4-Pyridoxic acid is the major metabolite of all forms of
vitamin B₆ in mammalian species. The determination of 4-pyridoxic
acid, therefore, is important in the investigation of vitamin B₆
metabolism and for the establishment of human requirements for the
vitamin.
Although 4-pyridoxic acid is itself fluorescent, Huff and
Perlzweig (1944)...
This study modified certain existing techniques used in the
determination of the radiation exposure to various anatomical structures
of the gastro-intestinal tract during fluoroscopic examinations.
Monitoring films were attached directly to the patient during the
routine upper gastro-intestinal examination, instead of placing the
films on the panel of the fluoroscope....
Analysis, coupled with an experimental investigation, is an important step in the design process of
electronic circuits. Fortunately, with the development
of computer programs to perform general network analysis,
the job of analyzing relatively complex networks is not
as formidable as it once was. This investigation develops guidelines for efficiently...
A set of circuit analysis programs designed for the IBM 1620
computer (having 40,000 digits of memory) is described and its operation
is explained. The set consists of d-c, a-c, and transient analysis
programs.
The d-c and a-c analysis programs provide the branch current
and node-to-reference potential for linear circuits....
Active transmission lines, a generalization of classical transmission
lines, are useful electrical devices. They can be utilized to
realize distributed amplifiers and to obtain other electrical characteristics unattainable with passive lines. Active lines have historical
significance and model many physical processes including heat
conduction in an internally heated material, a...