A FAMILY of inequalities concerning inner products of vectors and functions began with Cauchy. The extensions and generalizations later led to the inequalities of Schwarz, Minkowski and Holder. The well known Holder inequality involves the inner product of vectors measured by Minkowski norms. In this paper, another step of extension is taken so that a Holder type inequality may apply to general...

To the Editor, Recently, opportunities for ultrasound-guided peripheral nerve block have been increasing. It is difficult for beginners, and sometimes even for skilled persons, to visualize the needle during the procedure due to the narrow width of the ultrasonic beam. There have been several reports of attempting easy visualization of the needle, for example, with the use of a needle guide [1–...

THE finest movements of surgery are made with the fingers and thumb, not with the wrist and hand as a whole. In the usual method of suturing, the needle is grasped by the needle-holder which is held more or less in the palm of the hand. The fine, sharp needles of ophthalmic surgery, such as those made by Grieshaber, inevitably become dulled as they are grasped by the metal blades of the needle-...

Introduction: Bite wing radiographs are indicated in children with closed posterior contacts. Given the fact that nowadays bitewing radiographs are taken using both paper loop and film holder, the aim of this study is the evaluation of acceptance and diagnostic quality of two methods. Materials and Methods: This study is a sort of diagnostic accuracy test that was performed on 20 6-8 year old ...