Physics and Astronomy

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  1. Research

    A C-band broadband ortho-mode transducer for radioastronomy polarimetry

    We describe the design, the construction and performance of a narrow band ortho-mode transducer, currently used in the 5 GHz polarimetric receiver of the Galactic Emission Mapping project.

    Ivan S. Ferreira, Camilo Tello, Miguel Bergano, Thyrso Villela, Domingos Barbosa and George F. Smoot

    SpringerPlus 2016 5:2069

    Published on: 2 December 2016

  2. Research

    Radiation dose reduction based on CNR index with low-tube voltage scan for pediatric CT scan: experimental study using anthropomorphic phantoms

    To figure out the relationship between image noise and contrast noise ratio (CNR) at different tube voltages, using anthropomorphic new-born and 1-year-old phantoms, and to discuss the feasibility of radiation...

    Takanori Masuda, Yoshinori Funama, Masao Kiguchi, Naoyuki Imada, Takayuki Oku, Tomoyasu Sato and Kazuo Awai

    SpringerPlus 2016 5:2064

    Published on: 1 December 2016

  3. Research

    Correlation between Al grain size, grain boundary grooves and local variations in oxide barrier thickness of Al/AlOx/Al tunnel junctions by transmission electron microscopy

    A thickness variation of only one Ångström makes a significant difference in the current through a tunnel junction due to the exponential thickness dependence of the current. It is thus important to achieve a...

    Samira Nik, Philip Krantz, Lunjie Zeng, Tine Greibe, Henrik Pettersson, Stefan Gustafsson, Per Delsing and Eva Olsson

    SpringerPlus 2016 5:1067

    Published on: 13 July 2016

  4. Research

    Electrohydrodynamic (EHD) drying of the Chinese wolfberry fruits

    The conventional methods of drying Chinese wolfberry fruits cause loss of active ingredients and the drying time is very long. In order to explore and investigate the new method of drying Chinese wolfberry fru...

    Maosheng Yang and Changjiang Ding

    SpringerPlus 2016 5:909

    Published on: 28 June 2016

  5. Research

    Changing the thickness of two layers: i-ZnO nanorods, p-Cu2O and its influence on the carriers transport mechanism of the p-Cu2O/i-ZnO nanorods/n-IGZO heterojunction

    In this study, two layers: i-ZnO nanorods and p-Cu2O were fabricated by electrochemical deposition. The fabricating process was the initial formation of ZnO nanorods layer on the n-IGZO thin film which was prepar...

    Nguyen Huu Ke, Le Thi Tuyet Trinh, Pham Kim Phung, Phan Thi Kieu Loan, Dao Anh Tuan, Nguyen Huu Truong, Cao Vinh Tran and Le Vu Tuan Hung

    SpringerPlus 2016 5:710

    Published on: 13 June 2016

  6. Research

    A high performance cost-effective digital complex correlator for an X-band polarimetry survey

    The detailed knowledge of the Milky Way radio emission is important to characterize galactic foregrounds masking extragalactic and cosmological signals. The update of the global sky models describing radio emi...

    Miguel Bergano, Armando Rocha, Luís Cupido, Domingos Barbosa, Thyrso Villela, José Vilas Boas, Graça Rocha and George F. Smoot

    SpringerPlus 2016 5:487

    Published on: 19 April 2016

  7. Research

    Field homogeneity improvement of maglev NdFeB magnetic rails from joints

    An ideal magnetic rail should provide a homogeneous magnetic field along the longitudinal direction to guarantee the reliable friction-free operation of high temperature superconducting (HTS) maglev vehicles. ...

    Y. J. Li, Q. Dai, C. Y. Deng, R. X. Sun, J. Zheng, Z. Chen, Y. Sun, H. Wang, Z. D. Yuan, C. Fang and Z. G. Deng

    SpringerPlus 2016 5:372

    Published on: 25 March 2016

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