Digital Commons Network^™

Anomalous Codeposition Of Fe-Ni Alloys And Fe-Ni-Sio2 Composites Under Potentiostatic Conditions, M. Ramasubramanian, S. N. Popova, Branko N. Popov, Ralph E. White, K. M. Yin

Faculty Publications

A mathematical model has been developed to describe the electrodeposition of Fe-Ni alloys and Fe-Ni-SiO₂ composites under potentiostatic conditions. This model can be used to predict the polarization behavior, partial current densities, and alloy composition of each of the components as a function of the applied potential. Fe-Ni-SiO₂ samples were deposited on platinum rotating disk electrodes from sulfate electrolytes under potentiostatic conditions, and the results obtained were compared to the model. The model predictions were found to agree well with the experimental observations for the Fe-Ni and Fe-Ni-SiO₂ systems.

Determination Of Transport And Electrochemical Kinetic Parameters Of Bare And Copper-Coated Lani4.27Sn0.24 Electrodes In Alkaline Solution, G. Zheng, Branko N. Popov, Ralph E. White

Faculty Publications

Electrochemical properties of bare and copper-coated LaNi_4.27Sn_0.24 electrodes were investigated in alkaline solution. The exchange current density, polarization resistance, and equilibrium potential were determined as functions of the state of charge in the electrodes. The symmetry factors for bare and copper-coated electrodes were estimated to be 0.53 and 0.52, respectively. By using a constant current discharge technique, the hydrogen diffusion coefficient in bare and coated LaNi_4.27Sn_0.24 was estimated to be 6.75 × 10^–11 cm²/s.

Application Of Porous Electrode Theory On Metal Hydride Electrodes In Alkaline Solution, G. Zheng, Branko N. Popov, Ralph E. White

Faculty Publications

Porous electrode theory was applied to estimate the exchange current density, the polarization resistance, and symmetry factor for LaNi_4.27Sn_0.24 hydride electrode in alkaline solution. The exchange current density, polarization resistance, and symmetry factor were determined from polarization curves which were obtained at low overpotentials.

Linear Algebra Used To Determine Independent Half‐Cell Equations, D. H. Coleman, Ralph E. White

Faculty Publications

No abstract provided.

Use Of A Hydrogen Anode For Nitrate Waste Destruction, E. E. Kalu, Ralph E. White, D. T. Hobbs

Faculty Publications

No abstract provided.

A Model For The Galvanostatic Deposition Of Nickel Hydroxide, Mahesh Murthy, Gowri S. Nagarajan, John W. Weidner, John W. Van Zee

Faculty Publications

A mathematical model is presented for the galvanostatic deposition of Ni(OH)₂ films in stagnant Ni(NO₃)₂ solutions. The objective is to quantify the anomalous deposition behavior reported previously in which the utilization of the electrochemically generated OH^– species decreased drastically as the concentration of Ni(NO₃)₂ increased beyond 0.1 M. For example as the Ni(NO₃)₂ concentration increased from 0.1 to 2.0 M, the deposition rate decreased by a factor of ten at 2.5 mA/cm². At this high ratio of concentration to current density, a comparison with Faraday's …

Analysis Of Transient Hydrogen Uptake By Metal Alloy Particles, Wenlin Zhang, Supramaniam Srinivasan, Harry J. Ploehn

Faculty Publications

This paper describes a new approach to solving the equations comprising the shrinking core model for diffusion and reaction of a chemical species in a solid spherical particle. The reactant adsorbs on the particle surface, diffuses into the particle's interior, and reacts with the particle to form a solid product. The shrinking core model assumes a fast reaction rate compared to reactant diffusion so that the reaction is localized in the interfacial zone between the unreacted solid core and the surrounding shell of reacted product. Analytical solutions of the governing conservation equations usually invoke the pseudo-steady state (PSS) approximation which …

Aerodynamic Mechanisms Underlying Treatment-Related Changes In Vocal Intensity In Patients With Parkinson Disease, Christopher Dromey, Lorraine Olson Ramig

Faculty Publications

The purpose of this study was to document changes in aerodynamic and glottographic aspects of vocal function in patients with Parkinson disease who received two forms of high effort treatment. Previous reports (Ramig, Countryman, Thompson, & Horii, 1995) have documented increased sound pressure level (SPL) following treatment that trained phonation and respiration (Lee Silverman Voice Treatment: LSVT), but not for treatment that trained respiration only (R). In order to examine the mechanisms underlying these differences, measures of maximum flow declination rate (MFDR) and estimated subglottal pressure (Psub)were made before and after treatment. A measure of relative vocal fold adduction (EGGW) …

The Psychological Status Of Phonological Analyses, David Eddington

Faculty Publications

This paper casts doubt on the psychological relevance of many phonological analyses. There are four reasons for this: 1) theoretical adequacy does not necessarily imply psychological significance; 2) most approaches are nonempirical in that they are not subject to potential spatiotemporal falsification; 3) phonological analyses are established with little or no recourse to the speakers of the language via experimental psychology; 4) the limited base of evidence which most analyses are founded on is further cause for skepticism.

Preaching To The Public School Choir: The Establishment Clause, Rachel Bauchman, And The Search For The Elusive Bright Line, Julian R. Kossow

Faculty Publications

No abstract provided.

Government Lawyers And The New Deal, Neal Devins

Faculty Publications

No abstract provided.

The Need To Reform The "Acceptance Of Responsibility" Adjustment, Michael M. O'Hear

Faculty Publications

No abstract provided.

Understanding Communication In Second Language Classrooms, B Kumaravadivelu

Faculty Publications

No abstract provided.

Tracking The Transition To A Flexible Access Library Program In Two Library Power Schools, Donna M. Shannon

Faculty Publications

No abstract provided.

Diphthongization In Spanish Derivational Morphology: An Empirical Investigation, David Eddington

Faculty Publications

The alternation between the mid-vowels / e/, /o/ and the diphthongs /je/ and /we/ is widespread in Spanish, and several rule-based analyses claim to account for it. However, they are founded on a small body of evidence. These analyses are evaluated against data from a large corpus, and cannot account for the non-discrete nature of diphthongization as evidenced in the corpus. The corpus data suggest that diphthongization has a gradient relationship to the derivational suffixes. · A nonderivational account, based on Bybee's model (1985, 1988, 1991), better embodies the scalar relationship between diphthongization and the suffixes. This relationship was tested …

Classroom Teacher Cadres: A Partnership Between Agencies That Is Designed To Inspire And Model "Best Teaching/Learning Practices" For Student Teachers, Richard G. Stahlhut, Richard R. Hawkes

Faculty Publications

This paper describes how the University of Northern Iowa constructed formal networks that increased communications with public school practitioners and infused new ideas into the teacher training program. Faculty in the Office of Student Field Experience decided all regional campuses of the university should provide some common experiences for teacher trainees; including not only a common core curriculum; but similar structures for delivery as well. The core curriculum was built on five ingredients: teaching experiences; seminars; journals; conferences; and action research projects. Each regional partnership agreed to arrange pre-student teaching field experiences and a semester of student teaching; as well …

Putrescine: A Marker Of Stress In Red Spruce Trees, Rakesh Minocha, Walter C. Shortle, Gregory B. Lawrence, Mark B. David, Subhash C. Minocha

Faculty Publications

Aluminum (Al) has been suggested to be an important stress factor in forest decline due to its mobilization in soil following atmospheric deposition of acidic pollutants. A major goal of our research is to develop physiological and biochemical markers of stress in trees using cell cultures and whole plants. Needles of red spruce (Picea rubens) collected from several sites in the northeastern United States and red spruce cells grown in suspension cultures were examined for polyamine and inorganic-ion content. The cells in culture were exposed to various concentrations of Al for different lengths of time. Exposure to Al increased putrescine …

On The Information Content Of Calls Of Convertible Securities, Anthony K. Byrd, William T. Moore

Faculty Publications

Negative stock price reactions to conversion-forcing calls of convertible bonds and preferred stocks are reexamined, and most of the sample firms are shown to exhibit full price recovery by the end of the conversion period. In addition, analysts' earnings forecasts, both short-term and long-term, are found to be revised upward following call announcements for convertible bonds and preferred stocks. The combined findings cast doubt on the established belief that such capital structure decisions signal negative information about firm value.

1996-97 Supreme Court Preview: Mock Arguments In Clinton V. Jones, Michael J. Gerhardt, Rodney A. Smolla

Faculty Publications

No abstract provided.

The Effect Of Treaties And Other Formal International Acts On The Customary Law Of Human Rights, Arthur M. Weisburd

Faculty Publications

No abstract provided.

Geographically Sexual?: Advancing Lesbian And Gay Interests Through Proportional Representation, Darren Rosenblum

Faculty Publications

(Excerpt)

In the 1993 New York City School Board elections, a system of proportional representation allowed lesbians and gay men to elect representatives of their choice. In response to the School Board's plan to introduce the Children of the Rainbow Curriculum, the New York City chapter of the Christian Coalition, an organization of the Christian Right, began an opposition campaign with the slogan "No Sodom on the Hudson" that pitted parents of color against so-called “rich white gays.” Having succeeded in forcing the school chancellor's resignation, the Christian Coalition formulated a plan for the takeover of all New York City …

Common Schools, Uncommon Values: Listening To The Voices Of Dissent, Rosemary C. Salomone

Faculty Publications

(Excerpt)

Education in America as we know it today draws its origins from the philosophical perspectives and political objectives of the common school reformers over a century ago. For them, mass education was a primary vehicle for defining ourselves as a nation. Schools would develop civic virtue and a national character through a shared set of values reflected in the school curriculum. The common school experience, offered to all regardless of social class or ethnic background, would assimilate the hordes of immigrants coming to our shores and meet the emerging needs of industrialization. Individuals across the economic spectrum, afforded education …

When Judges Are Gatekeepers: Democracy, Morality, Status, And Empathy In Duty Decisions (Help From Ordinary Citizens), Cheryl L. Wade

Faculty Publications

(Excerpt)

Imagine that you are eighteen and you have just graduated from high school. Even though you have no cognitive disability and have spent twelve years of your life attending public schools, you are functionally illiterate. If your predicament was caused by negligent educators, your action for educational malpractice would be called a "failure to educate" case and it would be denied.

Or, imagine that you enter a public school kindergarten class and you are examined by the school's psychologist. On the basis of a verbal intelligence test, the psychologist concludes that you are mentally retarded. In reality, you have …

A Quasi-One-Dimensional Theory For Anisotropic Propagation Of Excitation In Cardiac Muscle, Jiashin Wu, Edward A. Johnson, J. Mailen Kootsey

Faculty Publications

It has been shown that propagation of excitation in cardiac muscle is anisotropic. Compared to propagation at right angles to the long axes of the fibers, propagation along the long axis is faster, the extracellular action potential (AP) is larger in amplitude, and the intracellular AP has a lower maximum rate of depolarization, a larger time constant of the foot, and a lower peak amplitude. These observations are contrary to the predictions of classical one-dimensional (1-D) cable theory and, thus far, no satisfactory theory for them has been reported. As an alternative description of propagation in cardiac muscle, this study …

The Children We Abandon: Religious Exemptions To Child Welfare And Education Law As Denials Of Equal Protection To Children Of Religious Objectors, James G. Dwyer

Faculty Publications

The story of children who die because their parents, in observance of their own religious principles, withhold conventional medical treatment from them is a familiar one. In this Article, James G. Dwyer shows that the phenomenon of parents denying secular benefits to their children for religious reasons goes far beyond these few highly publicized cases, extending into the realm of education as well as medical care. Moreover, Dr. Dwyer shows that the federal and state governments endorse this practice by statutorily exempting 'religious objector' parents from otherwise generally applicable compulsory child care and education laws. He argues that courts addressing …

Congressional-Executive Information Access Disputes: A Modest Proposal - Do Nothing, Neal Devins

Faculty Publications

No abstract provided.

Review Of Friedrich Dürrenmatt, By Gerhard P. Knapp, Romey Sabalius

Faculty Publications

No abstract provided.

Religion And Racism: An Examination Of Values And Racial Attitudes, Timothy B. Smith, Richard N. Roberts

Faculty Publications

Throughout history, both the oppression and emancipation of racial and ethnic groups have often been conducted under the influence of religion. Contemporary research, often marked by contradictions itself, has also made note of this complex issue. To examine further the association of religious variables with racial attitudes and personal values, data were collected from 752 subjects. The results lent support to the hypothesis that when examining racial attitudes, religious affiliation is a less meaningful variable than the importance of spirituality in the lives of individuals; also, two values historically associated with religion, Humanitarianism and the "Protestant work ethic" were moderately …

Methazolamide For Essential Voice Tremor, Christopher Dromey, Karen Busenbark, L Ramig, William C. Koller

Faculty Publications

We studied the safety and efficacy of methazolamide (average dose 168 mg/day) in a placebo-controlled blinded investigation in nine patients with essential voice tremor. There were no significant differences for physician or patient clinical rating scores. Digital audio tape recordings showed no difference for amplitude modulation, but frequency modulation was significantly altered by methazolamide. Side effects were common with the drug. We conclude that methazolamide has limited usefulness in the treatment of essential voice tremor.

The Parkinson Larynx: Tremor And Videostroboscopic Findings, Christopher Dromey, Kathe S. Perez, Lorraine Olson Ramig, Marshall E. Smith

Faculty Publications

Summary: Patients with Parkinson's disease have a high incidence of speech, voice, and laryngeal abnormalities. To characterize laryngeal abnormalities, visual-perceptual ratings of endoscopic and stroboscopic examinations of 22 patients diagnosed with idiopathic Parkinson's disease and 7 patients with Parkinson's-plus syndromes were carried out by four trained viewers. Incidence of tremor, tremor location, phase closure, phase symmetry, amplitude, and mucosal waveform were scored. Tremor was observed in one or more of these conditions--rest, normal pitch and loudness, or loud phonation--for most of the 29 patients. Fifty-five percent of the idiopathic Parkinson's disease patients had tremor, with the primary location being vertical …