To the Editor: It was disturbing to read the article entitled “Studies of the Stability of 18 Chemical Constituents,” in the December, 1972, issue of Clinical Chemistry (1). The authors define their conditions of collection and storage but do not, however, make it clear what their object is. If the objective was to show stability of serum before analysis, then their data are misleading. For exa...

Sørensen used a slide-wire potentiometer to make his pH measurements. Here a known potential is applied to counterbalance the potential of the hydrogen cell (i.e. the hydrogen electrode plus the counter electrode) and to reduce its current output to zero, at which point the value of the applied counter-potential is equal to that of the cell potential. Since the point of balance is indicated by...

Neurodevelopmental disorders such as spina bifida meningomyelocele (SBM) are often associated with dysrhythmic movement. We studied rhythm discrimination in 21 children with SBM and in 21 age-matched controls, with the research question being whether both groups showed a strong-meter advantage whereby rhythm discrimination is better for rhythms with a strong-meter, in which onsets of longer int...

PURPOSE The goals of this investigation were to evaluate the accuracy and reliability of the Angioflow meter system with use of in vitro and in vivo methods and to compare it to the standard Transonics HD01 system in a clinical setting. MATERIALS AND METHODS The Angioflow meter system consists of a 6-F endovascular catheter and a laptop computer containing proprietary software for this applic...

This paper describes a process of numerical testing and optimization the ultrasonic gas meter channel. A conventional flowmeter requires large installation space due to quality stability velocity profile. Previously, shape inner channel was optimized reach suitable flow field for measurement. The goal this work is find an optimal design reduced size achieve stable profile with minimum disturban...

Musicians often say that they not only hear but also "feel" music. To explore the contribution of tactile information to "feeling" music, we investigated the degree that auditory and tactile inputs are integrated in humans performing a musical meter-recognition task. Subjects discriminated between two types of sequences, "duple" (march-like rhythms) and "triple" (waltz-like rhythms), presented ...