<p> <p>&nbsp / </p> </p> <p><font face="Times New Roman" size="3">The aim of this study was to compare the sealing ability of AH Plus sealer to the canal wall in the presence and absence of the smear layer.</font></p>

This study examines the rise of the Babi movement in its first phase (1844-47), the formative period which has been less fully explored than later phases (1847-52) but deserves a thorough critical examination. An attempt has been made to explain the complex relationship between the intellectual and social aspects of the movement; ideas, events and personalities are seen in a wide historical perspective, and the early impact of the movement on 'ulama, tujjār and other groups in Iranian urban society, and the reactions it evoked from them, are examined. The first two chapters deal with the intellectual and social climate of Iran in the late 18th and early 19th centuries, with particular attention to the development of millenarian ideas. Chapters III and IV are concerned with the process which eventually gave birth to the movement. The early life of Sayyid 'Alī Muhammad, the Bab, his family background and personal characteristics are discussed in some detail, so as to show the external influences and inner experiences which finally brought him to proclaim a new 'revelation' in 1844. The conflicts and confusions within the Shaykhi ranks, which served as a stimulus to the conversion of those Shaykhi students who formed the first Babi nucleus in Shiraz, are examined; so too the traditional Shi'i ideas and their similarities and differences with the new doctrine. Chapters Five to Seven study the earliest Babi attempts in the 'Atabāt and Iran to spread the new message to specific groups, and to a wider public in general, and the opposition first of the religious authorities and then of the secular power. Chapter Eight is a case-study of the growth of the early Babi community in Khurasan, within the context of socio-political change, the pattern of the local economy, and inter-communal links in the small rural and urban centres. Chapter Nine, finally, looks at the Bab's own efforts to declare his mission to a wider public; however circumstances forced him to reinterpret the mission in a symbolic way, and for the first time the enormous practical problems which faced the expansion of the movement were realised.

<p> <p>&nbsp / </p> </p> <p><font face="Times New Roman" size="3">The aim of this study was to compare the sealing ability of AH Plus sealer to the canal wall in the presence and absence of the smear layer.</font></p>

No description available.

>Magister Scientiae - MSc / The aim of this study was to compare the sealing ability of AH Plus sealer to the canal wall in the presence and absence of the smear layer.

Considerando-se a necessidade da obturação tridimensional e o adequado selamento marginal do sistema de canais radiculares, como fatores decisivos para o êxito da terapia endodôntica, este estudo objetivou avaliar as respostas inflamatórias periapicais resultantes da infiltração coronária em dentes de cães obturados com diferentes cimentos resinosos (AH Plus®, RealSeal® e RealSeal SE®) e técnicas obturadoras (condensação lateral e termoplástica). Para tanto, pré-molares e incisivos centrais e laterais de 5 cães tiveram o tratamento endodôntico realizado empregando-se limas de NiTi e creme de Endo PTC associado ao hipoclorito de sódio a 1%, estabelecendo-se como limite de instrumentação à distância de 1mm a 1.5mm aquém do vértice radiográfico. A seguir os condutos foram obturados de acordo com os grupos experimentais (n=12) e grupos controles (n=10): GI- AH Plus/condensação lateral, GII- AH Plus/termoplástificação, GIIIRealSeal/ condensação lateral, GIV- RealSeal/ termoplástificação, GV- RealSeal SE/condensação lateral, GVI- RealSeal SE/ termoplástificação, Grupo controle positivo e Grupo controle negativo. As cavidades coronárias ficaram expostas ao meio bucal por um período de 75 dias e, passado este período experimental, os cães foram eutanásiados por superdosagem de anestésico. Foi realizada a remoção cirúrgica das partes correspondentes aos pré-molares e incisivos da maxila e da mandíbula, fixação das mesmas em solução de formol a 10% por 72h e desmineralização em solução de ácido fórmico a 20% + citrato de sódio a 10% pelo período mínimo de 90 dias. Posteriormente, realizou-se a rotina histológica com cortes seriados com espessura de 6m e estes foram corados com hematoxilina e eosina (HE). Cada corte histológico foi digitalizado e analisado em relação à existência de patologia periapical por três avaliadores independentes. Os dados obtidos foram confrontados estatisticamente utilizando o teste de Kruskal-Wallis seguido do teste comparativo de Dunn, observando-se que em relação às técnicas, a termoplástificação por ondas contínuas de condensação associada à técnica de injeção mostrou melhores condições periapicais quando comparada à técnica de condensação lateral (p=0.0055), sendo que a utilização desta técnica resultou em reações inflamatórias mais intensas para o cimento RealSeal SE (p=0.002). Em relação aos cimentos avaliados, o RealSeal SE mostrou-se menos eficaz em evitar a percolação, produzindo maiores níveis de inflamação crônica independentemente do sistema de obturação (p=0.0088). / Considering the need for three-dimensional obturations and adequate marginal sealing of the radicular canal system as being decisive factors for successful endodontic therapy, this study had as its objective the evaluation of periapical inflammatory responses resulting from coronary infiltration in dog\'s teeth obturated using different resin sealers (AH Plus, RealSeal and RealSeal SE) and different obturation techniques (lateral condensation and thermoplastic). For this study, premolars, central and lateral incisors from five dogs had endodontic treatment employing NiTi files and Endo PTC cream associated with 1% sodium hypochlorite. The working length was established at a distance of 1.0 to 1.5mm short of the radiographic apex. After this, the teeth were obturated according to their experimental groups (n=12) and control groups (n=10). The groups were defined as follows: GI - AH Plus/lateral condensation, GII - AH Plus/thermoplastic, GIII - RealSeal/lateral condensation, GIV - RealSeal/thermoplastic, GV - RealSeal SE/lateral condensation, GVI - RealSeal SE/ thermoplastic, a positive control group and a negative control group. The coronal access were left exposed to the oral environment for a period of seventy-five days, and after this experimental period, the dogs were euthanized by anesthetic overdose. The parts corresponding to the premolars and the maxilar incisors were surgically removed. These were then submitted to a solution of 10% formol for 72 hours and then demineralized in a solution of 20% formic acid and 10% sodium citrate for a minimum period of ninety days. Before hand, a histological routine of serial cuts having a width of 6m was undertaken and these were colored with hematoxilin and eosin (HE). Each histological cut was digitalized and analyzed with respect to the existence of periapical inflammation by three independent evaluators. The data obtained was statistically compared, firstly using the Kruskal-Wallis test and then the comparative Dunn test, where it was noted that in relation to the techniques, thermoplastification by continuous wave of condensation associated with the injection technique showed better periapical conditions than what was seen for the lateral condensation technique (p=0.0055). On the other hand, for the sealers evaluated, the condensation technique resulted in more intense inflammatory reactions when the sealer RealSeal SE was used (p=0.002). In relation to the sealers evaluated, RealSeal SE was seen to be less effective against percolation, thus producing greater levels of chronic inflammation irrespective of the obturation system employed (p=0.0088).

Made available in DSpace on 2014-12-17T14:55:41Z (GMT). No. of bitstreams: 1 ViniciusSVS.pdf: 2441901 bytes, checksum: 1246fceb24d0749c8833cd005b384269 (MD5) Previous issue date: 2010-05-07 / The incorporate of industrial automation in the medical are requires mechanisms to safety and efficient establishment of communication between biomedical devices. One solution to this problem is the MP-HA (Multicycles Protocol to Hospital Automation) that down a segmented network by beds coordinated by an element called Service Provider. The goal of this work is to model this Service Provider and to do performance analysis of the activities executed by in establishment and maintenance of hospital networks / Com a incorpora??o de conceitos da automa??o industrial na ?rea m?dica, surge a necessidade de estabelecer mecanismos que permitam a comunica??o entre os dispositivos biom?dicos de maneira segura e eficiente. Dentre as solu??es para esse problema tem-se o PM-AH (Protocolo Multiciclos para Automa??o Hospitalar) que estabelece uma rede segmentada por leitos e coordenada por um elemento chamado Provedor de Servi?os. O objetivo desse trabalho ? modelar esse Provedor de Servi?os e efetuar an?lises de desempenho sobre as tarefas realizadas pelo mesmo no estabelecimento e manuten??o da rede hospitalar

Considerando-se a necessidade da obturação tridimensional e o adequado selamento marginal do sistema de canais radiculares, como fatores decisivos para o êxito da terapia endodôntica, este estudo objetivou avaliar as respostas inflamatórias periapicais resultantes da infiltração coronária em dentes de cães obturados com diferentes cimentos resinosos (AH Plus®, RealSeal® e RealSeal SE®) e técnicas obturadoras (condensação lateral e termoplástica). Para tanto, pré-molares e incisivos centrais e laterais de 5 cães tiveram o tratamento endodôntico realizado empregando-se limas de NiTi e creme de Endo PTC associado ao hipoclorito de sódio a 1%, estabelecendo-se como limite de instrumentação à distância de 1mm a 1.5mm aquém do vértice radiográfico. A seguir os condutos foram obturados de acordo com os grupos experimentais (n=12) e grupos controles (n=10): GI- AH Plus/condensação lateral, GII- AH Plus/termoplástificação, GIIIRealSeal/ condensação lateral, GIV- RealSeal/ termoplástificação, GV- RealSeal SE/condensação lateral, GVI- RealSeal SE/ termoplástificação, Grupo controle positivo e Grupo controle negativo. As cavidades coronárias ficaram expostas ao meio bucal por um período de 75 dias e, passado este período experimental, os cães foram eutanásiados por superdosagem de anestésico. Foi realizada a remoção cirúrgica das partes correspondentes aos pré-molares e incisivos da maxila e da mandíbula, fixação das mesmas em solução de formol a 10% por 72h e desmineralização em solução de ácido fórmico a 20% + citrato de sódio a 10% pelo período mínimo de 90 dias. Posteriormente, realizou-se a rotina histológica com cortes seriados com espessura de 6m e estes foram corados com hematoxilina e eosina (HE). Cada corte histológico foi digitalizado e analisado em relação à existência de patologia periapical por três avaliadores independentes. Os dados obtidos foram confrontados estatisticamente utilizando o teste de Kruskal-Wallis seguido do teste comparativo de Dunn, observando-se que em relação às técnicas, a termoplástificação por ondas contínuas de condensação associada à técnica de injeção mostrou melhores condições periapicais quando comparada à técnica de condensação lateral (p=0.0055), sendo que a utilização desta técnica resultou em reações inflamatórias mais intensas para o cimento RealSeal SE (p=0.002). Em relação aos cimentos avaliados, o RealSeal SE mostrou-se menos eficaz em evitar a percolação, produzindo maiores níveis de inflamação crônica independentemente do sistema de obturação (p=0.0088). / Considering the need for three-dimensional obturations and adequate marginal sealing of the radicular canal system as being decisive factors for successful endodontic therapy, this study had as its objective the evaluation of periapical inflammatory responses resulting from coronary infiltration in dog\'s teeth obturated using different resin sealers (AH Plus, RealSeal and RealSeal SE) and different obturation techniques (lateral condensation and thermoplastic). For this study, premolars, central and lateral incisors from five dogs had endodontic treatment employing NiTi files and Endo PTC cream associated with 1% sodium hypochlorite. The working length was established at a distance of 1.0 to 1.5mm short of the radiographic apex. After this, the teeth were obturated according to their experimental groups (n=12) and control groups (n=10). The groups were defined as follows: GI - AH Plus/lateral condensation, GII - AH Plus/thermoplastic, GIII - RealSeal/lateral condensation, GIV - RealSeal/thermoplastic, GV - RealSeal SE/lateral condensation, GVI - RealSeal SE/ thermoplastic, a positive control group and a negative control group. The coronal access were left exposed to the oral environment for a period of seventy-five days, and after this experimental period, the dogs were euthanized by anesthetic overdose. The parts corresponding to the premolars and the maxilar incisors were surgically removed. These were then submitted to a solution of 10% formol for 72 hours and then demineralized in a solution of 20% formic acid and 10% sodium citrate for a minimum period of ninety days. Before hand, a histological routine of serial cuts having a width of 6m was undertaken and these were colored with hematoxilin and eosin (HE). Each histological cut was digitalized and analyzed with respect to the existence of periapical inflammation by three independent evaluators. The data obtained was statistically compared, firstly using the Kruskal-Wallis test and then the comparative Dunn test, where it was noted that in relation to the techniques, thermoplastification by continuous wave of condensation associated with the injection technique showed better periapical conditions than what was seen for the lateral condensation technique (p=0.0055). On the other hand, for the sealers evaluated, the condensation technique resulted in more intense inflammatory reactions when the sealer RealSeal SE was used (p=0.002). In relation to the sealers evaluated, RealSeal SE was seen to be less effective against percolation, thus producing greater levels of chronic inflammation irrespective of the obturation system employed (p=0.0088).

Fatigue-crack growth data for the lower arm of the Apache helicopter’s scissor assembly is presented from an Army alternate source qualification test. The lower arm model is imported to finite element analysis software to obtain the stress state at a crack location. The stress state and geometry are used in seven fatigue-crack growth cases in NASGRO and AFGROW, with an additional four cases discussed briefly. The results from the fatigue-crack growth routines are compared to the fatigue-crack growth data from the Army’s test. One case reproduces the crack growth data prior to breakthrough. Some cases are shown to be more applicable to this configuration than others are. The process of performing fatigue life estimates is discussed. Suggestions are made on the viability of this approach and possible future avenues for development.

Plastics are highly useful economically because of their resistance to diverse types of environmental and chemical agents and their ability to be molded into many types of products. Globally, plastic production is greater than 20 million metric tons per year. However, their widespread use and often their disposable nature results in significant plastic accumulation in the environment. Plastics are made of hydrocarbons, materials that are biodegradable depending on their molecular structure and size. It is hypothesized that pre-treatment of plastic materials could enhance their bioavailability, facilitating their microbial biodegradation. In this dissertation, a process was developed to treat nylon 6,6 polymers by acid hydrolysis to produce a microbial growth medium. The chemical composition of the medium was determined by low pressure liquid chromatography-spectrophotometry and electrospray ionization mass spectrometry and found that the medium was a mixture of molecules with molecular weight > 800 m/z and with similar chemical characteristics to polyamines. There was steady growth of Pseudomonas putida KT2440 in the medium with concomitant substrate biodegradation. Notably, the yeast Yarowia lipolytica grew well in the medium when supplemented with yeast extract. A similar medium derived from nylon 6,6 containing nylon-derived particles supported the growth of Beijerinckia sp. and Streptomyces sp. BAS1. Confocal laser scanning microscopy and flame ionization gas chromatography were used to identify and quantify the production of polyhydroxybutyrate, a type of “bioplastic”. The aforementioned microorganisms were cultivated in a bench-scale bioreactor that was developed as part of this dissertation. The bioreactor had a novel impeller design resulting in enhanced mixing and rotation and also a modular format allowing for diverse configurations. The bioreactor was notable for its durability and low cost. A detailed description of its design is included in the appendices. In summary, plastic materials can potentially be processed into growth media for microorganisms and can be used for production of value-added products. The media described herein can be used in bioconversion processes using a bioreactor.