Venus express: Highlights of the nominal mission - HAL
... pericentre pass (Fig. 2). Thus in each orbit the observations cover almost all latitudes in nadir geometry. Local time at the ascending node of the orbit, which approximately corresponds to 23 hours orbital time in Fig. 2, slowly changes from orbit to orbit. Since the nominal mission lasted for two ...
... pericentre pass (Fig. 2). Thus in each orbit the observations cover almost all latitudes in nadir geometry. Local time at the ascending node of the orbit, which approximately corresponds to 23 hours orbital time in Fig. 2, slowly changes from orbit to orbit. Since the nominal mission lasted for two ...
Splitting the sky - HTM and HEALPix.
... interacting with it. It seems the convex method used in HTM is flexible and may suit well - this will of course suffer from “not invented here” syndrome for other missions/users. These type of geometric extraction features will become important for missions like Planck at some point in time. Already ...
... interacting with it. It seems the convex method used in HTM is flexible and may suit well - this will of course suffer from “not invented here” syndrome for other missions/users. These type of geometric extraction features will become important for missions like Planck at some point in time. Already ...
Low-Temperature Alkaline pH Hydrolysis of Oxygen-Free
... Titan, the largest moon of Saturn, is one of the key planetary objects in the field of exobiology. Its dense, nitrogen-rich atmosphere is the site of important organic chemistry. This paper focuses on the organic aerosols produced in Titan’s atmosphere that play an important role in atmospheric and ...
... Titan, the largest moon of Saturn, is one of the key planetary objects in the field of exobiology. Its dense, nitrogen-rich atmosphere is the site of important organic chemistry. This paper focuses on the organic aerosols produced in Titan’s atmosphere that play an important role in atmospheric and ...
Boulby_IOPSheffield_April2017
... Boulby Facility Details… Facility funded and operated by the Science and Technology Facilities Council (STFC) in partnership with CPL/ICL-UK. Supports work of 9 collaborative projects (astrophysics to climate, geology, environment, life etc), 20 institutions, > 70 scientists and students. ...
... Boulby Facility Details… Facility funded and operated by the Science and Technology Facilities Council (STFC) in partnership with CPL/ICL-UK. Supports work of 9 collaborative projects (astrophysics to climate, geology, environment, life etc), 20 institutions, > 70 scientists and students. ...
Preview Sample 1 - Test Bank, Manual Solution, Solution Manual
... Learning Outcome: 02.05.02 Compare and contrast the structures and functions of the four classes of biological molecules. Section: 02.05 Topic: Chemistry ...
... Learning Outcome: 02.05.02 Compare and contrast the structures and functions of the four classes of biological molecules. Section: 02.05 Topic: Chemistry ...
Part One Origins of Amino Acids - Wiley-VCH
... high-density clumps (also called dense cores; nH 103–105 cm3), which have higher densities than the surrounding molecular cloud; even higher densities are found in small regions, commonly known as hot molecular cores, which will be the future birth place of stars], and hot molecular clouds (Tk ...
... high-density clumps (also called dense cores; nH 103–105 cm3), which have higher densities than the surrounding molecular cloud; even higher densities are found in small regions, commonly known as hot molecular cores, which will be the future birth place of stars], and hot molecular clouds (Tk ...
Quantitative detection of Clostridium difficile in hospital
... used for disinfection of the C. difficile-positive environment. It is well known that spores are difficult to remove from the environment and that disinfecting surfaces with commonly used detergentbased cleaners is not effective in removing C. difficile spores.21 In this study, samples were collecte ...
... used for disinfection of the C. difficile-positive environment. It is well known that spores are difficult to remove from the environment and that disinfecting surfaces with commonly used detergentbased cleaners is not effective in removing C. difficile spores.21 In this study, samples were collecte ...
Taxonomical Classification of Bacteria by MALDI - TOF
... ♦ The HPA test spectrum was searched against the MMU database of Figure 4: A browser display of the tabulated search results, the test spectrum Serratia marinorubra NCTC 10845 and the matching database spectrum are presented in a browser format. ...
... ♦ The HPA test spectrum was searched against the MMU database of Figure 4: A browser display of the tabulated search results, the test spectrum Serratia marinorubra NCTC 10845 and the matching database spectrum are presented in a browser format. ...
Inactivation credit of UV radiation for viruses, bacteria and protozoan
... description of the inactivation kinetics, even though the cause of tailing is still a matter of debate. The parameters that were used to describe inactivation are the inactivation rate constant k (cm2/mJ), the maximum inactivation demonstrated and (only for bacterial spores and Acanthamoeba) the off ...
... description of the inactivation kinetics, even though the cause of tailing is still a matter of debate. The parameters that were used to describe inactivation are the inactivation rate constant k (cm2/mJ), the maximum inactivation demonstrated and (only for bacterial spores and Acanthamoeba) the off ...
Determination of Total Homocysteine
... cutoffs to increase specificity will decrease the falsepositive rate, but at the expense of diagnostic sensitivity. The determination of analyte ratios, which became possible with the introduction of acylcarnitine and amino acid profiling by tandem mass spectrometry (MS/MS), has been shown to improv ...
... cutoffs to increase specificity will decrease the falsepositive rate, but at the expense of diagnostic sensitivity. The determination of analyte ratios, which became possible with the introduction of acylcarnitine and amino acid profiling by tandem mass spectrometry (MS/MS), has been shown to improv ...
PDF of this page
... common elements and their compounds. No placement examination is required. Prrequisite: MA 110 or prerequisite with concurrency MA 112 or higher. Prerequisite with concurrency: CH 105. CH 101R - RECITATION Semester Hours: 0 CH 105 - INTRO CHEMISTRY LAB Semester Hour: 1 Complements the lecture materi ...
... common elements and their compounds. No placement examination is required. Prrequisite: MA 110 or prerequisite with concurrency MA 112 or higher. Prerequisite with concurrency: CH 105. CH 101R - RECITATION Semester Hours: 0 CH 105 - INTRO CHEMISTRY LAB Semester Hour: 1 Complements the lecture materi ...
Chapter 12. Noble Gas Isotope Geochemistry
... chapter. The former include the spectroscopically measured “solar” abundances in the Sun itself and the solar wind (as determined from spacecraft measurements), even though the latter shows small depletions in the light noble gases. This reflects some elemental fractionation in the acceleration of e ...
... chapter. The former include the spectroscopically measured “solar” abundances in the Sun itself and the solar wind (as determined from spacecraft measurements), even though the latter shows small depletions in the light noble gases. This reflects some elemental fractionation in the acceleration of e ...
Supp Mat - Columbia University
... The ternary complexes used in these experiments were prepared with EF-Tu in a sixfold excess over aa-tRNA such that at our experimental concentration, essentially all aa-tRNA was bound to EF-Tu(GTP), even for misacylated tRNAs with impaired EF-Tu affinities. Likewise, the concentration of aa-tRNA, p ...
... The ternary complexes used in these experiments were prepared with EF-Tu in a sixfold excess over aa-tRNA such that at our experimental concentration, essentially all aa-tRNA was bound to EF-Tu(GTP), even for misacylated tRNAs with impaired EF-Tu affinities. Likewise, the concentration of aa-tRNA, p ...
The influence of temperature on the synthesis of molecules on icy
... (P < 10−7 mbar) facing, through KBr windows, a FTIR spectrophotometer (Bruker Equinox 55) working in the spectral range 7500–400 cm−1 (1.33–25 μm). Pre-prepared gas mixtures were admitted from a mixing-chamber to the main chamber by a needle valve and accreted in the form of ices on a silicon substr ...
... (P < 10−7 mbar) facing, through KBr windows, a FTIR spectrophotometer (Bruker Equinox 55) working in the spectral range 7500–400 cm−1 (1.33–25 μm). Pre-prepared gas mixtures were admitted from a mixing-chamber to the main chamber by a needle valve and accreted in the form of ices on a silicon substr ...
The destruction and survival of polycyclic aromatic hydrocarbons in
... In Spitzer observations of Tauri stars and their disks, features of polycyclic aromatic hydrocarbons (PAHs) are detected in less than 10% of the objects, although the stellar photosphere is sufficiently hot to excite PAHs. To explain the deficiency, we discuss PAH destruction by photons, assuming that ...
... In Spitzer observations of Tauri stars and their disks, features of polycyclic aromatic hydrocarbons (PAHs) are detected in less than 10% of the objects, although the stellar photosphere is sufficiently hot to excite PAHs. To explain the deficiency, we discuss PAH destruction by photons, assuming that ...
Ionization in atmospheres of Brown Dwarfs and extrasolar planets IV
... solve the propagation integral from Cravens & Dalgarno (1978), and account for energy lost due to ionization and excitation. Umebayashi & Nakano (1981) solve a set of Boltzmann transport equations for the cosmic rays, with a term for energy loss due to pair-production of electrons. In this paper, we ...
... solve the propagation integral from Cravens & Dalgarno (1978), and account for energy lost due to ionization and excitation. Umebayashi & Nakano (1981) solve a set of Boltzmann transport equations for the cosmic rays, with a term for energy loss due to pair-production of electrons. In this paper, we ...
EXPOSE
EXPOSE is a multi-user facility mounted outside the International Space Station dedicated to astrobiology. EXPOSE was developed by the European Space Agency (ESA) for long-term spaceflights and was designed to allow exposure of chemical and biological samples to outer space while recording data during exposure.The results will contribute to our understanding of photobiological processes in simulated radiation climates of planets (e.g. early Earth, early and present Mars, and the role of the ozone layer in protecting the biosphere from harmful UV-B radiation), as well as studies of the probabilities and limitations for life to be distributed beyond its planet of origin. EXPOSE data support long-term in situ studies of microbes in artificial meteorites, as well as of microbial communities from special ecological niches. Some EXPOSE experiments investigated to what extent particular terrestrial organisms are able to cope with extraterrestrial environmental conditions. Others tested how organic molecules react when subjected for a prolonged period of time to unfiltered solar light.