Results 101 to 110 of about 9,821 (211)

Development of an adjustable dynamic phantom for testing deviceless motion correction algorithm in PET

Medical Physics, Volume 53, Issue 8, August 2026.
Abstract Background Respiratory motion during PET Imaging leads to blurring, volumetric overestimation, and reduced quantitative accuracy. Deviceless motion correction algorithms (MCA) such as OncoFreeze (OF) by Siemens Healthineers (Forchheim, Germany) extract respiratory waveforms from list‐mode data but require validation that cannot be obtained in ...
Christian Kühnel, Tabea Nikola Schmidt, Leonie Schreiber, Holger Ginter, Michael Händel, Martin Freesmeyer, Falk Gühne   +6 more
wiley   +1 more source

Characterization of a typical urban soil in terms of natural radionuclide content. The case study of a university campus

Heliyon
A first comprehensive survey was carried out in a university campus in Italy in order to investigate in terms of natural elements an area where medium-high values of natural radiation are expected because of its peculiar geological features.
Serpil Aközcan Pehlivanoğlu, Simona Mancini, Selin Özden, Michele Guida, Mariarosaria Falanga   +4 more
doaj   +1 more source

Metal‐Based Materials for Redox Modulation in Biomedicine

Rare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Metal materials have become increasingly important in modulating biological redox networks for therapeutic and diagnostic purposes, owing to their distinctive electronic properties and adaptable reactivity. This review synthesizes recent developments across various metal‐based materials, including elemental metals, metal oxides, coordination ...
Yan Fan, Jing Zhang, Ning Sun, Mengjie Chen, Li Sun, Jie Lin, Kang Chen, Haishan Zhang   +7 more
wiley   +1 more source

Specific Activity of Radionuclides in Cryoconite Sediments of Glaciers of the Central Caucasus (Tsey, Skazka, Bezengi), Russia

Earth
Nowadays, much attention has been paid to the study of the specific activity of radionuclides on the surface of glaciers. This work is devoted to the study of specific activity of natural (K-40, U-235, U-238, Th-232) and anthropogenic (Cs-137 ...
Rustam Tembotov, Albert Gangapshev, Ali Gezhaev, Evgeny Abakumov   +3 more
doaj   +1 more source

Analysis of natural radionuclides of phosphogypsum

, 2009
AECI (project Nº A/5537/06) and to the Spanish National R&D&I Plan (Project CTQ2008-02021/PPQ)
Tayibi, Hanan, Gascó, Catalina, Gemma Navarro, N., Choura, Mohamed, Alguacil, Francisco José, López Gómez, Félix Antonio   +5 more
openaire   +1 more source

Examining the Role of Artificial Intelligence in Assessment: A Comparative Study of ChatGPT and Educator‐Generated Multiple‐Choice Questions in a Dental Exam

European Journal of Dental Education, Volume 30, Issue 3, Page 881-895, August 2026.
ABSTRACT Aim To compare the item difficulty and discriminative index of multiple‐choice questions (MCQs) generated by ChatGPT with those created by dental educators, based on the performance of dental students in a real exam setting. Materials and Methods A total of 40 MCQs—20 generated by ChatGPT 4.0 and 20 by dental educators—were developed based on ...
Nezaket Ezgi Özer, Yusuf Balcı, Gaye Bölükbaşı, Betul İlhan, Pelin Güneri   +4 more
wiley   +1 more source

Long‐Term Biodiversity–Stability Relationship in Temperate Mountain Forests

Journal of Biogeography, Volume 53, Issue 8, August 2026.
ABSTRACT Aim Theories on ecological stability lack the long‐term observational data necessary to comprehend the dynamics of durable and complex ecosystems like forests; consequently, the influence of biodiversity on ecosystem stability remains predominantly unexplained.
Petr Kuneš, Amanda Mateo‐Beneito, Gabriela Florescu, Vachel Kraklow, Richard Chiverell, Jolana Tátosová, Helena Svitavská‐Svobodová, Vojtěch Abraham, Oliver Heiri, Niina Kuosmanen   +9 more
wiley   +1 more source

ON STANDARDIZATION OF RADIATION PROTECTION INDEXES OF NATURAL MINERAL WATERS

Радиационная гигиена, 2015
Issues connected with the standardization of radiation protection indexes of natural mineral waters are considered in the article. It is shown that classification of natural mineral waters according to their intended use which is accepted in GOST R 54316-
I. P. Stamat, V. V. Stupina
doaj  

Contrast Agents for Enhanced Bioimaging: A Comprehensive Review

ChemBioChem, Volume 27, Issue 13, 14 July 2026.
Contrast agents, especially those that are nanoparticle‐based, are revolutionizing bioimaging by enabling highly sensitive, specific, and early‐stage diagnosis of diseases like cancer, using clinical imaging modalities such as CT, MRI, PET, and SPECT.
Paulo Sérgio Taube, Donald Fernandes, Arthur Abinader Vasconcelos, Hugo de Campos Braga, Alan Kelbis Oliveira Lima, José Arnaldo Santana Costa, Karla Furtado Andriani, Ester da Cunha Meira Santos, Antonio Jorge Silva Araújo Junior, Hauster Maximiler Campos de Paula, Wallace Júnio Reis, Kashif Gul, Nida Wahab, Luis Carlos Resio, Elisa Kawana Leal dos Santos, Márcio Peres de Araujo, Matheus Allen P. da Silva, Juliana Paula da Silva   +17 more
wiley   +1 more source

PECULIARITIES OF RADIOACTIVE CONTAMINATION OF THE FOREST ECOSYSTEM AFTER THE CHERNOBYL ACCIDENT

Радиационная гигиена, 2017
Chernobyl accident has influenced greatly all spheres of life of the affected territories, changing the life-style of the local population. [1, 2]. Investigation of the radionuclides behavior in natural conditions becomes more and more important which is
K. V. Varfolomeeva
doaj