We report the XMM–Newton detection of a moderately bright X–ray source (F0.5−7 ∼ 8.2 × 10 −14 erg cm s) superimposed on the outer arms of the inactive spiral galaxy MCG– 03-34-63 (z=0.0213). It is clearly offset from the nucleus (by about 19”) but well within the D25 ellipse of the galaxy, just along its bar axis. The field has also been observed with the Hubble Space Telescope (HST) enabling u...

BACKGROUND Although colorectal cancer death rates in the United States have declined by half since 1970, large geographic disparities persist. Spatial identification of high-risk areas can facilitate targeted screening interventions to close this gap. METHODS We used the Getis-Ord Gi* statistic within ArcGIS to identify contemporary colorectal cancer "hotspots" (spatial clusters of counties w...

Consider the smooth projective models C of curves y = f(x) with f(x) ∈ Z[x] monic and separable of degree 2g + 1. We prove that for g ≥ 3, a positive fraction of these have only one rational point, the point at infinity. We prove a lower bound on this fraction that tends to 1 as g → ∞. Finally, we show that C(Q) can be algorithmically computed for such a fraction of the curves. The method can b...

The English article system presents many problems for non-native speakers of English, particularly when they do not have an equivalent structure in their first language. Different approaches to the teaching of articles have attempted to overcome this problem. By encouraging students to address the notion of countability and to identify specific uses of articles in English, the ESL teacher in th...

PURPOSE Monomeric IgE molecules, when bound to the high-affinity receptor, exhibit a vast heterogeneity in their ability to induce survival promotion and cytokine production in mast cells. At one end of this spectrum, highly cytokinergic (HC) IgEs can induce potent survival promotion, degranulation, cytokine production, migration, etc., whereas at the other end, poorly cytokinergic (PC) IgEs ca...

Let T be a tree. A vertex of T with degree one is called a leaf, and the set of leaves of T is denoted by Leaf(T ). The subtree T − Leaf(T ) of T is called the stem of T and denoted by Stem(T ). A spanning tree with specified stem was first considered in [3]. A tree whose maximum degree at most k is called a k-tree. Similarly, a stem whose maximum degree at most k in it is called a k-stem, and ...