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Author: vytautas reipa

Displaying records 11 to 20 of 50 records.
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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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830535

12. Conformational analysis of the telomerase RNA pseudoknot hairpin by Raman spectroscopy
Published: 1/1/2007
Authors: Vytautas Reipa, G. Niaura, Donald H Atha
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908183

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830501

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830502

15. Direct spectroeletrochemical titration of glutathione.
Published: 7/1/2005
Author: Vytautas Reipa
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903190

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830440

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830439

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
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903192

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
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903189

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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830425



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