Rui‐Sheng Wang, Yong Wang, Ling‐Yun Wu, Yu Xia, Luonan Chen,
... in http://intelligent.eic.osaka-sandai.ac.jp/chenen/MDCinfer.htm and http://zhangroup.aporc.org/bioinfo/ ...
Tópico(s): Protein Structure and Dynamics
2007 - BioMed Central | BMC Bioinformatics
Zhenping Li, Shihua Zhang, Yong Wang, Yu Xia, Luonan Chen,
... or http://intelligent.eic.osaka-sandai.ac.jp/chenen/software/MNAligner, or upon request from authors. Contact: ...
Tópico(s): Microbial Metabolic Engineering and Bioproduction
2007 - Oxford University Press | Bioinformatics
Rui‐Sheng Wang, Yong Wang, Yu Xia, Luonan Chen,
... from http://intelligent.eic.osaka-sandai.ac.jp/chenen/TRNinfer.htm Contact: chen@eic.osaka-sandai.ac. ...
Tópico(s): Bioinformatics and Genomic Networks
2007 - Oxford University Press | Bioinformatics
Luonan Chen, Ling‐Yun Wu, Yong Wang, Shihua Zhang, Xiang‐Sun Zhang,
... and http://intelligent.eic.osaka-sandai.ac.jp/chenen/samo.htm . A novel formulation is proposed to ...
Tópico(s): Enzyme Structure and Function
2006 - BioMed Central | BMC Structural Biology
Craig H. Moskowitz, Andrew D. Zelenetz, Tarun Kewalramani, Paul A. Hamlin, Simone Lessac-Chenen, Jane Houldsworth, Adam B. Olshen, R. S. K. Chaganti, Stephen D. Nimer, Julie Teruya‐Feldstein,
Abstract A number of prognostic factors affect outcome in patients with relapsed or primary refractory diffuse large B-cell lymphoma (DLBCL), including refractory disease and the second-line age-adjusted international prognostic index. In de novo DLBCL, the cell of orgin, as determined by expression microarray analysis or immunohistochemistry (IHC), predicts event-free survival (EFS). We evaluated the cell of origin, as well as other pathologic markers of outcome, on the repeat biopsy specimen of 88 ...
Tópico(s): Viral-associated cancers and disorders
2005 - Elsevier BV | Blood
Peizhun Du, Yongchao Liu, Hong Ren, Jing Zhao, Xiaodan Zhang, Rajan S. Patel, Chenen Hu, Jun Gan, Guangjian Huang,
The prognostic significance of CC chemokine receptor type 7 (CCR7) for survival of patients with gastric cancer remains controversial. To investigate the impacts of CCR7 on clinicopathological findings and survival outcome in gastric cancer, we performed a meta-analysis.A comprehensive search in PubMed, Embase, the Cochrane Library, and the CNKI database (1966 to November 2015) was undertaken for relevant studies. The relative risk and hazard ratios with their 95 % confidence intervals were used as ...
Tópico(s): Gastrointestinal Tumor Research and Treatment
2016 - Springer Science+Business Media | Gastric Cancer
Daniel J. Scheeres, Jay W. McMahon, A. S. French, D. N. Brack, Steven R. Chesley, Davide Farnocchia, Yu Takahashi, J. M. Leonard, J. Geeraert, Brian R. Page, Peter G. Antreasian, Kenneth M. Getzandanner, D. D. Rowlands, E. Mazarico, Jeffrey L. Small, D. E. Highsmith, Michael C. Moreau, J. P. Emery, B. Rozitis, Masatoshi Hirabayashi, Paul Sánchez, S. Van wal, P. Tricarico, Ronald‐Louis Ballouz, C. L. Johnson, M. Al Asad, H. C. M. Susorney, O. S. Barnouin, M. G. Daly, J. A. Seabrook, R. W. Gaskell, E. E. Palmer, J. R. Weirich, K. J. Walsh, E. R. Jawin, E. B. Bierhaus, Patrick Michel, W. F. Bottke, M. C. Nolan, H. C. Connolly, D. S. Lauretta, D. E. Highsmith, J. Small, David Vokrouhlický, N. Bowles, Eric Brown, K. L. Donaldson Hanna, T. Warren, C. Brunet, R. A. Chicoine, Serge Desjardins, D. Gaudreau, T. Haltigin, S. Millington-Veloza, A. Rubi, José C. Aponte, Nicolas Gorius, A. W. Lunsford, B. Allen, J. E. Grindlay, D. Guevel, D. Hoak, Jae Sub Hong, D. L. Schrader, J. Bayron, Oleksiy Golubov, Paul Sánchez, J. Stromberg, Masatoshi Hirabayashi, Christine Hartzell, S. Oliver, M. Rascon, A. Harch, J. Joseph, S. W. Squyres, D. C. Richardson, J. P. Emery, L. McGraw, R. R. Ghent, R. P. Binzel, M. Al Asad, C. L. Johnson, L. Philpott, H. C. M. Susorney, E. A. Cloutis, R. D. Hanna, H. C. Connolly, F. Ciceri, A. R. Hildebrand, E.-M. Ibrahim, L. B. Breitenfeld, T. D. Glotch, A. D. Rogers, B. E. Clark, Salvatore Ferrone, Cristina A. Thomas, H. Campins, Y. Fernandez, W. Chang, A. Cheuvront, D. Trang, Shogo Tachibana, Hisayoshi Yurimoto, J. R. Brucato, Giovanni Poggiali, M. Pajola, E. Dotto, E. Mazzotta Epifani, M. K. Crombie, C. Lantz, M. R. M. Izawa, J. de León, J. Licandro, J. L. Rizos, S. J. Clemett, Cristina A. Thomas, S. Van wal, Makoto Yoshikawa, Julie Bellerose, Shyam Bhaskaran, C. Allan Boyles, Steven R. Chesley, C. M. Elder, Davide Farnocchia, A. Harbison, Brett Kennedy, Abigail L. Knight, N. Martinez-Vlasoff, N. Mastrodemos, Timothy McElrath, W. M. Owen, Ryan S. Park, B. Rush, Linda Swanson, Yu Takahashi, D. Velez, K. Yetter, C. Thayer, C. Adam, Peter G. Antreasian, Joel A. Bauman, A. J. Ryan, B. Carcich, M. Corvin, J. Geeraert, J. H. Hoffman, Jason M. Leonard, Erik J. Lessac‐Chenen, A. Levine, James McAdams, Leilah K. McCarthy, Derek Nelson, Brian R. Page, John Pelgrift, Eric Sahr, K. Stakkestad, Dale Stanbridge, Daniel R. Wibben, B. G. Williams, Kenneth E. Williams, Peter Wolff, P. O. Hayne, D. Kubitschek, M. A. Barucci, J. D. P. Deshapriya, S. Fornasier, M. Fulchignoni, P. H. Hasselmann, F. Merlin, A. Praet, E. B. Bierhaus, O. Billett, A. Boggs, Brian Buck, S. Carlson-Kelly, Jorge Cerna, K. Chaffin, E. Church, Michael E. Coltrin, J. Daly, A.F. deGuzman, R. Dubisher, D. Eckart, D. Ellis, P. Falkenstern, A. T. Fisher, Mark Fisher, P. Fleming, K. Fortney, S. Francis, S. Freund, S. Gonzales, P. Haas, A. Hasten, D. Hauf, A. Hilbert, D. Howell, F. Jaen, Nimesh Jayakody, M. Jenkins, K. Johnson, Mathilde Lefevre, H. Ma, Courtney Mario, Kimberly K. Martin, C. May, M. McGee, B.I. Miller, C. Miller, Graham Miller, A. Mirfakhrai, E. Muhle, Chris Norman, Ryan Olds, C. L. Parish, M. Ryle, M. Schmitzer, Paul S. Sherman, M. Skeen, M. Susak, B. Sutter, Quoc Phuong Tran, Chris Welch, RP Witherspoon, J. A. Wood, J. Zareski, M. Arvizu-Jakubicki, E. Asphaug, E. Audi, R.-L. Ballouz, R. Bandrowski, K. J. Becker, T. L. Becker, S. P. Bendall, C. A. Bennett, H. Bloomenthal, Deborah Blum, W. V. Boynton, J. Brodbeck, K. N. Burke, M. Chojnacki, A. Colpo, J. L. Contreras, J. A. Cutts, C. Drouet d’Aubigny, David A. Dean, D. N. DellaGiustina, B. Diallo, D. Drinnon, Kristofer Drozd, H. Enos, R. Enos, C. Fellows, T. Ferro, Matthew R. Fisher, G. Fitzgibbon, Mike Fitzgibbon, J. Forelli, T. Forrester, I. Galinsky, R. García, Andrew Gardner, D. R. Golish, Namrah Habib, D. Hamara, D. Hammond, Kevin J. Hanley, K. Harshman, C. W. Hergenrother, Katja Herzog, D. H. Hill, C. Hoekenga, S. Hooven, E. S. Howell, E. Huettner, A. Janakus, J. H. Jones, Theodore Kareta, John Kidd, K. Kingsbury, S. S. Balram‐Knutson, L. Koelbel, Josef Kreiner, Diane Lambert, D. S. Lauretta, Collin Lewin, B. Lovelace, M. Loveridge, Manuel Luján, C. Maleszewski, Renu Malhotra, K. Marchese, E. McDonough, N. Mogk, V. Morrison, E. Morton,
The top-shaped morphology characteristic of asteroid (101955) Bennu, often found among fast-spinning asteroids and binary asteroid primaries, may have contributed substantially to binary asteroid formation. Yet a detailed geophysical analysis of this morphology for a fast-spinning asteroid has not been possible prior to the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission. Combining the measured Bennu mass and shape obtained during the ...
Nature Portfolio
V. E. Hamilton, A. A. Simon, P. R. Christensen, Dennis C. Reuter, B. E. Clark, M. A. Barucci, N. E. Bowles, W. V. Boynton, J. R. Brucato, E. A. Cloutis, H. C. Connolly, K. L. Donaldson Hanna, Joshua P. Emery, H. Enos, S. Fornasier, C. W. Haberle, R. D. Hanna, E. S. Howell, H. H. Kaplan, L. P. Keller, C. Lantz, Jian‐Yang Li, L. F. Lim, T. J. McCoy, F. Merlin, M. C. Nolan, A. Praet, B. Rozitis, Scott A. Sandford, D. L. Schrader, Cristina A. Thomas, Xiao‐Duan Zou, D. S. Lauretta, D. E. Highsmith, Jeffrey L. Small, D. Vokrouhlický, N. E. Bowles, Eric Brown, K. L. Donaldson Hanna, T. Warren, C. Brunet, R. A. Chicoine, Serge Desjardins, D. Gaudreau, T. Haltigin, S. Millington-Veloza, A. Rubi, José C. Aponte, Nicolas Gorius, A. W. Lunsford, B. Allen, J. E. Grindlay, D. Guevel, D. Hoak, Jae Sub Hong, D. L. Schrader, J. Bayron, Oleksiy Golubov, Paul Sánchez, J. Stromberg, Masatoshi Hirabayashi, Christine Hartzell, S. Oliver, M. Rascon, A. Harch, J. Joseph, S. W. Squyres, D. C. Richardson, Joshua P. Emery, L. McGraw, R. R. Ghent, Richard P. Binzel, M. Al Asad, C. L. Johnson, L. Philpott, H. C. M. Susorney, E. A. Cloutis, R. D. Hanna, H. C. Connolly, F. Ciceri, A. R. Hildebrand, E.-M. Ibrahim, L. B. Breitenfeld, T. D. Glotch, A. D. Rogers, B. E. Clark, Salvatore Ferrone, Cristina A. Thomas, H. Campins, Y. R. Fernández, W. Chang, A. Cheuvront, D. Trang, Shogo Tachibana, Hisayoshi Yurimoto, J. R. Brucato, Giovanni Poggiali, M. Pajola, E. Dotto, E. Mazzotta Epifani, M. K. Crombie, C. Lantz, M. R. M. Izawa, J. de León, J. Licandro, J. L. Rizos, S. J. Clemett, Cristina A. Thomas, S. Van wal, Makoto Yoshikawa, Julie Bellerose, Shyam Bhaskaran, C. Allan Boyles, Steven R. Chesley, C. M. Elder, Davide Farnocchia, A. Harbison, Brook S. Kennedy, Abigail L. Knight, N. Martinez-Vlasoff, N. Mastrodemos, Timothy McElrath, W. M. Owen, R. Park, B. Rush, Linda Swanson, Yu Takahashi, D. Velez, K. Yetter, C. Thayer, C. Adam, Peter G. Antreasian, Joel A. Bauman, A. J. Ryan, B. Carcich, M. Corvin, J. Geeraert, J. H. Hoffman, Jason M. Leonard, Erik J. Lessac‐Chenen, A. Levine, James McAdams, Leilah K. McCarthy, Derek Nelson, Brian R. Page, John Pelgrift, Eric Sahr, K. Stakkestad, Dale Stanbridge, Daniel R. Wibben, B. Williams, Kenneth E. Williams, Peter Wolff, P. O. Hayne, D. Kubitschek, M. A. Barucci, J. D. P. Deshapriya, S. Fornasier, M. Fulchignoni, P. H. Hasselmann, F. Merlin, A. Praet, E. B. Bierhaus, O. Billett, A. Boggs, Brian Buck, S. Carlson-Kelly, Jorge Cerna, K. Chaffin, E. Church, Michael E. Coltrin, J. Daly, A.F. deGuzman, R. Dubisher, D. Eckart, D. Ellis, P. Falkenstern, A. T. Fisher, Mark Fisher, P. Fleming, K. Fortney, S. Francis, S. Freund, S. Gonzales, P. Haas, A. Hasten, D. Hauf, A. Hilbert, D. Howell, F. Jaen, Nimesh Jayakody, M. Jenkins, K. Johnson, Mathilde Lefevre, H. Ma, Courtney Mario, Kimberly K. Martin, C. May, M. McGee, B.I. Miller, C. Miller, Graham Miller, A. Mirfakhrai, E. Muhle, Chris Norman, Ryan Olds, C. L. Parish, M. Ryle, M. Schmitzer, Paul S. Sherman, M. Skeen, M. Susak, B. Sutter, Quoc Phuong Tran, Chris Welch, RP Witherspoon, John A. Wood, J. Zareski, M. Arvizu-Jakubicki, Erik Asphaug, E. Audi, R.-L. Ballouz, R. Bandrowski, K. J. Becker, T. L. Becker, S. P. Bendall, C. A. Bennett, H. Bloomenthal, Deborah Blum, W. V. Boynton, J. Brodbeck, K. N. Burke, M. Chojnacki, A. Colpo, J. L. Contreras, J. A. Cutts, C. Drouet d’Aubigny, David A. Dean, D. N. DellaGiustina, B. Diallo, D. Drinnon, Kristofer Drozd, H. Enos, R. Enos, C. Fellows, T. Ferro, Matthew R. Fisher, G. Fitzgibbon, Mike Fitzgibbon, J. Forelli, T. Forrester, I. Galinsky, R. García, Andrew Gardner, D. R. Golish, Namrah Habib, D. Hamara, D. Hammond, Kevin J. Hanley, K. Harshman, C. W. Hergenrother, Katja Herzog, D. H. Hill, C. Hoekenga, S. Hooven, E. S. Howell, E. Huettner, A. Janakus, J. H. Jones, Theodore Kareta, John Kidd, K. Kingsbury, S. S. Balram‐Knutson, L. Koelbel, Josef Kreiner, Diane Lambert, D. S. Lauretta, Collin Lewin, B. Lovelace, M. Loveridge, Manuel Luján, C. Maleszewski, Renu Malhotra, K. Marchese, E. McDonough, N. Mogk, V. Morrison, E. Morton, Roberto P. Muñoz, Jon Nelson, M. C. Nolan, J. Padilla, R. Pennington, Anjani T. Polit, N. Ramos, V. Reddy,
Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu in the form of a near-infrared absorption near 2.7 μm and thermal infrared spectral features that are most similar to those of aqueously altered CM carbonaceous chondrites. We observe these spectral features across the surface of Bennu, and there is no evidence ...
Nature Portfolio
C. W. Hergenrother, C. Maleszewski, M. C. Nolan, Jian‐Yang Li, C. Drouet d’Aubigny, F. C. Shelly, E. S. Howell, Theodore Kareta, M. R. M. Izawa, M. A. Barucci, E. B. Bierhaus, H. Campins, Steven R. Chesley, B. E. Clark, E. Christensen, D. N. DellaGiustina, S. Fornasier, D. R. Golish, Christine Hartzell, B. Rizk, Daniel J. Scheeres, Peter H. Smith, Xiao‐Duan Zou, D. S. Lauretta, D. E. Highsmith, Jeffrey L. Small, David Vokrouhlický, N. E. Bowles, Eric Brown, K. L. Donaldson Hanna, T. Warren, C. Brunet, R. A. Chicoine, Serge Desjardins, D. Gaudreau, T. Haltigin, S. Millington-Veloza, A. Rubi, José C. Aponte, Nicolas Gorius, Allen Lunsford, B. Allen, J. E. Grindlay, D. Guevel, D. Hoak, Jaesub Hong, D. L. Schrader, J. Bayron, Oleksiy Golubov, Paul Sánchez, J. Stromberg, Masatoshi Hirabayashi, Christine Hartzell, S. Oliver, M. Rascon, A. Harch, J. Joseph, S. W. Squyres, D. C. Richardson, Joshua P. Emery, L. McGraw, R. R. Ghent, Richard P. Binzel, M. Al Asad, C. L. Johnson, L. Philpott, H. C. M. Susorney, E. A. Cloutis, R. D. Hanna, H. C. Connolly, F. Ciceri, A. R. Hildebrand, E.-M. Ibrahim, L. B. Breitenfeld, T. D. Glotch, A. D. Rogers, B. E. Clark, Salvatore Ferrone, Cristina A. Thomas, H. Campins, Y. R. Fernández, W. Chang, A. Cheuvront, D. Trang, Shogo Tachibana, Hisayoshi Yurimoto, J. R. Brucato, Giovanni Poggiali, M. Pajola, E. Dotto, E. Mazzotta Epifani, M. K. Crombie, C. Lantz, M. R. M. Izawa, J. de León, J. Licandro, J. L. Rizos, S. J. Clemett, Cristina A. Thomas, S. Van wal, Makoto Yoshikawa, Julie Bellerose, S. Bhaskaran, C. Allan Boyles, Steven R. Chesley, C. M. Elder, Davide Farnocchia, A. Harbison, Brook S. Kennedy, Abigail L. Knight, N. Martinez-Vlasoff, Nickolaos Mastrodemos, Timothy McElrath, W. M. Owen, R. Park, B. Rush, Linda Swanson, Y. Takahashi, D. Velez, K. Yetter, C. Thayer, C. Adam, Peter G. Antreasian, Joel A. Bauman, A. J. Ryan, B. Carcich, M. Corvin, J. Geeraert, J. H. Hoffman, Jason M. Leonard, Erik J. Lessac‐Chenen, A. Levine, James McAdams, Leilah K. McCarthy, Derek Nelson, Brian R. Page, John Pelgrift, Eric Sahr, K. Stakkestad, Dale Stanbridge, Daniel R. Wibben, B. G. Williams, Kenneth E. Williams, Peter Wolff, P. O. Hayne, D. Kubitschek, M. A. Barucci, J. D. P. Deshapriya, S. Fornasier, M. Fulchignoni, P. H. Hasselmann, F. Merlin, A. Praet, E. B. Bierhaus, O. Billett, A. Boggs, Brian Buck, S. Carlson-Kelly, Jorge Cerna, K. Chaffin, E. Church, Michael E. Coltrin, J. Daly, A.F. deGuzman, R. Dubisher, D. Eckart, D. Ellis, P. Falkenstern, A. T. Fisher, Mark Fisher, Paul J. Fleming, K. Fortney, S. Francis, S. Freund, S. Gonzales, P. Haas, A. Hasten, D. Hauf, A. Hilbert, D. Howell, F. Jaen, Nimesh Jayakody, M. Jenkins, K. Johnson, Mathilde Lefevre, H. Ma, Courtney Mario, Kimberly K. Martin, C. May, M. McGee, B.I. Miller, C. Miller, Graham Miller, A. Mirfakhrai, E. Muhle, Chris Norman, Ryan Olds, C. L. Parish, M. Ryle, M. Schmitzer, Paul S. Sherman, M. Skeen, M. Susak, B. Sutter, Quoc Phuong Tran, Chris Welch, RP Witherspoon, John A. Wood, J. Zareski, M. Arvizu-Jakubicki, Erik Asphaug, E. Audi, Ronald‐Louis Ballouz, R. Bandrowski, K. J. Becker, K. J. Becker, S. P. Bendall, C. A. Bennett, H. Bloomenthal, Deborah Blum, W. V. Boynton, J. Brodbeck, K. N. Burke, Matt Chojnacki, A. Colpo, J. L. Contreras, J. A. Cutts, C. Drouet d’Aubigny, David A. Dean, D. N. DellaGiustina, B. Diallo, D. Drinnon, Kristofer Drozd, H. Enos, R. Enos, C. Fellows, T. Ferro, Matthew R. Fisher, G. Fitzgibbon, Mike Fitzgibbon, J. Forelli, T. Forrester, I. Galinsky, R. García, Andrew Gardner, D. R. Golish, Namrah Habib, D. Hamara, D. Hammond, Kevin J. Hanley, K. Harshman, C. W. Hergenrother, Katja Herzog, D. H. Hill, C. Hoekenga, S. Hooven, E. S. Howell, E. Huettner, A. Janakus, J. H. Jones, Theodore Kareta, John Kidd, K. Kingsbury, S. S. Balram‐Knutson, L. Koelbel, Josef Kreiner, Diane Lambert, D. S. Lauretta, Collin Lewin, B. Lovelace, M. Loveridge, Manuel Luján, C. Maleszewski, Renu Malhotra, K. Marchese, E. McDonough, N. Mogk, V. Morrison, E. Morton, Roberto P. Muñoz, Jon Nelson, M. C. Nolan, J. Padilla, R. Pennington, Anjani T. Polit, N. Ramos, V. Reddy, M. Riehl, B. Rizk, H. L. Roper, S. Salazar, S. R. Schwartz, Sanford Selznick, N. Shultz, Peter H. Smith, S. Stewart,
During its approach to asteroid (101955) Bennu, NASA's Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft surveyed Bennu's immediate environment, photometric properties, and rotation state. Discovery of a dusty environment, a natural satellite, or unexpected asteroid characteristics would have had consequences for the mission's safety and observation strategy. Here we show that spacecraft observations during this period were highly sensitive ...
Nature Portfolio
D. S. Lauretta, C. W. Hergenrother, Steven R. Chesley, Jason M. Leonard, John Pelgrift, Coralie D. Adam, M. Al Asad, Peter G. Antreasian, Ronald‐Louis Ballouz, K. J. Becker, C. A. Bennett, Brent J. Bos, W. F. Bottke, M. Brozović, H. Campins, H. C. Connolly, M. G. Daly, A. B. Davis, J. de León, D. N. DellaGiustina, C. Drouet d’Aubigny, Jason P. Dworkin, Joshua P. Emery, Davide Farnocchia, D. P. Glavin, D. R. Golish, Christine Hartzell, Robert A. Jacobson, E. R. Jawin, Peter Jenniskens, John Kidd, Erik J. Lessac‐Chenen, Jian‐Yang Li, G. Libourel, J. Licandro, Andrew J. Liounis, C. Maleszewski, C. Manzoni, B. May, Leilah K. McCarthy, Jay W. McMahon, Patrick Michel, J. L. Molaro, Michael C. Moreau, Derek Nelson, W. M. Owen, B. Rizk, H. L. Roper, B. Rozitis, Eric Sahr, Daniel J. Scheeres, J. A. Seabrook, Sanford Selznick, Yu Takahashi, Florian Thuillet, P. Tricarico, David Vokrouhlický, C. W. V. Wolner,
Active asteroids are those that show evidence of ongoing mass loss. We report repeated instances of particle ejection from the surface of (101955) Bennu, demonstrating that it is an active asteroid. The ejection events were imaged by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) spacecraft. For the three largest observed events, we estimated the ejected particle velocities and sizes, event times, source regions, and energies. We also determined ...
Tópico(s): Astrophysics and Star Formation Studies
2019 - American Association for the Advancement of Science | Science
S. A. Stern, H. A. Weaver, J. R. Spencer, C. B. Olkin, G. R. Gladstone, W. M. Grundy, J. M. Moore, D. P. Cruikshank, H. A. Elliott, W. B. McKinnon, J. W. Parker, A. Verbiscer, L. A. Young, David Aguilar, Joshua Albers, T. Andert, John P. Andrews, F. Bagenal, M. E. Banks, Brian Bauer, Jeremy Bauman, Katie Bechtold, C. B. Beddingfield, Neda Behrooz, K. Beißer, Susan D. Benecchi, E. Bernardoni, R. A. Beyer, S. Bhaskaran, C. J. Bierson, Richard P. Binzel, Emma Birath, M. K. Bird, Dylan Boone, Alice Bowman, V. J. Bray, D. T. Britt, L. E. Brown, Matthew R. Buckley, M. W. Buie, B. J. Buratti, Laura M. Burke, Stewart Bushman, B. Carcich, A. Chaikin, Carrie L. Chavez, A. F. Cheng, Edwin Colwell, Steven J. Conard, M. P. Conner, C. A. Conrad, J. C. Cook, Stanley B. Cooper, O. S. Custodio, C. M. Dalle Ore, Christopher C. DeBoy, Priya Dharmavaram, Rajani D. Dhingra, G. Dunn, A. M. Earle, A. F. Egan, J. Eisig, M. R. El‐Maarry, Carl Engelbrecht, B. L. Enke, Carl J. Ercol, E. Fattig, Chelsea L. Ferrell, T. Finley, J. Firer, Joel T. Fischetti, W. M. Folkner, M. N. Fosbury, Glen H. Fountain, J. M. Freeze, Leila Gabasova, L. S. Glaze, James Green, Gabrielle Griffith, Yanping Guo, M. Hahn, D. W. Hals, Douglas P. Hamilton, Sarah A. Hamilton, J. Hanley, A. Harch, Kristen Harmon, H. M. Hart, J. R. Hayes, Christopher B. Hersman, M. E. Hill, Tracy A. Hill, Jason D. Hofgartner, Mark E. Holdridge, M. Horányi, A. Hosadurga, A. D. Howard, C. J. A. Howett, S. Jaskulek, Donald E. Jennings, J.R. Jensen, Melissa R. Jones, H. K. Kang, D. J. Katz, D. E. Kaufmann, J. J. Kavelaars, J. T. Keane, G. P. Keleher, M. J. Kinczyk, M. C. Kochte, P. Kollmann, S. M. Krimigis, Gerhard Kruizinga, David Y. Kusnierkiewicz, M. S. Lahr, Tod R. Lauer, George Lawrence, J. E. Lee, Erik J. Lessac‐Chenen, I. R. Linscott, C. M. Lisse, Allen Lunsford, Declan Mages, V. A. Mallder, N. Martin, B. May, D. J. McComas, R. L. McNutt, Doug Mehoke, Thomas Mehoke, Derek Nelson, Hien D. Nguyen, Jorge I. Núñez, A. Ocampo, W. M. Owen, G. K. Oxton, A. H. Parker, M. Pätzold, John Pelgrift, F. Pelletier, Jon P. Pineau, M. Piquette, Simon B. Porter, S. Protopapa, É. Quirico, J. Redfern, Alysen Regiec, H. J. Reitsema, Dennis C. Reuter, D. C. Richardson, Joseph E. Riedel, M. A. Ritterbush, S. J. Robbins, D. J. Rodgers, Gabe Rogers, D. Rose, Paul E. Rosendall, Kirby Runyon, M. G. Ryschkewitsch, Magda Saina, Michael J. Salinas, P. Schenk, J. Scherrer, Wayne Schlei, B. Schmitt, Daniel Schultz, D. C. Schurr, F. Scipioni, Rebecca Sepan, Richard Shelton, M. R. Showalter, M. Simon, K. N. Singer, E. W. Stahlheber, Dale Stanbridge, J. A. Stansberry, A. J. Steffl, D. F. Strobel, M. M. Stothoff, T. Stryk, Jeffrey Stuart, M. E. Summers, Mark B. Tapley, Anthony H. Taylor, H. W. Taylor, R. M. Tedford, H. B. Throop, L. S. Turner, O. M. Umurhan, J. Van Eck, D. Velez, M. H. Versteeg, Michael A. Vincent, R. Webbert, S. Weidner, Gerald Weigle, Johan Wendel, O. L. White, Karl Whittenburg, B. G. Williams, Kenneth E. Williams, Stephen Williams, Helene Winters, A. M. Zangari, T. H. Zurbuchen,
The Kuiper Belt is a distant region of the Solar System. On 1 January 2019, the New Horizons spacecraft flew close to (486958) 2014 MU69, a Cold Classical Kuiper Belt Object, a class of objects that have never been heated by the Sun and are therefore well preserved since their formation. Here we describe initial results from these encounter observations. MU69 is a bi-lobed contact binary with a flattened shape, discrete geological units, and noticeable albedo heterogeneity. However, there is little ...
Tópico(s): Stellar, planetary, and galactic studies
2019 - American Association for the Advancement of Science | Science
D. N. DellaGiustina, Joshua P. Emery, D. R. Golish, B. Rozitis, C. A. Bennett, K. N. Burke, Ronald‐Louis Ballouz, K. J. Becker, P. R. Christensen, C. Drouet d’Aubigny, V. E. Hamilton, Dennis C. Reuter, B. Rizk, A. A. Simon, Erik Asphaug, J. L. Bandfield, O. S. Barnouin, M. A. Barucci, E. B. Bierhaus, Richard P. Binzel, W. F. Bottke, N. Bowles, H. Campins, B. C. Clark, B. E. Clark, H. C. Connolly, M. G. Daly, J. de León, M. Delbo’, J. D. P. Deshapriya, C. M. Elder, S. Fornasier, C. W. Hergenrother, E. S. Howell, E. R. Jawin, H. H. Kaplan, Theodore Kareta, L. Le Corre, J.-Y. Li, J. Licandro, L. F. Lim, Patrick Michel, M. C. Nolan, M. C. Nolan, M. Pajola, Marcel Popescu, J. L. Rizos Garcia, A. Ryan, S. R. Schwartz, N. Shultz, M. A. Siegler, P. H. Smith, Eri Tatsumi, C. A. Thomas, K. J. Walsh, C. W. V. Wolner, X.-D. Zou, Marc Bernacki, D. E. Highsmith, Jeffrey L. Small, David Vokrouhlický, N. Bowles, Eric Brown, K. L. Donaldson Hanna, T. Warren, C. Brunet, R. A. Chicoine, Serge Desjardins, D. Gaudreau, T. Haltigin, S. Millington-Veloza, A. Rubi, José C. Aponte, Nicolas Gorius, Allen Lunsford, B. Allen, J. E. Grindlay, D. Guevel, D. Hoak, Jaesub Hong, D. L. Schrader, J. Bayron, Oleksiy Golubov, Paul Sánchez, J. Stromberg, Masatoshi Hirabayashi, Christine Hartzell, S. Oliver, M. Rascon, A. Harch, J. Joseph, S. W. Squyres, D. C. Richardson, Joshua P. Emery, L. McGraw, R. R. Ghent, Richard P. Binzel, M. Al Asad, C. L. Johnson, L. Philpott, H. C. M. Susorney, E. A. Cloutis, R. D. Hanna, H. C. Connolly, F. Ciceri, A. R. Hildebrand, E.-M. Ibrahim, L. B. Breitenfeld, T. D. Glotch, A. D. Rogers, B. E. Clark, Salvatore Ferrone, C. A. Thomas, H. Campins, Y. R. Fernández, W. Chang, A. Cheuvront, D. Trang, Shogo Tachibana, Hisayoshi Yurimoto, J. R. Brucato, Giovanni Poggiali, M. Pajola, E. Dotto, E. Mazzotta Epifani, M. K. Crombie, C. Lantz, M. R. M. Izawa, J. de León, J. Licandro, J. L. Rizos Garcia, S. J. Clemett, Cristina A. Thomas, S. Van wal, M. Yoshikawa, Julie Bellerose, S. Bhaskaran, C. Allan Boyles, Steven R. Chesley, C. M. Elder, Davide Farnocchia, A. Harbison, Brett Kennedy, Abigail L. Knight, N. Martinez-Vlasoff, N. Mastrodemos, Timothy McElrath, W. M. Owen, R. Park, B. Rush, Linda Swanson, Yoshinori Takahashi, D. Velez, K. Yetter, C. Thayer, C. Adam, Peter G. Antreasian, Joel A. Bauman, A. J. Ryan, B. Carcich, M. Corvin, J. Geeraert, J. H. Hoffman, J. M. Leonard, Erik J. Lessac‐Chenen, A. Levine, James McAdams, Leilah K. McCarthy, Derek Nelson, Brian R. Page, John Pelgrift, Eric Sahr, K. Stakkestad, Dale Stanbridge, Daniel R. Wibben, B. G. Williams, Kenneth E. Williams, Peter Wolff, P. O. Hayne, D. Kubitschek, M. A. Barucci, J. D. P. Deshapriya, S. Fornasier, M. Fulchignoni, P. H. Hasselmann, F. Merlin, A. Praet, E. B. Bierhaus, O. Billett, A. Boggs, Brian Buck, S. Carlson-Kelly, Jorge Cerna, K. Chaffin, E. Church, Michael E. Coltrin, J. Daly, A.F. deGuzman, R. Dubisher, D. Eckart, D. Ellis, P. Falkenstern, A. T. Fisher, Mark Fisher, Paul J. Fleming, K. Fortney, S. Francis, S. Freund, S. Gonzales, P. Haas, A. Hasten, D. Hauf, A. Hilbert, D. Howell, F. Jaen, Nimesh Jayakody, M. Jenkins, K. Johnson, Mathilde Lefevre, H. Ma, Courtney Mario, Kimberly K. Martin, C. May, M. McGee, B.I. Miller, C. Miller, Graham Miller, A. Mirfakhrai, E. Muhle, Chris Norman, Ryan Olds, C. L. Parish, M. Ryle, M. Schmitzer, Paul S. Sherman, M. Skeen, M. Susak, B. Sutter, Quoc Phuong Tran, Chris Welch, RP Witherspoon, J. A. Wood, J. Zareski, M. Arvizu-Jakubicki, Erik Asphaug, E. Audi, Ronald‐Louis Ballouz, R. Bandrowski, K. J. Becker, K. J. Becker, S. P. Bendall, C. A. Bennett, H. Bloomenthal, Deborah Blum, W. V. Boynton, J. Brodbeck, K. N. Burke, Matt Chojnacki, A. Colpo, J. L. Contreras, J. A. Cutts, C. Drouet d’Aubigny, David A. Dean, D. N. DellaGiustina, B. Diallo, D. Drinnon, Kristofer Drozd, H. Enos, R. Enos, C. Fellows, T. Ferro, Matthew R. Fisher, G. Fitzgibbon, Mike Fitzgibbon, J. Forelli, T. Forrester, I. Galinsky, R. García, A. Gardner, D. R. Golish, Namrah Habib, D. Hamara, D. Hammond, Kevin J. Hanley, K. Harshman, C. W. Hergenrother, Katja Herzog, D. H. Hill, C. Hoekenga, S. Hooven, E. S. Howell, E. Huettner, A. Janakus, J. H. Jones, Theodore Kareta, John Kidd,
Establishing the abundance and physical properties of regolith and boulders on asteroids is crucial for understanding the formation and degradation mechanisms at work on their surfaces. Using images and thermal data from NASA’s Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft, we show that asteroid (101955) Bennu’s surface is globally rough, dense with boulders, and low in albedo. The number of boulders is surprising given Bennu’s moderate ...
Nature Portfolio
John Pelgrift, Erik J. Lessac‐Chenen, Coralie D. Adam, Jason M. Leonard, Derek Nelson, Leilah K. McCarthy, Eric Sahr, Andrew J. Liounis, Michael C. Moreau, Brent J. Bos, C. W. Hergenrother, D. S. Lauretta,
Abstract OSIRIS‐REx began observing particle ejection events shortly after entering orbit around near‐Earth asteroid (101955) Bennu in January 2019. For some of these events, the only observations of the ejected particles come from the first two images taken immediately after the event by OSIRIS‐REx's NavCam 1 imager. Without three or more observations of each particle, traditional orbit determination is not possible. However, by assuming that the particles all ejected at the same time and location ...
Tópico(s): Solar and Space Plasma Dynamics
2020 - American Geophysical Union | Earth and Space Science
Steven R. Chesley, A. S. French, A. B. Davis, Robert A. Jacobson, M. Brozović, Davide Farnocchia, Sanford Selznick, Andrew J. Liounis, C. W. Hergenrother, Michael C. Moreau, John Pelgrift, Erik J. Lessac‐Chenen, J. L. Molaro, Ryan S. Park, B. Rozitis, Daniel J. Scheeres, Yu Takahashi, David Vokrouhlický, C. W. V. Wolner, Coralie D. Adam, Brent J. Bos, E. Christensen, Joshua P. Emery, Jason M. Leonard, Jay W. McMahon, M. C. Nolan, F. C. Shelly, D. S. Lauretta,
Abstract We analyze the trajectories of 313 particles seen in the near‐Bennu environment between December 2018 and September 2019. Of these, 65% follow suborbital trajectories, 20% undergo more than one orbital revolution around the asteroid, and 15% directly escape on hyperbolic trajectories. The median lifetime of these particles is ∼6 hr. The trajectories are sensitive to Bennu's gravitational field, which allows us to reliably estimate the spherical harmonic coefficients through degree 8 and ...
Tópico(s): Gamma-ray bursts and supernovae
2020 - Wiley | Journal of Geophysical Research Planets
C. W. Hergenrother, C. Maleszewski, Jian‐Yang Li, M. Pajola, Steven R. Chesley, A. S. French, A. B. Davis, John Pelgrift, Jason M. Leonard, F. C. Shelly, Andrew J. Liounis, K. J. Becker, S. S. Balram‐Knutson, R. García, Theodore Kareta, Coralie D. Adam, K. Alkiek, Brent J. Bos, M. Brozović, K. N. Burke, E. Christensen, B. E. Clark, D. N. DellaGiustina, C. Drouet d’Aubigny, Davide Farnocchia, E. S. Howell, Robert A. Jacobson, John Kidd, Erik J. Lessac‐Chenen, Robert Melikyan, M. C. Nolan, Ryan S. Park, Sanford Selznick, B. Rizk, D. S. Lauretta,
Abstract Near‐Earth asteroid (101955) Bennu is an active asteroid experiencing mass loss in the form of ejection events emitting up to hundreds of millimeter‐ to centimeter‐scale particles. The close proximity of the Origins, Spectral Interpretations, Resource Identification, and Security–Regolith Explorer spacecraft enabled monitoring of particles for a 10‐month period encompassing Bennu's perihelion and aphelion. We found 18 multiparticle ejection events, with masses ranging from near zero to hundreds ...
Tópico(s): Planetary Science and Exploration
2020 - Wiley | Journal of Geophysical Research Planets
Anbo Meng, Zikang Xian, Hao Yin, Jianqiang Luo, Xiaolin Wang, Hai‐Tao Zhang, Jiayu Rong, Chen Li, Zhenbo Wu, Zhifeng Xie, Zhan Zhang, Chenen Wang, Yingjun Chen,
Randomness and intermittency are common challenges in wind power prediction. Most studies focus on randomness but usually ignore the intermittency of wind power that leads to sample imbalance and impairs prediction accuracy. To address the sample imbalance problem, a segment imbalance regression (SIR) method with crisscross optimization (CSO) is proposed to proactively dig and utilize the imbalance nature of samples. By investigating the interactions among adjacent samples, SIR is employed to adaptively ...
Tópico(s): Power System Reliability and Maintenance
2023 - Elsevier BV | Energy Conversion and Management
Chenen Ma, Lina Madaniyazi, Yang Xie,
China is implementing intensive policies on electric vehicles to control air pollution in urban regions, especially the Beijing-Tianjin-Hebei (BTH) region, one of the most polluted areas in China. The development of electric vehicles will lead to an increase in electricity demand. Because electricity is mostly generated by thermal power in China, primary energy consumption will also increase. This study sets two scenarios: with the electric vehicle policies scenario (REN) and without the electric ...
Tópico(s): Energy and Environment Impacts
2021 - Multidisciplinary Digital Publishing Institute | International Journal of Environmental Research and Public Health
Anbo Meng, Zibin Zhu, Weisi Deng, Zuhong Ou, Shan Lin, Chenen Wang, Xuancong Xu, Xiaolin Wang, Hao Yin, Jianqiang Luo,
Tópico(s): Electric Power System Optimization
2022 - Elsevier BV | Energy
Anbo Meng, Shu Chen, Zuhong Ou, Jianhua Xiao, Jianfeng Zhang, Shun Chen, Zheng Zhang, Ruduo Liang, Zhan Zhang, Zikang Xian, Chenen Wang, Hao Yin, Baiping Yan,
The accuracy and stability of wind power forecasting are very important for the operation of wind farms. However, for the newly built wind farms without sufficient historical data, it is difficult to make a more accurate prediction. Therefore, it is of great significance to explore a method to improve the wind power prediction accuracy with no sufficient historical data available. In this paper, a novel prediction model is proposed to address the few-shot learning problem of wind power prediction ...
Tópico(s): Neural Networks and Applications
2022 - Elsevier BV | Energy
D. S. Lauretta, Coralie D. Adam, Alicia J. Allen, Ronald‐Louis Ballouz, O. S. Barnouin, K. J. Becker, T. L. Becker, C. A. Bennett, E. B. Bierhaus, Brent J. Bos, Rich Burns, H. Campins, Yuichiro Cho, P. R. Christensen, E. Church, B. E. Clark, H. C. Connolly, M. G. Daly, D. N. DellaGiustina, C. Drouet d’Aubigny, Joshua P. Emery, H. Enos, Sandra Freund Kasper, J. B. Garvin, Kenneth M. Getzandanner, D. R. Golish, V. E. Hamilton, C. W. Hergenrother, H. H. Kaplan, L. P. Keller, Erik J. Lessac‐Chenen, Andrew J. Liounis, H. Ma, Leilah K. McCarthy, Brennen Miller, Michael C. Moreau, Tomokatsu Morota, Derek Nelson, J. O. Nolau, Ryan Olds, M. Pajola, John Pelgrift, Anjani T. Polit, M. A. Ravine, Dennis C. Reuter, B. Rizk, B. Rozitis, A. J. Ryan, Eric Sahr, Naoya Sakatani, J. A. Seabrook, Sanford Selznick, Michael Skeen, A. A. Simon, Seiji Sugita, K. J. Walsh, M. M. Westermann, C. W. V. Wolner, Koki Yumoto,
Carbonaceous asteroids, such as (101955) Bennu, preserve material from the early Solar System, including volatile compounds and organic molecules. We report spacecraft imaging and spectral data collected during and after retrieval of a sample from Bennu’s surface. The sampling event mobilized rocks and dust into a debris plume, excavating a 9-meter-long elliptical crater. This exposed material is darker, spectrally redder, and more abundant in fine particulates than the original surface. The bulk ...
Tópico(s): Isotope Analysis in Ecology
2022 - American Association for the Advancement of Science | Science
Jason M. Leonard, Coralie D. Adam, John Pelgrift, Erik J. Lessac‐Chenen, Derek Nelson, Peter G. Antreasian, Andrew J. Liounis, Michael C. Moreau, C. W. Hergenrother, Steven R. Chesley, M. C. Nolan, D. S. Lauretta,
The OSIRIS-REx mission has observed multiple instances of particles being ejected from the surface of near-Earth asteroid (101955) Bennu. The ability to quickly identify the particle trajectories and origins is necessary following a particle ejection event. Using proven initial orbit determination techniques, we can rapidly estimate particle trajectories and ejection locations. We present current results pertaining to the identification of particle tracks, an evaluation of the estimated orbits and ...
Tópico(s): Space Satellite Systems and Control
2020 - American Geophysical Union | Earth and Space Science
Anbo Meng, Hai‐Tao Zhang, Hao Yin, Zikang Xian, Shu Chen, Zibin Zhu, Zheng Zhang, Jiayu Rong, Chen Li, Chenen Wang, Zhenbo Wu, Weisi Deng, Jianqiang Luo, Xiaolin Wang,
Tópico(s): Cancer-related molecular mechanisms research
2023 - Elsevier BV | Energy
Xiepeng Lin, Wenxia Gao, Chenen Li, Jiuxi Chen, Chen Yang, Huayue Wu,
Nano-sized excipients were used in solid dispersions (SD) to enhance the dissolution rate of poorly water-soluble drug in this study. Nano-sized flake carboxymethyl cassava starch (CMCS) was firstly synthesized under ultrasonic irradiation. Then acetylsalicylic acid (ASA) was selected as water insoluble drug model to prepare solid dispersions using three different kinds of excipients. SD1 was prepared using native cassava starch as carrier. SD2 and SD3 were prepared using nano-sized CMCS (degree substitution, ...
Tópico(s): Crystallization and Solubility Studies
2011 - Elsevier BV | International Journal of Pharmaceutics
Harold F. Levison, S. Marchi, Keith Noll, J. R. Spencer, Thomas S. Statler, J. F. Bell, E. B. Bierhaus, Richard P. Binzel, W. F. Bottke, D. T. Britt, Michael E. Brown, M. W. Buie, P. R. Christensen, N. Dello Russo, Joshua P. Emery, W. M. Grundy, M. Hahn, V. E. Hamilton, C. J. A. Howett, H. H. Kaplan, Katherine A. Kretke, Tod R. Lauer, C. Manzoni, Raphael Marschall, A. Martin, B. May, S. Mottola, C. B. Olkin, M. Pätzold, J. W. Parker, Simon Porter, Frank Preusker, S. Protopapa, Dennis C. Reuter, S. J. Robbins, Julien Salmon, A. A. Simon, S. A. Stern, J. M. Sunshine, Ian Wong, H. A. Weaver, Coralie D. Adam, Shanti Ancheta, John P. Andrews, Saadat Anwar, O. S. Barnouin, Matthew Beasley, Kevin Berry, Emma Birath, Bryce Bolin, Mark Booco, Rich Burns, P. S. Campbell, Russell Carpenter, Katherine Crombie, Mark Effertz, Emily Eifert, C. Ellis, Preston Faiks, Joel T. Fischetti, Paul J. Fleming, Kristen Francis, Ray Franco, Sandy Freund, Claire Gallagher, J. Geeraert, Caden Gobat, Donovan Gorgas, Chris Granat, Sheila Gray, P. Haas, A. Harch, Katie Hegedus, Chris Isabelle, Bill Jackson, Taylor Jacob, S. H. M. Jennings, D. E. Kaufmann, Brian A. Keeney, T. Kennedy, Karl Lauffer, Erik J. Lessac‐Chenen, Rob Leonard, Andrew H. Levine, Allen Lunsford, Tim Martin, Jim McAdams, G. Mehall, Trevor F. Merkley, Graham Miller, Matthew Montanaro, Anna B. Montgomery, G. A. Murphy, Maxwell Myers, Derek Nelson, Adriana Ocampo, Ryan Olds, John Pelgrift, Trevor Perkins, Jon P. Pineau, D. Poland, Vaishnavi Ramanan, D. Rose, Eric Sahr, Owen G. Short, Ishita Solanki, Dale Stanbridge, Brian Sutter, Zachary Talpas, Howard E. Taylor, Bo Treiu, Nate Vermeer, Michael A. Vincent, Mike Wallace, Gerald Weigle, Daniel R. Wibben, Zach Wiens, John P. Wilson, Yifan Zhao,
Asteroids with diameters less than about 5 km have complex histories because they are small enough for radiative torques, YORP, to be a notable factor in their evolution. (152830) Dinkinesh is a small asteroid orbiting the Sun near the inner edge of the Main Asteroid Belt with a heliocentric semimajor axis of 2.19 AU; its S type spectrum is typical of bodies in this part of the Main Belt. Here we report observations by the Lucy spacecraft as it passed within 431 km of Dinkinesh. Lucy revealed Dinkinesh, ...
Tópico(s): Stellar, planetary, and galactic studies
2024 - Nature Portfolio | Nature
Amir H. Chinaei, Rosa Karimi Adl, Chenen Liang, Ken Barker,
Social networks have become increasingly popular over the past decade, almost in all user communities. Users, in such networks, post a variety of their (personal) information on electronic profiles – initially accessible by their friends, yet ultimately accessible by strangers, no matter transitively or directly. This is a very convenient mechanism to facilitate information sharing but it is highly susceptible to privacy violations. Most social network infrastructures do not have a privacy management ...
Tópico(s): Internet Traffic Analysis and Secure E-voting
2012 - Inderscience Publishers | International Journal of Business Information Systems
Bolin Cai, Chenen Tong, Qiujie Wu, Xiangcheng Chen,
Phase errors caused by the gamma nonlinear response of the phase shift profilometry (PSP) severely affect 3D measurement accuracy. To tackle this, a simple phase error compensation technique based on polar angle average is presented in this paper to improve the accuracy. Wrapped phase values are regarded as polar angles, and a polar axis distribution map can be obtained in the polar coordinate. Practically, the polar axis distribution (PAD) of the undistorted wrapped phase is uniform. When there are ...
Tópico(s): Advanced Measurement and Metrology Techniques
2023 - Elsevier BV | Measurement
J. F. Bell, Yuji Zhao, E. Cisneros, Matthew Beasley, C. B. Olkin, M. A. Caplinger, M. A. Ravine, J. A. Schaffner, Matthew Clark, J. M. Shamah, Preston Faiks, S. Mottola, Coralie D. Adam, Erik J. Lessac‐Chenen, Brent J. Bos,
Abstract The Terminal Tracking Camera system (TTCam) on the NASA Lucy Trojan asteroid Discovery mission consists of a pair of block redundant cameras and their associated electronics that are mounted on the spacecraft’s Instrument Pointing Platform and co-boresighted with the rest of the mission’s science payload instruments. The primary function of the TTCams is as a navigation system designed to provide an autonomous onboard late pre-encounter update of the location of each asteroid flyby target ...
Tópico(s): Space Satellite Systems and Control
2023 - Springer Science+Business Media | Space Science Reviews
Produção Nacional
Revisado por pares
Rodolfo Batista Negri, A. F. B. A. Prado,
... M., Highsmith D. E., Leonard J. M., Lessac-Chenen E. J., Levine A. H. and et al., " ...
Tópico(s): Astro and Planetary Science
2022 - American Institute of Aeronautics and Astronautics | Journal of Guidance Control and Dynamics
Bolin Cai, Chenen Tong, Qiujie Wu, Xiangcheng Chen,
Color phase-shifting profilometry encodes the gray fringe pattern of the conventional three-step phase-shifting algorithm into a single-color image as a means of greatly increasing the measurement speed. However, the color crosstalk problem induces phase errors, which affect the measuring accuracy. In this study, a color crosstalk suppression method based on the equalization of the wrapped phase chord distribution is proposed. By using the wrapped phase value as the polar angle, a chord distribution ...
Tópico(s): Optical Systems and Laser Technology
2023 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Instrumentation and Measurement
Derek Nelson, Erik J. Lessac‐Chenen, John Pelgrift, Coralie D. Adam, Frédéric Pelletier, J. R. Spencer, Mark E. Holdridge, H. A. Weaver, C. B. Olkin, S. A. Stern,
Tópico(s): Gamma-ray bursts and supernovae
2019 - Springer Science+Business Media | The Journal of the Astronautical Sciences