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Creator | Title | Description | Subject | Date |
| 51 |
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Clayton, Dale H. | Testing species limits of non-echolocating Philippine swiftlets (Collocalia spp.) using molecular genetic data | Swiftlets are small, insectivorous birds that are distributed from the Indian Ocean, through southeast Asia and north Australia, to the Pacific. About 22 species of swiflets nest in caves or other dark places, where they navigate using a crude form of echolocation (Chantler and Driessens 1995). Thr... | | 2000 |
| 52 |
 |
Wight, Charles Albert | Thermal analysis of high explosives: liquid state decomposition of RDX | Nonisothermal thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) have been applied to the thermal decomposition of RDX. Model-free isoconversional analysis of TGA and DSC traces show that RDX primarily evaporates in an open pan with an activation energy of Eα -100 kJ ... | RDX; Plastic explosives; Decomposition; Thermogravimetric analysis; Differential scanning calorimetry | 2000 |
| 53 |
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Truong, Thanh | Thermal rate constants of the NO2 fission reaction of gas phase ?-HMX: a direct ab initio dynamics study | The NO2 fission reaction of gas phase ?-HMX has been studied using a direct ab initio method within the framework of microcanonical variational transition state theory (?VT). The potential energy calculations were calculated using the hybrid nonlocal B3LYP density functional theory with the cc-pVDZ ... | HMX; Fission reaction; Thermal rate constants; Microcanonical variational transition state theory | 2000 |
| 54 |
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Miller, Joel Steven | Three-dimensional network-structured cyanide-based magnets | Introduction Magnets based on metal oxides have been important for hundreds of years. Magnetite, Fe3O4, Co-doped (y)-Fe2O3, and CrO2 are important examples. The oxide (O2-) bridge between the magnetic metal ions has filled p orbitals (Figure 1a) that provide the pathway for strong spin coup... | Magnetic; Ferrimagnetic; Magnetization | 2000 |
| 55 |
 |
Goller, Franz | Tracheal length changes and upper vocal tract resonances during zebra finch song | Upper vocal tract resonances in singing birds could be modified by beak opening, laryngeal adjustments and tracheal length changes. | Sonomicrometry; Syringeal; Tracheal shortening | 2000 |
| 56 |
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Sperry, John S. | Vulnerability to xylem cavitation and the distribution of sonoran desert vegetation | We studied 15 riparian and upland Sonoran desert species to evaluate how the limitation of xylem pressure (Vx) by cavitation corresponded with plant distribution along a moisture gradient. Riparian species were obligate riparian trees (Fraxinus velutina, Populus fremontii, and Salix gooddingii), nat... | Comparative approach; species distribution; xylem conducting efficency | 2000 |
| 57 |
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Ehleringer, James R. | Water and nitrogen uptake patterns following moisture pulses in a cold desert community | Variation in the ability to utilize pulses of both water and nitrogen (N) is one possible mechanism allowing the coexistence of species in the cold desert community on the Colorado Plateau. We simulated 25-mm precipitation events and used stable isotope tracers (2H and 15N) to follow water and N upt... | Colorado Plateau; Desert perennials; Nitrogen uptake patterns; Pulse utilization; Resource partitioning; Stable isotopes; Water uptake patterns | 2000 |
