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1,154 results on '"Small G."'

161. Immersion Suit Donning in Dynamic Environments: Implications for Design, Construction & Use.

Author

Mallam, S. C., Small, G. R., and MacKinnon, S. N.

Subjects
*ANALYSIS of variance, *MOTION detectors
Abstract

Marine abandonment immersion suits are a vital piece of safety equipment intended to protect individuals from exposure to harsh environmental elements. The operational effectiveness of a well maintained and fitted suit depends on the ability of a user to correctly don a suit system. Thirty-two participants performed immersion suit donning trials in six experimental conditions. Dynamic, pre-abandonment marine emergency scenarios were simulated using a six degrees of freedom motion platform and varying environmental lighting levels. This article details user-suit interaction challenges encountered throughout immersion suit donning tasks and examines their connection to safety and survival in marine emergencies. Analysis of user-suit functionality during the donning process is critical for identifying current deficiencies in order to develop future design solutions, training methodologies and ultimately improve users' practical competencies. [ABSTRACT FROM AUTHOR]

Published
2014
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171. Applications of Spectral Hole-Burning Spectroscopies to the Excited Electronic States and Transport Dynamics of Photosynthetic Units

Author

IOWA STATE UNIV AMES, Small, G. J., IOWA STATE UNIV AMES, and Small, G. J.

Abstract

Hole-burning methodologies suitable for the study of excited electronic state structure, energy and electron transfer dynamics, electron-phonon coupling, and heterogeneity of photosynthetic units are discussed., This article is from 'Organization of the Optical Society of America Photonic Science Topical Meeting Series (1991). Volume 16. Conference Edition: Summaries of papers presented at the Persistent Spectral Hole-Burning: Science and Applications Topical Meeting Held in Monterey, California on 26-28 September 1991', AD-A258 663, p300-303.

Published
1992

172. Marker Mode Structure in the Primary Donor State of Bacterial Reaction Centers

Author

IOWA STATE UNIV AMES DEPT OF CHEMISTRY, Lyle, P., Small, G. J., DiMagno, T. J., Norris, J. R., IOWA STATE UNIV AMES DEPT OF CHEMISTRY, Lyle, P., Small, G. J., DiMagno, T. J., and Norris, J. R.

Abstract

Underlying structure for the primary donor absorption profiles of isolated reaction centers Rhodopseudomonas viridis and Rhodobacter sphaeroides (P960 and P870) has recently been uncovered by transient hole burning experiments. A Franck-Condon progression of an intermolecular special pair marker mode (omega sp) was found to originate in the low energy shoulder of the absorption spectra and peak at the one quantum transition. The theory of Hayes and Small for fitting hole burned spectra was extended to include the coupling of the marker mode. Briefly, the theory defines a single site absorption function as being made up of a sum of 0-,1-,... phonon lineshape functions composed of a gaussian distribution for the low energy side and a lorentzian for the high energy side. By constructing a gaussian distribution whose full-width at half maximum is equal to the inhomogeneous broadening and convolving with the single site absorption function, the absorption spectrum is obtained. By further convolving these functions with an exponential decay function of the single sites centered at the burn frequency the absorption spectra after burning a time Tau is obtained.

Published
1992

173. Hole Burning of the Exciton Coupled Antenna Complex of Rhodobacter Sphaeroides

Author

IOWA STATE UNIV AMES, Reddy, N. R., Small, G. J., IOWA STATE UNIV AMES, Reddy, N. R., and Small, G. J.

Abstract

Efficient energy transfer in light harvesting (LH) complexes forms an important part of the photosynthetic process that results in the conversion of light energy into chemical free energy. A number of factors are important for understanding the process that directs the optical excitation to the reaction center. Included are the nature of relevant excited states of chlorophylls (e.g. localised or delocalised), bath induced mechanisms for homogeneous broadening of transitions etc. The Q sub y-absorption (S sub 1) of chlorophyllic molecules in protein complexes appears as inhomogeneously broadened bands with Gamma sub I approx. 50 - 200/cm at liquid helium temperatures., This article is from 'Organization of the Optical Society of America Photonic Science Topical Meeting Series (1991). Volume 16. Conference Edition: Summaries of papers presented at the Persistent Spectral Hole-Burning: Science and Applications Topical Meeting Held in Monterey, California on 26-28 September 1991', AD-A258 663, p125-128.

Published
1992

184. Sulcal variability in the Alzheimer's brain

Author

Mega, M. S., primary, Thompson, P. M., additional, Cummings, J. L., additional, Back, C. L., additional, Xu, M. L., additional, Zohoori, S., additional, Goldkorn, A., additional, Moussai, J., additional, Fairbanks, L., additional, Small, G. W., additional, and Toga, A. W., additional

Published
1998
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190. Evidence for association of HLA-A2 allele with onset age of Alzheimer's disease

Author

Payami, H., primary, Schellenberg, G. D., additional, Zareparsi, S., additional, Kaye, J., additional, Sexton, G. J., additional, Head, M. A., additional, Matsuyama, S. S., additional, Jarvik, L. F., additional, Miller, B., additional, McManus, D. Q., additional, Bird, T. D., additional, Katzman, R., additional, Heston, L., additional, Norman, D., additional, and Small, G. W., additional

Published
1997
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193. D2 Dopamine Receptor A1 Allele in Alzheimer Disease and Aging

Author

Small, G. W., primary, Noble, E. P., additional, Matsuyama, S. S., additional, Jarvik, L. F., additional, Komo, S., additional, Kaplan, A., additional, Ritchie, T., additional, Pritchard, M. L., additional, Saunders, A. M., additional, Conneally, P. M., additional, Roses, A. D., additional, Haines, J. L., additional, and Pericak-Vance, M. A., additional

Published
1997
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