We present a microfluidic synthesizer made entirely of Teflon material for solid phase peptide synthesis (SPPS). Solvent-resistant perfluoroalkoxy (PFA) was used to construct chip-sized devices featuring multiple tri-layer pneumatic microvalves. Using these devices, model peptides were automatically synthesized and cleaved in situ in a continuous-flow manner. The total coupling and cleavage tim...

A novel technique for low-temperature bonding of GaAs wafers using an interboundary Teflon film is developed. A fabricated stack of ten 25x25 mm2 diced wafers demonstrated 75% transmission of a 10 microm CO2 laser beam. Modeling of these Teflon-bonded (TB) structures as sequences of Fabry-Perot etalons gives a good agreement with transmission measurements. A 20x20 mm2 quasi-phase matched struct...

A 50-year-old female presented with complaints of progressive ataxia. Investigations showed a large intradural arachnoid cyst located anterior to the brainstem. Following marsupialization of the cyst she improved remarkably in her symptoms. The symptoms recurred nine months later and investigations revealed recurrence of the cyst. The cyst was evacuated again and two Teflon sponge sheets were p...

Experimental work at the LR-0 reactor was carried out to determine possibility of mock-up neutron field creation for fluoride salt-based reactors. Previous calculations and experiments have shown that fast part molten salt (MSR) spectrum is shaped by fluorine even Teflon material suitable neutronics in energy range. Properly selected indices can describe MSR thermal intermediate parts spectrum....

Proteoglycans are a family of structurally distinct, polyanionic complex carbohydrates composed of repeating disaccharide units. Proteoglycans include heparin, heparan sulphate, chondroitin 4-sulphate, chondroitin 6-sulphate, dermatan sulphate, and hyaluronic acid. Heparin is found in the granules of a subset of mast cells where it is bound to various mediators including histamine. Heparan sulp...

A method is described for the culture of mononuclear phagocytes in suspension by incubation on a Teflon film to which the cells do not adhere. The characteristics of peritoneal macrophages, bone marrow mononuclear phagocytes, macrophage cell lines, and fibroblasts cultured in this way are similar to those observed after culture on glass or plastic surfaces. Culture of mononuclear phagocytes in ...

Infection of the Teflon pledgets on the heart suture line after left ventricular aneurysm repair, presenting late with a fistulous tract connecting the heart with the skin (cardiocutaneous fistula) is an uncommon but potentially serious condition. The case is reported of a 73 year old man who developed a cardiocutaneous fistula extending through the left hemidiaphragm and draining at the abdomi...