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359 results on '"Heyman, Michael"'

2. Contemporary Children’s Poetry: A Colloquy

Author

Svonkin, Craig, primary, Cadden, Mike, additional, Flynn, Richard, additional, Heyman, Michael, additional, Howard, Krystal, additional, Joseph, Michael, additional, Lawson, Jon Arno, additional, Paul, Lissa, additional, and Thomas Jr., Joseph T., additional

Published
2023
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3. Enzyme intermediates captured “on the fly” by mix-and-inject serial crystallography

Author

Olmos, Jose L, Pandey, Suraj, Martin-Garcia, Jose M, Calvey, George, Katz, Andrea, Knoska, Juraj, Kupitz, Christopher, Hunter, Mark S, Liang, Mengning, Oberthuer, Dominik, Yefanov, Oleksandr, Wiedorn, Max, Heyman, Michael, Holl, Mark, Pande, Kanupriya, Barty, Anton, Miller, Mitchell D, Stern, Stephan, Roy-Chowdhury, Shatabdi, Coe, Jesse, Nagaratnam, Nirupa, Zook, James, Verburgt, Jacob, Norwood, Tyler, Poudyal, Ishwor, Xu, David, Koglin, Jason, Seaberg, Matthew H, Zhao, Yun, Bajt, Saša, Grant, Thomas, Mariani, Valerio, Nelson, Garrett, Subramanian, Ganesh, Bae, Euiyoung, Fromme, Raimund, Fung, Russell, Schwander, Peter, Frank, Matthias, White, Thomas A, Weierstall, Uwe, Zatsepin, Nadia, Spence, John, Fromme, Petra, Chapman, Henry N, Pollack, Lois, Tremblay, Lee, Ourmazd, Abbas, Phillips, George N, and Schmidt, Marius

Subjects
Biochemistry and Cell Biology, Biological Sciences, Rare Diseases, Good Health and Well Being, Anti-Bacterial Agents, Bacterial Proteins, Biocatalysis, Ceftriaxone, Cephalosporin Resistance, Crystallography, X-Ray, Kinetics, Lasers, Models, Molecular, Mycobacterium tuberculosis, Time Factors, beta-Lactamases, Developmental Biology
Abstract

BackgroundEver since the first atomic structure of an enzyme was solved, the discovery of the mechanism and dynamics of reactions catalyzed by biomolecules has been the key goal for the understanding of the molecular processes that drive life on earth. Despite a large number of successful methods for trapping reaction intermediates, the direct observation of an ongoing reaction has been possible only in rare and exceptional cases.ResultsHere, we demonstrate a general method for capturing enzyme catalysis "in action" by mix-and-inject serial crystallography (MISC). Specifically, we follow the catalytic reaction of the Mycobacterium tuberculosis β-lactamase with the third-generation antibiotic ceftriaxone by time-resolved serial femtosecond crystallography. The results reveal, in near atomic detail, antibiotic cleavage and inactivation from 30 ms to 2 s.ConclusionsMISC is a versatile and generally applicable method to investigate reactions of biological macromolecules, some of which are of immense biological significance and might be, in addition, important targets for structure-based drug design. With megahertz X-ray pulse rates expected at the Linac Coherent Light Source II and the European X-ray free-electron laser, multiple, finely spaced time delays can be collected rapidly, allowing a comprehensive description of biomolecular reactions in terms of structure and kinetics from the same set of X-ray data.

Published
2018

8. A museum in crisis.

Author

Budiansky, Stephen and Pasternak, Douglas

Subjects
*EXHIBITIONS, BOMBARDMENT of Hiroshima, Japan, 1945
Abstract

Focuses on a long-simmering dispute over how the Smithsonian is telling the story of American history. Plans to display the Enola Gay--the plane that dropped the atomic bomb on Hiroshima--in an exhibit that makes the Japanese out as innocent victims of an unnecessary act of vengeance; How the incident left the institution shellshocked; Complaints about other exhibits; Reaction of Michael Heyman, secretary of the Smithsonian Institution.

Published
1995

9. Isles of Boshen : Edward Lear's literary nonsense in context

Author

Heyman, Michael Benjamin

Subjects
800, PR English literature
Abstract

This thesis investigates three major areas in the background of Edward Lear's literary nonsense: the parodic relationship with text and genre of early children's literature, the trends behind Lear's innovative illustration style, and the "nonsense" child construct manifest within the genre, which I claim is, in many ways, an expression of the Romantic conception of the child. The first chapter explores the parodic basis of nonsense. Most literary nonsense is referential; it often begins by inhabiting a genre or individual work, but what it does to the original is debatable. Some critics see nonsense as parody, while others claim that nonsense precludes parody in its intentional purposelessness. In this chapter I explore the critical debate surrounding parody in nonsense, and parody in general. I then examine the works of Lear, and some Carroll, looking first at their genuine, clear parodies. Next, I look at the many borderline cases of parody which use nonsense as a device but are not overshadowed by it. Finally, I discuss the more "pure" literary nonsense which, I argue, goes beyond parody to establish a new genre. The next chapter looks at the background of Lear's nonsense illustration. His style of illustration was a widely original combination of devices which are best seen in the context of the children's book illustrations of his day. With Bewick's innovations in woodcuts, the quality of children's illustrations had drastically improved. Diverging from this trend, Lear's illustrations hearken back to the rough chapbooks which he probably read as a child. His child-like style, coupled with an expert draughtsman's eye, began a rival tradition of children's book illustration. His illustrations are in way caricatures of chapbooks. His text and illustrations, like those of Blake and Hood, are integral, and their self-reflexiveness with the verses places them in an altogether different class of illustration.

Published
1999

20. EXHIBITING BIAS.

Author

Zengerle, Jason

Subjects
*EXHIBITIONS, *MUSEUM exhibits, *CLOTHING industry, UNITED States politics & government
Abstract

Cautions Michael Heyman, secretary of the Smithsonian Institute in Washington, D.C., against appeasing the Republican-dominated U.S. Congress. Explanation that Heyman should guard the institution's intellectual freedom as well as its vital educational mission; Information on a planned exhibition of the institution which was scuttled because of pressure from veterans groups and the Congress; Percentage of the funds of the institution which comes from the Congress; Efforts of the textile industry in the country to oppose an exhibition that will feature sweatshops in California which were shutdown by the government.

Published
1997

29. Anushka Ravishankar's Indian nonsense

Author

Heyman, Michael

Subjects
Literary techniques -- Criticism and interpretation, Authors -- Works -- Criticism and interpretation, Literature/writing, Publishing industry, Criticism and interpretation, Works
Abstract

In the West, we have become familiar with the genre of literary nonsense through works such as Edward Lear's 'The Owl and the Pussy-cat' and, of course, Lewis Carroll's Alice [...]

Published
2006

34. The natural breakup length of a steady capillary jet

Author

Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos, Gañán-Calvo, Alfonso M., Chapman, H. N., Heyman, Michael, Wiedorn, Max O., Knoska, Juraj, Du, Yang, Gañán Riesco, Braulio, Herrada Gutiérrez, Miguel Ángel, López Herrera Sánchez, José María, Cruz Mazo, Francisco, Bajt, Saša, Montanero, J. M., Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos, Gañán-Calvo, Alfonso M., Chapman, H. N., Heyman, Michael, Wiedorn, Max O., Knoska, Juraj, Du, Yang, Gañán Riesco, Braulio, Herrada Gutiérrez, Miguel Ángel, López Herrera Sánchez, José María, Cruz Mazo, Francisco, Bajt, Saša, and Montanero, J. M.

Abstract

Despite their fundamental and applied importance, a general model to predict the natural breakup length of steady capillary jets has not been proposed yet. In this work, we derive a scaling law with two universal constants to calculate that length as a function of the liquid properties and operating conditions. These constants are determined by fitting the scaling law to a large set of experimental and numerical measurements, including previously published data. Both the experimental and numerical jet lengths conform remarkably well to the proposed scaling law. This law is explained in terms of the growth of perturbations excited by the jet breakup itself.

Published
2019

36. Additional file 1: of Enzyme intermediates captured 'on the fly' by mix-and-inject serial crystallography

Author

Olmos, Jose, Pandey, Suraj, Martin-Garcia, Jose, Calvey, George, Katz, Andrea, Knoska, Juraj, Kupitz, Christopher, Hunter, Mark, Mengning Liang, Oberthuer, Dominik, Yefanov, Oleksandr, Wiedorn, Max, Heyman, Michael, Holl, Mark, Kanupriya Pande, Barty, Anton, Miller, Mitchell, Stern, Stephan, Shatabdi Roy-Chowdhury, Coe, Jesse, Nirupa Nagaratnam, Zook, James, Verburgt, Jacob, Norwood, Tyler, Ishwor Poudyal, Xu, David, Koglin, Jason, Seaberg, Matthew, Zhao, Yun, Saša Bajt, Grant, Thomas, Mariani, Valerio, Nelson, Garrett, Subramanian, Ganesh, Euiyoung Bae, Fromme, Raimund, Fung, Russell, Schwander, Peter, Frank, Matthias, White, Thomas, Weierstall, Uwe, Zatsepin, Nadia, Spence, John, Fromme, Petra, Chapman, Henry, Pollack, Lois, Tremblay, Lee, Ourmazd, Abbas, Phillips, George, and Schmidt, Marius

Abstract

Figure S1. Schematics of the short-time-point mixing injector. Figure S2. Selected views of the CEF binding site in the BlaC shard crystals including simulated annealing omit maps. Figure S3. Structural details, and simulated annealing omit maps, shard crystal form, subunit B (stereo representation, from 30 ms to 2 s). Figure S4. Structural details and simulated annealing omit maps, shard crystal form, subunit D (stereo representation, from 30 ms to 2 s). Figure S5. Structural details, and simulated annealing omit maps, needle crystal form (stereo representation, from 30 ms to 2 s). Figure S6. Backside view of the catalytic cleft of BlaC in the shard crystal form, structural details and simulated annealing omit maps (stereo representation, selected time points). Figure S7. 2mFo-DFc electron density in the catalytic clefts of BlaC in the shard crystal form (stereo representation, from 30 ms to 2 s). Figure S8. 2mFo-DFc electron density and structural details in the catalytic clefts of BlaC in the needle crystal form (stereo representation from 30 ms to 2 s). Figure S9. Details in the catalytic cleft of subunit B in the shard crystal form at 500 ms including the stacked CEF, 2FoFc maps, and simulated annealing omit maps (stereo representation). Figure S10. The catalytic cleft of BlaC, further details, including a difference map between the 500 ms and 100 ms time points. Figure S11. Crystal packing in shards and needles. Figure S12. Dynamic light scattering results. Table S1. B-factors for CEF species observed in the shard crystals at different time delays. (PDF 1646 kb)

Published
2018
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37. Changing of the castle guard.

Author

Marshall, Eliot

Subjects
WASHINGTON (D.C.), UNITED States, HEYMAN, Michael, SMITHSONIAN Institution Building (Washington, D.C.)
Abstract

Features Ira Michael Heyman, secretary-designate for the Smithsonian Institution. Controversial move in replacing a scientist with a lawyer; Personal and career background; Responsibilities. INSET: No scientist, but a friend of science, by E.M..

Published
1994
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38. It's Showtime for the New and Improved Smithsonian.

Author

Geracimos, Anna

Subjects
WASHINGTON (D.C.), UNITED States, SMITHSONIAN Institution (Washington, D.C.), HEYMAN, Michael
Abstract

Highlights the changes in the Smithsonian Institution. Legacy of Smithsonian Institution retiring Secretary Michael Heyman; Financial aspects of the Smithsonian Institution's expansion.

Published
2000

41. Enzyme Intermediates Captured “on-the-fly” by Mix-and-Inject Serial Crystallography

Author

Olmos, Jose, primary, Pandey, Suraj, additional, Martin-Garcia, Jose M., additional, Calvey, George, additional, Katz, Andrea, additional, Knoska, Juraj, additional, Kupitz, Christopher, additional, Hunter, Mark S., additional, Liang, Mengning, additional, Oberthuer, Dominik, additional, Yefanov, Oleksandr, additional, Wiedorn, Max, additional, Heyman, Michael, additional, Holl, Mark, additional, Pande, Kanupriya, additional, Barty, Anton, additional, Miller, Mitchell D., additional, Stern, Stephan, additional, Roy-Chowdhury, Shatabdi, additional, Coe, Jesse, additional, Nagaratnam, Nirupa, additional, Zook, James, additional, Verburgt, Jacob, additional, Norwood, Tyler, additional, Poudyal, Ishwor, additional, Xu, David, additional, Koglin, Jason, additional, Seaberg, Matt, additional, Zhao, Yun, additional, Bajt, Saša, additional, Grant, Thomas, additional, Mariani, Valerio, additional, Nelson, Garrett, additional, Subramanian, Ganesh, additional, Bae, Euiyoung, additional, Fromme, Raimund, additional, Fung, Russel, additional, Schwander, Peter, additional, Frank, Matthias, additional, White, Thomas, additional, Weierstall, Uwe, additional, Zatsepin, Nadia, additional, Spence, John, additional, Fromme, Petra, additional, Chapman, Henry N., additional, Pollack, Lois, additional, Tremblay, Lee, additional, Ourmazd, Abbas, additional, Phillips, George N., additional, and Schmidt, Marius, additional

Published
2017
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42. Smithsonian rethinks its science policy.

Author

Holden, Constance

Subjects
WASHINGTON (D.C.), UNITED States, SMITHSONIAN Institution (Washington, D.C.), HEYMAN, Michael
Abstract

Reports that Smithsonian Institution secretary Michael Heyman plans to consider call for changes regarding its policy on science exhibits. Replacement of an exhibit featuring the Enola Gay due to criticisms that it was turned into an attack on American nuclear weapons; Examination of Smithsonian's method of doing peer review.

Published
1995
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