Core Length

Table 1 Anticipated zero-time concentrations (mg kg ) as a function of soil core length...

The method of flowability determination has also been standardized in Romania with STAS 5991-68. According to the Polish standard P-61/C-8936 the re-actoplastics in accordance with this method are subdivided into 4 classes with a core length of up to 50 mm — poor press-material 50-80 mm — press-material with a low flowability, 80-120 mm — press-material with an average flowability 120-180 mm — press-material with a high plasticity. 

L Fluid flow (core) length on one side of an exchanger, span length for flow-... 

Flow (core) length for fluid 1 of a two-fluid heat exchanger, m, ft Li Flow (core) length for fluid 2 of a two-fluid heat exchanger, m, ft... 

Table 2.1 Geographical coordinates, water depth, core length, region and composition of the sediment cores considered in Figure 2.7. The cementation exponent (m) and the constant (a) are derived from the slope and intercept of a linear least square fit to the log-log display of formation factors versus porosities.

Core Coordinates Water Depth Core Length Region Sediment Composition Factor (a) Cementation Exponent (m)... 

Table 2.3 Geographical coordinates, water depth, core length, region and composition considered for the sediment classification in Section 2.5.

Core Coordinates Water Depth Core Length Region Sediment Composition... 

At least the upper 10 to 30 cm of the core length obtained with either tool is usually adulterated in that it is not appropriate for pore water analysis. The multicorer, high-momentum gravity corer, or at least the box corer should be employed in a parallel procedure to ensure that this layer will also be included as part of the sample. It should not be overlooked that, especially in the deep sea, sampling with two different tools at the same site might imply a distance of several 100 m on the ocean floor. From this deviation considerable differences in pore water composition, and in some of the biogeochemical reactions close to sediment surface, are likely to result. Hence the specification as to same site must be acknowledged with caution. 

In principle, the box-shaped gravity corer is not dissimilar to the above mentioned gravity corer. Here, a metal box with a core length of about 10 m and a lateral dimension of about 0.1 m up to 0.3 m is used instead of a steel tube with a plastic liner. 

For most equipment ratings used in the oil industry the temperatme rise limits are 80°C for Class B and 100°C for Class F (Class H allows 125°C). It is common practice to specify Class F insulating materials but to restrict the actual temperature rise to that of Class B. These stem from the recommendation in IEC60085 that for ratings equal and above 5000 kVA or if the iron core length is equal and above one metre, that this combination of classes should be used. 

The expression for Q is readily generalized to 3-D as follows. The hard-core length / is related to the hard-core volume v by / =(gv ) , where g=geometrical factor. A similar relationship also holds for the available space /=(gv). It follows that (/—/ )— This leads in 3-D... 

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