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274 results on '"Ro T"'

1. Quenching of gamma0 transition results from p-wave neutron inducing doorway mechanism

Author

Wang, T. F., Yang, X. T., Katabuchi, T., Li, Z. M., Zhu, L. H., Lee, M. W., Kim, G. N., Ro, T. I., Kang, Y. R., and Igashira, M.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Gamma-strength function essentially distinguishes the reaction mechanisms of charged particle inelastic and neutron capture reactions, reflecting from the ratios of transition of neutron capture to low-lying states. The extraordinary quenching of gamma_0 transition of p-wave neutron resonance reaction in 3s-region nucleus 57Fe is observed, for the first time, due to the non-forming 2p-1h doorway state activation which raises the strong intensities of gamma_1 and gamma_2. The enhancement of low energy gamma-strength function doesn't emerge in the neutron capture reaction resulting from the population of cascade transitions of low-lying states rather than primary transitions. The astrophysical reaction rates that are extracted from total and partial neutron capture cross sections of 57Fe might be adopted to constrain the abundance of the successive heavier isotopes in s-process., Comment: 6 pages, 6 figures

Published
2019

2. Supramolecular nanosubstrate-mediated delivery for reprogramming and transdifferentiation of mammalian cells

Author

Hou, S, Choi, JS, Chen, KJ, Zhang, Y, Peng, J, Garcia, MA, Yu, JH, Thakore-Shah, K, Ro, T, Chen, JF, Peyda, P, Fan, G, Pyle, AD, Wang, H, and Tseng, HR

Subjects
Nanoscience & Nanotechnology
Abstract

Supramolecular nanosubstrate-mediated delivery (SNSMD) leverages the power of molecular self-assembly and a nanostructured substrate platform for the low toxicity, highly efficient co-delivery of biological factors encapsulated in a nanovector. Human fibroblasts are successfully reprogrammed into induced pluripotent stems and transdifferentiated into induced neuronal-like cells.

Published
2015

12. Erratum to: Neutron capture measurements and resonance parameters of dysprosium

Author

Shin, S. G., primary, Kye, Y. U., additional, Namkung, W., additional, Cho, M. H., additional, Kang, Y. -R., additional, Lee, M. W., additional, Kim, G. N., additional, Ro, T. -I., additional, Danon, Y., additional, Williams, D., additional, Leinweber, G., additional, Block, R. C., additional, Barry, D. P., additional, and Rapp, M. J., additional

Published
2017
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13. Neutron capture measurements and resonance parameters of dysprosium

Author

Shin, S. G., primary, Kye, Y. U., additional, Namkung, W., additional, Cho, M. H., additional, Kang, Y. -R., additional, Lee, M. W., additional, Kim, G. N., additional, Ro, T. -I., additional, Danon, Y., additional, Williams, D., additional, Leinweber, G., additional, Block, R. C., additional, Barry, D. P., additional, and Rapp, M. J., additional

Published
2017
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14. Transcranial Magnetic Stimulation: Disrupting Neural Activity to Alter and Assess Brain Function

Author

Bolognini, N, Ro, T, BOLOGNINI, NADIA, Ro, T., Bolognini, N, Ro, T, BOLOGNINI, NADIA, and Ro, T.

Abstract

This article is intended to describe and evaluate the technique of Transcranial Magnetic Stimulation (TMS), which is rapidly becoming an essential tool available to neuroscientists for assessing brain function and to clinicians for treating brain dysfunctions (e.g., stroke and depression). By using TMS to determine whether a brain area is causing some function, it nicely complements the limitations associated with correlation techniques, such as ERPs and fMRI, while also being able to provide several new insights into the operations of the brain. Here, we describe the basic principles of TMS functioning, and we discuss how to use this technique to assess and alter brain functioning.

Published
2010

22. Object-based facilitation and inhibition from visual orienting in the human split-brain

Author

Steven Paul Tipper, Reuter-Lorenz, P. A., Rafal, R., Starrveldt, Y., Ro, T., Egly, R., Danzinger, S., and Weaver, B.

Subjects
Adult, Cerebral Cortex, Male, Epilepsy, Motion Perception, Experimental and Cognitive Psychology, Neural Inhibition, Corpus Callosum, Behavioral Neuroscience, Postoperative Complications, Arts and Humanities (miscellaneous), Pattern Recognition, Visual, Reference Values, Orientation, Psychophysics, Reaction Time, Humans, Attention, Female, Dominance, Cerebral
Abstract

Object-based attention was examined in 2 split-brain patients. A precued object could move within a visual field or cross the midline to the opposite field. Normal individuals show an inhibition in detecting signals in the cued object whether it moves within or between fields. Both patients showed this effect when the cued object moved within a visual field. When it crossed the midline into the opposite visual field, however, detection was faster in the cued box. These results reveal both facilitatory and inhibitory effects on attention that are object based and may last for several hundred milliseconds. However, the inhibition requires an intact corpus callosum for interhemispheric transfer, whereas the facilitation is transferred subcortically.

Published
1997

37. A left visual-field advantage in perception of gaze direction

Author

Ricciardelli, P, Ro, T, Driver, J, RICCIARDELLI, PAOLA, Driver, J., Ricciardelli, P, Ro, T, Driver, J, RICCIARDELLI, PAOLA, and Driver, J.

Abstract

Previous work has found a left visual field (LVF) advantage for various judgements on faces, including identity and emotional expression. This has been related to possible right-hemisphere specialisation for face processing, and it has been proposed that this might reflect configural processing. We sought to determine whether a similar LVF advantage may also exist for gaze perception. In two experiments, normal adult subjects made judgements for seen gaze direction (left, right or straight). To assess how visual field may influence perception of gaze direction, eye stimuli were briefly presented unilaterally or bilaterally. In the latter case, the gaze direction of the two seen eyes could be congruent or incongruent (i.e. the two eyes could gaze in the same or different directions). For unilateral displays, performance was more accurate for LVF stimuli than RVF. With bilateral incongruent gaze, the LVF eye influenced judgements more strongly than the RVF eye. No such LVF advantage was found in a control experiment, in which subjects judged pupil size for similar eye stimuli. Taken together, these results reveal a LVF advantage for perception of gaze direction. Since only the eye region was visible, our results cannot be due to a LVF bias in processing the entire face context. Instead they suggest lateralisation specifically in processing the direction of seen gaze

Published
2002

48. Landscape Ecology for Biodiversity.

Author

Sun-Kee Hong, Nakagoshi, Nobukazu, Bojie Fu, Morimoto, Yukihiro, Ro, T. H., and Hong, S.-K.

Abstract

Biological diversity has been emerged as a core concept in management and conservation of diverse ecological systems. Scaling up for biodiversity conservation in landscape system is also emerging issue in ecologists. In order to conserve biodiversity from the genetic level to ecosystem and landscape levels, multi-scale strategies and efforts are being adopted and executed in many countries. In this paper, comprehensive and necessary considerations arisen from the view of landscape ecology were discussed for the present situations of wildlife conservation and management in Korea compared with other countries. Especially, the conservation strategy and policy of biodiversity were addressed in broad senses including habitat protections, legal approaches, landscape design and ecological network programs. [ABSTRACT FROM AUTHOR]

Published
2007
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49. Measurements of Neutron Capture Cross Sections for Gd Isotopes in the Energy Region from 10 keV to 90 keV.

Author

Kim, G. N., Chung, W. C., Ro, T. I., Ohsaki, T., and Igashira, M.

Subjects
NEUTRONS, NEUTRON sources, ISOTOPES, NUCLEAR physics, PROTON beams
Abstract

The neutron capture cross sections of Gd isotopes (155Gd, 156Gd, 157Gd, and 158Gd) have been measured in the neutron energy range from 10 to 90 keV using the 3-MV Pelletron accelerator of the Research Laboratory for Nuclear Reactors at the Tokyo Institute of Technology. Pulsed keV neutrons were produced from the 7Li(p,n)7Be reaction by bombarding the lithium target with the 1.5-ns bunched proton beam from the Pelletron accelerator. The incident neutron spectrum on a capture sample was measured by means of a TOF method with a 6Li-glass detector. Capture γ-rays were detected with a large anti-Compton NaI(Tl) spectrometer, employing a TOF method. A pulse-height weighting technique was applied to observed capture γ-ray pulse-height spectra to derive capture yields. The capture cross sections were obtained by using the standard capture cross sections of 197Au. The present results were compared with the previous measurements and the evaluated values of ENDF/B-VI. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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