One of the effective approaches to develop new anticancer drugs is to prepare polymeranticancer drug conjugates. The polymer-anticancer drug conjugates include polymerprotein conjugates, polymer-drug conjugates and supramolecular drug-delivery systems. In 1975, the concept of a polymer-drug conjugate was first proposed by Ringsdorf (Ringsdorf, 1975). In his model, a bioactive anticancer agent w...

Poisoning tolerance of Pt-based catalyst is an important parameter for the designing direct electrochemical fuel cells (EFCs) based on electrooxidation alcohols (i.e. methanol, ethanol). Applicability ethanol EFCs still challenging taking into account lack effective electrocatalysts which are able to produce high faradic current densities and stability towards strong adsorption C1 C2 oxidation ...

We present a method for the electrospinning of conducting polymeric composite nanofibers using a poly(dimethyl siloxane) (PDMS)-based microfluidic device. To scale-up the process and spin multicomponent systems, we designed a unique multi-spinnerette electrospinning device using microchannels cast in PDMS. Nanofibers of poly (vinylpyrrolidone) and its composite with polypyrrole were successfull...

in this paper, the morphology, roughness and nano structural properties of sio2/poly vinyl pyrrolidone  synthesized with sol gel method,  characterized by using scanning electron microscopy, atomic force microscopy and gps132a techniques.the main material taken from oxide silicon with weight percentage of 20, 40, 60, 80 and from poly vinyl pyrrolidone with percentages of 80, 60, 40, 20 is synth...

BACKGROUND Congenital clinical anophthalmia requires fitting an artificial eye, achieving a pleasing aspect of the palpebral apparatus, and stimulating growth of the orbit, as well as of the entire midface. METHODS Out of 25 patients with clinical anophthalmia, 22 were treated according to a new protocol (first described by Wiese et al. in 1999) and followed for up to 6 years. In 10 patients,...

A polyvinylpyrrolidone (PVP)/Ag nanocomposite was prepared by reduction of silver nitrate in ethylene-glycol in the presence of a polymeric protective agent (i.e., poly (N-vinylpyrrolidone)). The size dependent color variation of this nanocolloid is a clear indication of the presence of Ag as nanoparticles in the polymer matrix. The nonlinear optical properties were studied by Z-scan technique ...

We have developed a multi-array side-polished optical-fiber gas sensor for the detection of volatile organic compound (VOC) gases. The side-polished optical-fiber coupled with a polymer planar waveguide (PWG) provides high sensitivity to alterations in refractive index. The PWG was fabricated by coating a solvatochromic dye with poly(vinylpyrrolidone). To confirm the effectiveness of the sensor...