Silicon-photonic interferometric biosensor using active phase demodulation

Heterogeneous catalysts, used in industry for the production of fuels and chemicals, are microporous solids characterized by a high internal surface area. The catalyticly active sites may occur at the surface of the bulk solid or of small crystallites deposited on a porous support. An example of the former case would be a zeolite, and of the latter, a supported metal catalyst. Since the activity and selectivity of a catalyst are known to be a function of surface composition and structure, it is highly desirable to characterize catalyst surfaces with atomic scale resolution. Where the active phase is dispersed on a support, it is also important to know the dispersion of the deposited phase, as well as its structural and compositional uniformity, the latter characteristics being particularly important in the case of multicomponent catalysts. Knowledge of the pore size and shape is also important, since these can influence the transport of reactants and products through a catalyst and the dynamics of catalyst deactivation.

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Comparison of active phase labor between triplet, twin, and singleton gestations

Journal of the Society for Gynecologic Investigation ◽

10.1016/s1071-5576(00)00067-8 ◽

2000 ◽

Vol 7 (5) ◽

pp. 297-300 ◽

Cited By ~ 5

Author(s):

R Silver

Keyword(s):

Active Phase

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Temporal evaluation of fringe patterns with spatial carrier with an improved asynchronous phase demodulation algorithm

Journal of Modern Optics ◽

10.1080/0950034031000137536 ◽

2004 ◽

Vol 51 (1) ◽

pp. 97-109 ◽

Cited By ~ 1

Author(s):

J. A. Gómez-Pedrero ◽

J. A. Quiroga ◽

M. Servín

Keyword(s):

Fringe Patterns ◽

Phase Demodulation

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CHANGES IN THE METABOLISM OF CALCIUM AND PHOSPHORUS IN THE VARIOUS PHASES OF ACROMEGALY AND FOLLOWING THE IMPLANTATION OF THE PITUITARY GLAND WITH 90Y

Acta Endocrinologica ◽

10.1530/acta.0.0360161 ◽

1961 ◽

Vol 36 (2) ◽

pp. 161-179 ◽

Cited By ~ 6

Author(s):

G. M. Molinatti ◽

F. Camanni ◽

O. Losana ◽

M. Olivetti

Keyword(s):

Pituitary Gland ◽

Marked Decrease ◽

Active Phase ◽

Tolerance Test ◽

Urinary Calcium ◽

Phosphorus Metabolism ◽

Blood Calcium ◽

X Ray ◽

Calcium Retention ◽

Calcium And Phosphorus

ABSTRACT A study of calcium and phosphorus metabolism has been carried out on 13 acromegalic patients, in various stages of the disease. This study was repeated in nine patients following implantation of the pituitary gland with 90Y and in another two patients after deep X-ray therapy and suction removal of a pituitary adenoma respectively. Increased urinary calcium and phosphorus excretion was found in all the patients in whom the disease was in an active phase of evolution. The calcium tolerance test revealed a marked decrease of calcium retention in certain subjects, while in others, calcium retention was found to be increased. Such changes were not found in patients in whom the disease was in a quiescent phase. The blood calcium, phosphorus and alkaline phosphatase were found to be either normal or slightly increased. The implantation of the pituitary gland with 90Y and deep X-ray therapy induced a marked decrease of hypercalciuria, both spontaneous and induced, and of hyperphosphaturia, together with a definite improvement, of the clinical picture and glucose metabolism. It is concluded that the changes in calcium and phosphorus metabolism described above depend either directly or indirectly on a pituitary factor. They may therefore prove a reliable index for assessing pituitary growth hormone activity.

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