Precipitation of rutile and anatase (Tio12) fine powders and their conversion to MTiO3 (M = Ba, Sr, Ca) by the hydrothermal method

Fine powders of TiO2 (rutile) with high degree of crystallinity are formed from aqueous titanium oxychloride solution under hydrothermal conditions at 160–230°C and 15–100 kg/cm2 for 1–2 hours. The anatase phase is produced from the same medium when sulfate ion impurity is present, with Image . Both these fine powders are converted to BaTiO3, SrTiO3 or CaTiO3 when suspended in Ba(OH)2 or Sr(OH)2 solution or in an aqueous slurry of carbonate-free CaO with Image , at 180–280°C and 12–65 kg/cm2 for 4–8 hours. The resulting fine powders contain monocrystallites of the perovskite phase with 0.1–1.5 μm particle size.

Impedance parameters and the state-of-charge. II. Lead-acid battery

The determination of the state-of-charge of the lead-acid battery has been examined from the viewpoint of internal impedance. It is shown that the impedance is controlled by charge transfer and to a smaller extent by diffusion processes in the frequency range 15–100 Hz. The equivalent series/parallel capacitance as well as the a.c. phase-shift show a parabolic dependence upon the state-of-charge, with a maximum or minimum at 50% charge. These results are explained on the basis of a uniform transmission-line analog equivalent circuit for the battery electrodes.

Botere Judizialaren Lege Organikoa

Gaur egun, Botere Judizialaren Lege Organikoaren Erreformatik abiatuta -abenduaren 23ko 19/2003 LOren bidez gauzatua-, hainbat erregelamendu eta araudi sortu dira hizkuntza-normalizaziorako prozesu garrantzitsu bat abiarazteko Justizia Administrazioan. Beraz, aipatzekoa da orain arte eginiko ahalegina ez dela nolanahikoa izan, emaitzak desberdinak izan badira ere hainbat gorabehera medio, eta bereziki nabarmentzekoa da Justizia Administrazioaren zerbitzura diharduten pertsonen konpromisoa euskalduntze-prozesuan eta hizkuntzaren erabilera bultzatzeko ekimenetan. Botere Judizialaren Lege Organikoak irismen juridiko handia du zuzenbide publikoaren esparruen multzoan. Hori horrela, eragina du Konstituzio Zuzenbidean -Estatuaren funtsezko Botere bati eta Botere Judizialaren Kontseilu Nagusia bezalako organo konstituzional bati eragiten dien aldetik-, Zuzenbide Prozesalean -Epaitegien eta Auzitegien antolakuntza eta funtzionamendua erregulatzen duen aldetik- eta baita Administrazio Zuzenbidean ere -erlazio juridiko administratiboak eta administrazio-izaerako prozedurak barne hartzen dituen neurrian, adibidez, Epaileen eta Magistratuen estatutu-araubideari dagozkionak-. Beste ikuspegi batetik, Botere Judizialaren Lege Organikoa erreferentzia da epaileriaren estatutu juridikoan, «Zuzenbide Judiziala» izenez ere ezaguna, hiru eratako funtsezko alderdiak barne hartzen dituena: alderdi subjektiboak -Botere Judizialaren organoak eta Epaileen eta Magistratuen estatutu-araubidea, baita Idazkari Judizialen eta Justizia Administrazioaren zerbitzura diharduten gainerako funtzionario Kidegoen estatutu-araubidea ere-; alderdi objektiboak -Botere Judizialaren gobernua, Jurisdikzioaren hedadura eta mugak, eta Epaileen eta Magistratuen independentzia-; eta azkenik, alderdi formalak -Organo jurisdikzionalen araubide prozesala, ekinbide judizialen iraupena eta forma, eta hainbat gairi dagozkien prozedurak: hautaketa, lanpostuak betetzea, egoera administratiboak, ikuskaritza eta Karrera Judizialeko kideen diziplinaaraubidea eta ikuskapena-. Botere Judizialaren Lege Organikoaren —dokumentu berez luzea -eta haren ondoz ondoko erreformen itzulpenarekin, UPV/EHUko zuzenbideko irakasle-talde baten lan serio eta zorrotza bururatzen da. Lan horretan, itzulpenean espezializatutako hizkuntzalarien laguntza izan dute, itzulpen fidel eta teknikoena egiteko, termino egokienak hautatu eta erabilita.

Survival rates of rays discarded by the bottom trawl squid fishery off the Falkland Islands

Waters off the Falkland Islands are subject to a specialized multispecies ray fishery and were first fished by a Korean fleet in 1989. More than twenty different rajid species have been recorded from catches around the islands, and five species accounted for 87.04% of the total catch during 1993−2002. Catches peaked in 1993 at 8523 metric tons, and specific fishing licenses — R (second season) and F (first season) — were first introduced in 1994 and in 1995, respectively (Agnew et al. 2000; Falkland Islands Government, 2002; Wakeford et al., in press).

Lecciones de sistema métrico decimal

UANL

L'experiència del Taller de Robòtica LEGO Bogatell-Icària. 'La experiencia del Taller de Robótica LEGO Bogatell-Icària'.

Resumen basado en el de la publicación

O pão e a festa: patrimônio imaterial e turismo em Juiz de Fora

Esta pesquisa tem por objetivo analisar os pedidos de registro do Pão Alemão e da Deutsches Fest como bens culturais de natureza imaterial de Juiz de Fora, sendo elementos representantes da cultura e da tradição dos imigrantes alemães que fazem parte da história da cidade. A Festa Alemã ou Deutsches Fest é, atualmente, um dos maiores eventos do calendário cultural e turístico de Juiz de Fora, cidade localizada na Zona da Mata do Estado de Minas Gerais. Realizada no bairro Borboleta, antiga Colônia Alemã, a festa foi criada em 1969, por descendentes dos alemães que imigraram para o município, em meados do século XIX. O Pão Alemão, encontrado nas festas e casas do bairro, além de ser o principal elo de preservação da memória construída por esses descendentes alemães, tornou-se importante elemento simbólico, enquanto modo de preparo da legítima culinária alemã. Pão e Festa fazem parte de uma tradição constituída, ao longo de anos, para afirmar a identidade do grupo, proporcionando-lhe ampliar sua participação nos âmbitos políticos e econômicos locais.

Um Estudo de Politicas e Práticas do uso do GNV no transporte público urbano do Brasil

The use of Natural Gas Vehicle has had a fast increase lately. However, in order to have a continuous success this Program needs to develop converting devices of Otto-cycle engines, gasoline or alcohol, to the use of NGV (Natural Gas Vehicle) that presents low cost, maintaining the same original development of the vehicle and low level of emissions, considering the PROCONVE rules. Due to the need to diversify the matrix in order to avoid energetic dependence and due to strict pollution control, it has increased in the Brazilian market the number of vehicles converted to the use of NGV. The recent regulation of the PROCONVE, determining that the converted engines with kits should be submitted to emission testing, comes to reinforce the necessity of the proposed development. Therefore, if we can obtain kits with the characteristics already described, we can reach a major trust in the market and obtain an increase acceptance of the vehicle conversion for NGV. The use of natural gas as vehicle fuel presents several advantages in relation to liquid fuels. It is a vehicle fuel with fewer indexes of emissions when compared to diesel; their combustion gases are less harmful, with a major level of safety than liquid fuels and the market price is quite competitive. The preoccupation that emerges, and the motivation of this project, is to know which are the main justifications for such technology, well accepted in other countries, with a low index or emission, with a high level of safety, where its maintenance becomes low, reminding that for this it is necessary that this technology has to be used properly, and once available in the market will not motivate interest in the urban transportation companies in Brazil, in research centers in general. Therefore this project exists to show the society in a general way the current vision of the main governmental factors, of the national research centers and of the private companies concerning the use of natural gas vehicles in urban transport vehicles, in order to give a major reliability to the population as well as to motivate national market competitiveness with a low cost and reliable product and to enrich the national technology

Análise crítica do processo de auditoria de sistema de gestão da qualidade no setor aeroespacial

A auditoria de sistema de gestão da qualidade é utilizada pelas organizações para melhorar o seu desempenho por meio de avaliações sistemáticas dos processos. Ao mesmo tempo, a atividade de auditoria vem sendo questionada quanto à sua capacidade de promover essa melhoria. Diante deste cenário, este artigo objetiva analisar fatores que afetam o processo de auditoria de certificação do sistema de gestão da qualidade, de modo a indicar oportunidades de melhoria das auditorias. A pesquisa é delimitada a auditorias no setor aeroespacial, que são orientadas pela NBR 15100. Foi realizada uma survey com auditores experientes nos anos de 2009 e 2010. São identificados fatores como comunicação, seleção da equipe, conhecimento do setor e os resultados mostram a existência de discrepâncias consideráveis entre o nível de importância e de aplicação desses fatores nas organizações auditadas.

Resolution of a titanium implant fracture after a recurrent trauma

Post-traumatic complications occasionally lead to tooth loss as well as the need for future implants. However, rehabilitation with endosseous osseointegrated implants does not protect the patient from the risk of suffering a new trauma. Implant fracture and the damage of the hexagon are post-traumatic complications that guide the clinician to preparing a more intricate treatment plan. The authors present a clinical case of a recurrent trauma of maxillary implant fracture. The treatment plan was to remove the implants followed by autogenous bone grafting to correct the defect. Two titanium implants were replaced, followed by connective tissue graft after allowing complete the healing process of the bone graft to occur. In the postoperative period of 6 months, satisfactory results have been shown as regards soft and hard tissues wound healing.