This study was carried out to evaluate the antibacterial activity of ceftiofur sodium as anti-infective chemotherapeutic agent belonged to the third generation of cephalosporins against different bacterial pathogens i...This study was carried out to evaluate the antibacterial activity of ceftiofur sodium as anti-infective chemotherapeutic agent belonged to the third generation of cephalosporins against different bacterial pathogens in vitro and birds. The obtained results showed that it was more effective and superior in its action than that the other compared antibacterial agents. The disc diffusion test revealed that most P. multocida isolates were highly sensitive to ceftiofur sodium with minimum inhibitory concentrations (MICs) ranging between 0.625 - 2.5 μg/ml and minimal bactericidal concentration (MBCs) equal or two folds of the MICs.展开更多
Cornulaca monacantha (CM) a desert plant has been utilized as adsorbent material for the removal of Hg (II) ions from contaminated water after treatment with acrylamide in alkaline medium to form carbamoylethylated Co...Cornulaca monacantha (CM) a desert plant has been utilized as adsorbent material for the removal of Hg (II) ions from contaminated water after treatment with acrylamide in alkaline medium to form carbamoylethylated Cornulaca monacantha (CECM). Three levels of CECM having different nitrogen content were prepared. The CECM samples were characterized by estimating the nitrogen content. The ability of CECM to adsorb Hg (II) was investigated by using batch adsorption procedure. The data of the adsorption isotherm was tested by the Langmuir, Freundlich and Temkin models. The removal of Hg (II) onto CECM particles could be well described by the pseudo-second order model. The adsorption rate of mercury was affected by the initial Hg (II) ion concentration, initial pH, adsorbent concentration and agitation time as well as extent of modification. The adsorption experiments indicated that the CECM particles have great potential for the removal of Hg (II) from contaminated water. The maximum adsorption capacity, Qmax of the CECM towards Hg (II) ions was found to be 384.6 mg/g at 30?C. Similarly, the Freundlich constant, n was found to be 2.03 at 30°C.展开更多
文摘This study was carried out to evaluate the antibacterial activity of ceftiofur sodium as anti-infective chemotherapeutic agent belonged to the third generation of cephalosporins against different bacterial pathogens in vitro and birds. The obtained results showed that it was more effective and superior in its action than that the other compared antibacterial agents. The disc diffusion test revealed that most P. multocida isolates were highly sensitive to ceftiofur sodium with minimum inhibitory concentrations (MICs) ranging between 0.625 - 2.5 μg/ml and minimal bactericidal concentration (MBCs) equal or two folds of the MICs.
文摘Cornulaca monacantha (CM) a desert plant has been utilized as adsorbent material for the removal of Hg (II) ions from contaminated water after treatment with acrylamide in alkaline medium to form carbamoylethylated Cornulaca monacantha (CECM). Three levels of CECM having different nitrogen content were prepared. The CECM samples were characterized by estimating the nitrogen content. The ability of CECM to adsorb Hg (II) was investigated by using batch adsorption procedure. The data of the adsorption isotherm was tested by the Langmuir, Freundlich and Temkin models. The removal of Hg (II) onto CECM particles could be well described by the pseudo-second order model. The adsorption rate of mercury was affected by the initial Hg (II) ion concentration, initial pH, adsorbent concentration and agitation time as well as extent of modification. The adsorption experiments indicated that the CECM particles have great potential for the removal of Hg (II) from contaminated water. The maximum adsorption capacity, Qmax of the CECM towards Hg (II) ions was found to be 384.6 mg/g at 30?C. Similarly, the Freundlich constant, n was found to be 2.03 at 30°C.
