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3 results on '"P Collon"'

1. Adrenergic lipolysis in guinea pig is not a beta 3-adrenergic response: comparison with human adipocytes

Author

P Collon, J. Moratinos, Max Lafontan, Jean Galitzky, I. Castan, and Christian Carpéné

Subjects
Male, Aging, medicine.medical_specialty, Physiology, Procaterol, Lipolysis, Guinea Pigs, Adipose tissue, Adrenergic, Biology, Guinea pig, chemistry.chemical_compound, Adipose Tissue, Brown, Physiology (medical), Adipocyte, Internal medicine, Receptors, Adrenergic, beta, Brown adipose tissue, Adipocytes, medicine, Animals, Humans, Beta (finance), Sex Characteristics, Adrenergic beta-Agonists, Receptors, Adrenergic, alpha, Receptors, Adrenergic, Endocrinology, medicine.anatomical_structure, Adipose Tissue, Animals, Newborn, chemistry, Female, medicine.drug
Abstract

beta 3-Adrenoceptor agonists are potent lipolytic activators in rats, but they are only weak stimulators in human adipocytes, indicating interspecies differences in the adrenergic regulation of lipid mobilization. Like human but not rat adipocytes, guinea pig fat cells were poorly responsive to the beta 3-agonists BRL-37344, CGP-12177, SR-58611, and ICI-215001, acid metabolite of ICI-D7114. In guinea pigs, the beta 1-agonist dobutamine was more lipolytic than the beta 2-agonist procaterol. Anatomic location of fat deposits was without major influence on the beta-adrenergic responsiveness. Weak responses to beta 3-agonists were found whatever the sex or the age (from 2 days to 16 mo) of the animals. Even in the interscapular brown adipose tissue, which is well known in rats for its beta 3-adrenergic responsiveness, a blunted response to BRL-37344 was observed. The alpha 2-adrenergic antilipolytic effect and receptor number were smaller in guinea pig than in human adipocytes, but the beta-adrenergic receptor number was similar in the two species. Thus guinea pig adipocytes resemble human fat cells when their weak beta 3-adrenergic responsiveness is considered.

Published
1994
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2. Heavy-Ion Fusion Hindrance at Extreme Sub-barrier Energies

Author

X. D. Tang, J. Greene, R. C. Pardo, D. J. Henderson, Ş. Mişicu, R. V. F. Janssens, C. L. Jiang, X. Wang, S. Zhu, B. Shumard, L. Jisonna, M. Paul, H. Esbensen, M. Notani, D. Peterson, D. Seweryniak, K. E. Rehm, P. Collon, B. B. Back, C. J. Lister, C. N. Davids, and S. Kurtz

Subjects
Nuclear physics, Nickel, Fusion, Silicon, Chemistry, Q value, Nuclear structure, chemistry.chemical_element, Heavy ion, Atomic physics
Abstract

There are many new results in the study of the heavy‐ion fusion hindrance phenomenon at extreme sub‐barrier energies since Fusion03. Some of them have been published. Presented are some new results, including the first evidence in fusion hindrance for a system with small negative Q‐value, 28Si + 64Ni, and the impact of fusion hindrance on reactions of interest to astrophysics.

Published
2006
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3. Discovery of underground argon with low level of radioactive 39Ar and possible applications to WIMP dark matter detectors

Author

D. Marks, M. Roncadelli, K. McCarty, L. Basgall, C. Vignoli, Alfredo G. Cocco, L. Grandi, A. P. Burgers, D. Cheng, F. Di Pompeo, G. Meng, Alexey Yushkov, M. Antonello, N. Canci, F. Fitch, F. Resnati, T. Hohman, Brendan Lyons, F. Carbonara, Matthias Laubenstein, Richard Vondrasek, R. Saldanha, R. Acciarri, C. J. Ballentine, Daniel Robertson, Tiberiu Tesileanu, A. Shirley, J. Ruderman, S. Gazzana, A. Rappoldi, Frank Calaprice, R Highfill, R. Bansal, M. Cambiaghi, C. Rubbia, A. LaCava, A. Pocar, F. Pietropaolo, E. Calligarich, D. Acosta-Kane, Sandro Ventura, A. O. Bazarko, Michael K.H. Leung, G. Fiorillo, A. M. Szelc, P. Benetti, T. Pivonka, F. Cavanna, Luciano Pandola, C. Schmitt, Jay Burton Benziger, R. Tartaglia, Roland Purtschert, O Amaize, M. Gaull, S. Centro, Al. Ianni, F. Dalnoki-Veress, M. Baldo Ceolin, E. de Haas, B. Loer, An. Ianni, Philippe Collon, H.H. Loosli, Robert G. Scott, A. E. Chavarria, Massimo Rossella, A. M. Goretti, V. Gallo, C. Montanari, Cristiano Galbiati, M. Cassidy, B. Baibussinov, T Highfill, O. Palamara, Hye Young Lee, E. Segreto, C. Visnjic, G.L. Raselli, Sujoy Mukhopadhyay, A. Nelson, C., Galbiati, D., Acosta Kane, R., Acciarri, O., Amaize, M., Antonello, B., Baibussinov, M. B., Ceolin, C. J., Ballentine, R., Bansal, L., Basgall, A., Bazarko, P., Benetti, J., Benziger, A., Burger, F., Calaprice, E., Calligarich, M., Cambiaghi, N., Canci, F., Carbonara, M., Cassidy, F., Cavanna, S., Centro, A., Chavarria, D., Cheng, A. G., Cocco, P., Collon, F., Dalnoki Vere, E. d., Haasi, F. D., Pompeo, Fiorillo, Giuliana, F., Fitch, V., Gallo, M., Gaull, S., Gazzana, L., Grandi, A., Gorettil, R., Highfill, T., Highfill, T., Hohman, A., Ianni, A., Lacava, M., Laubenstein, H. Y., Lee, M., Leung, B., Loer, H. H., Loosli, B., Lyon, D., Mark, K., Mccarty, G., Meng, C., Montanari, S., Mukhopadhyay, A., Nelson, O., Palamara, L., Pandola, F., Pietropaolo, T., Pivonka, A., Pocar, R., Purtschert, A., Rappoldi, G., Raselli, F., Resnati, D., Robertson, M., Roncadelli, M., Rossella, C., Rubbia, J., Ruderman, R., Saldanha, C., Schmitt, R., Scott, E., Segreto, A., Shirley, A. M., Szelc, R., Tartaglia, T., Tesileanu, S., Ventura, C., Vignoli, C., Visnjic, R., Vondrasek, A., Yushkov, E. d., Haa, and A., Goretti

Subjects
History, Nuclear and High Energy Physics, ADSORPTION, Physics::Instrumentation and Detectors, Dark matter, FOS: Physical sciences, chemistry.chemical_element, Astrophysics, WIMP Argon Programme, 01 natural sciences, Education, Nuclear physics, WIMP, Natural gas, LIQUID ARGON, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Physics::Chemical Physics, 010306 general physics, Instrumentation, Helium, Physics, Argon, 010308 nuclear & particles physics, business.industry, Astrophysics (astro-ph), Detector, Isotopes of argon, Computer Science Applications, NITROGEN, chemistry, 13. Climate action, business
Abstract

We report on the first measurement of 39Ar in argon from underground natural gas reservoirs. The gas stored in the US National Helium Reserve was found to contain a low level of 39Ar. The ratio of 39Ar to stable argon was found to be, 6 pages, 2 figures, 2 tables

Published
2008
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