Therefore, we think it is reasonable to expect a loss of diversity during crop dispersal, resulting in a declining gradient of crop diversity from the origin.
Because the P-D length of the uncondensed distal tip of the chicken limb bud decreases during the period of pattern formation [54] as the potency of the AER wanes [10] we have incorporated into our model the hypothesis that a temporally declining gradient of FGF with its source in the AER determines the P-D length of this distal region, which we term the "LALI zone".
Cadmium transported to the shoots of cereals prior to anthesis accumulates in the leaves and stems in a declining gradient towards the developing spike [ 20, 27, 28].
Cadmium accumulated in the shoot tissues (especially the leaves) in a declining gradient towards the head, a pattern that is typical of cereals [ 20, 27, 28].
Following application of trace quantities (250 pM) of Cd to the fourth stem-internode of intact durum wheat, Cd accumulated in the stem in a declining gradient towards the spike [ 37].
FSH-receptors localize mainly to the granulosa [ 55] while LH-receptor are first present close to the theca and emerge later in the granulosa [ 15, 16] with a declining gradient in LH-receptor expression towards the center of the follicle [ 83, 124].
A significant decline in gradient peak tumour blood flow by DCE MRI was observed in six patients treated at 60 mg m−2.
The concave-upwards longitudinal profiles of such rivers have been interpreted as caused by the erosive effect of increasing water discharge down-stream being compensated by declining channel gradient to achieve spatially uniform, or gradually varying, erosion rate.
In contrast, a declining social gradient was associated with increased risk of mild-moderate ID.
They have declining density gradients of population and employment that extend outward from a station and have a high level of mixed-use land.
