Life Sciences Commons^™

Development Of Tissues Of Aesculus Hippocastanum, L., Robert E. Esser

Bachelors’ Theses

A few horse-chestnuts carried to the University one day in the fall as the nuts ripened, supplied some of the materials for this thesis. The work commenced at once with the gathering of a large supply of seeds. Attempts were made to reach the literature on the subject but failed, because, apparently there has been no work done on this plant in recent times as is shown by an almost complete absence of literature on the subject of the anatomy. Hence, nearly all references will be of a general nature.

A Cytological Study Of The Ciliated Epithelium Of Nucula Castrensis Hinds., Dorothy Blumer

Electronic Theses and Dissertations

Ever since the latter part of the 17th century, when ciliary movement was first observed, the study of ciliated cells has been of great interest to biologists, particularly to physiologists. In 1713 Leeuwenhoek recorded some observations he made on ciliary activity, using his primitive microscope. A knowledge of the structure and function of ciliated cells is also of importance in that branch of medicine pertaining to disorders of the respiratory passages and the movement of the ovum in the uterine tubes. The bivalve molluscs have come to be the classical example for the study of ciliated cells, both because of …

The Operating Efficiency Of The Albuquerque Sewage Disposal Plant From A Bacteriological Standpoint, Rebecca Jane Menaul

Biology ETDs

This study of sewage disposal plants has traced the development of sewage plants from an ancient and simple origin to the highly complex plants of today. Sewage was first disposed of by diluting the waste products into a large stream of water or by merely burying the sewage. As populations have increased, earlier methods have of necessity been discarded and a gradual evolution in the efficiency of methods of disposal has taken place, until today a modern plant may be operated in such a way as to leave the sewage free from all pathogenic bacteria and parasites.

Letter From I. C. Rogers To S. B. Simmons; Report Of William H. Gray, I. C. Rogers, William H. Gray

Documents

Letter from I. C. Rogers to S. B. Simmons, concerning reports. Letter encloses report of William H. Gray for his project program for the year 1937-1938.

Studies On Nutritional Muscular Dystrophy, I. Dietary Factors, Ii. Fibrosis And Lipomatosis Of Tissues, Violet Myrtle Wilder

Department of Biochemistry: Dissertations, Theses, and Student Research

dissertation published as three peer-reviewed papers:

Sergius Morgulis, Violet M. Wilder, and S. H. Eppstein. (September 1938). Further studies on dietary factors associated with nutritional muscular dystrophy. Journal of Nutrition 16(3): 219-227.

Howard C. Spencer, Sergius Morgulis, and Violet M. Wilder. (August 1937). A micromethod for the determination of gelatin and a study of the collagen content of muscles from normal and dystrophic rabbits. Journal of Biological Chemistry 120(1): 257-266.

Sergius Morgulis, Violet M. Wilder, Howard C. Spencer, and S. H. Eppstein. (August 1938). Studies on the lipid content of normal and dystrophic rabbits. Journal of Biological Chemistry 124(3): 755-766.

Regeneration Experiments With Planaria Maculata, Frank J. Tornetta

Biology Honors Papers

This 25 page thesis discusses experiments to determine the effect of temperature on the rate of regeneration in planaria and to find the comparative rate of growth of sagittal, transverse and oblique sections.

Present Day Concepts Of The Gene With Special Reference To The Salivary Chromosome Of Drosophila Melanogaster, Lola S. Reed

Biology Honors Papers

This 14 page thesis discusses the nature and function of the gene, including experimental work, chromosome banding, chromosome maps and methods of determination of gene loci.

Studies In Breaking The Rest Period Of Grass Plants By Treatments With Potassium Thiocyante And In Stimulating Growth With Artificial Light, Harold R. Shepherd

Master's Theses or Doctor of Nursing Practice

There has developed a need for a practical means of artificially breaking the rest period and of stimulating the growth of grasses so that sods can be procured early in the fall before freezing weather, brought into the greenhouse, and forced early to make an abundant vegetative growth. This need suggested the study of which this paper is the report, namely to discover whether or not the rest period of native grasses can be broken by treatment with potassium thiocyanate and their growth stimulated by artificial light supplemental to winter daylight.

Some Aspects Of The Physiology Of The Nephron, Christian Elwood Moser

Biology Honors Papers

This 31 page thesis examines the role of the nephron in kidney function.

A New Grackle Of The Cassidix Mexicanus Group, George H. Lowery Jr.

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.

The Accuracy Of Pressure Gauges Used On Household Steam Pressure Cookers, Arnold E. Baragar

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In the pressure cooker, high temperature is obtained by using steam under pressure. Since the pressure gauge is used as the indicator of temperature it is essential that the gauge register the correct pressure. Hence, this paper deals mainly with a study of the accuracy of both new and old pressure gauges used on steam pressure cookers. At the same time, four other phases were investigated: (1) the proper functioning of safety valves, (2) the various methods of sealing the lid to the cooker, (3) the proper evacuation of air from the cooker, and (4) the use of a thermometer …

North And South Dakota Horticulture, May 1938, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 11, Number 5

The Cowbird, O.A. Stevens
Newslants, H.A. Graves
Water, H.L. Hopkins
President's Corner, F.X. Wallner
Fruit Report, F.M. Schwab
Secretary's Corner, W.A. Simmons
Book Review, Mrs. F. Briley
Manitoba News Letter, W.R. Leslie
Beekeeper's Notes, J.A. Munro
Tree Planting, C.B. Waldron
Spring Survival, W.E.H. Porter

A Proposed Method For Classifying And Evaluating Soils On The Basis Of Productivity And Use Suitabilities, Arthur Anderson, A. P. Nelson, F. A. Hayes, I. D. Wood

Nebraska Agricultural Experiment Station: Historical Research Bulletins

It is the object of this paper to present a method for classifying and evaluating the soils as mapped in regular soil surveys on the basis of land types, which are here defined as areas having reasonably similar productivity and use suitabilities. The standards used to differentiate land types will vary according to the desired objectives, but any material difference in yield, or in practices necessary to maintain a desirable level of productivity will justify recognition of land types. The proposed procedure involves a more detailed study of the influence which soils, slope, erosion, and drainage have on specific crops …

The Anatomy Of The Musculature Of The Necturus, Carl Henry Zeuner

Bachelors’ Theses

This paper is intended to discuses the dissection and complete anatomy of the musculature of the Necturus. The Nacturus was chosen, as it is the most characteristic of the order Urodela and it shows many fish-lite adaptations. However, there are definite and distinct changes over the muscles of the fish. The Necturus has walking, legs requiring muscles between the individual parts of the limbs as well as between the limbs and the body itself as is the oase in the fish.

The Liver Of The Frog, Robert A. Grace

Bachelors’ Theses

The object of this paper is neither to contribute any new information, nor to criticize any work that has been done on the liver of the frog. The aim is merely to give a brief summary of the gross anatomy, the progress achieved in certain cytological fields, and the function of the liver in digestion and as a dietary factor. In doing this, the paper is intended to show the general trend of research which is apparent in current literature

The Blood Of The Frog, Leonard Gorenstein

Bachelors’ Theses

The circulatory system of the vertebrates is one of the most important found in the animal kingdom. The reason being that it carries food, oxygen, and hormones to all parts of the body and also removes all types of waste materials. this system involves a pump-like apparatus, called the heart, to which are attached tube-like vessels called arteries and veins. A liquid called a fluid-tissue circulates in this closed transportation system which is said to be closed in order to distinguish it from a semi-closed or open system in which a sinus or tissue cavity separates certain arteries and veins. …

Pituitary Gland Of Frog, Harold Joseph

Bachelors’ Theses

The endocrine or ductless gland system is one of the most important systems in the body of the vertebrates. The glands which comprise this system are the pancreas, which produces the insulin hormone; the thyroid, which secretes the throxin hormone; the parathyroid which produces the hormone known as the para-thormone; the adrenal glands which secretes cortin and adrenalin; the pineal gland about which very little is known; and the pituitary gland which produces many hormones, two of which, tethelin and pituitrin, are of great physiological importance. These hormones pass directly into the blood or lymph vessels and enter the circulatory …

Kidney Of The Frog, Felix Taubman

Bachelors’ Theses

The frog has been used exclusively in both high school and college as the main source of experimental biological and zoological studies. Because it is so easily obtained and so finely adapted to our purposes, we chose it as the specimen upon which to do our thesis work. Much has been done experimentally on the kidneys with the frog. The purpose of this thesis is to present a general view of the external and microscopic anatomy of the frog kidney and with this as a groundwork to present the problems of secretion; whether secretion is carried on by the renal …

Investigation Of The Proteolytic Power Of Soybean Brew Flakes Using The New Viscosimetric Method, Jon Kenneth Mccormick

Bachelors’ Theses

Progress along technical and scientific paths may be considered slow or rapid, depending upon the point of view taken. A survey of the artistic and technical achievements of the early Egyptians and Babylonians would lead one to believe progress to be rather slow. Yet, a consideration of the social scientific developments of the last century would lead one to deem progress as being very rapid. Unknown and perhaps unconsciously, progress is continually being made by that vast legion of unheralded scientists ·and technicians from which arise the notable authorities of the future.

Coloration In The Frog, Elizabeth Mary Pluck

Bachelors’ Theses

The color of an animal is by no means a matter of chance. It depends upon many factors, such as, the presence or absence of certain hormones within the body, the temperature of the animal's surroundings, the amount of light which is present, and certain chemical reagents with which the animal comes in contact. Animals have both color and coloration; and it is necessary to discriminate between the two terms. Color is associated with actual shades or hues as red, green, or yellow; whereas, the term coloration refers to the manner in which the individual colors are arranged into patterns.

A Study Of The Muscles Of The Arm And Upper Shoulder Of The Cat, Joseph Andrew Arena

Bachelors’ Theses

The work undertaken in this thesis is a study of the muscles of the shoulder and upper arm of the cat, special attention being paid to the origin, insertion, relations, action, innervation and blood supply of the muscles.

An Application Of Feulgen's Chromatin Stain To The Chromatin Material Of Sclerospora Graminicola, Elizabeth Annette Badalik

Bachelors’ Theses

Much work has been done up to the present time on the general staining of cells, but. the workers have been greatly limited in their attempts to stain one particular portion of a cell, such as the chromatin material, without staining the remaining portion of that same cell. The ideal stain should effect only the specified portion of the cell and the remaining portion which is not to be stained should remain stainless and void of color. There. has been a lack of reliable stain for differentiating the chromatin in the cytology of lower plants and Protista.

The Influence Of Commercial Soy Bean Lecithin On The Development Of Rancidity In Lard, Casper L. Berner

Bachelors’ Theses

The preservation of food products is a problem which has troubled manufacturers for many years. A variety of preservatives of a poisonous nature has been used in the past but with the coming of the Pure Food Laws, the use of such toxic preservatives has been prohibited and it has become of importance to discover substances that will prevent spoiling of foods but still be non-toxic. In recent years, the use of lecithin has been advocated as a preservative for fats. Although it is absolutely non-toxic, its suitability as a preservative has been questioned. It is the purpose of this …

Practical Study Of The Musculatuer Of The Cat, Jack Lamalfa

Bachelors’ Theses

The author has tried his best, in this thesis, to review, to dissect, and to make a comprehensive study of the muscles of the lower limb of the cat. With this end in view, he has taken the natural advantages present, such as text books, outlines, and charts as means of attaining it.

The anatomy of the cat’s muscles laid bare in dissection would be incomplete and inadequate without the aid of photographs and illustrations. So with the help of Charles Wilbur, B.S., a fellow student, the author succeeded in making some excellent views of the muscles of the lower …

The Anatomy, Physiology, And Histology Of The Musculature Of The Pelvic Appendages Of Rana Catesbiana, Wilfred F. Horner

Bachelors’ Theses

The muscles of the frog leg have been worked on very extensively during the last thirty-five years. The reason the frog has been subjected to such an extensive study in research is the fact of its striking resemblances to man and also the fact that they are plentiful and easy to work with in all types of experiments. The structures of a frog are well developed and prove very efficient for study.

This specific field of work was picked for this thesis because of the interest to the author, the mag­nitude of work done in the field, and the importance …

Collaidal Uranium. I. Toxicity, Arnold H. Maloney

College of Medicine Faculty Publications

No abstract provided.

The Feeding Value Of Certain Duck Food Plants Of The Bear River Migratory Bird Refuge As Determined By Chemical Analysis, Dale Clair Christensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The study of bird feeding problems has become a prominent factor in wild life management. This is true especially with respect to the evaluation of recently established migratory bird refuges. In 1929 the Federal Government assumed control of a large area of land located on the Bear River Bay of Great Salt Lake for the purpose of providing a sanctuary for water fowl. Dykes were built and the areas inside these dykes flooded with fresh water from Bear River. During subsequent years aquatic and marsh plants* developed abundantly and apparently have provided satisfactory feeding and nesting grounds for migratory birds. …

Biology Of The Green Soldier Bug, Acrosternum Hilaris (Say), At Farmington, Utah, Edward W. Anthon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was begun in June 1935, and continued up to and including the fall of 1937. The work was carried out at the Davis county Experiment Farm at Farmington, Utah, with some survey work also having been done in the central and northern parts of the state. This work was made possible through the cooperation of the Entomological and Horticultural Departments of the Utah Agricultural Experiment Station.

The green soldier bug, Acrosternum hilaris (Say), is also called the green stinkbug. Thomas Say was the first to describe this insect as belonging to the genus Pentatoma, but in some publications …

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.

Fifty-Second Annual Meeting Of The Iowa Academy Of Science And The Seventh Annual Convention Of The Junior Academy Of Science Of Iowa, April 15 And 16, 1938, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.