By identifying antibiotics that had the least phytotoxic effects on explants during genetic transformation, we evaluated the effect of various antibiotics on callus induction and morphogenesis from leaf explants and in vitro growth of Fragaria 9 ananassa Duch. cv. Toyonaka. Results showed that kanamycin (Kan) significantly inhibited callus induction, bud differentiation and root morphogenesis while carbenicillin (Carb), cefotaxime (Cef) and an equal concentration of Cef and Carb up to 500 mg L -1 had no significant effects on callus induction and shoot growth. Kan, even at 2.5 mg L -1 , significantly inhibited callus induction, shoot regeneration and root formation, while no shoots regenerated at concentrations above 15 mg L -1 . Rooting was completely inhibited in the presence of 50 mg L -1 Kan. Cef had negative effects on shoot regeneration from leaf explants and in vitro growth of strawberry. Compared to Cef, Carb at B300 mg L -1 significantly promoted shoot and root organogenesis. However, an equal concentration of Carb plus Cef could alleviate the negative effect of Cef on strawberry. Results from relative electrolyte leakage, root and antioxidant activities, O 2 Á-production rate, H 2 O 2 , proline and MDA contents showed that Kan, Cef and Carb caused electrolyte
Extensive research interest in hybrid battery‐supercapacitor (BSH) devices have led to the development of cathode materials with excellent comprehensive electrochemical properties. In this work, carbon nanotube (CNT)‐Mn3O4/CoWO4 triple‐segment hybrid electrode is synthesized by using a two‐step microwave‐assisted hydrothermal route. Systematic physical characterization revealed that, with the assistance of microwave, granular Mn3O4 and spheroid‐like CoWO4 with preferred orientation, and oxygen vacancies are stacked or arranged on CNTs skeletons to construct a rational designed hybrid nanocomposite with abundant heterointerfaces and interfacial chemical bonds. Electrochemical evaluations show that the synergistic cooperation in CNT‐Mn3O4/CoWO4 resulted in an ultra‐high specific capacity (1907.5 C g−1/529.8 mA h g−1 at 1 A g−1), a wide operating voltage window (1.15 V), the satisfactory rate capability (capacity maintained at 1016.5 C g−1/282.3 mA h g−1 at 15 A g−1), and excellent cycling stability (117.2% initial capacity retention after 13000 cycles at 15 A g−1). In addition, the assembled CNT‐Mn3O4/CoWO4//N doped porous carbon (NC) BSH device delivered a stable working voltage of 2.05 V and superior energy density of 67.5 Wh kg−1 at power density of 1025 W kg−1, as well as excellent stability (92.2% capacity retained at 5 A g−1 for 12600 cycles). This work provides a new and feasible tactic to develop high‐performance transition metal oxide‐based cathodes for advanced BSH devices.
Cobalt oxide (CoCo2O4) porous nanowires are synthesized by a microwave assisted hydrothermal process (MHP) and the followed annealing. It is found that the introduction of microwave assistance led to an...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.