macroelement


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macroelement

 [mak″ro-el´ĕ-ment]
a chemical element that has a minimal daily requirement greater than 100 mg; calcium, phosphorus, magnesium, potassium, sodium, and chloride are macroelements.
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In this paper, a new macroelement model is developed for the analysis of the nonlinear response of shallow foundations under cyclic loading.
where [P.sub.i] is the self-weight of each macroelement part (n entries) composing the kinematic mechanism; [P.sub.j] is the weight transmitted to the macroelement by adjacent structures (m entries); Fh is the generic external force applied to a macroelement part (k entries); [[delta].sub.x,i] and [[delta].sub.x,j] are the horizontal virtual displacements of each macroelement centroid; [[delta].sub.y,i] and [[delta].sub.h] are the vertical virtual displacements of each point of application of [P.sub.j] and [F.sub.h], respectively, while [L.sub.fi] represents the work done by internal forces.
The overall number of unknowns was 276, which is over three orders of magnitude less than in the FEM without macroelements. The reduction process takes from 11 to 16 sec for each macroelement, depending on the number of discontinuities embedded.
In 2009, prices for potash fell to a lesser extent than those for other types of fertilizer; what is more, potash is only the third most important macroelement for plants, after nitrogen and phosphorus.
Each element, whether a macroelement or microelement, does have a specific function in plant metabolism; most are found as part of an organic molecule.
Although numerous investigations have described macroelement circulation within loblolly pine ecosystems (Switzer and Nelson, 1972; Wells and Jorgensen, 1975; Jorgensen et al., 1980; Lockaby and Taylor-Boyd, 1986; Polgase et al., 1992; and many others), those studies have represented the integrated effect of multiple plant species and vegetation strata growing together within a single system.
Taciroglu, "Coupled macroelement model of soil-structure interaction in deep foundations," Journal of Engineering Mechanics, vol.
Culture solutions, i.e., macroelement solution, buffered solution and reducing solution used for in vitro fermentation were prepared to form artificial saliva according to the procedures modified by Tang et al.
Based on the 5,000 DWT ship finite element model (Figure 2) and the above analyses, both the high-resolution models and the macroelement models using the developed P-a curves and equations are generated as illustrated in Figure 19.
Experimental evidence from this study showed that for macroelement, mycorrhizal seedlings recorded higher K concentrations of leaves and roots, Ca concentration of leaves, and Mg concentrations of leaves and roots than non-mycorrhizal ones, and also exhibited lower root Ca concentration (Table 2).