Showing 1,841 - 1,860 results of 2,055 for search '"scintillator"', query time: 0.10s Refine Results
  1. 1841

    Adaptive-combining-based hybrid FSO/RF satellite communication with and without HAPS by Shah, Suyash, Siddharth, Mokkapati, Vishwakarma, Narendra, Swaminathan, R., Madhukumar, A. S.

    Published 2022
    “…However, FSO links are sensitive to beam scintillation and pointing errors. In this paper, we consider a hybrid FSO/RF communication between ground station (GS) and satellite, where the RF link will act as a backup link to improve the reliability of FSO communication. …”
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    Journal Article
  2. 1842

    Entry of the antipsychotic drug, olanzapine, into the developing rat brain in mono- and combination therapies [version 1; peer review: 2 approved] by Mark Habgood, Katarzyna Dziegielewska, Yifan Huang, Shuai Nie, Fiona Qiu, Norman Saunders

    Published 2022-12-01
    “…Olanzapine in plasma, cerebrospinal fluid (CSF) and brain was measured by liquid scintillation counting after a single dose (acute) or following 5 days of treatment (prolonged). …”
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    Article
  3. 1843

    NEMA NU 1-2018 performance characterization and Monte Carlo model validation of the Cubresa Spark SiPM-based preclinical SPECT scanner by Matthew E. Strugari, Drew R. DeBay, Steven D. Beyea, Kimberly D. Brewer

    Published 2023-06-01
    “…Results The limiting intrinsic resolution was measured as 0.85 mm owing to a high-resolution SiPM array combined with a 3 mm-thick scintillation crystal. The average limiting tomographic resolution was 1.37 mm and 1.19 mm for the single- and multi-pinhole collimators, respectively, which have magnification factors near unity at the center of rotation. …”
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    Article
  4. 1844

    Monte Carlo simulation of the system performance of a long axial field-of-view PET based on monolithic LYSO detectors by Maya Abi-Akl, Meysam Dadgar, Yassine Toufique, Othmane Bouhali, Stefaan Vandenberghe

    Published 2023-06-01
    “…While several longer axial field-of-view (aFOV) PET systems based on pixelated detectors have been installed, continuous monolithic scintillation detectors recently gained increased attention due to their depth of interaction capability and superior intrinsic resolution. …”
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    Article
  5. 1845

    Functional Characterization of Lysophospholipids by Proteomic and Lipidomic Analysis of Fibroblast-like Synoviocytes by Thomas Timm, Christiane Hild, Gerhard Liebisch, Markus Rickert, Guenter Lochnit, Juergen Steinmeyer

    Published 2023-06-01
    “…PL synthesis was determined via ESI-MS/MS, and the release of radiolabeled PLs was determined by means of liquid scintillation counting. In total, 3960 proteins were quantified using multiplexed MS, of which 119, 8, and 3 were significantly and reproducibly regulated by IL-1β, LPC 16:0, and LPC 18:0, respectively. …”
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    Article
  6. 1846

    Clinical characteristics and management of headache in patients with myeloproliferative neoplasms by Takashi Shimoyama, Hiroki Yamaguchi, Kazumi Kimura, Fumiaki Suzuki, Toshiyuki Hayashi, Satoshi Wakita

    Published 2022-12-01
    “…Multiple logistic regression analysis showed that younger age, but not platelet counts or the JAK2 V617F mutation, was independently associated with headaches (Odds Ratios 2.004, 95% confidence intervals 1.293–3.108, P = 0.002). Scintillating scotomas were present in 22 (59.5%) of 37 patients with headaches, while four patients developed sudden headaches that lasted for only 0–10 min. …”
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    Article
  7. 1847

    Experimental validation of a CeBr3 gamma-ray logging probe MCNP model by Marchais Thomas, Pérot Bertrand, Allinei Pierre-Guy, Toubon Hervé, Bensedik Youcef, Mieszkalski Romain, Hocquet Sebastien, Savov Dragomir, Schubert Matthew, Legros Bruno, Van Eyll Patrick, Pernette Michaël

    Published 2023-01-01
    “…The total gamma count rate recorded with a NaI(Tl) scintillation detector (NGRS probe) is converted into equivalent uranium grade using a calibration coefficient in s-1.ppmU-1 units, estimated thanks to different calibration blocks ranging from 0 to 10,000 ppm of uranium, at Orano CIME calibration facility in Bessines, France. …”
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    Article
  8. 1848

    GPS TEC Fluctuations in the Low and High Latitudes During the 2015 St. Patrick`s Day Storm by Jong-Kyun Chung, Junseok Hong, Sung-Moon Yoo, Jeong-Han Kim, Geonhwa Jee, Valery V. Hegai

    Published 2017-12-01
    “…As a part of collaborative efforts to understand ionospheric irregularities, the Korea ionospheric scintillation sites (KISS) network has been built based on global positioning system (GPS) receivers with sampling rates higher than 1 Hz. …”
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    Article
  9. 1849

    Assessing environmental and radiological impacts and lithological mapping of beryl-bearing rocks in Egypt using high-resolution sentinel-2 remote sensing images by Farrage M. Khaleal, Mohammed Z. El-Bialy, Gehad M. Saleh, El Saeed R. Lasheen, Mohamed S. Kamar, Mohamed M. Omar, Mohamed N. El-dawy, Ahmed Abdelaal

    Published 2023-07-01
    “…This study also investigated the radiological risk of natural radionuclides distributed in beryl-bearing bedrocks in the study area using gamma spectrometry; Sodium Iodide [NaI(Tl)] scintillation detector. Among the estimated mean 238U, 232Th, and 226Ra activity concentrations of the studied beryl-bearing rocks, Homret Mukpid (79, 87.15, 60.26 Bq kg−1) and Homret Akarem (111.6, 51.17, 85.1 Bq kg−1) contain the highest values. …”
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    Article
  10. 1850

    Correlation between the Orientation of Cross-Field Axes of Small-Scale Anisotropic Irregularities in Midlatitude Ionosphere and Drift Direction in the F Region by Valery A. Panchenko, Viktor A. Telegin, Natalia Yu. Romanova

    Published 2019-10-01
    “…A tomographic approach was used to determine SSI anisotropy parameters by processing radio scintillation signals during overfly by several navigation satellites emitting on frequencies of 150 MHz and 400 MHz. …”
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    Article
  11. 1851

    High-Resolution Observation of Ionospheric E-Layer Irregularities Using Multi-Frequency Range Imaging Technology by Bo Chen, Yi Liu, Jian Feng, Yuqiang Zhang, Yufeng Zhou, Chen Zhou, Zhengyu Zhao

    Published 2023-01-01
    “…E-region field-aligned irregularities (FAIs) are a hot topic in space research, since electromagnetic signal propagation through ionospheric irregularities can undergo sporadic enhancements and fading known as ionospheric scintillation, which could severely affect communication, navigation, and radar systems. …”
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    Article
  12. 1852

    IMITATION OF STANDARD VOLUMETRIC ACTIVITY METAL SAMPLES by A. I. Zhukouski, A. O. Nichyparchuk, A. A. Khrutchinsky, S. A. Kutsen

    Published 2016-09-01
    “…Theoretical and experimental studies performed have shown the possibility to use imitators as a set of alternating point sources of gamma radiation and metal plates and their use along with standard volumetric activity metal samples for calibration of scintillation-based detectors used in radiation control in metallurgy. …”
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    Article
  13. 1853

    Study of White Neutron Source at CYCIAE-100 for Single Event Effect Irradiation Experiment by CHEN Qiming;BAO Jie;MA Xu;GUO Gang*;ZHAO Shuyong;ZHANG Zheng;HAN Jinhua;ZHANG Fuqiang;LI Wangtian

    Published 2023-12-01
    “…The energy spectrum of white neutrons is measured by the neutron time-of-flight method based on two liquid scintillation detectors. The neutron energy spectrum is obtained in the range of 3-100 MeV, and when the proton beam is 100 MeV/1 μA, the neutron flux is 3.3×104 cm-2·s-1 at the distance of 15 m from the W target, which meets the requirements of neutron single event effect experiments. …”
    Article
  14. 1854

    Green Bank Telescope Discovery of the Redback Binary Millisecond Pulsar PSR J0212+5321 by Karen I. Perez, Slavko Bogdanov, Jules P. Halpern, Vishal Gajjar

    Published 2023-01-01
    “…We suspect the pulsar experiences wide orbital eclipses, similar to other redbacks, as well as scintillation and DM delays caused by its interaction with its companion and surroundings. …”
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    Article
  15. 1855

    Features of lipid synthesis from [2-14C] acetate in liver and intestinal mucosa of piglets by O. Ya. Zakhariv, I. V. Vudmaska, A. P. Petruk

    Published 2020-07-01
    “…The radioactivity of each fraction was determined by a scintillation counter. The results show that the intensity of lipid synthesis from [2-14C] acetate in liver of 1 day-age piglets was 2.5 times higher than at 10 and 30 days. …”
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    Article
  16. 1856

    Entry of the antipsychotic drug, olanzapine, into the developing rat brain in mono- and combination therapies [version 2; peer review: 2 approved] by Mark Habgood, Katarzyna Dziegielewska, Yifan Huang, Shuai Nie, Fiona Qiu, Norman Saunders

    Published 2023-02-01
    “…Olanzapine in plasma, cerebrospinal fluid (CSF) and brain was measured by liquid scintillation counting after a single dose (acute) or following 5 days of treatment (prolonged). …”
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    Article
  17. 1857

    New Data on the Chronology and Development of Cattle Breading During the Eneolithic and Early Bronze Age in the Southern Ural Region by Nina L. Morgunova, Natalia V. Roslyakova, Marianna A. Kulkova

    Published 2019-06-01
    “…For radiocarbon dating collagen was treated from bone samples on the base of the standard procedure and radiocarbon activity was measured by Quantulus 1220 low background scintillation counter. Analysis and Results. As a result 32 radiocarbon dates were obtained on animal bones and on organics from pottery of different types from different cultural layers of Turganik settlement. …”
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    Article
  18. 1858

    PSMA and 18F-FDG PET Imaging in the Treatment of Metastatic Prostate Cancer with 223Ra: Initial Application and Experience by HU Guilan, TIAN Jian, LI Yongqiang, JI Zhigang, HUO Li, CHEN Yonghui

    Published 2023-07-01
    “…Results  Nine patients were enrolled (2 additional patients were excluded for the reason of visceral metastases confirmed by pretreatment PET imaging), among whom 8 patients had metastatic castration resistant prostate cancer and 1 had metastatic hormone-sensitive prostate cancer.In total the 9 patients received 36 doses of 223Ra, and the numbers of patients receiving 6, 5, 4, 2, and 1 doses were 3, 1, 2, 2, and 1, respectively.At the middle or end of treatment, there was 1 case of partial remission, 1 case of stable disease, 6 cases of progressive disease, and 1 case was switched to endocrine therapy after 1 shot of 223Ra treatment so that the efficacy was not evaluated.At the time of the last follow-up (March 15, 2023), among the 9 patients, 4 died (1 due to heart failure and 3 due to disease progression) and 5 survived.For patients who died or with progressive disease, there was an inconsistency between the metastases shown on baseline PET images and bone scans, with the former modality revealing more bone metastases.PET imaging especially PSMA PET was more accurate than bone scan in assessing response and could avoid bone scintillation.  Conclusions  PSMA PET and/or 18F-FDG PET could help detect visceral metastases and assist in patient screening.The inconsistency between baseline PET images and bone scan images suggests a worse outcome of 223Ra treatment.During the efficacy evaluation process, PSMA and/or 18F-FDG PET (especially PSMA PET) also outperforms bone scan.…”
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    Article
  19. 1859
  20. 1860