Search Results - (Author, Cooperation:S. Dai)

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  1. 1
    Staff View
    Publication Date:
    2015-09-26
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2014-03-08
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Ma, L., Dai, S., Zhan, X., Liu, X., Li, Y.
    Royal Society
    Published 2018
    Staff View
    Publication Date:
    2018-08-23
    Publisher:
    Royal Society
    Electronic ISSN:
    2054-5703
    Topics:
    Natural Sciences in General
    Keywords:
    materials science, nanotechnology
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Jin, L. ; Dai, S. T. ; Dong, G. X. ; Li, C. M. ; Wang, S. L. ; Tian, J. H. ; Chen, D. Y.

    [S.l.] : American Institute of Physics (AIP)
    Published 1998
    Staff View
    ISSN:
    1089-7623
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Electrical Engineering, Measurement and Control Technology
    Notes:
    An apparatus, based on sputter-initiated resonant ionization spectroscopy and combined with time-of-flight mass spectroscopy, has been recently developed for microanalysis of mineral samples and other solid materials. This equipment has two kinds of ion gun, which make it possible to do more convenient and accurate microanalysis of complicated mineral samples. With this apparatus, detection and size measurement of fine gold grains trapped in pyrite at low concentrations have been carried out. The detection limit of this apparatus for gold is 73 ppb. The apparatus also has the function of secondary electron imaging. This gives very helpful information for geologists to evaluate the inborn state of gold in mineral samples and to improve the extraction rate of gold from minerals. © 1998 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  5. 5
    Dai, S. ; Morrish, A. H. ; Zhou, X. Z. ; Hu, B. P. ; Zhang, S. G.

    [S.l.] : American Institute of Physics (AIP)
    Published 1988
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Samples of Nd2(Fe1−xNix)14B, 0≤x≤0.20, with good phase homogeneity have been made by heating under vacuum for 300 h. 57Fe Mössbauer parameters have been determined for all six different iron crystallographic sites at room temperature. The nickel atoms preferentially substitute for iron atoms on the 16k2 and 8j2 sites. The nickel atoms seem to alter the hyperfine parameters of the 57Fe nuclei via localized interactions.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  6. 6
    Wang, H. H. ; Chen, F. ; Dai, S. Y. ; Zhao, T. ; Lu, H. B. ; Cui, D. F. ; Zhou, Y. L. ; Chen, Z. H. ; Yang, G. Z.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 2001
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Optically transparent Sb-doped SrTiO3 thin films with a transmittance higher than 95% in most of the visible region have been grown on SrTiO3 (001) substrate by pulsed laser deposition. The films behave as an n-type semiconductor between 10 K and room temperature. The carrier concentration and mobility of the films at room temperature are ∼5.8×1017 cm−3 and ∼6.4 cm2/V s, respectively. X-ray photoelectron spectroscopy measurement reveals that the delocalized electrons from the Sb dopants give rise to deep impurity levels within the band gap of the parent compound, which are responsible for the electrical conduction observed. The wide band gap and low density of states in the conduction band account for transparency of the films. © 2001 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  7. 7
    Wysocki, G. ; Dai, S. T. ; Brandstetter, T. ; Heitz, J. ; Bäuerle, D.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 2001
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We report experiments on laser-induced chemical etching of silicon in chlorine atmosphere using a near-field optical configuration. Crystalline (100) Si surfaces were locally illuminated in 300 mbar Cl2 through a tapered fiber tip. In most of the experiments, we used UV argon ion laser lines around 350 nm for illumination. The etched samples were analyzed by means of atomic force microscopy. Patterns with a width of 140 nm at full width half maximum and a vertical etch rate of the order of 15 nm/s have been achieved. Comparison of etching with a visible wavelength at intensities that cannot cause surface melting shows that the etching is primarily a photophysical process. © 2001 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  8. 8
    Hobom, M. ; Dai, S. ; Marais, E. ; Lacinova, L. ; Hofmann, F. ; Klugbauer, N.

    Oxford, UK : Blackwell Science Ltd
    Published 2000
    Staff View
    ISSN:
    1460-9568
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    The auxiliary calcium channel α2δ subunit comprises a family of three genes, α2δ-1 to 3, which are expressed in a tissue-specific manner. α2δ-2 mRNA is found in the heart, skeletal muscle, brain, kidney, liver and pancreas. We report here for the first time the identification and functional characterization of α2δ-2 splice variants and their mRNA distribution in the mouse brain. The splice variants differ in the α2 and δ protein by eight and three amino acid residues, respectively, and are differentially expressed in cardiac tissue and human medullary thyroid carcinoma (hMTC) cells. In situ hybridization of mouse brain sections revealed the highest expression of α2δ-2 mRNA in the Purkinje cell layer of the cerebellum, habenulae and septal nuclei, and a lower expression in the cerebral cortex, olfactory bulb, thalamic and hypothalamic nuclei, as well as the inferior and superior colliculus. As the in situ data did not suggest a specific colocalization with any α1 subunit, coexpression studies of α2δ-2 were carried out either with the high-voltage-gated calcium channels, α1C, α1E or α1A, or with the low-voltage-gated calcium channel, α1G. Coexpression of α2δ-2 increased the current density, shifted the voltage dependence of channel activation and inactivation of α1C, α1E and α1A subunits in a hyperpolarizing direction, and accelerated the decay and shifted the steady-state inactivation of the α1G current.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  9. 9
    Hui, S-C. G. ; Dai, S. ; Ogle, C. W.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1984
    Staff View
    ISSN:
    1440-1681
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    1. In chloralose anaesthetized rats, intravenous administration of captopril, SQ 20881, SA 446 or MK 421 (0.5 mg/kg) potentiated the depressor responses to arachidonic acid 3 mg/kg given intravenously.2. Same doses of the above angiotensin converting enzyme inhibitors caused an approximately 100-fold decrease in sensitivity to the pressor effects of angiotensin I, with a concomitant similar increase in sensitivity to the depressor effects of bradykinin.3. Depressor responses to arachidonic acid, both before and after administering the converting enzyme inhibitors, were abolished by intravenous indomethacin (5 mg/kg).4. These results suggest that increased synthesis of prostaglandins in the circulation may contribute to the hypotensive effect of the angiotensin converting enzyme inhibitors, a group of newly developed antihypertensive agents.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  10. 10
    Hui, S-C. G. ; Dai, S. ; Ogle, C. W.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1986
    Staff View
    ISSN:
    1440-1681
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    1. The mechanisms underlying potentiation by captopril of the depressor responses to arachidonic acid were studied in chloralose-anaesthetized rats.2. Captopril, in a dose (0.5 mg/kg, i.v.) which inhibited the pressor responses to angiotensin I (0.03-1 μg/kg, i.v.), enhanced the depressor responses to bradykinin (3-300 μg/kg, i.v.) and potentiated the hypotensive action of arachidonic acid (3 mg/kg, intravenously). This phenomenon was observed not only when captopril and arachidonic acid were administered intravenously, but also when these compounds were injected directly into the aortic arch.3. The enhancement of arachidonic acid-induced hypotension by captopril was not significantly affected by pretreatment with a low dose of aprotinin (3 mg/kg, i.v.), but was abolished by bilateral nephrectomy or by pretreatment with a higher dose of aprotinin (6 mg/kg, i.v.).4. It is suggested that captopril augments the depressor responses to arachidonic acid by inhibiting angiotensin converting enzyme. This results in accumulation of bradykinin which in turn increases release of vasodilator prostaglandins, originating most probably, from the kidneys. The possibility that blockade of angiotensin II formation by captopril may leave the vasodilator action of prostaglandin unopposed cannot be excluded.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  11. 11
    Tu, S.-T. ; Dai, S.-H.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1994
    Staff View
    ISSN:
    1460-2695
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes:
    Abstract— Knowledge of the behaviour of interacting and irregularly oriented multiple cracks is very limited. The recharacterisation rules for such cracks are usually empirical. In order to provide more reasonable rules for an engineering assessment of fatigue growth of irregularly oriented multiple cracks, this paper first studies the mechanics of fatigue growth of two-dimensional non-coplanar cracks. Uniaxial and biaxial fatigue testing on specimens with various multiple cracks are then carried out. Possible errors in the assessment of the cracks using the current rules are discussed. An improved procedure for the fatigue life assessment is developed.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  12. 12
    Yao, Y. ; Long, C. ; Li, Q. ; Li, G. ; Li, Y. ; Pan, Y. ; Gao, D. ; Dai, S.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-3115
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Energy, Environment Protection, Nuclear Power Engineering
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  13. 13
    Goldstein, M.J. ; Dai, S.-H.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  14. 14
    Ma, Z. ; Dai, S.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0009-2614
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  15. 15
    Staff View
    ISSN:
    0009-2614
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  16. 16
    Dai, S.-m. ; Gill, S.S.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0965-1748
    Keywords:
    Bacillus thuringiensis ; Midgut Culex ; Mosquitocidal toxin ; Processing ; Proteases
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  17. 17
    Dai, S.-T. ; Li, Z.-Y.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0375-9601
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  18. 18
    Yang, C.-Z. ; Dai, S.-T.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0375-9601
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  19. 19
    Chen, L.-q. ; Zhao, Z.-y. ; Dai, S.-y.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0167-2738
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  20. 20
    Dai, S.-T. ; Li, Z.-Y. ; Yang, C.-Z.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses