Mostrando 7,761 - 7,780 Resultados de 66,571 Para Buscar '"No wave"', tiempo de consulta: 0.38s Limitar resultados
  1. 7761
    “…In this paper, a novel method is proposed for determining an empirical model of radio wave attenuation for vegetation in the 2.4 GHz band, which includes the vegetation height as a parameter in addition to the distance between transceivers of WNS nodes. …”
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  2. 7762
  3. 7763
    “…This single-center retrospective study aims to analyze temporal relationships of the first wave of the COVID-19 pandemic in Germany with the number of patients who sought and received elective neurosurgical treatment at a German university hospital. …”
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  4. 7764
    “…Unfortunately, the reported efficacy has not been consistent, and especially in the first three months after wound closure, fragility of the scarred skin limits the treatment options. Extracorporeal shock wave therapy (ESWT) is a new non-invasive type of mechanotherapy to treat wounds and scars. …”
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  5. 7765
    “…LSM using point shear wave elastography (pSWE) was performed in five stages: baseline, after physical activity, after registration of alcohol consumption, and during breath hold compared to free breathing. …”
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  6. 7766
    “…The objective of this study is to present characteristics and outcomes of patients admitted to medical departments of the Hospital of Piacenza during the first wave of the epidemic. METHODS: A total of 218 patients with confirmed or suspect COVID-19 and severe pneumonia were included from February 21st to May 15th, 2020. …”
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  7. 7767
  8. 7768
    “…Gravitational-wave data (discovered first in 2015 by the Advanced LIGO interferometers and awarded by the Nobel Prize in 2017) are characterized by non-Gaussian and non-stationary noise. …”
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  9. 7769
  10. 7770
    “…The intra-day, day-to-day, and inter-operator reliabilities were good when measuring the shear wave velocities in phantom gels. The intra-day and day-to-day reliabilities were good when measuring the shear wave velocities in skeletal muscle. …”
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  11. 7771
    “…For metals, excitation of longitudinal waves is inefficient without surface ablation. However, shear waves can be efficiently generated in the thermo-elastic regime and used to image defects in metallic structures. …”
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  12. 7772
  13. 7773
    “…The aim of the current study was to assess the usefulness of shear wave elastography (SWE) in this field. The US, SE, and SWE were performed in 31 children with 53 ectopic thymuses (ETs) and quantitative values of SWE parameters were calculated, so as to generate potential normative values of ET elasticity and of the shear wave ratio (SWR). …”
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  14. 7774
    por Lin, Chuandong, Su, Xianli, Zhang, Yudong
    Publicado 2020
    “…A shock wave that is characterized by sharp physical gradients always draws the medium out of equilibrium. …”
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  15. 7775
    por Dai, Legen, Xie, Yongjun, Wang, Huai
    Publicado 2020
    “…A high end-fire gain, low-profile surface wave antenna with capacitive feed structure is presented in this paper. …”
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  16. 7776
    “…Millimetre-wave (mmWave) technology continues to draw great interest due to its broad applications in wireless communications, radar, and spectroscopy. …”
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  17. 7777
  18. 7778
    “…Besides adding chemical agents, ultrasonic wave is an effective and environmental-friendly strategy to assist in water flooding for enhanced oil recovery (EOR) in unconventional reservoirs. …”
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  19. 7779
  20. 7780
    “…While the low prevalence, in comparison to mainland Spain, has prevented the saturation of the health system, this low prevalence translates into low immunization rates, therefore facilitating the propagation of new outbreaks that could lead to secondary waves of COVID-19 in the region. These findings warn about scenarios regarding after-lockdown-policies and the risk of second outbreaks, emphasize the need for widespread testing, and could potentially be extrapolated to other insular and continental regions.…”
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