Showing 1,361 - 1,380 results of 1,490 for search '"Photonics"', query time: 0.04s Refine Results
  1. 1361

    Persistent Visual Aura following Catheter Ablation in a Patient with WPW Syndrome by Shinichi Koyama, Mitsuru Kawamura

    Published 2007-01-01
    “…Magnetic resonance imaging (MRI) and single photon emission computed tomography (SPECT), electroenchepalogram (EEG), and visual-evoked potentials (VEP) in the patient were normal. …”
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  2. 1362

    Luminescence of bound excitons created near sodium impurity ions in KCl:Na single crystals by K. Shunkeyev, А. Kenzhebayeva, A. Krasnikov, V. Nagirnyi, Sh Sagimbayeva, D. Sergeyev, А. Tilep, Zh Ubaev, A. Lushchik

    Published 2025-02-01
    “…The lifetime of the fast component of cathodoluminescence at 2.8 and 3.1 eV equals 2.4 and 1.7 ns, respectively, at 6 K and even shortens to approximately τ ≈ 0.3 ns at room temperature. At 10 K, photons of 7.6 and 6.7 eV directly form ELFs in the field of single or paired Na+ impurity ions with typical luminescence bands peaked, respectively, at 2.8 eV (el0 (Na+)) and 3.1 eV (el0 (Na+-Na+)). …”
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  3. 1363

    Experimental study of mortar incorporating nano-magnetite on engineering performance and radiation shielding by Kunchariyakun Kittipong, Sinyoung Suthatip, MacKenzie Kenneth J. D., Pungkun Vithit, Raknarong Pakkamai, Teh Musofpar, Jekabaso Afham, Sittichan Narumol

    Published 2025-02-01
    “…A 5 wt% addition of nano-Fe3O4 provided the best physical (1,847 ± 19.1 kg m−3), compressive strength (216.79 ± 6.19 ksc at 28 days), and radiation shielding properties, increasing the photon linear attenuation coefficient to 0.155 cm−1 from 0.144 cm−1 in the material without nano-Fe3O4. …”
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  4. 1364

    Multi-modality Imaging Identifies Key Times for Annexin V Imaging as an Early Predictor of Therapeutic Outcome by Stefanie J. Mandl, Carina Mari, Matthias Edinger, Robert S. Negrin, Jonathan F. Tait, Christopher H. Contag, Francis G. Blankenberg

    Published 2004-01-01
    “…To address this issue, we obtained simultaneous in vivo measurements of tumor burden and uptake of radiolabeled annexin V in the syngeneic orthotopic murine BCL 1 lymphoma model using in vivo bioluminescence imaging (BLI) and small animal single-photon emission computed tomography (SPECT). BCL 1 cells labeled for fluorescence and bioluminescence assays (BCL 1 − gfp/luc ) were injected into mice at a dose that leads to progressive disease within two to three weeks. …”
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  5. 1365
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  7. 1367

    Reflection of two-dimensional surface polaritons by metallic nano-plates on atomically thin crystals by Lee Seojoo, Kang Ji-Hun

    Published 2023-01-01
    “…Through our rigorous model, we reveal that, for strongly confined 2DSPs having much larger momentum than free space photons, the interaction results in almost total internal reflection of 2DSPs as the radiative coupling of the 2DSPs to free space is negligible. …”
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  8. 1368

    Position for Site-Specific Attachment of a DOTA Chelator to Synthetic Affibody Molecules Has a Different Influence on the Targeting Properties of Ga-Compared to In-Labeled Conjugat... by Hadis Honarvar, Joanna Strand, Anna Perols, Anna Orlova, Ram Kumar Selvaraju, Amelie Eriksson Karlström, Vladimir Tolmachev

    Published 2014-12-01
    “…Radiolabeling of Affibody molecules with the positron-emitting nuclide 68 Ga would permit the use of positron emission tomography (PET), providing better resolution, sensitivity, and quantification accuracy than single-photon emission computed tomography (SPECT). The synthetic anti-HER2 Z HER2:S1 Affibody molecule was conjugated with DOTA at the N-terminus, in the middle of helix 3, or at the C-terminus. …”
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  9. 1369
  10. 1370

    Revolutionizing oral health care: The promise of terahertz radiation for oral oncological lesions by Alice AlSabbag, Marwan Al-Raeei

    Published 2024-12-01
    “…By leveraging the unique properties of THz photons and developing advanced amplification techniques, THz waves can target specific lesions with precision, minimizing damage to surrounding healthy tissues. …”
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  11. 1371
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  13. 1373
  14. 1374

    Quantitative Assessment of Photoneutron-induced Secondary Radiation Dose in Prostate Treatment Using an 18 MV Medical Linear Accelerator: A Monte Carlo Study by Mustapha Assalmi, Abdullah Alshreef, EL Yamani Diaf, Assia Arectout, Nicholas Ade, El Hassan El Berhdadi

    Published 2024-12-01
    “…Methods: Monte Carlo simulations were performed using G4Linac_MT to model the 18 MV photon beam of an Elekta LINAC. The simulation results were validated against experimental measurements. …”
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  15. 1375

    Multimodality Registration without a Dedicated Multimodality Scanner by Bradley J. Beattie, Gregor J. Förster, Ricardo Govantes, Carl H. Le, Valerie A. Longo, Pat B. Zanzonico, Luc Bidaut, Ronald G. Blasberg, Jason A. Koutcher

    Published 2007-03-01
    “…Using a thin plastic wrap to immobilize and fix a mouse or other small animal atop a removable bed, we are able to calculate registrations between all combinations of four different small animal imaging scanners (positron emission tomography, single-photon emission computed tomography, magnetic resonance, and computed tomography [CT]) at our disposal, effectively equivalent to a quadruple-modality scanner. …”
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  16. 1376

    Determining the Nature of IC 10 X-2: A Comprehensive Study of the Optical/IR Emission from an Extragalactic BeHMXB by Jwaher Alnaqbi, Joseph D. Gelfand, Payaswini Saikia, Craig Heinke, M. C. Baglio, David M. Russell, Guobao Zhang, Antonios Manousakis, Ivan Yu. Katkov, Fraser Lewis

    Published 2025-01-01
    “…These results substantially increase our understanding of the evolution of this source, which is a significant source of ionizing photons in its host galaxy IC 10, a low-mass, metal-poor starburst galaxy similar in many respects to those thought to be common in the early Universe.…”
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  17. 1377

    Stepwise Improvement of Cerebral Hemodynamics in Staged Angioplasty for Carotid Artery Stenosis by Fumiaki OKA, Takayuki OKU, Akiko KAWANO, Koki OKAZAKI, Takuma NISHIMOTO, Mototsugu SHIMOKAWA, Hideyuki ISHIHARA

    Published 2025-01-01
    “…In the present study, in addition to the clinical outcome of SAP, we measured both resting CBF and cerebrovascular reactivity (CVR) throughout all stages of SAP, including the chronic phase, using quantitative N-isopropyl-p-[I-123] iodoamphetamine (123I-IMP) single-photon emission computed tomography (SPECT) and evaluated the effects of SAP on cerebral haemodynamics. …”
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  18. 1378

    Nebular and Nonthermal Radio Emissions for Young Stellar Populations with PARSEC v1.2s by Ikechukwu A. Obi, Pius N. Okeke, Bonaventure I. Okere

    Published 2025-01-01
    “…In this paper, we compute, by means of the recently and thoroughly updated PARSE v1.2 s database of stellar nonrotating evolutionary tracks, the integrated stellar spectra, the ionizing photon budget, and the supernovae rates of young simple stellar populations (SSPs), for five metallicities between 0.0001 and 0.02 and four choices of stellar initial mass function (IMF) upper mass limits between 40 M _⊙ and 350 M _⊙ . …”
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  19. 1379

    The Timing and Spectral Properties of the 2022 Outburst of SGR J1935+2154 Observed with NICER by Fu Yu-Cong, Lin Lin, Ge Ming-Yu, Enoto Teruaki, Hu Chin-Ping, Younes George, Göǧüş Ersin, Malacaria Christian

    Published 2025-01-01
    “…The decay of the outburst is dominated by the drop in the nonthermal component, which also leads to an increase in thermal proportion. The photon index of the PL is inversely correlated with both the unabsorbed flux and the burst rate. …”
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  20. 1380

    Chasing the Beginning of Reionization in the JWST Era by Christopher Cain, Garett Lopez, Anson D’Aloisio, Julian B. Muñoz, Rolf A. Jansen, Rogier A. Windhorst, Nakul Gangolli

    Published 2025-01-01
    “…Recent JWST observations at z  > 6 may imply galactic ionizing photon production above prior expectations. Under observationally motivated assumptions about escape fractions, these suggest a z  ~ 8–9 end to reionization, in tension with the z  < 6 end required by the Ly α forest. …”
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