Hydroponic systems are an attractive form of urban agriculture due to their low weight load, inert substrate conditions, and overall better control plant nutrition growth. However, gaining food sovereignty cannot be at the cost increasing environmental impacts, such as eutrophication nonrenewable resource depletion, associated with phosphorus fertilizer use. Struvite, a wastewater byproduct, is...

Roots of Vetiveria zizanioides Nash (Mae Hae; Thai ecotype) planted in three different cultivation systems (normal soil, normal soil with added microbes and semi- hydroponically) were extracted using a simultaneous steam distillation and solvent extraction (SDE) apparatus. Yields of the essential oils obtained were 0.27, 0.18 and 0.06%, respectively. The separation profiles obtained by comprehe...

OBJECTIVES Recombinant protein production processes in Escherichia coli are usually operated in fed-batch mode; therefore, the elaboration of a fed-batch cultivation protocol in microtiter plates that allows for screening under production like conditions is particularly appealing. RESULTS A highly reproducible fed-batch like microtiter plate cultivation protocol for E. coli in a micro-bioreac...

A microfluidic device for microbial single-cell cultivation of bacteria was modeled and simulated using COMSOL Multiphysics. The liquid velocity field and the mass transfer within the supply channels and cultivation chambers were calculated to gain insight in the distribution of supplied nutrients and metabolic products secreted by the cultivated bacteria. The goal was to identify potential sub...

Fallow management is a common practice of traditional shifting cultivation in Southeast Asia and it survives throughout the region for many centuries (Spencer 1966). The systems are often found among the ethnic minorities in the region but governments, on the other hand, see the system as a primitive form of agricultural production, destruction to the forests and watersheds, wasteful and unprod...