Given\(0 \leqslant \lambda _0< \lambda _1< \cdots< \lambda _n \to \infty \) and a sequence of Dirichlet polynomials\(\tau _n (z) = \sum\limits_{v = 0}^n {a_{nv} e^{ - \lambda _v z} (a_{nv} \in C)} \) estimates for the coefficientsanν are proved if {τn} is uniformly bounded on a region containing a half plane. Thereby a result is obtained which is an analogue of a known result for polynomials, that is for theA-transforms of the geometric sequence; moreover a Jentzsch type theorem for {τn(z)} is derived.

For the derivativesp(k)(x; α, γ) of the stable density of index α asymptotic formulae (of Plancherel Rotach type) are computed ask→∞ thereby exhibiting the detailed analytic structure for large orders of derivatives. Generalizing known results for the special case of the one-sided stable laws (O<α<1, γ=-α) the whole range for the index of stability and the asymmetry parameter γ is covered.

Recent reports on late dehiscence of circular stapled anastomoses raise doubt on the reliability of this technique. In an experimental study on 14 mongrel dogs, hand-sewn and stapled anastomoses were compared. Mechanical strength was measured by bursting pressure test 1 week and 6 months following surgery. The results demonstrated the superior mechanical strength of the stapling technique after both periods but a better mucosal restitution in the hand-sewn anastomoses. The findings suggest a different healing pattern. In some cases, pelvic sepsis or disturbed realignment of collagen fibers could be blamed for this late complication.

One hundred and ten children, ages 6 days to 14 years, were investigated for vesicoureteral reflux (VUR) using ultrasound before voiding cystourethrography (VCU). Sonographically a VUR was assumed if a retrovesical dilated ureter and/or an increase of the separation of the central renal echo complex (CRC) could be detected. By means of sonography VUR grades III and IV were seen in 100%, grade II in 84% of all cases. There was a false positive rate of 10%. Sonographic reflux study is a sensitive and specific screening and follow-up procedure for VUR.