نتایج جستجو برای: racemization

تعداد نتایج: 821  

Journal: :Science 1971
J Wehmiller P E Hare

Isoleucine, one of several amino acids isolated from a suite of welldated deep-sea cores, shows a progressive increase in the degree of racemization with the age of the sediment. Amino acids in sediments show an initial rate of racemization almost an order of magnitude faster than the rate observed for free amino acids at a comparable pH and temperature. The observed kinetics depend on a variet...

Journal: :Chemical Engineering Science 2022

Deracemization techniques produce target enantiomer (eutomer) by converting the undesired (distomer) through a racemization reaction. We identify four differing in operation mode and temperature profile. The novel ”MSMPR-type deracemization” process consists of continuous seeded crystallization coupled with racemization. A steady state model enables us to feasible operating region spanned feed ...

Journal: :CrystEngComm 2023

We report the crystal structure of anhydrous form Oxyma-B, a relevant racemization suppressor for peptide synthesis, solved by direct space methodologies from X-Ray Powder Diffraction Data. The structure...

Journal: :Journal of the agricultural chemical society of Japan 1949

Journal: :Physical review letters 2011
T Aaltonen B Álvarez González S Amerio D Amidei A Anastassov A Annovi J Antos G Apollinari J A Appel A Apresyan T Arisawa A Artikov J Asaadi W Ashmanskas B Auerbach A Aurisano F Azfar W Badgett A Barbaro-Galtieri V E Barnes B A Barnett P Barria P Bartos M Bauce G Bauer F Bedeschi D Beecher S Behari G Bellettini J Bellinger D Benjamin A Beretvas A Bhatti M Binkley D Bisello I Bizjak K R Bland B Blumenfeld A Bocci A Bodek D Bortoletto J Boudreau A Boveia B Brau L Brigliadori A Brisuda C Bromberg E Brucken M Bucciantonio J Budagov H S Budd S Budd K Burkett G Busetto P Bussey A Buzatu C Calancha S Camarda M Campanelli M Campbell F Canelli A Canepa B Carls D Carlsmith R Carosi S Carrillo S Carron B Casal M Casarsa A Castro P Catastini D Cauz V Cavaliere M Cavalli-Sforza A Cerri L Cerrito Y C Chen M Chertok G Chiarelli G Chlachidze F Chlebana K Cho D Chokheli J P Chou W H Chung Y S Chung C I Ciobanu M A Ciocci A Clark G Compostella M E Convery J Conway M Corbo M Cordelli C A Cox D J Cox F Crescioli C Cuenca Almenar J Cuevas R Culbertson D Dagenhart N d'Ascenzo M Datta P de Barbaro S De Cecco G De Lorenzo M Dell'Orso C Deluca L Demortier J Deng M Deninno F Devoto M d'Errico A Di Canto B Di Ruzza J R Dittmann M D'Onofrio S Donati P Dong M Dorigo T Dorigo K Ebina A Elagin A Eppig R Erbacher D Errede S Errede N Ershaidat R Eusebi H C Fang S Farrington M Feindt J P Fernandez C Ferrazza R Field G Flanagan R Forrest M J Frank M Franklin J C Freeman Y Funakoshi I Furic M Gallinaro J Galyardt J E Garcia A F Garfinkel P Garosi H Gerberich E Gerchtein S Giagu V Giakoumopoulou P Giannetti K Gibson C M Ginsburg N Giokaris P Giromini M Giunta G Giurgiu V Glagolev D Glenzinski M Gold D Goldin N Goldschmidt A Golossanov G Gomez G Gomez-Ceballos M Goncharov O González I Gorelov A T Goshaw K Goulianos A Gresele S Grinstein C Grosso-Pilcher R C Group J Guimaraes da Costa Z Gunay-Unalan C Haber S R Hahn E Halkiadakis A Hamaguchi J Y Han F Happacher K Hara D Hare M Hare R F Harr K Hatakeyama C Hays M Heck J Heinrich M Herndon S Hewamanage D Hidas A Hocker W Hopkins D Horn S Hou R E Hughes M Hurwitz U Husemann N Hussain M Hussein J Huston G Introzzi M Iori A Ivanov E James D Jang B Jayatilaka E J Jeon M K Jha S Jindariani W Johnson M Jones K K Joo S Y Jun T R Junk T Kamon P E Karchin Y Kato W Ketchum J Keung V Khotilovich B Kilminster D H Kim H S Kim H W Kim J E Kim M J Kim S B Kim S H Kim Y K Kim N Kimura M Kirby S Klimenko K Kondo D J Kong J Konigsberg A V Kotwal M Kreps J Kroll D Krop N Krumnack M Kruse V Krutelyov T Kuhr M Kurata S Kwang A T Laasanen S Lami S Lammel M Lancaster R L Lander K Lannon A Lath G Latino I Lazzizzera T LeCompte E Lee H S Lee J S Lee S W Lee S Leo S Leone J D Lewis C-J Lin J Linacre M Lindgren E Lipeles A Lister D O Litvintsev C Liu Q Liu T Liu S Lockwitz N S Lockyer A Loginov D Lucchesi J Lueck P Lujan P Lukens G Lungu J Lys R Lysak R Madrak K Maeshima K Makhoul P Maksimovic S Malik G Manca A Manousakis-Katsikakis F Margaroli C Marino M Martínez R Martínez-Ballarín P Mastrandrea M Mathis M E Mattson P Mazzanti K S McFarland P McIntyre R McNulty A Mehta P Mehtala A Menzione C Mesropian T Miao D Mietlicki A Mitra H Miyake S Moed N Moggi M N Mondragon C S Moon R Moore M J Morello J Morlock P Movilla Fernandez A Mukherjee Th Muller P Murat M Mussini J Nachtman Y Nagai J Naganoma I Nakano A Napier J Nett C Neu M S Neubauer J Nielsen L Nodulman O Norniella E Nurse L Oakes S H Oh Y D Oh I Oksuzian T Okusawa R Orava L Ortolan S Pagan Griso C Pagliarone E Palencia V Papadimitriou A A Paramonov J Patrick G Pauletta M Paulini C Paus D E Pellett A Penzo T J Phillips G Piacentino E Pianori J Pilot K Pitts C Plager L Pondrom K Potamianos O Poukhov F Prokoshin A Pronko F Ptohos E Pueschel G Punzi J Pursley A Rahaman V Ramakrishnan N Ranjan I Redondo P Renton M Rescigno F Rimondi L Ristori A Robson T Rodrigo T Rodriguez E Rogers S Rolli R Roser M Rossi F Rubbo F Ruffini A Ruiz J Russ V Rusu A Safonov W K Sakumoto Y Sakurai L Santi L Sartori K Sato V Saveliev A Savoy-Navarro P Schlabach A Schmidt E E Schmidt M P Schmidt M Schmitt T Schwarz L Scodellaro A Scribano F Scuri A Sedov S Seidel Y Seiya A Semenov F Sforza A Sfyrla S Z Shalhout T Shears P F Shepard M Shimojima S Shiraishi M Shochet I Shreyber A Simonenko P Sinervo A Sissakian K Sliwa J R Smith F D Snider A Soha S Somalwar V Sorin P Squillacioti M Stancari M Stanitzki R St Denis B Stelzer O Stelzer-Chilton D Stentz J Strologas G L Strycker Y Sudo A Sukhanov I Suslov K Takemasa Y Takeuchi J Tang M Tecchio P K Teng J Thom J Thome G A Thompson E Thomson P Ttito-Guzmán S Tkaczyk D Toback S Tokar K Tollefson T Tomura D Tonelli S Torre D Torretta P Totaro M Trovato Y Tu F Ukegawa S Uozumi A Varganov F Vázquez G Velev C Vellidis M Vidal I Vila R Vilar J Vizán M Vogel G Volpi P Wagner R L Wagner T Wakisaka R Wallny S M Wang A Warburton D Waters M Weinberger W C Wester B Whitehouse D Whiteson A B Wicklund E Wicklund S Wilbur F Wick H H Williams J S Wilson P Wilson B L Winer P Wittich S Wolbers H Wolfe T Wright X Wu Z Wu K Yamamoto J Yamaoka T Yang

We report the most sensitive direct search for pair production of fourth-generation bottomlike chiral quarks (b') each decaying promptly to tW. We search for an excess of events with an electron or muon, at least five jets (one identified as due to a b or c quark), and an imbalance of transverse momentum by using data from pp collisions collected by the CDF II detector at Fermilab with an integ...

Journal: :Journal of Bacteriology 1959

Journal: :Journal of Biological Chemistry 1940

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 1999
R D Lins T A Soares R Ferreira R L Longo

The water accessibilities to aspartyl residues at positions 7 and 23 in the amyloid beta 1-28 peptide associated with Alzheimer's Disease have been calculated using different techniques. These accessibilities of water were compared to those of the succinimidyl residues (SUC) replacing the aspartyl ones (ASP). It has been possible to ascertain that these modifications (ASP--->SUC) lead to a sign...

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