Virgin loading

Pre-liquefaction coefficient of consolidation (c ) values for each specimen were calculated based on measured hydraulic conductivity (k) and volume compressibility (m ) data for virgin loading shown in Figure 4a. Post-liquefaction c, values were back-calculated using time histories of pore pressure dissipation and volume change measurements obtained during post-liquefaction dissipation tests for each incremental change in effective stresses. Back-calculations of c were... 

Stiffness also depends on the stress history or over-consolidation ratio (OCR). The stiffness of soil at virgin loading is lower than the stiffness at unloading/reloading conditions. 

The usual feed is a virgin gas oil that is, the part of crude oil boiling between about 60 °F. and 1050°F. Sometimes material below 600°F will be included into the cat feed but more often, it is put into diesel fuel or home heating oil. The heavy material above 1050°F is not normally used as cat feed because it often contains metallic compounds that contaminate the catalyst. Even if metals are not present, there are sometimes tarry materials that end up on the catalyst. This deposit increases the load on the regenerator, and, hence, the 1050 °F+ material is less desirable than lower boiling feeds. 

Figure 19a, b compares the storage modulus as well as tan 8 for various nanocomposites prepared from EVA rubber having 50% vinyl acetate content and loaded with MWCNT, as a function of temperature [162]. Throughout the experimental temperature range of —35 to 20°C, the storage moduli show steady increase from the virgin rubber with the increase in MWCNT level (see Fig. 19a). For example, there is...

Virgin polyolefins contain, as a rnle, some loaded antioxidants, often around 0.1% w/... 

---