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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

A antiguidadde clássica na representação do feminino : pranteadoras do Cemitério Evangélico de Porto Alegre (1890-1930)

Carvalho, Luiza Fabiana Neitzke de January 2009 (has links)
A pesquisa intitulada A antiguidade clássica na representação do feminino: pranteadoras do Cemitério Evangélico de Porto Alegre (1890-1930) analisa a influência da cultura greco-romana na representação das figuras femininas desta necrópole e apresenta um inventariado das pranteadoras. O estudo aborda também as duas marmorarias mais atuantes na capital gaúcha: a Casa Aloys e a Marmoraria Lonardi, que realizaram a colocação de algumas destas esculturas. O inventário contempla não somente a tipologia das pranteadoras, mas os materiais utilizados na arte funerária do Evangélico. A análise das pranteadoras foi amparada na presença social e moral da mulher republicana, retratada nas páginas das revistas Globo e Kodak, importantes publicações do período sobre o qual versa este estudo. / This research comprises an analysis of the greek and roman culture influences on the representation of the female figures in the necropolis indicated by its title: The classical antiquity in the female representation: mourners of the Evangélico Cemetery of Porto Alegre (1890-1930), as well as an inventory of the mourners in that cemetery. The study also approaches the two more active marble yards in the city of Porto Alegre: the Casa Aloys and the Lonardi Marble Yard, which has done the placement of some of these funerary sculptures. The inventory does not comprehend only the mourners’ typology, but also an identification of the materials employed at the funerary arts of the Evangélico Cemetery. The mourners’ analysis took in consideration the social and moral presence of the republican woman as portrayed in the Globo and Kodak magazines´ pages, which were important publications in the period that this study discusses.
92

Behaviour of Accessory Monazite and Age Significance During Metamorphism and Partial Melting During Grenville Orogeny: An Example from Otter Lake Area, Central Metasedimentary Belt, QC

Séjourné, Brianna L. January 2014 (has links)
The accretionary Mesoproterozoic Grenville Orogeny (ca. 1300 – 980 Ma) involving the Central Metasedimentary Belt is a key building block of the eastern Laurentian margin. A petrographic, mineralogical, geochemical and geochronological study of the migmatite complex in Otter Lake (QC) within the Marble Domain is used to resolve regional metamorphic and magmatic events primarily recorded in the leucosome accessory minerals (i.e. monazite). The relationship between the different stages of monazite and garnet growth and dissolution during the tectonic evolution of the orogenic history for the interpreted metasomatic (injected) and anatectic (in situ) monazite-bearing neosomes from this study supports published thermochronological work in the area and challenges the claim that the Central Metasedimentary Belt was not heated above 500 °C during the Ottawan phase. Instead, the region shows Grenville magmatic and anatectic events were overprinted by high-temperature, fluid-rich Ottawan-phase metamorphism recorded within both injected (monazite-bearing) and in situ (monazite- and garnet-bearing) neosomes.
93

Analys av röda missfärgningar i Gåsgruvans marmor / Analysis of red discolouration found in crystalline limestone in Gåsgruvan quarry

Hesser, Sarina January 2020 (has links)
Detta arbetes mål har varit att hjälpa företaget SMA Mineral att utreda de rödamissfärgningar som allt oftare påträffats i deras marmor. Rapporten är högst visuellpå mikroskopisk nivå, och avhandlar vad missfärgningarna beror på. Provmaterialhar undersökts och karakteriserats mineralogiskt och geokemiskt, och typer avmissfärgningen har identifierats. Även en förklaring över de geologiska processersom ger upphov till missfärgningarna har formats. De metoder som använts underarbetet är egna undersökningar med komplement av en litteraturstudie påavhandlingar som handlar om just missfärgningar i marmor. Provmaterial harinhämtats från tre olika platser i gruvan, dessa har sågats och tvättats och några haräven slipats och polerats. Detta material har sedan använts genom hela arbetet.Optiska observationer med hjälp av binokulär har dokumenterats digitalt, detta gavinformation om att missfärgningen ligger mellan karbonatkristallerna, och sannolikthar varit av en mer löslig karaktär i ett tidigare skede. Utifrån detta kategoriserasmissfärgningen till två olika typer. Typ A förekommer som asymmetriska,koncentrerade fläckar på och mellan kristaller men till synes oregelbundet, medantyp B följer mikrofina sprickor och kan ses i bandade regelbundna formationer imaterialet. Järnrika kristaller upptäcktes i missfärgningarnas omedelbara närhet ochhär skapades hypotesen om att det är järnoxider som orsakat föroreningarna. ÄvenSEM-analyser har gjorts för att kunna identifiera den geokemiska sammansättningenav missfärgningarna. Resultaten från SEM- och XRF-analyserna bekräftade tesen, dåjärn förekom i varierande grad i samtliga analyser utom en. Dessutom hittadeshematit som i sig lämnar röda spår, samt ren rost i form av goetit. Ävenlitteraturstudien bekräftade att förekomster av järnrika mineral i marmor förr ellersenare kommer att orsaka missfärgningar. / The goal of this project has been to assist SMA mineral, a limestone producer, tofind the source of red discolourations found in their crystalline limestone. Thediscolouration has appeared on a more regular basis than before and is starting tobecome a problem for the company.This is a highly visual report focused on a microscopical level, that follows thestudy and finding of the origin of the red discolourations. Specimens from threedifferent locations in the quarry have been collected, then cut to proper sizes to fitthe needs for the scans and examinations suited for the project. Some of the sampleswere polished to fit the requirements of SEM. The material has been opticallyanalysed through a binocular microscope and documented with high resolutionimages. This was the first major breakthrough, since the discolouration showed tobe placed between the carbonate crystals, and appeared to have been more of asolution-like substance at some point. Based on the findings, the discolourationcould be categorised inte two types, type A appears as an irregular spotting oncrystal surfaces with a deeper red colour, whilst type B can be found in fine cracksin the material and follows a more regular pattern. Lots of minerals rich in ironwere also found in close proximity to the discolourations, which led to a hypothesisthat iron oxides might be the source of the problem. The thesis was confirmed bySEM- and XRF analyses of the material. Iron in different weight-percentages wasfound in all of the analyses except for one.The mineralogical and geochemical properties of the discolouration has beendefined, and the geological process that leads to the discolouration is explained.
94

Modelo integrado de Lean Manufacturing con Gestión de Inventarios para reducir el inventario y scrap generado en el sector de acabados de construcción / Integrated lean manufacturing with inventory management model to reduce inventory and scrap generated in the construction finishing sector

Sanabria Machuca, Andrea Alexandra, Zavala Salinas, Geiner Junior 06 January 2021 (has links)
Este documento se enfoca en reducir el inventario y el scrap generado a lo largo del proceso productivo de empresas del sector de acabados de construcción. Puesto que este exceso impacta negativamente a la rentabilidad por los altos costos de inventario que incurren. Por ello, la principal motivación de esta investigación es proponer planes de mejora para las compañías del sector y así incrementar su rentabilidad. Debido a que las investigaciones previas abordan estos problemas por separado, el aporte del presente artículo consiste en estudiar ambos problemas en este sector poco analizado. Para ello, se propuso un modelo integrando las herramientas de Lean Manufacturing: 5’S y Estandarización Kaizen; con las de Planeamiento y Gestión de inventarios. Con lo cual, se logró reducir, en una PYME del sector, el inventario y scraps en un 10% e incrementar la reutilización de planchas/ scrap de 51.44% a 60.70%. Es así que se demuestra que la combinación de estas herramientas logra mitigar el problema encontrado. / This document focuses on reducing the inventory and scrap generated throughout the production process of companies in the construction finishing sector. Because this excess negatively impacts profitability due to the high inventory costs incurred. Therefore, the main motivation for this research is to propose improvement plans for companies in the sector and thus increase their profitability. Previous research addresses these issues independently, so that the contribution of this paper is to study both problems in this rarely analyzed sector. To do this, a model integrating the tools of Lean Manufacturing: 5'S and Kaizen Standardization, with Planning and Inventory Management was proposed. With which it was possible to reduce the inventory and scraps in a SME of the sector by 10% and increase the reuse of sheets and scrap from 51.44% to 60.70%. Thus, it is demonstrated that the combination of these tools mitigate the problem. / Trabajo de investigación
95

Archéologie de l'empreinte : techniques de fixation des statues en Grèce égéenne, de l'époque archaïque à la fin de l'époque hellénistique (VIIè - Ier siècle av. J.-C.) / The footprints of Greek sculptures : an archaeological study of techniques used to fasten statues on their bases Aegean Greece from the Archaic period to the end of the Hellenistic period (7th-1st century BC)

Nouet, Rachel 02 December 2017 (has links)
Ce travail vise à étudier les techniques de fixation des statues sur leurs bases dans le monde grec, depuis la fin du VIIe s. jusqu’à la fin de l’époque hellénistique, à partir des bases inscrites. Il se fonde sur l’étude d’un corpus de 387 monuments ayant conservé des traces de fixation, à Delphes, Délos et Athènes, décrits et analysés dans un catalogue dédié. La première partie est consacrée à l’établissement d’une chrono-typologie des techniques de fixation visant à les caractériser en fonction du matériau, de la taille et du type de figure, et à les dater. La seconde partie s’attache à l’interprétation des traces de fixation en comme empreintes de la statue disparue. On a d’abord déterminé le type d’informations qu’elles pouvaient apporter sur elle, comme son matériau et sa taille, mais aussi son type et surtout sa position. On s’est ensuite intéressé aux bases signées, afin de dégager des traditions artisanales propres à des régions ou des ateliers, en croisant la fixation utilisée et les positions révélées par les traces. Enfin, on s’est interrogé sur les évolutions de l’utilisation des matériaux ; on a pu dégager le rôle des contextes d’exposition à partir de l’époque classique, et contribuer à élucider le retour du marbre à partir du IIe s. Cette étude entend par là contribuer aux recherches sur les techniques de fabrication autant qu’à celles sur la sculpture dans son contexte. / The study examines the techniques used to attach statues to their bases in the Greek world from the end of the 7th c. BC to the end of the Hellenistic period. Starting from bases bearing inscriptions, it builds on a corpus of 387 monuments from Delphi, Delos and Athens, showing traces of attachment. Their description and analysis can be found in a separated catalogue. In the first part of the study, a chrono‐typology was elaborated, identifying and dating each technique according to the material, the size and the type of the figures. In the second part, the traces of attachment were interpreted as signs of the missing statue. First, we showed that these traces brought information on its material and its size but also its type and its position. Then we focused on signed bases and proceeded to a cross‐examination of the kind of technique used and the position revealed by the traces in order to identify artisanal traditions specific to regions or workshops. Finally, we considered the reasons for using marble or bronze for statues; we thus showed the importance of the setting context from the classical period onward, as exemplified by the come-back of marble sculpture in the 2nd c. BC. The study is thus intended as a contribution to research both on attachment techniques and sculpture in its context.
96

Avaliação da radioatividade natural em mármores e granitos comerciais do estado do Espírito Santo / Assessment of natural radioactivity in commercial marble and granite of Espírito Santo state

AQUINO, REGINALDO R. de 22 June 2016 (has links)
Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-06-22T13:47:28Z No. of bitstreams: 0 / Made available in DSpace on 2016-06-22T13:47:28Z (GMT). No. of bitstreams: 0 / Tese (Doutorado em Tecnologia Nuclear) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
97

Avaliação da radioatividade natural em mármores e granitos comerciais do estado do Espírito Santo / Assessment of natural radioactivity in commercial marble and granite of Espírito Santo state

AQUINO, REGINALDO R. de 22 June 2016 (has links)
Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-06-22T13:47:28Z No. of bitstreams: 0 / Made available in DSpace on 2016-06-22T13:47:28Z (GMT). No. of bitstreams: 0 / Neste trabalho foram determinadas as concentrações dos radionuclídeos naturais 226Ra, 232Th e 40K em amostras de granitos e mármores, abrangendo as principais lavras de extração do estado do Espírito Santo, sudeste do Brasil. Para cada sítio de estudo, três amostras foram seladas em frascos de 100 ml de polietileno de alta densidade. Após espera de aproximadamente 4 semanas para atingir o equilíbrio secular das séries do 238U e 232Th, as amostras foram medidas por espectrometria gama de alta resolução e o espectro analisado com o software WinnerGamma. A correção da auto-absorção foi realizada para todas as amostras utilizando expressão e método desenvolvidos para este fim. A concentração do 226Ra foi determinada pela média ponderada das concentrações do 214Pb e 214Bi, a concentração de 232Th pela média ponderada das concentrações dos 228Ac, 212Pb e 212Bi e a concentração de 40K pela sua transição única de 1460 keV. O equivalente em rádio e o índice gama foram obtidos a partir das concentrações de 226Ra, 232Th e 40K. O radônio emanado foi medido em câmera de exalação usando a técnica de detectores passivos de estado sólido (SSNTD) sendo estes expostos em monitor NRPB/SSI-H. Na exposição foi utilizado um detector comercial CR-39® e um plástico de fabricação nacional denominado Durolon® sendo caracterizado para este fim pela técnica desenvolvida denominada dupla exposição e fator de sensibilidade intrínseca. O plástico caracterizado mostrou-se eficiente para a aplicação e o fator de calibração correspondendo a 1,6±0,1 traços cm²(kBq m³dia)¹ em relação ao fator para o CR-39 que equivale a 2,8±0,2 traços cm²(kBq m³dia)¹. O detector mostrou maior eficiência para doses mais elevadas. A atividade determinada por detecção passiva mostrou atividades variando de 100±10 Bq·m³ até 2400±300 Bq·m³, destacando-se a maior taxa de exalação para o granito Iberê Mombasa. Para os mármores foram determinados valores variando entre 80±10 Bq·m³ até 200±25 Bq·m³ destacando os mármores Cintilante e Branco com maiores valores determinados. Os valores determinados para a taxa de exalação superficial apresentam-se aproximadamente iguais com exceção dos granitos Iberê Mombasa e Iberê Prado que apresentaram valores acima de 1 Bqm-2h-1. As medidas por espectrometria gama mostraram que as concentrações de 226Ra variaram de 1,9 0,2 Bq.kg-1 a 483 55 Bq.kg-1, com o maior valor para o granito Iberê Mombasa. As concentrações de 232Th variaram de 3,2 0,4 Bq.kg-1 a 224 6 Bq.kg-1, com o maior valor determinado para o granito Cinza Corumbá. As concentrações de 40K variaram de 8,8 1,8 Bq.kg-1 a 1642 167 Bq.kg-1, com o maior valor determinado para o granito Iberê Vitara. O cálculo do equivalente em rádio mostrou que a maioria das amostras podem ser definidas como categoria-I (aplicação civil) abaixo de 370 Bq.kg-1, exceto para os granitos Cinza Corumbá, Iberê Crema Bordeaux e Iberê Mombasa que podem ser classificados como categoria II (até 740 Bq.kg-1). A maioria dos granitos avaliados mostraram índices de exposição interno e externos abaixo de 1,0 mSv·ano¹, exceto os granitos Cinza Corumbá, Iberê Crema Bordeaux e Iberê Mombasa que superaram este valor entre 1,0 a 3,2 mSv·ano¹ deste índice. Para a exposição anual, apenas os granitos Cinza Corumbá, Iberê Crema Bordeaux e Iberê Mombasa superaram o limite de 1,5 mSv·ano¹. Para os índices de exposição alfa apenas os granito Iberê Crema Bordeaux e Iberê Mombasa são limitados a confecção de material de construção para aplicações superficiais. Entretanto, se considerando o índice de exposição gama, os granitos Cinza Corumbá, Cinza Andorinha, Amarelo Icarai, Cinza Ocre, Iberê Crema Bordeaux e Iberê Mombasa terão aplicação controlada. Conclui-se que os granitos em sua maioria e todos os mármores avaliados apresentam aplicações possíveis em diferentes setores de atividade e para diferentes finalidades e que os granitos que excedem os índices não devam ser aplicados em interiores de residências. / Tese (Doutorado em Tecnologia Nuclear) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
98

Architektonická studie sakrálního objektu Brno - Líšeň / Architectural study of the sacral object Brno - Live /Líšeň/

Minárová, Tereza January 2020 (has links)
The subject of this diploma thesis is the design of a study of a sacral object - the Church of the Descent of the Holy Spirit in Brno, Líšeň. The church building is complemented by a spiritual center. The construction program is limited to the following: the church building, with its facilities - parking spaces, rehearsal room, flower preparation room, sale of small items with a rest area; main nave of the church, choir, space for children with parents, chapel; background of the sacristy - confessional, parish office, sacristy, depositary. Another part of the building program are the premises of the spiritual center: reception, foundation offices with archives, conference room, Sunday school classroom, multifunctional hall, club room, 3 apartments with a separate chapel. Everything is complemented by technical and hygienic facilities. The design is extended by relaxation areas in the vicinity, which expand the portfolio of civic amenities in the area. The design includes both sacral and profane functions. The spiritual center is therefore of a multifunctional nature and offers stimuli both for the Salesian community and for the local inhabitants of the adjacent settlement. Their meeting center is Kostelní náměstí, which meets in the axes of the two main directions of arrival from Horníkova Street and from the Salesian Youth Center. The foreground with seating and sale of small items serves the general public, which can continue to use the multifunctional hall for concerts, lectures, exhibitions. The premises of the clubhouse, classroom and the Parish Atrium will be used for educational and other activities for children, their parents and grandparents and other social groups. The spiritual center also enables the official activities of the foundation with the possibility of using the surrounding facilities. The center also offers a private part for living within the parish with three 2 room units, reserved parking and storage space. The whole complex will provide
99

Obchod s mramorem v pozdně antické Ravenně: archeologický materiál z komplexu San Severo / Ravennate Marble Trade in the Late Antiquity: Material from the San Severo Complex

Tůmová, Helena January 2013 (has links)
This thesis aims to study the commercial mechanism of Ravenna in the Late Antiquity from the point of view of the amount, type and provenance of the imported stone artefacts (fragments of architectural decoration, revetments slabs, opus sectile, sarcophagi), based on the study of archaeological material from the site of the basilica and the monastery of San Severo in Classe (Ravenna). Ravenna represented an important administrative and cultural center in the 5th and 6th century, connecting western and eastern artistic influences and focusing herself on trade and production. Determination of the stone artefacts from the San Severo locality was principally based on the archaeometric methods and on the combination of archaeologic and geologic approach as well. Specific archaeometric methods (macroscopic, geochemical and mineralogical-petrographic analyses) together with a quantitative evaluation were applied. Many scientific works, dedicated till this time to the art history of late antique Ravenna and dealing also the argument of ravennate "marbles" presumed the prevailing provenance from Proconnesos and usual commercial relations between Ravenna and Constantinople as well. Constantinople played a role of a mediator of oriental localities and Ravenna. The hypothesis concerning the provenance of the...
100

Magma-Carbonate Interaction and CO2 Release: A Case Study from Carlingford Igneous Centre, Ireland / Magma-karbonat-interaktion och CO2-utsläpp: En studie från Carlingford Igneous Centre, Irland

Lagrosen, Emelie January 2020 (has links)
Magma which intrudes into carbonate rich crust, interacts with the carbonate in several ways, for example by contact metamorphism and formation of marble or by metasomatism resulting in calc-silicate skarn. These processes release volatiles, such as CO2, from the carbonate and might thus cause climate change. One volcanic complex where the intrusions and their surrounding metamorphic aureole are well exposed and therefore convenient for investigation of magma-carbonate interaction is the Carlingford Igneous Centre in NE of Ireland. The complex is dominated by a gabbro lopolith and a microgranite ring dyke, which intruded into limestone and meta-siltstone at around 62-60 Ma. The purpose of this study is to investigate the extent of magma-carbonate interaction and assess the amount of CO2 which could have been released from the aureole at Carlingford. This is done by analysing major and trace elements as well as carbon and sulphur content in skarn and marble samples from a transect along the calc-silicate metamorphic aureole. The analytical methods used are SEM- EDX, XRF, LA-ICP-MS and carbon and sulphur analyses. The CO2 release is calculated by comparing the carbon and CO2 content in the skarn and marble samples with that in the unmetamorphosed limestone. The results show that the skarn has experienced a strong interaction with the magma, as it contains several high-grade minerals, such as wollastonite, vesuvianite and pyrope, and has lost almost all its carbon. The extent of interaction and amount of CO2 release is generally much lower in the marble, even though a few marble samples show a strong interaction and a high degree of degassing. On the other hand, the amount of marble in the aureole turns out to be significantly higher than the amount of skarn (70-90% compared to 10-30%). The total mass of CO2 release from the calc-silicate aureole is calculated to 0.64-9.06 Gt, where 1.30-2.67 Gt being the most realistic amount. This released CO2 has probably not caused any significant climate change on its own but may have had a small contribution to global warming together with other volcanoes that were active during the same period of time. / Magma som tränger in i karbonatrik jordskorpa, integrerar med karbonaten på flera olika sätt, t.ex. genom kontaktmetamorfos och bildande av marmor eller genom metasomatos, vilket resulterar i kalk-silikatisk skarn. Dessa processer släpper ut flyktiga ämnen, som exempelvis CO2, från karbonaten och kan därmed orsaka klimatförändring. Ett vulkaniskt komplex där intrusioner och deras omgivande metamorfa aureoler är välexponerade och därmed lämpliga för undersökning av magma-karbonat-interaktion är Carlingford Igneous Centre i nordöstra Irland. Komplexet domineras av en gabbro-lopolit och en mikrogranitisk ring-gång, som trängde in i kalksten och metasiltsten för ca 62-60 Ma. Syftet med studien är att undersöka graden av magma-karbonat-interaktion och bedöma mängden CO2 som kan ha släppts ut från aureolen i Carlingford. Detta utförs genom analysering av huvudelement och spårelement samt av kol- och svavelinnehåll i skarn- och marmorprover från en transekt genom den kalk-silikatiska metamorfa aureolen. De analytiska metoder som används är SEM-EDX, XRF, LA-ICP- MS samt kol- och svavelanalyser. Mängden CO2 beräknas genom att jämföra kol- och CO2-innehåll i skarn- och marmorprover med innehållet kol och CO2 i den ickemetamorfa kalkstenen. Resultaten visar att skarn har genomgått en stark interaktion med magman, då bergarten innehåller flera mineral av hög metamorf grad, som exempelvis wollastonit, vesuvianit och pyrop, samt har förlorat nästan allt sitt kol. Graden interaktion och mängden CO2-utsläpp är generellt mycket lägre i marmorn än i skarnen, även fast några marmorprover visar stark interaktion och en stor del avgasning. Å andra sidan är mängden marmor i aureolen signifikant högre än mängden skarn (70-90% jämfört med 10-30%). Den totala massan av CO2-utsläpp från den kalk-silikatiska delen av aureolen är beräknad till 0,64-9,06 Gt, där 1,30-2,67 Gt anses vara den mest realistiska mängden. Detta utsläpp av CO2 har troligtvis inte orsakat någon signifikant klimatpåverkan på egen hand, men kan ha haft en liten bidragande effekt till global uppvärmning tillsammans med andra vulkaner som var aktiva under samma geologiska tidsperiod.

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