Substantial distortions in the height of the atoms adjacent to the interface were found for the biwires but not for the Ge disks. Strains as high as 3.5% were found for the Ge disk and values of 2%-2.5% were found at the Si
and Cell Cycle inhibitor Ge interfacial layers in the biwires. Deformation potential theory was used to estimate the influence of the strains on the band gap, and reductions in band gap to as small as 40% of bulk values are predicted for the Ge disks. The localized regions of increased strain and resulting energy minima were also found within the Si/Ge biwire interfaces with the larger effects on the Ge side of the interface. The regions of strain maxima near and within the interfaces are anticipated to be useful
for tailoring band gaps and producing quantum confinement of carriers. These results suggest that nanowire heterostructures provide greater design flexibility in band structure modification than is possible with planar layer growth.”
“BACKGROUND: Chemical methods used to control biofilm formation in filtration systems are not always effective. Two commercially available proteases and an amylase were immobilized onto polymer nanofibers that are used in the production of filtration membranes. RESULTS: The enzymes were immobilized onto poly acrylonitrile nanofibers that were chemically activated by imidoesterification to allow the covalent immobilization of enzymes. The immobilized enzymes retained above
80% of the specific activity of the MS-275 mouse free enzymes. For each of the immobilized enzymes, selleck just below 30% of initial activity was retained after 10 repeated cycles of use. No biofilm formation was observed on nanofibers that were coated with the enzymes, where biofilms formed on non-coated nanofibers. CONCLUSION: When considering the combined advantages of this effective immobilization process, the robustness of the enzymes used in this study, and the results of this study indicating activity against biofilms, a valuable addition has been made to filtration membrane technology. (c) 2012 Society of Chemical Industry”
“Objective-To evaluate factors associated with second remission in dogs with lymphoma retreated with a cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) protocol after relapse following initial treatment with a first-line 6-month CHOP protocol.
Design-Retrospective case series.
Animals-95 dogs with lymphoma.
Procedures-Medical records were reviewed. Remission duration was estimated by use of the Kaplan-Meier method. Factors potentially associated with prognosis were examined.
Results-Median remission duration after the first-line CHOP protocol was 289 days (range, 150 to 1,457 days). Overall, 78% (95% confidence interval [CI], 69% to 86%) of dogs achieved a complete remission following retreatment, with a median second remission duration of 159 days (95% Cl, 126 to 212 days).