445 resultados para Azeotropic distillation


Relevância:

10.00% 10.00%

Publicador:

Resumo:

A carrier distillation spectrochemical method has been successfully adapted to direct reading spectrometry. Direct reading techniques have been developed for the rapid analyses of aluminum in plutonium peroxide to demonstrate the capability of direct reading for process impurity control.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Some reports issued combined.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

In 10 nos. each year, 1907-1909; in 9 nos. each year, 1910-1911: 1. Pulp wood consumption. 2. Lumber, lath and shingles. 3. Slack cooperage stock. 4. Tanbark and tanning extracts. 5. Veneers. 6. Tight cooperage stock. 7. Wood distillation. 8. Cross-ties purchased. 9. Poles purchased. 10. Forest products of the United States.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

"Contract FY 81-8/AE-8."

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The letter, p. [2]-4, from the Treasury Dept. Revenue Office is signed by Samuel Smith.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

"List of patents granted by the United States, for improvement in distillation, on stills, and refining of liquors": p. 329-335.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Flavoring is still a difficult problem in the snack food industry because of the high volatility of flavors and their instability under extrusion condition. Although postextrusion added flavor is commonly used, it suffers from numerous drawbacks. Flavor losses at the exit die because flash distillation is a critical issue and can only be minimized by controlling the pressure difference at the end of the barrel and the exit die, which, however, affects other desirable product characteristics. Residence time distribution (RTD), as an important intermediate process variable that among others controls the extent of reactions, can also be a major determinant on flavor retention during extrusion. Encapsulation of flavors is a promising alternative to enhance the retention of preextrusion added flavor during extrusion. The capsules should withstand high temperature and shear conditions in, the extruder barrel. Various encapsulation techniques and their encapsulated flavor characteristics are illustrated.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Fluorescence and confocal laser scanning microscopy were explored to investigate the movement and localization of mineral oils in citrus. In a laboratory experiment, fluorescence microscopy observation indicated that when a 'narrow' distillation fraction of an nC23 horticultural mineral oil was applied to adaxial and opposing abaxial leaf surfaces of potted orange [Citrus x aurantium L. (Sapindales: Rutaceae)] trees, oil penetrated steadily into treated leaves and, subsequently, moved to untreated petioles of the leaves and adjacent untreated stems. In another experiment, confocal laser scanning microscopy was used to visualize the penetration into, and the subsequent cellular distribution of, an nC24 agricultural mineral oil in C. trifoliata L. seedlings. Oil droplets penetrated or diffused into plants via both stomata and the cuticle of leaves and stems, and then moved within intercellular spaces and into various cells including phloem and xylem. Oil accumulated in droplets in intercellular spaces and within cells near the cell membrane. Oil entered cells without visibly damaging membranes or causing cell death. In a field experiment with mature orange trees, droplets of an nC23 horticultural mineral oil were observed, by fluorescence microscopy, in phloem sieve elements in spring flush growth produced 4-5 months and 16-17 months after the trees were sprayed with oil. These results suggest that movement of mineral oil in plants is both apoplastic via intercellular spaces and symplastic via plasmodesmata. The putative pattern of the translocation of mineral oil in plants and its relevance to oil-induced chronic phytotoxicity are discussed.