This study aimed to investigate the impact of parent companies and other multiple large shareholders (MLSs) on audit fees in Japanese firms, where stakeholder-oriented corporate governance is adopted. In such a firm, monitoring by many stakeholders can mitigate conflicts among shareholders. However, because key these firms tend resolve information asymmetry problems through insider communicatio...

Background: Based on the previous studies, antibiotics can have affected biological properties of biomass and fouling mixed liquor in aeration tank. The present study was conducted to explore mechanisms membrane bioreactor (MBR) system during treatment wastewater containing erythromycin (ERY) antibiotic under several suspended solids (MLSS) concentrations. Methods: A lab-scale two-chamber MBR e...

The occurrence of TERT promoter mutations has been well described in soft tissue sarcomas (STS). However, the biological role of these mutations as well as their impact on telomere length in STS is still unclear. We analyzed 116 patient samples diagnosed with 22 distinct histological subtypes of bone and STS for the occurrence of TERT promoter mutations by Sanger sequencing. We observed TERT pr...

Emissions of H2S from publicly owned treatment works is a serious problem, therefore collection and treatment of these emissions is essential. In this work, the performance of a bench scale activated sludge system used for the removal of H2S from foul air was investigated, and the effects of H2S concentration (5 to 50 ppm,) on COD reduction and biomass settleability were studied. After biomass ...

Background and purpose: The performance of full-scale moving bed biofilm reactor (MBBR) was evaluated as an alternative for upgrading of Kish Island Mirmohana wastewater treatment plant. In this study activated sludge process upgrade to MBBR process and different operating parameters were compared. Materials and Methods: Effect of upgrading on different parameters such as organic loading rate (...

a lab-scale cross flow membrane bioreactor (cf-mbr) was operated to determine the biokinetic coefficients under mlss concentrations of 5000 and 3000 mg/l. the investigation showed that the yield (y), the endogenous decay coefficient (kd), the maximum specific growth rate (μm) and the saturation constant (ks) were 0.276 mg/mg, 0.07 /day, 0.653 /day, and 396.62 mg cod/l respectively for mlss 500...