The products from the flssion of U induced by charged particles were studied in a mass spectrometer. Both U/sup 238/ and U/sup 235/ were bombarded with 45.7- and 24-Mev helium ions, and U/sup 238/ was also bombarded with 730-Mev protons and 100-Mev carbon ions. Tbe total chain-yields in the region of the rare-earth elemerts (mass 140 to mass 155) for most of the above bombardments and a thermal-neutron bombardment of U/sup 235/ were studied by using the isotopicdilution technique. Independent yields were measured for all the above bombardnnents for several shielded nuclides. (auth)

A manipulator or mechanical arm involves an upper and a lower arm, with a variable angle between them. Cables used to transmit motion and force from the upper to the lower arms pass over a pulley at the joint or elbow. A pulley, axiaily fixed with respect to the joint, imposes a change in length of the cable as the angle between the arms varies. Manipulation design requires a cable of constant length during this variation; this constant length may be achieved by guiding the center of the pulley along the proper path. Acceptable solutions were obtained in terms of variables such as the lengths of each arm, the radius of the pulley, and the angle between the arms. In one design the pulley center is moved along a straight line with respect to the lower arm, while in the other solution the pulley center is moved along a circular arc with respect to the upper amn. Practical and economical mechanisms based on these solutions were investigated for use in manipulator design. (auth)

The range and range straggling of 96.8-kev Ra/sup 224/ recoil atoms produced by alpha decay of Th/sup 228/ have been measured in H/sub 2/, D/sub 2/, He, N/sub 2/, Ne, and Ar by a charged, parallelplate, collection technique. The range and range straggling of 725-kev Th/sup 226/ recoii atoms produced by bombardments of Ra/sup 226/ with 41.6-Mev helium ions have been measured in D/sub 2/, He, N/sub 2/, and Ar by this same technique. Experimental results seem to indicate that the range-energy relation for the stopping of heavy recoils by nuclear collisions is not linear, as is theoretically predicted by Bohr. The distribution of ranges about the mean range appears to be Gaussian. Various factors contributing errors to the measured range stragglings are discussed in detail P coil efflciencies of the heavy recoils produced in the (d,) (d,2n), (d,3n), and (d,p) reactions of Bi/sup 209/ have been measured at incident deuteron energies of 15 0 to 23.6 Mev for Bi/sup 209/ targets of 0 6 to 42.5 mu g/cm. The recoil effic encies of the different reaction products have been compared on the basis of probable nuclear-reaction mechanism by which they are produced. Mean ranges for Po/sup 208/ in Bi/sup …

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The determination of the specific radioactivities of the chlorophylls and carotenoids of algae after photosynthesis with C/sup 14/O/sub 2/ is a formidable task, due to the extreme lability of these compounds. The whole success of the method depends on adequate chromatographic separations of the pigments from the colorless contaminants which are closely associated with them, and yet the time involved for such separations is sufficient for marked decomposition of the pigments to occur. It is suggested that the techniques of column chromatography, followed by centrifugallyaccelerated paper chromatography of the spectroscopically pure pigments, may resolve this problem. In an investigation of the action of cyanide on photosynthesis, green algae have been treated with radioactive cyanide. A multitude of products have been found to be formed in very short exposure times. One of these was identified with a material formed when algae are given radioactive CO/sub 2/ and nonradioactive KCN. This material has been identified as the cyanide addition product of ribulose-1,5- diphosphate. Upon hydrolysis it gives a branched-chain sugar acid (or mixture of isomers) closely related to hamamelonic acid. Perhaps the most important aspect of this work is the demonstration of the chemlcal role of cyanide. (auth)

Through a direct comparison of representative extracts from the Lettres and the Cartas, this thesis proposes to demonstrate each author's portrayal of contemporary political, religious, social, and literary conditions in his own country.

The major theoretical position of this study was that the cognitive functioning of the creative individual, as compared with the non-creative normal, is characterized by the greater availability of mature operations as these operations are defined by the Rorschach. It was assumed that the "creative individual" is free to use his imaginal processes to enrich his perception of the world. This study recognized that the perception of good Gestalten of the world is a function of the perceiver, his needs, defense mechanisms, integration, and the characteristics of the stimulus-field. When the stimulus is ambiguous, as it is in the Rorschach, the perceiver has to draw on his own resources more heavily than if the stimulus was structured.

The purpose of this paper is to present a comparative study of marine bacteria, molds and actinomycetes in regard to their ability to degrade certain pure and mixed complex compounds possibly occurring in the lagoon waste traps of the Texas Gulf Coast. This comparison was made using a differential oxygen uptake as the index of specific compound utilization.

This study is devoted to the activities of the urban liberals and their rural allies in their attempt to wrest control of the state party from the conservative Democrats.

The purpose of this investigation was the synthesis of some 1,4-naphthoquinones and 1,4-anthraquinones. It will be shown that some of these substituted quinones exhibit physiological properties.

This study was concerned with testing two hypotheses frequently made in the interpretation of performance on the Children's Scale. The first hypothesis is that maladjustment is directly related to the amount of scatter and the second stresses that the specificity of maladjustment may be determined by the pattern of successes and failures.

This thesis is a study of the effect of lipid injections on complement titers of guinea pigs.

The purpose of this study is to identify and evaluate the competencies that a person who desires to teach should possess in order to be an effective classroom teacher. Identification of these competencies will be made from evidence obtained through a consensus of student's opinions, these opinions to be solicited from students currently enrolled in courses required for a major in elementary education, and from the consensus of faculty members who ware currently teaching these courses.

The role that aquatic actinomycetes play, in the production of tastes and odors in water supplies has been investigated since 1948. The ability of these organisms to produce by-products in lakes and streams, which renders the water unpalatable, is of considerable public health importance. It is desirable that the waterworks industry has as much information as possible concerning the factors that contribute to the growth of these organisms. Since it appears that the aquatic actinomycetes may be isolated from most fresh-water sources, the problem of diversified environments and nutritional requirements offers an excellent field of investigation. The fresh-waters of the world contain variable quantities of electrolytes that may determine in part the biological activity of these organisms. The unsolved questions in this instance are concerned with the electrolytes present and their quantitative effects on the growth and development of these forms.

Since heparin combines with some antibiotics to decrease the toxicity of the antibiotic to the patient, the purpose of this investigation is to determine whether it has any effect upon the development of resistance to antibiotics by Staphylococcus aureus.

"The present study was undertaken to calculate the nutritive value of the food consumed by male college athletes eating a self-selected diet in the college athletes dining room"--3.

The purpose of the study was to determine the effectiveness of the social and interpersonal aspect of the Austin College Plan of educational development by carrying out a plan of evaluation designed by the Hogg Foundation of the University of Texas and the Psychology Department of North Texas State College.

This paper will be concerned with some fundamental properties of a line. In particular, fundamental ordering properties of a line segment are covered.

The purpose of the work reported here was to determine the feasibility of applying the nuclear induction technique of Bloch to the direct observation of nuclear magnetic resonance in the very weak magnetic field of the earth.

The present study may be considered endocrinological and radiobiological in nature. The endocrinology phase was concerned with studying the changes in endocrine function following the application of a stress agent. X-irradiation was chosen as the stressor in order to determine any difference in effect of this stressor from others which have been studied, e. g. heat, cold, metabolic poisons. Liver slices taken from rats at various time intervals following whole body X-irradiation were tested for their ability to metabolize hydrocortisone from a Krebs-Ringer solution.

"As the American Civil War was brought to a close in April, 1865, the entire nation was plunged into an era which was characterized by unrest and turmoil. The North had before it the task of reconstructing the former Confederate states so that they would be able to resume their former positions in national councils, while the South was called on to adjust to a way of life which was drastically different. In military District Five, formed as a result of congressional control, as in the rest of the South, continued post-war controversy has tended to becloud appraisals of the period of military reconstruction. A fair evaluation requires examination of the primary sources inasmuch as secondary works on the era have continued to reflect sectional viewpoints. Such an evaluation reveals the need for a comprehensive re-interpretation of the entire era of military control of reconstruction under the congressional plan. This analysis of military government in District Five represents such a re-interpretation of one area of the post-war South."-- leaf iii.

The problem in this investigation consists of, first, the procurement of several strains of Micrococcus pyogenes var. aureus; second, the comparison of the degree and rate of development of resistance of these organisms to terramycin; and, third, to study the morphological and physiological changes which occur during the development of resistance.

Atomic-beam magnetic resonance techniques were used to measure the nuclear spins of I/sup 123/, I/sup 124/, I/sup 126/, I/sup 130/, I/sup 132/, I/ sup 133/, I/sup 135/, and At/sup 211/. Also, measurements of the magnetic-dipole interaction constant, and the electroquadrupole interaction constant, and the electroquadrupole interaction constant for I/sup 131/ and I/sup 132/ are reported. The design of the atomic-beam apparatus is described. Experimental methods and sample preparation are discussed and results are interpreted in the light of the single particle shell-model theory of nuclear structure. (J.R.D.)

This paper is a study of the properties of commutators, and deals exclusively with finite groups.