RESUMEN
A new apparatus has been built that annexes a normal electrocardiograph, ECG, with the aim to enhance its capacity. It adds the normal ECG power to superpose multiple records of ECG altogether and averages out them and, further, makes sophisticated analysis, such as normalizing the peak heights, evaluating the half-line widths of the peaks, or that of the standard deviations of measurements like the inter peak distances. The results of the said calculations have not been obtainable using the former instruments, and are expected to be useful for clinicians.
Asunto(s)
Electrocardiografía/instrumentación , Corazón/fisiología , Humanos , Factores de TiempoRESUMEN
This paper reports on an inorganic reaction that performs complete discrimination of D- and L-enantiomers from each other in an aqueous solution at room temperature. This is the first finding of an inorganic reaction that acts like an organic biosystem in the sense that such a kind of complete discrimination of enantiomers is a matter solely done through biosystems in nature. We also assume that they suggest significant concerns with not only analytical chemistry in regards to the discrimination of isomers, but also with cosmo/geo-chemistry.
Asunto(s)
Aminoácidos/química , Indicadores y Reactivos , Cetonas/química , Espectroscopía de Resonancia Magnética , Oxígeno/química , EstereoisomerismoRESUMEN
The use of the concept of near equivalence of substructures in a computer program concerned with organic synthesis requires a concrete definition of «nearness¼ and an efficient method for implementing the concept. Such a method has been devised and its use is described and examples are given.