Showing 701 - 720 results of 22,558 for search 'detection sampling', query time: 0.20s Refine Results
  1. 701
  2. 702

    Application of PCR in serum samples for diagnosis of paracoccidioidomycosis in the southern Bahia-Brazil. by Lucas Dias, Leila Falcão de Carvalho, Carla C Romano

    Published 2012-01-01
    “…Detection limit was 1.1 pg/µL of DNA. Despite the high detection limit and specificity of PCR none of the 76 serum samples were found positive by PCR, but a biopsy specimen obtained from one of the patients with PCM was positive. …”
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  3. 703

    A Novel Sample Based Quadrature Phase Shift Keying Demodulator by Asraf Mohamed Moubark, Sawal Hamid Md Ali

    Published 2014-01-01
    “…This paper presents a new practical QPSK receiver that uses digitized samples of incoming QPSK analog signal to determine the phase of the QPSK symbol. …”
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  4. 704

    Electrochemical Disposable Printed Aptasensor for Sensitive Ciprofloxacin Monitoring in Milk Samples by Daniela Nunes da Silva, Thaís Cristina de Oliveira Cândido, Arnaldo César Pereira

    Published 2025-06-01
    “…An electrochemical aptasensor was developed for the rapid and sensitive detection of ciprofloxacin (CPX) in milk samples. The device was fabricated on a polyethylene terephthalate (PET) substrate using a screen-printing technique with carbon-based conductive ink. …”
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  5. 705

    Markers infectious agent in the cord blood samples public register of donors by A. B. Smoljaninov, D. A. Ivolgin, I. I. Maslennikova, O. V. Supil’nikova, I. A. Pirozhkov, A. D. Krjuchkova

    Published 2014-10-01
    “…Markers of the agents above have not been found in the plasma of 481 samples (13.6%). During the described period, no significant change in the share of samples containing antibodies to cytomegalovirus and toxoplasmosis (cytomegalovirus – 1978 samples (56%), Toxoplasma gondii – 112 samples (3.2%), 825 samples (23.4%) cytomegalovirus and Toxoplasma gondii simultaneously) were registered. 137 samples (3.9%) were subjected to utilization in connection with detection of antibodies to HbcorAg – 116 samples (3.3%), antibodies to HCV – five samples (0.14%), and antibodies to Treponema pallidum – 16 samples (0.45%).Conclusion. …”
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  6. 706
  7. 707

    Automatic construction of global cloud sample database based on Landsat imagery by Tao He, Guihua Huang, Lei Zhang, Daiqiang Wu, Yichuan Ma

    Published 2025-06-01
    “…In order to address problems of cloud samples required for cloud detection, such as reliance on manual interpretation, high collection costs, and limited quantity, this paper proposed a universal and automatic construction algorithm for cloud sample database (UAC-CSD) to create a large database of accurate and representative global cloud samples. …”
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  8. 708

    Identification of JC polyomavirus in upper respiratory samples from Portuguese children by Joana M. Oliveira, Daniela Veiga, Helena Martins, Cristina Luxo, Ana M. Matos

    Published 2024-10-01
    “…Results: JCPyV DNA was detected in 3.1 % of the nasopharyngeal swabs analysed, with higher frequency of detection in samples from children (4.5 %) than from adults (0.5 %) (p = 0.005). …”
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  9. 709
  10. 710

    Collection of SARS-CoV-2 Virus from the Air of a Clinic within a University Student Health Care Center and Analyses of the Viral Genomic Sequence by John A. Lednicky, Sripriya N. Shankar, Maha A. Elbadry, Julia C. Gibson, Md. Mahbubul Alam, Caroline J. Stephenson, Arantzazu Eiguren-Fernandez, J. Glenn Morris, Carla N. Mavian, Marco Salemi, James R. Clugston, Chang-Yu Wu

    Published 2020-05-01
    “…A pilot SARS-CoV-2 air sampling study conducted at a clinic within a university student health care center detected the virus vRNA, with an estimated concentration of 0.87 virus genomes L−1 air. …”
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    Article
  11. 711

    Spectrophotometric Determination of Chromium Using Indigo Carmine -Application in Various Samples by Baghdad Science Journal

    Published 2016-09-01
    “…The method is developed for the determination of chromium(III) and has been successfully applied to the determination of chromium in various water samples, Pharmaceutical preparations ,standard rock sample of (MRG-1).…”
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  12. 712

    Extraction of HCV-RNA from Plasma Samples: Development towards Semiautomation by Imran Amin, Tania Jabbar, Fawad Niazi, Muhammad Saeed Akhtar

    Published 2015-01-01
    “…Comparison of test results obtained by two extraction methods showed a good correlation (r=0.95, n=30) with detection limit of 102 IU mL−1. The semiautomated vacuum filtration based protocol demonstrated high throughput: 35 minutes for the extraction of a batch of 30 samples (150 µL each) with reduced labor, time, waste, and cost. …”
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  13. 713

    Forensic comparison of Soil Samples in Omerli Dam by FTIR and ICP-OES by Sevil Atasoy, İkra Sedef Boler, Soner Kızıl

    Published 2024-08-01
    “…FTIR and ICP-OES have been utilized for structural analysis and detection of metal contect in soil samples. Moreover, textural analysis, pH, sedimentation, color tests have been systematically investigated. …”
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  14. 714

    Determination of Chlorpromazine Using Molecular Imprinting Polymers in Different Sample Matrices by Eman Wajeh Ammen, Yehya Kamal Al-Bayati

    Published 2024-12-01
    “…The aim of this review is to present and highlight the various methods used to determine chlorpromazine based on molecular imprinting polymers in different samples.…”
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  15. 715

    Controlled Text Generation of Lung Cancer Descriptions for Small Sample Data by Xiaochao Dang, Zhengzhang Zhao, Fenfang Li

    Published 2024-12-01
    “…The utilization of natural language processing methodologies for the analysis of lung cancer data can facilitate the detection, diagnosis and treatment of this disease. …”
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  16. 716

    ALGORITHM OF PREPARATION OF THE TRAINING SAMPLE USING 3D-FACE MODELING by D. I. Samal, I. I. Frolov

    Published 2017-01-01
    “…The third-party software ‘FaceGen’ allowing to model up to 150 parameters and available in a demoversion for free downloading is used for 3D-modeling.The SVM classifier was chosen to test the impact of the introduced modifications of training sample. The preparation and preliminary processing of images contains the following constituents like detection and localization of area of the person on the image, assessment of an angle of rotation and an inclination, extension of the range of brightness of pixels and an equalization of the histogram to smooth the brightness and contrast characteristics of the processed images, scaling of the localized and processed area of the person, creation of a vector of features of the scaled and processed image of the person by a Principal component analysis (algorithm NIPALS), training of the multiclass SVM-classifier.The provided algorithm of expansion of the training selection is oriented to be used in practice and allows to expand using 3D-models the processed range of 2D – photographs of persons that positively affects results of identification in system of face recognition. …”
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  17. 717

    Diagnosis and molecular typing of rabies virus in samples stored in inadequate conditions by Fernando J Beltran, Federico Gury Dohmen, Horacio Del Pietro, Daniel M Cisterna

    Published 2014-08-01
    “…In addition, 100% of the inadequately preserved samples were characterized molecularly. The limit of detection of RT-PCR was 0.5 MICDL50/0.03 mL. …”
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  18. 718

    A tutorial on solid-phase analytical derivatization in sample preparation applications by Azamat Temerdashev, Sanka N. Atapattu, Yu-Qi Feng

    Published 2024-11-01
    “…Solid-phase analytical derivatization is a versatile sample preparation technique that enhances analysis accuracy, efficiency, reproducibility, and sensitivity. …”
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  19. 719

    Study of methods for extracting contours of objects on raster images of amber samples by Yu.O. Podchashynskyi, A.V. Ryzhuk

    Published 2024-06-01
    “…Effective methods and algorithms for detecting objects and their contours on raster images significantly improve the performance of TVS in applied tasks. …”
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  20. 720

    Enzymatic remediation of polyester microfibers in sewage sludge and green compost samples by Cristina Palacios-Mateo, Esperanza Huerta-Lwanga, Jules A. W. Harings, Lars M. Blank

    Published 2025-06-01
    “…The assessment of biodegradation was carried out through monomer detection. Different enzyme loadings (0 – 300 µg); substrate concentrations (0 –200 mg/cm3) and mixing methods (shaking – rotating) were tested. …”
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