Life Sciences Commons^™

A Study Of Four Species Of The Pseudoscorpion Genus Megachernes, Dwain W. Parrack

Biology ETDs

Purpose.-- The Purpose of this study is to present descriptions of three new species of the pseudoscorpion genus Megachernes, to redescribe the female of M. papuanus Beier, and to describe for the first time the male of that species.

Physical Fitness And Health Status, Jack Robert Howell

Masters Theses

No abstract provided.

The Comparative Osteology Of The Trunk Skeleton Of Five Year Classes Of The Golden Shiner, Notemigonus Crysoleucas (Mitchell), Aaron Hathaway O'Bier

Master's Theses

The golden shiner, Notemigonus crysoleucaa, forms a monotypic species in the fish family, Cyprinidae. It is a medium-sized minnow which inhabits ponds and sluggish freshwater streams in North America from latitude; 30°N. to 50°N. In the south its range is restricted to the area east of the Appalachian Mountains. The northern and western part of the range extends to Wyoming and south to the drainages of the Arkansas and upper Ohio Rivers.

Some Photographic Materials And Techniques For High School Biology Teachers, Robert L. Calentine

Dissertations and Theses @ UNI

Biology teachers in the smaller high schools are often confronted with the problem of securing sufficient classroom teaching material: charts, specimens, and reference books. A relatively inexpensive method of obtaining resource material would prove valuable to teachers confronted with this problem. Granting that actual study of specimens is of greater value than indirect methods, it is often helpful to have a supply of supplementary visual aids.

Cytogenetic Studies In The Genus Cymbidium, Donald E. Wimber

CGU Theses & Dissertations

The orchids known today make up one of the largest Angiospermous families in the world. Recent estimates place the number of genera at about 450 which estimates between 10,000 and 15,000 species (some authorities go as high as 20,000). They are without doubt one of the most highly specialized groups of green plants. Botanically the flowers are of more than passing interest for they deviate so distinctly from the norm of the Monocots. They are the possessors of a number of unique structures that are found in no other family of flowering plants.

The Effects Of Antibiotics Aureomycin And Terramycin On The Disease Crown Gall In Tomato Plants, Charles Raymond Anderson

Dissertations and Theses @ UNI

The disease crown gall manifests itself on various woody or herbaceous plants by the formation of tumor-like enlargements at the crown or on other parts or by extensive production of organs (roots, shoots). In both cases the abnormal development is an uncontrolled hyperplast, resulting in tumors or galls of varying sizes and form or in the production of organs, frequently out of normal position and in excessive numbers. Because of the frequent location of the galls on the stem or trunk near or at the ground level, the disease has been known as crown gall. Various other names such as …

Handbook Of Bacteriology For High School Teachers, David Loring Fagle

Dissertations and Theses @ UNI

The study of bacteriology is frequently not included in the high school science curriculum and often, when it is taught, it is dealt with in only a superficial manner. There are various reasons for this. Very often high school science instructors lack training in courses relating to bacteriology and consequently, feel inadequate to handle the topic with their students. Another factor rests with the fact that bacteria are difficult to study without the aid or microscopes with high power objectives. Many high schools lack this equipment. A third factor is that some parents may feel that it may be dangerous …

Tannin Content Of English Walnuts : Thesis ..., Joseph G. Natoli

University of the Pacific Theses and Dissertations

Present methods for the production of leather from animal hides still depend from the most part on the use of natural tannin extracts. During the year, 1952, the amount of natural tannin extracts used by the leather industry was 560,452,119 pounds as compared to 35,793,000 pounds of synthetic tanning materials. It is not as yet possible to produce synthetic materials as economically as the natural extracts; the result being that there is still a very great demand for natural tannin extracts. The need for finding new domestic sources of tannins is apparent when the amounts of domestic and imported extracts …

Studies On Bucephalid Cercaria Including A New Species From The Dillon Beach Area, Donald Edward Giles

University of the Pacific Theses and Dissertations

The family Bucephalidae is unique in the class Trematoda by virtue of the mouth being situated near the mid-ventral portion of the body. Other characteristics of the family include: haptor near the anterior extremity; a simple, sac-like gut with pharynx and esophagus; genital pore ventral, just anterior to the posterior extremity; gonads posterior and vitellaria species live in the gut of marine and fresh-water fishes. The metacercariae are found encysted beneath the skin or in the nervous system of other fishes serving as second intermediate hosts. Sporocysts and cercariae have been recovered from a variety of lamellibranchs.

A generalized life …

Ascidicolous Copepods Of Dillon Beach, California, David Horace Montgomery

University of the Pacific Theses and Dissertations

Work on the copepoda parasitizing anoidiens has been relatively extensive in Europe, loss so on the East Coast of the United States and negligible on the West Coast. of this work, a major portion has been concerned with the solitary ascidians, while the colonial or compound forms have been largely neglected. The apparent lack of interest in copepods parasitizing compound be attributed to the manliness of the animals, their associations with both Zooids and the colonial matrix which makes dissection difficult and the chaotic condition of their taxonomy.

Some Observations On Oral Protozoa Of Man, Howard Edwin Runion

University of the Pacific Theses and Dissertations

This investigation is based upon the occurrence of oral protozoans among 25 periodontalclasial patients in Stockton, California. It is concerned, in part, with the correlation of infections with age, sex and oral health of the host and, in part, with culture techniques. The specific cultivation of Trichomonas tenax was explored in an effort to employ an improved experimental medium.

Trichomonas tenax and Endamoeba gingivalis are the only protozoans known to occur commonly in the human mouth. Distribution is cosmopolitan and there are no known endemic areas. Incidence of these two protozoans, among periodontalclasial patients, has not been reported since the …

A Taxonomic And Ecological Study Of The Ants On The Campus Of The University Of New Mexico, Tad S. Clements

Biology ETDs

This thesis attempts to indicate some of the ways in which the ants of the campus of the University of New Mexico affect man within the small area of the campus. However, my purpose of doing the study has not been strictly limited by practical considerations. Until now, no systematic study has been made of the Formicidae of the University of New Mexico Campus. Since the habitats produced artificially by man on the University of New Mexico Campus have resulted in favoring certain species of ants not found by the writer elsewhere in the region, the present study is valuable.

Some Factors Which Influence The Rigidity And Durability Of Waxed Paperboard Cartons For Packaging Liquid Food Products, R. Nitz

Paper Engineering Senior Theses

Introduction

A. Paperboard

There are many types of heavy papers and paperboards manufactured today from various pulps. The paperboard which has grown the fastest in consumption in the past ten years is that intended for packaging foods. ⁽¹⁾ The most common food board is that manufactured on either a cylinder or fourdrinier machine, is nearly all consumed by manufacturers of varied milk cartons, and fruit juice cartons. These cartons are fabricated from the afore mentioned paperboard for many reasons.

Determination Of Percentage Of Polyethylene In Paper, James Alan Lawson

Paper Engineering Senior Theses

The purpose of this this thesis was the development of a quantitative test for polyethylene in paper. A review of the literature discloses that no published method exists; however valuable information was obtained, which directed the planning of the experimental work. A method was developed for the determination of polyethylene in paper. This method involves the extraction of paper in a Soxhlet extractor with CCl_4. The extract is evaporated to near dryness. The residue, containing polyethylene and waxes, is than extracted with diethyl ether to remove the waxes. The results of this method show that it is accurate on …

Mammals Of The Lynndyl, Utah, Sand Dune Area : A Population Problem, Hugh J. Phillips

Theses and Dissertations

The purpose of this study was to determine the kinds, population, distribution, and general habits of the mammals of the Lynndyl sand dune area. Only one article concerning the dunes was found, but several have been written on other dunes; however, none was found concerning mammals. Two quantitative studies, plot and transect trappings, were made and general observations were taken within the study area. Three types of plots; Russian thistle, juniper, and baren moving dunes; were trapped and revealed the following species: Dipodomys ordii, Peromyscus maniculatus, Reithrodontomys megalotis, Onychomys leucogaster, and Neotoma lepida. The most numerous animal in all plots …

The Visceral To Skin Temperature Gradient In Restraint Hypothermia, Glenn L. Foster

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included]

Summary: The effects of restraint on skin, subcutaneous, and deep visceral temperatures of rats exposed to environmental temperatures of 0°C, 8°C, 16°C, and 28°C are determined. The temperature gradients of restrained and unrestrained rats at 0°G are compared.

From the data presented, it is felt that one factor in the thermolability of restrained animals is an increased heat loss. There is also evidence suggesting a decreased metabolic rate, the chemical nature of which is unknown Which of these two factors plays the greater role is yet to be determined.

Avian Erythrocyte Receptor Substance For The Natural Hemolysin In Rat Serum, Richard Vincent Johnson

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract not included]

[Signature page not included]

Separation Of Carbon From Deinking Waste By Means Of Flotation, Lester R. Beeman

Paper Engineering Senior Theses

The technique of froth flotation, as practiced in the separation of mineral ores, has been applied to the separation of carbon black from the deinking waste of the paper industry.

On the theory that carbon black (from ink) has a positive charge in water, and clay and cellulose fibers have negative charges in water, experiments were of two types. First, it was attempted to float the carbon from the clay and cellulose fibers. Second, it was attempted to float the clay and cellulose fibers from the carbon.

Several possible formulas were found for separating carbon black from deinking waste. Favorable …

Measurement Of The Degree Of Cellulose Degradation Caused By Fungi, Ronald C. Morgan

Paper Engineering Senior Theses

The objective of this thesis is to obtain a method for determining the degree of cellulose degradation, caused by fungal attack, using testing methods commen to the paper industry rather than complex biochemical testing procedures.

Supercalender Variables (Iii) The Effects Of Static Pressure And Rolling Pressure On Paper, Donald V. Martin

Paper Engineering Senior Theses

This thesis is the third in a series of fundamental investigations of the variables of supercalendering. The variables studied in this thesis are the internal effects derived from rolling pressure and of static pressure on paper. These variables were investigated by testing four grades of paper after being subjected to supercalendering and comparing them with similar grades pressed by a hydraulic press. The experimental results show that a definite comparative trend in the internal effects of paper were established between the rolling pressure caused by supercalendering and static pressure given by a hydraulic press. The physical properties tested were Mullen, …

The Bonding Of Felted Glass Fibers By The Use Of Ordinary Papermakers' Wet-Strength Resins, Kenneth C. Rasmussen

Paper Engineering Senior Theses

Papermakers' wet-strength resins have been added to felted glass fibers as to increase the strength of the fibers.

On the basis that a stronger sheet of paper made from glass fibers could be put to many uses, experiments were of two types. First, an excess of wet-strength resins were added to the fibers. Second, handsheets made of one hundred per-cent glass fibers were dipped into a two per-cent resin tub-sizing solution.

Favorable results were obtained in both cases.

The Effect Of Various Deinking Solutions And Concentrations Upon The Strength Of Fiber, Leonard J. Timmer

Paper Engineering Senior Theses

Preliminary investigation produced limited information on the effect of various deinking solutions and concentrations upon the strength of fiber. Experimentation indicated that deinking does have a destructive effect upon the strength of fiber. This effect correlates to the temperature and the amount of chemical used. Also indicated is the fact that a mixture of Sodium hydroxide and Sodium carbonate has less of a destructive effect than either of these alone.

A Study Of The Various Stages Of Corn Foliage And Their Scale Preventing Abilities In Sea Water Evaporators, Arthur J. Rehberger

Bachelors’ Theses

Previous work carried out at Marquette University has proved that seawater evaporator scale can be prevented if such things as dehydrated alfalfa foliage or dehydrated corn, oats, pea and grass foliage are added to the feed seawater.

The object of this work is to determine if the scale preventing ability of corn foliage varies with the maturity of the plant from which it is stripped. Also if the proven scale preventing ability of mature corn foliage changes while it is stored.

A Study Of Spermatogenesis In The Charales, Robert Korn

Bachelors’ Theses

Investigations on the nature of the antherozoid, or male gamete, in the Archegoniates has been of great cytological interest to numerous workers. An apparent consistency of certain characteristics in the antherozoids of the Bryophytes and the Pteridophytes has, also, undoubtably been of value in determining phylogenic relationships.

A Study Of The Families Of Utah Hemiptera, Gerald L. Nielsen

Theses and Dissertations

This study determines the number of families of Hemiptera found in the state and has a key for their classification. The characteristics and general distributions of each family are given, along with specific examples of the most common and economically important bugs. Important references are given for each family of work done to date. It was found that there have been twenty-eight families of Hemiptera collected in Utah, some of which are well represented in numbers of genera, species, and individuals, while others are represented by a single species and collected in only one or two places in the state.

An Ecological And Distributional Study Of Small Mammals Of Cedar Valley, Utah County, Utah, Loraine Woodbury

Theses and Dissertations

This paper deals with the ecology and distribution of small mammals in the following plant communities of Cedar Valley, Utah: juniper, greasewood, grass-rabbitbrush, and shadscale. Study periods were in August 1950 and 1951, October 1951, and April 1952 with each community studied 1,440 trap-nights. A combination of the Calhoun ''B" and transect method was employed; plant species and densities were taken and soil samples were checked for moisture content, total soluble salts and mechanical analysis. In the communities studied Dipodomys ordii utahensis (Merriam) is found in greatest abundance on sandy soil and Perognathus parvus olivaceus (Merriam) is found in greater …

Respiration, Succinoxidase And D-Amino Acid Oxidase Studies On Livers From Rats Fed The Hepatic Carcinogens 4-Dimethylaminoazobenzene (Dab) And 3(1)-Methyl-4-Dimethylaminoazobenzene(3(1)-Me-Dab), Donald R. Richmond

Biology ETDs

In 1933, Japanese workers produced liver cancer in rats by feeding o-amino-azo-toluene (cited by Rusch, et al. 1945, p.267). The carcinogenecity of the azo dyes became especially important since the incidence of these liver tumors varied profoundly with the composition of the diet in which it was given. Similar variations due to the diet had not been orbserved with the types of carcinogens. From further studies, in which known compenents were added to purified diets, both protective (anticarcinogenic) and augmenting (procarcinogenic) influences could be ascribed to individual components.

The Minimal Nutritional Requirements Of Several Strains Of Shigella Dysenteriae 1, Roy M. Johnson

Biology ETDs

The study of bacterial nutrition is fundamental to an understanding of the physiological aspects of microorganisms. The advances made in biochemical research during the past few decades have permitted the employment of synthetic media for a large number of microorganisms previously able to grow only on complex, ill-defined media. In turn, microorganisma have become a valuable tool of the biochemist for the assay of vitamins and growth factors. These combined efforts of the biochemist and the microbiologist have advanced the entire field of physiology applicable to all organisms.

A Study Of The Pseudoscorpions Of The Mississippi River Drainage Basins, Joan Elizabeth Bolsterli

Biology ETDs

The purpose of the present study is to obtain information relative to the taxonomy, geographical distribution, and ecology of the pseudoscorpions of the Mississippi River drainage basin, with the exception of areas of headwater tributary streams. The present study is geographically restricted to the area bounded on the west by North Dakota, Kansas, and Oklahoma and on the east by Ohio, Kentucky, and Tennessee, and ranges from the Canadian border on the north to the Gulf of Mexico on the south.

Studies On The Evaluation Of The Concentration Exponent Of Benzalkonium Chloride, John P. Davanzo

Biology ETDs

In recent years many have come to believe in the exponential function of the concentration of a disinfectant to be a reliable index in evaluating the germicidial effect of that compound.