Relevant bibliographies by topics / Brazier phenomena

Academic literature on the topic 'Brazier phenomena'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Brazier phenomena"

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Saida, Kazuyoshi, Woo Hyun Song, and Kazutoshi Nishimoto. "Laser Brazing Phenomena of Heat-Resistant Alloys with Precious Brazing Filler Metals." Materials Science Forum 539-543 (March 2007): 4053–58. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.4053.

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The diode laser brazing of heat-resistant alloys with precious brazing filler metals has been conducted using the tandem beam consisted of preheating beam and main brazing beam. The 1mm thick plates of Inconel 600 and A286 alloys were butt-brazed with the 0.5mm diameter Au-18%Ni, Ag-10%Pd and Ag-21%Cu-25%Pd filler metals using a brazing flux. The sound butt joints which were free from brazing defects such as porosity and lack of penetration could be obtained at the brazing clearances of 0.1-1.5mm. Fracture strength of braze joints using Au-Ni and Ag-Cu-Pd filler metals was comparable to the base metal strength at any brazing clearance between 0.1-1.5mm, whereas that using Ag-Pd filler metal increased with decreasing the brazing clearance and attained about 70% of the base metal strength at brazing clearance of 0.1mm. The computer simulations of the braze metal flowing and the base metal erosion suggested that the preheating effect during the tandem beam brazing resulted in the superior brazability at the narrow-gap as well as wide-gap brazing attributed to the improvement in the wetting, spreading, infiltrativity and the erosion resistance of melted filler metal.
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Mehrizi, S., A. M. Hadian, A. Hadian, and A. Vosughi. "Interfacial Phenomena in Brazing of a Stainless Steel Face Sheet to a Honeycomb Core." Advanced Materials Research 83-86 (December 2009): 1236–42. http://dx.doi.org/10.4028/www.scientific.net/amr.83-86.1236.

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One of the difficulties in manufacturing of sandwich honeycomb structures is the proper joining of honeycomb cores to face sheets. In this investigation, vacuum brazing process using BNi-2 brazing alloy was applied for these types of joints. Brazing cycles were performed at temperatures ranging from 1020 to 1050oC under different holding times ranging from 5 to 20 min. Three different zones were observed in the solidified braze layer. The width of each zone was altered by brazing cycle. The results showed the crucial role of boron element in the brazing alloy in wetting behavior and final products after brazing. The optimum brazing cycle was found to be 1020oC and 5 min holding time followed by heat treating the brazed samples at 600oC for 6 hrs.
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Fadelan, Fadelan, Yoyok Winardi, and Wawan Trisnadi Putra. "Study Experimental Joining Dissimilar Metal of Cemented Carbide and Carbon Steel under TIG Brazing." International Journal of Mechanics 15 (January 18, 2022): 260–64. http://dx.doi.org/10.46300/9104.2021.15.30.

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In the manufacturing industry, cutting tools are the main component. To produce the best performance of the cutting tool is required high cost. The cemented carbide and steels are joined using brazing. The aim of the work is to investigate the joining of dissimilar metals between cemented carbide and carbon steel using arc brazing. The TIG brazing method has been prepared for the joining of carbide insert and carbon steel. Phenomena that occur in the joint were observed using a scanning electron microscope (SEM). The composition of the constituent elements of the brazed area was characterized by energy dispersive spectroscopy (EDS). Vickers hardness machine is used to hardness test in the brazed area. The results of the microstructure analysis and EDS test composition indicate that solid solution phase enriched Cu is detected in the brazed area. The Fe and C elements are diffusions into the brazed area. The hardness value in the brazed area is 12,16 HVN, greater than based metals especially SS400. Thus, the solid solution phase of Cu and elements of Fe and C affect the hardness value.
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Li, Zhuo Ran, Guang Dong Wu, Zheng Zheng Wang, and Ji Cai Feng. "Microstructure and Mechanical Property of the ZrB2-Based Ultra-High-Temperature Ceramic Composites Brazed Joint." Advanced Materials Research 314-316 (August 2011): 1184–88. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.1184.

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ZrB2-SiC ceramic composites was brazed by using Ti-Zr-Ni-Cu active filler in a vacuum furnace. The microstructure and interfacial phenomena of the joints were analyzed by means of SEM, EDS and XRD. The joining effect was evaluated by shear strength. The results showed that the reaction products of the ZrB2-SiC ceramic composites joint brazed with Ti-Zr-Ni-Cu active filler were TiC, ZrC, Ti5Si3, Zr2Si, Zr(s,s) and (Ti, Zr)2 (Ni, Cu). The maximum shear strength of the ZrB2-based ultra-high-temperature ceramic composites brazed joints is 143.5 Subscript textMPa at brazing temperature T=920°C and holding time t=10min.
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Ferraris, Sara, Sergio Perero, and Graziano Ubertalli. "Surface Activation and Characterization of Aluminum Alloys for Brazing Optimization." Coatings 9, no. 7 (July 23, 2019): 459. http://dx.doi.org/10.3390/coatings9070459.

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Brazing of Al-alloys is of interest in many application fields (e.g., mechanical and automotive). The surface preparation of substrates and the in depth investigation of the interface reaction between aluminum substrates and brazing materials is fundamental for a proper understanding of the process and for its optimization. The interaction between two aluminum based substrates (Al5182 and Al6016) and two studied brazing materials (pure Zn and for the first time ZAMA alloy) has been studied in simulated brazing condition in order to define the best surface preparation conditions and combination substrate-brazing material to be used in real joining experiments. Three different surface preparations were considered: polishing and cleaning, application of flux and vacuum plasma etching (Ar) followed by sputtering coating with Zn. Macroscopic observation of the samples surface after “brazing”, optical microscopy, and microhardness measurements on the cross-section and XRD measurements on the top surface gave a comprehensive description of the phenomena occurring at the interface between the substrate and the brazing alloy which are of interest to understand the brazing process and for the detection of the best conditions to be used in brazing. Plasma etching (Ar) followed by sputtering coating with Zn resulted a promising solution in case of Al5182 brazed with Zn, while the addition of flux was more effective in case of Al6016 substrate. ZAMA alloy demonstrated good interface reactivity with both Al6016 and Al5182 alloys, particularly on only cleaned surfaces.
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Gaulard, Mylène. "The "hot money" phenomenon in Brazil." Revista de Economia Política 32, no. 3 (September 2012): 367–88. http://dx.doi.org/10.1590/s0101-31572012000300002.

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SAITOH, Osamu, Akio SUZUMURA, Wakou MIYAGAWA, and Hirotaka OGAWA. "The Erosion Phenomena of Silicon Nitride at The Brazed Interface." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 18, no. 2 (2000): 236–42. http://dx.doi.org/10.2207/qjjws.18.236.

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Tung, S. K., L. C. Lim, and M. O. Lai. "Solidification phenomena in nickel base brazes containing boron and silicon." Scripta Materialia 34, no. 5 (March 1996): 763–69. http://dx.doi.org/10.1016/1359-6462(95)00577-3.

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Trivedi, N. B., B. M. Pathan, Nelson J. Schuch, M. Barreto, and L. G. Dutra. "Geomagnetic phenomena in the South Atlantic anomaly region in Brazil." Advances in Space Research 36, no. 10 (January 2005): 2021–24. http://dx.doi.org/10.1016/j.asr.2004.09.020.

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Saida, Kazuyoshi, Woo Hyun Song, and Kazutoshi Nishimoto. "Theoretical Approaches to Erosion and Wetting Phenomena during Laser Brazing Process." Solid State Phenomena 127 (September 2007): 301–6. http://dx.doi.org/10.4028/www.scientific.net/ssp.127.301.

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Dissertations / Theses on the topic "Brazier phenomena"

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Costa, Fernando Paim. "Farmers' objectives and their relationship with the phenomenon of pasture degradation in Central Brazil." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266041.

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Nogueira, Julia C. "Film and Video Festivals in South America:A Contemporary Analysis of Flourishing Cultural Phenomena." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1230612139.

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Rocha, César Barbedo. "Energetics, baroclinic instability and models of vertical structure in the Brazil Current region (22S-28S)." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/21/21135/tde-26092013-185418/.

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We use four current meter mooring records and quasi-synoptic hydrographic observations in conjunction with a one-dimensional quasi-geostrophic (QG) linear stability model to investigate the downstream changes in the Brazil Current (BC) System off the southeast Brazil (22°S-28°S) as well as its implications. The dataset depicts the downstream thickening of the BC: Its vertical extension increases from 350 m at 22.7°S to 800 m at 27.9°S. Most of this deepening occurs between 25.5°S and 27.9°S, and it is likely linked to the Santos bifurcation. To the south of that bifurcation, the BC transport is increased by at least 5 Sv. Moreover, the analysis of the water column average kinetic energy (IKE) and its barotropic/baroclinic partition show that the Santos bifurcation is associated with a substantial increase in the barotropic component of the BC System: The IKE is, on average, 70 % baroclinic to the north and becomes 63 % barotropic to the south of that bifurcation. The water column average eddy kinetic energy (IEKE) and its ratio to the IKE quantitatively reveal the conspicuous mesoscale activity associated to the BC off the southeast Brazil; accordingly, the IEKE accounts for (30-60)% of the IKE. The linear stability model predicts southwestward-propagating fastest-growing waves [~(180-190) km] within 25.5°S-27.9°S and quasi-standing most-unstable waves (~230 km) at 22.7°S, roughly consistent with observations and previous work. We also assess the ability of the QG modes and surface QG (SQG) solutions to represent the vertical structure of the sub-inertial time-varying flow in the southwestern Atlantic. At two moorings, which present a sharp near-surface decay in the vertical structure of the 1st empirical orthogonal function (EOF) of current meter time series, the SQG solutions are consistent with the data, accounting for up to 85 % of the 1st EOF variance. The SQG solutions are nonetheless indistinguishable from a four QG mode representation. In contrast, at a third mooring that do not present such sharp-decay, the vertical structure of the 1st EOF is fairly well-captured by the traditional barotropic/1st baroclinic mode combination, which accounts for 91 % of its variance. We argue that such vertical structures may be associated with the type of instability experimented by the mean flow in each region. \"Charney-like\" or surface-intensified \"Phillips-like\" instabilities may rationalize the observed SQG-like vertical structures depicted at two moorings. Mid-depthintensified \"Phillips-like\" instabilities are consistent with a two QG mode representation at a third mooring.
Séries temporais correntográficas, observações hidrográficas quase-sinóticas e um modelo linear quase-geostrófico (QG) são combinados com o propósito de investigar as transformações no Sistema Corrente do Brasil (CB) ao largo da costa sudeste (22°S-28°S) e suas implicações. O conjunto de dados revela o espessamento vertical da CB, que ocupa os 350 m superiores da coluna de água em 22,7°S e atinge 800 m em 27,9°S. Parte significativa deste espessamento ocorre entre 25,5°S e 27,9°S, provavelmente relacionado à Bifurcação de Santos. Ao sul desta bifurcação, o transporte da CB é pelo menos 5 Sv superior. Ademais, a análise da energia cinética média na coluna de água (ECM) e sua partição entre componentes barotrópica e baroclínica revela que a Bifurcação de Santos está associada ao aumento significativo da componente barotrópica do Sistema CB. A ECM é, em média, 70% baroclínica ao norte da bifurcação, tornando-se 63% barotrópica ao sul desta. A análise da energia cinética turbulenta média na coluna de água (ECTM) corrobora o importante papel da atividade de mesoescala do Sistema CB ao largo do sudeste do Brasil: A ECTM é responsável por (30-60)% da ECM. O modelo de estabilidade linear prevê ondas com maiores taxas de crescimento [~(180-190) km] que se propagam para sudoeste entre 25,5°S-27,9°S. Em 22,7°S, as ondas mais instáveis (~230 km) crescem essencialmente sem propagação, consistente com as observações e também com informações presentes na literatura. A habilidade dos modos QG e das soluções QG superficiais (QGS) em representar a variabilidade subinercial no Atlântico Sudoeste também é investigada. Em dois fundeios, a estrutura vertical da 1ª função empírica ortogonal (FOE) apresenta um decaimento agudo. Este decaimento é consistente com soluções QGS, que contêm até 85% da variância da 1ª FOE. No entanto, estas soluções convergem para uma representação por quatro modos QG. Por outro lado, a estrutura vertical da 1ª FOE em um terceiro fundeio não apresenta tal decaimento marcante. Consequentemente, a 1ª FOE é bem representada pela tradicional combinação dos modos barotrópico/1o baroclínico. Argumentamos que estas estruturas podem estar associadas ao tipo de instabilidade experimentada pelo escoamento médio em cada região. Instabilidades tipo \"Charney\" ou \"Phillips\" (intensificadas em superfície) são consistentes com estruturas verticais tipo QGS presentes em dois fundeios. Instabilidades tipo \"Phillips\" (intensificadas em meia água) são consistentes com a representação por dois modos QG em um terceiro fundeio
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Chang, Chun-Te, and 張俊德. "The Study of the Phenomena of Brazil''s Landless Workers'' Movement." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/27584078937842773227.

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碩士
淡江大學
拉丁美洲研究所碩士班
100
After entering 21st century, Brazil has become one member of the“BRICs”in the international society. It not only has rich natural resources but also abundant human resources, and that shows Brazil owning great potential of development. However, even though Brazil has become an important emerging country, it encounters several serious social problems, such as unequal wealth distribution and land concentration. In Brazil, with the economic development, the rich men live in a luxurious life but the poor people live a miserable life. In addition, only fewer landowners own nearly half the land of entire country, but most poor people neither own land nor possess the property right of land. Social movement means a group which use collusive actions with some objectives and plans to change entire or part of social phenomenon, and also use persistent collective actions to change the society. With social movements, the disadvantaged groups or the oppressed groups could fight against the unfair treatment and change their social status. New social movement theory emphasizes the struggle for rights and freedoms of values, concepts, cultures and lifestyles. Besides, new social movements are pluralistic and respect to the heterogeneous culture, and they are not bureaucratic organization model but value the concept of bottom-up. In order to resolve problems in daily life and elevate the social status, the landless rural workers in Brazil officially organized the Brazil’s Landless Rural Workers Movement in 1984 and began to struggle for their objectives. This thesis principally based on the views of new social movement theory and the approaches of the historical research method and the archival research method to discover the factors and backgrounds for the foundation of Brazil’s Landless Rural Workers Movement, meanwhile analyze its overall development deeply and the dilemmas and challenges which it occurred in the process of its development. As a whole, through the research of its development, we recognize the Brazil’s Landless Rural Workers Movement corresponds with major features of new social movement theory.
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Books on the topic "Brazier phenomena"

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Fumerton, Patricia, Pavel Kosek, and Marie Hanzelková. Czech Broadside Ballads as Text, Art, and Song in Popular Culture, ca. 1600–1900. Nieuwe Prinsengracht 89 1018 VR Amsterdam Nederland: Amsterdam University Press, 2022. http://dx.doi.org/10.5117/9789463721554.

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This landmark collection makes a major contribution to the burgeoning field of broadside ballad study by investigating the hitherto unexplored treasure-trove of over 100,000 Central/Eastern European broadside ballads of the Czech Republic, from the 16th to the 19th century. Viewing Czech broadside ballads from an interdisciplinary perspective, we see them as unique and regional cultural phenomena: from their production and collecting processes to their musicology, linguistics, preservation, and more. At the same time, as contributors note, when viewed within a larger perspective—extending one’s gaze to take in ballad production in bordering lands (such as Germany, Poland, and Slovakia) and as far Northwest as Britain to as far Southwest as Brazil—we discover an international phenomenon at work. Czech printed ballads, we see, participated in a thriving popular culture of broadside ballads that spoke through text, art, and song to varied interests of the masses, especially the poor, worldwide.
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International Conference on Photoacoustic and Photothermal Phenomena (13th 2004 Rio de Janeiro, Brazil). International Conference on Photoacoustic and Photothermal Phenomena, 13th ICCPPP, Rio de Janiero, Brazil, 05-08 July, 2004. Les Ulis, France: EDP Sciences, 2005.

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Symposium, International Astronomical Union. Astrochemistry of cosmic phenomena: Proceedings of the 150th Symposium of the International Astronomical Union, held at Campos do Jordão, São Paulo, Brazil, August 5-9, 1991. Dordrecht: Kluwer Academic Publishers, 1992.

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Symposium, International Astronomical Union. Chaos, resonance, and collective dynamical phenomena in the solar system: Proceedings of the 152nd Symposium of the International Astronomical Union, held in Angra dos Reis, Brazil, July 15-19, 1991. Dordrecht: Kluwer Academic Publishers, 1992.

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1966-, Ellwood D. (David), and Brazilian School of Probability (14th : 2010 : Armação dos Búzios, Brazil), eds. Probability and statistical physics in two and more dimensions: Clay Mathematics Institute Summer School and XIV Brazilian School of Probability, Búzios, Brazil, July 11-August 7, 2010. Providence, R.I: American Mathematical Society, 2012.

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Hawley-Howard, Teresa. Phenomenal Women: Be Brave Be Bold Be Brazen. Independently Published, 2019.

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The Space Education Phenomenon at Nasa, Brazil and Beyond. Nova Science Pub Inc, 2013.

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Deleff, Ilia. Phenomenal Crystals: Giant Quartz Crystals, Unique Minerals in World Museums, Gem Treasures of Brazil. Coronet Books, 2004.

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Lorenzetti. Who Is Jair Bolsonaro President from Brazil?: Briefly Understand the Phenomenon of Bolsonarism in Brazil, under a Holistic View, Ofthis Pitiful Episode of Brazilian History! Independently Published, 2021.

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Spracher, William C. Teaching Intelligence in the United States, the United Kingdom, and Canada. Oxford University Press, 2017. http://dx.doi.org/10.1093/acrefore/9780190846626.013.308.

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Intelligence studies, as taught by specialized departments or institutes and leading to degrees with the word “intelligence” in their titles, is a relatively new phenomenon. Intelligence is considered a profession, while intelligence studies can probably best be described as an emerging discipline that has yet to reach full maturity. Much of the more recent data on teaching intelligence is in the hands of professional associations, government agencies, and nongovernmental organizations dealing with the intelligence profession. Some of the government academic institutions which served as the wellspring for many of the nongovernmental programs that blossomed later are the Department of Defense institutions, the National Defense Intelligence College, and the National Defense University. There are also professional journals and other publications covering intelligence studies courses, as well as nongovernmental professional organizations that students of intelligence can join, such as the National Military Intelligence Association and the International Studies Association. At the international level, intelligence studies courses are offered in countries like the UK, Canada, Australia, South Africa, Israel, and Brazil. The next step is to determine what specifically is being taught, and how, among the growing number of colleges and universities getting into the business of teaching intelligence, especially in the wake of 9/11. A significant is the phenomenal growth of online programs, which allow deployed military and civilian personnel to study intelligence while practicing the theory they are learning.
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Book chapters on the topic "Brazier phenomena"

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Lee, Yong Won, Jong Hoon Kim, Young Sik Song, and Chang Sung Seok. "Mechanical Strength and Microstructural Characterization of SUS304 Brazed Joints with BNi-2 Filler Metal: Influence of Brazing Temperature and Time." In Solid State Phenomena, 1673–76. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-31-0.1673.

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Lee, Jung G., Jong Keuk Lee, Min Ku Lee, Deog Nam Shim, and Chang Kyu Rhee. "Brazing of Ti Using a Zr-Based Amorphous Filler." In Solid State Phenomena, 131–34. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908451-48-5.131.

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Lee, Kee Ahn, Sung Jun Kim, Young Mo Kim, and Moon Chul Kim. "Continuous Strip Casting, Microstructure and Performance of Ag-Cu Brazing Alloy." In Solid State Phenomena, 750–53. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-26-4.750.

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Saida, Kazuyoshi, Woo Hyun Song, and Kazutoshi Nishimoto. "Theoretical Approaches to Erosion and Wetting Phenomena during Laser Brazing Process." In Solid State Phenomena, 301–6. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-33-7.301.

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Zhang, J., L. Y. Lin, J. C. Xu, and X. Q. Liu. "Microstructure and Properties of Brazing Joint between YG8 Cemented Carbide and A3 Steel." In Solid State Phenomena, 265–70. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-33-7.265.

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Lee, B. K., I. S. Eum, H. K. Han, and C. Y. Kang. "Effects of Mischmetal Addition on the Microstructural Characteristics of BCuP-2 Brazing Filler Metal." In Solid State Phenomena, 1421–24. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-31-0.1421.

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Saida, Kazuyoshi, Woo Hyun Song, and Kazutoshi Nishimoto. "Laser Brazing Phenomena of Heat-Resistant Alloys with Precious Brazing Filler Metals." In THERMEC 2006, 4053–58. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-428-6.4053.

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Feng, J. C., Peng He, and Heinz Hackl. "Distribution of Zn and Interfacial Microstructure of Braze-Welding CMT Joints between Aluminium and Galvanized Steel Sheets." In Solid State Phenomena, 43–48. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-33-7.43.

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Kim, Yong Hwan, and S. I. Kwun. "Microstructure and Mechanical Properties of the Wide-Gap Region Brazed with Various Powder Mixing Ratios of Additive to Filler Metal Powders." In Solid State Phenomena, 479–84. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-25-6.479.

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Roazzi, Antonio, and Bruno Campello de Souza. "Advancing Facet Theory as the Framework of Choice to Understand Complex Phenomena in the Social and Human Sciences." In Psychology in Brazil, 283–309. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11336-0_16.

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Conference papers on the topic "Brazier phenomena"

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Bassanelli Pereira, Arielle dos Santos, Álvaro L. Fazenda, and Alan James Peixoto Calheiros. "Evaluating ML models for lightning forecasting in Brazil." In Simpósio Brasileiro de Banco de Dados. Sociedade Brasileira de Computação - SBC, 2022. http://dx.doi.org/10.5753/sbbd_estendido.2022.21863.

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Instruments for monitoring severe meteorological phenomena (such as lightning, flooding and landslides) can be used to assist in decision-making by state agencies, in an attempt to mitigate their possible harmful effects. These phenomena usually occur suddenly on a short-term duration, under a limited region, imposing difficulties in being predicted by regular weather forecast models, requiring specific prediction systems. Very short-term weather forecasting systems, on order of a few hours, known as nowcasting, can include numerical models of physical phenomena and machine learning algorithms. This work presents a system for forecasting the incidence of lightning, a common phenomenon in electrically active storms, through the application and evaluation of two machine learning models, an Artificial Neural Network and a Random Forest model, which were able to detect the occurrence of atmospheric electrical discharges from the automatic recognition of patterns obtained from the data generated by the numerical weather forecasts. The Random Forest model presented the best results when trained with the set that includes the ten best correlated variables, reaching 99.77% of accuracy for the case study performed.
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Kimura, Seita, Shinsuke Takemura, Masami Mizutani, and Seiji Katayama. "Laser brazing phenomena of galvanized steel and pit formation mechanism." In ICALEO® 2006: 25th International Congress on Laser Materials Processing and Laser Microfabrication. Laser Institute of America, 2006. http://dx.doi.org/10.2351/1.5060939.

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de Souza, G. G. B. "Synchrotron radiation at the Laboratório Nacional de Luz Síncrotron, Brazil." In Half collision resonance phenomena in molecules. AIP, 1991. http://dx.doi.org/10.1063/1.40540.

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Fernandes Silva Andrad, R., A. Brum Novaes, F. C. Pataro de Queiroz, and H. J. Schellinhuber. "Droughts in Northeast Brazil: A Phenomenon of Self-Organized Criticality?" In 4th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 1995. http://dx.doi.org/10.3997/2214-4609-pdb.313.288.

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van ‘t Veer, Riaan, and Ebert Vlasveld. "Green Water Phenomena on a Twin-Hull FLNG Concept." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23915.

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This paper investigates — based on model tests and potential flow calculations — several phenomena associated with the green water problem in severe sea states. The topics investigated are: the wave characteristics of the severe and steep sea states, the behavior of the vessel in these waves, the relative motions at the bow and the height of water on deck. The green water problem is of interest since many floaters used for the oil and gas production by the offshore industry are permanently moored for typically 20 years or more, and they will experience severe storm conditions with large wave heights. The investigations concern an unusual vessel type: SBM’s innovative midscale Twin-Hull FLNG concept [1]. The floater concept is to join two (standard) LNG carriers together to obtain sufficient storage volume and process deck space. The concept is under development and one aspect, from operability point of view, is the probability for green water. For this purpose a first model test campaign has been carried out. The Twin-Hull FLNG concept has been tested in extreme sea states which are typical for offshore Brazil and East-Africa. Linear potential flow calculations were applied to predict the freeboard exceedance based on relative motion amplitude operators. The correlation to the measured data is discussed. Although the research is dedicated to the Twin-Hull FLNG vessel, the observed phenomena are considered applicable to any stationary vessel in general.
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Zhao, Hui, Abraham J. Salazar, and Dusan P. Sekulic. "Influence of Topological Characteristics of a Brazed Joint Formation on Joint Thermal Integrity." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-43885.

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Adequate thermal integrity of brazed joints is a critical feature of a state-of-the-art compact heat exchanger design. New generations of aluminum compact heat exchangers with highly augmented heat transfer surfaces (such as micro-channeled extruded tubes in conjunction with composite AA3003/AA4343 multi-louvered fin foils) can provide significantly enhanced thermal performance—if the related manufacturing process, e.g., controlled atmosphere brazing (CAB) is performed flawlessly. However, empirical evidence indicates that often, even under a very tight brazing process control, design requirements imposed by heat transfer considerations lead to a more or less poor joint formation. This paper deals with an analysis of thermal features of a fin-tube joint as a function of topological alterations of the AA4343 joint filet size formed by materials processing during brazing. These alterations are caused by poor wetting and/or pronounced Si diffusion and/or increased liquid clad penetration. These phenomena lead to a less than optimal joint formation and will be illustrated by both empirical evidence and theoretical predictions. Based on numerical predictions of a joint topology formed by the surface tension driven reactive flow of molten metal, and subsequently verified by empirical evidence gathered through both laboratory and industrial testing, several topology alterations were devised as being representative for thermal integrity studies, and thermal characteristics of corresponding fin-tube joints were determined in terms of the spreading thermal contact resistance and corresponding temperature fields. Numerical predictions of joint topology were devised with an in-house developed finite element code and verified by Surface Evolver code. Temperature distributions established within selected fin-tube joint configurations were simulated using CFD software (FLUENT). Experimental data were obtained using a computer controlled transparent hot zone with an ultra high purity nitrogen background atmosphere.
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Makita, Kazuo, Masanori Nishino, Tatuo Torii, Recardo Monreal, Albert Foppiano, and Nelson, J. Schuch. "Upper atmosphere phenomena in Brazilian geomagnetic anomaly region and its surrounding area." In 9th International Congress of the Brazilian Geophysical Society & EXPOGEF, Salvador, Bahia, Brazil, 11-14 September 2005. Society of Exploration Geophysicists and Brazilian Geophysical Society, 2005. http://dx.doi.org/10.1190/sbgf2005-427.

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Monteiro Filho, José Maria da Silva, Ivandro Claudino de Sá, Lucas Cabral Carneiro da Cunha, Helena Martins do Rego Barreto, and Pedro Jorge Chaves Mourão. "Digital Lighthouse Platform: Understanding the Misinformation Phenomenon on WhatsApp." In Anais Estendidos do Simpósio Brasileiro de Banco de Dados. Sociedade Brasileira de Computação - SBC, 2021. http://dx.doi.org/10.5753/sbbd_estendido.2021.18178.

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In the past few years, the large-scale dissemination of misinformation through social media has become a critical issue, harming the trustworthiness of legit information, social stability, democracy and public health. In many developing countries such as Brazil, India, and Mexico, one of the primary sources of misinformation is the messaging application WhatsApp. In February 2020, the Panorama Mobile Time/Opinion Box survey on mobile messaging in Brazil revealed that WhatsApp was installed on 99% of Brazilian smartphones. Among users of the application, 98% said they access it every day or almost every day. In this context, WhatsApp provides an important feature: the public groups. Many of these groups have been used to spread misinformation, especially as part of articulated political or ideological campaigns. Despite this scenario, due to WhatsApp's private messaging nature, few methods were explicitly developed to investigate the misinformation phenomenon on this platform. This tutorial provides an overview of recent developments in monitoring misinformation spreading, automatic misinformation detection, and identifying misinformation spreaders. In addition, we provide an overview of the leading open problems associated with the misinformation phenomenon and briefly examine some of the existing solutions. We hope that our tutorial can help researchers better understand Brazil's misinformation propagation and use data science methods to face this critical phenomenon.
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Morgan, Timothy B., and Theodore J. Heindel. "X-Ray Particle Tracking of Dense Particle Motion in a Vibration-Excited Granular Bed." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39106.

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The Brazil nut effect is a phenomenon in which large, dense objects migrate to the top of a bed of granular media when exposed to vibration. An example of this phenomenon is finding Brazil nuts on the top of a can of mixed nuts. The same phenomenon can be observed in almost any granular system, which includes numerous industrial processes. By understanding the Brazil nut effect, knowledge can be gained to create or prevent segregation within desired industrial processes. In this project, the Brazil nut problem is examined through the use of stereoscopic X-ray imaging. The stereoscopic images are analyzed with a particle tracking algorithm to quantify large particle motion in three dimensional space. Particle motion is quantified under a variety of operating conditions to both observe the particle motion and examine the accuracy of the particle tracking algorithm.
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Martin, Inácio M., Mauro A. Alves*, Galina I. Pugacheva, and Anatoli A. Gusev. "Changes in low energy neutron count rate near ground level associated with weather phenomena." In 11th International Congress of the Brazilian Geophysical Society & EXPOGEF 2009, Salvador, Bahia, Brazil, 24-28 August 2009. Society of Exploration Geophysicists and Brazilian Geophysical Society, 2009. http://dx.doi.org/10.1190/sbgf2009-009.

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Reports on the topic "Brazier phenomena"

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Gutiérrez Rodríguez, Encarnación. Entangled Migrations The Coloniality of Migration and Creolizing Conviviality. Maria Sibylla Merian International Centre for Advanced Studies in the Humanities and Social Sciences Conviviality-Inequality in Latin America, 2021. http://dx.doi.org/10.46877/rodriguez.2021.35.

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This Working Paper discusses entangled migrations as territorially and temporally entangled onto-epistemological phenomena. As a theoretical-analytical framework, it addresses the material, epistemological and ethical premises of spatial-temporal entanglements and relationality in the understanding of migration as a modern colonial phenomenon. Entangled migrations acknowledges that local migratory movements mirror global migrations in complex ways, engaging with the analysis of historical connections, territorial entrenchments, cultural confluences, and overlapping antagonistic relations across nations and continents. Drawing on European immigration to the American continent and specifically to Brazil in the 19th century, this argument is tentatively developed by discussing two opposite moments of entangled migrations, the coloniality of migration and creolizing conviviality. To do this, the paper engages first with the theoretical framework of spatial-temporal entanglements. Second, it approaches the coloniality of migration. Finally, it briefly discusses creolizing conviviality.
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Reis, João. Slaves Who Owned Slaves in Nineteenth-Century Bahia, Brazil. Maria Sibylla Merian International Centre for Advanced Studies in the Humanities and Social Sciences Conviviality-Inequality in Latin America, May 2021. http://dx.doi.org/10.46877/reis.2021.36.

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It was not uncommon in Brazil for slaves to own slaves. Slaves as masters of slaves existed in many slave societies and societies with slaves, but considering modern, chattel slavery in the Americas, Brazil seems to have been a special case where this phenomenon thrived, especially in nineteenth-century urban Bahia. The investigation is based on more than five hundred cases of enslaved slaveowners registered in ecclesiastical and manumission records in the provincial capital city of Salvador. The paper discusses the positive legal basis and common law rights that made possible this peculiar form of slave ownership. The paper relates slave ownership by slaves with the direction and volume of the slave trade, the specific contours of urban slavery, access by slaves to slave trade networks, and slave/master relations. It also discusses the web of convivial relations that involved the slaves of slaves, focusing on the ethnic and gender profiles of the enslaved master and their slaves.
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Coelho Resende, Noelle, Renata Weber, Jardel Fischer Loeck, Mathias Vaiano Glens, Carolina Gomes, Priscila Farfan Barroso, Janine Targino, Emerson Elias Merhy, Leandro Dominguez Barretto, and Carly Machado. Working Paper Series: Therapeutic Communities in Brazil. Edited by Taniele Rui and Fiore Mauricio. Drugs, Security and Democracy Program, Social Science Research Council, June 2021. http://dx.doi.org/10.35650/ssrc.2081.d.2021.

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Spread across Brazil and attaining an unparalleled political force, therapeutic communities are as inescapable in the debate on drug policy as they are complex to define. Although they are not a Brazilian creation, they have been operating in that country for decades, and their dissemination intensified in the 1990s. In 2011, they were officially incorporated into Brazil's Psychosocial Care Network (Rede de Atenção Psicossocial, or RAPS). Since then, therapeutic communities have been at the center of public debates about their regulation; about how they should—or even if they should—be a part of the healthcare system; about the level of supervision to which they should be submitted; about their sources of funding, particularly whether or not they should have access to public funding; and, most importantly, about the quality of the services they offer and the many reports of rights violation that have been made public. However, a well-informed public debate can only flourish if the available information is based on sound evidence. The SSRC’s Drugs, Security and Democracy Program is concerned with the policy relevance of the research projects it supports, and the debate around therapeutic communities in Brazil points to a clear need for impartial research that addresses different cross-cutting aspects of this topic in its various dimensions: legal, regulatory, health, and observance of human rights, among others. It is in this context that we publish this working paper series on therapeutic communities in Brazil. The eight articles that compose this series offer a multidisciplinary view of the topic, expanding and deepening the existing literature and offering powerful contributions to a substantive analysis of therapeutic communities as instruments of public policy. Although they can be read separately, it is as a whole that the strength of the eight articles that make up this series becomes more evident. Even though they offer different perspectives, they are complementary works in—and already essential for—delineating and understanding the phenomenon of therapeutic communities in Brazil.
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Rocha, Camila. The New Brazilian Right and the Public Sphere. Maria Sibylla Merian International Centre for Advanced Studies in the Humanities and Social Sciences Conviviality-Inequality in Latin America, 2021. http://dx.doi.org/10.46877/rocha.2021.32.

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This paper traces the origins of the New Brazilian Right, regarding the emergence of new leaders, new forms of expression and organization, as well as new sets of ideas, namely libertarianism and anti-globalism. Based on more than thirty in-depth interviews, conducted between 2015 and 2019 with right-wing leaders and activists; on a collection of historical data from right-wing organisations’ archives between 2015 and 2018, and on public data, I argue that this phenomenon started in the mid-2000s, after the onset of a corruption scandal related to the Partido dos Trabalhadores (PT) and the dissemination of the pioneering social network Orkut in Brazil. This social network, founded in 2004, preceded Facebook’s popularity in Brazil and enabled the creation of alternative and disruptive spaces of debate, referred to here as “counterpublics”. By mid- to late 2010s, during the 2014 protests for the impeachment of Dilma Rousseff and Jair Bolsonaro’s 2018 presidential campaign, this emerging new right would be at full throttle.
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