one of the most important concerns in tehran municipal landfill is the production of leachate and its potential for water resources pollution, this study was undertaken to examine feasibility of biological and physico/chemical treating of high-strength landfill leachate that was collected from tehran municipal landfill. average cod of the leachate in aerobic submerged membrane bioreactor is 68...

a simple, inexpensive and efficient method was used for extraction and determination of fexofenadine and levocetirizine with three–phase hollow fiber liquid-phase microextraction and high-performance liquid chromatography. several parameters influencing the extraction recoveries such as the nature of organic extraction solvent, ph of donor and acceptor phases, stirring rate, extraction time and...

anew and effective electrospinning method has been developed for producing aligned polymer nanofibers. the conventional electrospinning technique has been modified to fabricate nanofibers as uniaxially aligned array. the key to the success of this technique is the creation of a rotating jet by using a cylindrical collector in which the needle tip is located at its center. the unique advantage o...

One of the biggest global public health issues, cancer has a negative impact on people's and quality life. Therefore, it is undeniable that interest in drugs for treatment increased. On other hand, addition to patient safety during administration used due their possible toxic properties, crucial maintain safe working environment safeguard professionals who provide from possibility coming into t...

Hydrophilic polyethersulfone (PES) hollow fiber membranes were prepared via non-solvent induced phase separation (NIPS) by addition of polymeric additives as a membrane modifying agent. The effect of the addition of hydrophilic surfactant Pluronic F127, Polyivinylpyrrolidone (PVP), and Tetronic 1307 on the performance of the final PES hollow-fiber membrane was investigated. The morphology of fa...

It is well known that Li-ion cells containing manganese oxide-based positive electrodes and graphite-based negative electrodes suffer accelerated capacity fade, which has been attributed to the deposition of dissolved manganese on the graphite electrodes during electrochemical cell cycling. However, the reasons for the accelerated capacity fade are still unclear. This stems, in part, from confl...