EXCH


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Related to EXCH: foreign exchange, exchanges

EXCH

(jargon)
/eks'ch*/ or /eksch/ To exchange two things, each for the other; to swap places. If you point to two people sitting down and say "Exch!", you are asking them to trade places. EXCH, meaning EXCHange, was originally the name of a PDP-10 instruction that exchanged the contents of a register and a memory location.

Many newer hackers are probably thinking instead of the PostScript exchange operator (which is usually written in lowercase).
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
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The %K saturation was calculated as the exch. K as a proportion of the eCEC.
The soils were found to separate into three separate groups, with the Griffith 1 soil having the highest values for soln K, exch. K and TBK.
Highly significant differences (P = 0.001) were found between the soils and fertiliser K rates for the final soil K variable values, while the interaction of the soil and fertiliser rate treatments was also significant (soln K, P=0.046; exch. K, P=0.013; TBK, P = 0.015).
uptake (Table 6) and final exch. K (Table 4) was investigated, and a significant negative linear regression (at the treatment mean level) was calculated (Fig.
Exploration of the relationship between the UTE and final exch. 1C was undertaken, and a highly significant negative relationship was calculated (Fig.
The lowest initial exch. K value measured was 264 mg [kg.sup.-1] (~0.68 [cmol.sub.c][kg.sup.-1]) for the Orange soil.
Soil potassium relationships, uptake efficiency and availability for six distinctive soils in central and southern New South Wales, Australia
The smallest concentrations of Co were found in the EXCH fraction, whilst the largest concentrations of Co in most soils were associated with the RES, FeAM and FeCR fractions.
Mean proportions of Mn decreased in the order: RES [approximately equals] FeAM [is greater than] MnOX [is greater than] FeCR [is greater than] ORG [approximately equals] EXCH. However, as with Co, there was considerable variation in the proportional distribut ion of Mn between the different soils (Fig.
For both Co and Mn, the smallest proportions of these elements were found in the EXCH fraction (Figs 3 and 4), ranging from 0.0% to 1.4% with a mean of 0.4% for Co, and from 0.4% to 5.4% with a mean of 2.0% for Mn, respectively.
Unlike Co, the Mn concentration in the EXCH fraction was not significantly related to pH but was significantly correlated with Mn-FeAM and negatively correlated with the amount of clay in the soil (Table 6).
However, as for the EXCH and ORG fractions, a significant correlation was observed between %Co-MnOX and %Mn-MnOX (r = 0.58*).
Conversely, Co and Mn in the EXCH, ORG, and MnOX fractions are much more likely to have a considerable influence on Co and Mn availability.
Fractionation of cobalt and manganese in New Zealand soils

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