Multiple Narrow Bands in Urine Protein Electrophoresis

False-negative urine protein electrophoresis by semiautomated gel electrophoresis.

Urine is evaluated by electrophoretic methods both to gather information about the location and degree of damage within the nephron and to detect and quantify monoclonal free light chains (Bence Jones proteins). For many years, urine protein electrophoresis consisted of concentrating the urine (usually 50-fold) followed by manual application of the concentrated sample to a gel. Recently, semiau...

Single-Particle Excitations in Narrow Energy Bands

Hubbard's model for studying correlation effects in systems with narrow energy bands is analyzed by means of a technique which allows the calculation of moments of the individual peaks in the spectral weight function for single-particle excitations. The analysis of the zeroth moments of the peaks shows that the total weight in the bands depends on the strength of the kinetic-energy term in the ...

Electron Correlations in Narrow Energy Bands

Urine protein electrophoresis and immunofixation electrophoresis supplement one another in characterizing proteinuria.

Urine protein electrophoresis (UPE) is often considered to have limited usefulness in evaluating proteinuria that is not associated with gammopathies. Unusual protein bands that are detected by UPE are commonly characterized by immunofixation electrophoresis (IFE). In this paper, electrophoretic gel patterns are shown to illustrate the greater sensitivity of IFE, compared to UPE. However, UPE r...

Stagnation zones of ideal flows in long and narrow bands

We investigate stagnation zones of flows of ideal incompressible fluid in narrow and long bands. With the bandwidth being much less than its length, these flows are almost stationary over large subdomains, where their potential functions are almost constant. These subdomains are called s-zones. We estimate the size and the location of these s-zones. 1. Introduction. In this work, we investigate...