RESUMEN
African mahogany species (Khaya spp.) have proven to be promising in the Brazilian forestry scenario, replacing native mahogany owing to their medium-fast growth and relevant timber value. This study aimed to carry out forest inventory and assessments of a Khaya grandifoliola plantation in the first years after planting, test hypsometric models to describe tree growth, and identify the maximum commercial stem yield (i.e., greater than 6 m in height). The stand was located in the municipality of Piracanjuba (GO), where seedlings of seed origin were used. Twenty random plots with a 15 m radius were allocated, and the total height (HT), stem height (HS), diameter at breast height (DBH), crown area, and forest canopy were measured. Four hypsometric models were employed in this study. The best equation was selected based on determination coefficients and standard errors. Further, the models were cross-validated to evaluate predictability and bias. At four years of planting, the largest class of HS was found to range from 3.1 to 4.1 m, and most trees had a DBH ranging from 0.084 to 0.126 m. The percentage of trees with stems > 6 m was 8.35%. The linear model ensured more consistent results for estimating HT, while the quadratic and Weibull models led to more consistent results for HS. By using models, stem measurements can be measured based on DBH, ultimately aiding the selection of stem management strategies for the growth of forests with greater commercial value.
Asunto(s)
Madera/economía , Meliaceae/crecimiento & desarrolloRESUMEN
Carcinoma basocelular sobre a região da tatuagem foi pouco descrito na literatura, com um total de 13 casos. Todos descrevem o aspecto clínico da lesão e sua patogênese, porém não caracterizam a dermatoscopia. Descrevemos dois casos de carcinoma basocelular na tatuagem, com características clínicas e dermatoscópicas, tratados com a cirurgia micrográfica de Mohs. Houve dificuldade em estabelecer as margens clínicas e dermatoscópicas do tumor em decorrência do pigmento exógeno da tatuagem
Basal cell carcinoma over the tattoo region has been poorly reported in the literature, with a total of 13 cases. All cases describe the clinical aspect of the lesion and its pathogenesis but do not characterize the dermoscopy. We report two cases of basal cell carcinoma on tattoos with clinical and dermoscopy features, treated with Mohs micrographic surgery. It was challenging to establish the tumor's clinical and dermoscopic margins due to the tattoo's exogenous pigment
RESUMEN
O isolamento absoluto é um procedimento indispensável no tratamento odontológico, principalmente em Endodontia. Contudo, certos profissionais ainda relutam em usá-lo. Objetivo: O presente estudo teve como objetivo entrevistar profissionais, acadêmicos de Odontologia e pacientes, visando avaliar a percepção de cada grupo com relação à eficácia e segurança do lençol de borracha, por meio do percentual de respostas dadas às perguntas. Métodos: Foram elaborados questionários a serem respondidos por 50 acadêmicos do último ano do curso de Odontologia da UNIPAR, 50 cirurgiões-dentistas e 100 pacientes de clínicas particulares e da clínica odondológica da UNIPAR da cidade de Umuarama, no Paraná. Após a coleta de todos os questionários distribuídos, as respostas apresentadas foram tabuladas e analisadas. Resultados: 66% dos odontólogos e 74% dos estudantes de Odontologia entrevistados relataram que sempre fazem o uso do isolamento absoluto, citando como pontos negativos da sua utilização o tempo para aplicação, a intolerância a ele por parte do paciente, e a falta de treinamento. Ainda, 52% dos pacientes de clínicas particulares e 54% dos pacientes da clínica odontológica da UNI- PAR consideraram o isolamento absoluto desconfortável; porém, apenas 6% e 10%, respectivamente, assinalaram que não gostariam que o isolamento absoluto fosse utilizado na próxima consulta. Conclusões: O isolamento absoluto tem uma grande aprovação pelos profissionais, acadêmicos e pacientes. Uma maioria significativa de cirurgiões-dentistas e acadêmicos de Odontologia tem em- pregado o isolamento absoluto rotineiramente na prática endodôntica. Os pacientes consideram o isolamento absoluto desconfortável; apesar disso, preferem que se faça uso dele durante o tratamento odontológico (AU).
Introduction: Rubber dam isolation is a mandatory procedure in dental treatment, especially in Endodontics. However, some professionals still refuse to employ it. Aim: This study interviewed dental professionals, dental students and patients, evaluating the perception of each group concerning the efficacy and safety of rubber dam by the percentage of responses to the questions. Methods: The questionnaires were responded by 50 students of the last year of Dentistry course at Unipar, 50 dental professionals and 100 patients from private clinics and the dental clinic of Unipar, at the city of Umuarama in Paraná. After collection of all submitted questionnaires, the responses were tabulated and analyzed. Results: 66% of dental professionals and 74% of dental students interviewed reported that they always use rubber dam isolation, mentioning as negative aspects for not using it the time required for placement, patient refusal and lack of training. Among the patients, 52% from private clinics and 54% from the dental clinic of Unipar considered the rubber dam uncomfortable, yet only 6% and 10%, respectively, indicated they would not like to use the rubber dam on the following session. Conclusions: Rubber dam isolation has great acceptance by professionals, students and patients. A significant part of dental professionals and students have been using the rubber dam routinely in the endodontic practice. The patients consider the rubber dam uncomfortable, notwithstanding they prefer to use it during dental treatment (AU).