OBJECTIVE To evaluate choroidal osteoma for tumor growth, tumor decalcification, related choroidal neovascularization, visual acuity loss, and poor visual acuity. DESIGN Retrospective nonrandomized single-center case series. SETTING Ocular Oncology Service at Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pa. PARTICIPANTS There were 74 eyes of 61 patients with choroidal os...

DENTAL CARIES AND A CONSIDERATION OF THE ROLE OF DIET IN PREVENTION T HE FOUNDATION for dental health is established early in life. The greatest single cause of dental disease is caries which, in turn, is largely a disease of the first two decades of life. The deciduous teeth are no less susceptible than the permanent ones, and disease in them is not without serious consequence for the permanen...

Decalcification of cement paste in concrete is associated with several modes of chemical degradation including leaching, carbonation and sulfate attack. The primary aim of the current study was to investigate the effects of decalcification under saturated conditions on the dimensional stability of cement paste. Thin (0.8 mm) specimens of tricalcium silicate (C3S) paste, white portland cement (W...

In all, 182 and 220 replies were received from patients in group A and B, respectively. Early complications included haematoma in five (2%) and two (0.9%) patients, respectively, and wound infection in 24 (13%) and 17 (7.7%). Eight patients who had scrotal pain even before vasectomy were excluded from the analysis (two in group A and six in group B). In group A, 25 of 180 (13.8%) had a new onse...

We investigate the structure of the Minkowski sum of standard simplices in R. In particular, we investigate the one-dimensional structure, the vertices, their degrees and the edges in the Minkowski sum polytope. 2000 MSC: 52B05, 52B11, 05C07.

Let A be a finite nonempty set of integers. An asymptotic estimate of several dilates sum size was obtained by Bukh. The unique known exact bound concerns the sum |A + k ·A|, where k is a prime and |A| is large. In its full generality, this bound is due to Cilleruelo, Serra and the first author. Let k be an odd prime and assume that |A| > 8kk. A corollary to our main result states that |2 · A +...