Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Life Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 155461 - 155490 of 159479

Full-Text Articles in Entire DC Network

Whole Issue Nebraska Bird Review (June 1970) 38(2) Jun 1970

Whole Issue Nebraska Bird Review (June 1970) 38(2)

Nebraska Bird Review

TABLE OF CONTENTS

Dragonfly Migrations Observed in Nebraska in 1969 ..................22

Sandhill Cranes ..................23

The Sixty-ninth Annual Meeting ..................26

1969 (Twelfth) Fall Occurrence Report ..................27

Notes ..................40


The Prairie Naturalist Volume 2, No.2 June, 1970 Jun 1970

The Prairie Naturalist Volume 2, No.2 June, 1970

The Prairie Naturalist

EDITORIAL: Ecocide on the Sheyenne? ▪ Paul B. Kannowski

NEW RECORDS OF VASCULAR PLANTS IN NORTH DAKOTA ▪ Robert E. Stewart

SOME LOCAL NATIVE PLANT LOSSES AND SOME SAL V AGE ▪ O. A. Stevens

CHRISTMAS BIRD COUNTS IN NORTH DAKOTA ▪ Robert N. Randall

ENVIRONMENTAL DESIGN IN COMMUNITY PLANNING ▪ Cameron Man

DISTRIBUTION OF THE SCIRPUS VALIDUS COMPLEX IN NORTH DAKOTA ▪ Richard L. Ward


Immunologic Status Of Uremic Patients, Gerald A. Logrippo, C. E. Rupe, Hajime Hayashi, Dean Lesher Jun 1970

Immunologic Status Of Uremic Patients, Gerald A. Logrippo, C. E. Rupe, Hajime Hayashi, Dean Lesher

Henry Ford Hospital Medical Journal

The immunologic status of 25 uremic patients was studied with a battery of tests evaluating the humoral and cytological aspects of immunity. The individual's humoral immune status was evaluated as follows: quantitation of the three major serum immunoglobulins (IgG, IgA and IgM) expressed in mg/100 ml of serum and compared to established normal clinical standards (±2 SD/mean); qualitation of IgG and IgM evaluated by specific virus antibody titers and antitoxin values associated with IgG and by isoagglutinin tilers of the ABO blood groups associated with IgM. Immunoglobulin status is grouped into hyper- and hypo-immunoglobulin variations from normal and correlated with …


Hfh In The News Jun 1970

Hfh In The News

Henry Ford Hospital Medical Journal

No abstract provided.


Front Matter, Vol. 11 No. 2 Jun 1970

Front Matter, Vol. 11 No. 2

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


End Matter, Vol. 11 No. 1 Jun 1970

End Matter, Vol. 11 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


Genetic And Metabolic Controls For Sulfate Metabolism In Neurospora Crassa: Isolation And Study Of Chromate-Resistant And Sulfate Transport-Negative Mutants, George A. Marzluf Jun 1970

Genetic And Metabolic Controls For Sulfate Metabolism In Neurospora Crassa: Isolation And Study Of Chromate-Resistant And Sulfate Transport-Negative Mutants, George A. Marzluf

Biological Sciences Faculty Research and Publications

Mutants of Neurospora resistant to chromate were selected and all were found to map at a single genetic locus designated as cys-13. The chromate-resistant mutants grow at a wild-type rate on minimal media but are partially deficient in the transport of inorganic sulfate, especially during the conidial stage. An unlinked mutant, cys-14, is sensitive to chromate but transports sulfate during the mycelial stage at only 25% of the wild-type rate; cys-14 also grows at a fully wild-type rate on minimal media. The double-mutant strain, cys-13;cys-14, cannot utilize inorganic sulfate for growth and completely lacks the capacity to …


The Enzymatic Oxidation Of Aldehydes By Xanthine Oxidase, Duane Beal Gregory Jun 1970

The Enzymatic Oxidation Of Aldehydes By Xanthine Oxidase, Duane Beal Gregory

All Master's Theses

As early as sixty years ago, the existence of an enzyme from mammalian tissues which catalyzed the oxidation of xanthine and hypoxanthine was recognized. The name given the enzyme was derived from its earliest recognized action, hence xanthine oxidase. Although little is known about the biological functions of the enzyme, the high affinity shown for xanthine and hypoxanthine may indicate that these are the most significant substrates biologically.


The Ashy Petrel, Oceanodroma Homochroa, At Its Breeding Grounds On The Farallon Islands, California, Elden Aldis James-Veitch Jun 1970

The Ashy Petrel, Oceanodroma Homochroa, At Its Breeding Grounds On The Farallon Islands, California, Elden Aldis James-Veitch

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract not included]

Introduction:

The Farallon Islands are given as the type locality for the Ashy Petrel, Oceanodroma homochroa (Coues, 1864). Little of its biology has been studied, as information in the past has been limited to short period observations by visitors to off-shore islands along the California coast. Visitors of note were Cooper (1868), Bryant (1888), Blankinship (1892), Barlow (1894), Kaeding (1903), Emmerson (1904), Dawson (1911), Howell (1917 a and b), Loomis (1918), Thoresen (1960), and Bowman (1961).

The aim of this investigation is to provide a more detailed examination of the Ashy Petrel's breeding biology on the Farallon …


Calorigenic Effects Of Thyroxine And Triiodothyronine On Rat Diaphragm., Robert Lee Chambers Jun 1970

Calorigenic Effects Of Thyroxine And Triiodothyronine On Rat Diaphragm., Robert Lee Chambers

Theses and Dissertations

Since the isolation of triiodothyronine (T3) by Pitt-Rivers and Gross (1953) several questions as to its role as a thyroid hormone arose. Does T3 have the same or different actions than that of thyroxine (T4 )? Is T3 an emergency hormone, since its synthesis relative to T4 is greatly increased during periods of low iodine intake and its response time is I/5th that of T4 (Ackerman and Arons, 1958)? Are there any interactions modifying their respective actions?


Review Of Die Infloreszenzen: Typologie Und Stellung Im Aufbau Des Vegetationskorpers. Zweiter Band. 1 Teil, By Wilhelm Troll. Gustav Fischer, Jena, 1969, Robert B. Kaul Jun 1970

Review Of Die Infloreszenzen: Typologie Und Stellung Im Aufbau Des Vegetationskorpers. Zweiter Band. 1 Teil, By Wilhelm Troll. Gustav Fischer, Jena, 1969, Robert B. Kaul

School of Biological Sciences: Faculty Publications

Review of Die Infloreszenzen: Typologie und Stellung im Aufbau des Vegetationskorpers. Zweiter Band. 1 Teil, by Wilhelm Troll. Gustav Fischer, Jena, 1969.


Front Matter, Vol. 11 No. 1 Jun 1970

Front Matter, Vol. 11 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


An In Vivo Perfusion Apparatus For Studies On Gingival Disease In The Albino Rat : Assessment By A Perfusion Of The Enzymes Collagenase And Hyaluronidase, James A. Smith Jun 1970

An In Vivo Perfusion Apparatus For Studies On Gingival Disease In The Albino Rat : Assessment By A Perfusion Of The Enzymes Collagenase And Hyaluronidase, James A. Smith

Loma Linda University Electronic Theses, Dissertations & Projects

This thesis describes an in vivo perfusion apparatus which can continuously deliver controlled quantities of solutions to localized, contralateral intraoral areas in albino rats. Three animals were per fused on the experimental area (the mesial sulcular area of the maxillary first molar) on one side with tap water and Trypan blue. Localization of the solution delivered and minimal histological changes due to the presence of the apparatus was demonstrated on these animals. Solutions of .5%, 1%, and 2% hyaluronidase and collagenase were perfused on the experimental areas of nine animals. When both enzymes were used, hyaluronidase always preceded collagenase in …


Ecological Distribution Of Spiny Lizards (Sceloporus) In Big Bend National Park, Texas, Teddy L. Brown May 1970

Ecological Distribution Of Spiny Lizards (Sceloporus) In Big Bend National Park, Texas, Teddy L. Brown

Biology ETDs

The ecological distribution of the four species of spiny lizards (Scelouorus) occurring in Big Bend National Park, Texas, was studied in the summers of 1968 and 1969. A total of 219 lizards was observed or collected by shooting with a pistol or rubber bands, by hand, and by use of can traps. The most abundant species was S. merriami (92 specimens observed or collected), second was S. poinsetti (63 specimens), third was s. magister (38 specimens), and least abundant was S. undulatus (26 specimens). Five general communities are described: Rio Grande flood­plain, desert scrub, desert grassland, pinyon-juniper-oak woodland, and ponderosa …


An Ecological Survey Of The Reptiles And Amphibians Of Chaco Canyon National Monument, San Juan County, New Mexico, Kirland L. Jones May 1970

An Ecological Survey Of The Reptiles And Amphibians Of Chaco Canyon National Monument, San Juan County, New Mexico, Kirland L. Jones

Biology ETDs

A general ecological description of Chaco Canyon National monument is presented. Plant associations are named and specific ecological factors limiting the distribution of the herpetozoa are described.

Field work at Chaco Canyon was carried out from 17 June to 1 September 1968. Data were gathered on the composition and distribution of plat association, reptiles, and amphibians. Field data gathered include plant and herpesian associates, physiographic areas, exposure, and substrata.

Distribution of plant associations was found to be correlated with the physiography. Distribution of lizards and amphibians was found to be correlated with substrate. Ecological factors which dictate the distribution of …


The Incidence Of Ichthyophthirius Multifiliis Fouquet 1876 In Fish From Two Freshwater Streams And Commercial Bait Shops Of Rowan County, Kentucky, Lois Irene Parsons May 1970

The Incidence Of Ichthyophthirius Multifiliis Fouquet 1876 In Fish From Two Freshwater Streams And Commercial Bait Shops Of Rowan County, Kentucky, Lois Irene Parsons

Morehead State Theses and Dissertations

A thesis presented to the faculty of the School of Sciences and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Lois Irene Parsons on May 14, 1970.


Studies On The Antigenic Relationships Of Pollen Extracts From Atriplex Canescens, Atriplex Wrightii, And Atriplex Lentiformis, Andrew Paquet Jr. May 1970

Studies On The Antigenic Relationships Of Pollen Extracts From Atriplex Canescens, Atriplex Wrightii, And Atriplex Lentiformis, Andrew Paquet Jr.

Biology ETDs

Saline extracts, prepared from the pollens of three species of Atriplex: A. canescens, A. lentiformis, and A. wrightii, were sterilized by Seitz filtration, and the nitrogen content of each extract was determined by the Kjeldahl technique. Extracts were standardized at 0.7 mg N/ml, mixed with an equal volume of Freund's complete adjuvant, and injected subcutaneously into rabbits. Antibody titers were checked weekly by the interfacial precipitin test. The peak antibody production occurred four to five weeks after the injection period, then after a slight drop in titer, remained stable for the next six weeks, during which time sera were collected. …


A Survey Of The Helminth Parasites And Coccidia Of Cattle And Sheep In Utah Valley, Joseph Carl Fox May 1970

A Survey Of The Helminth Parasites And Coccidia Of Cattle And Sheep In Utah Valley, Joseph Carl Fox

Theses and Dissertations

A survey of gastro-intestinal parasites in cattle and sheep in Utah Valley was conducted. Cattle in the valley were not seriously parasitized by helminths, whereas sheep usually had heavy helminth infections. Ten genera of helminths and 8 species of coccidia were identified in cattle in the valley, and 14 genera of helminths and 8 species of coccidia were identified in sheep. In conjunction with the survey, meteorologic studies were conducted May through September, 1909, to ascertain the effects which irrigation had upon micro-environments on grass pastures in relation to the development of free-Iiving stages of gastro-intestinal nematodes of ruminants. The …


Ultrastructure Of The Chorionic Villi In The Term Baboon (Papio Sp.) Placenta, Carol Ann Baker May 1970

Ultrastructure Of The Chorionic Villi In The Term Baboon (Papio Sp.) Placenta, Carol Ann Baker

Theses & Dissertations

The purpose of this paper is to describe the ultrastructure of the chorion frondosum of the baboon fetal placenta at or near term gestation. There is a void or, at best, only limited ultrastructural information in almost all fields of the biological sciences. The area of placentation is no exception. Since the ultimate goal of many scientific endeavors is the contribution to the vital field of human health, this investigator feels that much information can be gained through the utilization and study of the nonhuman primates in scientific research. The baboon (Papio sp.) has been shown to be quite similar …


Natural Sovereignty On The High Seas, Thomas Arthur Marnane May 1970

Natural Sovereignty On The High Seas, Thomas Arthur Marnane

Marine Affairs Theses and Major Papers

The purpose of this paper is to examine a current dispute involving resources in the sea, determine the issues involved, and hypothesize a solution. Specifically, the dispute chosen involves Latin American claims to extensive sovereign fishery rights in adjacent coastal waters and objections to these claims. The United States and the parties to a declaration made in Santiago, Chile, in 1882, Chile, Ecuador, and Peru, have been chosen as most representative of the opposing positions. The International Court of Justice, primarily utilizing as a framework for analysis the dicta, findings, and opinions in their February 1969 Judgment in the North …


Growth Of Staphylococcus Aureus On Two Selective Media With Special Reference To Cultural Techniques For Growing S. Aureus On Selenite Egg Yolk Agar, Karren Littell May 1970

Growth Of Staphylococcus Aureus On Two Selective Media With Special Reference To Cultural Techniques For Growing S. Aureus On Selenite Egg Yolk Agar, Karren Littell

Masters Theses & Specialist Projects

An X-ray diffraction powder photograph shows a series of lines for each of which a measurement can be made and transformed into the interplanar d value (15). Lines were obtained by the analysis of precipitates from BP plates, but no lines could be obtained from the precipitate collected from SeEy plates even when the sample was exposed to the X-rays for a 20-hr period. The lines from the tellurite sample provided d values that corresponded to neither any known tellurium compound nor to elemental tellurium. These results do not agree with those of many investigators (1, 6, 11, 19, 22) …


Some Effects Of L-Thyroxine On Lipid Deposition During Alcohol Administration, John Marcum May 1970

Some Effects Of L-Thyroxine On Lipid Deposition During Alcohol Administration, John Marcum

Masters Theses & Specialist Projects

The experimental procedure described in this thesis consisted of a quanitative lipid analysis, a standard measurement of oxygen consumption, and determinations of fresh liver weight, and total body weight. The lipid analysis involved tissue extraction in a Soxlet apparatus (Rawat and Roy, 1958). The oxygen consumption measurements were made using a small animal respirometer, and fresh liver weights and total body weights were determined with an Ainsworth-Type-I0N analytical balance.


Description And Seasonal Variation In Incidence Of A New Species Of Myxosporidian Parasite (Class Myxosporidea) Of The Bluegill Sunfish, Lepomis Macrochirus Rafineque, In Kentucky, Stephen Bayes Crider May 1970

Description And Seasonal Variation In Incidence Of A New Species Of Myxosporidian Parasite (Class Myxosporidea) Of The Bluegill Sunfish, Lepomis Macrochirus Rafineque, In Kentucky, Stephen Bayes Crider

Masters Theses & Specialist Projects

A new histozoic myxosporidian parasite (Class Mysoxporidea), Myxobolus meglitschi sp. nov., infecting young-of-the-year and yearling bluegill sunfish, Lepomis macrochirus Raf., from Shanty Hollow Lake, Warren County, Kentucky was described. Phenology was investigated from January 20 to December, 1969.

The magnitude of infection varied seasonally in bluegill. Incidence was highest in July and August (43.92) in host populations, declining, but not disappearing from September to December 20, 1969. The infection exhibited a yearly mean incidence of 22.318.

The pattern of distribution of cysts on hosts varied seasonally. During periods of low incidence cysts were confined primarily to a postanal area below …


Agricultural Experiment Station News May 1970 May 1970

Agricultural Experiment Station News May 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
MULTIDISCIPLINE RESEARCH
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – May 1970
BULLETINS PRINTED


Teaching Plans In Range Management For Utah High School Vocational Agricultural Programs, Jack A. Soper May 1970

Teaching Plans In Range Management For Utah High School Vocational Agricultural Programs, Jack A. Soper

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Although several course of study outlines have been prepared to cover the subject of range management, the author has been unable to use them too effectively in teaching this important phase of vocational agriculture. Other teachers of vocational agriculture have expressed similar experiences and in group meetings have indicated a need for more teaching materials in range management and other important areas of agriculture.

Panguitch, Utah, where the author teaches, is located in Garfield County in the heart of a vast range area . There is a vital need for youth ar.d adults in the area to understand the important …


The Influence Of Trace Elements On Anemia, Yung-Fun Wang May 1970

The Influence Of Trace Elements On Anemia, Yung-Fun Wang

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The fact that anemias constitute an important problem of public health has been realized only comparatively recently. When field surveys made in different countries before and after World War II had collected a great deal of information on dietary habits, food consumption levels, and nutritional status , it became more apparent that mild, moderate, and even severe anemic states existed in different communities. As was to be expected, anemia occurred more frequently in the malnourished people in the developing countries and the vulnerable groups of the population were the most affected (FAO/WHO Report, 1966).


The Ias Bulletin, V4n3, May 1970, Iowa Academy Of Science May 1970

The Ias Bulletin, V4n3, May 1970, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Officers, Directors, and Section Chairmen, 1970-71
--- 82nd Facts and Figures
--- Section Attendance
--- New Constitution Adopted
--- Concerning the Dues Increase
--- Abstracts Available
--- Election Results
--- New Standing Committees
--- New Proceedings Policies in 1971
--- Annual Report
--- New Members Since March


An Application Of Statistical Decision Theory To Farm Management In Sevier County, Utah, Suwaphot Lakawathana May 1970

An Application Of Statistical Decision Theory To Farm Management In Sevier County, Utah, Suwaphot Lakawathana

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The major purpose of this study is to present selected empirical results of a study employing decision-making theory as a framework for considering decision making under risk. The particular problem involves choices between alternative crop rotations for Sevier County farmers. The study demonstrates the usefulness of the Bayesian theory that gives more than a point estimation.

A multiple regression model using two linear terms was employed to determine the influence of snow pack and reservoir storage on water availability for irrigation purposes during July, August, and September.

The Bayesian approach was employed. The optimal action or decision was first determined …


The Annual Demography Of A Population Of Antelope Ground Squirrels In Curlew Valley, Utah, James R. Kitts May 1970

The Annual Demography Of A Population Of Antelope Ground Squirrels In Curlew Valley, Utah, James R. Kitts

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The annual demography of a population of antelope ground squirrels in Curlew Valley, Utah was studied by measuring population density, natality, and mortality. Capture- recapture techniques yielded lower estimates than the Hayne strip- census. The estimates suggested 1968 was a year of population decline.

One hundred seventy- three squirrels were collected and autopsied to obtain sex ratio, age structure, natality, and mortality data. The seasonal sex ratios for adult and yearling squirrels showed 82 percent females in spring 1968, this gradually changed to 56 percent by winter. The seasonal sex ratios of the young squirrels showed 59 percent females upon …


Seed Response Under Snow On A Subalpine Range In Central Utah, Alvin T. Bleak May 1970

Seed Response Under Snow On A Subalpine Range In Central Utah, Alvin T. Bleak

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The response of grass, forb, and shrub seeds to the subalpine environment during the fall and under winter snow and under laboratory conditions at 20/28 C was observed for 3 consecutive years at an elevation of about 3000m on the Wasatch Plateau in central Utah.

Seeds in nylon sleeves were planted under 2 cm of soil before snowfall. Under snow plantings were made directly on the soil surface and under 2 cm of soil. The seeds planted before snowfall were removed each year on four occasions: when under snow plantings were made, after snow depth exceeded 130 cm (deep snow), …