An aqueous Na-ion based hybrid capacitor has been successfully developed by highly porous graphitic carbon (HPGC) derived by waste writing paper and a new electrode material as negative and positive electrode, respectively. HPGC was prepared via hydrothermal carbonization and subsequent KOH activation of waste writing paper which showed highly porous stacked sheet like morphology with exceptionally high BET specific surface area (1254 m 2 g -1 ). HPGC exhibited typical electrical double layer capacitor (EDLC) behavior with a high specific capacitance of 384 F g -1 and good negative working potential (-1.0 V) in aqueous electrolyte. On the other hand, Ni2P2O7 was synthesized by simple co-precipitation technique and tested as cathode material which delivered a maximum specific capacitance of 1893 F g -1 at 2 A g -1 current density. The fabricated HPGC||Ni2P2O7 hybrid device displayed excellent cyclic stability up to 2000 cycles and delivered maximum energy density of 65 W h kg -1 at 800 W kg -1 power density in Na-ion based aqueous electrolyte.capacitive electrode by hemp carbonization and assembled

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This study explored the relationship between Baumrind’s parenting prototypes and the academic achievement, judged by grade point average (GPA), of Korean American adolescents. It also examined the relative contribution to youth’s academic achievement of perceived maternal and paternal warmth and control and involvement in schooling. Approximately 74% of the sample youth did not fit any of Baumrind’s types, raising questions about their usefulness for ethnic research. Analysis of the remaining 26% showed that youth raised by authoritative and permissive fathers (but not mothers) performed better than youth raised by authoritarian fathers. Youth raised by authoritative fathers, however, did not perform significantly better than youth raised by permissive fathers. An analysis of perceived parental warmth and control exposed a positive correlation between perceived maternal and paternal warmth (but not control) and adolescents’ GPA as well as a moderator effect of perceived maternal control. Moreover, perceived paternal (but not maternal) involvement in schooling partially mediated the relationship between fathers’ reported warmth and adolescents’ GPA.

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