Results 21 to 30 of about 1,830,826 (251)

Propagation of an Azimuthally Polarized Terahertz Laser Beams with a Phase Singularity

open access: yesEast European Journal of Physics
Analytical expressions are derived to describe the nonparaxial diffraction of modes in a dielectric waveguide resonator for a terahertz laser. The study examines the interaction between azimuthally polarized TE0m (m = 1, 2, 3) modes and a spiral phase ...
Andrey V. Degtyarev   +4 more
doaj   +1 more source

Spatial Dynamics of a Radially Polarized Terahertz Laser Beam with a Phase Singularity

open access: yesEast European Journal of Physics
Analytical expressions are obtained that describe the nonparaxial diffraction in free space of the TM01 mode with radial polarization of the field of the dielectric waveguide resonator of a terahertz laser during its interaction with a spiral phase plate
Andrey V. Degtyarev   +4 more
doaj   +1 more source

Evolution of Vector Vortex Beams Formed by a Terahertz Laser Metal Resonator

open access: yesEast European Journal of Physics
Analytical expressions for the nonparaxial mode diffraction of a terahertz laser metal waveguide resonator are obtained. The study assumes interaction between the modes and a spiral phase plate, considering different topological charges (n).
Andrey V. Degtyarev   +4 more
doaj   +1 more source

Analysis on near-field vibroacoustic characteristics of the underwater cylindrical shells with WNFS

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
The surface vibration velocities and near-field pressure of the underwater cylindrical shell, which are excited by external force, were calculated using wave propagation method.
Bingru Li   +3 more
doaj   +1 more source

Methods for description of the total field propagation in the irregular dielectric waveguides

open access: yesJournal of Telecommunications and Information Technology, 2001
Numerical and semi-analytical methods useful for analysis of the total field propagation in dielectric waveguides with sharp and smooth discontinuities are reviewed.
Ella V. Bekker, Elena A. Romanova
doaj   +1 more source

Identification and characterisation of calcitonin receptor isoforms expressed in glioblastoma derived glioma stem and U‐87 MG cells

open access: yesFEBS Open Bio, EarlyView.
Glioblastoma cells express calcitonin receptor variants (CT receptor isoforms) that may help them survive stress. Using qPCR, transcript‐specific long‐read nanopore sequencing, immunofluorescence co‐localisation and comparative sequence analysis, this study identifies a novel alternatively spliced CALCR transcript that encodes the CTb receptor isoform ...
Pragya Gupta   +7 more
wiley   +1 more source

Observation of continuum radiations from the Cluster fleet: first results from direction finding [PDF]

open access: yesAnnales Geophysicae, 2004
The Cluster fleet offers the first possibility of comparing non-thermal terrestrial continuum radiation from similarly equipped nearby observation points.
P. M. E. Décréau   +12 more
doaj   +1 more source

Genomic Loss and Epigenetic Silencing of the FOSL1 Tumor Suppressor Gene in Radiation-induced Neoplastic Transformation of Human CGL1 Cells Alters the Tumorigenic Phenotype In Vitro and In Vivo

open access: yes, 2023
The CGL1 human hybrid cell system has been utilized for many decades as an excellent cellular tool for investigating neoplastic transformation. Substantial work has been done previously implicating genetic factors related to chromosome 11 to the ...
Boreham, Douglas R.   +21 more
core   +1 more source

Lymphocyte Depletion Rate as a Biomarker of Radiation Dose to Circulating Lymphocytes During Fractionated Partial-Body Radiation Therapy [PDF]

open access: yes, 2022
PURPOSE: Radiation causes exponential depletion of circulating lymphocyte populations; in turn, radiation-induced lymphopenia is associated with worse survival for many solid tumors, possibly owing to attenuated antitumor immune responses.
Mohan, Radhe   +9 more
core   +1 more source

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

open access: yesAging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

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