Lemma 1. let o be a nondecreasing function on [0, 0], continuous on (0, 0) with o(0) = 0, 0(00) = 0(0 - ), and 0(22) 0. if f and g are nonnegative, measurable functions on (22, f, p) and s, e, b are positive constants with b > 1 satisfying d ) ect 10% ba, f 581} s £p{9 > 1} for all i e (0,00), d (5) there exists a = ac,8,8,8 € (0,00) such that -blodhu e 0(g) s aeo(s). (6)