The global radius of curvature of a space curve is introduced. This function is related to, but distinct from, the standard local radius of curvature and is connected to various physically appealing properties of a curve. In particular, the global radius of curvature function provides a concise characterization of the thickness of a curve, and of certain ideal shapes of knots as have been inves...

Determination of serum ornithine carbamoyltransferase (EC 2.1.3.3) activity can be a valuable diagnostic tool in the detection of liver diseases involving cytolytic processes. I describe a micromethod for measuring this activity in serum, in which the reaction product, citrulline, is measured colorimetrically in the incubation mixture without prior deproteinization. To eliminate the interferenc...

The use of H-point curve isolation (HPCIM) and H-point standard addition methods (HPSAM) for spectrophotometric studies of complex formation equilibria are proposed. One step complex formation, two successive stepwise and mononuclear complex formation systems, and competitive complexation systems are studied successfully by the proposed methods. HPCIM is used for extracting the spectrum of comp...

OBJECTIVE To determine the distribution of Thai neonatal birthweights classified in gestational age and sex to create standard intrauterine growth curves of Thai neonates. MATERIAL AND METHOD A retrospective study was performed in Thai singleton pregnant women with confirmed gestational age between 24 and 42 weeks (168-294 days), delivered at Rajavithi Hospital. Birthweights were graphed as 5...

The reverse transcription-polymerase chain reaction (RT-PCR) is the most sensitive method used to evaluate gene expression. Although many advances have been made since quantitative RT-PCR was first described, few reports deal with the mathematical bases of this technique. The aim of the present study was to develop and standardize a competitive PCR method using standard-curves to quantify trans...

Bakcground: Laparoscopic cholecystectomy (LC) is generally accepted as a standard treatment of cholelythiasis. However there are trends to further minimize surgical trauma and to improve cosmetic results by performing LC through a single transumbilical incision. The aim of this study was to evaluate the learning curve and early results of transumbilical laparoscopic cholecystectomy (TC) perform...

We outline a method for computing the tangent cone of a space curve at any of its points. We rely on the theory of regular chains and Puiseux series expansions. Our approach is novel in that it explicitly constructs the tangent cone at arbitrary and possibly irrational points without using a standard basis.

Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This document describes new key exchange algorithms based on Elliptic Curve Cryptography (ECC) for the Transport Layer Security (TLS) protocol. In particular, it specifies the use of Elliptic Curve Diffie-Hellman (E...