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Connectivity processes and riparian vegetation of the upper Paraná River, Brazil

In fluvial systems, the relationship between a dominant variable (e.g. flood pulse) and its dependent ones (e.g. riparian vegetation) is called connectivity. This paper analyzes the connectivity elements and processes controlling riparian vegetation for a reach of the upper Paraná River (Brazil) and estimates the future changes in channel-vegetation relationship as a consequence of the managing of a large dam. The studied reach is situated 30km downstream from the Porto Primavera Dam (construction finished in 1999). Through aerial photography (1:25,000, 1996), RGB-CBERS satellite imagery and a previous field botany survey it was possible to elaborate a map with the five major morpho-vegetation units: 1) Tree-dominated natural levee, 2) Shrubby upper floodplain, 3) Shrub-herbaceous mid floodplain, 4) Grass-herbaceous lower floodplain and 5) Shrub-herbaceous flood runoff channel units. By use of a detailed topographic survey and statistical tools each morpho-vegetation type was analyzed according to its connectivity parameters (frequency, recurrence, permanence, seasonality, potamophase, limnophase and FCQ index) in the pre- and post-dam closure periods of the historical series. Data showed that most of the morpho-vegetation units were predicted to present changes in connectivity parameters values after dam closing and the new regime could affect, in different intensity, the river ecology and particularly the riparian vegetation. The methods used in this study can be useful for dam impact studies in other South American tropical rivers. © 2012 Elsevier Ltd.

Effects of magnesium sulphate on the pharmacodynamics of rocuronium in patients aged 60 years and older: A randomised trial

BACKGROUND There is little information on the interaction between magnesium sulphate (MgSO4) and rocuronium in elderly patients. With a growing number of older patients who need surgical procedures, it is increasingly important to study this age group. OBJECTIVE To evaluate the effects of MgSO4 administration on the pharmacodynamics of rocuronium in patients aged 60 years or older. DESIGN A randomised controlled trial. SETTING A tertiary care hospital. PATIENTS Sixty-four patients, aged 60 years or older, American Society of Anesthesiologists (ASA) physical status classes I to III, scheduled for elective oncological head and neck surgery. Exclusion criteria were severe renal insufficiency (calculated creatinine clearance <30 ml min-1), preoperatorive serum magnesium concentration of more than 1.25 mmol l1 and patients receiving drugs known to affect neuromuscular function. INTERVENTIONS Patients were randomly allocated to one of two groups: in the magnesium group, patients received MgSO4 30mgkg1 intravenously, for 10 min, and then a continuous intravenous infusion at a rate of 1 g h-1. The control group received the same volume of physiological saline. Neuromuscular function was evaluated continuously in both groups. MAIN OUTCOME MEASURES Total recovery time was the primary outcome. Onset time, clinical duration, recovery index and recovery time were considered as secondary endpoints. Values are given as mean [SD]. RESULTS Total recovery time from neuromuscular block (NMB) was 113 [36] min in the magnesium group and 101 [39] min in the control group. Clinical duration was 69 [23] min in the magnesium group and 59 [28] min in the control group. Recovery index was 19 [36] min in the magnesium group and 17 [6] min in the control group. Recovery timewas 44 [22] min in the magnesium group and 42 [18] min in the control group. There were no statistically significant differences between the groups in any of the recovery indices. In the magnesium group, the mean onset time was 144 [58] s, significantly shorter than the onset time in the group that received physiological saline, which was 187 [90] s (P-0.03). Group variances were compared using an F test: onset time varied significantly less in the magnesium group (P-0.02). CONCLUSION In oncology patients of 60 or more years of age, preadministration of MgSO4, with the doses used in this study, significantly reduced the onset time of NMB induced by rocuronium. © 2013 European Society of Anaesthesiology.

Avaliação da disponibilidade de boro em um latossolo de Mato Grosso/MT

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Seletividade de herbicidas aplicados em pré-emergência e associados à nematicidas, à cultura da cana-de-açúcar cultivar BR855113

Pós-graduação em Agronomia (Agricultura) - FCA

Determinação da taxa de infusão mínima de propofol e propofol associado a lidocaína em cães (Cannis familaris)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Avaliação quantitativa de micronúcleos na citologia esfoliativa da mucosa bucal de pacientes dependentes químicos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Morfometria da bacia hidrográfica do rio Bobo no Estado de Nariño, Colômbia

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação da capacitação de quimioprevenção de Eugenia jambolana em linhagem de hepatocarcinoma celular (HepG2 e Hepa 1c1c7)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Preditores de incorreçao na prescrição de antimicrobianos no Hospital Estadual Bauru (Bauru, São Paulo)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Nefrocalcinose induzida pela hiperoxalúria: modelo experimental em ratos

Pós-graduação em Bases Gerais da Cirurgia - FMB

Diagnóstico de ambiência na sub-bacia do Rio das Pedras, Municipio de Itatinga – SP, visando o planejamento sócio conservacionista

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Morfometria da microbacia hidrográfica do Ribeirão Faxinal Botucatu - SP e alterações em suas áreas de biomassa no período de 1972 a 2000

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Diagnóstico do sitema de prevenção e combate a incêndios florestais na Fazenda Monte Alegre em Agudos

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Avaliação da cultura do milho e da decomposição da palhada submetida à Hormesis

Pós-graduação em Agronomia (Energia na Agricultura) - FCA