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You searched on: Author: vytautas reipa

Displaying records 11 to 20 of 52 records.
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11. Covalent Attachment of Photoluminescent Silicon Nanoparticles to Streptavidin
Published: 9/11/2007
Authors: Jonghoon Choi, Peter Niarhos, Nam S. Wang, Vytautas Reipa
Abstract: We have covalently attached multiple fluorescent silicon nanocrystals (SNs) to streptavidin molecule. Selective conjugation of SNs to a target protein is accomplished using sequential silicon surface termination chemistry. In the first step, freshly ...

12. Photoassisted tuning of silicon nanocrystal photoluminescence
Published: 2/13/2007
Authors: Jonghoon Choi, Nam S. Wang, Vytautas Reipa

13. Photo-Assisted Tuning of Si Nano-Crystal Photoluminescence
Published: 2/2/2007
Authors: Jonghoon Choi, Nam S. Wang, Vytautas Reipa
Abstract: Silicon is rather inefficient light emitter due to the indirect-band gap electronic structure, requiring a phonon to balance electron momentum during interband transition. Fortunately, momentum requirements are relaxed in 1-5 nm dia Si crystals as a ...

14. Conformational analysis of the telomerase RNA pseudoknot hairpin by Raman spectroscopy
Published: 1/1/2007
Authors: Vytautas Reipa, G. Niaura, Donald H Atha

15. Long-Term Monitoring of Biofilm Growth and Disinfection Using a Quartz Crystal Microbalance and Reflectance Measurements
Published: 9/1/2006
Authors: Vytautas Reipa, Jamie L Almeida, Kenneth D Cole
Abstract: An biofilm reactor was constructed that allows for real-time monitoring of the growth and removal of biofilms by monitoring the response of a quartz crystal mircrobalance (QCM) and a novel method of measuring the reflectance of light off the surface ...

16. Structural Analysis of the Telomerase RNA Pseudoknot Domain by Raman Spectroscopy
Published: 3/1/2006
Authors: Donald H Atha, G Niaura, Vytautas Reipa
Abstract: We have measured the Raman band intensities and frequencies of two 30-mer ribonucleotides that represent the wild type (WT) and dyskeratosis mutant GC (107-108) AG structures of the pseudoknot hairpin region of human telomerase RNA. We have used the ...

17. Direct spectroeletrochemical titration of glutathione.
Published: 7/1/2005
Author: Vytautas Reipa

18. Infrared and Raman Spectroscopy Characterization of Biological Products
Published: 1/1/2005
Author: Vytautas Reipa
Abstract: Both infrared and Raman are increasingly applied in biomolecular structure characterization, thus getting acceptance alongside traditional bioanalytical techniques. Physical principles and biological sampling requirements are reviewed. Advanced appli ...

19. Direct Spectroelectrochemical Titration of Glutathione
Published: 12/1/2004
Author: Vytautas Reipa
Abstract: Spectroelectrochemistry measurements are used to determine the formal potential E of glutathione. Nernst titration was performed by monitoring disulfide absorption at 258 nm in a thin layer cell. Use of nanocrystalline highly doped tin oxide elect ...

20. Substrate binding and the presence of ferredoxin affect the redox properties of the soluble plant Delta(9)-18:0-acyl carrier protein desaturase
Published: 9/23/2004
Authors: Vytautas Reipa, J Shanklin, V L. Vilker

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