Mutualistic associations between plants and fungi
are beneficial to both partners. The fungi interact with the roots and improve, among others, the nutrient supply for their host plants. It is therefore evident to
promote crops by a targeted use of symbiotic fungi. Nevertheless, commercially available inocula for gardening or forestry are rendering only mixed results due to difficult cultivation conditions for the used fungal strains or even security problems.
Limitation of natural sources, especially of fossil resources, for base material that is currently used to produce polyamides and related composites together with the increasing demand of these products, promotes the search for renewable sources of the base material. Fermentation by genetically engineered bacteria gains increasing interest as one of these possible sources.
Cadaverine is a biogenic amine that can be produced by Corynebacterium glutamicum from the amino acid lysine by heterologous expression of a lysine decarboxylase from Escherichia coli.
Overexpression of the patA and patD genes from Escherichia coli in Corynebacterium glutamicum enables the latter to further metabolize cadaverine to 5 aminovalerate (5AVA), which is a potential base material for the production of nylon 5 and a C5 platform for the synthesis of base materials for other polyamides.
Chemical industry is facing an increasing demand on polyamides and related composites, whereas in contrast the accessibility of base material from fossil sources for their production alleviates. Therefore, in seek for alternative and renewable sources, bacterial fermentation has become into focus in several chemical production areas. The offered invention provides such a source for nylon production and related composites.
The very strong earthquake with a magnitude of 8.2 which occurred on the evening of 16.9.2015 (local time) hit a part of the Chilean coastline that was last…
Tunable lasers are used in a wide range of applications like profilometry, laser spectroscopy, optical sensors for measuring pressure and temperature and optical coherence tomography (OCT). In many applications, a very rapid tuning, i.e. shifting from one wavelength to another is desired. A powerful concept enabling ultra-high tuning rates is e.g. Fourier Domain Locking (FDML).
Design and method for positive locking torque transmission. Common steel wheels can be combined with modern carbon composite shafts. Chipping process steps become unnecessary due to the integration in the shaft manufacturing process.
Today's problems of data availability and quality in life cycle assessment and other environmental analyses hinder evidence based policy decisions as much as…