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Studies On The Translocation Of Systox In The Cotton Plant And Its Effect On The Cotton Aphid, Spider Mite, And Some Of Their Predators., Mostafa Kamal Ahmed

LSU Historical Dissertations and Theses

No abstract provided.

Relationships Between The Stomach Wall Of Mosquitoes And The Exogenous Development Of Malaria., Augustus Burns Weathersby

LSU Historical Dissertations and Theses

No abstract provided.

Certain Effects Of Electrolytic Lesions In The Hypothalamus On The Mating Behavior Of The Golden Hamster., George Van Sickel White

LSU Historical Dissertations and Theses

No abstract provided.

Biological Factors Involved In The Absenteeism Of Children From Stockton Public Schools, Fae-Belle Coudeyre

University of the Pacific Theses and Dissertations

Every state has a compulsory school attendance law, and yet at any time during the school year approximately 12 percent of the children will not be in school - cannot very well be in school, because of some physical, mental, or emotional handicap, either temporary or permanent.

These absentees are what are now often called the “exceptional” children, including the blind and partially-blind, the deaf and hard-of-hearing, the speech-defective, the crippled, the delicate, the epileptic, the mentally deficient, those with serious social maladjustments, together with those who are temporarily out of school because of a disease or accident. The total …

Biological Studies On The Miracidia Of Paramphistomum Microbothrioides, Price And Mcintosh, And Its Intermediate Snail Host, Stagnicola (Nasonia) Cubensis, Pfeiffer., Buford Earl Prince

LSU Historical Dissertations and Theses

No abstract provided.

The Effects Of Phosphorus-32 On The Larval Stages Of Paramphistomum Microbothrioides., Thomas Byrnes Weber

LSU Historical Dissertations and Theses

No abstract provided.

Biological Oxidation Of Copper Sulfide Minerals, Delmar Boyd Davis

Theses and Dissertations

This work represents a study of the biological oxidation of copper sulfide minerals. The principal objective of the study was to determine the extent of bacterial oxidation on copper containing sulfide minerals. It was also desired to determine if the bacteria could oxidize copper sulfides in the absence of iron. A better understanding of the nitrogen requirements of the organisms was desired. Minerals used in this study were Bingham Canyon Float Concentrate, chalcopyrite, covellite, calcocite, bornite, tetrahedrite, and reagent grade copper sulfide. The bacteria used were obtained from the mine waters of Bingham Canyon, Utah. To study the problem the …

The Biology Of A Leafcutter Bee (Megachile Brevis) And Its Associates, Charles D. Michener

Mc

No abstract provided.

Kentucky Warbler (Vol. 29, No. 4), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Distribution Of The Barnacle Chthamalus Dalli Pilsbry At Cabrillo Point, Monterey Bay, California, William B. Stallcup

Field and Laboratory

In this work, I tried to learn the vertical distribution of Chthamalus dalli in the Monterey Bay intertidal zone, and its distribution in such areas as receive, or are protected from, wave impact.

Effects Of Weather-Condition On The Turtle Creek Plankters Near Dallas, Texas, Stanton J. Erickson

Field and Laboratory

An annual temperature cycle exists in fresh waters. This cycle, associated with periods of winter and summer stagnation, and spring and fall turnover, is governed by the addition and loss of heat. The amount of heat (in gram-calories) needed to raise the water temperature from its winter minimum to its summer maximum, is known as the "annual energy" or "heat budget." The heat-gain occurs in the spring, and effects spring-turnover; the heat-loss occurs in the fall, and effects fall-turnover. Over a period of years, the heat gained equals the heat lost (Allee 1939.) Plankters in their life cycles also exhibit …

Bulletin No. 363 - Butyl Fabrics As Canal Lining Materials, C. W. Lauritzen, W. H. Peterson

UAES Bulletins

The most important prerequisite of linings for controlling seepage losses from irrigation canals is their watertightness. In addition to being watertight, a lining must be relatively durable if it is to be economical. Rigid materials provide satisfactory linings for canals with well-drained and stable subgrades. Under other conditions, where expansive soils are encountered and ground water is a problem, a rigid lining such as concrete is not durable. Considering the many factors that govern the utility and durability of linings, the ideal lining would consist of a material with some flexibility, a material resistant to erosion and mechanical damage, and …

Whole Issue Nebraska Bird Review (October 1953) 21(4)

Nebraska Bird Review

Published quarterly in January, April, July, and October by the Nebraska Ornithologists' Union as its official journal and sent free to all members who are not in arrears for dues. Subscriptions at $3.50 per volume in the United States and $3.75 in all other countries, payable in advance. Single numbers, $1.00 each. All dues and subscriptions should be remitted to the Treasurer, Mrs. F. J. Patton, Blue Springs, Nebraska. Orders for back numbers should be sent to the Custodian, Miss Mary Lou Hanson, University of Nebraska State Museum, Lincoln, Nebraska. All manuscripts for publication should be sent to the Editor, …

Back Matter

Henry Ford Hospital Medical Journal

No abstract provided.

Kentucky Warbler (Vol. 29, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

The Skeletal Anatomy Of Several Species Of Salamanders With Special Reference To Bolitoglossa Rufescens (Cope), Afton M. Hansen

Theses and Dissertations

This paper deals with the complete skeletal anatomy ot Bolitoglossa rufescena (Cope). All parts are figured and described. In addition to this many of the main skeletal parts of Bolitoglossa platydactyla (Cuvier) Bolitoglossa occidentalis Taylor, and Bolitoglossa flaviventris (Schmidt) are described and figured. A comparison of the following parts of the above mentioned salamanders is presented: skull, atlas, ninth trunk vertebra, sixth caudal vertebra, carpals, tarsals and digits. The similarities and differences are pointed out as they appeared to the author. The relationship and specialization ot these species is discussed rather briefly.

On The Status Of Some Arctic Mammals, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The mammal fauna of arctic Alaska is comprised of about thirty species, most of which are widely distributed. A few of these are essentially nearctic species, having extended their range northwestward during post-Pleistocene time. The majority, however, consists of forms which are either circumboreal in their distribution, or which have closely-related palearctic counterparts-considered specifically distinct hy most North American mammalogists. Sorne of the foremost Old World workers, however, do not agree that Bering Strait constitutes a barrier which effectively separates the Old World fauna from the New.

Studies On The Helminth Fauna Of Alaska. Xiii. Disease In The Sea Otter, With Special Reference To Helminth Parasites, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

During the spring of 1951, the U. S. Fish and Wildlife Service undertook the removal of sea otter, Enhydra lutris (L)., from the Aleutian Island of Amchitka, for the purpose of restocking range from which the animals have long been exterminated. The decision to undertake this activity was influenced by the nature of military operations planned for the island later the same year. The capture and removal of the otter were under the supervision of Mr. Robert D. Jones, Biologist, U. S. Fish and Wildlife Service. Heavy losses among the animals shortly after capture made the venture unsuccessful. Many deaths …

A Cytotaxonomic Study Of New Mexico Thelesperma, Andrew Marion Torres

Biology ETDs

This study has been an attempt to collect, to identify, and to classify the four New Mexico species of Thelesperma on the basis of morphology and chromosome number. In addition, an attempt has been made to analyze the morphology of the chromosomes with respect to their evolution.

Ecological Observations Upon The Fresh-Water Sponges In Dallas County, Texas, E. P. Cheatum, Joseph P. Harris Jr.

Field and Laboratory

Published distributional and ecological data on the fresh-water sponges of Texas are meager. Besides Marcus Old's (1936) report on sponges collected by us the only other published report for this region is a description of Asteromyenia plumosa by Weltner (1895) from McKinney, Collin County, Texas. Dr. Old reported Spongilla fragilis from a small pond 1½ miles west of Dallas, and from Parson's Slough near Seagoville in Dallas County; Trochospongilla horrida from Elm Fork of the Trinity River, Dallas County; Asteromyenia plumosa from White Rock Lake, Dallas; and Ephydatia crateriformis from the East Fork of the Trinity River in Rockwall County. …

A Preliminary Study Of The Effect Of Thyroxin On The Transport Of Glucose Across The Tubule Cells Of The Dog Kidney, Hayle Buchanan

Theses and Dissertations

The graduate studies of the writer began at Brigham Young University in the Autunm of 1951, at which time he filed his intention of majoring in Zoology and minoring in Chemistry. During the first three quarters he received instruction under his committee chairman in a sequence of courses entitled: "Body Fluids", "Neurology", and "Endocrinology". During the first of these three courses the role of the kidneys in the maintenance of a relatively constant internal environment was discussed. During the course in Endocrinology the following statement was found in the text which suggested that the thyroid hormone might have an influence …

The Spermatheca As A Taxonomic Aid In The Study Of Some Families Of Coleoptera, Lenord Daniel Moore

Theses and Dissertations

In this study, the spermathecae of sixty-eight species of Coleoptera, representing fifty-one genera and twenty-three families, were examined and are listed in the order they appear in Leng's Catalogue of the North American Coleoptera. An examination was made of ninety-five specimens of four different species to check for variation within the species. In only one species was there a departure from the pattern characteristic of the genus. Ther spermatheca is differentiated into the cornu, the nodulus and ramus. It is a sac in the female for the reception and storage of the spermatozoa until used for fertilizing the eggs. Among …

Some Chernetid Pesudoscorpions From Mexico, Harold T. Neuberger

Biology ETDs

Included in the collection of chernetid pseudoscorpions from the American Museum of Natural History were found several individuals representing the species and records described herein as new. Much of the present material was taken from collections made by Clarence and Marie Goodnight in the central Mexico. After publication of data in the thesis, the specimens will be returned to the permanent collections of the American Museum of Natural History.

The Interrelation Of The Adrenal And Posterior Pituitary Glands In Water And Electrolyte Metabolism, Frederic A. Giere

Biology ETDs

The secretions of the adrenal medulla account for many of the instantaneous responses of the animal body to various stimuli, but it has not been established that such secretions play any significant role in the endocrine regulation of salt and water metabolism. On the other hand, it has been established that the adrenal cortex and the antidiuretic hormone of the posterior pituitary are intimately involved in such processes. Certain compounds of the amine type, among which are the adrenal medullary hormone, do have a dramatic action on water diuresis; but it is questioned whether these substances are involved in the …

Radiosensitivity Of Mice In Relation To Heightened Metabolic Activity During And Immediately Prior To Exposure To 220 Kv X-Rays, M. Rosalie Henneke

Bachelors’ Theses

The manner in which certain factors influence the susceptibility of protoplasmic systems to ionizing radiations is not as yet well understood. Of prime importance among these factors is metabolic rate; it has been demonstrated that there exists a definite re­lationship between metabolic level and the lethal effects of such radiations. At the outset it must be pointed out that there are two principal problems in this connection; that is to say, radiosensitivity can be studied in relation to metabolic rate prevailing during or subsequent to exposure. One of the most frequently used criterion of radiosusceptability is mortality rate.

Isotomine Collembola From The Sandia Mountains Of New Mexico, Harold Scott

Biology ETDs

This paper records the first study of Collembola ever made in the Sandia Mountains and one of the first ever made in New Mexico even though the state presents excellent opportunities for study of this order. The Sandia Mountains are an ecologist’s paradise and it is probable that two hundred or more species of Collembola occur in this region alone. The entire state of New Mexico, possessing the extremes of elevation and the large geographical extent necessary to produce a great diversity of habitat types, probably contains nearly twice this number.

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

The Biological Sciences In The General Education Program, La Roy W. Zell

Journal of the Minnesota Academy of Science

No abstract provided.

Tree-Ring Dating, Waldo S. Glock

Journal of the Minnesota Academy of Science

No abstract provided.

The Hawk Path At Duluth, Pershing B. Hofslund

Journal of the Minnesota Academy of Science

No abstract provided.