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Showing 25 to 36 of 1165 entries
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Synthesis of 13C-labelled, bicyclic mimetics of natural enediynes.

Chemical communications (Cambridge, England)

Das P, Mita T, Lear MJ, Hirama M.
PMID: 12510268
Chem Commun (Camb). 2002 Nov 21;(22):2624-5. doi: 10.1039/b208939d.

Using a versatile synthesis with 13CH3PPh3I and CH(3)13CO2Et as 13C sources, the first examples of nine-membered chromophores which have been differentially labelled with 13C in their carbocyclic enediyne cores are described.

Architecture of crystal structures from square planes.

Acta crystallographica. Section B, Structural science

Hauck J, Mika K.
PMID: 11006550
Acta Crystallogr B. 2000 Oct;56:750-65. doi: 10.1107/S0108768100006480. Epub 2000 Oct 01.

The crystal structures of ordered b.c.c. (body-centered cubic), f.c. c. (face-centered cubic) or primitive cubic alloys AxBy and related NaCl, ZnS or CaF(2) derivative structures are characterized by the self-coordination numbers T(1), T(2) of the A atoms with A...

Putting nanocrystals to work: from solutions to devices.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Kershaw SV, Harrison MT, Burt MG.
PMID: 12639387
Philos Trans A Math Phys Eng Sci. 2003 Feb 15;361(1803):331-40; discussion 340-3. doi: 10.1098/rsta.2002.1131.

The colloidal route to semiconductor nanocrystals is extremely flexible, with a high degree of control over size, size distribution, surface passivation and internal structure of the nanoparticles. Simple chemically controlled techniques can be used to assemble these particles into...

Coordination metallacycles of an achiral dendron self-assemble via metal-metal interaction to form luminescent superhelical fibers.

Journal of the American Chemical Society

Enomoto M, Kishimura A, Aida T.
PMID: 11389657
J Am Chem Soc. 2001 Jun 13;123(23):5608-9. doi: 10.1021/ja010426t.

No abstract available.

Supramolecular acid/base catalysis via multiple hydrogen bonding interaction.

Chemical communications (Cambridge, England)

Ohsaki K, Konishi K, Aida T.
PMID: 12196952
Chem Commun (Camb). 2002 Aug 21;(16):1690-1. doi: 10.1039/b202970g.

2-Ureidoisocytosine bearing a phosphonium ion functionality self-assembles in an anti-parallel manner, to exhibit a cooperative acid/base catalysis for the ring-opening reaction of an epoxide.

Achievement of a 920-MHz high resolution NMR.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Hashi K, Shimizu T, Goto A, Kiyoshi T, Matsumoto S, Wada H, Fujito T, Hasegawa K, Yoshikawa M, Miki T, Ito S, Hamada M, Hayashi S.
PMID: 12165269
J Magn Reson. 2002 Jun;156(2):318-21. doi: 10.1006/jmre.2002.2559.

We have developed a 920-MHz NMR system and performed the proton NMR measurement of H(2)O and ethylbenzene using the superconducting magnet operating at 21.6 T (920 MHz for proton), which is the highest field produced by a superconducting NMR...

Template synthesis of polypyrrole nanofibers insulated within one-dimensional silicate channels: hexagonal versus lamellar for recombination of polarons into bipolarons.

Angewandte Chemie (International ed. in English)

Ikegame M, Tajima K, Aida T.
PMID: 12761746
Angew Chem Int Ed Engl. 2003 May 16;42(19):2154-7. doi: 10.1002/anie.200250800.

No abstract available.

Investigation of the morphology-catalytic reactivity relationship for Pt nanoparticles supported on alumina by using the reduction of NO with CH4 as a model reaction.

Chemical communications (Cambridge, England)

Balint I, Miyazaki A, Aika K.
PMID: 12122656
Chem Commun (Camb). 2002 May 21;(10):1044-5. doi: 10.1039/b202421g.

The morphological evolution of large Pt nanoparticles supported on alumina in reaction conditions has a significant impact on the catalytic behaviour for the NO/CH4 reaction.

Novel features of DNA-dependent RNA polymerase from protozoan Tetrahymena pyriformis.

FEBS letters

Higashinakagawa T, Mita T.
PMID: 11946724
FEBS Lett. 1972 Sep 01;25(1):73-76. doi: 10.1016/0014-5793(72)80457-5.

No abstract available.

[Perspectives of the aging science in the 21st century].

Nihon Ronen Igakkai zasshi. Japanese journal of geriatrics

Kita T, Nabeshima Y, Ouchi Y, Nakamura S, Miki T.
PMID: 11218718
Nihon Ronen Igakkai Zasshi. 2001 Jan;38(1):11-21.

No abstract available.

Reparametrization-covariant theory for on-line learning of probability distributions.

Physical review. E, Statistical, nonlinear, and soft matter physics

Aida T.
PMID: 11736035
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Nov;64(5):056128. doi: 10.1103/PhysRevE.64.056128. Epub 2001 Oct 30.

We discuss the on-line learning of probability distributions in a reparametrization covariant formulation. Reparametrization covariance plays an essential role not only to respect an intrinsic property of "information" but also for pattern recognition problems. We can obtain an optimal...

Self-assembled hexa-peri-hexabenzocoronene graphitic nanotube.

Science (New York, N.Y.)

Hill JP, Jin W, Kosaka A, Fukushima T, Ichihara H, Shimomura T, Ito K, Hashizume T, Ishii N, Aida T.
PMID: 15178796
Science. 2004 Jun 04;304(5676):1481-3. doi: 10.1126/science.1097789.

An amphiphilic hexa-peri-hexabenzocoronene self-assembles to form a pi-electronic, discrete nanotubular object. The object is characterized by an aspect ratio greater than 1000 and has a uniform, 14-nanometer-wide, open-ended hollow space, which is an order of magnitude larger than those...

Showing 25 to 36 of 1165 entries