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Here, the Ni-based metallic nano-particles (Ni, NiMo and NiMoP) were electrodeposited on/in the surface of ERGO/CE substrate from a citrate-based electrolyte and their catalytic activities investigated towards methanol and ethanol electro-oxidation. The physicochemical characterizations of all prepared electrocatalysts were investigated by different electrochemical and non-electrochemical techniques. The electrocatalytic activities of the modified electrodes towards the electro-oxidation of methanol and ethanol were studied in 0.1 M NaOH solution by conventional electrochemical methods such as cyclic voltammetry and chronoamperometry. In the optimized electrodeposition conditions, the obtained electrochemical results indicate that the NiMoP/ERGO/CE displays dramatically improved electrocatalytic activity [Jpf (mA.cm−2) = 263.14 for methanol and Jpf (mA.cm−2) = 253.35 for ethanol], stability and poisoning tolerance towards the electro-oxidation of these fuels in alkaline solution. Finally, for comparison, the Ni (alone) and NiMo (binary) electrodeposited on/in the ERGO/CE (without P) and also studying the influence of the ERGO layers on the surface of CE, the NiMoP/CE (without ERGO) were prepared and applied as electrocatalysts.

A 10 weeks feeding trial was carried out to evaluate the effects of different carbon sources (sugar beet molasses: SBM + BFT, sugar: S + BFT, corn starch: CS + BFT) on water quality, growth performance, digestive enzymes activity, biofloc and fish microbial community and composition in biofloc based system for common carp fingerlings. Three hundred healthy fingerlings (22.5 ± 0.2 g) were randomly assigned to 12 rectangle tanks (70 L) at a density of 8.02 kg m− 3. Fish in BFT treatments were fed at 75% of the daily feeding rate (DFI) of control. Results showed a significant difference in water quality parameters among different culture systems; CS + BFT had the lowest amount of total ammonia nitrogen (TAN) at the end of culture period. No difference was observed between the BFT treatments in case of nitrite-N and nitrate N after 10 weeks and total suspended solids (TSS) also experienced a decline during the experiment. The fish yield was the highest in CS + BFT, which also had the lowest significant feed conversion ratio (P

In this work, nickel–cobalt alloy nanoparticles were electrodeposited on/in an electrochemically reduced nitrogen-doped graphene oxide (ErN-GO)/carbon-ceramic electrode (CCE) and the resulting nanocomposite (NiCo/ErN-GO/CCE) was evaluated as a low cost electrocatalyst for methanol and ethanol electrooxidation. Field-emission scanning electron microscopy coupled with energy dispersive X-ray spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy were used for the physical characterization of the electrocatalyst. To study the electrochemical behavior and electrocatalytic activity of the prepared electrocatalyst towards the oxidation of methanol and ethanol in alkaline media, cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy were utilized. Electrochemical investigation of the introduced electrocatalysts (NiCo alloy and Ni nanoparticles alone electrodeposited on/in different substrates) indicated that NiCo/ErN-GO/CCE has highest activity and stability towards methanol (Jp = 88.04 mA cm−2) and ethanol (Jp = 64.23 mA cm−2) electrooxidation, which highlights its potential use as an anodic material in direct alcohol fuel cells.

DDE, a metabolic breakdown product of the pesticide DDT, persists in the environment and acts as an androgen receptor antagonist. Androgen deprivation by castration of male mice causes changes in immune function and the lupus-like disease of NZB/W F1 hybrid mice is treated by androgens. Therefore, we hypothesized that the anti-androgenic effects of DDE may alter immune function, with consequences for autoimmunity. We treated both normal C57Bl/6 female mice and lupus-prone NZB/W F1 female mice with oil control or DDE, at 200 mg/kg for 3 days at the study's beginning. NZB/W mice were studied over 6 months and C57Bl/6 mice for 18 months. DDE did not alter organ or body weights. Proteinurea was increased in DDE-treated mice compared to age-matched oil-treated controls, as early as one month after treatment with DDE. By histopathology we observed glomerulonephritis sooner in kidneys of NZB/W mice treated with DDE than control. Kidneys of DDE-treated C57Bl/6 mice showed increased glomerular mesangium compared to kidneys of age-matched controls. By immunohistochemistry we saw increased glomerular expression of monocyte chemoattractant protein-1 and increased tubulointerstitial expression of osteopontin in response to DDE; upregulation of both chemokines occurs in murine lupus nephritis. We conclude that DDE impacts development and progression of autoimmune disease and continue to explore the mechanism of action.