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David Koch

Koch in 2015 David Hamilton Koch ( ; May 3, 1940 – August 23, 2019) was an American businessman, political activist, philanthropist, and chemical engineer. In 1970, he joined the family business: Koch Industries, the second largest privately held company in the United States. He became president of the subsidiary Koch Engineering in 1979 and became a co-owner of Koch Industries (along with elder brother Charles) in 1983. Koch served as an executive vice president of Koch Industries until he retired due to health issues in 2018.

Koch was a libertarian. He was the 1980 Libertarian candidate for Vice President of the United States and helped finance the campaign. He founded Citizens for a Sound Economy and donated to advocacy groups and political campaigns, most of which were Republican. Koch became a Republican in 1984; in 2012, he spent over $100 million in a failed bid to oppose the re-election of President Barack Obama.

Koch was the fourth-richest person in the United States in 2012 and was the wealthiest resident of New York City in 2013. As of June 2019, Koch was ranked as the 11th-richest person in the world (tied with his brother Charles), with a fortune of $50.5 billion. Koch contributed to the Lincoln Center, Sloan Kettering, NewYork–Presbyterian Hospital, and the Dinosaur Wing at the American Museum of Natural History. The New York State Theater at Lincoln Center, home of the New York City Ballet, was renamed the David H. Koch Theater in 2008 following Koch's gift of $100 million for the renovation of the theater. Provided by Wikipedia
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  1. 1
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    Impact of the novel MRI contrast agent gadopiclenol on radiotherapy decision making in patients with brain metastases by Sarria, Gustavo R. (Author) , Fleckenstein, Jens (Author) , Eckl, Miriam (Author) , Stieler, Florian (Author) , Ruder, Arne Mathias (Author) , Bendszus, Martin (Author) , Schmeel, Christopher (Author) , Koch, David (Author) , Feißt, Andreas (Author) , Essig, Marco (Author) , Wenz, Frederik (Author) , Giordano, Frank Anton (Author) ,


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  2. 2
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    Non-invasive physical plasma for preventing radiation dermatitis in breast cancer: results from an intrapatient-randomised double-blind placebo-controlled trial: original research... by Dejonckheere, Cas S. (Author) , Layer, Julian Philipp (Author) , Nour, Younèss (Author) , Layer, Katharina (Author) , Glasmacher, Andrea (Author) , Wiegreffe, Shari (Author) , Fuhrmann, Arne (Author) , Caglayan, Lara (Author) , Grau, Franziska (Author) , Sarria, Gustavo Renato (Author) , Scafa, Davide (Author) , Koch, David (Author) , Heimann, Martina (Author) , Leitzen, Christina (Author) , Köksal, Mümtaz Ali (Author) , Röhner, Fred (Author) , Müdder, Thomas (Author) , Dejonckheere, Egon (Author) , Schmeel, Frederic Carsten (Author) , Anzböck, Teresa (Author) , Lindner, Kira (Author) , Bachmann, Anne (Author) , Abramian, Alina (Author) , Kaiser, Christina (Author) , Faridi, Andree (Author) , Mustea, Alexander (Author) , Giordano, Frank Anton (Author) , Stope, Matthias Bernhard (Author) , Schmeel, Leonard Christopher (Author) ,


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  3. 3
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    Outcome assessment of intraoperative radiotherapy for brain metastases: results of a prospective observational study with comparative matched-pair analysis by Layer, Julian (Author) , Hamed, Motaz (Author) , Potthoff, Anna-Laura (Author) , Dejonckheere, Cas S. (Author) , Layer, Katharina (Author) , Sarria, Gustavo R. (Author) , Scafa, Davide (Author) , Koch, David (Author) , Köksal, Mümtaz (Author) , Kugel, Fabian (Author) , Grimmer, Molina (Author) , Holz, Jasmin A. (Author) , Zeyen, Thomas (Author) , Friker, Lea L. (Author) , Borger, Valeri (Author) , Schmeel, F. Carsten (Author) , Weller, Johannes (Author) , Hölzel, Michael (Author) , Schäfer, Niklas (Author) , Garbe, Stephan (Author) , Forstbauer, Helmut (Author) , Giordano, Frank Anton (Author) , Herrlinger, Ulrich (Author) , Vatter, Hartmut (Author) , Schneider, Matthias (Author) , Schmeel, L. Christopher (Author) ,


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  4. 4
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    Decision regret in breast cancer patients after adjuvant radiotherapy by Köksal, Mümtaz (Author) , Hoppe, Clara (Author) , Schröder, Anna-Katharina (Author) , Scafa, Davide (Author) , Koch, David (Author) , Sarria, Gustavo R. (Author) , Leitzen, Christina (Author) , Abramian, Alina (Author) , Kaiser, Christina (Author) , Faridi, Andree (Author) , Henkenberens, Christoph (Author) , Schmeel, Leonard C. (Author) , Giordano, Frank Anton (Author) ,


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  5. 5
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    Low rate of function-limiting side effects with high-dose adjuvant radiotherapy in high-grade soft tissue extremity sarcomas: a retrospective single-center analysis over 10 years by Köksal, Mümtaz (Author) , van der Hoek, Maike (Author) , Scafa, Davide (Author) , Koch, David (Author) , Leitzen, Christina (Author) , Schmeel, Leonard C. (Author) , Feldmann, Georg (Author) , Strauss, Andreas (Author) , Koob, Sebastian (Author) , Giordano, Frank Anton (Author) ,


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  6. 6
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    Intraoperative or postoperative stereotactic radiotherapy for brain metastases: time to systemic treatment onset and other patient-relevant outcomes by Dejonckheere, Cas S. (Author) , Layer, Julian P. (Author) , Hamed, Motaz (Author) , Layer, Katharina (Author) , Glasmacher, Andrea (Author) , Friker, Lea L. (Author) , Potthoff, Anna-Laura (Author) , Zeyen, Thomas (Author) , Scafa, Davide (Author) , Koch, David (Author) , Garbe, Stephan (Author) , Holz, Jasmin A. (Author) , Kugel, Fabian (Author) , Grimmer, Molina (Author) , Schmeel, Frederic Carsten (Author) , Gielen, Gerrit H. (Author) , Forstbauer, Helmut (Author) , Vatter, Hartmut (Author) , Herrlinger, Ulrich (Author) , Giordano, Frank Anton (Author) , Schneider, Matthias (Author) , Schmeel, Leonard Christopher (Author) , Sarria, Gustavo R. (Author) ,


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  7. 7
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    Risk assessment, surveillance, and nonpharmaceutical prevention of acute radiation dermatitis: results of a multicentric survey among the German-speaking radiation oncology communi... by Layer, Katharina (Author) , Layer, Julian (Author) , Glasmacher, Andrea R. (Author) , Sarria, Gustavo R. (Author) , Böhner, Alexander M. C. (Author) , Layer, Yonah L. (Author) , Dejonckheere, Cas S. (Author) , Garbe, Stephan (Author) , Feyer, Petra (Author) , Baumert, Brigitta G. (Author) , Schendera, Anke (Author) , Baumann, René (Author) , Krug, David (Author) , Köksal, Mümtaz A. (Author) , Koch, David (Author) , Scafa, Davide (Author) , Leitzen, Christina (Author) , Hölzel, Michael (Author) , Giordano, Frank Anton (Author) , Schmeel, Christopher (Author) ,


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  8. 8
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    Five-fraction stereotactic radiotherapy for brain metastases: a retrospective analysis by Layer, Julian (Author) , Layer, Katharina (Author) , Sarria, Gustavo R. (Author) , Röhner, Fred (Author) , Dejonckheere, Cas S. (Author) , Friker, Lea L. (Author) , Zeyen, Thomas (Author) , Koch, David (Author) , Scafa, Davide (Author) , Leitzen, Christina (Author) , Köksal, Mümtaz (Author) , Schmeel, Frederic Carsten (Author) , Schäfer, Niklas (Author) , Landsberg, Jennifer (Author) , Hölzel, Michael (Author) , Herrlinger, Ulrich (Author) , Schneider, Matthias (Author) , Giordano, Frank Anton (Author) , Schmeel, Leonard Christopher (Author) ,


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  9. 9
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    Lung sparing and ribcage coverage in total body irradiation delivered by helical tomotherapy by Köksal, Mümtaz (Author) , Baumert, Jonathan (Author) , Schoroth, Felix (Author) , Scafa, Davide (Author) , Koch, David (Author) , Leitzen, Christina (Author) , Sarria, Gustavo R. (Author) , Giordano, Frank Anton (Author) , Chatzikonstantinou, Georgios (Author) , Schmeel, Christopher (Author) ,


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  10. 10
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    Helical versus static approaches to delivering tomotherapy to the junctional target for patients taller than 135 cm undergoing total body irradiation by Köksal, Mümtaz (Author) , Baumert, Jonathan (Author) , Schoroth, Felix (Author) , Müdder, Thomas (Author) , Scafa, Davide (Author) , Koch, David (Author) , Leitzen, Christina (Author) , Sarria, Gustavo R. (Author) , Schmeel, Christopher (Author) , Giordano, Frank Anton (Author) ,


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  11. 11
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    Small grains as recombination hot spots in perovskite solar cells by An, Qingzhi (Author) , Paulus, Fabian (Author) , Becker-Koch, David (Author) , Cho, Changsoon (Author) , Sun, Qing (Author) , Weu, Andreas (Author) , Bitton, Sapir (Author) , Tessler, Nir (Author) , Vaynzof, Yana (Author) ,


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  12. 12
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    Ligand dependent oxidation dictates the performance evolution of high efficiency PbS quantum dot solar cells by Becker-Koch, David (Author) , Albaladejo-Siguan, Miguel (Author) , Lami, Vincent (Author) , Paulus, Fabian (Author) , Xiang, Hengyang (Author) , Chen, Zhuoying (Author) , Vaynzof, Yana (Author) ,


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  13. 13
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    Probing charge transfer states at organic and hybrid internal interfaces by photothermal deflection spectroscopy by Becker-Koch, David (Author) , Rivkin, Boris (Author) , Paulus, Fabian (Author) , Vaynzof, Yana (Author) ,


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  14. 14
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    Enhancing the open-circuit voltage of perovskite solar cells by up to 120 mv using π-extended phosphoniumfluorene electrolytes as hole blocking layers by An, Qingzhi (Author) , Sun, Qing (Author) , Weu, Andreas (Author) , Becker-Koch, David (Author) , Paulus, Fabian (Author) , Arndt, Sebastian (Author) , Stuck, Fabian (Author) , Hashmi, A. Stephen K. (Author) , Vaynzof, Yana (Author) ,


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  15. 15
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    Triptycenyl‐phenazino‐thiadiazole as acceptor in organic bulk-heterojunction solar cells by Leibold, David (Author) , Lami, Vincent (Author) , Hofstetter, Yvonne J. (Author) , Becker-Koch, David (Author) , Weu, Andreas (Author) , Paulus, Fabian (Author) , Bunz, Uwe H. F. (Author) , Vaynzof, Yana (Author) ,


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  16. 16
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    High performance planar perovskite solar cells by ZnO electron transport layer engineering by An, Qingzhi (Author) , Faßl, Paul (Author) , Hofstetter, Yvonne J. (Author) , Becker-Koch, David (Author) , Bausch, Alexandra (Author) , Hopkinson, Paul E. (Author) , Vaynzof, Yana (Author) ,


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  17. 17
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    Role of microstructure in oxygen induced photodegradation of methylammonium lead triiodide perovskite films by Sun, Qing (Author) , Faßl, Paul (Author) , Becker-Koch, David (Author) , Bausch, Alexandra (Author) , Rivkin, Boris (Author) , Hopkinson, Paul E. (Author) , Vaynzof, Yana (Author) ,


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  18. 18
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    The Kepler mission: a search for terrestrial planets by Koch, David (Author) , Jordan, Stefan (Author) ,


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