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Background: Disposal of pharmaceutical compounds to the environment as an emerging pollutants cause significantly concerns and it is necessary to use the new methods of sewage treatment for removal of these compounds. The aim of this study was to feasibility using of O3/H2O2 process on diclofenac inhibitory impact on the specific methanogenic activity of anaerobic biomass.Methods: Twelve anaerobic digestions test in the batch model were carried out before and after using an O3/H2O2 process at the 500 ml reactors with 30% anaerobic biomass and 70% substrate to survey the inhibitory impact of diclofenac on the specific methanogenic activity of anaerobic biomass. The replacement liquid method was used. Duration of each test range was 8-16 days.Findings: Cumulative methane production in concentrations of 25, 50, 100, 175, 250 and 350 mg/l of diclofenac were 764.24, 845.42, 82, 102.09, 25.42 and 1.64 ml, respectively. These productions were 8.61, 26.65, 4.1 and 4.1 ml in concentrations of 25, 100, 250 and 350 mg/l, respectively, after 180 min pretreatment with O3/H2O2 process. It was demonstrated that methane production was reduced in all concentrations after ozonation process.Conclusion: It is concluded that the high concentration of diclofenac has inhibitory effects on the anaerobic digesters and after ozonation process pretreatment on diclofenac, the intermediates compounds can be produced which probably had very diverse effects on the anaerobic bacteria in digesters. They had also a lower biodegradability.Key Words: Anaerobic Digestion, Diclofenac, Specific Methanogenic Activity (SMA), Advanced Oxidation Process

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Background: Intellectual capital in organizations is most often generated through knowledge sharing at work, so the most significant feature of knowledge management is to prevent knowledge hiding, since it damages organizations, particularly those involved in health care services.
Methods: This descriptive-correlational study was conducted on the statistical population of employees working at Isfahan University of Medical Sciences, Isfahan, Iran, in autumn and winter 2020. For this purpose, a total number of 291 individuals were selected via the Krejcie and Morgan’s Table as the statistical sample using the simple random sampling technique. The analytical data were subsequently collected through the Positive and Negative Affect Schedule (PANAS), the Ethical Leadership Scale (ELS), the Propensity to Morally Disengage Scale (PMDS), and the Knowledge Hiding Scale (KHS), and then analyzed by means of structural equation modeling (SEM) using the SPSS software and the SmartPLS software.
Findings: The correlation between negative affectivity and knowledge hiding (r = -0.132, t = 0.928) as well as the moderating role of ethical leadership in the correlation between negative affectivity and knowledge hiding (r = 0.352, t = 1.856) and that between negative affectivity and moral disengagement (r = 0.030, t = 0.210) were not confirmed. On the other hand, the correlation between negative affectivity and moral disengagement (r = 0.434, t = 3.794) and that of moral disengagement and knowledge hiding (r = 0.506, t = 4.013) as well as the mediating role of moral disengagement in the correlation between negative affectivity and knowledge hiding [variance accounted for (VAF) = 0.623, Z-value = 2.706] were established.
Conclusion: Employees with negative affectivity activate moral disengagement as a secondary cognitive process and obscure their personal ethical principles in so far as possible, which makes them hide the knowledge demanded by other members.