Raças de Blumeria graminis f. sp. tritici (oídio de trigo) no Brasil, de 1995 a 1997.

Este trabalho relata resultados de levantamento de raças de Blumeria graminis f. sp. tritici, agente causal do oídio de trigo, no Brasil, de 1995 a 1997. Foram identificadas 67 raças. A raça BOT12 apresentou a maior freqüência de ocorrência, tendo sido observada em 1995 e 1996 no Rio Grande do Sul, no Paraná, no Distrito Federal e em Mato Grosso do Sul. A raça BOT17 ocorreu nos três anos. A maioria das raças foi virulenta para os genes Pm 3a, 3c, 8, 1+..., 2+6 e 01. Permaneceram efetivos para resistência a todas as raças os genes Pm 2 e 4a+...

CALCIFILAXIA URÉMICA SOB O EFEITO DO CALCIMIMÉTICO CINACALCET

Uremic calciphylaxis is a rare but serious complication of dialysis patients. Its pathogenesis is not completely understood, although many risk factors have been identified, such as hyperparathyroidism. Cinacalcet (a calcimimetic agent) is used to keep calcium, phosphorus and PTH within the normal range. A 72-year old female patient, under hemodialysis for 15 years with hyperphosphatemia, normocalcemia and hyperparathyroidism despite therapy with cinacalcet and sevelamer, presented with several painful ulcerated lesions of the right leg, with a geographical configuration, central necrotic surface and hemorrhagic borders that progressed for 6 weeks. Cutaneous biopsy revealed vascular deposits of calcium in deep dermal and hypodermal vessels, confirming the clinical diagnosis of calciphylaxis. The necrotic borders of the ulcer improved when cinacalcet and sevelamer were administered in maximum doses. However, the patient passed away in consequence of comorbidities. We report a case in which cinacalcet was ineffective in controlling the phosphate and calcium abnormalities in an hemodialysis patient and, consequently, his cutaneous lesions.A calcifilaxia urémica é uma complicação rara mas grave dos doentes dialisados. A patogenia não está claramente estabelecida, sendo os principais factores de risco o hiperparatiroidismo e a consequente elevação do produto fosfo-cálcico. Uma doente do sexo feminino de 72 anos de idade, sob hemodiálise há 15 anos, com hiperfosfatémia, normocalcémia e hiperparatiroidismo grave apesar da terapêutica com cinacalcet e sevelâmero, foi observada com lesões ulceradas dolorosas, de configuração geográfica, superfície necrótica central e bordos hemorrágicos na perna direita com 6 semanas de evolução. A biópsia cutânea revelou deposição de cálcio na parede de múltiplos vasos da derme profunda e hipoderme, confirmando a hipótese clínica evocada de calcifilaxia. Com o aumento das doses do cinacalcet e sevelâmero houve melhoria discreta das lesões ulceradas. Porém, a doente faleceu devido a múltiplas co-morbilidades. Relata-se um caso de ineficácia do cinacalcet no controlo dos parâmetros laboratoriais e nas consequentes lesões cutâneas

Percepção de agricultores familiares sobre qualidade de vida.

Resumo: Objetivou-se com esse trabalho refletir sobre a qualidade de vida de um grupo de agricultores familiares. Assim a abordagem foi qualitativa e o ambiente natural como Fonte direta para coleta de dados para aprofundar a realidade específica por meio da observação direta das ati-vidades do grupo. Organização social, meio ambiente, alimentação, cuidados corporais e es-tética, foram questões evocadas pelos agricultores familiares sobre percepções de qualidade de vida. Apesar da percepção teórica de qualidade de vida, os agricultores têm necessidade de fortalecer na prática hábitos restritos ao Contexto local de direitos a acessar. [Perception of family farmers on quality of life]. Abstract: The objective of this work was to reflect on the quality of life of a group of family farmers. Thus the approach was qualitative and the natural environment as a direct source for data collection to deepen the specific reality through the direct observation of the group activities. Social orga-nization, environment, food, body care and aesthetics were questions raised by family farmers about perceptions of quality of life. Despite the theoretical perception of quality of life, farmers need to strengthen in practice habits restricted to the local context of rights to access.Edição dos anais do VI Congresso Latino-Americano (CLAA), Congresso Brasileiro De Agroecologia (CBA), 10 e V Seminário de Agroecologia do Distrito Federal e Entorno (SEMDF), 12-15 set. 2017, Brasília, DF

Fuzzy Wavelet Neural Network Using a Correntropy Criterion for Nonlinear System Identification

Recent researches have demonstrated that the Fuzzy Wavelet Neural Networks (FWNNs) are an efficient tool to identify nonlinear systems. In these structures, features related to fuzzy logic, wavelet functions, and neural networks are combined in an architecture similar to the Adaptive Neurofuzzy Inference Systems (ANFIS). In practical applications, the experimental data set used in the identification task often contains unknown noise and outliers, which decrease the FWNN model reliability. In order to reduce the negative effects of these erroneous measurements, this work proposes the direct use of a similarity measure based on information theory in the FWNN learning procedure. The Mean Squared Error (MSE) cost function is replaced by the Maximum Correntropy Criterion (MCC) in the traditional error backpropagation (BP) algorithm. The input-output maps of a real nonlinear system studied in this work are identified from an experimental data set corrupted by different outliers rates and additive white Gaussian noise. The results demonstrate the advantages of the proposed cost function using the MCC as compared to the MSE. This work also investigates the influence of the kernel size on the performance of the MCC in the BP algorithm, since it is the only free parameter of correntropy

Processamento de leite caprino fermentado probiótico com suco de uva.

Dscreve o processo de produção de leite caprino fermentado com bactérias probióticas e suco de uva desenvolvido em pesquisa que envolveu a Embrapa Caprinos e Ovinos, a Embrapa Agroindústria de Alimentos e a Embrapa Uva e Vinhobitstream/item/105820/1/COT-137.pd

Frequency of Chlamydia trachomatis infection in cervical intraepithelial lesions and the status of cytological p16/Ki-67 dual-staining

Background: Chlamydia trachomatis (Ct) is not a disease subject to mandatory reporting in Brazil, and the prevalence rate of this genital infection varies according to the region in which studies are conducted, as well as by the detection technique employed. Ct has been associated with persistence of Human papillomavirus (HPV) infection and the facilitation of cervical carcinoma development. We evaluated the Chlamydia trachomatis infection and its association with cytology, p16/Ki-67 dual-stained cytology and cervical intraepithelial lesions status in a screening cohort in Brazil. Methods: This was a cross-sectional study of 1481 cervical samples from asymptomatic women aged 18 to 64. Samples were collected for liquid-based cytology and Ct detection by polymerase chain reaction. p16/Ki-67 double staining was performed on samples with abnormal cytology. Statistical analysis was by chi-square and likelihood-ratio tests. Odds ratio (OR) and 95% confidence intervals (95% CI) were determined. Results: The frequency of Ct was 15.6% and its presence was not associated with detection of p16/Ki-67 [OR = 1. 35 (0.5-3.4)]. There was also no association between abnormal cervical cytology and Ct-positivity [OR = 1.21 (0.46-3.2)]. Associations were observed between p16/Ki-67 and high-grade lesions detected by cytology and in biopsies [OR = 3.55 (1.50-8.42) and OR = 19.00 (0.6-7.2), respectively]. Conclusions: The asymptomatic women in our study had a high frequency of Ct infection but this was not associated with p16/Ki-67 detection in samples with abnormal cytology. The expression of p16/Ki-67 was highest in women with high-grade CIN (p = 0.003).info:eu-repo/semantics/publishedVersio