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You searched on: Author: vytautas reipa

Displaying records 11 to 20 of 52 records.
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11. Porous Silicon Biosensor for MS2 Virus
Published: 11/19/2007
Authors: Andrea Rossi, Lili Wang, Vytautas Reipa, Thomas E. Murphy
Abstract: Nanoporous silicon was discovered in the 1950 s and has unique properties due to quantum confinement effects. It is produced by electrochemical etching in HF containing electrolytes that allows to tune the pore diameter from a few nanometers up to s ...

12. Association and Redox Properties of the Putidaredoxin Reductase - Oxidized Nicotinamide Adenine Dinucleotide Complex
Published: 11/13/2007
Authors: Vytautas Reipa, Marcia J Holden, V L. Vilker
Abstract: Putidaredoxin reductase (PdR) is the flavin protein that carries out the first electron transfer involved in the cytochrome P450cam catalytic cycle. In PdR, the oxidized flavin adenine dinucleotide (FAD/FADH2) redox center is reduced by two-electron ...

13. 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 ...

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

15. 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 ...

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

17. 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 ...

18. 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 ...

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

20. 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 ...

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