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  • Walter de Gruyter GmbH  (6)
  • 1
    Online Resource
    Online Resource
    Polarization-dependent phase-modulation metasurface for vortex beam (de)multiplexing
    Walter de Gruyter GmbH ; 2023
    In:  Nanophotonics Vol. 12, No. 6 ( 2023-03-14), p. 1129-1135
    Details
    In: Nanophotonics, Walter de Gruyter GmbH, Vol. 12, No. 6 ( 2023-03-14), p. 1129-1135
    Abstract: Vortex beams (VBs) carrying orbital angular momentum (OAM) have shown promising potential in enhancing communication capacity through the possession of multiple multiplexing dimensions involving the OAM mode, polarization, and wavelength. Although many research works on multidimensional multiplexing have been conducted, the (de)multiplexer compatible with these dimensions remains elusive. Following the expanded concept of the Pancharatnam–Berry (PB) phase, we designed a polarization-dependent phase-modulation metasurface to phase-modulate the two orthogonal linearly polarized components of light, and two Dammann vortex gratings with orthogonal polarization responses were loaded to simultaneously (de)multiplex OAM mode and polarization channels. As a proof of concept, we constructed a 16-channel multidimensional multiplexing communication system (including two OAM modes, two polarization states, and four wavelengths), and 400 Gbit/s quadrature-phase shift-keying (QPSK) signals were transmitted. The results demonstrate that the OAM mode and polarization channels are successfully (de)multiplexed, and the bit-error-rates (BERs) are below 1.67 × 10 −6 at the received power of −15 dBm.
    Type of Medium: Online Resource
    ISSN: 2192-8614
    URL: Article
    DOI: 10.1515/nanoph-2022-0710
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2023
    detail.hit.zdb_id: 2674162-3
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  • 2
    Online Resource
    Online Resource
    Characterization of the subcellular localization and nuclear import molecular mechanisms of herpes simplex virus 1 UL2
    Walter de Gruyter GmbH ; 2017
    In:  Biological Chemistry Vol. 398, No. 4 ( 2017-4-1), p. 509-517
    Details
    In: Biological Chemistry, Walter de Gruyter GmbH, Vol. 398, No. 4 ( 2017-4-1), p. 509-517
    Abstract: As a crucial protein, the herpes simplex virus 1 (HSV-1) UL2 protein has been shown to take part in various stages of viral infection, nonetheless, its exact subcellular localization and transport molecular determinants are not well known thus far. In the present study, by using live cells fluorescent microscopy assay, UL2 tagged with enhanced yellow fluorescent protein was transiently expressed in live cells and showed a completely nuclear accumulation without the presence of other HSV-1 proteins. Moreover, the nuclear transport of UL2 was characterized to be assisted by multiple transport pathways through Ran-, importin α1-, α5-, α7-, β1- and transportin-1 cellular transport receptors. Consequently, these results will improve understanding of UL2-mediated biological functions in HSV-1 infection cycles.
    Type of Medium: Online Resource
    ISSN: 1437-4315 , 1431-6730
    URL: Article
    DOI: 10.1515/hsz-2016-0268
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2017
    detail.hit.zdb_id: 1466062-3
    SSG: 12
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    Online Resource
  • 3
    Online Resource
    Online Resource
    The influence of laccase/histidine system on the properties of OCC pulp fibers, and of handsheets made thereof
    Walter de Gruyter GmbH ; 2019
    In:  Nordic Pulp & Paper Research Journal Vol. 34, No. 2 ( 2019-05-26), p. 211-217
    Details
    In: Nordic Pulp & Paper Research Journal, Walter de Gruyter GmbH, Vol. 34, No. 2 ( 2019-05-26), p. 211-217
    Abstract: For improving the physical properties of old corrugated container (OCC) fiber, the laccase/histidine system was used in this paper. Firstly, the paper studied the optimum conditions that the laccase/histidine system modified the OCC fiber, including enzyme dosage, histidine dosage, reaction time, reaction temperature, and pH. Experimental results showed that the optimum reaction conditions of laccase/histidine system for OCC pulp were: dose of enzyme 1 U· g − 1 {\text{g}^{-1}} , 4 h reaction time, pH 4.5, dose of histidine 1 %. Under the optimum reaction conditions, the tensile and burst indexes of the sheet made from laccase/histidine treatment were increased by 25.2 % and 34.0 %, compared with that of the control sample. The SEM results showed that compared with the control sample, the fibrillation of the fiber modified with laccase/histidine was more obvious. Finally, the content of acid-insoluble lignin of the fiber was determined. The content of acid-insoluble lignin of the control sample was 29.2 %, and the content of acid-insoluble lignin of the fiber treated by laccase/histidine system in optimum reaction conditions was 16.0 %, which decreased by 13.2 %. Laccase/histidine system could improve the physical properties of recycled fiber, alleviate fiber decay, which are of great significance to solve the resource shortage and environment pollution of the paper-making industry.
    Type of Medium: Online Resource
    ISSN: 2000-0669 , 0283-2631
    URL: Article
    DOI: 10.1515/npprj-2018-0079
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2019
    detail.hit.zdb_id: 2479176-3
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  • 4
    Online Resource
    Online Resource
    Effects of wet-pressing induced fiber hornification on hydrogen bonds of cellulose and on properties of eucalyptus paper sheets
    Walter de Gruyter GmbH ; 2018
    In:  Holzforschung Vol. 72, No. 10 ( 2018-10-25), p. 829-837
    Details
    In: Holzforschung, Walter de Gruyter GmbH, Vol. 72, No. 10 ( 2018-10-25), p. 829-837
    Abstract: The supramolecular structure of eucalyptus pulp cellulose was studied by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and water retention value (WRV) after subjecting the pulp to pressures of 0.1, 0.2, 0.3, 0.4 and 0.5 MPa. It was interpreted from the FTIR spectra of the sheets after pressing that the amount of intermolecular hydrogen bonds (HB inter ) first increased and then decreased as a function of increasing pressure, while the number of the intramolecular hydrogen bonding (HB intra ) exhibited an opposite trend. In the pressed fibers, the number of HB intra O(6)H· · ·O(3′) increased by 16% compared to the un-pressed fibers, while the number of HB inter O(2)H· · ·O(6) and O(3)H· · ·O(5) decreased by 23% at 0.3 MPa. XRD analysis showed that the crystallite size corresponding to the diffraction peaks for (002) lattice planes and the crystallinity of eucalyptus fibers were the lowest at a pressure of 0.3 MPa. Pressing produced an irreversible reduction of fiber pore volume, which was manifested by reduced WRV data.
    Type of Medium: Online Resource
    ISSN: 1437-434X , 0018-3830
    URL: Article
    DOI: 10.1515/hf-2017-0214
    Language: Unknown
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2018
    detail.hit.zdb_id: 1466072-6
    SSG: 23
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    Online Resource
  • 5
    Online Resource
    Online Resource
    Fiber structures and properties of eucalyptus kraft pulp via different bleaching methods
    Walter de Gruyter GmbH ; 2019
    In:  Nordic Pulp & Paper Research Journal Vol. 34, No. 3 ( 2019-09-25), p. 280-288
    Details
    In: Nordic Pulp & Paper Research Journal, Walter de Gruyter GmbH, Vol. 34, No. 3 ( 2019-09-25), p. 280-288
    Abstract: The fiber morphology, the content of hydrogen bonds (HBs) of different models, cellulose crystalline structure, water retention value (WRV), and strength properties of eucalyptus pulp bleached by different bleaching methods (hydrogen peroxide bleaching and sodium dithionite bleaching) were investigated. The results of fourier transform infrared spectrometer (FTIR) showed that the content of intramolecular hydrogen bonds (HB intra ) increased by 11.6 % and 4.8 % after hydrogen peroxide bleaching and sodium dithionite bleaching, respectively. The energy of the hydrogen bonds was changed after bleaching treatment. The hydrogen bonding distances showed a small change after different bleaching treatment. The results of X-ray diffraction (XRD) demonstrated a decrease in the average width of crystallite size in the (002) lattice plane after different bleaching treatment, which was the same trend with the variability of cellulose crystallinity. Compared with the unbleached pulp, the WRV and strength properties of the bleached pulp increased after each bleaching process. Tear index of handsheets made from the hydrogen peroxide and sodium dithionite bleaching pulps were 46.0 % and 54.8 %, respectively. The sodium dithionite bleaching treatment had more significant effects on fiber swelling capability.
    Type of Medium: Online Resource
    ISSN: 2000-0669 , 0283-2631
    URL: Article
    DOI: 10.1515/npprj-2019-0030
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2019
    detail.hit.zdb_id: 2479176-3
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  • 6
    Online Resource
    Online Resource
    The Analysis of Parametric Sensitivity Based on Designing and Optimization of a New Microwave Heating System
    Walter de Gruyter GmbH ; 2017
    In:  High Temperature Materials and Processes Vol. 36, No. 8 ( 2017-09-26), p. 847-853
    Details
    In: High Temperature Materials and Processes, Walter de Gruyter GmbH, Vol. 36, No. 8 ( 2017-09-26), p. 847-853
    Abstract: Microwave-assisted heating technology has become a popular alternative to conventional heating technologies because of its many advantages. However, the matching performance of microwave heating system is of particular concern because it provides an important index of the utilization efficiency of microwave energy. In this work, a new microwave heating system is designed by the theory of optical resonator in first. Then the comprehensive analysis of the mutual coupling of high sensitive geometrical and material parameters were investigated based on this new microwave heating system at 2.45 GHz. It is demonstrated that the thickness of materials dramatically influences microwave energy absorption efficiency and should be carefully considered and perhaps given priority. Moreover, it is shown that matching performance is the best when the titanium concentrates thickness at about 0.075 m.
    Type of Medium: Online Resource
    ISSN: 0334-6455 , 2191-0324
    URL: Article
    DOI: 10.1515/htmp-2016-0034
    Language: Unknown
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2017
    detail.hit.zdb_id: 2602423-8
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