Browsing Faculty of Arts and Sciences by Title
Now showing items 9486-9505 of 24540
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H2 excitation in turbulent interstellar clouds
(Oxford University Press (OUP), 2005)We discuss the observational differences between lines of sight that intercept a group of turbulent dissipative structures and lines of sight that cross less-active regions. Using time-dependent calculations we show that ... -
H2CO and N2H+ in Protoplanetary Disks: Evidence for a CO-Ice Regulated Chemistry
(IOP Publishing, 2013)We present Submillimeter Array observations of H2CO and N2H+ emission in the disks around the T Tauri star TW Hya and the Herbig Ae star HD 163296 at 2"-6" resolution and discuss the distribution of these species with ... -
H2CO Distribution and Formation in the TW HYA Disk
(American Astronomical Society, 2017-04-12)H2CO is one of the most readily detected organic molecules in protoplanetary disks. Yet its distribution and dominant formation pathway(s) remain largely unconstrained. To address these issues, we present ALMA observations ... -
H2O Masers and Supersonic Turbulence
(IOP Publishing, 2002)We use unpublished and published VLBI results to investigate the geometry and the statistical properties of the velocity field traced by H2O masers in five galactic regions of star formation — Sgr B2(M), W49N, W51(MAIN), ... -
H3+ in Diffuse Interstellar Gas
(Oxford University Press (OUP), 2000)A model is constructed of the material in front of the star Cygnus OB2 no. 12 in which dense cores are embedded in diffuse clumps of gas. The model reproduces the measured abundances of Graphic C2 and CO, and predicts a ... -
The \(H_2SO_4-HNO_3-NH_3\) system at high humidities and in fogs: 2. Comparison of field data with thermodynamic calculations
(Wiley-Blackwell, 1986)Concentrations of HNO(g) and NH(g) determined in the field were compared to predictions from aerosol equilibrium models. The products of HNO(g) and NH(g) concentrations measured under cool and humid nonfoggy conditions ... -
The habenular nuclei: a conserved asymmetric relay station in the vertebrate brain
(The Royal Society, 2009)The dorsal diencephalon, or epithalamus, contains the bilaterally paired habenular nuclei and the pineal complex. The habenulae form part of the dorsal diencephalic conduction (DDC) system, a highly conserved pathway found ... -
Habitat use affects morphological diversification in dragon lizards
(Wiley-Blackwell, 2010)Habitat use may lead to variation in diversity among evolutionary lineages because habitats differ in the variety of ways they allow for species to make a living. Here, we show that structural habitats contribute to ... -
Habits of thought: Model-free reinforcement learning over cognitive operations
(2022-05-12)People often persist in doing things that they know intellectually are no longer good for them. They mindlessly take their usual route to work, even though they know it's closed for construction, or reach for their morning ... -
Habitus of the Minor: The Visuality of Inner Asians in Modern China (1930s-2010s)
(2023-06-01)The indigenous peoples inhabiting the Inner Asian regions of the Tibetan Plateau, the Mongol steppes, and Chinese Turkestan experienced the last century in a highly condensed historical trajectory. They emerged from a ... -
Hafumbukū: A Text Recognition Model for the Manchu Script
(2023-06-30)We develop a text recognition model for Manchu. -
The Haitian Declaration of Independence in an Atlantic Context
(University of Virginia Press, 2016) -
Haitian Migration and Danced Identity in Eastern Cuba
(University Press of Florida, 2010) -
Haiti’s progress in achieving its 10-year plan to eliminate cholera: hidden sickness cannot be cured
(Dove Medical Press, 2016)Since the beginning of the cholera epidemic in Haiti 5 years ago, the prevalence of this deadly water-borne disease has fallen far below the initial rates registered during its explosive outset. However, cholera continues ... -
A Half-Century of Development
(Center for International Development at Harvard University, 2005)Development as a global policy objective dates from the 1940s. Relative to expectations then, the world economy performed outstandingly well during the second half of the 20th century. Worldwide growth in average per capita ... -
Half-Cycle-Pulse-Train Induced State Redistribution of Rydberg Atoms
(American Physical Society, 2010)Population transfer between low-lying Rydberg states independent of the initial state is realized using a train of half-cycle pulses with pulse durations much shorter than the classical orbital period. We demonstrate ... -
Hall carrier density and magnetoresistance measurements in thin-film vanadium dioxide across the metal-insulator transition
(American Physical Society, 2009)Temperature-dependent magnetotransport measurements in magnetic fields of up to 12 T were performed on thin-film vanadium dioxide (VO(2)) across the metal-insulator transition (MIT). The Hall carrier density increases by ... -
Halo mass and assembly history exposed in the faint outskirts: the stellar and dark matter haloes of Illustris galaxies
(Oxford University Press, 2014)We use the Illustris simulations to gain insight into the build-up of the outer, low-surface brightness regions which surround galaxies. We characterize the stellar haloes by means of the logarithmic slope of the spherically ... -
Halofuginone: A Story of How Target Identification of an Ancient Chinese Medicine and Multi-Step Evolution Informs Malaria Drug Discovery
(2014-06-06)Malaria is a treatable communicable disease yet remains a common cause of death and disease especially among pregnant women and children. Most of malaria's worldwide burden disproportionately lies in Southeast Asia and ...