نتایج جستجو برای: chiral recognition mechanism

تعداد نتایج: 838578  

Journal: :Journal of the American Chemical Society 2004
Dorothea Fiedler Dennis H Leung Robert G Bergman Kenneth N Raymond

A supramolecular metal-ligand assembly encapsulates a variety of cationic half-sandwich ruthenium complexes. Due to the chirality of both host and guest, chiral recognition is observed with diastereomeric excesses up to 70%. The chiral cavity can be used to carry out a dynamic resolution of the rapidly equilibrating enantiomers of the chiral organometallic guest.

2011
Shao-Yong Li Yao-Wei Xu Jun-Min Liu Cheng-Yong Su

Inherently chiral calixarenes, whose chirality is based on the absence of a planar symmetry or an inversion center in the molecules as a whole through the asymmetric array of several achiral groups upon the three-dimensional calix-skeletons, are challenging and attractive chiral molecules, because of their potential in supramolecular chemistry. The synthesis and optical resolution of all variet...

Journal: :physical chemistry research 0
samira peymani ferdowsi university of mashhad mohammad izadyar ferdowsi university of mashhad ali nakhaeipour ferdowsi university of mashhad

in this study, kinetics and mechanism of the sulfur dioxide adsorption on the single-walled carbon nanotubes (cnt) are investigated. three single-walled carbon nanotubes, including the armchair (6,6), chiral (6,5) and zigzag (6,0) cnts were chosen as the models and the different orientations of so2 molecule relative to the cnt axis were considered. the b3lyp functional within the 6-31g(d) basis...

This paper describes the vision system for a humanoid robot, which includes the mechanism that controls eyeball orientation and blinking process. Along with the mechanism designed, the orientation of the camera, integrated with controlling servomotors. This vision system is a bio-mimic, which is  designed to match the size of human eye. This prototype runs face recognition and identifies, match...

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...

2006
R. J. Baxter

It has been known for some time that the Boltzmann weights of the chiral Potts model can be parametrized in terms of hyperelliptic functions, but as yet no such parametrization has been applied to the partition and correlation functions. Here we show that for N = 3 the function S(t p) that occurs in the recent calculation of the order parameters can be expressed quite simply in terms of such a ...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2001
M Y Nie L M Zhou Q H Wang D Q Zhu

Enantiomer separation of mandelates and their analogs, which are important intermediates in asymmetric synthetic and pharmaceutical chemistry, was investigated by capillary gas chromatography using different cyclodextrin derivative chiral stationary phases (CD CSPs). The used cyclodextrin derivatives included permethylated beta-CD (PMBCD), permethylated gamma-CD, heptakis(2,6-di-O-butyl-3-O-but...

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