A rare case of solitary fibrous tumor of the temporal region: 7-year-follow-up clinical-radiographic evaluation and literature review

Solitary fibrous tumor is a rare spindle-cell neoplasm of mesenchymal origin. In head and neck region, the tumors present slow-growing masses, often with local compressive symptoms. Although it is generally benign, malignant variants have been identified. The radiological diagnosis of solitary fibrous tumor is usually based on computer tomography and/or magnetic resonance imaging. Microscopically, a solitary fibrous tumor is characteristically a circumscribed neoplasm composed of variably cellular and patternless distributions of bland spindle and ovoid cells within variably collagenous stroma that frequently shows areas of dense hyalinisation, as well as interspersed large branching or “staghorn”- shaped thin-walled vessels. Immunohistochemical staining is very effective to distinguish solitary fibrous tumors from other fibroblastic tumors. Recently, NAB2–STAT6 gene fusion derived from inv12 (q13q13) has been reported as the genetic hallmark of solitary fibrous tumor. Complete local surgical excision appears to be the treatment of choice for solitary fibrous tumor of the head and neck region. Recurrence was reported in 5% of cases. The median recurrence-free interval was 36.5 months. We report the case of a solitary fibrous tumor of the temporal region, surgically excised and with no clinical and/or radiological signs of recurrence after 7 years of follow-up

Produção de capim-elefante em vertissolo sob diferentes doses de efluentes de fossa séptica biodigestora.

Objetivou-se com a execução deste trabalho avaliar a produção de capim-elefante (Pennisetum purpureum Schumach cv. Botucatu) em Vertissolo sob diferentes doses de efluentes produzidos em fossa séptica biodigestora instalada em região de águas salobras. O experimento foi conduzido em casa de vegetação na Embrapa Pantanal, situada em Corumbá, Mato Grosso do Sul, entre agosto de 2009 e março de 2010. Foi avaliado o efeito de quatro doses de efluentes e duas épocas de corte sobre as produções de matéria seca de folhas (F), de hastes (H) e total (F+H), a participação dessas frações na massa seca total (F% e H%) e a relação F/H. A fertirrigação realizada com o efluente líquido da fossa séptica biodigestora resultou em maior produção de matéria seca do capim-elefante nas duas épocas avaliadas. Todavia, os resultados indicam que o uso contínuo das duas maiores doses de efluentes resultam em menor desenvolvimento de folhas em relação às hastes, o que é indesejável, pois pode reduzir o valor nutritivo da planta para uso como forrageira.Disponível também em: Cadernos de Agroecologia, V. 5, n.1, 2010

The Effects Of Cyclosporin A And Heteropterys Tomentosa On The Rat Liver.

Cyclosporin A (CsA) is a widely employed immunosuppressive drug that is associated with several side effects, among then hepatotoxicity. Heteropterys tomentosa is a Brazilian plant efficient in reducing damage caused by CsA on the rat testis and prostate. The aim of this study was to evaluate the effect of CsA and H. tomentosa (administered isolated or simultaneously) on the liver of Wistar rats. The animals were treated daily with water (control), CsA (15mg/kg/day), H. tomentosa infusion or CsA+H. tomentosa, for 21 or 56 days. The treatments did not alter liver morphology or cause fibrosis. H. tomentosa administered for 21 days increased the number of hepatocyte nuclei and Kupffer cell volumetric proportion. After 56 days of treatment, H. tomentosa administration did not alter the parameters analyzed. Biochemical plasma dosages and liver stereology showed impairment caused by CsA-treatment after 21 days; these results were not observed after 56 days of treatment. The simultaneous treatment with CsA and H. tomentosa for 21 or 56 days did not alleviate nor accentuate CsA hepatic effects. The present study showed that the 21 days treatment with CsA caused more alteration to the liver than the 56 days treatment; this could be related to hepatic recovery after the long term treatment.87369-7

The effects of cyclosporin a and heteropterys tomentosa on the rat liver

Cyclosporin A (CsA) is a widely employed immunosuppressive drug that is associated with several side effects, among then hepatotoxicity. Heteropterys tomentosa is a Brazilian plant efficient in reducing damage caused by CsA on the rat testis and prostate. The aim of this study was to evaluate the effect of CsA and H. tomentosa (administered isolated or simultaneously) on the liver of Wistar rats. The animals were treated daily with water (control), CsA (15mg/kg/day), H. tomentosa infusion or CsA+H. tomentosa, for 21 or 56 days. The treatments did not alter liver morphology or cause fibrosis. H. tomentosa administered for 21 days increased the number of hepatocyte nuclei and Kupffer cell volumetric proportion. After 56 days of treatment, H. tomentosa administration did not alter the parameters analyzed. Biochemical plasma dosages and liver stereology showed impairment caused by CsA-treatment after 21 days; these results were not observed after 56 days of treatment. The simultaneous treatment with CsA and H. tomentosa for 21 or 56 days did not alleviate nor accentuate CsA hepatic effects. The present study showed that the 21 days treatment with CsA caused more alteration to the liver than the 56 days treatment; this could be related to hepatic recovery after the long term treatment871369379FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP2011/01160-

Produção de capim-elefante sob diferentes doses de efluentes de fossa séptica biodigestora em região de águas salobras.

Objetivou-se com o presente trabalho avaliar a produção de capim elefante (Penisetum purpureaum Schumach cv. Botucatu) sob diferentes doses de efluentes Produzidos em fossa séptica biodigestora instalada em região de águas salobras. O experimento foi conduzido em casa de vegetação na Embrapa Pantanal, situada em Corumbá, Mato Grosso do Sul, entre agosto de 2009 e março de 2010. Foi avaliado o efeito de quatro doses de efluentes e duas épocas de corte sob as produções de matéria seca a 105oC (MS) de folhas (F), de hastes (H) e total (F+H), a participação da fração folha na massa seca total (F%) e a relação F/H. A aplicação de doses crescentes de efluentes da fossa séptica biodigestora instalada em região de águas salobras resultou em maior produção do capim-elefante nas duas épocas avaliadas e favoreceu, no primeiro período de avaliação, maior participação da fração folha das plantas, fato que indica efeito positivo do uso deste tipo efluente sobre o valor nutritivo da forrageira cultivada na região

Characteristics of Different Systems for the Solar Drying of Crops

Solar dryers are used to enable the preservation of agricultural crops, food processing industries for dehydration of fruits and vegetables, fish and meat drying, dairy industries for production of milk powder, seasoning of wood and timber, textile industries for drying of textile materials. The fundamental concepts and contexts of their use to dry crops is discussed in the chapter. It is shown that solar drying is the outcome of complex interactions particular between the intensity and duration of solar energy, the prevailing ambient relative humidity and temperature, the characteristics of the particular crop and its pre-preparation and the design and operation of the solar dryer

Entrepreneurial growth and ownership under market socialism in China: a longitudinal case study of small business growth

How firms grow is still a mystery and a definitive explanation remains elusive. This is especially the case for emerging economies, where the development of research into business growth has been notably slow whilst emerging business ventures are developing at hyper speed. Since most empirical studies have focused on the quantitative differences in growth across firms, this paper adopts a longitudinal case study approach to explore the qualitative differences in terms of how various types of firm achieve their growth outcomes in the organisational development process over a prolonged period of time. Through a theoretical lens which focuses on growth process approaches, this study not only demonstrates that entrepreneurial processes take different forms and dimensions in different contexts, but it also provides insights into the interactions of various organisational factors underpinning the strategies and changes that lead to contrasting growth outcomes. Case study findings assert that the ownership factor is a key contingent factor that shapes management structure and resources which, in turn, affect particular entrepreneurial outcomes. Furthermore, a combination of leadership style and the approach to knowledge management also play critical roles in the learning process which, tends to determine the strategy choice of either high or low value added product strategy. The findings of this research are that small firms with a low value product strategy can improve their survival chances and growth through the vertical broadening of a product portfolio in synchrony with increasing production and technology advancement. The case study companies show a tendency to reinforce their industry position by adopting contrasting choices for growth. The paper addresses the challenges and managerial implications for Western company managers in different growth contexts