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	David Rittenberg, November 11, 1906 — January 24, 1970 \| By David Shemin and Ronald Bentley \| Biographical Memoirs
		Rittenberg, one of Urey's graduate students, obtained a Ph.D. degree in 1934 for his 30-page thesis, "Some Equilibria Involving Isotopes of Hydrogen." Urey was anxious to promote the study of both chemical and biological properties of deuterium, and received funding from the Rockefeller Foundation.
		The second elaboration was that Rittenberg, Shemin, and London began to study the synthesis of protoporphyrin in vitro using immature non-nucleated mammalian erythrocytes and the red blood cells of the duck.
		David Sprinson worked with Rittenberg on ammonia utilization for protein synthesis and the rate of reaction of dietary amino acids with tissue proteins before going on to the major, independent study of the pathway for shikimic acid biosynthesis, for which he received much recognition.
	stills.nap.edu /html/biomems/drittenberg.html (4200 words)

	30 (Site not responding. Last check: 2007-10-08)
		In this article, David Shemin, who is now in retirement, describes how in 1944 he ingested 66 g of "N-labeled glycine in order to determine the half-life of hemoglobin and other blood proteins.
		Since both Rittenberg and I accepted unquestioningly the concept that body constituents are in a continuous state of flux, we were indeed astonished by this finding.
		We then had a serious discussion in which he more than mildly suggested that I either mixed up the samples or somehow contaminated the sample and 1, offended by the implication that my technique was less than impeccable suggested that his mass spectrometer was returning incorrect data.
	www.bmolchem.wisc.edu /teachinglab/fall675/shemin.html (3849 words)

	Nat' Academies Press, Biographical Memoirs V.80 (2001)
		Biographical Memoirs: Volume 80 DAVID RITTENBERG November 11, 1906–January 24, 1970 BY DAVID SHEMIN AND RONALD BENTLEY DAVID RITTENBERG WAS a leader in the development of the isotopic tracer technique for the study of biochemical reactions in intermediary metabolism.
		With considerable foresight Rittenberg and Schoenheimer stated that cholesterol “is formed by the coupling of smaller molecules, possibly those which have been postulated to be intermediates in the fat and carbohydrate metabolism.” In another laboratory, yeast grown in the presence of [2-2H] acetate contained a high 2H level in unidentified sterols.
		David Rittenberg—born, raised, and educated in New York City—was a quintessential New Yorker.
	www.nap.edu /openbook/0309082811/html/256.html (4659 words)

	tracer on Encyclopedia.com
		About these sorts of experiments, however, the argument could always be made that the derivatives were “unphysiological,” that is, did not occur naturally and might be handled by the enzymes of the body differently than “physiological” compounds.
		This difficulty was overcome in 1935 when Rudolf Schoenheimer and David Rittenberg described the use of the isotope deuterium (identical to the hydrogen atom except that it contains an extra neutron) in following biochemical reactions.
		They argued persuasively that deuterium-labeled compounds (those having a deuterium atom substituted for a hydrogen) were essentially indistinguishable from nonlabeled compounds as far as metabolic processes were concerned but that the amount of deuterium in any given sample could be quantitatively determined by the properties of the water produced upon combustion of the sample.
	www.encyclopedia.com /html/t1/tracer.asp (655 words)

	Smelting bei eLexi - das Onlinelexikon (Site not responding. Last check: 2007-10-08)
		David Nalbandian (born January 1, 1982, Cordoba, Argentina) is a professional tennis player from Argentina.
		David is a city in northwestern Panama on the Pan-American Highway.
		David Russell Strathairn (born 26 January 1949) is an American film and television actor.
	www.elexi.de /en/s/sm/smelting.html (309 words)

	Faculty of Chemistry - History
		David Rittenberg was appointed at its head in 1956.
		In 1952, Ernst David Bergmann left for the Hebrew University of Jerusalem, and in the same year founded the Israel Atomic Energy Commission.
		Ernest Wenkert briefly was acting head in 1964, succeeded in 1965 by David Lavie.
	www.weizmann.ac.il /chem/history.shtml (1650 words)

	Botany online: MIRROR SITE: Chronology - Historical Developments - Biological Sciences
		David Bruce investigated the life cycle of the protistan blood parasite Trypanosoma and the role of the tse-tse fly in its transmission.
		Rudolf Schoenheimer and David Rittenberg first used isotopes as tracers in the study of intermediate metabolism of carbohydrates and lipids.
		The laboratories of Feodor Lynen, David Ezra Green, and Severo Ochoa isolated the enzymes of fatty acid oxidation.
	www.biologie.uni-hamburg.de /b-online/e01/geschichte.htm (15153 words)

	Cuba (town), New York bei eLexi - das Onlinelexikon (Site not responding. Last check: 2007-10-08)
		Professor David Miles of Imperial College London is a British economist who produced a report in 2003 for the Chancellor to examine why long-term fixed rate mortgages are so unpopular.
		Dan (born 1931) and Frank Carney (born 1938) are the founders of Pizza Hut.
		David Grisman is a noted mandolinist and bluegrass musician.
	www.elexi.de /en/c/cu/cuba__town__new_york.html (636 words)

	David Rittenberg: Exploring Porphyrin Synthesis with Duck Blood and Isotope Tracers -- Kresge et al. 280 (15): e12 -- ...
		David Rittenberg: Exploring Porphyrin Synthesis with Duck Blood and Isotope Tracers -- Kresge et al.
		David Rittenberg (1906–1970) was born, raised, and educated
		Rittenberg remained at P and S until he retired.
	www.jbc.org /cgi/content/full/280/15/e12 (936 words)

	Active Skim View of: David Rittenberg
		DAVID RITTENBERG November 11, 1906–January 24, 1970 BY DAVID SHEMIN AND RONALD BENTLEY DAVID RITTENBERG WAS a leader in the development of the isotopic tracer technique for the study of biochemical reactions in intermediary metabolism.
		If substances such as natural fatty acids, amino acids, etc., are administered to an animal, we lose track of them the moment they enter the body, since they are mixed with the same substances already present.
		The brave volunteer, not identified in 1935, was actually Hans Hirschmann; the conversion was presumably accomplished by his intestinal bacterial flora.
	www.nap.edu /nap-cgi/skimit.cgi?isbn=0309082811&chap=256-275 (796 words)

	David Magone \| Learn Yoga, Yoga Classes from Yoga Masters to Beginners
		David Magone has taught classes and workshops throughout the United States for public entities such as, Nike, universities, and hospitals as well as private Yoga studios.
		David’s classes reflect a high level of devotion to the practice, providing students with challenges and fun.
		David’s encouragement, patience and intelligent interpretation of Yoga for everyday life are a valuable contribution to the Yoga community.
	www.innerharmonyyoga.com /david_magone.asp (110 words)

	Colorado College \| Iraq Experts
		Specialization: An expert on the Turkish economy, Rittenberg also is familiar with the Turkish society in general, along with its political economy and educational issues.
		Background: After earning a Ph.D. from Rutgers University and serving as a Fulbright Lecturer, Rittenberg has taught at CC since 1989.
		Rittenberg wrote about study abroad and Turkey in the post 9/11 world in an opinion piece -- click here to read it.
	www.coloradocollege.edu /news_events/whats_news/Iraqexperts.asp (781 words)

	Guess which Charity will benefit...?
		Within weeks, the venerable Boston-based firm, the publisher of Longfellow, Emerson, and Twain, became the target of a protest campaign by prominent Jewish leaders, the American Jewish Committee, and other groups.
		Louis Rittenberg, an editor who later supervised the revision of The Universal Jewish Encyclopedia, accused Houghton Mifflin of trying "to cash in on the misery and catastrophe of an important section of the human family."
		Rittenberg's reproach was one of the first attacks on Houghton Mifflin's handling of Mein Kampf, but it wasn't to be the last.
	www.fpp.co.uk /Hitler/MeinKampf/HoughtonMifflin.html (945 words)

	Encyclopedia: List of biochemists (Site not responding. Last check: 2007-10-08)
		Judah Hirsch Quastel, British-Canadian biochemist and Companion of the Order of Canada Juda Hirsch Quastel (1899-1987), a British-Canadian biochemist who pioneered diverse research in neurochemistry, soil metabolism, cell metabolism, and cancer.
		David Rittenberg, (1906-1970), US, pioneer of radioactive tagging of molecules
		Radioactive decay is the set of various processes by which unstable atomic nuclei (nuclides) emit subatomic particles.
	www.nationmaster.com /encyclopedia/List-of-biochemists (2321 words)

	Harold C. Urey (Site not responding. Last check: 2007-10-08)
		At Berkeley, Urey was influence by the work of physicist Raymond T. Birge and soon joined Niels Bohr in Copenhagen to work on atomic structure at the Institutefor Theoretical Physics.
		On his return to the US in 1924 he taught at Johns HopkinsUniversity, and then at Columbia where he assembled ateam of associates that included Rudolph Schoenheimer, David Rittenberg and T. Taylor.
		During this time, Urey isolated deuterium by repeatedly distilling a sample of liquid hydrogen.In 1931, he and his associates went on to demonstrate the existence of heavy water.
	www.therfcc.org /harold-c.-urey-49164.html (386 words)

	OSB Bulletin Magazine - May 2003
		Remi A. Baptiste, John A. Hirschy, Adam S. Rittenberg, David R. Simon and Kenneth A. Williams joined the firm as partners, and Lewis B. Hampton is of counsel to the firm.
		Baptiste, Hampton, Hirschy, Rittenberg and Williams were formerly with Hagen, Hirschy & Grein of Portland.
		David Kramer has been appointed as attorney in charge of the torts section of the trial division of the Oregon Department of Justice.
	www.osbar.org /publications/bulletin/03may/moves.html (3144 words)

	poets in charleston, fool! (Site not responding. Last check: 2007-10-08)
		david asks that all of the work be family friendly.
		at the last minute, i found out i had to host an open mic at barnes and noble in west ashley, because david moulton couldn't be there.
		is the first open mic night of the new season for the barnes and noble in west ashley, 1812 sam rittenberg blvd. david moulton is the host.
	www.charlestonpoets.com (12813 words)

	David E Rowell Agency, Charleston, SC 29407 powered by LOOBOO.com (Site not responding. Last check: 2007-10-08)
		Our success is built on a commitment to providing you the best service of our insurance company.
		Whether your needs are simple or complex in nature, David E Rowell Agency can provide solutions that deliver results.
		We pride ourselves on being a company where customer service means timeliness, quality service and a friendly attitude.
	daviderowellagency.lbu.com (109 words)

	Boston.com / News / Local / Mass. / After long wait, seven pioneering couples take their vows (Site not responding. Last check: 2007-10-08)
		The civil ceremony, which began with a special rendition of "Here Come the Brides," was punctuated by applause for the legal victory the couple helped cement and praise for their resilience since a Boston clerk rejected their marriage license application in April 2001.
		On Monday, the first day the weddings were legal, hundreds of gay and lesbian partners pursued the newfound rights given them in the case, known as Goodridge v.
		At Arlington Street Church in Boston, David Wilson and Robert Compton were pronounced "partners for life" as they became the first of the seven plaintiff couples to marry.
	www.boston.com /news/local/massachusetts/articles/2004/05/17/after_long_wait_seven_pioneering_couples_take_their_vows (515 words)

	Harold C. Urey - Wikipedia, the free encyclopedia
		At Berkeley, Urey was influenced by the work of physicist Raymond T. Birge and soon joined Niels Bohr in Copenhagen to work on atomic structure at the Institute for Theoretical Physics.
		On his return to the US in 1924 he taught at Johns Hopkins University, and then at Columbia where he assembled a team of associates that included Rudolph Schoenheimer, David Rittenberg and T.
		During this time, Urey isolated deuterium by repeatedly distilling a sample of liquid hydrogen.
	en.wikipedia.org /wiki/Harold_Urey (444 words)

	Jay Rittenberg's Eye on Hollywood (Site not responding. Last check: 2007-10-08)
		Like the aforementioned Fuqua film, Shelton and his team also give this present project a dark, raw landscape with the focus likewise being on two officers-a new kid with his heart in the right place that is teamed up with the despicable veteran.
		Jay Rittenberg is a free-lance writer and film critic.
		All articles on this page are ©2003 Jay Rittenberg, and may not be reproduced, republished, rewritten, or redistributed without the express written consent of Jay Rittenberg.
	www.indiejournal.com /indiejournal/hollywood.htm (5720 words)

	Final Examination for CHEM-342, 30 May 1997
		However, if you find that you do not agree with your colleagues, you may submit a separate answer that will be graded and used in place of the group grade.
		Superimpose on the figure below what Shemin and Rittenberg would have observed had they analyzed hemin and protein from cells in other tissues such as liver where steady state concentrations of proteins result from a balance of synthesis and degradation.
		Shemin and Rittenberg (1946) showed that the average lifespan of a red blood cell in Shemin's body was about 127 days, a value similar to that estimated by other methods on other people.
	www.udel.edu /chem/white/teaching/CHEM342/FinalS97.html (1355 words)

	Horsefeathers: BRITISH ANTI-SEMITISM: ALIVE AND FLOURISHING IN ACADEMIA
		The levels of arrogance that we are now seeing in academia have probably not been observed since the days when the landed aristocracy was riding high.
		His letter to the Israeli scientist was inept at every level; he is not even an astute bigot, aware enough to hide his sins.
		David.......he wrote the Primo Levi thing to a poster on another blogsite, and I am sure, she thought it was a personal email.
	www.doctor-horsefeathers.com /archives/000227.php (3495 words)

	The Net Net: WatchMe
		Written by: David O. Russell, based on the story by John Ridley
		David O. Russell's memorable picture is much more than just a guy movie or a war picture; it successfully is able to mix humor and drama resulting in one of those kind of pictures that can satisfy both men and women audiences alike.
		Not only is George Clooney able to follow up his breakthrough role in Out of Sight with some superior work in a superior film, but Mark Wahlberg proves that Boogie Nights was no fluke with some bravo supporting work to the former ER star, while Ice Cube continues to show his versatility as a performer.
	www.thenetnet.com /watchme/3kings.html (902 words)

	Literary Agents and Their Authors' Books (By Agent: R) - Bill’s List
		Ann Rittenberg at Ann Rittenberg Agency: A Short History of Rudeness: Manners, Morals, and Misbehavior in Modern America by Mark Caldwell
		Ann Rittenberg at Ann Rittenberg Agency: Meena, Heroine of Afghanistan: The Martyr Who Founded RAWA, the Revolutionary Association of the Women of Afghanistan by Melody Ermachild Chavis
		Ann Rittenberg at Ann Rittenberg Agency: Shutter Island by Dennis Lehane
	www.wrhammons.com /literary-agents-r.htm (490 words)

	Famous people in medicine (Site not responding. Last check: 2007-10-08)
		After teaching at the University of Chicago (1946-54), Bloch became professor of biochemistry at Harvard, continuing his research on lipids, especially the unsaturated fatty acid components.
		In 1942 Bloch and David Rittenberg discovered that the two-carbon compound acetic acid was the major building block in the 30 or more steps in the biosynthesis (natural formation) of cholesterol, a waxlike alcohol found in animal cells.
		In his search to determine how acetic acid molecules combine in this process, Bloch was also joined by Feodor Lynen and his collaborators in Munich and Sir John Warcup Cornforth and George Popjak in England.
	reality-sites.org /people/konrad-bloch.htm (200 words)

	Konrad Bloch - Biography
		The first few years spent at Columbia with Schoenheimer and his associate David Rittenberg were certainly the most influential of his «Lehrjahre».
		During that time (in 1942) Bloch in collaboration with David Rittenberg initiated the work on the biological synthesis of cholesterol which was to occupy his research interests for nearly twenty years.
		In 1946 Bloch moved to the University of Chicago as Assistant Professor of Biochemistry.
	nobelprize.org /medicine/laureates/1964/bloch-bio.html (705 words)

	Serebella: Index - David Patrick Paul Alton, Baron Alton of Liverpool to David Robinson (drummer) (Site not responding. Last check: 2007-10-08)
		Serebella: Index - David Patrick Paul Alton, Baron Alton of Liverpool to David Robinson (drummer)
		David Patrick Paul Alton, Baron Alton of Liverpool to David Robinson (drummer)
		David Patrick Paul Alton, Baron Alton of Liverpool David Paymer David Pearce David Peck Todd David Pelletier David Pelzer David Perry David Peterson David Peter Reimer David Philip Heathcoat-Amory David Pierce David Pilkey David Pirner David Platt David Poe, Jr.
	www.serebella.com /encyclopedia/level2.php?start1=112500&start2=1000 (67 words)

	Find in a Library: David Rittenberg : November 11, 1906-January 24, 1970
		Find in a Library: David Rittenberg : November 11, 1906-January 24, 1970
		David Rittenberg : November 11, 1906-January 24, 1970
		WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries.
	worldcatlibraries.org /wcpa/ow/15f5b8ae96afc3eca19afeb4da09e526.html (64 words)

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