LIVIVO - Das Suchportal für Lebenswissenschaften

switch to English language
Erweiterte Suche

Suchergebnis

Treffer 1 - 10 von insgesamt 546

Suchoptionen

  1. Artikel ; Online: Design and optimization of the seed pulse generation scheme for precise beam synchronization in the Xingguang-III laser.

    Zhou, Song / Zeng, Xiaoming / Zhou, Kainan / Huang, Xiaojun / Wang, Xiaodong / Wang, Xiao / Xie, Na / Jiang, Dongbin / Wu, Zhaohui / Zhao, Lei / Wen, Jing / Zhang, Ying / Huang, Zheng / Sun, Li / Guo, Yi / Li, Qing / Zhu, Qihua / Su, Jingqin / Jing, Feng

    Applied optics

    2016  Band 55, Heft 28, Seite(n) 8003–8006

    Abstract: Xingguang-III is a large hybrid optical parametric amplification/chirped pulse amplification laser ...

    Abstract Xingguang-III is a large hybrid optical parametric amplification/chirped pulse amplification laser that outputs synchronized femtosecond, picosecond, and nanosecond beams with three different wavelengths, i.e., 800, 1053, and 527 nm, respectively. We present here an in-house front-end system design that generates the 1053 nm seed laser for the ps/ns beam directly from the 800 nm femtosecond laser, which enables the three beams to have intrinsic synchronization. The results show that a seed laser of 140 μJ energy and 1053 nm central wavelength with 34 nm spectral width (FWHM) is generated and the shot-to-shot timing jitter (peak-to-valley) between the fs and the ps beam is less than 1.32 ps.
    Sprache Englisch
    Erscheinungsdatum 2016-10-01
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1539-4522
    ISSN (online) 1539-4522
    DOI 10.1364/AO.55.008003
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  2. Artikel: Concerns on the Effectiveness of Current COVID-19 Vaccines.

    Li, Xingguang

    Frontiers in microbiology

    2022  Band 13, Seite(n) 848803

    Sprache Englisch
    Erscheinungsdatum 2022-06-06
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2022.848803
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  3. Artikel ; Online: Concerns on the multiple nomenclature systems for SARS-CoV-2.

    Li, Xingguang

    Journal of medical virology

    2021  Band 94, Heft 3, Seite(n) 1224–1226

    Abstract: The multiple nomenclature systems of SARS-CoV-2 are confusing and have several issues. The emergence of variants of concern and variants of interest has posed an increased risk to global health. To assist with public discussion and communication with ... ...

    Abstract The multiple nomenclature systems of SARS-CoV-2 are confusing and have several issues. The emergence of variants of concern and variants of interest has posed an increased risk to global health. To assist with public discussion and communication with nonscientific audiences about significant mutations, and ultimately to inform the ongoing response to the COVID-19 pandemic, we scientists need to develop easy-to-pronounce and nonstigmatizing labels for significant mutations.
    Mesh-Begriff(e) COVID-19 ; Global Health ; Humans ; Mutation ; Pandemics ; SARS-CoV-2/genetics
    Sprache Englisch
    Erscheinungsdatum 2021-11-02
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 752392-0
    ISSN 1096-9071 ; 0146-6615
    ISSN (online) 1096-9071
    ISSN 0146-6615
    DOI 10.1002/jmv.27406
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  4. Artikel ; Online: Enantioselective synthesis of spiro-

    Xie, Xiang-Qi / Li, Xingguang / Liu, Pei-Nian

    Chemical communications (Cambridge, England)

    2024  Band 60, Heft 11, Seite(n) 1448–1451

    Abstract: We present an iridium and Brønsted acid co-catalyzed enantioselective formal [4+2] cycloaddition reaction of cyclic enamides with 2-(1-hydroxyallyl)phenols. This method yields a wide range ... ...

    Abstract We present an iridium and Brønsted acid co-catalyzed enantioselective formal [4+2] cycloaddition reaction of cyclic enamides with 2-(1-hydroxyallyl)phenols. This method yields a wide range of
    Sprache Englisch
    Erscheinungsdatum 2024-02-01
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d3cc05923e
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  5. Artikel ; Online: Omicron: Call for updated vaccines.

    Li, Xingguang

    Journal of medical virology

    2021  Band 94, Heft 4, Seite(n) 1261–1263

    Abstract: The Omicron SARS-CoV-2 variant was potentially generated from a chronically infected COVID-19 patient vaccinated with an messenger RNA (mRNA)- or non-mRNA-based vaccine, offering the opportunity for the virus to evolve and mutate to evade the body's ... ...

    Abstract The Omicron SARS-CoV-2 variant was potentially generated from a chronically infected COVID-19 patient vaccinated with an messenger RNA (mRNA)- or non-mRNA-based vaccine, offering the opportunity for the virus to evolve and mutate to evade the body's immune response. To understand the significance of this SARS-CoV-2 variant and what it means for the global response to the pandemic, vaccinologists should systematically evaluate the role of mRNA- and non-mRNA-based vaccines in the generation of novel SARS-CoV-2 variants, including variants of concerns (VOCs) and interest (VOIs), that occur via breakthrough vaccine-elicited immunity. Although COVID vaccine boosters are likely to offer some protection and mRNA- or non-mRNA-based vaccines can be adapted to new variants, such as Omicron, the requirement of a booster so soon after full vaccination, with further shots potentially required, is of concern given the impacts on human health. Therefore, in the race to protect the global population against novel SARS-CoV-2 VOCs and VOIs, there is an urgent need to create much more effective one-dose vaccines that can protect people over their entire lifetime.
    Mesh-Begriff(e) COVID-19/immunology ; COVID-19/prevention & control ; COVID-19/virology ; COVID-19 Vaccines/immunology ; Humans ; Immune Evasion ; Immunization, Secondary ; Immunocompromised Host ; Protein Binding ; SARS-CoV-2/genetics ; SARS-CoV-2/immunology ; Spike Glycoprotein, Coronavirus/genetics ; Spike Glycoprotein, Coronavirus/immunology ; Vaccine Development
    Chemische Substanzen COVID-19 Vaccines ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2
    Sprache Englisch
    Erscheinungsdatum 2021-12-28
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 752392-0
    ISSN 1096-9071 ; 0146-6615
    ISSN (online) 1096-9071
    ISSN 0146-6615
    DOI 10.1002/jmv.27530
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  6. Artikel ; Online: The emergence and circulation of human immunodeficiency virus (HIV)-1 subtype C.

    Li, Xingguang / Tamim, Sana / Trovão, Nídia S

    Journal of medical microbiology

    2024  Band 73, Heft 5

    Abstract: Introduction. ...

    Abstract Introduction.
    Mesh-Begriff(e) HIV-1/genetics ; HIV-1/classification ; HIV-1/isolation & purification ; Humans ; HIV Infections/virology ; HIV Infections/epidemiology ; HIV Infections/transmission ; Phylogeny ; Evolution, Molecular
    Sprache Englisch
    Erscheinungsdatum 2024-05-16
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 218356-0
    ISSN 1473-5644 ; 0022-2615
    ISSN (online) 1473-5644
    ISSN 0022-2615
    DOI 10.1099/jmm.0.001827
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  7. Artikel: Farmland rental market participation and residential energy consumption: Evidence from rural areas in China

    Li, Xingguang

    Energy. 2022 May 13,

    2022  

    Abstract: Farmland rental market participation could improve rural factor allocation efficiency and increase household income, which affected residential energy consumption. Thus, the main goal of this paper was to study the impact of farmland rental market ... ...

    Abstract Farmland rental market participation could improve rural factor allocation efficiency and increase household income, which affected residential energy consumption. Thus, the main goal of this paper was to study the impact of farmland rental market participation on residential energy consumption by using a data set that covered 5018 effective samples. Compared with the existing studies, the main contributions of this paper were that: (i) a systematic theoretical model for the relationship between farmland rental market participation and residential energy consumption was established, which expanded the research perspective; (ii) the instrumental variable (IV) approach, the endogenous switching regression model and the mediation effect model were used to test empirically the impact of farmland rental market participation on residential energy consumption, which enriched the research conclusions. The results indicated that: (i) compared with farm households without renting in land, residential energy consumption and electricity consumption for farm households with renting in land were significantly raised by 12.52% and 9.53%, respectively; (ii) expanding farm size decreased significantly the number of labor migration to urban areas by 16.31%, and expanding farm size boosted residential energy consumption by reducing the number of labor migration to urban areas; (iii) expanding farm size increased significantly household income by 7.68%, and expanding farm size raised residential energy consumption by raising household income. This study was conducive to not only enhancing the sustainable economic development, but also expanding and improving the research conclusions of the existing literature.
    Schlagwörter agricultural land ; data collection ; economic development ; electric energy consumption ; energy ; farm size ; farms ; household income ; markets ; regression analysis ; theoretical models
    Sprache Englisch
    Erscheinungsverlauf 2022-0513
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel
    Anmerkung Pre-press version
    ZDB-ID 2019804-8
    ISSN 0360-5442 ; 0360-5442
    ISSN (online) 0360-5442
    ISSN 0360-5442
    DOI 10.1016/j.energy.2022.124296
    Datenquelle NAL Katalog (AGRICOLA)

    Zusatzmaterialien

    Kategorien

  8. Artikel ; Online: Self-Assembled Integrated Nanozyme Cascade Biosensor with Dual Catalytic Activity for Portable Urease Analysis.

    Li, Meini / Xie, Yunfei / Zhang, Jiabao / Su, Xingguang

    Analytical chemistry

    2024  Band 96, Heft 3, Seite(n) 1284–1292

    Abstract: In this work, a novel nanozyme (Cu@Zr) with all-in-one dual enzyme and fluorescence properties is designed by simple self-assembly. A nanozyme cascade sensor with disodium phenyl phosphate (PPDS) as substrate was first established by exploiting the dual ... ...

    Abstract In this work, a novel nanozyme (Cu@Zr) with all-in-one dual enzyme and fluorescence properties is designed by simple self-assembly. A nanozyme cascade sensor with disodium phenyl phosphate (PPDS) as substrate was first established by exploiting the dual enzymatic activities of phosphatase and laccase. Specifically, phosphatase cleaves the P-O bond of PPDS to produce colorless phenol, which is then oxidized by laccase and complexed with the chromogenic agent 4-aminoantipyrine (4-AP) to produce red quinoneimine (QI). Strikingly, the NH
    Mesh-Begriff(e) Urease/chemistry ; Laccase ; Hydrolysis ; Phosphoric Monoester Hydrolases ; Biosensing Techniques ; Colorimetry
    Chemische Substanzen Urease (EC 3.5.1.5) ; Laccase (EC 1.10.3.2) ; Phosphoric Monoester Hydrolases (EC 3.1.3.2)
    Sprache Englisch
    Erscheinungsdatum 2024-01-09
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.3c04652
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  9. Artikel: Concerns on cross-species transmission of SARS-CoV-2 between pets and humans.

    Li, Xingguang / Liu, Haizhou / Tong, Yigang

    Frontiers in microbiology

    2022  Band 13, Seite(n) 985528

    Sprache Englisch
    Erscheinungsdatum 2022-09-21
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2022.985528
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  10. Artikel ; Online: Unidirectional asymmetry transmission based on quasi-accidental bound states in the continuum.

    Zhang, Yingjie / Liu, Xingguang / Zhao, Rui / Li, Junqing

    Physical chemistry chemical physics : PCCP

    2023  Band 25, Heft 46, Seite(n) 31869–31873

    Abstract: The unidirectional asymmetry transmission is demonstrated based on quasi-accidental bound states in the continuum by a one-dimensional chiral photonic crystal slab (CPhCs) composed of tilted silicon nano-pillars. The chirality breaks symmetries on the ... ...

    Abstract The unidirectional asymmetry transmission is demonstrated based on quasi-accidental bound states in the continuum by a one-dimensional chiral photonic crystal slab (CPhCs) composed of tilted silicon nano-pillars. The chirality breaks symmetries on the far field polarization and radiation
    Sprache Englisch
    Erscheinungsdatum 2023-11-29
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d3cp03265e
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

Zum Seitenanfang