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Assessment of Treatment Plan Quality between Flattening Filter and Flattening Filter Free Photon Beam for Carcinoma of the Esophagus with IMRT Technique [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2023
Background: As compared to the flattened photon beam, removing the flattening filter (FF) from the head of a gantry decreases the average energy of the photon beam and increases the dose rate, leading to an impact on the quality of treatment plans ...
Dinesh Kumar Saroj   +5 more
doaj   +1 more source

Depth Recovery With Large-Area Data Loss Guided by Polarization Cues for Time-of-Flight Imaging

open access: yesIEEE Access, 2023
Time-of-Flight imaging is one of the quintessential techniques in three-dimensional reconstruction. However, depth missing is a common problem in Time-of-Flight imaging, which can be classified into structure-based depth loss and large-area one according
Yuwei Zhao   +3 more
doaj   +1 more source

Single-photon microwave photonics

open access: yesScience Bulletin, 2022
With the rapid development of microwave photonics technology, high-speed processing and ultra-weak signal detection capability have become the main bottlenecks in many applications. Thanks to the ultra-weak signal detection capability and the extremely low timing jitter properties of single-photon detectors, the combination of single-photon detection ...
Ye, Yang   +9 more
openaire   +2 more sources

Effect of helium as process gas on laser powder bed fusion of Ti-6Al-4V studied with operando diffraction and radiography

open access: yesEuropean Journal of Materials, 2022
The utilisation of helium as process gas in laser powder bed fusion limits the generation of Ti-6Al-4V hot and incandescent spatters and enhances their cooling rate.
Camille Pauzon   +7 more
doaj   +1 more source

Interpretation and Dynamics of the Lotka–Volterra Model in the Description of a Three-Level Laser

open access: yesPhotonics, 2021
In this work, the Lotka–Volterra equations where applied to laser physics to describe population inversion and the number of emitted photons. Given that predation and stimulated emissions are analogous processes, two rate equations where obtained by ...
Vicente Aboites   +4 more
doaj   +1 more source

Histone Deacetylases and Their Potential as Targets to Enhance Tumour Radiosensitisation

open access: yesRadiation, 2022
In mammalian cells, genomic DNA is packaged with histone proteins and condensed into chromatin. To gain access to the DNA, chromatin remodelling is required that is enhanced through histone post-translational modifications, which subsequently stimulate ...
Jennifer Antrobus, Jason L. Parsons
doaj   +1 more source

Gamma-Ray and Fast Neutron Shielding Parameters of Two New Titanium-Based Bulk Metallic Glasses [PDF]

open access: yesIranian Journal of Medical Physics, 2021
Introduction: Low-density bulk metallic glass (BMG) with good structural characteristics has the potential of being used for structural radiation shielding purposes.
Oyeleke Olarinoye, Celestine Oche
doaj   +1 more source

Physical and Methodological Perspectives on the Optical Properties of Biological Samples: A Review

open access: yesPhotonics, 2021
The optical properties of biological systems can be measured by imaging and microscopy methodologies. The use of X-rays, γ-radiation and electron microscopy provides information about the contents and functions of the systems. The need to develop imaging
George I. Lambrou   +4 more
doaj   +1 more source

Nanoscale Waveguide Beam Splitter in Quantum Technologies

open access: yesNanomaterials, 2022
Usually in quantum optics, the theory of large- and small-scale waveguide beam splitters is the same. In this paper, it is shown that the theory of the nanoscale waveguide beamsplitter has a significant difference from a similar device, but of a larger ...
Dmitry Makarov   +6 more
doaj   +1 more source

VIRTUAL PHOTON–PHOTON SCATTERING [PDF]

open access: yesInternational Journal of Modern Physics: Conference Series, 2014
Based on analyticity, unitarity, and Lorentz invariance the contribution from hadronic vacuum polarization to the anomalous magnetic moment of the muon is directly related to the cross section of e+e− → hadrons . We review the main difficulties that impede such an approach for light-by-light scattering and identify the required ingredients from ...
Hoferichter, Martin   +3 more
openaire   +3 more sources

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