Depicting skin : visual culture in nineteenth-century medicine

Abstract

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Incorporation of Hydrophobic Porous Fillers in PDMS Membranes for Use in Pervaporation

“…For the removal of organics from aqueous solutions, polydimethylsiloxane (PDMS) membranes were found to be very suitable. When using silicalite-filled PDMS, improved separations − were mostly observed. In many cases however, the observed increase in selectivity was accompanied by a decreased flux of the desired organic compound.…”

Silylation To Improve Incorporation of Zeolites in Polyimide Films

“…Gas separation and pervaporation are two relatively new membrane processes, separating gaseous or liquid mixtures, respectively, through a dense membrane. In 1988, zeolite filled PDMS (poly(dimethylsiloxane)) membranes were introduced in these processes for the first time . Even though these membranes performed very well in both pervaporation − and gas separation, , only a few authors have reported the incorporation of zeolites in rubbery polymers other , than PDMS or in glassy polymers. − Using the more rigid glassy polymers, the adhesion at the organic−inorganic interphase 11 constitutes the main difficulty.…”

“…In 1988, zeolite filled PDMS (poly(dimethylsiloxane)) membranes were introduced in these processes for the first time . Even though these membranes performed very well in both pervaporation − and gas separation, , only a few authors have reported the incorporation of zeolites in rubbery polymers other , than PDMS or in glassy polymers. − Using the more rigid glassy polymers, the adhesion at the organic−inorganic interphase 11 constitutes the main difficulty. For zeolite filled polyimides for instance, this bad adhesion leads to voids 10 and low filler loadings …”

An Ode to Kodachrome

“…In particular, black-and-white film offered dermatologists anatomic objectivity paired with ease of print production, which aided the clinical, educational, and research demands of a rapidly growing international specialty. 6 The clinical atlas, Corpus Iconum Morborum Cutaneorum, published in 1938 by Louis Nékám, MD, featured more than 4500 black-and-white photographs sourced from 568 dermatologists from 56 countries; its scale was emblematic of the widespread acceptance and use of black-andwhite film in clinical practice by the 1930s. 7 As a visual teaching aid, pure black-and-white images were also powerfully suited for delineating the patterns and configurations of cutaneous disease.…”