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Now showing items 571-580 of 611
Nonlinear response of an articulated offshore loading platform
(1989)
Analytical models were developed for the dynamic analysis of an articulated loading platform (ALP) and a moored tanker system under regular wave excitations. Three different mathematical models were developed: two ...
An empirical analysis of the utility of a human ecological approach for explaining the level of urban economic development
(1989)
It has been postulated recently that planning analysis, and particularly economic development research, require more studies grounded in a sound theoretical base (Blakely 1989; Fosler 1988; Malizia 1986). If planning and ...
Pre-harvest sprouting in pecans
(1989)
The temperature effect on germination response and physiological activities were compared between sprouting resistant northern pecan [Carya illinoensis (Wang) K. Kock] cultivars and sprouting susceptible southern cultivars. ...
Barotropic mechanisms associated with tropical plume formation
(1989)
The tropical plume is an upper level phenomenon with greatest frequency of occurrence over the northeast Pacific. Primarily wintertime events, plumes transport energy poleward and may be transient systems comprising a ...
Truck weight prediction modeling
(1989)
A reasonable forecast of anticipated traffic loading's is necessary to design or rehabilitate a highway. Underestimating the load experience for a highway could result in an under designed facility, leading to the need for ...
The purification and characterization of the phosphotriesterase from Pseudomonas diminuta
(1989)
The phosphotriesterase from the soil bacterium Pseudomonas diminuta has been purified to homogeneity from two different expression systems using only three chromatographic steps. This represents the first total purification ...
A high pressure, high temperature vibrating tube densimeter : densities of toluene, ethylbenzene, and 2,2,4-trimethylpentane
(1989)
A semi-automated vibrating tube densimeter designed for operations between 100 and 700 K and to 70 MPa is described. This densimeter features continuous flow of the sample fluid and a fluid conditioning system that rapidly ...
Overproduction and utilization of enzymes in synthetic organic chemistry
(1989)
The utility of papain in the synthesis of peptides containing D or unusual amino acids has been demonstrated. A novel one-step synthesis of tripeptides has been developed using papain. The amidase activity of a number of ...
Regulation of cytochrome P-450IA1 gene expression
(1989)
The mechanism by which cytochrome P-450IA1 gene expression is induced by polycyclic aromatic hydrocarbons and various polychlorinated dibenzo-p-dioxins involves an intracellular protein known as the Ah receptor. Within the ...
Toward a theory of urban structure : the impact of seasonal-population activities on city structure
(1989)
A critical review of the literature of urban structure reveals that there are two main problems related to the theory of urban structure: (1) the absence of a comprehensive theory, and (2) the underestimation of the role ...