perfectly correlated and Case 3 with partially correlated inflows produce, respectively, highest and lowest total expected return, (2) the difference in total expected return between cases depends largely upon the physical characteristics of the system, (3) the reservoir level change decision case produces more conservative results than the discharge decision case, (4) the results from the reservoir level change decision are easier to use for realtime operation than those from the discharge decision case, (5) different results will be produced with different choice of decision variables.
Applied Science, Faculty of
Civil Engineering, Department of
Graduate
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Powell, Scott Lael. "Conifer cover increase in the Greater Yellowstone Ecosystem : rates, extent, and consequences for carbon." Diss., Montana State University, 2004. http://etd.lib.montana.edu/etd/2004/powell/PowellS1204.pdf.

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Ebune, Guilbert Ebune. "Carbon Dioxide Capture from Power Plant Flue Gas using Regenerable Activated Carbon Powder Impregnated with Potassium Carbonate." Connect to resource online, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1221227267.

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Abonadi, Earl E. K. "Weinberger-Powell and transformation : perceptions of American power from the fall of Saigon to the fall of Baghdad /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Jun%5FAbonadi.pdf.

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Powell, Allison L. "Database selection in distributed information retrieval a study of multi-collection information retrieval /." Full text, Acrobat Reader required, 2001. http://viva.lib.virginia.edu/etd/diss/SEAS/ComputerScience/2001/Powell/etd.pdf.

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Powell, Brian Keith. "Rawls on stability, democracy, and justice." Full text, Acrobat Reader required, 2002. http://viva.lib.virginia.edu/etd/masters/ArtsSci/Philosophy/2002/Powell/thesis.pdf.

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Books on the topic "Powley"

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Colin Powell: American power and intervention from Vietnam to Iraq. Lanham, MD: Rowman and Littlefield, 2009.

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Powder Coating '92 (1992 Cincinnati, Ohio). The power of powder: Conference proceedings, Powder Coating '92, October 6-8, 1992, Cincinnati Convention Center, Cincinnati, Ohio. Alexandria, VA (1800 Diagonal Rd., Suite 370, Alexandria 22314): The Institute, 1992.

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Powell. Charleston, SC: Arcadia Pub., 2009.

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Johnston, Jeremy M. Powell. Charleston, SC: Arcadia Pub., 2009.

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Johnston, Jeremy M. Powell. Charleston, SC: Arcadia Pub., 2009.

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Kneale, Matthew. Powder. London: Picador, 2005.

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Rowene, Weems, ed. POWELL. Charleston, South Carolina: Arcadia Publishing, 2012.

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Raṇavaka, Pāṭhalī Campika. Power and power. Colombo: Patali Champika Ranawaka, 2014.

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Thomas, Karyn L. Powder metallurgy. Norwalk, CT: Business Communications Co., 1991.

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Mara, Wil. Colin Powell. New York: Children's Press, 2003.

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Book chapters on the topic "Powley"

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Bährle-Rapp, Marina. "powder." In Springer Lexikon Kosmetik und Körperpflege, 447. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_8390.

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Williams, Lea E. "Adam Clayton Powell Jr.: The Uses and Abuses of Charismatic Power." In Servants of the People, 123–40. New York: Palgrave Macmillan US, 2009. http://dx.doi.org/10.1007/978-1-137-06635-0_7.

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Williams, Lea E. "Adam Clayton Powell Jr.: The Uses and Abuses of Charismatic Power." In Servants of the People, 123–40. New York: Palgrave Macmillan US, 1996. http://dx.doi.org/10.1007/978-1-349-61458-5_7.

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Speleers, Hendrik, Paul Dierckx, and Stefan Vandewalle. "On the Local Approximation Power of Quasi-Hierarchical Powell-Sabin Splines." In Mathematical Methods for Curves and Surfaces, 419–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11620-9_27.

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Cui, Zheng. "Powder Blasting." In Encyclopedia of Microfluidics and Nanofluidics, 2824–27. New York, NY: Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-5491-5_1282.

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Herrera Ramirez, Jose Martin, Raul Perez Bustamante, Cesar Augusto Isaza Merino, and Ana Maria Arizmendi Morquecho. "Powder Metallurgy." In Unconventional Techniques for the Production of Light Alloys and Composites, 33–48. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48122-3_3.

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Horst, R. Kenneth. "Powdery Mildews." In Westcott's Plant Disease Handbook, 285–93. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-2141-8_40.

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Kearsley, Malcolm W., and Ronald C. Deis. "Maltitol Powder." In Sweeteners and Sugar Alternatives in Food Technology, 295–308. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118373941.ch13.

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Wilson, David, Ron Roberts, and John Blyth. "POWDER COMPACTION." In Chemical Engineering in the Pharmaceutical Industry, 203–25. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2019. http://dx.doi.org/10.1002/9781119600800.ch59.

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Courard, Luc, Duncan Herfort, and Yury Villagrán. "Limestone Powder." In RILEM State-of-the-Art Reports, 123–51. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70606-1_4.

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Conference papers on the topic "Powley"

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Bowman, Charles F. "The Oriented Spray Cooling System for Supplementing Cooling Lakes." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3011.

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With ever-increasing ambient temperatures many electric power plants that employ cooling lakes to reject their waste heat into the environment are struggling to maintain reasonable turbine backpressures during the hot summer months when electric load demand is often the greatest. Some consider adding mechanical draft cooling towers (MDCT) to further cool the condenser circulating water (CCW) prior to entering the main condenser, but the additional auxiliary power required to drive MDCT fans often consume the additional generator output resulting from the lower backpressure. Spray ponds offer significant advantages over MDCT including superior simplicity and operability, lower power requirements, and lower capital and maintenance costs. The Oriented Spray Cooling System (OSCS) is an evolutionary spray pond design. Unlike a conventional spray pond in which spray nozzles are arranged in a flat bed and spray upward, blocking the ambient air flow to the spray region as it travels down to the pond below, the OSCS nozzles are mounted on spray trees arranged in a circle and are tilted at an angle oriented towards the center of the circle. As a result, the water droplets drag air into the spray region while the warm air concentrated in the center of the circle rises. Both of these effects work together to increase air flow through the spray region. Increased air flow reduces the local wet-bulb temperature (LWBT) of the air in the spray pattern, promoting heat transfer and more efficient cooling. During the late 1970’s the author developed a purely analytical model to predict the thermal performance of the OSCS which was successfully compared with the OSCS at the Columbia Generating Station (CGS) in the mid 1980’s. This paper describes how the OSCS may be employed to supplement the cooling capacity of an existing cooling lake to reduce the temperature of the CCW prior to entering a power plant, resulting in lower main condenser pressures and more net plant output.
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Chudnovsky, B., M. Reshef, and A. Talanker. "Evaluation of Methanol and Light Fuel Oil Blends Firing at a 50 MW Gas Turbine." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3018.

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Emissions reduction requirements lead to modification of the firing system to control NOx emission reduction, and/or the post combustion treatment of the flue gas to remove NOx, SO2 & particulates. It has also leads to installation of new renewable energy production systems. All of these measures are very expensive both in installation and operation costs, while utilities are looking for low cost options with a minimum impact on unit performance and reliability. Firing of methanol and its blends with other liquid fuels, in comparison with other renewable sources, is one of the main alternatives for meeting this target. Methanol is a clean burning fuel that is made from non-petroleum energy sources such as natural gas, coal, biomass and carbon dioxide. Using CO2 for methanol production leads to reducing of greenhouse gas emissions so that methanol can actually be called as enviro fuel. The blending of methanol with light fuel oil is one of the quickest and cheapest means for both replacing costly petroleum energy consumed in the existing power generation fleet and reducing emissions that lead to air pollution such as nitric oxides, carbon monoxide, air toxics and PM. Hence, methanol is a good candidate as an alternative fuel for power generation, since it is liquid and has several physical and combustion properties similar to fuel oil. For this reason, this study is aimed to evaluate gas turbine performance and emissions characteristics for different blends of methanol and light fuel oil. The results obtained from simulation of different light fuel blends were compared to those of actual burning. In this study we experimented with methanol fractions (from 0 to 100 % by heat) at different GT loads and found that the methanol and light fuel oil blends enabled us to significantly reduce NOx emissions with increasing of the methanol fraction. SO2 emissions were also reduced according to the methanol heat fraction. The final blend ratio optimization should be based upon environmental requirements and fuel price. CO emissions are slightly higher than the required level. Based on performed tests, the main reason for CO formation is high excess air, especially at partial loads and as a result of low combustion temperature (this conclusion is right for any fuel and its blends). In order to reduce CO emissions, proper air /fuel control is necessary (IGV, IBH etc). This conclusion is very important for conceptual design of gas turbines in general and particularly for GT conversion to methanol firing. Firing of methanol and its blends had no impact on GT performance and provides safe operation. The computer simulations provide support for these experimental findings and conclusions. The results of the performed tests analysis indicate that methanol firing is a potentially promising low cost technology for emissions’ reduction and may be implemented in existing and new gas turbines.
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Xiaofeng, Xiang. "Pilot Experimental Study of New Urea Hydrolysis for DeNOx in Coal Plant." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3021.

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Based on the domestically developed urea hydrolysis reactor and urea hydrolysis ammonia process, a pilot test of urea hydrolysis was established with 10kg/h ammonia production for the flue gas denitration reductant, to reduce pollution of NOx emission from coal plant and avoid the environmental risk of liquid ammonia.The results show that urea hydrolysis reaction rate was controlled by the temperature monotonically. Steam consumption increases with the increase of pressure, especially when pressure is greater than 0.6 MPa and bring about lower economy. The higher feed concentration, the lower energy loss for the water latent heat of vaporization, and the lower operation cost of device. The maximum ammonia production is 16 kg/h, the hydrolysis conversion is greater than 98%, and the ammonia mass fraction of product gas is 22.6–34% (volume fraction of 28.5–48.0%) during the tests, at the feed concentration of 40–60%, the operating pressure and temperature of 0.6MPa and 160°C.
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Oki, Yuso, Hiroyuki Hamada, Makoto Kobayashi, Isao Yuri, and Saburo Hara. "Development of High-Efficiency Oxy-Fuel IGCC System." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3024.

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Coal is regarded as important fuel because of its stable supply and low price, but coal is blamed for its CO2 emission. Japanese utilities are making efforts to improve thermal efficiency and to expand biomass co-firing. On the other hand, CCS technologies are under development as a countermeasure for global warming and demonstration projects planned in several power stations are announced in world wide. As CO2 capture from power station requires huge in-house power, thermal efficiency is deteriorated. To make a breakthrough, NEDO started a project to develop the high-efficiency oxy-fuel IGCC system. This system recirculates gas turbine exhaust gas to both gasifier and gas turbine combustor. Recirculated exhaust gas is used both to feed pulverized coal to gasifier and to dilute syngas in gas turbine combustor. The target efficiency is 42% at HHV basis, equivalent to state of the art coal-fired power station. Various studies were done to confirm the concept of this system and to develop fundamental technologies necessary for the system since 2008 to 2014 as NEDO project. Based on the achievements, the project made another step since 2015 as a five-year joint NEDO project with MHI and MHPS. This paper introduces the latest status of this project executed by CRIEPI by referring several related papers.
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Feng, Weizhong. "A High Efficiency Coal-Fired Power Technology With Elevated and Conventional Turbine Layout." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3035.

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The bottlenecks which in developing high-efficiency Ultra Super Critical (USC) coal power technology is analyzed under the background of great pressure of reducing CO2 emission on coal power industry. The development of 700°C Advanced Ultra Super Critical (A-USC) technology has been much slower than expected mainly due to the material limitations. Double reheat systems increase the efficiency at the cost of significant increases in expense and complexity. A cross compound unit with an elevated and conventional turbine layout greatly shorten the expensive high-temperature piping, significantly cutting the piping costs as well as reduce pressure drops and heat losses which increase the efficiency and the performance-price ratio of the power unit. Engineering study demonstrates the feasibility and advantages of this design. Existing 600 °C materials and equipment manufacturing capabilities were applied to the double reheat unit with the elevated and conventional turbine-generator layout, and adding other mature energy-saving technologies which had succeed in Shanghai Waigaoqiao No.3 Power plant to achieve a net efficiency of 49.8% (6849Btu/kWh, Lower Heating Value (LHV)). Combined with a series of innovative technologies that can improve the operating efficiency and keep the efficiency from decreasing, the annual net efficiency can achieve 48.8% (LHV). This efficiency level is high enough to meet the strict CO2 emission standard (636g/kWh) issued by Environmental Protection Agency (EPA) of the USA, showing significant demonstration of reducing CO2 emission.
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Chudnovsky, B., L. Levin, A. Talanker, A. Kunin, J. Cohen, R. Harpaz, and J. Karni. "Advanced Power Plant Concept With Application of Exhaust CO2 to Liquid Fuel Production." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3037.

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Today there is a growing concern about the ramifications of global warming resulting from the use of fossil fuels and the associated carbon dioxide emissions. Oxy-fuel combustion is a promising response to this issue, since the product of the combustion is a CO2 rich flue gas, which requires no further separation from other emission gases and thus can be sequestrated, or utilized. Here we present an analysis of a novel technology for combining oxy-fuel combustion with utilization of the CO2 rich flue gas for syntetic fuel production. The technology concept involves a new method of using concentrated solar energy for the dissociation of carbon dioxide (CO2) to carbon monoxide (CO) and oxygen (O2). Simultaneously, the same device can dissociate water (H2O) to hydrogen (H2) and oxygen (O2). The CO, or the mixture of CO and H2 (called Syngas), can then be used as a gaseous fuel (e.g. in power plants), or converted to a liquid fuel (e.g. methanol), which is relatively easy to store and transport, and can be used in motor vehicles and electricity generation facilities. The oxygen produced in the process can be used in oxy-fuel combustion or other advanced combustion methods in power plants. In this study it is assumed that a typical sub-critical, 575 MW, coal firing power plant is converted to oxy-fuel combustion. The flue gases from that power plant are then used as raw material for fuel production. The aim of the study is to estimate the optimal conceptual design of a power generation plant, including liquid/gaseous fuel generation facility. In the present study we used a series of special models for simulating the heat balance, heat transfer, performance and emissions of an oxy-fuel converted utility boiler. We also employed cycle simulation software that facilitates the optimization of an electricity generation plant with CO2 conversion to liquid fuel and usage of the fuel produced from CO2 for additional electricity production. The simulation results show that the amount of fuel produced, additional power generated and power station self consumption may be changed over a wide range, depending on the size of the solar field, which provides the energy for the liquid fuel production. The paper includes an overview of some of the key technical considerations of the new concept of CO2 conversion to fuel. Based on the obtained results it may be concluded that the methodology presented in this study is an attractive option for CO2 emission reduction, which can be implemented in existing and/or new power generation units. The technology proposed in this paper is not indented as an alternative for replacing coal combustion with natural gas, however may be used effectively with oxy-fuel combustion of either coal or natural gas.
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Kumar, Nikhil, David Rogers, Thomas D. Burnett, Eric Sullivan, and Martin Gascon. "Reliability, Availability, Maintainability (RAM) for Wind Turbines." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3045.

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Wind based electric generation is one of the fastest growing energy sources in the world. With rapid development of wind farms, many challenges have emerged with respect to the reliability and availability of the in-service equipment. Additionally, with increasing size of wind turbine blades, both onshore and offshore, the serviceability and maintainability of the equipment poses its own unique challenge. There is also an inherent risk from the economics of energy production, which dictates that low-cost manufacturing methods are employed to produce cost-effective machines. In our experience, there are additional risks associated with supply chains and limited availability and understanding of damage mechanisms and reliability data of the myriad manufacturers and models of turbines, blade design and associated equipment. Failure of different components results in different outage times and therefore impact operational and maintenance (O&M) costs in different ways. Achieving high availability targets requires a robust O&M plan. The authors will highlight operational risks of large wind turbines and methodologies to improve reliability and availability for wind farms.
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EL-Seesy, Ahmed I., Ali K. Abdel-Rahman, Hamdy Hassan, Shinichi Ookawara, and Meshack Hawi. "Investigation of the Performance of a Diesel Engine Fueled by Biodiesel-Diesel Fuel Mixture With Addition of Nanoparticles." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3055.

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The current work presents the results of an experimental study that is conducted to investigate the effect of nanoparticles added to biodiesel-diesel fuel mixture. Nano-biodiesel-diesel mixture fuels were prepared by adding of multi-walled carbon nanotubes (MWCNTs). These nanoparticles were blended with biodiesel-diesel fuel in varying mass fractions using an ultrasonic stabilization. A diesel engine test rig was used to examine the effect of nanoparticles on engine performance and emission characteristics with a constant speed of 2500 rpm and different engine loads. The engine test results indicated that the biodiesel-diesel fuel blend slightly decreased the engine performance and increased its emission characteristics at all tested engine operating conditions. The use of nanoparticles was found to improve all engine performance parameters. Specifically, the maximum emission reduction was obtained at a dose level of 20 mg/l, where considerable emission reduction was observed; NOx by 14 %, CO by 30 %, and UHC by 34 %. Also, the best of both engine combustion characteristics and performance were reached at a dose level of 40–50 mg/l. Where the reduction in the brake specific fuel consumption was by 16 %, the increase in both the cylinder peak pressure Pmax, and maximum gross heat release rate dQg/dθmax. were 4 % and 1%, respectively. Finally, the recommended dose level to achieve a significant enhancement in all engine performance is 40 mg/l.
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Behera, Sushanta Kumar, S. Chakraborty, and B. C. Meikap. "Upgradation of Low Grade Coal to High Quality Coal by Chemical Beneficiation Technique." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3057.

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Low rank or grade coals (LGC) are widely distributed over the world. Coal plays a vital role in the global energy demand especially through power generation and it mitigates the energy poverty. The major challenges by the utility of coal as regarding to energy security, a risk of climate change, and increasing of the energy demands are the main portfolio to develop the advanced technology for coal beneficiation. The gradual depletion of high quality coal and cost effective which become a significant issue for power generation while the low grade coals were served as low cost fuel and as an alternative energy security issue. In current research the low grade coal (>35% ash) has been upgraded to higher grade (<10%) by chemical cleaning method. The low grade coal was selected from Mahanadi Coalfields Limited, Odisha, India. Each test was conducted of 50 g coal (250 μm particle size) with 40% NaOH at 100 °C for 3 h and followed with 20% of H2O2, H2SO4, HCl, and HF acids at similar conditions. The research study revealed that ash content (mineral matter) of coal is reduced to >70% by NaOH followed HF treatment as compared to other solvents. The greater liberation of mineral results increases the ash reduction from low grade coal because mineral associated in the coal matrix may formed elution by the leaching effect. The greater extent of demineralization was caused due to the high affinity of OH− and F− with minerals in the coal matrix. The characterization of pre and post treatment coal and coal ash was investigated by the FESEM, XRF and XRD analysis. Overall the current research study challenges the chemical cleaning of low grade coal has been efficient techniques for reducing the minerals to a certain limit.
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Fan, Chenghao, Dongsheng Pei, Xiang He, Wentai Zhou, and Zengtao Wei. "A Modified Master Cycle Off-Design Performance and Heat Rate Improvement Optimization." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3063.

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Coal-fired power generation will continue to be the cornerstone of China’s energy sources in the coming decades and advanced ultra-supercritical technology is the future of coal-fired power generation. This paper selects double reheat cycle design for study and incorporates back pressure extraction steam turbine (BEST) into current cycle design, which used to drive boiler feed water pump and feed regenerative heaters. This design prevailed in US in 1960s and gradually was replaced by condensing turbine due to less efficiency benefits at subcritical steam condition. Reinvention of BEST design in current double reheat cycle is an evitable choice, because the efficiency advantage is improved at USC steam condition. BEST configuration incorporated into current double reheat cycle and advanced cycle is developed to compare with other two conventional systems in this study. Thermodynamic simulation at design and off-design condition shows that BEST configuration has an obvious efficiency advantage at design load, but the advantage decreases at partial load. BEST expansion line and reheat pressure is integrated in cycle heat rate optimization. Genetic algorithm is chosen to implement the optimization and exergy analysis method is utilized to evaluate BEST expansion line optimization results. Finally, BEST design limitation and future work is practically concluded.
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Reports on the topic "Powley"

1

Lange, Fred F. Mechanics of Powder Plastic Powder Compacts. Fort Belvoir, VA: Defense Technical Information Center, January 2001. http://dx.doi.org/10.21236/ada392070.

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Kolman, David Gary. Automated Powder Dispenser. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1186045.

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Tennery, V. (Ceramic powder characterization). Office of Scientific and Technical Information (OSTI), October 1988. http://dx.doi.org/10.2172/5651036.

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4

Copley, John R. D. Neutron powder diffraction. Gaithersburg, MD: National Institute of Standards and Technology, 1998. http://dx.doi.org/10.6028/nist.ir.6204.

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Janney, M. A. Advanced powder processing. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/494128.

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Crosbie, G. (Ceramic powder processing). Office of Scientific and Technical Information (OSTI), October 1988. http://dx.doi.org/10.2172/5421064.

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Jacob, Gregor, Christopher U. Brown, M. Alkan Donmez, Stephanie S. Watson, and John Slotwinski. Effects of powder recycling on stainless steel powder and built material properties in metal powder bed fusion processes. Gaithersburg, MD: National Institute of Standards and Technology, February 2017. http://dx.doi.org/10.6028/nist.ams.100-6.

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Author, Not Given. TEP Power Partners Project [Tucson Electric Power]. Office of Scientific and Technical Information (OSTI), February 2014. http://dx.doi.org/10.2172/1123882.

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Roy, Kaushik. Power Estimation and Synthesis for Low Power. Fort Belvoir, VA: Defense Technical Information Center, August 2002. http://dx.doi.org/10.21236/ada416232.

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Somerville, Shauna C. Powdery Mildew Disease Resistance. Office of Scientific and Technical Information (OSTI), August 2010. http://dx.doi.org/10.2172/1123169.

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