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Molecular interpenetration within the columnar structure of crystalline anilino-beta-cyclodextrin.

Organic letters

Liu Y, You CC, Zhang M, Weng LH, Wada T, Inoue Y.
PMID: 10964359
Org Lett. 2000 Sep 07;2(18):2761-3. doi: 10.1021/ol000135+.

A single crystal of mono(6-anilino-6-deoxy)-beta-cyclodextrin was prepared, and its crystal structure was determined by X-ray crystallographic analysis, which clearly revealed that the anilino groups are consecutively included intermolecularly into the adjacent cyclodextrin cavities in the crystal, thus giving rise...

1/f alpha fluctuations in a ricepile model.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

Zhang SD.
PMID: 11031664
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 May;61(5):5983-6. doi: 10.1103/physreve.61.5983.

The temporal fluctuation of the average slope of a ricepile model is investigated. It is found that the power spectrum S(f) scales as 1/f alpha with alpha approximately 1.3 when grains of rice are added only to one end...

Nonequilibrium molecular dynamics simulations of heat flow in one-dimensional lattices.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

Zhang F, Isbister DJ, Evans DJ.
PMID: 11088130
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 Apr;61(4):3541-6. doi: 10.1103/physreve.61.3541.

We study the use of the Evans nonequilibrium molecular dynamics (NEMD) heat flow algorithm for the computation of the heat conductivity in one-dimensional lattices. For the well-known Fermi-Pasta-Ulam model, it is shown that when the heat field strength is...

How Capillary Electrophoresis Sequenced the Human Genome This Essay is based on a lecture given at the Analytica 2000 conference in Munich (Germany) on the occasion of the Heinrich-Emanuel-Merck Prize presentation. .

Angewandte Chemie (International ed. in English)

Dovichi NJ, Zhang J.
PMID: 11169637
Angew Chem Int Ed Engl. 2000 Dec 15;39(24):4463-4468. doi: 10.1002/1521-3773(20001215)39:24<4463::aid-anie4463>;2-8.

No abstract available.

From Cubane to Supercubane: The Design, Synthesis, and Structure of a Three-Dimensional Open Framework Based on a Ln(4)O(4) Cluster This work was supported by the National Natural Science Foundation of China (No. 29771001, 29831010), National Key Project for Fundamental Research (G1998061306), and the Excellent Young Teachers Fund of MOE, P.R. China.

Angewandte Chemie (International ed. in English)

Ma BQ, Zhang DS, Gao S, Jin TZ, Yan CH, Xu GX.
PMID: 11091425
Angew Chem Int Ed Engl. 2000 Oct 16;39(20):3644-3646. doi: 10.1002/1521-3773(20001016)39:20<3644::aid-anie3644>;2-1.

No abstract available.

Assessing the contribution of natural sources to regional atmospheric mercury budgets.

The Science of the total environment

Gustin MS, Lindberg SE, Austin K, Coolbaugh M, Vette A, Zhang H.
PMID: 11032136
Sci Total Environ. 2000 Oct 02;259(1):61-71. doi: 10.1016/s0048-9697(00)00556-8.

Naturally mercury-enriched substrate is a long-lived source of mercury to the global atmospheric mercury cycle. Field flux chambers, laboratory gas exchange chambers and micrometeorological methods may be applied to estimate emissions from these sources. However, field chamber experimental design...

Orbitally degenerate spin-1 model for insulating V2O3.

Physical review letters

Mila F, Shiina R, Zhang F, Joshi A, Ma M, Anisimov V, Rice TM.
PMID: 10970596
Phys Rev Lett. 2000 Aug 21;85(8):1714-7. doi: 10.1103/PhysRevLett.85.1714.

Motivated by recent neutron, x-ray absorption, and resonant scattering experiments, we revisit the electronic structure of V2O3. We propose a model in which S = 1 V3+ ions are coupled in the vertical V-V pairs forming twofold orbitally degenerate...

Effect of defects on the elastic properties of Wustite.

Physical review letters

Zhang J.
PMID: 11015950
Phys Rev Lett. 2000 Jan 17;84(3):507-10. doi: 10.1103/PhysRevLett.84.507.

Wustite (FexO) has been studied under static high pressure in the composition range x = 0.95-0.99. Fe0.99O is substantially less compressible than FexO with x

Nonradiative electron-hole recombination by a low-barrier pathway in hydrogenated silicon semiconductors.

Physical review letters

Zhang SB, Branz HM.
PMID: 11017417
Phys Rev Lett. 2000 Jan 31;84(5):967-70. doi: 10.1103/PhysRevLett.84.967.

A microscopic pathway for nonradiative electron-hole recombination by large structural reconfiguration in hydrogenated Si is found with first-principles calculations. Trapped-biexciton formation leads to a low-barrier reconfiguration of the H atom, accompanied by crossing of doubly occupied electron and hole...

Transition from amplified spontaneous emission to laser action in strongly scattering media.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

Cao H, Xu JY, Chang S, Ho ST.
PMID: 11046486
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 Feb;61(2):1985-9. doi: 10.1103/physreve.61.1985.

In an active random medium, the combination of multiple scattering with light amplification may lead to random laser action. However, it is crucial but sometimes difficult to distinguish between amplified spontaneous emission and lasing. By varying the amount of...

The distribution and copy number of copia-like retrotransposons in rice (Oryza sativa L.) and their implications in the organization and evolution of the rice genome.

Proceedings of the National Academy of Sciences of the United States of America

Wang S, Liu N, Peng K, Zhang Q.
PMID: 10359797
Proc Natl Acad Sci U S A. 1999 Jun 08;96(12):6824-8. doi: 10.1073/pnas.96.12.6824.

We used 22 fragments corresponding to the reverse transcriptase domain of copia-like retrotransposons as representatives to study the organization and distribution of these elements in the rice genome. The loci detected by these 22 fragments were assigned to 47...

Interrelation of superconducting and antiferromagnetic gaps in high- T(c) compounds: A test case for the SO(5) theory.

Physical review letters

Zacher MG, Hanke W, Arrigoni E, Zhang SC.
PMID: 10991408
Phys Rev Lett. 2000 Jul 24;85(4):824-7. doi: 10.1103/PhysRevLett.85.824.

Recent angle resolved photoemission data, which found evidence for a d-wave-like modulation of the antiferromagnetic gap, suggest an intimate interrelation between the antiferromagnetic insulator and the superconductor with its d-wave gap. It is shown here that a projected SO(5)...

Showing 1 to 12 of 171845 entries