Environmentally friendly substrates that are biodegradable may provide an alternative to mineral wool, which is commonly used in hydroponic growing technology. Little known about the relationship between physical characteristics of lignite substrate and cucumber yield. The study analyzed effect bulk density water holding capacity comparison wool EC nutrient solution on plant morphological param...

Deficiencies of phosphorus, copper, cobalt and selenium are the main mineral deficiencies in southeastern Australia that are likely to affect lactation, growth, carcass composition and wool production of grazing livestock being compared in genetic improvement programs. Genetic variation in mineral nutrition has been recognized from differences in the incidence of mineral disorders between breed...

Novel keratin-degrading bacteria were isolated from sand soil samples collected from Minia Governorate, Egypt. In this study, the isolates were identified as Bacillus amyloliquefaciens MA20 and Bacillus subtilis MA21 based on morphological and biochemical characteristics as well as 16S rRNA gene sequencing. B. amyloliquefaciens MA20 and B. subtilis MA21 produced alkaline keratinolytic serine pr...

A task-specific exposure matrix was designed for workers installing building insulation materials. A priori, a matrix element was defined by type of task (installer or helper), type of work area (attic spaces or wall cavities) and type of insulation material (slabs from mineral wool, fiberglass or flax; loose-fill cellulosic material or perlite). In the laboratory a mock-up (full scale) of a on...

An EPS ventilated panel, which may be applied as an external insulation to humid walls, is investigated. Dimensions of the air channel sections have been determined using Ansys software. Afterwards, drying rate walls externally insulated with EPS, mineral wool and panel has compared WUFI The increases when standard polystyrene heat loss through wall by less than 20%.