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2,023 Matching Results

Start Over Year 1960 Month November Language English

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Results: 1 - 24 of 2,023 next

(open access)

Mass Transfer Coefficients and Interfacial Area in a One Stage Pulse Column

Over-all mass transfer coefficients were determined independently of the interfacial area by considering the operation of the pulse column to be a stage- wise process. The calculated coefficients describe only the operation of the pulse column for the free rise of organic droplets through a stage, since in the downstroke the aqueous phase passes through the organic phase in the form of rivulets preferentially wetting the plates. The driving force for transfer was based on the aqueous phase concentrations. The mass transfer coefficient was found to increase when the interfacial tension was reduced. Two factors appear to affect the mass transfer coefficient as the pulse frequency is changed and are: a) recycle or backmixing which tends to decrease the coefficient through a reduction of acetic acid in both phases and thereby increases the interfacial tension, and b) turbulence which enhances the coefficient by reducing the continuous film resistance. The first is important at or near the lower flooding limit, but the latter is the controlling factor at higher frequencies. (D.L.C.)

Date: November 1, 1960

Creator: Konopik, A. E. & Burkhart, L.

Object Type: Report

System: The UNT Digital Library

(open access)

Zero Field Magnetic Properties of Gadolinium Terbium, and Samarium

The mutual inductance or apparent susceptibility due to the presence of the sample in a coaxial inductance coil was observed for Gd, Tb, and Sm in fields of a few gauss over the respective temperature ranges of 78 to 310 deg K, 78 to 235 deg K, and 4.2 to 150 deg K. A paramagnetic Curie point of 284.2 deg K was found for Gd. For Tb, a transition was found which occurred to within 1 deg of the predicted temperature of 220 deg K, and a second peak occurred at 229.4 deg K which is within 2 deg of the heat capacity peak. The 220 deg K peak exhibited hysteresis and time dependence. Extrapolation of Tb data to DELTA M = 0 yielded a Curie point of 235.6 deg K. No hysteresis was observed in the 14.8 deg K peak for Sm. (D.L.C.)

Date: November 1, 1960

Creator: Hill, E. D. & Spedding, F. H.

Object Type: Report

System: The UNT Digital Library

(open access)

Research and Development of Metal Hydrides. Summary Report for October 1, 1958-September 30, 1960

A detailed study of the fundamental relations in the zirconium -- hydrogen system was made in order to clarify the many points of dispute and to evolve a complete picture describing all phases of this system. An engineering evaluation was made of means for utillzing the various high cross-section metal hydrides in shielding or control applications. These materials would combine the processes of thermalization and absorption. Consequently, they are of considerable interest for use in shielding or controlling epithermal reactors. (auth)

Date: November 1, 1960

Creator: Beck, R. L.

Object Type: Report

System: The UNT Digital Library

(open access)

Equilibrium of the System Lanthanum Nitrate-Praseodymium Nitrate-Nitric Acid-Water-Tributyl Phosphate

A study of the extraction characteristics of the three systems lanthanum nitrate--nitric acid--water--tributyl phosphate, praseodymium nitrate--nitric acid--water--tributyl phosphate, and lanthanum nitrate--praseodymium nitrate nitric acid -water--tributyl phosphate was conducted. The separation factors between praseodymium and lanthanum for the system lanthanum nitrate--praseodymium nitrate-nitric acid--water--tributyl phosphate were shown to be a function of the total nitrate concentration of an equilibrium phase and practically independent of solute composition. A method of predicting the concentrations of lanthanum nitrate, praseodymium nitrate, and nitric acid in an equilibrium phase of the system lanthanum nitrate--praseodymium nitrate--nitric acid--water--tributyl phosphate was presented. A comparison of the extraction characteristics of the system rare-earth nitrate--nitric acid--water--tributyl phosphate for the nitrates of lanthanum, praseodymium, neodymium, and samarium was made. (auth)

Date: November 1, 1960

Creator: Sharp, B. M. & Smutz, M.

Object Type: Report

System: The UNT Digital Library

(open access)

Radiation Hazards Encountered in Arc Melting Thorium

A project to provide information on the hazards associated wlth arc melting of Th is described. A general airsampling analysis was made to determine the separation, concentration, and distribution of Th daughter (decay) products throughout arc melting, machining, and forging processes found in a handling facility. The value of well coordinated health physics program is stressed in connection with potential health hazards and personnel protection. Building, equipment, and exhaust ventilation requirements for such a facility are discussed, along wlth special handling methods. (auth)

Date: November 1, 1960

Creator: Lowery, R. R.

Object Type: Report

System: The UNT Digital Library

(open access)

Laboratory Investigation of Decontaminating Solutions for Primary Loop Decontamination in the New Production Reactor

An investigation was made of methods for decontaminating the primary loop of the New Production Reactor (NPR). Decontamination factors ranging from fifty to several thousand were obtained with several different combinations of cleaning solutions. In general, fission product activity was removed to a lower residual level than was activated corrosion product activity, and carbon steel was easier to decontaminate than was stainless steel. It was necessary to completely remove the oxide film from the metal surfaces to obtain adequate activated corrosion product decontamination. Descaling procedures were also satisfactory for decontaminating fission product and uranium dioxide contamination. (M.C.G.)

Date: November 1, 1960

Creator: Mendel, J. E.

Object Type: Report

System: The UNT Digital Library

(open access)

Development of Liquid-Phase Sintering Techniques for Molybdenum Alloys. Final Report

An envelope-type microstructure produced by liquidphase sintering techniques was used to develop ductiIe molybdenum-base alloys for sodium-cooled fast reactor application. A total of 105 compositions was examined; 21 showed evidence of room-temperature ductility, and a number of other compositions appeared promising. The prerequisites for obtaining ductile liquid-phase sintered materials were demonstrated. The most ductile alloys produced are based on the Mo--Pd--Cu and Mo --W--Ni--Fe systems. Molybdenum-base compositions were developed which could be rolled to 90% reduction in thickness at room temperature. The compactibility of selected alloys with uranium at 750 deg C and liquid sodium at 650 deg C was studied. In both cases the presence of iron and nickel was found to be deleterious. Although alloys compatible with uranium were produced, the specimens exposed to liquid sodium all showed evidence of attack to varying degrees. Two compositions based on the Mo--W--Ni and W--Cr--Ni systems, respectively, appear to hold promise as potential canning materials for sodium- cooled fast reactor application. (auth)

Date: November 10, 1960

Creator: unknown

Object Type: Report

System: The UNT Digital Library

[UNT Players Jumping]

Photograph of four UNT football players jumping into the air on a hill. Photo was taken November of 1960. (849; L1.2)

Date: November 1960

Creator: unknown

Object Type: Photograph

System: The UNT Digital Library

BASEMENT BOX 67.0319

Photograph taken during daylight of gutted building after a fire. Caption: "Tortured Metal Wreckage gives mute evidence of the fury of a blaze sweeping Enid Foundry and Machine Shop Tuesday. The fire destroyed a one story wing of the sprawling plant and gutted the shop's 2 story section. Firemen narrowly prevented damage to the Johnson Elevator across the street. Gene Marritt, foundry owner, who estimated loss at $100,000-plus, said some of his 32 workers will return Wednesday for salvage and clean-up."

Date: November 22, 1960

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

[Photograph of Cora Stafford]

Photograph of Cora Stafford, Director of the Art Department at North Texas State College. She stands in front of a poster. She is wearing a belted shirt dress and a pearl necklace.

Date: November 1960

Creator: unknown

Object Type: Photograph

System: The UNT Digital Library

[Photograph of Cora Stafford]

Photograph of Cora Stafford, Director of the Art Department at North Texas State University. She stands with her arms at her side in front of a peg board holding books on art and design. She is wearing a belted shirt dress and a pearl necklace.

Date: November 1960

Creator: unknown

Object Type: Photograph

System: The UNT Digital Library

[Portrait of Lee Abbott]

Photograph of journalism student Lee Abbott sitting with a book open in his open lap. In the image another figure can be seen off the left of the frame wearing a hat.

Date: November 1960

Creator: unknown

Object Type: Photograph

System: The UNT Digital Library

[Close-up of student Lee Abbott]

Photograph of journalism student Lee Abbott inside a classroom. In the image Abbott takes up a large portion of the frame from the waist up looking at the camera. Behind him a calendar and other miscellaneous items can be seen on a bulletin board.

Date: November 1960

Creator: unknown

Object Type: Photograph

System: The UNT Digital Library

[BASEMENT BOX 67.0395]

Photograph two groupings of men are each spraying a fire hose on a building on the main street that is engulfed in flames and smoke. Caption: "High wind, boiling smoke foiled firemen Saturday as flames destroyed this Hugo feed company plant."

Date: November 26, 1960

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

[Dr. Ernest Clifton from the English Department, November 1960]

Photograph of Dr. Ernest Clifton posing for a photograph in front of shelves filled with books. He is wearing a grey suit and a striped tie.

Date: November 1960

Creator: unknown

Object Type: Photograph

System: The UNT Digital Library

[BASEMENT BOX 67.0241]

A nighttime photograph of a fire in the downtown business district at Chandler in Lincoln County, Oklahoma. The image shows citizens and firemen using hoses in a failed attempt to save the C & G Grocery & Market from burning. Caption: "TO NO AVAIL, Chandler Firemen work to extinguish a blaze on Main street there . The early-morning fire at C & G Grocery destroyed the structure and caused extensive smoke damage to three adjoining business places."

Date: November 15, 1960

Creator: Lucas, Jim

Object Type: Photograph

System: The Gateway to Oklahoma History

(open access)

n+-p ELASTIC SCATTERING AT 310 Mev: REC0IL-NUCLEONPOLARIZATION

The recoil-proton polarization in {pi}{sup +}-p elastic scattering at 310-Mev incident-pion laboratory kinetic energy has been experimentally measured at four scattering angles with scintillation counters. Polarization values obtained, related rms experimental errors, and mean center-of-mass recoil angles are: +0.044 {+-} 0.062 at 114.2 deg. =0.164 {+-} 0.057 at 124.5 deg, -0.155 {+-} 0.044 at 133.8 deg, and -0.162 {+-} 0.037 at 145.2 deg. The sign of the polarization is defined to be positive when a preponderance of the recoil protons had their spin vectors pointing in the direction of {rvec P}{sub i} x {rvec p}{sub f}, where this quantity is the cross product of the initial and final momentum vectors of the conjugate pions. A beam of 1 x 10{sup 6} pions per sec incident upon a 1.0-g/cm{sup 2}-thick liquid-hydrogen target produced the recoil protons, which were then scattered by a carbon target at a mean energy varying with recoil angle from 113 to 141 Mev. The polarization of the recoil protons was analyzed by measuring the asymmetry produced in the carbon scattering. A proton beam of known polarization was used to determine the analyzing ability (measured asymmetry divided by the polarization of the incident protons) of the system at …

Date: November 16, 1960

Creator: Foote, James H.; Chamberlain, Owen; Rogers, Ernest H.; Steiner,Herbert M.; Wiegand, Clyde E. & Ypsilantis, Thomas.

Object Type: Report

System: The UNT Digital Library

(open access)

π<sup>+</sup>-p ELASTIC SCATTERING AT 310 Mev: PHASE-SHIFT ANALYSIS

A comprehensive phase-shift analysis of {pi}{sup +}-p elastic-scattering data at 310-Mev incident-pion laboratory kinetic energy has been performed. The experimental data utilized include measurements of the differential and total cross sections and of the recoil-proton polarization. The D-wave phase shifts were found to be definitely needed in order to attain an adequate fit to the data. A general search for phase-shift solutions was carried out, using S-, P-, and D-wave phase shifts. One solution--of the Fermi type--was found that fits the data significantly better than any of the other solutions obtained. The calculated errors in the phase shifts of this set vary from 0.4 to 0.6 deg. Because it was felt that these errors might be deceivingly restrictive, the effects of small nuclear F-wave phase shifts on the results of the analysis were investigated and were found to be large; not only are the uncertainties in the original Fermi-type solution increased, but additional sets of phase shifts arise that fit the data well. One of these new solutions is similar to the original Fermi set except that the magnitudes of the phase shifts in this new fit are in general larger than those in the initial solution, and the signs …

Date: November 16, 1960

Creator: Foote, James H.; Chamberlain, Owen; Rogers, Ernest H. & Steiner, Herbert M.

Object Type: Report

System: The UNT Digital Library