Healing of critical-size cranial defects in guinea pigs using a bovine bone-derived resorbable membrane

Purpose: To investigate the healing of critical-size cranial bone defects (9-mm-diameter) in guinea pigs treated with a bovine bone-derived resorbable membrane. Materials and Methods: A sample of 42 guinea pigs was divided into test (n = 20), control (n = 20), and standard (n = 2) groups. A full-thickness trephine defect was made in the fronto-parietal bone of each animal. In the test group, the internal and external openings of the defect were each closed with a separate membrane, and the space between them was filled with blood clot and a central spacer. In the control group, the defect was filled only with the blood clot and spacer. At 1, 3, 6, and 9 months later, the calvarias (5 per period) for both the test and control groups were collected, fixed, radiographed, and histologically processed. The Standard-group animals were sacrificed immediately after surgery and used to determine the initial size of defect radiographically. The areas of defects in the radiographs were measured with image-analysis software and were compared between groups and periods by multiple regression analysis with the Bonferroni correction. Results: At 1 and 3 months, newly formed woven bone was histologically observed in both test and control groups. Radiographically, this new bone occupied an average of 32% of the defect area at 1 month and 60% at 3 months in the test group. In the control group, 21% of the defect was filled at 1 month and 39% at 3 months. However, the differences between treatments were not statistically significant (P > .05). At 6 and 9 months, a significant increase in newly formed lamellar bone was seen histologically in both groups. Radiographically, for the test group, the new bone occupied an average of 82% of the defect area at 6 months and 96% at 9 months. For the control group, new bone composed an average of 45% of the defect area at 6 months and 40% at 9 months. The differences between the test and control groups were statistically significant at 6 and 9 months (P < .05). Complete or almost complete filling of the defect was observed in several cases. Conclusion: It was concluded that the bovine bone-derived membrane is highly biocompatible and is able to promote good healing of critical-size defects in calvaria of guinea pig.

The anatomy of two-rooted mandibular canines determined using micro-computed tomography

P>Aim To investigate the internal and external anatomy of extracted human mandibular canines with two roots and two distinct canals using micro-computed tomography (mu CT). Methodology Fourteen two-rooted human mandibular canines were scanned using a high-resolution mu CT system (SkyScan 1174v2; SkyScan N.V., Kontich, Belgium). The images were processed to evaluate the size of the roots, the furcation regions, the presence of accessory canals, the mean distances between several anatomical landmarks, the position of the apical foramina, the direction of root curvatures, the cross-sectional appearances (SMI index), the volume and surface areas of the root canals. Results Root bifurcation was located in both apical (44%, n = 6) and middle (58%, n = 8) thirds of the root. The size of the buccal and lingual roots was similar in 29% of the sample. From a buccal view, no curvature towards the lingual or buccal direction occurred in either roots. From a proximal view, no straight lingual root occurred. In both views, S-shaped roots were found in 21% of the specimens. Location of the apical foramen varied considerably, tending to the mesio-buccal aspect of both roots. Lateral and furcation canals were observed mostly in the cervical third in 29% and 65% of the sample, respectively. The structure model index (SMI) index ranged from 1.87 to 3.86, with a mean value of 2.93 +/- 0.46. Mean volume and area of the root canals were 11.52 +/- 3.44 mm3 and 71.16 +/- 11.83 mm2, respectively. Conclusions The evaluation of two-rooted mandibular canines revealed that bifurcations occurred in the apical and middle third. S-shaped roots were found in 21% of the specimens. Mean volume, surface area and SMI index of the root canals were 11.52 mm3, 71.16 mm2 and 2.93, respectively.

Domestic use of a disclosing solution for denture hygiene: a randomised trial

Objectives: The purpose of this study was to investigate the effect of the domestic use of a disclosing agent for denture hygiene. Materials and methods: Completely edentulous participants wearing maxillary dentures were randomly assigned to one of the three intervention groups: (1) Follow-up only (control; n = 12); (2) Oral and denture hygiene instructions (n = 10); (3) Instructions associated with the home use of a disclosing agent (1% neutral red; n = 10). Biofilm coverage area (%) over internal and external surfaces of the maxillary denture was assessed at baseline and after 14 and 90 days. Data were evaluated by generalised estimating equations based on score tests (alpha = 0.05). Results: The participants presented low changes for areas of biofilm coverage (14 days (%): internal: GI = 1.4 +/- 0.9; GII = 1.5 +/- 1.3; GIII = -0.4 +/- 0.9; external: GI = 1.4 +/- 1.5; GII = 1.5 +/- 1.4; GIII = -0.4 +/- 0.9; 90 days (%): internal: GI = 2.0 +/- 0.9; GII = 2.2 +/- 1.4; GIII = 0.3 +/- 1.0; external: GI = 2.1 +/- 1.4; GII = 2.2 +/- 1.5; GIII = 0.3 +/- 0.9). Changes were similar for the three groups (p = 0.293) and were not influenced by the test time (p = 0.218). Conclusion: It can be concluded that the home use of a disclosing agent for denture hygiene does not improve the removal of the biofilm, particularly for patients with adequate oral hygiene habits.

Examining the effects of work externalization through the lens of social identity theory

This study examines whether dissimilarity among employees that is based on their work status (i.e., whether they are temporary or internal workers) influences their organization-based self-esteem, their trust in and attraction toward their peers, and their altruism. A model that is based on social identity theory posits that work-status dissimilarity negatively influences each outcome variable and that the strength of this relationship varies depending on whether employees have temporary or internal status and the composition of their work groups. Results that are based on a survey of 326 employees (189 internal and 137 temporary) from 34 work groups, belonging to 2 organizations, indicate that work-status dissimilarity has a systematic negative effect only on outcomes related to internal workers when they work in temporary-worker-dominated groups.

An analysis of why telehealth systems in Australia have not always succeeded

Telehealth programmes are rather similar to humans in the way that they are planned, develop, grow and ultimately die or disappear. To achieve good life expectancy for a telehealth programme there appear to be three major needs: nurturing, which includes the provision of money, ideas, education, training and innovation; experience, which involves an integrated management process, the achievement of long and wide patterns of usage, the development of updated policies and procedures and the involvement of multiple disciplines; success, which involves evidence of outcomes, evaluation and research, and, most important, the sharing of information through scientific and popular press publications, and conferences and collaborations with internal and external groups. The future of telehealth in Australia is at a watershed. There are now a substantial number of programmes, and there has been a large amount of financial and human investment in telehealth around the nation. There is, however, no forum for national leadership, no national association and little support at federal government level.

Relationships of extant lower Brachycera (Diptera): a quantitative synthesis of morphological characters

With over 80 000 described species, Brachycera represent one of the most diverse clades of organisms with a Mesozoic origin. Larvae of the majority of early lineages are detritivores or carnivores. However, Brachycera are ecologically innovative and they now employ a diverse range of feeding strategies. Brachyceran relationships have been the subject of numerous qualitative analyses using morphological characters. These analyses are often based on characters from one or a few character systems and general agreement on relationships has been elusive. In order to understand the evolution of basal brachyceran lineages, 101 discrete morphological characters were scored and compiled into a single data set. Terminals were scored at the family level, and the data set includes characters from larvae, pupae and adults, internal and external morphology, and male and female terminalia. The results show that all infraorders of Brachycera are monophyletic, but there is little evidence for relationships between the infraorders. Stratiomyomorpha, Tabanomorpha, and Xylophagomorpha together form the sister group to Muscomorpha. Xylophagomorpha and Tabanomorpha are sister groups. Within Muscomorpha, the paraphyletic Nemestrinoidea form the two most basal lineages. There is weak evidence for the monophyly of Asiloidea, and Hilarimorphidae appear to be more closely related to Eremoneura than other muscomorphs. Apsilocephalidae, Scenopinidae and Therevidae form a clade of Asiloidea. This phylogenetic evidence is consistent with the contemporaneous differentiation of the main brachyceran lineages in the early Jurassic. The first major radiation of Muscomorpha were asiloids and they may have diversified in response to the radiation of angiosperms in the early Cretaceous.

Cognitive style factors affecting database query performance

As end-user computing becomes more pervasive, an organization's success increasingly depends on the ability of end-users, usually in managerial positions, to extract appropriate data from both internal and external sources. Many of these data sources include or are derived from the organization's accounting information systems. Managerial end-users with different personal characteristics and approaches are likely to compose queries of differing levels of accuracy when searching the data contained within these accounting information systems. This research investigates how cognitive style elements of personality influence managerial end-user performance in database querying tasks. A laboratory experiment was conducted in which participants generated queries to retrieve information from an accounting information system to satisfy typical information requirements. The experiment investigated the influence of personality on the accuracy of queries of varying degrees of complexity. Relying on the Myers–Briggs personality instrument, results show that perceiving individuals (as opposed to judging individuals) who rely on intuition (as opposed to sensing) composed queries more accurately. As expected, query complexity and academic performance also explain the success of data extraction tasks.

Winding patterns for actively shielded shim coils with asymmetric target-fields

A method is presented for calculating the currents and winding patterns required to design independent zonal and tesseral shim coils for magnetic resonance imaging. Both actively shielded and unshielded configurations are considered, and the region of interest can be located asymmetrically with respect to the coil's length. Streamline, target-field and Fourier-series methods are utilized. The desired target-field is specified at two cylindrical radii, on and inside a circular conducting cylinder of length 2L and radius a. The specification is over some asymmetric portion pL < z < qL of the coil's length (-1 < p < q < 1). Arbitrary functions are used in the outer sections, -L < z < pL and qL < z < L, to ensure continuity of the magnetic field across the entire length of the coil. The entire field is then periodically extended as a half-range cosine Fourier series about either end of the coil. The resultant Fourier coefficients are then substituted into the Fourier-series expressions for the internal and external magnetic fields, and current densities and stream functions on both the primary coil and shield. A contour plot of the stream function directly gives the required coil winding patterns. Spherical harmonic analysis and shielding analysis on field calculations from a ZX shim coil indicate that example designs and theory are well matched.

Os controles

O texto explora a quest??o dos controles administrativos na It??lia, tanto no que se refere aos controles internos quanto no que se refere aos controles externos. O autor aponta a debilidade dos controles internos, em particular no tocante aos controles de gest??o, e analisa o tipo mais difundido de controle externo na ordena????o italiana, os controles preventivos de legitimidade, que na sua opini??o deveriam ser substitu??dos pelos controles sucessivos sobre a atividade ou sobre a gest??o administrativas. O texto fala ainda da evolu????o das rela????es entre o Tribunal de Contas e o Parlamento, das tend??ncias recentes de transforma????o na ??rea de controle, incluindo aspectos relativos ?? reforma constitucional e ?? Uni??o Europ??ia, e das novidades legislativas surgidas em 1993 e 1994.

Auditoria interna como instrumento de controle social na administra????o p??blica

Sob o ponto de vista constitucional os controles interno e externo somam-se a fim de promover responsabiliza????o permanente dos gestores p??blicos em torno dos princ??pios constitucionais da administra????o p??blica: legalidade, impessoalidade, moralidade, publicidade e efici??ncia. Neste artigo a argumenta????o segue no sentido de incrementar as discuss??es acerca da import??ncia de que em todos os n??veis da administra????o p??blica e nos tr??s poderes ??? Legislativo, Executivo e Judici??rio ??? seja implantada a auditoria interna, como unidade respons??vel pela an??lise do sistema de controle interno e a interlocu????o com o controle externo. Embora a administra????o p??blica no Brasil ainda se estruture hibridamente sob o sistema burocr??tico e o sistema gerencial, o fato ?? que os administradores p??blicos possuem na auditoria interna importante mecanismo gerencial que, como regra, contribui para detectar e propor a corre????o dos desperd??cios e procedimentos equivocados, principalmente antecipando-se a essas ocorr??ncias. Neste artigo, ?? apresentado ainda o exemplo da cria????o da auditoria interna no Instituto de Pesos e Medidas do Estado de S??o Paulo (Ipem-SP), sua interlocu????o com o Controle Externo e os resultados no ??mbito da autarquia.

Auditoria e gestão : um estudo de caso dos trabalhos auditoriais realizados no IFES

Por intermédio deste trabalho, foi possível detectar o acúmulo de recomendações, o que possivelmente possa indicar a presença de falhas na gestão. Dessa forma o objetivo deste trabalho é investigar as causas e propor soluções que contribuam para o atendimento das recomendações pendentes e para a melhoria de tomada de decisões administrativas. Tomou-se como apoio o Relatório de Auditoria Anual de Contas nº 201305863 e forma apresentadas ferramentas que auxiliem a gestão no processo gerencial de tomadas de decisões. O universo pesquisado compõe-se dos gestores do IFES, que vivem a rotina burocrática dessa instituição de ensino, o que possibilita obter uma percepção do inter-relacionamento profissional junto à AUDIN (Auditoria Interna). A coleta de dados foi feita por meio de questionário, tendo foco na percepção dos gestores de como os trabalhos de auditoria são realizados no IFES, e, paralelamente, buscou informações capazes de municiar a AUDIN com ferramentas capazes de melhor auxiliar no assessoramento administrativo. A pesquisa sugere que a Auditoria Interna e os gestores incorporem diversos conhecimentos para se obter um melhor desempenho frente às demandas do controle interno e externo. Foi observado um acúmulo significativo de recomendações, o que indica a presença de possíveis falhas na gestão do referido órgão. Assim sendo, a pesquisa apresentou resultados que posicionam a Auditoria Interna à margem do processo gerencial do IFES.

Determinants of environmental disclosure in the annual reports of large companies operating in Portugal

Similarly to what has happened in other countries, since the early 1990s Portuguese companies have developed corporate environmental reporting practices in response to internal and external factors. This paper is based on empirical research directed to both the study of environmental reporting practices developed by Portuguese companies and the identification of the factors that explain the extent to which these companies disclose environmental information. This study focuses on the environmental disclosures made in the annual reports by a sample of 109 large firms operating in Portugal during the period 2002-04. Using the content analysis technique we have developed an index in order to assess the presence of the environmental disclosures in companies’ annual reports and their breadth. Based on the extant literature, several characteristics relating to firms’ attributes were selected and their influence on the level of environmental disclosure was tested empirically. The selected explanatory variables were firm size, industry membership, profitability, foreign ownership, quotation on the stock market and environmental certification. The results reveal that, in spite of the fact that the level of environmental information disclosed during the period 2002-04 is low, the extent of environmental disclosure has increased as well as the number of Portuguese companies that disclose environmental information. Moreover, the firm size and the fact that a company is listed on the stock market are positively related to the extent of environmental disclosure. This study adds to the international research on environmental disclosure by providing empirical data from a country, Portugal, where empirical evidence is still relatively unknown, extending the scope of the current understanding of the environmental reporting practices.

Da criação de uma Ordem Profissional

O objetivo central deste estudo é a análise da perspetiva dos Assistentes Sociais sobre a necessidade/ importância da criação de uma Ordem Profissional e, consequentemente de um Código Deontológico (português) para a profissão. Privilegiou-se a investigação qualitativa, construída a partir da interpretação das narrativas das entrevistas, da pesquisa bibliografia e documental. O carácter qualitativo do trabalho concretiza-se por meio de uma lógica abdutiva, que pretende compreender a realidade através da construção dos seus atores (Blaikie, 2000). Para o efeito construímos duas dimensões de análise: a primeira refere-se à análise e compreensão da necessidade de criação de uma Ordem Profissional e a segunda dimensão integra a análise da opinião dos informantes sobre a necessidade de criação de um código deontológico português. Os resultados obtidos nesta investigação demonstram de forma unânime, a importância da criação de uma Ordem Profissional para a legitimação, representatividade e autorregulação da categoria profissional. Nas razões apontadas para a importância da Ordem surgem, quer justificações que se centram na necessidade de uniformização da prática, demonstrando uma visão mais burocrática e tecnicista da profissão, no qual os métodos se sobrepõem à relação, quer razões de legitimação e de necessidade de representação coletiva junto à classe política, relacionada com uma vertente humanista, no qual os aspetos relacionais e comportamentais devem fazer parte da prática profissional de forma a uma maior adequação dos mecanismos de intervenção no indivíduo. Nas razões apontadas para o insucesso da não criação de uma Ordem Profissional, a maioria realçou motivos internos e externos inerentes à profissão. A questão interna tem a ver com a falta de associativismo e união dos Assistentes Sociais em se mobilizarem por uma causa comum. A questão externa relaciona-se com interesses políticos, bem como a questão coletiva dos profissionais. Os princípios subjacentes a um código deontológico são os inerentes aos direitos humanos e justiça social e de atitudes associadas à profissão.

Ler em tempo livre durante o Estado Novo: A função do suplemento infantil Pim-Pam-Pum na formação da criança

RESUMO: Esta dissertação tem como objectivo compreender a influência da ideologia do Estado Novo nos conteúdos inseridos no suplemento infantil Pim-Pam-Pum. Visa ainda relacionar, num determinado momento temporal o suplemento infantil de um dos jornais mais lidos da época O Século, com a ideologia do Estado Novo. Procura identificar os valores incutidos nos números a analisar no Pim-Pam-Pum num período de dois anos. O período histórico em análise do suplemento infantil Pim-Pam-Pum compreende os exemplares entre 1953 a 1955. Como principais conclusões do estudo retira-se que o suplemento infantil procurava educar o seu público de forma lúdica. Por outro lado, transmitia e incutia em colaboração com a família os principais valores salazaristas. A imprensa escrita passa a ser uma arma de propaganda ideológica do Estado Novo numa tentativa de conter informação desfavorável ao regime perante as pressões internas e externas. Com a institucionalização da censura após a segunda Guerra Mundial, a vigilância e o exame das publicações dos organismos competentes em colaboração com a própria auto-censura dos jornalistas, simplificou-se. No entanto a imprensa procurou cumprir com a sua missão de divulgação cultural e lúdica através de jornais diários, revistas e suplementos infantis. ABSTRACT:The aim of this dissertation is to understand the influence of the ideology of the "Estado Novo" in the contents inserted in the children's supplement Pim-Pam-Pum. It also aims to relate, in a certain historical period, the children’s supplement of one of the most important newspapers of the time, "O Século", with the ideology of the "Estado Novo". In addition, it intends to identify the values ingrained in the numbers to be analysed in Pim-Pam-Pum in a period of two years. The period under analysis of the children's supplement Pim-Pam-Pum includes the numbers from 1953 to 1955. One of the main conclusions of this study is that the children's aforementioned supplement aimed to educate its audience in a joyful manner. On the other hand, it transmitted as well as inculcated with the families’ collaboration the main Salazarist values. The press becomes a weapon of ideological propaganda of the "Estado Novo" in an attempt to keep harmful information to the regime from the internal and external pressures. With the institucionalization of censorship after the Second World War, the careful surveillance of publications by the competent and relevant organisms in collaboration with the censorship made by the journalists themselves, was simplified. However, the press tried to accomplish its mission of cultural and playful diffusion by means of newspapers, magazines and children's supplements.

Estudo para a implementação de plataformas de e-learning no sistema de formação dos recursos humanos da saúde: o caso particular dos enfermeiros de um hospital privado

Mestrado em Intervenção Sócio-Organizacional na Saúde - Área de especialização: Políticas de Administração e Gestão de Serviços de Saúde.