Digital Commons Network^™

In Vitro Hypothalamic Stimulation Of Fsh Synthesis And Release In Anterior Pituitaries From Five- And Twenty-Five-Day-Old Female Rats, James A. Dibbet

Masters Theses

No abstract provided.

Effects Of Extraneous Auditory Stimulation On Visual Choice Reaction Time, William J. Wenger

Masters Theses

No abstract provided.

The Effects Of Zeta Potential And Flocculant Molecular Chain Length On The Flocculation Of Fines, Kai F. Chiu

Paper Engineering Senior Theses

The factors controlling floc formation and cohesion are discussed in terms of fiber entanglement, electrokinetic potential and fiber-polymer bridging. The methods of measurement of zeta potential and degree of flocculation are also considered. In addition, an experiment is designed to relate zeta potential, molecular weight of synthetic polymers and the degree of flocculation of fines.

It is found that fiber length is the most predominant factor controlling flocculation. The bridging effect of polymer comes next. The higher the molecular weight, the greater the degree of flocculation. The electrokinetic potential effect is only influential if simple electrolytes are used as flocculant …

A Comparison Of Fiber Orientation On Fourdrinier And Verti-Forma Paper Machines Using The Instron Tensile Tester, Paul J. Kiffe

Paper Engineering Senior Theses

Many of the fundamental sheet properties are inter-related with the fiber orientation of the sheet. Until recently, this sheet was made of a Fourdrinier machine and the relationships were thoroughly studied. The advent of the Verti-Forma has opened up a new field of study. The objective of this thesis was to compare the fiber orientation in the two-wire Verti-Forma with the conventional Fourdrinier using the Instron tensile tester.

Test samples were acquired from the pilot Fourdrinier at Western Michigan University, a Fourdrinier at Allied Paper Company, and the Verti-Forms also at Allied. Full and split sheet halves were tested for …

The Application Of Stress-Strain Analysis In Routine Control, Richard L. Memmer

Paper Engineering Senior Theses

Many of the empirical strength tests used for determining end use performance of a paper sheet do not give a true indication of actual sheet properties and performance. The empirical tests of burst, tear, and folding endurance were made on eighteen paper samples of different grades of papers. The fundamental tests of tensile strength, elongation, and tensile energy absorption were also made on the same samples using a stress-strain tester. The fundamental tests were used in showing deficiencies and discrepancies in the empirical test values.

The discrepancies found indicated a need for increased fundamental testing to be use in predicting …

The Effects Of Ph On Cationic Agents To Increase The Efficiency Of Tio2 In Paper, Stanley L. Oakleaf

Paper Engineering Senior Theses

The effect of pH on the efficiency of the cationic agents, Kymene 557 (Epichlorohydrin) and Tydex (Polyethylenimine), was studied, and the efficiencies of the two cationic agents were compared.

The pH at which cationic agents are most effective, considering percent retention of titanium dioxide, is pH 5.7 at the time of titanium dioxide slurry addition. The pH for optimum opacity in a sheet is pH 6.0.

A pH that is controlled by alum, rather than independently of alum, produces higher titanium dioxide retentions and opacities. Maximum efficiency is not controlled by pH alone. An alum loading of about 3.5% should …

Turbidity Reductions By Enzymatic Hydrolysis, John Nowak

Paper Engineering Senior Theses

Turbidity has long been a problem to the paper industry. In the past, it has been mainly associated with secondary fiber mills, among others. However, with the recent increase in the price of virgin pulp, other mills are seriously considering secondary fiber as a substitute for virgin pulp. Therefore, turbidity may become a problem to a larger number of mills in the future. Turbidity arises when starch and a filler are sheared together in a system. It has been noted in the literature that hypochlorite-oxidized starch produces the greatest turbidity phenomenon.

This project assumed that the size of the starch …

The Effects Of Maternal Deprivation And Early Social Isolation On Emotionality And Discriminated Avoidance Learning In The Rat, Edward N. Schneider

Masters Theses

No abstract provided.

A Comparison Of The Explanatory Utility Of Theories Of Social Change: Parsons And Other Selected Theorists, Joseph N. Muthiani

Masters Theses

No abstract provided.

An Investigation Of Factors Related To Student Satisfaction And Dissatisfaction With High School, Delbert B. Beelick

Dissertations

No abstract provided.

A Study Of Factors Related To Student Ratings Of College Instructors, Ronald M. Wolthuis

Dissertations

No abstract provided.

In-Service Education: An Evaluation Of Title Iii Project Epic, Patricia M. Skrocki

Dissertations

No abstract provided.

Cell-Free Amino Acid-Incorporating Systems From Mesofhilic And Thermophilic Species Of The Genus Bacillus, Nisson Schechter

Dissertations

No abstract provided.

Purification And Properties Of Dna Polymerase From Bacillus Licheniformis And Bacillus Stearothermophilus, Bruce A. Roe

Dissertations

No abstract provided.

The Reaction Of Ethylenediamine With Tetradentate Cobalt(Iii) Complexes, Laura H. C. Huang

Masters Theses

No abstract provided.

Pretest Case History Information And Examiner Experience As Determinants Of Scoring Variability On Wechsler Intelligence Tests, Joseph J. Auffrey

Masters Theses

No abstract provided.

The Doctrine Of The Recapitulation In The Theology Of Irenaeus Of Lyons, Apostolos N. Andritsopoulos

Masters Theses

No abstract provided.

An Analysis Of Dogmatism And Military Experience, Daniel C. Hoeschen

Masters Theses

No abstract provided.

The Effects Of Light Deprivation, Housing Arrangement And Duration Of Treatment In Problem Solving Behavior In The Rat, Juan Carlos Carena

Masters Theses

No abstract provided.

Maintaining Responding During Stimulus Generalization Testing In Extinction, Michael F. Glenn

Masters Theses

No abstract provided.

Cobalt(Iii) Complexes With 1,2-Propanediaminediacetic Acid, Paul John Magnell

Masters Theses

Introduction

Aminocarboxylic acid cobalt(III) complexes have been of interest to inorganic chemists since 1909 when Ley and Winkler isolated violet and rose colored geometric isomers of tris amino acid complexes of glycine and alanine.¹ More recently, considerable interest has been shown in the study of the stereochemistry and optical activity arising from configurational and vicinal interactions of these complexes. Nuclear magnetic resonance of the methylene protons on the carboxylate portion of the coordinated ligand has also been studied.

Of immediate interest to this study is the stereo-chemistry of complexes containing flexible tetradentate ligands. A tetradentate ligand may be constructed …

Synthesis And Structure Proof Of Cis-6,6-Dichloro-2-Diphenylmethylene- Bicyclo [3.2.0] Hept-3-Ene-7-One And Cis-2,2- Dichloro- 1,2,2a,7a-Tetrahydro- 7-Diphenylmethylene-Cyclobut (A) Inden-1-0ne, William Douglas Barta

Masters Theses

Introduction

The purpose of this research endeavor was to determine the structures of the adducts of dichloroketene with diphenylfulvene and benzodiphenylfulvene. Structure elucidation was attempted by chemical degradation and nmr analysis.

The structures of the adducts of dichloroketene with cyclopentadiene^1,2 and indene^3,4 have been determined by previous workers. The influence of the exocyclic double bond on the mode of cycloaddition is unknown.

An Evaluation Of Student Attitudes In The Audio-Tutorial Biological Science Program At Western Michigan University And How They Are Reflected In Student Achievement Versus Time Spent In Laboratory, Dorothy Anne Hackett

Masters Theses

No abstract provided.

A Comparison Of Luteinizing Hormone And Prostaglandin F2 Α Stimulation Of Pseudo-Pregnant Rat Ovarian Steroidogenesis In Vitro, Ross R. Erickson

Masters Theses

No abstract provided.

Student Attendance And Attrition Of The Entering Class Of 1966 At Western Michigan University, Michael W. Moran

Masters Theses

No abstract provided.

Basic Instrumentation Of A Three-Zone Convection Coater Dryer For Calculation Of Heat And Mass Balances, Byron H. Mckinstry

Masters Theses

No abstract provided.

Stuttering Tremor; An Exploration Of Methodologies For Recording And Analysis, James J. Welsh

Masters Theses

No abstract provided.

The Effects Of Token Reinforcement On School Attendance And Study Behavior In A Special School For Delinquent And Pre-Delinquent Juvenile Males, Michael L. Boyle

Masters Theses

No abstract provided.

The Utility Of Social Psychological Variables As Predictors Of Educational Aspirations, Robert W. Bilby

Masters Theses

No abstract provided.

Baseline Response Rate And The Effect Of A Stimulus Which Precedes Response-Independent Reinforcement, William M. Arnold

Masters Theses

The relationship between baseline response rate and the effect of presenting a stimulus followed by response-independent reinforcement on baseline response rate was investigated in this study. Six pigeons were divided into two equal groups, one of which was conditioned to key peck on a VI-DRH schedule of food reinforcement, the other on a VI-DRL schedule of food reinforcement. Once responding had stabilized, a tone was introduced seven times during each session followed by a response-independent food reinforcement. The results indicated no change in the response rate of the VI-DRH group during the tone, and acceleration of responding during the tone …