The bactericidal activity of combinations of antibiotics have been studied by two methods; in onie, li(quid media are used (Kirby, 1944; Hobby and Dawson, 1946; Price et al., 1949; Bigger, 1950; Bliss et al., 1952; Jones and Finland, 1956) and in the second, solid media are preferred. A simplified method using li(quid media, suggested by Jawetz and co-workers (1955), can be used in the clinical...

The existence of pronounced cytoplasmic pH gradients within the apices of tip-growing cells, and the role of cytoplasmic pH in regulating tip growth, were investigated in three different cell types: vegetative hyphae of Neurospora crassa; pollen tubes of Agapanthus umbellatus; and rhizoids of Dryopteris affinis gametophytes. Examination of cytoplasmic pH in growing cells was performed by simult...

The use of dyes in the textile industry is detrimental to aquatic biota and humans. Pollution caused by dye waste can be overcome adsorption methods using adsorbents such as LDH. LDH known an adsorbent that often found process removing waste, but repeated not effective. This modification a supporting material chitosan. Modification done coprecipitation or precipitation simultaneously at pH 10. ...

background & aims of the study: dyes are one of the widespread chemicals which may have many adverse effects on life cycle. thus, this study was conducted to survey the rb19 dye removal efficacy from aqueous solution, using the sio2 nanoparticles. materials and methods: this study was an experimental-lab study. the batch adsorption system were utilized to evaluated the rb19 dye removal efficien...

abstract background and purpose:the main objectives of this research were to evaluating the application of electrocoagulation process for 198 dye from the aqueous phase and determining the optimum operating conditions to the dye removal using aluminum and iron electrodes. materials and methods:the present study was conducted in bench-scale. the spectrophotometer dr 5000 was used to determine th...