Core profiles

Figure 3. Measured (dotted) and calculated CPs of Si by the FLAPW-LDA (dashed) and the FLAPW-SIC (solid) schemes, The theoretical core profile is represented by a dash-dotted curve (after Kubo et al. [10]). 

McKee PM, Snodgrass WJ, Hart DR, et al. 1987. Sedimentation rates and sediment core profiles of uranium-238 and thorium-232 decay chain radionuclides in a lake affected by uranium mining and milling. Can J Fish Aquat Sci 44 390-398. 

Figure 7.4 Down-core profiles of 234Th and 210Pb for Fourleague Bay (USA) Shortterm deposition rates and accumulation rates are calculated using these profiles. The inflection of 210Pb at the base of the surface mixed layer (dashed line) reflects the logarithmic decrease in excess activities associated with decay, from which an accumulation rate can be calculated. (Modified from Day et al., 1995.)...

Figure 7.13 Theoretical down-core profiles of radon activity illustrating that 222Rn is typically not in (a) secular equilibrium with its parent 226Ra at the sediment-water and water-atmosphere interfaces because of inert characteristics and loss by (b) diffusion and (c) gas bubble ebullitive stripping from sediments to overlying waters and then to the atmosphere. (Modified from Martens and Chanton, 1989.)...

Figure 13.18 Down-core profiles of porewater dissolved organic carbon (DOC), C N ratios, and total ECO2 at three stations in Chesapeake Bay. (Modified from Burdige and Zheng, 1998.)...

On d 7, carefully remove 100 pL of the supernatant of the wells and store it at -80°C until the HIV-1 p24 Core Profile ELISA is performed. A dilution of 1/10 of the sample is used for p24 antigen quantification. 

Various polarographic techniques have been successfully used to measure elemental sulfur, S , and sulfide (H2S and HS ) concentrations in laboratory solutions [116], salt water [117], saline lake [118], freshwater [119], lake porewaters [120], salt marsh sediments [109,120], and marine porewaters [121], Using stripping square wave voltammetry, researchers have been able to measure sulfide species at nanomolar concentrations [118-120, 122,123], Recently, cyclic and linear sweep voltammetries have been used to quantify elemental sulfur S , hydrogenosulfide (HS ) and polysulfides (S ) with fast scan rates (IV s ) [124] for example, in estuarine sediments (from Rehoboth Bay, an inland bay located in Delaware), the sulfur speciation was found to change throughout a core profile, with dominant in the top layers (0-6 cm), dominant... 

Fig. 14. Pore-water profiles of SO, NH4, HPO4, and alkalinity at FOAM, NWC, and DEEP (gravity cores). Profiles from a given station are arranged horizontally.

The depth profile of the TOC content (Fig. 3) in the piston core shows the highest TOC content (1.07%) at the surface and an abrupt decrease to 0.6% at 7 cm. Between 7 and 50 cm, the TOC content fluctuates between 0.47 and 0.75%. Below 50 cm, TOC content shows little change. The down-core profile of sulfate in porewater (Fig. 3) shows a typical depletion trend with depth. The sulfate depletion rate is very rapid in the upper 40 cm, with a mean gradient of — 0.18mMcm whereas the depletion rate becomes much lower (—0.02 mM cm ) below 50 cm. TS contents measured in this piston core (Fig. 3) range from 0.02 to 0.10% with no apparent down-core trend. These values are also significantly lower than the mean value (0.22%) of modem fine-grained sediments (Berner, 1982). 

For small molecules, most prospective (aka predictive ) models are used to identify potential chemical structure-mediated, off-target effects so that chemists can design away from unwanted features and chose the candidate with the overall best profile. The application of prospective models largely encompasses the evaluation of (i) selectivity/promis-cuity, (ii) secondary and safety pharmacology, (iii) intrinsic cytotoxicity, (iv) ADME-based drivers of toxicity, and (v) genotoxidty. This core profiling battery is based on drivers... 

The production of hollowed cored profiles is carried out using a core which is mounted buoyant in the tool (see Fig. 8.29). The core usually is equipped with a separate heating and cooling system in order to enable full impregnation of the interior reinforcement fibers. In some cases, for example when polypropylene is used as matrix material, it is not necessary to use a release film around the core. In this case, the temperature distribution of... 

The BGR-300 is a small tank-type reactor with the secondary vessel acting as a safety system. The BGR-300 has a three-region core profiled by the fissile material content and effective density. A molten salt reflector plays the role of an in-vessel radiation shield. The reactor core uses a porous matrix fuel in the form of quasi-homogeneous heat generating blocks with cross-circulated coolant. 

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