Dale Andrew Howell, Ph.D. - Publications

Affiliations: 
2000 University of California, Santa Barbara, Santa Barbara, CA, United States 
Area:
Gravitational Physics/Theoretical Astrophysics
Website:
http://www.physics.ucsb.edu/people/andy-howell

251 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2018 Tartaglia L, Sand DJ, Valenti S, Wyatt S, Anderson JP, Arcavi I, Ashall C, Botticella MT, Cartier R, Chen T, Cikota A, Coulter D, Valle MD, Foley RJ, Gal-Yam A, ... ... Howell DA, et al. The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am The Astrophysical Journal. 853: 62. DOI: 10.3847/1538-4357/Aaa014  0.697
2018 Terreran G, Pumo ML, Chen T, Moriya TJ, Taddia F, Dessart L, Zampieri L, Smartt SJ, Benetti S, Inserra C, Cappellaro E, Nicholl M, Fraser M, Wyrzykowski Ł, Udalski A, ... Howell DA, et al. Publisher Correction: Hydrogen-rich supernovae beyond the neutrino-driven core-collapse paradigm Nature Astronomy. 2: 173-173. DOI: 10.1038/S41550-017-0364-1  0.386
2017 Arcavi I, Howell DA, Kasen D, Bildsten L, Hosseinzadeh G, McCully C, Wong ZC, Katz SR, Gal-Yam A, Sollerman J, Taddia F, Leloudas G, Fremling C, Nugent PE, Horesh A, et al. Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star. Nature. 551: 210-213. PMID 29120417 DOI: 10.1038/Nature24030  0.559
2017 Arcavi I, Hosseinzadeh G, Howell DA, McCully C, Poznanski D, Kasen D, Barnes J, Zaltzman M, Vasylyev S, Maoz D, Valenti S. Optical emission from a kilonova following a gravitational-wave-detected neutron-star merger. Nature. PMID 29022946 DOI: 10.1038/Nature24291  0.353
2017 Hosseinzadeh G, Arcavi I, Valenti S, McCully C, Howell DA, Johansson J, Sollerman J, Pastorello A, Benetti S, Cao Y, Cenko SB, Clubb KI, Corsi A, Duggan G, Elias-Rosa N, et al. Type Ibn Supernovae Show Photometric Homogeneity and Spectral Diversity at Maximum Light The Astrophysical Journal. 836: 158. DOI: 10.3847/1538-4357/836/2/158  0.762
2016 Nicholl M, Smartt SJ, Jerkstrand A, Inserra C, McCrum M, Kotak R, Fraser M, Wright D, Chen TW, Smith K, Young DR, Sim SA, Valenti S, Howell DA, Bresolin F, et al. Corrigendum: Slowly fading super-luminous supernovae that are not pair-instability explosions. Nature. PMID 27706143 DOI: 10.1038/Nature19850  0.488
2016 Smith M, Sullivan M, D'Andrea CB, Castander FJ, Casas R, Prajs S, Papadopoulos A, Nichol RC, Karpenka NV, Bernard SR, Brown P, Cartier R, Cooke J, Curtin C, Davis TM, ... ... Howell DA, et al. DES14X3taz: A TYPE I SUPERLUMINOUS SUPERNOVA SHOWING A LUMINOUS, RAPIDLY COOLING INITIAL PRE-PEAK BUMP Astrophysical Journal Letters. 818. DOI: 10.3847/2041-8205/818/1/L8  0.795
2016 Marion GH, Brown PJ, Vinkó J, Silverman JM, Sand DJ, Challis P, Kirshner RP, Wheeler JC, Berlind P, Brown WR, Calkins ML, Camacho Y, Dhungana G, Foley RJ, Friedman AS, ... ... Howell DA, et al. SN 2012cg: EVIDENCE for INTERACTION between A NORMAL SN Ia and A NON-DEGENERATE BINARY COMPANION Astrophysical Journal. 820: 1DUMMY. DOI: 10.3847/0004-637X/820/2/92  0.825
2016 Rubin A, Gal-Yam A, De Cia A, Horesh A, Khazov D, Ofek EO, Kulkarni SR, Arcavi I, Manulis I, Yaron O, Vreeswijk P, Kasliwal MM, Ben-Ami S, Perley DA, Cao Y, ... ... Howell DA, et al. TYPE II SUPERNOVA ENERGETICS and COMPARISON of LIGHT CURVES to SHOCK-COOLING MODELS Astrophysical Journal. 820. DOI: 10.3847/0004-637X/820/1/33  0.819
2016 Arcavi I, Wolf WM, Howell DA, Bildsten L, Leloudas G, Hardin D, Prajs S, Perley DA, Svirski G, Gal-Yam A, Katz B, McCully C, Cenko SB, Lidman C, Sullivan M, et al. RAPIDLY RISING TRANSIENTS in the SUPERNOVA - SUPERLUMINOUS SUPERNOVA GAP Astrophysical Journal. 819. DOI: 10.3847/0004-637X/819/1/35  0.682
2016 Khazov D, Yaron O, Gal-Yam A, Manulis I, Rubin A, Kulkarni SR, Arcavi I, Kasliwal MM, Ofek EO, Cao Y, Perley D, Sollerman J, Horesh A, Sullivan M, Filippenko AV, ... ... Howell DA, et al. FLASH SPECTROSCOPY: EMISSION LINES FROM THE IONIZED CIRCUMSTELLAR MATERIAL AROUND <10-DAY-OLD TYPE II SUPERNOVAE Astrophysical Journal. 818. DOI: 10.3847/0004-637X/818/1/3  0.656
2016 Parrent JT, Howell DA, Fesen RA, Parker S, Bianco FB, Dilday B, Sand D, Valenti S, Vinkó J, Berlind P, Challis P, Milisavljevic D, Sanders N, Marion GH, Wheeler JC, et al. Comparative analysis of SN 2012dn optical spectra: Days -14 to +114 Monthly Notices of the Royal Astronomical Society. 457: 3702-3723. DOI: 10.1093/Mnras/Stw239  0.827
2016 Kangas T, Mattila S, Kankare E, Lundqvist P, Väisänen P, Childress M, Pignata G, McCully C, Valenti S, Vinkó J, Pastorello A, Elias-Rosa N, Fraser M, Gal-Yam A, Kotak R, ... Howell DA, et al. Supernova 2013fc in a circumnuclear ring of a luminous infrared galaxy: The big brother of SN 1998S Monthly Notices of the Royal Astronomical Society. 456: 323-346. DOI: 10.1093/Mnras/Stv2567  0.828
2015 Walker JT, Howell DA, Gupta S, Klibansky DA, Penfield J. Endoscopic management of high-risk giant gastric polyps: variations on the loop-and-leave technique. Gastrointestinal Endoscopy. PMID 26432942 DOI: 10.1016/j.gie.2015.09.034  0.455
2015 Howell DA, Warburton F, Ramirez AJ, Roman E, Smith AG, Forbes LJ. Risk factors and time to symptomatic presentation in leukaemia, lymphoma and myeloma. British Journal of Cancer. 113: 1114-20. PMID 26325101 DOI: 10.1038/bjc.2015.311  0.442
2015 Howell DA, Wang HI, Roman E, Smith AG, Patmore R, Johnson MJ, Garry A, Howard M. Preferred and actual place of death in haematological malignancy. Bmj Supportive & Palliative Care. PMID 26156005 DOI: 10.1136/bmjspcare-2014-000793  0.442
2015 Cao Y, Kulkarni SR, Howell DA, Gal-Yam A, Kasliwal MM, Valenti S, Johansson J, Amanullah R, Goobar A, Sollerman J, Taddia F, Horesh A, Sagiv I, Cenko SB, Nugent PE, et al. Erratum: A strong ultraviolet pulse from a newborn type Ia supernova. Nature. PMID 26106860 DOI: 10.1038/Nature14605  0.47
2015 Cao Y, Kulkarni SR, Howell DA, Gal-Yam A, Kasliwal MM, Valenti S, Johansson J, Amanullah R, Goobar A, Sollerman J, Taddia F, Horesh A, Sagiv I, Cenko SB, Nugent PE, et al. A strong ultraviolet pulse from a newborn type Ia supernova. Nature. 521: 328-31. PMID 25993962 DOI: 10.1038/Nature14440  0.551
2015 Taylor P, Crouch S, Howell DA, Dowding DW, Johnson MJ. Change in physiological variables in the last 2 weeks of life: an observational study of hospital in-patients with cancer. Palliative Medicine. 29: 120-7. PMID 25524964 DOI: 10.1177/0269216314554967  0.442
2015 Niscola P, Tendas A, Giovannini M, Scaramucci L, Perrotti A, de Fabritiis P, Howell DA. Caring for terminal patients in haematology: the urgent need of a new research agenda. Supportive Care in Cancer : Official Journal of the Multinational Association of Supportive Care in Cancer. 23: 5-7. PMID 25341550 DOI: 10.1007/s00520-014-2489-4  0.474
2015 Childress MJ, Hillier DJ, Seitenzahl I, Sullivan M, Maguire K, Taubenberger S, Scalzo R, Ruiter A, Blagorodnova N, Camacho Y, Castillo J, Elias-Rosa N, Fraser M, Gal-Yam A, Graham M, ... Howell DA, et al. Measuring nickel masses in Type Ia supernovae using cobalt emission in nebular phase spectra Monthly Notices of the Royal Astronomical Society. 454: 3816-3842. DOI: 10.1093/Mnras/Stv2173  0.676
2015 Amanullah R, Johansson J, Goobar A, Ferretti R, Papadogiannakis S, Petrushevska T, Brown PJ, Cao Y, Contreras C, Dahle H, Elias-Rosa N, Fynbo JPU, Gorosabel J, Guaita L, Hangard L, ... Howell DA, et al. Diversity in extinction laws of Type Ia supernovae measured between 0.2 and 2μm Monthly Notices of the Royal Astronomical Society. 453: 3300-3328. DOI: 10.1093/Mnras/Stv1505  0.718
2015 González-Gaitán S, Tominaga N, Molina J, Galbany L, Bufano F, Anderson JP, Gutierrez C, Förster F, Pignata G, Bersten M, Howell DA, Sullivan M, Carlberg R, De Jaeger T, Hamuy M, et al. The rise-time of Type II supernovae Monthly Notices of the Royal Astronomical Society. 451: 2212-2229. DOI: 10.1093/Mnras/Stv1097  0.674
2015 Inserra C, Sim SA, Wyrzykowski L, Smartt SJ, Fraser M, Nicholl M, Shen KJ, Jerkstrand A, Gal-Yam A, Howell DA, Maguire K, Mazzali P, Valenti S, Taubenberger S, Benitez-Herrera S, et al. OGLE-2013-SN-079: A lonely supernova consistent with a helium shell detonation Astrophysical Journal Letters. 799. DOI: 10.1088/2041-8205/799/1/L2  0.565
2015 Graham ML, Valenti S, Fulton BJ, Weiss LM, Shen KJ, Kelly PL, Zheng W, Filippenko AV, Marcy GW, Howell DA, Burt J, Rivera EJ. Time-varying potassium in high-resolution spectra of the type Ia supernova 2014J Astrophysical Journal. 801. DOI: 10.1088/0004-637X/801/2/136  0.66
2015 White CJ, Kasliwal MM, Nugent PE, Gal-Yam A, Howell DA, Sullivan M, Goobar A, Piro AL, Bloom JS, Kulkarni SR, Laher RR, Masci F, Ofek EO, Surace J, Ben-Ami S, et al. Slow-speed supernovae from the Palomar transient factory: Two channels Astrophysical Journal. 799. DOI: 10.1088/0004-637X/799/1/52  0.77
2015 Marion GH, Sand DJ, Hsiao EY, Banerjee DPK, Valenti S, Stritzinger MD, Vinkó J, Joshi V, Venkataraman V, Ashok NM, Amanullah R, Binzel RP, Bochanski JJ, Bryngelson GL, Burns CR, ... ... Howell DA, et al. Early observations and analysis of the type Ia SN 2014J in M82 Astrophysical Journal. 798. DOI: 10.1088/0004-637X/798/1/39  0.814
2015 Hsiao EY, Burns CR, Contreras C, Höflich P, Sand D, Marion GH, Phillips MM, Stritzinger M, González-Gaitán S, Mason RE, Folatelli G, Parent E, Gall C, Amanullah R, Anupama GC, ... ... Howell DA, et al. Strong near-infrared carbon in the Type Ia supernova iPTF13ebh Astronomy and Astrophysics. 578. DOI: 10.1051/0004-6361/201425297  0.814
2015 Howell DA, Warburton F, Ramirez AJ, Roman E, Smith AG, Forbes LJL. Risk factors and time to symptomatic presentation in leukaemia, lymphoma and myeloma British Journal of Cancer. DOI: 10.1038/bjc.2015.311  0.455
2014 St John JA, Shubert TE, Smith ML, Rosemond CA, Howell DA, Beaudoin CE, Ory MG. Developing an evidence-based fall prevention curriculum for community health workers. Frontiers in Public Health. 2: 209. PMID 25964920 DOI: 10.3389/Fpubh.2014.00209  0.442
2014 Howell DA, Wang HI, Roman E, Smith AG, Patmore R, Johnson MJ, Garry AC, Howard MR. Variations in specialist palliative care referrals: findings from a population-based patient cohort of acute myeloid leukaemia, diffuse large B-cell lymphoma and myeloma. Bmj Supportive & Palliative Care. PMID 24644210 DOI: 10.1136/bmjspcare-2013-000578  0.448
2014 Smith AG, Painter D, Howell DA, Evans P, Smith G, Patmore R, Jack A, Roman E. Determinants of survival in patients with chronic myeloid leukaemia treated in the new era of oral therapy: findings from a UK population-based patient cohort. Bmj Open. 4: e004266. PMID 24435897 DOI: 10.1136/bmjopen-2013-004266  0.438
2014 Smith MT, Howell DA, Triska MAT, Higgins C. Behavior of epoxy-injected diagonally cracked full-scale reinforced concrete girders Aci Structural Journal. 111: 291-301. DOI: 10.14359/51686521  0.455
2014 Boroson T, Brown T, Hjelstrom A, Howell DA, Lister T, Pickles A, Rosing W, Saunders E, Street R, Walker Z. Science operations for LCOGT - A global telescope network Proceedings of Spie - the International Society For Optical Engineering. 9149. DOI: 10.1117/12.2054776  0.499
2014 Galinski N, Sjue SKL, Ball GC, Cross DS, Davids B, Al Falou H, Garnsworthy AB, Hackman G, Hager U, Howell DA, Jones M, Kanungo R, Kshetri R, Leach KG, Leslie JR, et al. Lifetime measurements of states in O 15 Physical Review C - Nuclear Physics. 90. DOI: 10.1103/Physrevc.90.035803  0.477
2014 Valenti S, Sand D, Pastorello A, Graham ML, Howell DA, Parrent JT, Tomasella L, Ochner P, Fraser M, Benetti S, Yuan F, Smartt SJ, Maund JR, Arcavi I, Gal-Yam A, et al. The first month of evolution of the slow-rising Type IIP SN 2013ej in M74 Monthly Notices of the Royal Astronomical Society: Letters. 438: L101-L105. DOI: 10.1093/Mnrasl/Slt171  0.775
2014 Pan YC, Sullivan M, Maguire K, Gal-Yam A, Hook IM, Howell DA, Nugent PE, Mazzali PA. Type Ia supernova spectral features in the context of their host galaxy properties Monthly Notices of the Royal Astronomical Society. 446: 354-368. DOI: 10.1093/Mnras/Stu2121  0.67
2014 Maguire K, Sullivan M, Pan YC, Gal-Yam A, Hook IM, Howell DA, Nugent PE, Mazzali P, Chotard N, Clubb KI, Filippenko AV, Kasliwal MM, Kandrashoff MT, Poznanski D, Saunders CM, et al. Exploring the spectral diversity of low-redshift Type Ia supernovae using the Palomar Transient Factory Monthly Notices of the Royal Astronomical Society. 444: 3258-3274. DOI: 10.1093/Mnras/Stu1607  0.637
2014 Nicholl M, Smartt SJ, Jerkstrand A, Inserra C, Anderson JP, Baltay C, Benetti S, Chen TW, Elias-Rosa N, Feindt U, Fraser M, Gal-Yam A, Hadjiyska E, Howell DA, Kotak R, et al. Superluminous supernovae from PESSTO Monthly Notices of the Royal Astronomical Society. 444: 2096-2113. DOI: 10.1093/Mnras/Stu1579  0.67
2014 Spiro S, Pastorello A, Pumo ML, Zampieri L, Turatto M, Smartt SJ, Benetti S, Cappellaro E, Valenti S, Agnoletto I, Altavilla G, Aoki T, Brocato E, Corsini EM, Di Cianno A, ... ... Howell DA, et al. Low luminosity type II supernovae-II. Pointing towards moderate mass precursors Monthly Notices of the Royal Astronomical Society. 439: 2873-2892. DOI: 10.1093/Mnras/Stu156  0.514
2014 Mazzali PA, Sullivan M, Hachinger S, Ellis RS, Nugent PE, Howell DA, Gal-Yam A, Maguire K, Cooke J, Thomas R, Nomoto K, Walker ES. Hubble Space Telescope spectra of the Type Ia supernova SN 2011fe: A tail of low-density, high-velocity material with Z ≤ Z⊙ Monthly Notices of the Royal Astronomical Society. 439: 1959-1979. DOI: 10.1093/Mnras/Stu077  0.674
2014 Pan YC, Sullivan M, Maguire K, Hook IM, Nugent PE, Howell DA, Arcavi I, Botyanszki J, Cenko SB, DeRose J, Fakhouri HK, Gal-Yam A, Hsiao E, Kulkarni SR, Laher RR, et al. The host galaxies of type Ia supernovae discovered by the palomar transient factory Monthly Notices of the Royal Astronomical Society. 438: 1391-1416. DOI: 10.1093/Mnras/Stt2287  0.648
2014 Goobar A, Johansson J, Amanullah R, Cao Y, Perley DA, Kasliwal MM, Ferretti R, Nugent PE, Harris C, Gal-Yam A, Ofek EO, Tendulkar SP, Dennefeld M, Valenti S, Arcavi I, ... ... Howell DA, et al. The rise of SN 2014J in the nearby galaxy M82 Astrophysical Journal Letters. 784. DOI: 10.1088/2041-8205/784/1/L12  0.71
2014 Arcavi I, Gal-Yam A, Sullivan M, Pan YC, Cenko SB, Horesh A, Ofek EO, De Cia A, Yan L, Yang CW, Howell DA, Tal D, Kulkarni SR, Tendulkar SP, Tang S, et al. A continuum of H- to He-rich tidal disruption candidates with a preference for E+A galaxies Astrophysical Journal. 793. DOI: 10.1088/0004-637X/793/1/38  0.776
2014 Shappee BJ, Prieto JL, Grupe D, Kochanek CS, Stanek KZ, De Rosa G, Mathur S, Zu Y, Peterson BM, Pogge RW, Komossa S, Im M, Jencson J, Holoien TWS, Basu U, ... ... Howell DA, et al. The man behind the curtain: X-rays drive the UV through NIR variability in the 2013 active galactic nucleus outburst in NGC 2617 Astrophysical Journal. 788. DOI: 10.1088/0004-637X/788/1/48  0.698
2014 Graham ML, Sand DJ, Valenti S, Howell DA, Parrent J, Halford M, Zaritsky D, Bianco F, Rest A, Dilday B. Clues to the nature of SN 2009ip from photometric and spectroscopic evolution to late times Astrophysical Journal. 787. DOI: 10.1088/0004-637X/787/2/163  0.792
2014 Dall'Ora M, Botticella MT, Pumo ML, Zampieri L, Tomasella L, Pignata G, Bayless AJ, Pritchard TA, Taubenberger S, Kotak R, Inserra C, Della Valle M, Cappellaro E, Benetti S, Benitez S, ... ... Howell DA, et al. The type IIP supernova 2012aw in m95: Hydrodynamical modeling of the photospheric phase from accurate spectrophotometric monitoring Astrophysical Journal. 787. DOI: 10.1088/0004-637X/787/2/139  0.557
2014 Fremling C, Sollerman J, Taddia F, Ergon M, Valenti S, Arcavi I, Ben-Ami S, Cao Y, Cenko SB, Filippenko AV, Gal-Yam A, Howell DA. The rise and fall of the type Ib supernova iPTF13bvn: Not a massive Wolf-Rayet star Astronomy and Astrophysics. 565. DOI: 10.1051/0004-6361/201423884  0.567
2014 Betoule M, Kessler R, Guy J, Mosher J, Hardin D, Biswas R, Astier P, El-Hage P, Konig M, Kuhlmann S, Marriner J, Pain R, Regnault N, Balland C, Bassett BA, ... ... Howell DA, et al. Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples Astronomy and Astrophysics. 568. DOI: 10.1051/0004-6361/201423413  0.822
2014 Smith MT, Howell DA, Triska MAT, Higgins C. Effects of axial tension on shear-moment capacity of full-scale reinforced concrete girders Aci Structural Journal. 111: 211-222.  0.455
2014 Howell DA. Uncertainty avoidance in the organizational culture of engineering chapter six: A miniature study within a study 2014 International Annual Conference of the American Society For Engineering Management - Entrepreneurship Engineering: Harnessing Innovation, Asem 2014 0.456
2013 Howell DA, Wang HI, Smith AG, Howard MR, Patmore RD, Roman E. Place of death in haematological malignancy: variations by disease sub-type and time from diagnosis to death. Bmc Palliative Care. 12: 42. PMID 24245578 DOI: 10.1186/1472-684X-12-42  0.449
2013 Howell DA, Smith AG, Jack A, Patmore R, Macleod U, Mironska E, Roman E. Time-to-diagnosis and symptoms of myeloma, lymphomas and leukaemias: a report from the Haematological Malignancy Research Network. Bmc Hematology. 13: 9. PMID 24238148 DOI: 10.1186/2052-1839-13-9  0.457
2013 Nicholl M, Smartt SJ, Jerkstrand A, Inserra C, McCrum M, Kotak R, Fraser M, Wright D, Chen TW, Smith K, Young DR, Sim SA, Valenti S, Howell DA, Bresolin F, et al. Slowly fading super-luminous supernovae that are not pair-instability explosions. Nature. 502: 346-9. PMID 24132291 DOI: 10.1038/Nature12569  0.702
2013 Wagh MS, de Bellis M, Fogel EL, Frakes JT, Johanson JF, Qaseem T, Howell DA, Lehman GA, Sherman S. Multicenter Randomized Trial of 10-French versus 11.5-French Plastic Stents for Malignant Biliary Obstruction. Diagnostic and Therapeutic Endoscopy. 2013: 891915. PMID 23737656 DOI: 10.1155/2013/891915  0.48
2013 Ofek EO, Sullivan M, Cenko SB, Kasliwal MM, Gal-Yam A, Kulkarni SR, Arcavi I, Bildsten L, Bloom JS, Horesh A, Howell DA, Filippenko AV, Laher R, Murray D, Nakar E, et al. An outburst from a massive star 40 days before a supernova explosion. Nature. 494: 65-7. PMID 23389540 DOI: 10.1038/Nature11877  0.666
2013 Shah RJ, Smolkin M, Yen R, Ross A, Kozarek RA, Howell DA, Bakis G, Jonnalagadda SS, Al-Lehibi AA, Hardy A, Morgan DR, Sethi A, Stevens PD, Akerman PA, Thakkar SJ, et al. A multicenter, U.S. experience of single-balloon, double-balloon, and rotational overtube-assisted enteroscopy ERCP in patients with surgically altered pancreaticobiliary anatomy (with video). Gastrointestinal Endoscopy. 77: 593-600. PMID 23290720 DOI: 10.1016/j.gie.2012.10.015  0.449
2013 Barkay O, Mosler P, Schmitt CM, Lehman GA, Frakes JT, Johanson JF, Qaseem T, Howell DA, Sherman S. Effect of endoscopic stenting of malignant bile duct obstruction on quality of life. Journal of Clinical Gastroenterology. 47: 526-31. PMID 23269313 DOI: 10.1097/MCG.0b013e318272440e  0.457
2013 Valenti S, Yuan F, Taubenberger S, Maguire K, Pastorello A, Benetti S, Smartt SJ, Cappellaro E, Howell DA, Bildsten L, Moore K, Stritzinger M, Anderson JP, Benitez-Herrera S, Bufano F, et al. PESSTO monitoring of SN 2012hn: Further heterogeneity among faint type I supernovae Monthly Notices of the Royal Astronomical Society. 437: 1519-1533. DOI: 10.1093/Mnras/Stt1983  0.668
2013 McCrum M, Smartt SJ, Kotak R, Rest A, Jerkstrand A, Inserra C, Rodney SA, Chen TW, Howell DA, Huber ME, Pastorello A, Tonry JL, Bresolin F, Kudritzki RP, Chornock R, et al. The superluminous supernova PS1-11ap: Bridging the gap between low and high redshift Monthly Notices of the Royal Astronomical Society. 437: 656-674. DOI: 10.1093/Mnras/Stt1923  0.695
2013 Maguire K, Sullivan M, Patat F, Gal-Yam A, Hook IM, Dhawan S, Howell DA, Mazzali P, Nugent PE, Pan YC, Podsiadlowski P, Simon JD, Sternberg A, Valenti S, Baltay C, et al. A statistical analysis of circumstellar material in type Ia supernovae Monthly Notices of the Royal Astronomical Society. 436: 222-240. DOI: 10.1093/Mnras/Stt1586  0.727
2013 Hachinger S, Mazzali PA, Sullivan M, Ellis RS, Maguire K, Gal-Yam A, Howell DA, Nugent PE, Baron E, Cooke J, Arcavi I, Bersier D, Dilday B, James PA, Kasliwal MM, et al. The UV/optical spectra of the Type Ia supernova SN 2010jn: A bright supernova with outer layers rich in iron-group elements Monthly Notices of the Royal Astronomical Society. 429: 2228-2248. DOI: 10.1093/Mnras/Sts492  0.658
2013 Zheng W, Silverman JM, Filippenko AV, Kasen D, Nugent PE, Graham M, Wang X, Valenti S, Ciabattari F, Kelly PL, Fox OD, Shivvers I, Clubb KI, Cenko SB, Balam D, ... Howell DA, et al. The very young type Ia supernova 2013dy: Discovery, and strong carbon absorption in early-time spectra Astrophysical Journal Letters. 778. DOI: 10.1088/2041-8205/778/1/L15  0.679
2013 Cao Y, Kasliwal MM, Arcavi I, Horesh A, Hancock P, Valenti S, Cenko SB, Kulkarni SR, Gal-Yam A, Gorbikov E, Ofek EO, Sand D, Yaron O, Graham M, Silverman JM, ... ... Howell DA, et al. Discovery, progenitor and early evolution of a stripped envelope supernova iPTF13bvn Astrophysical Journal Letters. 775. DOI: 10.1088/2041-8205/775/1/L7  0.827
2013 Silverman JM, Nugent PE, Gal-Yam A, Sullivan M, Howell DA, Filippenko AV, Arcavi I, Ben-Ami S, Bloom JS, Cenko SB, Cao Y, Chornock R, Clubb KI, Coil AL, Foley RJ, et al. Type Ia supernovae strongly interacting with their circumstellar medium Astrophysical Journal, Supplement Series. 207. DOI: 10.1088/0067-0049/207/1/3  0.827
2013 Howell DA, Kasen D, Lidman C, Sullivan M, Conley A, Astier P, Balland C, Carlberg RG, Fouchez D, Guy J, Hardin D, Pain R, Palanque-Delabrouille N, Perrett K, Pritchet CJ, et al. Two superluminous supernovae from the early universe discovered by the supernova legacy survey Astrophysical Journal. 779. DOI: 10.1088/0004-637X/779/2/98  0.677
2013 Silverman JM, Nugent PE, Gal-Yam A, Sullivan M, Howell DA, Filippenko AV, Pan YC, Cenko SB, Hook IM. Late-time spectral observations of the strongly interacting type ia supernova PTF11kx Astrophysical Journal. 772. DOI: 10.1088/0004-637X/772/2/125  0.625
2013 Inserra C, Smartt SJ, Jerkstrand A, Valenti S, Fraser M, Wright D, Smith K, Chen TW, Kotak R, Pastorello A, Nicholl M, Bresolin F, Kudritzki RP, Benetti S, Botticella MT, ... ... Howell DA, et al. Super-Luminous Type Ic Supernovae: Catching a magnetar by the tail Astrophysical Journal. 770. DOI: 10.1088/0004-637X/770/2/128  0.585
2013 Brown TM, Baliber N, Bianco FB, Bowman M, Burleson B, Conway P, Crellin M, Depagne E, De Vera J, Dilday B, Dragomir D, Dubberley M, Eastman JD, Elphick M, Falarski M, ... ... Howell DA, et al. Las cumbres observatory global telescope network Publications of the Astronomical Society of the Pacific. 125: 1031-1055. DOI: 10.1086/673168  0.629
2013 Lidman C, Ruhlmann-Kleider V, Sullivan M, Myzska J, Dobbie P, Glazebrook K, Mould J, Astier P, Balland C, Betoule M, Carlberg R, Conley A, Fouchez D, Guy J, Hardin D, ... ... Howell DA, et al. An efficient approach to obtaining large numbers of distant supernova host galaxy redshifts Publications of the Astronomical Society of Australia. 30. DOI: 10.1017/Pasa.2012.001  0.664
2013 Yeh CS, Mayer CS, Howell DA, Grueschow ER, Angeles R, Gillespie GA, Sladic J, Simonds R. Extending the production capacity in sand control completions using a self-mitigating sand screen Spe - European Formation Damage Conference, Proceedings, Efdc. 1: 489-496.  0.455
2013 Traum MJ, Howell DA, Newman LC. Engineering design, project management, and community service connected through servant leadership Asee Annual Conference and Exposition, Conference Proceedings 0.455
2013 Howell DA. Illuminating dark energy with supernovae American Scientist. 101: 274-281.  0.556
2013 Howell DA, Utley DR. The importance of organizational commitment to knowledge sharing among engineers International Annual Conference of the American Society For Engineering Management 2013, Asem 2013. 596-606.  0.457
2012 Dilday B, Howell DA, Cenko SB, Silverman JM, Nugent PE, Sullivan M, Ben-Ami S, Bildsten L, Bolte M, Endl M, Filippenko AV, Gnat O, Horesh A, Hsiao E, Kasliwal MM, et al. PTF 11kx: a type Ia supernova with a symbiotic nova progenitor. Science (New York, N.Y.). 337: 942-5. PMID 22923575 DOI: 10.1126/Science.1219164  0.76
2012 Rest A, Prieto JL, Walborn NR, Smith N, Bianco FB, Chornock R, Welch DL, Howell DA, Huber ME, Foley RJ, Fong W, Sinnott B, Bond HE, Smith RC, Toledo I, et al. Light echoes reveal an unexpectedly cool η Carinae during its nineteenth-century Great Eruption. Nature. 482: 375-8. PMID 22337057 DOI: 10.1038/Nature10775  0.825
2012 Walker ES, Hachinger S, Mazzali PA, Ellis RS, Sullivan M, Gal-Yam A, Howell DA. Studying the diversity of Type Ia supernovae in the ultraviolet: Comparing models with observations Monthly Notices of the Royal Astronomical Society. 427: 103-113. DOI: 10.1111/J.1365-2966.2012.21928.X  0.632
2012 Maguire K, Sullivan M, Ellis RS, Nugent PE, Howell DA, Gal-Yam A, Cooke J, Mazzali P, Pan YC, Dilday B, Thomas RC, Arcavi I, Ben-Ami S, Bersier D, Bianco FB, et al. Hubble space telescope studies of low-redshift type Ia supernovae: Evolution with redshift and ultraviolet spectral trends Monthly Notices of the Royal Astronomical Society. 426: 2359-2379. DOI: 10.1111/J.1365-2966.2012.21909.X  0.698
2012 Barone-Nugent RL, Lidman C, Wyithe JSB, Mould J, Howell DA, Hook IM, Sullivan M, Nugent PE, Arcavi I, Cenko SB, Cooke J, Gal-Yam A, Hsiao EY, Kasliwal MM, Maguire K, et al. Near-infrared observations of type ia supernovae: The best known standard candle for cosmology Monthly Notices of the Royal Astronomical Society. 425: 1007-1012. DOI: 10.1111/J.1365-2966.2012.21412.X  0.663
2012 Cenko SB, Bloom JS, Kulkarni SR, Strubbe LE, Miller AA, Butler NR, Quimby RM, Gal-Yam A, Ofek EO, Quataert E, Bildsten L, Poznanski D, Perley DA, Morgan AN, Filippenko AV, ... Howell DA, et al. PTF10iya: A short-lived, luminous flare from the nuclear region of a star-forming galaxy Monthly Notices of the Royal Astronomical Society. 420: 2684-2699. DOI: 10.1111/J.1365-2966.2011.20240.X  0.789
2012 Ben-Ami S, Gal-Yam A, Filippenko AV, Mazzali PA, Modjaz M, Yaron O, Arcavi I, Cenko SB, Horesh A, Howell DA, Graham ML, Horst JC, Im M, Jeon Y, Kulkarni SR, et al. Discovery and early multi-wavelength measurements of the energetic type IC supernova ptf12gzk: A massive-star explosion in a dwarf host galaxy Astrophysical Journal Letters. 760. DOI: 10.1088/2041-8205/760/2/L33  0.829
2012 Parrent JT, Howell DA, Friesen B, Thomas RC, Fesen RA, Milisavljevic D, Bianco FB, Dilday B, Nugent P, Baron E, Arcavi I, Ben-Ami S, Bersier D, Bildsten L, Bloom J, et al. Analysis of the early-time optical spectra of SN 2011fe in M101 Astrophysical Journal Letters. 752. DOI: 10.1088/2041-8205/752/2/L26  0.76
2012 Kasliwal MM, Kulkarni SR, Gal-Yam A, Nugent PE, Sullivan M, Bildsten L, Yaron O, Perets HB, Arcavi I, Ben-Ami S, Bhalerao VB, Bloom JS, Cenko SB, Filippenko AV, Frail DA, ... Howell DA, et al. Calcium-rich gap transients in the remote outskirts of galaxies Astrophysical Journal. 755. DOI: 10.1088/0004-637X/755/2/161  0.784
2012 Horesh A, Kulkarni SR, Fox DB, Carpenter J, Kasliwal MM, Ofek EO, Quimby R, Gal-Yam A, Cenko SB, De Bruyn AG, Kamble A, Wijers RAMJ, Van Der Horst AJ, Kouveliotou C, Podsiadlowski P, ... ... Howell DA, et al. Early radio and X-ray observations of the youngest nearby Type Ia supernova PTF11kly (SN2011fe) Astrophysical Journal. 746. DOI: 10.1088/0004-637X/746/1/21  0.668
2012 González-Gaitán S, Conley A, Bianco FB, Howell DA, Sullivan M, Perrett K, Carlberg R, Astier P, Balam D, Balland C, Basa S, Fouchez D, Fourmanoit N, Graham ML, Guy J, et al. The rise time of normal and subluminous type Ia supernovae Astrophysical Journal. 745. DOI: 10.1088/0004-637X/745/1/44  0.734
2012 Perrett K, Sullivan M, Conley A, González-Gaitán S, Carlberg R, Fouchez D, Ripoche P, Neill JD, Astier P, Balam D, Balland C, Basa S, Guy J, Hardin D, Hook IM, ... Howell DA, et al. Evolution in the volumetric type Ia supernova rate from the supernova legacy survey Astronomical Journal. 144. DOI: 10.1088/0004-6256/144/2/59  0.677
2012 Rest A, Prieto JL, Walborn NR, Smith N, Bianco FB, Chornock R, Welch DL, Howell DA, Huber ME, Foley RJ, Fong W, Sinnott B, Bond HE, Smith RC, Toledo I, et al. Rest et al. reply Nature. 486: E1-E2. DOI: 10.1038/Nature11167  0.665
2012 Yeh CS, Moffett TJ, Mayer CS, Bailey NS, Howell DA, Barry MD, Hecker MT, Green A, Gillespie GA, Hall CA, McNamee S. Unlocking the limits of sand screen reliability with an innovative and self-adapting technology Society of Petroleum Engineers - International Petroleum Technology Conference 2012, Iptc 2012. 2: 1399-1408.  0.455
2011 Li W, Bloom JS, Podsiadlowski P, Miller AA, Cenko SB, Jha SW, Sullivan M, Howell DA, Nugent PE, Butler NR, Ofek EO, Kasliwal MM, Richards JW, Stockton A, Shih HY, et al. Exclusion of a luminous red giant as a companion star to the progenitor of supernova SN 2011fe. Nature. 480: 348-50. PMID 22170681 DOI: 10.1038/Nature10646  0.771
2011 Nugent PE, Sullivan M, Cenko SB, Thomas RC, Kasen D, Howell DA, Bersier D, Bloom JS, Kulkarni SR, Kandrashoff MT, Filippenko AV, Silverman JM, Marcy GW, Howard AW, Isaacson HT, et al. Supernova SN 2011fe from an exploding carbon-oxygen white dwarf star. Nature. 480: 344-7. PMID 22170680 DOI: 10.1038/Nature10644  0.819
2011 Howell DA. Type Ia supernovae as stellar endpoints and cosmological tools. Nature Communications. 2: 350. PMID 21673671 DOI: 10.1038/ncomms1344  0.559
2011 Quimby RM, Kulkarni SR, Kasliwal MM, Gal-Yam A, Arcavi I, Sullivan M, Nugent P, Thomas R, Howell DA, Nakar E, Bildsten L, Theissen C, Law NM, Dekany R, Rahmer G, et al. Hydrogen-poor superluminous stellar explosions. Nature. 474: 487-9. PMID 21654747 DOI: 10.1038/Nature10095  0.772
2011 Howell DA, Shellens R, Roman E, Garry AC, Patmore R, Howard MR. Haematological malignancy: are patients appropriately referred for specialist palliative and hospice care? A systematic review and meta-analysis of published data. Palliative Medicine. 25: 630-41. PMID 21228094 DOI: 10.1177/0269216310391692  0.468
2011 Wright ER, Bakis G, Srinivasan R, Raju R, Vittal H, Sanders MK, Bernadino K, Stefan A, Blaszyk H, Howell DA. Intraprocedural tissue diagnosis during ERCP employing a new cytology preparation of forceps biopsy (Smash protocol). The American Journal of Gastroenterology. 106: 294-9. PMID 21102569 DOI: 10.1038/ajg.2010.447  0.461
2011 Maguire K, Sullivan M, Thomas RC, Nugent P, Howell DA, Gal-Yam A, Arcavi I, Ben-Ami S, Blake S, Botyanszki J, Buton C, Cooke J, Ellis RS, Hook IM, Kasliwal MM, et al. PTF10ops - a subluminous, normal-width light curve Type Ia supernova in the middle of nowhere Monthly Notices of the Royal Astronomical Society. 418: 747-758. DOI: 10.1111/J.1365-2966.2011.19526.X  0.788
2011 Smith AM, Lynn S, Sullivan M, Lintott CJ, Nugent PE, Botyanszki J, Kasliwal M, Quimby R, Bamford SP, Fortson LF, Schawinski K, Hook I, Blake S, Podsiadlowski P, Jönsson J, ... ... Howell DA, et al. Galaxy Zoo Supernovae Monthly Notices of the Royal Astronomical Society. 412: 1309-1319. DOI: 10.1111/J.1365-2966.2010.17994.X  0.58
2011 Walker ES, Hook IM, Sullivan M, Howell DA, Astier P, Balland C, Basa S, Bronder TJ, Carlberg R, Conley A, Fouchez D, Guy J, Hardin D, Pain R, Perrett K, et al. Supernova Legacy Survey: Using spectral signatures to improve Type Ia supernovae as distance indicators Monthly Notices of the Royal Astronomical Society. 410: 1262-1282. DOI: 10.1111/J.1365-2966.2010.17519.X  0.666
2011 Arcavi I, Gal-Yam A, Yaron O, Sternberg A, Rabinak I, Waxman E, Kasliwal MM, Quimby RM, Ofek EO, Horesh A, Kulkarni SR, Filippenko AV, Silverman JM, Cenko SB, Li W, ... Howell DA, et al. SN 2011dh: Discovery of a type IIb supernova from a compact progenitor in the nearby galaxy M51 Astrophysical Journal Letters. 742. DOI: 10.1088/2041-8205/742/2/L18  0.782
2011 Cooke J, Ellis RS, Sullivan M, Nugent P, Howell DA, Gal-Yam A, Lidman C, Bloom JS, Cenko SB, Kasliwal MM, Kulkarni SR, Law NM, Ofek EO, Quimby RM. Hubble Space Telescope studies of nearby Type Ia supernovae: The mean maximum light ultraviolet spectrum and its dispersion Astrophysical Journal Letters. 727. DOI: 10.1088/2041-8205/727/2/L35  0.771
2011 Conley A, Guy J, Sullivan M, Regnault N, Astier P, Balland C, Basa S, Carlberg RG, Fouchez D, Hardin D, Hook IM, Howell DA, Pain R, Palanque-Delabrouille N, Perrett KM, et al. Supernova constraints and systematic uncertainties from the first three years of the Supernova Legacy Survey Astrophysical Journal, Supplement Series. 192. DOI: 10.1088/0067-0049/192/1/1  0.76
2011 Corsi A, Ofek EO, Frail DA, Poznanski D, Arcavi I, Gal-Yam A, Kulkarni SR, Hurley K, Mazzali PA, Howell DA, Kasliwal MM, Green Y, Murray D, Sullivan M, Xu D, et al. PTF 10bzf (SN2010ah): A broad-line Ic supernova discovered by the Palomar Transient Factory Astrophysical Journal. 741. DOI: 10.1088/0004-637X/741/2/76  0.759
2011 Bianco FB, Howell DA, Sullivan M, Conley A, Kasen D, Gonzlez-Gaitn S, Guy J, Astier P, Balland C, Carlberg RG, Fouchez D, Fourmanoit N, Hardin D, Hook I, Lidman C, et al. Constraining type Ia supernovae progenitors from three years of supernova legacy survey data Astrophysical Journal. 741. DOI: 10.1088/0004-637X/741/1/20  0.681
2011 Sullivan M, Guy J, Conley A, Regnault N, Astier P, Balland C, Basa S, Carlberg RG, Fouchez D, Hardin D, Hook IM, Howell DA, Pain R, Palanque-Delabrouille N, Perrett KM, et al. SNLS3: Constraints on dark energy combining the Supernova Legacy Survey three-year data with other probes Astrophysical Journal. 737. DOI: 10.1088/0004-637X/737/2/102  0.746
2011 Sullivan M, Kasliwal MM, Nugent PE, Howell DA, Thomas RC, Ofek EO, Arcavi I, Blake S, Cooke J, Gal-Yam A, Hook IM, Mazzali P, Podsiadlowski P, Quimby R, Bildsten L, et al. The subluminous and peculiar Type Ia supernova PTF09dav Astrophysical Journal. 732. DOI: 10.1088/0004-637X/732/2/118  0.784
2011 González-Gaitán S, Perrett K, Sullivan M, Conley A, Howell DA, Carlberg RG, Astier P, Balam D, Balland C, Basa S, Fouchez D, Guy J, Hardin D, Hook. IM, Pain R, et al. Subluminous Type Ia supernovae at high redshift from the Supernova Legacy Survey? Astrophysical Journal. 727. DOI: 10.1088/0004-637X/727/2/107  0.667
2011 Neill JD, Sullivan M, Gal-Yam A, Quimby R, Ofek E, Wyder TK, Howell DA, Nugent P, Seibert M, Martin DC, Overzier R, Barlow TA, Foster K, Friedman PG, Morrissey P, et al. The extreme hosts of extreme supernovae Astrophysical Journal. 727. DOI: 10.1088/0004-637X/727/1/15  0.747
2011 Krisciunas K, Li W, Matheson T, Howell DA, Stritzinger M, Aldering G, Berlind PL, Calkins M, Challis P, Chornock R, Conley A, Filippenko AV, Ganeshalingam M, Germany L, Gonzlez S, et al. The most slowly declining type Ia supernova 2001ay Astronomical Journal. 142. DOI: 10.1088/0004-6256/142/3/74  0.575
2011 Bazin G, Ruhlmann-Kleider V, Palanque-Delabrouille N, Rich J, Aubourg E, Astier P, Balland C, Basa S, Carlberg RG, Conley A, Fouchez D, Guy J, Hardin D, Hook IM, Howell DA, et al. Photometric selection of Type Ia supernovae in the Supernova Legacy Survey Astronomy and Astrophysics. 534. DOI: 10.1051/0004-6361/201116898  0.68
2011 Street RA, Lister TA, Tsapras Y, Shporer A, Bianco FB, Fulton BJ, Howell DA, Dilday B, Graham M, Sand D, Parent J, Brown T, Horne K, Dominik M, Browne P, et al. A global robotic telescope network for time-domain science Proceedings of the International Astronomical Union. 7: 408-410. DOI: 10.1017/S174392131200124X  0.629
2011 Howell DA. ERCP Management of Malignancy: Tissue Sampling, Metal Stent Placement and Ampullectomy Successful Training in Gastrointestinal Endoscopy. 313-323. DOI: 10.1002/9781444397772.ch26  0.45
2010 Howell DA, Roman E, Cox H, Smith AG, Patmore R, Garry AC, Howard MR. Destined to die in hospital? Systematic review and meta-analysis of place of death in haematological malignancy. Bmc Palliative Care. 9: 9. PMID 20515452 DOI: 10.1186/1472-684X-9-9  0.456
2010 Howell DA. Supernovae: A smashing success. Nature. 463: 35-6. PMID 20054383 DOI: 10.1038/463035a  0.455
2010 Lawrence C, Stefan AM, Howell DA. Endoscopic appearance of the minor papilla predicts findings at pancreatography. Digestive Diseases and Sciences. 55: 2412-6. PMID 19924537 DOI: 10.1007/s10620-009-1025-8  0.425
2010 Lukens FJ, Howell DA, Upender S, Sheth SG, Jafri SM. ERCP in the very elderly: outcomes among patients older than eighty. Digestive Diseases and Sciences. 55: 847-51. PMID 19337836 DOI: 10.1007/s10620-009-0784-6  0.483
2010 Sullivan M, Conley A, Howell DA, Neill JD, Astier P, Balland C, Basa S, Carlberg RG, Fouchez D, Guy J, Hardin D, Hook IM, Pain R, Palanque-Delabrouille N, Perrett KM, et al. The dependence of Type Ia Supernovae luminosities on their host galaxies Monthly Notices of the Royal Astronomical Society. 406: 782-802. DOI: 10.1111/J.1365-2966.2010.16731.X  0.58
2010 Jönsson J, Sullivan M, Hook I, Basa S, Carlberg R, Conley A, Fouchez D, Howell DA, Perrett K, Pritchet C. Constraining dark matter halo properties using lensed Supernova Legacy Survey supernovae Monthly Notices of the Royal Astronomical Society. 405: 535-544. DOI: 10.1111/J.1365-2966.2010.16467.X  0.682
2010 Pastorello A, Smartt SJ, Botticella MT, Maguire K, Fraser M, Smith K, Kotak R, Magill L, Valenti S, Young DR, Gezari S, Bresolin F, Kudritzki R, Howell DA, Rest A, et al. Ultra-bright optical transients are linked with type Ic supernovae Astrophysical Journal Letters. 724: L16-L21. DOI: 10.1088/2041-8205/724/1/L16  0.59
2010 Ofek EO, Rabinak I, Neill JD, Arcavi I, Cenko SB, Waxman E, Kulkarni SR, Gal-Yam A, Nugent PE, Bildsten L, Bloom JS, Filippenko AV, Forster K, Howell DA, Jacobsen J, et al. Supernova PTF 09uj: A possible shock breakout from a dense circumstellar wind Astrophysical Journal. 724: 1396-1401. DOI: 10.1088/0004-637X/724/2/1396  0.78
2010 Arcavi I, Gal-Yam A, Kasliwal MM, Quimby RM, Ofek EO, Kulkarni SR, Nugent PE, Cenko SB, Bloom JS, Sullivan M, Howell DA, Poznanski D, Filippenko AV, Law N, Hook I, et al. Core-collapse supernovae from the Palomar Transient Factory: Indications for a different population in dwarf galaxies Astrophysical Journal. 721: 777-784. DOI: 10.1088/0004-637X/721/1/777  0.776
2010 Amanullah R, Lidman C, Rubin D, Aldering G, Astier P, Barbary K, Burns MS, Conley A, Dawson KS, Deustua SE, Doi M, Fabbro S, Faccioli L, Fakhouri HK, Folatelli G, ... ... Howell DA, et al. Spectra and hubble space telescope light curves of six typE Ia supernovae at 0.511 < z < 1.12 and the union2 compilation Astrophysical Journal. 716: 712-738. DOI: 10.1088/0004-637X/716/1/712  0.566
2010 Perrett K, Balam D, Pritchet C, Conley A, Carlberg R, Astier P, Balland C, Basa S, Fouchez D, Guy J, Hardin D, Hook IM, Howell DA, Pain R, Regnault N, et al. Real-time analysis and selection biases in the Supernova Legacy Survey Astronomical Journal. 140: 518-532. DOI: 10.1088/0004-6256/140/2/518  0.655
2010 Graham ML, Pritchet CJ, Sullivan M, Howell DA, Gwyn SDJ, Astier P, Balland C, Basa S, Carlberg RG, Conley A, Fouchez D, Guy J, Hardin D, Hook IM, Pain R, et al. The type Ia supernova rate in radio and infrared galaxies from the Canada-France-Hawaii telescope supernova legacy survey Astronomical Journal. 139: 594-605. DOI: 10.1088/0004-6256/139/2/594  0.755
2010 Guy J, Sullivan M, Conley A, Regnault N, Astier P, Balland C, Basa S, Carlberg RG, Fouchez D, Hardin D, Hook IM, Howell DA, Pain R, Palanque-Delabrouille N, Perrett KM, et al. The Supernova Legacy Survey 3-year sample: Type Ia supernovae photometric distances and cosmological constraints Astronomy and Astrophysics. 523. DOI: 10.1051/0004-6361/201014468  0.761
2010 Kronborg T, Hardin D, Guy J, Astier P, Balland C, Basa S, Carlberg RG, Conley A, Fouchez D, Hook IM, Howell DA, Jönsson J, Pain R, Pedersen K, Perrett K, et al. Gravitational lensing in the supernova legacy survey (SNLS) Astronomy and Astrophysics. 514. DOI: 10.1051/0004-6361/200913642  0.578
2010 Palanque-Delabrouille N, Ruhlmann-Kleider V, Pascal S, Rich J, Guy J, Bazin G, Astier P, Balland C, Basa S, Carlberg RG, Conley A, Fouchez D, Hardin D, Hook IM, Howell DA, et al. Photometric redshifts for type Ia supernovae in the supernova legacy survey Astronomy and Astrophysics. 514. DOI: 10.1051/0004-6361/200913283  0.66
2010 Howell DA, Bakis G. ERCP and accessing the ampulla of vater in the bariatric patient Techniques in Gastrointestinal Endoscopy. 12: 153-159. DOI: 10.1016/j.tgie.2010.09.004  0.452
2010 Howell DA. Enhancing Quality and Comparability in the Comparative Study of Electoral Systems (CSES) Survey Methods in Multicultural, Multinational, and Multiregional Contexts. 525-534. DOI: 10.1002/9780470609927.ch30  0.455
2010 Yeh CS, Moffett TJ, Barry MD, Hecker MT, Howell DA, Green A, Gillespie GA, Hall CA, McNamee S. Enhancing sand screen reliability: An innovative, adaptive approach Proceedings - Spe Annual Technical Conference and Exhibition. 4: 2693-2701.  0.449
2009 Loew BJ, Howell DA, Sanders MK, Desilets DJ, Kortan PP, May GR, Shah RJ, Chen YK, Parsons WG, Hawes RH, Cotton PB, Slivka AA, Ahmad J, Lehman GA, Sherman S, et al. Comparative performance of uncoated, self-expanding metal biliary stents of different designs in 2 diameters: final results of an international multicenter, randomized, controlled trial Gastrointestinal Endoscopy. 70: 445-453. PMID 19482279 DOI: 10.1016/j.gie.2008.11.018  0.441
2009 Neill JD, Sullivan M, Howell DA, Conley A, Seibert M, Martin DC, Barlow TA, Foster K, Friedman PG, Morrissey P, Neff SG, Schiminovich D, Wyder TK, Bianchi L, Donas J, et al. The local hosts of type Ia supernovae Astrophysical Journal. 707: 1449-1465. DOI: 10.1088/0004-637X/707/2/1449  0.646
2009 Freedman WL, Burns CR, Phillips MM, Wyatt P, Persson SE, Madore BF, Contreras C, Folatelli G, Gonzalez ES, Hamuy M, Hsiao E, Kelson DD, Morrell N, Murphy DC, Roth M, ... ... Howell DA, et al. The carnegie supernova project: First near-infrared hubble diagram to z 0.7 Astrophysical Journal. 704: 1036-1058. DOI: 10.1088/0004-637X/704/2/1036  0.738
2009 Nobili S, Fadeyev V, Aldering G, Amanullah R, Barbary K, Burns MS, Dawson KS, Deustua SE, Faccioli L, Fruchter AS, Goldhaber G, Goobar A, Hook I, Howell DA, Kim AG, et al. Constraining dust and color variations of high-z sne using nicmos on the hubble space telescope Astrophysical Journal. 700: 1415-1427. DOI: 10.1088/0004-637X/700/2/1415  0.609
2009 Sullivan M, Ellis RS, Howell DA, Riess A, Nugent PE, Gal-Yam A. The mean type ia supernova spectrum over the past nine gigayears Astrophysical Journal. 693: L76-L80. DOI: 10.1088/0004-637X/693/2/L76  0.675
2009 Howell DA, Sullivan M, Brown EF, Conley A, Le Borgne D, Hsiao EY, Astier P, Balam D, Balland C, Basa S, Carlberg RG, Fouchez D, Guy J, Hardin D, Hook IM, et al. The effect of progenitor age and metallicity on luminosity and 56Ni yield in type Ia supernovae Astrophysical Journal. 691: 661-671. DOI: 10.1088/0004-637X/691/1/661  0.689
2009 Law NM, Kulkarni SR, Dekany RG, Ofek EO, Quimby RM, Nugent PE, Surace J, Grillmair CC, Bloom JS, Kasliwal MM, Bildsten L, Brown T, Cenko SB, Ciardi D, Croner E, ... ... Howell DA, et al. The palomar transient factory: System overview, performance, and first results Publications of the Astronomical Society of the Pacific. 121: 1395-1408. DOI: 10.1086/648598  0.763
2009 Rau A, Kulkarni SR, Law NM, Bloom JS, Ciardi D, Djorgovski GS, Fox DB, Gal-Yam A, Grillmair CC, Kasliwal MM, Nugent PE, Ofek EO, Quimby RM, Reach WT, Shara M, ... ... Howell DA, et al. Exploring the optical transient sky with the palomar transient factory Publications of the Astronomical Society of the Pacific. 121: 1334-1351. DOI: 10.1086/605911  0.768
2009 Regnault N, Conley A, Guy J, Sullivan M, Cuillandre JC, Astier P, Balland C, Basa S, Carlberg RG, Fouchez D, Hardin D, Hook IM, Howell DA, Pain R, Perrett K, et al. Photometric calibration of the supernova legacy survey fields Astronomy and Astrophysics. 506: 999-1042. DOI: 10.1051/0004-6361/200912446  0.638
2009 Balland C, Baumont S, Basa S, Mouchet M, Howell DA, Astier P, Carlberg RG, Conley A, Fouchez D, Guy J, Hardin D, Hook IM, Pain R, Perrett K, Pritchet CJ, et al. The ESO/VLT 3rd year Type Ia supernova data set from the supernova legacy survey Astronomy and Astrophysics. 507: 85-103. DOI: 10.1051/0004-6361/200912246  0.69
2009 Bazin G, Palanque-Delabrouille N, Rich J, Ruhlmann-Kleider V, Aubourg E, Le Guillou L, Astier P, Balland C, Basa S, Carlberg RG, Conley A, Fouchez D, Guy J, Hardin D, Hook IM, ... Howell DA, et al. The core-collapse rate from the Supernova Legacy Survey Astronomy and Astrophysics. 499: 653-660. DOI: 10.1051/0004-6361/200911847  0.664
2009 Yeh CS, Moffett TJ, Petrie DH, Entchev PB, Long TA, Troshko AA, Grubert MA, Dale BA, Barry MD, Hecker MT, Howell DA. Advancing self-mitigating sand control screen Society of Petroleum Engineers - International Petroleum Technology Conference 2009, Iptc 2009. 3: 1676-1682.  0.455
2008 Schawinski K, Justham S, Wolf C, Podsiadlowski P, Sullivan M, Steenbrugge KC, Bell T, Röser HJ, Walker ES, Astier P, Balam D, Balland C, Carlberg R, Conley A, Fouchez D, ... ... Howell DA, et al. Supernova shock breakout from a red supergiant. Science (New York, N.Y.). 321: 223-6. PMID 18556514 DOI: 10.1126/Science.1160456  0.674
2008 Attasaranya S, Cheon YK, Vittal H, Howell DA, Wakelin DE, Cunningham JT, Ajmere N, Ste Marie RW, Bhattacharya K, Gupta K, Freeman ML, Sherman S, McHenry L, Watkins JL, Fogel EL, et al. Large-diameter biliary orifice balloon dilation to aid in endoscopic bile duct stone removal: a multicenter series. Gastrointestinal Endoscopy. 67: 1046-52. PMID 18178208 DOI: 10.1016/j.gie.2007.08.047  0.446
2008 Howell DA, Smith AG, Roman E. Help-seeking behaviour in patients with lymphoma. European Journal of Cancer Care. 17: 394-403. PMID 18177393 DOI: 10.1111/j.1365-2354.2007.00897.x  0.479
2008 Lawrence C, Howell DA, Stefan AM, Conklin DE, Lukens FJ, Martin RF, Landes A, Benz B. Disconnected pancreatic tail syndrome: potential for endoscopic therapy and results of long-term follow-up. Gastrointestinal Endoscopy. 67: 673-9. PMID 18054008 DOI: 10.1016/j.gie.2007.07.017  0.471
2008 Graham ML, Pritchet CJ, Sullivan M, Gwyn SDJ, Neill JD, Hsiao EY, Astier P, Balam D, Balland C, Basa S, Carlberg RG, Conley A, Fouchez D, Guy J, Hardin D, ... ... Howell DA, et al. Type Ia supernovae rates and galaxy clustering from the CFHT supernova legacy survey Astronomical Journal. 135: 1343-1349. DOI: 10.1088/0004-6256/135/4/1343  0.718
2008 Pritchet CJ, Howell DA, Sullivan M. The progenitors of Type la supernovae Astrophysical Journal. 684: L25-L28. DOI: 10.1086/592001  0.544
2008 Pritchet CJ, Howell DA, Sullivan M. The progenitors of Type Ia supernovae Astrophysical Journal. 683: L25-L28. DOI: 10.1086/591314  0.658
2008 Carlberg RG, Sullivan M, Le Borgne D, Conley A, Howell DA, Perrett K, Astier P, Balam D, Balland C, Basa S, Hardin D, Fouchez D, Guy J, Hook I, Pain R, et al. Clustering of supernova ia host galaxies Astrophysical Journal. 682: L25-L28. DOI: 10.1086/590182  0.665
2008 Conley A, Sullivan M, Hsiao EY, Guy J, Astier P, Balam D, Balland C, Basa S, Carlberg RG, Fouchez D, Hardin D, Howell DA, Hook IM, Pain R, Perrett K, et al. SiFTO: An empirical method for fitting SN Ia light curves Astrophysical Journal. 681: 482-498. DOI: 10.1086/588518  0.648
2008 Ellis RS, Sullivan M, Nugent PE, Howell DA, Gal-Yam A, Astier P, Balam D, Balland C, Basa S, Carlberg RG, Conley A, Fouchez D, Guy J, Hardin D, Hook I, et al. Verifying the cosmological utility of type Ia supernovae: Implications of a dispersion in the ultraviolet spectra Astrophysical Journal. 674: 51-69. DOI: 10.1086/524981  0.692
2008 Baumont S, Balland C, Astier P, Guy J, Hardin D, Howell DA, Lidman C, Mouchet M, Pain R, Regnault N. PHotometry Assisted Spectral Extraction (PHASE) and identification of SNLS supernovae Astronomy and Astrophysics. 491: 567-585. DOI: 10.1051/0004-6361:200810210  0.547
2008 Bronder TJ, Hook IM, Astier P, Balam D, Balland C, Basa S, Carlberg RG, Conley A, Fouchez D, Guy J, Howell DA, Neill JD, Pain R, Perrett K, Pritchet CJ, et al. SNLS spectroscopy: Testing for evolution in type Ia supernovae Astronomy and Astrophysics. 477: 717-734. DOI: 10.1051/0004-6361:20077655  0.684
2008 Howell DA. Location, location, location: Does the relationship between knowledge sharing behavior and organizational commitment depend on where engineers are surveyed? 29th Annual National Conference of the American Society For Engineering Management 2008, Asem 2008. 417-426.  0.461
2007 Howell DA, Smith AG, Roman E. Referral pathways and diagnosis: UK government actions fail to recognize complexity of lymphoma. European Journal of Cancer Care. 16: 529-32. PMID 17944768 DOI: 10.1111/j.1365-2354.2007.00789.x  0.47
2007 Thomas M, Howell DA, Carr-Locke D, Mel Wilcox C, Chak A, Raijman I, Watkins JL, Schmalz MJ, Geenen JE, Catalano MF. Mechanical lithotripsy of pancreatic and biliary stones: complications and available treatment options collected from expert centers. The American Journal of Gastroenterology. 102: 1896-902. PMID 17573790 DOI: 10.1111/j.1572-0241.2007.01350.x  0.431
2007 Loew BJ, Lukens FJ, Navarro F, Roy M, Mattia A, Howell DA. Successful endoscopic resection of a gangliocytic paraganglioma of the minor papilla in a patient with pancreas divisum and pancreatitis (with video). Gastrointestinal Endoscopy. 65: 547-50. PMID 17145056 DOI: 10.1016/j.gie.2006.07.019  0.455
2007 Conley A, Carlberg RG, Guy J, Howell DA, Jha S, Riess AG, Sullivan M. Is there evidence for a hubble bubble? The nature of type Ia supernova colors and dust in external galaxies Astrophysical Journal. 664: L13-L16. DOI: 10.1086/520625  0.625
2007 Hsiao EY, Conley A, Howell DA, Sullivan M, Pritchet CJ, Carlberg RG, Nugent PE, Phillips MM. K-corrections and spectral templates of type Ia supernovae Astrophysical Journal. 663: 1187-1200. DOI: 10.1086/518232  0.642
2007 Neill JD, Sullivan M, Balam D, Pritchet CJ, Howell DA, Perrett K, Astier P, Aubourg E, Basa S, Carlberg RG, Conley A, Fabbro S, Fouchez D, Guy J, Hook I, et al. The supernova type ia rate evolution with SNLS Aip Conference Proceedings. 924: 421-424. DOI: 10.1063/1.2774890  0.566
2007 Bronder TJ, Hook I, Howell DA, Sullivan M, Perrett K, Conley A, Astier P, Basa S, Carlberg RG, Guy J, Pain R, Pritchet CJ, Neill JD. Quantitative spectroscopy of distant type Ia supernovae Aip Conference Proceedings. 924: 415-420. DOI: 10.1063/1.2774889  0.583
2007 Guy J, Astier P, Baumont S, Hardin D, Pain R, Regnault N, Basa S, Carlberg RG, Conley A, Fabbro S, Fouchez D, Hook IM, Howell DA, Perrett K, Pritchet CJ, et al. SALT2: Using distant supernovae to improve the use of type la supernovae as distance indicators Astronomy and Astrophysics. 466: 11-21. DOI: 10.1051/0004-6361:20066930  0.673
2007 Garavini G, Folatelli G, Nobili S, Aldering G, Amanullah R, Antilogus P, Astier P, Blanc G, Bronder T, Burns MS, Conley A, Deustua SE, Doi M, Fabbro S, Fadeyev V, ... ... Howell DA, et al. Quantitative comparison between type la supernova spectra at low and high redshifts: A case study Astronomy and Astrophysics. 470: 411-424. DOI: 10.1051/0004-6361:20065400  0.577
2007 Howell DA. Complications of Pancreatitis Advanced Digestive Endoscopy: Ercp. 281-308. DOI: 10.1002/9780470987490.ch11  0.471
2007 Howell DA, Sullivan M, Conley A, Carlberg R. Predicted and observed evolution in the mean properties of type Ia supernovae with redshift Astrophysical Journal. 667: L37-L40.  0.455
2007 Howell DA, Higgins C. Bond and development of deformed square reinforcing bars Aci Structural Journal. 104: 333-343.  0.447
2006 Eswaran SL, Sanders M, Bernadino KP, Ansari A, Lawrence C, Stefan A, Mattia A, Howell DA. Success and complications of endoscopic removal of giant duodenal and ampullary polyps: a comparative series. Gastrointestinal Endoscopy. 64: 925-32. PMID 17140900 DOI: 10.1016/j.gie.2006.06.018  0.473
2006 Howell DA, Sullivan M, Nugent PE, Ellis RS, Conley AJ, Le Borgne D, Carlberg RG, Guy J, Balam D, Basa S, Fouchez D, Hook IM, Hsiao EY, Neill JD, Pain R, et al. The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star. Nature. 443: 308-11. PMID 16988705 DOI: 10.1038/Nature05103  0.674
2006 Howell DA, Smith AG, Roman E. Lymphoma: variations in time to diagnosis and treatment. European Journal of Cancer Care. 15: 272-8. PMID 16882124 DOI: 10.1111/j.1365-2354.2006.00651.x  0.471
2006 Bohnacker S, Soehendra N, Maguchi H, Chung JB, Howell DA. Endoscopic resection of benign tumors of the papilla of vater. Endoscopy. 38: 521-5. PMID 16767591 DOI: 10.1055/s-2006-925263  0.458
2006 Lawrence C, Howell DA, Conklin DE, Stefan AM, Martin RF. Delayed pancreaticoduodenectomy for cancer patients with prior ERCP-placed, nonforeshortening, self-expanding metal stents: a positive outcome. Gastrointestinal Endoscopy. 63: 804-7. PMID 16650542 DOI: 10.1016/j.gie.2005.11.057  0.456
2006 Conley A, Howell DA, Howes A, Sullivan M, Astier P, Balam D, Basa S, Carlberg RG, Fouchez D, Guy J, Hook I, Neill JD, Pain R, Perrett K, Pritchet CJ, et al. The rise time of Type Ia supernovae from the supernova legacy survey Astronomical Journal. 132: 1707-1713. DOI: 10.1086/507788  0.684
2006 Sullivan M, Borgne DLE, Pritchet CJ, Hodsman A, Neill JD, Howell DA, Carlberg RG, Astier P, Aubourg E, Balam D, Basa S, Conley A, Fabbro S, Fouchez D, Guy J, et al. Rates and properties of type Ia supernovae as a function of mass and star formation in their host galaxies Astrophysical Journal. 648: 868-883. DOI: 10.1086/506137  0.68
2006 Neill JD, Sullivan M, Balam D, Pritchet CJ, Howell DA, Perrett K, Astier P, Aubourg E, Basa S, Carlberg RG, Conley A, Fabbro S, Fouchez D, Guy J, Hook I, et al. The type la supernova rate at z ≈ 0.5 from the supernova legacy survey Astronomical Journal. 132: 1126-1145. DOI: 10.1086/505532  0.648
2006 Nugent P, Sullian M, Elli R, Gal-Yam A, Leonard DC, Howell DA, Astier P, Carlberg RG, Conley A, Fabbro S, Fouchez D, Neill JD, Pain R, Perrett K, Pritchet CJ, et al. Toward a cosmological Hubble diagram for type II-P supernovae Astrophysical Journal. 645: 841-850. DOI: 10.1086/504413  0.64
2006 Conley A, Goldhaber G, Wang L, Aldering G, Amanullah R, Commins ED, Fadeyev V, Folatelli G, Garavini G, Gibbons R, Goobar A, Groom DE, Hook I, Howell DA, Kim AG, et al. Measurement of Ωm, ΩΛ from a blind analysis of Type Ia supernovae with CMAGIC: Using color information to verify the acceleration of the universe Astrophysical Journal. 644: 1-20. DOI: 10.1086/503533  0.511
2006 Sullivan M, Howell DA, Perrett K, Nugent PE, Astier P, Aubourg E, Balam D, Basa S, Carlberg RG, Conley A, Fabbro S, Fouchez D, Guy J, Hook I, Lafoux H, et al. Photometric selection of high-redshift type Ia supernova candidates Astronomical Journal. 131: 960-972. DOI: 10.1086/499302  0.66
2006 Howell DA, Shenton HW. System for in-service strain monitoring of ordinary bridges Journal of Bridge Engineering. 11: 673-680. DOI: 10.1061/(ASCE)1084-0702(2006)11:6(673)  0.455
2006 Astier P, Guy J, Regnault N, Pain R, Aubourg E, Balam D, Basa S, Carlberg RG, Fabbro S, Fouchez D, Hook IM, Howell DA, Lafoux H, Neill JD, Palanque-Delabrouille N, et al. The supernova legacy survey: Measurement of ΩM, ΩΛand w from the first year data set Astronomy and Astrophysics. 447: 31-48. DOI: 10.1051/0004-6361:20054185  0.678
2005 Howell DA, Lawrence C, Sheth S, Shah RJ. Dropped clip endoscope obstruction: recognition and management. Journal of Clinical Gastroenterology. 39: 549-50. PMID 15942445  0.455
2005 Hook IM, Howell DA, Aldering G, Amanullah R, Burns MS, Conley A, Deustua SE, Ellis R, Fabbro S, Fadeyev V, Folatelli G, Garavini G, Gibbons R, Goldhaber G, Goobar A, et al. Spectra of high-redshift type Ia supernovae and a comparison with their low-redshift counterparts Astronomical Journal. 130: 2788-2803. DOI: 10.1086/497635  0.603
2005 Howell DA, Sullivan M, Perrett K, Bronder TJ, Hook IM, Astier P, Aubourg E, Balam D, Basa S, Carlberg RG, Fabbro S, Fouchez D, Guy J, Lafoux H, Neill JD, et al. Gemini spectroscopy of supernovae from the supernova Legacy Survey: Improving high-redshift supernova selection and classification Astrophysical Journal. 634: 1190-1201. DOI: 10.1086/497119  0.686
2005 Garavini G, Aldering G, Amadon A, Amanullah R, Astier P, Ballanc G, Blanc G, Conley A, Dahlén T, Deustua SE, Ellis R, Fabbro S, Fadeyev V, Fan X, Folatelli G, ... ... Howell DA, et al. Spectroscopic observations and analysis of the unusual Type Ia SN 1999ac Astronomical Journal. 130: 2278-2292. DOI: 10.1086/444595  0.528
2005 Soderberg AM, Kulkarni SR, Fox DB, Berger E, Price PA, Cenko SB, Howell DA, Gal-Yam A, Leonard DC, Frail DA, Moon D, Chevalier RA, Hamuy M, Hurley KC, Kelson D, et al. An HST search for supernovae accompanying X-ray flashes Astrophysical Journal. 627: 877-887. DOI: 10.1086/430405  0.584
2005 Nobili S, Amanullah R, Garavini G, Goobar A, Lidman C, Stanishev V, Aldering G, Antilogus P, Astier P, Burns MS, Conley A, Deustua SE, Ellis R, Fabbro S, Fadeyev V, ... ... Howell DA, et al. Restframe I-band Hubble diagram for type la supernovae up to redshift z ∼ 0.5 Astronomy and Astrophysics. 437: 789-804. DOI: 10.1051/0004-6361:20042463  0.583
2005 Lidman C, Howell DA, Folatelli G, Garavini G, Nobili S, Aldering G, Amanullah R, Antilogus P, Astier P, Blanc G, Burns MS, Conley A, Deustua SE, Doi M, Ellis R, et al. Spectroscopic confirmation of high-redshift supernovae with the ESO VLT Astronomy and Astrophysics. 430: 843-851. DOI: 10.1051/0004-6361:20041504  0.581
2005 Howell DA, Shenton HW. A system for in-service strain monitoring of ordinary bridges Proceedings of the Structures Congress and Exposition. 67-73.  0.455
2004 Gelrud A, Sheth S, Banerjee S, Weed D, Shea J, Chuttani R, Howell DA, Telford JJ, Carr-Locke DL, Regan MM, Ellis L, Durie PR, Freedman SD. Analysis of cystic fibrosis gener product (CFTR) function in patients with pancreas divisum and recurrent acute pancreatitis. The American Journal of Gastroenterology. 99: 1557-62. PMID 15307877 DOI: 10.1111/j.1572-0241.2004.30834.x  0.422
2004 Catalano MF, Linder JD, Chak A, Sivak MV, Raijman I, Geenen JE, Howell DA. Endoscopic management of adenoma of the major duodenal papilla. Gastrointestinal Endoscopy. 59: 225-32. PMID 14745396 DOI: 10.1016/S0016-5107(03)02366-6  0.461
2004 Garavini G, Folatelli G, Goobar A, Nobili S, Aldering G, Amadon A, Amanullah R, Astier P, Balland C, Blanc G, Burns MS, Conley A, Dahlén T, Deustua SE, Ellis R, ... ... Howell DA, et al. Spectroscopic observations and analysis of the peculiar SN 1999aa Astronomical Journal. 128: 387-404. DOI: 10.1086/421747  0.551
2003 Farrell RJ, Howell DA, Pleskow DK. New technology for endoscopic retrograde cholangiopancreatography: improving safety, success, and efficiency. Gastrointestinal Endoscopy Clinics of North America. 13: 539-59. PMID 14986786 DOI: 10.1016/S1052-5157(03)00106-5  0.469
2003 Shah RJ, Howell DA, Desilets DJ, Sheth SG, Parsons WG, Okolo P, Lehman GA, Sherman S, Baillie J, Branch MS, Pleskow D, Chuttani R, Bosco JJ. Multicenter randomized trial of the spiral Z-stent compared with the Wallstent for malignant biliary obstruction. Gastrointestinal Endoscopy. 57: 830-6. PMID 12776028 DOI: 10.1016/S0016-5107(03)70016-9  0.451
2003 Knop RA, Aldering G, Amanullah R, Astier P, Blanc G, Burns MS, Conley A, Deustua SE, Doi M, Ellis R, Fabbro S, Folatelli G, Fruchter AS, Garavini G, Garmond S, ... ... Howell DA, et al. New constraints on ΩM, ΩΛ and w from an independent set of 11 high-redshift supernovae observed with the Hubble Space Telescope Astrophysical Journal. 598: 102-137. DOI: 10.1086/378560  0.762
2003 Kasen D, Nugent P, Wang L, Howell DA, Wheeler JC, Höflich P, Baade D, Baron E, Hauschildt PH. Analysis of the flux and polarization spectra of the type Ia supernova SN 2001el: Exploring the geometry of the high-velocity ejecta Astrophysical Journal. 593: 788-808. DOI: 10.1086/376601  0.635
2003 Sullivan M, Ellis RS, Aldering G, Amanullah R, Astier P, Blanc G, Burns MS, Conley A, Deustua SE, Doi M, Fabbro S, Folatelli G, Fruchter AS, Garavini G, Gibbons R, ... ... Howell DA, et al. The Hubble diagram of type Ia supernovae as a function of host galaxy morphology Monthly Notices of the Royal Astronomical Society. 340: 1057-1075. DOI: 10.1046/J.1365-8711.2003.06312.X  0.677
2003 Dollens KB, Larson DC, Anthony TL, Howell DA, Jones TA, Storbeck WG. The Redevelopment of a Mature Waterflood Through the Application of Horizontal Multilateral Drilling Technology in Preparation for Tertiary CO 2 WAG Operations Spe Reprint Series. 119-130.  0.494
2003 Howell DA, Shenton HW. An in-service bridge monitoring system Structural Health Monitoring and Intelligent Infrastructure - Proceedings of the 1st International Conference On Structural Health Monitoring and Intelligent Infrastructure. 2: 1103-1108.  0.455
2002 Sheth SG, Howell DA. What are really the true late complications of endoscopic biliary sphincterotomy? The American Journal of Gastroenterology. 97: 2699-701. PMID 12425534 DOI: 10.1111/j.1572-0241.2002.07051.x  0.455
2002 Aldering G, Adam G, Antilogus P, Astier P, Bacon R, Bongard S, Bonnaud C, Copin Y, Hardin D, Henault F, Howell DA, Lemonnier JP, Levy JM, Loken S, Nugent P, et al. Overview of the nearby supernova factory Proceedings of Spie - the International Society For Optical Engineering. 4836: 61-72. DOI: 10.1117/12.458107  0.302
2002 Pain R, Fabbro S, Sullivan M, Ellis RS, Aldering G, Astier P, Deustua SE, Fruchter AS, Goldhaber G, Goobar A, Groom DE, Hardin D, Hook IM, Howell DA, Irwin MJ, et al. The distant type Ia supernova rate Astrophysical Journal. 577: 120-132. DOI: 10.1086/342129  0.511
2001 Desilets DJ, Dy RM, Ku PM, Hanson BL, Elton E, Mattia A, Howell DA. Endoscopic management of tumors of the major duodenal papilla: Refined techniques to improve outcome and avoid complications. Gastrointestinal Endoscopy. 54: 202-8. PMID 11474391  0.46
2001 Pearson HA, Anunziato D, Baker JP, Gartner LM, Howell DA, Strain JE, Bolda Marshall S. Committee report: American Pediatrics: milestones at the millennium. Pediatrics. 107: 1482-91. PMID 11389283  0.455
2001 Howell DA, Höflich P, Wang L, Wheeler JC. Evidence for asphericity in a subluminous type la Supernova: Spectropolarimetry of SN 1999by Astrophysical Journal. 556: 302-321. DOI: 10.1086/321584  0.506
2000 Howell DA, Dy RM, Gerstein WH, Hanson BL, Biber BP. Infected pancreatic pseudocysts with colonic fistula formation successfully managed by endoscopic drainage alone: report of two cases. The American Journal of Gastroenterology. 95: 1821-3. PMID 10925992 DOI: 10.1111/j.1572-0241.2000.02162.x  0.455
1999 Howell DA, Dy RM, Hanson BL, Nezhad SF, Broaddus SB. Endoscopic treatment of pancreatic duct stones using a 10F pancreatoscope and electrohydraulic lithotripsy. Gastrointestinal Endoscopy. 50: 829-33. PMID 10570346  0.455
1999 Howell DA. Pancreatic stones: treat or ignore? Canadian Journal of Gastroenterology = Journal Canadien De Gastroenterologie. 13: 461-5. PMID 10464344  0.455
1999 Howell DA, Nezhad SF, Dy RM. Endoscopically placed Gianturco endoprosthesis in the treatment of malignant and benign biliary obstruction. Gastrointestinal Endoscopy Clinics of North America. 9: 479-90. PMID 10388862  0.455
1998 Elton E, Hanson BL, Biber BP, Howell DA. Dilated common channel syndrome: endoscopic diagnosis, treatment, and relationship to choledochocele formation. Gastrointestinal Endoscopy. 47: 471-8. PMID 9647371 DOI: 10.1016/S0016-5107(98)70247-0  0.443
1998 Elton E, Howell DA, Parsons WG, Qaseem T, Hanson BL. Endoscopic pancreatic sphincterotomy: indications, outcome, and a safe stentless technique. Gastrointestinal Endoscopy. 47: 240-9. PMID 9540876 DOI: 10.1016/S0016-5107(98)70320-7  0.482
1998 Cotton PB, Geenen JE, Sherman S, Cunningham JT, Howell DA, Carr-Locke DL, Nickl NJ, Hawes RH, Lehman GA, Ferrari A, Slivka A, Lichtenstein DR, Baillie J, Jowell PS, Lail LM, et al. Endoscopic sphincterotomy for stones by experts is safe, even in younger patients with normal ducts. Annals of Surgery. 227: 201-4. PMID 9488517 DOI: 10.1097/00000658-199802000-00008  0.422
1998 Elton E, Hanson BL, Qaseem T, Howell DA. Diagnostic and therapeutic ERCP using an enteroscope and a pediatric colonoscope in long-limb surgical bypass patients. Gastrointestinal Endoscopy. 47: 62-7. PMID 9468425 DOI: 10.1016/S0016-5107(98)70300-1  0.455
1998 Howell DA, Elton E, Parsons WG. Endoscopic management of pseudocysts of the pancreas. Gastrointestinal Endoscopy Clinics of North America. 8: 143-62. PMID 9405756  0.442
1997 Elton E, Howell DA, Amberson SM, Dykes TA. Combined angiographic and endoscopic management of bleeding pancreatic pseudoaneurysms. Gastrointestinal Endoscopy. 46: 544-9. PMID 9434224  0.455
1996 Howell DA, Parsons WG, Jones MA, Bosco JJ, Hanson BL. Complete tissue sampling of biliary strictures at ERCP using a new device. Gastrointestinal Endoscopy. 43: 498-502. PMID 8726766  0.455
1996 Marshall GT, Howell DA, Hansen BL, Amberson SM, Abourjaily GS, Bredenberg CE. Multidisciplinary approach to pseudoaneurysms complicating pancreatic pseudocysts. Impact of pretreatment diagnosis. Archives of Surgery (Chicago, Ill. : 1960). 131: 278-83. PMID 8611093  0.44
1995 Martin RF, Hanson BL, Bosco JJ, Erkkinen JF, Broaddus SB, Goldfarb WB, Howell DA. Combined modality treatment of symptomatic pancreatic ductal lithiasis. Archives of Surgery (Chicago, Ill. : 1960). 130: 375-9; discussion 37. PMID 7710335  0.455
1994 Bosco JJ, Gordon F, Zelig MP, Heiss F, Horst DA, Howell DA. A reliable method for the endoscopic placement of a nasoenteric feeding tube. Gastrointestinal Endoscopy. 40: 740-3. PMID 7859974  0.455
1993 Howell DA, Holbrook RF, Bosco JJ, Muggia RA, Biber BP. Endoscopic needle localization of pancreatic pseudocysts before transmural drainage. Gastrointestinal Endoscopy. 39: 693-8. PMID 8224695  0.455
1992 Howell DA, Bosco JJ, Sampson LN, Bula V. Endoscopic management of cystic duct fistulas after laparoscopic cholecystectomy. Endoscopy. 24: 796-8. PMID 1468402 DOI: 10.1055/s-2007-1010588  0.454
1992 Martin RF, Biber BP, Bosco JJ, Howell DA. Symptomatic choledochoceles in adults. Endoscopic retrograde cholangiopancreatography recognition and management. Archives of Surgery (Chicago, Ill. : 1960). 127: 536-8; discussion 53. PMID 1374228 DOI: 10.1001/archsurg.1992.01420050056007  0.469
1992 Howell DA, Beveridge RP, Bosco J, Jones M. Endoscopic needle aspiration biopsy at ERCP in the diagnosis of biliary strictures. Gastrointestinal Endoscopy. 38: 531-5. PMID 1327937  0.462
1991 Holbrook RF, Jacobson FL, Pezzuti RT, Howell DA. Biliary patency imaging after endoscopic retrograde sphincterotomy with gallbladder in situ. Clinical impact of nonvisualization. Archives of Surgery (Chicago, Ill. : 1960). 126: 738-41; discussion 7. PMID 2039361  0.455
1990 Bach MC, Howell DA, Valenti AJ, Smith TJ, Winslow DL. Aphthous ulceration of the gastrointestinal tract in patients with the acquired immunodeficiency syndrome (AIDS). Annals of Internal Medicine. 112: 465-7. PMID 2310108  0.455
1988 Bach MC, Valenti AJ, Howell DA, Smith TJ. Odynophagia from aphthous ulcers of the pharynx and esophagus in the acquired immunodeficiency syndrome (AIDS). Annals of Internal Medicine. 109: 338-9. PMID 3395042  0.455
1988 Howell DA. Colonoscopic screening for colon cancer. Gastroenterology. 95: 576-7. PMID 3391377  0.455
1987 Zilinskas BA, Howell DA. Immunological conservation of phycobilisome rod linker polypeptides. Plant Physiology. 85: 322-6. PMID 16665695 DOI: 10.1104/Pp.85.2.322  0.411
1986 Zilinskas BA, Howell DA. The immunologically conserved phycobilisome-thylakoid linker polypeptide. Plant Physiology. 80: 829-33. PMID 16664726  0.455
1983 Zilinskas BA, Howell DA. Role of the Colorless Polypeptides in Phycobilisome Assembly in Nostoc sp. Plant Physiology. 71: 379-87. PMID 16662834  0.455
1981 Forssell PL, Bonkowsky HL, Anderson PB, Howell DA. Intrahepatic hematoma after aspiration liver biopsy. A prospective randomized trial using two different needles. Digestive Diseases and Sciences. 26: 631-5. PMID 7249899  0.455
1981 Hayward ML, Howell DA, O'Donnell JF, Maurer LH. Hypercalcemia complicating small-cell carcinoma. Cancer. 48: 1643-6. PMID 6269721  0.455
1980 Almy TP, Howell DA. Medical progress. Diverticular disease of the colon. The New England Journal of Medicine. 302: 324-31. PMID 6985709 DOI: 10.1056/NEJM198002073020605  0.455
1980 Brisbane JU, Howell DA, Bonkowsky HL. Pulmonary hypertension as a presentation of hepatocarcinoma. Report of a case and brief review of the literature. The American Journal of Medicine. 68: 466-9. PMID 6244734  0.455
1980 Shephard RH, Howell DA. "I can no longer hear the silence of lamp posts". Lancet (London, England). 2: 706. PMID 6106822  0.455
1979 Howell DA, Lees AJ, Toghill PJ. Spinal internuncial neurones in progressive encephalomyelitis with rigidity. Journal of Neurology, Neurosurgery, and Psychiatry. 42: 773-85. PMID 501376  0.455
1979 Howell DA. Gallstone ileus. Unusual roentgenographic manifestations of a case. The Journal of the Maine Medical Association. 70: 236-8. PMID 458262  0.455
1979 Howell DA. Clinical and pathological consequences of lumps and swellings inside the cranium. British Journal of Hospital Medicine. 21: 60-6. PMID 435669  0.455
1979 Howell DA. Radiation myelopathy. Developmental Medicine and Child Neurology. 21: 653-6. PMID 389717  0.455
1979 Twomey JA, Barker CM, Robinson G, Howell DA. Olfactory mucosa in herpes simplex encephalitis. Journal of Neurology, Neurosurgery, and Psychiatry. 42: 983-7. PMID 228010  0.455
1977 Davies D, Howell DA. Tranexamic acid and arterial thrombosis. Lancet (London, England). 1: 49. PMID 63691  0.455
1975 Godwin-Austen RB, Howell DA, Worthington B. Observations on radiation myelopathy. Brain : a Journal of Neurology. 98: 557-68. PMID 1218367  0.455
1975 Godwin-Austen RB, Howell DA, Worthington BS. Proceedings: A combined clinico-pathological and radiological study of radiation myelopathy. The British Journal of Radiology. 48: 608-9. PMID 1148604  0.455
1970 Matthews WB, Howell DA, Hughes RD. Relapsing corticosteroid-dependent polyneuritis. Journal of Neurology, Neurosurgery, and Psychiatry. 33: 330-7. PMID 4317289  0.455
1969 Matthews WB, Howell DA, Stevens DL. Progressive myoclonus epilepsy without Lafora bodies. Journal of Neurology, Neurosurgery, and Psychiatry. 32: 116-22. PMID 5783287  0.455
1968 Howell DA, Jellinek EH, Gavrilescu K. Demyelinating disease in a woman from tropical South America with features of multiple sclerosis and neuromyelitis optica. Clinical, protein chemistry and pathological findings. Journal of the Neurological Sciences. 7: 115-35. PMID 4301360  0.455
1968 Howell DA. The fragile neonate. Journal of the American Medical Women's Association. 23: 615-7. PMID 4247128  0.455
1967 Howell DA. A child dies. Hospital Topics. 45: 93-6 passim. PMID 6016450 DOI: 10.1080/00185868.1967.9952015  0.455
1967 Howell DA. Benign diseases of childhood. Examination of the normal female newborn. Annals of the New York Academy of Sciences. 142: 614-7. PMID 5231248  0.455
1966 Howell DA. A child dies. Seminars in Hematology. 3: 168-73. PMID 5929648  0.455
1965 Dexter D, Howell DA. Medulloblastomas and arachnoidal sarcomas. Brain : a Journal of Neurology. 88: 367-74. PMID 5828908  0.455
1964 HOWELL DA, FLOWERS CE. RECENT ADVANCES IN THE TREATMENT OF HEMOLYTIC DISEASE OF THE NEWBORN. Clinical Obstetrics and Gynecology. 10: 945-56. PMID 14234047  0.455
1964 VOST A, WOLOCHOW DA, HOWELL DA. INCIDENCE OF INFARCTS OF THE BRAIN IN HEART DISEASES. The Journal of Pathology and Bacteriology. 88: 463-70. PMID 14226418  0.455
1964 MENGEL CE, HYMAN BN, O'MALLEY BW, HOWELL DA. [1ST LATINAMERICAN SEMINAR ON OCCUPATIONAL HEALTH]. BoletíN De La Oficina Sanitaria Panamericana. Pan American Sanitary Bureau. 57: 329-36. PMID 14220790  0.455
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