Nivaldo Schultz

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In Brazil N fertilization of sugarcane (Saccharum spp.) is low compared to most other countries. 15N-aided studies and the occurrence of many N2-fixing bacteria associated with cane plants suggest significant contributions from biological N2 fixation (BNF). The objective of this study was to evaluate BNF contributions to nine cane varieties under field(More)
485 about the abundance of the Ni isotopes which are not very well known. The assumption of a larger radius ro would produce smaller values of $ " and would give rise to a definite tendency to increase with higher energies. This would be in disagreement with our knowledge about sticking probabilities, insofar as we are allowed to apply evidence taken from(More)
It is argued that a child with intellectual disability represents an ongoing source of loss and grief for parents. A developmental framework was employed to compare three age cohorts of parents. Grief was operationalized within the affective, behavioural and cognitive domains. Measures of intrusive thoughts, avoidance behaviours, current emotional distress(More)
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