In recent years, styrene waste gas has become a hot issue in the treatment industry due to its hydrophobicity and easy polymerization. This study is aimed at problems of long empty bed residence time low removal capacity from degradation by bio-trickling filter (BTF). A novel (NBTF) that we designed was used explore effects inlet concentration, (EBRT), starvation period on performance NBTF gas....

introduction: blood contamination of the canal during preparation can be a major problem in endodontics; this may result in apical microleakage. the aim of this in vitro study was to evaluate the effect of blood on apical microleakage of a resin-based root canal sealer (ah26) and a polymer-based root canal sealer (epiphany). materials & methods: in this experimental study, 50 decoronated centra...

introduction: filtering can greatly affect the quality of clinical images. determining the best filter and the proper degree of smoothing can help to ensure the most accurate diagnosis. methods: forty five patient’s data aquired during brain phantom spect studies were reconstructed using filtered back-projection technique. the ramp, shepp-logan, cosine, hamming, hanning, butterworth, metz and w...

the microfiltration 0.2 µm cellulose acetate (ca) membrane was modified by embedding antibacterial silver nano-particles in the membrane pores. this novel technique was developed to enhance the capability of the microfiltration membrane for removing microorganism including bacteria. the prepared membrane was characterized using scanning electron microscopy (sem), energy-dispersive x-ray spectro...

Optimization of operational parameters wastewater treatment system using the modeling technique may lead to enhance system’s and efficiency. The present research was carried out investigate efficiency conventional trickling filter (CTF) cascade cum (CCTF) for domestic wastewater. Both systems (CTF CCTF) were operated a period four months under temperature range 21–48 °C. maize cob (MC) date pal...