Search Results - (Author, Cooperation:X. Feng)
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1Djordjevic, Z. V. ; Li, X. Feng ; Shin, Won Soo ; Wunder, S. L. ; Baran, G. R.
Springer
Published 1995Staff ViewISSN: 1573-4803Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract The branching patterns formed as a result of crack growth in dimethacrylate resins below their glass transition temperatures looked similar to fractal trees. The skeletons of the patterns were analysed numerically for their topological and geometrical properties. The number of branches, N i , mean branch lengths, N i , and branch angles of a particular order, defined according to the Strahler and inverted Weibel schemes, followed exponential scaling behaviour: N i ∼ (R b )−i and L i ∼ (R l ) i . Using the relationship for the fractal dimension D=In R B /In R L , a value of D=1.4 was obtained for the fracture pattern. Fractal behaviour was also examined by the box-counting method which indicated a power-law dependence of the mass on the box size with fractal dimension exponent D=1.4 in the case of the fracture pattern. However, the mass-shell method for both the fracture pattern and the fractal trees gave an exponential increase of mass with distance from the origin, rather than the power-law behaviour expected for fractals. This was attributed to the fact that branches of different sizes were distributed in restricted regions of space closer to the periphery, rather than uniformly over the whole pattern.Type of Medium: Electronic ResourceURL: -
2Staff View
Publication Date: 2018-02-22Publisher: Royal SocietyElectronic ISSN: 2054-5703Topics: Natural Sciences in GeneralKeywords: biophysics, computational biologyPublished by: -
3Fu, W., Liu, X., Lin, X., Feng, H., Sun, L., Li, S., Chen, H., Tang, H., Lu, L., Jin, W., Dong, C.
Rockefeller University Press
Published 2018Staff ViewPublication Date: 2018-03-06Publisher: Rockefeller University PressPrint ISSN: 0022-1007Electronic ISSN: 1540-9538Topics: MedicineKeywords: Autoimmunity, Infectious Disease and Host DefensePublished by: -
4Lu, W., Chen, X., Feng, J., Bao, Y.-J., Wang, Y., Wu, Q., Zhu, D.
The American Society for Microbiology (ASM)
Published 2018Staff ViewPublication Date: 2018-06-19Publisher: The American Society for Microbiology (ASM)Print ISSN: 0099-2240Electronic ISSN: 1098-5336Topics: BiologyPublished by: -
5Lu, X., Jin, E.-J., Cheng, X., Feng, S., Shang, X., Deng, P., Jiang, S., Chang, Q., Rahmy, S., Chaudhary, S., Lu, X., Zhao, R., Wang, Y. A., De; Pinho, R. A.
Cold Spring Harbor Laboratory Press
Published 2018Staff ViewPublication Date: 2018-01-20Publisher: Cold Spring Harbor Laboratory PressPrint ISSN: 0890-9369Topics: BiologyPublished by: -
6Z. Q. Liu; J. H. Liu; M. D. Biegalski; J.-M. Hu; S. L. Shang; Y. Ji; J. M. Wang; S. L. Hsu; A. T. Wong; M. J. Cordill; B. Gludovatz; C. Marker; H. Yan; Z. X. Feng; L. You; M. W. Lin; T. Z. Ward; Z. K. Liu; C. B. Jiang; L. Q. Chen; R. O. Ritchie; H. M. Christen; R. Ramesh
Nature Publishing Group (NPG)
Published 2018Staff ViewPublication Date: 2018-01-04Publisher: Nature Publishing Group (NPG)Electronic ISSN: 2041-1723Topics: BiologyChemistry and PharmacologyNatural Sciences in GeneralPhysicsPublished by: -
7Staff View
Publication Date: 2018-08-17Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Botany, Ecology, Online OnlyPublished by: -
8P. Ruffieux ; S. Wang ; B. Yang ; C. Sanchez-Sanchez ; J. Liu ; T. Dienel ; L. Talirz ; P. Shinde ; C. A. Pignedoli ; D. Passerone ; T. Dumslaff ; X. Feng ; K. Mullen ; R. Fasel
Nature Publishing Group (NPG)
Published 2016Staff ViewPublication Date: 2016-03-25Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
9Tong, X., Feng, Y., Li, J. J.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-02-09Publisher: American Association for the Advancement of Science (AAAS)Electronic ISSN: 2375-2548Topics: Natural Sciences in GeneralPublished by: -
10Yao, Y., Liu, M., Zang, F., Yue, M., Xia, X., Feng, Y., Fan, H., Zhang, Y., Huang, P., Yu, R.
BMJ Publishing
Published 2018Staff ViewPublication Date: 2018-04-14Publisher: BMJ PublishingElectronic ISSN: 2044-6055Topics: MedicineKeywords: Open access, EpidemiologyPublished by: -
11Staff View
Publication Date: 2018-10-12Publisher: Institute of Physics (IOP)Print ISSN: 1755-1307Electronic ISSN: 1755-1315Topics: GeographyGeosciencesPhysicsPublished by: -
12Staff View
Publication Date: 2018-12-20Publisher: Institute of Physics (IOP)Print ISSN: 1755-1307Electronic ISSN: 1755-1315Topics: GeographyGeosciencesPhysicsPublished by: -
13C. A. Ibarra ; X. Feng ; V. K. Schoft ; T. F. Hsieh ; R. Uzawa ; J. A. Rodrigues ; A. Zemach ; N. Chumak ; A. Machlicova ; T. Nishimura ; D. Rojas ; R. L. Fischer ; H. Tamaru ; D. Zilberman
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-09-18Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Arabidopsis/cytology/*genetics ; Arabidopsis Proteins/genetics/metabolism ; *DNA Methylation ; DNA Transposable Elements/*genetics ; DNA, Plant/metabolism ; Endosperm/cytology/genetics ; *Gene Expression Regulation, Plant ; *Gene Silencing ; Germ Cells, Plant/*metabolism ; N-Glycosyl Hydrolases/genetics/metabolism ; RNA, Plant/metabolism ; Trans-Activators/genetics/metabolismPublished by: -
14C. Z. Chang ; J. Zhang ; X. Feng ; J. Shen ; Z. Zhang ; M. Guo ; K. Li ; Y. Ou ; P. Wei ; L. L. Wang ; Z. Q. Ji ; Y. Feng ; S. Ji ; X. Chen ; J. Jia ; X. Dai ; Z. Fang ; S. C. Zhang ; K. He ; Y. Wang ; L. Lu ; X. C. Ma ; Q. K. Xue
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-03-16Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
15J. Zhang ; C. Z. Chang ; P. Tang ; Z. Zhang ; X. Feng ; K. Li ; L. L. Wang ; X. Chen ; C. Liu ; W. Duan ; K. He ; Q. K. Xue ; X. Ma ; Y. Wang
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-03-30Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
16Staff View
Publication Date: 2015-07-04Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
17S. Kawai ; A. Benassi ; E. Gnecco ; H. Sode ; R. Pawlak ; X. Feng ; K. Mullen ; D. Passerone ; C. A. Pignedoli ; P. Ruffieux ; R. Fasel ; E. Meyer
American Association for the Advancement of Science (AAAS)
Published 2016Staff ViewPublication Date: 2016-02-27Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
18Staff View
Publication Date: 2018-10-12Publisher: Institute of Physics (IOP)Print ISSN: 1755-1307Electronic ISSN: 1755-1315Topics: GeographyGeosciencesPhysicsPublished by: -
19Jiang, D. T. ; Coulthard, I. ; Sham, T. K. ; Lorimer, J. W. ; Frigo, S. P. ; Feng, X. H. ; Rosenberg, R. A.
[S.l.] : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Using the x-ray excited optical luminescence technique, we have investigated the soft x-ray induced photoluminescence of porous silicon in the optical region (200–900 nm) and the Si K-edge x-ray absorption fine structures of porous silicon in the near edge region. It is found that while porous silicon prepared at low current density (20 mA/cm2 for 20 min) exhibits a single broad luminescence band, porous silicon prepared at high current density (200 mA/cm2 for 20 min) exhibits three optical luminescence channels; i.e., in addition to the broad peak characteristic of all porous silicon, there are at least two additional optical luminescence channels at shorter wavelengths, one with modest intensity at ∼460 nm and the other a weak and very broad peak at ∼350 nm. These optical channels have been used to monitor the Si K-edge absorption of porous silicon in the near edge structure region. Analysis of the data shows that while the band at ∼627.5 nm corresponds to the bulk emission, the other channels are of a surface origin. These observations and their implications are discussed.Type of Medium: Electronic ResourceURL: -
20Staff View
ISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Cathodoluminescence of surface-charged Ce:YAG crystals was carried out. It was found that the familiar YAG defect emission band at 300 nm had a stronger dependence on the incident electron beam energy and accumulated surface charge than the cerium emission band at 550 nm. Luminescent relaxations, observed upon charging and discharging, appear to be due to charge migrations within the active region of crystal bulk. The experimental results are consistent with the association of the defect luminescent center with electrons trapped at oxygen vacancies.Type of Medium: Electronic ResourceURL: