Now showing items 41-50 of 108
The structure and function of supported molybdenum nitride hydrodenitrogenation catalysts
(Elsevier, 1994-03)
A series of [gamma]-Al2O3 supported Mo nitrides were prepared by the temperature programmed reaction of supported molybdates with NH3. Several loadings, heating rates, and space velocities were employed in an attempt to ...
Dynamic output feedback control of minimum-phase multivariable nonlinear processes
(Elsevier, 1994)
This paper concerns the synthesis of dynamic output feedback controllers for minimum-phase multivariable nonlinear processes with a nonsingular characteristic matrix. State-space controller realizations are derived that ...
Synthesis of discrete-time nonlinear feedforward/feedback controllers
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1994-03)
This work concerns the synthesis of discrete-time feedforward/feedback control systems for general nonlinear processes with stable zero dynamics. Depending on the process under consideration, the derived feedforward/feedback ...
Positronium formation in semicrystalline poly(ethylene terephthalate)
(Elsevier, 1994-01)
The probability of positronium (Ps) formation in semicrystalline poly(ethylene terephthalate) (PET), has been investigated by means of positron annihilation lifetime spectroscopy (p.a.l.s.). The p.a.l.s. data are correlated ...
Expression, purification, and characterization of the Kunitz-type proteinase inhibitor domain of the amyloid [beta]-protein precursor-like protein-2
(Elsevier, 1994-12-14)
In this report we describe the use of the methylotrophic industrial yeast Pichia pastoris as a host system for the large scale production of the Kunitz-type proteinase inhibitor (KPI) domain of the amyloid [beta]-protein ...
tRNA-guanine transglycosylase from Escherichia coli: Recognition of dimeric, unmodified tRNATyr
(Elsevier, 1994)
In order to probe the interaction between tRNA and the tRNA hypermodifying enzyme, tRNA-guanine transglycosylase (TGT) from Escherichia coli, we have undertaken the generation of E coli tRNATyr and analogues. During efforts ...
Optimal feedback control of batch reactors with a state inequality constraint and free terminal time
(Elsevier, 1994)
In this paper we derive optimal state feedback laws for end-point optimization of a dynamic system where the final time is free and the system has a scalar inequality constraint. The existence of a singular region as well ...
Nonlinear control of a polymerization CSTR with singular characteristic matrix
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1994-06)
This experimental work concerns the multivariable nonlinear control of a pilotsize continuous polymerization reactor with generically singular characteristic matrix. The control problem is to control conversion and temperature ...
Mechanical properties of in situ composites based on polycarbonate and a liquid crystalline polymer
(Elsevier, 1994-08)
The mechanical properties of in situ composites based on blends of polycarbonate and a liquid crystalline copoly(ester amide) (Vectra B950) have been studied as functions of the liquid crystalline polymer (LCP) concentration ...