Digital Commons Network^™

Design Of A Yig-Tuned Oscillator, Tien Liang Jin

Theses

A technique for designing YIG (yttrium-iron garnet) tuned transistor oscillators, tunable over the range of frequencies from 500 to 950 MHZ, is presented. The approach taken differs appreciably from that used in the design of conventional LC-tuned oscillators. One major difference is that the YIG tuning mechanism is electrically controlled. The YIG tuning element is treated as a single unit and is not resolved into an equivalent LC circuit. Instead, a direct method using reflection coefficients measured at network terminals to characterize various design stages is applied. The transistor is also characterized by reflection and transmission coefficients, i.e., S-parameters. Thus …

New Jersey Institute Of Technology Catalog Of Graduate Programs 1975-1976 Academic Year, New Jersey Institute Of Technology

Course Catalogs

No abstract provided.

Design And Analysis Of An Instrument System For Rheological Testing Of Whole Blood Samples, Robert Rimvydas Sinusas

Dissertations

The dissertation covers the conceptual design of a rheometer for testing whole blood samples through to the clotting state. While the design aims at increased measurement accuracy, the design employs well known technologies and available components.

The main reason for preoccupation with blood testing is that recent investigations have indicated that physiological disorders can be correlated with rheological properties of blood. The pursuit of an improved means of correlation is initiated with a survey of the rheological properties of blood. The relevance of these blood properties is then discussed. From this discussion a broader blood model is developed as a …

Characterization Of Thixotropic Materials And Modification Of The Weissenberg Rheogoniometer, Paul Joseph Orosz

Dissertations

A Weissenberg Rheogoniometer, Model R-18, was modified to give complete rheological curves without resetting the gearbox and generate hysteresis loops for time-dependent, non-Newtonian materials. This modified instrument was used to analyze a number of materials. Standard Newtonian and known time-independent, non-Newtonian materials were studied to insure the accuracy of the instrument. Results indicated that the instrument would reproduce known viscosities of these materials, give consistent results, and not display inherent hysteresis loops with non-thixotropic materials. Materials known and suspected to be thixotropic: silicone grease-oil mixture, montmorillonite clay, and blood were tested. All displayed the characteristic hysteresis loop usually associated with …

Engineering A Primary Waste Treatment Plant, Edwin O. Onwawoma

Theses

This thesis deals with the design and construction of a primary waste treatment plant. The scope of work covered here, includes waste sampling and characterization, process design data gathering, process and mechanical design, cost estimate, and a general discussion of the construction and start-up.

In the development of this work, it is assumed that a decision has been made to build the waste treatment plant, using a known process. Therefore, economic evaluations designed to determine return on investment and selection of a process, will not be discussed. The impact the capital investment associated with the waste treatment facility has on …

The Resource Interruption Monitoring System : Basic Reporting Procedures And Sample Reports, United States. General Services Administration. Office Of Preparedness.

Computerized Conferencing and Communications Center Reports

This RIMS training manual was originally prepared by Mrs. Helen R. Nixon for use in her' office, Region 7, Dallas, Texas. It has subsequently been used for training at each OP Regional Office and at the Central Office in Washington. In anticipation of requirements for training of new users of RIMS under crisis reporting conditions, the manual is being issued for library reference and quantity reproduction.

The Interpretation Of Infrared And Raman Spectra Using Pattern Recognition, John Martin Comerford

Dissertations

An automatic classification of chemical compounds by computer processing of digitized spectral data is presented. The classification system is based on a branch of artificial intelligence known as supervised learning, and used binary linear classifiers to identify compounds as alcohols, esters, ethers, ketones or compounds containing double bonds.

Each of the 1117 spectra in volume one of Sadtler's Standard Raman Spectra was coded using a scale from 0 to 9 in the range from 4000 to 200 cm^-1. One hundred and twelve readings were taken on each spectrum. These data were then examined using pattern recognition techniques, and …

Evaluation Of Herington General Integral Test For Vapor-Liquid Equilibrium Data, Raja Gopal Nori

Theses

A new set of general integral tests for the thermodynamic consistency of isothermal and isobaric equilibrium data of binary systems was proposed by E.F.G. Herington.

The systems Benzene-Cyclohexane and Benzene-n-Propanol were examined using Herington integral test-. The data used included sets of data known to be in error. One set was, in effect, at true vapor-liquid equilibrium (the data of literature) but the other data was obtained when the system was inadequately insulated and heated.

Heringtan test showed significantly different estimates for heats of mixing for the cases involved. The best data showed heats of mixing near the theoratical values. …

Sidewise Force Exerted On Slowly Falling Spheres Inside A Circular Cylinder, Gary Mark Greenstein

Theses

Numerical values are provided for the forces that must be applied to a reference sphere to prevent its sidewise motion when two equal-sized spheres settle through a viscous liquid bounded by a cylindrical tube. These values are presented for two independent set of circumstances:

1. - the spheres are translating but not rotating
2. - the spheres are rotating but not translating

Forces have been calculated assuming various distances between the sphere centers and with the line of centers at various angles to the horizontal. The results are discussed for the case where the spheres are both translating and rotating and compared …

Effect Of Mixing On Polymerizations In Batch Reactors, John Guy Steenrod

Theses

The effects of mixing on polymerizations in batch reactors are examined theoretically for initiations by thermal decomposition of catalyst and by absorption of ionizing radiation. Mathematical expressions for predicting the first three moments of the dead polymer size distribution are presented. Two extreme mixing states. perfect and no mixing. are considered. It is shown that in batch reactors mixing in any direction in which nonuniform initiations exist increases the polymerization reaction rate and the number average molecular weight, and decreases the weight average and the polydispersity.

Experimentally, the effects of mixing were studied in a solution polymerization system, in a …

Newark College Of Engineering 1974-76 Undergraduate Programs, New Jersey Institute Of Technology

Course Catalogs

No abstract provided.

The Theory Of Multiple Measurements Techniques In Distributed Parameter Systems, Babajimi Claudius Okunseinde

Dissertations

A comprehensive theory of multiple measurements for the optimum on-line state estimation and parameter identification in a class of noisy, dynamic distributed systems, is developed in this study. Often in practical monitoring and control problems, accurate measurements of a critical variable are not available in a desired form or at a desired sampling rate. Rather, noisy independent measurements of related forms of the variable may be available at different sampling rates. Multiple measurements theory thus involves the optimum weighting and combination of different types of available measurements. One of the contributions of this work is the development of a unique …

Solvents Screening For Hydrocarbons Separation Of Close Molar Volumes, Dilip K. Kapasi

Theses

The approximate physical model for solute-solvent inter?actions presented by J, M, Prausnitz and R, Anderson¹ is briefly discussed, Applicability of Weimer, Prausnitz³ and Helpinstill, Van Winkle⁷ models is investigated using experimental values of activity coefficients for C₅ hydrocarbons in 13 solvents including one nonpolar and 12 polar solvents. Independent correlations, based on our experimental values at 45°C for normal and isopentane have been developed. Although the required thermodynamic properties are obtained through a comparative analysis of all the available and estimated methods, dependable values of activity coefficients for Isopentane and 1-Pentene could not be obtained through …

Industrialized-Subsidized Housing In The Hackensack Meadowlands, Andrew Carl Gildersleeve

Theses

New Jersey as well as the rest of the nation is beginning to feel the pinch of what has been termed the housing crisis. The products of the World War II baby-boom are now reaching the age where they require homes of their own, making the demand for good quality low-cost housing very high. At the same time, the demand for good public housing continues to grow and we are learning that our previous efforts in this field have been far from satisfactory.

In the course of this study I have looked into the possibilities of solving a portion of …

A Study Of The Vibrational Spectra Of Some Monosubstituted Pyridines, Hussein Ibrahim Abdel-Shafy

Theses

Infrared spectra in the range (4000-250 cm^-1) and Raman spectra in the range (4000-150 cm^-1) of pyridine, 2-, 3- and 4-chloro-, bromo-, and methylpyridines, 2-fluoro-, 2-amino and 4-ethylpyridines have been measured. The spectra, vibration and assignments of the observed frequencies of 2-amino-, and 4-ethylpyridines are presented for the first time. The infrared data for 2-fluoropyridine is combined with the previously reported Raman data of Stephenson and Voelz to allow complete vibrational assignments for this compound for the first time. Frequency assignments for the other molecules are re-examined and where necessary changes and/or additions in frequency assignments …

Rheo-Optical Properties Of Polyisobutylene, Russell B. Biss

Theses

This study presents quantitative experimental data on the various stress-optical characteristics of polymer liquids, specifically, polyisobutylene. Through the use of a concentric cylinder rheogoniometer and a rotational viscometer, the temperature effects of a newtonian polyisobutylene liquid. was studied and was found to have a stress-optical coefficient independent of shear stress and minor temperature changes. The experiments confirm that the birefringence is a known function of the extinction angle and the shear stress. Various polyisobutylene liquids were used in a simple flow device to observe the birefringence in the 1-3 plane and the 2-3 plane. The results indicate that the 1-3 …

A Study Of An Adiabatic Tubular Reactor For The Multiple Chlorination Of Methane, Richard L. Braun

Theses

A computer program has been developed which simulates the multiple chlorination of methane in an adiabatic, tubular reactor. Euler's method is used to approximate the solutions of the programs differential equations.

The program is designed to determine the amount of an inert diluent required in the feed stream to attain some specified conversion of methane in a safe and efficient temperature range. Particular emphasis is put on determining the amount of diluent required to attain 98% conversion of methane at an outlet temperature of 723°K. The program also determines the reactor volume necessary to achieve the specified conversion, and the …

The Steady State Heat And Temperature Distribution Of A Hot Sphere Within An Infinite Wedge, David W. Horwat

Theses

This thesis presents a mathematical model of the steady state heat and temperature distributions of a hot sphere located along the midplane of an infinitely long wedge of any arbitrary central angle. The heat and temperature distributions of this geometric configuration are of immense value, since through the use of this model as a wedge shaped unit cell the description of any number of hot spheres, arranged in a regular planar array can be immediately determined.

The method of reflections is used to solve Laplace's equation , V²T=O , analytically using the sphere and the wedge walls as …

The Study On The Soot Formation Of Hydrocarbon Flames, Yih-Jian Wu

Theses

Carbon formation during the quenching of low-pressure premixed hydrocarbon flames was studied using rapid-scanning optical and mass spectroscopy. Experimental techniques were developed and it was found that the tendency to form soot was a function of the hydrocarbon chain length. These results are relevant to the design of restartable space engines in which the use of hydrocarbon fuels is contemplated because the formation of soot in space will result in the formation of a shroud around the spacecraft which will adversely affect sensing by optical means.

The Effect Of Dry-Blending High Density Polyethylene On Final Product Properties, Charles H. Klestadt

Theses

The incentives for Dry-Blending Polyethylenes of varying property type may be economic gain, improved product quality, or both. The manufacturers' latest mode of operation involves seeking to meet their customers' needs with a product line made by using one catalyst system and operating at maximum capacity, while varying the fewest possible control parameters. Off-spec materials and on-spec materials not fitting customers' requirements are two prime targets for additional profits with proper dry blending techniques. The approach used in solving the problem involved starting with an existing product line and converting these products into a number of experimental blends. The blends …

Optimal Performance Of Equilibrium Parametric Pumps, Joseph A. Manganaro

Theses

An examination of the conditions required to obtain the optimal performance of semicontinuous and continuous parametric pumps, defined by the achieving of the maximum possible solute free product for a given column height, was undertaken. The model system sodium nitrate ? water on an ion retardation resin adsorbate was employed. Equations defining maximum values of certain important parameters such as the bottom product flow rate and reservoir displacement rate were developed by extending previous theories of parametric pumping. Experimental runs were carried out using parameters whose values were both less than and greater than the maximum values predicted for optimal …

The Determination Of An Optimum Plant Capacity In A Dynamic Economy, Frederick Louis Monesmith

Theses

A. Monte Carlo computer program has been developed in which the optimum plant capacity is determined by comparing calculated profitability criterions for various plant capacities. The estimates for input variables are developed into probability distributions. This data is then used to calculate a probability distribution for a-profitability criterion. In this thesis approximately thirty input variables are developed into beta distributions. Each variable must be estimated with a ninety percent probability estimate, a most likely probability estimate and a ten percent probability estimate. The three level estimates for each variable completely describe the beta distribution. Approximately half of the beta distributions …

The Thermal Degradation Of Polyvinyl Alcohol, Carlos Eduardo Ortiz

Theses

The thermal degradation of polyvinyl alcohol has been investigated using mass spectrometry, differential thermal analysis, and infrared spectroscopy unlike previous investigators, formaldehyde and acrolein were not observed volatiles. In addition, acetic acid was observed, a product not reported previously.

Synthetically-Generated Holographic Memory System Utilizing Partially Coherent Light, William A. Barrett

Dissertations

This dissertation proposes a novel form of optical ROM for the digital computer. This memory makes use of holographic techniques because of the advantages offered by holographic memories over conventional optical ones, especially with regard to dust and scratch sensitivity.

These advantages have long been recognized by workers in the field, indeed several holographic optical memories have already been proposed.

A survey of the state of the art of digital computer memories is offered in the introductory part of the thesis. Particular emphasis is placed on optical memories. A brief review of basic holographic theory is also included for reference. …

A Nonlinear Viscoelastic Model, Yon-Li Shangkuan

Dissertations

A nonlinear viscoelastic model has been developed to describe the non-Newtonian viscosities and the primary normal stress differences of high polymers at steady-state shearing flow.

It has been demonstrated that the Huang-Shangkuan model gives the best representation of the experimental data for a wide range of shear rates. In the high shear rate region the Huang-Shangkuan model is distinguished among other models by its capability to predict the nonNewtonian viscosities and the primary normal stress differences Which the other models fail to predict.

Continuum mechanics, Lodge's network theory and Rouse's theory provide specific information in developing our model. The theoretical …

Optimal Planning Of Fixed Route Bus Transit Systems : A Systems Approach, Young Lee

Dissertations

A new bus transit planning tool is developed for application in determining operating policies of a fixed-route bus transit system. The objective of the study is to model a bus transit system which functions under time-varying passenger demands and service characteristics.

The two phase transit model developed in this research is intended for use as a mass transit planning tool, to solve transit problems confronting the mass transit planner. The model is used to compute cost differentials in transit system options. These alternatives of expanding, abandoning or modifying service depend upon the service frequency, fleet size and other system attributes …

Effect Of Gas Temperature Gradients And Radiant Heat Transmission On Kinetic Model Behavior, Richard W. J. Robertson

Dissertations

Satisfactory methods to predict radiant heat transmission in enclosures containing a radiating gas at uniform temperature are available. These methods have been traditionally used in solutions of kinetic models.

Kinetic models are strongly temperature dependent with a difference of 10°K able to double the reaction rate. In the present investigation, calculation techniques which make allowance for the non-uniformity of gas temperatures in an enclosure are applied to the kinetic models. The furnace problem considers only the radiation section with the assumption that detailed knowledge of combustion and fluid flow pattern within the enclosure is available.

If the gas space in …

Nucleus 1974, Newark College Of Engineering

Yearbooks

This is a digitized, downloadable version of the Newark College of Engineering Nucleus.

Solvent Recovery From A Complex Process Solvent Stream, John Budavari

Theses

This work deals with the recovery of solvents from a complex process waste stream containing methylene chloride chloroform, n-propyl alcohol, isopropyl alcohol, heptane and butyl acetate. In addition to the above-mentioned solvents, the mixture is saturated with water (ca. 1%), hydrochloric acid, and contains organic and inorganic process impurities. The objective was to develop the simplest economical recovery process utilizing vapor-liquid equilibrium data, distillation and extraction procedures. Considerable effort was expended to develop precise and reliable assay methods. A process which met the necessary requirements of maximum solvent recovery with minimum waste disposal, was developed.

Reactions Of Perchloro-1,2-Dimethylene Cyclobutane With Amines, Robert James Smith

Theses

Perchloro-1,2-dimethylene cyclobutane was reacted with primary amines forming cyclic amidinium salts. Their structures were elucidated by the performance of various spectral analyses.