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An exploratory study of shielding strategies for boron neutron capture discrimination in B Neutron Capture Enhanced Particle Therapy.
Phys Med
January 2025
Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia. Electronic address:
Article Synopsis
- The study investigates how different shielding strategies affect false positive rates in a neutron detection system for Neutron Capture Enhanced Particle Therapy (NCEPT).
- A Monte Carlo model was created to simulate the effects of neutron detection and various shielding configurations on a specific phantom setup.
- Results indicate that while shielding the detector crystal can worsen detection accuracy, adding a thin layer of GdO shield can enhance detection selectivity if boron is present in the detector's printed circuit boards.
Plasma Surface Modification of the Inner Wall of Montgomery's Tracheal Implant (T-Tube).
Polymers (Basel)
November 2024
São José dos Campos Institute of Science and Technology (ICT), São Paulo State University (UNESP), São José dos Campos 12245-000, SP, Brazil.
Tracheal stenosis (i.e., the abnormal narrowing of the trachea) can occur due to a variety of inflammatory and infectious processes as well as due to therapeutic procedures undertaken by the patient.
View Article and Find Full Text PDFSynthesis and Properties of the Helium Clathrate and Defect Perovskite [He □ ][CaNb]F.
J Phys Chem C Nanomater Interfaces
July 2024
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States.
The defect double perovskite [He □ ][CaNb]F, with helium on its A-site, can be prepared by the insertion of helium into ReO-type CaNbF at high pressure. Upon cooling from 300 to 100 K under 0.4 GPa helium, ∼60% of the A-sites become occupied.
View Article and Find Full Text PDFBiolistic Transformation of Cryptococcus neoformans.
Methods Mol Biol
May 2024
Duke University School of Medicine, Department of Medicine, Division of Infectious Diseases, Durham, NC, USA.
Biolistic transformation of Cryptococcus neoformans is used as a molecular tool to genetically alter or delete targeted genes. The DNA is introduced into the yeast on DNA-coated gold beads by a helium shock wave produced using a biolistic particle system. The procedure often involves insertion of a dominant selectable marker into the desired site by homologous recombination.
View Article and Find Full Text PDFStrong Swelling and Symmetrization in Siliceous Zeolites due to Hydrogen Insertion at High Pressure.
Angew Chem Int Ed Engl
July 2024
ICGM, CNRS, Université de Montpellier, ENSCM, 34293, Montpellier, France.
Hydrogen and helium saturate the 1D pore systems of the high-silica (Si/Al>30) zeolites Theta-One (TON), and Mobile-Twelve (MTW) at high pressure based on x-ray diffraction, Raman spectroscopy and Monte Carlo simulations. In TON, a strong 22 % volume increase occurs above 5 GPa with a transition from the collapsed P2 to a symmetrical, swelled Cmc2 form linked to an increase in H content from 12 H/unit cell in the pores to 35 H/unit cell in the pores and in the framework of the material. No transition and continuous collapse of TON is observed in helium indicating that the mechanism of H insertion is distinct from other fluids.
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