Interação de micorriza vesicular-arbuscular com leguminosas em solos ácidos.

Este trabalho apresenta uma abordagem para MVA e acidez do solo; Simbiose MVA ? Rhizobium-leguminosa; Dependência de MVA e Micorrizas e pesquisa na região amazônica.bitstream/item/60903/1/Doc55-micorrizaarbuscular.pd

Caracterização de sintomas de deficiências em cedro rosa (Cedrela odorata L.).

Este estudo teve por objetivo caracterizar os sintomas visuais de deficiência de macronutrientes e micronutrientes em mudas de cedro rosa.bitstream/item/24799/1/ct88-cedrorosa.pd

Crescimento de castanha-do-brasil em dois sistemas de cultivo.

O objetivo deste trabalho foi avaliar o crescimento da castanha-do-brasil em plantio consorciado e povoamento homogeneo em solo de baixa fertilidade.bitstream/item/67373/1/CPAF-RO-DOCUMENTOS-22-CRESCIMENTO-DE-CASTANHA-DO-PAU-BRASIL-EM-DOIS-SISTEMAS-DE-CULTIVO-FL-11385.pd

Spectromicroscopy of pulses transporting alkali metal in a surface reaction

The NO + H2 reaction on a potassium promoted Rh(110) surface is shown to sustain the formation of spatio-temporal periodic patterns leading to mass transport phenomena. The excitation of pulses and the mass transport mechanism are studied in the 10-7 and 10-6 mbar pressure range, with the potassium coverage varying between K = 0.05 and K = 0.12 ML. Using spectroscopic photoemission and spectroscopic low energy electron microscopy (SPELEEM) as well as related microprobe diffraction techniques, we show that the excitation mechanism comprises a cyclic structural transformation: K + O-coadsorbate → (2 × 1)-N → c(2 × 4)-2O,N → K + O coadsorbate. Laterally resolved spectroscopy demonstrates that potassium is accumulated in front of the nitrogen pulses, suggesting that adsorbed nitrogen acts as a diffusion barrier for potassium. © 2013 The Owner Societies

Playing the cards right: exploring the way leadership influences organizational citizenship behavior for the environment in megaprojects

Purpose: Organizational citizenship behaviors for the environment (OCBEs) represent a crucial element of environmental sustainability for a wide range of organizations. However, the leadership mechanisms underlying OCBEs are as yet unexplored, particularly regarding the delivering megaprojects. The paper aims to investigate how transformational leadership (TFL) and transactional leadership (TSL) styles shape the environmental commitment (EC) of subordinates, motivating OCBEs in megaprojects. Design/methodology/approach: Partial least squares modeling and hierarchical regression were performed on data obtained from 140 experts who have been involved in megaprojects. Findings: Both TFL and TSL styles are effective in motivating OCBEs, although the EC of subordinates partially mediates these relationships. The power distance (PD) orientation significantly moderates the relationship between TFL and OCBEs, with the relationship being more positive when the PD of subordinates is lower. Unexpectedly, a collectivist orientation (CO) was found to elevate the effect of TSL but weaken the effect of TFL. Originality/value: The mixed and contradictory findings regarding TFL and TSL styles are reconciled in the current study by integrating the contextual factors of PD and CO. The findings of the study shed new light on “playing the cards right” when using the leadership practices, i.e. how leadership can be better leveraged to cultivate subordinates' OCBEs. They also provide targeted guidance for shaping contextual factors to increase the environmental sustainability of megaprojects

Delayed transfer of immune cells or the art of donor lymphocyte infusion

In the context of an allogeneic HSCT, the interplay between host and donor immune cells is considered to be the primary mechanism responsible for graft-versus-leukemia (GVL) reactivity and also able to mediate GVH