983 resultados para Scale 1:3,000,000None
Resumo:
N-methylpyrrolidone is a powerful solvent for variety of chemical processes due to its vast chemical properties. It has been used in manufacturing processes of polymers, detergents, pharmaceuticals rubber and many more chemical substances. However, it creates large amount of residue in some of these processes which has to be dealt with. Many well known methods such as BASF in rubber producing units have tried to regenerate the solvent at the end of each run, however, there is still discarding of large amount of residue containing NMP, which over time, could cause environmental concerns. In this study, we have tried to optimize regeneration of the NMP extraction from butadiene production. It is shown that at higher temperatures NMP is separated from the residue with close to 90% efficiency, and the solvent residue proved to be the most effective with a 6: 1 ratio.
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In the present work we studied the effect of inoculating corn plants with the maize bushy stunt phytoplasma on the activity of the enzymes peroxidase, β-1,3 glucanase and chitinase. The experiments were carried out inside a greenhouse. Plants of a resistant and a susceptible corn hybrid were inoculated by using infective Dalbulus maidis leafhoppers 10 days after sowing. When symptoms started to appear, leaf samples were collected at different periods to quantify enzyme activity. The results showed an increase in the activity of the three enzymes in inoculated plants of both hybrids. In general, the values observed for the level of the different enzymes were higher in the susceptible hybrid when compared to the resistant one. Thus, the increases in peroxidase, β-1,3 glucanase and chitinase levels in inoculated plants are evidence of changes in the host metabolism caused by the phytoplasma. On the other hand, since the increases could not be correlated with plant resistance further studies are needed to explain such changes.
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Ravintolan viihdeohjelma. Sama nimi mutta eri sisältö kuin URN:NBN:fi-fe201211129708:ssa
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Ravintolan viihdeohjelma. Sama nimi mutta eri sisältö kuin URN:NBN:fi-fe201211129707:ssa
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20 x 29 cm
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20 x 29 cm
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20 x 27 cm
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20 x 27 cm
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kuv., 11 x 14 cm
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kuv., 11 x 15 cm
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13 x 21 cm
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Erip. Suomalais-ugrilaisen seuran aikakauskirjasta, 17.
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Painovuosi nimekkeestä.
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Painovuosi nimekkeestä.
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Arkit: 1 arkintunnukseton lehti, F4 G3. - S. [2] tyhjä.