Digital Commons Network^™

Some Observations On Maccoa Duck Behaviour, Paul A. Johnsgard

Paul Johnsgard Collection

The recent comprehensive review of Maccoa Duck Oxyura maccoa biology by Clark (1964) has provlded the first detailed summary of the species' reproductive behaviour patterns and other aspects of breeding in this little-studied stiff-tail. It has been evident that the evolutionary relationships of the Maccoa Duck to the other southern hemisphere stiff-tails and the northern species of Oxyura are still uncertain at best, as evidenced by the varied taxonomic treatment that the Maccoa has received from Delacour and Mayr (1945), who regarded it as a race of O. australis, from Boetticher (1952), who consldered it as a race of O. …

An Ecotypic Differentiation Of Human And Bovine Fecal Streptococci, With Application To Human Pollution In The Yakima River, Harlen Harvey Johnson

All Master's Theses

It was the purpose of this study to report on the development of a technique for distinguishing human fecal streptococci from bovine fecal streptococci, and to make application of this technique in describing some of the sources of pollution in the Yakima River as contributed by the Wilson Creek drainage system, in the Ellensburg area of Washington.

Ecological Determination Of The Hour Of Nest Opening By An Ant, A. Dwight Smith

Loma Linda University Electronic Theses, Dissertations & Projects

The timing of daily opening of the nest entrance by the red harvester ant Popnomyrmex californicus was studied during all four seasons. Multiple regression analysis of several , environmental variables shows that the variation from day to day in mean opening time can be attributed to temperature differences, with the time that a given temperature was reached being the most important single variable for the autumn days studied. An equation incorporating this and the minimum temperature was sufficient to specify the mean opening time to within a few minutes. For the spring days, it was necessary to combine sunrise time …

"The Population Explosion And Ecology", Paul R. Ehrlich

Special Collections: Oregon Public Speakers

No abstract provided.

The Ias Bulletin, V2n5, November 1968, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Board of Directors Meeting at UNI
--- Visiting Scientist Program to be Revived
--- Speakers Bureau Directory to be Developed
--- Third Articulation Conference Passes Resolution
--- Membership and Dues Information
--- Local Arrangements Committees at Work
--- Academy Representatives to Attend AAAS Convention
--- Research Funds Still Available
--- AAPT Selects New Officers
--- ISTS Notes
--- Participation Form
--- Registration for Inclusion
--- IAS Address Changes and Corrections

Kentucky Warbler (Vol. 44, No. 4), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Electrophoretic Demonstration Of The Hybrid Origin Of The Gynogenetic Teleost Poecilia Formosa, Peter Abramoff, Rezneat M. Darnell, Joseph Silvio Balsano

Biological Sciences Faculty Research and Publications

No abstract provided.

Expectation Values Of Simple Correlated Helium-Atom Wavefunctions, Thomas P. Tsien, Russell T. Pack

Faculty Publications

In this Note we present the results of a calculation of the expectation values of a number of one- and two electron properties of the ground-state helium atom using two very simple correlated wavefunctions.

South Dakota Farm And Home Research: 81st Annual Report To South Dakotans (Fall 1968), Agricultural Experiment Station, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Contents
New Look in Research [p] 2
Three New Institutes [p] 3
Agricultural Engineering [p] 4
Agronomy [p] 7
Animal Science [p] 12
Bacteriology [p] 18
Botany-Biology [p] 21
Dairy Science [p] 22
Economics [p] 24
Entomology-Zoology [p] 27
Home Economics [p] 30
Horticulture-Forestry [p] 32
Plant Pathology [p] 34
Rural Sociology [p] 39
Station Biochemistry [p] 44
Veterinary Science [p] 45
Wildlife Management [p] 46
Activities at a Glance [p] 50
Publications [p] 51
Advisory Groups [p] 57
Staff [p] 58
Financial Statement [p] 59
Research Sidelights [p] back cover

Agricultural Experiment Station News October 1968

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
A NATIONAL ACADEMY OF AGRICULTURAL SCIENTISTS?
PERSONNEL ACTIONS
NEW GRANTS, CONTRACTS, AND COOPERATIVE AGREEMENTS
GENERAL NOTES
JOURNAL ARTICLES APPROVED IN OCTOBER

Revisions Of Two Subgenera Of Andrena: Micrandrena Ashmead And Derandrena, New Subgenus (Hymenoptera: Apoidea), David O. Ribble

Bulletin of the University of Nebraska State Museum (1924–2023)

This paper is a monographic revision of the bee subgenera Micrandrena Ashmead and Derandrena, new subgenus, of the genus Andrena in North America. Both subgenera occur in the New World and Micrandrena also occurs in the Old World. Twenty-eight species are treated, of which twelve are new: Andrena (Micrandrena) annectens, ishii, labergei, lamelliterga, lepidii, micheneri, Andrena (Derandrena) arctostaphylae, californiensis, hermosa, murietae, penutiani, viridissima. Thirteen names are placed in synonymy: Andrena semotula Cockerell with candidiformis Viereck and Cockerell; subtilicornis Viereck, nitidicornis Cockerell, chlorogaster nesiotes Timberlake, chlorogaster gavilanica Timberlake, radialis Timberlake, catalinica Cockerell with chlorogaster Viereck; vegana Viereck and Cockerell with illinoiensis …

Protein Synthesis During Fungal Spore Germination Ii. Aminoacyl-Soluble Ribonucleic Acid Synthetase Activities During Germination Of Botryodiplodia Theobromae Spores, James L. Van Etten, Robert Brambl

Department of Plant Pathology: Faculty Publications

The specific activities of 13 aminoacyl-soluble ribonucleic acid (sRNA) synthetases were measured at various time intervals during the germination of Botryodiplodia theobromae conidiospores. The enzyme activities were low or absent in ungerminated spores, and they increased rapidly as germination proceeded. When extracts of the ungerminated spores were prepared with mortar and pestle, very little or no enzyme activity was detected. When the extracts were prepared with a mechanical homogenizer, however, they exhibited some enzyme activity, although less than did the extracts from germinated spores. Enzyme activities from germinated spores were approximately the same, regardless of the method of preparation. The …

Membrane Bound Dehydrogenase Enzymes And Related Electron Transport Systems In Acetobacter Aceti Var. Liquefaciens: Their Induction And Pleiotropic Nature, John C. Rakoczy

Masters Theses

No abstract provided.

Zoonotic Diseases In The Changing Arctic, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Compatible with the biotic uniformity of northern regions, the occurrence of certain organisms which cause zoonotic diseases is general throughout the Arctic. In the past, most frequently affected by such diseases have been aboriginal peoples whose way of life involved encroachment upon naturally occurring parasite-host assemblages. Now, as changes take place in socioeconomic conditions in the Arctic, the importance of zoonotic diseases as a cause of morbidity may lessen among such peoples, but on the other hand, more nonaborigines may be affected. Although my remarks relate mainly to Alaska, again the biotic uniformity of the North seems to have its …

Biological Studies Of Selected Reaches And Tributaries Of The Colorado River, Nelson Thomas, Federal Water Pollution Control Administration

Publications (WR)

This report fulfills the request of the Colorado River Basin Project, Denver, Colorado, to determine the effects of municipal and industrial wastes on the aquatic life in selected waters of the Colorado River Basin. These studies were conducted with the assistance of personnel from the Colorado River Basin Project.

The Effects Of Exercise On The Response Of Rats To Air Blast, Kabby Mitchell Jr.

Biology ETDs

The mortality of rats exposed to the combined effects of air blasts and exhaustive exercise was investigated. Five hundred rats were ex­posed to sharp rising air blasts of 300 to 400 msec durations in a shock tube after which 250 rats were swum at different times and for varying periods post blast. There were 250 blast controls and 95 swim controls.

In the primary experiment, rats were swum to exhaustion begin­ning 15 min after exposure to graded levels of air blast. In the three other series of experiments, animals were swum to exhaustion at 5 min after blast; swum to …

Effects Of The Mutants Brown And Brown-Dominant On Pteridine Content In Drosophila Melanogaster, Donald M. Evans

Biology ETDs

The pteridine content of a brown, a brown-dominant, and a wild stock of Drosophila melanogaster was studied. The separation by ascending two-dimensional chromatography of the pteridine substances revealed differences in the number and quantity of pteridines present in these stocks. Differences also were found between pteridine content of heterozygotes and the corresponding homozygotes. The dominance and recessiveness, as reflected in eye color, did not extend to the level of pteridine metabolism, and pteridine substances were found in some heterozygotes that were not present in either homozygous parental stock.

Further Comments And Experience With Bio-Medical Data Processing, Wilbur R. Mccrum

Henry Ford Hospital Medical Journal

Experience with computers proves that "mechanical minds" are unable to provide clinically-useful answers without careful human judgments.

The Ias Bulletin, V2n4, September 1968, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- New Cover for the Bulletin
--- Corrections and Additions to the Membership List
--- 1969 Meetings Scheduled for Cedar Falls
--- IAS Dues Cover the Calendar Year
--- Proceedings for 1966 Ready
--- Academy Board to Meet
--- Fall Meeting AAPT
--- Our New President
--- Committee to Review the Academy Constitution
--- Collins Radio First Corporate Member
--- Professor Margaret Black Honored
--- Third Articulation Conference Scheduled for October 11 and 12 in Fort Dodge
--- Research Funds Available
--- 1967 Articulation Conference Report from Panel on Relations Between Physics and Mathematics
--- Science Teachers …

Publications Of The Staff Of The Henry Ford Hospital And The Edsel B. Ford Institute For Medical Research

Henry Ford Hospital Medical Journal

No abstract provided.

Agricultural Experiment Station News September 1968

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTORS OFFICE
INTERDISCIPLINARY RESEARCH PROGRAMS
PERSONNEL ACTIONS
NEW GRANTS, CONTRACTS AND COOPERATIVE AGREEMENTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – September 1968

The Prairie Naturalist Volume 1, No. 3. September, 1969

The Prairie Naturalist

EDITORIAL: A VOICE FOR CONSERVATION ▪ Paul B. Kannowski

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA—1968 ▪ Robert N. Randall

SOME ENVIRONMENTAL MANAGEMENT PROBLEMS AND PROPOSED SOLUTIONS ▪ Laurence R. Jahn

SOME PLANTS OF WESTERN MINNESOTA ▪ O. A. Stevens

MORTALITY OF MIGRATORY BIRDS AT GRAND FORKS, NORTH DAKOTA FOLLOWING A MOSQUITO CONTROL OPERATION IN MAY, 1969 ▪ Robert W. Seabloom, Lewis W. Oring and James R. Reilly

NESTING OF THE UPLAND PLOVER ON THE MISSOURI COTEAU ▪ K. F. Higgins, H. F. Duebbert and R. B. Oetting

NOTE

Albino sparrows discovered at Hazen, North Dakota ▪ Larry L. Kruckenberg and …

X-Ray Diffraction Powder Data For Steroids: Supplement Ix, Jonathan Parsons, Murray L. Polk, William T. Beher

Henry Ford Hospital Medical Journal

This supplement continues a series of publications which began with a separate section, in the December, 1958 issue. All supplements are listed in the references.

Hfh In The News

Henry Ford Hospital Medical Journal

No abstract provided.

Homotransplantation Of The Heart: A Synopsis, Rodman E. Taber

Henry Ford Hospital Medical Journal

Recent activity by others in heart transplantation makes this review of some 60 years of scientific experiment of timely interest. Present obstacles and future goals are cited.

New Computer Methods For Protein Crystallography, Martin Zwick

Complex Systems Faculty Publications and Presentations

New Computer Methods for Protein Crystallography, by Martin Zwick. Submitted to the Department of Biology on 30 August 1968 in partial fulfillment of the requirements for the degree of Doctor of Philosophy. The section, "MYOGLOBIN REFINEMENT," describes the fitting of an idealized polypeptide chain to a set of approximate backbone coordinates for the protein, sperm whale myoglobin. This procedure refines the structure by imposing upon it known bond distances and angles, and simultaneously derives a representation of the polypeptide conformation in terms of the values of the rotation angles about its single bonds. The overall rms and mean deviation between …

131i Metabolism In The Beagle Dog As Affected By Age And Route Of Exposure, Robert E. Foreman

Biology ETDs

Seven parameters were chosen to characterize¹³¹I metabolism in the Beagle, three were derived from the thyroid uptake -retention curve [maximum thyroid uptake, time to 90% maximum uptake, and biological half-life] and four from the two component whole-body¹³¹I retention curve [component intercept values, and component half-times]. These parameters were used to compare ¹³¹I metabolism in three age groups [6 , 18 , and 48 months], each consisting of six Beagles exposed to a single dose of ¹³¹I [ 100-300 µCi] by the inhalation route. An analysis of variance was performed on each parameter in this …

Uptake And Retention Of Tritiated Water By Tissues Of Laboratory Rats And Citellus Lateralis, Gary L. Bintz

Biology ETDs

Tritiated water was employed to study selective absorption and retention of water by different tissues of laboratory rats and C. lateralis. Control (hydrated) and water deprived (dehydrated) animals of both species were studied. Tissues analyzed included large tissues capable of water storage (skin, blood, muscle, liver, white fat) and tissues involved in exchange of water with the environment (small intestine, kidney, lung). The data demonstrated considerable variability in tritium contents, both in different tissues of the same animal, and in the same tissues of different animals of the same group. There appeared to be no selective uptake nor retention of …

Kentucky Warbler (Vol. 44, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Regeneration Of The Tentacles And Eyes Of The Marine Snail Ilyanassa Obsoleta Stimpson, W. Ernest Collins Jr.

Masters Theses & Specialist Projects

The study consisted of two major steps: (1) A macroscopic study was undertaken to determine whether or not the eye and tentacles of a gastropod which exhibits a mosaic development pattern could regenerate. (2) A study was undertaken using histological techniques to determine the detailed step-by-step process of regeneration of the eye and tentacle in Ilyanassa obsoleta.