Kombucha is a fermented tea beverage which is traditionally prepared by fermenting sweetened black or green tea (Camellia sinensis L.) with symbiotic consortium of bacteria and yeasts (SCOBY). In this study, lemon balm (Melissa officinalis L.) was used as the only nitrogen source for kombucha fermentation. During the seven-day fermentation process, pH value, titratable acidity (TA), total pheno...

this research was carried out to investigate the effect of different levels of potassium (in nutrient solution), harvest season and plant density on yield and quality of strawberry cv. selvain hydroponic system conditions. the tests were done in the greenhouse, and laboratories of horticultural science department of the university colleg of agriculture and natural resources of tehran university...

Abstract Role of composition and the nature crosslinking on properties titania-chitosan beads have been investigated in detail. The investigations were done order to explore feasibility design synthesis with bespoke functionality based intended application. This would greatly enhance potential for industrial application these biopolymer beads. Beads varying compositions (of titania chitosan) pr...

The historic Penouta mine in northwest Spain is the focus of efforts to extract tantalum from tin mining waste. This paper describes the characterisation of the tantalum mineralogy of waste material from the deposit. Characterisation was realised using quantitative mineralogy and geochemistry. This paper further identifies other phases of interest and investigates the potential for extraction u...

BACKGROUND T wave alternans (TA) is a repolarisation phenomenon manifesting as a microvolt beat to beat change in the amplitude of the T wave and ST segment. TA has been shown to be a predictor of arrhythmic risk in unselected myocardial infarction populations. TA has not been used to differentiate risk within the ischaemic cardiomyopathy population. METHODS The subjects investigated comprise...

Linking structural and compositional features with the observed electrochemical performance is often ambiguous sensitive to known unknown impurities. Here an extensive experimental investigation augmented by computational analyses linked characterization of in situ nitrogen-doped tetrahedral amorphous carbon thin films (ta-C:N). Raman spectroscopy combined X-ray reflectivity shows nitrogen disr...

While the social economy originated in Europe (Desroche, 1983; Gueslin, 1997; Vienney, 1994), by the nineteenth century it emerged in North America as well, particularly in Canada and Quebec with its ties to the United Kingdom and France as well as other European countries, especially Germany and Belgium. Today, it is interesting to explore the renewal of the social economy in Europe and in Can...

Abstract In this study, copper-based-Nb 1-x (Ti/Ta) x Se 2 composites were prepared by powder metallurgy, and Nb copper-based with different Ti/Ta doping atomic fractions studied. physical, electrical tribological properties. Among them, the amount of Ti Ta has an important influence on properties composite material. The can improve mechanical, copper matrix within a certain range, especially w...

The aim of this study was to determine organic acids and individual sugars as well as carotenoids in fruit of Kumquat[Fortunella margarita (Lour.) Swingle] on different rootstocks.  On other hand, the purpose of this study was to identify the rootstock that could produce the highest amount of sugars. The content of individual sugars and organic acids in fruits were determined by HPLC, ...