Showing 901 - 920 results of 6,806 for search 'surface detection', query time: 0.11s Refine Results
  1. 901

    Narrow band imaging in detection of early laryngeal malignancy by Bharathi Mohan M, Leena Rajam, Vikram V J, Sathya Narayanan N, Ashwin P

    Published 2025-07-01
    “…NBI recently demonstrated increased specificity (87–92%) and sensitivity (61–91%) in early detection of laryngeal malignancy. In this study, we aim to determine the effectiveness and limitation of narrow-band imaging in detecting laryngeal malignancy and determine the extent of resection margin in case of excision biopsy in suspicious mucosal lesions of the larynx. …”
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  2. 902

    Infrared Satellite Detection Limits for Monitoring Atmospheric Ammonia by Mark W. Shephard, Shailesh K. Kharol, Enrico Dammers, Christopher E. Sioris, Andrew Bell, Rik Jansen, Jerome Caron, Ralph Snel, Emanuela Palombo, Karen E. Cady-Pereira, Chris A. McLinden, Erik Lutsch, Robert O. Knuteson

    Published 2025-01-01
    “…For example, a Cross-track Infrared Sounder-like instrument with a modest spectral resolution of 0.625 cm<sup>&#x2212;1</sup> and excellent signal-to-noise ratio of &#x223C;1600 would be able to detect ammonia on average &#x223C;70% of the time; these same instrument specifications will have a detection limit of 0.2 ppbv (surface) or 1.6&#x00D7;10<sup>15</sup> molec cm<sup>&#x2212;2</sup> (total column) that can be achieved at a detection rate of 10% as it requires favorable infrared remote sensing conditions (large thermal contrast). …”
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  3. 903
  4. 904

    Surface chemical compositions and dispersity of starch nanocrystals formed by sulfuric and hydrochloric acid hydrolysis. by Benxi Wei, Xueming Xu, Zhengyu Jin, Yaoqi Tian

    Published 2014-01-01
    “…Surface chemical compositions of starch nanocrystals (SNC) prepared using sulfuric acid (H2SO4) and hydrochloric acid (HCl) hydrolysis were analyzed by X-ray photoelectron spectroscopy (XPS) and FT-IR. …”
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  5. 905

    Role of hospital environmental surfaces in the transmission of the severe acute respiratory syndrome - Coronavirus-2 by Eman A El-Masry, Ahmed E Taha

    Published 2022-09-01
    “…The real-time reverse-transcription PCR (rRT-PCR) system targeting RNA-dependent RNA polymerase and E genes was used to detect the SARS-CoV-2 RNA.  Results: Moderate environmental contamination by SARS-CoV-2 RNA was detected by rRT-PCR before routine cleaning/disinfection (52% of the swabs were positive). …”
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  6. 906

    Comparison of Surface-Enhanced Raman Scattering in Colloidal Silver Nanostar ‎and Colloidal Silver Nanocubes by Zinah Salahuddin Shakir, Sameer Khudhur Yaseen, Ayad Abdul Razzak Dhaigham

    Published 2024-10-01
    “… Surface-enhanced Raman spectroscopy (SERS) is an extremely responsive and selective method that improves the Raman scattering signals of molecules utilizing nanomaterials as substrates. …”
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  7. 907

    In situ, modeled, and earth observation monitoring of surface water availability in West African rangelands by Kimberly Slinski, Kimberly Slinski, Gabriel B. Senay, Alkhalil Adoum, Shraddhanand Shukla, Amy McNally, James Rowland, Erwann Fillol, Soni Yatheendradas, Soni Yatheendradas, Chris Funk, Andrew Hoell, Michael Jasinski

    Published 2025-06-01
    “…This study compares water availability estimates derived from Landsat and Sentinel 1 satellite imagery to in situ observations and model simulations of water availability in 22 ephemeral ponds located in the Ferlo region of Senegal.Results and discussionThe Active-Passive Water Classification (APWC) algorithm detected surface water at each location. Over 2022 and 2023, water was detected in pond locations annually at a frequency of 68.2% for all ponds and at a frequency of 43.8% for ponds with a surface area &lt;10,000 square meters (m2). …”
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  8. 908

    Influence of Light-Emitting Diode-Derived Blue Light Overexposure on Rat Ocular Surface by Li Nan, Yifan Zhang, Hui Song, Yan Ye, Zhixin Jiang, Shujun Zhao

    Published 2023-01-01
    “…Tear film breakup time (TBUT), tear volume, and corneal fluorescein staining scores were used to measure the changes to the ocular surface. Expressions of nuclear factor-κB (NF-κB), inhibitor-κB (I-κB), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) were measured by real-time PCR, and the activation of the NF-κB pathway was detected by Western blotting, respectively. …”
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  9. 909

    The effect of topical antibiotic or antibiotic-corticosteroid treatment on the ocular surface microbiota of healthy horses by M. G. Martin de Bustamante, C. E. Plummer, B. Caddey, D. E. Gomez

    Published 2025-08-01
    “…After treatments, Proteobacteria declined in all groups, and Firmicutes and Bacteroidete’s relative abundance increased, returning to baseline levels on day 30. The main genera detected on the ocular surface on day 0 were Suttonella, Nicoletella, Pasteurella, and members of the family Moraxellaceae. …”
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  10. 910

    Polarization-Based Method for Object Surface Orientation Information in Passive Millimeter-Wave Imaging by Yayun Cheng, Fei Hu, Liangqi Gui, Liang Wu, Liang Lang

    Published 2016-01-01
    “…Surface orientation information is essential to depicting the 3-D structure of an object. …”
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  11. 911

    Microbial community structure and resistome dynamics on elevator buttons in response to surface disinfection practices by Shanshan Ye, Shanshan Ye, Shifu Peng, Xiaolei Wang, Xiaolei Wang, Jingjing Fan, Jingjing Fan, Chenxue Zhu, Liye Huang, Ying Huang, Keping Cheng, Tingting Ni, Yuqing Qian, Xiaosong Wu, Xiaosong Wu, Xiaosong Wu, Xiaosong Wu, Yan Xu, Yan Xu, Yan Xu, Yan Xu

    Published 2025-05-01
    “…We focused on detecting disinfectant resistance genes (DRGs), antibiotic resistance genes (ARGs), and mobile genetic elements (MGEs).ResultsSignificant differences were observed in the bacterial community structures on elevator button surfaces across the four types of environments. …”
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  12. 912

    Spatiotemporal patterns of accumulation and surface roughness in interior Greenland with a GNSS-IR network by D. J. Pickell, R. L. Hawley, A. LeWinter

    Published 2025-03-01
    “…We show that individual measurements are highly precise (<span class="inline-formula">±2.8</span> cm), while the aggregate of hundreds of daily measurements across a large spatial footprint can detect millimeter-level surface changes and is biased by <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">2.7</mn><mo>±</mo><mn mathvariant="normal">3.0</mn></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="52pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="18d7b8dc74f09b9e31b658aba1690875"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-19-1013-2025-ie00001.svg" width="52pt" height="10pt" src="tc-19-1013-2025-ie00001.png"/></svg:svg></span></span> cm compared to a unique validation data set that covers a similar spatial extent to the instrument sensing footprint. …”
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  13. 913

    Effect of Whitening dentifrice on discoloration of tooth surface: an updated systematic review and meta-analysis by Samira Hajisadeghi, Mohsen Khansari, Mohsen Yazdanian, Elham Keykha

    Published 2025-04-01
    “…Low publication bias was detected, and sensitivity analyses confirmed the robustness of the findings. …”
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  14. 914

    Ocular surface changes in allergic blepharoconjunctivitis and dry eye syndrome: diagnosis and therapy possibilities by S. N. Sakhnov, S. V. Yanchenko, A. V. Malyshev, Sh. J. Teshaev, M. Yu. Odilov, G. R. Odilova

    Published 2024-03-01
    “…LD and AD were diagnosed in 48 % of 2nd group (OSDI 48.5 ± 6.4, TBUT 5.5 ± 0.6, TMH 192.3 ± 20.8, XI 2.5 ± 0.5, MGDS 1.8 ± 0.4, LWS 1.9 ± 0.3). LD, AD and MD were detected in 52 % of the 2nd group patients (OSDI 57.5 ± 5.8, TBUT 4.6 ± 0.6, TMH 177.7 ± 16.9, XI 5.5 ± 0.6, MGD-S 2.2 ± 0.4, LWS 2.3 ± 0.4). …”
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  15. 915

    Advanced Feature Analysis of Eddy Current Testing Signals for Rail Surface Defect Characterization by Michele Quercio, Luca Santoro, Raffaella Sesana, Francesco Riganti Fulginei

    Published 2025-01-01
    “…These results underscore the effectiveness of using multiple signal-decomposition strategies and advanced analytics to robustly detect and categorize surface defects for better rail-maintenance decisions.…”
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  16. 916

    ON OBSERVATION OF ULF ELECTROMAGNETIC SIGNALS FROM REMOTE EARTHQUAKES AND DISTRIBUTION OF THEIR SOURCES ON THE EARTH’S SURFACE by B. V. Dovbnya

    Published 2021-09-01
    “…Attention is given to the uneven distribution of their sources (i.e. earthquakes) on the earth’s surface. Our study shows that the ULF electromagnetic signals are clustered in separate zones and cells. …”
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  17. 917

    Importance of fluvial inflows in the intra-lake heterogeneity of surface water temperatures on the Tibetan Plateau by Bingqing Du, Jing Zhou, Deliang Chen, Hu Liu, Baoyan Liu, Ruishun Liu, Lei Wang

    Published 2025-05-01
    “…Spatiotemporal variations in the lake surface water temperature (LSWT) significantly impact regional ecosystem stability, carbon cycling, and regional climate. …”
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  18. 918

    A non-binding surface demonstrates increased thrombogenicity under plasma-free conditions by Cezary Watala, Boguslawa Luzak, Tomasz Przygodzki, Magdalena Boncler

    Published 2025-07-01
    “…Adhesion was barely detectable for PRP on the non-binding surface and for isolated platelets on the PS and PP surfaces. …”
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  19. 919

    Experimental Study of L-band and S-band SAR Signal Penetration into Soil and Hard Surface by G. Liu, W. Peng, X. Ding, J. Zhu, H. Fu, R. Zhao, S. Wu

    Published 2025-07-01
    “…The penetration depth of Synthetic Aperture Radar (SAR) signals is a critical parameter for assessing subsurface characteristics and detecting concealed structures. Although numerous empirical and scattering models have been proposed to estimate signal penetration depth (SPD), there remains a lack of understanding of SPD in various settings. …”
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  20. 920

    Possibilities of using biosorbents and synthetic sorbents in monitoring heavy metal pollution of surface waters by Andrzej Kłos, Sławomir Wierzba, Magdalena Piechaczek-Wereszczyńska, Kacper Matik, Mariusz Głowacki, Maciej Płotka, Alicja Gawdzik, Mirosław Wiatkowski, Agnieszka Dołhańczuk-Śródka, Zbigniew Ziembik

    Published 2025-02-01
    “…The results presented here indicate that, with relatively stable water salinity levels, it is possible to detect exceedances of permissible heavy metal concentrations in surface waters on the basis of an analysis of metal concentrations in synthetic cationites exposed in water.…”
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