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https://www.selleckchem.com/products/Nafamostat-mesylate.html Single-walled carbon nanotubes (SWCNTs) are potential antibacterial material, and their antibacterial activity in aqueous solutions relies on surfactants to create strong interactions with bacterial cells. Here, we designed and synthesized a new family of cationic surfactants by introducing different positively charged hydrophilic heads, i.e., -(CH2)6N+(CH3)3Br-, -(CH2)2N+(CH3)3Br- and -(CH2)2N+PyridineBr-, to cardanol obtained from cashew nut shell liquid. These surfactants can efficiently disperse SWCNTs in aqueous solutions because benzene rings and olefin chains in cardanol enable strong π-stackings on SWCNTs. A much higher fraction of SWCNTs can be dispersed individually as compared to the commonly used surfactants, e.g., dodecylbenzene-sulfonate sodium (SDBS). SWCNTs dispersed in the cardanol-derived surfactants demonstrate significantly improved antibacterial activities. At the concentration of 0.5 wt.%, their minimum inhibitory concentration is 0.33 and 0.02 μg/mL against E. coli and S. aureus, respectively, which is only 0.8-1.5% of that of SDBS dispersed SWCNTs. The intense antibacterial activity can be attributed to better dispersion of SWCNTs and positive charges introduced by hydrophilic heads, which attract to negatively charged bacterial cell surfaces. These cardanol-derived surfactants are promising as sustainable surfactants for enabling various SWCNT applications. © 2020 IOP Publishing Ltd.Breathing variations during 4D CT imaging often manifest as geometric irregularities known as respiratory-induced image artifacts and ultimately effect radiotherapy treatment efficacy. To reduce such image artifacts we developed Respiratory Adaptive Computed Tomography (REACT) to trigger CT acquisition during periods of regular breathing. For the first time, we integrate REACT with clinical hardware and hypothesize that REACT will reduce respiratory-induced image artifacts ≥ 4 mm compared to convention

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