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Articles 10561 - 10590 of 13214
Full-Text Articles in Entire DC Network
The Missouri Miner, April 28, 1977
The Missouri Miner, March 31, 1977
Differential Energy-Loss Cross Sections For Ionization Of Atomic Hydrogen By 25-200-Kev Protons, John T. Park, John E. Aldag, Jacob M. George, Jerry Peacher, Jim H. Mcguire
Differential Energy-Loss Cross Sections For Ionization Of Atomic Hydrogen By 25-200-Kev Protons, John T. Park, John E. Aldag, Jacob M. George, Jerry Peacher, Jim H. Mcguire
Physics Faculty Research & Creative Works
Ionization continuum cross sections, differential in energy loss, have been determined from the energy-loss spectra of 25-, 50-, 75-, 145-, and 200-keV protons scattered from atomic hydrogen. The theoretical differential cross sections in the Glauber and Born approximations that are presented show that the theory and the experimental results for 200-keV proton impact agree very well, but below 200 keV there are differences. These differences, which are more pronounced at the lower projectile energies, may be explained in terms of charge transfer to the continuum, which is not treated in our Born and Glauber calculations of direct Coulomb ionization. The …
The Missouri Miner, January 27, 1977
The Missouri Miner, January 27, 1977
The Missouri Miner Newspaper
No abstract provided.
Plutonium Assessment Modeling -- Government Policy, Non-Proliferation, And The Government Fence, Harold A. Kurstedt Jr., Joel A. Nachlas
Plutonium Assessment Modeling -- Government Policy, Non-Proliferation, And The Government Fence, Harold A. Kurstedt Jr., Joel A. Nachlas
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Assessment modeling for the evaluation of plutonium as an energy resource is stressed, and generic mathematical model forms are outlined. Representative necessary objective functions are developed. Constraints and assumptions are listed. An example involving present-day light water reactor technology is demonstrated. Technical, environmental, and political implications are drawn. Specific new directions for analysis are suggested. The position of the boundary of government control and responsibility -- the government exclusion fence -- is shown to be a critical, but overlooked, constraint. Existing governmental uranium stockpiles may be an unmentioned, though important, constraint.
Convex Cones And Dentability, J. C. Hankins, R. (Roy) M. Rakestraw
Convex Cones And Dentability, J. C. Hankins, R. (Roy) M. Rakestraw
Mathematics and Statistics Faculty Research & Creative Works
No abstract provided.
On The Mann Iteration Process In A Hilbert Space, Troy L. Hicks, John D. Kubicek
On The Mann Iteration Process In A Hilbert Space, Troy L. Hicks, John D. Kubicek
Mathematics and Statistics Faculty Research & Creative Works
No abstract provided.
A Class Of Singular Neutral-Differential Systems, W. J. Fitzpatrick, L. J. Grimm
A Class Of Singular Neutral-Differential Systems, W. J. Fitzpatrick, L. J. Grimm
Mathematics and Statistics Faculty Research & Creative Works
Noetherian operator theory is used to prove an existence theorem for a singular functional-differential system. An analogue of the standard existence and uniqueness results at an ordinary point follows as a corollary. © 1977 American Mathematical Society.
Regular Singular Differential Equations Whose Conjugate Equation Has Polynomial Solutions, Leon M. Hall
Regular Singular Differential Equations Whose Conjugate Equation Has Polynomial Solutions, Leon M. Hall
Mathematics and Statistics Faculty Research & Creative Works
Consider the n -dimensional singular differential system defined by the operator $L:(Ly)(z) = z^p y'(z) + A(z)y(z)$, where z is a complex variable and p is a positive integer. The solvability of the nonhomogeneous system $Ly = g$ depends on the solutions of the homogeneous conjugate system, $L^ * f = 0$, where $L^ * $ is the operator conjugate to L. We show that $L^ * f = 0$ has polynomial solutions if the constant matrix in the series expansion of $A(z)$ has at least one nonpositive integer eigenvalue. Also, we show that if $L^ * f = 0$ …
Dynamic Pullout Resistance Of Anchors Buried In Dry Sand, Chris John Veesaert
Dynamic Pullout Resistance Of Anchors Buried In Dry Sand, Chris John Veesaert
Masters Theses
"The vertical pullout resistance of buried anchors subjected to dynamic loading was investigated by means of a laboratory model study. A dry uniformly graded sand, compacted by vibration to 92% of its relative density, was used as the test medium. Tests were performed in a 24-inch square tank using 3.0 and 5.0-inch diameter half and full-anchors. The anchors were tested at depths ranging from 5.0 to 21.0 inches.
It was assumed that the dynamic failure mechanism of earth anchors was the same as the static failure mode, and not distinct behavior. Thus static tests, i.e., tests using a constant strain …
Geology Of The Stateline District, Utah-Nevada, Terry Moore Collins
Geology Of The Stateline District, Utah-Nevada, Terry Moore Collins
Masters Theses
"The rocks exposed in the Stateline District, Iron County, Utah and Lincoln County, Nevada, are Tertiary volcanics, which serve as hosts for gold and silver bearing quartz veins. The Miocene rhyolites and dellenites, a possible caldera, cupola-associated rock textures, and the faults and styles of deformations indicate the geologic setting of Stateline is in harmony with the tectonic framework of the southern Great Basin. Four map units, subdivided into nine members, are recognized. X-ray fluorescence analyses for SiO₂, TiO₂, Fe₂O₃, CaO, and K₂O differentiated the map units, while variations in the primary quartz, sanadine, plagioclase, biotite, hornblende, and total crystal …
Lower Mississippian Sedimentation In Northwestern Montana, Forest E. Haines
Lower Mississippian Sedimentation In Northwestern Montana, Forest E. Haines
Doctoral Dissertations
"Thirty-three measured sections, nine with thin sections and insoluble residues, were studied to determine the depositional history of the Allan Mountain Limestone and the lower member of the Castle Reef Dolomite of the Madison Group in northwestern Montana.
The Allan Mountain base is a fossiliferous limestone, herein named the Brownback Gulch Member, which thickens and becomes cherty to the southwest where the section at Lone Butte resembles that of the Bridger Range Waulsortian-type reefs. A crinoidal lag deposit marks a dis- conformity at the top. In the overlying silty limestone member a thin black shale (Unit 1) grades into normal …
Theoretical And Experimental Investigation Of Oil Recovery By The Electrothermic Technique, Samy Abdel-Hakeem El-Feky
Theoretical And Experimental Investigation Of Oil Recovery By The Electrothermic Technique, Samy Abdel-Hakeem El-Feky
Doctoral Dissertations
"This work investigates the feasibility of increasing oil recovery from petroleum reservoirs by the electrothermic technique. A mathematical model was developed for the prediction of reservoir response to heating by alternating electric current flow through the oil-bearing formations. The mathematical model was programmed in FORTRAN for solution on the IBM 370/168. The model used the finite difference technique to represent the differential equations that describe the system, and the sets of difference equations were solved by the Strongly Implicit Procedure (SIP) and Successive Overrelaxation (SOR).
In order to verify the mathematical model, a set of experiments was conducted to determine …
Final-State Effects In Carbon Auger Spectra Of Transition-Metal Carbides, M. A. Smith, L. L. Levenson
Final-State Effects In Carbon Auger Spectra Of Transition-Metal Carbides, M. A. Smith, L. L. Levenson
Physics Faculty Research & Creative Works
The carbon Auger spectra of TiC, VC, and Cr3C2 are measured with a resolution of 1.2 eV. Background subtraction is performed, and a deconvolution technique is used to remove energy-dependent broadening from the spectra. An analysis of the data in terms of density-of-states calculations, x-ray emission work, and x-ray photoelectron data shows that final-state effects dominate the Auger spectra. For all of the carbides three peaks are identified as spectral terms resulting directly from final-state hole interactions. Other peaks appearing in the Auger spectra can be identified without final-state considerations. © 1977 The American Physical Society.
A Model For Evaluating The Effect Of Energy Reductions On Industrial Production Facilities., Eugene Dale Manning
A Model For Evaluating The Effect Of Energy Reductions On Industrial Production Facilities., Eugene Dale Manning
Masters Theses
"The Energy/Production Simulation Model (EPSM) was developed to determine the impact that energy reductions have on industrial production facilities. The total energy requirements for manufacturing activities are analyzed for their effects on important production, ii which involves accounting for energy shortages as the raw material flows through all manufacturing stages to finished product. The computer algorithm presented herein involves a feedback analysis from the viewpoint of the physical units of the plant or facility in question, and is designed to aid industrial managers in designing effective energy management programs"-- Abstract, p. ii
Signal Processing For The Multistate Myoelectric Channel, Philip A. Parker, John A. Stuller, R. N. Scott
Signal Processing For The Multistate Myoelectric Channel, Philip A. Parker, John A. Stuller, R. N. Scott
Electrical and Computer Engineering Faculty Research & Creative Works
In the Multistate Myoelectric Channel, a Single Myoelectric Signal Source is Used to Control a Multifunction Powered Prosthesis. the Selection of a Prosthesis Auction Requires a Receiver to Process the Myoelectric Signal, Contaminated with Noise, and to Decide on the Basis of the Received Signal Which Function is Desired. Thus, the Channel Dearly Presents a Problem of Choice of Receiver and of Decision Strategy. Previous Solutions to This Problem Have Been Basically Empirical. in This Paper We Seek the Optimum Receiver Where Optimum is in the Minimum Probability of Error Sense. First a Model is Developed for the Bipolar Myoelectric …
Geology Of The Southern Half Of The Stoutland, Missouri Quadrangle, Chester Encell Nichols
Geology Of The Southern Half Of The Stoutland, Missouri Quadrangle, Chester Encell Nichols
Doctoral Dissertations
"The dissertation area lies on the western flank of the Ozark uplift between Lebanon and Camdenton, Missouri. In the northwestern corner of the study area a portion of the Decaturville cryptoexplosive structure is exposed. The dominant structure outside the disturbed zone is a northwest-trending asymmetrical anticline with a subsidiary normal fault dipping southwest on the steeper southwest limb.
The area is mapped in considerable detail in order to describe subtle structural features. To overcome a problem of poor exposures, new key beds are defined which greatly increase structural control. Significant structures recognized as a result are the Dry Auglaize anticline, …
Erratum: The Internal Chemical Shift - A Key To Bonding In Aromatic Molecules. 2. Substituent Effects On Carbon-13 Magnetic Resonance Spectra Of The 1,4-Disubstituted Benzenes (Journal Of Physical Chemistry (1976) 80, (2024)), D. (Donald) W. Beistel, W. Dan Edwards
Erratum: The Internal Chemical Shift - A Key To Bonding In Aromatic Molecules. 2. Substituent Effects On Carbon-13 Magnetic Resonance Spectra Of The 1,4-Disubstituted Benzenes (Journal Of Physical Chemistry (1976) 80, (2024)), D. (Donald) W. Beistel, W. Dan Edwards
Chemistry Faculty Research & Creative Works
No abstract provided.
Note On The Van Der Waals Equation, Louis H. Lund
Note On The Van Der Waals Equation, Louis H. Lund
Physics Faculty Research & Creative Works
No abstract provided.
Geology And The Barite Potential Of The Raymond Widel Area, Cooper County, Missouri, German Francisco
Geology And The Barite Potential Of The Raymond Widel Area, Cooper County, Missouri, German Francisco
Masters Theses
"The Raymond Widel barite prospect is two miles northeast of Blackwater Town, in parts of Sections 23, 24, 25, and 26, T49N, R19W, Cooper County, Missouri. Reported in the area since the 1850's barite-galena deposits have been sporadically mined.
The Burlington-Keokuk and Warsaw formations of Mississippian age are exposed. The former is composed of coarse-grained limestone with abundant fossils, and the latter is a fossiliferous cherty limestone. These reach a thickness of over 200 feet. Local structures are not significant, but regional fold and fault structures are present outside the area.
Exploration drilling consisted of 31 drill holes ranging from …
Low Order Correction For Subsurface Contributions In Diffusion Experiments, D. Powers, Manfred Wuttig
Low Order Correction For Subsurface Contributions In Diffusion Experiments, D. Powers, Manfred Wuttig
Materials Science and Engineering Faculty Research & Creative Works
No abstract provided.
Reliability Growth Apportionment, James K. Byers
Reliability Growth Apportionment, James K. Byers
Computer Science Faculty Research & Creative Works
A method is presented for apportioning reliability growth to the subsystems that make up a system in order to achieve the required reliability at least cost. Reliability growth apportionment is handled as an s-expected cost minimization problem subject to the constraint of meeting a system reliability requirement. The problem is formulated in terms of Duane's reliability growth model and is solved using geometric programming. The method can be useful in the early stages of system design to determine subsystem reliability growth that will allow a system reliability requirement to be met, and in the latter stages of system design when …
Proton Shift Additivity And Substituent Interaction Parameters, Donald W. Beistel, Gary Chappell, W. Daniel Edwards
Proton Shift Additivity And Substituent Interaction Parameters, Donald W. Beistel, Gary Chappell, W. Daniel Edwards
Chemistry Faculty Research & Creative Works
The 4-substituted acetophenone family is characterized and its shifts are correlated with those of nine families of 1, 4-disubstituted benzenes reported previously. Then a simple mathematical model is derived to account for the proton magnetic resonance shifts within families of 1, 4-disubstituted benzenes. The model suggests that the substituents interact by σ-bond polarization. The polarization model rationalizes shift additivity and is consistent with the qualitative relationship between the number of valence electrons on a substituent and its capacity to induce shifts. © 1977, American Chemical Society. All rights reserved.
Results Of A Remedial Laboratory Program Based On A Piaget Model For Engineering And Science Freshmen, Robert Gerson
Results Of A Remedial Laboratory Program Based On A Piaget Model For Engineering And Science Freshmen, Robert Gerson
Physics Faculty Research & Creative Works
Engineering and science freshmen who enter our institution with algebra deficiencies have a very low probability of performing satisfactorily in the required college-level calculus course. Two years ago, a remedial one-semester program was conducted for 36 freshmen who were identified by an entrance examination as being weak in algebra. The course was based on the assumption that the students were "concrete" in the Piagetian sense. The main part of the course required a general physics laboratory that provided selected experiences to bridge the concrete-formal gap. After three semesters, 31% of the participants in the course were receiving grades of C …
Heisenberg Theory Of Ferromagnetism: Constant Coupling Revisited, Harry A. Brown
Heisenberg Theory Of Ferromagnetism: Constant Coupling Revisited, Harry A. Brown
Physics Faculty Research & Creative Works
The Heinsenberg theory of ferromagnetism has been treated by many types of approximations; one of the more successful is known as constant coupling. The literature constants several different ways of arriving at results like those of the constant-coupling approximation, but proofs that they are indeed equivalent are lacking in some cases. It is shown that two of these methods are equivalent for spin 1/2 and explicitly demonstrated that both yield exactly the constant-coupling results, though simpler in use and concept than the latter. Finally, it is shown that one of the two methods yields the same Curie temperatures as constant …
Interaction Of Electric And Magnetic Charges, I. Adawi
Interaction Of Electric And Magnetic Charges, I. Adawi
Physics Faculty Research & Creative Works
It is shown classically that in a head-on collision between an electric and a magnetic charge a repulsive polarization force of the form r-5 results (where r is the distance between the charges), if one (both) charge(s) is (are) assigned a finite spherical size. This force leads to a minimum distance of approach and prevents one particle from going through the other, and thus guards against the violation of the conservation of angular momentum. This polarization force is a manifestation of the diamagnetism (diaelectricity) of extended electric (magnetic) charges. © 1977 The American Physical Society.
Light Emission From Atom Beam - Plasma Interactions, Kaare J. Nygaard
Light Emission From Atom Beam - Plasma Interactions, Kaare J. Nygaard
Physics Faculty Research & Creative Works
A beam of atoms penetrating a plasma can be considered a line source of contaminants. Atoms excited by the plasma electrons yield information about the spatially resolved electron density and temperature. The light intensity as a function of time and position along the beam can be conveniently observed with an optical multichannel analyzer Since the beam atoms are different from the plasma constituents, the method does not suffer from self-absorption. Copyright © 1977 by The Institute of Electrical and Electronics Engineers, Inc.
Valence-Band Information From The Auger Kvv Spectrum Of Graphite, M. A. Smith, L. L. Levenson
Valence-Band Information From The Auger Kvv Spectrum Of Graphite, M. A. Smith, L. L. Levenson
Physics Faculty Research & Creative Works
The Auger KVV and x-ray photoelectron valence-band spectra of atomically clean, well-ordered graphite are measured. After background subtraction is performed and a deconvolution technique is used to remove energy-dependent features from the Auger data, the transition density function is calculated for the graphite valence band. A comparison is made with other experimental work and with a density-of-states calculation. It is found that the transition density closely resembles the density of states if localized hole effects are considered. © 1977 The American Physical Society.
Surface Electromagnetic Waves With Damping. Ii. Anisotropic Media, G. S. Kovener, Ralph William Alexander, I. L. Tyler, Robert John Bell
Surface Electromagnetic Waves With Damping. Ii. Anisotropic Media, G. S. Kovener, Ralph William Alexander, I. L. Tyler, Robert John Bell
Physics Faculty Research & Creative Works
The Technique of Plotting the Attenuated-Total-Reflection (ATR) Reflectance as a Function of Both Frequency and Incident Angle using a Three-Dimensional Plot is Applied to Surface Electromagnetic Waves (SEW) in a Uniaxial Material, MnF2. It is Shown that Dispersion Curves Calculated Without Absorption Do Not Completely Describe the ATR Reflectivity. Experimental Data Confirming the Reflectance Surface Features Are Presented. Also, Additional Minima in the Reflectance Surface Not Associated with SEW Are Discussed. © 1977 the American Physical Society.
Strict Convexity In Locally Convex Spaces And Fixed Point Theorems In Generalized Hilbert Spaces, Ed Wilburn Huffman
Strict Convexity In Locally Convex Spaces And Fixed Point Theorems In Generalized Hilbert Spaces, Ed Wilburn Huffman
Doctoral Dissertations
"A new definition of strict convexity is introduced for locally convex spaces. Examples are given and several characterizations of strict convexity are established for locally convex spaces whose generating family of semi norms satisfies the parallelogram law.
Some fundamental fixed-point theorems are proved for locally convex spaces whose generating family of semi norms satisfies the parallelogram law. Other fixed-point theorems are proved for strictly convex locally convex spaces which are also F-spaces"-- Abstract, p. ii