Up to now, separation and purification of succinate from the fermentation broth is still an economical obstacle for its biological production.
Secondly, the cases depict several of the social, economical and structural obstacles identified for using the free government health services.
The Hoover Dam was completed two years ahead of schedule and under budget despite political, economical, technical, and organizational obstacles.
Differences in each country's road network features, car vehicle stock, driving behavior, characteristics of roadside obstacles and economical aspects justify the need for evaluating the merit of specific approaches to roadside safety issues.
Hexose and pentose cofermentation is regarded as one of the chief obstacles impeding economical conversion of lignocellulosic biomass to biofuels.
Enzymatic biomass conversion enabled by dilute acid pretreatment processes has been studied for many years but remains one of the key obstacles to the economical production of lignocellulosic biofuels today.
Modifying people's behavior represents another obstacle to the economical disposal of yard waste.
Like many youngest children, Natalia found it hard to get a word in edgewise; later, she credited her clear, economical prose style to this noisy obstacle.
Although lignocellulosic sources are also considered as a promising feedstock for bioethanol production, there are several obstacles, such as the lack of an efficient, economical and environment friendly pretreatment process, that still needed to be overcome [ 6].
The lack of a good FRP guideline is one of the major obstacles to utilise FRP structures in a reliable and economical way.
