951 resultados para Space flight to the moon.
Resumo:
The Open Space Lands Acquisition and Development (OSLAD) grant program (525 ILCS 35/1 et. seq.), administered by the Illinois Dept. of Natural Resources, was enacted in FY86 to assist eligible local government agencies in the acquisition and/or development of lands for public outdoor recreation and resource preservation purposes.
Resumo:
[The Office of the Downfall of Babylon was at 131 Nassau St., New York.]
Resumo:
The calculations were made under the superintendence of Mr. Hugh Breen, Sen.
Resumo:
Mode of access: Internet.
Resumo:
Publisher's lettering on cover: De Quincey's Flight of a Tartar tribe.
Resumo:
Vol. 2, edited by S. C. Freden, E. P. Mercanti, and D. E. Witten, published by Goddard Space Flight Center, Greenbelt, Md.; v. 3, edited by S. C. Freden and E. P. Mercanti, also published by Goddard.
Resumo:
"B-229223"--p. [1]
Resumo:
"B-237832"--P. [1]
Resumo:
"B-235387."
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Within children's geographies there has been an absence concerning sexuality and in particular how this can lead to the discimination and marginalisation of individuals. Similarly, within geographies of sexualities the demographic of non-heterosexual children and youth has been under researched, with studies concerning the space of the school being very limited. This thesis sought to address these absences by carrying out qualitative interviews with non-heterosexual individuals about their school experiences. The interviews showed the importance and variation of both physical and time-spaces in the (re)production of heteronormativities, and that the agency of the indiviudal was asserted through the use of negotiation strategies that sought to navigate or resist heteronormativities.
Resumo:
The International Space Station (ISS) requires a substantial amount of potable water for use by the crew. The economic and logistic limitations of transporting the vast amount of water required onboard the ISS necessitate onboard recovery and reuse of the aqueous waste streams. Various treatment technologies are employed within the ISS water processor to render the waste water potable, including filtration, ion exchange, adsorption, and catalytic wet oxidation. The ion exchange resins and adsorption media are combined in multifiltration beds for removal of ionic and organic compounds. A mathematical model (MFBMODEL™) designed to predict the performance of a multifiltration (MF) bed was developed. MFBMODEL consists of ion exchange models for describing the behavior of the different resin types in a MF bed (e.g., mixed bed, strong acid cation, strong base anion, and weak base anion exchange resins) and an adsorption model capable of predicting the performance of the adsorbents in a MF bed. Multicomponent ion exchange ii equilibrium models that incorporate the water formation reaction, electroneutrality condition, and degree of ionization of weak acids and bases for mixed bed, strong acid cation, strong base anion, and weak base anion exchange resins were developed and verified. The equilibrium models developed use a tanks-inseries approach that allows for consideration of variable influent concentrations. The adsorption modeling approach was developed in related studies and application within the MFBMODEL framework was demonstrated in the Appendix to this study. MFBMODEL consists of a graphical user interface programmed in Visual Basic and Fortran computational routines. This dissertation shows MF bed modeling results in which the model is verified for a surrogate of the ISS waste shower and handwash stream. In addition, a multicomponent ion exchange model that incorporates mass transfer effects was developed, which is capable of describing the performance of strong acid cation (SAC) and strong base anion (SBA) exchange resins, but not including reaction effects. This dissertation presents results showing the mass transfer model's capability to predict the performance of binary and multicomponent column data for SAC and SBA exchange resins. The ion exchange equilibrium and mass transfer models developed in this study are also applicable to terrestrial water treatment systems. They could be applied for removal of cations and anions from groundwater (e.g., hardness, nitrate, perchlorate) and from industrial process waters (e.g. boiler water, ultrapure water in the semiconductor industry).