On the basis of these experiences, we began performing repeat SPK in prior SPK recipients (n = 9). Methods: This retrospective review summarizes our experience with repeat SPK transplantation in prior SPK recipients. Mean age at retransplant was 39 yr; mean interval to retransplant was 7.8 yr. Thirty-three percent were
pre-dialysis. Eighty-nine percent of patients underwent transplant nephrectomy (five during the repeat SPK and Torin 2 three prior to it), and 78% underwent transplant pancreatectomy (four during the repeat SPK and three prior to it). Enteric drainage was performed in all repeat SPKs. Results: Median length of stay was 11 d. Perioperative complications included the following: renal artery thrombosis (1), pancreatic portal venous thrombosis (1), enteric leak (1), and hematoma (2). Overall pancreatic allograft survival was 78% at one yr and 67% at two yr. Overall
renal allograft survival was 89% at one yr and 78% at RG-7388 in vitro two yr. Patient survival at one and three yr was 100%. Conclusions: Survival of repeat SPK allografts is acceptable despite the increased technical and immunologic demands of retransplantation. Graftectomy prior to or at the time of retransplantation is often necessary.”
“Inorganic semiconductor nanoparticles, such as CdSe quantum dots, are considered to be a promising alternative to fullerene derivates for application as electron acceptors in polymer-based bulk heterojunction solar cells. The main potential advantage is the strong light absorption of CdSe nanoparticles with a spectral bandwidth, which can even be tuned, due to the quantum size effect. However, the impact of the particle size on the performance of polymer/CdSe solar cells has remained largely unexplored so far. Therefore, the influence of particle size in hybrid solar cells using a blend of poly(3-hexylthiophene) (P3HT) and quasi-spherical
CdSe nanoparticles on relevant cell parameters and the overall solar cell performance is systematically studied in the present work. As the most important result, an increase of the open-circuit voltage (V(OC)) can be found for smaller nanoparticles and can be explained by GSK923295 an “”effective bandgap”" model. In contrast, no significant changes of the short-circuit current density with particle size are observed. Smaller particles were found to yield a lower fill factor, compensating the gain in V(OC), so that the power conversion efficiency finally turned out to be independent of the particle size in this study. Spectral differences observed in the respective external quantum efficiency spectra of the solar cells can be attributed to size-dependent changes of the particle absorption.