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《Effect of near-earth thunderstorms electric field on the intensity of ground cosmic ray positrons/electrons in Tibet》

  • 来源专题：中国科学院紫金山天文台科技信息监测服务
  • 编译者： zhoubz
  • 发布时间：2016-04-11

  • Monte Carlo simulations are performed to study the correlation between the ground cosmic ray intensity and near-earth thunderstorms electric field at YBJ (4300 m a.s.l., Tibet, China). The variations of the secondary cosmic ray intensity are found to be highly dependent on the strength and polarity of the electric field. In negative fields and in positive fields greater than 600 V/cm, the total number of ground comic ray positrons and electrons increases with increasing electric field strength. And these values increase more obviously when involving a shower with lower primary energy or a higher zenith angle. While in positive fields ranging from 0 to 600 V/cm, the total number of ground comic ray positrons and electrons declines and the amplitude is up to 3.1% for vertical showers. A decrease of intensity occurs for inclined showers in positive fields less than 500 V/cm, which is accompanied by smaller amplitudes. In this paper, the intensity changes are discussed, especially concerning the decreases in positive electric fields. Our simulation results are in good agreement with ground-based experimental results obtained from ARGO-YBJ and the Carpet air shower array. These results could be helpful in understanding the acceleration mechanisms of secondary charged particles caused by an atmospheric electric field.

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    • 编译者：武春亮
    • 发布时间：2024-07-01
    • Skip to main content Enter the terms you wish to search for. Search History Organization Chart Work with Us Newsroom Careers Energy.gov Offices National Labs Office of Science Main navigation Office of Science Home About Us About Us Leadership History Honors and Awards Diversity, Equity & Inclusion Energy.gov Home Initiatives Initiatives Advanced and Sustainable Energy Artificial Intelligence and Machine Learning Genomics High Performance Computing Large Scale Scientific Instrumentation Quantum Information Science Mission Mission Science Programs Field Mission Support Office of Project Assessment Science & Innovation Science & Innovation National Labs Universities User Facilities PuRe Data Resources Science Highlights DOE Explains... 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    • 发布时间：2024-07-30
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(2014 - 2018)Waves Random Media (1991 - 2004) Volume number: Issue number (if known): Article or page number: Nanotechnology Purpose-led Publishing is a coalition of three not-for-profit publishers in the field of physical sciences: AIP Publishing, the American Physical Society and IOP Publishing. Together, as publishers that will always put purpose above profit, we have defined a set of industry standards that underpin high-quality, ethical scholarly communications. We are proudly declaring that science is our only shareholder. ACCEPTED MANUSCRIPT ? The following article is Open access Ultrafast and highly sensitive detection of SARS-CoV-2 spike protein by field-effect transistor graphene-based biosensors Thiago Alonso Alonso Stephan Lacerda Sousa1, Nathalie Almeida2, Fabrício Santos2, Priscilla Filgueiras3, Camila Corsini3, Camila Lacerda4, Thais Silva4, Rafaella F. Q. Grenfell5 and Flavio Plentz2 Accepted Manuscript online 26 July 2024 ? © 2024 The Author(s). Published by IOP Publishing Ltd What is an Accepted Manuscript? DOI 10.1088/1361-6528/ad67e8 Download Accepted Manuscript PDF Figures Skip to each figure in the article Tables Skip to each table in the article References Citations Article data Skip to each data item in the article What is article data? Open science Article metrics 1 Total downloads Submit Submit to this Journal Share this article Article and author information Author e-mailsthiagostephan@gmail.com Author affiliations1 Physics, Technical University of Denmark, Fysikvej B309, Lyngby, Hovedstaden, 2800, DENMARK 2 Physics, Universidade Federal de Minas Gerais, Av. Pres. Ant?nio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, BRAZIL 3 Funda??o Oswaldo Cruz Instituto René Rachou, Av. Augusto de Lima, 1715, Barro Preto, Belo Horizonte, Minas Gerais, 30190-002, BRAZIL 4 Physics, Universidade Federal de Minas Gerais, Av. Pres. Ant?nio Carlos, 6627, Pampulha, Belo Horizonte, 31270-901, BRAZIL 5 Funda??o Oswaldo Cruz Centro de Pesquisas René Rachou, Rua Professor José Vieira de Mendon?a, 1000, Belo Horizonte, Minas Gerais, 30190-002, BRAZIL ORCID iDsThiago Alonso Alonso Stephan Lacerda Sousa https://orcid.org/0000-0001-8838-3648 Dates Received 13 March 2024 Revised 16 July 2024 Accepted 26 July 2024 Accepted Manuscript online 26 July 2024 Peer review information Method: Single-anonymous Revisions: 1 Screened for originality? Yes Journal RSS Sign up for new issue notifications 10.1088/1361-6528/ad67e8 Abstract The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), etiological agent for the coronavirus disease 2019 (COVID-19), has resulted in over 775 million global infections. Early diagnosis remains pivotal for effective epidemiological surveillance despite the availability of vaccines. Antigen-based assays are advantageous for early COVID-19 detection due to their simplicity, cost-effectiveness, and suitability for point-of-care testing (PoCT). This study introduces a graphene field-effect transistor-based biosensor designed for high sensitivity and rapid response to the SARS-CoV-2 spike protein. By functionalizing graphene with monoclonal antibodies and applying short-duration gate voltage pulses, we achieve selective detection of the viral spike protein in human serum within 100 μs and at concentrations as low as 1 fg/mL, equivalent to 8 antigen molecules per μL of blood. Furthermore, the biosensor estimates spike protein concentrations in serum from COVID-19 patients. Our platform demonstrates potential for next-generation PoCT antigen assays, promising fast and sensitive diagnostics for COVID-19 and other infectious diseases. Export citation and abstract BibTeX RIS As the Version of Record of this article is going to be / has been published on a gold open access basis under a CC BY 4.0 licence, this Accepted Manuscript is available for reuse under a CC BY 4.0 licence immediately. Everyone is permitted to use all or part of the original content in this article, provided that they adhere to all the terms of the licence https://creativecommons.org/licences/by/4.0 Although reasonable endeavours have been taken to obtain all necessary permissions from third parties to include their copyrighted content within this article, their full citation and copyright line may not be present in this Accepted Manuscript version. Before using any content from this article, please refer to the Version of Record on IOPscience once published for full citation and copyright details, as permissions may be required. All third party content is fully copyright protected and is not published on a gold open access basis under a CC BY licence, unless that is specifically stated in the figure caption in the Version of Record. 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