Results 81 to 90 of about 42,514 (244)

Non‐Invasive, High‐Resolution (1H2O) Metabolic Activity Diffusion Imaging [MADI] of Rat Glioma

NMR in Biomedicine, Volume 39, Issue 3, March 2026.
We employed Metabolic Activity Diffusion Imaging [MADI] and 18FDG‐PET in rats with syngeneic RG2 glioblastoma brain tumors. MADI quantifies kio (the cellular H2O efflux rate constant), cell volume (V), and cell density (ρ), without the use of contrast agents. The kioV product quantifies the rate of water efflux per cell.
Joshua W. Schlegel, Samantha M. Holland, Felice D. Kelly, Eric M. Baker, Jared Stoller, William Packwood, Xin Li, Ramon F. Barajas Jr., Charles S. Springer Jr., Martin M. Pike   +9 more
wiley   +1 more source

Peptide and Drug‐Protected Gold Nanoclusters as Promising Biomaterials: Synthesis, Properties, and Applications

Aggregate, Volume 7, Issue 2, February 2026.
The integration of atomically precise gold nanoclusters with peptides or drugs represents a cutting‐edge class of nanomaterials in the biomedical field, owing to their unique physicochemical properties such as water solubility, excellent biocompatibility, low toxicity, and good renal clearance.
Rebeca Garcia Moura, M. Terêsa Machini, Rongchao Jin   +2 more
wiley   +1 more source

Influence of the filler content on the free nanohole volume in epoxy-based composites

eXPRESS Polymer Letters, 2013
A study on free nanohole volumes in particulate epoxy matrix composites as a function of the aluminum particles content is presented. Specifically, the influence of the filler content in the epoxy matrix on the nanohole volume is analyzed in terms of the
S. Tognana, W. Salgueiro, A. Somoza, A. J. Marzocca   +3 more
doaj   +1 more source

Molecular Cages Based Materials for CO2 Capture, Separation, and Conversion

EcoMat, Volume 8, Issue 2, February 2026.
Molecular cages (MCs), boasting soluble, regenerable traits and precisely tunable structures, exhibit substantial potential for efficient CO2 capture, separation, and conversion. This review thoroughly explores MCs' recent advancements, analyzes current unresolved challenges, and provides forward‐looking perspectives to tackle pressing carbon‐related ...
Ding Zou, Bin Ai, Yanni Zhang, Xiaoyu Cao, Hongyu Zhen   +4 more
wiley   +1 more source

Positron annihilation spectroscopy on a beam of positrons the LEPTA facility

EPJ Web of Conferences, 2017
The results and possibilities of the samples surfaces research by the Doppler method of positron annihilation spectroscopy (PAS) for a monochromatic beam of positrons at the LEPTA facility are presented in this paper.
Ahmanova E.V., Eseev M.K., Kobets A.G., Meshkov I.N., Orlov O.S., Sidorin A.A., Siemek K., Horodek P.   +7 more
doaj   +1 more source

Sintering of CuO investigated by positron lifetime spectroscopy

Journal of Materials Science, 1991
The sintering process of CuO under isochronal annealing has been investigated by positron lifetime spectroscopy. A long-lived component of 370±20 psec, observed in as-pressed samples and samples annealed at T≤900 K, has been attributed to continuous channels along three-grain junctions.
Pareja, R., Cruz, R. M. de la, Díaz Sol, Luis   +2 more
openaire   +2 more sources

Chemically Accurate Prediction of CO2 Adsorption Thermodynamics in Metal–Organic Framework CALF‐20: Complementary Ab Initio Modeling and Grand Canonical Monte Carlo Simulations

Small Structures, Volume 7, Issue 2, February 2026.
Ab initio thermodynamics and GCMC simulations reveal a cooperative two‐step CO2 pore filling mechanism in CALF‐20. The study captures adsorption energetics and loading‐dependent structural changes, reproducing experimental isotherms with chemically accurate predictions.
Kaido Sillar, Sonja Grubišić, Ivana S. Đorđević, Majdi Hochlaf   +3 more
wiley   +1 more source

Effect of high‐intensity interval exercise on metformin pharmacokinetics in healthy men, assessed through a population pharmacokinetic model

British Journal of Pharmacology, Volume 183, Issue 3, Page 438-452, February 2026.
Abstract Background and Purpose Metformin and exercise are first‐line therapies for prediabetes and type 2 diabetes. However, it is unclear whether the combination of metformin and exercise is synergistic or antagonistic. The aim of this study was to investigate the effect of exercise on metformin pharmacokinetics and help clarify the contradictory ...
Stefanos Nikolaidis, Ioannis Kosmidis, Stylianos Papadopoulos, Artemis Lioupi, Marita Gandanidou, Helen Gika, Aristides Dokoumetzidis, Georgios Theodoridis, Vassilis Mougios   +8 more
wiley   +1 more source

Free Volume of PVA/SSA Proton Exchange Membrane Studied by Positron Annihilation Lifetime Spectroscopy

, 2017
Free Volume of PVA/SSA Proton Exchange Membrane Studied by Positron Annihilation Lifetime Spectroscopy M.M. Gomaaa,b,∗, C. Hugenschmidt, M. Dickmann, M.O. Abdel-Hamed, E.E. Abdel-Hady and H.F.M.
M. M. Gomaa, C. Hugenschmidt, M. Dickmann, M. O. Abdel-Hamed, E. Abdel‐Hady, H. Mohamed   +5 more
semanticscholar   +1 more source

A Positron Lifetime Study of Cooling and Natural Aging of Solutionized Aluminum Alloys

Advanced Engineering Materials, Volume 28, Issue 2, January 21, 2026.
The process during cooling of Al–Mg and Al–Mg–Si alloys from the solutionizing temperature down to 20 °C is interrupted. These states are analyzed with positron lifetime spectroscopy to trace the processes during cooling. In different temperature ranges, two stages of vacancy loss and solute clustering are identified.
Zi Yang, Mengjie Li, John Banhart
wiley   +1 more source