儿童急性白血病诊治初探

目的：探讨儿童急性白血病转归与治疗的关系。方法；对接受治疗的患儿进行疗效观察，比较。结果：接受正规化疗者骨髓持续完全缓解率[CCR]高，不正规化疗者出现并发症，预后差。结论：正规长期化疗与长期生存呈正相关关系。     

Coprime ordering of cyclic planar difference sets

Motivated by a question about uniform dessins d’enfants, it is conjectured that every cyclic planar difference set of prime power order m≠4 can be cyclically ordered such that the difference of every pair of neighbouring elements is coprime to the module v?m²+m+1. We prove that this is the case whenever the number ω(v) of different prime divisors of v is less than or equal to 3. To achieve this we consider a graph related to the difference set and show that it is Hamiltonian.     

Characters of Representations for Lie Superalgebras of Type C Using Tableaux

Let  = osp(2, 2n) denote the complex Lie superalgebra of type C of rank n + 1. Let V(λ) denote the irreducible representation of  with the highest weight λ. For each finite dimensional V(λ), we describe the character of V(λ) combinatorially using the generalized osp(2, 2n)-standard tableaux of λ.     

Complete regular dessins of odd prime power order

A dessin is a 2-cell embedding of a connected 2-coloured bipartite graph into an orientable closed surface. A dessin is regular if its group of colour- and orientation-preserving automorphisms acts regularly on the edges. In this paper we employ group-theoretic method to determine and enumerate the isomorphism classes of regular dessins with complete bipartite underlying graphs of odd prime power order.