Results 101 to 110 of about 57,199 (210)

Without Scratching the Surface: Depth Profiling Compositional Muon Analysis of Ancient Faience From Egypt and Sudan

Archaeometry, EarlyView.
ABSTRACT The specific depth‐profiling capabilities of the muonic x‐ray emission spectroscopy (μ‐XES) technique have proved to be effective for examination of the elemental distribution within ancient coins. This ‘layered’ analysis can also be applied to the examination of ancient faience, the production of which can result in distinct layers (glaze ...
Juliet V. Spedding, Sayani Biswas, Adrian D. Hillier   +2 more
wiley   +1 more source

Carbon-11 Production: Communication, Operations, Maintenance, Troubleshooting, and Analysis for Maintaining High-Grade Bombardment and Provisions of [¹¹C]Carbon Dioxide and Its Conversion to [¹¹C]Methyl Iodide

Molecules
Incorporation of carbon-11 radiotracers for positron emission tomography (PET) imaging requires close coordination between cyclotron operation, radiochemistry production, quality control, and clinical administration.
Simon K. Joseph, Andrew Tavare, Kiara Thomas, Dae-In Kim, Kaleigh Timmins, Melchor V. Cantorias, Briana Roman, Jakub Mroz, Jairo Baquero, Julian Calderin, Lucas Fernandez, Sandy Phung, Andrew Chung, Patrick Carberry   +13 more
doaj   +1 more source

Dry Distillation of Radioiodine from TeO2 Targets

Applied Sciences, 2013
As medical cyclotrons are becoming more abundant, 123I and 124I are getting more attention as alternatives to 131I for diagnostics of thyroid disease. Both 123I and 124I provide better diagnostics, deliver less dose to patients and both reduce the risk ...
Jacek Koziorowski, Jesper Fonslet
doaj   +1 more source

High mass accuracy analytical applications of Fourier transform ion cyclotron resonance mass spectrometry [PDF]

The performance capabilities of Fourier transform ion cyclotron resonance (FTICR) mass spectrometry are higher than any other type of mass spectrometer, making this technique suitable for a range of analytical applications.
Wills, Rebecca Helen
core  

Catalysis and allostery in bacterial ATP phosphoribosyltransferases

The FEBS Journal, EarlyView.
ATP phosphoribosyltransferase (ATPPRT) catalyses the first reaction of L‐histidine biosynthesis. L‐Histidine allosterically inhibits ATPPRT to regulate this energy‐intensive pathway in histidine‐synthesising organisms, such as bacteria, archaea and plants.
Lillian G. Bates, Rafael G. da Silva
wiley   +1 more source

Study on Separation and Purification Process of Cyclotron-produced Nuclide 68Ge

Yuanzineng kexue jishu
Germanium-68 (68Ge) is a critical precursor for the 68Ge/68Ga generator, which produces the positron-emitting radionuclide gallium-68 (68Ga). The large-scale production of 68Ge is of great significance for the clinical application of 68Ga-labeled ...
DUAN Fei1, 2, 3, LI Guang1, 2, 3, WEN Kai1, 2, 3, , MA Chengwei1, 2, 3, WANG Xiaoming1, 2, 3, ZHAO Ziyu1, 2, 3, CHU Haomiao1, 2, 3, ZHOU Jiajun1, 2, 3, LI Chao1, 2, 3, WANG Chengzhi1, 2, 3, WANG Chunlin1, 2, 3, SHEN Yubo1, 2, 3
doaj   +1 more source

Eccentric Occlusal Loads Remodel the Dentoalveolar and Temporomandibular Biomechanical Unit in Rats

Journal of Oral Rehabilitation, EarlyView.
Eccentric occlusal loads remodel the dentoalveolar and temporomandibular joints in the masticatory biomechanical unit in rats. (A) Bite block as an occlusal rise (OR) on the rat maxillary first molar (green region) is shown. (B) 18F‐NaF Positron emission tomography localised regions of higher metabolic activity (higher uptake in the left condyle ...
Haochen Ci, Umama Ali, Zhiyuan Yang, Ayush Bakhandi, Nhu Huynh, Christine Nguyen, Brandon Lee, Youngho Seo, Robert Flavell, Alireza Hatamifar, Rishi J. Gupta, Rebeka Silva, Yongmei Wang, Bo Wang, Sunita P. Ho   +14 more
wiley   +1 more source

Simulations All the Way Up! An Atheist's Response to the Fine‐Tuning Argument

Analytic Philosophy, EarlyView.
ABSTRACT So the Fine‐tuning Argument goes, because it is so unlikely for the physical constants of the laws of nature to have taken the values that they in fact take, we should significantly raise our credence that God exists. Simulation Arguments argue that our world might be (or, in stronger versions, that it probably is) a mere computer simulation ...
Nikk Effingham
wiley   +1 more source

Nonlinear enhancement of second-harmonic cyclotron damping

, 2010
[[abstract]]It is shown that the cyclotron damping rate of the second harmonic is enhanced relative to the linear rate by a nonlinear resonance resulting from the finite wavelength of the pump wave.
Hsu, J.Y.;Chiu, S.C.
core   +1 more source

Copper‐Mediated Radiofluorination of the Excitatory Amino Acid Transporter 2 (EAAT2)–Targeted PET Tracer [18F]RP‐115: Alternate Synthetic Method

Journal of Labelled Compounds and Radiopharmaceuticals, Volume 69, Issue 13-14, November-December 2026.
An efficient two‐step radiosynthesis of [18F]RP‐115 was developed using copper‐mediated radiofluorination (CMRF) followed by deprotection. In a total 70‐min synthesis time, this approach provided [18F]RP‐115 in high radiochemical yield (52.8% ± 2.1%, decay corrected from stating [18F]fluoride ion) with high molar activity (355 ± 61 GBq/μmol) and ...
Sang Hee Lee, Joseph Blecha, Jung Min Kim, Ryan Michael Nillo, Robert R. Flavell, Chih‐Kai Chao, John R. Forsayeth, John M. Gerdes, Henry F. VanBrocklin, David M. Wilson   +9 more
wiley   +1 more source