Results 51 to 60 of about 4,390 (171)

Origin of Physicochemical and Mechanical Stability of Low‐Temperature Prepared TiO2‐Based Photocatalytic Films: Surface Hydroxyl Density Matching

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Material science advances show how surface chemistry improves low‐temperature prepared TiO2‐SiO2 composite films. Using a colloidal‐based synthesis method instead of a powdered‐based one, researchers exploit hydroxyl groups' interfacial interactions to create nanoscale structures with superior physicochemical and mechanical stability.
Andraž Šuligoj, Mohamad El‐Roz, Goran Dražić, Frédéric Thibault‐Starzyk, Pegie Cool, Nataša Zabukovec Logar, Urška Lavrenčič Štangar, Nataša Novak Tušar   +7 more
wiley   +1 more source

Oxygen Depletion in Proton Spot Scanning: A Tool for Exploring the Conditions Needed for FLASH

Radiation, 2021
FLASH radiotherapy is a rapidly developing field which promises improved normal tissue protection compared to conventional irradiation and no compromise on tumour control.
Bethany C. Rothwell, Matthew Lowe, Norman F. Kirkby, Michael J. Merchant, Amy L. Chadwick, Ranald I. Mackay, Jolyon H. Hendry, Karen J. Kirkby   +7 more
doaj   +1 more source

Comparison of dosimetries of carbon-ion pencil beam scanning, proton pencil beam scanning and volumetric modulated arc therapy for locally recurrent rectal cancer

Journal of Radiation Research, 2022
Abstract We compared the dose distributions of carbon-ion pencil beam scanning (C-PBS), proton pencil beam scanning (P-PBS) and Volumetric Modulated Arc Therapy (VMAT) for locally recurrent rectal cancer. The C-PBS treatment planning computed tomography (CT) data sets of 10 locally recurrent rectal cancer cases were ...
Mori, Shinichiro, Bhattacharyya, Tapesh, Furuichi, Wataru, Tohyama, Naoki, Nomoto, Akihiro, Shinoto, Makoto, Takiyama, Hirotoshi, Yamada, Shigeru   +7 more
openaire   +2 more sources

Pitfalls in the beam modelling process of Monte Carlo calculations for proton pencil beam scanning [PDF]

The British Journal of Radiology, 2020
Objective: Monte Carlo (MC) simulations substantially improve the accuracy of predicted doses. This study aims to determine and quantify the uncertainties of setting up such a MC system. Methods: Doses simulated with two Geant4-based MC calculation ...
Winterhalter C, Aitkenhead A, Oxley D, Richardson J, Weber DC, MacKay RI, Lomax AJ, Safai S   +7 more
openaire   +3 more sources

Carbon Nanopatch‐Decorated Defect‐Rich Regions for Stable Zinc Metal Anodes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
To improve the stability of Zn anodes, a carbon‐nanopatch strategy based on candle‐flame pyrolysis is proposed. After rinsing, carbon nanoparticles are mainly retained in defect‐rich regions on the Zn surface, where they help alleviate local field intensification, improve interfacial uniformity, and mitigate parasitic reactions.
Xuyang Lu, Lei Zhang, Chenchen Yue, Zhao Liang, Ying Wang, Lin Wang, Qian Wang, Qiliang Wei, Qiao Liu, Weiyou Yang, Qing Shi   +10 more
wiley   +1 more source

CRANIOSPINAL IRRADIATION USING PENCIL BEAM SCANNING: THE PSI EXPERIENCE

International Journal of Particle Therapy
Introduction We present the dosimetric evaluation of craniospinal irradiation (CSI) treatments delivered with protons at Paul Scherrer Institute (PSI), with special focus on local recurrences and late toxicity outcome. Methods This study included 71 children, adolescents and young adults (c-AYA), who received or intended to receive (3 patients, pts ...
Bolsi, Alessandra, De Angelis, Claudio, Vázquez, Miriam, Siewert, Dorota, Correia, Dora, Bachmann, Nicolas, Lomax, Antony J., Pica, Alessia, Weber, Damien C.   +8 more
openaire   +3 more sources

A Reassessment of Petrochemistry of ~1.2 Ga Tonalitic Rocks of the Northern Tugela Terrane, Natal Metamorphic Belt, South Africa: Further Constraints on the Evolution of This Belt

Geological Journal, EarlyView.
Our petrochemical studies on ~1.2 Ga granitoids of the Natal Metamorphic Belt, South Africa, do not suggest any property similar to Phanerozoic‐style subduction‐related granitoids. Plot of Kotongweni Tonalite in Y versus Sr diagram (after Moyen 2011), note that most samples have Sr/Y < 50.
Palesa Leuta, Saumitra Misra, Thembiso O. Basupi   +2 more
wiley   +1 more source

Hypervision Proton Surgery: The Future Direction of Proton Therapy

iNew Medicine, EarlyView.
ABSTRACT Proton beams provide unique physical advantages characterized by a low entrance dose, negligible exit dose, and a sharp Bragg peak, which enable superior sparing of normal tissues and support safe dose escalation for improved tumor control. However, conventional photon‐based fractionation remains widely used in proton therapy, where prolonged ...
Li Li, Shuanghu Yuan
wiley   +1 more source

Silicon 3D Microdosimeters for Advanced Quality Assurance in Particle Therapy

Applied Sciences, 2021
The Centre for Medical Radiation Physics introduced the concept of Silicon On Insulator (SOI) microdosimeters with 3-Dimensional (3D) cylindrical sensitive volumes (SVs) mimicking the dimensions of cells in an array. Several designs of high-definition 3D
Linh T. Tran, David Bolst, Benjamin James, Vladimir Pan, James Vohradsky, Stefania Peracchi, Lachlan Chartier, Emily Debrot, Susana Guatelli, Marco Petasecca, Michael Lerch, Dale Prokopovich, Željko Pastuović, Marco Povoli, Angela Kok, Taku Inaniwa, Sung Hyun Lee, Naruhiro Matsufuji, Anatoly B. Rosenfeld   +18 more
doaj   +1 more source

3D Printing a Clinically Available Solution From Plaster‐Based Positives in Superficial Radiation Therapy

Journal of Medical Radiation Sciences, EarlyView.
This study compares two techniques for creating lead shielding masks to replace the current process for superficial/orthovoltage facial radiotherapy: Plaster Cast Positive Mould (PCPM), CT Scanned 3D Print (CT3DP), and Optical Scan 3D Print (OS3DP). CT3DP was found to be more accurate and preferred over OS3DP.
Rory Hartley, Linda Bell, Toby Lowe, Jeremy Booth, Sarah Bergamin, Dasantha Jayamanne, Ryan Brown   +6 more
wiley   +1 more source