Level Fluctuation

Rough correlations have been made of minimum fluidization velocity, minimum bubbling velocity, bed expansion, bed level fluctuation, and disengaging height. Experts recommend, however, that any real design be based on pilot plant work. 

High and low stands of sea level are directly recorded as sedimentary coastal onlap sequences and as erosional terraces. These records are complicated in regions of crustal instability, and the rate and nature of crustal deformation determines whether evidence of short-term or long-term sea-level fluctuations are preserved and how easily this evidence is interpreted. Because continental basement warps and fractures through time, and because evidence of sea level is erased by erosion, the interpretation of this evidence to produce sea-level curves for the Phanerozoic has been a subject of considerable debate. 

In regions where land is steadily rising relative to mean sea level, the effects of sea-level fluctuations are sometimes recorded as ero-sional features on land. Whenever the rate of sea-level rise matches the rate of uplift, there is an apparent sea level still stand. Both deposition and erosion are controlled by this almost fixed base level, and a terrace may form. If sea level falls and again rises, the terrace will have risen sufficiently so that it is preserved upslope. Epi-... 

This is in part because denudation rates are very low and because sea-level fluctuation may be important to the erosion process. Cratons seem to undergo major episodes of erosion following drops of sea level. When the level drops to a stable stand of several million years, much of the landscape is eroded down to the new level and an erosion surface or a planation surface forms. 

Sorensen JA, KaUemeyn LW, Sydor M. 2005. Relationship between mercury accumulation in young-of-the-year yellow perch and water-level fluctuations. Environ Sci Technol 39 9237-9243. 

The range of fluid level fluctuation during the recovery operation ... 

As the localized electron level of hydrated redox particles distributes itself in a rather wide range, we may assume the presence of energy bands in which the redox electron level fluctuates the reductant particles form a donor band, and the oxidant particles form an acceptor band. The donor and acceptor bands overlap in the tailing of their probability densities as shown in Fig. 2-39. 

Water level fluctuations (draw-down zones in reservoirs and downstream lakes)... 

Accumulation Dose, Dose Interval, and Plasma Level Fluctuation... 

Development of a prolonged action dosage form of ketoprofen will bring about several desirable therapeutic advantages improvement of patient compliance minimization of blood level fluctuations reduction of the total amount of drug administered reduction of incidence of both local and systemic adverse side effects [3]. 

Hormonal levels fluctuate significantly in normal animals thus, hormonal change is not a highly sensitive indicator of reproductive toxicity. However, greater sensitivity can be obtained if multiple measurements of hormonal levels are made if carefully evaluated throughout the estrous cycle, significant alterations can indicate an adverse reproductive effect. 

At high gas velocities the bed level fluctuates. The ratio of maximum disturbed level to the average level is correlated in terms of GflGmf and the particle diameter by the equation... 

These geochemical tracers have been successfully applied to studies of the shells of a variety of marine organisms including bivalve and gastropod mollusks, ostracods, forams, brachiopods and solitary corals (47, 54, 57, 58). In the case of mollusk shells, for example, serial microsampling around the spiral whorls from earliest to oldest growth revealed sinusoidal variations in isotope ratios, which result from shell deposition in a seasonal environment (47, 50, 62-64). Our previous work showed this to be true of Olivella shells as well, where 8,sO levels fluctuate from warm summer temperatures to cold spring and winter temperatures (38). 

Acharyya, S.K., Lahiri, S., Raymahashay, B.C. and Bhowmik, A. (2000) Arsenic toxicity of groundwater in parts of the Bengal basin in India and Bangladesh the role of Quaternary stratigraphy and Holocene sea-level fluctuation. Environmental Geology, 39(10), 1127-37. 

Swenson, E.M., and Sasser, C.E. (1992) Water level fluctuations in the Atchafalaya Delta, Louisiana tidal forcing versus river forcing. In Dynamics and Exchanges in Estuaries and the Coastal Zone, Coastal and Estuarine Studies 40 (Prandle, D., ed.), pp. 191-208, American Geophysical Union, Washington, DC. 

The boundaries of a river mouth area are defined by the intense manifestation of mouth processes (Fig. 1). The river boundary of a mouth area or the head of a mouth area are defined either by a maximum propagation distance of water level fluctuations of marine origin (tides, storm surges) into a river during low-flow period or by the point, where the river channel is divided into delta branches (a delta head or a delta apex), if water level fluctuations of marine origin do not reach this point. In the first case, there is a part of the river mouth reach above the delta head (or a near-delta reach) between the river boundary of the mouth area and the delta head. In the second case, these two components coincide. The first principle of defining the upper boundary of a river mouth area is usually applicable to river mouths with small deltas or... 

The location of the mixing zone depends on the river water runoff, the pattern of the nearshore zone (deep, shallow, wide, narrow), the range and phase of tide, wind direction and force, and sea level fluctuations. Therefore, this zone undergoes both seasonal and short-term variations. 

Water levels in the oceans were lower by over 150 m during the ice ages, and similar water level fluctuations occurred in lakes and inland seas due to climatic changes and tectonic events. The sea level changes influenced the near-shore regions in the following ways ... 

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