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  1. Article ; Online: Self-Healing Properties of Water Tree Damage in Multilayered Shell–Core-Structured Microcapsules/Cross-Linked Polyethylene Composites

    Bo Zhu / Hao Sun / Yaqi Zhu / Shengkun He / Ximu Han

    Polymers, Vol 16, Iss 1, p

    2024  Volume 155

    Abstract: To investigate the effect of the structure of microcapsules on the properties of cross-linked polyethylene (XLPE) composites, three XLPE specimens filled with multilayered shell–core-structured microcapsules are designed. In this paper, the microcapsules ...

    Abstract To investigate the effect of the structure of microcapsules on the properties of cross-linked polyethylene (XLPE) composites, three XLPE specimens filled with multilayered shell–core-structured microcapsules are designed. In this paper, the microcapsules are first analyzed morphologically and chemically. In addition, the effect of the microcapsule structure on the typical electrical properties of the composites is explored. Finally, the self-healing ability of XLPE specimens filled with microcapsules is verified. The results show that the SiO 2 on the surface of the trilayer shell–core microcapsules can make the microcapsules and the XLPE matrix have a better mechanical interlocking ability, which makes the typical properties of the trilayer shell–core microcapsules slightly better than those of the bilayer shell–core microcapsules. Moreover, when the bilayer shell–core or trilayer shell–core microcapsules rupture under the action of an electric field, the repair material reacts with the water tree under capillary action to consume the residual water while generating organic matter to fill in the cavity, thus repairing the damaged area of the water tree and ultimately achieving the self-healing of the composite water tree.
    Keywords multifunctional composites ; nanoparticles ; electrical properties ; microstructures ; Organic chemistry ; QD241-441
    Subject code 620
    Language English
    Publishing date 2024-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Single-cell transcriptome landscape and antigen receptor dynamic during SARS-CoV-2 vaccination

    Xiaojian Cao / Xiaohua Chen / Yaqi Zhu / Xiaojuan Gou / Keyi Yan / Bing Yang / Dong Men / Lei Liu / Yong-an Zhang / Gang Cao

    Genes and Diseases, Vol 10, Iss 4, Pp 1675-

    2023  Volume 1686

    Abstract: Vaccination by inactivated vaccine is an effective strategy to prevent the COVID-19 pandemic. However, the detailed molecular immune response at single-cell level is poorly understood. In this study, we systematically delineated the landscape of the pre- ...

    Abstract Vaccination by inactivated vaccine is an effective strategy to prevent the COVID-19 pandemic. However, the detailed molecular immune response at single-cell level is poorly understood. In this study, we systematically delineated the landscape of the pre- and post-vaccination single-cell transcriptome, TCR (T cell antigen receptor) and BCR (B cell antigen receptor) expression profile of vaccinated candidates. The bulk TCR sequencing analysis of COVID-19 patients was also performed. Enrichment of a clonal CD8+ T cell cluster expressing specific TCR was identified in both vaccination candidates and COVID-19 patients. These clonal CD8+ T cells showed high expression of cytotoxicity, phagosome and antigen presentation related genes. The cell–cell interaction analysis revealed that monocytes and dendritic cells could interact with these cells and initiate phagocytosis via ICAM1-ITGAM and ITGB2 signaling. Together, our study systematically deciphered the detailed immunological response during SARS-CoV-2 vaccination and infection. It may facilitate understanding the immune response and the T-cell therapy against COVID-19.
    Keywords COVID-19 ; SARS-CoV-2 ; Single-cell sequencing ; TCR sequencing ; Vaccination ; Medicine (General) ; R5-920 ; Genetics ; QH426-470
    Subject code 570
    Language English
    Publishing date 2023-07-01T00:00:00Z
    Publisher KeAi Communications Co., Ltd.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Coupled Effects of Reduced Chemical Fertilization and Biochar Supplementation on Availability and Transformations of Nitrogen and Phosphorus in Vegetable Farmland Soil

    Xiongsheng Yu / Yong Liu / Mu Zhang / Shaoying Ai / Rongping Wang / Li’an Zhu / Huihua Zhang / Ting Li / Yaqi Zhu / Chao Tu / Qihao Yang / Zili Zhang / Minglong Liu

    Agriculture, Vol 11, Iss 979, p

    An In Situ Study in Southern China

    2021  Volume 979

    Abstract: Reduced fertilization technology is an eco-friendly strategy to minimize nitrogen (N) and phosphorus (P) surpluses and losses in vegetable production. However, little is known about the performance of chemical fertilizer reduction when supplemented with ... ...

    Abstract Reduced fertilization technology is an eco-friendly strategy to minimize nitrogen (N) and phosphorus (P) surpluses and losses in vegetable production. However, little is known about the performance of chemical fertilizer reduction when supplemented with palm silk biochar (PSB) in subtropical acid soils. A short-term (60 d) field investigation under conditions of in situ incubation was conducted in vegetable farmland in southern China. The treatments included no fertilization (Control), 100% conventional fertilization (CF 100 ), 90% conventional fertilization plus 10% PSB-based fertilization (CF 90 B 10 ), 85% conventional fertilization plus 15% PSB-based fertilization (CF 85 B 15 ), and 80% conventional fertilization plus 20% PSB-based fertilization (CF 80 B 20 ). The CF 90 B 10 , CF 85 B 15 , and CF 80 B 20 treatments had the same inputs of total N and P as the CF 100 treatment. Reduced chemical fertilization generally decreased the soil NH 4 + -N regardless of the PSB substitution rate (10%, 15%, or 20%), incubation condition (top-covered or top-open: preventing or allowing the leaching process, respectively), and sampling time (1 day or 60 days). Conversely, compared with the CF 100 treatment, both the CF 85 B 15 and CF 80 B 20 treatments did not lead to a significant decrease in the NO 3 − -N concentration in soil under top-open incubation conditions, but significantly ( p < 0.05) increased soil NO 3 − -N under top-covered incubation conditions. The CF 80 B 20 treatment significantly ( p < 0.05) decreased soil Olsen-P in comparison with the CF 100 treatment, regardless of the incubation condition and sampling time. After applying chemical fertilizer in combination with PSB, soil net ammonification and N mineralization tended to be reduced considerably, with substantial reductions of 39–76% and 24–45%, respectively; reversely, soil net nitrification was stimulated by an increased PSB substitution rate. As the rate of chemical fertilization decreased, the trends in NH 4 + -N and NO 3 − -N losses from the ...
    Keywords biochar ; chemical fertilizer reduction ; co-application ; partial substitution ; nitrogen and phosphorus availability ; in situ incubation ; Agriculture (General) ; S1-972
    Subject code 290
    Language English
    Publishing date 2021-10-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: Morphological effect of BiVO4 catalysts on degradation of aqueous paracetamol under visible light irradiation

    Hu, Changying / Acong Chen / Hui Wang / Jie Xu / Yaqi Zhu / Zhaoyong Bian

    Environmental science and pollution research international. 2016 Sept., v. 23, no. 18

    2016  

    Abstract: Morphological effect of bismuth vanadate (BiVO₄) on visible light-driven catalytic degradation of aqueous paracetamol was carefully investigated using four monoclinic BiVO₄ catalysts. The catalysts with different morphologies were controllably ... ...

    Abstract Morphological effect of bismuth vanadate (BiVO₄) on visible light-driven catalytic degradation of aqueous paracetamol was carefully investigated using four monoclinic BiVO₄ catalysts. The catalysts with different morphologies were controllably prepared by a hydrothermal method without any additions. The prepared catalysts were fully characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-Vis diffuse reflectance spectroscopy (DRS). Under the visible light irradiation, these catalysts with different morphology were investigated to degrade aqueous paracetamol contaminant. The degradation effects were evaluated based on the catalyst morphology, solution pH, initial paracetamol concentration, and catalyst dosage. Cube-like BiVO₄ powders exhibited excellent photocatalytic performance. The optimal photocatalytic performance of the cube-like BiVO₄ in degrading paracetamol was achieved.
    Keywords acetaminophen ; bismuth ; catalysts ; irradiation ; pH ; photocatalysis ; powders ; reflectance spectroscopy ; scanning electron microscopy ; X-ray diffraction
    Language English
    Dates of publication 2016-09
    Size p. 18421-18428.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-016-6975-8
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 5915: Show issues

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  5. Article: Comparative functional characterization of canine IgG subclasses

    Bergeron, Lisa M / Andrea Gonzales / Bill Dunkle / Erin E. McCandless / Graeme Bainbridge / John Shelly / Sandra Lightle / Steve Dunham / Yaqi Zhu

    Veterinary immunology and immunopathology. 2014 Jan. 15, v. 157, no. 1-2

    2014  

    Abstract: To date, very little is known about the functional characteristics of the four published canine IgG subclasses. It is not clear how each subclass engages the immune system via complement-dependent cytotoxicity (CDC) or antibody-dependent cell-mediated ... ...

    Abstract To date, very little is known about the functional characteristics of the four published canine IgG subclasses. It is not clear how each subclass engages the immune system via complement-dependent cytotoxicity (CDC) or antibody-dependent cell-mediated cytotoxicity (ADCC), or how long each antibody may last in serum. Such information is critical for understanding canine immunology and for the discovery of canine therapeutic monoclonal antibodies. Through both in vitro and ex vivo experiments to evaluate canine Fc's for effector function, complement binding, FcRn binding, and ADCC, we are now able to categorize canine subclasses by function. The subclasses share functional properties with the four human IgG subclasses and are reported herein with their function-based human analog. Canine Fc fusions, canine chimeras, and caninized antibodies were characterized. Canine subclasses A and D appear effector-function negative while subclasses B and C bind canine Fc gamma receptors and are positive for ADCC. All canine subclasses bind the neonatal Fc receptor except subclass C. By understanding canine IgGs in this way, we can apply what is known of human immunology toward translational and veterinary medicine. Thus, this body of work lays the foundation for evaluating canine IgG subclasses for therapeutic antibody development and builds upon the fundamental scholarship of canine immunology.
    Keywords chimerism ; complement ; cytotoxicity ; dogs ; functional properties ; humans ; immune system ; immunoglobulin G ; monoclonal antibodies ; receptors ; veterinary medicine
    Language English
    Dates of publication 2014-0115
    Size p. 31-41.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 754160-0
    ISSN 1873-2534 ; 0165-2427
    ISSN (online) 1873-2534
    ISSN 0165-2427
    DOI 10.1016/j.vetimm.2013.10.018
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Cologne/Königswinter

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