نتایج جستجو برای: the moons halo
تعداد نتایج: 16054713 فیلتر نتایج به سال:
The focus of the G experiment at Jefferson Lab is the contribution of the strange quark to the character of the proton. The effects of different flavors of quarks can be disentangled by comparing the electromagnetic and weak contributions, since the electromagnetic and weak couplings of the various flavors differ. The weak interaction can be isolated for study because it violates parity symmetr...
Appearance: The reversed halo sign (also known as the atoll sign, reverse halo sign, and the fairy ring sign) is defined by central ground-glass opacity with a surrounding halo or crescent of consolidation (Fig. 1). This should not be confused with the halo sign which refers to central consolidation with a surrounding halo or rim of ground-glass opacity. Furthermore, the reversed halo sign shou...
Our work shows that XRD and XRF studies on missions to Mars and Saturn's moons could be carried out using the radioisotopes Rh-101 or Am-241 as sources of radiation. We discuss geological questions which we believe should be answered before any search for biological structures or pre-forms of life. We also suggest a method to produce Rh-101.
Two different parameters for the quantitative description of beam halo are introduced, both based on moments of the particle distribution. One parameter is a measure of spatial halo formation and has been defined previously by Wangler and Crandall [3], termed the profile parameter. The second parameter relies on kinematic invariants to quantify halo formation in phase space; we call it the halo...
We have compiled a sample of 699 stars from the recent literature with detailed chemical abundance information (spanning −4.2 . [Fe/H] . +0.3), and we compute their space velocities and Galactic orbital parameters. We identify members of the inner and outer stellar halo populations in our sample based only on their kinematic properties and then compare the abundance ratios of these populations ...
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