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Creator | Title | Description | Subject | Date |
| 176 |
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Bastiani, Michael | Cell-cell interactions during the migration of an identified commissural growth cone in the embryonic grasshopper | One of the fascicles of the posterior commissure of the embryonic grasshopper is pioneered by an individually identifiable neuron named Q1. Q1 initially grows along a longitudinal pathway established by another pioneer neuron, MPl, and then crosses to the midline, where it meets and fasciculates wi... | Commissure; Pathfinding; Filopodia | 1993 |
| 177 |
 |
Capecchi, Mario R. | Patterns of integration of DNA microinjected into cultured mammalian cells: evidence for homologous recombination between injected plasmid DNA molecules. | We examined the fate of DNA microinjected into nuclei of cultured mammalian cells. The sequence composition and the physical form of the vector carrying the selectable gene affected the efficiency of DNA-mediated transformation. Introduction of sequences near the simian virus 40 origin of DNA replic... | Base Sequence; Cell Line; Genes, Viral; Genetic Vectors; Mice; Microinjections | 1982-11 |
| 178 |
 |
Sperry, John S. | Size and function in conifer tracheids and angiosperm vessels | The wide size range of conifer tracheids and angiosperm vessels has important consequences for function. In both conduit types, bigger is better for conducting efficiency. The gain in efficiency with size is maximized by the control of conduit shape, which balances end-wall and lumen resistances. | Ecological wood anatomy; vascular structure and function; water transport | 2006 |
| 179 |
 |
Davidson, Diane W. | Species diversity and community organization in desert seed-eating ants | Patterns of species diversity and community organization in desert seed-eating ants were studied in 10 habitats on a longitudinal gradient of increasing rainfall extending from southeastern California, through southern Arizona, and into southwestern New Mexico. Local communities of harvester ants... | Ants; Arizona; California; Communities; Competition; Desert Granivores; Diversity; Insects; New Mexico; Novomessor; Pheidole; Pogonomyrmex; Resource allocation; Veromessor. | 1977 |
| 180 |
 |
Morse, Michael David | Spectroscopy and electronic structure of jet-cooled GaAs | An 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 |
| 181 |
 |
Davidson, Diane W. | Comparative structure of harvester ant communities in arid Australia and North America | In the Australian arid zone, the species richness of ants is greater and that of mammalian granivores is less than in North American deserts. This study aimed to determine if the structure of harvester ant communities differs from that seen in North American deserts, focussing on differences relate... | Species; Rodents; Diversity | 1988 |
| 182 |
 |
Capecchi, Mario R. | Hoxa1 lineage-tracing indicates a direct role for Hoxa1 in development of the inner ear, the heart and the third rhombomere | Loss of Hoxa1 function results in severe defects of the brainstem, inner ear and cranial ganglia in humans and mice as well as cardiovascular abnormalities in humans. Since Hoxa1 is expressed very transiently during an early embryonic stage, it has been difficult to determine whether Hoxa1 plays a d... | Hoxa1; Inner ear; Third rhombomere; Hindbrain; Hoxa1-IRES-Cre mouse; Embryonic development; Lineage-tracing | 2010 |
| 183 |
 |
Allen, Edgar S. | Sensory information processing and symbolic computation (1 Jan. 1975 - 30 June 1975) | This research uses digital computation to investigate processes, both linear and nonlinear, for the filtering. restoration, enhancement, bandwidth reduction, distortion immunization and analysis of both visual and auditory information. | Sensory information processing; Symbolic computation; Auditory information; Visual information | 1973 |
| 184 |
 |
Boll, Steven F. | Suppression of acoustic noise in speech using spectral subtraction | A stand alone noise suppression algorithm is presented for reducing the spectral effects of acoustically added noise in speech. Effective performance of digital speech processors operating in practical environments may require suppression of noise from the digital waveform. Spectral subtraction offe... | Suppression; acoustic noise; noise suppression algorithm; digital speech processors; Spectral subtraction | 1979 |
| 185 |
 |
Golden, Kenneth M. | Climate change and the mathematics of transport in sea ice | As the boundary layer between the ocean and atmosphere in the polar regions, sea ice is a critical component of the global climate system. As temperatures on Earth have warmed, the Arctic sea ice pack in particular has exhibited a dramatic decline in its summer extent. Indeed, the polar sea-ice pack... | Polar ice; Fluid flow; Complex permittivity | 2009 |
| 186 |
 |
Mattis, Daniel C. | Few-body problem on a lattice | The author explores some of the inherent simplifications of "quantum lattice physics." He distinguishes between fermions and bosons and analyzes the n-body problem for each, with n = 1,2,3... typically a small number. With delta-function (zero-range) interactions, the three-body problem on a lattice... | Quantum; Electrons; Spin | 1986 |
| 187 |
 |
Coley, Phyllis D. | Herbivory and defensive characteristics of tree species in a lowland tropical forest | Rate of herbivory and defensive characteristics of young and mature leaves were measured for saplings of 46 canopy tree species in a lowland tropical rain forest (Barro Colorado Island, Panama). Grazing rates were determined in the field for sample periods in the early wet, late wet, and dry seasons... | Fiber; Herbivory; Life history; Panama; Phenolics; Plant growth; Spatial distribution; Tannins; Temporal distribution; Treefall gaps; Tropical forest | 1983 |
| 188 |
 |
Morse, Michael David | Spectroscopy of AlAr and AlKr from 31 000 cm-1 to the ionization limit | Spectra of jet-cooled AlAr and AlKr have been collected over the range from 31 000 cm -? to the ionization limit, using the technique of resonant two-photon ionization spectroscopy with mass spectrometric detection. Adiabatic ionization potentials have been accurately measured for both molecules, an... | | 1992 |
