However, the effect of the thermosphere on ionospheric seasonal variations declines with altitude decreasing, because molecular ions gradually become important.
While acknowledging material provision in old age remains critical in the context of insufficient state welfare, other aspects of intergenerational relations are gradually becoming important.
As the degree of hydrocarbon exploration in middle-shallow formations continues to improve, deeply buried formations are gradually becoming important targets for hydrocarbon exploration (Hu et al., 2013; Sun et al. 2013, 2015).
It has been acknowledged that with the national administrative reform and the increase in the rationality of the administrative system (Zhang 2001; Qu et al. 2009; Lv 2013), legalization, technology, and standardization have gradually become important issues for the development of the administrative system, and legal constraints have become even stronger for local governments.
As shown in Figure 4 and Figure 5, the initial response to selection is almost entirely based on standing variation, with de novo mutations becoming gradually more important.
Although the overall survival after transplantation has gradually improved, important concerns remain regarding long-term complications of HSCT, such as secondary malignancy (SM), chronic graft- vs-host disease (cGVHD), infertility, and quality of life (La Nasa et al, 2013).
The third column shows that the insurance-income interaction variable is significantly negative suggesting that, as income increases insurance becomes a gradually less important factor to explain utilization of outpatient care.
Introduction of closed loop systems for the delivery of insulin into clinical practice and clinical decision making may gradually tackle important clinical problems, such as reduction in the duration or severity of hypoglycaemia.
Because implementation of a new intake method needs to be performed accurately and gradually, an important step in this process is a feasibility study; however, this type of study shows considerable variety in both purpose and methods [ 25- 30].
