Filters: Collection:"ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 151 |  | Miller, Jan D. | Treatment of cyanide by using the Mexican modification of the Merrill-Crowe process | Cyanide consumption can be a major factor which contributes to operating cost for cyanidation. Also after extraction and recovery of precious metals substancial amounts of cyanide are delivered to tailings ponds which creates environmental problems due to the toxicity of cyanides. In this regard, th... | Cyanidation; Merrill-Crowe process; air-sparged hydrocyclone; cyanide recovery; cyanide destruction; chlorine dioxide | 1999 |
| 152 |  | Wolfinger, Nicholas H. | Trends in the intergenerational transmission of divorce | Numerous researchers have shown that the children of divorce are disproportionately likely to end their own marriages (e.g., Amato 1996; Amato and Booth 1991; Bumpass, Martin, and Sweet 1991; Glenn and Kramer 1987; Kulka and Weingarten 1979; McLanahan and Bumpass 1988; Mueller and Pope 1977; Pope a... | 1999 | |
| 153 |  | Vardeny, Zeev Valentine | Ultrafast studies of laser-action in poly-(p-pherylene vinylene) films | The recent demonstration of emission spectral narrowing in ∏-conjugated polymer has stirred widespread interest to the phenomenon of laser-action in these materials. It is now generally believed that spectral narrowing in superior polymer films is caused by amplified spontaneous emission (i.e. si... | Ultrafast studies; Poly-(p-pherylene vinylene); PPV; Laser-action | 1999 |
| 154 |  | Jorgensen, Erik | UNC-11, a Caenorhabditis elegans AP180 homologue, regulates the size and protein composition of synaptic vesicles | The unc-11 gene of Caenorhabditis elegans encodes multiple isoforms of a protein homologous to the mammalian brain-specific clathrin-adaptor protein AP180. The UNC-11 protein is expressed at high levels in the nervous system and at lower levels in other tissues. In neurons, UNC-11 is enriched at pr... | Caenorhabditis elegans; Synaptic vesicles; unc-11; Synaptobrevin; Endocytosis | 1999 |
| 155 |  | Shirley, Peter S.; Thompson, William B. | The use of subtle illumination cues for human judgement of spatial layout | The interaction of light with surfaces creates complex lighting effects that provide potentially useful information about the spatial relationships between objects. Previous research has shown cast shadows to be effective in determining the 3D layout of a scene. Interreflections are another are anot... | spatial relationships; Subtle illumination; Lighting effects; interreflection | 1999 |
| 156 |  | Carter, John B. | Using khazana to support distributed application development | One of the most important services required by most distributed applications is some form of shared data management, e.g., a directory service manages shared directory entries while groupware manages shared documents. Each such application currently must implement its own data management mechanisms,... | Khazana; Distributed applications; Development | 1999 |
| 157 |  | Wright, Kristin | Using reliable multicast for caching and collaboration within the world wide web | The World Wide Web has become an important medium for information dissemination. One model for synchronized information dissemination within the Web is webcasting in which data are simultaneously distributed to multiple destinations. The Web's traditional unicast client/server communication model su... | caching; collaboration | 1999 |
| 158 |  | Myers, Chris J. | Verification of delayed-reset domino circuits using ATACS | This paper discusses the application of the timing analysis tool ATACS to the high performance, self-resetting and delayed-reset domino circuits being designed at IBM's Austin Research Laboratory. The tool, which was originally developed to deal with asynchronous circuits, is well suited to the se... | 1999 | |
| 159 |  | Kowaleski-Jones, Lori | Welfare receipt and family structure: evaluating the effects on children's reading achievement | This paper examines the impact of public and private support system on cognitive outcomes for children born to adolescent mothers. The data for this analysis were drawn from the 1979 to 1988 rounds of the National Longitudinal Surrey of Youth between the ages of six and ten in 1988. The key inputs... | Adolescent mothers; Child development; Public support | 1999 |
| 160 |  | Gardner, Reed M. | Y2K: Need for Health Care Professionals to be Responsible and Prepared | Biomedical Informatics | 1999 | |
| 161 |  | Olson, Randall J.; Crandall, Alan S.; Pingree, Michael F. | Cataract surgery complications in 1 year at an academic institution | PURPOSE: To delineate all complication rates of cataract surgery and define normative rates, trends, and outliers as part of continuous quality management. SETTING: John A. Moran Eye Center, University of Utah Health Sciences Center, Salt Lake City, Utah, USA. METHODS: All cataract surgeries done at... | Intraoperative Complications/Epidemiology; Adverse Effects; Cataract Surgery | 1999-05 |
| 162 |  | Gondolo, Paolo | Clumpy neutralino dark matter | We investigate the possibility to detect neutralino dark matter in a scenario in which the galactic dark halo is clumpy. We find that under customary assumptions on various astrophysical parameters, the antiproton and continuum γ-ray signals from neutralino annihilation in the halo put the strong... | Neutralinos; Clumpiness | 1999-01 |
| 163 |  | Olson, Randall J. | Comparison of the effects of viscoelastic agents on clinical properties of the Unfolder lens injection system | PURPOSE: To evaluate the effect of 7 viscoelastic materials on the physical properties of the Unfolder lens injection system. SETTING: John A. Moran Eye Center, University of Utah School of Medicine, Salt Lake City, Utah, USA. METHODS: New sterile SI-40NB intraocular lenses (IOLs) were loaded into t... | Lenses, Intraocular; Materials Testing; Hyaluronic Acid; Equipment Failure Analysis | 1999-07 |
| 164 |  | Riloff, Ellen M. | Corpus-based bootstrapping algorithm for semi-automated semantic lexicon construction | Many applications need a lexicon that represents semantic information but acquiring lexical information is time consuming. We present a corpus-based bootstrapping algorithm that assists users in creating domain-specifi c semantic lexicons quickly. Our algorithm uses a representative text corpus for ... | Bootstrapping algorithm; Lexicon construction | 1999-06 |
| 165 |  | Gondolo, Paolo | Dark matter annihilation at the galactic center | Cold dark matter near the galactic center is accreted by the central black hole into a dense spike. Particle dark matter annihilation makes the spike a compact source of photons, electrons, positrons, protons, antiprotons, and neutrinos. The spike luminosity depends on the halo density profile: halo... | Neutralinos; Neutrino flux | 1999-08 |
| 166 |  | Gerton, Jordan | Dipolar relaxation collisions in magnetically trapped 7Li | We report the measurement of the rate constant for dipolar relaxation from the (F=2, mF=2) hyperfine state of 7Li. The atoms are confined in a permanent magnet trap at a field of 10^3 G. The measured value of (1.05±0.10)X10^-14 cm3/s agrees well with theory. Additionally, we determine an upper bo... | 1999-02 | |
| 167 |  | Vardeny, Zeev Valentine | Electromodulation of charge-transfer photoexcitations in pristine and C60-doped conjugated polymers | We study the effect of an electric field of up to 100 kV/cm on photoexcitations in pristine and C60-doped p-conjugated polymers by electromodulated photoinduced absorption (EPA). In EPA, we measure changes in the photoinduced absorption of a polymer film induced by an electric field. The dominant ... | Electromodulation; Charge-transfer photoexcitations; Photoinduced absorption; pi-conjugated polymers; Electromodulation spectroscopy | 1999-04 |
| 168 |  | Tiwari, Ashutosh | Electron tunneling experiments on La0.7A0.3MnO3 (A=Ca, Sr, Ba) | Tunneling conductance measurements of the electronic density of states of perovskite manganates, La0.7A0.3MnO3 are reported. Tunneling data of all the samples show a zero-bias anomaly with a minimum in the density of states at the Fermi level. This behavior is interpreted as arising from strong elec... | Perovskite manganates; Tunneling conductance | 1999-10 |
| 169 |  | Mishchenko, Eugene | Electron-lattice kinetics of metals heated by ultrashort laser pulses | We propose a kinetic model of transient nonequilibrium phenomena in metals exposed to ultrashort laser pulses when heated electrons affect the lattice through direct electron-phonon interaction. This model describes the destruction of a metal under intense laser pumping. We derive the system of equa... | Electron-lattice kinetics; Thermoconductivity; electron temperature; Lattice deformation | 1999-01 |
| 170 |  | Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. | Excitation dynamics in disubstituted polyacetylene | We studied the excitation dynamics in films of disubstituted polyacetylene, a degenerate ground-state conjugated polymer, using psec transient and steady-state spectroscopies. The polymer is found to support charged and neutral topological soliton excitations concurrent with a strong intrinsic p... | Excitation dynamics; Disubstituted polyacetylene; Laser action | 1999-05 |
| 171 |  | DeTar, Carleton | Exotic meson spectroscopy from the clover action at β = 5.85 and 6.15* | We repeat our original simulations of the hybrid meson spectrum using the clover action, as a check on lattice artifacts. Our results for the 1−+ masses do not substantially change. We present preliminary results for the wave function of the 1−+ state in Coulomb gauge. | Clover action; Quark spectroscopy | 1999-03 |
| 172 |  | DeTar, Carleton | Heavy-light decay constants: conclusions from the Wilson action | We report on the results of a MILC collaboration calculation of fB, fBs , fD, fDs and their ratios. We discuss the most important errors in more detail than we have elsewhere. | Decay constants; Wilson action; Staggered quarks | 1999-03 |
| 173 |  | Eisenman, Patricia A. | Hormonal changes throughout the menstrual cycle and increased anterior cruciate ligament laxity in females | OBJECTIVE: To determine whether women experience significantly greater anterior cruciate ligament (ACL) laxity in conjunction with estrogen and progesterone surges during a normal 28- to 30-day menstrual cycle. DESIGN AND SETTING: Serial estrogen and progesterone levels were measured via radioimmuno... | Estrogen; Progesterone; Knee Arthrometer; Radioimmunoassay | 1999-04 |
| 174 |  | Cashdan, Elizabeth A. | How women compete | Men are more physically aggressive and more risk-prone than women, but are not necessarily more competitive. New data show the gender difference in competitiveness to be one of kind rather than degree, with women and men competing in different ways and, to some extent, over different objectives, but... | Gender differences, behavior; Competition; Aggression | 1999-06 |
| 175 |  | Mishchenko, Eugene | Kinetic theory of shot noise in nondegenerate diffusive conductors | We investigate current fluctuations in nondegenerate semiconductors, on length scales intermediate between the elastic and inelastic mean free paths. We present an exact solution of the nonlinear kinetic equations in the regime of space-charge limited conduction, without resorting to the drift app... | Shot noise; Conductors; Boltzmann equation | 1999-08 |