phenylalanine dehydrogenase (phedh; ec 1.4.1.20) is an important enzyme of amino acid dehydrogenases family that increasingly used as a valuable biocatalyst in neonatal screening kits and synthesis of l-phenylalanine. the goal of this literature was to find a suitable purification method for recombinant bacillus badius phedh by practical comparison between chromatographic and polyvinyl pyrrolid...

background: taq dna polymerase is a very important enzyme for molecular biological studies such as dna amplification and dna sequencing by the pcr. it is a standard enzyme that is used in 90% of molecular biology labs today. the aim of this study was to produce taq dna polymerase enzyme in e. coli by a reliable, practical, simple and low cost method.materials and methods: in this study, the taq...

Objective: To study plants purification capability of  Cu on two cultivars of vetch plant (Vigna Radiata) in contaminated soils and their effects on morphological characteristics. Methods: we conducted a completely randomized trial as factorial. Different concentrations of  Cu (0, 150, 300, and 400 mg/ Kg of dried soil) were used. After four weeks growth on contaminated soil, parameters such as...

Recently, the ecological awareness of society and need to take care our surroundings natural environment has significantly increased. There is also an urgent problem searching for new, environmentally friendly techniques its purification (soil, ground surface waters, sewage sludge air) with use living organisms, especially higher plants. One plant species investigated phytoremediation canna. Te...

Land use change is an important scientific issue recognized for its potential to alter ecosystem services (ESs), especially water-related (WRESs). Using the integrated valuation of and trade-offs (InVEST) model, this study quantified mapped spatiotemporal variations in land corresponding WRESs Bashang area Hebei Province, China (BAHP) investigate how impacted by means scenario analysis, especia...

Hydrological ecosystem services (HESs) such as water purification and supply are important for providing other drinking water, recreation, human health. Land use change caused by urbanization is a direct driver affecting the provision of HESs. The quantification integration HES into watershed management urban planning have become increasingly important. In this study, we highlighted an InVEST C...

B. rALANCE is a fundamental part of nature's law. But man's activities have a way of upsetting nature's balance and usually.it takes a serious unbalance to make us see the situation and try to correct it. Our increased concern over our own diets exemplifies an unbalance. The variety of foods that comprise the average normal diet should provide enough of the essential minerals and vitamins to me...