1. Kyungpook National University

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    1. Mentioned In 58 Articles

    2. The Validity of the Diagnosis of Plant Leaf Infections Using Non-Destructive Optical Inspection Technique and Depth-Scan Signal Analysis

      Explore ripublication.com NDE/NDT , Other Non-Medical
      The Validity of the Diagnosis of Plant Leaf Infections Using Non-Destructive Optical Inspection Technique and Depth-Scan Signal Analysis
      The applicability of non-destructive optical imaging technique for the diagnosis of infected leaf materials was investigated along with a depth-scan (amplitude depth profile) signal analysis. The experimented plant leaf specimens were collected from persimmon plantations and the specimens were categorized into three groups: healthy leaf specimens, infected leaf specimens, and apparently healthy leaf specimens collected from infected trees. The non-destructive diagnosis was performed using 840 nm spectral domain optical coherence ...
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      Mentions: Jeehyun Kim Kyungpook National University Ruchire Eranga Wijesinghe

    3. Feature Of The Week 09/17/2017: Non-Destructive Analysis of the Internal Anatomical Structures of Mosquito Specimens Using Optical Coherence Tomography

      Explore Optical Coherence Tomography News NDE/NDT , Other Non-Medical
      Feature Of The Week 09/17/2017: Non-Destructive Analysis of the Internal Anatomical Structures of Mosquito Specimens Using Optical Coherence Tomography
      ...a id="ext-gen1025" href="http://www.octnews.org/topic/profile/kyungpook-national-university/" target="_blank">Kyungpook National University. 

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      Mentions: Jeehyun Kim Kyungpook National University Naresh Kumar Ravichandran

    4. Non-Destructive Analysis of the Internal Anatomical Structures of Mosquito Specimens Using Optical Coherence Tomography

      Explore MDPI Open Access Journals Platform NDE/NDT
      Non-Destructive Analysis of the Internal Anatomical Structures of Mosquito Specimens Using Optical Coherence Tomography
      The study of mosquitoes and analysis of their behavior are of crucial importance in the on-going efforts to control the alarming increase in mosquito-borne diseases. Furthermore, a non-destructive and real-time imaging technique to study the anatomical features of mosquito specimens can greatly aid the study of mosquitoes. In this study, we demonstrate the three-dimensional imaging capabilities of optical coherence tomography (OCT) for structural analysis of Anopheles sinensis mosquitoes. The anatomical ...
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      Mentions: Jeehyun Kim Kyungpook National University Naresh Kumar Ravichandran

    5. Structural Changes of the Macula on Optical Coherence Tomography after Vitrectomy for Proliferative Diabetic Retinopathy

      Explore Karger Publishers Ophthalmology
      Structural Changes of the Macula on Optical Coherence Tomography after Vitrectomy for Proliferative Diabetic Retinopathy
      Purpose: This study aimed to evaluate the relationship between macular structural changes and visual prognosis after pars plana vitrectomy (PPV) for proliferative diabetic retinopathy. Methods: The study included 60 eyes that had undergone PPV. Macular optical coherence tomography (OCT) findings were classified into 5 groups preoperatively and 10 groups postoperatively. Best-corrected visual acuity (BCVA) were analyzed according to pre- and postoperative OCT. Results: From the preoperative OCT, normal fovea with ...
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      Mentions: Sungkyunkwan University Kyungpook National University

    6. Structural Analysis of Polymer Composites Using Spectral Domain Optical Coherence Tomography

      Explore MDPI Open Access Journals Platform NDE/NDT
      Structural Analysis of Polymer Composites Using Spectral Domain Optical Coherence Tomography
      The structural analysis of nylon/graphene oxide (NY/GO) and polyetherblockamide/ trisilinolphenyl-polyhederal oligomeric silsesquioxane (PEBA/t-POSS) composites were performed using high-resolution spectral domain optical coherence tomography (SD-OCT). This optical technology revealed both cross-sectional, as well as sub-layer depth information of sample. The non-destructive real-time imaging demonstrated the nature of defects in the composites. The thickness and location of each defect point in the composites were measured using A-scan analysis on ...
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      Mentions: Jeehyun Kim Kyungpook National University Mansik Jeon

    7. Application of wearable optical coherence tomography (OCT) and Loop-mediated isothermal amplification (LAMP) techniques for In situ real-time field inspection of apple Marssonina blotch disease

      Explore Conference Proceedings
      Application of wearable optical coherence tomography (OCT) and Loop-mediated isothermal amplification (LAMP) techniques for In situ real-time field inspection of apple Marssonina blotch disease
      Here we describe the possible application of optical coherence tomography (OCT) to inspect Marssonina coronaria infected apple blotch disease of in situ apple leaves. To fulfill the in situ field inspection requirement, we developed a compact wearable OCT system. For the confirmation of OCT results, simultaneous experiment was performed in realtime using loop-mediated isothermal amplification (LAMP), which is frequently used in agriculture. LAMP method was developed as an alternative approach ...
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      Mentions: Jeehyun Kim Kyungpook National University Naresh Kumar Ravichandran

    8. Dual illumination for cornea and retina imaging using spectral domain optical coherence tomography

      Explore Conference Proceedings Ophthalmology
      Dual illumination for cornea and retina imaging using spectral domain optical coherence tomography
      A dual illumination system is proposed for cornea and retina imaging using spectral domain optical coherence tomography (SD-OCT). The system is designed to acquire cornea and retina imaging with dual illumination with limited optics and using a single spectrometer. The beam propagation for cornea and retina imaging in dual illumination enables to acquire the images of different segments. This approach will reduce the imaging time for separate corneal and retinal ...
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      Mentions: Jeehyun Kim Kyungpook National University Naresh Kumar Ravichandran

    9. In vivo observation of metamorphosis of Plodia interpunctella Hübner using three-dimensional optical coherence tomography

      Explore Wiley Online Library Other Non-Medical
      In vivo observation of metamorphosis of Plodia interpunctella Hübner using three-dimensional optical coherence tomography
      Morphological assessment and three-dimensional reconstructions of internal structures of Plodia interpunctella Hbner during metamorphosis stages were experimentally demonstrated using optical coherence tomography (OCT) for the first time. The conventional, complex sectioning methods were significantly simplified owing to the non-invasive three-dimensional imaging capability of OCT. Further, this study demonstrates the use of OCT as a non-invasive detection tool for in vivo morphological observation of metamorphosis stages to gain a better understanding ...
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      Mentions: Jeehyun Kim Changho Lee Kyungpook National University

    10. In vivo 3D imaging of the human tympanic membrane using a wide-field diagonal-scanning optical coherence tomography probe

      Explore OSA | OSA Publishing Otolaryngology , Probes
      In vivo 3D imaging of the human tympanic membrane using a wide-field diagonal-scanning optical coherence tomography probe
      A wide-field optical coherence tomography (OCT) probe was developed that adapts a diagonal-scanning scheme for three-dimensional (3D) in vivo imaging of the human tympanic membrane. The probe consists of a relay lens to enhance the lateral scanning range up to 7 mm. Motion artifacts that occur with the use of handheld probes were found to be decreased owing to the diagonal-scanning pattern, which crosses the center of the sample to ...
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      Mentions: Stephen A. Boppart Harvard University University of Illinois at Urbana-Champaign

    11. Optical coherence tomography-integrated, wearable (backpack-type), compact diagnostic imaging modality for in situ leaf quality assessment

      Explore OSA | OSA Publishing Other Non-Medical
      Optical coherence tomography-integrated, wearable (backpack-type), compact diagnostic imaging modality for in situ leaf quality assessment
      We developed a compact, wearable diagnostic imaging modality employing optical coherence tomography for in situ plant leaf quality assessments. This system is capable of diagnosing infected leaves at the initial disease stages. Our system is a versatile backpack-type imaging modality with a compact spectrometer, miniature computer, rechargeable power source, and handheld inspection probe. This method enhances real-time in situ specimen inspection through direct implementation of the imaging modality in a ...
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      Mentions: Jeehyun Kim Kyungpook National University Naresh Kumar Ravichandran

    12. Optical sensing method to analyze germination rate of Capsicum annum seeds treated with growth-promoting chemical compounds using optical coherence tomography

      Explore SPIE | Journal NDE/NDT , Other Non-Medical
      Optical sensing method to analyze germination rate of Capsicum annum seeds treated with growth-promoting chemical compounds using optical coherence tomography
      Seed germination rate differs based on chemical treatments, and nondestructive measurements of germination rate have become an essential requirement in the field of agriculture. Seed scientists and other biologists are interested in optical sensing technologies-based biological discoveries due to nondestructive detection capability. Optical coherence tomography (OCT) has recently emerged as a powerful method for biological and plant material discoveries. We report an extended application of OCT by monitoring the germination ...
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      Mentions: Jeehyun Kim Kyungpook National University Ruchire Eranga Wijesinghe

    13. Bio-Photonic Detection and Quantitative Evaluation Method for the Progression of Dental Caries Using Optical Frequency-Domain Imaging Method

      Explore MDPI Open Access Journals Platform Dentistry
      Bio-Photonic Detection and Quantitative Evaluation Method for the Progression of Dental Caries Using Optical Frequency-Domain Imaging Method
      The initial detection of dental caries is an essential biomedical requirement to barricade the progression of caries and tooth demineralization. The objective of this study is to introduce an optical frequency-domain imaging technique based quantitative evaluation method to calculate the volume and thickness of enamel residual, and a quantification method was developed to evaluate the total intensity fluctuation in depth direction owing to carious lesions, which can be favorable to ...
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      Mentions: Harvard University Massachusetts Eye and Ear Infirmary Jeehyun Kim

    14. Non-invasive method and apparatus for screening high-quality seeds

      Explore uspto.gov NDE/NDT , Patents
      Non-invasive method and apparatus for screening high-quality seeds
      Disclosed is a method and apparatus for the non-invasive selection of high-quality seeds, based on optical coherence tomography, by which pathogen-infected and pathogen-free seeds can be discriminated in a non-invasive manner. The apparatus is operated by the processes of scanning a seed of diagnostic interest in a non-invasive manner using an optical coherence tomographic unit; processing interference signals of the scanned tomographic images to produce tomographic image data of the ...
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      Mentions: Jeehyun Kim Changho Lee Kyungpook National University

    15. Dual-path handheld system for cornea and retina imaging using optical coherence tomography

      Explore Home - Springer Ophthalmology , Probes
      Dual-path handheld system for cornea and retina imaging using optical coherence tomography
      A dual-path handheld system is proposed for cornea and retina imaging using spectral domain optical coherence tomography. The handheld sample arm is designed to acquire two images simultaneously. Both eyes of a person can be imaged at the same time to obtain the images of the cornea of one eye and the retina of the other eye. Cornea, retina, and optic disc images are acquired with the proposed sample arm ...
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      Mentions: Jeehyun Kim Kyungpook National University Naresh Kumar Ravichandran

    16. Full-Field Optical Coherence Tomography Using Galvo Filter-Based Wavelength Swept Laser

      Explore MDPI Open Access Journals Platform Tunable Sources
      Full-Field Optical Coherence Tomography Using Galvo Filter-Based Wavelength Swept Laser
      We report a wavelength swept laser-based full-field optical coherence tomography for measuring the surfaces and thicknesses of refractive and reflective samples. The system consists of a galvo filterbased wavelength swept laser and a simple Michelson interferometer. Combinations of the reflective and refractive samples are used to demonstrate the performance of the system. By synchronizing the camera with the source, the cross-sectional information of the samples can be seen after each ...
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      Mentions: Jeehyun Kim Kyungpook National University Mansik Jeon
    17. 1-15 of 58 1 2 3 4 »
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      4. About Kyungpook National University

        Kyungpook National University

        Kyungpook National University (KNU), is a leading national university in Daegu, South Korea. The university is one of 10 Flagship Korean National Universities. It is one of the three best recognized and oldest national universities with Seoul National University and Pusan National University. The university was established in September 1946, succeeding the former Daegu Teacher's College, Daegu Agricultural College, and Daegu Medical College. In 2008, it merged with Sangju National University.

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