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26 results on '"Collin B"'

4. Frailty Predicts Worse Pain Outcomes for Older TN Patients Treated with Microvascular Decompression.

Author

Kilgore, Collin B., Kalluri, Anita L., Nair, Sumil K., Halbert-Elliot, Kyra M., Ejimogu, Emeka, Dong, Bryan, Chakravarti, Sachiv, Abdulrahim, Mostafa W., Jackson, Christopher M., Lim, Michael, Huang, Judy, Bettegowda, Chetan, and Xu, Risheng

Subjects
*NEURALGIA, *FRAILTY, *OROFACIAL pain, *TRIGEMINAL neuralgia, *BODY mass index, *POSTOPERATIVE pain
Abstract

Trigeminal neuralgia (TN) is a debilitating orofacial pain disorder. Recent data from a national database suggest that microvascular decompression (MVD) in frail patients is associated with more postoperative complications. However, the long-term pain outcomes for frail TN patients are not known. We aimed to elucidate the relationship between frailty and long-term pain outcomes after MVD for TN. From 2007 to 2020, 368 TN patients aged ≥60 years underwent MVD at our institution. Patient demographics, clinical characteristics, postoperative complications, and long-term pain outcomes were recorded. Frailty was assessed using the modified 5-item frailty index (mFI-5) score, and the patients were dichotomized into nonfrail (mFI-5 <2) and frail (mFI-5 >1). Differences were assessed via the t test, χ2 test, multivariate ordinal regression, and Cox proportional hazards analysis. Of the 368 patients analyzed, 9.8% were frail. The frail patients were significantly older (P = 0.02) with a higher body mass index (P = 0.01) and a greater incidence of comorbidities (P < 0.001). Frail patients presented with significantly higher pain levels at the final follow-up (P = 0.04). On multivariate analysis, frailty was independently associated with more pain at follow-up (P = 0.01), as was younger age, female sex, and black race. The relationship between frailty and postoperative pain recurrence showed a trend toward significance (P = 0.06), and younger age and black race were significantly associated with recurrence. Frail patients undergoing MVD are at risk of worse long-term pain outcomes. Our results provide clinicians with useful information pertaining to the influence of frailty on the long-term efficacy of MVD in treating TN. [ABSTRACT FROM AUTHOR]

Published
2023
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5. Sex-Specific Pain Outcomes Following Microvascular Decompression for Trigeminal Neuralgia.

Author

Kilgore, Collin B., So, Raymond J., Storm, Kaitlyn, Nair, Sumil K., Ran, Kathleen R., Kalluri, Anita L., Lim, Michael, Huang, Judy, Bettegowda, Chetan, and Xu, Risheng

Subjects
*NEURALGIA, *TRIGEMINAL neuralgia, *POSTOPERATIVE pain
Abstract

Trigeminal neuralgia (TN) is more prevalent among women. However, while microvascular decompression (MVD) is the most effective long-term surgical treatment for TN, it is unclear whether it is equally efficacious for men and women. We sought to characterize the relationship between sex and pain outcomes following MVD for TN. From 2007 to 2020, 938 unilateral TN patients were treated with MVD at our institution. Patient demographics, clinical characteristics, operative features, and pain outcomes were recorded. Differences between men and women were analyzed via t -test and chi-squared analyses. A multivariate ordinal regression was used to establish significant predictors of pain outcome. Differences in time to pain recurrence were assessed via Cox proportional hazards and Kaplan-Meier nonparametric survival analysis. A majority (67%) of the 938 patients analyzed were female. Men and women presented with similar preoperative pain severity (P = 0.17). Female sex (P = 0.048) and younger age (P = 0.03) were independently associated with worsened Barrow Neurological Institute pain scores at 3-month follow-up on multivariate analysis. Women were also more likely to experience recurrence than men (P = 0.01), and time to recurrence was shorter among women (P = 0.02). Only female sex was independently associated with increased risk of postoperative pain recurrence on multivariate Cox proportional hazards regression (P = 0.01). Female TN patients undergoing MVD had worse pain outcomes, more frequent pain recurrence, and shorter time to recurrence. Our results indicate a sex-specific dimorphism in response to MVD among TN patients. [ABSTRACT FROM AUTHOR]

Published
2023
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6. On the selection of AGN neutrino source candidates for a source stacking analysis with neutrino telescopes

Author

Achterberg, A., Ackermann, M., Adams, J., Ahrens, J., Atlee, D.W., Bahcall, J.N., Bai, X., Baret, B., Bartelt, M., Barwick, S.W., Bay, R., Beattie, K., Becka, T., Becker, J.K., Becker, K.-H., Berghaus, P., Berley, D., Bernardini, E., Bertrand, D., Besson, D.Z., Blaufuss, E., Boersma, D.J., Bohm, C., Böser, S., Botner, O., Bouchta, A., Braun, J., Burgess, C., Burgess, T., Castermans, T., Chirkin, D., Clem, J., Collin, B., Conrad, J., Cooley, J., Cowen, D.F., D’Agostino, M.V., Davour, A., Day, C.T., De Clercq, C., Desiati, P., DeYoung, T., Dreyer, J., Duvoort, M.R., Edwards, W.R., Ehrlich, R., Ellsworth, R.W., Evenson, P.A., Fazely, A.R., Feser, T., Filimonov, K., Gaisser, T.K., Gallagher, J., Ganugapati, R., Geenen, H., Gerhardt, L., Goldschmidt, A., Goodman, J.A., Greene, M.G., Grullon, S., Groß, A., Gunasingha, R.M., Hallgren, A., Halzen, F., Han, K., Hanson, K., Hardtke, D., Hardtke, R., Harenberg, T., Hart, J.E., Hauschildt, T., Hays, D., Heise, J., Helbing, K., Hellwig, M., Herquet, P., Hill, G.C., Hodges, J., Hoffman, K.D., Hoshina, K., Hubert, D., Hughey, B., Hulth, P.O., Hultqvist, K., Hundertmark, S., Ishihara, A., Jacobsen, J., Japaridze, G.S., Jones, A., Joseph, J.M., Kampert, K.-H., Karle, A., Kawai, H., Kelley, J.L., Kestel, M., Kitamura, N., Klein, S.R., Klepser, S., Kohnen, G., Kolanoski, H., Köpke, L., Krasberg, M., Kuehn, K., Landsman, H., Lang, R., Leich, H., Leuthold, M., Liubarsky, I., Lundberg, J., Madsen, J., Mase, K., Matis, H.S., McCauley, T., McParland, C.P., Meli, A., Messarius, T., Mészáros, P., Minor, R.H., Miočinović, P., Miyamoto, H., Mokhtarani, A., Montaruli, T., Morey, A., Morse, R., Movit, S.M., Münich, K., Nahnhauer, R., Nam, J.W., Nießen, P., Nygren, D.R., Ögelman, H., Olbrechts, Ph., Olivas, A., Patton, S., Peña-Garay, C., Pérez de los Heros, C., Pieloth, D., Pohl, A.C., Porrata, R., Pretz, J., Price, P.B., Przybylski, G.T., Rawlins, K., Razzaque, S., Refflinghaus, F., Resconi, E., Rhode, W., Ribordy, M., Richter, S., Rizzo, A., Robbins, S., Rott, C., Rutledge, D., Sander, H.-G., Schlenstedt, S., Schneider, D., Seckel, D., Seo, S.H., Seunarine, S., Silvestri, A., Smith, A.J., Solarz, M., Song, C., Sopher, J.E., Spiczak, G.M., Spiering, C., Stamatikos, M., Stanev, T., Steffen, P., Steele, D., Stezelberger, T., Stokstad, R.G., Stoufer, M.C., Stoyanov, S., Sulanke, K.-H., Sullivan, G.W., Sumner, T.J., Taboada, I., Tarasova, O., Tepe, A., Thollander, L., Tilav, S., Toale, P.A., Turčan, D., van Eijndhoven, N., Vandenbroucke, J., Voigt, B., Wagner, W., Walck, C., Waldmann, H., Walter, M., Wang, Y.-R., Wendt, C., Wiebusch, C.H., Wikström, G., Williams, D.R., Wischnewski, R., Wissing, H., Woschnagg, K., Xu, X.W., Yodh, G., Yoshida, S., Zornoza, J.D., and Biermann, P.L.

Published
2006
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7. A comparative study of the lattice structure, optical band gap, electrical conductivity and polarization at different stages of the heat treatment of chemical routed Al(OH)3.

Author

Nettar, Collin B., Bhowmik, R.N., and Sinha, A.K.

Subjects
*ELECTRIC conductivity, *BAND gaps, *HEAT treatment, *POWDERS, *ALUMINUM oxide, *VOLTAGE, *OPTICAL polarization
Abstract

Aluminium hydroxide (Al(OH) 3) was prepared by chemical reaction of the Al(NO 3) 3 in alkaline medium. The as-prepared powder was heated in the temperature range 250 °C to 1250 °C for studying the structural phase transformation at different stages of the heat treatment. The synchrotron x-ray diffraction patterns confirmed a structural transformation of Al(OH) 3 through different (Boehmite, γ, θ, δ, and α) polymorphic phases of Al 2 O 3 on increasing the heat treatment temperature. The samples in Boehmite (γ-AlOOH) and α- Al 2 O 3 phases showed Raman active modes, whereas the intermediate (meta-stable) multi-phased structure showed weak Raman active peaks. The analysis of UV–visible spectra of the samples indicated two optical band gap energy values in the high energy range 4.50–4.73 eV and low energy range 3.06–3.84 eV. The voltage dependence of current, capacitance and electrical polarization were recorded to study electrical properties in heat treated samples. The capacitance value, derived from the polarization, showed a usual increasing trend on decreasing the measurement frequency (inverse of the time) of driving electric voltage. The measured electrical polarization in the samples was found to be highly correlated to their electrical conductivity and the results are helpful to understand the role of electrical conductivity on exhibiting the apparently ferroelectric properties in high conductive and low polarizable dielectric oxides. [ABSTRACT FROM AUTHOR]

Published
2022
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8. Limits to the muon flux from neutralino annihilations in the Sun with the AMANDA detector

Author

Ackermann, M., Ahrens, J., Bai, X., Bartelt, M., Barwick, S.W., Bay, R.C., Becka, T., Becker, K.-H., Becker, J.-K., Berghaus, P., Bernardini, E., Bertrand, D., Boersma, D.J., Böser, S., Botner, O., Bouchta, A., Bouhali, O., Burgess, C., Burgess, T., Castermans, T., Chirkin, D., Collin, B., Conrad, J., Cooley, J., Cowen, D.F., D’Agostino, M., Davour, A., De Clercq, C., de los Heros, C.P., DeYoung, T., Desiati, P., Ekström, P., Feser, T., Gaisser, T.K., Ganugapati, R., Geenen, H., Gerhardt, L., Goldschmidt, A., Gross, A., Hallgren, A., Halzen, F., Hanson, K., Hardtke, D.H., Harenberg, T., Hauschildt, T., Hellwig, M., Helbing, K., Herquet, P., Hill, G.C., Hodges, J., Hubert, D., Hughey, B., Hulth, P.O., Hultqvist, K., Hundertmark, S., Jacobsen, J., Kampert, K.H, Karle, A., Kestel, M., Kohnen, G., Köpke, L., Kowalski, M., Kuehn, K., Lang, R., Leich, H., Leuthold, M., Liubarsky, I., Lundberg, J., Madsen, J., Marciniewski, P., Matis, H.S., McParland, C.P., Messarius, T., Minaeva, Y., Miočinović, P., Morse, R., Münich, K., Nahnhauer, R., Nam, J.W., Neunhöffer, T., Niessen, P., Nygren, D.R., Ögelman, H., Olbrechts, Ph., Pohl, A., Porrata, R., Price, P.B., Przybylski, G.T., Rawlins, K., Resconi, E., Rhode, W., Ribordy, M., Richter, S., Robbins, S., Rodríguez Martino, J., Sander, H.-G., Schlenstedt, S., Schneider, D., Schwarz, R., Silvestri, A., Solarz, M., Spiczak, G.M., Spiering, C., Stamatikos, M., Steele, D., Steffen, P., Stokstad, R.G., Sulanke, K.-H., Taboada, I., Tarasova, O., Thollander, L., Tilav, S., Wagner, W., Walck, C., Walter, M., Wang, Y.-R., Wiebusch, C.H., Wischnewski, R., Wissing, H., and Woschnagg, K.

Published
2006
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9. Flux limits on ultra high energy neutrinos with AMANDA-B10

Author

Ackermann, M., Ahrens, J., Albrecht, H., Atlee, D., Bai, X., Bay, R., Bartelt, M., Barwick, S.W., Becka, T., Becker, K.H., Becker, J.K., Bernardini, E., Bertrand, D., Boersma, D.J., Böser, S., Botner, O., Bouchta, A., Bouhali, O., Braun, J., Burgess, C., Burgess, T., Castermans, T., Chirkin, D., Coarasa, T., Collin, B., Conrad, J., Cooley, J., Cowen, D.F., Davour, A., Clercq, C. De, DeYoung, T., Desiati, P., Ekström, P., Feser, T., Gaisser, T.K., Ganugapati, R., Geenen, H., Gerhardt, L., Goldschmidt, A., Groß, A., Hallgren, A., Halzen, F., Hanson, K., Hardtke, D., Hardtke, R., Harenberg, T., Hauschildt, T., Helbing, K., Hellwig, M., Herquet, P., Hill, G.C., Hodges, J., Hubert, D., Hughey, B., Hulth, P.O., Hultqvist, K., Hundertmark, S., Jacobsen, J., Kampert, K.H., Karle, A., Kelley, J., Kestel, M., Köpke, L., Kowalski, M., Krasberg, M., Kuehn, K., Leich, H., Leuthold, M., Lundberg, J., Madsen, J., Mandli, K., Marciniewski, P., Matis, H.S., McParland, C.P., Messarius, T., Minaeva, Y., Miočinović, P., Morse, R., Movit, S., Münich, K., Nahnhauer, R., Nam, J.W., Neunhöffer, T., Niessen, P., Nygren, D.R., Ögelman, H., Olbrechts, Ph., de los Heros, C. Pérez, Pohl, A.C., Porrata, R., Price, P.B., Przybylski, G.T., Rawlins, K., Resconi, E., Rhode, W., Ribordy, M., Richter, S., Martino, J. Rodríguez, Rutledge, D., Sander, H.G., Schinarakis, K., Schlenstedt, S., Schneider, D., Schwarz, R., Silvestri, A., Solarz, M., Spiczak, G.M., Spiering, C., Stamatikos, M., Steele, D., Steffen, P., Stokstad, R.G., Sulanke, K.H., Taboada, I., Tarasova, O., Thollander, L., Tilav, S., Voicu, L.C., Wagner, W., Walck, C., Walter, M., Wang, Y.R., Wiebusch, C.H., Wischnewski, R., Wissing, H., Woschnagg, K., and Yodh, G.

Published
2005
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10. New results from the AMANDA Neutrino Telescope

Author

Bernardini, Elisa, Ackermann, M., Ahrens, J., Bai, X., Bay, R., Bartelt, M., Barwick, S.W., Becka, T., Becker, J.K., Becker, K.H., Bernardini, E., Bertrand, D., Boersma, D.J., Böser, S., Botner, O., Bouchta, A., Bouhali, O., Braun, J., Burgess, C., Burgess, T., Castermans, T., Chen, A., Chirkin, D., Collin, B., Conrad, J., Cooley, J., Cowen, D.F., Davour, A., De Clercq, C., DeYoung, T., Desiati, P., Ekström, P., Feser, T., Gaisser, T.K., Ganugapati, R., Geenen, H., Gerhardt, L., Groß, A., Goldschmidt, A., Hallgren, A., Halzen, F., Hanson, K., Hardtke, D., Hardtke, R., Harenberg, T., Hauschildt, T., Helbing, K., Hellwig, M., Herquet, P., Hill, G.C., Hodges, J., Hubert, D., Hughey, B., Hulth, P.O., Hultqvist, K., Hundertmark, S., Jacobsen, J., Kampert, K.H., Karle, A., Kelley, J.L., Kestel, M., Kohnen, G., Köpke, L., Kowalski, M., Krasberg, M., Kuehn, K., Leich, H., Leuthold, M., Liubarsky, I., Lundberg, J., Madsen, J., Marciniewski, P., Matis, H.S., McParland, C.P., Messarius, T., Minaeva, Y., Miočinović, P., Morse, R., Münich, K., Nam, J.K., Nahnhauer, R., Neunhöffer, T., Niessen, P., Nygren, D.R., Ögelman, H., Olbrechts, Ph., Pérez de los Heros, C., Pohl, A.C., Porrata, R., Price, P.B., Przybylski, G.T., Rawlins, K., Resconi, E., Rhode, W., Ribordy, M., Richter, S., Rodríguez Martino, J., Sander, H.G., Schinarakig, K., Schlenstedt, S., Schneider, D., Schwarz, R., Silvestri, A., Solarz, M., Spiczak, G.M., Spiering, C., Stamatikos, M., Steele, D., Steffen, P., Stokstad, R.G., Sulanke, K.H., Taboada, I., Tarasova, O., Thollander, L., Tilav, S., Wagner, W., Walck, C., Walter, M., Wang, Y.R., Wendt, C., Wiebusch, C.H., Wischnewski, R., Wissing, H., Woschnagg, K., and Yodh, G.

Published
2005
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11. New results from the Antarctic Muon And Neutrino Detector Array

Author

Woschnagg, K., Ackermann, M., Ahrens, J., Albrecht, H., Atlee, D.W., Bai, X., Bay, R., Bartelt, M., Barwick, S.W., Becka, T., Becker, K.-H., Becker, J.K., Bernardini, E., Bertrand, D., Boersma, D.J., Böser, S., Botner, O., Bouchta, A., Bouhali, O., Braun, J., Burgess, C., Burgess, T., Castermans, T., Chirkin, D., Coarasa, J.A., Collin, B., Conrad, J., Cooley, J., Cowen, D.F., Davour, A., De Clercq, C., DeYoung, T., Desiati, P., Ekström, P., Feser, T., Gaisser, T.K., Ganugapati, R., Geenen, H., Gerhardt, L., Goldschmidt, A., Groß, A., Hallgren, A., Halzen, F., Hanson, K., Hardtke, D., Hardtke, R., Harenberg, T., Hauschildt, T., Helbing, K., Hellwig, M., Herquet, P., Hill, G.C., Hodges, J., Hubert, D., Hughey, B., Hulth, P.O., Hultqvist, K., Hundertmark, S., Jacobsen, J., Kampert, K.-H., Karle, A., Kelley, J., Kestel, M., Köpke, L., Kowalski, M., Krasberg, M., Kuehn, K., Leich, H., Leuthold, M., Lundberg, J., Madsen, J., Mandli, K., Marciniewski, P., Matis, H.S., McParland, C.P., Messarius, T., Minaeva, Y., Miočinović, P., Morse, R., Münich, K., Nahnhauer, R., Nam, J.W., Neunhöffer, T., Niessen, P., Nygren, D.R., Ögelman, H., Olbrechts, Ph., Pérez de los Heros, C., Pohl, A.C., Porrata, R., Price, P.B., Przybylski, G.T., Rawlins, K., Resconi, E., Rhode, W., Ribordy, M., Richter, S., Rodríguez Martino, J., Sander, H.-G., Schinarakis, K., Schlenstedt, S., Schneider, D., Schwarz, R., Seo, S.H., Silvestri, A., Solarz, M., Spiczak, G.M., Spiering, C., Stamatikos, M., Steele, D., Steffen, P., Stokstad, R.G., Sulanke, K.-H., Taboada, I., Tarasova, O., Thollander, L., Tilav, S., Vandenbroucke, J., Voicu, L.C., Wagner, W., Walck, C., Walter, M., Wang, Y.R., Wiebusch, C.H., Wischnewski, R., Wissing, H., and Yodh, G.

Published
2005
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12. Search for neutrino-induced cascades with AMANDA

Author

Ackermann, M., Ahrens, J., Albrecht, H., Bai, X., Bay, R., Bartelt, M., Barwick, S.W., Becka, T., Becker, K.H., Becker, J.K., Bernardini, E., Bertrand, D., Boersma, D.J., Böser, S., Botner, O., Bouchta, A., Bouhali, O., Braun, J., Burgess, C., Burgess, T., Castermans, T., Chirkin, D., Collin, B., Conrad, J., Cooley, J., Cowen, D.F., Davour, A., De Clercq, C., DeYoung, T., Desiati, P., Ekström, P., Feser, T., Gaisser, T.K., Ganugapati, R., Geenen, H., Gerhardt, L., Goldschmidt, A., Groß, A., Hallgren, A., Halzen, F., Hanson, K., Hardtke, R., Harenberg, T., Hauschildt, T., Helbing, K., Hellwig, M., Herquet, P., Hill, G.C., Hodges, J., Hubert, D., Hughey, B., Hulth, P.O., Hultqvist, K., Hundertmark, S., Jacobsen, J., Kampert, K.H., Karle, A., Kelley, J., Kestel, M., Köpke, L., Kowalski, M., Krasberg, M., Kuehn, K., Leich, H., Leuthold, M., Liubarsky, I., Madsen, J., Mandli, K., Marciniewski, P., Matis, H.S., McParland, C.P., Messarius, T., Minaeva, Y., Miočinović, P., Morse, R., Münich, K., Nahnhauer, R., Nam, J.W., Neunhöffer, T., Niessen, P., Nygren, D.R., Ögelman, H., Olbrechts, Ph., Pérez de los Heros, C., Pohl, A.C., Porrata, R., Price, P.B., Przybylski, G.T., Rawlins, K., Resconi, E., Rhode, W., Ribordy, M., Richter, S., Rodrı́guez Martino, J., Sander, H.G., Schinarakis, K., Schlenstedt, S., Schmidt, T., Schneider, D., Schwarz, R., Silvestri, A., Solarz, M., Spiczak, G.M., Spiering, C., Stamatikos, M., Steele, D., Steffen, P., Stokstad, R.G., Sulanke, K.H., Taboada, I., Thollander, L., Tilav, S., Wagner, W., Walck, C., Walter, M., Wang, Y.R., Wiebusch, C.H., Wischnewski, R., Wissing, H., Woschnagg, K., and Yodh, G.

Published
2004
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13. Status of the IceCube Neutrino Observatory

Author

Ahrens, J, Bahcall, J.N, Bai, X, Bay, R.C, Becka, T, Becker, K.-H, Berley, D, Bernardini, E, Bertrand, D, Besson, D.Z, Blaufuss, E, Boersma, D.J, Böser, S, Bohm, C, Botner, O, Bouchta, A, Bouhali, O, Burgess, T, Carithers, W, Castermans, T, Cavin, J, Chinowsky, W, Chirkin, D, Collin, B, Conrad, J, Cooley, J, Cowen, D.F, Davour, A, De Clercq, C, DeYoung, T, Desiati, P, Ehrlich, R, Ellsworth, R.W, Evenson, P.A, Fazely, A.R, Feser, T, Gaisser, T.K, Gallagher, J, Ganugapati, R, Geenen, H, Goldschmidt, A, Goodman, J.A, Gunasingha, R.M, Hallgren, A, Halzen, F, Hanson, K, Hardtke, R, Hauschildt, T, Hays, D, Helbing, K, Hellwig, M, Herquet, P, Hill, G.C, Hubert, D, Hughey, B, Hulth, P.O, Hultqvist, K, Hundertmark, S, Jacobsen, J, Japaridze, G.S, Jones, A, Karle, A, Kawai, H, Kestel, M, Kitamura, N, Koch, R, Köpke, L, Kowalski, M, Lamoureux, J.I, Leich, H, Liubarsky, I, Madsen, J, Matis, H.S, McParland, C.P, Messarius, T, Mészáros, P, Minaeva, Y, Minor, R.H, Miočinović, P, Miyamoto, H, Morse, R, Nahnhauer, R, Neunhöffer, T, Niessen, P, Nygren, D.R, Ögelman, H, Olbrechts, Ph, Patton, S, Paulos, R, Pérez de los Heros, C, Pohl, A.C, Pretz, J, Price, P.B, Przybylski, G.T, Rawlins, K, Razzaque, S, Resconi, E, Rhode, W, Ribordy, M, Richter, S, Sander, H.-G, Schinarakis, K, Schlenstedt, S, Schneider, D, Schwarz, R, Seckel, D, Smith, A.J, Solarz, M, Spiczak, G.M, Spiering, C, Stamatikos, M, Stanev, T, Steele, D, Steffen, P, Stezelberger, T, Stokstad, R.G, Sulanke, K.-H, Sullivan, G.W, Sumner, T.J, Taboada, I, Tilav, S, van Eijndhoven, N, Wagner, W, Walck, C, Wang, R.-R, Wiebusch, C.H, Wiedemann, C, Wischnewski, R, Wissing, H, Woschnagg, K, and Yoshida, S

Published
2004
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14. Sensitivity of the IceCube detector to astrophysical sources of high energy muon neutrinos

Author

Ahrens, J, Bahcall, J.N, Bai, X, Bay, R.C, Becka, T, Becker, K.-H, Berley, D, Bernardini, E, Bertrand, D, Besson, D.Z, Biron, A, Blaufuss, E, Boersma, D.J, Böser, S, Bohm, C, Botner, O, Bouchta, A, Bouhali, O, Burgess, T, Carithers, W, Castermans, T, Cavin, J, Chinowsky, W, Chirkin, D, Collin, B, Conrad, J, Cooley, J, Cowen, D.F, Davour, A, De Clercq, C, DeYoung, T, Desiati, P, Ehrlich, R, Ellsworth, R.W, Evenson, P.A, Fazely, A.R, Feser, T, Gaisser, T.K, Gallagher, J, Ganugapati, R, Geenen, H, Goldschmidt, A, Goodman, J.A, Gunasingha, R.M, Hallgren, A, Halzen, F, Hanson, K, Hardtke, R, Hauschildt, T, Hays, D, Helbing, K, Hellwig, M, Herquet, P, Hill, G.C, Hubert, D, Hughey, B, Hulth, P.O, Hultqvist, K, Hundertmark, S, Jacobsen, J, Japaridze, G.S, Jones, A, Karle, A, Kawai, H, Kestel, M, Kitamura, N, Koch, R, Köpke, L, Kowalski, M, Lamoureux, J.I, Leich, H, Leuthold, M, Liubarsky, I, Madsen, J, Matis, H.S, McParland, C.P, Messarius, T, Mészáros, P, Minaeva, Y, Minor, R.H, Miočinović, P, Miyamoto, H, Morse, R, Nahnhauer, R, Neunhöffer, T, Niessen, P, Nygren, D.R, Ögelman, H, Olbrechts, Ph, Patton, S, Paulos, R, Pérez de los Heros, C, Pohl, A.C, Pretz, J, Price, P.B, Przybylski, G.T, Rawlins, K, Razzaque, S, Resconi, E, Rhode, W, Ribordy, M, Richter, S, Sander, H.-G, Schinarakis, K, Schlenstedt, S, Schmidt, T, Schneider, D, Schwarz, R, Seckel, D, Smith, A.J, Solarz, M, Spiczak, G.M, Spiering, C, Stamatikos, M, Stanev, T, Steele, D, Steffen, P, Stezelberger, T, Stokstad, R.G, Sulanke, K.-H, Sullivan, G.W, Sumner, T.J, Taboada, I, Tilav, S, van Eijndhoven, N, Wagner, W, Walck, C, Wang, R.-R, Wiebusch, C.H, Wiedemann, C, Wischnewski, R, Wissing, H, Woschnagg, K, and Yoshida, S

Published
2004
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15. Results from the AMANDA neutrino telescope

Author

de los Heros, C., Ackermann, M., Ahrens, J., Albrecht, H., Bai, X., Bay, R., Bartelt, M., Barwick, S.W., Becka, T., Becker, K.-H., Becker, J.-K., Bernardini, E., Bertrand, D., Boersma, D.J., Böser, S., Botner, O., Bouchta, A., Bouhali, O., Braun, J., Burgess, C., Burgess, T., Castermans, T., Chirkin, D., Collin, B., Conrad, J., Cooley, J., Cowen, D.F., Davour, A., De Clercq, C., DeYoung, T., Desiati, P., Ekström, P., Feser, T., Gaisser, T.K., Ganugapati, R., Geenen, H., Gerhardt, L., Goldschmidt, A., Gross, A., Hallgren, A., Halzen, F., Hanson, K., Hardtke, R., Harenberg, T., Hauschildt, T., Helbing, K., Hellwig, M., Herquet, P., Hill, G.C., Hodges, J., Hubert, D., Hughey, B., Hulth, P.O., Hultqvist, K., Hundertmark, S., Jacobsen, J., Kampert, K.H., Karle, A., Kelley, J., Kestel, M., Köpke, L., Kowalski, M., Krasberg, M., Kuehn, K., Leich, H., Leuthold, M., Liubarsky, I., Madsen, J., Mandli, K., Marciniewski, P., Matis, H.S., McParland, C.P., Messarius, T., Minaeva, Y., Miočinović, P., Morse, R., Münich, K., Nahnhauer, R., Nam, J.W., Neunhöffer, T., Niessen, P., Nygren, D.R., Ögelman, H., Olbrecht, Ph., Pohl, A.C., Porrata, R., Price, P.B., Przybylski, G.T., Rawlins, K., Resconi, E., Rhode, W., Ribordy, M., Richter, S., Rodríguez Martino, J., Sander, H.-G., Schinarakis, K., Schlenstedt, S., Schneider, D., Schwarz, R., Silvestri, A., Solarz, M., Spiczak, G.M., Spiering, C., Stamatikos, M., Steele, D., Steffen, P., Stokstad, R.G., Sulanke, K.-H., Taboada, I., Thollander, L., Tilav, S., Wagner, W., Walck, C., Walter, M., Wang, Y.-R., Wiebusch, C.H., Wischnewski, R., Wissing, H., Woschnagg, K., and Yodh, G.

Published
2004
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16. Muon track reconstruction and data selection techniques in AMANDA

Author

Ahrens, J., Bai, X., Bay, R., Barwick, S.W., Becka, T., Becker, J.K., Becker, K.-H., Bernardini, E., Bertrand, D., Biron, A., Boersma, D.J., Böser, S., Botner, O., Bouchta, A., Bouhali, O., Burgess, T., Carius, S., Castermans, T., Chirkin, D., Collin, B., Conrad, J., Cooley, J., Cowen, D.F., Davour, A., De Clercq, C., DeYoung, T., Desiati, P., Dewulf, J.-P., Ekström, P., Feser, T., Gaug, M., Gaisser, T.K., Ganugapati, R., Geenen, H., Gerhardt, L., Groß, A., Goldschmidt, A., Hallgren, A., Halzen, F., Hanson, K., Hardtke, R., Harenberg, T., Hauschildt, T., Helbing, K., Hellwig, M., Herquet, P., Hill, G.C., Hubert, D., Hughey, B., Hulth, P.O., Hultqvist, K., Hundertmark, S., Jacobsen, J., Karle, A., Kestel, M., Köpke, L., Kowalski, M., Kuehn, K., Lamoureux, J.I., Leich, H., Leuthold, M., Lindahl, P., Liubarsky, I., Madsen, J., Marciniewski, P., Matis, H.S., McParland, C.P., Messarius, T., Minaeva, Y., Miočinović, P., Mock, P.C., Morse, R., Münich, K.S., Nam, J., Nahnhauer, R., Neunhöffer, T., Niessen, P., Nygren, D.R., Ögelman, H., Olbrechts, Ph., Pérez de los Heros, C., Pohl, A.C., Porrata, R., Price, P.B., Przybylski, G.T., Rawlins, K., Resconi, E., Rhode, W., Ribordy, M., Richter, S., Rodrı́guez Martino, J., Ross, D., Sander, H.-G., Schinarakis, K., Schlenstedt, S., Schmidt, T., Schneider, D., Schwarz, R., Silvestri, A., Solarz, M., Spiczak, G.M., Spiering, C., Stamatikos, M., Steele, D., Steffen, P., Stokstad, R.G., Sulanke, K.-H., Streicher, O., Taboada, I., Thollander, L., Tilav, S., Wagner, W., Walck, C., Wang, Y.-R., Wiebusch, C.H., Wiedemann, C., Wischnewski, R., Wissing, H., Woschnagg, K., and Yodh, G.

Published
2004
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18. Circulating maternal corticotropin-releasing hormone and gonadotropin-releasing hormone in normal and abnormal pregnancies

Author

Sorem, Kimberlee A., Smikle, Collin B., Spencer, Deborah K., Yoder, Brad A., Graveson, Marcia A., and Siler-Khodr, Theresa M.

Subjects
Miscarriage -- Diagnosis, Corticotropin releasing hormone -- Measurement, Gonadotropin releasing hormone -- Measurement, Pregnancy -- Physiological aspects, Health
Abstract

The amount of circulating maternal corticotropin-releasing hormone (CRH) and gonadotropin-releasing hormone (GnRH) appears to vary during pregnancy. The amounts do not appear to serve as useful predictors of early miscarriage. Researchers periodically measured blood levels of CRH and GnRH in 51 women throughout pregnancy. CRH increased steadily to a peak amount during labor. GnRH increased in early pregnancy, declined in mid-pregnancy, and increased again at the end of pregnancy. Concentrations were similar in 33 women having full-term pregnancies and 10 women experiencing early miscarriage or premature delivery.

Published
1996

19. Modifications in micro-structural, optical, and electrical properties of polycrystalline α-Al2O3 by 100 MeV Ag9+ ion beam irradiation.

Author

Nettar, Collin B., Bhowmik, R.N., Asokan, K., Meena, R.C., and Khan, S.A.

Subjects
*ION beams, *IRRADIATION, *ENERGY dispersive X-ray spectroscopy, *CONDUCTION bands, *ELECTRON field emission, *VALENCE fluctuations, *X-ray photoelectron spectroscopy
Abstract

We report the modifications of lattice structure, optical and electrical properties of α-Al 2 O 3 by 100 MeV Ag9+ ion beam irradiation with fluences in the range of 1 × 1011 -1 × 1013 ions/cm2. X-ray diffraction patterns have confirmed the polycrystalline form of rhombohedral structure (space group R-3c) for both pristine and irradiated samples. The Raman active phonon-modes of the pristine sample gradually disappeared with the increase of fluence. The Field Emission Scanning Electron Microscopic images indicated a transformation of the surface morphology from a distinct and layered-type grain structure in pristine sample to a soft layered-type grain structure in the irradiated sample of highest infuence. The Energy Dispersive X-Ray Analysis confirmed elemental composition of the irradiated samples close to nominal value of pristine sample. The X-ray Photoelectron spectroscopy confirmed chemical state modification at the surface of irradiated samples, where a fraction of the Al–O bonds has reduced into metallic Al state. The electrical conductivity in irradiated samples has been enhanced and showed thermal irreversibility where the conductivity in the cooling mode is smaller than that in the warming mode. The optical band gap and activation energy for the electronic transition from valence band to conduction band of α-Al 2 O 3 have been affected by Ag9+ ion beam irradiation. • Demonstrate the effects of Ag ion beam interactions with the lattice structure of α-Al 2 O 3. • The effects of low and high fluence levels on reversibility and irreversibility of properties. • Modification of surface chemical state by ion beam irradiation on α-Al 2 O 3. • The broken Al–O bonds at the surface and its effects on metal like conductivity behaviour. • The materials have been characterized by XRD, Raman spectra, FE-SEM and XPS. [ABSTRACT FROM AUTHOR]

Published
2023
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20. Hypothermia is Associated with Improved Neurological Outcomes After Mechanical Thrombectomy.

Author

Xu, Risheng, Nair, Sumil K., Kilgore, Collin B., Xie, Michael E., Jackson, Christopher M., Hui, Ferdinand, Gailloud, Phillipe, McDougall, Cameron G., Gonzalez, L. Fernando, Huang, Judy, Tamargo, Rafael J., and Caplan, Justin

Subjects
*TISSUE plasminogen activator, *INDUCED hypothermia, *ISCHEMIC stroke, *THROMBECTOMY, *HYPOTHERMIA, *BODY temperature
Abstract

Acute ischemic stroke (AIS) is the second leading cause of death globally. Mechanical thrombectomy (MT) has improved patient prognosis but expedient treatment is still necessary to minimize anoxic injury. Lower intraoperative body temperature decreases cerebral oxygen demand, but the role of hypothermia in treatment of AIS with MT is unclear. We retrospectively reviewed patients undergoing MT for AIS from 2014 to 2020 at our institution. Patient demographics, comorbidities, intraoperative parameters, and outcomes were collected. Maximum body temperature was extracted from minute-by-minute anesthesia readings, and patients with maximal temperature below 36°C were considered hypothermic. Risk factors were assessed by χ2 and multivariate ordinal regression. Of 68 patients, 27 (40%) were hypothermic. There was no significant association of hypothermia with patient age, comorbidities, time since last known well, number of passes intraoperatively, favorable revascularization, tissue plasminogen activator use, and immediate postoperative complications. Hypothermic patients exhibited better neurologic outcome at 3-month follow-up (P = 0.02). On multivariate ordinal regression, lower maximum intraoperative body temperature was associated with improved 3-month outcomes (P < 0.001), when adjusting for other factors influencing neurological outcomes. Other significant protective factors included younger age (P = 0.03), better revascularization (P = 0.03), and conscious sedation (P = 0.02). Lower intraoperative body temperature during MT was independently associated with improved neurological outcome in this single center retrospective series. These results may help guide clinicians in employing therapeutic hypothermia during MT to improve long-term neurologic outcomes from AIS, although larger studies are needed. [ABSTRACT FROM AUTHOR]

Published
2024
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21. Peut-on prélever une grande baguette osseuse radiale dans le lambeau antébrachial radial composite ? Étude radio-anatomique et microscannographique originale.

Author

De Taddéo, A., Collin, B., Hardy, H., Guichard, B., Trouilloud, P., and Trost, O.

Abstract

Résumé: Buts de l’étude: Le lambeau antébrachial radial composite est une option thérapeutique pour les grandes pertes de substances traumatiques ou cancérologiques de la face. Or ce lambeau a souvent été critiqué pour sa réserve osseuse jugée inadéquate et insuffisante pour reconstruire des pertes de substances osseuses, ou pour la réhabilitation prothétique implanto-portée. En outre, une morbidité élevée du site donneur est souvent déplorée. Le but de ce travail anatomoradiologique était d’étudier la vascularisation du lambeau antébrachial radial composite, et en particulier de sa baguette osseuse. Matériel et méthodes: Une étude anatomoradiologique a été réalisée sur sept avant-bras prélevés sur des cadavres frais. Après lavage des vaisseaux par injection intra-artérielle d’un mélange d’eau et d’acétate de potassium, une préparation par injection intra-artérielle d’un mélange d’oxyde de plomb rouge et de gélatine était pratiquée. Après recongélation, une étude tomodensitométrique des pièces anatomiques ainsi préparées était réalisée. Dans un second temps, les lambeaux antébrachiaux composites étaient prélevés, puis analysés par examen microscannographique (NanoSPECT-CT Bioscan®, voxel 220 microns). Les branches collatérales cutanées et osseuses issues de l’artère radiale étaient comptées et localisées en trois tiers (supérieur, moyen et inférieur). Résultats: Une artère nourricière diaphysaire principale radiale était mise en évidence dans les sept dissections : le foramen nourricier se situait à la face antéromédiale du radius, entre 45 et 65 % de sa longueur. Un système vasculaire périosté dense était mis en évidence, alimenté par une à quatre branches musculopériostées et une à six artères fascio-périostées. L’étude des lambeaux a au total mis en évidence en moyenne cinq branches radiales à destinée osseuse et 12 branches perforantes pour la palette cutanée. Conclusion: Les résultats de cette étude préclinique suggéraient qu’il était possible de prélever avec une grande sécurité vasculaire une baguette osseuse radiale allant jusqu’à 16 cm, sans tenir compte de la morbidité du site donneur qui reste une limite majeure de ce lambeau. L’approche anatomoradiologique (tomodensitométrie conventionnelle et microscanner) permettait une étude fine de la microvascularisation tissulaire, aisément applicable aux lambeaux, et ouvrant un champ de recherches original dans le domaine de la chirurgie réparatrice. [Copyright &y& Elsevier]

Published
2014
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25. Time course of asymmetric dimethylarginine (ADMA) and oxidative stress in fructose-hypertensive rats: A model related to metabolic syndrome

Author

Korandji, C., Zeller, M., Guilland, J.C., Collin, B., Lauzier, B., Sicard, P., Duvillard, L., Goirand, F., Moreau, D., Cottin, Y., Rochette, L., and Vergely, C.

Subjects
*METABOLIC syndrome, *ARGININE, *OXIDATIVE stress, *FRUCTOSE, *LABORATORY rats, *CARDIOVASCULAR diseases, *HYPERTENSION, *ANIMAL models in research, *BLOOD plasma
Abstract

Abstract: Objective: Asymmetric dimethylarginine (ADMA) is an endogenous modulator of endothelial function and oxidative stress, and increased levels of this molecule have been reported in some metabolic disorders and cardiovascular diseases. The aim of this work was to analyze the time course of dimethylarginine compounds and oxidative stress levels and the relationship between these and cardiovascular function in fructose-hypertensive rats. Methods and results: 90 male Sprague–Dawley rats were randomized into 2 groups, fed for 3 months with standard (C) chow supplemented or not with fructose (F, 60%). After sacrifice at different weeks (W), the aorta and plasma were harvested to assess the vascular and biochemical parameters. Our work showed that the plasma levels of ADMA in the fructose-fed rats increased after 2 weeks of the diet (1.6±0.3μM vs. 1.2±0.3μM, p <0.05) with no changes in plasma levels of either SDMA or l-arginine and after an increase in glycemia. Levels of vascular oxidative stress, estimated in aortic segments using an oxidative fluorescence technique, were higher in the F group (W2: 1.14±0.2% vs. 0.33±0.02%, p <0.01). An increase in expression levels of nitrotyrosine (3-fold) and iNOS (2-fold) were noted in the fructose-fed rats. After 1 month, this was associated with a significant increase in NAD(P)H oxidase activity. Concerning vascular function, a 15% decrease in maximal endothelium-dependent relaxation was found in the aorta of the F group. Our work showed that the presence of exogenous L-MMA, an inhibitor of NO synthase, was associated with a significant reduction in endothelium-dependent relaxation in isolated aorta rings of the C group; this effect was not observed in the vessels of fructose-fed rats. Conclusion: Our findings suggest that the elevated levels of ADMA observed could in part be secondary to the early development of oxidative stress associated with the development of hypertension. [Copyright &y& Elsevier]

Published
2011
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