Life Sciences Commons^™

The Evaluation Of The Printability Of Papers By The I.G.T. Method, Robert W. Shaw

Paper Engineering Senior Theses

Introduction

The purpose of this investigation was to determine to what extent the I.G.T. Tester could be used to determine the printability of paper. The investigation was carried out along two related paths. First to determine if the I.G.T. Tester could be used to give indications of actual press printability and secondly to determine if the results of the I.G.T. Tester were reproducible.

Some Effects In Chlorine Dioxide Purification Of Kraft Softwood Cellulose, Maynard C. Nieboer

Paper Engineering Senior Theses

Introduction

Up until the middle thirties, chlorine dioxide had been considered an expensive bleaching agent and also had been too explosive to ship as a gas, so it had remained a laboratory curiosity since its discovery in the 19th century. In the middle thirties, Mathieson Chemical Corporation found that solid sodium chlorite was a cheap and effective carrier of chlorine dioxide. This discovery opened the door for extensive use of chlorine dioxide and since then it has come into its own as a bleaching agent. This investigation is concerned with the three methods of generation of chlorine dioxide from sodium …

The Influence Of Hexamethylenetetramine And Formaldehyde On The Rheological Behavior Of Casein Base Coating Colors, Chester W. Faram

Paper Engineering Senior Theses

The experimental work presented in this thesis shows the effects of formaldehyde and hexamethylenetetramine on the flow characteristics of coating colors formulated with casein as an adhesive. All experiments were performed at room temperature.

In general, the pH has marked effect upon viscosity of the coating colors: the higher the pH value, the more viscous the coating color. Furthermore, formaldehyde reacted faster with proteinaceous coating colors than hexamine.

Specifically, coating colors containing four per cent hexamine showed little change in viscosity and flow behavior while coating colors at the neutral pH value of seven containing eight per cent hexamine showed …

Synthetic Polymers In Coating Colors: The Adhesive Values Of Lattices And Their Effects On Properties Of Laboratory Coated Papers, Shwang Hsia

Paper Engineering Senior Theses

Five synthetic latices have been evaluated as to their adhesive values and influence on optical properties of the coated papers.

The five synthetic polymers were acrylates, acrylonitrile-buta-diene, polyethylene, polystyrene-butadiene, and vinyl acetate.

The latices were used to substitute, on a pound per pound basis, 25, 50 and 75 percent of the casein used as binder in a standard coating color consisting of 100 parts of coating clay and 16 parts of casein.

Higher adhesive values than that of straight casein were established by acrylates and two butadiene copolymers. Vinyl acetate and polyethylene possessed lower adhesive values than straight casein color. …

The Comparison Of High And Low Shear Viscometers For Determining Rheological Characteristics In Pigmented Coatings, Philip J. Meyer

Paper Engineering Senior Theses

Introduction

The purpose of this investigation was to determine if there was any relationship between the rheograms of the Hercules High Shear Viscometer and the Stormer Low Shear Viscometer when applied to paper pigmented coatings.

Pigmented Coating On Unbleached Paper, Robert I-Ching Yin

Paper Engineering Senior Theses

Much work has been done generally on the coating of paper, but very little literature is available on the coating of unbleached paper or unbleached book stock. Therefore, the covering power of the coating in this study is of the chief interest.

An Ecological Survey Of Maple Products As A Natural Resource Of Athens Township, Calhoun County, State Of Michigan, Ralph P. Gies

Masters Theses

I. The Problem

Statement of the problem. It was the purpose of this investigation to undertake a field study in Athens Township, Calhoun County, State of Michigan in order to (1) determine the ecological factors necessary for maple sap production; (2) relate the extent to which the natural resource is being used; and (3) determine economic and social values to the syrup producers. The information was compiled through the sue of interviews, questionnaires, research, and participation in a community project.

A Morphological Study Of Some North American Sitona (Coleoptera: Curculionidae), George J. Kidd

Theses and Dissertations

This study was undertaken to identify, if possible, some morphological characteristics of the U. S. Sitona species that would help simplify the classification of this difficult group. Because of extreme difficulty in obtaining positively identified specimens of all species reported, the scope was limited to eight identified species and one unidentified series. External structures studied include mouth parts, appendages, eyes, wings, and genitalia. The spermathecae were the only internal structures analyzed. Mandibular profiles were compared throughout the species represented and variations were noted. Labia and maxillae were observed but no distinctive differences were noticed. Antennae were found to be quite …

The Incidence Of Nasal Mites In Over-Wintering Red-Wing Blackbirds In The Vicinity Of Utah Lake, Utah, George M. Talley

Theses and Dissertations

This paper reports the incidence and associations of four species of mites, Paraneonyssus icteridius, Ptilonyssus n. sp. "A", Sternostoma n. sp. "A" , and Speleognathus sp., found in the nasal cavities of the common red-wing blackbird (Agelaius phoeniceus ssp.) and Brewer's blackbird (Euphagus cyanocephalus cyanocephalus Wagler) over-wintering in the vicinity of Provo, Utah County, Utah. Three species of mites are reported for the first time from these birds, and two of these three are undescribed species.

Distribution Of The Mammals Of The Sandia And Manzano Mountains, New Mexico, Ronald R. Clothier

Biology ETDs

The Sandia and Manzano Mountain area is divided into communities based mainly on the major types of vegetation present. These communities and their relationships to biotic provinces, life zones, and habitats are described in the section that deals with the description of the area. Several collecting sites were established in each of these communities, and an effort was made to set traps in all available types of mammal habitats.

Preliminary Experiments On The Possibility Of Inducing An Abdominal Pregnancy In The Adult Male Golden Hamster By The Transplantation Of Presumptive Embryonic Tissue From The Female, Richard T. Padula

Biology Honors Papers

This 21 page thesis describes an experiment conducted to determine whether ectopic pregnancy can be induced in a male hamster through transplantation of a fertilized egg from a female hamster.

The Effects Of Adrenal Steroids On Electrolyte And Water Balance In Force-Fed Adrenalectomized Rats, Rodney T. Houlihan

Biology ETDs

The literature dealing with various aspects of adrenal cortical function is so voluminous that any review is necessarily incomplete, both with respect to topics treated and references cited. In this paper discussion is restricted to certain features of cortex function, namely the effects on water and electrolyte balance and weight maintenance.

The Embryology Of The Paradise Fish, Macropodus Opercularis Linnaeus, Lewis M. Mulkay

Theses and Dissertations

The development of Sacropodus opercularis Linnaeus, (Perciformes: Anabantidae), is described from cleavage to five days post hatching. For the most part M. opercularis follows the pattern of typical teleostean development except as noted below: 1. The heart develops under the left eye along the anterior margin of the yolk sac. This is similar to that reported by Ingesoll (1951) for the Blue Gourami, Trichogaster trichopterus. 2. The ear develps from the head mesenchyme alongside the brain rather than from a placode. 3. The gut develops first in the posterior region then differentiates cephalad. It was also learned that: 1. No …

A Summer Deer Food Study In Tensas Parish, Louisiana, William James Sheffield Jr.

LSU Historical Dissertations and Theses

Where deer have overpopulated their range, a thorough knowledge of range conditions and deer food habits is necessary to establish proper management. This study was made on an overpopulated deer range in Northeastern Louisiana. It provides information on certain phases of deer food habits not heretofore investigated in the region. The study procedure followed a modification of the Aldous Deer Browse Survey Method, whereby a percentage sample survey was made of the density of woody and herbaceous browse species and their utilization by deer. Vines made up 55 per cent, trees and shrubs 31 per cent, and forbs 14 per …

Bleaching Of Kraft Pulp By Means Of Hydrogen Peroxide. The Effect Of Acid Treatment And Calcium Chloride Treatment Before The Last Stage, William J. Haselow

Paper Engineering Senior Theses

From the results of the experimental work conducted, it appears that hydrochloric acid pretreatment of chlorinated and caustic extracted, and, also, chlorinated, caustic extracted, and calcium hypochlorite bleached kraft pulp before last stage hydrogen peroxide bleaching was not beneficial to final brightness.

Calcium chloride pretreatment, on the other hand, was definitely of value to final brightness in three stage bleaching. However, calcium chloride pretreatment of chlorinated, caustic extracted, and calcium hypochlorite bleached kraft pulp did not increase pulp brightness to a significant extent.

It seems, therefore, that there was an optimum concentration of calcium salts which was of maximum benefit …

The Effect Of Galacto-Mannans On Handsheets Made From Softwood, Hardwood Or Rag Pulps, Thomas R. Murwin

Paper Engineering Senior Theses

Some published information reports that galacto-mannans, when used as strength producing beater additives, do not effect significant strength increases in hardwood pulps. In order to investigate this problem further, six pulps covering a wide range of pulping processes and chemical compositions, were evaluated before and after the addition of locust bean gum, a galacto-mannan, to the pulp.

The results obtained indicate that galacto-mannans do favorably affect the strength properties of hardwood pulps. Substantial increases in bursting strength, tensile strength and folding endurance were noted for all the hardwood pulps employed, as well as for a rag pulp. These strength increases …

An Evaluation Of Selfing Techniques For Agropyron Elongatum, Keith I. Matheson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Tall wheatgrass Agropyron elongatum (Host) Beauv. has gained in importance since its introduction into the United States in 1909 from its native habitat on saline meadows and seashores of Southern Europe and Asia Minor. This very late-maturing, coarse, nonlodging 2 1/2 to 6-foot-tall bunchgrass was discarded in Utah in 1919 for being too aggressive. It is now under production in the intermountain and other regions because of its cold and drought tolerance as well as for its salt tolerance and its ability to make excellent fall and spring recovery. According to Weintraub (1953) this salt-tolerant plant gives high yields of …

Some Supplementary Studies With Wheat Proteins, Gerald G. Porter

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included]

Introduction The importance of selecting only foods containing proteins of high nutritive value has been somewhat over-emphasized in the past because of the failure to recognize the possibility of supplementary relationships among proteins that are not of high quality. Hart (11) has wisely suggested that a food should not be relegated to an inferior class because its proteins, when fed alone, are not of high biological value. Sherman (31) has reminded us that with a knowledge of the nutritional chemistry of the proteins of various foods, it becomes relatively easy to utilize their supplementary relationships so that …

Oviposition Habits Of The Tick Dermacentor Parumapertus Neumann And Factors Influencing Egg Development, Clive D. Jorgensen

Theses and Dissertations

This paper includes data concerning the influence of relative humidity, temperature, and percentage of engorgement on the pre-oviposition period, oviposition period, post-oviposition period, and incubation period of the tick Dermacentor parumapertus Neumann. The influence of the percentage of engorgement on the oviposition period, oviposition rate, and egg number is considered. Data on the disposition and number of eggs in nature are discussed.

The Backcross Method In Breeding Tomatoes Resistant To Fusarium Wilt, Joseph L. Peterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many times the plant pathologist and plant breeder are confronted with a plant disease which requires the development of a resistant variety in a limited time. Any breeding program which requires selection from a large population during each segregating generation to insure the right genetic combination will, of course, lengthen the period which it will take to develop this resistant variety. The backcross method of plant breeding, in many cases, helps the plant pathologist and plant breeder develop resistant varieties containing characteristics similar to those of the desired parental type within a shorter period of time.

Green Rot Of Apricot, Abdul Karim N. Alrayis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This disease, also called jacket rot of apricot, was first though to be similar to a disease caused by a fungus found in central California. The Utah disease was first noted in 1953, in the Henry Hall Chinese apricot orchard at North Ogden. It was not very severe in 1953, but in 1954 and 1955 it affected half of the crop. In 1956 the disease could not be found in the orchard. Infection occurred in young green fruit resulting in brown to black necrotic lesions which varied from 1/4 to 3/4 inches in diameter. Infected fruits usually dropped from the …

Combining Field Fertilizer Trials With Soil Tests In An Effort To Obtain The Most Suitable Soil Nitrogen And Phosphorous Tests For Southern Alberta, Einard Haniuk

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Under dryland farming operations, the use of fertilizers is often restricted due to limited crop response arising from limited seasonal moisture. Once this dryland area is brought under irrigation, there is increased use of fertilizers and increased demands for greater exactness in amounts of fertilizers to apply, due to efforts which are made to increase the returns from the land by introduction of new farming techniques and crops.

The Alkali Tolerance Of Tall Wheatgrass, David L. Carter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alkali land occurs adjacent to nearly every extensively irrigated area. Much of this land is too alkaline to produce profitable crops. Each year thousands of acres or land are going out of production because or increasing alkalinity. This presents one or the most acute problem which confronts irrigation agriculture today.

A Study Of The Root Rot-Nematode Complex And The Comparative Yield Of 17 Varieties Of Alfalfa In Washington County, Utah, J. Clair Theurer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alfalfa is the major forage crop in the state of Utah. It is especially important in Washington County where mild temperatures allow the production of 4 to 5 cuttings each year, and where the dairy industry is increasing.

Effect Of Hay Or Rate Of Grain Supplementation On Performance Of Lactating Dairy Cows Fed Clipped Pasture Forage, Clive Wendell Arave

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Pasture is considered one of our most important agricultural crops, contributing more than one third of all feed consumed by livestock in the United States. High quality pasture has been recognized to be highly important in efficient milk production. It has been shown, however, that good pasture must be supplemented by concentrates if milk production is to be maintained at a high level.

A pasture mixture developed at the Utah Agriculture Experiment Station has yielded considerably more total digestible nutrients per acre than other roughages or farm grains commonly grown in Utah. Concentrates tend to be relatively more expensive than …

Cost And Efficiency In Producing Sugar Beets In Utah County, Utah, 1951, Randolph Lamar Larsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Man has always included some form of sugar in his diet. Only in the past two centuries has sugar been developed as an individual food. During that time vast amounts of money and time have gone into the development and improvement of sugar. In 1747, a German chemist by the name of Andreas Marggraf proved that sugar beets contained sugar. One of his pupils, Franz Karl Achard, in 1799 gave further evidence of this fact by his experiments.

The Effect Of Temperature On The Tension Of Water In The Soil, Gordon Stewart

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The tenacity with which water is held in the soil is an important factor in determining the availability of water to plants. It is this attraction for water by the soil particle which is the basic phenomenon of soil moisture tension. Soil moisture tension may be defined as the pressure difference that must be maintained across the wall of a porous cup in order to attain a zero transfer rate between water in the soil, which is subject to surface-force action, and water in the cup, which is not subject to surface force action.

The Measurement Of Physical Properties Of Field Soil, Wilbur Sloat

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Since the beginning of soil tilled agriculture, there have been many controversies as to the proper kinds and amounts of soil tillage required to establish and produce a crop. These controversies have ranged far and wide between farmers, extension service personnel, agricultural specialists, in fact almost every person connected with agriculture has his own unique concept of what constitutes proper tillage. The concepts vary widely from a no tillage program, for certain perennial row crops, to the extreme dust mulch program.

Thermodynamics Of Phosphate Absorption On Several Charcoals, James Duncan Beaton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Phosphorus has long been recognized by agriculturists as being one of the elements essential for plant growth. Although the total phosphorus content of a soil may be high, the amount of phosphate actually available for plant growth is often low. Many agencies such as inherent low solubilities of phosphate compounds, adsorption on Ca C03, adsorption in the diffuse double layer of clay micelles, and chemical precipitation of phosphate which refers to the removal of phosphate ions from solution and their chemical bonding to the solid phase have been studied to explain the lack of phosphate availability.

Breakfast Habits Of Some Utah School Children, Marlene M. Stegelmeier

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During the last 10 years, much emphasis has been placed on the importance of breakfast for people of all ages. Nutritionists have pointed out that persons who eat a hearty breakfast show fewer signs of mid-morning fatigue, have or develop better work habits, and do not get as hungry as those who eat little or no breakfast.

Many people do not realize the importance of starting the day with a good breakfast. The 12 to 13 hour fast which the body undergoes from the evening meal until breakfast time requires the consumption of an adequate breakfast. Many poor breakfasts may …