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Microencapsulation As An Alternative To Emulsification For Preparing As A For Use In Papermaking, William J. Corriveau
Microencapsulation As An Alternative To Emulsification For Preparing As A For Use In Papermaking, William J. Corriveau
Masters Theses
The sizing chemical ASA is emulsified to make i t compatible with the papermaking process. Unfortunately, emulsified ASA is chemically reactive with water at the elevated temperatures found in papermaking systems. As an alternative, encapsulated ASA was made and investigated for its stability towards water at elevated temperatures.
A handsheet procedure was developed to analyze emulsified and encapsulated ASA. It was concluded that the procedure gave statistically reproducible results. Investigations with the procedure revealed important variables concerning the laboratory and m ill application of ASA. Evidence indicated that retention of ASA was critical to sizing development.
Encapsulated ASA made for …
An Application Of A Heuristic Search Algorithm In Biomedical Images On The Magiscan Ii Image Analysis System, Patricia S. Humes
An Application Of A Heuristic Search Algorithm In Biomedical Images On The Magiscan Ii Image Analysis System, Patricia S. Humes
Masters Theses
The goal of this project was to successfully apply a heuristic search algorithm in the image analysis environment of the Magiscan II Image Analysis System. The purpose of this particular application was to enable the specific segmentation of a white blood cell image by outlining the boundary of the cell nucleus, a process not currently possible with the existing system software.
The method used involved tracing boundaries by choosing points based on a calculated cost factor. The cost factor has several input parameters that will enable it to be applied in a wide variety of applications. Several different cells' nuclei …
Shear Induced Anisotropy In The Rheology Of Solids Dispersions, Nicholas G. Triantafillopoulos
Shear Induced Anisotropy In The Rheology Of Solids Dispersions, Nicholas G. Triantafillopoulos
Masters Theses
Under strong hydrodynamic forces, solids dispersions could no longer be considered isotropic fluid s but rather two-phase systems. The continuous (dispersing) phase was only sheared in side an effective gap determined in a Couette flow device by the presence of solid (dispersed) phase in to suspension. Three parameters, the effective gap, percent gap reduction and the relative shear volume, were incorporated to account for the influence of solids in the rheology of their suspension.
The objectives of this study were: (1) to investigate the role of solids volumetric concentration, particle size, nominal gap and continuous phase viscosity on Hercules Hi-Shear …