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  1. No Access

    Article

    Dielectric and piezoelectric properties of modified lead titanate zirconate ceramics from 4.2 to 300 K

    The dielectric and piezoelectric properties (d-p properties) of four kinds of doped lead titanate zirconate piezoelectric ceramics (PZTs) have been measured from 4.2 to 300 K. The d-p properties of the materia...

    X. L. Zhang, Z. X. Chen, L. E. Cross, W. A. Schulze in Journal of Materials Science (1983)

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    Chapter and Conference Paper

    Radiative Transfer at the Surface of a Small Scale Pool Fire Under the Influence of External Radiation

    Among the relevant environmental conditions which can influence fires, externally applied radiation appears to be important. In building and compartment fires, for example, these external radiations may be sup...

    X. L. Zhang, J. P. Vantelon in Heat Transfer in Radiating and Combusting Systems (1991)

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    Chapter

    The Roles of Anabaena Azollae in Anabaena-Azolla Association

    The roles of Anabaena in the symbiosis were studied by using Azolla strains with heterologous Anabaena azollae or without Anabaena. As a symbiont, Anabaena has a strong effect on the performances of Azolla either...

    Cang Lin, Y. D. Yang, X. L. Zhang, C. C. Liu in Nitrogen Fixation (1991)

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    Article

    A Pikaia-like chordate from the Lower Cambrian of China

    THE earliest evolution of the chordates and their relationships with other deuterostomes remains controversial1–3. Rejuvenation of interest in the areas of molecular phylogeny4 and developmental genetics5–7 has n...

    D.-G. Shu, S. Conway Morris, X.-L. Zhang in Nature (1996)

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    Article

    Effects of anisotropy in permeability on the two-phase flow and heat transfer in a porous cavity

     This paper reports on the results of a numerical study of convection flow and heat transfer in a rectangular porous cavity filled with a phase change material under steady state conditions. The two vertical w...

    X. L. Zhang, T. Hung Nguyen, R. Kahawita in Heat and Mass Transfer (1997)

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    Article

    Inhibition of interleukin-2 receptor (CD25) expression induced on T cells from children with acute lymphoblastic leukemia

     Peripheral blood lymphocytes obtained from children with acute lymphoblastic leukemia (ALL) at onset were studied for the expression of interleukin-2 (IL-2) receptor α-chain (CD25) by two-color flow-cytometri...

    X.-L. Zhang, Y. Komada, Yan-Wen Zhou, Tong-**n Chen in Cancer Immunology, Immunotherapy (1997)

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    Article

    β-Glucuronidase gene and green fluorescent protein gene expression in de-exined pollen of Nicotiana tabacum by microprojectile bombardment

     Gene constructs containing the β-glucuronidase (GUS) gene or green fluorescent protein (GFP) gene under the control of pollen-specific promoter Zm13-260 from maize were introduced by particle bombardment into de...

    J. Wang, H. Z. Shi, C. Zhou, H. Y. Yang, X. L. Zhang in Sexual Plant Reproduction (1998)

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    Article

    Stress corrosion studies of ion implanted austenitic steel

    Stress corrosion studies of 50 Mn18Cr4 austenitic steel implanted with 120 keV N+, 100 keV Cr+, 200keV and 400 keV Er+ ions were carried out by constant strain method in the nitrate solution. Surface composition ...

    X. L. Zhang, J. C. **, Z. **e, J. M. Li, P. D. Wang in Journal of Materials Science (1999)

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    Article

    A pipiscid-like fossil from the Lower Cambrian of south China

    Exceptional fossil preservation is critical to our understanding of early metazoan evolution. A key source of information is the Burgess Shale-type faunas1,2,3,4,5. Fossils from these deposits provide important i...

    D. Shu, S. Conway Morris, X-L. Zhang, L. Chen, Y. Li, J. Han in Nature (1999)

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    Article

    Thermal Decomposition Kinetics of the Zn(II) Complex with Norfloxacin in Static Air Atmosphere

    The thermal decomposition of Zn[NFA]2⋅5H2O (NFA=C16H18FN3O3, norfloxacin) and its kinetics were studied under non-isothermal conditions in air by TG-DTG and DTA methods. The intermediate and residue for each deco...

    J. J. Zhang, L. G. Ge, X. L. Zhang in Journal of Thermal Analysis and Calorimetry (1999)

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    Article

    Lower Cambrian vertebrates from south China

    The first fossil chordates are found in deposits from the Cambrian period (545–490 million years ago), but their earliest record is exceptionally sporadic and is often controversial. Accordingly, it has been d...

    D-G. Shu, H-L. Luo, S. Conway Morris, X-L. Zhang, S-X. Hu, L. Chen, J. Han in Nature (1999)

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    Article

    Effect of plant types on release of mineral potassium from gneiss

    The ability of plant types to release mineral K from little weathered gneiss for a mixture of particle size fractions of less than 10 mm, as well as for two separated size fractions (2 mm<D<5 mm, and 1 mm <D<2...

    J.G. Wang, F.S. Zhang, Y.P. Cao, X.L. Zhang in Nutrient Cycling in Agroecosystems (2000)

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    Article

    Release of potassium from K-bearing minerals: Effect of plant roots under P deficiency

    Pot experiments were conducted, with ryegrass (Lolium perenneL.) maize (Zea mays L ND60) and pak-choi (Brassica campestrisL. ssp.chinensis (L.) Mokina. var. cammunis Tsen et Lee, cv. Wuyueman), to investigate pla...

    J.G. Wang, F.S. Zhang, X.L. Zhang, Y.P. Cao in Nutrient Cycling in Agroecosystems (2000)

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    Article

    An Early Cambrian tunicate from China

    Like the Burgess Shales of Canada, the Chengjiang Lagerstätte from the Lower Cambrian of China is renowned for the detailed preservation as fossils of delicate, soft-bodied creatures1,2,3,4,5,6,7,8,9, providing a...

    D.-G. Shu, L. Chen, J. Han, X.-L. Zhang in Nature (2001)

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    Article

    Primitive deuterostomes from the Chengjiang Lagerstätte (Lower Cambrian, China)

    Cambrian fossil-Lagerstätten (sites of exceptional fossil preservation), such as those from Chengjiang (Lower Cambrian) and the Burgess Shale (Middle Cambrian), provide our best window into the Cambrian ‘explo...

    D.-G. Shu, S. Conway Morris, J. Han, L. Chen, X.-L. Zhang, Z.-F. Zhang, H.-Q. Liu in Nature (2001)

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    Article

    Head and backbone of the Early Cambrian vertebrate Haikouichthys

    Agnathan fish hold a key position in vertebrate evolution, especially regarding the origin of the head and neural-crest-derived tissue1. In contrast to amphioxus2, lampreys and other vertebrates possess a complex...

    D.-G. Shu, S. Conway Morris, J. Han, Z.-F. Zhang, K. Yasui, P. Janvier, L. Chen in Nature (2003)

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    Article

    Soyfood consumption and risk of glycosuria: a cross-sectional study within the Shanghai Women's Health Study

    Objective: To assess the association between soyfood intake and risk of glycosuria.

    G Yang, XO Shu, F **, T Elasy, H L Li, Q Li in European Journal of Clinical Nutrition (2004)

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    Article

    Repairing of goat Tibial Bone Defects with BMP-2 Gene–Modified Tissue-Engineered Bone

    Bone defects larger than a critical size are major challenges in orthopedic medicine. We combined tissue-engineered bone and gene therapy to provide osteoprogenitor cells, osteoinductive factors, and osteocond...

    K. R. Dai, X. L. Xu, T. T. Tang, Z. A .Zhu, C. F. Yu in Calcified Tissue International (2005)

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    Article

    Virtual photon effects on classical chaos in a periodically kicked Rydberg atom system

    We study classical chaos in the system of a two-level Rydberg atom interacting with a pulsed standing microwave. This model approaches the form of an atom optics realization of a usual delta-kicked rotor under...

    X. L. Zhang, C. H. Yuan, H. B. Huang, R. Ju in The European Physical Journal D - Atomic, … (2005)

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    Article

    BMP2Gene Therapy on the Repair of Bone Defects of Aged Rats

    Age-related decline in the number of mesenchymal stem cells (MSCs) and their reduced capability to differentiate osteogenically, along with diminished availability of growth factors, may be major factors accou...

    B. Yue, B. Lu, K. R. Dai, X. L. Zhang, C. F. Yu in Calcified Tissue International (2005)

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