In the current new stage, the ecological impacts and resource use per capita are main constrains to future development in Beijing.
And it seems clear that the zero lower bound has not been the main constrain on the European Central Bank over the past two years.The more important point is that one need not resolve this intellectual debate to improve conditions across the global economy.
The main constrain of the reactor design is the achievement of organic chlorine concentration under the ecological limit of 10 ppm.
The minimization of the overall costs is the problem's optimization target, while the main constrain is the fulfillment of the users' request of electricity, heat, cooling and drinking water.
Poly vinyl alcohol) (PVA) is a semi-crystalline compound with comparatively high carbon content (ca. 54.5%), and easily splits into hydroxyl groups in the polymer chain which makes it favorable for use as a precursor for the production of the carbonaceous materials; however, low yield is the main constrain.
This method is useful especially in optimization problems, having no explicit constraint on the main lobe width, such as minimizing the sidelobe levels or minimizing main lobe width constrained to a predetermined value of sidelobe level.
While low temperature stress remains as the pivotal limitation in rice production in temperate regions (Andaya and Tai 2006), the acclimation to long day conditions of northern rice cultivars represents one of the main constrains during their expansion, and the most evident difference with the cultivars that remained in tropical latitudes (Izawa, 2007).
Considering that sunflower production is expanding to arid regions, tolerance to abiotic stresses as drought, low temperatures and salinity arises as one of the main constrains nowadays.
In addition, the survey obtained the main reason that partners wanted to live apart (i.e., financial reasons, to keep independence, because of children, not yet ready for living together, other) or the main constraining circumstances (i.e., work circumstances, financial circumstances, housing circumstances, legal circumstances, my partner has another family, other).
