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Electronics In Medical Research, Victor W. Bolie

Proceedings of the Iowa Academy of Science

Due to modern achievements in science, and increasing public support, medical research in the United States is gaining a strong foothold, particularly in the areas of cancer and heart disease. Medical research work demands the best available efforts from many different fields of science. Chemistry has and will continue to play a dominant role. Only in recent years, however, has the science of electronics emerged to· a place of major significance. The measurement of biological functions by means of extremely sensitive electronic methods presents a vast new horizon otherwise unattainable in the search for medical knowledge.

Tillering Studies On Oats: Iv. Effect Of Rate And Date Of Nitrogen Fertilizer Application, K. J. Frey, S. C. Wiggans

Proceedings of the Iowa Academy of Science

Nitrogen applied to oat fields has many morphological and physiological effects on the plants. Increased grain yields have been reported by Nelson et al. (5), Pritchett, (6) and many others; increased overall top growth was reported by Gericke (3); and increased nitrogen content of the grain has been found by Wiggans and Frey (7), Brieba (1), and others. In a greenhouse experiment Gericke (3) found that a delay in applying nitrogen to oats in a low fertility soil increased the number of heads per plant. An application equal to 80 pounds per acre at seeding produced approximately 1.5 heads per …

Effect Of Burning On Seedstalk Production Of Native Prairie Grasses, John H. Ehrenreich, J. M. Aikman

Proceedings of the Iowa Academy of Science

This study was conducted on the Hayden prairie, located in northeastern Iowa and involved a further investigation of the effects of burning on the growth of certain native prairie grasses as to relative production of various plant parts. The measurements are of plants taken from an upland prairie area burned in 1956 and an adjacent unburned area.

The Devonian Section At The Klein Quarry, Johnson County, Iowa, R. D. Michael, T. L. Welp

Proceedings of the Iowa Academy of Science

This paper is a renewal of a practice carried on by L. W. Wood in the 1930s, that of presenting each year one of the more interesting geologic sections encountered during the year's work by the members of the geology section of the Iowa State Highway Commission. The Devonian section at the Klein quarry in the NW¼, Sec. 2, T. 79 N., R. 7 W., Johnson County, was chosen because the exposed face and extensive coring offered an opportunity to study the members of the Cedar Valley formation and the upper members of the Wapsipinicon formation in a single location, …

A Guide For The Selection Of Kindergarten Equipment Devised As A Result Of A Study Conducted In Three Cities In Iowa, Rose Marie Dolan

Dissertations and Theses @ UNI

Any person who has had the responsibility of keeping an elamontary school properly equipped with materials for effective teaching is aware of the problem of selecting this equipment objectively, and yet realizing a full return from the money being invested. Determining the amount and kind of equipment needed for an elementary classroom from the numerous sources from which it can be obtained is a timeconsuming job for most supervisors, principals, and teachers. Not only wuld time be saved, but more effective classroom teaching and less waste of school funds might result if a guide could be provided for those who …

Junior High School Typewriting: A Survey Of Current Practices In Iowa And A Suggested Course Of Study, Dewayne C. Cuthbertson

Dissertations and Theses @ UNI

The problem is divided into two major parts. The first part of the problem is to survey the schools in Iowa in which typewriting is presently taught in the junior high grades to determine the following:

1. Objectives of the course

2. Texts or other instructional materials used

3. Content of the course

4. Frequency of the course

5. Length of the course

6. Special problems peculiar to such courses

The second portion of the problem is the construction of a course of study for typewriting at the junior high school level.

A Proposed Citizens Committee Handbook Concerning Methods Of Studying School District Reorganization, Edwin K. Barker

Dissertations and Theses @ UNI

A large number of communities in Iowa have been of divided opinion concerning the problem of reorganizing their schools into more efficient administrative units and attendance areas. Many more communities will be faced with the same problem. Bitterness has developed, wrong approaches have been used and incorrect reasons have been put forth to bring about reorganization. As a result, the educational progress of the children of Iowa has been handicapped. There are many reasons why people favor or oppose reorganization other than sound educational ones.

A Study To Determine Why Students Stayed In School, Roy Charles Hanes

Dissertations and Theses @ UNI

The purpose of this study was to determine the reasons why students in four selected high schools in Black Hawk County, Iowa, stayed in school until graduation.

The Alumnus, V40n4, December 1956, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Social Science Sponsors Mexican Tour
-- ISTC Coed Meets the President
-- On Campus
-- O.E. Brinkley Chosen "Dad of the Day"
-- Wrestling, Basketball Seasons Open
-- ...For Want of a Teacher
-- News
-- Births
-- Deaths
-- Marriages

Iowa State Teachers College Schedule Of Classes, Fall 1956, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

Iowa State Teachers College Schedule Of Classes, Spring 1956, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

The Alumnus, V40n1, February 1956, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Eight Week Summer Session
-- Jazz Concert Gets Wide Praise
-- On Campus
-- Cagers Make Journey Title Bid
-- Spring Reunion Set for May 27
-- Seminar Abroad is Success
-- G. Wescott, '37, Ends Foreign Work
-- News
-- Births
-- Marriages
-- Deaths
-- Mail Box
-- Merchant Scholarship Awards

Iowa State Teachers College Schedule Of Classes, Winter 1955-56, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

Influence Of Time Of Application Of 2,4-D, 2,4,5-T And Ddt On Kentucky Bluegrass Seed Germination And Pasture Weed Populations, Louis N. Bass, E. P. Sylwester

Proceedings of the Iowa Academy of Science

The bluegrass seed industry is continually faced with the problem of excessive amounts of weed material in the freshly stripped bluegrass seed which farmers bring to their drying yards for sale. If the weed material content is too great the seedsmen refuse to buy the bluegrass seed offered to them; however, they cannot refuse to buy all strippings which contain weed material or they will not have sufficient seed to meet the demand for processed Kentucky bluegrass seed.

Purified Ration Studies With Lambs, W.H. Hale, Wise Burroughs

Proceedings of the Iowa Academy of Science

The results reported in this paper are attempts to evaluate several dietary factors in the development of a purified ration for lambs that will give growth rates similar to those obtained on natural rations.

Nitrogen Uptake In Oats, S. C. Wiggans, K. J. Frey

Proceedings of the Iowa Academy of Science

The differential ability of strains of a crop species to absorb and utilize nitrogen has important implications in the development of new field crop varieties. This fact becomes more important with the increased need for nitrogen fertilization that is necessary to maintain and improve the yields of crops. Varieties of crops which produce relatively high yields when grown on soils with limited amounts of available nitrogen will undoubtedly be more popular in the future. Harvey (6) found that some com inbreds were more efficient than others in utilizing soil nitrogen. This characteristic proved to be inherited in crosses between good …

Growth And Other Physiological Responses To Diethylstilbestrol In Diet Of Rats And Guinea Pigs, Rodney Preston, Edmund Cheng, Wise Burroughs

Proceedings of the Iowa Academy of Science

Recent studies have shown that the inclusion of diethylstilbestrol (stilbestrol) in rations of fattening beef cattle (1) and lambs (2) results in stimulation of liveweight gains and improvement of overall feed utilization in these species of animals. The physiological explanations for this action of stilbestrol are not apparent at this time since no such stimulation from stilbestrol has been noted in other species of animals. In studying the mode of action of stilbestrol in fattening beef cattle and lambs, it seemed desirable to first study the growth responses of certain laboratory animals (rats and guinea pigs) to see if they …

Relationship Between Particle Size And Potassium Release In The Clarion And Marshall Soils, Raymond B. Daniels

Proceedings of the Iowa Academy of Science

A study by Lawton and Pierre (1946) of different soil types in Iowa and their potassium availability showed that the Marshall series were consistently higher in exchangeable potassium than the Clarion series. The Marshall series is developed in Wisconsin loess and is classified as a Medial Brunizem. The Clarion series is developed in Cary and Mankato till and is classified as a Minimal Brunizem. The Marshall series is dominantly a silty clay loam, whereas the Clarion series is dominantly a loam. Pratt and Morse (1954) found, when they grouped several Ohio soils by areas, the potassium release was lowest from …

Popular Religious Ideas And Attitudes In The United States As Indicated By A Study Of Selected Recent Mass Circulation Magazines, Dorothy Paddock Auld

Dissertations and Theses @ UNI

The increase in religious activity in the United States in recent years is a phenomenon which interests many observers. Evidence of such an increase is abundant, and interpretations of the evidence are varied.

Some Uses Of An Oscilloscope In High School Physics, John Ray Bolte

Dissertations and Theses @ UNI

Use of the cathode ray oscilloscope in the high school physics class has, in many instances, been overlooked by the high school physics teacher as a means of increasing the student's understanding of certain electrical phenomena. In many cases, the teacher may not be well acquainted with the use of an oscilloscope and, very often, the teacher may feel that the cost of such an instrument is beyond the limits of the typical high school science budget.

Status Study Of The Elementary School Principalship In Southwestern Iowa, Roy Keith Duncan

Dissertations and Theses @ UNI

The purpose of this study is to report the status of the elementary school principalship in the state of Iowa for the school year of 1954-1955.

Federal Reserve Board Regulation Of Consumer Credit Since World War Two, Donald L. Fett

Dissertations and Theses @ UNI

It is the purpose of this study to determine if Federal Reserve regulation of consumer credit has affected the use of such credit from the end of World War Two until December 31, 1955.

Colonel David B. Henderson: Speaker Of The House, Willard Hoing

Dissertations and Theses @ UNI

The prominence of Iowa in national political affairs has long since declined. A little more than a half century ago her sons were high in the councils of state. Her Senators had acquired great prestige; her Representatives spoke with a voice of authority in Bouse committees. An Iowan was Speaker of the House of Representatives and ten important congressional committee chairmanships were held by Iowans. Two cabinet portfolios--the Treasury and Agriculture--were held by men from the Hawkeye state. Iowans twice neared the presidential office and one might have ridden into office on an assassin's bullet had he previously been willing …

The Vocational Usage Of Shorthand By The 1950 And 1954 High School Graduates Of Hardin County, Iowa, Lawrence Gehring Jr.

Dissertations and Theses @ UNI

The investigator, as a business education teacher, has frequently been asked by school administrators and others to present evidence as to the proper place of shorthand in the high school curriculum. The present investigation was concerned with securing such evidence.

In Memoriam: Kate Daum; Kenneth M. Krezek; John Thomas Mcclintock; H. Earl Rath

Proceedings of the Iowa Academy of Science

No abstract provided.

Noxious Weed Seeds In Iowa Oats And Red Clover Samples, L. E. Everson

Proceedings of the Iowa Academy of Science

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The present study is based on the occurrence of noxious weed seeds in oat and red clover seed samples submitted to the seed laboratory by Iowa farmers for seed testing. Extension workers and farmers may find this information helpful in planning local weed control programs. It may also be of value to seedsmen and farmers who purchase local seed, but wish to avoid seed lots containing noxious weed seeds.

Cultural Practices And Test Weight In Oats, K. J. Frey, S. C. Wiggans

Proceedings of the Iowa Academy of Science

Of the several criteria of seed quality in oats, weight per bushel, or test weight, is most universally used. The standard test weight for oats is 32 pounds per bushel, but with present-day varieties and production practices, oats produced in the Corn Belt often exceed this value by from 3 to 6 pounds. The oat seed characteristics which have been found to be correlated with test weight arc: hull percentage, seed shape and size and plumpness and density of the caryopsis. Test weight in oats has been proven to be an inherited characteristic. Barring diseases such as rust, which may …

A Method For Determining Stem Canker Resistance In Soybean, John M. Dunleavy

Proceedings of the Iowa Academy of Science

Stem canker disease of soybean is caused by the fungus, Diaporthe phaseolorum var. caulivora, and at present there are no soybean varieties known to be highly resistant to this disease. Stem canker takes its name from the resemblance of the discolored area of an infected stem to a canker. As the infected area on a stem enlarges, the stem is girdled and the portion of the plant above the girdled area is killed. Stem canker seriously affects soybeans in the northcentral region of the United States and has been reported to cause heavy losses (Athow and Caldwell, 1954; and Dunleavy, …

Characteristics Of Some Soils Of The Iowan Till Area Of Northeast Lowa, E. M. White, F. F. Riecken

Proceedings of the Iowa Academy of Science

The published county soil surveys show that Carrington loam and silt loam soils occur extensively in the CC and CKC areas of northeast Iowa outlined in Figure 1. Most of these soil surveys were made from 1914 to 1930, and as pointed out by Simonson, Riecken and Smith ( 1952), the former Carrington series in this area is now considered to consist of several series. In the present study several morphologically different profiles formerly included with the Carrington loam and silt loam soil types were sampled and certain laboratory determinations made. The data obtained and a brief discussion of their …

Some Observations On Regeneration In Dileptus Anser, Paul A. Meglitsch, Thomas Johnson

Proceedings of the Iowa Academy of Science

One of the most interesting capacities of protozoans is their ability to replace lost parts following injury. Although they are structurally the equivalent of cells they are functional organisms, and a study of their behavior makes it possible to bring together concepts usually applied in the cellular field with those applied in the analysis of whole organisms. The same factors that operate to evoke a particular form in the whole organism must act in a small regenerating piece of a protozoan. Whether these factors are nuclear genes or protoplasmic organization, they act rapidly in the regenerating animal, regulating the form …