UScholar Works
 
Filters: Date: "1989" Collection: "ir_uspace"
76 - 100 of 93
Number of results to display per page
CreatorTitleDescriptionSubjectDate
76 Angelucci, AlessandraSegregation and overlap of callosal and association neurons in frontal and parietal cortices of primates: a spectral and coherency analysis.The spatial relations between selected classes of association and callosal neurons were studied in the frontal and parietal lobes of the macaque monkey using retrogradely transported fluorescent dyes. Fast blue and nuclear yellow were injected in the left frontal (areas 4 and 6) and right posterior ...Macaca fascicularis; Parietal Lobe; Neurons1989
77 Jarrard, Richard D.Seismic stratigraphy and history of deep circulation and sediment drift development in Baffin Bay and the Labrador SeaDrilling results and seismic-reflection records at and across Ocean Drilling Program (ODP) Sites 645 (western Baffin Bay), 646, and 647 (Labrador Sea) provide important constraints on the history of deep-water circulation and sedimentation in response to Cenozoic climatic change, as well as the tect...1989
78 Miller, Jan D.Selective flotation of fossil resin from Wasatch Plateau high-volatile bituminous coalCertain bituminous coals are known to contain appreciable quantities of natural fossil or subfossil resin. Such resinous coals are found in the western US, particularly the Wasatch Plateau coalfield of UT. Some of the seams in this field contain an average of 5% resin. This fossil resin has been r...Bituminous coal; Wasatch Plateau; Resin1989
79 Carter, Tony M.The set theory of arithmetic decompositionThe Set Theory of Arithmetic Decomposition is a method for designing complex addition/ subtraction circuits at any radix using strictly positional, sign-local number systems. The specification of an addition circuit is simply an equation that describes the inputs and the outputs as weighted digit se...Arithmetic decomposition; Addition/ subtraction circuits1989
80 Normann, Richard A.; Kolb, Helga; Lasater, Eric M.Signal integration at the pedicle of turtle cone photoreceptors: an anatomical and electrophysiological studyThe morphology of the axon which connects the cell body and pedicle of turtle cone photoreceptors was studied by light and electron microscopy. The axon which contains numerous synaptic vesicles, some endoplasmic reticulum, and a few cisternae is basically filled with cytoplasm. The length of the ax...Cone Photoreceptor, Voltage Clamp; Isolated Cells; Input Resistance; Cell Body-Pedicle Coupling1989
81 Bohs, Lynn A.Solanum allophyllum (Miers) Standl. and the generic delimitation of Cyphomandra and Solanum (Solanaceae)Solanum allophyllum has previously been placed in Cyphomandra and in Solarium. This species has a number of morphological features not found in Cyphomandra, but has been included in the genus because it has a similar growth habit, three-leaved sympodial units with inflorescences in branch forks, and...Solanum allophyllum; Cyphomandra1989
82 Miller, Joel Steven; Epstein, Arthur J.Specific heat of decamethylferrocenium tetracyanoethanide (DMeFc)(TCNE)We report the specific heat C(T) of (DMeFc)(TCNE) for temperatures 3 K < T < 50 K. We observe an anomaly at Tc-4.82 K corresponding to a transition to a three-dimensional (3D) macroscopic ferromagnet. A broad maximum at = 15 K corresponds to an exchange interaction of J = 35 K along the chain axis. ...Temperature; Ferromagnetic; Magnetic1989
83 Morse, Michael DavidSpectroscopy and electronic structure of jet-cooled GaAsAn optical spectrum, obtained by resonant two-photon ionization spectroscopy, is reported for jet-cooled diatomic gallium arsenide. The ground state is identified as X??-, deriving from a ??rr? molecular configuration, and is characterized by ?" = 215 cm-1, ?"exe" = 3 cm-1, and r0' = 2.53 ? 0.02 ?. ...1989
84 Armentrout, Peter B.Spin-orbit state-selected reactions of Xe+(2P3/2 and 2P1/2) with H2, D2, and HDSpin-orbit state-selected reactions of X e + (2Pj ), j = 3/2 and 1/2, with isotopic molecular hydrogen (H2 , D2 , and HD) to form X e H + and XeD + are studied using guided ion beam mass spectrometry. Reaction cross sections are determined as a function of reactant kinetic energy from near thermal ...Spin-orbit; Xenon ions; Hydrogen isotopes; Isotope effects; Ion-molecule reactions1989
85 Gardner, Reed M.Spirometry and Flow-Volume CurvesBiomedical Informatics1989
86 Horch, Kenneth W.Stability of chronic intrafascicular electrode recordingsWe have implanted intrafascicular electrodes in peripheral nerves of cats and have recorded neural activity from a small population of nerve fibers for as long as six months, suggesting that these electrodes can be used on a chronic basis to acquire information about limb position, muscle force and ...Intrafascicular electrodes; Electrode recordings1989
87 Miller, Joel StevenStructural and magnetic characterization of a- and B-2,4-hexadiyne-1,6-diyl Bis(2,2,5,5-tetramethyl-1-oxyl-3-pyrroline-3-carboxylate) and its thermal degradation productThe search for ferromagnetic organic compounds and polymers is the focus of contemporary research.1 - 5 Polymerization of di-iminoxyl diacetylene monomers has been suggested as a means to prepare a high spin potentially ferromagnetically coupled polymers3 and the thermal, photochemical, and glow di...Ferromagnetic; Magnetization; Polymers1989
88 Gu, JunStructured, technology independent VLSI designRapid advancement in new semiconductor technologies has created a need for the design of existing integrated circuits using these new technologies. These new technologies are required to provide improved performance, smaller feature sizes and lower costs. The conversion of an integrated circuit fro...VLSI design; semiconductor technologies1989
89 Johnson, Bob L.Toward a synthesis of inquiry on environmental robustnessOur approach has emphasized the development of ideas over the systematic criticism of specific studies. Perhaps some may view these ideas as useful starting points for new inquiry. The least we might expect from such inquiry is a better understanding of why some students and teachers claim that scho...Education; Schools; Boredom; Robustness1989
90 Brunvand, Erik L.Translating concurrent programs into delay-insensitive circuitsPrograms written in a subset of occam are automatically translated into delay-insensitive circuits using syntax-directed techniques. The resulting circuits are improved using semantics-preserving circuit-to-circuit transformations. Since each step of the translation process can be proven correct, th...1989
91 Horch, Kenneth W.Unit analysis in composite neural recordingsWe have used threshold level, sinusoidal stimuli to selectively elicit phase-locked activity from cutaneous mechanoreceptors, for the purpose of evaluating single unit activity in multi-unit peripheral nerve recordings. Each receptor is characterized by its response to a range of mechanical stimuli ...Neural recordings; Nerve fibers; Cutaneous mechanoreceptors1989
92 Jarrard, Richard D.Velocity and density of sediments of Eirik Ridge, Labrador Sea: control by porosity and mineralogyA 767-m section of late Neogene (0-8 Ma) terrigenous sediments was cored at Ocean Drilling Program (ODP) Site 646. Continuous downhole geophysical logs, 161 laboratory measurements of core porosity and density, and 63 laboratory measurements of core velocity are used to analyze in detail the effects...1989
93 McDaniel, SusanWomen inventors in Canada: research and interventionWhat is an inventor or an invention? In this essay, we use the definition of the Canadian Patent Act, which considers a patentable invention to be a new or improved product or process or a new application of an existing product or process. An invention must be technically feasible - it must -"work" ...Patent; Inventions; Creativity1989
76 - 100 of 93