Results 321 to 330 of about 3,257,828 (382)

Prospective Assessment of Fluorine-18-Fluorodeoxyglucose-Positron Emission Tomography/Computed Tomography (FDG-PET/CT) for Early Identification of Checkpoint-Inhibitor-Induced Pseudoprogression. [PDF]

Cancers (Basel)
Homburg S, Christensen CB, Pedersen M, Sørensen SG, Donia M, Svane IM, Hendel HW, Ellebaek E.   +7 more
europepmc   +1 more source

Tunable Preparation of α‐Aminoacyl Fluorides and α‐Fluoroamides via Base‐Induced Cascade Multiple‐Cleavage Processes from Bromodifluorohydrin Reagents and Amines

Advanced Synthesis &Catalysis, EarlyView.
A mild and versatile strategy enabling the divergent synthesis of α‐fluoroamides and α‐aminoacyl fluorides from 2‐bromo‐2,2‐difluoro alcohols and amines is developed. The reaction shows broad scope and operational simplicity. Mechanistic and density functional theory studies support the formation of a putative gem‐difluoroepoxide intermediate ...
Giulia De Santis, Andrea Maranzana, Federica Lauria, Mauro Spennacchio, Michael Andresini, Rosa Purgatorio, Marco Colella, Renzo Luisi, Leonardo Degennaro   +8 more
wiley   +1 more source

p‐Cu(OH)2/n‐SrTiO3 Heterojunction for Efficient Photocatalytic Hydrogen Production

Advanced Sustainable Systems, EarlyView.
Improving the efficiency of photocatalysts in the hydrogen evolution reaction relies on developing cost‐effective co‐catalysts. This study focuses on p‐Cu(OH)2/n‐SrTiO3 heterojunctions for efficient hydrogen production. 1 wt.% Cu‐based co‐catalyst significantly enhances performance, achieving ≈3.5 times higher hydrogen production compared to pristine ...
Euaggelia Skliri, Anna P. Souri, Ioannis Vamvasakis, Evangelos Andreou, Gerasimos Armatas, Vassilios D. Binas   +5 more
wiley   +1 more source

Effect of Atomic Charges on C2H2/CO2/CH4 Separation Performances of Covalent‐Organic Framework Adsorbents

Advanced Theory and Simulations, EarlyView.
Three charge assignment approaches (one quantum chemistry method‐based, the other two machine‐learning (ML) model‐based) are employed to investigate acetylene separation performances of experimental covalent‐organic frameworks. Partial Atomic Charge Predicter for Porous Materials based on Graph Convolutional Neural Network (PACMAN) ML model‐based ...
Hakan Demir, Ilknur Erucar
wiley   +1 more source

Effect of Co and Mn Doping on the Electronic and Magnetic Properties of XC₂ (X = Hf, Zr) MXene Monolayers: A First‐Principles Study

Advanced Theory and Simulations, EarlyView.
The electronic and magnetic properties of Co and Mn doped Hf₂C and Zr₂C MXene monolayers are investigated using first principles DFT+U calculations. Doping significantly modifies both the electronic structure and magnetic behavior, with bandgap opening that may be suitable for infrared applications.
Emre Bölen, Meryem Derya Alyörük
wiley   +1 more source

Design of Thermodynamically Stable Lead‐Free Cs2InCuCl6 Double Perovskite Solar Cells

Advanced Theory and Simulations, EarlyView.
Lead‐free Cs₂InCuCl₆ double perovskite (CICC) is explored as a solar absorber via SCAPS simulations. Device optimization of absorber thickness, defect densities, and interface kinetics with HTL/ETL materials reveals promising power conversion efficiency.
Luong Thien Bao Pham, Naveen Kumar Elumalai, Pranta Barua, Kiran Sreedhar Ram, Hooman Mehdizadeh‐Rad, Kannoorpatti Krishnan   +5 more
wiley   +1 more source

Template‐Free Fabrication of Single Atom Fe‐Based Cathodes Unlock High‐Performing Anion‐Exchange Membrane Fuel Cells

Advanced Science, EarlyView.
A high‐performance single‐atom critical‐raw‐material (CRM)‐free Fe‐based catalyst is designed using a template‐free manufacturing approach. This single‐atom catalyst (SAC) is incorporated into operando anion‐exchange membrane fuel cells using O2 and CO2‐free air displaying excellent performance.
John C. Douglin, Hideo Notsu, Shinsuke Nagata, Sapir Willdorf‐Cohen, Jinliu Zhong, Junya Ohyama, Jiawei Hu, Syeda M. Zahan, Andres O. Godoy, Changlai Wang, Oluwafemi Sanumi, Masayuki Tsushida, Karam Yassin, Jasna Jankovic, Charles E. Diesendruck, Yuta Nabae, Dario R. Dekel   +16 more
wiley   +1 more source

THE HALF-LIFE OF FLUORINE-18

, 1962
Mahony, John D., S, Samuel, Markowitz
openaire   +1 more source

The Radiopharmaceutical Chemistry of Fluorine-18: Nucleophilic Fluorinations [PDF]

Radiopharmaceutical Chemistry, 2019
The positron-emitting radionuclide fluorine-18 plays a prominent role in radiopharmaceuticals for positron emission tomography (PET) due to its favourable nuclear decay properties. Depending on the production method, 18F can be obtained in two different chemical forms: electrophilic [18F]fluorine gas and nucleophilic [18F]fluoride.
Johannes Ermert, Bernd Neumaier
openaire   +2 more sources

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Fluorine-18 Radiolabelling and Photophysical Characteristics of Multimodal PET-Fluorescence Molecular Probes.

Chemistry, 2020
Positron emission tomography (PET)-fluorescence imaging is an emerging field of multimodality imaging seeking to attain synergy between the two techniques.
M. Klenner, G. Pascali, Massimiliano Massi, Benjamin H. Fraser   +3 more
semanticscholar   +1 more source