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- Alkalies<br />Glass-ceramics<br />Internal friction<br />Silicates (1)
- Alternaria<br />Cellulase<br />Cellulose<br />Hydrolysis<br />Plant cell culture (1)
- Digital filters (Mathematics)<br />Linear systems<br />Seismology -- Data processing (1)
- Newtonian fluids<br />Polymer solutions<br />Frictional resistance (Hydrodynamics)<br />Viscosity -- Measurement (1)
- Thermodynamics<br />Zinc oxide<br />Ferric oxide<br />Magnetite (1)
Articles 1 - 5 of 5
Full-Text Articles in Engineering
The Thermodynamics Of The Zno-Fe₂O₃-Fe₃O₄ System, Robert Lee Benner
The Thermodynamics Of The Zno-Fe₂O₃-Fe₃O₄ System, Robert Lee Benner
Doctoral Dissertations
"The purpose of this investigation was to (1) experimentally locate certain phase boundaries in three isothermal sections of the zinc oxide - ferric oxide - magnetite phase diagram, (2) to experimentally determine some of the thermodynamic properties of the zinc oxide - ferric oxide - magnetite system, (3) to use the thermodynamic properties of the zinc oxide - ferric oxide - magnetite system to evaluate the pseudo-binary system between zinc ferrite and magnetite, (4) to construct a compound stability diagram for the zinc-iron-oxygen-sulfer system"--Introduction, Statement of the Problem, page [1].
Drag Reduction In Newtonian Polymer Solutions, Harry C. Hershey
Drag Reduction In Newtonian Polymer Solutions, Harry C. Hershey
Doctoral Dissertations
"Prior work in the area of drag reduction has been mainly limited to aqueous solutions. Theoretical and empirical analyses of the resulting data in aqueous solutions have been hindered by the fact that some polymers cause drag reduction and others do not...This investigation was directed to the study of how the size and configuration of the polymer molecule in solution affected drag reduction and the related phenomenon of turbulence suppression. Apparatuses were designed and built to measure viscometric flow, curves, friction factors, velocity profiles, and normal stresses (by a jet thrust technique developed by Metzner and associates)"--Summary, page 1-2.
An Introduction To Linear Time-Variant Digital Filtering Of Seismic Data, Richard Harold Lassley
An Introduction To Linear Time-Variant Digital Filtering Of Seismic Data, Richard Harold Lassley
Doctoral Dissertations
"The exploration geophysicist is constantly searching for new and better methods for analyzing seismic data. The primary purpose of this dissertation is to introduce linear time-variant digital filters as a technique for the filtering of seismic data. Methods of characterizing linear time-variant digital filters are discussed in general terms. The advantages of the different impulse and frequency responses are cited. In addition, the meanings and possible interpretations of the time and frequency variables introduced are considered. The concept of linear time-variant digital delay filters is presented along with their relationship to impulse responses. A pictorial diagram of discrete time-variant impulse …
Internal Friction Of Mixed-Alkali Silicate Glasses, James E. Shelby
Internal Friction Of Mixed-Alkali Silicate Glasses, James E. Shelby
Doctoral Dissertations
"The mixed alkali effect in silicate glasses was examined from internal friction measurements made over the temperature range from -190 to 500⁰C and at a frequency of 0.4 Hz. Supplemental measurements of the activation energy for the different internal friction peaks, dynamic shear modulus, density, and index of refraction were also made. All measurements were confined to silicate glasses containing mixtures of Li-Na, Li-K, Li-Rb, Li-Cs, Na-K, Na-Rb, Na-Cs, and K-Rb. Rötger's interpretation of the internal friction of mixed-alkali silicate glasses is shown to be incorrect. A previously unreported internal friction peak was observed whenever two different alkali oxides were …
The Microbial Hydrolysis Of Cellulose And Some Factors Affecting The Production Of Cellulase In A Submerged Culture Of Alternaria Sp, Robert Murray Logan
The Microbial Hydrolysis Of Cellulose And Some Factors Affecting The Production Of Cellulase In A Submerged Culture Of Alternaria Sp, Robert Murray Logan
Doctoral Dissertations
"A mile hydrolyzing procedure was utilized to degrade oak sawdust. Its capability of producing a suitable fermentatation [sic] medium was studied. In the interest of solubilizing, enzymatically, the carbohydrate portion of oak sawdust, an investigation was conducted in which various microorganisms were examined for their ability to utilize different forms of cellulose for their growth and to produce cellulose decomposing enzymes. The microorganisms included a myxobacterium, several fungi, and a wood-rotting basidiomycete. The fungi included two highly cellulolytic organisms, Myrothecium verrucaria and Trichoderma viride. The myxobacterium used was Sorangium cellulosum and the basidiomycete was Pleurotus ostreatus. The principla substrates employed …