O debate modernidade / pós-modernidade e a crise socioambiental: um estudo sobre teses e dissertações brasileiras em educação ambiental

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

As orações subordinadas substantivas em função de sujeito: questões de ensino

This paper attempts to answer how the descriptive analysis of the substantive subordination clauses made within the realm of academic research can contribute to the effective teaching of those structures in the Elementary School. After showing how the subordination has been treated in grammar school and textbooks and pointing at some recurring problems in the presentation of the subject, we present the treatment of subordinate clauses with the function of subject in two descriptive grammars of Portuguese, in order to ascertain to what extent the relevant aspects of the description of those clauses are related to the traditional way of teaching. From those descriptive works, we selected some functional features considered to be essential for the treatment of the subject in the Elementary School.

A internet e a prática da leitura: o uso da rede por acadêmicos do sexto período do curso superior em Tecnologia em Alimentos

Pós-graduação em Educação - FFC

Caminhos da inclusão percorridos pelo Brasil

This paper aims to discuss and reflect the trajectory of inclusive education in Brazil, for such it is important to bring as she is becoming. The notion of inclusion is directly related to the right to equal that from the eighteenth century marks the social constructions and political ideas and social relations stuck on democracy and / or equality in the world, as well as in Brazil. But what is presented in the practice of social relations today is as an equal and non-homogeneity and recognition of identities, cultures and specific needs of each. Inclusion and integration are being discussed all over the country, but it's still a fact that deserves more involvement by all actors of society. She was raised primarily in the form of laws, decrees, documents, and now gaining ground in academic research showing the differences between the two terms, and finally is reaching the school, although it is still insufficient participation, with regard to transformation of the trader concerned with working in a school for all, along the lines of an egalitarian society with respect for diversity. To this end this paper argues the importance of continuing education in all areas of knowledge for the implementation of public policies actually everyone regardless of their differences.

A temática da violência escolar na formação docente inicial: das lacunas existentes às discussões necessárias

This paper emerged from a reflection on the troubles afflicting and shocked teachers, especially early in his career, among which stands out both in studies and in reports propagated by the teachers themselves: the violence manifested in and out of classrooms. Given this finding and the obvious need for overcoming beyond ephemeral measures, this research outlines two equally important goals: a) incite the discussion of violence at the time of initial teacher training as well as the emergence of new studies concerning this subject in academic research and b) transgress the tradition of research that consists in recommending prescriptions to be applied about how banning school violence, disregarding the peculiarities of each context. These objectives are derived from following question: which strategies are developed in undergraduate courses that aim to preparing of future teachers to deal with the phenomenon of violence in elementary school? Intending to answer this question and, therefore, contemplate the objectives outlined we opted for specialized bibliographic material analysis, systematically selected as the method. As a main result, it was found that the discussion of the theme of school violence in the initial teacher training is something still scarce in practice and incipient in the sphere of research. Therefore, we emphasize the importance of strengthening of this discussion so that when they get into career teaching, future teachers feel adequately subsidized up to face the everyday challenges that may manifest over the profession.

Clinical assessment of nifedipine-induced gingival overgrowth in a group of brazilian patients

Although it has been established that nifedipine is associated with gingival overgrowth (GO), there is little information on the prevalence and severity of this condition in the Brazilian population. The aim of this study was to assess the occurrence of nifedipine-induced GO in Brazilian patients and the risk factors associated using a Clinical Index for Drug Induced Gingival Overgrowth (Clinical Index DIGO). The study was carried out on 35 patients under treatment with nifedipine (test group) and 35 patients without treatment (control group). Variables such as demographic (age, gender), pharmacological (dose, time of use), periodontal (plaque index, gingival index, probing depth, clinical insertion level, and bleeding on probing), and GO were assessed. Statistical analysis showed no association between GO and demographic or pharmacological variables. However, there was an association between GO and periodontal variables, except for plaque index. According to our study, the Clinical Index DIGO can be used as a parameter to evaluate GO. Therefore, we conclude that the presence of gingival inflammation was the main risk factor for the occurrence of nifedipine-induced GO.

Calcium silicate-based cements associated with micro-and nanoparticle radiopacifiers: physicochemical properties and bioactivity

The aim of this study was to evaluate the physicochemical properties and bioactivity of two formulations of calcium silicate-based cements containing additives (CSCM) or resin (CSCR), associated with radiopacifying agents zirconium oxide (ZrO2) and niobium oxide (Nb2O5) as micro- and nanoparticles; calcium tungstate (CaWO4); and bismuth oxide (Bi2O3). MTA Angelus was used as control. Methods. Surface features and bioactivity were evaluated by scanning electron microscopy and the chemical composition by energy dispersive X-ray spectrometry (EDS-X). Results. CSCM and CSCR presented larger particle sizes than MTA. Hydroxyapatite deposits were found on the surface of some materials, especially when associated with the radiopacifier with ZrO2 nanoparticles. All the cements presented calcium, silicon, and aluminum in their composition. Conclusion. Both calcium silicate-based cements presented composition and bioactivity similar to MTA when associated with the radiopacifiers evaluated.

Adaptação e uso de ferramenta de visualização para o estudo do conjunto de tratados entre os membros da ONU

The present project consists in an exploratory research centralized on the main patterns of the database of treaties registered by the Secretariat of the United Nations due to its obligations stated at Article 102 of the organization?s Charter. More specifically its purpose is to adapt and apply computer visualization tools to this database. The visualization tools developed here aim the exploration, discovery and communication of relevant features to International Relations research. These tools allow the manipulation of selected variables in the database, such as dates, participant actors and treaties subject. The visual representations furthermore facilitate the analysis of several dimensions of subsets chosen by the user, such as qualitative, temporal and geographic distribution. These proceedings help bring hidden patterns to the surface. The discussion about the limits of these tools has also a central place on this research. We listed and analyzed the characteristics and steps which could have a relevant impact on the final result

Acute auditory stimulation with different styles of music influences cardiac autonomic regulation in men

No clear evidence is available in the literature regarding the acute effect of different styles of music on cardiac autonomic control. The present study aimed to evaluate the acute effects of classical baroque and heavy metal musical auditory stimulation on Heart Rate Variability (HRV) in healthy men. In this study, HRV was analyzed regarding time (SDNN, RMSSD, NN50, and pNN50) and frequency domain (LF, HF, and LF / HF) in 12 healthy men. HRV was recorded at seated rest for 10 minutes. Subsequently, the participants were exposed to classical baroque or heavy metal music for five minutes through an earphone at seated rest. After exposure to the first song, they remained at rest for five minutes and they were again exposed to classical baroque or heavy metal music. The music sequence was random for each individual. Standard statistical methods were used for calculation of means and standard deviations. Besides, ANOVA and Friedman test were used for parametric and non-parametric distributions, respectively. While listening to heavy metal music, SDNN was reduced compared to the baseline (P = 0.023). In addition, the LF index (ms(2) and nu) was reduced during exposure to both heavy metal and classical baroque musical auditory stimulation compared to the control condition (P = 0.010 and P = 0.048, respectively). However, the HF index (ms(2)) was reduced only during auditory stimulation with music heavy metal (P = 0.01). The LF/HF ratio on the other hand decreased during auditory stimulation with classical baroque music (P = 0.019). Acute auditory stimulation with the selected heavy metal musical auditory stimulation decreased the sympathetic and parasympathetic modulation on the heart, while exposure to a selected classical baroque music reduced sympathetic regulation on the heart.

Radiopacity evaluation of contemporary luting cements by digitization of images

The aim of this study was to evaluate the radiopacity of two conventional cements (Zinc Cement and Ketac Cem Easymix), one resin-modified glass ionomer cement (RelyX Luting 2) and six resin cements (Multilink, Bistite II DC, RelyX ARC, Fill Magic Dual Cement, Enforce and Panavia F) by digitization of images. Methods. Five disc-shaped specimens (10×1.0 mm) were made for each material, according to ISO 4049. After setting of the cements, radiographs were made using occlusal films and a graduated aluminum stepwedge varying from 1.0 to 16 mm in thickness. The radiographs were digitized, and the radiopacity of the cements was compared with the aluminum stepwedge using the software VIXWIN-2000. Data (mmAl) were submitted to one-way ANOVA and Tukey's test (=0.05). Results. The Zinc Cement was the most radiopaque material tested (<0.05). The resin cements presented higher radiopacity (<0.05) than the conventional (Ketac Cem Easymix) or resin-modified glass ionomer (RelyX Luting 2) cements, except for the Fill Magic Dual Cement and Enforce. The Multilink presented the highest radiopacity (<0.05) among the resin cements. Conclusion. The glass ionomer-based cements (Ketac Cem Easymix and RelyX Luting 2) and the resin cements (Fill Magic Dual Cement and Enforce) showed lower radiopacity values than the minimum recommended by the ISO standard.

Toxicity and loss of mitochondrial membrane potential induced by Alkyl Gallates in Trypanosoma cruzi

American trypanosomiasis or Chagas disease is a debilitating disease representing an important social problem that affects, approximately, 10 million people in the world. The main aggravating factor of this situation is the lack of an effective drug to treat the different stages of this disease. In this context, the search for trypanocidal substances isolated from plants, synthetic or semi synthetic molecules, is an important strategy. Here, the trypanocidal potential of gallates was assayed in epimastigotes forms of T. cruzi and also, the interference of these substances on the mitochondrial membrane potential of the parasites was assessed, allowing the study of the mechanism of action of the gallates in the T. cruzi organisms. Regarding the preliminary structure-activity relationships, the side chain length of gallates plays crucial role for activity. Nonyl, decyl, undecyl, and dodecyl gallates showed potent antitrypanosomal effect (IC50 from 1.46 to 2.90 μM) in contrast with benznidazole (IC50 = 34.0 μM). Heptyl gallate showed a strong synergistic activity with benznidazole, reducing by 105-fold the IC50 of benznidazole. Loss of mitochondrial membrane potential induced by these esters was revealed. Tetradecyl gallate induced a loss of 53% of the mitochondrial membrane potential, at IC50 value.

Evaluation of the use of probiotic acid lactic bacteria in the development of chicken hambúrguer

The objective of this study was to investigate the effect of fermentation with Lactobacillus acidophilus CRL 1014 on the physicochemical, microbiological and sensory characteristics of a hamburger product like processed with chicken meat and okara flour, with reduction of curing salts. A mixture of ingredients containing 90% chicken meat and 10% okara flour was subjected to the following treatments: F1: fermented with Lactobacillus acidophilus; F2:75 mg nitrite/kg and fermented with Lactobacillus acidophilus; F3: 150 mg nitrite/kg and unfermented. The quality of the “hamburgers” was assessed by physical and chemical analysis (pH, cooking yield and shrinkage), chemical composition, microbiological tests (Salmonella spp., count of sulphite-reducing clostridia, staphylococos coagulase-positive, total coliforms and Escherichia coli) and sensory analysis (sensory acceptance and purchase intent). During the first six days of fermentation, there was a decrease in pH from approximately 6.33 to 5.10. All the samples showed the same chemical composition (p < 0.05). The fermentation process was observed to inhibit the multiplication of microorganisms of several groups: coagulasepositive staphylococci, sulphite-reducing clostridia, Salmonella spp. and E. coli. The different “hamburgers” formulations showed high scores for all the sensory attributes evaluated, without differing from each other (p < 0.05). The results showed that the use of L. acidophilus CRL 1014 enabled the production of a safe product, with good physicochemical and sensory characteristics, in the absence of curing salts.

O professor de biologia e a possibilidade de uso de diferentes abordagens de ensino com materiais midiáticos a fim de desenvolver a criticidade do aluno do ensino médio

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O professor de biologia e a possibilidade de uso de diferentes abordagens de ensino com materiais midiáticos a fim de desenvolver a criticidade do aluno do ensino médio

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Do primeiro impacto à prática profissional

A partir da experiência pessoal da autora - seja como professora universitária de teatro de animação ou como diretora e encenadora - este artigo apresenta um panorama atual da formação profi ssional nessa área. Cinco aspectos foram considerados: vivências iniciais; ofi cinas, palestras e leituras; pesquisas acadêmicas e pesquisas compartilhadas em processo de montagem