On the origin of terpenes in symbiotic associations between marine invertebrates and algae (zooxanthellae). Culture studies and an application of ^(13)C/^(12)C isotope ratio mass spectrometry.

^(13)C/^(12)C ratios of sets of compounds, algal sterols and terpenes, isolated from dinoflagellate symbiont (zooxanthellae)-bearing soft corals and gorgonians were determined. In most cases, a significant difference was found between the δ^(13)C values of the terpenes and of the algal sterols from the same set, the algal sterols containing less ^(13)C than the terpenes. These results can only be explained if terpenes are synthesized by the host. Cultured zooxanthellae, isolated from symbiotic associations, do not make terpenes. Algal sterols of the various sets do not all have the same δ^(13)C value: average values range from -18.2 to -24.3‰. A consistent difference of about 7‰ in the δ^(13)C values of sterols of cultured symbionts isolated from two of the gorgonians was found. This has potential applications for the taxonomy of zooxanthellae, most of which are believed by some specialists to be one discrete species

Science, performance and transformation: performance for a ‘scientific’ age?

This is an accepted manuscript of an article published by Taylor & Francis in International Journal of Performance Arts and Digital Media on 30/09/2014, available online: https://www.tandfonline.com/doi/full/10.1080/14794713.2014.946282 The accepted version of the publication may differ from the final published version.The ‘two cultures’ of science and the arts/humanities are often considered at odds, but digital technology, and the broader implications of digital culture, provides a model for more productive forms of exchange and hybridity. This article applies theories of intercultural theatre practice to performance that works across this cultural divide to explore the types of interaction that take place. Following a historical discussion of the science/art divide, a three-fold model is proposed and explored through case studies including Djerassi and Laszlo's 2003 NO, Eduardo Kac's 1999 Genesis, Reckless Sleepers' 1996/2006 Schrödinger's Box, and John Barrow's 2002 Infinities. It is argued that science operates through the creation of mathematical models of aspects of the physical world, whilst art similarly constructs different kinds of models for understanding the social/cultural and occasionally physical world. Digital technology expands the modelling possibilities both directly, through simulation, virtual reality and integration into ‘live’ activities of augmented and intermedia performance, and through the transformative nature of digital culture

Optical Rotatory Dispersion

xiii;ill.;293hal.;24c

The Politics of Contraception

RECORDING NOT AVAILABLE. (This information was taken from the Distinguished Scientist Lecture Series Program 1980-81). Dr. Djerassi was born in Vienna, Austria, received his Ph.D. from the University of Wisconsin, and began his career as a research chemist for the Ciba Pharmaceutical Company. He has held a variety of positions with the Syntex Corporation - - associate director of chemical research, vice-president of research, and director. He is now president of the Zoecon Corporation, which manufactures and markets pet care and agricultural products. Dr. Djerassi taught at Wayne State University and is currently professor of chemistry at Stanford University. Among his awards and honors are: the American Chemical Society Award in Pure Chemistry, the Baekeland Medal, the Chemical Pioneer A ward of the American Institute of Chemists, and the Perkin Medal, awarded by the Society of Chemical Industry. In 1978, Dr. Djerassi was elected to the National Inventors Hall of Fame. Dr. Djerassi is an authority on the reproductive systems of humans, animals, and insects, and has played a major role in the development of the oral contraceptive. He has written extensively about his areas of interest: the chemistry of natural products such as antibiotics, alkaloids, and steroids; the synthesis of medicinals such as antihistamines and steroidal anti-inflammatory agents; and the applications of physical measurements and computer techniques to organic chemical problems. In his lecture, Dr. Djerassi will discuss The Politics of Contraception.https://digitalcommons.bard.edu/dsls_1980_1981/1006/thumbnail.jp

Foreplay Hannah Arendt, the Two Adornos, and Walter Benjamin

Brimming with intrigue and the friction created when strong personalities clash,Foreplayexplores the deeply human and psychologically fascinating private lives of twentieth-century intellectual giants Hannah Arendt, Walter Benjamin, and Theodor W. Adorno, and Adornorsquo;s wife Gretel.Intro -- Preface -- Scene 1 -- Scene 2 -- Scene 3 -- Scene 4 -- Scene 5 -- Scene 6 -- Scene 7Brimming with intrigue and the friction created when strong personalities clash,Foreplayexplores the deeply human and psychologically fascinating private lives of twentieth-century intellectual giants Hannah Arendt, Walter Benjamin, and Theodor W. Adorno, and Adornorsquo;s wife Gretel.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries

2003 Erasmus Lecture Sex and reproduction: ready for divorce?

The effective separation of sex ( in bed ) and fertilization ( under the microscope ) has already been practised successfully for the past 25 years by well over one million people virtually all of them suffering from infertility problems. But why, where and when will fertile people resort to assisted reproductive techniques to become parents? And why are the prospects for fundamentally new methods of birth control so dim?