The CHF(3) dissociation produced the F-related radicals, including the CHF(2), CF(3), and F radicals. The recombination of active radicals produced the HF, C(2)H(2), C(2)H(3), C(2)H(4), C(2)H(5), C(2), H(2), SiH(2), SiF(3), SiF(2), and SiF radicals. The Si-related and CH-related radicals led to the deposition of SiCOH films; however, the F-related radicals led not only to the deposition of F-SiCOH films

but also to the etching of SiCOH films by the reactions between F and Si atoms in the plasma and at the surface of as-deposited films simultaneously. The competition between film deposition and etching Doramapimod led to an n-type dependence of the deposition rate on CHF(3)/DMCPS flow rate ratio, the drastic composition change, and the structural evolution from SiCOH to

Si-doping COF and further to COF films.”
“Polyurethane catheters were irradiated with electron-beam. We looked at the way the catheter is physically and chemically modified after incubation in differ ferent media. An extracting medium (methanol) was compared to other oxidative, enzymatic, and saline aqueous media, mimicking some aspects of biological fluids. Irradiation had a strong impact on the stability of polymer during incubation. For nonirradiated samples incubated in aqueous media, only a small diffusion of additives was observed; no oligomer release was put into evidence, and the polymer SIS3 was almost not degraded. Put the chain branching that occurred because of irradiation created some weaknesses in the polymer chains: irradiated samples were mostly sensitive to chain scission and oligomers released during incubation; this trend increased with the irradiation dose. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 3113-3120, 2009″
“Photoacoustic (PA) can distinguish oxygenated main chromophores

which are hemoglobin (HbO(2)) and deoxygenated hemoglobin (Hb) in blood by the optical absorption at multiple optical wavelengths. In this study, a noninvasive PA system Tipifarnib purchase with a double-ring sensor was used for fixed-point measurement of hemoglobin oxygen saturation (SO(2)) continually. The double-ring sensor is an ultrasonic Fresnel zone plate ultrasonic transducer. It has two-zone negative zone plate piezoelectric material pattern with good focusing effect for fixed-point detection of SO(2). Three specific optical absorbed wavelengths (760, 805, and 850 nm) of HbO(2) and Hb were employed sequentially to obtain PA signals and calculate the SO(2) at each blood oxygen level. The capability and accuracy of the system were tested by phantom samples and in vitro blood samples, and the results of the PA detection were in excellent agreement with the data of the control group by the blood-gas analyzer. In in vivo studies, the SO(2) of the artery and the vein in a rabbit ear were noninvasively detected.