Territorialisation and power in Portuguese America. The creation of comarcas (16th-18th centuries)

The general aim of this article is to analyse the political organisation of the territory in Portuguese America from the start of the building up of the Crown judiciary system from in the 16th to the 18th centuries and to look into the causes of its belatedness in comparison to what happened in Spanish America. The focus will however be on the comarcas through the reconstitution of the process leading to the setting up of these judiciary divisions. Four stages of this process will be identified and discussion will ensue over the social and political contexts in which these political and administrative novelties came to happen. It is claimed that the delay in the structuring of the judicial network in the States of Brazil and Maranhão stems from the fact that the Portuguese advance into the territories took place at a later stage. The comparisons between the two systems will also bring other differences to the fore, not least the greater rigidity of the Spanish model in contrast to the more experimental character of the Portuguese one, and the resilience found to exist in the donatarial system. It is also worth to point out that given solutions were the result of the will of central power as much as of local initiative, and it is suggested that the building up of the crown’s political apparatus (in which the judiciary network is included) brought about the connivance,albeit ephemeral, of social interests which are considered contradictory or irreconcilable by some authors.

Estudo de sistemas vítreos para infiltração em alumina

The system in-Ceram Alumina, produced by VITA, consists in a technique of prepare of a substructure of ceramics to dental crowns. First burning is made in the alumina decanted by slip casting process under a stone die that reproduces the tooth prepared to receive a crown. In a second burning, alumina is infiltrated by vitreous system, giving to this set a high mechanic resistance. In this work, it s made a study of the composition of a new infiltrating material more used nowadays, giving to alumina desirable mechanics proprieties to its using like substructure of support to ceramic s crown used in the market today. The addition of Lanthanum oxide (frit A) and calcium oxide (frit B) was made in attempt to increase the viscosity of LZSA and to reduce fusion temperature. The frits were put over samples of alumina and took to the tubular oven to 1400ºC under vacuum for two groups (groups 1 and 2). For another two groups (groups 3 and 4) it was made a second infiltration, following the same parameters of the first. A fifth group was utilized like group of control where the samples of pure alumina were not submitted to any infiltrating process. Glasses manifested efficient both in quality and results of analysis of mechanic resistance, being perfectly compatible with oral environment in this technical requisite. The groups that made a second infiltration had he best results of fracture toughness, qualify the use in the oral cavity in this technical question. The average of results achieved for mechanic resistance to groups 1, 2, 3, 4 and 5 were respectively 98 MPa, 90 MPa, 144 MPa, 236 MPa and 23 MPa

Arthropods associated with the crown of Mauritia flexuosa (Arecaceae) palm trees in three different environments from Brazilian Cerrado

Artrópodos associados à copa de árvores, principalmente palmeiras, são pouco conhecidos no Cerrado. Para descrever a estrutura da comunidade de artrópodos à copa de Mauritia flexuosa (Arecaceae) foram amostradas 150 palmeiras em seis veredas” do Distrito Federal, de áreas silvestres, rurais e periurbanas na estação chuvosa. Os artrópodos presentes nos ninhos abandonados de aves, refúgios de mamíferos, folhas e matéria orgânica foram coletados manualmente, fixados em etanol 70% e separados em ordem, família, morfoespécie e guildas alimentares. As características das palmeiras medidas foram altura da estipe, diâmetro da copa, número de folhas e de ninhos de aves nas palmeiras. Foram coletados 3.862 indivíduos, pertencentes a 15 ordens, 45 famílias e 135 morfoespécies. As ordens mais abundantes foram Coleoptera (28,6%), Blattodea (21,8%), Collembola (11,4%) e Hemiptera (10,2%). As famílias Blaberidae, Tenebrionidae, Entomobryidae, Reduviidae, Oniscidae, Staphylinidae, Carabidae e Formicidae representaram 82,1% de todos os indivíduos coletados. A maioria das morfoespécies foi pouco abundante, 71 (52,6%) apresentaram uma abundância média igual ou menor que 1 indivíduo/palmeira. Coleoptera compreendeu o maior número de morfoespécies (43,7%) seguida de Araneae (20,0%). A análise das guildas alimentares mostrou prevalência de predadores e hematófagos (36,0%). A riqueza e a abundância de artrópodos foram menores no ambiente periurbano. O número de ninhos de aves apresentou correlação positiva com abundância e riqueza, o que não ocorreu com as medidas das palmeiras. A importância de M. flexuosa para a manutenção da artropodofauna nas “veredas” no bioma Cerrado é discutida. _______________________________________________________________________________________ ABSTRACT

Estruturas cerâmicas a base de zircônia e alumina utilizadas na confecção de infra - estruturas para coroas e pontes fixas

The continuous advances in ceramic systems for crowns and bridges infrastructure getting researchers and manufacturers looking for a material that has good mechanical properties and aesthetic. The purpose of this study was to verify in which composition and sintering temperature the ceramic system for infrastructure composed of alumina and zirconia would have the best mechanical properties. With this objective we made in UFRN laboratories 45 test bodies in the form of rectangular bars with the following dimensions: 30mm x 8mm x 3mm, where we separated by the sintering temperature: 1200°C, 1300ºC and 1400ºC, and by comp osition: 33% Zirconia + 67% Alumina; 50% Zirconia + 50% Alumina and 25% Zirconia + 75% Alumina, these test bodies were not infiltrated with glass. Also, were made nine test bodies by a technical from a laboratory with a commercial ceramic system: in the Ceram Zircônia (Vita - Zahnfabrik) with the following dimensions: 20mm x 10mm x 0.5mm, these test bodies following all recommendations of the manufacturer and were infiltrated with glass. Were realized optical and electronic microscopy analyses, hardness testing, resistance to bending in three points, porosity and bulk density. After analysis of the results we verified that with the increasing of sintering temperature, increased the value of resistance to bending, but with the same temperature there was no significant difference between the different compositions, samples made with the commercial ceramic that were infiltrated, presented a resistance to bending six times greater than the samples sintered to 1400°C and which have not been infiltra ted. There was no significant difference between the values of apparent porosity for the samples made in UFRN laboratories, but the samples of commercial ceramic obtained 0% in porosity apparent value. In tests of Rockwell Hardness there is an increase in the value of Hardness, with the increase of sintering temperature for the samples not infiltrated. Samples infiltrated showed similar values as the samples sintered in 1400°C. There was no significant difference between the values of apparent density among samples manufactured in UFRN laboratories and samples made with a commercial ceramic

A Capitania-mor do Mar da Índia : 1502-1564

A presente dissertação pretende compreender as origens e a actividade associada à capitania-mor do mar da Índia, considerado o segundo cargo mais relevante da estrutura político-militar do Estado Português da Índia, desde 1502 a 1564. Este cargo, transferido do reino para a Índia, ainda nos primórdios da presença portuguesa, em 1502, visou assegurar os interesses da Coroa na Ásia. Após a nomeação do primeiro vice-rei para a Índia, D. Francisco de Almeida, em 1505, este ofício foi desde logo disputado e requerido pelos governadores subsequentes. Na maioria das vezes era-lhes concedida a possibilidade de indicarem ao soberano quem pretendiam ao seu lado, para os auxiliar na realização do plano de expansão gizado pela Coroa. No entanto, ao monarca assistia a palavra final. Procuramos saber quem foram os oficiais que ocuparam a capitania e compreender que espaço era esse “Mar da Índia”. Considerado o controlo do mar como a base da afirmação e alargamento da presença portuguesa na Ásia, de acordo com os planos de expansão de D. Manuel I e D. João III, é relevante percebermos qual foi a área de autoridade desta capitania. Se o espaço é relevante, também as embarcações o são, por isso, tentamos perceber que tipos de embarcações faziam parte das armadas associadas a este ofício. Após o entendimento sobre o espaço e as embarcações, foi relevante percebermos os critérios da nomeação e as funções inerentes, as quais eram, sobretudo, do foro político-militar. Todavia, os poderes outorgados à capitania, de natureza marítima, foram por vezes alargados às praças portuguesas do Estado da Índia. Percepcionar de que forma e para que fins essa autoridade se ampliou também foi motivo de discussão. Compreender o estatuto social e o impacto do cargo nas trajectórias individuais, foram aspectos que foram tidos em linha de conta ao longo do nosso estudo. Tentamos igualmente avançar com hipóteses explicativas sobre o fim deste cargo. Com este estudo pretendemos compreender como a capitania-mor do mar da Índia fez parte do funcionamento da cúpula político-militar do Estado Português da Índia, ao longo de mais de meio século, como elemento estabilizador. Constatamos que o capitão-mor do mar também foi usado pelo rei, com o intuito de controlar o governador em funções.

Effect of bleaching agents containing fluoride or calcium on enamel microhardness, roughness and permeability

Aim: To evaluate the effect of different in-office bleaching agents on the permeability, roughness and surface microhardness of human enamel. Methods: For evaluation of roughness and microhardness, 40 hemi-faces of 20 premolars were subjected to initial roughness (Ra parameter) and microhardness (VHN) measurements. Thirty-two premolar’s crowns were used for permeability test. Then, all specimens were randomly divided into four groups: C - without bleaching (control), HP35 - bleaching with 35% hydrogen peroxide (HP), HPF38 - 38% HP+fluoride, HPC35 - 35% HP+calcium. Final roughness (FR) and microhardness (FM) measurements were evaluated. For permeability, the 32 crowns were immersed in 1% sodium hypochlorite (20 min) and silver nitrate solutions (2 h) and subjected to developing solution under fluorescent light (16 h). Three sections from the crowns were analyzed in light microscope (100x) to evaluate the scores of permeability: Score 0 - no tracer agent penetration; Score 1 - less than half the thickness of enamel penetration; Score 2 - tracer agent reaching half the enamel thickness; Score 3 - entire enamel depth penetration, without reaching dentin and Score 4 - tracer agent reaching dentin. For roughness and microhardness evaluation were used one-way ANOVA and Dunnet post-test for independent samples, and t test for paired samples. For permeability, the data were analyzed by Kruskal Wallis and Dunn tests. Results: A significantly higher permeability and surface roughness were observed in groups HP35, HPF38 and HPC35 compared to the C group, as well as decreased microhardness (p<0.05). Conclusions: All bleaching agents increased permeability and surface roughness, and decreased microhardness of human enamel; thus, the addition of fluoride or calcium was not beneficial.

Efeito das variáveis laboratoriais protéticas na adesão da porcelana com ligas de níquel-cromo

The metalceramic crowns are usually used in dentistry because they provide a resistant structure due to its metallic base and its aesthetics from the porcelain that recovers this structure. To manufacture these crowns, a series of stages should be accomplished in the prosthetic laboratories, and many variables can influence its success. Changes in these variables cause alterations in the metallic alloy and in the porcelain, so, as consequence, in the adhesion between them. The composition of the metal alloy can be modified by recasting alloys, a common practice in some prosthetic laboratories. The aim of this paper is to make a systematic study investigating metalceramic crowns as well as analyzing the effect of recasting Ni-Cr alloys. Another variable which can influence the mechanism of metalceramic union is the temperature used in firing porcelain procedure. Each porcelain has to be fired in a fixed temperature which is determined by the manufacturer and its change can cause serious damages. This research simulate situations that may occur on laboratory procedures and observe their consequences in the quality of the metalceramic union. A scanning eletron microscopy and an optic microscopy were accomplish to analyse the metal-ceramic interface. No differences have been found when remelting alloys were used. The microhardness were similar in Ni-Cr alloys casted once, twice and three times. A wettability test was accomplished using a software developed at the Laboratório de Processamento de Materiais por Plasma, on the Universidade Federal do Rio Grande do Norte. No differences were found in the contact angle between the solid surface (metallic substratum) and the tangencial plane to the liquid surface (opaque). To analyse if the temperature of porcelain firing procedure could influence the contact area between metal and porcelain, a variation in its final temperature was achieve from 980° to 955°C. Once more, no differences have been found

A conquista de Arzila pelos Portugueses : 1471

Em 1471 D. Afonso V (1432-1481), rei de Portugal, decidiu voltar ao Norte de África para dar continuidade à política de expansão africana da Coroa. O alvo escolhido foi Arzila e, em Agosto de 1471, a vila foi conquistada por uma hoste portuguesa que contou com 23.000 homens de combate. Pouco estudada pela historiografia, a conquista de Arzila é meritória de um lugar de destaque fruto da sua singularidade. Foi uma campanha meticulosamente planeada que incluiu a compra de toneladas de mantimentos e armas e o recrutamento da maior hoste até então levantada em Portugal. As consequências da queda de Arzila perduraram no tempo: Tânger foi abandonada dias depois e o tratado de tréguas assinado com o sultanato de Fez consolidou presença portuguesa na região, tendo esta permanecido imperturbável até ao início do século XVI, e permitiu a D. Afonso V abandonar de vez os campos de batalha norte-africanos e dar azo às suas ambições castelhanas. O presente estudo insere-se numa lacuna historiográfica face à pouca atenção que a conquista de Arzila granjeou, até ao momento, por parte dos historiadores portugueses. Assim sendo, é estudada não apenas a conquista de Arzila, enquanto acontecimento limitado ao mês de Agosto de 1471, mas também todos os preparativos que foram levados a cabo para permitirem o sucesso da campanha, bem como as consequências da queda de Arzila, mais prolongadas no tempo. Esse estudo é escorado não só nos relatos cronísticos mas também noutras fontes de tipo narrativo e na documentação de chancelaria. É através do cruzamento das várias fontes que é possível detectar e corrigir determinadas lacunas dos cronistas e dos historiadores que os seguiram.

Odontometric analysis of molars for sex determination

Aim: To investigate the existence of sexual dimorphism between the first and second permanent molars. Methods: A cross-sectional, observational, blind study using comparative and statistical descriptive procedures. The sample included 50 pairs of plaster casts from undergraduate dental students (25 men/25 women) from the Federal University of Paraíba, João Pessoa/PB, Brazil, aged 20-26 years. Odontometric measurements of first and second maxillary/mandibular, right/left permanent molars were performed. Mesiodistal (MD) and buccolingual/palatal (BL/BP) widths and the distance between the lingual cusps of corresponding molars in opposite quadrants, were measured. The data were analyzed by Student’s t test and ANOVA with Bonferroni (p≤0.05). Results: The crowns of all first molars were statistically larger in men than in women (p<0.05). Maxillary and mandibular left second molars (#27 and #37) did not differ in their MD widths (p=0.66, p=0.75), whereas mandibular left and right second molars (#37 and #47) showed statistically different BL widths (p=0.007 and p=0.008). As to the distance between the lingual cusps, only the first left-to-right mandibular molars (#36-46) showed no sex dimorphism (p=0.107). Conclusions: Molars are larger in males than in females. Individually, first molars demonstrated higher evidence of sex distinction than second molars.

Antimicrobial and bond strength properties of a dental adhesive containing zinc oxide nanoparticles

Aim: To assess the effect of adding zinc oxide nanoparticles to dental adhesives on their anti-microbial and bond strength properties. Methods: 45 human premolars were cut at the cement enamel junction (CEJ) and the crowns were sliced into buccal and lingual halves. The specimens were classified into three groups, etched with 37% phosphoric acid for 15 s and rinsed for 30 s. Single Bond, Single Bond+5% zinc oxide and Single Bond+10% zinc oxide were used in the first, second and third groups. A cylinder of Z250 composite was bonded and cured for 40 s. For anti-bacterial testing, 10 samples of each group were assessed by direct contact test; 10 μL of bacterial suspension was transferred into tubes containing adhesives and incubated for one hour; 300 μL of brain heart infusion (BHI) broth was added to each tube and after 12 h, 50 μL of bacteria and broth were spread on blood agar plates and incubated for 24 h. Results: The colony count decreased significantly in the second and third groups compared to the first. Conclusions: Incorporation of zinc oxide nanoparticles into dental adhesives increases their anti-microbial properties without affecting their bond strength.

Avaliação in vitro da adaptação marginal e interna de coroas de cerâmica e resina composta fabricadas com o sistema CAD/CAM utilizando duas câmeras intraorais de moldagem digital

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, Programa de Pós-Graduação em Ciências da Saúde, 2015.

Application of dental morphological characteristics for medical-legal identification: sexual diagnosis in a portuguese population

Licenced under a Creative Commons Attribution 3.0.

Estudo da viabilidade do processo de reciclagem do material descartado do sistema Zirkonzanh® de produção de próteses dentárias

At present, the material of choice for performing aesthetic dental prosthetic work is in the ceramic. Among them, the ceramic base of stabilized zirconia with 3% yttria (3Y - TZP) stand out for having excellent physical and mechanical properties. During the machining of blocks of zirconia in the laboratory to prepare the various types of prostheses, much of the material is given off in the form of powder, which is subsequently discarded. The waste of this material results in financial loss, reflecting higher final cost treatment for patients, as well as damage to the environment, thanks to the processes involved in the manufacture and disposal of the ceramic. This research, pioneered the recycling of zirconium oxide powder obtained during milling of dental crowns and bridges, we highlight the social and environmental aspects and aims to establish a protocol for the reuse of waste (powder of zirconia Zirkonzahn® system) discarded to obtain a new block of compacted zirconia to maintain the same mechanical and microstructural properties of commercial high-cost imported material. To compare with the commercial material, samples were uniaxially (20 MPa) and isostatically (100 MPa), and its mechanical and microstructural characterization was performed through tests of density, porosity, dilatometry, X-ray diffraction (XRD), hardness, fracture toughness, resistance to fracture electron microscopy (SEM) and analysis of grain size. The results observed in the samples were isostatically pressed similiares those obtained with samples from the commercial material demonstrating the viability of the process

Abnormal primary and permanent dentitions with ectodermal symptoms predict WNT10A deficiency

BACKGROUND: The WNT10A protein is critical for the development of ectodermal appendages. Variants in the WNT10A gene may be associated with a spectrum of ectodermal abnormalities including extensive tooth agenesis. METHODS: In seven patients with severe tooth agenesis we identified anomalies in primary dentition and additional ectodermal symptoms, and assessed WNT10A mutations by genetic analysis. RESULTS: Investigation of primary dentition revealed peg-shaped crowns of primary mandibular incisors and three individuals had agenesis of at least two primary teeth. The permanent dentition was severely affected in all individuals with a mean of 21 missing teeth. Primary teeth were most often present in positions were succedaneous teeth were missing. Furthermore, most existing molars had taurodontism. Light, brittle or coarse hair was reported in all seven individuals, hyperhidrosis of palms and soles in six individuals and nail anomalies in two individuals. The anomalies in primary dentition preceded most of the additional ectodermal symptoms. Genetic analysis revealed that all seven individuals were homozygous or compound heterozygous for WNT10A mutations resulting in C107X, E222X and F228I. CONCLUSIONS: We conclude that tooth agenesis and/or peg-shaped crowns of primary mandibular incisors, severe oligodontia of permanent dentition as well as ectodermal symptoms of varying severity may be predictors of bi-allelic WNT10A mutations of importance for diagnosis, counselling and follow-up.

Comunicação e prática política nas monarquias ibéricas de antigo regime (1700-1750): Évora, Córdova, Ouro Preto e Quito

O presente estudo trata da prática política nos diferentes espaços das monarquias ibéricas na primeira metade do século XVIII. Tendo como objecto de análise principal a correspondência de quatro municípios seleccionados como observatórios (Évora, Córdova, Ouro Preto e Quito), pretende-se conhecer com maior detalhe as variações desta mesma prática em função dos contextos. Partindo da ideia de que o modelo político-administrativo implementado na América seria, na essência, decalcado do peninsular, procura-se aqui entender as mutações resultantes desta transferência. Ao longo deste trabalho defender-se-á a ideia de que, apesar das semelhanças entre o aparelho burocrático metropolitano e americano, a prática política nos territórios extra-europeus revestia-se de um conjunto de especificidades que a diferenciavam de forma clara. Neste sentido, argumenta-se que estas mutações condicionavam igualmente quais seriam os interlocutores das coroas nas diferentes regiões. Ou seja, que uma mesma instância teria, nos territórios ultramarinos e peninsulares, graus de participação nos processos de negociação e articulação política consideravelmente diferentes, algo que de que os municípios são um bom exemplo. Para o efeito serão comparados aspectos como os ritmos da comunicação; o relevo de cada instância na comunicação com a coroa; o perfil dos indivíduos que, nos diferentes territórios, ocupavam os ofícios da malha administrativa; as dinâmicas de especialização de competências ou de concentração de funções num mesmo cargo; a conflitualidade institucional e a existência de iniciativas políticas de cariz supramunicipal; Abstract: This study deals with the political practice in different areas of the Iberian monarchies in the first half of the eighteenth century. The main object of study is the correspondence of four selected municipalities (Évora, Cordoba, Ouro Preto and Quito), and it aims to know in greater detail the variations of this same practice on different contexts. Starting from the idea that the political and administrative model implemented in America would, in essence, be modeled on the peninsular, the intent is to understand the changes resulting from this transfer. Throughout this work we will argue that, despite the similarities between the metropolitan and American bureaucracy, political practice in non-European territories possessed a set of characteristics that were very specific. In this sense, it is argued that these mutations would also determine which would be the interlocutors of the crowns in different regions. That is, if the same instance would, in the overseas and peninsular territories, have different levels of participation in the negotiation and in the political articulation processes, something that municipalities are a good example of. For this purpose, aspects such as the rhythms of communication; the importance of each instance in the correspondence with the crown; the profile of the individuals who, in different territories, occupied the offices of the administrative network; the dynamics of specialization or concentration of functions in the same position; the institutional conflicts and the existence of supramunicipal initiatives will be compared.