Results 31 to 40 of about 56,467 (257)
Radiating stars with composite matter distributions
European Physical Journal C: Particles and Fields, 2021 In this paper we study the junction conditions for a generalised matter distribution in a radiating star. The internal matter distribution is a composite distribution consisting of barotropic matter, null dust and a null string fluid in a shear-free ...
Sunil D. Maharaj, Byron P. Brassel
doaj +1 more source
IEEE Open Journal of Antennas and PropagationA class of dielectric filtering inverted-L antenna with reflective- and quasi-reflectionless-type radiation nulls is proposed to achieve wideband or dual-band operation.
Wen Zheng +6 more
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Classical soft graviton theorem rewritten
Journal of High Energy Physics, 2022 Classical soft graviton theorem gives the gravitational wave-form at future null infinity at late retarded time u for a general classical scattering. The large u expansion has three known universal terms: the constant term, the term proportional to 1/u ...
Biswajit Sahoo, Ashoke Sen
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Seamless Integration Technology for Filtenna Toward 5G/6G Wireless Communications
IEEE Open Journal of Antennas and PropagationThe fifth generation (5G) mobile communication systems employ technologies such as massive MIMO, millimeter-wave (mmWave), and ultra-dense networks to support higher transmission data rate and lower latency, thereby enabling commercial deployment ...
Wei Hong, Zi-Jun Guo, Zhang-Cheng Hao
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Cylindrical universes with heat and null radiation flow
The Astrophysical Journal, 1992 We have discussed cylindrically symmetric models with the Kasnerian time evolution incorporating heat flow and null radiation flow with the perfect fluid. In the case of heat flow the Kasner spacetime is the matter-free limit of the model. We establish a general result that a static perfect fluid distribution will on Kasnerization (introduce t 4/3 , t ...
L. K. Patel, Naresh Dadhich
openaire +1 more source
Azimuth Angle Estimation for a Reduced Radiation Region Formed by a Metaspiral Antenna
IEEE Access, 2019 A two-arm metaspiral antenna is presented, where the feeding voltage sources are expressed using excitation amplitude r and deviation angle δ. This excitation is decomposed into the odd mode and even mode components. The odd mode component forms a
Hisamatsu Nakano +4 more
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Loss of IGF‐1R impairs DNA‐PKcs recruitment to chromatin leading to defective end‐joining
Molecular Oncology, EarlyView.IGF‐1R promotes radioresistance by facilitating DNA‐PKcs recruitment to chromatin, enabling non‐homologous end‐joining (NHEJ) repair of double‐strand breaks. Inhibition or loss of IGF‐1R disrupts this recruitment to damage sites, driving compensatory reliance on microhomology‐mediated end‐joining (MMEJ) repair.
Matthew O. Ellis +3 more
wiley +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective High‐resolution MRI enables detailed assessment of intracranial vessel wall pathology in moyamoya vasculopathy. We aimed to classify adult moyamoya vasculopathy etiologies using high‐resolution MRI and to examine subtype‐specific associations between high‐resolution MRI features and ischemic infarction.
Guangsong Han +8 more
wiley +1 more source
Effects of horizons on entanglement harvesting
Journal of High Energy Physics, 2020 We study the effects of horizons on the entanglement harvested between two Unruh-DeWitt detectors via the use of moving mirrors with and without strict horizons.
Wan Cong +3 more
doaj +1 more source
Null Steering of Circular Array Using Array Factor for GPS Anti-Jam [PDF]
Journal of the Korean Institute of Electromagnetic Engineering and Science, 2018 In this letter, the null steering of a circular array is presented using a modified array factor (AF) for a global positioning system (GPS) anti-jam.
Taek-Sun Kwon +2 more
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