density

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Related to Mass density: weight density, Specific weight

density

In zoning, the number of things allowed per unit of land, such as number of houses, occupants,or families per acre.

References in periodicals archive ?
The root mass density of the vegetation-restored steep gully slopes was 3.0-12.7 times that of the control site (P<0.05).
G = 4.788e9(1 - [sigma]) / ((1 + [sigma])(1 - 2[alpha])) = 7.074x [10.sup.9]N / [m.sup.2] where [sigma] = 0.333 is the Poisson's ratio and mass density is [rho] = 1420kg / [m.sup.3], [T.sub.exc] = 0.1[micro]s, stiffness-proportional damping matrix was, C = [mu]/[E.sub.eqv] K, and the relaxation constant [tau] of the Maxwell viscosity model was used.
where, A means the area (m2), [delta]i is the damping coefficient (s2/kg), [rho]a is mass density of air (kg/m3), Lt and h are lengths (m) as shown in Fig.
With this gravitational potential, and using the equations (4) and (5) we have that the circular velocity and the surface mass density can be written respectively as
Previous works have demonstrated that physical parameters of the material (i.e., the mass density, Young's modulus, and Poisson's ratio), the geometric dimensions of the unit, and the working frequency all have influences on the sound behavior of the unit, including reflected ratio and phase [30-32].
There are two sensible descriptions on the fluid dynamics, Eulerian and Lagrangian descriptions; both are aiming at formulating the equations for mass density, momentum, and energy in a fluid.
Next, the fibrin clot structure was determined by measuring the OD at 405, 540, 608, and 690 nm after an overnight incubation, and the fiber mass-length ratio, fiber diameter, and fiber mass density were calculated [33].
The sensitivity of the graphene-based resonator was much smaller than those of graphyne-based resonators due to the effect of mass density. The carbon atomic number of graphene is 3984, which is higher than that obtained for graphynes in the analysis, such as 2728 for [gamma] type and 2166 for [alpha] type, although the stiffness of graphene is larger than that of graphyne [4].
Researchers are investigating a possible link between vitamin K deficiency and an increase in bone fractures, osteoporosis, and lower bone mass density. And vitamin K may also help to prevent calcification of blood vessels and loss of vessel elasticity.
(3) One study reports that short-term use of red clover by postmenopausal women may have small health benefits on bone mass density, cognitive abilities, and plasma lipid concentrations due to the presence of estrogen-like compounds called isoflavones.
Their early work laid out the mathematics of forecasting and described fronts, showing that they are defined by a change in air mass density. Changes in wind speed, humidity, or pressure are all secondary.