Electroformation of cell-sized lipid membrane vesicles (giant vesicles, GVs) from egg yolk phosphatidylcholine under applied electric voltage was examined on a substrate of a polymer mesh placed between two planar indium tin oxide coated glass electrodes. Under appropriate conditions, GVs were formed in good yield on meshes of various polymer materials, namely, hydrophobic poly(propylene), poly...

The extraction and separation of dyes present on textile fibers offers the possibility of enhanced discrimination between forensic trace fiber evidence. An automated liquid sample handling workstation was programmed to deliver varying solvent combinations to acid-dyed nylon samples, and the resulting extracts were analyzed by an ultraviolet/visible microplate reader to evaluate extraction effic...

In order to quantify the effect of temperature on the mechanical properties of pure nylon 6 and its composite with cellulose fibers (containing 25 wt% cellulose fibers), the materials were sampled and tested at three representative temperatures of 256, 296, and 336 K. Flexural and tensile tests were performed and the reductions in mechanical properties were evaluated. The highest reductions wer...

We have conducted experiments to determine whether alterations in cell surface oligosaccharide residues might be related to altered granulocyte function in chronic myeloid leukemia (CML). Peripheral blood neutrophils from patients with Philadelphia chromosome-positive CML. patients with benign leukocytosis. and 1 8 normals were tested for leukoagglutination against concanavalin A (Con-A). peanu...

Adequate surface preparation of composite parts for adhesive bonding by use of peel plies is highly desirable, yet it remains necessary to test each combination of composite resin system, peel ply, and adhesive for successful adhesion. Furthermore, failure in adhesion, as opposed to interlaminar or cohesive failure, is usually unacceptable for any application. The Rapid Adhesion Test (“RAT”) wa...

We have conducted experiments to determine whether alterations in cell surface oligosaccharide residues might be related to altered granulocyte function in chronic myeloid leukemia (CML). Peripheral blood neutrophils from patients with Philadelphia chromosome-positive CML. patients with benign leukocytosis. and 1 8 normals were tested for leukoagglutination against concanavalin A (Con-A). peanu...

Commercially available woven fabrics (e.g., nylon- or PET-based fabrics) possess inherently re-entrant textures in the form of cylindrical yarns and fibers. We analyze the liquid repellency of woven and nanotextured oleophobic fabrics using a nested model with n levels of hierarchy that is constructed from modular units of cylindrical and spherical building blocks. At each level of hierarchy, t...

A fiber-optic enzyme biosensor for the direct measurement of organophosphate nerve agents was developed. The basic element of this biosensor is organophosphorus hydrolase immobilized on a nylon membrane and attached to the common end of a bifurcated optical fiber bundle. The enzyme catalyzes the hydrolysis of organophosphate compounds to form stoichiometric amounts of chromophoric products that...

A novel 3D printing methodology using continuous carbon fiber (CCF) reinforced thermosetting epoxy (EP) composites was proposed to fabricate triangular corrugated structures (TCSs). The single-stroke path ensured a strong connection between the core and face sheets. Silicone rubber deposited vulcanized solve shape retention problem of preformed sample during post-curing. Flatwise compression te...