Search

Your search keyword '"Willard, John"' showing total 472 results
Start Over Author "Willard, John"
472 results on '"Willard, John"'

1. Coronal Heating as Determined by the Solar Flare Frequency Distribution Obtained by Aggregating Case Studies

Author

Mason, James Paul, Werth, Alexandra, West, Colin G., Youngblood, Allison A., Woodraska, Donald L., Peck, Courtney, Lacjak, Kevin, Frick, Florian G., Gabir, Moutamen, Alsinan, Reema A., Jacobsen, Thomas, Alrubaie, Mohammad, Chizmar, Kayla M., Lau, Benjamin P., Dominguez, Lizbeth Montoya, Price, David, Butler, Dylan R., Biron, Connor J., Feoktistov, Nikita, Dewey, Kai, Loomis, N. E., Bodzianowski, Michal, Kuybus, Connor, Dietrick, Henry, Wolfe, Aubrey M., Guerrero, Matt, Vinson, Jessica, Starbuck, Peter, Litton, Shelby D, Beck, M. G., Fisch, Jean-Paul, West, Ayana, Muniz, Alexis A., Chavez, Luis, Upthegrove, Zachary T., Runyon, Brenton M., Salazar, J., Kritzberg, Jake E., Murrel, Tyler, Ho, Ella, LaFemina, Quintin Y., Elbashir, Sara I., Chang, Ethan C., Hudson, Zachary A., Nussbaum, Rosemary O., Kennedy, Kellen, Kim, Kevin, Arango, Camila Villamil, Albakr, Mohammed A., Rotter, Michael, Garscadden, A. J., Salcido-Alcontar JR, Antonio, Pearl, Harrison M., Stepaniak, Tyler, Marquez, Josie A., Marsh, Lauren, Andringa, Jesse C, Osogwin, Austin, Shields, Amanda M., Brookins, Sarah, Hach, Grace K., Clausi, Alexis R., Millican, Emily B., Jaimes, Alan A, Graham, Alaina S., Burritt, John J., Perez, J. S., Ramirez, Nathaniel, Suri, Rohan, Myer, Michael S., Kresek, Zoe M., Goldsberry, C. A., Payne, Genevieve K., Jourabchi, Tara, Hu, J., Lucca, Jeffrey, Feng, Zitian, Gilpatrick, Connor B., Khan, Ibraheem A., Warble, Keenan, Sweeney, Joshua D., Dorricott, Philip, Meyer, Ethan, Kothamdi, Yash S., Sohail, Arman S., Grell, Kristyn, Floyd, Aidan, Bard, Titus, Mathieson, Randi M., Reed, Joseph, Cisneros, Alexis, Payne, Matthew P., Jarriel, J. R., Mora, Jacqueline Rodriguez, Sundell, M. E., Patel, Kajal, Alesmail, Mohammad, Alnasrallah, Yousef A, Abdullah, Jumana T., Molina-Saenz, Luis, Tayman, K. E., Brown, Gabriel T., Kerr-Layton, Liana, Berriman-Rozen, Zachary D., Hiatt, Quinn, Kalra, Etash, Ong, Jason, Vadayar, Shreenija, Shannahan, Callie D., Benke, Evan, zhang, Jinhua, Geisman, Jane, Martyr, Cara, Ameijenda, Federico, Akruwala, Ushmi H., Nehring, Molly, Kissner, Natalie, Rule, Ian C., Learned, Tyler, Smith, Alexandra N., Mazzotta, Liam, Rounsefell, Tyndall, Eyeson, Elizabeth A., Shelby, Arlee K., Moll, Tyler S, Menke, Riley, Shahba, Hannan, House Jr., Tony A., Clark, David B., Burns, Annemarie C., de La Beaujardiere, Tristan, Trautwein, Emily D., Plantz, Will, Reeves, Justin, Faber, Ian, Buxton, B. W., Highhouse, Nigel, Landrey, Kalin, Hansen, Connor M, Chen, Kevin, Hales, Ryder Buchanan, Borgerding, Luke R., Guo, Mutian, Crow, Christian J., Whittall, Lloyd C., Simmons, Conor, Folarin, Adeduni, Parkinson, Evan J., Rahn, Anna L., Blevins, Olivia, Morelock, Annalise M., Kelly, Nicholas, Parker, Nathan L., Smith, Kelly, Plzak, Audrey E., Saeb, David, Hares, Cameron T., Parker, Sasha R., McCoy, Andrew, Pham, Alexander V., Lauzon, Megan, Kennedy, Cayla J., Reyna, Andrea B., Acosta, Daniela M. Meza, Cool, Destiny J., Steinbarth, Sheen L., Mendoza-Anselmi, Patricia, Plutt, Kaitlyn E., Kipp, Isabel M, Rakhmonova, M., Brown, Cameron L., Van Anne, Gabreece, Moss, Alexander P., Golden, Olivia, Kirkpatrick, Hunter B., Colleran, Jake R., Sullivan, Brandon J, Tran, Kevin, Carpender, Michael Andrew, Mundy, Aria T., Koenig, Greta, Oudakker, Jessica, Engelhardt, Rasce, Ales, Nolan, Wexler, Ethan Benjamin, Beato, Quinn I, Chen, Lily, Cochran, Brooke, Hill, Paula, Hamilton, Sean R., Hashiro, Kyle, Khan, Usman, Martinez, Alexa M., Brockman, Jennifer L., Mallory, Macguire, Reed, Charlie, Terrile, Richard, Singh, Savi, Watson, James Adam, Creany, Joshua B., Price, Nicholas K., Miften, Aya M., Tran, Bryn, Kamenetskiy, Margaret, Martinez, Jose R., Opp, Elena N., Huang, Jianyang, Fails, Avery M., Belei, Brennan J., Slocum, Ryan, Astalos, Justin, East, Andrew, Nguyen, Lena P., Pherigo, Callie C, East, Andrew N., Li, David Y., Nelson, Maya LI, Taylor, Nicole, Odbayar, Anand, Rives, Anna Linnea, Mathur, Kabir P., Billingsley, Jacob, Polikoff, Hyden, Driscoll, Michael, Wilson, Orion K., Lahmers, Kyle, Toon, Nathaniel J., Lippincott, Sam, Musgrave, Andrew J., Gregory, Alannah H., Pitsuean-Meier, Sedique, Jesse, Trevor, Smith, Corey, Miles, Ethan J., Kainz, Sabrina J. H. T., Ji, Soo Yeun, Nguyen, Lena, Aryan, Maryam, Dinser, Alexis M., Shortman, Jadon, Bastias, Catalina S, Umbricht, Thomas D, Cage, Breonna, Randolph, Parker, Pollard, Matthew, Simone, Dylan M., Aramians, Andrew, Brecl, Ariana E., Robert, Amanda M., Zenner, Thomas, Saldi, Maxwell, Morales, Gavin, Mendez, Citlali, Syed, Konner, Vogel, Connor Maklain, Cone, Rebecca A., Berhanu, Naomi, Carpenter, Emily, Leoni, Cecilia, Bryan, Samuel, Ramachandra, Nidhi, Shaw, Timothy, Lee, E. C., Monyek, Eli, Wegner, Aidan B., Sharma, Shajesh, Lister, Barrett, White, Jamison R., Willard, John S., Sulaiman, S. A, Blandon, Guillermo, Narayan, Anoothi, Ruger, Ryan, Kelley, Morgan A., Moreno, Angel J., Balcer, Leo M, Ward-Chene, N. R. D., Shelby, Emma, Reagan, Brian D., Marsh, Toni, Sarkar, Sucheta, Kelley, Michael P., Fell, Kevin, Balaji, Sahana, Hildebrand, Annalise K., Shoha, Dominick, Nandu, Kshmya, Tucker, Julia, Cancio, Alejandro R., Wang, Jiawei, Rapaport, Sarah Grace, Maravi, Aimee S., Mayer, Victoria A., Miller, Andrew, Bence, Caden, Koke, Emily, Fauntleroy, John T, Doermer, Timothy, Al-Ghazwi, Adel, Morgan, Remy, Alahmed, Mohammed S., Mathavan, Adam Izz Khan Mohd Reduan, Silvester, H. K., Weiner, Amanda M., Liu, Nianzi, Iovan, Taro, Jensen, Alexander V., AlHarbi, Yazeed A., Jiang, Yufan, Zhang, Jiaqi, Jones, Olivia M., Huang, Chenqi, Reh, Eileen N., Alhamli, Dania, Pettine, Joshua, Zhou, Chongrui, Kriegman, Dylan, Yang, Jianing, Ash, Kevin, Savage, Carl, Kaiser, Emily, Augenstein, Dakota N., Padilla, Jacqueline, Stark, Ethan K., Hansen, Joshua A., Kokes, Thomas, Huynh, Leslie, Sanchez-Sanchez, Gustavo, Jeseritz, Luke A., Carillion, Emma L., Vepa, Aditya V., Khanal, Sapriya, Behr, Braden, Martin, Logan S., McMullan, Jesse J., Zhao, Tianwei, Williams, Abigail K., Alqabani, Emeen, Prinster, Gale H., Horne, Linda, Ruggles-Delgado, Kendall, Otto, Grant, Gomez, Angel R., Nguyen, Leonardo, Brumley, Preston J., Venegas, Nancy Ortiz, Varela, Ilian, Brownlow, Jordi, Cruz, Avril, Leiker, Linzhi, Batra, Jasleen, Hutabarat, Abigail P., Nunes-Valdes, Dario, Jameson, Connor, Naqi, Abdulaziz, Adams, Dante Q., Biediger, Blaine B., Borelli, William T, Cisne, Nicholas A., Collins, Nathaniel A., Curnow, Tyler L., Gopalakrishnan, Sean, Griffin, Nicholas F., Herrera, Emanuel, McGarvey, Meaghan V., Mellett, Sarah, Overchuk, Igor, Shaver, Nathan, Stratmeyer, Cooper N., Vess, Marcus T., Juels, Parker, Alyami, Saleh A., Gale, Skylar, Wallace, Steven P., Hunter, Samuel C, Lonergan, Mia C., Stewart, Trey, Maksimuk, Tiffany E., Lam, Antonia, Tressler, Judah, Napoletano, Elena R., Miller, Joshua B., Roy, Marc G., Chanders, Jasey, Fischer, Emmalee, Croteau, A. J., Kuiper, Nicolas A., Hoffman, Alex, DeBarros, Elyse, Curry, Riley T., Brzostowicz, A., Courtney, Jonas, Zhao, Tiannie, Szabo, Emi, Ghaith, Bandar Abu, Slyne, Colin, Beck, Lily, Quinonez, Oliver, Collins, Sarah, Madonna, Claire A., Morency, Cora, Palizzi, Mallory, Herwig, Tim, Beauprez, Jacob N., Ghiassi, Dorsa, Doran, Caroline R., Yang, Zhanchao, Padgette, Hannah M., Dicken, Cyrus A., Austin, Bryce W., Phalen, Ethan J., Xiao, Catherine, Palos, Adler, Gerhardstein, Phillip, Altenbern, Ava L., Orbidan, Dan, Dorr, Jackson A., Rivas, Guillermo A., Ewing, Calvin A, Giebner, B. C., McEntee, Kelleen, Kite, Emily R., Crocker, K. A., Haley, Mark S., Lezak, Adrienne R., McQuaid, Ella, Jeong, Jacob, Albaum, Jonathan, Hrudka, E. M., Mulcahy, Owen T., Tanguma, Nolan C., Oishi-Holder, Sean, White, Zachary, Coe, Ryan W., Boyer, Christine, Chapman, Mitchell G., Fortino, Elise, Salgado, Jose A., Hellweg, Tim, Martinez, Hazelia K., Mitchell, Alexander J., Schubert, Stephanie H., Schumacher, Grace K, Tesdahl, Corey D, Uphoff, C. H., Vassilyev, Alexandr, Witkoff, Briahn, Wolle, Jackson R., Dice, Kenzie A., Behrer, Timothy A., Bowen, Troy, Campbell, Andrew J, Clarkson, Peter C, Duong, Tien Q., Hawat, Elijah, Lopez, Christian, Olson, Nathaniel P., Osborn, Matthew, Peou, Munisettha E., Vaver, Nicholas J., Husted, Troy, Kallemeyn, Nicolas Ian, Spangler, Ava A, Mccurry, Kyle, Schultze, Courtney, Troisi, Thomas, Thomas, Daniel, Ort, Althea E., Singh, Maya A., Soon, Caitlin, Patton, Catherine, Billman, Jayce A., Jarvis, Sam, Hitt, Travis, Masri, Mirna, Albalushi, Yusef J., Schofer, Matthew J, Linnane, Katherine B., Knott, Philip Whiting, Valencia, Whitney, Arias-Robles, Brian A., Ryder, Diana, Simone, Anna, Abrams, Jonathan M., Belknap, Annelene L., Rouse, Charlotte, Reynolds, Alexander, Petric, Romeo S. L., Gomez, Angel A., Meiselman-Ashen, Jonah B., Carey, Luke, Dias, John S., Fischer-White, Jules, Forbes, Aidan E., Galarraga, Gabriela, Kennedy, Forrest, Lawlor, Rian, Murphy, Maxwell J., Norris, Cooper, Quarderer, Josh, Waller, Caroline, Weber, Robert J., Gunderson, Nicole, Boyne, Tom, Gregory, Joshua A., Propper, Henry Austin, von Peccoz, Charles B. Beck, Branch, Donovan, Clarke, Evelyn, Cutler, Libby, Dabberdt, Frederick M., Das, Swagatam, Figueirinhas, John Alfred D., Fougere, Benjamin L., Roy, Zoe A., Zhao, Noah Y., Cox, Corben L., Barnhart, Logan D. W., Craig, Wilmsen B., Moll, Hayden, Pohle, Kyle, Mueller, Alexander, Smith, Elena K., Spicer, Benjamin C., Aycock, Matthew C., Bat-Ulzii, Batchimeg, Murphy, Madalyn C., Altokhais, Abdullah, Thornally, Noah R., Kleinhaus, Olivia R., Sarfaraz, Darian, Barnes, Grant M., Beard, Sara, Banda, David J, Davis, Emma A. B., Huebsch, Tyler J., Wagoner, Michaela, Griego, Justus, Hale, Jack J. Mc, Porter, Trevor J., Abrashoff, Riley, Phan, Denise M., Smith, Samantha M., Srivastava, Ashish, Schlenker, Jared A. W., Madsen, Kasey O., Hirschmann, Anna E., Rankin, Frederick C, Akbar, Zainab A., Blouin, Ethan, Coleman-Plante, Aislinn, Hintsa, Evan, Lookhoff, Emily, Amer, Hamzi, Deng, Tianyue, Dvorak, Peter, Minimo, Josh, Plummer, William C., Ton, Kelly, Solt, Lincoln, AlAbbas, Batool H., AlAwadhi, Areej A., Cooper, Nicholas M., Corbitt, Jessica S, Dunlap, Christian, Johnson, Owen, Malone, Ryan A., Tellez, Yesica, Wallace, Logan, Ta, Michael-Tan D., Wheeler, Nicola H., Ramirez, Ariana C., Huang, Shancheng, Mehidic, Amar, Christiansen, Katherine E, Desai, Om, Domke, Emerson N., Howell, Noah H., Allsbrook, Martin, Alnaji, Teeb, England, Colin, Siles, Nathan, Burton, Nicholas David, Cruse, Zoe, Gilmartin, Dalton, Kim, Brian T., Hattendorf, Elsie, Buhamad, Maryam, Gayou, Lily, Seglem, Kasper, Alkhezzi, Tameem, Hicks, Imari R., Fife, Ryann, Pelster, Lily M., Fix, Alexander, Sur, Sohan N., Truong, Joshua K., Kubiak, Bartlomiej, Bondar, Matthew, Shi, Kyle Z., Johnston, Julia, Acevedo, Andres B., Lee, Junwon, Solorio, William J., Johnston, Braedon Y., McCormick, Tyler, Olguin, Nicholas, Pastor, Paige J., Wilson, Evan M., Trunko, Benjamin L., Sjoroos, Chris, Adams, Kalvyn N, Bell, Aislyn, Brumage-Heller, Grant, Canales, Braden P., Chiles, Bradyn, Driscoll, Kailer H., Hill, Hallie, Isert, Samuel A., Ketterer, Marilyn, Kim, Matthew M., Mewhirter, William J., Phillips, Lance, Phommatha, Krista, Quinn, Megan S., Reddy, Brooklyn J., Rippel, Matthew, Russell, Bowman, Williams, Sajan, Pixley, Andrew M., Gapin, Keala C., Peterson, B., Ruprecht, Collin, Hardie, Isabelle, Li, Isaac, Erickson, Abbey, Gersabeck, Clint, Gopalani, Mariam, Allanqawi, Nasser, Burton, Taylor, Cahn, Jackson R., Conti, Reese, White, Oliver S., Rojec, Stewart, Hogen, Blake A., Swartz, Jason R., Dick, R., Battist, Lexi, Dunn, Gabrielle M., Gasser, Rachel, Logan, Timothy W., Sinkovic, Madeline, Schaller, Marcus T., Heintz, Danielle A., Enrich, Andrew, Sanchez, Ethan S., Perez, Freddy, Flores, Fernando, Kapla, Shaun D., Shockley, Michael C., Phillips, Justin, Rumley, Madigan, Daboub, Johnston, Karsh, Brennan J., Linders, Bridget, Chen, Sam, Do, Helen C., Avula, Abhinav, French, James M., Bertuccio, Chrisanna, Hand, Tyler, Lee, Adrianna J., Neeland, Brenna K, Salazar, Violeta, Andrew, Carter, Barmore, Abby, Beatty, Thomas, Alonzi, Nicholas, Brown, Ryan, Chandler, Olivia M., Collier, Curran, Current, Hayden, Delasantos, Megan E., Bonilla, Alberto Espinosa de los Monteros, Fowler, Alexandra A., Geneser, Julianne R., Gentry, Eleanor, Gustavsson, E. R., Hansson, Jonathan, Hao, Tony Yunfei, Herrington, Robert N., Kelly, James, Kelly, Teagan, Kennedy, Abigail, Marquez, Mathew J., Meillon, Stella, Palmgren, Madeleine L., Pesce, Anneliese, Ranjan, Anurag, Robertson, Samuel M., Smith, Percy, Smith, Trevor J, Soby, Daniel A., Stratton, Grant L., Thielmann, Quinn N., Toups, Malena C., Veta, Jenna S., Young, Trenton J., Maly, Blake, Manzanares, Xander R., Beijer, Joshua, George, Jacob D., Mills, Dylan P., Ziebold, Josh J, Chambers, Paige, Montoya, Michael, Cheang, Nathan M., Anderson, Hunter J., Duncan, Sheridan J., Ehrlich, Lauren, Hudson, Nathan C., Kiechlin, Jack L., Koch, Will, Lee, Justin, Menassa, Dominic, Oakes, S. H., Petersen, Audrey J., Bunsow, J. R. Ramirez, Bay, Joshua, Ramirez, Sacha, Fenwick, Logan D., Boyle, Aidan P., Hibbard, Lea Pearl, Haubrich, Calder, Sherry, Daniel P., Jenkins, Josh, Furney, Sebastian, Velamala, Anjali A., Krueger, Davis J., Thompson, William N., Chhetri, Jenisha, Lee, Alexis Ying-Shan, Ray, Mia G. V., Recchia, John C., Lengerich, Dylan, Taulman, Kyle, Romero, Andres C., Steward, Ellie N., Russell, Sloan, Hardwick, Dillon F., Wootten, Katelynn, Nguyen, Valerie A., Quispe, Devon, Ragsdale, Cameron, Young, Isabel, Atchley-Rivers, N. S., Stribling, Jordin L., Gentile, Julia G, Boeyink, Taylor A., Kwiatkowski, Daniel, Dupeyron, Tomi Oshima, Crews, Anastasia, Shuttleworth, Mitchell, Dresdner, Danielle C., Flackett, Lydia, Haratsaris, Nicholas, Linger, Morgan I, Misener, Jay H., Patti, Samuel, Pine, Tawanchai P., Marikar, Nasreen, Matessi, Giorgio, Routledge, Allie C., Alkaabi, Suhail, Bartman, Jessica L., Bisacca, Gabrielle E., Busch, Celeste, Edwards, Bree, Staudenmier, Caitlyn, Starling, Travis, McVey, Caden, Montano, Maximus, Contizano, Charles J., Taylor, Eleanor, McIntyre, James K., Victory, Andrew, McCammon, Glen S., Kimlicko, Aspen, Sheldrake, Tucker, Shelchuk, Grace, Von Reich, Ferin J., Hicks, Andrew J., O'neill, Ian, Rossman, Beth, Taylor, Liam C., MacDonald, William, Becker, Simone E., Han, Soonhee, O'Sullivan, Cian, Wilcove, Isaac, Brennan, David J., Hanley, Luke C., Hull, Owen, Wilson, Timothy R., Kalmus, Madison H., Berv, Owen A., Harris, Logan Swous, Doan, Chris H, Londres, Nathan, Parulekar, Anish, Adam, Megan M., Angwin, Abigail, Cabbage, Carter C., Colleran, Zachary, Pietras, Alex, Seux, Octave, Oros, Ryan, Wilkinson, Blake C., Nguyen, Khoa D, Trank-Greene, Maedee, Barone, Kevin M., Snyder, G. L., Biehle, Samuel J, Billig, Brennen, Almquist, Justin Thomas, Dixon, Alyssa M., Erickson, Benjamin, Evans, Nathan, Genne, SL, Kelly, Christopher M, Marcus, Serafima M., Ogle, Caleb, Patel, Akhil, Vendetti, Evan, Courtney, Olivia, Deel, Sean, Del Foco, Leonardo, Gjini, Michael, Haines, Jessica, Hoff, Isabelle J., Jones, M. R., Killian, Dominic, Kuehl, Kirsten, Kuester, Chrisanne, Lantz, Maxwell B., Lee, Christian J, Mauer, Graham, McKemey, Finbar K., Millican, Sarah J., Rosasco, Ryan, Stewart, T. C., VanEtten, Eleanor, Derwin, Zachary, Serio, Lauren, Sickler, Molly G., Blake, Cassidy A., Patel, Neil S., Fox, Margaret, Gray, Michael J, Ziegler, Lucas J., Kumar, Aman Priyadarshi, Polly, Madelyn, Mesgina, Sarah, McMorris, Zane, Griffin, Kyle J., Haile, L. N., Bassel, Claire, Dixon, Thomas J., Beattie, Ryan, Houck, Timothy J, Rodgers, Maeve, Trofino, Tyson R., Lukianow, Dax, Smart, Korben, Hall, Jacqueline L., Bone, Lauren, Baldwin, James O., Doane, Connor, Almohsen, Yousef A., Stamos, Emily, Acha, Iker, Kim, Jake, Samour II, Antonio E., Chavali, S., Kanokthippayakun, Jeerakit, Gotlib, Nicholas, Murphy, Ryan C., Archibald, Jack. W., Brimhall, Alexander J, Boyer, Aidan, Chapman, Logan T., Chadda, Shivank, Sibrell, Lisa, Vallery, Mia M., Conroy, Thomas C., Pan, Luke J., Balajonda, Brian, Fuhrman, Bethany E. S., Alkubaisi, Mohamed, Engelstad, Jacob, Dodrill, Joshua, Fuchs, Calvin R., Bullard-Connor, Gigi, Alhuseini, Isehaq, Zygmunt, James C., Sipowicz, Leo, Hayrynen, Griffin A., McGill, Riley M., Keating, Caden J., Hart, Omer, Cyr, Aidan St., Steinsberger, Christopher H., Thoman, Gerig, Wood, Travis M., Ingram, Julia A., Dominguez, J., Georgiades, Nathaniel James, Johnson, Matthew, Johnson, Sawyer, Pedersen, Alexander J., Ralapanawe, Anoush K, Thomas, Jeffrey J., Sato, Ginn A., Reynolds, Hope, Nasser, Liebe, Mizzi, Alexander Z., Damgaard, Olivia, Baflah, Abdulrahman A., Liu, Steven Y., Salindeho, Adam D., Norden, Kelso, Gearhart, Emily E., Krajnak, Zack, Szeremeta, Philip, Amos, Meggan, Shin, Kyungeun, Muckenthaler, Brandon A., Medialdea, Melissa, Beach, Simone, Wilson, Connor B., Adams, Elena R, Aldhamen, Ahmed, Harris, Coyle M., Hesse, Troy M., Golding, Nathan T., Larter, Zachary, Hernandez, Angel, Morales, Genaro, Traxler, Robert B., Alosaimi, Meshal, Fitton, Aidan F., Aaron, James Holland, Lee, Nathaniel F., Liao, Ryan Z., Chen, Judy, French, Katherine V., Loring, Justin, Colter, Aurora, McConvey, Rowan, Colozzi, Michael, Vann, John D., Scheck, Benjamin T., Weigand, Anthony A, Alhabeeb, Abdulelah, Idoine, Yolande, Woodard, Aiden L., Medellin, Mateo M., Ratajczyk, Nicholas O, Tobin, Darien P., Collins, Jack C., Horning, Thomas M., Pellatz, Nick, Pitten, John, Lordi, Noah, Patterson, Alyx, Hoang, Thi D, Zimmermann, Ingrid H, Wang, Hongda, Steckhahn, Daniel, Aradhya, Arvind J., Oliver, Kristin A., Cai, Yijian, Wang, Chaoran, Yegovtsev, Nikolay, Wu, Mengyu, Ganesan, Koushik, Osborne, Andrew, Wickenden, Evan, Meyer, Josephine C., Chaparro, David, Visal, Aseem, Liu, Haixin, Menon, Thanmay S., Jin, Yan, Wilson, John, Erikson, James W., Luo, Zheng, Shitara, Nanako, Nelson, Emma E, Geerdts, T. R., Ortiz, Jorge L Ramirez, and Lewandowski, H. J.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

Flare frequency distributions represent a key approach to addressing one of the largest problems in solar and stellar physics: determining the mechanism that counter-intuitively heats coronae to temperatures that are orders of magnitude hotter than the corresponding photospheres. It is widely accepted that the magnetic field is responsible for the heating, but there are two competing mechanisms that could explain it: nanoflares or Alfv\'en waves. To date, neither can be directly observed. Nanoflares are, by definition, extremely small, but their aggregate energy release could represent a substantial heating mechanism, presuming they are sufficiently abundant. One way to test this presumption is via the flare frequency distribution, which describes how often flares of various energies occur. If the slope of the power law fitting the flare frequency distribution is above a critical threshold, $\alpha=2$ as established in prior literature, then there should be a sufficient abundance of nanoflares to explain coronal heating. We performed $>$600 case studies of solar flares, made possible by an unprecedented number of data analysts via three semesters of an undergraduate physics laboratory course. This allowed us to include two crucial, but nontrivial, analysis methods: pre-flare baseline subtraction and computation of the flare energy, which requires determining flare start and stop times. We aggregated the results of these analyses into a statistical study to determine that $\alpha = 1.63 \pm 0.03$. This is below the critical threshold, suggesting that Alfv\'en waves are an important driver of coronal heating., Comment: 1,002 authors, 14 pages, 4 figures, 3 tables, published by The Astrophysical Journal on 2023-05-09, volume 948, page 71

Published
2023
Full Text
View/download PDF

3. A Case Study of the Impact of Climate Change on Agricultural Loan Credit Risk

Author

Jagdeep Kaur Brar, Antoine Kornprobst, Willard John Braun, Matthew Davison, and Warren Hare

Subjects
credit risk, climate change scenario, conditional value at risk, optimal lending portfolio, Mathematics, QA1-939
Abstract

Changing weather patterns may impose increased risk to the creditworthiness of financial institutions in the agriculture sector. To reduce the credit risk caused by climate change, financial institutions need to update their agricultural lending portfolios to consider climate change scenarios. In this paper we introduce a framework to compute the optimal agricultural lending portfolio under different increased temperature scenarios. In this way we quantify the impact of increased temperature, taken as a measure of climate change, on credit risk. We provide a detailed case study of how our approach applies to the problem of optimizing a portfolio of agricultural loans made to corn farmers across different corn producing regions of Ontario, Canada, under various climate change scenarios. We conclude that the lending portfolio obtained by taking into account the climate change is less risky than the lending portfolio neglecting climate change.

Published
2021
Full Text
View/download PDF

4. Coronal Heating as Determined by the Solar Flare Frequency Distribution Obtained by Aggregating Case Studies

Author

Mason, James Paul, primary, Werth, Alexandra, additional, West, Colin G., additional, Youngblood, Allison, additional, Woodraska, Donald L., additional, Peck, Courtney L., additional, Aradhya, Arvind J., additional, Cai, Yijian, additional, Chaparro, David, additional, Erikson, James W., additional, Ganesan, Koushik, additional, Geerdts, T. R., additional, Hoang, Thi D, additional, Horning, Thomas M., additional, Jin, Yan, additional, Liu, Haixin, additional, Lordi, Noah, additional, Luo, Zheng, additional, Menon, Thanmay S., additional, Meyer, Josephine C., additional, Nelson, Emma E, additional, Oliver, Kristin A., additional, Ramirez Ortiz, Jorge L, additional, Osborne, Andrew, additional, Patterson, Alyx, additional, Pellatz, Nick, additional, Pitten, John, additional, Shitara, Nanako, additional, Steckhahn, Daniel, additional, Visal, Aseem, additional, Wang, Hongda, additional, Wang, Chaoran, additional, Wickenden, Evan, additional, Wilson, John, additional, Wu, Mengyu, additional, Yegovtsev, Nikolay, additional, Zimmermann, Ingrid H, additional, Aaron, James Holland, additional, Abdullah, Jumana T., additional, Abrams, Jonathan M., additional, Abrashoff, Riley, additional, Acevedo, Andres B., additional, Acha, Iker, additional, Meza Acosta, Daniela M., additional, Adam, Megan M., additional, Adams, Dante Q., additional, Adams, Kalvyn N, additional, Adams, Elena R, additional, Akbar, Zainab A., additional, Akruwala, Ushmi H., additional, Al-Ghazwi, Adel, additional, Alabbas, Batool H., additional, Alawadhi, Areej A., additional, Alharbi, Yazeed A., additional, Alahmed, Mohammed S., additional, Albakr, Mohammed A., additional, Albalushi, Yusef J., additional, Albaum, Jonathan, additional, Aldhamen, Ahmed, additional, Ales, Nolan, additional, Alesmail, Mohammad, additional, Alhabeeb, Abdulelah, additional, Alhamli, Dania, additional, Alhuseini, Isehaq, additional, Alkaabi, Suhail, additional, Alkhezzi, Tameem, additional, Alkubaisi, Mohamed, additional, Allanqawi, Nasser, additional, Allsbrook, Martin, additional, Almohsen, Yousef A., additional, Almquist, Justin Thomas, additional, Alnaji, Teeb, additional, Alnasrallah, Yousef A, additional, Alonzi, Nicholas, additional, Alosaimi, Meshal, additional, Alqabani, Emeen, additional, Alrubaie, Mohammad, additional, Alsinan, Reema A., additional, Altenbern, Ava L., additional, Altokhais, Abdullah, additional, Alyami, Saleh A., additional, Ameijenda, Federico, additional, Amer, Hamzi, additional, Amos, Meggan, additional, Anderson, Hunter J., additional, Andrew, Carter, additional, Andringa, Jesse C, additional, Angwin, Abigail, additional, Van Anne, Gabreece, additional, Aramians, Andrew, additional, Arango, Camila Villamil, additional, Archibald, Jack. W., additional, Arias-Robles, Brian A., additional, Aryan, Maryam, additional, Ash, Kevin, additional, Astalos, Justin, additional, Atchley-Rivers, N. S., additional, Augenstein, Dakota N., additional, Austin, Bryce W., additional, Avula, Abhinav, additional, Aycock, Matthew C., additional, Baflah, Abdulrahman A., additional, Balaji, Sahana, additional, Balajonda, Brian, additional, Balcer, Leo M, additional, Baldwin, James O., additional, Banda, David J, additional, Bard, Titus, additional, Barmore, Abby, additional, Barnes, Grant M., additional, Barnhart, Logan D. W., additional, Barone, Kevin M., additional, Bartman, Jessica L., additional, Bassel, Claire, additional, Bastias, Catalina S, additional, Bat-Ulzii, Batchimeg, additional, Batra, Jasleen, additional, Battist, Lexi, additional, Bay, Joshua, additional, Beach, Simone, additional, Beard, Sara, additional, Beato, Quinn I, additional, Beattie, Ryan, additional, Beatty, Thomas, additional, De La Beaujardiere, Tristan, additional, Beauprez, Jacob N., additional, Beck, M. G., additional, Beck, Lily, additional, Becker, Simone E., additional, Behr, Braden, additional, Behrer, Timothy A., additional, Beijer, Joshua, additional, Belei, Brennan J., additional, Belknap, Annelene L., additional, Bell, Aislyn, additional, Bence, Caden, additional, Benke, Evan, additional, Berhanu, Naomi, additional, Berriman-Rozen, Zachary D., additional, Bertuccio, Chrisanna, additional, Berv, Owen A., additional, Biediger, Blaine B., additional, Biehle, Samuel J, additional, Billig, Brennen, additional, Billingsley, Jacob, additional, Billman, Jayce A., additional, Biron, Connor J., additional, Bisacca, Gabrielle E., additional, Blake, Cassidy A., additional, Blandon, Guillermo, additional, Blevins, Olivia, additional, Blouin, Ethan, additional, Bodzianowski, Michal, additional, Boeyink, Taylor A., additional, Bondar, Matthew, additional, Bone, Lauren, additional, De Los Monteros Bonilla, Alberto Espinosa, additional, Borelli, William T, additional, Borgerding, Luke R., additional, Bowen, Troy, additional, Boyer, Christine, additional, Boyer, Aidan, additional, Boyle, Aidan P., additional, Boyne, Tom, additional, Branch, Donovan, additional, Brecl, Ariana E., additional, Brennan, David J., additional, Brimhall, Alexander J, additional, Brockman, Jennifer L., additional, Brookins, Sarah, additional, Brown, Gabriel T., additional, Brown, Cameron L., additional, Brown, Ryan, additional, Brownlow, Jordi, additional, Brumage-Heller, Grant, additional, Brumley, Preston J., additional, Bryan, Samuel, additional, Brzostowicz, A., additional, Buhamad, Maryam, additional, Bullard-Connor, Gigi, additional, Bunsow, J. R. Ramirez, additional, Burns, Annemarie C., additional, Burritt, John J., additional, Burton, Nicholas David, additional, Burton, Taylor, additional, Busch, Celeste, additional, Butler, Dylan R., additional, Buxton, B. W., additional, C. Toups, Malena, additional, Cabbage, Carter C., additional, Cage, Breonna, additional, Cahn, Jackson R., additional, Campbell, Andrew J, additional, Canales, Braden P., additional, Cancio, Alejandro R., additional, Carey, Luke, additional, Carillion, Emma L., additional, Carpender, Michael Andrew, additional, Carpenter, Emily, additional, Chadda, Shivank, additional, Chambers, Paige, additional, Chanders, Jasey, additional, Chandler, Olivia M., additional, Chang, Ethan C., additional, Chapman, Mitchell G., additional, Chapman, Logan T., additional, Chavali, S., additional, Chavez, Luis, additional, Chen, Kevin, additional, Chen, Lily, additional, Chen, Sam, additional, Chen, Judy, additional, Chhetri, Jenisha, additional, Chiles, Bradyn, additional, Chizmar, Kayla M., additional, Christiansen, Katherine E, additional, Cisne, Nicholas A., additional, Cisneros, Alexis, additional, Clark, David B., additional, Clarke, Evelyn, additional, Clarkson, Peter C, additional, Clausi, Alexis R., additional, Cochran, Brooke, additional, Coe, Ryan W., additional, Coleman-Plante, Aislinn, additional, Colleran, Jake R., additional, Colleran, Zachary, additional, Collier, Curran, additional, Collins, Nathaniel A., additional, Collins, Sarah, additional, Collins, Jack C., additional, Colozzi, Michael, additional, Colter, Aurora, additional, Cone, Rebecca A., additional, Conroy, Thomas C., additional, Conti, Reese, additional, Contizano, Charles J., additional, Cool, Destiny J., additional, Cooper, Nicholas M., additional, Corbitt, Jessica S, additional, Courtney, Jonas, additional, Courtney, Olivia, additional, Cox, Corben L., additional, Craig, Wilmsen B., additional, Creany, Joshua B., additional, Crews, Anastasia, additional, Crocker, K. A., additional, Croteau, A. J., additional, Crow, Christian J., additional, Cruse, Zoe, additional, Cruz, Avril, additional, Curnow, Tyler L., additional, Current, Hayden, additional, Curry, Riley T., additional, Cutler, Libby, additional, Cyr, Aidan St., additional, Dabberdt, Frederick M., additional, Daboub, Johnston, additional, Damgaard, Olivia, additional, Das, Swagatam, additional, Davis, Emma A. B., additional, Debarros, Elyse, additional, Deel, Sean, additional, Delasantos, Megan E., additional, Deng, Tianyue, additional, Derwin, Zachary, additional, Desai, Om, additional, Dewey, Kai, additional, Dias, John S., additional, Dice, Kenzie A., additional, Dick, R., additional, Dicken, Cyrus A., additional, Dietrick, Henry, additional, Dinser, Alexis M., additional, Dixon, Alyssa M., additional, Dixon, Thomas J., additional, Do, Helen C., additional, Doan, Chris H, additional, Doane, Connor, additional, Dodrill, Joshua, additional, Doermer, Timothy, additional, Dominguez, Lizbeth Montoya, additional, Dominguez, J., additional, Domke, Emerson N., additional, Doran, Caroline R., additional, Dorr, Jackson A., additional, Dorricott, Philip, additional, Dresdner, Danielle C., additional, Driscoll, Michael, additional, Driscoll, Kailer H., additional, Duncan, Sheridan J., additional, Dunlap, Christian, additional, Dunn, Gabrielle M., additional, Duong, Tien Q., additional, Dupeyron, Tomi Oshima, additional, Dvorak, Peter, additional, East, Andrew, additional, East, Andrew N., additional, Edwards, Bree, additional, Ehrlich, Lauren, additional, Elbashir, Sara I., additional, Engelhardt, Rasce, additional, Engelstad, Jacob, additional, England, Colin, additional, Enrich, Andrew, additional, Erickson, Abbey, additional, Erickson, Benjamin, additional, Evans, Nathan, additional, Ewing, Calvin A, additional, Eyeson, Elizabeth A., additional, Faber, Ian, additional, Fails, Avery M., additional, Fauntleroy, John T, additional, Fell, Kevin, additional, Feng, Zitian, additional, Fenwick, Logan D., additional, Feoktistov, Nikita, additional, Fife, Ryann, additional, D. Figueirinhas, John Alfred, additional, Fisch, Jean-Paul, additional, Fischer, Emmalee, additional, Fischer-White, Jules, additional, Fitton, Aidan F., additional, Fix, Alexander, additional, Flackett, Lydia, additional, Flores, Fernando, additional, Floyd, Aidan, additional, Del Foco, Leonardo, additional, Folarin, Adeduni, additional, Forbes, Aidan E., additional, Fortino, Elise, additional, Fougere, Benjamin L., additional, Fowler, Alexandra A., additional, Fox, Margaret, additional, French, James M., additional, French, Katherine V., additional, Frick, Florian G., additional, Fuchs, Calvin R., additional, Fuhrman, Bethany E. S., additional, Furney, Sebastian, additional, Gabir, Moutamen, additional, Galarraga, Gabriela, additional, Gale, Skylar, additional, Gapin, Keala C., additional, Garscadden, A. J., additional, Gasser, Rachel, additional, Gayou, Lily, additional, Gearhart, Emily E., additional, Geisman, Jane, additional, Geneser, Julianne R., additional, Genne, Sl, additional, Gentile, Julia G, additional, Gentry, Eleanor, additional, George, Jacob D., additional, Georgiades, Nathaniel James, additional, Gerhardstein, Phillip, additional, Gersabeck, Clint, additional, Ghaith, Bandar Abu, additional, Ghiassi, Dorsa, additional, Giebner, B. C., additional, Gilmartin, Dalton, additional, Gilpatrick, Connor B., additional, Gjini, Michael, additional, Golden, Olivia, additional, Golding, Nathan T., additional, Goldsberry, C. A., additional, Gomez, Angel R., additional, Gomez, Angel A., additional, Gopalakrishnan, Sean, additional, Gopalani, Mariam, additional, Gotlib, Nicholas, additional, Graham, Alaina S., additional, Gray, Michael J, additional, Gregory, Alannah H., additional, Gregory, Joshua A., additional, Grell, Kristyn, additional, Griego, Justus, additional, Griffin, Nicholas F., additional, Griffin, Kyle J., additional, Guerrero, Matt, additional, Gunderson, Nicole, additional, Guo, Mutian, additional, Gustavsson, E. R., additional, Hach, Grace K., additional, Haile, L. N., additional, Haines, Jessica, additional, Mc Hale, Jack J., additional, Hales, Ryder Buchanan, additional, Haley, Mark S., additional, Hall, Jacqueline L., additional, Hamilton, Sean R., additional, Han, Soonhee, additional, Hand, Tyler, additional, Hanley, Luke C., additional, Hansen, Connor M, additional, Hansen, Joshua A., additional, Hansson, Jonathan, additional, Hao, Tony Yunfei, additional, Haratsaris, Nicholas, additional, Hardie, Isabelle, additional, Hardwick, Dillon F., additional, Hares, Cameron T., additional, Harris, Logan Swous, additional, Harris, Coyle M., additional, Hart, Omer, additional, Hashiro, Kyle, additional, Hattendorf, Elsie, additional, Haubrich, Calder, additional, Hawat, Elijah, additional, Hayrynen, Griffin A., additional, Heintz, Danielle A., additional, Hellweg, Tim, additional, Hernandez, Angel, additional, Herrera, Emanuel, additional, Herrington, Robert N., additional, Herwig, Tim, additional, Hesse, Troy M., additional, Hiatt, Quinn, additional, Hibbard, Lea Pearl, additional, Hicks, Imari R., additional, Hicks, Andrew J., additional, Highhouse, Nigel, additional, Hildebrand, Annalise K., additional, Hill, Paula, additional, Hill, Hallie, additional, Hintsa, Evan, additional, Hirschmann, Anna E., additional, Hitt, Travis, additional, Ho, Ella, additional, Hoff, Isabelle J., additional, Hoffman, Alex, additional, Hogen, Blake A., additional, Horne, Linda, additional, Houck, Timothy J, additional, Howell, Noah H., additional, Hrudka, E. M., additional, Hu, J., additional, Huang, Jianyang, additional, Huang, Chenqi, additional, Huang, Shancheng, additional, Hudson, Zachary A., additional, Hudson, Nathan C., additional, Huebsch, Tyler J., additional, Hull, Owen, additional, Hunter, Samuel C, additional, Husted, Troy, additional, Hutabarat, Abigail P., additional, Huynh, Leslie, additional, Samour Ii, Antonio E., additional, Idoine, Yolande, additional, Ingram, Julia A., additional, Iovan, Taro, additional, Isert, Samuel A., additional, Salcido-Alcontar, Antonio, additional, Jacobsen, Thomas, additional, Jaimes, Alan A, additional, Jameson, Connor, additional, Jarriel, J. R., additional, Jarvis, Sam, additional, Jenkins, Josh, additional, Jensen, Alexander V., additional, Jeong, Jacob, additional, Jeseritz, Luke A., additional, Jesse, Trevor, additional, Ji, Soo Yeun, additional, Jiang, Yufan, additional, Johnson, Owen, additional, Johnson, Matthew, additional, Johnson, Sawyer, additional, Johnston, Julia, additional, Johnston, Braedon Y., additional, Jones, Olivia M., additional, Jones, M. R., additional, Jourabchi, Tara, additional, House, Tony A., additional, Juels, Parker, additional, T. Kainz, Sabrina J. H., additional, Kaiser, Emily, additional, Kallemeyn, Nicolas Ian, additional, Kalmus, Madison H., additional, Kalra, Etash, additional, Kamenetskiy, Margaret, additional, Kanokthippayakun, Jeerakit, additional, Kapla, Shaun D., additional, Karsh, Brennan J., additional, Keating, Caden J., additional, Kelley, Morgan A., additional, Kelley, Michael P., additional, Kelly, Nicholas, additional, Kelly, James, additional, Kelly, Teagan, additional, Kelly, Christopher M, additional, Kennedy, Kellen, additional, Kennedy, Cayla J., additional, Kennedy, Forrest, additional, Kennedy, Abigail, additional, Kerr-Layton, Liana, additional, Ketterer, Marilyn, additional, Khan, Ibraheem A., additional, Khan, Usman, additional, Khanal, Sapriya, additional, Kiechlin, Jack L., additional, Killian, Dominic, additional, Kim, Kevin, additional, Kim, Brian T., additional, Kim, Matthew M., additional, Kim, Jake, additional, Kimlicko, Aspen, additional, Kipp, Isabel M, additional, Kirkpatrick, Hunter B., additional, Kissner, Natalie, additional, Kite, Emily R., additional, Kleinhaus, Olivia R., additional, Knott, Philip Whiting, additional, Koch, Will, additional, Koenig, Greta, additional, Koke, Emily, additional, Kokes, Thomas, additional, Kothamdi, Yash S., additional, Krajnak, Zack, additional, Kresek, Zoe M., additional, Kriegman, Dylan, additional, Kritzberg, Jake E., additional, Krueger, Davis J., additional, Kubiak, Bartlomiej, additional, Kuehl, Kirsten, additional, Kuester, Chrisanne, additional, Kuiper, Nicolas A., additional, Kumar, Aman Priyadarshi, additional, Kuybus, Connor, additional, Kwiatkowski, Daniel, additional, Lafemina, Quintin Y., additional, Lacjak, Kevin, additional, Lahmers, Kyle, additional, Lam, Antonia, additional, Landrey, Kalin, additional, Lantz, Maxwell B., additional, Larter, Zachary, additional, Lau, Benjamin P., additional, Lauzon, Megan, additional, Lawlor, Rian, additional, Learned, Tyler, additional, Lee, E. C., additional, Lee, Junwon, additional, Lee, Adrianna J., additional, Lee, Justin, additional, Lee, Alexis Ying-Shan, additional, Lee, Christian J, additional, Lee, Nathaniel F., additional, Leiker, Linzhi, additional, Lengerich, Dylan, additional, Leoni, Cecilia, additional, Lezak, Adrienne R., additional, Li, David Y., additional, Li, Isaac, additional, Liao, Ryan Z., additional, Linders, Bridget, additional, Linger, Morgan I, additional, Linnane, Katherine B., additional, Lippincott, Sam, additional, Lister, Barrett, additional, Litton, Shelby D, additional, Liu, Nianzi, additional, Liu, Steven Y., additional, Logan, Timothy W., additional, Londres, Nathan, additional, Lonergan, Mia C., additional, Lookhoff, Emily, additional, Loomis, N. E., additional, Lopez, Christian, additional, Loring, Justin, additional, Lucca, Jeffrey, additional, Lukianow, Dax, additional, M. Cheang, Nathan, additional, Macdonald, William, additional, Madonna, Claire A., additional, Madsen, Kasey O., additional, Maksimuk, Tiffany E., additional, Mallory, Macguire, additional, Malone, Ryan A., additional, Maly, Blake, additional, Manzanares, Xander R., additional, Maravi, Aimee S., additional, Marcus, Serafima M., additional, Marikar, Nasreen, additional, Marquez, Josie A., additional, Marquez, Mathew J., additional, Marsh, Lauren, additional, Marsh, Toni, additional, Martin, Logan S., additional, Martinez, Alexa M., additional, Martinez, Jose R., additional, Martinez, Hazelia K., additional, Martyr, Cara, additional, Masri, Mirna, additional, Matessi, Giorgio, additional, Khan Mohd Reduan Mathavan, Adam Izz, additional, Mathieson, Randi M., additional, Mathur, Kabir P., additional, Mauer, Graham, additional, Mayer, Victoria A., additional, Mazzotta, Liam, additional, Mccammon, Glen S., additional, Mcconvey, Rowan, additional, Mccormick, Tyler, additional, Mccoy, Andrew, additional, Mcentee, Kelleen, additional, Mcgarvey, Meaghan V., additional, Mcgill, Riley M., additional, Mcintyre, James K., additional, Mckemey, Finbar K., additional, Mcmorris, Zane, additional, Mcmullan, Jesse J., additional, Mcquaid, Ella, additional, Mcvey, Caden, additional, Mccurry, Kyle, additional, Medellin, Mateo M., additional, Medialdea, Melissa, additional, Mehidic, Amar, additional, Meillon, Stella, additional, Meiselman-Ashen, Jonah B., additional, Mellett, Sarah, additional, Menassa, Dominic, additional, Mendez, Citlali, additional, Mendoza-Anselmi, Patricia, additional, Menke, Riley, additional, Mesgina, Sarah, additional, Mewhirter, William J., additional, Meyer, Ethan, additional, Miften, Aya M., additional, Miles, Ethan J., additional, Miller, Andrew, additional, Miller, Joshua B., additional, Millican, Emily B., additional, Millican, Sarah J., additional, Mills, Dylan P., additional, Minimo, Josh, additional, Misener, Jay H., additional, Mitchell, Alexander J., additional, Mizzi, Alexander Z., additional, Molina-Saenz, Luis, additional, Moll, Tyler S, additional, Moll, Hayden, additional, Montano, Maximus, additional, Montoya, Michael, additional, Monyek, Eli, additional, Mora, Jacqueline Rodriguez, additional, Morales, Gavin, additional, Morales, Genaro, additional, Morelock, Annalise M., additional, Morency, Cora, additional, Moreno, Angel J., additional, Morgan, Remy, additional, Moss, Alexander P., additional, Muckenthaler, Brandon A., additional, Mueller, Alexander, additional, Mulcahy, Owen T., additional, Mundy, Aria T., additional, Muniz, Alexis A., additional, Murphy, Maxwell J., additional, Murphy, Madalyn C., additional, Murphy, Ryan C., additional, Murrel, Tyler, additional, Musgrave, Andrew J., additional, Myer, Michael S., additional, Nandu, Kshmya, additional, Napoletano, Elena R., additional, Naqi, Abdulaziz, additional, Narayan, Anoothi, additional, Nasser, Liebe, additional, Neeland, Brenna K, additional, Nehring, Molly, additional, Nelson, Maya Li, additional, Nguyen, Lena P., additional, Nguyen, Lena, additional, Nguyen, Leonardo, additional, Nguyen, Valerie A., additional, Nguyen, Khoa D, additional, Norden, Kelso, additional, Norris, Cooper, additional, Nunes-Valdes, Dario, additional, Nussbaum, Rosemary O., additional, O’Sullivan, Cian, additional, O’Neill, Ian, additional, Oakes, S. H., additional, Odbayar, Anand, additional, Ogle, Caleb, additional, Oishi-Holder, Sean, additional, Olguin, Nicholas, additional, Olson, Nathaniel P., additional, Ong, Jason, additional, Opp, Elena N., additional, Orbidan, Dan, additional, Oros, Ryan, additional, Ort, Althea E., additional, Osborn, Matthew, additional, Osogwin, Austin, additional, Otto, Grant, additional, Oudakker, Jessica, additional, Overchuk, Igor, additional, Padgette, Hannah M., additional, Padilla, Jacqueline, additional, Palizzi, Mallory, additional, Palmgren, Madeleine L., additional, Palos, Adler, additional, Pan, Luke J., additional, Parker, Nathan L., additional, Parker, Sasha R., additional, Parkinson, Evan J., additional, Parulekar, Anish, additional, Pastor, Paige J., additional, Patel, Kajal, additional, Patel, Akhil, additional, Patel, Neil S., additional, Patti, Samuel, additional, Patton, Catherine, additional, Payne, Genevieve K., additional, Payne, Matthew P., additional, Pearl, Harrison M., additional, Beck Von Peccoz, Charles B., additional, Pedersen, Alexander J., additional, Pelster, Lily M., additional, Peou, Munisettha E., additional, Perez, J. S., additional, Perez, Freddy, additional, Pesce, Anneliese, additional, Petersen, Audrey J., additional, Peterson, B., additional, Petric, Romeo S. L., additional, Pettine, Joshua, additional, Phalen, Ethan J., additional, Pham, Alexander V., additional, Phan, Denise M., additional, Pherigo, Callie C, additional, Phillips, Lance, additional, Phillips, Justin, additional, Phommatha, Krista, additional, Pietras, Alex, additional, Pine, Tawanchai P., additional, Pitsuean-Meier, Sedique, additional, Pixley, Andrew M., additional, Plantz, Will, additional, Plummer, William C., additional, Plutt, Kaitlyn E., additional, Plzak, Audrey E., additional, Pohle, Kyle, additional, Polikoff, Hyden, additional, Pollard, Matthew, additional, Polly, Madelyn, additional, Porter, Trevor J., additional, Price, David, additional, Price, Nicholas K., additional, Prinster, Gale H., additional, Propper, Henry Austin, additional, Quarderer, Josh, additional, Quinn, Megan S., additional, Quinonez, Oliver, additional, Quispe, Devon, additional, Ragsdale, Cameron, additional, Rahn, Anna L., additional, Rakhmonova, M., additional, Ralapanawe, Anoush K, additional, Ramachandra, Nidhi, additional, Ramirez, Nathaniel, additional, Ramirez, Ariana C., additional, Ramirez, Sacha, additional, Randolph, Parker, additional, Ranjan, Anurag, additional, Rankin, Frederick C, additional, Rapaport, Sarah Grace, additional, Ratajczyk, Nicholas O, additional, Ray, Mia G. V., additional, Reagan, Brian D., additional, Recchia, John C., additional, Reddy, Brooklyn J., additional, Reed, Joseph, additional, Reed, Charlie, additional, Reeves, Justin, additional, Reh, Eileen N., additional, Von Reich, Ferin J., additional, Reyna, Andrea B., additional, Reynolds, Alexander, additional, Reynolds, Hope, additional, Rippel, Matthew, additional, Rivas, Guillermo A., additional, Rives, Anna Linnea, additional, Robert, Amanda M., additional, Robertson, Samuel M., additional, Rodgers, Maeve, additional, Rojec, Stewart, additional, Romero, Andres C., additional, Rosasco, Ryan, additional, Rossman, Beth, additional, Rotter, Michael, additional, Rounsefell, Tyndall, additional, Rouse, Charlotte, additional, Routledge, Allie C., additional, Roy, Marc G., additional, Roy, Zoe A., additional, Ruger, Ryan, additional, Ruggles-Delgado, Kendall, additional, Rule, Ian C., additional, Rumley, Madigan, additional, Runyon, Brenton M., additional, Ruprecht, Collin, additional, Russell, Bowman, additional, Russell, Sloan, additional, Ryder, Diana, additional, Saeb, David, additional, Salazar, J., additional, Salazar, Violeta, additional, Saldi, Maxwell, additional, Salgado, Jose A., additional, Salindeho, Adam D., additional, Sanchez, Ethan S., additional, Sanchez-Sanchez, Gustavo, additional, Sarfaraz, Darian, additional, Sarkar, Sucheta, additional, Sato, Ginn A., additional, Savage, Carl, additional, Schaller, Marcus T., additional, Scheck, Benjamin T., additional, Schlenker, Jared A. W., additional, Schofer, Matthew J, additional, Schubert, Stephanie H., additional, Schultze, Courtney, additional, Schumacher, Grace K, additional, Seglem, Kasper, additional, Serio, Lauren, additional, Seux, Octave, additional, Shahba, Hannan, additional, Shannahan, Callie D., additional, Sharma, Shajesh, additional, Shaver, Nathan, additional, Shaw, Timothy, additional, Shelby, Arlee K., additional, Shelby, Emma, additional, Shelchuk, Grace, additional, Sheldrake, Tucker, additional, Sherry, Daniel P., additional, Shi, Kyle Z., additional, Shields, Amanda M., additional, Shin, Kyungeun, additional, Shockley, Michael C., additional, Shoha, Dominick, additional, Shortman, Jadon, additional, Shuttleworth, Mitchell, additional, Sibrell, Lisa, additional, Sickler, Molly G., additional, Siles, Nathan, additional, Silvester, H. K., additional, Simmons, Conor, additional, Simone, Dylan M., additional, Simone, Anna, additional, Singh, Savi, additional, Singh, Maya A., additional, Sinkovic, Madeline, additional, Sipowicz, Leo, additional, Sjoroos, Chris, additional, Slocum, Ryan, additional, Slyne, Colin, additional, Smart, Korben, additional, Smith, Alexandra N., additional, Smith, Kelly, additional, Smith, Corey, additional, Smith, Elena K., additional, Smith, Samantha M., additional, Smith, Percy, additional, Smith, Trevor J, additional, Snyder, G. L., additional, Soby, Daniel A., additional, Sohail, Arman S., additional, Solorio, William J., additional, Solt, Lincoln, additional, Soon, Caitlin, additional, Spangler, Ava A, additional, Spicer, Benjamin C., additional, Srivastava, Ashish, additional, Stamos, Emily, additional, Starbuck, Peter, additional, Stark, Ethan K., additional, Starling, Travis, additional, Staudenmier, Caitlyn, additional, Steinbarth, Sheen L., additional, Steinsberger, Christopher H., additional, Stepaniak, Tyler, additional, Steward, Ellie N., additional, Stewart, Trey, additional, Stewart, T. C., additional, Stratmeyer, Cooper N., additional, Stratton, Grant L., additional, Stribling, Jordin L., additional, Sulaiman, S. A, additional, Sullivan, Brandon J, additional, Sundell, M. E., additional, Sur, Sohan N., additional, Suri, Rohan, additional, Swartz, Jason R., additional, Sweeney, Joshua D., additional, Syed, Konner, additional, Szabo, Emi, additional, Szeremeta, Philip, additional, Ta, Michael-Tan D., additional, Tanguma, Nolan C., additional, Taulman, Kyle, additional, Taylor, Nicole, additional, Taylor, Eleanor, additional, Taylor, Liam C., additional, Tayman, K. E., additional, Tellez, Yesica, additional, Terrile, Richard, additional, Tesdahl, Corey D, additional, Thielmann, Quinn N., additional, Thoman, Gerig, additional, Thomas, Daniel, additional, Thomas, Jeffrey J., additional, Thompson, William N., additional, Thornally, Noah R., additional, Tobin, Darien P., additional, Ton, Kelly, additional, Toon, Nathaniel J., additional, Tran, Kevin, additional, Tran, Bryn, additional, Trank-Greene, Maedee, additional, Trautwein, Emily D., additional, Traxler, Robert B., additional, Tressler, Judah, additional, Trofino, Tyson R., additional, Troisi, Thomas, additional, Trunko, Benjamin L., additional, Truong, Joshua K., additional, Tucker, Julia, additional, Umbricht, Thomas D, additional, Uphoff, C. H., additional, Upthegrove, Zachary T., additional, Vadayar, Shreenija, additional, Valencia, Whitney, additional, Vallery, Mia M., additional, Vanetten, Eleanor, additional, Vann, John D., additional, Varela, Ilian, additional, Vassilyev, Alexandr, additional, Vaver, Nicholas J., additional, Velamala, Anjali A., additional, Vendetti, Evan, additional, Venegas, Nancy Ortiz, additional, Vepa, Aditya V., additional, Vess, Marcus T., additional, Veta, Jenna S., additional, Victory, Andrew, additional, Vinson, Jessica, additional, Vogel, Connor Maklain, additional, Wagoner, Michaela, additional, Wallace, Steven P., additional, Wallace, Logan, additional, Waller, Caroline, additional, Wang, Jiawei, additional, Warble, Keenan, additional, Ward-Chene, N. R. D., additional, Watson, James Adam, additional, Weber, Robert J., additional, Wegner, Aidan B., additional, Weigand, Anthony A, additional, Weiner, Amanda M., additional, West, Ayana, additional, Wexler, Ethan Benjamin, additional, Wheeler, Nicola H., additional, White, Jamison R., additional, White, Zachary, additional, White, Oliver S., additional, Whittall, Lloyd C., additional, Wilcove, Isaac, additional, Wilkinson, Blake C., additional, Willard, John S., additional, Williams, Abigail K., additional, Williams, Sajan, additional, Wilson, Orion K., additional, Wilson, Evan M., additional, Wilson, Timothy R., additional, Wilson, Connor B., additional, Witkoff, Briahn, additional, Wolfe, Aubrey M., additional, Wolle, Jackson R., additional, Wood, Travis M., additional, Woodard, Aiden L., additional, Wootten, Katelynn, additional, Xiao, Catherine, additional, Yang, Jianing, additional, Yang, Zhanchao, additional, Young, Trenton J., additional, Young, Isabel, additional, Zenner, Thomas, additional, Zhang, Jiaqi, additional, Zhao, Tianwei, additional, Zhao, Tiannie, additional, Zhao, Noah Y., additional, Zhou, Chongrui, additional, Ziebold, Josh J, additional, Ziegler, Lucas J., additional, Zygmunt, James C., additional, Zhang, Jinhua, additional, and Lewandowski, H. J., additional

Published
2023
Full Text
View/download PDF

5. A Case Study of the Impact of Climate Change on Agricultural Loan Credit Risk

Author

Willard John Braun, Matthew Davison, Warren Hare, Antoine Kornprobst, and Jagdeep Kaur Brar

Subjects
business.industry, Natural resource economics, credit risk, General Mathematics, Climate change, climate change scenario, conditional value at risk, optimal lending portfolio, Expected shortfall, Increased risk, Agriculture, Loan, Climate change scenario, Computer Science (miscellaneous), Economics, QA1-939, Portfolio, business, Engineering (miscellaneous), Mathematics, Credit risk
Abstract

Changing weather patterns may impose increased risk to the creditworthiness of financial institutions in the agriculture sector. To reduce the credit risk caused by climate change, financial institutions need to update their agricultural lending portfolios to consider climate change scenarios. In this paper we introduce a framework to compute the optimal agricultural lending portfolio under different increased temperature scenarios. In this way we quantify the impact of increased temperature, taken as a measure of climate change, on credit risk. We provide a detailed case study of how our approach applies to the problem of optimizing a portfolio of agricultural loans made to corn farmers across different corn producing regions of Ontario, Canada, under various climate change scenarios. We conclude that the lending portfolio obtained by taking into account the climate change is less risky than the lending portfolio neglecting climate change.

Published
2021
Full Text
View/download PDF

9. Echoes from the Field

Author

Emerson, W. Otto, Adams, Ernest, Welch, John M., Belding, Lyman, Slevin, T. E., Willard, John M., and Cohen, D. A.

Published
1899
Full Text
View/download PDF

15. A critical reappraisal of the oximetric assessment of intracardiac left-to-right shunting in adults

Author

Pirwitz, Mark J., Willard, John E., Landau, Charles, Hillis, L.David, and Lange, Richard A.

Subjects
Adults -- Analysis, Health
Abstract

Byline: Mark J. Pirwitz, John E. Willard, Charles Landau, L.David Hillis, Richard A. Lange Abstract: Although the oximetric analysis of blood from the right heart chambers is the most commonly used method for assessing the presence of intracardiac left-to-right shunting, the data the analysis is based on are limited. In addition, uncertainty exists concerning the best way of estimating the mixed venous oxygen content in subjects with intraatrial left-to-right shunting. In 102 adults without left-to-right shunting, blood was obtained from the venae cavae and right heart chambers to measure oxygen content. The limits of normality of oxygen content differences were 0.5 ml/dl from venae cavae to right atrium, 0.6 ml/dl from right atrium to right ventricle, and 0.9 ml/dl from right ventricle to pulmonary artery. The pulmonary arterial oxygen content was best estimated by combining the superior and inferior vena caval oxygen contents according to the formula (2[SVC]+ 3[IVC]) A* 5, where SVC is the superior vena cava and IVC is the inferior venae cava. These data provide new oximetric criteria for establishing the presence of intracardiac left-to-right shunting in adults. (Am Heart J 1997;133:413-7.) Author Affiliation: Dallas, Tex Article Note: (footnote) [star] Reprint requests: Richard A. Lange, MD, Room CS 7.102, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75235-9047., [star][star] 0002-8703/97/$5.00 + 0 4/1/80081

Published
1997

18. Coronary-artery vasoconstriction induced by cocaine, cigarette smoking or both

Author

Moliterno, David J., Willard, John E., Lange, Richard A., Negus, Brian H., Boehrer, James D., Glamann, D. Brent, Landau, Charles, Rossen, James D., Winniford, Michael D., and Hillis, L. David

Subjects
Cocaine -- Physiological aspects, Smoking -- Physiological aspects, Coronary arteries, Oxygen consumption
Abstract

Combined use of cocaine and tobacco may decrease the diameter of coronary arteries and the oxygen supply while simultaneously increasing the heart's need for oxygen. Researchers evaluated the rate-pressure product, a measure of the heart's oxygen demand, in 42 smokers after cocaine use and cigarette smoking. Thirty-six of the smokers had coronary artery disease. The average rate-pressure product increased by about 11% after cocaine use, 12% after one cigarette and 45% after both cocaine use and smoking. Among 30 patients who received cocaine, cocaine caused an average 7% decrease in the diameter of nondiseased coronary arteries. Tobacco use caused about a 7% decrease and combined cocaine and tobacco use caused a 6% decrease in nondiseased artery diameter. The diameters of diseased artery segments decreased by an average of 9% after cocaine use, 5% after tobacco use and 19% after combined use.

Published
1994

19. Current concepts: the use of aspirin in ischemic heart disease

Author

Willard, John E., Lange, Richard A., and Hillis, L. David

Subjects
Aspirin -- Health aspects, Coronary heart disease -- Drug therapy
Abstract

Patients with ischemic heart disease are often treated with aspirin to prevent a heart attack. Aspirin prevents aggregation of platelets, and formation of blood clots after blood vessel injury. Treatment with aspirin reduces the risk of a heart attack or death in patients with chronic stable angina (chest pain) or unstable angina at rest. Treatment with a low dose of aspirin each day may also prevent a heart attack in individuals with no history of ischemic heart disease. Treatment with aspirin may not be as effective for preventing a second heart attack. Aspirin is used to treat patients undergoing coronary angioplasty or coronary-artery bypass grafting to prevent blood clot formation. Other antiplatelet drugs may be used alone or in combination with aspirin to treat patients with ischemic heart disease. The main side effects of aspirin are irritation of the gastrointestinal tract and increased bleeding. These side effects are more likely to occur with doses above the recommended 325 mg per day.

Published
1992

21. Acquired myocardial bridging

Author

Vongpatanasin, Wanpen, Willard, John E., Hillis, L. David, Lange, Richard A., and Landau, Charles

Published
1997

23. Intranasal nicotine spray does not augment the adverse effects of cigarette smoking on myocardial oxygen demand or coronary arterial dimensions

Author

Keeley, Ellen C., Pirwitz, Mark J., Landau, Charles, Lange, Richard A., Hillis, L. David, Foerster, Ebb H., Conrad, Kelly, and Willard, John E.

Subjects
Tobacco habit -- Care and treatment, Nicotine -- Health aspects, Oxygen in the body -- Measurement, Health, Health care industry
Abstract

PURPOSE: Nicotine replacement therapy has become a popular therapy for smokers attempting to stop smoking. Unfortunately, some subjects continue to smoke while receiving it. Since nicotine is believed to be the primary constituent of cigarette smoke responsible for its acute adverse effects on myocardial oxygen supply and demand, concomitant nicotine replacement therapy and smoking theoretically could provoke a marked decrease in myocardial oxygen supply and increase in demand. This study was performed to assess the effects of cigarette smoking with and without concomitant intranasal nicotine spray on: (a) myocardial oxygen demand, (b) coronary arterial dimensions, and (c) the development of acute cardiovascular tolerance. PATIENTS AND METHODS: In 19 smokers referred for cardiac catheterization for the evaluation of chest pain, we assessed the effects of cigarette smoking with and without concomitant intranasal nicotine spray on. (a) heart rate-systolic arterial pressure product lan estimate of myocardial oxygen demand), (b) coronary arterial dimensions (measured with computer-assisted quantitative arteriography), and (c) the development of acute cardiovascular tolerance. RESULTS: Smoking a first cigarette increased rate pressure product (P

Published
1996

25. Coronary angioplasty in the patient with acute myocardial infarction

Author

Landau, Charles, Glamann, D. Brent, Willard, John E., Hillis, L. David, and Lange, Richard A.

Subjects
Heart attack, Transluminal angioplasty -- Evaluation, Health, Health care industry
Abstract

In patients with acute myocardial infarction, percutaneous transluminal coronary angioplasty (PTCA) may be used (1) to restore antegrade flow in the infarct artery (so called 'primary' PTCA) instead of thrombolytic therapy, (2) to establish antegrade coronary flow after unsuccessful thrombolytic therapy (so called 'rescue' or 'salvage' PTCA), and (3) to reduce the residual infarct artery stenosis after successful thrombolysis. This review examines the prospective, randomized studies that have addressed the use of PTCA for each of these purposes. In selected circumstances, PTCA is a reasonable alternative to thrombolytic therapy in patients with evolving or recent Q-wave myocardial infarction. In those patients with acute myocardial infarction complicated by cardiogenic shock, PTCA may be the preferred treatment. After thrombolytic therapy, the use of PTCA in the absence of spontaneous or provocable ischemia offers no benefit with regard to left ventricular function or survival. in this circumstance, its use is associated with an excessive risk of bleeding, transfusions, and emergent coronary artery bypass surgery when performed within hours of infarction.

Published
1994

26. Influence of intranasal cocaine on plasma constituents associated with endogenous thrombosis and thrombolysis

Author

Moliterno, David J., Lange, Richard A., Gerard, Robert D., Willard, John E., Lackner, Carolin, and Hillis, L. David

Subjects
Cocaine abuse -- Health aspects, Thrombosis -- Risk factors, Thrombolytic therapy -- Physiological aspects, Health, Health care industry
Abstract

PURPOSE: As cocaine abuse has become widespread, catastrophic cocaine-associated cardiovascular events have been noted with increasing frequency. Although these incidents are thought to be caused by drug-induced vasoconstriction and/or arterial thrombosis, the influence of cocaine on the plasma constituents involved in endogenous thrombosis and thrombolysis has not been characterized. PATIENTS AND METHODS: In 22 patients (8 men, 14 women, ages 32 to 62 years) undergoing cardiac catheterization, blood samples were procured before and 15 minutes after the administration intranasal saline (n = 8, controls) or cocaine, 2 mg/kg (n = 14), and the plasma concentrations of fibrinogen, plasminogen, and lipoprotein(a), as well as tissue plasminogen activator activity and plasminogen activator inhibitor (PAI-1) activity, were measured. RESULTS: No variable changed with the use of intranasal saline, whereas the use of cocaine resulted in an increase in PAI-I activity (0.48 + 0.06 (mean + SD] nmol\L at baseline, 0.53 + 0.05 nmol/L after cocaine, P = 0.011). CONCLUSION: Intranasal cocaine administration is associated with an increase in plasma PAI-1 activity. This may be important in recreational users of cocaine who experience vascular thrombosis.

Published
1994

27. Coronary anatomy and prognosis of young, asymptomatic survivors of myocardial infarction

Author

Negus, Brian H., Willard, John E., Glamann, D. Brent, Landau, Charles, Snyder, Richard W., Hillis, L. David, and Lange, Richard A.

Subjects
Heart attack -- Prognosis, Coronary heart disease -- Prognosis, Health, Health care industry
Abstract

PURPOSE: To assess the coronary anatomy and prognosis of young, asymptomatic survivors of myocardial infarction. PATIENTS AND METHODS: The records Of all 5,316 patients who underwent cardiac catheterization at Parkland Memorial Hospital from July 1978 to December 1992 were reviewed to identify those patients 40 years old and younger who were catheterized within 60 days of a first myocardial infarction. Of 129 such patients, 48 had no indication for catheterization other than age (group I), and 81 were catheterized for spontaneous or provocable ischemia (group II). Extent of coronary artery disease and long-term follow-up were examined to ascertain the utility of cardiac catheterization in the asymptomatic patients. Results: The 2 groups were similar with respect to clinical variables. The asymptomatic survivors of infarction (group I) had fewer diseased coronary arteries than did those with post-infarction ischemia (group II) (1.0 [+ or -] 0.7 versus 1.5 [+ or -] 1.0 [mean + or -] SD] diseased coronary arteries, respectively; P = 0.002) and were less likely to have left-main or 3-vessel coronary artery disease (4% versus 20%, respectively; P = 0.027). Eight-three percent of the group I patients had one diseased coronary artery, or less, and no patient underwent angioplasty or coronary bypass grafting on the basis of catheterization. After 71 [+ or -] 44 months of follow-up, only 5 (10%) had died of a coronary-related event. CONCLUSIONS: Asymptomatic survivors of myocardial infarction who are 40 years of age or less rarely have left-main or 3-vessel coronary artery disease, and their long-term prognosis with conservative therapy is good. Routine catheterization in these patients is not warranted and should be reserved for those who manifest spontaneous or provocable post-infarction ischemia.

Published
1994

28. Alleviation of cocaine-induced coronary vasoconstriction with intravenous verapamil

Author

Negus, Brian H., Willard, John E., Hillis, L. David, Glamann, D. Brent, Landau, Charles, Snyder, Richard W., and Lange, Richard A.

Subjects
Cocaine -- Usage, Vasoconstriction -- Causes of, Verapamil -- Evaluation, Heart, Health
Abstract

Cocaine use has been associated with a number of cardiovascular complications, including angina pectoris, myocardial infarction and sudden cardiac death.[1-4] Previous studies in humans have shown that cocaine causes epicardial coronary vasoconstriction, which is mediated, at least in part, by [alpha]-adrenergic stimulation.[5-10] Studies in experimental animals have suggested that cocaine may also cause vasoconstriction by altering calcium transport in vascular smooth muscle,[11] and this can be attenuated by calcium channel blockade. The present study was performed to assess the effect of verapamil, a calcium antagonist, on cocaine-induced coronary vaso-constriction in humans.

Published
1994

29. Frequency, cause and effect on operative outcome of depressed left ventricular ejection fraction in mitral stenosis

Author

Snyder, Richard W., II, Lange, Richard A., Willard, John E., Glamann, D. Brent, Landau, Charles, Negus, Brian H., and Hillis, L. David

Subjects
Mitral valve stenosis, Heart ventricle, Left -- Physiological aspects, Health
Abstract

To assess the incidence, pathophysiology and influence on operative outcome of a depressed left ventricular (LV) ejection fraction (EF) in patients with mitral stenosis (MS), demographic, hemodynamic and cineangiographic data on 72 patients (16 men, 56 women, aged 19 to 75 years) with isolated MS were reviewed. Of the 45 who had mitral commissurotomy or replacement, operative course and functional class before and after surgery were assessed. Of the 72 patients, 21 (29%) had an LVEF [is less than or equal to]0.50. These 21 were similar to the 51 with an LVEF >0.50 in age, gender, heart rate, intracardiac pressures, transvalvular gradient and valve area, but they had larger LV end-diastolic (79 [+ or -] 19 [mean [+ or -] SD] vs 59 [+ or -] 15 ml/[m.sup.2], p 0.50. (Am J Cardiol 1994;73:65-69)

Published
1994

32. Hydrogen inhalation for detecting intracardiac left-to-right shunting in adults

Author

Glamann, D. Brent, Lange, Richard A., Willard, John E., Landau, Charles, and Hillis, L. David

Subjects
Hydrogen, Heart -- Abnormalities, Cardiac catheterization -- Methods, Health
Abstract

The hydrogen inhalation technique is easily performed and exquisitely sensitive for detecting intracardiac left-to-right shunting. Previous studies of this technique relied heavily on data from infants and children, and the distinction between 'normal' and 'abnormal' was imprecise and somewhat arbitrary. The present study was done to assess the results of hydrogen inhalation in adults with and without intracardiac left-to-right shunting. In 45 adult subjects (15 men, 30 women, aged 18 to 72 years) (18 without and 27 with intracardiac left-to-right shunting), the elapsed time from hydrogen inhalation to its appearance in the pulmonary artery was measured. The 18 patients without shunting had an appearance time of 12 [+ or -] 3 (mean [+ or -] SD) seconds, and it was [greater than or equal to]9 seconds in all. In contrast, the 27 subjects with shunting had an appearance time of 1.5 [+ or -] 0.7 second, with only 1 of 27 being [greater than or equal to]3 seconds. There was no relation between the magnitude of left-to-right shunting and the hydrogen appearance time. Thus, the hydrogen inhalation technique easily and reliably separates adult subjects with and without intracardiac left-to-right shunting, with no overlap between the 2 groups.

Published
1993

33. Effect of coronary angioplasty on late potentials one to two weeks after acute myocardial infarction

Author

Boehrer, James D., Glamann, D. Brent, Lange, Richard A., Willard, John E., Brogan, Walter C., III, Eichhorn, Eric J., Grayburn, Paul A., Anwar, Azam, and Hillis, L. David

Subjects
Heart attack -- Prognosis, Transluminal angioplasty -- Usage, Health
Abstract

In survivors of acute myocardial infarction (AMI), the restoration of anterograde flow in the infarct artery, even if accomplished beyond the time for myocardial salvage, may reduce the frequency of subsequent arrhythmic events and sudden death. Twelve subjects (8 men and 4 women, aged 39 to 69 years) with a first AMI, signal-averaged electrocardiographic late potentials, and an occluded infarct artery were prospectively identified. Seven (group I) had successful coronary angioplasty 6 to 15 days after AMI, and 5 (group II) were managed conservatively. Follow-up signal-averaged electrocardiography was performed 3 to 7 months later. From baseline to follow-up, the 7 group I subjects had a significant change in QRS duration (117 [+ or -] 13 [mean + SD] to 102 [+ or -] 10 ms), root-mean-square voltage (10.4 [+ or -] 4.7 to 31.0 [+ or -] 7.6 [Micro]V), and low-amplitude signal duration (47.5 [+ or -] 8.5 to 32.4 [+ or -] 5.2 ms) (p [less than or equal to]0.05 for all 3 variables). No group I patient had a late potential at follow-up. In contrast, the 5 group II patients showed no change in QRS duration or low-amplitude signal duration from baseline to follow-up, and all 5 had a late potential at follow-up. At follow-up, the root-mean-square voltage was significantly greater and the low-amplitude signal and QRS durations significantly less in group I than in group II (p (Am J Cardiol 1992;70:1515-1519)

Published
1992

34. Iowa is heart-healthy

Author

Willard, John

Subjects
Iowa -- Buildings and facilities, Real estate industry -- Economic aspects, Real estate development -- Iowa, Business, Real estate industry
Published
1992

35. New projects stream into Quad Cities area

Author

Willard, John

Subjects
Iowa -- Economic aspects, Illinois -- Economic aspects, Real estate development -- Midwestern United States, Real estate developers -- Economic aspects, Business, Real estate industry
Published
1991

36. Effects of bucindolol on neurohormonal activation in congestive heart failure

Author

Eichhorn, Eric J., McGhie, A. Iain, Bedotto, John B., Corbett, James R., Malloy, Craig R., Hatfield, Barbara A., Deitchman, David, Willard, John E., and Grayburn, Paul A.

Subjects
Adrenergic beta blockers -- Physiological aspects, Congestive heart failure -- Drug therapy, Health
Abstract

To examine the effects of [BETA]-adrenergic blockade on neurohormonal activation in patients with congestive heart failure, 15 men had assessments of hemodynamics and supine peripheral renin and norepinephrine levels before and after 3 months of oral therapy with bucindolol, a nonselective [beta] antagonist. At baseline, plasma renin activity did not correlate with any hemodynamic parameter. However, norepinephrine levels had a weak correlation with left ventricular end-diastolic pressure (r = 0.74, p, Congestive heart failure (CHF) is a condition resulting from the inability of the heart to pump sufficient blood to the body. There are numerous neuroendocrine alterations that occur in CHF, some of which represent the body's attempt to compensate for the insufficient blood supply. However, in some cases, these neuroendocrine changes can actually work against normalizing the imbalance. To investigate the effects of one therapeutic strategy, the administration of beta blockers (agents that inhibit the actions of norepinephrine in causing the constriction of blood vessels) on the elevated neuroendocrine levels seen in CHF, 15 men with CHF were studied before and during three months of oral administration of the nonselective (acting on all blood vessels) beta blocker bucindolol. Prior to drug treatment, elevated renin activity (an enzyme involved in the synthesis of angiotensin, a hormone causing elevated blood pressure) was not correlated with any index of cardiovascular function; norepinephrine levels, on the other hand, did show a correlation with several of these indices. During treatment, renin levels decreased, while norepinephrine levels were unchanged. Heart rate decreased in spite of the lack of alteration in norepinephrine levels, suggesting that bucindolol was, in fact, blocking the receptors. In individual patients, neither changes in renin nor norepinephrine levels predicted improvement in cardiovascular status. These results are consistent with the interpretation that beta blockade by bucindolol reduces neurohormonal activation in CHF. (Consumer Summary produced by Reliance Medical Information, Inc.)

Published
1991

37. Collaborative Working Relationships to Meet Classroom Needs.

Author

Willard, John

Abstract

The paper describes the Interactive Model for Professional Action and Change for Teachers (IMPACT), a collaborative project based on a consulting teacher model which provides inservice classroom based inservice training for teachers and individualized instruction for high school students with mild handicapping conditions. The model incorporates three levels of inservice teacher training: workshops (arranged by the consulting teachers in response to the basic competency areas identified by groups of teachers); courses (offered for graduate credit by the consulting teachers in areas which include learning strategies, curriculum development, and behavior management); and consultation (provided in the form of team teaching between regular and special educators). The IMPACT program in an English department and in a math department exemplified competency training and use of the workshop for inservice training. It is concluded that the model of collaboration between regular and consulting teachers utilized five components in inservice training (theory, demonstration, practice, feedback, and coaching) and resulted in both effective staff development and actual change in the classroom. (SB)

Published
1982

Catalog

Books, media, physical & digital resources
See catalog results