Towards a rational basis for selection of excipients: Excipient Efficiency for controlled release

Four starch-encapsulated formulations of EPTC(S-ethyl dipropylthiocarbamate) and of butylate(S-ethyl diisobutylthiocarbamate) were prepared and evaluated by comparison with their respective emulsifiable concentrate formulations for their slow-release capabilities and efficacies. Chemical and biological evaluation indicated that difference in controlled-release could be achieved by the selection of the starch xanthate and oxidant used in the formualtion process. EPTC and butylate released slower when formulated as starch-encapsulated granules than when formulated as emulsifiable concentrates under soil conditions that favored rapid release. The initial release was adequate for weed control and slow enough for desired residual activity. Repeated seeding and harvesting the treated soils and bioassays of treated soils generally produced release rate anticipated from short term dry and wet chemical tests.

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Optimal Modal Control

Measurement and Control ◽

10.1177/002029407300600704 ◽

1973 ◽

Vol 6 (7) ◽

pp. 301-303 ◽

Cited By ~ 6

Author(s):

M. A. Woodhead ◽

B. Porter

Keyword(s):

Optimality Conditions ◽

Closed Loop ◽

Loop System ◽

Modal Control ◽

Rational Basis ◽

Closed Loop System ◽

Weighting Matrix ◽

Selection Of ◽

Control Theories

In this paper, optimal and modal control theories are combined to form a new theory of optimal modal control. This theory provides a rational basis for the selection of a modal state weighting matrix which ensures that the plant matrix of the resulting optimal closed-loop system has prescribed eigenvalues. Optimality conditions for the choice of these eigenvalues are given.

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An algorithm for selection of best orthonormal rational basis

Proceedings of the 36th IEEE Conference on Decision and Control ◽

10.1109/cdc.1997.657631 ◽

2002 ◽

Cited By ~ 6

Author(s):

P. Bodin ◽

L.F. Villemoes ◽

B. Wahlberg

Keyword(s):

Rational Basis ◽

Selection Of

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DEVELOPING A RATIONAL BASIS FOR SELECTION OF ANTIOXIDANT SCREENING AND TESTING METHODS

Acta Horticulturae ◽

10.17660/actahortic.2006.709.9 ◽

2006 ◽

pp. 79-94 ◽

Cited By ~ 15

Author(s):

K.M. Schaich

Keyword(s):

Rational Basis ◽

Testing Methods ◽

Selection Of

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On model reduction with consecutively selected rational basis

International Journal of Wavelets Multiresolution and Information Processing ◽

10.1142/s0219691316500028 ◽

2016 ◽

Vol 14 (01) ◽

pp. 1650002

Author(s):

Minggang Fei ◽

Wen Mi ◽

Yubin Pan

Keyword(s):

Steady State ◽

Hardy Space ◽

Model Reduction ◽

Numerical Algorithm ◽

Basis Functions ◽

Rational Basis ◽

Fourier Decomposition ◽

Adaptive Fourier Decomposition ◽

The One ◽

Selection Of

In this paper, we study model reduction by using rational orthogonal bases by consecutively selecting poles for the basis functions. An algorithm modified from adaptive Fourier decomposition (AFD) in Hardy space is presented. In this algorithm, the one-by-one selection of poles makes the numerical algorithm easy to implement, which also keeps the steady-state values equal. The approximating results are comparable to other classical methods.

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