Impact of doping with organic dopants and mixed doping with alkali metals and organic dopants on the absorption, electronic, optoelectronic, thermodynamic and nonlinear optical properties of dibenzo[b,def]chrysene in gaseous media: DFT and TD-DFT studies.

Context: In this study, we evaluate the geometrical, absorption, optoelectronic, electronic, nonlinear optical (NLO) and thermodynamic properties of dibenzo[b,def]chrysene molecule derivatives by means of DFT and TD-DFT simulations. In view of the aim of producing new high-performance materials for non-linear optics (NLO) by doping test, two types of doping were used. We obtained six derivatives by doping with organic dopants (Nitro, amide and ticyanoethenyl) and mixed alkali metal (potassium) and organic dopants.

Cognitive and behavioral approaches to occupational stress management: The case of adult education administrative workers in Nigeria.

Background: Those in administrative positions in adult education are more likely to suffer from stress because of the hard work they do, long hours in the office, a lack of adequate medical and welfare packages, and a lack of financial aid. In this study, adult education workers in Nigeria were assessed on the effectiveness of a cognitive and behavioral approach to managing occupational stress in public administration.

Method: This study was a group-randomized trial in which 94 adult education workers occupy public administrative positions within Enugu State, Nigeria, participated.