Recent trends in analytical and digital techniques for the detection of the SARS-Cov-2

Mukhopadhyay, Chitrangada Das; Sharma, Pramita; Sinha, Koel; Rajarshi, Keshav

doi:10.1016/j.bpc.2020.106538

Cited by 31 publications

(14 citation statements)

References 62 publications

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“…With the rapid development of network technology and digital multimedia technology, digital photos, paintings, voice, text, video, and other products have been very common [1]. However, with the development of digital technology and networking [2], fast, accurate, and cheap digital transmission means bring opportunities to countless businesses but also pose new challenges, including infringement, piracy, and arbitrary tampering with digital products (such as electronic publications, audio, video, animation, and image products). is leads to the problems of digital information security and digital product copyright protection.…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Research on Digital Image Watermarking Algorithm Based on Scrambling and Singular Value Decomposition

Pei

2022

Journal of Mathematics

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At present, the digital image watermarking algorithm has not embedded the synchronization signal in the image, resulting in the poor performance of the embedded image in terms of, for example, imperceptibility, anti-attack ability, and robustness. Therefore, a digital image watermarking algorithm based on scrambling and singular value decomposition is proposed. The digital watermark is preprocessed by dimensionality reduction and encryption; the digital image is processed in sections and embedded in the synchronization signal. The digital watermark image is embedded in the digital image watermark by using the low-frequency energy ratio technology of sound channel. The watermark image extraction step is designed to extract the watermark image. The transmittance of the degraded image is calculated, the transmittance is refined by relying on the soft matting algorithm and guiding filter, the image contrast in the image frequency domain is enhanced, and the results are mapped to the appropriate visual range to optimize the visual brightness of the image. Finally, according to the uniqueness of singular value matrix, the distributed characteristics of image matrix data are described, the visual effect is enhanced, and the research of digital image watermarking algorithm is completed. The experimental results show that the algorithm can extract the watermark information completely, the image contrast and singular value have been significantly improved, and the algorithm has better anti-attack performance.

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Section: Introductionmentioning

confidence: 99%

[Retracted] Research on Digital Image Watermarking Algorithm Based on Scrambling and Singular Value Decomposition

Pei

2022

Journal of Mathematics

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“…They can be used for no pain sample analysis, such as the analysis of patient's saliva using graphene oxide (GO)/Au/Fiber Bragg grating (FBG) probe [298]. Nanotechnology can be used to advance technologies such as paper lateral flow assays [299], label-free biosensors [300][301][302], optical technologies [160,303], and digital technologies [304].…”

Section: Discussionmentioning

confidence: 99%

Nanobiotechnology as a platform for the diagnosis of COVID-19: a review

Abdelhamid

Badr

2021

Nanotechnol. Environ. Eng.

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A sensitive method for diagnosing coronavirus disease 2019 (COVID-19) is highly required to fight the current and future global health threats due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV 2). However, most of the current methods exhibited high false-negative rates, resulting in patient misdiagnosis and impeding early treatment. Nanoparticles show promising performance and great potential to serve as a platform for diagnosing viral infection in a short time and with high sensitivity. This review highlighted the potential of nanoparticles as platforms for the diagnosis of COVID-19. Nanoparticles such as gold nanoparticles, magnetic nanoparticles, and graphene (G) were applied to detect SARS-CoV 2. They have been used for molecular-based diagnosis methods and serological methods. Nanoparticles improved specificity and shorten the time required for the diagnosis. They may be implemented into small devices that facilitate the self-diagnosis at home or in places such as airports and shops. Nanoparticles-based methods can be used for the analysis of virus-contaminated samples from a patient, surface, and air. The advantages and challenges were discussed to introduce useful information for designing a sensitive, fast, and low-cost diagnostic method. This review aims to present a helpful survey for the lesson learned from handling this outbreak to prepare ourself for future pandemic.

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“…A critical need for rapid and accurate diagnostic methods has emerged in the clinic and public health organizations. Several PCR-based assays have been developed and are currently being used in clinical, research, and public health laboratories [ 104 , 105 , 106 ]. However, it is not clear which PCR condition they should adopt or whether the data are comparable.…”

Section: Pcr-based Sars-cov-2 Detectionmentioning

confidence: 99%

Nucleic Acid Testing of SARS-CoV-2

Yoo

Kim

2021

IJMS

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The coronavirus disease 2019 (COVID-19) has caused a large global outbreak. It is accordingly important to develop accurate and rapid diagnostic methods. The polymerase chain reaction (PCR)-based method including reverse transcription-polymerase chain reaction (RT-PCR) is the most widely used assay for the detection of SARS-CoV-2 RNA. Along with the RT-PCR method, digital PCR has emerged as a powerful tool to quantify nucleic acid of the virus with high accuracy and sensitivity. Non-PCR based techniques such as reverse transcription loop-mediated isothermal amplification (RT-LAMP) and reverse transcription recombinase polymerase amplification (RT-RPA) are considered to be rapid and simple nucleic acid detection methods and were reviewed in this paper. Non-conventional molecular diagnostic methods including next-generation sequencing (NGS), CRISPR-based assays and nanotechnology are improving the accuracy and sensitivity of COVID-19 diagnosis. In this review, we also focus on standardization of SARS-CoV-2 nucleic acid testing and the activity of the National Metrology Institutes (NMIs) and highlight resources such as reference materials (RM) that provide the values of specified properties. Finally, we summarize the useful resources for convenient COVID-19 molecular diagnostics.

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Recent trends in analytical and digital techniques for the detection of the SARS-Cov-2

Cited by 31 publications

References 62 publications

[Retracted] Research on Digital Image Watermarking Algorithm Based on Scrambling and Singular Value Decomposition

[Retracted] Research on Digital Image Watermarking Algorithm Based on Scrambling and Singular Value Decomposition

Nanobiotechnology as a platform for the diagnosis of COVID-19: a review

Nucleic Acid Testing of SARS-CoV-2

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