33 research outputs found
Changes in maintenance energy requirements of mature sheep fed at different levels of feed intake at maintenance, during weight loss and realimentation
UNICEF assisted Wanging'ombe projects: Gravity water supply and rural sanitation
UNICEF assisted Wanging'ombe projects: Gravity water supply and rural sanitatio
UNICEF assisted Wanging'ombe projects: Gravity water supply and rural sanitation
UNICEF assisted Wanging'ombe projects: Gravity water supply and rural sanitatio
The Conterminous United States Mineral Appraisal Program; background information to accompany folio of geologic, geochemical, geophysical, and mineral resources maps of the Medford 1 degree x 2 degrees Quadrangle, Oregon and California
Trace element contents in the bone as an age and sex indicator. A case study of the necropolis of “S'Illot des Porros” (Spain)
P62 Long term endurance training and deconditioning in patients with mitochondrial myopathy
P60 Expanding the phenotypic and genotypic spectrum of adult RRM2B-related mitochondrial disease
The Equilibrium Vapor Pressures of Ammonia and Oxygen Ices at Outer Solar System Temperatures
Few laboratory studies have investigated the vapor pressures of the volatiles that may be present as ices in the outer solar system; even fewer studies have investigated these species at the temperatures and pressures suitable to the surfaces of icy bodies in the Saturnian and Uranian systems (<100 K, <10-9 bar). This study adds to the work of Grundy et al. (2024) in extending the known equilibrium vapor pressures of outer solar system ices through laboratory investigations at very low temperatures. Our experiments with ammonia and oxygen ices provide new thermodynamic models for these species’ respective enthalpies of sublimation. We find that
ammonia ice, and to a lesser degree oxygen ice, are stable at higher temperatures than extrapolations in previous literature have predicted. Our results show that these ices should be
retained over longer periods of time than previous extrapolations would predict, and a greater amount of these solids is required to support observation in exospheres of airless bodies in the outer solar system
