Results 21 to 30 of about 238,679 (287)
Shear-Free Gravitational Waves in an Anisotropic Universe [PDF]
, 2002 We study gravitational waves propagating through an anisotropic Bianchi I dust-filled universe (containing the Einstein-de-Sitter universe as a special case).
E. M. O’Shea +8 more
core +3 more sources
Methods for null control and their effects on the radiation pattern [PDF]
IEEE Transactions on Antennas and Propagation, 1986 Several methods for synthesis of array antenna patterns with prescribed nulls are reviewed. Methods based on full amplitude/phase control at each array element and methods with a restricted number of degrees of freedom are compared, with attention focused on the characteristic features of the resultant patterns.
Steyskal, H., Shore, R., Haupt, R.
openaire +2 more sources
A Broadband Filtering Patch Antenna Using T-Probe, Transverse Stubs, and U-Slots
IEEE Access, 2019 This paper presents a broadband filtering patch antenna. This antenna consists of a rectangular patch, a rectangular ground plane, and an upright substrate.
Weimin Wang +3 more
doaj +1 more source
Metabolites, 2019 The goal of this study was to interrogate biochemical profiles manifested in mouse lung tissue originating from wild type (WT) and cd47 null mice with the aim of revealing the in vivo role of CD47 in the metabolic response to ionizing radiation ...
Elizabeth R. Stirling +3 more
doaj +1 more source
New results for Petrov type D pure radiation fields [PDF]
, 2009 We present a new family of Petrov type D pure radiation spacetimes with a shear-free, non-diverging geodesic principal null congruence.Comment: 4 pages; changed the appearance of some v's and nu'
Kerstin E. Kunze +4 more
core +2 more sources
Resistance of bone marrow stroma to genotoxic preconditioning is determined by p53
Cell Death and Disease, 2021 Transplantation of bone marrow (BM) is made possible by the differential sensitivity of its stromal and hematopoietic components to preconditioning by radiation and/or chemotherapeutic drugs.
Natalia Fedtsova +9 more
doaj +1 more source
Gravitational Collapse in Constant Potential Bath [PDF]
, 2000 We analyse here the gravitational collapse of directed null radiation in a background with a constant potential such as one produced by a star system like galaxy in which the collapsing object is immersed.
A. Papapetrou +16 more
core +2 more sources
Frontiers in Oncology, 2018 In a two-part article published in 2009, we discussed the limitations of conventional radiation therapy, the challenges of studying new technologies in radiation oncology, and summarized the state-of-the science for various malignancies (1, 2).
Kaveh Zakeri +3 more
doaj +1 more source
Quantum superradiance on static black hole space-times
Physics Letters B, 2020 We study the quantum analogue of the classical process of superradiance for a massless charged scalar field on a static charged black hole space-time.
Visakan Balakumar +3 more
doaj +1 more source
Failure Correction of a Linear Array of Coupled Parallel Vertical Dipole Antennas
Journal of Telecommunications and Information Technology, 2020 In this paper, a cuckoo search algorithm based on the combined characteristics of the brood parasite behavior and Levy flights is applied to correct the radiation pattern of a linear antenna array composed of parallel dipoles with faulty elements.
Hemant Patidar +3 more
doaj +1 more source