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Coronavirus disease is an emerging infection caused by a novel coronavirus that is moving rapidly. High resolution computed tomography (CT) allows objective evaluation of the lung lesions, thus enabling us to better understand the pathogenesis of the disease. With serial CT examinations, the occurrence, development, and prognosis of the disease can be better understood. The imaging can be sorted into four phases: early phase, progressive phase, severe phase, and dissipative phase. The CT appearance of each phase and temporal progression of the imaging findings are demonstrated. [ABSTRACT FROM AUTHOR]

Highlights • Three kinds of resins have good adsorption performance for BA dye. • The adsorption capacity of AC-2-DETA is higher 93.0% than H-103 for BA dye. • Adsorption mechanism of AC-2-DETA is physical-chemical interactions. Abstract In this study, the adsorption behaviors of a series of systematically designed resins with different physical textures and chemical characteristics were investigated towards sulfonic acid dyes and the adsorption mechanism involving physical and chemical adsorption was elaborately explored. The newly synthesized resins include the hyper-crosslinked resin series which possesses the largest physical adsorption capacity, aminated resin series which has the largest uploading of amino groups and aminated crosslinked resin series which was functionalized with amino groups after the optimization of physical structure. The aminated crosslinked resin AC-2-DETA displayed the best adsorption performance (325.63 mg/g) towards BA and the adsorption capacities increased by 93.0% compared to commercial resin H-103 and the superiority in adsorption is applicable to other dyes with diverse characteristics. Detailed investigation on chemical-physical adsorption interaction based on N 2 adsorption-desorption study revealed the significance of associating chemical modification with structure optimization. The former provided hydrogen bonding and electrostatic interacting sites and the latter regulated porous structure and BET surface area. The adsorption kinetics and thermodynamics were also studied to gain further understanding for the adsorption behaviors. Graphic abstract Three types of resins prepared by crosslinking/amination modification based on CMPS displayed enhanced adsorption capacity towards BA and multiple physical and chemical interacting modes were involved in the process. Image, graphical abstract. [ABSTRACT FROM AUTHOR]

A series of novel L-malic acid modified hyper-cross-linked resins were synthesized from macroporous chloromethylated styrene-divinylbenzene copolymer by Fridel–Crafts reaction and esterification reaction. The adsorption behavior of the resin toward p-aminobenzoic acid was investigated from aqueous solution. KZ-3 displayed the most outstanding adsorption capacity due to its proper surface structure and higher functional group utilization rate. Subsequently, the adsorption kinetic of p-aminobenzoic acid onto precursor resin Z-3, modified resin KZ-3 and commercially available polymeric adsorbent H-103 was compared. The result demonstrated that KZ-3 had the optimal adsorption capacity because of its hydrogen bonding driving force and hydrophilicity enhancement which brought by oxygen-containing functional groups. Especially, KZ-3 is 3 times higher than the precursor resin in terms of adsorption rate. Kinetic curves could be characterized by pseudo-second-order rate equation and both the intra-particle diffusion and the film diffusion were the rate-limiting steps. The isotherms could be fitted by Langmuir model and the adsorption was an exothermic, spontaneous and more ordered arrangement process due to its negative thermodynamic parameters. [ABSTRACT FROM AUTHOR]