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The assessment of the generated temperature by the drill bit in the bone tissue
Sampaio, Cátia; Fonseca, E.M.M.; Ribeiro, J.E.; Cerqueira, RuiThe main goal of this work is to evaluate the developed temperatures in bone tissue due to a drilling process, and verify the hypothesis of the thermal necrosis occurrence. Experimental methods were used in the laboratory based on the use of thermography and thermocouples during bone drilling in different materials. The follow-up of patients was also performed during the dental implants placement for data colle...
Doença de Krabbe — A Propósito de Dois Casos Clínicos
Sampaio, Virgínia; Belo, Emília; Frutuoso, Simão; Cerqueira, Rui; Mendanha, Sérgio; Maciel, IdalinaA doença de Krabbe também designada por leucodistrofia de células globoides é uma doença autossómica recessiva rara causada por um déficede um enzima, o galactosilceramidase. Os autores apresentam dois casos clínicos da forma de apresentação desta leucodistrofia no lactente.
Nine-year demography of the black-eared opossum Didelphis aurita (Didelphimorph...
Kajin,Maja; Cerqueira,Rui; Vieira,Marcus V.; Gentile,RosanaA population of the black-eared opossum, Didelphis aurita Wied-Neuwied 1826, was studied during 1997-2006 by capture-mark-recapture in the Atlantic Forest in the state of Rio de Janeiro. Cohorts were established with females marked still in the pouch, classified into five age classes. Population parameters were estimated using life tables. Survival was type III and mortality was greatest in age classes I and II...
Abrawayaomys ruschii Cunha & Cruz, 1979 (Rodentia, Cricetidae) no Estado do...
Pereira,Luciana Guedes; Geise,Lena; Cunha,André Almeida; Cerqueira,RuiAbrawayaomys ruschii é considerada como espécie rara devido à escassez de amostras em coleções científicas e em listas de faunas publicadas, dificultando qualquer proposta de classificação supragenérica entre os Sigmodontinae. Aqui apresentamos um novo registro de A. ruschii, sendo o primeiro para o estado do Rio de Janeiro (Aldeia Sapucai - Terra Indígena do Bracuí, Angra dos Reis). Por causa do pequeno número...
Determinantes da distribuição geográfica de Callithrix flaviceps (Thomas) (Prim...
Grelle,Carlos E. V.; Cerqueira,RuiO clima e a vegetação são conhecidos determinantes das distribuições geográficas de várias espécies de mamíferos. Neste estudo foi testada a importância do clima e da vegetação como fatores limitantes da distribuição geográfica do sagui Callithrix flaviceps (Thomas, 1903). As análises com o clima foram feitas a partir de nove fatores climáticos, estimados para cada localidade de ocorrência da espécie em estudo....
Distribuição altitudinal e simpatria das aves do gênero Drymophila Swainson (Pa...
Rajão,Henrique; Cerqueira,RuiForam descritas e analisadas as distribuições altitudinais das seis espécies de Drymophila Swainson, 1824, endêmicas da Mata Atlântica e identificados e discutidos os casos de simpatria. Para isso, foram usados dois conjuntos de dados, um em escala local (a Serra dos Órgãos, um segmento da Serra do Mar no Estado do Rio de Janeiro) e outro em escala regional (Mata Atlântica). Os registros e as altitudes na Serra...
Population structure and genetic variability of mainland and insular population...
Almeida,Francisca C.; Maroja,Luana S.; Moreira,Miguel A.M.; Seuánez,Héctor N.; Cerqueira,RuiSeven microsatellite loci were used to investigate the genetic variability and structure of six mainland and two island populations of the Neotropical water rat Nectomys squamipes, a South American semi-aquatic rodent species with a wide distribution. High levels of variability were found within mainland populations while island populations were less variable but the more differentiated in respect to allele num...
Experimental evidence and ecological perspectives for the adaptation of Schisto...
D'Andrea,Paulo Sérgio; Fernandes,Fabiano Araujo; Cerqueira,Rui; Rey,LuisDue to the semi aquatic habits and the overlap of the geographical distribution of the water-rat, Nectomys spp., with schistosomiasis endemic areas, these wild rodents are very likely to acquire Schistosoma mansoni infection in their daily activities. The role of the water-rat in the S. mansoni cycle would be substantiated if one could prove that these rodents acquire the parasite during their own activity time...
RAPD analysis of Nectomys squamipes (Rodentia, Sigmodontinae) populations
Almeida,Francisca C.; Moreira,Miguel A.M.; Bonvicino,Cibele R.; Cerqueira,RuiRandom amplified of polymorphic DNA (RAPD) analysis was used to assess genetic distance and the genetic structure of populations of Nectomys squamipes, a semiaquatic rodent species distributed along watercourses. DNA samples of five populations were analyzed using three primers, producing 45 scorable bands, 31 of which were polymorphic. There was a significant differentiation among populations [F ST = 0.17; phi...
Ecology of small mammals in a Brazilian rural area
D'Andrea,Paulo Sergio; Gentile,Rosana; Cerqueira,Rui; Grelle,Carlos Eduardo V; Horta,Claudia; Rey,LuisA small mammal study was carried out in Pamparrão valley, Sumidouro, State of Rio de Janeiro, Brazil, from June 1991 to July 1996. The area was characterised by small rural properties with vegetable plantations, pasture lands and small forest fragments. Small mammals were captured in seven line transects along the valley. Eleven small mammal species were captured: the didelphid marsupials Didelphis aurita, Phil...
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