Michael Seibert

The Complex Subband Decomposition and its Application to the (2001)

James P. Reilly, Matt Wilbur, Michael Seibert, Nima Ahmadv

In this paper, we show that an NPR M-channel filter bank with a diagonal system inserted between the analysis and synthesis filter banks may be used to decompose an FIR system of order L into M...

Resonance Raman and Surface-Enhanced Resonance Raman Spectra of LH2 Antenna Complex from Rhodobacter sphaeroides and Ectothiorhodospira sp. Excited in the Qx and Qy Transitions† (2000)

George Chumanov, Rafael Picorel, Therese M. Cotton, Michael Seibert

Well-resolved vibrational spectra of LH2 complex isolated from two photosynthetic bacteria, Rhodobacter sphaeroides and Ectothiorhodospira sp., were obtained using surface-enhanced resonance Raman...

The Decomposition Of Large Problems Using Single-Sided Subbanding (2000)

James P. Reilly, Michael Seibert, Matt Wilbur

In this paper, we show that an NPR M-channel filter bank with a diagonal system inserted between the analysis and synthesis filterbanks, with appropriately chosen single--sided analysis and synthesis...

Neural Methods for Imagery, GMTI, and Information Fusion (1998)

Rhodes, Brad, Bomberger, Neil, Seibert, Michael, Waxman, Allen

This work addressed the development and application of neural models of multi-sensor, multi-modal data and information fusion at Levels 0, 1, 2, and 2+/3 according to the JDL Data Fusion Group...

Sustained Photobiological Hydrogen Gas Production upon Reversible Inactivation of Oxygen Evolution in the Green Alga Chlamydomonas reinhardtii1

Melis, Anastasios, Zhang, Liping, Forestier, Marc, Ghirardi, Maria L., Seibert, Michael

The work describes a novel approach for sustained photobiological production of H2 gas via the reversible hydrogenase pathway in the green alga Chlamydomonas reinhardtii. This single-organism,...

Functional asymmetry of photosystem II D1 and D2 peripheral chlorophyll mutants of Chlamydomonas reinhardtii

Wang, Jun, Gosztola, David, Ruffle, Stuart V., Hemann, Craig, Seibert, Michael, Wasielewski, Michael R., ...

The peripheral accessory chlorophylls (Chls) of the photosystem II (PSII) reaction center (RC) are coordinated by a pair of symmetry-related histidine residues (D1-H118 and D2-H117). These Chls...

Accumulation of Ferrous Iron in Chlamydomonas reinhardtii. Influence of CO2 and Anaerobic Induction of the Reversible Hydrogenase1

Semin, Boris K., Davletshina, Lira N., Novakova, Alla A., Kiseleva, Tat'yana Y., Lanchinskaya, Victoriya Y., Aleksandrov, Anatolii Y., ...

The green alga, Chlamydomonas reinhardtii, can photoproduce molecular H2 via ferredoxin and the reversible [Fe]hydrogenase enzyme under anaerobic conditions. Recently, a novel approach for sustained...

Determination of the primary charge separation rate in isolated photosystem II reaction centers with 500-fs time resolution

Wasielewski, Michael R., Johnson, Douglas G., Seibert, Michael

We have measured directly the rate of formation of the oxidized chlorophyll a electron donor (P680+) and the reduced electron acceptor pheophytin a- (Pheoa-) following excitation of isolated spinach...

Hydrogen Photoproduction Is Attenuated by Disruption of an Isoamylase Gene in Chlamydomonas reinhardtii

Posewitz, Matthew C., Smolinski, Sharon L., Kanakagiri, Saradadevi, Melis, Anastasios, Seibert, Michael, Ghirardi, Maria L.

DNA insertional transformants of Chlamydomonas reinhardtii were screened chemochromically for attenuated H2 production. One mutant, displaying low H2 gas photoproduction, has a nonfunctional copy of...

The Effects of Light Intensity and Spectral Quality on Growth and Shoot Initiation in Tobacco Callus

Seibert, Michael, Wetherbee, Phyllis J., Job, Donald D.

The effects of eight different narrow band-emitting fluorescent lamps (371-750 nm) and four commercial broad band-emitting fluorescent sources upon growth and shoot initiation in tobacco callus...

Increased Survival and Differentiation of Frozen Herbaceous Plant Organ Cultures through Cold Treatment

Seibert, Michael, Wetherbee, Phyllis J.

Cold treatment of donor carnation plants (Dianthus caryophyllus L.) at 4 C for 3 days or more resulted in a doubling in the percentage of excised, frozen shoot apices which survived freezing and a 6-...

Spectral, Photophysical, and Stability Properties of Isolated Photosystem II Reaction Center 1

Seibert, Michael, Picorel, Rafael, Rubin, Andrew B., Connolly, John S.

Photosystem II reaction center (RC) preparations isolated from spinach (Spinacea oleracea) by the Nanba-Satoh procedure (O Nanba, K Satoh 1987 Proc Natl Acad Sci USA 84: 109-112) are quite labile,...

Stabilization of Isolated Photosystem II Reaction Center Complex in the Dark and in the Light Using Polyethylene Glycol and an Oxygen-Scrubbing System 1

McTavish, Hugh, Picorel, Rafael, Seibert, Michael

The photosystem II reaction center as isolated (O Nanba, K Satoh [1987] Proc Natl Acad Sci USA 84: 109-112) is quite dilute and very unstable. Precipitating the complex with polyethylene glycol and...

Presence in Photosystem II Core Complexes of a 34-Kilodalton Polypeptide Required for Water Photolysis 1

Metz, James G., Seibert, Michael

Photosystem II (PSII) reaction center core complexes have been isolated and characterized from wild type (WT) Scenedesmus obliquus and from its LF-1 mutant. LF-1 thylakoids are blocked on the...

Probing Photosynthesis on a Picosecond Time Scale: Evidence for Photosystem I and Photosystem II Fluorescence in Chloroplasts

Seibert, Michael, Alfano, Robert R.

Fluorescent emission kinetics of isolated spinach chloroplasts have been observed at room temperature with an instrument resolution time of 10 ps using a frequency doubled, mode-locked Nd:glass laser...

Functional Studies of [FeFe] Hydrogenase Maturation in an Escherichia coli Biosynthetic System

King, Paul W., Posewitz, Matthew C., Ghirardi, Maria L., Seibert, Michael

Maturation of [FeFe] hydrogenases requires the biosynthesis and insertion of the catalytic iron-sulfur cluster, the H cluster. Two radical S-adenosylmethionine (SAM) proteins proposed to function in...

Sustained Photobiological Hydrogen Gas Production upon Reversible Inactivation of Oxygen Evolution in the Green Alga Chlamydomonas reinhardtii1

Melis, Anastasios, Zhang, Liping, Forestier, Marc, Ghirardi, Maria L., Seibert, Michael

The work describes a novel approach for sustained photobiological production of H2 gas via the reversible hydrogenase pathway in the green alga Chlamydomonas reinhardtii. This single-organism,...

Functional asymmetry of photosystem II D1 and D2 peripheral chlorophyll mutants of Chlamydomonas reinhardtii

Wang, Jun, Gosztola, David, Ruffle, Stuart V., Hemann, Craig, Seibert, Michael, Wasielewski, Michael R., ...

The peripheral accessory chlorophylls (Chls) of the photosystem II (PSII) reaction center (RC) are coordinated by a pair of symmetry-related histidine residues (D1-H118 and D2-H117). These Chls...

Accumulation of Ferrous Iron in Chlamydomonas reinhardtii. Influence of CO2 and Anaerobic Induction of the Reversible Hydrogenase1

Semin, Boris K., Davletshina, Lira N., Novakova, Alla A., Kiseleva, Tat'yana Y., Lanchinskaya, Victoriya Y., Aleksandrov, Anatolii Y., ...

The green alga, Chlamydomonas reinhardtii, can photoproduce molecular H2 via ferredoxin and the reversible [Fe]hydrogenase enzyme under anaerobic conditions. Recently, a novel approach for sustained...

Determination of the primary charge separation rate in isolated photosystem II reaction centers with 500-fs time resolution

Wasielewski, Michael R., Johnson, Douglas G., Seibert, Michael

We have measured directly the rate of formation of the oxidized chlorophyll a electron donor (P680+) and the reduced electron acceptor pheophytin a- (Pheoa-) following excitation of isolated spinach...

Hydrogen Photoproduction Is Attenuated by Disruption of an Isoamylase Gene in Chlamydomonas reinhardtii

Posewitz, Matthew C., Smolinski, Sharon L., Kanakagiri, Saradadevi, Melis, Anastasios, Seibert, Michael, Ghirardi, Maria L.

DNA insertional transformants of Chlamydomonas reinhardtii were screened chemochromically for attenuated H2 production. One mutant, displaying low H2 gas photoproduction, has a nonfunctional copy of...

The Effects of Light Intensity and Spectral Quality on Growth and Shoot Initiation in Tobacco Callus

Seibert, Michael, Wetherbee, Phyllis J., Job, Donald D.

The effects of eight different narrow band-emitting fluorescent lamps (371-750 nm) and four commercial broad band-emitting fluorescent sources upon growth and shoot initiation in tobacco callus...

Increased Survival and Differentiation of Frozen Herbaceous Plant Organ Cultures through Cold Treatment

Seibert, Michael, Wetherbee, Phyllis J.

Cold treatment of donor carnation plants (Dianthus caryophyllus L.) at 4 C for 3 days or more resulted in a doubling in the percentage of excised, frozen shoot apices which survived freezing and a 6-...

Spectral, Photophysical, and Stability Properties of Isolated Photosystem II Reaction Center 1

Seibert, Michael, Picorel, Rafael, Rubin, Andrew B., Connolly, John S.

Photosystem II reaction center (RC) preparations isolated from spinach (Spinacea oleracea) by the Nanba-Satoh procedure (O Nanba, K Satoh 1987 Proc Natl Acad Sci USA 84: 109-112) are quite labile,...

Stabilization of Isolated Photosystem II Reaction Center Complex in the Dark and in the Light Using Polyethylene Glycol and an Oxygen-Scrubbing System 1

McTavish, Hugh, Picorel, Rafael, Seibert, Michael

The photosystem II reaction center as isolated (O Nanba, K Satoh [1987] Proc Natl Acad Sci USA 84: 109-112) is quite dilute and very unstable. Precipitating the complex with polyethylene glycol and...

Presence in Photosystem II Core Complexes of a 34-Kilodalton Polypeptide Required for Water Photolysis 1

Metz, James G., Seibert, Michael

Photosystem II (PSII) reaction center core complexes have been isolated and characterized from wild type (WT) Scenedesmus obliquus and from its LF-1 mutant. LF-1 thylakoids are blocked on the...

Probing Photosynthesis on a Picosecond Time Scale: Evidence for Photosystem I and Photosystem II Fluorescence in Chloroplasts

Seibert, Michael, Alfano, Robert R.

Fluorescent emission kinetics of isolated spinach chloroplasts have been observed at room temperature with an instrument resolution time of 10 ps using a frequency doubled, mode-locked Nd:glass laser...

Functional Studies of [FeFe] Hydrogenase Maturation in an Escherichia coli Biosynthetic System

King, Paul W., Posewitz, Matthew C., Ghirardi, Maria L., Seibert, Michael

Maturation of [FeFe] hydrogenases requires the biosynthesis and insertion of the catalytic iron-sulfur cluster, the H cluster. Two radical S-adenosylmethionine (SAM) proteins proposed to function in...