Digital Commons Network^™

Morphological Analysis Of Microvessels Using High Voltage Electron Microscopy (Hvem), Ibm Personal Computer And 3-D Reconstruction Software, Wieslaw Slawomir Krajewski

Theses

The mesenteric arterioles (outer diameter < 100 µ) from a normotensive and a hypertensive dog were perfused in situ, excised, post-fixed and embedded in Spurr medium block. Thick serial cross sections (0.5 µ) of the vessels were obtained from hand formed mesas and placed on Formvar coated slot grids.

The cross sections were subjected to High Voltage Electron Microscopy (HVEM) and five or more electronmicrographs were taken to cover the individual cross sections. The prints of electronmicrographs were linearly enlarged (3X) and made into photomontages of sections. The membrane contours in the montages were traced on transparent overlays, producing polygons which in turn were traced on GTCO digitizing pad. All polygons were labeled, color coded and stored in IBM PC's filing system. The vessels were reconstructed from up to 100 whole cross sections and subjected to cell compartmentalvolume analysis. The reconstructed images can be …

Multiple-Screen Panning System, Abdo Fathy Youssef

Theses

There is a need to provide graphics capabilities for the objective of "Group Graphics". This is the ability of a group of humans to work collaboratively on the same diagram. It is the intent of this project to provide some of the fundamental software tools to allow a group of individuals to deal with a "mosaic" form of graphics made up of many separate screens that can be panned and conceptually edited by each individual who is working on portions of the overall document.

Simple tools are provided for the creation of graphics screens as well as saveing and retrieving …

Effect Of Low Energy Argon Laser And Dihematoporphyrin Ether On The Growth, Viability, And Catecholamine Production Of C1300 Murine Neuroblastoma Cells In Vitro, David William Rogers

Theses

Low power laser induced fluorescence of dihematoporphyrin ether (DHE, photofrin 2) is used to detect cancer. The goal was to determine the effect of low power argon laser light and DHE on C-1300 murine neuroblastoma cells (MNB, NB41A3). The study groups were as follows: Control, untreated cells (C), DHE only at concentrations of 1 (D1) and 5 (D5) µg/ml, Argon laser 2 light only at exposure times of 1 minute (1.8 J/cm² , L1) 2 and 5 minutes (9.0 J/cm² , L5), combined treatment of Light at 1, 5 minutes, and DHE at 1, 5 µg/ml.

Nine replicates …

Production Effects Of Biotechnology In The Dairy Industry: An Exploratory Study, Kenneth L. Schurter

Theses

Genetically engineered products are being produced at an economical level. products is bovine sornatotropin. One of these Injections of bovine sornatotropin increase milk yield in dairy cattle. This increase in production per cow is consistent with the thirty year trend of fewer dairy farms, fewer cows, and more milk per cow.

Starting in the 1950's in the mechanical era, farmers went from horses to tractors. In the chemical era, herbicides and fertilizers started being used. Now in the 1980's the technical era is coming in to existence . Through all of these era's there was controversy. Each of these era's …

Suitability Of Expressive Therapy Methods With Preschool-Aged Flood Victims, Susan A. Gerhard

Theses

This project presents an expressive therapy program with preschool-aged victims of a natural disaster . Primary process level communication is discussed as the underlying mechanism in the expressive therapy process . The suitability of expressive therapy methods is examined through informal interviews with parents and teachers, observations by the program facilitator , and the products the children created . The expressive therapy procedure was shown to be suitable f o r this age group . The results which showed expressive therapy methods to be suitable with preschool-aged victims of a flood were that the children reacted to the expressive therapy …

The Need For Audio-Visual Curriculum, Barbara Arnold

Theses

The purpose of this project was to study the effectiveness of audio-visual aids in the cla9sroom. To justify the use of audio-visual aids in the classrooms, an attempt was made to test the hypothesis that for audio-visual aids to be used effectively to teach details and comprehension of story and lesson content, they must be properly introduced with a study guide and followed by related activities and e valuation . Three heterogeneously grouped classes were regrouped for this project. Three units of literature, science and social studies were planned with three lessons for each unit. This allowed the teachers to …

My Thesis, Kandice L. Kelley

Theses

Unavailable.

Measurement Of The Thermal Conductivity Of Thin Solid Films With A Thermal Comparator, Charles A. Amsden

Theses

A direct-reading thermal comparator was used to measure the thermal conductivities of several thin solid films. This new application of the thermal comparator was based on heat flow modelling using the thermal constriction resistance, generalized here for the case of a film on the surface of an infinite half-space.

Four dielectric optical coating materials were tested, and found to have thermal conductivities significantly lower than those for the same material in bulk form.

The finite element method was used to estimate the minimum sample dimensions required for accurate results, and the variation of the thermal constriction resistance with the assumed …

Computer Graphics And The Harvard Interactive Videodisc Project, David B. Marshall

Theses

Not Included

Graphical Programming System For Dataflow Language, Jyun-Jier Roland Jehng

Theses

Dataflow languages are languages that support the notion of data flowing from one operation to another. The flow concept gives dataflow languages the advantage of representing dataflow programs in graphical forms. This thesis presents a graphical programming system that supports the editing and simulating of dataflow programs. The system is implemented on an AT&T Unix^TM PC.

A high level graphical dataflow language, GDF language, is defined in this thesis. In GDF language, all the operators are represented in graphical forms. A graphical dataflow program is formed by drawing the operators and connecting the arcs in the Graphical Editor which …

My Life's Contrasts, Doreen A. Long

Theses

Not Included

Photographic Work 1986-87, Peter Ainsworth Carter

Theses

Not listed.

History And Criticism Of Photographically Illustrated Children's Books, Debora J. Bork

Theses

None provided.

The Representation Of Symmetric Patterns Using The Quadtree Data Structure, Lucia Lodolini

Theses

Hierarchical data structures for image representation have been widely explored in recent years. These data structures are based on the principle of "recursive decomposition" of an image region. The most commonly mentioned picture data structure for two-dimensional data is referred to as a "quadtree". The purpose of this thesis is to investigate the use of a general quadtree scheme as a means of representing symmetric images. Specifically, images are generated according to the rules of selected two-dimensional plane symmetry groups.

Graphic Design Archive On Videodisc: Graphic Access, Sister Alma Mary Anderson C.S.C.

Theses

Not Included

Wire Water Wood, Agnes Stokes

Theses

None provided.

The Forms And Colors Of Nature On Silk, Sulaiman Abdul Ghani

Theses

None provided.

Approaches To The Synthesis Of Dentin Bonding Agents Containing Vinyl And Carbamate Functional Groups, Steven W. Amato

Theses

The synthesis of four new monomers containing vinyl and carbamate functional groups was attempted. The desired products were N-m-methacryloxyphenyl-O-phenyl carbamate, N-p-methacryloxy-O-phenyl carbamate, m-N-phenylcarbamato-2-methacryloxyethoxy benzoate, and p-N-phenylcarbamato-2-methacryloxyethoxy benzoate. The carbamate functional group was derived by the Lewis Acid catalyzed reaction of meta-aminophenol, para-aminophenol, meta-aminobenzoic acid, and para-aminobenzoic acid with diphenyl carbonate. The vinyl function was derived, in the case of the aminophenols, by reaction with methacrylyl chloride, and in the case of the aminobenzoic acids, with 2-hydroxyethyl methacrylate.

Partial products only were prepared, these being the two carbamate functional phenols, the two carbamate functional benzoic acids, the two methacryloxy functional derivatives …

Deuterium Isotope Effects On In Vitro Dealkylation Of 1,1-Dimethylhydrazine And 1,1-Dimethylnitrosamine Via Hepatic Enzymes, Robert Sloane

Theses

Boiling 1,1-dimethylnitrosamine or unsymmetrical dimethylnitrosamine several times with 25% NaOD in D2O promoted the complete exchange of the nitrosamine’s alpha protons for deuterium. The deuterated nitrosamine was reduced by LiAlH4, in anhydrous diethyl ether to the corresponding 1,1-dimethylhydrazine-d6. An in-process production of the oxalate salt was necessary due to the air sensitivity of the free base hydrazine. After recrystallization from absolute ethanol and extensive drying, the oxalate salt was evaluated for purity by mixed melting point, high performance liquid chromatography and thin layer chromatography. When protonated hydrazine-oxalate salt (mp=146 °C) was mixed with a sample of the exchanged hydrazine salt …

Career Education: A Second Grade Curriculum, Patricia Maender

Theses

Unavailable.

Voyage To Another City, Michael Robert Alves De Lima

Theses

None provided.

Computer Aided Instruction And A Graphical Authoring System, Catherine Lofgren Goodykoontz

Theses

In the early 1960's, the computer was first used as a means of delivering instruction to college students. Today, the computer as an educational tool has been integrated into curricula from preschool to the university. This thesis focuses upon the specification and implementation of a Graphical Authoring System which is used to create, deliver and administrate instruction of a pictorial nature (combining graphics and text). The system explores a question format different from the traditional formats of multiple choice, true-false, and fill-in-the-blank which are available in current authoring systems. The question format to be explored allows the student to identify …

Glamour, Barbara Grunbaum

Theses

None provided.

Educational/Informational Posters On Graphic Design, Sister Mary Kay Neff S.C.

Theses

I intended to design a series of orientation posters to be used as educational/informational aids in the study of graphic design. These posters might deal with the following topics: -introduction to graphic design -tools of graphic design -history of graphic design -organizational and perceptual principles -typography -image formulation -applications of graphic design

Microcomputer-Based Automated System To Monitor Flow And Respiratory Quotient, Chung C. Chien

Theses

An instrument system has been designed to monitor Respiratory Quotient experiments on rats which are living within whole-body calorimeters. By using multiplexing techniques, this system is capable of monitoring Respiratory Quotients in six calorimeters (animal chambers). It exhibits some features that make it more versatile than the previous system. One of the features of this instrument is that it uses a more accurate method of determining rapid changes in gas exchange between subject and environment. The value of this method is its ability to assess the rapid change in metabolic rate which occurs as a result of change in activity, …

Fibrin Glue For Spilt-Thickness Skin Grafts And Microsurgical End-To-End Arterial Anastomoses In Live Rats, Susan Diane Drastal

Theses

Fibrinogen and thrombin were combined to make a "glue" for adherence in microvascular anastomoses and split-thickness autologous skin grafts in rats. The powdered human fibrinogen and bovine thrombin were mixed with sterile water and each applied drop-wise through separate syringes in equal concentrations. A gelatinous clot formed in 10 seconds, and was completely coagulated in 45 seconds. In part I, one-half of the group had their grafts sutured, and one-half had their grafts glued in place.

In part II, microvascular arterial anastomoses were performed. Group I had their arteries reanastomosed using sutures only; group II had their arteries reanastomosed by …

The Effect Of Platelet Activating Factor On Leukocyte Adhesion To The Post Capillary Walls And Developing Dose Response Relationships, Michael Francis Fitzpatrick

Theses

Blood circulation at the microcirculatory level plays an important role in the inflammatory process. Adhesion and emigration of white blood cells are among the major microcirculatory responses to inflammation. It has been recently suggested that platelet activating factor (PAF) may be a significant mediator in the local inflammatory response. This research was undertaken to characterize and quantitate the effects of PAF on the adhesion of white cells to the wall of postcapillary venules of 7-80um diameter.

The hamster cheek pouch microcirculation was used as a model for microcirculatory dynamics and was prepared for both bright field and fluorescent intravital microscopy. …

Characterization Of Pulse Duplicator Model For Testing Of Heart Valves, Pankesh Nilkamal Kadam

Theses

The design and development of a pulse duplicator system for testing of prosthetic valves is described. The performance characteristics were evaluated by computing the input impedance of the system from the measured pressure and flow signals for different simulation configurations. The study has been further extended to determine the feasibility of evaluating the cardiovascular status of a patient after major open heart procedure or in state of shock.

Built on hydrodynamic principles, the model allows for a wide range of heart rates, flow rates and mean pressures to be simulated. The artificial circulatory system used as a load to the …

Analysis Of Nitrated Polycyclic Hydrocarbons, Pah-Quinones And Related Compounds In Ambient Air, Yalan Wang

Theses

Studies were conducted to characterized airborne particulate extractable organic matter (EOM) with respect to chemical composition and biological activity. It has been well established that the nitrated polycyclic hydrocarbons (nitroPAH) are environmental contaminants. To identify nitro-PAH in ambient air sample, a technique was developed involving introduction of a reducer column into an reversephase high performance liquid chromatography (HPLC) system. Strong fluorescence signals were achieved from nitro-PAH and detected together with u.v. signals for the qualitative and quantitative analysis of nitro-PAH. 2-Nitrotriptycene was synthesized according to published procedures and used as an internal standard. By use of the above technique, 9nitroanthracene, …

A Mathematical Model For The Isometric Contraction Of Smooth Muscle On The Basis Of The Phosphorylated Myosin Regulation Process, Joseph J. Kocinsky

Theses

A mathematical model was proposed for the isometric contraction of smooth muscle (i.e., vascular, urterine, & gastrointestinal) that accounts for the experimental observations on tension transients and pCa²⁺-tension curves. The model is based on the elementary reaction kinetics involved in the process; it uses the Ca²⁺-dependent myosin phosphorylation regulatory mechanism in its interpretation. The model is composed of four parts : (a) the activation of myosin light chain kinase; (b) the phosphorylation of myosin light chains; (c) the actin-myosin Mg²⁺ATPase cross-bridge reaction cycle; and (d) the development of isometric tension. The interaction of the …