Sentence examples for regeneration problem from inspiring English sources

On this point, it is important to understand the purpose for immobilizing the catalyst to floating support, such as pumice, was not to increase the photocatalytic activity of catalyst, but to overcome the regeneration problem of nanosized catalyst.

This approach can effectively enhance the carbohydrate conversion rate and overcome the regeneration problem of the solid catalyst arising from the one-step conversion method.

However, the high cost, disposal and regeneration problems of activated charcoal made the potentiality of open burnt clay for the effective removal of CR from aqueous solution a very promising alternative.

Most studies have focused on addressing oak regeneration problems and many of these suggested that oak regeneration failures occur where site conditions favor the establishment and growth of competing species that capture the growing space following crown release.

Our results show a large structural gradient in European wood-pastures, as well as regeneration problems varying in their severity, highlighting the importance of social-ecological context for wood-pasture conditions.

The urgency of forest regeneration problems in a context of increased logging pressured the Branch to transform its research from a spasmodic shared burden to the exclusive activity of a few individuals.

Given the major forest regeneration problems associated with high white-tailed deer densities in much of the eastern United States (Rooney and Waller 2003; Côté et al. 2004), it is reasonable to wonder if low rates of sapling recruitment beneath beech canopies might be driven in part by deer herbivory.

Currently, argan is facing critical regeneration problems resulting from overgrazing of young sprouts and trees by goats, coupled with inadequate protection; consequently, argan tree genetic diversity is severely threatened.

Despite good results from many studies which used chitin as a membrane for guided bone regeneration [15 18], problems with the exclusive use of chitin involve its poor mechanical properties.

For all its melancholy, the sentiments hold firm: progress and regeneration are not the problem; the problem isn't even sport and big money.

Despite of promising experimental results in terms of tissue regeneration two key problems are still to be solved: sufficient biomechanical stability and chondroprotection.