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Rio de Janeiro, Brazil

Magalhaes T.,Cidade Universitaria
Parasites and Vectors | Year: 2014

The aim of this Letter is to call attention to the presence of iron-containing or heme aggregates seen within or near the peritrophic matrix (PM) in published Anopheles gambiae and Aedes aegypti midgut micrographs. The micrographs shown here suggest that the PM of An. gambiae adult female is not a homogenous layer and instead may have a peritrophin layer surrounded by heme aggregates that are possibly associated to other molecules involved in their formation. In depth studies addressing PM structure in different mosquito species are needed, as these will be important to continue clarifying the roles of the PM. © 2014 Magalhaes; licensee BioMed Central Ltd. Source

Soares Luis H.P.,Cidade Universitaria | Soares Luis H.P.,University of Lisbon | Assuncao V.A.,Polytechnic Institute of Portalegre | Soares Luis L.F.,Polytechnic Institute of Portalegre
International Journal of Adolescent Medicine and Health | Year: 2016

Purpose: Oral health has a profound impact on the health of adolescents. The aim of the present study was to obtain information on habits, knowledge and oral hygiene attitudes of Portuguese teenagers and to study the gender differences concerning these issues. Methods: A total of 1203 adolescents participated in the study (55.8% females; mean age, 14.9 years). To recruit participants, a national network of community dental hygienists, working in the health centers, was created, and adolescents were contacted at the schools. A questionnaire was applied in the classroom, during school hours, under supervision of one researcher and the classroom teacher, after collection of informed consent forms. Results: Portuguese adolescents do not seem to have dental fear but have some anxiety when at the dental office; girls are more anxious than boys. Girls are also more concerned with esthetics and aware of dental problems and care about oral health of family and friends. Parental supervision is more relevant for boys in order to obtain better compliance with dental care; however, 97.2% of the adolescents do not consider maintaining teeth throughout the lifetime as relevant. Conclusion: Teenagers recognize dental professionals as educators and oral health as relevant in their lives. It is possible to assume that gender has an influence on adolescent's habits, behavior and attitudes regarding oral hygiene. There is a difference between boys and girls concerning their habits, knowledge and attitudes in dental hygiene; this difference may show the need to create different strategies for oral health promotion for these two groups of adolescents. © 2016 by De Gruyter. Source

Salles L.,Cidade Universitaria | Balbo J.T.,University of Sao Paulo | da Silva Pereira D.,Federal University of Santa Maria
International Journal of Pavement Research and Technology | Year: 2015

As a proposed long-term pavement solution for bus stops and corridors in highly urbanized areas, four experimental continuously reinforced concrete pavement (CRCP) sections with different percentages of longitudinal steel were built in São Paulo, Brazil. The pavement sections are only 50 meters long each, a short construction length in comparison to traditional CRCP, which is normally built as long as the construction process allows. A four-year cracking survey of the experimental sections showed that the shorter section length, perhaps due in part to the lack of anchorage, results in a cracking pattern unlike that of the CRCP with traditional lengths. Additionally, two non-destructive tests were carried out to evaluate the structural performance of the experimental sections. First, deflection tests using a falling weight deflectometer (FWD) were conducted to measure the load transfer efficiency (LTE) across all cracks and to determinate slab parameters by back calculation. Second, dynamic load tests to obtain the concrete stresses under a known load. The results show that the LTE values are adequate (above 90%) in all sections, despite its distinct crack pattern and that tensile stresses at the bottom of the slab are within critical strength values for the concrete. The results from this experimental study are discussed in light of the current literature for CRCP design and performance. © Chinese Society of Pavement Engineering. Source

De Albuquerque L.S.C.,Federal University of Pernambuco | De Souza T.B.,Federal University of Pernambuco | Maia A.C.D.,Cidade Universitaria | Iannuzzi L.,Federal University of Pernambuco
Journal of Insect Science | Year: 2014

In order to obtain information on the biology of the masked chafer, Cyclocephala paraguayensis Arrow (Scarabaeidae: Dynastinae: Cyclocephalini), and its immature morphology, the beetle life cycle was studied under laboratory conditions. After field collection, adults were placed inside containers filled with soil obtained in the original capture to provide an oviposition site after mating ocurred. Eggs were collected daily and isolated for manipulation experiments and life cycle observations. Detailed information about the eggs, instars and life cycle duration, and morphological features of immature stages were noted and examined. Egg viability was higher in the "nonmanipulated" batch. The complete ontogenic cycle of C. paraguayensis was 171 ± 11 days (n = 7). Despite the records of Cyclocephala being crop pests, reared larvae of C. paraguayensis thrived and developed into well-formed, fertile adults on an entirely saprophagous diet, indicating that they are not rhizophagous in the wild. The third instar can be distinguished from the other species mainly by the following unique characters: maximum width of the head capsule, distal antennal setae, and bifurcated setae on the raster. © 2014, Library of the University of Arizona. All rights reserved. Source

Uemoto L.,UFF | Nascimento De Azevedo R.,Avenida Pastor Martin Luther King Jr | Almeida Alfaya T.,UFF | Depes De Gouvea C.V.,UFF | Cavalcanti Garcia M.A.,Cidade Universitaria
Current Pain and Headache Reports | Year: 2013

The aim of the present review is to discuss two forms of treatment for myofascial pain: laser therapy and dry needling. Although studies have reported the deactivation of myofascial trigger points with these two methods, clinical trials demonstrating their efficacy are scarce. The literature reports greater efficacy with the use of laser over dry needling. It has been suggested that improvements in microcirculation through the administration of laser therapy may favor the supply of oxygen to the cells under conditions of hypoxia and help remove the waste products of cell metabolism, thereby breaking the vicious cycle of pain, muscle spasm and further pain. While laser therapy is the method of choice for patients with a fear of needles and healthcare professionals inexperienced with the dry needling technique, further controlled studies are still needed to prove the greater efficacy of this method. © 2013 Springer Science+Business Media New York. Source

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