We report the results of light scattering, absorption, excitation, and emission spectroscopy of three polyphenylene vinylene (PPV) derivatives; poly[Zmethoxy, 5-(2’-ethyl-hexyloxy-p-phenylenevinylene] (MEH-PPV), poly[Zbutoxy, 5-(2’-ethyl-hexyloxy-p-phenylene-vinylene] (BEH-PPV), and poly[2-dicholestanoxy-p-phenylene-vinylene] (BCHA-PPV) in solution with p-xylene. We find that increasing the siz...

OBJECTIVE To compare 20-gauge standard pars plana vitrectomy (PPV) with transconjunctival cannulated PPV in the development of intraoperative retinal breaks and postoperative rhegmatogenous retinal detachments (RRDs) in a large series of patients undergoing PPV for macular pucker or macular hole. METHODS This study was conducted at an academic tertiary care vitreoretinal practice in Milwaukee...

BACKGROUND This study was designed to measure changes in anterior chamber depth (ACD), central cornea thickness (CCT), and axial length (AL) after scleral buckle (SB) surgery or pars plana vitrectomy (PPV) for the repair of rhegmatogenous retinal detachment (RD). METHODS We prospectively reviewed the records of 245 eyes of 245 patients scheduled to undergo SB surgery and 238 eyes of 238 patie...

BACKGROUND Dislocated lens fragments in the vitreous cavity can cause potentially serious complications. This retrospective study aimed to evaluate the visual outcome of patients who underwent pars plana vitrectomy (PPV) for posteriorly dislocated lens fragments after cataract phacoemulsification. METHODS A retrospective study was conducted on all consecutive cases (60 patients) with pars pla...

This work demonstrates the comparative studies of non-radiative resonance energy transfer in bi-polymer nanoparticles based on fluorescent conjugated polymers. For this purpose, poly[(9,9-dihexylfluorene) (PF) as a donor (D) and poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) as an acceptor (A) have been utilized, from which four different bi-polymer nanoparticle systems ...

Abstract Composites of poly( p -phenylene vinylene) (PPV) and different carbon nanostructures, such as fullerene C 60 , multi-walled nanotubes (MWCNTs), single-walled (SWCNTs), graphene oxide (GO), nanoplatelets (GNPLs), were produced by Wittig’s soluble precursor procedure in solutions containing dispersed particles nanomaterials. These composites investigated using infrared Raman spectroscopy...

For the recently synthesized post-perovskite (PPV) CaPtO3 we investigate the electronic band structure properties in connection with hypothetical perovskite PV–CaPtO3 within density functional theory using pseudopotential and all electron methods. Both systems are found insulating in agreement with a tetravalent Pt(IV) low spin d6 state. The equilibrium values of the volume and energy point to ...

Lactobacillus casei ATCC 393 was selected as an antigen delivery vehicle for 6 mucosal immunization against porcine parvovirus (PPV) infection. A 64kDa fragment of PPV 7 major protective antigen VP2 protein was used as the parvovirus antigen model. A 8 recombinant lactobacilli expressing VP2 protein was constructed with plasmid pPG611.1, 9 where expression and localization of the VP2 protein fr...