Paraclinoid Aneurysms-Management Update OLIVEIRA, Evandro de; TEDESCHI, Helder; RHOTON, Albert L.
Nousotchuu no geka/Nōsotchū no geka,
1997, Letnik:
25, Številka:
2
Journal Article
Odprti dostop
Microsurgery of aneurysms that arise in the paraclinoid region remains a formidable challenge to most neurosurgeons. The intricate anatomy related to the internal carotid artery at the site where it ...leaves the base of the skull to enter the subarachnoid space is responsible for most of the drawbacks of aneurysm surgery in that area. The planning of the operative strategy requires that one considers some major issues involved with the management of paraclinoid aneurysms, i.e., those related to the anatomical relationships of the paraclinoid area, the characteristics of the aneurysm itself, the choice of the best surgical approach, the site for proximal control of arterial bleeding, and the possibilities for either the improvement or for the arrest of visual deterioration.
To describe a histologically well-documented adult case of a giant supratentorial enterogenous cyst (EC). Fewer than 15 cases of supratentorial ECs are on record: 8 associated with the brain ...hemispheres or the overlying meninges, 4 with the sellar region, and 2 with the optic nerve.
A 31-year-old woman complained of long-standing mild left brachial and crural motor deficit precipitated by headache and signs of intracranial hypertension. Magnetic resonance imaging revealed a huge cyst overlying the frontoparietal brain.
Symptoms were relieved by evacuation of the cyst content by means of a Rickam's reservoir, and the lesion was subsequently removed in toto. Histological and immunohistochemical examination of the cyst wall clearly established the enterogenous nature of its epithelium. Follow-up for up to 2 years after intervention showed no sign of recurrence, and symptoms, including treatment-resistant seizures in the postoperative period, have entirely subsided.
Supratentorial ECs, distinctly rare in adult patients, may in some cases present as giant lesions. Total removal seems to be curative once careful examination has eliminated the possibility of a metastasis from an unknown primary. A correct histological diagnosis is important because, in contrast to other benign cysts of similar location and size, ECs may be prone to intraoperative dissemination.
A técnica da covariância dos vórtices turbulentos foi usada paradeterminar os fluxos de calor latente e de calor sensível, na fase vegetativada cultura. Os resultados observados mostraram que os ...fluxos de calorsensível foram superiores aos fluxos de calor latente, possivelmente devidoas condições de deficiência hídrica predominantes durante todo o ciclo dacultura. O coeficiente de determinação encontrado entre a soma dos fluxosde calor latente e calor sensível com o saldo de radiação, indicaram umbom fechamento do balanço de energia.
O presente trabalho teve como objetivo avaliar o desempenho domodelo de Bruin-Holtslag em estimar os componentes do balanço energiapara o feijão caupi em condições de sequeiro, localizado no sítio ...experimentalna fazenda Amaniteua, na cidade de Tracuateua, PA. Os fluxos deenergia foram medidos usando a técnica de covariância dos vórtices turbulentos.Por meio das análises realizadas nas simulações, observou-se que omodelo estimou satisfatoriamente o fluxo de calor sensível e latente para acultura do caupi.
A candidíase apresenta-se como uma infecção fúngica superficial ou profunda causada por leveduras pertencentes ao gênero Candida, sendo considerada a principal infecção micótica em ambiente ...nosocomial. O objetivo do presente estudo foi determinar a concentração inibitória mínima - CIM do óleo essencial de Cinnamomum zeylanicum Blume, Citrus limon Risso, Eucalyptus citriodora HK, Eugenia uniflora L., Peumus boldus Benth e de Rosmarinus officinialis L. sobre cepas de Candida albicans, C. guilliermondii, C. krusei, C. parapsilosis, C. stellatoidea e C. tropicalis. Os ensaios de atividade antifúngica foram realizados através da técnica de difusão em meio sólido. Os óleos essenciais de C. zeylanicum e P. boldus mostraram os mais destacáveis resultados, visto que inibiram o crescimento de 58% das cepas ensaiadas e apresentaram CIM de 4%.
The aim of this study was to evaluate the CROPGRO-Dry bean model for simulating dry bean yield. The model’s genetic coefficients were calibrated based on the cultivars ‘Pérola’, ‘Ouro Negro’ and ...‘Ouro Vermelho’ in Viçosa, State of Minas Gerais, Brazil. The coefficients were adjusted based on two experiments that were performed in 2003 with irrigated and nonirrigated water regimes. An additional experiment with irrigation was conducted in 2004. After calibration, the model simulated the bean yield for the period from 1975 through 2006. The simulations were based on daily data on maximum and minimum air temperatures, total precipitation and global solar radiation. The physical and hydric characteristics of the soil and crop management practices were also included. The results show that the crop model can correctly reproduce the observed yield. This finding may indicate that the model is a useful tool to evaluate the crop response to variability and changing climate.O presente trabalho teve como objetivo avaliar o modelo CROPGRO-Dry bean como ferramenta de previsão de rendimento de feijão (Phaseolus vulgaris L.), tendo como base as cultivares ‘Pérola’, ‘Ouro Negro’ e ‘Ouro Vermelho’, cultivados em Viçosa, Estado de Minas Gerais. O ajuste dos coeficientes genéticos do modelo foi obtido a partir de dois experimentos realizados em 2003, um conduzido com irrigação e outro em condições de sequeiro. Além destes, outro experimento foi conduzido em 2004, com irrigação. Após o ajuste dos coeficientes, realizou-se a simulação do rendimento do feijoeiro com base em dados de 31 safras entre o período de 1975 a 2006. As simulações foram baseadas em dados meteorológicos diários de temperaturas máxima e mínima do ar, precipitação pluvial e radiação solar global, características físico-hídricas do solo e dados de manejo da cultura. Por meio das análises realizadas nas simulações, verificou-se que o modelo mostrou-se viável como ferramenta para a previsão de rendimento do feijão, obtendo-se estimativa adequada de rendimento com 30 dias de antecedência da colheita.
The performance of the CROPGRO model for bean de Oliveira, Evandro Chaves; da Costa, Jose Maria Nogueira; de Paula, Jr., Trazilbo Jose ...
Acta scientiarum. Agronomy,
07/2012, Letnik:
34, Številka:
3
Journal Article
Recenzirano
The aim of this study was to evaluate the CROPGRO-Dry bean model for simulating dry bean yield. The model's genetic coefficients were calibrated based on the cultivars 'Perola', 'Ouro Negro' and ...'Ouro Vermelho' in Vicosa, State of Minas Gerais, Brazil. The coefficients were adjusted based on two experiments that were performed in 2003 with irrigated and nonirrigated water regimes. An additional experiment with irrigation was conducted in 2004. After calibration, the model simulated the bean yield for the period from 1975 through 2006. The simulations were based on daily data on maximum and minimum air temperatures, total precipitation and global solar radiation. The physical and hydric characteristics of the soil and crop management practices were also included. The results show that the crop model can correctly reproduce the observed yield. This finding may indicate that the model is a useful tool to evaluate the crop response to variability and changing climate. Keywords: computer simulation, DSSAT, cultivars, Phaseolus vulgaris, yield, forecast date. O presente trabalho teve como objetivo avaliar o modelo CROPGRO-Dry bean como ferramenta de previsao de rendimento de feijao (Phaseolus vulgaris L.), tendo como base as cultivares 'Perola', 'Ouro Negro' e 'Ouro Vermelho', cultivados em Vicosa, Estado de Minas Gerais. O ajuste dos coeficientes geneticos do modelo foi obtido a partir de dois experimentos realizados em 2003, um conduzido com irrigacao e outro em condicoes de sequeiro. Alem destes, outro experimento foi conduzido em 2004, com irrigacao. Apos o ajuste dos coeficientes, realizou-se a simulacao do rendimento do feijoeiro com base em dados de 31 safras entre o periodo de 1975 a 2006. As simulacoes foram baseadas em dados meteorologicos diarios de temperaturas maxima e minima do ar, precipitacao pluvial e radiacao solar global, caracteristicas fisico-hidricas do solo e dados de manejo da cultura. Por meio das analises realizadas nas simulacoes, verificou-se que o modelo mostrou-se viavel como ferramenta para a previsao de rendimento do feijao, obtendo-se estimativa adequada de rendimento com 30 dias de antecedencia da colheita. Palavras-chave: simulacao por computador, DSSAT, cultivares, Phaseolus vulgaris, produtividade, previsao de safra.
Surgical treatment of cavernomas arising in the insula is especially challenging because of the proximity to the internal capsule and lenticulostriate arteries. We present our technique of image ...guidance for operations on insular cavernomas and assess its clinical usefulness.
Between 1997 and 2003, with the guidance of a frameless stereotactic system (BrainLab AG, Munich, Germany), we operated on eight patients who harbored an insular cavernoma. Neuronavigation was used for 1) accurate planning of the craniotomy, 2) identification of the distal sylvian fissure, and, finally, 3) finding the exact site for insular corticotomy. Postoperative clinical and neuroradiological evaluations were performed in each patient.
The navigation system worked properly in all eight neurosurgical patients. Exact planning of the approach and determination of the ideal trajectory of dissection toward the cavernoma was possible in every patient. All cavernomas were readily identified and completely removed by use of microsurgical techniques. No surgical complications occurred, and the postoperative course was uneventful in all patients.
Image guidance during surgery for insular cavernomas provides high accuracy for lesion targeting and permits excellent anatomic orientation. Accordingly, safe exposure can be obtained because of a tailored dissection of the sylvian fissure and minimal insular corticotomy.
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