87 research outputs found

    Atypical and Anaplastic Meningiomas: Diagnosis and Treatment

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    The aim of this chapter is to describe the usefulness of surgical technologies such as neuronavigation, intraoperative MRI, fluorescence-guided surgery and intraoperative monitoring as a tool do make neurosurgical procedures to brain tumors more safe and effective. The main topics to be explored are: history of the specific technique, indications and contra indications, description of the technique, real case examples, pros and cons. The focus on the discussion besides practical aspects is going to be relevant literature regarding impact of their use in avoidance of complications, improve in survival rates, cost-effectiveness, some tips and tricks acquired in the experience of our department

    Florescimento e frutificação de genótipos de pinhão manso sob doses de fósforo no cerrado da Região Sul do Tocantins

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    This work aimed to study the flowering and fruiting of physic nut genotypes at different doses of phosphorus at the Cerrado ecosystem at the South of the Tocantins State. The experiments were performed in a completely randomized block design, with five treatments and six replicates. The treatments consisted of five doses of phosphorus P2O5 (0 g, 50g, 100g, 150g e 200g per hole), where each  pant  consisted  of  an experimental  unit.  The  following characteristics were evaluated: total number of inflorescences or raceme, total number of flower buttons, total number of male flowers, total number of female flowers, total number of hermaphrodite flowers, total number of fruits, fraction of male and female flowers and flowering time. The evaluations were performed at two periods (8 a.m. and 5 p.m.). Results showed that genetic heterogeneity of the population prevented any statistical differences among the evaluated characteristics at the phosphorus doses used. However, the rate of 150 g/hole of P2O5 showed higher values for such evaluated characters. The fraction of male to female flowers was 18:1 and flowers opening were more frequent at the morning period. Physic nut plants present unisexual and hermaphrodite flowers.Este trabalho objetivou estudar o florescimento e a frutificação de genótipos de pinhão manso no ecossistema Cerrado no sul do estado do Tocantins, em diferentes doses de fósforo. O delineamento experimental utilizado foi o de blocos casualizados, com cinco tratamentos e seis repetições. Os tratamentos foram cinco doses de fósforo P2O5 (0 g, 50 g, 100 g, 150 g e 200 g por cova). Cada planta constituiu uma unidade experimental. As características avaliadas foram: número total de cachos ou inflorescências, número total de botões florais, número total de flores masculinas, número total de flores femininas, número total de flores hermafroditas, número total de frutos, relação de flores masculinas e femininas e dias para o florescimento da inflorescência. As avaliações foram realizadas em dois horários (8h e 17h). A heterogeneidade genética da população impediu a detecção de diferenças estatísticas entre as características avaliadas nas diferentes doses de fósforo. Em números absolutos, houve tendência de maiores valores para as características avaliadas na dose de 150 g/cova de P2O5. A abertura de flores na região Sul do Tocantins ocorre principalmente no período matutino. O pinhão manso apresenta flores monóicas, unissexuais e hermafroditas. &nbsp

    Formas e épocas de amostragem em folhas de pinhão manso para quantificação da área foliar

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    This work aimed to determine the ideal leaf size, and also in which position of the plant such measurements must be processed in Jatropha curcas. The experiment was carried out at the Federal University of Tocantins in a randomized complete block design with 24 treatments and 6 replicates. A method based on leaf length and leaf width was used to determine total leaf area. The results showed that total leaf area was underestimated when only small leaves were sampled. On the other hand, total leaf area was overestimated when only large leaves were sampled. It shows that the measurement of large and medium leaves at the upper and middle of the plant can be used to determine total leaf area. We therefore conclude that sampling forms is determined by the period of measurement; the fourth period of measurement is the most indicated to quantify the width of Jatropha curcas leaves; and to the measurement of total leaf area, the upper side of the plant was the best place of sampling.Este trabalho objetivou determinar o tamanho ideal de folhas e em que local da planta devem ser realizadas medições para a determinação da área foliar total de pinhão manso. O experimento foi conduzido na Universidade Federal do Tocantins em delineamento inteiramente casualizado, com 24 tratamentos e seis repetições. Para quantificar a área foliar utilizou-se o método baseado nas dimensões comprimento e largura das folhas. Os resultados mostraram que quando apenas folhas pequenas foram amostradas, a área foliar foi subestimada. Por outro lado, quando apenas folhas grandes foram amostradas, houve superestimação da área foliar. A mensuração de folhas grandes e médias no terço médio e superior da planta pode ser utilizada para a determinação da área foliar total. Assim, conclui-se que a forma de amostragem é influenciada pela época de mensuração; a quarta época de mensuração é a mais indicada para quantificar a largura das folhas de pinhão manso; e o terço superior da planta mostrou ser o melhor local de amostragem para quantificar a área foliar total

    Centrality Dependence Of The Pseudorapidity Density Distribution For Charged Particles In Pb-pb Collisions At √snn=2.76tev

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    7264/Mai61062

    Primary Intracranial Tumors

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    This book covers specific chapters with fundamental and current concepts about the main primary intracranial tumors, aimed at general neurosurgeons, neurologists, oncologists, radiotherapists, and residents. They are everyday situations from the subspecialist routine that can become challenging for professionals outside referenced centers or working alone
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