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Author: vytautas reipa

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11. 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 ...

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

13. 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 ...

14. 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 ...

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

16. 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 ...

17. 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 ...

18. 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

19. Structural Changes that Accompany the Temperature Dependence of the Formal Potential of Putidaredoxin
Published: 6/1/2004
Authors: Vytautas Reipa, Marcia J Holden, M P. Mayhew, V L. Vilker

20. Temperature-Induced Structural Changes in Putidaredoxin: A Circular Dichroism and UV-VIS Absorption Study
Published: 6/1/2004
Authors: Vytautas Reipa, Marcia J Holden, M P. Mayhew, V L. Vilker
Abstract: Putidaredoxin (Pdx) is an 11,400 Da iron-sulfur protein that sequentially transfers two electrons to the cytochrome P450cam during the enzymatic cycle of the stereo specific camphor hydroxylation. We report two transitions in the Pdx UV-VIS absorpt ...

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