CORRECTION.Leakage Prevention by Shielding, Especially in Potentiometer Systems

A Simplified Recording Potentiometer.

(WITH SIX FIGURES) Some years ago (1) the author described a recording potentiometer designed primarily to meet the requirements of flexibility so necessary in physiological work. A number of these instruments were built and are still in use. Ever since this earlier instrument was developed the writer has continued to improve and simplify until now one which is far superior in all respects to t...

A single-molecule potentiometer.

Controlling electron transport through a single-molecule device is key to the realization of nanoscale electronic components. A design requirement for single molecule electrical devices is that the molecule must be both structurally and electrically connected to the metallic electrodes. Typically, the mechanical and electrical contacts are achieved by the same chemical moiety. In this study, we...

R and geographical information systems , especially

The paper starts by sketching the key modes of spatial data analysis (point pattern, continuous surface, areal/lattice), and how they fit into legacy GIS data models. Based on development work with the GRASS release 5 team (GRASS 5 is GPL), status is reported for using R in the analysis of sites (point) data and for raster data, as well as using R as an intermediate analytical environment for i...

A Recording Potentiometer for Use in Physiological Investigations.

Calculation of Nuclear Magnetic Shielding Constants in Two Simple Systems