منابع مشابه
Adrenaline syringes are vastly over prescribed.
Allergy is being seen more and more commonly. A recent review of accident and emergency admissions in England reported 415 anaphylactic cases (adults and children) from 100 000 referrals in 1991/92, but 876 in 1994/95. Death following anaphylaxis is most feared but fortunately remains a very rare event, currently estimated at less than one case per year per million of the UK population. There i...
متن کاملIrreducible Polynomials over GF(2) with Three Prescribed Coefficients
For an odd positive integer n, we determine formulas for the number of irreducible polynomials of degree n over GF (2) in which the coefficients of xn−1, xn−2 and xn−3 are specified in advance. Formulas for the number of elements in GF (2n) with the first three traces specified are also given. Let q be a prime power and let GF (q) be a finite field with q elements. A classical result (see [6, 3...
متن کاملContinuation of prescribed compared with over-the-counter oral contraceptives.
OBJECTIVE To estimate differences in continuation of oral contraceptive pills (OCPs) between U.S. resident women obtaining pills in U.S. family planning clinics compared with over-the-counter in Mexican pharmacies. METHODS In El Paso, Texas, we recruited 514 OCP users who obtained pills over the counter from a Mexican pharmacy and 532 who obtained OCPs by prescription from a family planning c...
متن کاملAvoiding Zero-sum Subsequences of Prescribed Length over the Integers
Let t and k be a positive integers, and let Ik = {i ∈ Z : −k ≤ i ≤ k}. Let st(Ik) be the smallest positive integer ` such that every zero-sum sequence S over Ik of length |S| ≥ ` contains a zero-sum subsequence of length t. If no such ` exists, then let st(Ik) =∞. In this paper, we prove that st(Ik) is finite if and only if every integer in [1, D(Ik)] divides t, where D(Ik) = max{2, 2k − 1} is ...
متن کاملConstructing Elliptic Curves with Prescribed Torsion over Finite Fields
The modular curve X1(N) parametrizes elliptic curves with a point of order N . For N ≤ 50 we obtain plane models for X1(N) that have been optimized for fast computation, and provide explicit birational maps to transform a point on our model of X1(N) to an elliptic curve. Over a finite field Fq, these allow us to quickly construct elliptic curves containing a point of order N , and can accelerat...
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ژورنال
عنوان ژورنال: British Dental Journal
سال: 2009
ISSN: 0007-0610,1476-5373
DOI: 10.1038/sj.bdj.2009.60