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Effect Of Recurrent X-Radiation On Germination And Seedling Vigor In Oats, R. Abrams, K. J. Frey Jan 1958

Effect Of Recurrent X-Radiation On Germination And Seedling Vigor In Oats, R. Abrams, K. J. Frey

Proceedings of the Iowa Academy of Science

The immediate effects of exposing oat seeds to high dosages of X-ray are generally twofold: (a) many of the seeds fail to germinate, and (b) the seedlings produced are stunted. It is generally accepted that these physiologic effects react the same as other environmental variation in biological materials. However, it is possible that even though the physiologic effects disappear in one generation that certain weaknesses may persist but remain hidden. Weakened linkages of some type within chromosomes could conceivably be a case in point. If this is the case, one might expect the effects to be cumulative with repeated x-ray …

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Eflect Of Lodging On Yield And Test Weight Of Oats And Establishment Of Alfalfa Seedlings, A. J. Norden, K. J. Frey Jan 1958

Eflect Of Lodging On Yield And Test Weight Of Oats And Establishment Of Alfalfa Seedlings, A. J. Norden, K. J. Frey

Proceedings of the Iowa Academy of Science

Lodging in small grains has been shown to reduce yield and quality of the grain in addition to the harvesting difficulties incurred. Eldredge obtained a yield reduction of 47 percent by bending over oat straws as the heads were emerging from the boot. The yield decreased with injury at succeeding weekly intervals until just before ripening when the loss was 12 percent. Pendleton found that Clinton oat yields were reduced 37 and 17 percent by complete lodging four and 20 days after heading respectively. The plots lodged at 45 degrees on the same two dates yielded 14 and three percent …

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The Relationship Of Total Nitrogen Percentage To Yield, Test Weight And Groat Percentage Of Oats Grown At Different Locations, Samuel C. Wiggans Jan 1958

The Relationship Of Total Nitrogen Percentage To Yield, Test Weight And Groat Percentage Of Oats Grown At Different Locations, Samuel C. Wiggans

Proceedings of the Iowa Academy of Science

With increased interest in crop quality, the effect of environmental factors on various species is becoming of major importance. One criterion of quality in the oat grain is nitrogen content. Frey found that the average protein content of the oat grain varied as much as 25 percent from year to year, and that environmental effects on the protein fractions seemed to be additive. Teply et al. and Hunt et al. concluded that environmental factors materially influenced the niacin and pantothenic acid contents of wheat and corn, respectively. Wiggans and Frey showed that some varieties of oats were able to utilize …

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The Effect Of High Temperatures At Varying Stages Of Growth On Kernel Production In Oats, S. C. Wiggans, R. H. Shaw Jan 1958

The Effect Of High Temperatures At Varying Stages Of Growth On Kernel Production In Oats, S. C. Wiggans, R. H. Shaw

Proceedings of the Iowa Academy of Science

Oats generally are considered to be less heat tolerant than other cereal crops. Coffman found that heat resistance in oats was correlated with winter hardiness, and that early maturing winter and spring varieties were usually more heat resistant than midseason or late maturing varieties. Winter oat varieties with fine culms were the most heat resistant. Maximum resistance to killing injury occurred when the plants were about 50 days old, which corresponded to the early boot stage. Resistance to high temperatures was found to be an inherited character and was independent of disease resistance. The present study was initiated to determine …

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A Fen In Southwestern Missouri, Henry S. Conard Jan 1958

A Fen In Southwestern Missouri, Henry S. Conard

Proceedings of the Iowa Academy of Science

In "A Report on Greene County" by Edward M. Shepard in Geological Survey of Missouri, Volume 12, Part 1, 1898, we find the following description of "Shaking Mound Spring" in n.w. 1/4 Sec. 15, T29N, R24W. "Here the water rises from the summit and seeps off all over the low mound, which is 12 ft. high, and 50 x 70 ft. in dimension." It "is most remarkable from the fact that it shakes all over when walked upon. Poles are easily sunk through the tenacious turf down to a distance of 6 to 10 feet into the black muck that …

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Identification Of Inclusions In Steel By Microradiography, Ernest J. Duwell Jan 1958

Identification Of Inclusions In Steel By Microradiography, Ernest J. Duwell

Proceedings of the Iowa Academy of Science

It is necessary to investigate the solution chemistry of the nonmetallic elements in iron to understand the chemistry of steelmaking. Most of these elements have an appreciable solubility in liquid iron, but may be separated from the iron by precipitation of an insoluble compound with another metal. They may also separate from the iron when the metal is cooled and solidified; in these circumstances an iron salt, or the salt of another metal may be formed. The distribution of a non-metallic element between such phases and what is still in solid solution may be described by an equilibrium constant that …

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Chemical Determination Of Isoftavones, Edmund Cheng, Lester Yoder Jan 1958

Chemical Determination Of Isoftavones, Edmund Cheng, Lester Yoder

Proceedings of the Iowa Academy of Science

Recent developments in ruminant nutrition by using estrogenic additives to stimulate the rate of gain and feed efficiency of beef cattle (Burroughs et al. 1954) indicated the important role of feeds and forages containing estrogenic substances. Forages such as clover and alfalfa have been shown to contain small amounts of estrogenic substances (Cheng et al. 1953a). An isoflavone derivative, genistein, isolated from soybean oil meal was found to be estrogenic by the mouse uterine weight assay (Cheng et al. 1953b). Several isoflavone compounds have been synthesized chemically (Yoder et al. 1954) and they have been shown to be estrogenic also …

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Comparative Solubility Of Protein In Cottonseed Flakes Extracted By Hexane And By Ethanol, Lionel K. Arnold, Beverly Jean Schriver Jan 1958

Comparative Solubility Of Protein In Cottonseed Flakes Extracted By Hexane And By Ethanol, Lionel K. Arnold, Beverly Jean Schriver

Proceedings of the Iowa Academy of Science

The solvent commonly used in the United States for the extraction of vegetable oils is a petroleum fraction consisting mainly of hexane. Experimental work has been done in this country on the extraction by ethanol of soybean oil by Beckel and associates (1) and of cottonseed and other oils by Rao and associates (4, 5). Ethanol appears promising for use in Asian countries such as India and China largely because it is more readily available than commercial hexane (6). The ethanol extracted cottonseed meal has a lower gossypol content than the hexane extracted meal and for that reason is preferable. …

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Glucose Tolerance In Lambs As Affected By Type Of Ration, W. H. Hale, R. P. King Jan 1958

Glucose Tolerance In Lambs As Affected By Type Of Ration, W. H. Hale, R. P. King

Proceedings of the Iowa Academy of Science

Metabolism of glucose is little understood in the ruminant animal. It has been demonstrated that little or no carbohydrate passes into the intestinal tract of adult ruminants on an all roughage ration (Heald 1951). Soluble carbohydrates of roughages are fermented to volatile fatty acids in the rumen. Available data show that 70% of total cellulose digestion occurs in the rumen and 30% in the cecum and large intestine with little or no cellulose digestion occurring in the small intestine (Hale, et al. 1947 and Gray 1951). The end products of cellulose digestion are the volatile fatty acids and not glucose. …

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A Sub-Surface Stratigraphic Marker In The Devonian Cedar Valley Formation, Mary C. Parker Jan 1958

A Sub-Surface Stratigraphic Marker In The Devonian Cedar Valley Formation, Mary C. Parker

Proceedings of the Iowa Academy of Science

Numerous spore-like bodies have been observed in the Cedar Valley formation of Late Devonian age during routine microscopic studies of cuttings from wells in East Central Iowa. The distribution of wells in which these individuals have been observed is shown on Plate 1. They occur above the basal sandy limestones of the Solon member in a zone approximately ten feet in thickness. Recently these spore-like bodies have been studied and the zone of occurrence correlated in an attempt to determine their value as a stratigraphic marker in sub-surface correlations. This paper should be regarded as an introduction to further study.

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A Geologic Section In Hancock County, Iowa, Robert D. Michael Jan 1958

A Geologic Section In Hancock County, Iowa, Robert D. Michael

Proceedings of the Iowa Academy of Science

With the planning of the Federal Interstate Highway System and the stepped up program for improvement of State roads in Iowa, has come an ever increasing need for the development of new sources of road building materials. Some areas of the State have abundant resources of good limestone and sands and gravels suitable for construction of highways, whereas other sections of the State are relatively poor in good material. One of these previously poorer areas, through which one section of the proposed four lane interstate road passes, is dealt with in this paper.

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The Buchanan Interglacial, E. J. Cable Jan 1958

The Buchanan Interglacial, E. J. Cable

Proceedings of the Iowa Academy of Science

On the John G. Miller farm, Section 27, Waterloo Township, Black Hawk County, the writer examined very carefully an area which was excavated for fill for grading of the new four-lane highway into west Waterloo. The area through which the new highway was surveyed was very low ground which flooded when Black Hawk Creek, a tributary of the Cedar River, overflowed. Thus, it became necessary to construct a high road bed through this area. To secure material for the grade, a hill about 25 feet in height was entirely leveled. The top of the hill was capped by about six …

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The Occurrence Of Pebble Dikes In The Topia Mining District, Durango, Mexico, John Lemish Jan 1958

The Occurrence Of Pebble Dikes In The Topia Mining District, Durango, Mexico, John Lemish

Proceedings of the Iowa Academy of Science

Pebble dikes are intrusive features associated with the forceful emplacement of magmas. Farmin (1934) and Lovering (1949), who studied pebble dikes at their type area in the Tintic District, Utah, describe them as vein- or dike-like bodies composed of rounded, subangular, or angular pebbles of materials derived from local formations in a matrix of finer-grained pebble material or of intrusive rock. In the course of the field investigation of the Topia Mining district in the northwest part of Durango, Mexico, pebble dikes were observed cutting the andesite rocks of the area. These dikes at Topia were similar to the pebble …

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The Genesis Of Pegrnatites, Robert Duncan Enzmann Jan 1958

The Genesis Of Pegrnatites, Robert Duncan Enzmann

Proceedings of the Iowa Academy of Science

Pegmatites are usually thought of as late magmatic emanations from cooling batholithic masses; however, in recent years doubt has been cast on the intrusive nature of many of the larger granitic masses. The granite-gneiss massif used as an example in this discussion is the Kheis granitized geosyncline of South West Africa and the Union of South Africa. From the top downward it is a pile of metavolcanics, gray gneiss and three cyclothemes of metasediments. This complex was previously called the Namaqualand granite-gneiss batholith and thought to be intrusive. If massif is neither intrusive nor batholithic in nature, associated pegmatites cannot …

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Exceptional Values Of Metric Density, N. F. G. Martin Jan 1958

Exceptional Values Of Metric Density, N. F. G. Martin

Proceedings of the Iowa Academy of Science

Lebesgue's density theorem states that at almost every point of a measurable set S in En, the metric density of S exists and is 1 and at almost every point of the complement of S, the density of S exists and is 0. This theorem was first proven for E1 by Lebesgue using his theory of integration. It was later proven by Denjoy [1], Lusin [2], and Sierpinski [3] for E1 without the use of integration. The theorem was first proven for En by de la Vallee Poussin.

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Principles Of Fast Fission, Janet Paul Jan 1958

Principles Of Fast Fission, Janet Paul

Proceedings of the Iowa Academy of Science

In the thermal reactor a moderator of some sort is used to slow down the neutrons so that fission can take place at thermal speeds. In the case of a reactor using U-235 along with U-238, it is just possible to produce a self-sustaining chain reaction. This is because U-238 is only fissionable by high energy neutrons and the inelastic scattering cross section of U-238 is dominant at high energies. Therefore the fast neutrons produced on fission have a very small chance of producing another fission.

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Electronic Abstracts - Art For The Space Age, Ben F. Laposky Jan 1958

Electronic Abstracts - Art For The Space Age, Ben F. Laposky

Proceedings of the Iowa Academy of Science

New forms and techniques of art for the space age may involve physical forces and ideas, as well as materials and procedures from technology. Such a new approach to abstract design is that shown here in the electronic abstractions or oscillons.

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Student Industrial Research Program (Sirp) Summer Student Science Program, E. M. Vaughan Jan 1958

Student Industrial Research Program (Sirp) Summer Student Science Program, E. M. Vaughan

Proceedings of the Iowa Academy of Science

A report on the initiation of the SIRP-Bendix, St. Ambrose was presented during the 1956 Iowa Academy of Science meeting. At that meeting three student reports on projects undertaken as a result of this program were presented. Two student project reports were presented at the 1957 meeting. Four student reports will be presented at our 1958 meeting. A former St. Ambrose student who reported initially at the 1956 meeting on ultrasonic plating, Mr. Roy Buckrop, will report at this meeting. Mr. Pat Short will extend his 1957 report on "Fuels for Aircraft Propulsion Systems".

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Critical Thinking Development Among Physical Science Students, Philip J. Lorenz Jan 1958

Critical Thinking Development Among Physical Science Students, Philip J. Lorenz

Proceedings of the Iowa Academy of Science

The physical science course for nonscience students has the following objectives: subject matter achievement, an understanding of the methods and philosophy of science, and the development of critical thinking ability. Also, courses of this type offer unparalleled opportunities as a public relations medium between the world of science and the educated layman. It was found that most college freshmen enrolling in the physical science course had little academic experience in the solution of problems requiring critical thinking. However, they were usually quite proficient in work depending mainly upon memorization and seemed to expect questions requiring only this ability. At the …

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Vocabulary And Achievement In Developmental Psychology, Don C. Charles, John A. Bath Jan 1958

Vocabulary And Achievement In Developmental Psychology, Don C. Charles, John A. Bath

Proceedings of the Iowa Academy of Science

The purpose of this study was to determine the relationship between achievement in an introductory course in developmental psychology and knowledge of word-meanings in that area. It is a preliminary study, to be expanded as additional data are collected. Several studies exist which show a significant relationship between general vocabulary and college grade-point average, usually the first term average. The studies of Bernard (1), Bolton (2), and Templeman (4) are typical. Levine (3) developed a psychological vocabulary test in analogy form at the University of Minnesota which is used for both selection and evaluation in graduate and undergraduate psychology classes …

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Prediction Of Iowa Traffic Fatalities, Victor W. Bolie Jan 1958

Prediction Of Iowa Traffic Fatalities, Victor W. Bolie

Proceedings of the Iowa Academy of Science

The trend in highway traffic accident fatalities has important ramifications in legislation, insurance, education and law enforcement. The present fatality rate in Iowa is about 5 deaths per 100 million motor vehicle miles, which is not greatly different from the national average. The work of Lauer and Swanson on reciprocal, logarithmic and linear trends of fatality rates shows that the number of traffic deaths per 100 million motor vehicle miles is decreasing in such a way that a linear extrapolation would indicate a zero rate by the year 1978. However, as a result of a more rapidly increasing traffic density, …

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A Preliminary Study On Foreign Personnel Selection, Herbert Paul Froehlich Jan 1958

A Preliminary Study On Foreign Personnel Selection, Herbert Paul Froehlich

Proceedings of the Iowa Academy of Science

The problem is not the usual one of trying to predict behavior relevant to an individual's daily activities, but that of predicting how an individual will behave in and adapt to an environment in which he has never found himself, or ever thought he would find himself. Involved in such prediction is the question of whether the individual will behave as predicted once he comes in contact with the new environment. This may be the situation facing a company wanting to locate abroad, hiring native employees together with some Americans. The expense of training, ill-will, loss of production, etc., created …

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Effect Of Speed On Steering Efficiency, A. R. Lauer, Virtus W. Suhr Jan 1958

Effect Of Speed On Steering Efficiency, A. R. Lauer, Virtus W. Suhr

Proceedings of the Iowa Academy of Science

Studies have shown that there is a definite tendency for a driver to lose in steering efficiency when he takes one hand off the wheel. Johnson and Lauer (1) found either hand alone to be 91.4 per cent as efficient in manipulative ability as both hands used together. Their findings were confirmed in a lesser degree by Lauer and Suhr (2) for both simple and complex driving. The present study was made to determine whether or not a loss in steering efficiency occurs when driving speed is increased.

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Antidiuretic Substance Levels In Rat Plasma, Frederic A. Giere Jan 1958

Antidiuretic Substance Levels In Rat Plasma, Frederic A. Giere

Proceedings of the Iowa Academy of Science

In recent years it has been our desire to evaluate the presence of antidiuretic substance (ADS) in the blood of animals under various experimental conditions (Giere, 1951; Eversole, Giere and Rock, 1952; Giere and Eversole, 1954; Eversole and Giere, 1954). For these determinations we have used the method of Birnie, et al. (1950) and also our modification of the technic of Ames and van Dyke (1952). The results herein reported constitute a continuation of the above work to include other physiological and experimental conditions including such controversial subjects as the concentration of ADS in the adrenalectomized rat (Birnie, et al., …

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Ectopia Cordis In A 35 Day Old Human Embryo, E. V. Enzmann, J. C. Luly, S. D. Miroyiannis Jan 1958

Ectopia Cordis In A 35 Day Old Human Embryo, E. V. Enzmann, J. C. Luly, S. D. Miroyiannis

Proceedings of the Iowa Academy of Science

One of the major, though fortunately rare, abnormalities of human intrauterine development is a condition known as ectopia cordis. It was first described by the Swiss poet, physician and naturalist Haller in 1706. Arey (1954) briefly characterizes ectopia cordis as an abnormality in which the heart protrudes from the anterior body wall between the widely separated halves of the sternum, and comes to lie exposed on the surface of the chest. Others (cf. De Abbot) have described ectopia cordis as an abnormality in which the heart is malpositioned, high up in the chest, protruding out from the body in the …

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The Entomobryiforrn Male Genital Plate, Kenneth Christiansen Jan 1958

The Entomobryiforrn Male Genital Plate, Kenneth Christiansen

Proceedings of the Iowa Academy of Science

It has been long known that the males of most species of Collembola bear a specialized genital plate surrounding the gonopore. In some groups, such as the Isotomidae and Hypogastruridae, this structure has been useful in making taxonomic distinctions while in the Entomobryidae and related families this organ has been largely ignored. The reasons for this are many but are primarily concerned with the difficulties of examination of this organ in the entomobryids where the whole body is densely covered with large setae and/or scales. In addition to this the organ itself is often extremely small and so complicated that …

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Studies On Ciliates From Mollusks Of Iowa, James H. Penn Jan 1958

Studies On Ciliates From Mollusks Of Iowa, James H. Penn

Proceedings of the Iowa Academy of Science

The ciliates which live a commensal life on the gills and in the mantle cavities of mollusks include several species of peritrichs, but most of them belong to a suborder of holotrichs called Thigmotricha (Chatton and Lwoff, 1922). Very little work has been done on the geographical distribution and host-specificity of the ciliates of mollusks. Emphasis has been placed rather upon the taxonomic and morphological features.

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Effects Of Weather Conditions On The Winter Activity Of Mearns Cottontail, Ancel M. Johnson, George O. Hendrickson Jan 1958

Effects Of Weather Conditions On The Winter Activity Of Mearns Cottontail, Ancel M. Johnson, George O. Hendrickson

Proceedings of the Iowa Academy of Science

An important phase of cottontail management is estimation of the populations. The accuracy of methods used to determine the numbers may be increased with greater knowledge of the effects of weather conditions on cottontail activity. The effects of temperature on cottontail activity have been observed by several investigators. In Michigan, Allen (1939) found that females tended to use burrows at temperatures of 10° F. Linduska (1947) reported the use of dens by cottontails in southern Michigan to be three times as great at temperatures of -8° to +12° F. as when the temperature ranged from 12° to 32° F., and …

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Measurement Of Some Factors Affecting The Catch In A Minnow Seine, Andreas A. Paloumpis Jan 1958

Measurement Of Some Factors Affecting The Catch In A Minnow Seine, Andreas A. Paloumpis

Proceedings of the Iowa Academy of Science

In a study of the effects of drought and flood on fishes of a small stream (Paloumpis, 1958), it was necessary to compare the fish population at different seasons on as quantitative a basis as possible. Wire traps, an electric shocker, and rotenone were used to collect some of the data, but most of the quantitative data for comparative purposes were secured by regularly seining with a 20-foot common sense minnow seine.

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1958 Little Panther, Iowa State Teachers College High School Jan 1958

1958 Little Panther, Iowa State Teachers College High School

Malcolm Price Laboratory School Yearbooks

The student yearbook of the Teachers College High School (later the Northern University High School, part of the Malcolm Price Laboratory School of the University of Northern Iowa).

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