Morad Masjedi

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Large-head metal-on-metal total hip replacement has a failure rate of almost 8% at five years, three times the revision rate of conventional hip replacement. Unexplained pain remains a feature of this type of arthroplasty. All designs of the femoral component of large-head metal-on-metal total hip replacements share a unique characteristic: a subtended(More)
We present the small-scale (0.01 < r < 8 h Mpc) projected correlation function wp(rp) and real space correlation function ξ(r) of 24520 luminous early-type galaxies from the Sloan Digital Sky Survey Luminous Red Galaxy (LRG) sample ( 0.16 < z < 0.36). “Fiber collision” incompleteness of the SDSS spectroscopic sample at scales smaller than 55 arcsec prevents(More)
SDSSJ1049+5103, commonly known as Willman 1, is an extremely low-luminosity Milky Way companion whose properties are intermediate between those of globular clusters and dwarf spheroidals. In this paper, we present new, wide-field photometry extending 3 mag below the main sequence turnoff. These data show that this object is old, moderately metal-poor, has a(More)
microRNAs (miRNAs) are a recently discovered class of small non-coding RNAs. Their mature form is 20-25 nucleotides (nt) long, and is derived from a longer hairpin precursor. Almost 700 miRNAs are currently known in human. miRNAs regulate their target genes by blocking their translation into protein, or by compromising the stability of a messenger RNA(More)
We present measurements of the excess mass-to-light ratio measured around MaxBCG galaxy clusters observed in the SDSS. This red sequence cluster sample includes objects from small groups with M200 ∼ 5 × 10hM⊙ to clusters with M200 ∼ 10hM⊙. Using cross-correlation weak lensing, we measure the excess mass density profile above the universal mean ∆ρ(r) = ρ(r)(More)
We model the small-scale clustering of luminous red galaxies (LRGs; Masjedi et al. 2006) in the Sloan Digital Sky Survey (SDSS). Specifically, we use the halo occupation distribution (HOD) formalism to model the projected two-point correlation function of LRGs on scales well within the sizes of their host halos (0.016hMpc ≤ r ≤ 0.42hMpc). We start by(More)
Star-formation history is strongly related to environment; the most massive and least star-forming galaxies reside in the highest density environments. There are now good observational reasons to believe that the progenitors of these red galaxies have undergone starbursts, followed by a post-starburst phase. Poststarburst (“K+A” or “E+A”) galaxies appear in(More)
Star-formation history is strongly related to environment; the most massive and least star-forming galaxies reside in the highest density environments. There are now good observational reasons to believe that the progenitors of these red galaxies have undergone starbursts, followed by a post-starburst phase. Poststarburst (“K+A” or “E+A”) galaxies appear in(More)
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