| 摘要 |
Polyethylene films may include a polyethylene copolymer polymerized in the presence of a hafnium-based metallocene catalyst, wherein the polyethylene comprises a solubility distribution breadth index (SDBI) less than or equal to 23°C; a melt index (12) less than 1.5; a flow index (121) of from about 16 to about 28; and a melt flow ratio (121/12) of from about 18 to about 23. The film has a cling value that is at least 60% of a cling value the film has at 48 hours after time zero, and wherein time zero is equal to less than 24 hours. Polyethylene films may include a polyethylene copolymer polymerized in the presence of a hafnium-based metallocene catalyst, wherein the polyethylene comprises a solubility distribution breadth index (SDBI) less than or equal to 23°C; a melt index (12) less than 1.5; a flow index (121) of from about 16 to about 28; and a melt flow ratio (121/12) of from about 18 to about 23. The film has a cling value that is at least 60% of a cling value the film has at 48 hours after time zero, and wherein time zero is equal to less than 24 hours. In alternative embodiments, the invention provides co-culture methods for improving the yield, economy or efficiency of a biosynthesis of a compound by a. microbial organism. In alternative embodiments, the invention provides co-culture methods for improving the yield, economy or efficiency of a biosynthesis of: an alcohol; a diol; a triol; a monohydric, a dihydric or a trihydric alcohol; a lower monohydric, a dihydric or a trihydric alcohol; a butanediol; a germinal or a vicinal diol; or a 1,4-Butanediol (BDO). In alternative embodiments, a co-culture of the invention uses a nutrient source comprising a biomass or a feedstock. |
