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The Clay Prairie In Butler County, Iowa, C. W. Lantz Jan 1969

The Clay Prairie In Butler County, Iowa, C. W. Lantz

Proceedings of the Iowa Academy of Science

The Clay Prairie is a small area of 2.64 acres of native prairie belonging to the University of Northern Iowa. It is located in Butler County, 15 miles northeast of Parkersburg, Iowa. A list of the species of the vascular plants found in this area is given, representing 33 families.

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Artificial Teeth For Permanent Implantation, Theresa Janikowski, Thomas D. Mcgee Jan 1969

Artificial Teeth For Permanent Implantation, Theresa Janikowski, Thomas D. Mcgee

Proceedings of the Iowa Academy of Science

Artificial teeth with a low solubility and with properties similar to natural teeth were produced for implantation tests. The teeth were made from MgAl2O4 spinel and Ca3(PO4)2 Whitlockite to achieve low solubility and non-toxic reaction products. The method of manufacture is described.

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The Effects Of Sedimentation On The Water Quality Of The Coralville Reservoir, Iowa, Larry R. Mitzner, Donald B. Mcdonald Jan 1969

The Effects Of Sedimentation On The Water Quality Of The Coralville Reservoir, Iowa, Larry R. Mitzner, Donald B. Mcdonald

Proceedings of the Iowa Academy of Science

The Coralville Reservoir is a flood control impoundment located on the Iowa River just upstream from Iowa City. Since being placed in operation in 1958 its capacity at conservation pool level has been reduced nearly 20% by sedimentation. Studies of the reservoir's fishery have been conducted since 1961. Fish population surveys do not indicate a noticeable modification of the fish population due to siltation. A decrease in the total fish population, primarily sport fish, occurring early in 1965, was due to oxygen depletion caused by heavy farm land runoff. Limnological studies of the Iowa River and the reservoir have been …

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The Effect Of Man On Water Yield, Peak Runoff And Sedimentation, H. P. Johnson, K. E. Saxton, D. W. Deboer Jan 1969

The Effect Of Man On Water Yield, Peak Runoff And Sedimentation, H. P. Johnson, K. E. Saxton, D. W. Deboer

Proceedings of the Iowa Academy of Science

Man can alter several facets of the hydrologic cycle appreciably. Those facets most easily altered are related to vegetative cover and surface geometry either on the land or in the drainage system. Changes brought about by man affect surface runoff and base flow, timing and peak discharges of flood flows, and water yields. Cover changes and more efficient drainage systems increase sediment delivery to streams. This paper attempts to define evidence of changes, and to comment on our present understanding of the extent of changes.

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Some Observations On The Homing Instinct Of The Mourning Dove, Glenn Jones Jan 1969

Some Observations On The Homing Instinct Of The Mourning Dove, Glenn Jones

Proceedings of the Iowa Academy of Science

During 5 years, 1964 thru 1968, of bait-trapping and banding of mourning doves, Zenaidura macroura, in the Ruthven area of Iowa, significant data have been compiled on the homing instinct and longevity of this bird. During this 5-year period 1,546 doves were banded. Recaptures of doves banded in previous years included 15 in 1966 and reached a high of 55 birds in 1968. Doves banded as close as the Ingham-High Game Unit, only 20 miles northeast, were not recaptured at Ruthven during the last 3 years of the study. Four birds banded in 1964 have been retaken each year. These …

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Fish Distribution In The Skunk River Below Ames, Iowa, Kenneth D. Laser, Clair G. Rausch, Craig L. Olson, Kenneth D. Carlander Jan 1969

Fish Distribution In The Skunk River Below Ames, Iowa, Kenneth D. Laser, Clair G. Rausch, Craig L. Olson, Kenneth D. Carlander

Proceedings of the Iowa Academy of Science

The Skunk River has been straightened most of the way from Ames to Colfax. In the summer of 1968, 24 species of fish were collected. There were few species other than minnows, and red shiner (Notropis lutrensis), bigmouth shiner (N. dorsalis) and sand shiner (N. straminous) were most abundant. Water levels were above normal during the study and effects of pollution upon fish distribution were not pronounced. The diversity index, d, at the station where treated-sewage wastes entered, was lower than at stations up and down stream but was higher than at the four stations farthest downstream. Uniformity of habitat …

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Land Use Changes And The Ring-Necked Pheasant In Iowa, Richard C. Nomsen Jan 1969

Land Use Changes And The Ring-Necked Pheasant In Iowa, Richard C. Nomsen

Proceedings of the Iowa Academy of Science

Pheasants are farm game birds and continue to thrive in diversified farming areas. Drastic land use changes in recent years have greatly altered the pheasant's environment. The acreage of safe nesting cover has decreased to only a fraction of its former abundance. Iowa's primary pheasant production cover, oats, dropped from 23% of all cropland in 1948 to only 5% in 1967. Production is poor in alfalfa and many hens are lost during the early cutting of this cover type. Herbicides decreased the value of potential nesting cover along roadsides and ditches. The bare field in winter offers little resistance to …

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Measurement Of Physical And Chemical Changes Induced During Weathering Of A Carbonate Rock Unit, D. E. Simon, J. H. Elwell, L. V. A. Sendlein, J. Lemish Jan 1969

Measurement Of Physical And Chemical Changes Induced During Weathering Of A Carbonate Rock Unit, D. E. Simon, J. H. Elwell, L. V. A. Sendlein, J. Lemish

Proceedings of the Iowa Academy of Science

Changes which occurred during weathering of the Iowa Falls Member of the Mississippian Hampton Formation at Iowa Falls, Iowa were investigated quantitatively. The physical properties measured were: a) compressive strength, b) pore sized distribution, c) porosity and d) permeability. Chemically determined calcite and dolomite contents are related to the physical changes by utilization of an extensive sample sequence. The following changes are shown to be associated with the weathering process: 1) pore space and the degree of its interconnectedness increases with weathering, 2) calcite and dolomite are leached out during weathering, and 3) the rate of removal of calcite is …

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Recent Status Of Ruffed Grouse In Iowa, Eugene D. Klonglan, Gene Hlavka Jan 1969

Recent Status Of Ruffed Grouse In Iowa, Eugene D. Klonglan, Gene Hlavka

Proceedings of the Iowa Academy of Science

The ruffed grouse is a native Iowa game bird, formerly present in forested areas over much of the state. Intensive land use that replaced forested areas with croplands or grazed them heavily with livestock resulted in the disappearance of the species from all but northeastern Iowa by about 1930. Ruffed grouse are presently found in suitable forested habitat in all of Allamakee and Clayton Counties, most of Winneshiek County and in portions of Fayette, Dubuque, Delaware and Howard Counties immediately adjacent to occupied range in the three counties first listed. Spring roadside drumming counts have given an index of 1.6 …

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Iowa's First Ruffed Grouse Hunting Season In 45 Years, Eugene D. Klonglan, Gene Hlavka Jan 1969

Iowa's First Ruffed Grouse Hunting Season In 45 Years, Eugene D. Klonglan, Gene Hlavka

Proceedings of the Iowa Academy of Science

A 16-day hunting season on ruffed grouse, the first in 45 years, was held in northeastern Iowa in 1968. Season dates were November 2 to 17, inclusive, with a daily bag limit of two and a possession limit of four birds. The 1150 hunters who took part in this season bagged 720 grouse, or 0.6 birds per hunter for the entire season. It took an average of 11.8 gun hours of hunting to bag one ruffed grouse. Birds were flushed at the rate of a bird per 1.9 hours of hunting. An average of 5.4 shots was fired per bird …

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Hydrogeology Of The Northeast Quarter Of Marion County, Iowa, Musa Qutub Jan 1969

Hydrogeology Of The Northeast Quarter Of Marion County, Iowa, Musa Qutub

Proceedings of the Iowa Academy of Science

This research was done on a study of the Hydrogeology of the Northeast Quarter of Marion County, Iowa, during the year of 1965-1966. In the surveys conducted the bedrock topography was found to be an extremely irregular surface; it is composed of both Mississippian and Pennsylvanian rocks. The top of the Mississippian rocks was found to be an irregular erosional surface possibly indicative of Karst topography. The piezometric surface for wells cased in Mississippian strata indicates a ground water divide. North of this divide the water flows into the South Skunk River, and south of the divide the water flows …

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Closed-Circuit Television In Electron Microscopy, Elmer A. Rosauer Jan 1969

Closed-Circuit Television In Electron Microscopy, Elmer A. Rosauer

Proceedings of the Iowa Academy of Science

Closed-circuit television adapts well to the educational aspects of electron microscopy in terms of extending immediate student participation. The advantages and some examples of the dual role in education and research of such a system are presented.

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Effects Of Hypothermia On Absorption Of P-32 In Mice, Bruce C. Luecke Jan 1969

Effects Of Hypothermia On Absorption Of P-32 In Mice, Bruce C. Luecke

Proceedings of the Iowa Academy of Science

Twenty male white mice were intraperitoneally injected with 210 microcuries of P-32 each. Ten were returned to a 25 degree C. environment and ten others to a 5 degree C. environment with similar food, light, and water provisions. Half of each temperature group was killed and frozen 24 hours following injection while the remaining ten were killed and frozen three weeks following injection. Relative absorptive functions of six organs were studied showing that hypothermia resulted in lower P-32 uptake and longer retention.

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Pretreatment Of Spores As A Factor In Dimensional Analysis Of Two Species Of Histozoic Myxosporida, Caroline Congdon Long, Paul A. Meglitsch Jan 1969

Pretreatment Of Spores As A Factor In Dimensional Analysis Of Two Species Of Histozoic Myxosporida, Caroline Congdon Long, Paul A. Meglitsch

Proceedings of the Iowa Academy of Science

Spores of Henneguya exilis, taken during the summer of 1968 from the gills of Ictalurus punctatus caught in the Des Moines River near Knoxville, Iowa, and of a species of Myxosoma apparently closely related to Myxosoma ovalis, taken from the gills of Carpiodes velifer from the same locality, were subjected to storage at room temperatures, 4° C, and deep freezing. Repeated measurements of spores under different pretreatment showed that the dimensions of the spores and polar capsules remained remarkably stable, as did ratios of the dimensions of spore parts. Abnormalities in the details of spore architecture were seen under conditions …

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A Bilateral Color Anomaly In The Crayfish, Orconectes Immunis (Hagen), Virgil E. Dowell, Leonard P. Winier Jan 1969

A Bilateral Color Anomaly In The Crayfish, Orconectes Immunis (Hagen), Virgil E. Dowell, Leonard P. Winier

Proceedings of the Iowa Academy of Science

A live female crayfish; Orconectes immunis (Hagen) exhibiting unusual body coloration was given to the biology laboratories at the University of Northern Iowa for study. Its right half, including antennae and other appendages, was colored an azure blue; the left half was colored normally. This bilateral coloration mosaicism persisted following molting. Gynandromorphism as a corollary factor is eliminated on the basis that no apparent external sexual intergradation of sexual dimorphism was noticeable. Somatic mutation in early embryonic development is the most likely explanation. A mutation in a gene affecting some aspect of the biochemical synthesis pathway in pigmentation seems to …

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The Effect Of An Electromagnetic Field On Early Emhryogenesis In Quail, Thomas Knutson Jan 1969

The Effect Of An Electromagnetic Field On Early Emhryogenesis In Quail, Thomas Knutson

Proceedings of the Iowa Academy of Science

Incubating quail embryos in a magnetic field resulted in accelerated somite growth. Twenty % of the experimental embryos in one series of experiments exhibited reversed torsion. The heterogenous magnetic field as opposed to the homogenous magnetic field was more effective in causing these effects. The theory of magnetic action on a biological system is discussed.

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Information For Authors Jan 1969

Information For Authors

Proceedings of the Iowa Academy of Science

No abstract provided.

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An Analysis Of Student Outcomes In An Nsf Summer Institute For High-Ability Science Students, Glenn A. Isserstedt Jan 1969

An Analysis Of Student Outcomes In An Nsf Summer Institute For High-Ability Science Students, Glenn A. Isserstedt

Iowa Science Teachers Journal

After standardized testing of high-ability science students who were participants in a National Science Foundation Summer Science Institute, there is evidence to indicate that their understanding of science intangibles is dependent upon the section of the program in which they were enrolled. The participants in the mathematics and biochemistry sections demonstrated significantly better understanding of science.

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Summary Of The Elementary Section Of The Fall Ists Meeting, Eloise Soy Jan 1969

Summary Of The Elementary Section Of The Fall Ists Meeting, Eloise Soy

Iowa Science Teachers Journal

Mr. D. Louis Finsand, elementary science consultant for Malcolm Price Laboratory School, Cedar Falls, was the speaker for the first session of the elementary meeting. His topic was "Science Integration: Using the National Programs with Your Science Curriculum."

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Iowa Section Of Aapt Jan 1969

Iowa Section Of Aapt

Iowa Science Teachers Journal

The Annual Spring Meeting of the Iowa Section of the American Association of Physics Teachers will be held on Saturday, April 19, 1969, at the University of Northern Iowa, Cedar Falls.

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Back Cover Jan 1969

Back Cover

Iowa Science Teachers Journal

No abstract provided.

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Etymology: A Plea For Its Use In Early Education, Charles J. Ellis Jan 1969

Etymology: A Plea For Its Use In Early Education, Charles J. Ellis

Iowa Science Teachers Journal

My belief, based upon watching numerous students mature at Iowa State University, is, if etymology were stressed in primary and secondary schools, more older students would feel less burdened with so-called big, scientific names as well as nonscientific terms.

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Open Letter To Science Teachers, Frank W. Starr Jan 1969

Open Letter To Science Teachers, Frank W. Starr

Iowa Science Teachers Journal

A wise choice of emphasis was made in 1932 when the Junior Academy of Science was organized and supported by the Iowa Academy of Science. All activities involved secondary teachers and students. Activities included science club, community-service projects, individual and group science projects, essays, and an annual meeting in conjunction with the Iowa Academy of Science.

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Instructional Aid On Science Lab Safety Jan 1969

Instructional Aid On Science Lab Safety

Iowa Science Teachers Journal

"How to Provide for Safety in the Science Lab," another in a series of instructional aids prepared by the National Science Teachers Association, provides precautionary pointers for teachers of science laboratories at all levels. The booklet, written by James R. Irving, Consultant to Stansi Scientific Division, Fisher Scientific Company, Chicago, considers safety from the standpoints of physical facilities and the teacher's attitude and preparation.

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Iowa Science Teachers Section Presents Award For Outstanding Service To Warren Classon On March 7, 1969 Jan 1969

Iowa Science Teachers Section Presents Award For Outstanding Service To Warren Classon On March 7, 1969

Iowa Science Teachers Journal

George Chapman, President of ISTS of the Iowa Academy of Science, explains the presentation of the award from ISTS for Outstanding Service at the Short Course Banquet held in the Student Union of Iowa State University on March 7, 1969.

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The Magnitude Of The American Educational Establishment (1968-69) Jan 1969

The Magnitude Of The American Educational Establishment (1968-69)

Iowa Science Teachers Journal

More than 60,400,000 Americans are engaged full-time in the nation's educational enterprise as students, teachers, or administrators. Nearly another 140,000 make education a time-consuming avocation as trustees of local school systems, state boards of education, or institutions of higher learning. The breakdown is given here.

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Development Of A Prediction Equation For The Placement Of Students In Seventh-Grade Life Science, Lloyd Harley Barrow Jan 1969

Development Of A Prediction Equation For The Placement Of Students In Seventh-Grade Life Science, Lloyd Harley Barrow

Dissertations and Theses @ UNI

It was the purpose of this investigation to: (1) determine the relative value of intelligence quotient, Iowa Tests of Basic Skills composite standard score, Iowa Tests of Basic Skills reading comprehension standard score, final sixth-grade science mark, and the Reed General Science Test score in predicting the life science mark; (2) present the findings that would provide the bast possible estimate of success in life science; and (3) compare the prediction equation for the enrichment group with the non-enrichment group's prediction equation. The study involved students of seventh-grade life science for the school years 1963 through 1968, who were enrolled …

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The Creation Of Three Original Junk Sculptures, Norman Bennett Jan 1969

The Creation Of Three Original Junk Sculptures, Norman Bennett

Dissertations and Theses @ UNI

The purpose of this thesis is to apply any sculptural concepts and beliefs, as well as my sensitivity to materials, to the creation of sculpture from junk materials. The text of this thesis is concerned with a personal definition of junk, a brief historical background of the use of junk in art, personal statements concerning the nature of sculptural material, personal statements concerning my sculptural concepts and beliefs, and a short discussion of problems which arose during the creation of my thesis works. Photographs of these three works are given for visual consideration by the reader. The original works are …

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County Seats Of Northeast Iowa: A Multivariate Classification, William E. Blake Jan 1969

County Seats Of Northeast Iowa: A Multivariate Classification, William E. Blake

Dissertations and Theses @ UNI

The purpose of the study was to classify, or group, the fifteen county seats of northeast Iowa according to selected demographic, social, and economic phenomena. To achieve such groupings various methods and techniques of multivariate analysis were utilized. The desire to group the county seats based upon their likenesses or homogeneous traits was paramount. A brief historical overview of Iowa, and a discussion of the reasons for county seat selection, were used to set the background for a multivariate classification of northeast Iowa county seats. Selected accounts of northeast Iowa county establishment and organization were cited as an introductory aid …

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The Wood And Metal Lamination Process In Jewelry Making, Joseph Dean Bolender Jan 1969

The Wood And Metal Lamination Process In Jewelry Making, Joseph Dean Bolender

Dissertations and Theses @ UNI

The problem under investigation was to combine wood and metal using a lamination process. Research was limited to the area of jewelry making. No previous references describing this process could be found. The technical considerations found necessary to successfully use the lamination technique were as follows: 1) Epoxy glue, a resin and a catalyst, is required; 2) the metal surfaces must be roughed up with emery paper to allow for a stronger wood to metal bond; 3) a backing of metal or wood is necessary on large pieces to provide adequate strength; 4) wood and metal parts must be clamped …

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