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- 저자 : Xiaoni Ai (검색결과 2 건)
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Tian Ai,Chunmei Xu,Lei Zhang,Ke Chen,Yonggui Wu,Shujuan Dai,Xiaolu Xiong,Shixin Jie,Xiaoni Jin,Zhongxu Yu 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.9
Novel efficient biochar of Goldenberry peels (GBPMW-H3PO4) was prepared through a microwave-assistedphosphoric acid activation method. It was characterized and used for removing two beta-lactamase inhibitors, sulbactam(SAM, first listed in Japan in 1986) and avibactam (AVI, first listed in the U.S. in 2015), from aqueous solution. Characterization confirmed that GBPMW-H3PO4 displayed a high surface area (720.046m2 g1), more abundant porestructure, smaller particle size, and higher thermal stability. The experimental results showed that the adsorption of thetwo antibiotics was a spontaneous, favorable, and endothermic process, highly dependent on solution pH. A contacttime of 60 min assured equilibrium, and GBPMW-H3PO4 followed pseudo-first-order kinetics (R2=0.9950-0.9977). Furthermore,the adsorption capacities of GBPMW-H3PO4 for SAM and AVI were 211.86 and 198.81mg g1, respectively,and the performance was better than that of unmodified biochar. Microscopically, the main mechanism could beexplained by - electron donor-acceptor interaction, hydrogen bonding interaction, -hydrogen bonding, hydrophobicinteraction, and electrostatic interaction. The study demonstrates that the microwave-assisted H3PO4 activationmethod could produce biochar, and GBPMW-H3PO4 was confirmed to be a low-cost and high-efficiency adsorbent forremoving beta-lactamase inhibitors from medical wastewater.
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Dawei Ying,Kai Zhang,Naipeng Li,Xiaoni Ai,Qionglin Liang,Yiming Wang,Guoan Luo 한국바이오칩학회 2012 BioChip Journal Vol.6 No.3
A droplet-based microfluidic device for long-term culture and longitudinal observation of Caenorhabditis eleganswas presented. The worms were encapsulated in W/O droplets and controllably introduced into separate chambers, where the medium/oil or medium/air interface can be manipulated by a gravity -actuated technique, for lifelong culture. This device also contained clamp structures for reversibly immobilization of each worm separately, and thus we were able to track more details about each worm. Several phenotypes of worms were monitored from their fourth larva stage to death. The relationship between worm body length, stroke frequency and lifespan with this device was then studied. This device had a potential in various longitudinal researches on C. elegans including aging, drug screening, toxicity evaluation and etc.
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