Lime and gypsum applications.

bitstream/item/210620/1/Lime-and-Gypsum....pd

Phosphorus fertilizer placement and profitability.

bitstream/item/210618/1/Phosphorus-Fertilizer....pd

Micronutrient fertilization on a typic acrorthox at Manaus, Brazil.

bitstream/item/210629/1/Micronutrient-Fertilization-on....pd

Lime requirements and downward movement of Ca and Mg.

bitstream/item/210627/1/Lime-Requirements-and-Downward....pd

Nutrient dynamics.

bitstream/item/210617/1/Nutrient-Dynamics.pd

Multiple scattering effects in quasi free scattering from halo nuclei: a test to Distorted Wave Impulse Approximation

Full Faddeev-type calculations are performed for $^{11}$Be breakup on proton target at 38.4, 100, and 200 MeV/u incident energies. The convergence of the multiple scattering expansion is investigated. The results are compared with those of other frameworks like Distorted Wave Impulse Approximation that are based on an incomplete and truncated multiple scattering expansion.Comment: 7 pages, 16 figures, to be published in Phys. Rev.

Three-body description of direct nuclear reactions: Comparison with the continuum discretized coupled channels method

The continuum discretized coupled channels (CDCC) method is compared to the exact solution of the three-body Faddeev equations in momentum space. We present results for: i) elastic and breakup observables of d-12C at E_d=56 MeV, ii) elastic scattering of d-58Ni at E_d=80 MeV, and iii) elastic, breakup and transfer observables for 11Be+p at E_{11Be}/A=38.4 MeV. Our comparative studies show that, in the first two cases, the CDCC method is a good approximation to the full three-body Faddeev solution, but for the 11Be exotic nucleus, depending on the observable or the kinematic regime, it may miss out some of the dynamic three-body effects that appear through the explicit coupling to the transfer channel.Comment: 12 pages, 10 figures, accepted for publication in Physical Review

Caracterização química de compostos de lixo urbano de algumas usinas brasileiras.

Avaliacao das caracteristicas quimicas de compostos de lixo urbano e analise de esterco, calcario, superfosfato simples, KCl e ureia para comparacoes destes com o lixo urbano. Foram feitas determinacoes de M.O., C, N, P, K, Ca, Mg, Cu, Mn, Mo, Zn, Fe, Al, Ba, Cd, Co, Cr, Ni, Pb, Sr, Ti, e V. Houve diferencas nos teores de nutrientes entre os compostos, provavelmente devidas aos diferentes processo de compostagem, estando alguns deles acima dos niveis toleraveis em composto na Alemanha. Os demais elementos analisados, incuindo os metais pesados, estao dentro da faixa observada em lodo de esgotos na Inglaterra. De acordo com a legislacao alema, Pb, Cr, Ni e Cd estao acima dos valores toleraveis para compostos de lixo. Na maioria dos compostos analisados, os teores totais de nutrientes foram menores do que no esterco, mas a concentracao dos outros elementos, inluindo metais pesados, foi mais elevada do que no esterco. Embora os teores dos elementos avaliados nos compostaos seja os totais, e' necessario cautela para seu uso, ate que sejam obtidos resultados seguros sobre a "disponibilidade" desses elementos para as plantas

Checklist of the Benthic Marine Plants of the Madeira Archipelago.

Copyright © 2001 by Walter de Gruyter.A checklist of the benthic marine plants of the archipelago of Madeira is presented based on published information and personal observations. This list includes 1 Spermatophyte and 359 algal species, comprising 64 Chlorophycota, 64 Chromophycota and 231 Rhodophycota. Fifteen doubtful records for the area are also included

Airway obstruction produces widespread sympathoexcitation: role of hypoxia, carotid chemoreceptors, and NTS neurotransmission

Obstructive sleep apnea (OSA) is the most common respiratory disturbance of sleep and is closely associated to cardiovascular diseases. In humans, apnea increases respiratory effort and elevates muscle sympathetic nerve activity (SNA), but the primary stimulus for the SNA activation has not been identified. We recently developed a model of apnea in rodents using acute airway obstruction. In this study, we employed this model to test whether the elevation in SNA was mediated by hypoxia, carotid chemoreceptors, or neurotransmission in the nucleus tractus solitarius (NTS). In anesthetized, male Sprague-Dawley rats, airway obstruction (20s) increased phrenic nerve activity (PNA), arterial blood pressure (ABP), and lumbar, renal, and splanchnic SNA. The changes in SNA were similar across all three sympathetic nerves. Inactivation of chemoreceptors by hyperoxia (100% O-2) or surgical denervation of carotid chemoreceptors attenuated, but did not eliminate, the changes in SNA and ABP produced by airway obstruction. To interrupt afferent information from carotid chemoreceptor and extracarotid afferents to the hindbrain, airway obstruction was performed before and after NTS microinjection of the GABA(A) agonist muscimol or a cocktail of NMDA and non-NMDA antagonists. Inhibition of NTS neurons or blockade of glutamatergic receptors attenuated the increase in lumbar SNA, splanchnic SNA, renal SNA, and PNA. Collectively, these findings suggest that PNA and SNA responses induced by airway obstruction depend, in part, on chemoreceptors afferents and glutamatergic neurotransmission in the NTS.National Heart, Lung, and Blood Institute GrantAmerican Heart Association Established Investigator AwardCoordination of Training of Higher Education Graduate Foundation (CAPES)National Council for Scientific and Technological Development (CNPq)Univ Fed Sao Paulo, Dept Physiol, Sao Paulo, SP, BrazilUniv Pittsburgh, Sch Med, Dept Med, Div Renal Electrolyte, Pittsburgh, PA 15213 USAUniv Pittsburgh, Sch Med, Hypertens Ctr, Pittsburgh, PA USAUniv Fed Sao Paulo, Dept Physiol, Sao Paulo, SP, BrazilNational Heart, Lung, and Blood Institute Grant: R01 HL113270Web of Scienc