Dubbed an"engineered living material," it is a 3D-printed structure made of a seaweed-based polymer combined with bacteria that have been genetically engineered to produce an enzyme that transforms various organic pollutants into benign molecules. The bacteria were also engineered to self-destruct in the presence of a molecule called theophylline, which is often found in tea and chocolate. This offers a way to eliminate them after they have done their job.
"This collaboration allowed us to apply our knowledge of the genetics and physiology of cyanobacteria to create a living material," said Susan Golden, a faculty member in the School of Biological Sciences."Now we can think creatively about engineering novel functions into cyanobacteria to make more useful products."
In this study, the researchers demonstrated that their material can be used to decontaminate the dye-based pollutant indigo carmine, which is a blue dye that is widely used in the textile industry to color denim. In tests, the material decolorized a water solution containing the dye.
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23rd Annual Toy Piano FestivalUC San Diego Library’s 23rd Annual Toy Piano FestivalTuesday, September 5 at noon in the Seuss Room of UC San Diego’s Geisel Library building. The September 5th date is of interest as John Cage’s birthday: Cage was the composer credited with writing the first “serious” work for toy piano. Performers at the festival include: Kris deKlerk, Kay Etheridge, Christian Hertzog, Kenneth Herman, Bridgette Hines, Bobby Ortiz, Sue Palmer, Scott Paulson, and Barbara Scheidker.Exciting new works for toy piano and traditional lullabies from many lands will be featured on the program. UC San Diego’s history with toy pianos dates back to 1966 when composer Robert Erickson, a founder of the university’s music department, wrote a piece for toy pianos and bells that premiered on California’s PBS television stations. The first composer to write a “serious” work for toy piano was John Cage, who visited the UC San Diego campus on several occasions, including a two-week stay as a Regents lecturer in the 1980s. Alumnus Scott Paulson, who was on campus for Cage’s lectures, cites the Cage influence as a major part of the impetus of this festival, of which Paulson is the director. Fun facts: - In 1999, a missing service bell at a Geisel Library help desk spawned a long streak of toy piano activity here at UC San Diego. The bell was replaced by a playful tiny keyboard and a sign: “Please play on toy piano for service.” And play they did! - The resultant flurry of toy piano activity led to the establishment of The Toy Piano Collection at Geisel Library. The Toy Piano Collection consists of actual instruments, commissioned scores, and extant literature and recordings. Most of the commissioned scores in the collection are composed by UC San Diego alumni. - In May 2001, the Library of Congress issued a subject heading and call number for toy piano scores because of the activities at Geisel Library. The collection can be viewed under the call number M 175 T69. For more information visit: library.uc
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