Armadilha para monitoramento de insetos.

bitstream/CNPMA/5817/1/armadilha_insetos.pd

Seleção de clones de copa de seringueira resistentes ao mal das folhas.

A fim de selecionar novos materiais genéticos para novos cultivos o trabalho teve por objetivos estimar os parâmetros genéticos de clones de copas de seringueira resistentes ao M. ulei nas condições edafoclimáticas da Amazônia Tropical Úmida, durante seis anos de produção em análise conjunta

Epstein-Barr virus encephalitis presenting with brain mass lesions in a patient with human immunodeficiency virus infection

Epstein-Barr virus (EBV) disease of central nervous system (CNS) in human immunodeficiency virus (HIV) patients is mostly associated with primary CNS lymphoma (PCNSL). In patients who cannot undergo biopsy and have typical clinical and radiographic findings, detection of EBV deoxyribonucleic acid in CSF may provide enough evidence to start treatment for PCNSL. Here, we described a case of EBV encephalitis presenting with fever, memory, and psycho-motor deficits in a patient with HIV infection and severe immunosuppression who started antiretroviral therapy (ART) one month earlier. Brain magnetic resonance imaging showed periventricular lesions with nodular enhancing pattern and restricted diffusion, and CSF was positive for EBV. Brain biopsy revealed inflammatory lesions and lymphoid infiltrate without signs of malignancy. After three months of ART, patient improved significantly and MRI showed a marked reduction of lesions. Two years later, patient’s condition remains stable. PCNSL is the leading diagnosis in HIV patients with CNS mass lesions and positive CSF for EBV. In the case described, starting treatment for PCNSL could have been considered if the patient could not undergo biopsy, or if there was no improvement under ART. However, EBV encephalitis can be a differential diagnosis in patients with compatible histopathology and clinical course. © 2023 Termedia Publishing House Ltd.. All rights reserved

Variabilidade genética de isolados de Armillaria sp. da região sul do Brasil.

Resumo

Thermostatistics of overdamped motion of interacting particles

We show through a nonlinear Fokker-Planck formalism, and confirm by molecular dynamics simulations, that the overdamped motion of interacting particles at T=0, where T is the temperature of a thermal bath connected to the system, can be directly associated with Tsallis thermostatistics. For sufficiently high values of T, the distribution of particles becomes Gaussian, so that the classical Boltzmann-Gibbs behavior is recovered. For intermediate temperatures of the thermal bath, the system displays a mixed behavior that follows a novel type of thermostatistics, where the entropy is given by a linear combination of Tsallis and Boltzmann-Gibbs entropies.Comment: 4 pages, 2 figure

Efeito residual da adubação com rochas brasileiras como fontes de potássio para a cultura da soja.

RESUMO: O trabalho foi desenvolvido em vasos, em casa-de-vegetação, para avaliar o efeito residual da adubação potássica com rochas moídas sobre o desenvolvimento vegetativo e o acúmulo de potássio (K) por plantas de soja em Latossolo Vermelho distroférrico (LVdf) e Neossolo Quartzarênico (NQ), anteriormente cultivados com girassol. As rochas fontes de potássio, arenito vulcânico, brecha alcalina, carbonatito, biotita xisto e ultramáfica alcalina, além da fonte padrão de K, cloreto de potássio, foram aplicadas nas quantidades de 0, 150 e 300 mg kg-1 de K2O por ocasião da semeadura do girassol. Avaliou-se a produção de matéria seca da parte aérea das plantas colhidas no florescimento pleno, além das concentrações e o acúmulo de K nos tecidos. Também avaliou-se, ao final do cultivo, o K disponível no solo pelo extrator Mehlich-1. Tanto a produção quanto o acúmulo de K foram influenciados pelas fontes de potássio utilizadas. As rochas ultramáfica alcalina e biotita xisto apresentaram as maiores eficiências agronômicas residuais para a produção de matéria seca e como fonte de liberação lenta de K. O carbonatito apresentou viabilidade de utilização como fonte de K, porém com solubilidade mais lenta que a ultramáfica alcalina e a biotita xisto. O arenito vulcânico não apresentou viabilidade agronômica como fonte de K. O extrator Mehlich-1 não se mostrou adequado para avaliar a disponibilidade de K em solos adubados com a brecha alcalina. ABSTRACT: A pot experiment was carried out in greenhouse conditions, to evaluate long-term effects of Brazilian rocks as alternative potassium source to soybean BRS 232 in a Rhodic Hapludox and an Ustoxic Quartzipsamment, previously cultivated with sunflower. Treatments were displayed in a factorial scheme (soils x sources x rates), in a completely randomized blocks design with four replications. The rocks volcanic sandstone, alkaline breccia, carbonatite, biotite schist, alkaline ultramaphic, and potassium chloride, as the standard fertilizer source, were applied in rates of 0, 150 e 300 mg kg-1 of K2O, previously the first crop sowing. At the full bloom stage, yield of shoot dry matter, concentration and accumulation of potassium in plant tissues, besides levels of available K (Mehlich-1) in soil were evaluated. Both yield and potassium accumulation were affected by potassium sources. Alkaline ultramaphic and biotite schist rocks got the highest long-term efficiencies as slow release potassium source and to dry matter yield of soybean. Carbonatite presented slower solubility than the better sources; however it can be used as slow release potassium source. Volcanic sandstone was not a viable potassium source. Mehlich-1 extractor was not suitable to measure available K in soils fertilized with alkaline breccia

Eficiência de inseticidas no controle de Tripes em mangueira e efeito sobre inimigos naturais.

O objetivo deste trabalho foi verificar a eficiência e a seletividade sobre os inimigos naturais, de seis inseticidas, no controle de tripes em mangueira

Efficiency of terbufos and carbofuran on the control of banana weevil borer Cosmopolites sordidus.

The trial was conducted under field conditions, in an irrigated area of Petrolina municipality, Pernambuco State, Brazil