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B. Balamuralitharan,Suresh Kannan Balasingam,S. N. Karthick,Ananthakumar Ramadoss,Manab Kundu,박진수,조인호,프라바카르,전용석,김희제 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.71 No.-
Iron pyrite (FeS2) is an interesting mineral in the transition metal dichalcogenide group due to its highabundance in the earth’s crust which can be used for various electrochemical energy storage applications,such as batteries and supercapacitors; however, it suffers from low rate capability and poor cycleperformance, which hampers its use from large-scale commercial applications. In the present study, irondisulfide microspheres anchored onto a reduced graphene oxide matrix (rGO-FeS2 hybrid) were grownusing a superficial hydrothermal method. For comparison, rGO-free iron disulfide material wassynthesized under the same hydrothermal conditions, and uniformly distributed FeS2 micro-sizeflowerswere formed. The energy storage capacity of both electroactive materials (FeS2 and rGO-FeS2 hybridmaterial) was tested for supercapacitor applications in a symmetric cell configuration. The pristine FeS2microflower electrode exhibited an areal capacitance of 70.98 mF cm 2 at 5 mV s 1. On the other hand,the rGO-FeS2 hybrid microsphere electrode exhibited an enhanced areal capacitance of 112.41 mF cm 2 atthe same scan rate with an excellent capacitance retention of 90% over 10,000 cycles. The improvedelectrochemical performance of the rGO-FeS2 hybrid material is due mainly to its improved electricalconductivity, high surface area indicating an enhanced electron, and ion transfer mechanism. This studysuggests that the rGO-FeS2 hybrid electrode material has potential applications in energy storage devices.
Li, J.Y.,Suzuki, K.,Koike, Y.,Chen, D.S.,Yonezawa, T.,Nishihara, M.,Manabe, N. Asian Australasian Association of Animal Productio 2005 Animal Bioscience Vol.18 No.10
To determine the effects of short-term dietary supplementation of branched-chain amino acids (BCAAs) during nursing (from 3 to 28 days of age) on plasma BCAA levels and subsequent growths in cattle, 12 nursing male Holstein calves, randomly assigned to control and treatment groups (n = 6 in each group), orally received a daily supplement of essential BCAAs (2 g/kg body weight/day; 1:1:1 of valine, leucine and isoleucine) or not. The plasma BCAA levels increased linearly after the administration. During the treatment period, average daily gain (ADG) was lower in the treatment group (0.43${\pm}$0.07 kg/day) than the controls (0.71${\pm}$0.07 kg/day, p<0.05). However, at 2 months of age, ADG was significantly higher in the BCAA-treated group (1.16${\pm}$0.26 kg/day vs. 0.51${\pm}$0.06 kg/day, p<0.05). Furthermore, at age 8, 9 and 10 month, ADG in the treated group (1.35${\pm}$0.23, 1.46${\pm}$0.07 and 1.60${\pm}$0.16 kg/day, respectively) showed a linear increase and was significantly higher than that in the control group (0.88${\pm}$0.14, 0.70${\pm}$0.21 and 1.11${\pm}$0.11 kg/kg, respectively, p<0.05). Overall, ADG was 15.6% higher in the treatment group (1.26${\pm}$0.05 kg vs. 1.09${\pm}$0.04 kg; p<0.05). The final body weight at slaughter was 14.8% higher in the treatment group (759.5${\pm}$17.7 kg vs. 661.7${\pm}$21.2 kg, p<0.01). Thus, the supplementation of BCAAs during nursing improves ADG and carcass weight in cattle and is a useful husbandry technique for beef cattle.