Дисертації з теми "Nya material"
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Carlsson, Hanna. "Nya träfiberbaserade material = nya formgivningsmöjligheter?" Thesis, Malmö universitet, Fakulteten för kultur och samhälle (KS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-22828.
This study has focused on material development to investigate how a new wood fiber-based material could be designed to make it possible to create double-curved surfaces in a sustainable way. Areas that has been focused on in the study have been materials and product design and sustainable development. A project has been carried out for the study based on the method Material Driven Design. The result was a material composed of residual material from other productions. Chip fibers from wooden workshops as well as bone adhesives made from residues from the slaughtering industry have been used to create a castable, wood fiber based and completely organic material. The result of the material development was applied to a product concept to show how the material could be used and to give a picture of how material development and product design can interact to open new design possibilities.
Ilic, Natasa, Nektaria Lalangas, Jowan Rostami, and Alexander Wiorek. "Nya material från protein-nanofibrer." Thesis, KTH, Skolan för kemivetenskap (CHE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208749.
During this bachelor thesis project, the impact of protein nanofibers on materials has been analysed by comparing films made from fibrillar and non-fibrillar protein. Fibrillation of soy protein isolate was performed during at least 24 hours at pH 2 and a temperature of 85 ◦C. Analysis of the nanofibers was made with Thioflavin T (ThT) fluorescence and atomic force microscopy (AFM). The spectra from ThT Fluorescens indicated the presence of β-sheets and AFM confirmed that the fibrils had a morphology that is characteristic of protein nanofibers. The results indicated that heating time and protein type were the parameters which had the largest impact on the morphology of the fibrils. The synthesised films from both fibrillar and non-fibrillar protein were coherent with exception of some cracks. The elastic modulus from AFM indicated that the fibrillar film was more heterogeneous compared to the non-fibrillar film. To attain coherent films, the plasticising agent glycerol was added. To summarise, both fibrillar as well as non-fibrillar materials were successfully synthesised, however, further research is necessary to optimise the properties of the material.
Lindfors, Thomas. "Underlagstak : utförande och funktion med nya material och nya tekniska lösningar." Licentiate thesis, KTH, Byggvetenskap, 1994. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34616.
Axelsson, Maria. "Gamla material presenterade i nya medier." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-150537.
Lovén, Bernhard. "Nya ekologiskt hållbara material tillämpade på IKEAs madrasser." Thesis, KTH, Maskinkonstruktion (Inst.), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99951.
To have an environmental profile is more of a requirement than an objective for major companies of today. As the world population and consumption habits are steadily increasing, the demands of companies contributing to the society in terms of social-, economical- and ecological sustainability are increasing as well. At the same time this must be combined with a business climate were consumption and sales are what keeps a company evolving. The purpose of this study is to create a foundation and an understanding for different aspects within eco-design. It should also provide possible alternatives and aspects about the product and possible concepts from a comfort- economical- and ecological perspective. The study is performed at IKEA of Sweden and the product is the IKEA mattress range focusing on exchanging the foam material used as a comfort material. By using a qualitative research method and an explorative approach based on two series of interviews with experts within different areas valuable knowledge and information regarding materials and approaches were obtained. The study concludes the importance of having a structured and thought through strategy that is based on ideology rather than a traditional mechanical product development strategy. By modularizing and redefining the product the possibilities of great environmental improvement potentials are identified. The concept presented is based on a polypropylene design that with the assurance of a comfort aspect would have a significant potential in improving the products environmental impact. From an economical point of view the product would be constructed by material that is competitive when it comes to raw material but probably be more expensive in producing than the product of today. The commitment necessary for creating a product that includes both a positive recycling and a material metabolism is obvious at IKEA, however it would demand restructuring and taking a business risk. To be the first manufacturer that is able to sell a product from a holistic environmental perspective would generate enormous business possibilities.
Jalal, Kerollos. "Utforskandet av det nya materialet White Wood." Thesis, Högskolan i Gävle, Industridesign, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-33021.
Klingenberg, Therese. "Stoppade möbler under 50- och 60- talet : Nya material och tekniker." Thesis, Linköping University, Carl Malmsten - furniture studies, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16305.
Idag kommer det in mycket sittmöbler från 1950- och 1960-talet till tapetserarverkstäderna som är stoppade med skumplast och latex. Det kan ofta vara svårt att veta vad man ska göra med dessa möbler. Man kanske ställs inför frågor som; Måste den gamla stoppningen bytas ut helt? Om man kan bevara, hur länge till kommer den gamla stoppningen att hålla innan den bryts ned helt? Går det ens att bevara? Vad har det för betydelse för värdet av möbeln.
Jag anser att man som möbeltapetserare bör kunna sin historia och känna till material och tekniker som användes under olika tidsperioder. Så jag har därför valt att avhandla stoppade möbler från 1950- och 1960-talet med fokus på de nya material och tekniker som kom att användas under denna tid. Min avhandling omfattar historik från 1950- och 1960-talet, nya material och tekniker som kom under denna period men också tre dokumenterade tapetserararbeten av sittmöbler. Jag ville se hur möbler från ovannämnda period har stoppats från grunden så jag kunde få en närmare uppfattning om materialen som sådant och hur det är att arbeta med dessa.
1950-talet var ett experimenterande årtionde med en optimistisk tro på nya tekniker och material som kom efter andra världskriget. I Sveriges satsade man på möbelindustrin och dessutom ökade intresset för inredning i de svenska hushållen.
1960-talet innebar främst nybyggnationer och moderniseringar av befintliga bostäder, vilket kom att öka efterfrågan på möbler skapade för de unga konsumenterna som flyttade hemifrån och skaffade egna boenden. Unga formgivare och konsthantverkare gav sig till känna med starka färger, stora mönster och nya material. De opponerade sig mot det stillsamt eleganta och sökte en friare och mer uttrycksfull form.
Typiska former för sittmöbler under 1950-talet var organiska, strömlinjeformade och geometriska former. Man strävade efter att ge möblerna ett svävande eller vilande intryck för att uttrycka lätthet. Det tidiga 1960-talet utmärktes mer av enkla, stilrena och funktionalistiska möbler. I slutet av 1960-talet blev möblerna och inredningen fräckare, mjukare, rundare och färggladare.
Stoppningen i möblerna, som tidigare bestått av kroll och tagel, ersattes av mer och mer av skumgummi och skumplast, medan resårhus ersattes av spiralkärnor (en mängd sammansatta resårer). Det tidigare hantverket ersattes av modultänkande och produktionen rationaliserades. Det handgjorda förlorade i anseende och sågs som omodernt.
Jonasson, Felicia. "GÖR PLATS FÖRPARADIGMSKIFTE! : Bildlärares perspektiv på nya och traditionella material, metoder och medier." Thesis, Umeå universitet, Institutionen för estetiska ämnen i lärarutbildningen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-180123.
Regazzoni, Marco. "Inducerad infiltration och Vyredox - Studie av Tranås nya vattentäkt." Thesis, KTH, Mark- och vattenteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96234.
Andersson, Catrin. "Nya tankar - Ny miljö : En förändringsprocess från dagis till förskola." Thesis, Södertörns högskola, Lärarutbildningen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-14520.
There is a great increase of the number of children in Swedish preschools and in the same time there is less resources. With the increase of the size of the group of children we have a growth of greater anxiety. The teachers in Swedish preschool experience a lot of running around and conflicts. This means that the teachers strives to find a new way to decrease the anxiety and conflicts among the children. The purpose of my study is to examine how one preschool carried out a change process in their indoor environment concerning the room, furniture and material. The purpose is also to study how children’s social interaction is affected by the new environment, there communication and interaction that is between child –child and child- environment which is a great deal of importance to a child’s learning process. This interaction between children stimulates their language which in its turn stimulates the children´s thinking. An important deal in interaction is the environment. The environment has an important part in stimulating the children´s development and learning. My method has included qualitative interviews and the study is done on a preschool with five informants which are teachers. The result of the study shows that to get a successful changing process the leaders has to be inspiring and perceptive. The leaders need to give their collaborators the time to go through every step of the changing process. The preschool Solrosen is keen on offering an accessible, inspiring and challenging indoor environment for children to develope in their own pace. After the preschools changing process, their indoor environments is no longer like a home, instead it has become a place for children to be inspired, creative and develope into individuals.
Lennaárd, Max. "MADE IN SWEDEN : Förslag till en möbel av lokala hållbara material tillverkad med nya digitala produktionsverktyg." Thesis, Konstfack, Industridesign, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-5899.
Nilsson, Johanna. "Utveckling av flygtaktiken för att möta det nya hotet." Thesis, Försvarshögskolan, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-2127.
While participating in international missions, the Swedish Air force may encounter new kinds of threats. This result in a needed adaptation or change in flight tactics to avoid aircraft damage. The light weight plans of the 21th century have a low degree of protection and the opponent can affect the material and construction with small arms. The purposes of this essay is to analyze how the new threats differ from what the Swedish Air force faces on a national level, and also analyze how small arms affects composite and in turn affects the flight tactics. I have initially used a descriptive method of the empiri and thereafter I used an analytic method in order to later on discuss and finding a conclusion on how the flight tactics need to be adapted and changed for international missions. In the conclusion I found that low caliber fire affects the composite material in a high degree, which means that the projectile will deform, disfigure and go straight through the material. I also discuss alternatives for the takeoff and landing procedures in a way that will reduce the exposure time and avoid the affects that the opponents can make on the aircraft.
Wilen, Linda, Daniel Norin, and Anna Eriksson. "Bomullens nya ansikte : Kan man finna ett material som kan agera substitut till bomullen för producenter inom yrkeskläder?" Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20830.
Program: Textil produktutveckling med entreprenörs- och affärsinriktning
Gustafsson, Linnea. "Novation i norr : nya dopnamn och namngivningsmönster i Skelleftebygden 1791-1890." Doctoral thesis, Umeå universitet, Litteraturvetenskap och nordiska språk, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-56801.
digitalisering@umu
Suomela, Tobias, Tomas Ek, and Önay Jakobov. "Illegal IT-användning : Har beteendet gällande nedladdning av upphovsrättsskyddat material bland studenter förändrats till följd av den nya upphovsrättslagen?" Thesis, Örebro University, Department of Business, Economics, Statistics and Informatics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-1208.
I denna uppsats behandlar vi en form av illegal IT-användning, nedladdning av upphovsrättskyddat material via Internet. Undersökningen är koncentrerad till att undersöka om beteendet gällande nedladdning hos studenter förändrats till följd av den förändrade upphovsrättslagen som i juli 2005 trädde i kraft. Beteendet innebär om studenterna förändrat sin nedladdningsfrekvens och sitt tillvägagångssätt efter lagändringen jämfört med innan lagändringen samt vilka orsaker som ligger bakom det aktuella beteendet. Undersökningen genomfördes vid Örebro universitet.
För att samla in data till denna undersökning gjordes en enkätundersökning som besvarades av 153 stycken individer. Data för att sammanställa inledning, frågeställning och syfte samlades i huvudsak in från artiklar och information som funnits via Internet.
Det vi kom fram till i denna undersökning var att nedladdningsfrekvensen och antalet som fortfarande laddar ned är mindre efter lagändringen än det var innan. Orsakerna till den minskade nedladdningen är främst att de känner att risken att åka fast är stor samt att de anser att straffet för nedladdning är tillräckligt hårt för att avskräcka. En annan viktig orsak är att de tillfrågade vill vara laglydiga.
Bland dem som fortfarande laddar ned anser större delen att risken att åka fast är liten samt att straffet för nedladdning inte avskräcker tillräckligt mycket. De har även till viss del förändrat sitt beteende när det gäller tillvägagångssättet vid nedladdningen. Många användare har bytt från att använda Direct Connect till att använda BitTorrent istället.
Linder, Charlotte, and Karin Norinder. ""Nu kan vi flyga med våra mantlar och vårt nya hår" : En kvalitativ studie om utklädningskläder som pedagogiskt material i förskolan." Thesis, Stockholms universitet, Barn- och ungdomsvetenskapliga institutionen, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-91209.
Sofee, Sofidar. "Äggskal,avfall eller resurs? : En materialdriven designprocess." Thesis, Högskolan i Gävle, Avdelningen för industriell ekonomi, industridesign och maskinteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-36411.
Antar, Susan. "Kristen ortodoxi i svenska läroböcker : En analys av framställningen av ortodoxi i fyra läroböcker innan den nya läroplanen. LGR11 och GY11 och fyra efter." Thesis, Södertörns högskola, Institutionen för kultur och lärande, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-25355.
Halla, Hellgren Katarina. "Eggcycling : En studie om hur vi kan ta tillvara på äggskalsrester och genom en materialdriven designprocess utveckla nya material i hemmiljö." Thesis, Malmö universitet, Institutionen för konst, kultur och kommunikation (K3), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-44554.
Every year, 100,000 tonnes of eggs are on average consumed in Sweden. As the shell stands for c. 12% of an egg’s weight, this results in some 12,000 tonnes off eggshells. Currently most eggshells are sorted as food waste, which results in biogas through anaerobic digestion or composting, that in turn can be consumed as energy. However, there are discussions in a number of municipalities that eggshells are too heavy to be converted into biogas as they interfere with the process in the anaerobic digesters. This study aims to investigate whether eggshells could instead be used in a materials-driven design process in a domestic setting. Previous research has covered design using food waste, and this study builds on that by exploring how biomaterials from a local resource can be employed. Furthermore, the study presents how eggshell-based objects can easily be produced in a domestic setting as a DIY project - even by non-designers. Using carefully selected methods, a materials and production proposal was compiled and then tested in a workshop format. The result of this is a concept named Äggdal. The concept is an example of how an eggshell-based material could be formulated, but also show potential use cases for the material. As a result, this study contributes further knowledge on how food waste can be put into use as a sustainable material, while also being a rewarding and creative DIY project. This kind of design can hopefully serve to promote sustainability through reduced consumption and more responsible production methods, and that designers can play a large role in the transition towards a circular economy.
Pettersson, Caroline, and Sofie Sandqvist. "Konsumenters adoption av nya innovativa produkter : en studie om användning av funktionsmaterial i vardagskläder." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-239.
The purpose of this paper is to find the different factors and risks that affect the buying decision for a consumer when being faced with an innovative product. The study can contribute with knowledge and an understanding for companies that are looking to develop this type of products. The focus and purpose was developed in cooperation with the textile company FOV Fabrics. With the purpose and the problematics as a basis, a survey was completed alongside semi-structured interviews with four of the respondents from the survey. The result from the survey was analyzed and compared with the results from the interviews. All of the respondents were divided into two groups, adopters and non-adopters, based on if they wanted to adopt the product in question or not. The two groups were analyzed and compared to reach an understanding to why consumers choose to adopt new products and why some of them do not. The study showed that adoption of new products is not something that can be defined for all products, as the process differentiates between product categories. This study only shows what the buying decision process looks like for a shirt made of functional material, which can be translated to another garment with the same material, but not through other product categories. The study also showed that the adopters are consisting of innovators and early adopters, which are most receptive to new innovations. They are technical, function- oriented individuals. Besides the functions in the shirt (water repellant, stain resistant, non-iron, anti-bacterial) they value fit, comfort and design in garments. The innovators should adopt the product so it can be accepted by the majority of the consumers later on. To achieve an adoption by the skeptical consumers, reliability is an important factor and a brand that the consumer can trust, if the knowledge and information about the product is not sufficient enough. Please note that the paper is written in Swedish.
Bodén, Birgitta. "MAS-sten som ett möjligt material för att minska föroreningarna från deponin i Karlslund : Undersökning av nya tillämpningsområden för slagg från stålindustrin." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-209601.
As a result of the harsh exploitation and development of our society, a large amount of natural resources are needed. While the society develops it becomes more and more important to economise natural resources. This is also stated as an environmental objective, called "A good built environment" by the Swedish government. According to this environmental objective, the use of both land and natural resources should be undertaken in the most sustainable way possible. At the same time the Swedish steel industry produces over one million tonnes of slag annually, which is mostly deposited. Slag is a byproduct from the steel manufacturing process. When disposal is costly, many attempts to find usage for slag are done instead. For instance, in some cases it has been as replacement for natural resources as stone, gravel and sand in road constructions and landfill covers. Slag has also been shown to have a water-purifying capacity since contamination can be sorbed by the slag. This has led to attempts to use slag as filter material in reactive filters where sand traditionally is widely used. This study aimed to investigate whether slag from Avesta Works could be used in reactivefilters to purify water that is contaminated with heavy metals and phosphorus. This was done by shaking a number of slags produced in Avesta with leachate water from amunicipal landfill, Karlslund. The leachate water needs to be purified from i.a. fluorine, phosphorus, cadmium, chloride, nickel and zinc. In the experiments an EAF slag and two AOD slags were used. To investigate if the sorption of contamination in the leachate water was affected by the age of the particle surfaces, both slags with freshly made and aged surfaces were tested. The aging of the slags was created by placing the slags outdoor for 71 days. The results showed that the slags formed at Avesta Works has a water-purifying ability and that all of the tested slags sorbed aluminum, phosphorus and zinc. Beside these substances, some of the slags also sorbed arsenic, fluorine, copper and magnesium. Theresults also showed a time-dependence of the sorption: More contaminations were sorbed after reacting slag and leachate water for five days compared with fifteen minutes or four hours. It was not possible to determine if the slags with fresh surfaces sorbed better than the slags with aged surfaces. Calculations showed that a filter containing slag should be possible to build dimensionally and that the grain size of sand would be needed to get the required retention time.
Fogelström, Jennie. "Nya frisörers utmaningar : - Ser nyexaminerade frisörer håret eller kunden i helhet som arbetsmaterial?" Thesis, Linnéuniversitetet, Institutionen för teknik, TEK, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-22016.
The use of chemical substances that negatively affect the biological composition of hair has increased, leading to more mistreatments in salons and hair studios. This has, consequently, led to questions arising from educators within the field regarding the knowledge levels of newly-trained hairdressers/stylists relative to the potential reactions of customers’ hair and the increasing use of preparative substances. Research and development conducted in the general field of hair-care is plentiful due to the huge level of production within the industry. Questions remain unanswered, however, in terms of whether those using the products within the profession have the relevant knowledge and/or if this knowledge is applied practically. The focus of this study is threefold: The customer; a whole (an entirety) or just hair The strengths and weaknesses of teaching within this field The pre-requisites for practicing the profession Results indicate respondents’ experiences in the relevant areas dependent upon educational focus points. Furthermore, results show disparities in the understanding of pre-requisites concerning the chemical treatment of customer’s hair dependent on the school attended. A differentiation can also be seen practically, dependent on the variety of approaches and attitudes towards hair within salons offering practical placements. Experiences within the processes of learning show views of what are considered good or bad teaching styles. Belief in the employment potential within the industry is a debatable issue. The discussion has a comparative format; results herein are placed in contrast to the industry and in relation to the perspective of the school/educational institutions.
Carlstein, Gustav. "Kejsarens Nya Kläder : En studie i hur användandet av textila material på ett okonventionellt sätt påverkar möbler och dess relation till rum och användare." Thesis, Linköpings universitet, Malmstens Linköpings universitet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177377.
Nitschke, Mattias. "“Nya gröna vågen”- the new back-to-the-landers : Growing new pathways to the future." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-397898.
Karlsson, Erik. "Vad skola vi göra med litteraturen? : En studie av de nya styrdokumenten samt ett urval av läromedel och deras föreställningar om och legitimeringar av skönlitteratur i det svenska skolsystemet." Thesis, Högskolan i Halmstad, Sektionen för lärarutbildning (LUT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-22067.
Jonsäll, Hans. "Välsignad förbannelse : En retorisk analys av bibliskt material i Black Metallyrik." Thesis, Uppsala universitet, Gamla testamentets exegetik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-266925.
Magsombol, Anacleto M. "Navy Stock Account (NSA) material expenditure errors." Thesis, Monterey, California. Naval Postgraduate School, 1990. http://hdl.handle.net/10945/37518.
This thesis was an investigation of the causes that prevented large numbers of Pacific Fleet units' NSA expenditures from processing through the Fleet Resource Accounting Module (FRAM) at the Fleet Accounting and Disbursing Center Pacific (FAADCPAC), San Diego, CA. Six consecutive months' NSA expenditure errors from December 1989 to May 1990 were used in the analysis. The researcher concluded that the major cause of the problem was the use of wrong fund codes by the fleet units when they requisitioned their materials from the shore supply activities. The researcher identified inadequate training of shipboard supply personnel and the lack of an edit/validation process at the shore supply activities, as the major deficiencies. Recommendations designed to prevent large numbers of NSA expenditure errors and to improve the current accounting system were provided.
Silva, Yankel Bruno Fontes. "Estudo da zirc?nia refor?ado com alumina." Universidade Federal do Rio Grande do Norte, 2008. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12685.
Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
Ceramics materials have good properties including chemical stability, high hardness and wear resistance. Moreover, due to its fragility, can suffer failure under relatively low levels of tension. Actually zirconia is the material of choice in metal free dental prostheses used in dentistry due its inertia in physiological environment, good bending strength, hardness and fracture toughness. The alumina and mixed tungsten and titanium carbides additions, acting as reinforcement elements in the zirconia matrix, have as their main objective the improvement of mechanical properties of this material. In this work, samples of zirconia, zirconia with 30% wt of alumina and zirconia with 30% wt mixed carbides were analyzed. The samples were sintered by uniaxial hot pressing on 30 MPa pressure, for 1 hour in an argon atmosphere. They were physically characterized by porosity and density measurements, and mechanically by 3-points bending strength and Vickers microhardness. The X-ray diffraction was used for the phase identifications and microstructure was examined by scanning electron microscopy (SEM). The addition of mixed carbides as reinforcement elements in zirconia matrix provides improvements in all properties analyzed in this work. The alumina addition has dropped the zirconia strength, although it caused improvement in other properties
Materiais cer?micos apresentam boas propriedades incluindo estabilidade qu?mica, elevada dureza e resist?ncia ao desgaste. Por outro lado, devido a sua fragilidade, podem sofrer falha sob n?veis de tens?es relativamente baixos. A zirc?nia ? hoje o material de escolha em odontologia para o uso em pr?teses dentais do tipo metal free por ser inerte em meio fisiol?gico, apresentar boa resist?ncia ? flex?o, dureza e tenacidade ? fratura. A adi??o da alumina e dos carbetos mistos de tungst?nio e tit?nio ,atuando como elementos de refor?o na matriz de zirc?nia, t?m como principal objetivo o aperfei?oamento das propriedades mec?nicas deste material. No presente trabalho, foram analisadas amostras de: zirc?nia, zirc?nia com 30% em peso de alumina e zirc?nia com 30% em peso de carbetos mistos. Os corpos de prova foram sinterizados por prensagem a quente uniaxial, sobre press?o de 30 MPa, durante 1 hora em atmosfera de arg?nio. Os mesmos foram caracterizados fisicamente por meio de medidas de porosidade e de densidade, e mecanicamente por resist?ncia a flex?o em 3 pontos e microdureza Vickers. A difra??o de raios X foi utilizada para a identifica??o das fases presentes e a microestrutura foi analisada por microscopia eletr?nica de varredura (MEV). A adi??o dos carbetos mistos como elemento de refor?o da matriz de zirc?nia ocasionou uma melhoria em todas as propriedades analisadas neste trabalho. A adi??o da alumina proporcionou uma queda na resist?ncia mec?nica da zirc?nia, apesar de ter ocasionado melhora nas demais propriedades
Edqvist, Helena. "Hide and seek : Ett utforskande av nya materialupplevelser i ull." Thesis, Högskolan i Gävle, Avdelningen för industriell ekonomi, industridesign och maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-30426.
The information that wool is burned in quantities while we are importing wool speaks its clearlanguage, something needs to be done. Wool, which is a durable and 100% renewablematerial with both historical connections as well as fantastic properties, is a huge waste ofresources to burn as if it were rubbish. From a sustainability perspective as well as a personal interest, based on my years as astylist, I have investigated the sensual properties of the wool to find new materialexperiences in one of the world's oldest textile materials. The climate issue that is mostup-to-date, which we all have to relate to in one way or another, and that I want to make myresearch available to everyone, means that my work is relevant from a sustainabilityperspective. I have worked from a material-driven design, where the meaning of the material has beenimportant in order to weave the emotional connection to a material. With an artisticapproach, I wanted to take on my work in exploring, evaluating and questioning myself andmy work in a material-driven process, in which I turn materials and user tests to contributewith new material experiences of wool. I hope that my work contributes to seeing Swedishwool with new eyes. With new associations and perspectives. To see opportunities insteadof impossibilities.
Larsson, Stina, and Maria Nilsson. "Motiverade lärare ger motiverade elever! : En studie av matematikundervisningen i Nya Zeeland." Thesis, Umeå University, Mathematics and Mathematical Statistics, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1121.
Under vår lärarutbildning på universitetet har matematik fått en helt annan innebörd än tidigare, ämnet har gått ifrån att vara abstrakt till mer konkret. När vi kommer som färdigutbildade lärare vill vi skapa en matematikundervisning som är motiverande för eleverna. Eftersom Nya Zeeland är ett framgångsrikt land i läs- och skrivinlärning, valde vi att genomföra en studie på hur några lärare i Nya Zeeland motiverar och skapar lust att lära i matematik. Syftet med vårt examensarbete är att ta reda på vad tre lärare i Nya Zeeland anser skapar detta i matematik. För att besvara våra frågeställningar utförde vi intervjuer och två skilda observationer vid flertal tillfällen på en skola i Nya Zeeland. I bakgrunden har vi gjort en studie på internationella och nationella undersökningar för att se om svenska elever har motivation och lust att lära i matematik samt tagit med våra egna erfarenheter ifrån skoltiden och vår verksamhetsförlagda utbildning (VFU). I det nya zeeländska styrdokumentet står det inget specifikt om motivation och lust att lära, utan lärarna får göra sina egna tolkningar. Resultatet visar att elever i den nya zeeländska skolan är motiverade och har lust att lära i matematik, men mycket beror på dagsformen.
Skoglöv, Suzanne, and Anna Edlund. "Nya avskrivningsregler i IFRS - ger komponentavskrivning en mer rättvisande bild av periodisering av kostnader?" Thesis, University of Gävle, Department of Business Administration and Economics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-71.
Syfte: Huvudsyftet med denna uppsats är att utröna om komponentavskrivning ger en mer rättvisande bild av periodisering av kostnader.
För att uppfylla huvudsyftet har vi fyra delsyften, det första är att redogöra för vad regelverket och experterna anser om ämnet. Det andra är att undersöka om komponentavskrivning uppfyller de kvalitativa kriterierna genom en bättre kvalitet på redovisningen. Det tredje är att illustrera de för- och nackdelar som finns i och med komponentavskrivning. Det fjärde vill belysa hur det kommer sig att vissa företag väljer att tillämpa anskaffningsvärdemetoden med avskrivningar, komponentavskrivning, medan andra väljer att redovisa till verkligt värde.
Object: The main purpose with this thesis is to determine whether component depreciation gives a more true and fair view of amortization of costs.
To fulfil the main purpose we have four sub purposes, where the first is to state views from the accounting rules and the expertise regarding this topic. The second sub purpose is to investigate if component depreciation meets the qualitative criteria as a better quality in accounting. The third sub purpose is to illustrate the advantages and disadvantages with component depreciation. The fourth sub purpose will show how certain companies chose to use historic cost depreciation, component depreciation, while other chose to prepare their accounts according to the fair value method
Rowe, Andrea Helen. "Reconsidering Late Roman Cyprus: Using new material from Nea Paphos to review current artefact typologies." University of Sydney. Department of Classical Archaeology, 2005. http://hdl.handle.net/2123/684.
Rowe, Andrea H. "Reconsidering late Roman Cyprus using new material from Nea Paphos to review current artefact typologies /." Connect to full text, 2004. http://hdl.handle.net/2123/684.
Title from title screen (viewed 22 May 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the Dept. of Classical Archaeology, Faculty of Arts. Degree awarded 2005; thesis submitted 2004. Includes bibliographical references. Also available in print form.
Aguilar-Mamani, Wilson. "Crystallization of NBA-ZSM-5 from kaolin." Doctoral thesis, Luleå tekniska universitet, Kemiteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-63169.
Tunström, Isabelle. "NTA-materialet som stöd för systematiska undersökningar i NO-undervisningen : En studie om elevernas möjligheter att utveckla förmågan att genomföra systematiska undersökningar med NTA-materialet i årskurs F-3." Thesis, Högskolan Dalarna, Institutionen för lärarutbildning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:du-36909.
NO
Karlsson, Maria. "Aha... är det så de tänker! En studie av hur lärare i ett arbetslag förändras när ett nytt koncept tas in i den naturvetenskapliga undervisningen." Thesis, Linköping University, Department of Thematic Studies, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2276.
Detta är ett arbete som visar utvecklingen hos lärare i ett arbetslag som under två terminer har arbetet med temaenheter i NTA-projektet. NTA, Naturvetenskap och Teknik för Alla, är ett projekt som skall locka elever till ett naturvetenskapligt in-tresse. I projektet finns handledning till läraren och all materiel som behövs för arbete under tio veckor med en temaenhet. Syftet med arbetet är att undersöka vilka förändringar som sker inom ett arbetslag när ett nytt koncept tas in i den naturvetenskapliga undervisning. Tidigare forskning visar att framtidens lärare måste vara flexibla och kunna planera undervisningen efter en målstyrd läroplan. För att lyckas med det måste lärare se utveckling och kunskapstörst som en livs-lång procedur. För att uppnå syftet med arbetet har intervjuer genomförts med lä-rare i ett arbetslag som sedan våren -02 deltagit i NTA-projektet. Bearbetning och analys har gjorts kvalitativt. Resultatet visar att lärare som deltar i projektet har hittat ett nytt sätt att arbeta i den naturvetenskapliga undervisningen. De har fått mer ämneskunskaper, de ser hur eleverna lär och de reflekterar på ett annat sätt över sin egen un-dervisning. De har också blivit starkare i sin roll som lärare och vågar mer, samt slipper leta efter materiel.
Dantas, Débora Cristina Barbosa. "Avaliação da influência do agente de cimentação na cor imediata e pós-envelhecimento de materiais restauradores indiretos /." São Jose dos Campos, 2016. http://hdl.handle.net/11449/133953.
Co-orientador: Taciana Marco Ferraz Caneppele
Banca: Sérgio Eduardo de Paiva Gonçalves
Banca: Priscila Christiane Suzy Liporoni
Resumo: O objetivo do estudo foi avaliar a estabilidade de cor, translucidez e brilho de dois materiais para restaurações indiretas: cerâmica feldspática e resina nano cerâmica (RNC), cimentadas com: cimento resinoso fotoativado e resina Flow, após serem submetidos a envelhecimento acelerado. Foram confeccionados quarenta discos de cada material restaurador distribuídos em subgrupos de acordo com: espessura do disco e material de cimentação utilizado. Os espécimes foram submetidos a três medições: inicial, antes e após envelhecimento. Para as medidas de cor e translucidez foi utilizado o espectrofotômetro de refletância. Para as medidas de brilho o aparelho Novo Curve (Rhopoint TM, East Sussex, England). O envelhecimento foi realizado no equipamento Suntest CPS+ (Atlas Material Testing Technology GmbH, Linsengericht, Hesse, Germany) com parâmetros adotados que corresponderam a um ano de envelhecimento. A análise estatística dos dados foi através de ANOVA três fatores e teste de Tukey (5%). Os resultados demonstraram que para a cor, o material e a espessura influenciaram, sendo a cerâmica feldspática, o material que apresentou menores valores de variação de cor. Para a translucidez, o material, a espessura, o tempo e as interações: cimento+espessura, tempo+material e tempo+material+espessura, foram fatores estatisticamente significantes. A resina nano cerâmica foi mais translúcida. Para o brilho, o material, o cimento e o tempo foram fatores estatisticamente significantes, sendo que a resina nano cerâmica apresentou maior brilho. Esse resultado também foi obtido com o cimento resinoso fotoativado na avaliação do brilho
Abstract: The aim of the study was to evaluate color stability, translucency and brightness of two materials for indirect restorations: feldspatic ceramic and a nano ceramic resin, cemented with: light- curing resin cement and Flowable composite resin, after being subjected to artificial accelerated aging. Forty discs were made of each restorative material distributed in subgroups according to: thickness and cementing material used. The specimens were submitted to three measurements: initial, before and after aging. For color measurements and translucency a reflectance spectrophotometer was used. For brightness measures the New Curve device (Tm Rhopoint, East Sussex, England) was used. Aging was conducted at Suntest CPS + equipment (Atlas Material Testing Technology GmbH, Linsengericht, Hesse, Germany) with adopted parameters corresponding to one year of aging. Statistical analysis was by ANOVA three factors and Tukey test (5%). The results showed that color variation was influenced by material and thickness. Feldspatic ceramic with 1.00 mm thickness was the material that showed less color variation. For translucency, cement+thickness, material+time and time+thickness+material, were statistically significant factors. Nano ceramic resin was the most translucent material. For brightness, material, cement and time were statistically significant factors, and the nano ceramic resin showed higher brightness. This result was also obtained with resin cement for brightness
Mestre
Peixoto, Milena Sim?es. "An?lise do estresse oxidativo e morte celular por material particulado da queima da Amaz?nia e compostos isolados." PROGRAMA DE P?S-GRADUA??O EM BIOQU?MICA, 2016. https://repositorio.ufrn.br/jspui/handle/123456789/22451.
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Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq)
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)
A polui??o atmosf?rica ? um fator de risco ambiental, e consequentemente, um problema a sa?de. Diversas subst?ncias s?o lan?adas diariamente por meio de atividades antropog?nicas ou naturais, tornando o ar impr?prio e nocivo ao bem-estar de seres humanos e prejudicial ? fauna e ? flora. Na regi?o amaz?nica, os desmatamentos e as queimadas t?m causado preju?zos para a popula??o exposta. Estudos demonstram que essas part?culas presentes no ar causam s?rios problemas respirat?rios e cardiovasculares, incluindo danos ao DNA. Diante disso, o objetivo desse estudo foi avaliar o estresse oxidativo, a integridade mitocondrial e morte celular desencadeados por compostos org?nicos do material particulado menor que 10 ?m (MP10) oriundos da queima de biomassa da floresta Amaz?nica, assim como os efeitos do reteno, marcador de queima de biomassa, em c?lulas epiteliais do pulm?o humano (A549). Para tal, foi avaliado a forma??o de esp?cies reativas de oxig?nio (ERO) com os corantes DCF e MitoSOX e o processo de autofagia por express?o e distribui??o das isoformas da prote?na LC3, marcadora de autofagossomo maduro, em c?lulas A549 expostas a 200 ?g/mL e 400 ?g/mL de MP10 nos tempos de 24 h e 72 h. Da mesma forma, foi analisado os efeitos do reteno sobre estresse oxidativo nas concentra??es de 3,3 ng/mL, 10 ng/mL e 30 ng/mL. Tamb?m foi observado a fun??o mitocondrial com TMRM e Mitotracker e o processo de morte celular via marca??o por anexina e iodeto de prop?deo. Com rela??o ? fra??o org?nica do material particulado, esta induziu um aumento da produ??o de ERO intracelulares e de super?xido mitoncondrial. Al?m disso, a exposi??o ao MP10 desencadeou a forma??o de autofagossomos, sugerindo o aumento da autofagia. Nas an?lises biol?gicas com o reteno, os dados mostraram que este composto levou ao aumento de ERO e de super?xido mitocondrial, a hiperpolariza??o da membrana mitocondrial, assim como o aumento do conte?do mitocondrial em todos os tempos testodos. Por?m, o reteno s? foi capaz de induzir a morte celular na maior concentra??o utilizada e no per?odo de 72 h. Com esses resultados, ? importante enfatizar a necessidade de redu??o da emiss?o de poluentes por queima de biomassa, buscando pol?ticas de controle. Al?m disso, a toxicidade apresentada pelo reteno levanta um alerta em rela??o a inclus?o desse composto, marcador de queima de biomassa, na avalia??o de risco dos hidrocarbonetos polic?clicos arom?ticos (HPA).
In recent discussions on environmental issues, air pollution has been considered an important environmental risk factor, and, consequently, a burden to human health. Several poluents are released daily by natural or human activities, causing the air to be improper and harmful to the welfare of humans and ecosystems. In the Amazon region, deforestation and forest fires have been causing damage to the exposed population. Studies already demonstrated that airborne particles can lead to serious cardiorespiratory effects, including DNA damage. Therefore, the aim of this study was to evaluate oxidative stress, mitochondrial integrity and cell death caused by organic chemical compounds from particulate matter smaller than 10 ?m (PM10) originated from biomass burning of the Amazon forest, as well as the effects of retene, a biomass burning marker, in human lung epithelial cells (A549). It was evaluated reactive oxygen species (ROS) generation (DCF and MitoSOX) and autophagy process by expression and distribution of LC3 protein, autophagosome marker, in A549 cells exposed to 200 ?g/mL and 400 ?g/mL for 24 h and 72 h. Likewise, it was examined the effects of retene on oxidative stress on the concentrations of 3,3 ng/mL, 10 ng/mL and 30 ng/mL. Also, mitochondrial function and cell death was observed with TMRM and Mitotracker dyes and annexin and propidium iodide markers, respectifully. Regarding the extracted organic particulate matter, this led to the increased production of reactive oxygen species and intracellular mitochondrial superoxide. Additionally, PM10 exposure triggered the formation of autophagosomes, suggesting increased autophagy. In the biological analysis with retene, the data showed that this compound led to an increase in reactive oxygen species and mitochondrial superoxide, hyperpolarization of the mitochondrial membrane, as well as increased mitochondrial content at all tested times. However, the retene was only able to induce cell death in the greatest concentration used and over a 72-hour period. From these results, it is important to emphasize the reduction of emissions by biomass burning, searching for new control policies. In addition, the toxicity of the retene, a biomass burning marker, raises an alert about the inclusion of this compound in the risk assessment of polycyclic aromatic hydrocarbons (PAHs).
Jansson, Sandra, and Nathalie Larsson. "Undersökande arbete i NO : En studie om hur lågstadielärare som arbetar med NTA jämfört med andra lärare uppfattar undervisning med ett undersökande arbetssätt." Thesis, Karlstads universitet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84971.
The purpose of this study is to contribute with increased knowledge of how teachers use and perceive inquiry-based work methods as well as to see if there are any differences depending on if they use the NTA-material or not. The data was collected through qualitative interviews where ten primary school teachers were interviewed. The results shows there are no major differences in why teachers use inquiry-based work methods and/or what students will learn when the methods are used. The differences rather appeared in how the teachers used the inquiry-based work methods and what type of prerequisites that are available. Furthermore, there was a strong correlation between what methods they used and the teacher’s engagement. Lastly the teachers professional experience and subject knowledge proved to have a significant meaning when using the work method.
Abohorlu, Doğramacı Pervin. "Investigation of novel evaporative cooling material for Cyprus climate." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/53245/.
Persegueiro, Kelcilene Gisela. "Olhar caleidoscópico : a experiência do cinema como prática pedagógica /." Rio Claro, 2017. http://hdl.handle.net/11449/151874.
Banca: João Pedro Pezato
Banca: Claudia Beatriz de Castro Nascimento Ometto
Resumo: O presente trabalho de dissertação de mestrado consistiu em uma pesquisa de campo realizada em uma Escola Municipal de Piracicaba-SP, em que atuava como professora substituta, do 1º ano, em uma sala com 22 crianças, com idade entre 6 e 7 anos, do Ensino Fundamental I. Esta pesquisa apresenta oito oficinas de desenhos animados inspirados nos episódios do Sítio do Pica Pau Amarelo de Monteiro Lobato. Durante esse processo entendeu-se a necessidade de apresentar novos olhares para as práticas pedagógicas, que foram construídas sem camisa de força, a partir das tendências progressistas, que dispuseram mais de quinze práticas pedagógicas calcadas no diálogo, de acordo com a prática educativa Libertária de Paulo Freire (1977). A partir do encontro do cinema na escola foram levantadas as seguintes questões de pesquisa: 1. Que práticas pedagógicas podem ser fomentadas a partir do cinema na escola com crianças do ensino fundamental, ciclo I? 2. A experiência do cinema na escola é capaz de construir uma educação como prática educativa libertária (liberdade em construção) a partir do pensamento de Paulo Freire? 3. Que produções de conhecimentos por parte dos alunos, a partir do cinema, atestam a prática da liberdade e autonomia? Esses problemas desencadearam nossos objetivos, que são: a. Compreender que tipo de práticas pedagógicas podem ser construídas a partir da experiência do cinema e de que maneira podem promover/ criar/afetar/ transmitir/ transformar os alunos e estimular a produ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The present work consists of researching in a Municipal School of Piracicaba-SP, in which the researcher acted, as a substitute teacher, of the 1st YEAR, in a classroom with 22 children, aged 6 And 7 years of Elementary School- Cycle 1. This research presents seven short film workshops that aims to work with children in cartoon films, based on and inspired by the episodes of the Pica Pau Amarelo site in Monteiro Lobato, with the aim of think of the following research questions: 1. What pedagogical practices can be promoted from the cinema in the school with elementary school children, cycle I? 2. Is the experience of cinema in school capable of constructing an education as an educational practice of the libertarian (freedom under construction) from the thought of Paulo Freire ? 3. What productions of knowledge on the part of the students, from the cinema, attest to the practice of freedom and autonomy? These problems have triggered our goals, which are: a. Understand what kind of pedagogical practices can be built from the experience of cinema and how they can promote / create / affect / transmit / transform students and stimulate the production of knowledge; B. Check how the relationship of children with films leads to a learning that allows a world reading in which children's previous experiences add to the experience of the cinema. We believe that cinema within schools offers opportunities for learning, otherness and art, so we held the film workshops to promote new possibilities and identified the peculiarities in the way children received the experience of cinema and what provoked / captivated Children after each workshop. As cinema is something essential in the construction of pedagogical practices, cinema is highlighted as a way of playing, emphasized by Fresquet (2013) and the identification of otherness, through the perspective of Alain Bergala (2008). In order to complement ... (Complete abstract click electronic access below)
Mestre
Phung, Thi Thuy Nga [Verfasser], Dieter [Akademischer Betreuer] Neher, Antonio [Akademischer Betreuer] Abate, and Iván [Akademischer Betreuer] Mora-Seró. "Defect chemistry in halide perovskites : material characterisation and device integration / Thi Thuy Nga Phung ; Dieter Neher, Antonio Abate, Iván Mora-Seró." Potsdam : Universität Potsdam, 2020. http://d-nb.info/1219911461/34.
Allehyani, Esam. "Synthesis and Characterization of PEO-PS-PEO Triblock Copolymer Conjugated with Ni-NTA for Biosensors." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2018. http://digitalcommons.auctr.edu/cauetds/157.
Neves, Daniela da Costa. "Reorientação curricular na RME-SP: a utilização dos cadernos de apoio e aprendizagem por alunos e professores do ciclo I - análise da integração entre mídia e currículo." Pontifícia Universidade Católica de São Paulo, 2011. https://tede2.pucsp.br/handle/handle/9628.
This research started from seeking the need for actions by the Secretaria Municipal de Educação de São Paulo that would give subsidies to teaching materials and also to the process of training of teachers of elementary school with different skills (Ensino Fundamental I), in view of needing for materials that were aligned with the curriculum reorientation implemented in 2008 and the difficulties presented by students in results of external evaluations conducted from 2007. The plot of this research were the Cadernos de apoio e aprendizagem, produced by the Secretaria Municipal de Educação in partnership with Padre Anchieta Foundation, whose use by teachers and students from public schools began in 2010. This material consists of teacher`s and students books and videos that integrate the activities proposed in the printed material. Our goal was to demonstrate if the Cadernos de apoio e aprendizagem subsidized the educational practices and how they did it, highlighting the contributions and challenges perceived by elementary school students and teachers in their work integrating media and curriculum. Twenty eight teachers and a hundred students from five schools belonging to the Departaments of educational of Butantã, Campo Limpo and Penha from elementary school were interviewed. The techniques for data collection were questionnaires with structured and semi-structured questions and class observations. For the data analysis the option was for the qualitative approach, extracting the central idea of the issues and the cluster of categories by convergences. Analysis and interpretation of data demonstrated that the use of Cadernos de apoio e aprendizagem facilitated the preparation of the syllabus by the teacher, aroused to the interest of the student to learn both graphical format for printed material and by integration with the videos, made the teaching / learning process more meaningful by addressing issues related to the daily lives of students and to São Paulo city and favored a more effective dynamic range and methodological strategies. Among the challenges faced by teachers are the adequacy of school time, overcoming the setbacks caused by delays in delivery of materials, the video display, for lack of sufficient equipment in some schools and carry out the suitability of the material to students with difficulties and learning disabilities. In the end the conclusion was that the Cadernos de apoio e aprendizagem subsidized educational practices, providing an integrated curriculum among the public schools and with the use of media in education
Esta pesquisa partiu da constatação da necessidade de ações por parte da Secretaria Municipal de Educação de São Paulo que dessem subsídios materiais ao trabalho docente e também ao processo de formação contínua dos professores polivalentes do Ensino Fundamental I, tendo em vista a necessidade de materiais que estivessem alinhados com a reorientação curricular implementada em 2008 e as dificuldades apresentadas pelos alunos nos resultados das avaliações externas realizadas a partir de 2007. Foram objetos desta pesquisa os Cadernos de apoio e aprendizagem, produzidos pela Secretaria Municipal de Educação em parceria com a Fundação Padre Anchieta, cuja utilização pelos professores e alunos das escolas da Rede teve início em 2010. Este material é composto por cadernos para o professor, cadernos para o aluno e vídeos que se integram às atividades propostas no material impresso. Nosso objetivo foi demonstrar se os Cadernos de apoio e aprendizagem subsidiaram as práticas educacionais e como o fizeram, explicitando as contribuições e desafios percebidos por alunos e professores do ciclo I no desenvolvimento do trabalho integrando mídia e currículo. Os sujeitos investigados foram vinte e oito professores e cem alunos do Ciclo I, de cinco escolas pertencentes às Diretorias Regionais do Butantã, Campo Limpo e Penha. As técnicas para recolha dos dados foram questionários com questões estruturadas e semi-estruturadas e observações de aulas. Para a análise dos dados optou-se pela abordagem qualitativa, extraindo-se a idéia central das questões e agrupando por convergências em categorias. A análise e interpretação dos dados demonstraram que a utilização dos Cadernos de apoio e aprendizagem facilitaram a elaboração do plano de ensino pelo professor, despertaram o interesse do aluno para a aprendizagem tanto pela formatação gráfica do material impresso quanto pela integração com os vídeos, tornaram o processo de ensino/aprendizagem mais significativo por abordar temas relacionados ao cotidiano dos alunos e à Cidade de São Paulo e favoreceram uma variação mais eficaz das dinâmicas e estratégias metodológicas. Entre os desafios enfrentados pelos professores estão a adequação do tempo escolar, superando os desarranjos provocados pelos atrasos na entrega dos materiais, a exibição do vídeo, por carências de equipamento em número suficiente em algumas escolas e realizar a adequação do material aos alunos com dificuldades de aprendizagem e com deficiência. Concluiu-se que os Cadernos de apoio e aprendizagem subsidiaram as práticas educativas, propiciando um trabalho integrado com a proposta curricular da Rede e com o uso das mídias na educação
Santos, Tatiana de Lima Pedrosa. "Arqueologia e interpreta??o : a cria??o de dois modelos arqueol?gicos para a Amaz?nia." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2008. http://tede2.pucrs.br/tede2/handle/tede/2248.
Essa disserta??o apresenta uma nova perspectiva da Arqueologia dando destaque ?s rela??es entre textos e objetos. Busca verificar o entendimento de como se deu a cria??o de dois modelos arqueol?gicos para a Amaz?nia: nas interpreta??es dos trabalhos de B. J. Meggers e A. C. Roosevelt.
Niekraszewicz, Liana Appel Boufleur. "Microanálise com feixes de íons : caracterização de elementos leves em materiais via micro-NRA e micro-PIXE." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/108537.
A couple of years ago, the Ion Implantation Laboratory (LII) at IF- UFRGS installed a microprobe station and ever since it has been under development. This is the first and unique ion microprobe station installed in Brazil and therefore it is of great interest to make it efficient and available to the scientific community. Some techniques are well developed in the microbeam station: micro-PIXE, STIM and proton beam writing. A wide variety of techniques based on broad ion beams stimulates further work for the implementation of such techniques for the case where the beam spot size is of the order of few micrometers. The study of the micro-NRA technique (Nuclear Reaction Analysis) is important since it can be used for the detection of light elements that are not detected with the techniques already in operation at the microprobe station. Such elements, such as carbon, nitrogen and oxygen are the major constituents of most materials under study in LII. In this study, we present the experimental parameters as well as the analytical results obtained with the micro-NRA technique. A preliminary assessment suggests that the technique has a great potential for the characterization and mapping of carbon, while the results for oxygen and nitrogen indicate the need for a complementary technique. Additionally, the results obtained with micro-NRA were compared with the results from measurements with micro-PIXE obtained with a SDD detector with ultra-thin window. An evaluation of the elemental maps obtained by the two techniques indicates that the measurements made with micro-PIXE provide results with better statistics and elemental maps with higher quality.
Zanaga, Mariangela Pisoni. "Conteudos abertos na educação : motivações e visão de autoria." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/253216.
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Educação
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Resumo: A aplicação da filosofia de conteúdos abertos no campo da educação e do compartilhamento social para a criação de materiais de interesse educacional por professores na Internet é aqui proposta em decorrência de um trabalho de pesquisa realizado. Bens culturais, como os materiais de interesse educacional, são propícios para serem produzidos através de processos de compartilhamento social. Conteúdos abertos são trabalhos de criação publicados sob licenças de uso que flexibilizam os direitos autorais consolidados em leis nacionais e internacionais. No Brasil, em particular, já se trabalha com licenças de uso mais flexível. O compartilhamento social consiste na produção coletiva de bens a partir da capacidade criativa pessoal e de motivação interna, potencializada pelas tecnologias de informação e de comunicação. Como uma das atividades inerentes à atuação docente é a produção de materiais de interesse educacional, professores em exercício de escolas públicas da Região Metropolitana de Campinas atuantes no ensino infantil e fundamental foram apresentados à possibilidade de publicar e de compartilhar materiais na Internet. As opiniões destes professores foram obtidas através de questionário seguidas por entrevistas, demonstrando que há uma produção de materiais de interesse educacional, apesar da formação limitada recebida neste assunto. A produção individual e coletiva e o compartilhamento de materiais se dão a partir de motivações sociais e também são práticas correntes modificações em materiais utilizados, produzidos por outros. Os professores, contudo, ainda não se vêem como autores e eles utilizam a Internet somente para busca de informações. Licenças flexibilizadas de uso atendem às necessidades formais de compartilhamento por parte dos professores. O registro de criações próprias, no entanto, não é ainda uma prática difundida entre eles. Constatou-se a existência de condições facilitadoras para a aplicação da filosofia de conteúdos abertos e de compartilhamento social junto a professores para a produção de materiais de interesse educacional. Há, porém, uma necessidade de se incentivar algumas iniciativas específicas para que a proposta aqui colocada se efetive
Abstract: The application of the the open content philosophy in the educational field and the social sharing to the creation of contents of educational interest by teachers in Internet is here being proposed. Cultural goods, like the contents of educational interest, are suitable to be produced by social-sharing processes. Open contents are creative works published under licenses of use with a greater flexibility than the ones of the copyright consolidated in national and international laws. More flexible licenses are already being used in Brazil. The social sharing consists of a collective production of goods based on individual creative capacities and internal motivation and it is boosted by information and communication technologies. As the production of contents of educational interest is one of the activities in teaching, teachers of public schools of the Metropolitan Region of Campinas performing their duties at preschool and fundamental education level were exposed to the possibility of publishing and sharing of contents on the Internet. The opinions of those teachers were gathered via a questionnaire followed by interviews and the results demonstrated that a production of contents of educational interest exists despite their limited qualification in such matters. The individual and collective production and the sharing of contents have its origin in social motivation and the adapting of used contents that have been produced by others are current practices as well. The teachers, however, do not see themselves as authors and they use the Internet solely to search for information. More flexible licenses of use satisfy the sharing formal demands of teachers. The recording of creations is, nevertheless, not yet a wide-spread practice among them. Enabling conditions for the application of the philosophy of open contents and social sharing to the production of contents of educational interest have been identified amidst teachers. Yet it is necessary to encourage some specific initiatives in order to make the proposal presented here become effective
Doutorado
Educação, Ciencia e Tecnologia
Doutor em Educação
Parikh, Anuja V. "Numerical Analysis of Diffusion In Crystalline And Polycrystalline Materials-Application to PhotoVoltaics." Bowling Green State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1540382764897629.
Strauss, Florian. "Insertion cathode materials based on borate compounds." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066577/document.
The increased need of energy storage via Li- and Na-ion batteries requires a continuous search for new cathode materials having higher energy density and being safe and sustainable. Thus, we explored borate based compounds capable of reacting with Li/ Na-ions in a reversible way either through topotactic- or conversion reactions. We focused on candidates with polyborate anions, that are expected to show elevated redox potentials compared to BO3 based materials. Using Li6CuB4O10 as a model compound we showed the possibility to achieve redox potentials of 4.2 and 3.9 V vs Li for the α- and β-polymorphs. The redox activity was rationalized through EPR spectroscopy and DFT calculations. We further reveal the structural/ synthetic relation between the two polymorphs and show a high ionic conductivity of 1.4 mS/cm at 500°C for a HT form of α-Li6CuB4O10. Moreover we were able to prepare two new sodium 3d-metal pentaborates Na3MB5O10 (M = Fe, Co). For M = Fe we observed a reversible Na intercalation at an average potential of 2.5 V vs Na, whereas Na3CoB5O10 turned out to be electrochemical inactive. Deviating from classical insertion/ deinsertion compounds, we studied the electrochemical driven reaction of a bismuth oxyborate Bi4B2O9 versus Li through electrochemical measurements combined with XRD and TEM. We found that it is possible to reversible cycle this material between 1.7 and 3.5 V with an redox potential of ~2.3 V vs Li with only 5wt% carbon and a small polarization ~300 mV. Owing to the complexity of 3d-metal borate chemistry encountered through this PhD, the chances of having a borate based positive electrode for next generation Li-ion batteries is rather slim
Simsek, Aslihan. "Tectonic Expression Of Concrete As An Architectural Material." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613805/index.pdf.
s tectonic potentials is to rescue it from its bad connotations and reveal it as an architectural tool instead of being mere constructional mean for an end. In order to explore aesthetic qualities of concrete as a part of architectural production, the scrutiny of tectonic theories provide a conceptual framework for a contemporary interpretation of concrete usage in architecture. Kenneth Frampton, Karl Bö
tticher, Gottfried Semper and Martin Heidegger are the key references to understand the tectonic potentials of concrete material in architecture. Within the framework of Semper'
s abstract procedures, manipulation of concrete material is analyzed through the specific examples. Structure and symbol, material and method, clear structure and joint are the consulted binary keywords related to the evaluation of tectonic aspects of concrete in architecture. By the technological developments, concrete material -both as a science and art- has been freed from the constraints of traditional production techniques and generated a field for the imaginative creations of the architect. When considered as a part of architectural design, concrete constitutes not only the "
core-form"
, but with its innate qualities revealed by the designer it transposes the building into an "
art-form"
. Constituting the structure, surface, or detail of building, concrete material has the ability to express architectural meanings behind design concept. This study attempts to identify concrete material as a value indicating to tectonic, craft, "
poiesis"
, technology connotations and emphasizes its architectural expression power.