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Your search keyword '"Michelman-Ribeiro, Ariel"' showing total 16 results
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16 results on '"Michelman-Ribeiro, Ariel"'

6. Measurement of Protein Binding Rates in Live Cells with FCS

Author

Michelman-Ribeiro, Ariel, primary, Mazza, Davide, additional, Rosales, Tilman, additional, Stasevich, Timothy J., additional, Boukari, Hacene, additional, Rishi, Vikas, additional, Vinson, Charles, additional, Knutson, Jay R., additional, and McNally, James G., additional

Published
2010
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13. Research Funding and Women in Physics.

Author

Daniels, Karen E., Eblen-Zayas, Melissa, Michelman-Ribeiro, Ariel, and Valentine, Jami M.

Subjects
RESEARCH funding, WOMEN in physics, PHYSICS research
Abstract

A round table discussion on research funding and its relation to women in physics was held during the Second IUPAP International Conference on Women in Physics. Panelists were the director of the Office of Education, Science, and Technology of the Organization of American States; the director of Programs on Women, Science, and Technology for UNESCO; the Minister of Women for Brazil; and a professor of physics from the University of Yamanashi, Japan. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2005
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15. Women in Physics in the U.S.: A Progress Report.

Author

Budil, Kimberly S., Daniels, Karen E., Daniels-Race, Theda, Eblen-Zayas, Melissa, Hartline, Beverly K., Hazeltine, Richard, Hodari, Apriel K., Horton, K. Renee, Ivie, Rachel, Kay, Laura, Martínez-Miranda, Luz J., Michelman-Ribeiro, Ariel, Ong, Maria, Rudati, Juana I., Valentine, Jami, Whitten, Barbara, Williams, Elvira, and Zastavker, Yevgeniya V.

Subjects
WOMEN in physics, PHYSICS, ACADEMIC degrees, MINORITY women
Abstract

Discusses progress made by women in terms of their participation in physics in the United States. Academic degrees in physics; Challenges for women in physics; Appeal to cultivate the talent and ideas of women, minorities, and others who are underrepresented in physics.

Published
2005
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16. Electrolysis induces gradients and domain orientation in agarose gels.

Author

Michelman-Ribeiro A, Nossal R, Morris R, Lange S, Kuo CS, and Bansil R

Subjects
Anisotropy, Hydrogen-Ion Concentration, Light, Polymers chemistry, Protons, Scattering, Radiation, Time Factors, Biophysics methods, Electrolysis methods, Gels chemistry, Sepharose chemistry
Abstract

We have used small-angle light-scattering (SALS), microscopy, and measurements to study structural changes produced in unbuffered agarose gels as ions migrate under applied electric fields (3-20 V/cm). Anisotropic, bowtielike, light-scattering patterns were observed, whose development occurred more quickly at higher fields. The horizontal lobes were more pronounced at higher polymer concentration. Analysis of the SALS data with a simple model of scattering from anisotropic rods in an electric field is consistent with anisotropic rodlike domains on the order of 10-15 microm in length, which align perpendicular to the electric field. The anisotropic domains in the gel reach almost the same level of orientation, regardless of the field strength. Microscope imaging revealed anisotropic domains on the same length scale, also aligned perpendicular to the field. Profiles of pH variation across the gel, measured by video photography, indicate that the anisotropic patterns appear when the H+ and OH- ions, migrating in opposite directions, meet. Calculations of pH profiles using a model based on electrodiffusion reproduce several features of measured pH profiles, including the power-law dependence on the electric field of the time at which the oppositely charged fronts meet. Ions migrating from both ends of the gel produce pH changes that are correlated with macroscopic shrinking and orientation of the gel.

Published
2006
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