Seletividade de produtos utilizados no cultivo orgânico a Trichogramma pretiosum Riley (Hymenoptera: trichogramatidae).

O impacto de insumos para o controle de pragas no cultivo orgânico sobre inimigos naturais é ainda pouco conhecido. Assim sendo, avaliou-se, em condições de laboratório, a seletividade de produtos utilizados no cultivo da soja orgânica sobre pupas e adultos de Trichogramma pretiosum seguindo os protocolos padronizados da ?International Organization for Biological Control? (IOBC) para estudos de seletividade. O delineamento experimental utilizado foi inteiramente casualizado com 10 tratamentos e cinco repetições. Os tratamentos foram: testemunha negativa (água), testemunha positiva Lorsban® (0,8L/ha), Baculovirus anticarsia AEE® (140x109 cpi/ha), Dipel® (0,5L/ha), Neemseto® (4L/ha), Arrast® (4L/ha), Fish-Fértil® (3L/ha), Borda-Ferti® (1,8L/ha), Silicato de Na (4L/ha) e Calda sulfocálcica composta por enxofre e cal (1,8L/ha). Verificou-se que quando aplicados sobre pupas de T. pretiosum, os produtos testados são seletivos e não afetam a emergência dos parasitoides, exceto o inseticida Lorsban® que foi nocivo a todas as fases testadas. Porém, a partir do quinto dia de avaliação, os tratamentos Dipel® e Silicato de Na, reduziram o parasitismo de fêmeas emergidas e foram classificados como levemente nocivos (classe 2). Fish-Fértil®, em comparação a testemunha negativa, mostrou-se moderadamente nocivo (classe 3) ao parasitoide. No bioensaio com adultos de T. pretiosum, os produtos foram inócuos (classe 1) no primeiro dia de avaliação, entretanto, a partir do segundo dia, todos os produtos testados apresentaram efeitos negativos na porcentagem de parasitismo, sendo classificados como levemente nocivos (classe 2) (Baculovirus anticarsia AEE®, Fish-Fértil®, Borda-Ferti®, Calda sulfocálcica) e moderadamente nocivos (classe 3) (Dipel®, Neemseto®, Arrast®, Silicato de Na). Como os efeitos dos produtos sobre o parasitoide nesse trabalho levaram a classificação dos produtos como, em geral, classe 1 ou 2, a compatibilidade do uso desses produtos voltados para cultivos orgânicos e de T. pretiosum no manejo de pragas surge como uma estratégia viável no contexto de agricultura sustentável.SICONBIOL 2011

The current and future role of artificial intelligence in optimizing donor organ utilization and recipient outcomes in heart transplantation

Heart failure (HF) is a leading cause of morbidity and mortality in the United States. While medical management and mechanical circulatory support have undergone significant advancement in recent years, orthotopic heart transplantation (OHT) remains the most definitive therapy for refractory HF. OHT has seen steady improvement in patient survival and quality of life (QoL) since its inception, with one-year mortality now under 8%. However, a significant number of HF patients are unable to receive OHT due to scarcity of donor hearts. The United Network for Organ Sharing has recently revised its organ allocation criteria in an effort to provide more equitable access to OHT. Despite these changes, there are many potential donor hearts that are inevitably rejected. Arbitrary regulations from the centers for Medicare and Medicaid services and fear of repercussions if one-year mortality falls below established values has led to a current state of excessive risk aversion for which organs are accepted for OHT. Furthermore, non-standardized utilization of extended criteria donors and donation after circulatory death, exacerbate the organ shortage. Data-driven systems can improve donor-recipient matching, better predict patient QoL post-OHT, and decrease needless organ waste through more uniform application of acceptance criteria. Thus, we propose a data-driven future for OHT and a move to patient-centric and holistic transplantation care processes

Análise do Fluxo de Co2 sobre uma Cultura de Soja

Análise do fluxo de CO2 sobre uma cultura de soj

The Impact of Locality in the Broadcast Congested Clique Model

The broadcast congested clique model (BClique) is a message-passing model of distributed computation where n nodes communicate with each other in synchronous rounds. First, in this paper we prove that there is a one-round, deterministic algorithm that reconstructs the input graph G if the graph is d-degenerate, and rejects otherwise, using bandwidth b = \scrO (d \cdot log n). Then, we introduce a new parameter to the model. We study the situation where the nodes, initially, instead of knowing their immediate neighbors, know their neighborhood up to a fixed radius r. In this new framework, denoted BClique[r], we study the problem of detecting, in G, an induced cycle of length at most k (Cycle\leq k) and the problem of detecting an induced cycle of length at least k + 1 (Cycle>k). We give upper and lower bounds. We show that if each node is allowed to see up to distance r = \lfloor k/2\rfloor + 1, then a polylogarithmic bandwidth is sufficient for solving Cycle>k with only two rounds. Nevertheless, if nodes were allowed to see up to distance r = \lfloor k/3\rfloor , then any one-round algorithm that solves Cycle>k needs the bandwidth b to be at least \Omega (n/ log n). We also show the existence of a one-round, deterministic BClique algorithm that solves Cycle\leq k with bandwitdh b = \scrO (n 1/\lfloor k/2\rfloor \cdot log n). On the negative side, we prove that, if \epsilon \leq 1/3 and 0 < r \leq k/4, then any \epsilon -error, R-round, b-bandwidth algorithm in the BClique[r] model that solves problem Cycle\leq k satisfies R \cdot b = \Omega (n 1/\lfloor k/2\rfloor).Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 1170021 11190482 CONICYT + PAI + Convocatoria Nacional Subvencion a Instalacion en la Academia Convocatoria Ano 2017 PAI77170068 CONICYT via Basal in Applied Mathematic

Evaluation of Physiological Parameters of Broilers with Dorsal Cranial Myopathy

ABSTRACT There are several causes of carcass condemnation in poultry processing plants, including dorsal cranial myopathy (DCM), in which the anterior latissimus dorsi (ALD) muscle is affected. DCM etiology has not been elucidated yet, but this lesion impairs the visual quality of carcasses and causes economic losses due to downgrading and condemnation. The effects of this lesion on the systemic health of broilers are still unknown. In this context, the objective of this study was to evaluate muscle injury and systemic health indicators in broilers presenting or not DCM. The following parameters were evaluated: complete blood count (CBC), total protein, albumin, globulin, cholesterol, lactate, and glucose serum levels, aspartate aminotransferase (AST) and creatine kinase (CK) serum activities, and breast muscle pH. Blood samples were collected from 800 42-day-old broilers before feed withdrawal and transportation. In the processing plant, 28 carcasses presented DCM during inspection, and 28 carcasses with no DCM were used as controls. Blood biochemical parameters were not significantly different between broilers with DCM and the controls, except for AST and CK, which activities were higher in the DCM group than in the control group, suggesting that the DCM does not affect the systemic health of the broilers