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Showing 9985 to 9996 of 14511 entries
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Enantioselective synthesis of planar chiral organonitrogen cycles.

Journal of the American Chemical Society

Tomooka K, Uehara K, Nishikawa R, Suzuki M, Igawa K.
PMID: 20565091
J Am Chem Soc. 2010 Jul 14;132(27):9232-3. doi: 10.1021/ja1024657.

Enantioselective synthesis of a planar chiral organonitrogen cycle has been newly developed based on the unprecedented prochiral face-selective cyclization of achiral linear precursors by an appropriate chiral promoter.

Theoretical and experimental study of fundamental differences in the noise suppression of high-speed SOA-based all-optical switches.

Optics express

Nielsen M, Mørk J, Suzuki R, Sakaguchi J, Ueno Y.
PMID: 19498496
Opt Express. 2005 Jun 27;13(13):5080-6. doi: 10.1364/opex.13.005080.

We identify a fundamental difference between the ASE noise filtering properties of different all-optical SOA-based switch configurations, and divide the switches into two classes. An in-band ASE suppression ratio quantifying the difference is derived theoretically and the impact of...

Solitary Peutz-Jeghers type hamartomatous polyps in the duodenum are not always associated with a low risk of cancer: two case reports.

Journal of medical case reports

Sekino Y, Inamori M, Hirai M, Suzuki K, Tsuzawa K, Akimoto K, Takahata A, Fujisawa N, Saito K, Tsunemi A, Tanaka M, Iida H, Sakamoto Y, Takahashi H, Koide T, Tokoro C, Abe Y, Nakajima A, Maeda S, Koyama S.
PMID: 21707968
J Med Case Rep. 2011 Jun 27;5:240. doi: 10.1186/1752-1947-5-240.

INTRODUCTION: A hamartomatous polyp without associated mucocutaneous pigmentation or a family history of Peutz-Jeghers Syndrome is diagnosed as a solitary Peutz-Jeghers type hamartomatous polyp. As compared with Peutz-Jeghers Syndrome, Peutz-Jeghers type hamartomatous polyps are diagnosed with a lower risk...

Ab initio base fragment molecular orbital studies of influenza viral hemagglutinin HA1 full-domains in complex with sialoside receptors.

Journal of molecular and genetic medicine : an international journal of biomedical research

Sawada T, Hashimoto T, Tokiwa H, Suzuki T, Nakano H, Ishida H, Kiso M, Suzuki Y.
PMID: 19565017
J Mol Genet Med. 2008 Nov 26;3(1):133-42.

Mutations in avian influenza A viral hemagglutinin HA1 domain may alter the binding specificity of HA for alpha-sialosaccharide receptors, shifting the virus's host range from birds to humans. The amino acid mutations can occur at the sialoside binding site,...

Polymer-clad fused-silica optical fiber.

Applied optics

Suzuki Y, Kashiwagi H.
PMID: 20125910
Appl Opt. 1974 Jan 01;13(1):1-2. doi: 10.1364/AO.13.000001.

No abstract available.

Induced preference for axial chirality in a triarylmethylium o,o-dimer upon complexation with natural γ-cyclodextrin: strong ECD signaling and fixation of supramolecular chirality to molecular chirality.

Chemical communications (Cambridge, England)

Suzuki T, Tamaoki H, Wada K, Katoono R, Nehira T, Kawai H, Fujiwara K.
PMID: 22297725
Chem Commun (Camb). 2012 Mar 14;48(22):2812-4. doi: 10.1039/c2cc17475h. Epub 2012 Feb 02.

The ratio of the easily interconverting rotational isomers of biphenyl-2,2'-diylbis[bis(4-dimethylaminophenyl)methylium] (R)/(S)-1a(2+) can be biased to prefer an R configuration upon 1:1 complexation with γ-cyclodextrin in water. Through the reaction with Na(2)S, the preference of 1a(2+)@γ-CyD for an axial chirality...

Enantioselective 5-endo-dig carbocyclization of β-ketoesters with internal alkynes employing a four-component catalyst system.

Angewandte Chemie (International ed. in English)

Suzuki S, Tokunaga E, Reddy DS, Matsumoto T, Shiro M, Shibata N.
PMID: 22422729
Angew Chem Int Ed Engl. 2012 Apr 23;51(17):4131-5. doi: 10.1002/anie.201201060. Epub 2012 Mar 15.

No abstract available.

Reversible chain association/dissociation via a CO2 responsive crosslinking/decrosslinking system.

Chemical communications (Cambridge, England)

Nagai D, Suzuki A, Maki Y, Takeno H.
PMID: 21713262
Chem Commun (Camb). 2011 Aug 21;47(31):8856-8. doi: 10.1039/c1cc12084k. Epub 2011 Jun 28.

Reversible chain association/dissociation phenomenon via CO(2) responsive crosslinking/decrosslinking was detected in aqueous solutions of polyallylamine (PAA). The chain association/dissociation behavior was reversible and useful in the synthesis of porous crosslinked polystyrene, which suggested potential utility in the area of...

Stereoselective triplet-sensitised radical reactions of furanone derivatives.

Chemistry (Weinheim an der Bergstrasse, Germany)

Jahjah R, Gassama A, Bulach V, Suzuki C, Abe M, Hoffmann N, Martinez A, Nuzillard JM.
PMID: 20151440
Chemistry. 2010 Mar 15;16(11):3341-54. doi: 10.1002/chem.200903045.

The stereo- and regioselectivity of triplet-sensitised radical reactions of furanone derivatives have been investigated. Furanones 7a,b were excited to the (3)pipi* state by triplet energy transfer from acetone. Intramolecular hydrogen abstraction then occurred such that hydrogen was transferred from...

Comparison of postoperative complications after endoscopic submucosal dissection: differences of insufflations and anesthesias.

Diagnostic and therapeutic endoscopy

Mori H, Kobara H, Muramatsu A, Inoue H, Kobayashi M, Nomura T, Hagiike M, Izuishi K, Suzuki Y, Gong J, Masaki T.
PMID: 21785562
Diagn Ther Endosc. 2011;2011:709237. doi: 10.1155/2011/709237. Epub 2011 Jul 07.

Endoscopic submucosal dissection (ESD) has enabled the collective resection and increased the accuracy of pathological diagnosis. However, ESD requires a long operation time, which results in increased doses of analgesics/sedatives, and causes worsening of respiratory and hemodynamic statuses. To...

Observation of surface structure of 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide using high-resolution Rutherford backscattering spectroscopy.

The Journal of chemical physics

Nakajima K, Ohno A, Hashimoto H, Suzuki M, Kimura K.
PMID: 20687671
J Chem Phys. 2010 Jul 28;133(4):044702. doi: 10.1063/1.3465578.

The surface structures of 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C(n)MIM][TFSI], n=2,4,6) are studied by high-resolution Rutherford backscattering spectroscopy. The average composition of the surface molecular layer is very close to the stoichiometric composition, showing that neither ion is enriched in the surface...

Statistics of photoelectric pulses for Gaussian-Lorentzian light.

Applied optics

Sonoda H, Kikkawa A, Suzuki N.
PMID: 20197923
Appl Opt. 1978 Apr 01;17(7):1006-11. doi: 10.1364/AO.17.001006.

The practical treatment of statistics for Gaussian-Lorentzian light is studied theoretically and experimentally by using the time interval distribution of photoelectric pulses, which is derived in two approaches that are based on Markovian processes and the generating function of...

Showing 9985 to 9996 of 14511 entries