Orientador: João Sinezio de Carvalho Campos / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica / Made available in DSpace on 2018-08-06T12:51:18Z (GMT). No. of bitstreams: 1 Quaiatti_MarceloAntonio_M.pdf: 4091133 bytes, checksum: 025e60cd474cfd2f1d279b3d35d38843 (MD5) Previous issue date: 2005 / Resumo: Os elastômeros termoplásticos do tipo SBC são copolímeros em bloco de estireno que possuem uma alta tecnologia e que possibilitam um vasto campo de aplicações. Trata-se na verdade da união das vantagens da borracha natural e do plástico, e justamente pelas inúmeras vantagens que ele apresenta, sua atuação no mercado tem se tornado crescente, justificando grandes investimentos realizados para desenvolvimentos de mercado, dentre os quais podemos destacar o mercado de adesivos que engloba aplicações bastante diversificadas, como por exemplo fitas adesivas, adesivos para industrias de móveis, adesivos para fraldas descartáveis e higiênicos, etiquetas, etc. Neste trabalho apresenta-se a utilização destes elastômeros em formulações adesivas destinadas à aplicações em adesivos sensíveis à pressão (PSA) e tem por objetivo auxiliar as pesquisas e desenvolvimentos voltados para este segmento, uma vez' que os resultados abordados neste trabalho podem auxiliar no direcionamento correto de formulações adesivas juntamente com os respectivos processos produtivos, bem como eleger o tipo correto de matéria prima ou componente a ser utilizado, dependendo do tipo de aplicação final / Abstract: The SBC thermoplastic elastomers are styrene block copolymers and combine the advantages of Natural Rubber and Plastics. Not only have a high technology, but also allow a large variety of applications and due to the mentioned advantages, its market share has been growing and justifying strong investment to be developed, and adhesives can be highlighted as it conglomerates diversified applications, as for instance adhesives tapes, adhesives to forniture ind,ustries diapers, labels, etc. This study shows the thermoplastic elastomers in adhesives formulations with the main focus on pressure sensitive adhesives (PSA), and can help future research and developments over this segment, as the results can help to achieve the right choice of the formulations and the respective malilufacturing process, and also elect the correct type of raw material to be considered, always based on the final application / Mestrado / Ciencia e Tecnologia de Materiais / Mestre em Engenharia Química

Denna studie handlar om lärares förståelse av läsundervisning samt deras tankar kring resultaten i PIRLS. Då både Sverige och England fått bättre resultat i PIRLS samt att de arbetar med olika metoder är det intressant att höra tankar kring läsundervisningen och elevers läsförmåga ifrån både svenska och engelska lärare. Detta är spännande då det i denna studie framgår att trots att lärarna i de båda änderna använder olika metoder för att främja elevers läsutveckling har de likartade tankar kring läsundervisning. För att få syn på lärares förståelse av läsundervisning analyseras lärarnas beskrivningar av läsinlärningens genomförande och mål. En kvalitativ studie genomfördes utifrån empirisk data insamlade via semistrukturerade intervjuer. I studien används sociokulturellt perspektiv för att analysera och diskutera resultatet. Resultatet visar att lärarna i just denna studie beskriver att elever läser för lite hemma samt att eleverna inte är intresserade av att läsa vilket har konsekvenser för läsundervisningen.

<p>Uklanjanje amonijaka iz podzemnih voda u cilju dobijanja<br />pijaće vode predstavlja značajan problem, koji se do sada<br />re&scaron;avao primenom različitih postupaka. Poznato je da zeoliti<br />kao prirodni jonoizmenjivači i adsorbenti kvalitetno vezuju<br />amonijum jone u svoju alumosilikatnu matricu. Njihova<br />efektivnost, u različitim tehnolo&scaron;kim procesima, zavisi od<br />fizičko-hemijskih osobina, koje su usko povezane sa njihovim<br />geolo&scaron;kim nalazi&scaron;tima, kada se govori o prirodnim zeolitima.<br />Pored prirodnih zeolita u praksi se koriste i sintetički zeoliti<br />dobijeni raznim postupcima. Danas, je komercijalna primena<br />sintetičkih zeolita rasprostranjenija u odnosu na primenu<br />prirodnih, zbog čistoće kristalnih proizvoda i uniformne<br />veličina čestica. Crystal-Right&trade; (CR-100) je zeolit koji spada u<br />grupu najizdržljivijih proizvedenih minerala. Ovaj zeolit<br />podiže pH vrednost tretiranih voda, dok istvremeno smanjuje<br />tvrdoću i uklanjanja gvožđe i mangan. Ovo pode&scaron;avanje pH i<br />uklanjanje nepoželjnih mineralnih materija postiže se izvrsnim<br />osobinama ovog zeolita u pogledu filtriranja, ali i ispiranja<br />nakon primene.<br />Maksimalna količina adsorbovanog amonijaka iznosi 2,31 mg<br />(98%) i 2 mg (87%), iz model rastvora i uzorka podzemne,<br />bunarske vode, redno. Prisustvo drugih komponenti u<br />bunarskoj vodi uzrokuje promene u količini adsorbovanog<br />amonijaka na zeolitu. Najbolje uklanjanje postignuto je za<br />jone kalijuma već sa najmanjim masama upotrebljenog<br />zeolita. Nasuprot tome, joni kalcijuma i magnezijuma se pri<br />nižim vrednostima doziranja zeolita slabije uklanjaju iz<br />bunarske vode, dok sa porastom doziranja raste i efikasnost<br />uklanjanja na svim posmatranim temperaturama.<br />Izbor adsorpcione izoterme je pokazao da najbolje rezultate<br />daje Freundlich-ova adsorpcione izoterme, a rezultati<br />aproksimacije ukazuju na fizičku adsorpciju na heterogenoj<br />povr&scaron;ini. Negativne vrednosti entropije aktivacije upućuju na<br />zaključak da se radi o asocijativnoj adsorpciji amonijaka na<br />povr&scaron;inu zeolita, odnosno da postoji interakcija između<br />adsorbovanih molekula. Vrednosti entalpije aktivacije od<br />15,096 kJ/mol i 28,978 kJ/mol, za model rastvor i realan<br />sistem, redno, upućuju da se radi o endotermnom procesu,<br />&scaron;to i potvrđuju podaci o ravnotežnim koncentracijama na<br />različitim temperaturama.<br />Tokom eksperimenata izvedenih sa poluindustrijskom<br />kolonom ispunjenom zeolitom Crystal Right&trade; (tip CR-100)<br />potvrđena je efikasnost u uklanjanju zeolita iz bunarske vode.<br />Između ispitanih modela za određivanje kinetike u kolonskom uređaju najboljim se pokazao model Yoon-Nelson-a.<br />Koeficijent linearne korelacije za model Yoon-Nelson-a iznosi -<br />0,975, dok je koeficijent determinacije imao vrednosti 0,950.<br />Iako je model razvijen jednokomponentne sisteme pokazao<br />se kao zadovoljovajući iako se radi o realnom sistemu<br />podzemne bunarske vode koja sadrži brojne rastvorene<br />supstance, katjone zemnoalkalnih i alkalnih metala, huminske<br />kiseline, anjone itd. Može se primetiti da je postignuto<br />zadovoljavaće slaganje eksperimentalnih podataka o<br />vremenu probaja sloja (50%) sa Yoon-Nelson-ovim modelom,<br />eksperimentalno određeno vreme proboja sloja iznosi oko 59<br />časova, dok je modelom dobijeno vreme 62 časa. Konstanta<br />brzine Yoon-Nelson-ovog modela iznosi 0,051 1/h.</p> / <p>Removing ammonia from groundwater to obtain drinking<br />water is an important issue, which is so far solved using<br />different methods. It is known that zeolites as natural ion<br />exchangers and adsorbents that bind ammonium ions in its<br />aluminosilicate matrix. Their effectiveness in various<br />technological processes depends on the physical and<br />chemical properties, which are closely related to their<br />geological sites, when it comes to natural zeolites. In addition<br />to the natural zeolites in practice synthetic zeolites are used.<br />Today, the commercial application of synthetic zeolites is<br />widespread in relation to the use of natural, due to the purity<br />of crystal products and uniform particle size. Crystal-Right &trade;<br />(CR-100) is a zeolite among the most durable minerals<br />produced. This zeolite raises the pH of the treated water, while<br />the same time it reduces the hardness and remove iron and<br />manganese. This pH adjustment and removal of undesirable<br />mineral substances is achieved by the excellent characteristics<br />of the zeolite in terms of filtering, and rinsing after application.<br />The maximum amount of adsorbed ammonia at 2.31 mg<br />(98%) and 2 mg (87%), from the model solution and the<br />sample of groundwater, well water, respectively. The presence<br />of other components in the well water causes changes in the<br />amount of ammonia adsorbed on zeolite. Selection of<br />adsorption isotherms showed that the best results are<br />achieved by Freundlich&#39;s adsorption isotherm, and the results<br />indicate physical adsorption on heterogeneous surfaces.<br />Negative values of entropy of activation lead to the<br />conclusion that it is associative adsorption of ammonia on the<br />surface of the zeolite, or that there is an interaction between<br />the adsorbed molecules. The values of enthalpy of activation<br />of 15,096 kJ / mol and 28,978 kJ / mol, for the model solution<br />and real system, respectively, indicating that it is an<br />endothermic process, which is confirmed by data on the<br />equilibrium concentrations at different temperatures.<br />Experiments conducted with the pilot plant column filled with<br />zeolite Crystal Right &trade; (type CR-100) confirmed the<br />effectiveness in removing zeolite from well water. Among the<br />surveyed models to determine the kinetics of the column<br />device Yoon-Nelson&#39;s model has proven to be the best. The<br />linear correlation coefficient for the model Yoon-Nelson&#39;s is -<br />0.975, and the value of the coefficient of determination was 0.950. Although the model developed for one-component<br />systems it is proved to be satisfactory for ground water<br />ammonia adsorption. The agreement between experimental<br />data on the breakthrough point at 50% concentration (59<br />hours) with Yoon-Nelson&#39;s model, is good (62 hours). Constant<br />of Yoon-Nelson&#39;s model is 0.051 1 / h.</p>

[pt] Este estudo apresenta o SVETT (Simulador Virtual de Estudo Topotático do Terreno), um simulador criado com o intuito de auxiliar, no estudo do terreno, os Oficiais-Alunos dos Curso de Aperfeiçoamento Avançado de Oficiais do Corpo de Fuzileiros Navais (C-ApA-CFN), a bordo do Centro de Instrução Almirante Sylvio de Camargo (CIASC), Unidade onde são formados, especializados ou aperfeiçoados os Fuzileiros Navais da Marinha do Brasil, que futuramente serão responsáveis pelo planejamento e condução de Operações Militares. O SVETT permite recriar uma região qualquer no globo terrestre, onde é possível inserir o aluno nessa área e, com os recursos visuais disponibilizados ao instrutor, permite maior facilidade na transmissão de seus conhecimentos, permitindo aos alunos observar detalhes antes apenas imaginados no terreno real. Este recurso funciona como um intermédio entre a teoria e a prática, majorando o conhecimento do aluno antes da sua ida ao exercício no terreno. Avaliamos o simulador com 12 usuários, sendo 7 alunos e 5 instrutores, onde obtivemos resultados positivos no que diz respeito ao processo ensino e aprendizagem. Os resultados sugerem também melhorias para que o simulador seja adequado para todo tipo de usuário, independentemente das suas características, além de uma proposta de estudos futuros. / [en] This study introduces the SVETT (Simulador Virtual de Estudo Topotático do Terreno), a simulator designed to assist, on the terrain study, the Officers-Students of the Advanced Training Course for Marine Corps Officers (ATCMCO), aboard the Centro de Instrução Almirante Sylvio de Camargo (CIASC), Unit where the Marines of the Brazilian Navy are trained, specialized or improved, which in the future will be responsible for planning and conducting Military Operations. TTSS allows one to recreate a region of any part of the globe where it is possible to position the student in that area and, with the visual aids available to the instructor, make it easier to convey the instructor s knowledge, enabling students to view details that usuall were only imagined at the real terrain. This feature acts as an intermediary resource between theory and practice, enhancing student s knowledge prior to their terrain exercise. We evaluated the simulator with 12 users, 7 students and 5 instructors, where we obtained positive results with regard to the teachinglearning process. The results also suggest improvements so that the simulator is suitable for all types of users regardless of its characteristics, in addition to a proposal for future studies.

This diploma thesis is focused to the reading comprehension of the second class pupils at a primary school. The thesis is divided into the theoretical and the practical part. The theoretical part presents the basic concepts of mapping the issues, such as reading, literacy, reading comprehension; there are also introduced the educational methods (the analytic-synthetic and genetic) and the diagnostic techniques for determining the grade of the reading comprehension in pedagogical-psychological counseling. The ending of this part was dedicated the project Three-level model of care and the results of diagnostic screenings of reading analyzed in the works of P. Barešová (2009, 2010). The target of the practical part was the analysis of resulst of the second class pupils from new created Test of reading comprehension (Pokorná, Wolfová, Kucharská, in Kucharská, 2011). Three types of tasks (such as labeling borders words, fill in missing words in the text and making decision of the claims, whether they are true, in relation to the picture). The data collection was made in the project - Three-level model of care carried out by IPPP ČR (There was involved 345 pupils from 7 primary schools from three parts of Czech Republic - Prague, Central and South Bohemian Region and Moravia). The conducted analysis of...

Water stored in snow is a critical contribution to the world’s available freshwater supply and is fundamental to the sustenance of natural ecosystems, agriculture and human societies. The importance of snow for the natural environment and for many socio-economic sectors in several mid‐ to high‐latitude mountain regions around the world, leads scientists to continuously develop new approaches to monitor and study snow and its properties. The need to develop new monitoring methods arises from the limitations of in situ measurements, which are pointwise, only possible in accessible and safe locations and do not allow for a continuous monitoring of the evolution of the snowpack and its characteristics. These limitations have been overcome by the increasingly used methods of remote monitoring with space-borne sensors that allow monitoring the wide spatial and temporal variability of the snowpack. Snow models, based on modeling the physical processes that occur in the snowpack, are an alternative to remote sensing for studying snow characteristics. However, from literature it is evident that both remote sensing and snow models suffer from limitations as well as have significant strengths that it would be worth jointly exploiting to achieve improved snow products. Accordingly, the main objective of this thesis is the development of novel methods for the estimation of snow parameters by exploiting the different properties of remote sensing and snow model data. In particular, the following specific novel contributions are presented in this thesis: i. A novel data fusion technique for improving the snow cover mapping. The proposed method is based on the exploitation of the snow cover maps derived from the AMUNDSEN snow model and the MODIS product together with their quality layer in a decision level fusion approach by mean of a machine learning technique, namely the Support Vector Machine (SVM). ii. A new approach has been developed for improving the snow water equivalent (SWE) product obtained from AMUNDSEN model simulations. The proposed method exploits some auxiliary information from optical remote sensing and from topographic characteristics of the study area in a new approach that differs from the classical data assimilation approaches and is based on the estimation of AMUNDSEN error with respect to the ground data through a k-NN algorithm. The new product has been validated with ground measurement data and by a comparison with MODIS snow cover maps. In a second step, the contribution of information derived from X-band SAR imagery acquired by COSMO-SkyMed constellation has been evaluated, by exploiting simulations from a theoretical model to enlarge the dataset.

This diploma thesis is focused to the writing skills in an initiatory education of a literacy during the first grade at a primary school. The thesis is divided into the theoretical and the practical part. The theoretical part presents the genesis of the handwriting during the history, the physical and psychical expectations for the assumption of the writing skills, the methodics of two learning methods which are used in the czech education system most frequently and last but not least a list of the evaluated scales of handwriting. In the practical part we present the evaluation scale which were constructed for the purpose of this thesis. This scale monitors a plot of the written children's products, an error rate, an ability of corections and a graphical part. We kept at disposal about 500 written children's products which were collected from 22 classes from 9 schools from three parts of Czech Republic (Prague, Central and South Bohemian Region and Moravia). Children which were involved to the project, they were educated by the analytic-synthetic method or the genetic metod for the education of the literacy. The gained data was a part of the another project which were realized under the auspices of IPPP CR. The data was collected twice a one school year. Therefore we can observe a development of...

52 8 Summary The influence of defect size and surgical technique on the long-term morbidity of children with congenital diaphragmatic hernia Objective: The aim of this study is to evaluate the effects of diaphragm reconstruction using a synthetic non-absorbable patch from polytetrafluoroethylene (PTFE, Gore-Tex) and primary repair of diaphragm defects on the long-term morbidity in children after surgery of congenital diaphragmatic hernia (CDH), with a primary interest in the influence of these techniques on the occurrence of skeletal deformities and the development of pulmonary functions. One part of this study is to introduce a new objective method for perioperative evaluation of the size of diaphragmatic defects to enable comparison of results among various centres and methods used for diaphragmatic reconstruction. Another part of this study is to evaluate the validity of lung function assessment using four unique methods of Infant Pulmonary Function Tests (IPFT) in children under 13 kg of body weight. Material and Methods: A study of 69 patients operated on between 1996-2010 for CDH, in which the clinical part of the study was performed between the years 2009-2011. The clinical study evaluated anthropometric examination, pulmonary function testing and a questionnaire study which focused on long-term...