Data from the Ocean Drilling Program and from other marine studies are used to relate organic carbon flux preserved in the seabed with the uptake of sulfate and production of ammonia in the pore water of the sediment column. Relationships are derived that can be used to estimate recent sedimentation rates to within one order of magnitude, spanning the range from 0.1 to 100,000 m/m.y. The relati...

A test that is meant to measure a given parameter is more likely to detect changes in that parameter if it is not affected by factors other than those which it is intended to quantitate. The clinical use of the laboratory test for determining the erythrocyte sedimentation rate is backed by nearly a century of experience. Although its nonspecificity is acknowledged, it has been used to quantitat...

Red blood cells form face-to-face linear or branched structures, called as rouleaux, under static conditions or low shear rates in the presence of appropriate macromolecules (Baskurt et al. 2011a; Chien 1975; Merrill 1969; Neu and Meiselman 2007). This process is reversible, and cells can be dispersed individually when a disaggregating shear rate is applied to the cells (Baskurt et al. 2011b; L...

To the Editor I refer to some interesting data concerning the clinical significance of the results obtained with the TEST 1 instrument reported in the article by Cha et al,1 in which erythrocyte sedimentation rate (ESR) data obtained using the TEST 1 were compared with those obtained with the manual reference method according to the International Council for Standardization in Haematology.2 The...

BACKGROUND The erythrocyte sedimentation rate (ESR) is a simple and inexpensive laboratory test. It is commonly used to assess the acute phase response. METHODS A review of the recent literature was done to evaluate the role of the ESR and its importance in different clinical conditions both inflammatory and noninflammatory. RESULTS Despite the critical role cytokines have in inflammatory c...

The erythrocyte sedimentation rate (ESR) has become a ubiquitously used technique in medicine as a marker of systemic illness. The test involves placing anticoagulated whole blood into an upright test tube and monitoring the rate at which red blood cells (RBC) fall over time. Negative charges keep RBC from sticking together. If this charge is neutralised, RBC stack into chains, or rouleaux, and...

In recent times sedimentation data have become increasingly relevant in modeling sedimentation operations such as filtration, fluidization, two-phase flow operations and in environmental engineering. In this study, the effects of reactants concentrations and size of settling vesselson the sedimentation rates of strontium and barium carbonates, in aqueous medium, were studied by a modified appro...

In 1940 T'ang and Wang (1) measured the erythrocyte sedimentation rate and the plasma viscosity in 176 cases of pulmonary tuberculosis and 56 cases of tuberculosis of other organs. These writers concluded from their data that the plasma viscosity determination may be a more sensitive test for activity of tuberculosis than the sedimentation rate. Independently, in 1942, Whittington (2) in a stud...